Keyboard tray support device and single arm keyboard tray

Abstract

This utility model provides a keyboard tray support device and a single-arm keyboard tray. The keyboard tray support device includes: a fixing component for fixing to the target structure on which the keyboard tray is placed; a track component, wherein an outer fixing rail has multiple first ball bearings abutting against a middle fixing rail along its own length, the middle fixing rail can slide relative to the outer fixing rail through the first ball bearings, and the middle fixing rail has a first fixing groove for limiting the middle fixing rail; an inner fixing rail has multiple second ball bearings abutting against a retainer along its own length, the inner fixing rail can slide relative to the retainer through the second ball bearings, and the inner fixing rail is used to connect to the keyboard tray; the retainer has a second fixing groove for limiting the inner fixing rail. By adopting the above technical solution, the keyboard tray support device can be pulled out more smoothly; at the same time, it solves the problem of track wobbling during the keyboard tray being pulled out and stored.

Description

Technical Field

[0001] This utility model relates to the technical field of single-arm keyboard trays, and more specifically, to a keyboard tray support device and a single-arm keyboard tray. Background Technology

[0002] In existing technologies, the sliding mechanism of a single-arm keyboard tray generally adopts an implementation scheme in which pulleys or sliders run on the keyboard sheet metal guide rail. This technical solution has the following main technical defects: First, the traditional bolt-to-sheet metal connection has a structural problem of excessive clearance, causing the keyboard tray to wobble significantly under load, seriously affecting the stability and user experience; Second, the existing structure has a functional contradiction in the design of the sliding mechanism. While a loose fit can ensure smooth sliding, it amplifies the aforementioned wobble problem. On the other hand, while reducing the clearance through a tight fit can improve structural stability, it can cause the pull-out operation to become stuck due to increased frictional resistance. This dilemma severely restricts the optimization space for product performance. Utility Model Content

[0003] The purpose of this invention is to provide a keyboard tray support device and a single-arm keyboard tray to solve the technical problem that the sliding mechanism of the existing single-arm keyboard tray is difficult to balance stability and smooth sliding.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] In a first aspect, a keyboard tray support device is provided, comprising:

[0006] A fixing component for securing the keyboard tray to the target structure.

[0007] The track assembly includes an outer fixed rail fixedly connected to the fixing component, an inner fixed rail disposed inside the outer fixed rail, an intermediate fixed rail disposed between the outer fixed rail and the inner fixed rail, and a retainer disposed between the inner fixed rail and the intermediate fixed rail. The outer fixed rail has a plurality of first balls abutting against the intermediate fixed rail along its own length direction. The intermediate fixed rail can slide relative to the outer fixed rail via the first balls. The outer fixed rail has a first fixing groove for limiting the intermediate fixed rail. The inner fixed rail has a plurality of second balls abutting against the retainer along its own length direction. The inner fixed rail can slide relative to the retainer via the second balls. The inner fixed rail is used to connect to a keyboard tray. The retainer has a second fixing groove for limiting the inner fixed rail.

[0008] By adopting the above technical solution, the outer fixed rail and the middle fixed rail slide relative to each other through the first ball bearing, and the retainer and the inner fixed rail slide relative to each other through the second ball bearing, making the keyboard tray support device slide out more smoothly; at the same time, the first fixed groove and the second fixed groove are provided to limit the middle fixed rail and the inner fixed rail, which greatly reduces the shaking in the pulling direction and solves the problem of track shaking during the keyboard tray being pulled out and stored.

[0009] In one embodiment, the intermediate fixed rail is provided with a plurality of first ball grooves along its own length direction, each first ball groove receiving a first ball, the first ball being able to be confined in the first ball groove and able to roll around its own center.

[0010] The inner fixed rail has a plurality of second ball grooves arranged sequentially along its own length. Each second ball groove contains a second ball, which can be confined in the second ball groove and can roll around its own center.

