Patent Application
20250017375
The present disclosure relates to a height adjustable armrest assembly and a chair including the same, and more specifically, to a height adjustable armrest assembly and a chair including the same, which can minimize user discomfort when tilting a backrest.
Generally, as shown in
Here, as shown in
However, in the case of a chair 1 in which an armrest assembly 40 according to the related art configured as described above is integrally assembled to the seat plate part, when the backrest part 20 is tilted backward, while the user's arms are placed obliquely backward, the armrest assembly 40 is integrally provided to the seat plate part and thus an angle of the user's arm actually differs from an angle of an upper surface of the armrest assembly 40, resulting in a problem that the user complains of discomfort.
In addition, when the backrest part 20 is tilted backward, the user's arms also move a predetermined distance backward, and since the armrest assembly 40 is provided so that the height may be adjusted only vertically, there is a problem that a part where the user's arm is placed relatively moves away. That is, as shown in
In addition, although not shown in the drawing, even when the armrest assembly 40 is provided to slide in the front-rear direction at the same time as the tilting movement, there is a concern that a gap occurs between a tilting arm pad part and a fixing bracket part that fixes the same among components of the armrest assembly 40 when tilting to cause the user's finger, etc. to get caught in the gap, causing injury.
The present disclosure has been made in efforts to solve the above problems and is directed to providing a height adjustable armrest assembly and a chair including the same, in which an inclined angle is adjusted as a tilting arm pad part of the armrest assembly also slides in a front-rear direction corresponding to a tilting angle of a backrest.
In addition, the present disclosure is directed to providing a height adjustable armrest assembly and a chair including the same, which can prevent a user's injury by designing a structure so that a safety cover part is linked with only tilting movement when a tilting arm pad part tilts and slides.
The objects of the present disclosure are not limited to the above-described objects, and other objects that are not described will be able to be clearly understood by those skilled in the art from the following description.
A height adjustable armrest assembly according to the present disclosure includes a fixing bracket part having an inner space, and a lifting part provided to move vertically on an upper portion of the fixing bracket part, wherein the lifting part is formed so that a portion of a rotating lock part locked to or unlocked from the fixing bracket part is rotated forward in the inner space of the fixing bracket part.
Here, the lifting part may include a lifting box provided to move vertically in the inner space of the fixing bracket part, a lifting body formed integrally on the lifting box, and a lifting button part installed on the lifting body and pushed and rotated by an external force provided by a user, and the rotating lock part may be formed so that a lock pin within a rotating radius protrudes toward a front end portion of the lifting body in conjunction with the lifting button part.
In addition, the lifting button part may be connected to be linked via a lifting connection member connecting the rotating lock part.
In addition, the inner space of the fixing bracket part may be coupled to a locking case provided to cover one side of the lifting box and formed with a plurality of locking holes into which the lock pin of the rotating lock part is locked by being inserted and which are vertically spaced apart from each other, and a guide panel provided to cover the other side of the lifting box and formed with a pair of lifting guide slots guiding the vertical movement in the inner space of the fixing bracket part of the lifting box.
In addition, the plurality of locking holes formed in the locking case may be formed in a portion in contact with an inner surface of the front end portion of the fixing bracket part, and the lock pin of the rotating lock part may be rotated around a rotating point, which is set in a left-right direction, in a front-rear direction.
In addition, the guide panel and the locking case may be coupled by hook-fastening a hook locking end formed to protrude outward from an outer surface of a lower end portion of the guide panel to a hook fastening groove provided inside the fixing bracket part in an intercoupled state.
In addition, the lifting connection member may have an upper end portion connected to an inner end portion positioned inside the lifting body of the lifting button part and a lower end portion connected to a portion spaced by a predetermined distance from the rotating point of the rotating lock part of the rotating lock part.
In addition, the rotating lock part may have an elastic member configured to elastically restore the rotating lock part to its original position depending on whether the user's external force is provided via the lifting connection member.
In addition, the elastic member may provide an elastic force in a direction that is locked by being inserted into one of the plurality of locking holes formed to be vertically spaced apart from each other in the front end portion of the locking case when the user unpushes the lifting button part.
