CN115985709A

CN115985709A - Small keyboard device

Info

Publication number: CN115985709A
Application number: CN202310266397.8A
Authority: CN
Inventors: 纪海鹏; 翟伟
Original assignee: Shenzhen Yamila Electronic Technology Co ltd
Current assignee: Shenzhen Yamila Electronic Technology Co ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-04-18
Anticipated expiration: 2043-03-20
Also published as: CN115985709B

Abstract

The invention discloses a small keyboard device, which relates to the field of industrial keyboards and comprises a keyboard and a fixed frame, wherein a clamping plate is arranged above the fixed frame, a plurality of groups of keys are arranged on the side surface of the keyboard, a sensing mechanism is connected to the inner part of the keyboard below each group of keys, a sealed bin is arranged around the sensing mechanism, and a sealed cavity is arranged in the sealed bin. When the keys are pressed, the keys can extrude gas in the sealing cavity through the keys to exhaust the gas to clean the outer sides of the keys, when the keyboard is locked, the keyboard needs to be rotated, the rotating shaft drives the movable head to move, the movable head is in contact with the extrusion block to push the movable head to move, the movable head drives the moving frame and the plurality of groups of moving rods to move, the moving rods push the insertion columns to move through the extrusion columns on the outer sides, the insertion columns drive the keys to enter the sealing cavity, and the gas in the sealing cavity is pushed out to clean the outer sides of the keys in the process.

Description

Small keyboard device

Technical Field

The invention relates to the field of industrial keyboards, in particular to a small keyboard device.

Background

The industrial keyboard is a keyboard widely applied to the fields of petrochemical industry, mechanical manufacturing, transportation, electric power, national defense, military industry, aerospace, internet, agriculture, voice numerical control, automatic control, medical treatment, communication, measuring instruments, ATM machines, inquiry terminals and the like. The industrial keyboard has a different usage environment from that of a PC keyboard, the shape of the industrial keyboard changes with the change of functions, and in order to improve the operation stability of the device, the industrial keyboard generally needs to add a mechanism such as a dead lock switch.

But current locking mechanism all is apron or electron button to the keyboard dead of locking usually, when locking the keyboard, still receives external disturbance easily, if the collision causes the keyboard to damage, still can send wrong signal to the equipment in, lead to equipment wrong operation, secondly, in the use to the keyboard, external dust is attached to the keyboard outside very easily, can influence the keyboard for a long time and use.

Disclosure of Invention

Based on this, the invention aims to provide a small keyboard device to solve the technical problems that a keyboard is not easy to lock and dust is easy to adhere to the keyboard.

In order to achieve the purpose, the invention provides the following technical scheme: keypad device, including keyboard and mount, the block board is installed to the top of mount, the side-mounting of keyboard has the multiunit button, the inside below that is located each group's button of keyboard all is connected with response mechanism, and has seted up the sealed storehouse around response mechanism, the sealed chamber has been seted up to the inside of sealed storehouse, and response mechanism is located the inside in sealed chamber, and the response mechanism bottom is connected with the circuit board, the circuit board is connected with the socket through the wire, the bottom coupling mechanism of block board, and the circuit board passes through the socket and the coupling mechanism switch-on, the button inner wall is connected with the gas injection net, and the gas injection net is located the top of sealed storehouse, the both sides of keyboard are connected with the pivot, the keyboard rotates through pivot and mount to be connected, the both ends of keyboard are connected with first sideboard and second sideboard respectively, the side of mount is connected with the limiting plate, the keyboard is spacing through first sideboard and second sideboard and limiting plate block.

Through adopting above-mentioned technical scheme, can be convenient lock the keyboard and die, and when the keyboard pressurized, through the air of button extrusion seal intracavity, make the air clear up the button through jet-propelled net blowout, reduce the dust and pile up in the button outside.

The invention is further arranged in that the sensing mechanism comprises a base and an insertion column, the base is fixedly connected with the circuit board, and the base comprises: return spring and response element, and the bottom of inserting the post extends to the inside and return spring swing joint of base.