[0011] In one embodiment, the fixing assembly includes at least two fixing plates and an auxiliary fixing plate detachably disposed on the fixing plates. The at least two fixing plates are arranged at intervals along the extension and retraction direction of the keyboard tray, and the auxiliary fixing plate is detachably disposed on each fixing plate. The fixing plates are fixedly connected to the outer fixing rail, and the auxiliary fixing plates are erected on the fixing plates. When the auxiliary fixing plates are connected to the target structure on which the keyboard tray is disposed, the fixing plates are spaced at a predetermined distance from the target structure. In one embodiment, the keyboard tray support device further includes a rotation adjustment assembly, which includes a rotation fixing plate and a magnetic attractor disposed on the rotation fixing plate. The rotation fixing plate is fixedly connected to the inner fixing rail, and the magnetic attractor is magnetically attracted to the fixing plate when the rotation fixing plate moves close to one of the two fixing plates.

[0012] In one embodiment, the rotation adjustment assembly further includes a rotation plate connected to the rotation fixing plate, the rotation fixing plate having a deflection shaft, the rotation plate being used to connect to the keyboard tray and being able to rotate around the deflection shaft.

[0013] In one embodiment, the rotation adjustment assembly further includes a keyboard tray for connection with the keyboard tray and an adjustment plate for connecting the keyboard tray and the rotation plate. The adjustment plate has a pitch axis, and the keyboard tray is rotatably connected to the adjustment plate and is capable of rotating about the pitch axis.

[0014] In one embodiment, the rotation adjustment assembly further includes a swing arm connecting the keyboard tray and the rotating plate, a first pin connecting the keyboard tray, the adjustment plate, and the swing arm, a second pin connecting the adjustment plate and the rotating plate, and a third pin connecting the swing arm and the rotating plate. The pitch axis, the first pin, the second pin, and the third pin are arranged in parallel intervals. The adjustment plate is provided with a first arc-shaped groove, and the keyboard tray is provided with a second arc-shaped groove that partially overlaps with the first arc-shaped groove. The arc length directions of the first arc-shaped groove and the second arc-shaped groove are arranged with the pitch axis as the axis. The first pin passes through both the first arc-shaped groove and the second arc-shaped groove and can move simultaneously along the groove length directions of the first arc-shaped groove and the second arc-shaped groove.

[0015] In one embodiment, the first pin is further provided with a locking device for locking the first pin in the preset position, the locking device including a locking nut threadedly connected to the first pin; and / or, an elastic element is provided between the adjusting plate and the rotating plate, the two ends of the elastic element being connected to the adjusting plate and the adjusting plate respectively.

[0016] In one embodiment, a washer and a rotating bushing are fitted on the third pin. The washer is located between the rotating plate and the swing arm. The rotating bushing passes through the rotating plate. One end of the rotating bushing has a radial protrusion. The radial protrusion of the rotating bushing, the rotating plate, the washer, and the swing arm are stacked together when the third pin is locked.

[0017] Secondly, a single-arm keyboard tray is provided, including a keyboard tray and the aforementioned keyboard tray support device, wherein the keyboard tray is disposed on the rotation adjustment assembly.

[0018] By adopting the above technical solution:

[0019] First, a detachable auxiliary fixing plate has been added to accommodate situations where there are crossbeams or other foreign objects at the bottom of the user's table, thus increasing the applicable installation scenarios.

[0020] Secondly, the track assembly uses many ball bearings instead of pulleys and sliders, and point contact instead of surface contact, which reduces friction while ensuring that there is no excessive shaking. This makes the track assembly smoother and more stable, fundamentally solving the problems of excessive shaking and uneven pulling.

[0021] Secondly, a magnetic attachment is added so that the keyboard tray holds in place when pulled out or retracted, preventing it from sliding naturally.

[0022] Finally, adding a rotating bushing alters the clearance between the sheet metal and the pin, fundamentally reducing wobble. This results in greater overall stability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the keyboard tray support device and keyboard tray provided in the embodiment of this utility model.

[0025] Figure 2 This is a cross-sectional view of the keyboard tray support device provided in an embodiment of this utility model.

[0026] Figure 3 This is a three-dimensional structural diagram of the track assembly provided in an embodiment of this utility model.

[0027] Figure 4 This is an exploded view of the track assembly provided in an embodiment of this utility model.

[0028] Figure 5 This is a three-dimensional structural diagram of the fixing component provided in an embodiment of this utility model.

[0029] Figure 6 This is a three-dimensional structural diagram of the rotation adjustment component provided in one embodiment of the present utility model.

