This description relates generally to a latch system with a quick connector assembly.
Connecting rods in mechanical latch assemblies, such as aircraft stowage bins, often require separate fastening hardware to fasten the rods to one or more attachment points. This typically necessitates additional hardware, additional operational steps when installing the connecting rod, etc. By adding more hardware to the mechanical assembly the complexity of the installation procedure is increased, thereby decreasing installation efficiency and driving up installation costs.
Connecting rods, for example, may be connected to latch components via counter locking threaded nuts interfacing with mating threaded rods at the connected members, threaded screws interfacing with threaded holes in each one of the connected members, or cotter pins extending through holes in the connected members. The aforementioned types of connection mechanisms require fastener tooling during installation forcing installation personnel to carry specialized tools. Additionally, these separate components can fail, be misplaced, etc. Moreover, if the installation environment is tight, the components may be lost or misplaced. Component loss or misplacement in an aerospace environment may lead to aircraft damage. These lost components are referred to in the aerospace industry as foreign object debris (FOD).
To resolve at least some of the abovementioned problems a latch system is provided. The latch system includes a control rod, a control pin fixedly coupled to a first end of the control rod, and a quick connector assembly including a latch actuator connector coupled to a second end of the control rod, the latch actuator connector including a first flange fixedly attached to a shaft fixedly coupled to the control rod, a second flange slidably coupled to the control rod, a spring positioned between the first and second flanges, and a lock pin extending from the shaft, and a control rod connector including a connection slot mating with the lock pin when the latch actuator connector and the control rod connector are in an engaged configuration. The latch system enables the control rod connector and the latch actuator connector to be intuitively and efficiently attached. As a result, the installation efficiency of the latch system may be increased. It will be appreciated that the attachment between the control rod connector and the latch actuator connector may be performed without tools and/or without calibration, if desired. Consequently, the latch system may be quickly installed, thereby reducing installation costs. Moreover, the latch system may be installed in confined environments, thereby increasing the system's applicability. Additionally, the likelihood of unintentionally losing or misplacing components in the system is reduced due to the efficient installation procedure. Consequently, the amount of foreign object debris (FOD) in the installation environment (e.g., aircraft) may be reduced.
It should be understood that the summary above is provided to introduce in simplified form a selection of concepts that are further described in the detailed description. It is not meant to identify key or essential features of the claimed subject matter, the scope of which is defined uniquely by the claims that follow the detailed description. Furthermore, the claimed subject matter is not limited to implementations that solve any disadvantages noted above or in any part of this disclosure.
Many of the attendant features will be more readily appreciated and become better understood by reference to the following detailed description considered in connection with the accompanying drawings.
The present description will be better understood from the following detailed description read in light of the accompanying drawings, wherein:
A latch system with a quick connector assembly is described herein that allows for quick and efficient installation. The latch system design may also reduce the likelihood of lost or misplaced components during installation. The quick connector assembly may include a latch actuator connector designed to be releasably coupled to a control rod connector. The releasable coupling may take place through the mating between a lock pin in the latch actuator connector and a connection slot in the control rod connector. The connection slot includes an axially aligned portion and a radially aligned portion. During coupling between the latch actuator connector and the control rod connector the lock pin slides deeper into the axially aligned portion of the connection slot and then the lock pin is rotated to move the pin further into the radially aligned portion of the connection slot. In this way, the quick connector assembly may be efficiently connected, without the use of tools, if desired. The quick connector assembly may further include a spring-loaded flange with an extension designed to mate with the axially aligned portion of the connection slot when the quick connector assembly is in an engaged configuration. The extension provides another degree of connection assembly closure confidence. As a result, the likelihood of unwanted quick connector decoupling is reduced.
The examples below describe a latch system. Although the present examples are described and illustrated herein as being implemented in an aircraft and specifically an aircraft stowage bin, the system described is provided as an example and not a limitation. As those skilled in the art will appreciate, the present examples are suitable for application in a broad range of latch systems such as systems in the automotive industry, the construction industry, the maritime industry, etc.
Although the latch actuator 112 and the latch unit 114 are schematically depicted, it will be appreciated that the latch actuator and unit may have greater structural complexity that allows them to carry out the functions described herein. For instance, the latch actuator may include a handle designed to be rotationally actuated and/or the latch unit may include mechanical components designed to interact with the control pin to latch and unlatch the latch unit. Therefore, the latch unit 114 may be moved into a latched and an unlatched configuration. In the illustrated example, the latch system 100 is included in a stowage bin 116 in an aircraft 118. Therefore, the latch unit 114 may latch/unlatch the stowage bin 116 to allow/inhibit the user from accessing contents (e.g., baggage, equipment, etc.,) enclosed within an interior cavity of the stowage bin. However, as previously discussed the latch system 100 may be included in other operating environments including but not limited to land vehicles (e.g., cars, trucks, trains, etc.,), buildings, ships, or other environments where quick and efficient latch system installation/removal is desired.
