Keyboard wrist rest height adjustment device

Abstract

This invention discloses a keyboard wrist rest height adjustment device, relating to the field of keyboard rest technology. It includes: a housing, the housing having an L-shaped structure, a plate on the top of the housing, and an airbag fixed to the top of the plate; multiple first air outlets, equidistantly located on one side wall of the housing; multiple second air outlets, equidistantly located at the bottom of the housing; multiple air inlets, located on the side walls of the housing; and an air supply assembly disposed inside the housing near the air inlets. This invention allows adjustment of the airbag's inflation level by adjusting the operation of the adjustment assembly and the inflation assembly, thereby adjusting the wrist rest height through the airbag. By adjusting the operation of the adjustment assembly, the airflow of the first and second air outlets is changed, thus altering the heating effect on the hands and legs, ensuring the practicality of the device.

Description

Technical Field

[0001] This invention relates to the field of keyboard tray technology, and in particular to a keyboard wrist rest height adjustment device. Background Technology

[0002] A keyboard is a device used to input instructions into a computer. In daily life, when working on a keyboard on a desk or wall, the height of the keyboard itself causes the user's wrists to be suspended in the air. Maintaining this position for a long time not only affects the comfort of work, but also easily leads to wrist pain, and in severe cases, it can even cause disease.

[0003] In winter, when using a computer, the traditional desk wall lacks an effective heating method, resulting in users being in a relatively cold environment after prolonged use. In particular, the user's legs will also become cold due to reduced activity, further reducing the comfort of using the keyboard in cold seasons.

[0004] Therefore, there is an urgent need to design a keyboard wrist rest height adjustment device with a heating function. Summary of the Invention

[0005] Based on the above-mentioned technical problems, the present invention aims to provide a keyboard wrist rest height adjustment device with heating function, so as to improve the user's comfort when using the keyboard and meet the heating needs in cold environments.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A keyboard wrist rest height adjustment device includes: a device body composed of a plate and a housing, wherein an airbag is fixed to the top of the plate; multiple first air outlets are provided on the side wall of the plate away from the housing; multiple air inlets and second air outlets are provided on the side wall and bottom wall of the housing, respectively; the housing is provided with an air supply component, an adjustment component, and an inflation component; the air supply component is used to draw in external air from the air inlets, heat it, and then discharge it from the first and second air outlets; the adjustment component is used to adjust the air volume of the first and second air outlets; the inflation component is driven to cooperate with the adjustment component to inflate the airbag.

[0008] Furthermore, the air supply assembly includes: a heating base fixed inside the housing, the heating base forming a cavity with the housing that simultaneously communicates with a first air outlet and a second air outlet; the side wall of the heating base away from the cavity is an open end, the open end facing the air inlet, and multiple through holes are provided on the side wall of the heating base opposite the open end; a fixed mounting frame is fixed inside the heating base, a heating wire is fixed inside the mounting frame, and multiple fans are also fixedly installed inside the heating base;

[0009] Furthermore, the adjustment assembly includes: a support rod fixedly disposed between the upper and lower inner walls of the housing containing the cavity, the axis of the support rod being parallel to the side wall of the heating seat where the through hole is located; a guide seat slidably disposed on the support rod, one side wall of the guide seat abutting against the side wall of the heating seat where the through hole is located, and the remaining side wall of the guide seat abutting against the inner wall of the housing corresponding to the cavity; and further includes: a power assembly fixedly disposed on the inner wall located at the top of the housing within the cavity, the power assembly being used to drive the guide seat to move up and down along the support rod;

[0010] Furthermore, the cross-section of the guide seat is trapezoidal;

[0011] Furthermore, the opening of the through hole extends along the axial direction of the support rod on the side wall of the heating seat;

[0012] Furthermore, the power assembly includes: a rack slidably disposed on the inner wall of the top of the housing, the rack having an internal threaded hole; a motor fixed to the inner wall of the top of the housing; a third lead screw connected by a thread and an internal threaded hole, and the third lead screw being fixedly connected to the output shaft of the motor; a gear rotatably disposed on the inner wall of the top of the housing; and a second lead screw fixed to the bottom of the gear, the guide seat having a second threaded hole at its top, the second lead screw passing through the second threaded hole and threadedly engaging with the second threaded hole.