[0030] Figure 7 This is a three-dimensional structural diagram of the rotation adjustment component provided in an embodiment of the present invention.

[0031] Figure 8 yes Figure 2 Enlarged view of section "A" in the image.

[0032] The labels for the attached figures are as follows:

[0033] 100. Keyboard tray support device; 200. Keyboard tray;

[0034] 1. Fixing component; 2. Track component; 3. Rotation adjustment component;

[0035] 11. Fixed plate; 12. Auxiliary fixed plate; 21. Outer fixed rail; 22. Inner fixed rail; 23. Intermediate fixed rail; 24. Retainer; 25. First ball bearing; 26. Second ball bearing; 31. Rotating fixed plate; 32. Magnetic component; 33. Rotating plate; 34. Deflection shaft; 35. Keyboard tray; 36. Adjustment plate; 37. Pitch shaft; 38. Swing arm; 39. Locking device;

[0036] 211, First fixing groove; 241, Second fixing groove; 231, First ball groove; 221, Second ball groove;

[0037] 10. First pin; 20. Second pin; 30. Third pin; 361. First arc groove; 351. Second arc groove; 40. Elastic element; 50. Gasket; 60. Rotating bushing; 61. Radial protrusion;

[0038] 101. Lock the support tube. Detailed Implementation

[0039] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0040] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0041] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0043] like Figure 1 and Figure 2 As shown, the keyboard tray support device 100 provided in this embodiment of the present invention is used to support the keyboard tray 200. Users can place the keyboard on the keyboard tray 200, thereby achieving adjustable keyboard orientation and tilt angle. The keyboard tray support device 100 provided in this embodiment has the advantages of high smoothness of sliding and strong structural stability. The following is a detailed description of the specific implementation method:

[0044] Please refer to the following: Figure 3 and Figure 4 The keyboard tray support device 100 in this embodiment includes:

[0045] Fixing component 1 is used to fix it to the target structure on which the keyboard tray 200 is set;

[0046] The track assembly 2 includes an outer fixed rail 21 fixedly connected to the fixing assembly 1, an inner fixed rail 22 disposed inside the outer fixed rail 21, an intermediate fixed rail 23 disposed between the outer fixed rail 21 and the inner fixed rail 22, and a retainer 24 disposed between the inner fixed rail 22 and the intermediate fixed rail 23. The outer fixed rail 21 has a plurality of first balls 25 abutting against the intermediate fixed rail 23 along its own length direction. The intermediate fixed rail 23 can slide relative to the outer fixed rail 21 through the first balls 25. The outer fixed rail 21 has a first fixing groove 211 for limiting the intermediate fixed rail 23. The inner fixed rail 22 has a plurality of second balls 26 abutting against the retainer 24 along its own length direction. The inner fixed rail 22 can slide relative to the retainer 24 through the second balls 26. The inner fixed rail 22 is used to connect to the keyboard tray 200. The retainer 24 has a second fixing groove 241 for limiting the inner fixed rail 22.

[0047] Specifically, the fixing component 1 refers to the component used to fix the keyboard tray support device 100 to the target structure, which is a structure used to set up the keyboard, such as a wall or desktop in an office.

[0048] The track assembly 2 refers to the assembly used to realize the telescopic movement of the keyboard tray 200; the track assembly 2 includes an outer fixed rail 21, an inner fixed rail 22, an intermediate fixed rail 23, and a retainer 24;

[0049] The outer fixed rail 21 is located on the outer side. In this embodiment, there can be two rail components 2, which are arranged in parallel and spaced apart. The outer fixed rail 21 of each rail component 2 is located on the side away from the other rail component 2. The outer fixed rail 21 is fixedly connected to the fixed component 1. The outer fixed rail 21 is provided with a plurality of first balls 25 along its own rail length direction. The first balls 25 can be steel balls, which are used to realize rolling friction between the outer fixed rail 21 and the middle fixed rail 23.

[0050] The inner fixed rail 22 is located on the inner side and is located inside the outer fixed rail 21. The inner fixed rail 22 is used to connect with the keyboard tray 200. The inner fixed rail 22 has a plurality of second balls 26 along its own length direction. The second balls 26 can be steel balls and are used to realize rolling friction between the inner fixed rail 22 and the retainer 24.