In one example, axial movement of the control pin 104 may trigger engagement/disengagement with the latch unit 114 (e.g., remote latch unit). It will be appreciated that the latch actuator 112 may transfer the axial movement to the control pin 104 through the quick connector assembly 106 and the control rod 102. Axially latch unit actuation may allow for more robust and efficient actuation of the latch unit when compared to rotational unit actuation. However, in other examples, the control pin 104 and associated components may be designed to rotationally actuate the latch unit 114.
The control rod 102 has a cylindrical shape, in the illustrated example. However, other control rod shapes have been contemplated, such as rectangular, oval, or square cross-sectional profiles. The control rod shape may be selected based on the desired structural properties of the rod as well as the installation environment.
The quick connector assembly 106 includes a latch actuator connector 120 and a control rod connector 122. The latch actuator connector 120 is designed to attach to a latch actuator 112, in one example. The latch actuator 112 may include a handle or other suitable interface allowing for user actuation. The latch actuator 112 may, in one example, transform rotational actuation input into axial movement of the latch actuator connector. In this way, the latch actuator connector and therefore control rod may be moved in opposing axial directions responsive to actuation of the latch actuator. It will be appreciated that in other examples, the latch actuator 112 may be actuated via a non-rotational input. For instance, the latch actuator 112 may be slid inward and outward with regard to an actuator housing. In another example, the latch actuator 112 may exhibit both rotational and sliding movement during actuator.
The control pin 104 has a greater diameter than the control rod 102, in the depicted example. Additionally, the quick connector assembly 106 has a greater diameter than the control rod 102, in the illustrated example. Sizing the control rod, quick connector assembly, and the control pin in this manner may allow the latch system to be installed in tight environments with limited space. However, other relative sizes of the control rod, quick connector assembly, and/or the control pin have been contemplated. For instance, the control pin and/or the quick connector assembly may have a smaller diameter than the control rod.
The latch actuator connector 120 is shown including a shaft 602 and a lock pin 604 extending (e.g., radially extending) therefrom. In one example, the latch actuator connector 120 may include a second lock pin positioned on an opposing side of the shaft 602. An interior flange 606 is also shown radially extending from the shaft 602. The shaft 602 and the interior flange 606 form a component having a continuous contour, in the illustrated example. However, it will be appreciated that the interior flange 606 and the shaft 602 may be separate components attached (e.g., fixedly attached) to one another, in other examples. For instance, the shaft 602 and the interior flange 606 may be welded, adhesively bonded, press fit, etc., to one another.
The latch actuator connector 120 includes a slidable flange 608 slidably coupled with the shaft 602. Thus, the slidable flange 608 may have an inner diameter 610 that is larger than the outer diameter 612 of the shaft 602. It will be appreciated that the variance in diameters may be selected to allow the slidable flange 608 to slide along the shaft 602 with limited misalignment between the interior surface of the slidable flange 608 and the exterior surface of the shaft 602. It will be appreciated that misalignment may be characterized by the interior and exterior surface falling out of a parallel arrangement. In one example, it will be appreciated that the variance in diameters may be 1.0 mm, 0.1 mm, or 0.001 mm, for example. It will also be appreciated that the interior flange 606 may be referred to as a first flange and the slidable flange 608 may be referred to as a second flange.
The latch actuator connector 120 also includes the spring 300 positioned between (e.g., axially between) the interior flange 606 and the slidable flange 608. The spring 300 is depicted as a coil spring in
The slidable flange 608 has a greater outer diameter than the outer diameter of the interior flange 606. In this way, the slidable flange 608 may be easily actuated by installation personnel. However, in other examples, the flanges may have equivalent diameters or the slidable flange may have a smaller outer diameter than the outer diameter of the interior flange. The slidable flange 608 may also be contour to be easily gripped, in some examples. For instance, the slidable flange 608 may have indents, a textured surface, etc., to allow the flange to be easily manipulated by a user's hands.
The latch actuator connector 120 includes a rod opening 614 mated with the second end 110 of the control rod 102. The latch actuator connector 120 includes pin openings 616 having pins 618 extending there through. The pins 618 may therefore mate with the pin openings 616 in the shaft 602. In this way, the latch actuator connector 120 may be coupled to the control rod 102. However, other suitable connection techniques may be used such as welding, press fitting, clamping, etc.
The axially aligned section 802 includes a first side 814 and a second side 816. In the illustrated example, the first side 814 is parallel to the second side 816. In this way, the axially aligned section 802 may have a substantially constant width at least partially along its length. However, other contours of the axially aligned section have been contemplated. For example, the axially aligned section 802 may taper inward toward the central axis and/or may taper in a direction extending away from latch actuator connector 120.