Through adopting above-mentioned technical scheme, can be convenient turn into the signal of telecommunication to the extrusion of base to the button and transmit external equipment to control external equipment.

The invention is further set that the connecting mechanism comprises a sliding rod and a plug connector, the plug connector is positioned inside the sliding rod, one side of the sliding rod is connected with a lead, the plug connector is connected with external equipment through the sliding rod, the sliding rod penetrates through the fixing frame and extends to the inside of the keyboard to be attached to the socket, and the plug connector is plugged with the socket.

Through adopting above-mentioned technical scheme, can be convenient be connected keyboard and external equipment or cut off to the convenience is locked the keyboard.

The keyboard is further provided with a movable frame connected inside the keyboard, two sides of the movable frame are attached to the inner wall of the keyboard, two sides of the movable frame respectively extend to the inside of each group of rotating shafts and are connected with a movable head and a spring rod, the end part of the movable head extends to the outer side of the rotating shafts and is located in a cavity in the fixed frame, the end part of the movable head is conical, an extrusion block is installed in the cavity in the fixed frame, the movable head is not in contact with the extrusion block when the key is upward, the extrusion block extrudes the movable head when the key is downward so as to push the movable frame to move inside the keyboard, the spring rod is located in the rotating shaft far away from the movable head, and the spring rod is movably connected with the rotating shafts through springs on the outer sides.

By adopting the technical scheme, the keyboard can be rotated, and meanwhile, the moving frame is moved, so that the moving frame moves along with the rotation of the keyboard.

The invention is further arranged in that a plurality of groups of moving rods are connected in the moving frame, each group of moving rods all penetrate through the sealed bin and extend to the side surface of each group of inserting columns to be connected with an extruding column, the side surface of each inserting column, which is close to the moving rods, is provided with an inclined surface slot matched with the extruding column, and when the moving head drives the moving rods to move, the extruding column is inserted into the inclined surface slot and pushes the inserting columns to move.

Through adopting above-mentioned technical scheme, can drive the removal of multiunit movable rod when moving frame removes, make the movable rod drive the extrusion post and insert in the inclined plane fluting to in the promotion inserted column inserts the base, drive the button and enter into sealed intracavity, make partial gas injection net enter into sealed intracavity.

The keyboard is further provided with clamping grooves at the top end and the bottom end of the limiting plate, the first side plate and the second side plate are connected with the limiting plate in a clamping mode through different clamping grooves, the top ends of the first side plate and the second side plate are flush with the top end of the keyboard, and the thickness of the second side plate is smaller than that of the first side plate.

By adopting the technical scheme, the keyboard can be conveniently limited.

The airbag is further arranged in such a way that the bottom end of the first sideboard is connected with the airbag and the buffer plate, when the first sideboard is attached to the outer side of the limiting plate, the airbag and the buffer plate are positioned between the first sideboard and the limiting plate, and the airbag is extruded at the moment to contract the airbag.

Through adopting above-mentioned technical scheme, after the keyboard rotates, absorb the impact force that produces when rotating through the gasbag, and the keyboard is rotating and gasbag and limiting plate collision back, make the moment of torsion that turns into the keyboard removal repeatedly with the impact force, carry out slight patting to the keyboard outside, the convenience is cleared up the dust in the keyboard outside.

In summary, the invention mainly has the following beneficial effects:

1. according to the keyboard, the fixing frame, the clamping plate and the rotating shaft are arranged, when the keyboard is not required to be used, the clamping plate is firstly pushed to move out of the second side plate, the limit on the keyboard is removed, meanwhile, the plug connector is pulled out of the socket, the connection between the keyboard and external equipment is cut off, then the keyboard is pushed to rotate, the keyboard rotates through the rotating shaft and the fixing frame, the keyboard faces downwards, and therefore the keyboard cannot be operated conveniently, the keyboard can be effectively locked, and the problem that the keyboard is not prone to being locked is effectively solved.

2. According to the invention, through the arranged keys, the rotating shaft, the extrusion block, the moving rod and the moving frame, when the keys are pressed, gas in the sealing cavity can be extruded through the keys, so that the gas is discharged to clean the outer sides of the keys, and when the keyboard is locked, the keyboard needs to be rotated.