[0013] Furthermore, the inflation assembly includes: a sleeve fixed to the inner wall of the top of the housing; a piston slidably disposed within the sleeve; a second spring, one end of which is fixed to the piston, and the other end of which is fixed to the inner wall of the sleeve; a rod fixed to the side wall of the piston, with a clutch assembly at the end of the rod; a solenoid valve fixed through the side wall of the sleeve; and an air supply pipe, one end of which is connected to the solenoid valve, and the other end of which is connected to the airbag.

[0014] Furthermore, the clutch assembly includes: a connecting block fixed to the end of the sleeve rod; a seat fixed to the top of the connecting block, and the seat and the inner wall of the top of the housing are slidably connected; a stop block slidably disposed in the seat; an electromagnet fixed in the seat; and a first spring, one end of the first spring fixed to the electromagnet and the other end of the first spring fixed to the stop block.

[0015] Furthermore, it also includes: two connecting plates, both of which are fixed to the side wall of the box, and each of the two connecting plates has a first threaded hole on its top, and a first lead screw is threaded into each of the two first threaded holes; two mounting plates, which are rotatably mounted on the top of the two first lead screws; and two rubber plates, which are fixed to the top of the two mounting plates.

[0016] Furthermore, the opening directions of the first air outlet and the air inlet are the same.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] This invention, through the setting of an adjustment component, an air supply component, a first air outlet, and a second air outlet, can adjust the expansion degree of the airbag by working with the adjustment component and the inflation component, thereby adjusting the height of the wrist support through the airbag. By working with the adjustment component, the air volume of the first air outlet and the second air outlet is changed, thereby changing the heating effect on the hands and legs, ensuring the practicality of this device. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the air inlet, the first air outlet, and the second air outlet of the present invention.

[0022] Figure 3 This is a schematic cross-sectional view of the housing structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the exploded structure of the third lead screw and rack of the present invention;

[0024] Figure 5 This is a schematic cross-sectional view of the sleeve structure of the present invention;

[0025] Figure 6 This is a cross-sectional structural schematic diagram of the heating seat of the present invention.

[0026] Figure label:

[0027] 1. Housing; 2. Plate; 3. Airbag; 4. First air outlet; 5. Connecting plate; 6. Mounting plate; 7. First lead screw; 8. Rubber plate; 9. Air inlet; 10. Second air outlet; 11. Guide seat; 12. Support rod; 13. Second lead screw; 14. Gear; 15. Rack; 16. Sleeve; 17. Heating seat; 18. Air supply pipe; 19. Third lead screw; 20. Motor; 21. Internal threaded hole; 22. Piston; 23. Sleeve rod; 24. Connecting block; 25. Seat; 26. Electromagnet; 27. First spring; 28. Stop block; 29. ​​Solenoid valve; 30. Second spring; 31. Fan; 32. Mounting frame; 33. Heating wire; 34. Through hole. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0029] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0030] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Inferior wall bonding Figures 1 to 6As shown, an embodiment of the present invention provides a keyboard wrist rest height adjustment device, comprising:

[0034] The device body has a top wall that is a plate 2 for placing keyboards and other table / wall items. An airbag 3 is fixed to the top wall of the plate 2. The airbag 3 is used to support the user's wrists when the user uses the keyboard on the plate 2.

[0035] Located at one end of the plate 2 is the box 1. In this embodiment, the top wall of the box 1 and the top wall of the plate 2 are set together. The bottom wall of the box 1 protrudes from the bottom wall of the plate 2. That is, the device body composed of the plate 2 and the box 1 has an L-shaped cross-section.

[0036] In this embodiment, the device body can be a tabletop or a detachable pad on the tabletop. When used as a pad, two clamping blocks are provided at the bottom of the device body, i.e., on the bottom wall of the plate 2. The device body placed on the tabletop is fixed to the tabletop by adjusting the clamping blocks.

