CN218978402U - Keyboard layer board with novel adjusting device - Google Patents

Abstract

The utility model belongs to the technical field of computer cabins, in particular to a keyboard supporting plate with a novel adjusting device, which comprises: a first armrest for being disposed at one side of the seat; one end of the switching bracket is rotationally connected to the first armrest; the bottom surface of the middle part of the keyboard supporting plate is rotationally connected to the other end of the switching support; and a turntable for enabling the keyboard supporting plate and the switching support to be in rotary connection is arranged between the keyboard supporting plate and the switching support. The keyboard support plate can realize the opening and closing functions and the front and back adjusting functions of the keyboard support plate only through the structure of the switching support; when the keyboard support plate needs to be adjusted back and forth, a user can toggle the switching support to rotate, toggle the keyboard support plate to rotate until the keyboard support plate is perpendicular to the first handrail when toggling the switching support.

Description

Keyboard layer board with novel adjusting device

Technical Field

The utility model belongs to the technical field of computer cabins, in particular to a keyboard supporting plate with a novel adjusting device.

Background

At present, a computer is one of the most advanced scientific and technical utility models in the 20 th century, has extremely important influence on production activities and social activities of human beings, and has become an indispensable tool in daily life and work. People now like to use computers for office work, surfing the internet, playing games, watching movies, etc. When the computer is used for a long time, the health of the computer user can be affected by the quality of the computer chair.

The utility model of application number 202020136758.9 discloses a zero gravity computer cabin, which comprises a keyboard supporting plate, wherein the keyboard supporting plate rotates through an optical axis to realize opening and closing; and the sliding frame moves to realize front-back adjustment. However, in order to realize the opening and closing functions and the front and back adjusting functions of the keyboard supporting plate, the utility model is respectively provided with two groups of structures, so that the whole structure of the computer cabin becomes more complex.

Disclosure of Invention

The utility model aims to provide a keyboard supporting plate with a novel adjusting device.

The purpose of the utility model is realized in the following way:

a keyboard tray having a novel adjustment device, comprising:

a first armrest for being disposed at one side of the seat;

one end of the switching bracket is rotationally connected to the first armrest; and

the bottom surface of the middle part of the keyboard supporting plate is rotationally connected to the other end of the switching support;

and a turntable for enabling the keyboard supporting plate and the switching support to be in rotary connection is arranged between the keyboard supporting plate and the switching support.

Further, a switching assembly is arranged between the switching support and the first handrail, the switching assembly comprises a bearing seat fixed on the first handrail and a rotating shaft penetrating through the bearing seat, and two ends of the rotating shaft are respectively connected with the first handrail and the switching support.

Further, the switching assembly further comprises a clamp, the clamp is fixed on the first handrail, and one side of the clamp is provided with an adjusting end for adjusting tightness of the clamp; one end of the rotating shaft is positioned in the clamping hoop, and the tightness of the clamping hoop and the rotating shaft is changed by operating the adjusting end.

Further, an arc-shaped strip-shaped groove is formed in the switching support, a positioning pin penetrating through the strip-shaped groove is connected to the keyboard support plate, a first positioning component is arranged on the positioning pin and used for enabling the positioning pin to be fixed at different positions of the strip-shaped groove, and the keyboard support plate is locked after rotating to different angles.

Further, the positioning pin is provided with a thread, the positioning pin is arranged in the strip-shaped groove in a penetrating mode, and the first positioning component comprises a locking nut arranged on the positioning pin and is used for locking the positioning pin in the strip-shaped groove by driving the locking nut to abut against the edge of the strip-shaped groove.

Further, the transfer bracket includes:

the first bracket is rotationally connected with the first handrail;

the second bracket is arranged above the first bracket and is used for being rotationally connected with the keyboard supporting plate; a rotating joint is arranged between the first bracket and the second bracket and used for enabling the second bracket to rotate towards the vertical direction of the first bracket;

the adjusting screw is arranged between the first bracket and the second bracket; the first support or the second support is provided with a threaded hole, the adjusting screw rod is arranged in the threaded hole in a lifting mode, and the second support is rotated by driving the adjusting screw rod to act on the first support or the second support which is not provided with the threaded hole.