3. The keyboard can rotate, and when the keys are driven to move by the movable frame and the movable rod, most of the air injection net can be positioned in the sealing cavity, so that external dust is prevented from entering the sealing cavity, and the cleanliness of the keys is improved.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a schematic cross-sectional view of the locked state of the present invention;

FIG. 5 is a schematic view of a structure of a fastening plate according to the present invention;

FIG. 6 is a schematic view of a mounting structure of the engaging plate according to the present invention;

FIG. 7 is a schematic view of a connection structure of a keyboard and a fixing frame according to the present invention;

FIG. 8 is a schematic view of the extrusion block of the present invention;

FIG. 9 is a schematic view of the structure of the plunger and the movable rod of the present invention.

In the figure: 1. a keyboard; 101. a first side plate; 102. a second side plate; 103. an air bag; 104. a buffer plate; 2. a fixed mount; 201. a limiting plate; 202. a clamping groove; 3. a clamping plate; 301. a slide bar; 302. a plug-in connector; 303. a wire; 4. pressing a key; 401. an air-jet net; 5. a rotating shaft; 6. a socket; 7. a circuit board; 8. a base; 9. inserting a column; 901. grooving the inclined plane; 10. sealing the bin; 1001. sealing the cavity; 11. a travel bar; 1101. extruding the column; 12. extruding the block; 13. moving the frame; 1301. a movable head; 1302. a spring rod.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The following describes an embodiment of the present invention based on its overall structure.

Keypad device, as shown in fig. 1 to 9, including keyboard 1 and mount 2, block board 3 is installed to the top of mount 2, can carry on spacingly to keyboard 1 through block board 3, and the side-mounting of keyboard 1 has multiunit button 4, and the inside below that is located each group button 4 of keyboard 1 all is connected with induction mechanism, and induction mechanism includes base 8, inserts post 9, base 8 and 7 fixed connection of circuit board, and the inside of base 8 includes: the keyboard comprises a return spring and a sensing element, wherein the bottom end of an insertion column 9 extends into a base 8 and is movably connected with the return spring, a sealing chamber 10 is formed around a sensing mechanism, a sealing chamber 1001 is formed inside the sealing chamber 10, the sensing mechanism is located inside the sealing chamber 1001, a circuit board 7 is connected to the bottom end of the sensing mechanism, the circuit board 7 is connected with a socket 6 through a wire, the bottom end of a clamping plate 3 is connected with the circuit board 7, the circuit board 7 is connected with a connecting mechanism through the socket 6, when the keyboard 1 is used, the insertion column 9 is pushed to extrude the base 8 by pressing a key 4, a signal is generated, the signal is transmitted into external equipment through the wire, the socket 6 and a plug 302, the inner wall of the key 4 is connected with an air injection net 401, the air injection net 401 is located above the sealing chamber 10, when the key 4 is squeezed, the key 4 can move downwards in the sealing chamber 1001 to extrude gas in the sealing chamber 1001, the gas is sprayed out of the air injection net 401 outside the key 4, dust accumulated outside the key 4 is removed, and the dust is far away from the key 4, and the key 4 is cleaned;

the two sides of the keyboard 1 are connected with rotating shafts 5, the keyboard 1 is rotatably connected with a fixing frame 2 through the rotating shafts 5, two ends of the keyboard 1 are respectively connected with a first side plate 101 and a second side plate 102, the side face of the fixing frame 2 is connected with a limiting plate 201, the keyboard 1 is clamped and limited with the limiting plate 201 through the first side plate 101 and the second side plate 102, when the keyboard 1 needs to be locked, the clamping plate 3 is firstly pushed, the clamping plate 3 is separated from the upper side of the second side plate 102, the limitation on the keyboard 1 is removed, at the moment, a plug 302 is drawn out from a socket 6, the connection between the keyboard 1 and external equipment is cut off, then the keyboard 1 is pushed to rotate, the keyboard 1 rotates around the rotating shafts 5, the keyboard 1 faces downwards until the first side plate 101 is attached to the limiting plate 201, at the moment, multiple groups of keys 4 face downwards simultaneously, the possibility that the keyboard 1 is in operation due to mistakenly touching the keyboard 1 when the external equipment does not need to be controlled can be effectively avoided, at the situation that the equipment runs problematically, and at the multiple groups of the keys 4 face downwards, dust can be reduced outside of the keys 4, the keyboard 1, the cleanliness of the keys 4 is further improved, and the cleanliness of the keys can be further, and the first side plate 101 and the keyboard 1 can be reduced when the keyboard 1 is attached to the limiting plate 201 in the limiting plate in the rotating process of the rotating;

