Patent Application
20240015860
The present disclosure relates to a latch and a cooking apparatus including the same, and more particularly to a latch couplable to a housing and a cooking apparatus including the same.
In general, a cooking apparatus is a device for heating and/or cooking an object (e.g., a cooking object), such as food. Specifically, the cooking apparatus can perform various functions related to cooking, such as heating, defrosting, drying, and sterilizing the cooking object. Such cooking apparatus includes, for example, an oven, such as a gas oven or an electric oven, a microwave heating device (hereinafter referred to as a microwave), a gas range, an electric range, a gas grill, or an electric grill.
In general, an oven is a device that cooks food by transferring heat directly to the food through a heating source that generates heat such as a heater or by heating the inside of the cooking room. A microwave oven is a device that cooks food by intermolecular friction heat generated by disturbing the molecular arrangement of food using high frequency as a heating source.
A cooking apparatus typically includes a door. The door serves to open and close a cooking space or a cooking room from outside the cooking apparatus. Once the door is closed, it is secured by a latch. The latch includes a switch that senses the opening and closing of the door.
The door of the cooking apparatus is rotated to operate the switch that senses the opening and closing of the door. Since the operation of the switch by the door can be defective due to deviations in assembly and dimensional deviations between parts, such deviations are an important factor in product defects.
In particular, in the case of a cooking apparatus that uses a magnetron, it is important that the high frequency generated by the cooking apparatus is controlled so that no high frequency is generated when the door is opened, as the high frequency generated by the cooking apparatus is harmful to living bodies such as the human body. To solve this problem, accurately detecting the opening of the door is desired.
One aspect of the present disclosure provides a latch that is coupled to a back surface of a front panel of an outer housing to accurately detect opening of the door.
Another aspect of the present disclosure provides a cover member that prevents a coupling member, which protrudes from an outer surface of an outer housing from being visible when a latch is coupled to a back surface of a front panel of the outer housing.
Another aspect of the present disclosure provides a latch in which a side of a latch housing facing a front panel of an outer housing is concave, allowing the latch housing to accurately engage the front panel.
According to an aspect of the present disclosure, a cooking apparatus may include an outer housing cover including an upper panel and two side panels, an outer housing including a front panel, a back panel, and a bottom panel, an inner housing positioned on an inner side of the outer housing and having a cooking room formed therein, a door rotatably coupled to a front side of the outer housing for opening and closing the cooking room, and a latch coupled by a cover member to a back side of the front panel of the outer housing for securing the door and detecting opening and closing of the door.
A door further including a manipulation portion coupled to a front side of the front panel to conceal a front portion of the front panel, the latch being coupled to a back side of the front panel by the cover member in a position corresponding to the manipulation portion, such that when the cover member opens the door, it is not visible from the outside.
The latch may include a latch housing including an exterior of the latch, a detecting portion coupled to the interior of the latch housing and detecting the opening or closing of the door, the latch housing being concave in a direction away from the front panel such that both ends of the front panel facing side of the latch housing are in contact with the front panel.
The latch recess may include two planes forming a predetermined angle.
The latch housing may be arranged such that the cover member is coupled to an upper and lower side of the latch housing, respectively, and the latch housing is further from the front panel than two planes such that a space between the parts to which the cover member is coupled forms a predetermined angle of the latch recess.
A step may be formed between the two planes forming the predetermined angle in a shape corresponding to the front panel.
A front panel-facing side of the latch housing may include a latch protruding portion projecting toward the front panel, and a side formed by joining ends of the latch protruding portion may form a recessed latch recess.
The door includes a key door which, when the door is closed, protrudes in a direction toward the latch housing and is detected by the detecting member, the latch housing including a key door opening in which the key door can be received, a coupling opening in which the cover member can be received, and the latch protruding portion can be formed around the key door opening, or can be formed around the coupling opening.
Of the two planes forming the latch recess, one plane may be formed in a position corresponding to the key door opening, and the other plane may be formed in a position corresponding to the coupling opening.
The front panel includes a cooking room opening arranged in a position corresponding to the cooking room, a manipulation portion opening arranged in a position corresponding to the manipulation portion, and an opening connecting portion arranged between the cooking room opening and the manipulation portion opening, where the latch may be coupled to a back surface of the opening connecting portion.
The front panel may include, on one side of the opening connecting portion, a latch guide bent and formed from a front side of the front panel, the latch housing may include a latch protrusion projecting toward the latch guide, and the latch guide may include a latch protrusion accommodating hole arranged to receive the latch protrusion, at a location corresponding to the latch protrusion.
The door may further include a cover member coupled to a front surface of the outer housing, to enclose the door side when the door is closed.
The cover member may include a fastening groove through the latch and the outer housing into which the cover member is engaged to couple the latch to the outer housing.
The cover member may be secured to the latch and the front panel through the cover member, and the cover member may be concealed by the latch and not exposed to the outside.
The cover member includes a cover member opening, and when the door is closed, at least a portion of the door side can be received in the opening of the cover member.
According to another aspect of the present disclosure, a latch may include a latch housing forming an outer surface, a detecting portion coupled to an interior of the latch housing, and a latch recess formed on one side of the latch housing such that, when the latch is coupled to another object, both ends of a side of the latch housing to be coupled to the other object abut a side of the other object to be coupled.
The latch recess may include two planes forming a predetermined angle.
The latch housing may include a latch protruding portion projecting outwardly and a face formed by joining the ends of the latch protruding portion, the latch recess being concave.