The radially aligned section 804 also includes a first wall 818 and a second wall 820. Again, the first and second walls, 818 and 820, respectively, are parallel to one another, in the illustrated example. However, in other examples, the first wall 818 and the second wall 820 may not be parallel. For instance, the walls may taper in a direction extending inward toward the central axis and or taper in a circumferential direction. The radially aligned section 804 also includes an end wall 822. The end wall 822 may be curved such that is mates with the lock pin 604. However, other end wall contours may be used, in other examples, such as flat contours.
The latch actuator connector 120 includes the lock pin 604 that radially extends from the shaft 602. The lock pin 604 has a cylindrical shape, in the depicted example. However, it will be appreciated that other lock pin contours have been contemplated such as shapes with a rounded (e.g., semi-spherical) end.
The latch actuator connector 120 also includes an extension 824 extending (e.g., axially extending) from the interior flange 606. Additionally, the spring 300 is coupled to the slidable flange 608 and interior flange 606. Thus, the spring 300 is positioned axially between the slidable flange 608 and the interior flange 606. The interior flange 606 may be fixedly coupled to the shaft 602 while the slidable flange 608 may be designed to move in opposing axial directions with regard to the shaft 602, as previously discussed. In
The extension 824 includes two axially aligned sides 826 and a radially aligned side 828. The axially aligned sides may be in face sharing contact with the walls of the axially aligned section 802 of the connection slot 800 when the extension is mated therein. However, in other examples, there may be a slight gap between the axially aligned sides 826 of the extension 824 and the axially aligned section 802. Additionally, the radially aligned side 828 may be curved to allow for smooth mating with the connection slot 800. However, in other examples, the radially aligned side 828 may have a planar profile.
The extension 824 is shown offset (e.g. circumferentially offset) from the lock pin 604 extending (e.g., radially extending) from the shaft 602. Arranging the extension 824 and the lock pin 604 in this manner allows the extension to mate with the connection slot 800 when the lock pin 604 is rotated into the radially aligned section 804 of the connection slot 800.
Additionally, in
It will be appreciated that during an engagement sequence the lock pin 604 may be first axially moved through the connection slot 800 and then rotated to place the lock pin 604 in contact or near contact with the end wall 822 to place the quick connector assembly 106 in an engaged configuration. Additionally, the extension 824 may be mated with the axially aligned section 802 of the connection slot 800 when the quick connector assembly is in the engaged configuration. To disengage the quick connector assembly 106 it will be appreciated that the aforementioned sequence may be reversed. For example, the slidable flange 608 may be slid toward the interior flange 606 such that the spring is compressed and the extension is unmated from the axially aligned section of the connection slot 800. Subsequent to decoupling of the extension from the connection slot, the lock pin 604 may be rotated such that is travels through the radially aligned section of the connection slot and then is subsequently axially moved through the axially aligned slot.
It will be appreciated that
The invention will further be described in the following paragraphs. In one aspect, a latch system is provided that includes a control rod, a control pin fixedly coupled to a first end of the control rod, and a quick connector assembly including, a latch actuator connector coupled to a second end of the control rod, the latch actuator connector including a first flange fixedly attached to a shaft fixedly coupled to the control rod, a second flange slidably coupled to the control rod, a spring positioned between the first and second flanges, and a lock pin extending from the shaft, and a control rod connector including a connection slot mating with the lock pin when the latch actuator connector and the control rod connector are in an engaged configuration.
In another aspect, a latch system is provided that includes a control rod, a control pin fixedly coupled to a first end of the control rod, and a quick connector assembly including, a latch actuator connector coupled to a second end of the control rod, the latch actuator connector including a first flange fixedly attached to a shaft fixedly coupled to the control rod, a second flange slidably coupled to the control rod, a spring positioned between the first and second flanges, and a lock pin extending from the shaft, and a control rod connector including a connection slot including an axially aligned section and a radially aligned section mating with the lock pin when the latch actuator connector and the control rod connector are in an engaged configuration.
In another aspect, a latch system in an aircraft stowage bin, the latch system including a control rod, a control pin fixedly coupled to a first end of the control rod, a quick connector assembly including a latch actuator connector coupled to a second end of the control rod, the latch actuator connector including a first flange fixedly attached to a shaft fixedly coupled to the control rod, a second flange slidably coupled to the control rod, a spring positioned between the first and second flanges, and a lock pin extending from the shaft, and a control rod connector including a connection slot mating with the lock pin when the latch actuator connector and the control rod connector are in an engaged configuration, a latch unit receiving an axial input from the control pin, and a latch actuator coupled to a housing of the aircraft stowage bin and to the control rod connector and axially actuating the control rod connector.
In any of the aspects or combinations of the aspects, the connection slot may include an axially aligned section and a radially aligned section.
In any of the aspects or combinations of the aspects, the axially aligned section may extend to an end of the control rod connector.