Further, the adjusting screw rod comprises a first adjusting screw rod and a second adjusting screw rod which are respectively arranged on the first bracket and the second bracket;

one end of the first adjusting screw rod is abutted against the second bracket;

and one end of the second adjusting screw rod penetrates through the adjusting hole and abuts against the first bracket at the edge of the adjusting hole.

Further, the outer edges of the first support and the second support are provided with a first folding edge and a second folding edge which are corresponding to each other, the second support is buckled on the first support through the first folding edge and the second folding edge, and the rotary joint is arranged between the first folding edge and the second folding edge.

Further, the locating pin is arranged on the keyboard supporting plate in a lifting and penetrating mode, and the locating pin is fixed on the second locating component in the keyboard supporting plate between the keyboard supporting plate and the locating pin.

Further, a plurality of fan-shaped distributed positioning holes are formed in the switching support, positioning bolts facing the positioning holes are arranged on the keyboard support plate, and the positions of the keyboard support plate under different angles are fixed by enabling the positioning bolts to be located in different positioning holes.

Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

the keyboard support plate can realize the opening and closing functions and the front and back adjusting functions of the keyboard support plate only through the structure of the switching support; when the keyboard supporting plate needs to be adjusted forwards and backwards, a user can toggle the switching support to rotate, and toggle the keyboard supporting plate to rotate until the keyboard supporting plate is perpendicular to the first handrail while toggling the switching support; compared with the normal state, the distance between the keyboard support plate and the seat is increased, so that the front and rear position of the keyboard support plate is adjusted by rotating the switching support and the keyboard support plate at the same time; otherwise, the user simultaneously toggles the switching support and the keyboard supporting plate in the opposite direction to reset the keyboard supporting plate to the original position; the whole structure is simple and convenient to assemble.

After the keyboard supporting plate rotates by any angle, the keyboard supporting plate can be positioned through the strip-shaped groove structure in the novel keyboard supporting plate, so that the flexibility of use is improved, and a user can conveniently adjust the keyboard supporting plate to the position most suitable for the user.

This patent is through rotatable second supporting structure, adjusts the inclination of keyboard layer board to ask the different user demand of adaptation user.

This patent uses through the cooperation of two adjusting screw, stabilizes the motion of second support, prevents that the second support from receiving external force not hard up, influences the use.

Drawings

Fig. 1 is a schematic diagram of the computer cabin in embodiment 1.

Fig. 2 is a schematic view of the structure of the seat in embodiment 1 in a normal state.

Fig. 3 is a schematic diagram of the structure of the keyboard tray in the opened state in embodiment 1.

Fig. 4 is a schematic diagram of the structure of the keyboard tray of embodiment 1 when it is adjusted back and forth.

FIG. 5 is a schematic structural view of the novel adjusting device in example 1

Fig. 6 is a schematic structural diagram of the first handrail and the adapting bracket in embodiment 1.

Fig. 7 is an exploded view of the transfer module of example 1.

Fig. 8 is a bottom schematic view of the keyboard tray in embodiment 1.

Fig. 9 is a schematic view of the structure of the clip in embodiment 1.

Fig. 10 is a schematic view of the keyboard tray of embodiment 2.

Fig. 11 is a schematic view of the structure at the transfer bracket in embodiment 2.

Fig. 12 is a schematic view of the structure of the transfer bracket in embodiment 2.

Fig. 13 is an exploded view of the transfer bracket of example 2.

Fig. 14 is a schematic cross-sectional view of the first adjusting screw in example 2.

Fig. 15 is a schematic cross-sectional view of the second adjusting screw in example 2.

The meaning indicated by the reference numerals in the figures:

1. a base;

2. a seat; 21. a second armrest; 23. a first armrest;

3. a cantilever; 31. a computer screen;

4. a keyboard pallet; 41. a turntable; 42. positioning a bolt; 43. a U-shaped bracket; 44. a first adjustment nut; 45. a second adjustment nut; 46. an extension protrusion;

5. a transfer bracket; 511. a bearing seat; 512. a rotating shaft; 513. a clamp; 5131. a hooping port; 5132. an adjusting screw; 514. screw holes;

52. a strip-shaped groove; 53. a positioning pin; 54. a lock nut;