According to another aspect of the present disclosure, a cooking apparatus includes an outer housing cover including an upper panel and two side panels, an outer housing including a front panel, a back panel and a bottom panel, an inner housing located on an inner side of the outer housing, in which a cooking room is formed, a door rotatably coupled to a front side of the outer housing for opening and closing the cooking room, a latch engaged by a cover member on a back side of the front panel of the outer housing to secure the door and detect opening and closing of the door, and a cover member engaged on a front side of the outer housing to enclose a side of the door when the door is closed, the cover member being secured to the latch and to the front panel through the latch and to the cover member, the cover member may be concealed by the cover member and not exposed to the outside.
The cover member includes a cover member opening, where at least a portion of the door side can be received in the cover member opening when the door is closed.
According to one aspect of the present disclosure, a latch of a cooking apparatus can accurately detect an open state of a door.
According to another aspect of the present disclosure, a cover member of a cooking apparatus may prevent the cover member from projecting onto an outer surface of the outer housing.
According to another aspect of the present disclosure, the latch housing recessed first side allows the latch to accurately engage the front panel.
The embodiments described herein and the configurations illustrated in the drawings are merely examples of the disclosed invention, and there are many variations that may be substituted for the embodiments and drawings described herein at the time of filing of this application.
In addition, identical or similar reference numerals or symbols in each drawing of this specification designate parts or components that perform substantially the same function.
Further, the terminology used herein is intended to describe embodiments and is not intended to limit and/or define the disclosed invention. The singular expression includes the plural unless the context clearly indicates otherwise.
Within the Figures and the text of the disclosure, a reference number indicating a singular form of an element may also be used to reference a plurality of the singular element.
In this specification, the terms “comprises,” “includes” or “has” and the like are intended to designate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described, and do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.
Further, as used herein, ordinal terms such as “first,” “second,” and the like may be used to describe various components, but the components are not limited by such terms, and such terms are used only to distinguish one component from another. For example, without departing from the scope of the present invention, a first component may be named a second component, and similarly, a second component may be named a first component.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, “a”, “an,” “the,” and “at least one” do not denote a limitation of quantity, and are intended to include both the singular and plural, unless the context clearly indicates otherwise. For example, “an element” has the same meaning as “at least one element,” unless the context clearly indicates otherwise. “At least one” is not to be construed as limiting “a” or “an.” “Or” means “and/or.” The term “and/or” includes any combination of a plurality of related recited items or any one of a plurality of related recited items.
As used in the following description, the terms “up and down,” “bottom,” and “front and rear” are defined with reference to the drawings, and the shape and position of each component are not limited by these terms.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Embodiments are described herein with reference to cross section illustrations that are schematic illustrations of idealized embodiments. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments described herein should not be construed as limited to the particular shapes of regions as illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, a region illustrated or described as flat may, typically, have rough and/or nonlinear features. Moreover, sharp angles that are illustrated may be rounded. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region and are not intended to limit the scope of the present claims.
The cooking apparatus 1 according to one embodiment of the present invention is described using a microwave oven as an example. However, without limitation, the cooking apparatus 1 according to one embodiment of the present invention may also be applied to other cooking apparatus 1, such as an oven.
Embodiments of the present invention will be described in detail below.
As shown in
Referring to
The outer housing 100 and the inner housing 200 may be arranged to open toward the front of the cooking apparatus 1. That is, both of the housings may open in a front direction (e.g., in the A direction).
A user may place a food item into the cooking room 201 or remove a food item from the cooking room 201, through an opening (e.g., a first opening) in the inner housing 200. The outer housing 100 may have an opening (e.g., a second opening) corresponding to the first opening.
The cooking room 201 may be arranged in a roughly cuboidal shape, that is, having a cuboidal volume.
The cooking apparatus 1 may include a machine room 103 formed inside the outer housing 100 and disposed below the cooking room 201. Inside the machine room 103, various electrical components that drive the cooking apparatus 1 may be disposed.
The cooking apparatus 1 may include a door 300 arranged to be openable and closable to open and close a respective opening in the outer housing 100 and the inner housing 200.
The door 300 may include a key door 302 as a door key that secures the door 300 to other components of the cooking apparatus 1.
On the front side of the door 300, an input portion or manipulation portion may be arranged to input signals (e.g., an electrical signal, a manual signal, etc.) for a user to control the cooking apparatus 1. The input portion or manipulation portion 800 may include a display portion that displays an image or a touch portion that is arranged to input an electrical signal by touching the image.
The door 300 may include a transparent member 301 that is arranged to allow a user to observe the interior of the cooking room 201 when the door 300 is closed.
The cooking apparatus 1 may include a shelf 202 mounted inside the cooking room 201 and arranged for a user to position a cooked item. The shelf 202 may be removably disposed within the cooking room 201.
The cooking apparatus 1 may include a heating source 400 that provides heat to the interior of the cooking apparatus 1, at the cooking room 201, so that the food is cooked by the heat.
The heating source 400 may be arranged to provide heat to the food items located on the shelf 202 so that the food items may be cooked. Additionally, the food items may be located on the bottom of the cooking room 201 without the shelf 202. In this case, the heating source 400 may also provide heat to the cookware located on the bottom.
The heating source 400 may include a first heating source 410 disposed on a top surface of the cooking room 201.
The heating source 400 may include a second heating source 420 disposed on the underside of the cooking room 201. The first heating source 410 may face the second heating source 420 with a portion of the cooking room 201 therebetween.
The first heating source 410 may include a plurality of heaters that generate radiant heat. The plurality of heaters may radiate heat generated by themselves and transfer heat directly to the food product.
The second heating source 420 may include a magnetron that generates high frequencies. The high frequency generated by the magnetron may be injected into the interior of the food product and arranged to cook the interior of the food product by frictional heat between the molecules generated by repeatedly converting the molecular arrangement of the water contained in the food product.