In addition, the fixing bracket part may be fixed to both left and right end portions of a seating plate part, and the inner space of the fixing bracket part may be formed to be open upward.
A chair according to one embodiment of the present disclosure includes a seating plate part on which a user sits, a pair of armrest assemblies which is provided at both left and right portions of the seating plate part and on which the user's arm is placed, and a backrest part having an upper end portion provided to tilt around a lower end portion in a front-rear direction on a rear end portion of the seating plate part, wherein the pair of armrest assemblies include a fixing bracket part fixed to the both left and right end portions of the seating plate part and having an inner space that is open upward, and a lifting part provided to move vertically on an upper portion of the fixing bracket part, the lifting part includes a lifting box provided to move vertically in the inner space of the fixing bracket part, a lifting body formed integrally on the lifting box, a lifting button part installed so that a portion is exposed outward from the lifting body and pushed and rotated by an external force provided by a user, a rotating lock part locked to or unlocked from the fixing bracket part in conjunction with the lifting button part, and a lifting connection member connecting the lifting connection member to the rotating lock part, and the rotating lock part has a lock pin locked to or unlocked from the fixing bracket part formed to protrude toward a front end portion of the lifting body.
According to the armrest assembly and the chair including the same according to one embodiment of the present disclosure, it is possible to prevent the user's injury by sliding the tilting arm pad part of the armrest assembly in a front-rear direction corresponding to the tilting angle of the backrest part so that the inclined angle is adjusted and designing the structure so that the safety cover part is linked with only tilting movement when the tilting arm pad part tilts and slides.
Hereinafter, a height adjustable armrest assembly and a chair including the same according to one embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.
In adding reference numerals to components in each drawing, it should be noted that the same components have the same reference numerals as much as possible even when they are illustrated in different drawings. In addition, in describing embodiments of the present disclosure, the detailed description of related known configurations or functions will be omitted when it is determined that the detailed description obscures the understanding of the embodiments of the present disclosure.
The terms, such as first, second, A, B, (a), and (b) may be used to describe components of the embodiments of the present disclosure. These terms are only for the purpose of distinguishing one component from another component, and the nature, sequence, order, or the like of the corresponding component is not limited 5 by the terms. In addition, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure pertains. The terms defined in a generally used dictionary should be construed as meanings that match with the meanings of the terms from the context of the related technology and are not construed as an ideal or excessively formal meaning unless clearly defined in this application.
According to one embodiment of the present disclosure, as shown in
Hereinafter, for convenience of description, since both the pair of armrest assemblies 100 are the same except that their configurations are formed symmetrically in a left-right direction, the description of the armrest assembly 100 provided at a right end portion of the seat plate part 300 in
As shown in
As shown in
Here, the armrest assembly 100 according to one embodiment of the present disclosure may further include a tilting coupling part (no reference numeral) that interconnects the lifting part 150 and the tilting arm pad part 140 and tilts the tilting arm pad part 140 together with the safety cover part 210 around any tilting rotating point or slides only the tilting arm pad part 140 in the front-rear direction.
As shown in
That is, the fixing bracket part 141 is formed to be bent in an “L” shape and has a lower end portion of a horizontal area coupled to a lower portion of the seat plate part 300 via the seat coupling block 130 and coupled to have an adjustable height by vertically moving the lifting part 150 to the inner space 141s corresponding to an upper end portion of a vertical area.
The lower end portion excluding the upper end portion of the lifting part 150 may be coupled by being fitted into the inner space 141s of the fixing bracket part 141 from the top to the bottom. The lifting part 150 may be provided to move vertically within the range of an internal height formed by the inner space 141s of the fixing bracket part 141 so that the overall height of the armrest assembly 100 according to one embodiment of the present disclosure may be adjusted.