55. a first bracket; 551. a first hem; 56. a second bracket; 561. a second flanging; 57. a rotating joint; 581. a first adjusting screw; 582. a second adjusting screw; 583. a threaded hole; 584. an adjustment aperture; 585. a first positioning nut; 586. a second positioning nut;

591. positioning holes;

Detailed Description

The utility model is further described with reference to the following specific examples:

example 1:

the patent is used in a computer cabin, as shown in fig. 1, and comprises a base 1, a seat 2 arranged on the base 1, a cantilever 3 arranged on the seat 2 and a keyboard supporting plate 4 arranged in front of the seat 2; the cantilever 3 is connected with a driving device for driving the cantilever 3 to rotate, the cantilever 3 is used for placing the computer screen 31, and the position of the computer screen 31 is adjusted by driving the cantilever 3 to rotate through the driving device.

The computer cabin further comprises a keyboard supporting plate, as shown in fig. 2 and 3, and the novel adjusting device comprises a first armrest 23, a switching support 5 and a keyboard supporting plate 4.

As shown in fig. 2-4, the seat 2 is used for sitting on a person, a first armrest 23 is arranged on one side of the seat 2, a second armrest 21 is arranged on the other side of the seat 2, and the first armrest 23 and the second armrest 21 are used for supporting arms of a user; the length of the first armrest 23 is greater than the length of the second armrest 21 in order to facilitate mounting of the adapter bracket 5 and the keyboard tray 4 on the first armrest 23.

The transfer support 5 is made of metal plates, and the square tubular transfer support 5 is made by splicing the metal plates through metal plates; the first handrail 23 is also formed by splicing a plurality of metal plates, and the interior of the first handrail 23 is hollow so as to facilitate the connection of the first handrail 23 with the adapter bracket 5. The switching support 5 is connected with the first handrail 23 through a switching component, the switching component comprises a bearing seat 511 fixed on the first handrail 23, and a rotating shaft 512 penetrating through the bearing seat 511, and two ends of the rotating shaft 512 are respectively connected with the first handrail 23 and the switching support 5. As shown in fig. 9 and 10, the outer edge of the bearing seat 511 is integrally formed with a plurality of screw holes 514, the bearing seat 511 is disposed on the upper end surface of the first handrail 23, and the bearing seat 511 is fixed on the first handrail 23 by the screw holes 514 formed on the outer edge of the bearing seat 511; the bearing seat 511 is internally provided with a bearing member, the rotating shaft 512 is arranged in the first handrail 23 in a penetrating manner, the bearing member is connected to the middle part of the rotating shaft 512, and the upper end of the rotating shaft 512 is connected to the adapting bracket 5.

The adapter assembly in this embodiment further comprises a clip 513, the clip 513 being secured to the underside of the first armrest 23. As shown in fig. 10, a collar 5131 is provided on one side of the collar 513, an adjusting screw 5132 is inserted into the collar 5131, the tightness of the collar 513 can be adjusted by driving the adjusting screw 5132, and at this time, the end of the collar 513 provided with the collar 5131 is the adjusting end of the collar 513; the left and right sides of the clamp 513 are provided with a plurality of screw holes for fixing the clamp 513 to the first armrest 23. After installation, the shaft 512 passes through the first armrest 23 and is inserted into the clamp 513, and at this time, the tightness of the clamp 513 can be adjusted by the adjusting screw 5132 to limit the rotation of the shaft 512, so that the shaft 512 does not act under the condition of not receiving an external force, and the shaft 512 rotates only after receiving a certain external force, even if a user manually toggles the adapting bracket 5.

A turntable 41 is connected between the other end of the switching support 5 and the keyboard supporting plate 4, and the switching support 5 is rotatably connected with the keyboard supporting plate 4 through the turntable 41. As shown in fig. 3 and 4, the keyboard tray 4 is a square plate, the turntable 41 is fixed in the middle of the bottom surface of the keyboard tray 4, and the keyboard tray 4 is rotated along with the turntable 41 by toggling the keyboard tray 4. The turntable 41 can increase the contact surface between the keyboard tray 4 and the adapter bracket 5, so that the keyboard tray 4 is more stable.