The magnetron may be disposed in the machine room 103. A second heating source 420 may oscillate a high frequency from the machine room 103 toward the underside of the cooking room 201 and the high frequency may pass through the underside and be irradiated onto the shelf 202.
The cooking apparatus 1 may include a first heating source 410 and a second heating source 420, and may be arranged to efficiently cook a food product.
As shown in
The separation space 104 may be provided with a latch 500. The latch 500 may be located at the front upper side of the separation space 104. The latch 500 may be formed in two symmetrical rows on the back of the front panel 120 of the outer housing 100. The latch 500 may engage with the door 300, at the key door 302, to secure the door 300 so that the door 300 cannot be opened.
As shown in
The cover member 600 may be located between the door 300 and the outer housing 100.
A detailed positioning relationship and function of the cover member 600 will be described later.
The outer housing 100 of the cooking apparatus 1 may include an upper panel 110b and both side panels 110a, 110c, a front panel 120, a back panel 130, and a bottom panel 140. The upper panel 110b and the two side panels 110a, 110c may be integrally formed.
The front panel 120 may be coupled to the front of the inner housing 200. The front panel 120 may serve to cover the front of the machine room 103, prevent electrical components from being exposed to the outside, and protect the inner housing 200. At this time, a cooking room opening 120a may be formed in or by portions of the front panel 120, such that cooking items may be placed inside the cooking room 201 through the cooking room opening 120a.
The housing cover 110 may be integrally formed including an upper panel 110b and two side panels 110a, 110c. The housing cover 110 may function to protect the cooking apparatus 1 from the outside.
The back panel 130 may be coupled to the back of the inner housing 200, and may function to protect electronics by preventing them from being exposed to the outside. In particular, the back of the inner housing 200 may have shock-sensitive electronics, such as a printed circuit board (PCB), which may be protected.
The latch 500 may be coupled to the outer housing 100 at the front panel 120.
Specifically, the latch 500 may be coupled to a back surface of the front panel 120. More specifically, the latch 500 may be coupled to a top side portion of the back surface of the front panel 120.
As shown in
The latch 500 not only serves to secure the door 300, but also serves to detect a position of the door 300 in the opening and closing of the door 300. Therefore, the latch 500 is coupled to a location that allows the latch to detect the opening (or closing) of the door 300 as accurately as possible.
In the case of a cooking apparatus 1 using a magnetron, care must be taken to ensure that the high frequencies generated by the magnetron do not come into contact with a living body such as the human body, since the high frequencies can cause harmful effects if they come into contact with the human body. For this reason, international standards exist to ensure that the cooking apparatus 1 with a magnetron does not leak high frequencies when the door 300 is opened.
In other words, the cooking apparatus 1 must be able to accurately detect when door 300 is opened, so that generation of high frequencies in the magnetron when door 300 is opened can be prevented. To accomplish this, the latch 500 must be accurately engaged in its intended position so that it can accurately detect the opening of the door 300.
The present invention couples the latch 500 to the back of the front panel 120 of the outer housing 100 so that the latch 500 more accurately detects the opening and closing of the door 300. Since the latch 500 is coupled to the back of the front panel 120, the distance to the door 300 is constant with the thickness of the front panel 120, the engagement position of the latch 500 can be constant, e.g., the latch 500 can be positioned in the intended location.
Thus, based on this precise location, it is possible to more accurately measure the opening of the door 300. When the door 300 is opened, the blocking of the high frequency occurs precisely, thereby providing a safer cooking apparatus 1 and producing a product that complies with international standards.
Further, by directly coupling the latch 500 to the front panel 120 of the outer housing 100, the process of re-adjusting the position of the latch 500 after coupling the latch 500 may be eliminated. For example, in an embodiment of a method of providing the cooking apparatus 1, when coupling the latch 500 to the inner housing 200, a process of re-adjusting the spacing of the front and rear of the latch 500 while the latch 500 is coupled to the inner housing 200 is performed. However, when coupling the latch 500 to the outer housing 100 as in the present invention, such a process is unnecessary, which may reduce manufacturing time and cost.
As shown in
The cover member 600 may include a latch guide 601 having a protruding shape. When the cover member 600 is coupled to the front of the front panel 120, the latch guide 601 may be inserted into a latch guide hole 121 formed in the front panel 120. The latch guide 601 may be received in the latch guide hole 121. The latch guide 601 may be located on a side of the latch 500 to prevent side-to-side movement of the latch.
As shown in
In summary, the latch 500 may be coupled to the front panel 120 such that it is immobilized by the coupling member 700, the latch guide 601, and the latch restrictor 560.
As shown in
The latch 500 may include a bracket 502a projecting from a back surface of the front panel 1120, and a bracket opening 502b may be formed in the bracket 502a for the coupling member 700 to penetrate.
A front panel coupling opening 123 is also formed in the front panel 120 to correspond to the passage of the latch 500, through which the coupling member 700 can pass.
The coupling member 700 is coupled through the coupling opening 502 formed in the latch 500 and the front panel coupling opening 123 formed in the front panel 120, thereby allowing the latch 500 and the front panel 120 to be coupled to each other. That is, the coupling opening 502 and the front panel coupling opening 123 may be aligned with each other such that the coupling member 700 extends therethrough.
The cover member 600 may include a fastening groove 602 to which the coupling member 700 is fastened. Since the fastening groove 602 may receive an end (e.g., a distal end_ of the coupling member 700, the coupling member 700 may not be exposed at the front of the cover member 600. Since the end of the coupling member 700 does not protrude outwardly from the cover member 600 in the front direction, aesthetics may be improved and stability may be enhanced.