[0037] Furthermore, in this embodiment, the clamping block includes:

[0038] Two connecting plates 5 are located below the plate body 2. Both connecting plates 5 are fixed on the side wall of the box body 1. The top of each connecting plate 5 is provided with a first threaded hole, and a first lead screw 7 is threaded into each of the two first threaded holes.

[0039] Two mounting plates 6 are respectively rotatably mounted on the top of the two first lead screws 7;

[0040] Two rubber plates 8 are fixed to the top of two mounting plates 6 respectively;

[0041] The specific method of using the clamping block is as follows: During installation, the end of the box 1 protruding from the plate 2 is clamped onto one end of the table, and the table is placed between the connecting plate 5 and the plate 2. Then, by rotating the first screw 7 in the first threaded hole of the connecting plate 5, the mounting plate 6 and the rubber plate 8 are driven to rise until the rubber plate 8 and the bottom wall of the table are in close contact, so as to realize the installation of this device.

[0042] Multiple first air outlets 4 are equidistantly located on the side wall of the plate 2 away from the box 1. In this embodiment, the first air outlets 4 are positioned facing the user.

[0043] Multiple second air outlets 10 are equidistantly located on the bottom wall of the housing 1. In this embodiment, the second air outlets 10 are positioned directly opposite the user's legs.

[0044] Multiple air inlets 9 are provided on one of the side walls of the housing 1. In this embodiment, the air inlets 9 are provided on the side wall of the housing 1 that protrudes from the bottom of the plate 2, and their opening direction is parallel to the first air outlet 4.

[0045] An air supply component is installed inside the housing 1 near the air inlet 9; it is used to draw outside air into the housing 1 from the air inlet 9 and heat the air, and then discharge it from the first air outlet 4 and the second air outlet 10 respectively to provide warmth for the user.

[0046] An adjustment component is fixed inside the housing 1. The adjustment component and the air supply component are in contact. The adjustment component is used to adjust the air volume of the first air outlet 4 and the second air outlet 10.

[0047] An inflation component is fixed inside the housing 1. The inflation component and the adjustment component form a transmission connection. The inflation component is used to inflate the airbag 3 to adjust the height of the airbag 3.

[0048] By adjusting the coordination of the adjustment component and the inflation component, the degree of inflation of the airbag 3 is adjusted to achieve the height adjustment of the wrist support.

[0049] By adjusting the operation of the components, the air volume of the first air outlet 4 and the second air outlet 10 can be adjusted to change the heating effect on the hands and legs. In this way, users can freely adjust the heating effect according to the actual situation during use.

[0050] Furthermore, the air supply components include:

[0051] Heating base 17 is fixed inside the housing 1 and forms a cavity between the heating base 1 and the housing 1 that is simultaneously connected to the first air outlet 4 and the second air outlet 10.

[0052] The heating base 17 is matched with the shape and structure of the housing 1, and one end of the heating base 17 is provided with an opening, and the opening end of the heating base 17 is set towards the air inlet 9.

[0053] Multiple fans 31 are fixed at equal intervals on the inner wall of the heating base 17, and the multiple fans 31 are located near the air inlet 9;

[0054] Multiple through holes 34 are equally spaced on the side wall of the heating seat 17, and the internal space of the heating seat 17 is connected to the cavity. The opening of the through holes 34 extends along the side wall of the heating seat 17.

[0055] Mounting frame 32 is fixed in the middle of the inner wall of heating base 17, and heating wire 33 is fixed inside the mounting frame 32.

[0056] Specifically, in this embodiment, when the fan 31 is working, it draws outside air into the heating base 17 through the air inlet 9 and the opening of the heating base 17, and then outputs it through the through hole 34 after being heated by the heating wire 33.

[0057] Furthermore, the adjustment assembly is disposed within the cavity and includes:

[0058] Two support rods 12 are fixedly installed between the upper and lower inner walls of the housing 1 containing the cavity, and the axis of the support rods 12 is parallel to the side wall of the heating seat 17 where the through hole 34 is located.