the inner part of the keyboard 1 is connected with a movable frame 13, two sides of the movable frame 13 are attached to the inner wall of the keyboard 1, two sides of the movable frame 13 respectively extend to each set of rotating shafts 5 and are connected with a movable head 1301 and a spring rod 1302, the end part of the movable head 1301 extends to the outer side of the rotating shaft 5 and is positioned in a cavity in the fixed frame 2, the end part of the movable head 1301 is conical, a squeezing block 12 is arranged in the cavity in the fixed frame 2, the movable head 1301 is not contacted with the squeezing block 12 when the key 4 faces upwards, the squeezing block 12 squeezes the movable head 1301 when the key 4 faces downwards so as to push the movable frame 13 to move in the keyboard 1, the spring rod 1302 is positioned in the rotating shaft 5 far away from the movable head 1301, the spring rod 1302 is movably connected with the rotating shaft 5 through a spring on the outer side, a plurality of groups of movable rods 11 are connected in the movable frame 13, each group of movable rods 11 all extend to the side surface of each group of the insertion column 9 through the sealed bin 10 and are connected with a squeezing column 1101, the side of the inserted column 9 close to the moving rod 11 is provided with an inclined groove 901 matched with the extrusion column 1101, when the moving head 1301 drives the moving rod 11 to move, the extrusion column 1101 is inserted into the inclined groove 901 and pushes the inserted column 9 to move, the moving head 1301 is driven by the rotating shaft 5 to rotate so as to enable the moving head 1301 to be attached to the extrusion block 12, when the moving head 1301 drives the moving rod 11 to move, the moving head 1301 moves towards the inside of the rotating shaft 5 so as to push the moving frame 13 to move inside the keyboard 1, the moving frame 13 drives a plurality of groups of moving rods 11 connected with the inner wall to move synchronously, the moving rod 11 is connected with the extrusion column 1101 on the side of the inserted column 9, the inner wall of the inserted column 9 is provided with an inclined groove 901 matched with the extrusion column 1101, the extrusion column 1101 can be inserted into the inclined groove 901 during the moving process so as to push the inserted column 9 to be inserted into the base 8, therefore, all groups of movable keys 4 are driven to enter the sealed cavity 1001 at the same time, and the dust is removed from the outer sides of the groups of keys 4 synchronously.

Referring to fig. 3 to 5, the connection mechanism includes a slide bar 301 and a plug 302, the plug 302 is located inside the slide bar 301, one side of the slide bar 301 is connected with a wire 303, the plug 302 is connected with an external device through the slide bar 301, the slide bar 301 penetrates through the fixing frame 2 and extends to the inside of the keyboard 1 to be attached to the socket 6, the plug 302 is plugged into the socket 6, the keyboard 1 can be conveniently connected with the external device, the keyboard 1 is convenient to control the external device, and the keyboard 1 is also convenient to be cut off from the external device.