As shown in
The detecting members 530, 540 may include detecting buttons 531, 541. The detecting portion button formed on the first detecting portion 530 may be referred to as the first detecting portion button 531, and the detecting portion button formed on the second detecting portion 540 may be referred to as the second detecting portion button 541.
If there is only one detecting part 530, 540, the detecting part 530, 540 may be activated not only by the opening and closing of the door 300, but also by artificially manipulating the detecting part 530, 540. To prevent such malfunctions, the detecting elements 530, 540 may be formed in two latch 500 s to detect only the opening and closing of the door 300. Two latches 500 may be formed symmetrically on the back of the front panel 120, and only one latch 500 may have two detecting portions formed thereon, while the other latch 500 may have only one detecting portion formed thereon. Here, both latches 500 can perform the aforementioned functions without having two detecting portions.
Describe how latch 500 works.
Referring to
The elastic member 550 may include a first elastic member 551 and a second elastic member 552 which is coupled to an end of the first elastic member 551 to efficiently hold the first latch lever 510 biased in a lowered state. The elastic member 550 may further include a third elastic member 553 located adjacent a first end of the first latch lever 510 and a second end of the second latch lever 520 and elastically biased in a direction to lower the second latch lever.
As shown in
The first latch lever 510 can be rotated upward to press first detecting section button 531 included in first detecting section 530. The second latch lever 520 can rotate upward and press the second detecting portion button 541 included in the second detecting portion 540. A control portion (not shown) of the cooking apparatus 1, which is connected to the sensor described above, may determine that the door 300 is in a closed state when the first detecting portion button 531 and the second detecting portion button 541 are pressed together with each other. The control portion of the cooking apparatus 1 may be a controller, a processor, a computer or other electronic device including the controller, etc., without being limited thereto. Determination of opening or closing of the door 300 may use a method of detecting changes in capacitance within the latch 500, without being limited thereto.
When the door 300 is in the open state, the key door 302 exits or is retracted from the latch 500 through the latch restrictor groove 560. This retraction causes the first latch lever 510 to rotate downward (e.g., in a clockwise direction), the second latch lever 520 to rotate downward, and the detecting buttons 531, 541 to return to their un-depressed state. In this way, the open state of the door 300 can be detected. When the open state of the door 300 is detected, the generation of the high frequency may be blocked.
As shown in
The cover member 600 may be formed in a roughly square frame shape, e.g., the cover member 600 may define or include a cover member opening 603. When the door 300 is in the closed state, a portion of the door 300 may be received in the cover member opening 603. When the door 300 is in the closed state, the cover member 600 may be formed to enclose a portion of the door side 303.
As shown in
Other embodiments of the present invention will be described in detail below.
As previously described, in the form shown in
As shown in
The outer housing 100 may have a roughly cuboidal shape that includes a front panel 120, an upper panel 110b, side panels 110a, 110c, a back panel 130 (
In this case, the door 300 may be rotatably coupled to the front panel 120 of the outer housing 100 to open and close a collective opening in the outer housing 100 and the inner housing 200.
The cooking apparatus 1 may include a manipulation portion 800 coupled to a front of the front panel 120 of the outer housing 100. The manipulation portion 800 of the cooking apparatus 1 allows a user to provide input to the cooking apparatus 1 to perform various operations of the cooking apparatus 1. The manipulation portion 800 is coupled to the front of the outer housing 100, so that a portion of the front panel 120 can be hidden from view from the outside. To avoid hiding the cooking room 201, the manipulation portion 800 may be coupled to a portion of the front panel 120 that does not correspond to the cooking room 201, that is, to a side portion of the front panel 120, along the B direction. That is, the manipulation portion 800 through which an input is provided to the cooking apparatus 1 may cover
Since the door 300 can be rotated from the front of the outer housing 100 to conceal the front panel 120 of the outer housing 100, the manipulation portion 800 that engages with the front panel 120 from the front of the outer housing 100 can also be concealed. In this case, since the manipulation portion 800 protrudes toward the front of the cooking apparatus 1 more than the front panel 120, the door 300 may include a manipulation portion door 320 to receive and hide the manipulation portion 800, and a cooking room door 310 to face and hide the cooking room 201, corresponding to the shape of the manipulation portion 800. In other words, the door 300 may have a flat shape across an entire width of the cooking apparatus 1 along the B direction, when viewed from the front, so that the manipulation portion door 320 may be formed with a thickness less than the thickness of the manipulation portion 800.
The door 300 may include a key door 302. The key door 302 may include a shape that protrudes toward the rear of the cooking apparatus 1 when the door 300 is in the closed state. The key door 302 may interact with the latch 500, which will be described later, to detect opening and closing of the door 300 of the cooking apparatus 1. The key door 302 will be described in more detail later with reference to
As shown in
A manipulation portion 800 may be coupled to the front of the front panel 120 of the outer housing 100. A manipulation portion opening 120b may be formed in the front panel 120 corresponding to the portion to which the manipulation portion 800 is coupled. The manipulation portion opening 120b may be an enclosed opening in a plan view (e.g., a view along the A direction of the plane defined in the B-C directions), which is provided or defined by portions of front panel 120. Through the manipulation portion opening 120b, the manipulation portion 800 may be connected to an internal electrical appliance (not shown).
The manipulation portion 800 may be coupled to the front panel 120 with the manipulation portion opening 120b hidden. The manipulation portion 800 may cover the front of the separation space 104, thereby preventing the electronics from being exposed to the outside and protecting the inner housing 200.