The novel adjusting device can simultaneously realize the opening and closing functions and the front and back adjusting functions of the keyboard supporting plate 4. In a normal state, as shown in fig. 2, the keyboard tray 4 is disposed between the first armrest 23 and the second armrest 21, and is perpendicular to the first armrest 23 and the second armrest 21, and can limit a user on the seat 2. When the keyboard supporting plate 4 needs to be opened and closed, the switching support 5 is shifted, so that the switching support 5 rotates around the rotation point of the switching support 5 and the first handrail 23, at the moment, the keyboard supporting plate 4 rotates along with the rotation of the switching support 5, and when a certain angle is opened, an opening for people to walk is formed between the keyboard supporting plate 4 and the second handrail 21; similarly, the user can toggle the switching bracket 5 in the opposite direction to reset the keyboard tray 4 between the first armrest 23 and the second armrest 21 for limiting. When the keyboard supporting plate 4 needs to be adjusted back and forth, a user can toggle the switching support 5 to rotate, and toggle the keyboard supporting plate 4 to rotate until the keyboard supporting plate 4 is perpendicular to the first handrail 23 while toggling the switching support 5; the distance between the keyboard tray 4 and the seat 2 becomes larger at this time than in the normal state, so that the front-rear position adjustment of the keyboard tray 4 is performed by the simultaneous rotation of the adapter bracket 5 and the keyboard tray 4; otherwise, the user simultaneously toggles the switching support 5 and the keyboard supporting plate 4 in the opposite direction to reset the keyboard supporting plate 4 to the original position. To sum up, this patent is only through the structure of switching support 5, realizes the opening closure function and the fore-and-aft regulatory function of keyboard layer board 4 simultaneously, and the structure is retrenched, is convenient for assemble.

Further, the adapting support 5 is provided with a plurality of positioning holes 591 distributed in a fan shape, the keyboard support plate 4 is provided with positioning pins 42 facing the positioning holes 591, and the positions of the keyboard support plate 4 under different angles are fixed by inserting the positioning pins 42 into different positioning holes 591. In this embodiment, the positioning hole 591 and the positioning pin 42 are disposed at one end of the adapting support 5 and the keyboard support plate 4 near the first armrest 23, as shown in fig. 5-8, the top plate of the adapting support 5 is provided with an extending protrusion 46 towards the first armrest 23, the extending protrusion 46 is in a fan shape, and the positioning holes 591 are distributed in the fan shape in the extending protrusion 46; one end of the keyboard tray 4 is opposite to the extending protrusion 46, and a U-shaped bracket 43 is provided thereon, and a spring pin is provided in the U-shaped bracket 43.

The spring pin in the patent is a standard component, and in a normal state, the spring pin is inserted into the positioning hole 591 in a downward movement under the action of an internal spring, at this time, the keyboard support plate 4 and the switching support 5 are in a positioning state under the action of the positioning bolt 42, and a user can only toggle the switching support 5 to rotate so as to open the keyboard support plate 4; the spring pin is positioned to prevent a user from operating the keyboard tray 4 by mistake when the user needs to open the keyboard tray 4. When the user needs to rotate the keyboard tray 4, the spring pin is lifted upwards, so that the spring pin leaves the positioning hole 591 to release the positioning state of the keyboard tray 4; at this time, the user can rotate the keyboard tray 4 while making the spring pins opposite to the different positioning holes 591, and after determining the rotation angle of the keyboard tray 4, release the spring pins to reinsert into the positioning holes 591 for positioning.

It should be noted that, in this patent, for a typical user, when the keyboard tray 4 is perpendicular to the first arm rest 23, the keyboard tray 4 is at the most comfortable position for the user to use, and in fact, the slight deviation of the keyboard tray 4 will not affect the normal use of the keyboard tray 4.

In some embodiments, the positioning pin 42 may be in a bolt structure, and accordingly, the positioning hole 591 may be provided as a threaded hole, or a nut corresponding to the positioning pin 42 may be provided, so as to separate or connect the positioning pin 42 and the positioning hole 591. However, if the bolt structure is adopted, the disassembly of the positioning bolt 42 is complicated, and the adjusting speed of the keyboard tray 4 is affected.

In some embodiments, the turntable 41 may be disposed at one end of the keyboard tray 4 to rotate the keyboard tray 4; but this would result in an excessive amount of rotation of the keyboard tray 4, affecting the operation of the keyboard tray 4.