More specifically, as shown in
A locking case 152 provided to surround one side of the lifting box 151 and formed with a plurality of locking holes 152a vertically so that a lock pin 154a of the rotating lock part 154 is locked by being inserted, and a guide panel 153 provided to surround the other side of the lifting box 151, fixed to the fixing bracket part 141, and formed with a lifting guide slot 153a guiding the vertical movement of the lifting box 151 may be coupled to the inner space 141s of the fixing bracket part 141.
Here, the lock pin 154a of the rotating lock part 154 may be a portion provided within a rotation radius of the rotating lock part 154 and formed to rotate forward in the inner space 141s of the fixing bracket part 141.
A hook locking end 153b may be provided to protrude from an outer surface of a lower end portion of the guide panel 153, and a hook fastening groove (not shown) in which a hook locking end 153b is hook-fastened may be provided in a lower side of the inner space 141s of the fixing bracket part 141.
That is, the locking case 152 and the guide panel 153 are in a mutually coupled state, and the hook locking end 153b formed to protrude outward from the outer surface of the lower end portion of the guide panel 153 may be coupled by being hook-fastened to the hook fastening groove provided inside a lower end portion of the inner space 141s of the fixing bracket part 141.
The guide panel 153 may function to guide the vertical movement of the lifting box 151 that moves vertically when the height of the tilting arm pad part 140 to be described below is adjusted.
To this end, the guide panel 153 may have a pair of lifting guide slots 153a formed to extend vertically and formed to be spaced apart from each other in the front-rear direction, and a pair of lifting guide protrusions 151a inserted into the pair of lifting guide slots 153a, respectively, may be formed on the other side surface of the lifting box 151 covered by the guide panel 153.
As shown in
More specifically, the tilting arm pad part 140 may be coupled to an upper end portion of the lifting body 144 via a tilting coupling part (no reference numeral) including the rotating coupling part 220 and the rotating link part 230.
As shown in
More specifically, as shown in
Here, the coupling pad 145a may have a rear end slot 146 formed to guide the tilting arm pad part 140 when sliding in the front-rear direction with respect to the rotating coupling part 220 integrally formed on the upper end portion of the lifting body 144.
The hinge-shaped upper end portion forming the tilting rotating point of the rotating coupling part 220 may be inserted into the rear end slot 146, and an upper end portion of the rotating coupling part 220 may be provided with a support wheel (no reference numeral) locked to the rear end slot 146 in the tilting direction of the coupling pad 145a and rotated when the coupling pad 145a slides in the sliding direction.
More specifically, the rear end slot 146 may be formed to be stepped at both left and right end portions so that a pair of support wheels are each locked in the tilting direction and formed to extend in a front-rear direction. Here, the support wheel provided in the rotating coupling part 220 provides any tilting rotating point within the range of the rear end slot 146 when the tilting arm pad part 140 tilts vertically and guides sliding movement in the front-rear direction by a predetermined distance within the range of the rear end slot 146 when the tilting arm pad part 140 slides in the front-rear direction.
At least one elastic member 221 may be interposed in the rotating coupling part 220. The at least one elastic member 221 is compressed by an external force provided by the user when the user naturally presses the rear end portion of the tilting arm pad part 140 with the elbow or pulls the tilting arm pad part 140 backward with his or her hand while tilting the backrest part 120 backward, and when the external force of the user is removed, functions to add an elastic force for restoring the tilted tilting arm pad part 140 to its original position.
The support pad 145b and the inner pad 145c may function to cover the upper portion of the coupling pad 145a in a state in which the rotating coupling part 220 and the rotating link part 230 are coupled by being inserted into the coupling pad 145a to prevent the rotating coupling part 220 and the rotating link part 230 from being observed from the outside, thereby preventing a degradation in exterior.
Meanwhile, the rotating link part 230 may be provided so that a rotating push portion 230R, which is an upper end portion, is supported on a lower surface of the inner pad 145c of the tilting arm pad part 140 around the lower end portion connected to the hinge fixing point 230F provided to be connected to the upper end portion of the lifting body 144.
Here, a front end of the tilting arm pad part 140 may be lifted upward or may move downward by an angle at which the rotating push portion 230R of the rotating link part 230 is rotated to enable vertical tilting movement.