[0051] The intermediate fixed rail 23 is located between the outer fixed rail 21 and the inner fixed rail 22. The intermediate fixed rail 23 is slidably connected to the outer fixed rail 21. A plurality of first balls 25 are provided between the intermediate fixed rail 23 and the outer fixed rail 21. The first balls 25 abut against the surfaces of the intermediate fixed rail 23 and the outer fixed rail 21 respectively, thereby realizing rolling friction between the intermediate fixed rail 23 and the outer fixed rail 21, thus realizing relative sliding between the two.

[0052] The retainer 24 is located between the inner fixed rail 22 and the intermediate fixed rail 23. The retainer 24 can be slidably connected to the intermediate fixed rail 23, thereby increasing the maximum extension length of the entire track assembly 2. The retainer 24 can also be fixedly connected to the intermediate fixed rail 23, thereby increasing the stability of the entire track assembly 2 at the maximum extension length. A second ball bearing 26 is provided between the retainer 24 and the inner fixed rail 22. The second ball bearing 26 abuts against the surface of the retainer 24 and the surface of the inner fixed rail 22 respectively, thereby realizing rolling friction between the retainer 24 and the inner fixed rail 22, thereby realizing relative sliding between the retainer 24 and the inner fixed rail 22.

[0053] It needs to be further explained that the outer fixed rail 21 is provided with a first fixed groove 211, which is used to limit the intermediate fixed rail 23 and prevent the intermediate fixed rail 23 from separating from the outer fixed rail 21. At the same time, the groove wall of the first fixed groove 211 guides the intermediate fixed rail 23 to move along its own rail length direction. Similarly, the retainer 24 is provided with a second fixed groove 241, which is used to limit the inner fixed rail 22 and prevent the retainer 24 from separating from the inner fixed rail 22. At the same time, the groove wall of the second fixed groove 241 guides the inner fixed rail 22 to move along its own rail length direction.

[0054] By adopting the above technical solution, the outer fixed rail 21 and the middle fixed rail 23 slide relative to each other through the first ball bearing 25, and the retainer 24 and the inner fixed rail 22 slide relative to each other through the second ball bearing 26, making the keyboard tray support device 100 slide out more smoothly; at the same time, the first fixed groove 211 and the second fixed groove 241 are provided to limit the middle fixed rail 23 and the inner fixed rail 22, which greatly reduces the wobbling in the pulling direction and solves the problem of track wobbling during the pulling out and storing of the keyboard tray 200.

[0055] In one embodiment, the intermediate fixed rail 23 is provided with a plurality of first ball grooves 231 arranged in sequence along its own rail length direction. Each first ball groove 231 contains a first ball 25. The first ball 25 can be confined in the first ball groove 231 and can roll around its own center.

[0056] The inner fixed rail 22 has a plurality of second ball grooves 221 arranged sequentially along its own length. Each second ball groove 221 contains a second ball 26. The second ball 26 can be confined in the second ball groove 221 and can roll around its own center.

[0057] Specifically, the intermediate fixed rail 23 is provided with a plurality of first ball grooves 231. The shape of the first ball groove 231 matches the shape of the first ball 25. The size of the first ball groove 231 is slightly smaller than the size of the first ball 25, so that the first ball 25 can be placed in the first ball groove 231 with a portion exposed. In this way, the first ball 25 can abut against the surface of the outer fixed rail 21. The first ball 25 is spherical in shape and can be confined in the first ball groove 231. The first ball 25 and the first ball groove 231 are in clearance fit, so that the first ball 25 can roll around its own center, thereby realizing the relative sliding of the outer fixed rail 21 and the intermediate fixed rail 23.

[0058] Similarly, the inner fixed rail 22 is provided with a plurality of second ball grooves 221. The shape of the second ball grooves 221 matches the shape of the second ball 26. The size of the second ball grooves 221 is slightly smaller than the size of the second ball 26, so that the second ball 26 can be placed in the second ball grooves 221 with a portion exposed. In this way, the second ball 26 can abut against the surface of the retainer 24. The second ball 26 is spherical in shape and can be confined in the second ball grooves 221. The second ball 26 and the second ball grooves 221 are in clearance fit, so that the second ball 26 can roll around its own center, thereby realizing the relative sliding of the retainer 24 and the inner fixed rail 22.