Example 2:

most of the structures of this embodiment are the same as those of embodiment 1, except that the structure of the adapter bracket 5 is different from that of embodiment 1.

As shown in fig. 10 and 11, the adapting bracket 5 is provided with an arc-shaped strip-shaped groove 52, the keyboard tray 4 is provided with a positioning pin 53 corresponding to the strip-shaped groove 52, the positioning pin 53 is provided with a first positioning component, and the first positioning component is used for fixing the positioning pin 53 at different positions of the strip-shaped groove 52 so as to lock the keyboard tray 4 after rotating to different angles.

As shown in fig. 11, an extending protrusion 46 is provided on one side of the adapting bracket 5, and an arc-shaped strip-shaped groove 52 is provided on the extending protrusion 46; the positioning pin 53 is specifically a screw, a screw thread is arranged on the screw, a column head is arranged at one end of the screw, the positioning pin 53 penetrates through the strip-shaped groove 52, the upper end of the positioning pin 53 is connected with the keyboard supporting plate 4, the column head is located at the lower side of the strip-shaped groove 52 and props against the adapting support 5 on the outer edge of the strip-shaped groove 52, the first positioning component comprises a locking nut 54 arranged on the positioning pin 53 and used for propping against the edge of the strip-shaped groove 52 through driving the locking nut 54, and the positioning pin 53 is locked in the strip-shaped groove 52 by being clamped on the extending convex part 46 in cooperation with the column head of the screw. When the keyboard tray 4 needs to be rotated, the locking nut 54 is loosened to loosen the positioning pin 53 in the strip groove 52, and the keyboard tray 4 can be driven to rotate by the turntable 41 arranged between the keyboard tray 4 and the adapting bracket 5. The advantage of the strip groove 52 is that after the keyboard tray 4 rotates by any angle, the keyboard tray 4 can be positioned by the strip groove 52 structure in the patent, so that the flexibility of use is increased, and the keyboard tray 4 can be conveniently adjusted to the position most suitable for the user by the user.

In addition, since the keyboard supporting plate 4 in the patent is connected with the switching support 5 through the turntable in the keyboard supporting plate 4, if one end of the keyboard supporting plate 4 is stressed, the keyboard supporting plate 4 is easy to incline, and if serious, the keyboard supporting plate 4 is damaged and broken; the keyboard support plate 4 and the switching support 5 are connected up and down through the positioning pins 53, so that the keyboard support plate 4, the positioning pins 53 and the switching support 5 are connected into a stable support structure, and the stability of the keyboard support plate 4 is ensured.

In some embodiments, the end of the screw may be provided with no stud, and the fixing of the positioning pin 53 may be performed by driving the locking nut 54 against the edge of the strip-shaped groove 52 and by friction between the locking nut 54 and the edge of the strip-shaped groove 52.

In fact, as shown in fig. 12 and 13, the switching bracket 5 in this patent is composed of two parts, including a first bracket 55 and a second bracket 56, and the first bracket 55 is connected to the first armrest 23 through the switching assembly; the first support 55 is square overall, a plurality of upward first folded edges 551 are arranged on the outer edge of the first support 55, and a plurality of reinforcing ribs are arranged on the first support 55 in the first folded edges 551 and used for reinforcing the overall strength of the first support 55.

The second bracket 56 is square in whole, the second bracket 56 is provided with a rotary table 41, and the rotary table 41 is connected with the keyboard supporting plate 4; the front and back sides and the right side of the second bracket 56 are provided with second folded edges 561, and the left side of the second bracket 56, which is not provided with the second folded edges 561, is buckled above the first bracket 55, so that the second folded edges 561 on the front and back sides are opposite to the first folded edges 551, a rotating joint 57 is arranged between the first folded edges 551 and the second folded edges 561, and the rotating joint 57 comprises rotating holes respectively arranged on the first folded edges 551 and the second folded edges 561, and rotating shafts penetrating through the two rotating holes. After the buckling, a certain gap is further provided between the first bracket 55 and the second bracket 56, so that the second bracket 56 swings around the rotating joint 57 up and down to enable the rotating structure of the first bracket 55 and the second bracket 56 to be more stable through the buckling of the two brackets.