[0059] Guide seat 11, guide seat 11 and two support rods 12 are slidably connected, one side wall of guide seat 11 abuts against the side wall of heating seat 17 where through hole 34 is located, and the remaining side wall abuts against the inner wall of box 1 that forms the cavity.

[0060] The guide seat 11 divides the cavity formed by the side wall of the heating seat 17 where the through hole 34 is located and the inner wall of the box 1 into two sub-cavities. One sub-cavity is only connected to the first air outlet 4, and the other sub-cavity is only connected to the second air outlet 10. Since the guide seat 11 can slide along the opening direction of the through hole 34, when the guide seat 11 slides on the support rod 12, it can adjust the opening size of the through hole 34 in each sub-cavity accordingly, thereby adjusting the air volume of the first air outlet 4 and the second air outlet 10.

[0061] In this embodiment, the cross-section of the guide seat 11 is trapezoidal. One bottom edge of the guide seat 11 with the trapezoidal cross-section abuts against the side wall of the heating seat 17 where the through hole 34 is located; the other bottom edge abuts against the inner wall of the box 1 corresponding to the through hole 34.

[0062] The power assembly is fixedly installed in the cavity and is used to drive the guide seat 11 to move up and down along the support rod 12;

[0063] Furthermore, the powertrain components include:

[0064] The rack 15 is slidably disposed on the inner wall of the top of the housing 1 where the cavity is located. The rack 15 has an internal threaded hole 21 coaxial with the rack 15, and a third lead screw 19 that is threadedly driven in the internal threaded hole 21.

[0065] Motor 20 is fixed on the top inner wall of housing 1, and the output shaft of motor 20 is fixedly connected to the third lead screw 19;

[0066] The second lead screw 13 has a second threaded hole on the guide seat 11. The second lead screw 13 passes through the second threaded hole and is threaded into the second threaded hole. The axis of the second lead screw 13 is parallel to the support rod 12. One end of the second lead screw 13 is rotatably fixed on the bottom wall of the housing 1. The other end of the second lead screw 13 is fixedly connected to the gear 14. The gear 14 meshes with the rack 15.

[0067] Specifically, in this embodiment, the motor 20 located in the cavity and fixedly installed drives the third lead screw 19 to rotate, thereby driving the rack 15 to move. The moving rack 15 drives the gear 14 meshing with it to rotate, thereby realizing the independent rotation of the second lead screw 13, which, in conjunction with the second threaded hole, realizes the height adjustment of the guide seat 11.

[0068] The higher the guide seat 11 is, the less gas is output through the first air outlet 4, resulting in a poorer heating effect on the user's front wall, such as their hands. However, the second air outlet 10 outputs more gas, increasing the heating effect on the legs. Conversely, the lower the guide seat 11 is, the better the heating effect on the hands and the worse the heating effect on the legs. Therefore, users can adjust it at will according to the actual situation, which improves the practicality of the device.

[0069] Furthermore, the inflation assembly is also disposed within the cavity of the housing 1, and includes:

[0070] Sleeve 16 is fixed to the inner wall at the top of the box 1 where the cavity is located;

[0071] Piston 22 is slidably disposed within sleeve 16;

[0072] The second spring 30 has one end fixed to the piston 22 and the other end fixed to the wall of the sleeve 16.

[0073] Sleeve rod 23, one end of which is fixed to the side wall of piston 22, and the other end of which can slide through sleeve 16 and is fixedly connected to clutch assembly;

[0074] Air supply pipe 18, one end of which is connected to sleeve 16, and the other end of which is connected to airbag 3.

[0075] Solenoid valve 29 is installed inside the air supply pipe 18;

[0076] Furthermore, the inflation assembly also includes a clutch assembly, which includes:

[0077] Connecting block 24, which is fixed to the end of sleeve rod 23;

[0078] The base 25 is fixed to the top of the connecting block 24, and the base 25 is slidably connected to the inner wall of the box 1.