[0059] By adopting the above technical solution, the degree of fit between the outer fixed rail 21, the intermediate fixed rail 23, the retainer 24 and the inner fixed rail 22 is improved.

[0060] like Figure 5 As shown, in one embodiment, the fixing component 1 includes a fixing plate 11 and an auxiliary fixing plate 12 detachably disposed on the fixing plate 11. The fixing plate 11 is fixedly connected to the outer fixing rail 21, and the auxiliary fixing plate 12 is erected on the fixing plate 11. When the auxiliary fixing plate 12 is connected to the target structure on which the keyboard tray 200 is disposed, the fixing plate 11 is spaced at a preset distance from the target structure.

[0061] Specifically, to improve the applicability of the keyboard tray support device 100 installation position, the fixing component 1 includes a fixing plate 11 and an auxiliary fixing plate 12. In this embodiment, the fixing component 1 is used to fix it to the bottom of the desk. When there is a crossbeam (electric height-adjustable desk) or other obstacles at the bottom of the customer's desk, the auxiliary fixing plate 12 is added so that the fixing plate 11 can be installed around the obstacles, increasing the number of adaptable scenarios. If the bottom of the customer's desk is very flat, the auxiliary fixing plate 12 can be removed from the fixing plate 11, and the fixing plate 11 can be directly installed on the bottom of the desk.

[0062] By adopting the above technical solutions, the installation scenarios of the keyboard tray support device 100 are diversified.

[0063] In one embodiment, the fixing component 1 includes at least two fixing plates 11, which are arranged at intervals along the telescopic direction of the keyboard tray 200, and each fixing plate 11 is detachably provided with an auxiliary fixing plate 12.

[0064] By adopting the above technical solution, the stability of the fixing component 1 in the extension and retraction direction of the keyboard tray 200 is improved.

[0065] Please refer to the following: Figure 6 and Figure 7 As shown, in one embodiment, the keyboard tray support device 100 further includes a rotation adjustment component 3, which includes a rotation fixing plate 31 and a magnetic attractor 32 disposed on the rotation fixing plate 31; the rotation fixing plate 31 is fixedly connected to the inner fixing rail 22, and the magnetic attractor 32 is magnetically attracted to the fixing plate 11 when the rotation fixing plate 31 moves close to one of the two fixing plates 11.

[0066] Specifically, the rotation adjustment assembly 3 refers to the assembly used to adjust the rotation angle of the keyboard tray 200; the rotation adjustment assembly 3 includes a rotation fixing plate 31 and a magnetic attractor 32; the rotation fixing plate 31 connects the inner fixing rail 22 and the keyboard tray 200; the magnetic attractor 32 can be a magnet; the inner fixing rail 22 slides relative to the outer fixing rail 21, while the fixing plate 11 is fixedly mounted on the outer fixing rail 21, and the magnetic attractor 32 can be magnetically attracted to either of the two fixing plates 11. Thus, when the rotation fixing plate 31 moves with the inner fixing rail 22 to a position close to the two fixing plates 11, the magnetic attractor 32 can be magnetically attracted to either of the two fixing plates 11. When the keyboard tray 200 is in the extended and retracted position, the magnetic attractor 32 on the rotating fixed plate 31 is magnetically attracted to the adjacent fixed plate 11, so that the rotating fixed plate 31 is limited to the position close to the fixed plate 11. In this embodiment, the fixed plate 11 is a magnetic plate-shaped component, which includes but is not limited to a metal plate. In this embodiment, there are two fixed plates 11, and the two fixed plates 11 are arranged at intervals along the extension and retraction direction of the keyboard tray 200. In this way, the two fixed plates 11 correspond to the extended and retracted positions of the keyboard tray 200, so that the keyboard tray 200 can be limited to the extended and retracted positions.

[0067] By adopting the above technical solution, a magnetic suction element 32 is added to the rotating fixed plate 31, which can effectively prevent the keyboard tray 200 from automatically retracting after being pulled out, or from sliding out when retracting.