The patent is also provided with an adjusting screw rod which is arranged between the first bracket 55 and the second bracket 56; the first bracket 55 or the second bracket 56 is provided with a threaded hole 583, the adjusting screw is arranged in the threaded hole 583 in a lifting manner, and the second bracket 56 is rotated by driving the adjusting screw to act on the first bracket 55 or the second bracket 56 which is not provided with the threaded hole 583.

As shown in fig. 13-15, in this embodiment, the adjusting screw includes a first adjusting screw 581 and a second adjusting screw 582 respectively disposed on a first bracket 55 and a second bracket 56, a first positioning nut 585 and a second positioning nut 586 respectively corresponding to the first adjusting screw 581 and the second adjusting screw 582 are disposed on the first bracket 55 and the second bracket 56, the first positioning nut 585 and the second positioning nut 586 are fixed thereon by welding, the first adjusting screw 581 passes through the first positioning nut 585 from bottom to top, and the upper end thereof abuts against the second bracket 56; the first bracket 55 is further provided with an adjusting hole 584, the second adjusting screw rod 582 is also threaded through the adjusting hole 584 from bottom to top and then is threaded through the second positioning nut 586, the first adjusting screw rod 581 and the second adjusting screw rod 582 are respectively provided with a column head, and the first adjusting screw rod 581 and the second adjusting screw rod 582 can respectively move in the first positioning nut 585 and the second positioning nut 586 by operating the column head through a screwdriver; in the second adjusting screw 582, one end of the second adjusting screw 582 may be abutted against the first bracket 55 along the edge of the adjusting hole 584 by increasing the width of the stud on the second adjusting screw 582 or adding a spacer.

At this time, the second bracket 56 may be normally lifted upward by adjusting the first adjusting screw 581 upward, thereby achieving the upward rotation of the second bracket 56; but during the rotation of the second bracket 56, the second adjusting screw 582 is driven upwards at the same time until the column head of the second adjusting screw 582 abuts against the first bracket 55 to limit; conversely, the first adjusting screw 581 may be adjusted to be upwards to pull the second bracket 56 downwards, so as to realize the downward rotation of the second bracket 56, and in the process of the downward rotation of the second bracket 56, the second bracket 56 will finally abut against the end of the first adjusting screw 581, that is, the up-and-down movement of the second bracket 56 is limited by the first adjusting screw 581 and the second adjusting screw 582, respectively, so that the user needs to adjust the first adjusting screw 581 and the second adjusting screw 582 simultaneously, so as to realize the rotation of the second bracket 56, thereby realizing the fine adjustment of the keyboard supporting board 4. The two adjusting screws have the advantages that the movement of the second bracket 56 is stabilized through the cooperation of the two adjusting screws, and the second bracket 56 is prevented from being loosened by external force to influence the use.

Further, the positioning pin 53 is vertically and horizontally arranged on the keyboard tray 4, and the positioning pin 53 is fixed between the keyboard tray 4 and the positioning pin 53 to be a second positioning component in the keyboard tray 4. In this embodiment, as shown in fig. 11, a U-shaped bracket 43 disposed downward is disposed on the bottom surface of the keyboard tray 4, and a jack is disposed on the U-shaped bracket 43; the upper end of the positioning pin 53 passes through the 43 plug hole of the U-shaped bracket, and the second positioning assembly comprises a first adjusting nut 44 and a second adjusting nut 45 respectively positioned at two sides of the plug hole. The first adjusting nut 44 and the second adjusting nut 45 are provided in such a way that the distance between the keyboard tray 4 and the adapter bracket 5 is changed after the second bracket 56 is adjusted, and the connection between the keyboard tray 4 and the adapter bracket 5 needs to be adjusted adaptively by this structure.

In some embodiments, if the first bracket 55 and the second bracket 56 are not provided, the upper end of the positioning pin 53 may be directly welded to the keyboard tray 4, which may also achieve normal adjustment of the positioning pin 53.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (10)

1. A keyboard tray having a novel adjustment device, comprising:

a first armrest (23) for being arranged on one side of the seat (2);

a switching bracket (5) one end of which is rotatably connected to the first armrest (23); and

the bottom surface of the middle part of the keyboard supporting plate (4) is rotationally connected to the other end of the switching bracket (5);

a rotary table (41) for enabling the keyboard supporting plate (4) and the switching support (5) to be in rotary connection is arranged between the keyboard supporting plate and the switching support.