In this case, when the manipulation portion 800 is coupled to the front panel 120, the manipulation portion 800 may protrude toward the back surface of the front panel 120 through the manipulation portion opening 120b formed in the front panel 120. In this case, the manipulation portion 800 may protrude toward the separation space 104 formed on or at the back surface of the front panel 120.
At the back surface of the front panel 120 of the outer housing 100, the front panel 120 may be coupled with a latch 500 that interacts with the key door 302 formed in the door 300 to detect opening and closing of the door 300. In this case, the latch 500 may protrude toward the separation space 104 formed at the back surface of the front panel 120.
In other words, the separation space 104 may house the detecting portion 800 and the latch 500.
As shown in
A door 300 may be positioned on front of the front panel 120. On the front side of the front panel 120, a manipulation portion 800 may be positioned. The manipulation portion 800 may be positioned between the front panel 120 and the door 300, so that a rear shape of the door 300 may be formed corresponding to a shape in which the manipulation portion 800 protrudes toward the front side of the cooking apparatus 1. Accordingly, the manipulation portion door 320, which is a first portion of the door 300 in a position corresponding to the manipulation portion 800, may be thinner than the cooking room door 310, which is a second portion of the door 300 in a position corresponding to the cooking room 201 and adjacent to the first portion of the door 300.
The door 300 may include a key door 302 protruding in the direction of the latch 500.
The front panel 120 may include a front panel key door opening 122 as a door key opening provided in a position corresponding to the key door 302. The front panel key door opening 122 may be formed larger than a cross-section of the key door 302 to allow the key door 302 to easily move through the front panel key door opening 122. The key door 302 may be able to penetrate the front panel key door opening 122 of the front panel 120, in a direction from the front to the back of the front panel 120, and interact with the latch 500 to detect the opening and closing of the door 300.
A location for the key door 302 of the door 300 may be provided on the side of the cooking room door 310. The manipulation portion 800 is positioned relative to the manipulation portion door 320, so that when the door 300 is in the closed state, the key door 302 may not contact the manipulation portion 800.
A manipulation portion 800 may be coupled to the front of the front panel 120. The manipulation portion 800 may include a manipulation portion cover 810 that forms an exterior of the manipulation portion 800. The manipulation portion cover 810 may be sized to be wider than the width of the manipulation portion opening 120b of the front panel 120. Thus, when the manipulation portion cover 810 is coupled to the manipulation portion opening 120b, the manipulation portion opening 120b may be generally obscured.
The manipulation portion cover 810 may be provided with an inwardly recessed space. A recess may be open at the rear of the manipulation portion cover 810 and recessed in a direction from the front to the rear. A manipulation portion PCB 820, which controls the operation of the manipulation portion 800, may be located in the receiving space of the manipulation portion cover 810. The manipulation portion PCB 820 may be protected from external impact by the manipulation portion cover 810.
The manipulation portion 800 may include a manipulation portion protrusion 801 that protrudes in a direction opposite to the direction facing the manipulation portion cover 810. The manipulation portion protrusion 801 may be provided at the bottom of the manipulation portion cover 810.
The front panel 120 can include a manipulation portion protrusion receiving hole 125 positioned relative to the manipulation portion protrusion 801. The manipulation portion protrusion 801 may be received in the manipulation portion protrusion receiving hole 125 to couple the manipulation portion 800 to the front panel 120. As the manipulation portion protrusion 801 may be provided at the bottom of the manipulation portion cover 810, the manipulation portion protrusion 801 receiving hole 125 may be provided at the bottom of the manipulation portion opening 120b, such as being adjacent to such opening.
The front panel 120 may include an opening connecting portion 120c formed between the cooking room opening 120a and the manipulation portion opening 120b. The opening connecting portion 120c may not be an impenetrable opening, and thus may protect electrical components located on the backside of the opening connecting portion 120c. Both the cooking room opening 120a and the manipulation portion opening 120b may be enclosed openings of the front panel 120, provided by solid portions of the front panel 120. The cooking room opening 120a and the manipulation portion opening 120b may be divided by the opening connecting portion 120c as a solid portion of the front panel 120 which assists in defining the two openings.
The latch 500 may be coupled to a back surface of the front panel 120 by a coupling member 700. The front panel 120 may include a front panel coupling opening 123 through which the coupling member 700 may penetrate. The coupling member 700 can penetrate the front panel coupling opening 123 and engage the latch 500, thereby coupling the latch 500 to the front panel 120. As previously discussed, when the latch 500 is coupled to the back surface of the front panel 120, the opening and closing of the door can be accurately detected.
Specifically, the latch 500 may be coupled to an opening connecting portion 120c of the front panel 120. If the front panel 120 includes a cooking room opening 120a and a manipulation portion opening 120b, there may not be much of a portion of the front panel 120 left for the latch 500 to be coupled to. Therefore, in order for the latch 500 to engage the front panel 120, it may be coupled to the opening connecting portion 120c.
Considering that the latch 500 can be coupled with the coupling member 700 through the front panel opening connecting portion 120c, the front panel coupling opening 123 can be located on or defined in the opening connecting portion 120c. In other words, the front panel coupling opening 123 may be located on the opening connecting portion 120c in the shape of a hole or an enclosed opening.
The key door 302, which is included with the door 300, must interact with the latch 500 when the door 300 is in the closed state, so that the key door 302 can pass through the front panel 120 at a position corresponding to the latch 500. Considering that the latch 500 may be located on the back side of the opening connecting segment 120c, the front panel key door opening 122 of the front panel 120 through which the key door 302 penetrates may also be located on the opening connecting segment 120c.