[0068] In one embodiment, the rotation adjustment assembly 3 further includes a rotation plate 33 connected to the rotation fixing plate 31. The rotation fixing plate 31 is provided with a deflection shaft 34. The rotation plate 33 is used to connect to the keyboard tray 200 and can rotate around the deflection shaft 34.

[0069] Specifically, the deflection shaft 34 refers to the shaft that allows the rotating plate 33 to rotate around the shaft; the rotating plate 33 is rotatably connected to the rotating fixed plate 31, the rotating fixed plate 31 is provided with the deflection shaft 34, the rotating plate 33 is connected to the deflection shaft 34 and can rotate around the deflection shaft 34.

[0070] By adopting the above technical solution, the keyboard tray 200 is deflected, which improves the rotation flexibility of the keyboard tray 200.

[0071] In one embodiment, the rotation adjustment assembly 3 further includes a keyboard tray 35 for connection with the keyboard tray 200 and an adjustment plate 36 for connecting the keyboard tray 35 and the rotation plate 33. The adjustment plate 36 is provided with a pitch axis 37. The keyboard tray 35 is rotatably connected to the adjustment plate 36 and can rotate about the pitch axis 37.

[0072] Specifically, the pitch axis 37 refers to the axis that allows the keyboard tray 35 to rotate around the axis; the keyboard tray 35 is rotatably connected to the adjustment plate 36, the adjustment plate 36 is provided with the pitch axis 37, the keyboard tray 35 is connected to the pitch axis 37 and can rotate around the pitch axis 37.

[0073] It needs to be further explained that the axis of the pitch axis 37 is perpendicular to the axis of the yaw axis 34.

[0074] By adopting the above technical solution, the tilt angle of the keyboard tray 200 can be adjusted, further improving the rotation flexibility of the keyboard tray 200.

[0075] In one embodiment, the rotation adjustment assembly 3 further includes a swing arm 38 connecting the keyboard tray 35 and the rotating plate 33, a first pin 10 connecting the keyboard tray 35, the adjustment plate 36 and the swing arm 38, a second pin 20 connecting the adjustment plate 36 and the rotating plate 33, and a third pin 30 connecting the swing arm 38 and the rotating plate 33. The pitch axis 37, the first pin 10, the second pin 20 and the third pin 30 are arranged in parallel intervals. The adjustment plate 36 is provided with a first arc-shaped groove 361, and the keyboard tray 35 is provided with a second arc-shaped groove 351 that partially overlaps with the first arc-shaped groove 361. The arc length direction of the first arc-shaped groove 361 and the second arc-shaped groove 351 is set with the pitch axis 37 as the axis. The first pin 10 passes through both the first arc-shaped groove 361 and the second arc-shaped groove 351 and can move along the groove length direction of both the first arc-shaped groove 361 and the second arc-shaped groove 351 at the same time.

[0076] By adopting the above technical solution, the adjustment plate 36, the swing arm 38 and the rotating plate 33 are connected in pairs to form a triangular structure, which improves the support and stability of the keyboard tray 35; the pitch axis 37, the first pin 10, the second pin 20 and the third pin 30 are arranged in parallel intervals, so that the keyboard tray 35 can be raised and lowered in parallel, and also has the ability to adjust pitch.

[0077] In one embodiment, the first pin 10 is further provided with a locking device 39 for locking the first pin 10 in a preset position. The locking device 39 includes a locking nut that is threadedly connected to the first pin 10.

[0078] Specifically, the locking nut is threaded to the first pin 10, and the two locking nuts are respectively connected to the first pin 10 and located at both ends of the first pin 10. The user can reduce the distance between the two locking nuts by rotating any one of the locking nuts to clamp the keyboard tray 35, the swing arm 38 and the adjustment plate 36, thereby making the keyboard tray 35 hover at the target angle.

[0079] By adopting the above technical solution, the keyboard tray 35° angle can be adjusted.

[0080] In one embodiment, an elastic element 40 is provided between the adjusting plate 36 and the rotating plate 33, and the two ends of the elastic element 40 are respectively connected to the adjusting plate 36 and the adjusting plate 36.