In any of the aspects or combinations of the aspects, when the control rod connector is transitioned from an unengaged configuration to the engaged configuration the lock pin may travel through the axially aligned section and into the radially aligned section.
In any of the aspects or combinations of the aspects, the latch system may further include an extension axially extending from the second flange and mating with the connection slot when the latch actuator connector and the control rod connector are in the engaged configuration.
In any of the aspects or combinations of the aspects, the extension may be radially offset from the lock pin.
In any of the aspects or combinations of the aspects, the latch system may further include a latch actuator coupled to the control rod connector and axially actuating the control rod connector.
In any of the aspects or combinations of the aspects, in the engaged configuration the spring may be in a neutral position.
In any of the aspects or combinations of the aspects, the spring may circumferentially surround the shaft.
In any of the aspects or combinations of the aspects, when the control rod connector is transitioned from an unengaged configuration to the engaged configuration the lock pin may travel through the axially aligned section and into the radially aligned section.
In any of the aspects or combinations of the aspects, the latch system may further include a latch unit receiving an axial input from the control pin and a latch actuator coupled to the control rod connector and axially actuating the control rod connector.
In any of the aspects or combinations of the aspects, in the engaged configuration the spring may be in a neutral position and when the lock pin is positioned within the axially aligned section the spring is compressed.
In any of the aspects or combinations of the aspects, the latch system may further include an extension axially extending from the second flange and mating with the connection slot when the latch actuator connector and the control rod connector are in the engaged configuration and where the extension is radially offset from the lock pin.
In any of the aspects or combinations of the aspects, the spring may circumferentially surround the shaft.
In any of the aspects or combinations of the aspects, when the control rod connector is transitioned from an unengaged configuration to the engaged configuration the lock pin may travel through the axially aligned section and into the radially aligned section.
In any of the aspects or combinations of the aspects, in the engaged configuration the spring may be in a neutral position and when the lock pin is positioned within the axially aligned section the spring is compressed.
In any of the aspects or combinations of the aspects, the latch system may further include an extension axially extending from the second flange and mating with the connection slot when the latch actuator connector and the control rod connector are in the engaged configuration and where the extension is radially offset from the lock pin.
Note that the example control and estimation routines included herein can be used with various latch system configurations. The control methods and routines disclosed herein may be stored as executable instructions in non-transitory memory and may be carried out by tooling apparatuses.
The specific routines described herein may represent one or more of any number of processing strategies such as event-driven, interrupt-driven, multi-tasking, multi-threading, and the like. As such, various actions, operations, and/or functions illustrated may be performed in the sequence illustrated, in parallel, or in some cases omitted. Likewise, the order of processing is not necessarily required to achieve the features and advantages of the example embodiments described herein, but is provided for ease of illustration and description. One or more of the illustrated actions, operations and/or functions may be repeatedly performed depending on the particular strategy being used. Further, the described actions, operations and/or functions may graphically represent code to be programmed into non-transitory memory of the computer readable storage medium in the latch system, where the described actions are carried out by executing the instructions in a tooling apparatus and latch system including the various components.
It will be appreciated that the configurations and routines disclosed herein are exemplary in nature, and that these specific embodiments are not to be considered in a limiting sense, because numerous variations are possible. For example, the above technology can be applied to a broad range of manufacturing fields such as the aerospace industry, the construction industry, the maritime industry, etc. The subject matter of the present disclosure includes all novel and non-obvious combinations and sub-combinations of the various systems and configurations, and other features, functions, and/or properties disclosed herein.
The detailed description provided herein in connection with the appended drawings is intended as a description of the present examples and is not intended to represent the only forms in which the present example may be constructed or utilized. The description sets forth the functions of the example and the sequence of steps for constructing and operating the example. However, the same or equivalent functions and sequences may be accomplished by different examples.
The following claims particularly point out certain combinations and sub-combinations regarded as novel and non-obvious. These claims may refer to “an” element or “a first” element or the equivalent thereof. Such claims should be understood to include incorporation of one or more such elements, neither requiring nor excluding two or more such elements. Other combinations and sub-combinations of the disclosed features, functions, elements, and/or properties may be claimed through amendment of the present claims or through presentation of new claims in this or a related application. Such claims, whether broader, narrower, equal, or different in scope to the original claims, also are regarded as included within the subject matter of the present disclosure.
Those skilled in the art will realize that the process sequences described above may be equivalently performed in any order to achieve a desired result. Also, sub-processes may typically be omitted as desired without taking away from the overall functionality of the processes described above.
The present application claims priority to U.S. Provisional Application No. 62/504,509, entitled “Quick Lock Connector”, and filed on May 10, 2017. The entire contents of the above-listed application are hereby incorporated by reference for all purposes.
Number | Date | Country | |
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62504509 | May 2017 | US |