Since the coupling member 700 engages the front panel 120 and the latch 500 through and through (e.g., such as extending completely through thicknesses of both elements), in general, when the door 300 is in the open state, an end of the coupling member 700 may be visible from the outside. If the ends of the coupling member 700 are visible from the outside, it is easy to separate the coupling member 700 from the cooking apparatus 1, and the cooking apparatus 1 may appear less aesthetically pleasing when the door 300 is opened.
To prevent the phenomenon, the coupling member 700 may be coupled with the front panel 120 and the latch 500 in a position that is obscured by the manipulation portion 800.
Since the manipulation portion 800 is located in front of the manipulation portion opening 120b of the front panel 120, and adjacent to the manipulation portion opening 120b is the opening connecting portion 120c, the front panel coupling opening 123 may be located on the opening connecting portion 120c of the front panel 120.
In other words, a front panel key door opening 122 and a front panel coupling opening 123 may be located on the opening connecting portion 120c.
The latch 500 and the front panel 120 are coupled to each other by the coupling member 700. To make the engagement location more precise, the front panel 120 may include a latch guide 120d. The latch guide 120d may have a shape such that a portion of the opening connecting portion 120c is bent and protrudes in a direction opposite to the direction facing the door 300. Thus, the latch 500 is limited in its movement in the side-to-side direction (e.g., along the B direction) by the latch guide 120d so that it can be positioned in a precise location for engagement with the front panel 120. Once in the correct position, the front panel coupling opening 123 included in the front panel 120 and the coupling opening 502 included in the latch 500 are aligned, and thus can be better engaged by the coupling member 700.
To better engage the latch 500 and the front panel 120, the front panel 120 may include a latch protrusion accommodating hole 120e in a portion of the latch guide 120d. The latch 500 may form a latch protrusion 501a at a location corresponding to the latch protrusion accommodating hole 120e. The latch protrusion 501a may be received in the latch protrusion accommodating hole 120e to better couple the latch 500 to the front panel 120.
As shown in
As shown in
In the following, we will briefly discuss the operation of the latch 500.
When the door 300 is in the closed state, the key door 302 enters the latch housing 501 of the latch 500 through the key door opening 503. Inside the latch housing 501, detecting members 530, 540, 540′ may be located. The detecting members 530, 540, 540′ may be a micro switch. The closed state of the door 300 may be detected by the detecting members 530, 540, 540′ when the key door 302 presses the detecting member buttons 531, 541, 541′ of the detecting members 530, 540, 540′ within the latch 500.
While there may be one set of such key doors 302 and detecting members 530, 540, 540′, the invention is not limited thereto. In an embodiment, the cooking apparatus 1 includes a pair of key doors 302 and a pair of detecting members 530, 540, 540′, respectively on the left and right of the apparatus (e.g., along the B direction), or a pair on the top and bottom of the apparatus (e.g., along the C direction), since high frequencies may escape when the door 300 is detected to be closed while the door 300 is warped closed. In the present disclosure, a pair of key doors 302 corresponding to a pair of key door openings 503, and a single set of detecting elements 530, 540, 540′, are used as an example, but are not limited thereto.
If there is one pair of key doors 302 and a corresponding set of detecting members 530, 540, 540′ at positions of the top and bottom of the apparatus, there may be a single one latch housing 501 to accommodate them, or there may be a respective housing configured to accommodate each set within one shape. The present disclosure is illustrated as having one latch housing 501, but is not limited thereto.
The detecting elements 530, 540, 540′ may be present at each position corresponding to the key door 302, but the invention is not limited thereto. In an embodiment, the cooking apparatus 1 may include three detecting members 530, 540, 540′ as safety standards may require at least three detecting members 530, 540, 540′. That is, a detecting element may be provided in plural including a first detecting portion 530, a second detecting portion 540, and a third detecting portion 540′.
Since the key door 302 is positioned correspondingly to at least one of the detecting members 530, 540, 540′, a plurality of latch levers 510, 520 may be required if the key door 302 operates more than one detecting portion. Accordingly, the latch 500 may include the latch leaver provided in plural including the latch levers 510, 520.
As shown in
The latch housing 501 can accommodate each of the detecting members 530, 540, 540′. The latch housing 501 may include a latch coupling housing 501b which is a portion in which the detecting members 530, 540, 540′ are variously housed, and a latch supporting housing 501c in which the detecting members 530, 540, 540′ are not housed. When the detecting members 530, 540, 540′ are located in up and down positions, and the upper and lower latch housings 501 are formed as a unit, the latch coupling housing 501b may be located at both of the upper and lower sides, respectively, and the latch supporting housing 501c may be located between them and coupled to the respective latch coupling housings 501b.
When the door 300 is in a closed state, the key door 302 must contact the detecting members 530, 540, 540′ housed inside the latch housing 501 so that the detecting members 530, 540, 540′ can recognize the closed state of the door 300. As such, the key door opening 503 formed inside the latch housing 501 can be located on the latch coupling housing 501b. As being in contact, elements may form an interface therebetween, without being limited thereto.
It is by the interaction of the key door 302 and the detecting members 530, 540, 540′ that the latch 500 recognizes the closed state of the door 300. Therefore, for accurate detection, the distance between the detecting parts 530, 540, 540′ and the key door 302 must be accurately calculated. For this purpose, the coupling opening 502, which is the part to which the coupling member 700 is coupled, is located on the latch coupling housing 501b.
If the coupling opening 502 is located in the latch coupling housing 501b, the latch supporting housing 501c connecting the latch coupling housings 501b to each other need not be located adjacent to the door front panel 120 for the latch 500 to function. Therefore, the latch supporting housing 501c may have a concave shape in a direction away from the front panel 120. This may reduce the amount of material required to manufacture the latch 500, thereby lowering the manufacturing cost.