[0081] Optionally, the elastic element 40 can be a torsion spring or a tension spring. In this embodiment, a torsion spring is used as an example: the torsion spring has two supports, one of which is connected to the adjustment plate 36, and the other is connected to the rotating plate 33. The torsion spring always applies a preload to the adjustment plate 36 through the supports, reducing the natural collapse of the adjustment plate 36 due to the weight of the keyboard, and also reducing the possibility of shaking due to the weight of the keyboard. In addition, when the elastic element 40 is a tension spring, the elasticity of the tension spring always applies a preload to the adjustment plate 36, so that the adjustment plate 36 can remain stable.

[0082] Please refer to it again. Figure 2 In one embodiment, a washer 50 and a rotating bushing 60 are fitted on the third pin 30. The washer 50 is located between the rotating plate 33 and the swing arm 38. The rotating bushing 60 passes through the rotating plate 33. One end of the rotating bushing 60 is provided with a radial protrusion 61. The radial protrusion 61 extends away from the axis of the rotating bushing 60 along the radial direction of the rotating bushing 60. The rotating plate 33 is located between the radial protrusion 61 and the washer 50. The radial protrusion 61 of the rotating bushing 60, the rotating plate 33, the washer 50 and the swing arm 38 are stacked and connected when the third pin 30 is locked.

[0083] Specifically, the radial protrusion may be annular and concentrically arranged with the rotating bushing 60.

[0084] Specifically, when the third pin 30 is locked, the rotating bushing 60, rotating plate 33, washer 50, and rocker arm 38 are stacked together. Specifically, to reduce the large gap between the rocker arm 38 and rotating plate 33 due to machining errors, the third pin 30 is locked, causing the rotating bushing 60, rotating plate 33, washer 50, and rocker arm 38 to stack together and tightly connect under the locking force of the third pin 30. This increases the fit between the rotating plate 33 and rocker arm 38, reducing wobbling. Furthermore, the third pin 30 passes through the rocker arm 38 and rotating plate 33, and the rotating bushing 60 passes through the upper circular holes of the rotating plate 33 and rocker arm 38, ensuring that the upper circular holes of the rotating plate 33 and rocker arm 38 are concentric. The washer 50 is positioned between the rocker arm 38 and rotating plate 33, separating the two sheet metal parts while ensuring smooth rotation when the anti-slip nut is tightened.

[0085] By adopting the above technical solution, it is ensured that the gaps between the holes of these components and the bolts can rotate without excessive gaps, thus fundamentally reducing the wobbling gaps in the structure.

[0086] In one embodiment, the rotation adjustment component 3 includes a locking support tube 101 sleeved on the first pin 10, which ensures that the locking device 39 will not be locked too tightly, causing deformation of other components, and plays a protective and support role.

[0087] Secondly, a single-arm keyboard tray 200 is provided, including the keyboard tray 200 and the aforementioned keyboard tray support device 100, wherein the keyboard tray 200 is disposed on the rotation adjustment assembly 3.

[0088] By adopting the above technical solution:

[0089] First, a detachable auxiliary fixing plate 12 is added, which can be adapted to situations where there are crossbeams or other foreign objects at the bottom of the user's table, thus increasing the applicable installation scenarios.

[0090] Secondly, the track assembly 2 uses many ball bearings instead of pulleys and sliders, and point contact instead of surface contact, which reduces friction while ensuring that there is no excessive shaking. This makes the track assembly 2 smoother and more stable, fundamentally solving the problems of excessive shaking and uneven pulling.

[0091] Furthermore, a magnetic component 32 is added so that the keyboard tray 200 is held in place when pulled out or retracted, preventing the keyboard tray 200 from sliding naturally.

[0092] Finally, adding a 60° rotating bushing alters the clearance between the sheet metal and the pin, fundamentally reducing wobble. This results in greater overall stability.

[0093] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A keyboard tray support device, characterized in that, include: A fixing component for securing the keyboard tray to the target structure. The track assembly includes an outer fixed rail fixedly connected to the fixing component, an inner fixed rail disposed inside the outer fixed rail, an intermediate fixed rail disposed between the outer fixed rail and the inner fixed rail, and a retainer disposed between the inner fixed rail and the intermediate fixed rail. The outer fixed rail has a plurality of first balls abutting against the intermediate fixed rail along its own length direction. The intermediate fixed rail can slide relative to the outer fixed rail via the first balls. The outer fixed rail has a first fixing groove for limiting the intermediate fixed rail. The inner fixed rail has a plurality of second balls abutting against the retainer along its own length direction. The inner fixed rail can slide relative to the retainer via the second balls. The inner fixed rail is used to connect to a keyboard tray. The retainer has a second fixing groove for limiting the inner fixed rail.