[0079] Stop 28, which is slidably disposed within the base 25;

[0080] Electromagnet 26 is fixed inside the base 25;

[0081] The first spring 27 has one end fixed to the electromagnet 26 and the other end fixed to the stop block 28.

[0082] Disconnect the switch of electromagnet 26. Under the action of the first spring 27, push the stop block 28 to slide out of the seat 25. Turn on the switch of motor 20. When motor 20 is working, drive the third lead screw 19 to rotate. Cooperate with the threaded groove 21 to realize the movement of rack 15. During the movement of rack 15, it abuts against the stop block 28 and pushes the stop block 28 to move. Then, through the seat 25 and connecting block 24, drive sleeve rod 23 to push piston 22 to move. Inject the gas in sleeve 16 into airbag 3 through solenoid valve 29 and air supply pipe 18 to inflate airbag 3 and adjust the height of airbag 3. When the height of airbag 3 is adjusted appropriately, close the switch of solenoid valve 29 to maintain the height of airbag 3.

[0083] When the height of airbag 3 needs to be adjusted:

[0084] First, disconnect the switch of electromagnet 26. Under the action of the first spring 27, push the stop block 28 to slide out of the seat 25 and turn on the switch of motor 20. Then, motor 20 drives the third lead screw 19 to rotate, which, in conjunction with the threaded groove 21, realizes the movement of rack 15. During the movement of rack 15, it abuts against the stop block 28 and pushes the stop block 28 to move. Then, through the seat 25 and connecting block 24, it drives sleeve rod 23 to push piston 22 to move, injecting gas in sleeve 16 into airbag 3 through solenoid valve 29 and air supply pipe 18 to inflate airbag 3 and adjust the height of airbag 3. When the height of airbag 3 is adjusted appropriately, close the switch of solenoid valve 29 to maintain the height of airbag 3.

[0085] When the weather is cold, first turn on the switches of heating wire 33 and fan 31. When fan 31 is working, it draws outside air into heating base 17 through air inlet 9. After being heated by heating wire 33, the air is output through through hole 34. Under the action of guide seat 11, the air output through through hole 34 is divided into two streams. One stream is output through first air outlet 4 and blows towards the user's palm to warm the user's hands. The other stream is output through second air outlet 10 to heat the user's legs, so that the user can use the computer and keyboard comfortably in cold weather.

[0086] When it is necessary to adjust the air volume of the first air outlet 4 and the second air outlet 10, it is necessary to ensure that the switch of the electromagnet 26 is turned on. When the electromagnet 26 works, it will attract the stop block 28 into the seat 25. After that, the rack 15 will not move against the stop block 28, but will only drive the gear 14 to rotate, thereby realizing the independent rotation of the second lead screw 13. In conjunction with the second threaded hole, the height adjustment of the guide seat 11 can be realized.

[0087] The higher the guide seat 11 is, the less gas is output through the first air outlet 4, resulting in a poorer hand heating effect. However, more gas is output through the second air outlet 10, which increases the leg heating effect. Conversely, the lower the guide seat 11 is, the better the hand heating effect and the worse the leg heating effect. Therefore, users can adjust it at will according to the actual situation, which improves the practicality of this device.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A keyboard wrist rest height adjustment device, characterized in that, include: The device body consists of a plate (2) and a box (1), with an airbag (3) fixed to the top of the plate (2). Multiple first air outlets (4) are opened on the side wall of the plate (2) at the end away from the box (1). Multiple air inlets (9) and a second air outlet (10) are respectively opened on the side wall and bottom wall of the box (1). The housing (1) is equipped with an air supply component, an adjustment component and an inflation component; The air supply assembly is used to draw in external air from the air inlet (9), heat it, and then discharge it from the first air outlet (4) and the second air outlet (10); The adjustment component is used to adjust the air volume of the first air outlet (4) and the second air outlet (10); The inflation component and the adjustment component are driven together to inflate the airbag (3).