2. A keyboard tray with a novel adjustment device according to claim 1, characterized in that: the switching support (5) with be equipped with switching subassembly between first handrail (23), the switching subassembly is including fixing bearing frame (511) on first handrail (23) to and wear to establish pivot (512) in bearing frame (511), the both ends of pivot (512) are connected respectively first handrail (23) and switching support (5).

3. A keyboard tray with a novel adjusting device according to claim 2, characterized in that: the switching assembly further comprises a clamp (513), the clamp (513) is fixed on the first handrail (23), and one side of the clamp is provided with an adjusting end for adjusting tightness of the clamp (513); one end of the rotating shaft (512) is positioned in the clamping hoop (513), and the tightness between the clamping hoop (513) and the rotating shaft (512) is changed by operating the adjusting end.

4. A keyboard tray with a novel adjusting device according to any one of claims 1-3, characterized in that: the keyboard support plate (4) is characterized in that an arc-shaped strip-shaped groove (52) is formed in the switching support (5), a positioning pin (53) penetrating through the strip-shaped groove (52) is connected to the keyboard support plate (4), a first positioning component is arranged on the positioning pin (53), and the first positioning component is used for enabling the positioning pin (53) to be fixed at different positions of the strip-shaped groove (52) so that the keyboard support plate (4) can be locked after being rotated to different angles.

5. A keyboard tray with a novel adjustment device according to claim 4, wherein: the positioning pin (53) is provided with threads, the positioning pin (53) is arranged in the strip-shaped groove (52) in a penetrating mode, and the first positioning assembly comprises a locking nut (54) arranged on the positioning pin (53) and is used for locking the positioning pin (53) in the strip-shaped groove (52) by driving the locking nut (54) to abut against the edge of the strip-shaped groove (52).

6. A keyboard pallet with a novel adjusting device according to claim 4, characterized in that the adapter bracket (5) comprises:

the first bracket (55), the first bracket (55) is connected with the first armrest (23) in a rotating way;

the second bracket (56) is arranged above the first bracket (55) and is used for being rotationally connected with the keyboard supporting plate (4); a rotating joint (57) is arranged between the first bracket (55) and the second bracket (56) and is used for enabling the second bracket (56) to rotate towards the vertical direction of the first bracket (55);

an adjusting screw rod arranged between the first bracket (55) and the second bracket (56); screw holes (583) are formed in the first support (55) or the second support (56), the adjusting screw is arranged in the screw holes (583) in a lifting mode, and the second support (56) is rotated by driving the adjusting screw to act on the first support (55) or the second support (56) which is not provided with the screw holes (583).

7. The keyboard tray with the novel adjusting device according to claim 6, wherein the adjusting screw comprises a first adjusting screw (581) and a second adjusting screw (582) respectively arranged on the first bracket (55) and the second bracket (56);

one end of the first adjusting screw (581) is abutted against the second bracket (56);

an adjusting hole (584) is further formed in the first support (55), and one end of the second adjusting screw rod (582) penetrates through the adjusting hole (584) and abuts against the first support (55) at the edge of the adjusting hole (584).

8. A keyboard tray with a novel adjustment device according to claim 6, wherein: the outer edges of the first support (55) and the second support (56) are provided with a first folded edge (551) and a second folded edge (561) which are corresponding to each other, the second support (56) is buckled on the first support (55) through the first folded edge (551) and the second folded edge (561), and the rotary joint (57) is arranged between the first folded edge (551) and the second folded edge (561).

9. A keyboard tray with a novel adjustment device according to claim 6, wherein: the locating pin (53) is arranged on the keyboard supporting plate (4) in a lifting and penetrating mode, and the locating pin (53) is fixed on a second locating component in the keyboard supporting plate (4) between the keyboard supporting plate (4) and the locating pin (53).

10. A keyboard tray with a novel adjusting device according to any one of claims 1-3, characterized in that: be equipped with a plurality of fan-shaped locating holes (591) of distributing on switching support (5), be equipped with on keyboard layer board (4) towards location bolt (42) of locating hole (591), fix the position of keyboard layer board (4) under different angles through making location bolt (42) are arranged in different locating holes (591).

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