The side of the latch housing 501 facing the front panel 120, and the front panel 120, are adjacent to each other, so that the latch 500 and the front panel 120 are engaged with each other. In this case, the side of the latch housing 501 facing the front panel 120 may form a latch recess 504 concave in a direction opposite to the direction facing the front panel 120.
The latch housing 501 may be formed by a plastic injection to be a plastic injected member. When the latch housing 501 and the front panel 120 are engaged with each other, if the latch housing 501 is a plastic injected member, the latch housing 501 may be deformed or change shape due to the engagement force. In other words, the latch housing 501 on the side where the coupling member 700 engages may be squashed in shape and may engage the front panel 120 closer than originally intended.
In this case, if the location where the coupling member 700 is to engage the latch housing 501 is near the left and right center axis of the latch 500 when viewed from the left and right, then engaging close to that portion of the latch 500 may only move the left and right ends of the latch 500 away from the front panel 120. In this case, since the detecting portion is located near the left and right center axes of the latch 500, it does not affect where the detecting portion interacts with the key door 302.
However, if the position at which the coupling member 700 is to be engaged with the latch housing 501 is biased to the left or right, the opposite side of the side to be engaged moves away from the front panel 120. In this case, since the detecting portion on the center side also moves away from the front panel 120, the positional relationship between the detecting portion and the key door 302 changes. Therefore, in this case, the position at which the detecting portion and the key door 302 interact may be affected.
As described above, if the latch housing 501 is coupled to the back side of the front panel 120 at the opening connecting portion 120c, together with the coupling member 700 being coupled at a position where the coupling member 700 is obscured by the manipulation portion 800, the position where the latch housing 501 and the coupling member 700 are coupled becomes one side of the latch housing 501. If the side of the latch housing 501 facing the front panel 120 is flat, in this case, the position relationship of the detection part and the key door 302 may be distorted, and accurate detection of the opening and closing of the door 300 may become difficult.
As shown in
The latch recess 504 may be shaped as a curved surface, but may also include a combination of planes for ease of manufacturing. The latch recess 504 may be a combination of two planes. Referring to the two planes as a first latch plane 504a and a second latch plane 504b, respectively, the latch recess 504 may further include a latch plane connecting portion 504c where the first latch plane 504a and the second latch plane 504b meet.
Since the latch housing 501 is coupled adjacent to the front panel 120, the latch plane connecting portion 504c may have a shape corresponding to the shape of the front panel 120. If the front panel 120 of the corresponding portion of the latch plane connecting portion 504c has a stepped shape, the shape of the latch plane connecting portion 504c may also be a stepped shape. By making the shapes of the front panel 120 and the latch plane connecting portion 504c correspond, it is possible to more closely couple the front panel 120 and the latch housing 501.
As shown in
The portion where the latch housing 501 touches the front panel 120 by the latch recess 504 may be referred to as the latch end portion 504d. To summarize, the latch recess 504 may include or be defined by a first latch plane 504a, a second latch plane 504b, a latch plane connecting portion 504c, and a latch end portion 504d. In an embodiment, for example, the surface of the latch housing 501 which defines the latch recess 504 includes a first surface in a first plane (e.g., along dotted line ‘A’ in
At a side of the latch housing 501 closest to the front panel 120 a latch protruding portion 505 protrudes toward the front panel 120. A plurality of planes may be made by connecting the ends of the latch protruding portion 505 which are closest to the front panel 120, where the plurality of planes may include a first latch plane 504a and a second latch plane 504b together forming the latch recess 504. Since the-described effect is produced by the shape of the part of the latch housing 501 that contacts the front panel 120, when forming the latch protruding portion 505, it is possible to have the-described effect if the plane formed by the ends of the latch protruding portion 505 has the features. In this case, it is not necessary to form the first latch plane 504a and the second latch plane 504b on all of the sides facing the front panel 120 of the latch housing 501, so less material can be used to manufacture the latch housing 501. Therefore, in this case, the cost of manufacturing the latch housing 501 may be reduced.
Since the first latch plane 504a may be formed corresponding to a position of the key door opening 503 and the second latch plane 504b may be formed corresponding to a position of the coupling opening 502, the latch protruding portion 505 may also be formed around the key door opening 503 and the coupling opening 502, respectively, in the plan view (e.g., an A-C plane). The latch protruding portion 505 formed around the key door opening 503 may be referred to as the first latch protruding portion 505a, and the latch protruding portion 505 formed around the coupling opening 502 may be referred to as the second latch protruding portion 505b.
In other words, the first latch plane 504a and the second latch plane 504b can form a latch recess 504 that is recessed in the opposite direction of the direction in which the latch 500 faces the front panel 120.
The latch recess 504 may include a first latch plane 504a together with a second latch plane 504b, a latch plane connecting portion 504c that connects the first latch plane 504a and the second latch plane 504b to each other, and a latch end portion 504d that is the portion where the latch housing 501 abuts (and contacts) the front panel 120.
As shown in
When the latch housing 501 is engaged with the front panel 120, the latch housing 501 may include a latch recess 504 so that only the latch end portion 504d is in contact with the front panel 120. This allows the latch 500 to engage in a precise location, and the key door 302 to be inserted into the latch housing 501 precisely so that the interaction of the key door 302 with the detecting portion can occur accurately. Thus, the opening and closing of the door 300 can be accurately detected.
Specific embodiments have been shown and described above. However, the invention is not limited to the embodiments, and one having ordinary skill in the art to which the invention belongs will be able to make various modifications without departing from the spirit of the technical idea of the invention set forth in the following claims.