2. The keyboard wrist rest height adjustment device according to claim 1, characterized in that, The air supply assembly includes: A heating seat (17) is fixed inside the housing (1), and the heating seat (17) and the housing (1) form a cavity that is simultaneously connected to the first air outlet (4) and the second air outlet (10); The heating seat (17) has an open end on the side wall away from the cavity. The open end is positioned facing the air inlet (9). Multiple through holes (34) are provided on the side wall of the heating seat (17) directly opposite the open end. The heating base (17) has a fixed mounting frame (32), and a heating wire (33) is fixed inside the mounting frame (32). Multiple fans (31) are also fixed inside the heating base (17).

3. The keyboard wrist rest height adjustment device according to claim 2, characterized in that, The adjustment component includes: A support rod (12) is fixedly installed between the upper and lower inner walls of the housing (1) where the cavity is located. The axis of the support rod (12) is parallel to the side wall of the heating seat (17) where the through hole (34) is located. A guide seat (11) is slidably mounted on the support rod (12). One side wall of the guide seat (11) abuts against the side wall of the heating seat 17 where the through hole (34) is located, and the remaining side wall of the guide seat (11) abuts against the inner wall of the box (1) that forms the cavity. It also includes a power assembly, which is fixedly installed on the inner wall of the top of the cavity housing (1), and the power assembly is used to drive the guide seat (11) to move up and down along the support rod (12).

4. The keyboard wrist rest height adjustment device according to claim 3, characterized in that, The cross-section of the guide seat (11) is trapezoidal.

5. The keyboard wrist rest height adjustment device according to claim 3, characterized in that, The opening of the through hole (34) extends along the axial direction of the support rod (12) on the side wall of the heating seat (17).

6. The keyboard wrist rest height adjustment device according to claim 3, characterized in that, The power assembly includes: A rack (15) is slidably disposed on the inner wall of the top of the housing (1), and an internal threaded hole (21) is opened inside the rack (15). The motor (20) is fixed to the inner wall of the top of the housing (1); The third lead screw (19) is connected by a thread and an internal thread hole (21), and the third lead screw (19) is fixedly connected to the output shaft of the motor (20); Gear (14), which is rotatably mounted on the inner wall of the top of the housing (1); The second lead screw (13) is fixed to the bottom of the gear (14). The guide seat (11) has a second threaded hole at the top. The second lead screw (13) passes through the second threaded hole and is threadedly engaged with the second threaded hole.

7. The keyboard wrist rest height adjustment device according to claim 6, characterized in that, The inflation assembly includes: Sleeve (16), the sleeve (16) is fixed on the inner wall of the top of the box (1); Piston (22), which is slidably disposed within sleeve (16); The second spring (30) has one end fixed to the piston (22) and the other end fixed to the inner wall of the sleeve (16); Sleeve rod (23), the sleeve rod (23) is fixed on the side wall of piston (22), and a clutch assembly is provided at the end of the sleeve rod (23); Solenoid valve (29), which is fixed through the sleeve (16) side wall; An air supply pipe (18) is connected at one end to a solenoid valve (29) and at the other end to an airbag (3).

8. The keyboard wrist rest height adjustment device according to claim 7, characterized in that, The clutch assembly includes: Connecting block (24), which is fixed to the end of sleeve rod (23); The seat (25) is fixed to the top of the connecting block (24), and the seat (25) and the inner wall of the top of the box (1) are slidably connected; A stop (28) is slidably disposed within the seat (25); Electromagnet (26), said electromagnet (26) is fixed inside the base (25); The first spring (27) is fixed at one end to the electromagnet (26) and at the other end to the stop block (28).

9. A keyboard wrist rest height adjustment device according to claim 8, characterized in that, Also includes: Two connecting plates (5) are fixed on the side wall of the box (1). The top of each of the two connecting plates (5) is provided with a first threaded hole, and a first screw (7) is threaded into each of the two first threaded holes. Two mounting plates (6) are respectively rotatably mounted on the top of two first lead screws (7); Two rubber plates (8) are fixed to the top of two mounting plates (6) respectively.

10. A keyboard wrist rest height adjustment device according to claim 1, characterized in that, The first air outlet (4) and the air inlet (9) have the same opening direction.

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