2. The keyboard tray support device as described in claim 1, characterized in that, The intermediate fixed rail is provided with a plurality of first ball grooves arranged in sequence along its own length direction. Each first ball groove contains a first ball. The first ball can be confined in the first ball groove and can roll around its own center. The inner fixed rail has a plurality of second ball grooves arranged sequentially along its own length. Each second ball groove contains a second ball, which can be confined in the second ball groove and can roll around its own center.

3. The keyboard tray support device as described in claim 1, characterized in that, The fixing assembly includes at least two fixing plates and an auxiliary fixing plate detachably disposed on the fixing plates. The at least two fixing plates are arranged at intervals along the extension and retraction direction of the keyboard tray, and the auxiliary fixing plate is detachably disposed on each fixing plate. The fixing plates are fixedly connected to the outer fixing rail, and the auxiliary fixing plate is erected on the fixing plates. When the auxiliary fixing plate is connected to the target structure on which the keyboard tray is disposed, the fixing plate is spaced at a preset distance from the target structure.

4. The keyboard tray support device as described in claim 3, characterized in that, The keyboard tray support device further includes a rotation adjustment assembly, which includes a rotation fixing plate and a magnetic attractor disposed on the rotation fixing plate; the rotation fixing plate is fixedly connected to the inner fixing rail, and the magnetic attractor is magnetically attracted to the fixing plate when the rotation fixing plate moves close to one of the two fixing plates.

5. The keyboard tray support device as described in claim 4, characterized in that, The rotation adjustment assembly further includes a rotation plate connected to the rotation fixing plate. The rotation fixing plate is provided with a deflection shaft. The rotation plate is used to connect to the keyboard tray and can rotate around the deflection shaft.

6. The keyboard tray support device as described in claim 5, characterized in that, The rotation adjustment assembly further includes a keyboard tray for connection with the keyboard tray and an adjustment plate for connecting the keyboard tray and the rotation plate. The adjustment plate is provided with a pitch axis, and the keyboard tray is rotatably connected to the adjustment plate and can rotate around the pitch axis.

7. The keyboard tray support device as described in claim 6, characterized in that, The rotation adjustment assembly further includes a swing arm connecting the keyboard tray and the rotating plate, a first pin connecting the keyboard tray, the adjustment plate, and the swing arm, a second pin connecting the adjustment plate and the rotating plate, and a third pin connecting the swing arm and the rotating plate. The pitch axis, the first pin, the second pin, and the third pin are arranged in parallel intervals. The adjustment plate is provided with a first arc-shaped groove, and the keyboard tray is provided with a second arc-shaped groove that partially overlaps with the first arc-shaped groove. The arc length directions of the first arc-shaped groove and the second arc-shaped groove are arranged with the pitch axis as the axis. The first pin passes through both the first arc-shaped groove and the second arc-shaped groove and can move simultaneously along the groove length directions of the first arc-shaped groove and the second arc-shaped groove.

8. The keyboard tray support device as described in claim 7, characterized in that, The first pin is also provided with a locking device for locking the first pin in a preset position. The locking device includes a locking nut threadedly connected to the first pin, and / or... An elastic element is provided between the adjusting plate and the rotating plate, and the two ends of the elastic element are respectively connected to the adjusting plate and the adjusting plate.

9. The keyboard tray support device as described in claim 7, characterized in that, A washer and a rotating bushing are fitted on the third pin. The washer is located between the rotating plate and the swing arm. The rotating bushing passes through the rotating plate. One end of the rotating bushing has a radial protrusion. The radial protrusion of the rotating bushing, the rotating plate, the washer, and the swing arm are stacked together when the third pin is locked.

10. A single-arm keyboard tray, characterized in that, It includes a keyboard tray and a keyboard tray support device as described in any one of claims 1 to 9, wherein the keyboard tray is disposed on a rotation adjustment assembly.

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