In an embodiment, a cooking apparatus 1 includes a coupling member 700 which couples the latch to the front panel 120 of the outer housing 100, and a manipulation portion 800 through which an input is provided to the cooking apparatus 1 from outside thereof, the manipulation portion 800 coupled to the front panel 120 at a front side of the front panel 120 which is opposite to the back surface. The manipulation portion 800 coupled to the front panel 120 covers the coupling member 700 which couples the latch 500 to the front panel 120. The cooking apparatus 1 having the door 300 which is open includes the manipulation portion 800 visible from outside of the cooking apparatus 1, together with the coupling member 700 which is covered by the manipulation portion 800 being invisible from the outside of the cooking apparatus 1.
In an embodiment, the latch 500 includes a latch housing 501 which forms an exterior of the latch 500. The latch housing 501 includes a surface which faces the back surface of the front panel 120 of the outer housing and defines a latch recess 504 which is concave in a direction away from the front panel 120, and the surface includes end portions 504d at opposing sides of the latch recess 504, both of the end portions in contact with the back surface of the front panel 120. A detector (e.g., 530, 540 and/or 540′) which is coupled to the latch housing 501 at an interior of the latch housing 501 detects the opening and closing of the door 300.
In an embodiment, the surface of the latch housing 501 which defines the latch recess 504 includes a first surface in a first plane, and a second surface in a second plane which forms an angle with the first plane. A coupling member 700 couples the latch 500 to the front panel 120 of the outer housing 100, at a portion of the latch housing 501 which is spaced apart from the back surface of the front panel 120. Each of the first surface and the second surface of the latch housing 501 is spaced apart from the back surface of the front panel 120, and a distance by which the portion of the latch housing 501 is spaced apart from the back surface of the front panel 120 is greater than respective distances by which the first surface and the second surface are spaced apart from the back surface of the front panel 120. The surface of the latch housing 501 which faces the back surface of the front panel 120 includes a latch protruding portion projecting toward the front panel, and the latch protruding portion defines the first surface and the second surface.
In an embodiment, the back panel is opposite to the front panel 120 of the outer housing 100, in a direction, the door includes a door key (e.g., key door 302) which protrudes in the direction and is engageable with the latch 500 in detection of the opening and closing of the door 300 by the latch 500. The latch housing 501 defines a door key opening of the latch housing through which the door key of the door is received, and a coupling member opening of the latch housing in which the coupling member is received The latch protruding portion extends around the door key opening or the coupling member opening. Within the latch housing, the door key opening is defined in the first surface, and the coupling member opening is defined in the second surface.
In an embodiment, the front panel of the outer housing includes a side of the opening connection portion which is bent to define a latch guide, and a latch protrusion accommodating hole defined in the latch guide. The latch housing includes a latch protrusion which is received in the latch protrusion accommodating hole of the opening connecting portion.
In an embodiment, a cover member is coupled to the outer housing and faces a front surface of the front panel which is opposite to the back surface of the front panel. The door includes a side, and the cooking apparatus having the door which is closed includes the cover member surrounding the side of the door.
In an embodiment, the coupling member penetrates the latch and the front panel of the outer housing in the coupling of the latch to the front panel, and the coupling member which extends into the fastening groove of the cover member is covered by the cover member to be invisible from the outside of the cooking apparatus.
In an embodiment, the cover member defines a cover member opening, and the cooking apparatus having the door which is closed includes a portion of the side of the door accommodated in the cover member opening.
In an embodiment, the detector of the latch includes a detector button, the door includes a door key which is engageable with the latch in detection of the opening and closing of the door by the latch, and the closing of the door includes the door key of the door engaged with the latch together with the detector button actuated by engagement of the door key with the latch.
In an embodiment, the detector of the latch is provided in plural including a plurality of detectors actuated in the closing of the door, the door includes a door key which is directly engageable with one detector among the plurality of detectors in the detecting of the opening and closing of the door by the latch, and the closing of the door includes the door key of the door directly engaged with the one detector of the latch together with the each of the plurality of detectors being actuated.
In an embodiment, a cooking apparatus includes a housing in which a cooking space is defined, the housing including a front panel at which the cooking space is open to outside the housing, a door which faces a front surface of the front panel, the door being openable and closeable to respectively expose and close the cooking space relative to the outside of the housing, and a detector which detects opening and closing of the door and faces a back surface of the front panel which is opposite to the front surface of the front panel. The door which is closed includes the door extending through the front panel, in a direction from the front surface to the back surface of the panel, together with the door directly engaging with the detector. Here, a surface of the detector which faces the back surface of the front panel is concave in a direction away from the front panel to define a recess of the detector, along the surface of the detector, the recess is defined by a first surface in a first plane, and a second surface which is in a second plane which forms an angle with the first plane, the second plane being closer to the front panel than the first surface, and the door which is closed includes the door extending through the front panel at a location corresponding to the second surface.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2021-0042355 | Mar 2021 | KR | national |
| 10-2021-0077455 | Jun 2021 | KR | national |
| 10-2021-0082626 | Jun 2021 | KR | national |
| 10-2021-0096203 | Jul 2021 | KR | national |
This application is a continuation application of International Application No. PCT/KR2022/004033, designating the United States, filed on Mar. 23, 2022, at the Korean Intellectual Property Receiving Office and claiming priority to Korean Patent Application No. 10-2021-0042355, filed on Mar. 31, 2021, Korean Patent Application No. 10-2021-0077455, filed on Jun. 15, 2021, Korean Patent Application No. 10-2021-0082626, filed on Jun. 24, 2021 and Korean Patent Application No. 10-2021-0096203, filed on Jul. 22, 2021, at the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/KR2022/004033 | Mar 2022 | US |
| Child | 18474598 | US |