In this way, the tilting arm pad part 140 may have a portion that corresponds to the front end portion relatively with respect to the upper end portion of the rotating coupling part 220 forming any tilting coupling point positioned relatively at the rear end portion and is tilted and rotated vertically by the rotating link part 230 and at the same time, may be slid in the front-rear direction within the range in which the rear end slot 146 is allowed by the external force of the user who pushes the rear end portion of the tilting arm pad part 140 with the elbow or pulls the tilting arm pad part 140 backward in a state of placing his or her arm.
Meanwhile, as shown in
The safety cover part 210 may be coupled to the tilting arm pad part 140 by a guide protrusion 240 protruding upward and inserted into the tilting arm pad part 140 and at the same time, tilted in conjunction with the tilting arm pad part 140 when the tilting arm pad part 140 tilts.
More specifically, the guide protrusion 240 may be inserted into the coupling pad 145a of the tilting arm pad part 140, and a sliding guide slot 148 may be formed to extend in the front-rear direction to be locked in the tilting direction of the tilting arm pad part 140 and to prevent the interference with the sliding direction.
The guide protrusion 240 provided on the safety cover part 210 may be fastened to a protrusion fastening end 240h provided on an upper end portion of the safety cover part 210.
Here, as described above, the guide protrusion 240 may be locked to both left and right end portions of the sliding guide slot 148 when the tilting arm pad part 140 tilts vertically so that the safety cover part 210 may be tilted by being linked with the vertical tilting of the titling arm pad part 140. To this end, the both left and right end portions of the sliding guide slot 148 are preferably formed so that a width of a lower end portion that is open toward the protrusion fastening end 240h is smaller than an outer diameter of the guide protrusion 240 provided in a roller shape.
Therefore, the safety cover part 210 is not linked with the sliding movement of the tilting arm pad part 140 by being locked to the tilting arm pad part 140 in the tilting direction by the guide protrusion 240, being not interfered by the sliding guide slot 148 in the sliding direction, and relatively allowing the sliding movement of the tilting arm pad part 140.
In this way, the safety cover part 210 is tilted by being linked with the tilting arm pad part 140 in the tilting direction of the tilting arm pad part 140 to completely block a space between the tilting arm pad part 140 and the lifting part 150 (in particular, the lifting body part 144), thereby preventing the user's body part such as a finger from being caught. However, the safety cover part 210 does not need to be linked when the tilting arm pad part 140 slides in the front-rear direction and has a non-interference structure for the sliding guide slot 148 to prevent the interference with the sliding movement of the tilting arm pad part 140 that is caused by providing the safety cover part 210.
Here, the safety cover part 210 is preferably formed to have a size that covers at least a separation distance between the front ends of the tilting arm pad part 140 and the lifting part 150 when tilted in conjunction with the tilting arm pad part 140.
Meanwhile, a U-shaped safety space S that is open backward may be formed between the upper end portion of the lifting part 150 and the rear end portion of the safety cover part 210. The U-shaped safety space S functions as a safety securement space for preventing the user's body part from being caught and injured when the tilting arm pad part 140 slides backward and the rear end portion of the tilting arm pad part 140 approaches the backrest part 120 side regardless of whether the backrest part 120 tilts.
As shown in
As shown in
The lifting button part 158 may be provided in a block shape exposed outward from the lifting body 144 to be substantially pushed by the user using a finger, etc. and connected to an upper end portion of the lifting connection member 155.
In addition, although not shown in the drawings, the lifting button part 158 may have an elastic member that may elastically return to its original position when an external force according to the user's pushing operation is removed.
Here, the lifting button part 158 may be exposed so that an inner end portion communicates with the inner space of the lifting box 151, the upper end portion of the lifting connection member 155 may be hinge-connected to the lifting button part 158 inside the lifting box 151, and a lower end portion of the lifting connection member 155 may be hinge-connected to the rotating lock part 154.
The rotating lock part 154 is a member that is provided to rotate around a predetermined hinge point (no reference numeral) in the inner space of the lifting box 151 and may be formed with the lock pin 154a to extend radially from the hinge point, and the lower end portion of the lifting connection member 155 may be connected to transmit a rotational force to the rotating lock part 154 without interfering with the lock pin 154a.
Here, the lock pin 154a of the rotating lock part 154 may be exposed to the outside through a pin hole (no reference numeral) formed in the lower end portion of the lifting box 151 and locked to one of the plurality of locking holes 152a formed to be spaced apart from each other vertically in the locking case 152 provided to cover the one side of the lifting box 151.
More specifically, the lifting button part 158 may be provided at a lower side of a front end portion of the lifting body 144 so that the user may easily perform a pushing operation using his or her index or middle finger, and the rotating lock part 154 may also be provided so that the lock pin 154a is exposed to the outside through a pin hole formed at the lower side of the front end portion of the lifting box 151 or hidden therein.
Here, when the user pushes the lifting button part 158 into the lifting body 144, the lifting connection member 155 may be pulled upward to rotate the rotating lock part 154 in the same direction, and at the same time, the lock pin 154a of the rotating lock part 154 may be separated from one of the locking holes 152a so that the user may adjust the height of the tilting arm pad part 140 by vertically applying an external force to the lifting part 150.
In addition, although the rotating lock part 154 is not shown in the drawings, a predetermined elastic member may be interposed so that the rotating lock part 154 may be elastically restored to its original position depending on whether an external force of the user is provided via the lifting connection member 155. Here, the elastic member may be provided to provide an elastic force in a direction in which the lock pin 154a of the rotating lock part 154 is locked by being inserted into one of the plurality of locking holes 152a when the external force of the user is not provided.
A sliding manipulation process of the tilting arm pad part 140 of the armrest assembly 100 in the front-rear direction according to one embodiment of the present disclosure configured as described above will be briefly described as follows with reference to the accompanying drawing (particularly,
First, as shown in
At the same time, as shown in
In this case, since the rear end portion of the tilting arm pad part 140 and the rear end portion of the lifting body 144 provide sufficient safety space S that can protect the user's arms, etc., regardless of whether the backrest part 400 tilts, there is an advantage that it is possible to prevent the user's injury.
Meanwhile, a height adjustment process of the tilting arm pad part 140 of the armrest assembly 100 according to one embodiment of the present disclosure configured as described above will be briefly described with reference to the accompanying drawings (particularly,
First,
Here, when the user moves the tilting arm pad part 140 by an operation of vertically providing an external force in a state of pushing the lifting button part 158 and then releases the pushing manipulation of the lifting button part 158 at a desired height (e.g., the highest height as shown in
In this way, since in the armrest assembly 100 according to one embodiment of the present disclosure, it is sufficient to interconnect the lifting button part 158 and the rotating lock part 154 using the lifting connection member 155 provided in the form of a wire, there is an advantage that the external design of the lifting button part 158 and the internal design in a narrow range of the lifting connection member 155 are very easy.
The height adjustable armrest assembly and the chair including the same according to one embodiment of the present disclosure have been described above in detail with reference to the accompanying drawings. However, it goes without saying that the embodiments of the present disclosure are not necessarily limited by the above-described embodiments, and various modifications and implementation within the equivalent scope are possible by those skilled in the art to which the present disclosure pertains. Therefore, the true scope of the present disclosure will be determined by the appended claims.
There are provided an armrest assembly and a chair including the same, which can prevent a user's injury by sliding a tilting arm pad part of the armrest assembly in a front-rear direction corresponding to a tilting angle of a backrest part so that an inclined angle is adjusted and designing a structure so that a safety cover part is interworked with only tilting movement when the tilting arm pad part tilts and slides.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2022-0041741 | Apr 2022 | KR | national |
This application is a Continuation Application of PCT International Application No. PCT/KR2023/004421 (filed on Apr. 3, 2023), which claims priority to Korean Patent Application No. 10-2022-0041741 (filed on Apr. 4, 2022), which are all hereby incorporated by reference in their entirety.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/KR2023/004421 | Apr 2023 | WO |
| Child | 18900932 | US |