Referring to fig. 3 and 4, the top end and the bottom end of the limiting plate 201 are both provided with a fastening groove 202, the first sideboard 101 and the second sideboard 102 are fastened and connected with the limiting plate 201 through different fastening grooves 202, the top ends of the first sideboard 101 and the second sideboard 102 are all flush with the top end of the keyboard 1, the thickness of the second sideboard 102 is smaller than that of the first sideboard 101, the bottom end of the first sideboard 101 is connected with the airbag 103 and the buffer plate 104, when the first sideboard 101 is fastened with the outside of the limiting plate 201, the airbag 103 and the buffer plate 104 are located between the first sideboard 101 and the limiting plate 201, and at this time, the airbag 103 is squeezed to shrink the airbag 103, after the keyboard 1 is rotated, when the first sideboard 101 is fastened with the limiting plate 201, the rotational impact force of the keyboard 1 is absorbed by the airbag 103, the damage to the keyboard 1 is reduced, and after the keyboard 1 is rotated and the airbag 103 collides with the limiting plate, the keyboard 201, the impact force is converted into a torque that the keyboard 1 repeatedly moves, the outside of the keyboard 1 is slightly flapped, and the dust outside of the keyboard 1 is conveniently cleaned.

The working principle of the invention is as follows: when the keyboard is used, firstly, the keyboard is installed in the fixed frame 2, and is rotationally connected with the fixed frame 2 through the two groups of rotating shafts 5, so that after the second side plate 102 is clamped with the clamping groove 202 above the limiting plate 201, the clamping plate 3 is pushed to move, the clamping plate 3 carries out limiting clamping on the second side plate 102 and the limiting plate 201, meanwhile, the plug connector 302 is inserted into the keyboard 1, and the plug connector 302 is plugged with the socket 6, so that the keyboard 1 is connected with external equipment, and the keyboard 1 can control the external equipment;

when the keyboard 1 is used, the keys 4 are squeezed by fingers, the keys 4 are inserted into the base 8 through the inserting columns 9, the springs and the control unit in the base 8 are started, the control unit is fixed with the circuit board 7, signals are sent out from the circuit board 7 and are transmitted into external equipment through wires, the socket 6 and the inserting connector 302, the external equipment is adjusted and controlled, when the keys 4 are squeezed, the keys 4 can move downwards in the sealed cavity 1001 to squeeze gas in the sealed cavity, the gas is sprayed out from the gas spraying net 401 outside the keys 4, impurity dust accumulated outside the keys 4 is removed, the impurity dust is far away from the keys 4, the keys 4 are cleaned, the cleanliness of the keys 4 is improved, secondly, due to the existence of the sealed cavity 1001, the pressure required when the keys 4 are squeezed is increased, the problem caused by mistakenly touching the keys 4 in the use process of the keyboard 1 can be effectively avoided, the operation of the external equipment is caused, the use safety is improved, and the fault tolerance rate is increased;

when the external equipment runs stably or stops, the keyboard 1 needs to be locked, at this time, the clamping plate 3 is pushed, the clamping plate 3 leaves from the upper side of the second sideboard 102, the limit on the keyboard 1 is removed, the plug connector 302 is pulled out of the socket 6 at this time, the connection between the keyboard 1 and the external equipment is cut off, then the keyboard 1 is pushed to rotate, the keyboard 1 rotates around the rotating shaft 5, the keyboard 1 faces downwards until the first sideboard 101 is attached to the limiting plate 201, the multiple groups of keys 4 face downwards at the same time, the possibility that the equipment runs and is damaged due to the fact that the external equipment mistakenly touches the keyboard 1 when not needing to be controlled can be effectively avoided, the multiple groups of keys 4 face downwards at this time, dust can be reduced to be accumulated outside the keys 4, the cleanliness of the keys 4 is further improved, in the rotating process, the first sideboard 101 is attached to the limiting plate 201 through the air bags 103, impact force when the keyboard 1 rotates and the limiting plate 201 is attached can be reduced, and damage to the keyboard 1 is reduced;

meanwhile, when the keyboard 1 is rotated, the movable head 1301 is also rotated under the driving of the rotating shaft 5, the movable head 1301 is attached to the extrusion block 12, under the pushing of the inclined surface on the outer side of the movable head 1301, the movable head 1301 moves towards the inside of the rotating shaft 5, so that the movable frame 13 is pushed to move inside the keyboard 1, the movable frame 13 drives the multiple groups of movable rods 11 connected with the inner wall to move synchronously, the movable rods 11 are connected with extrusion columns 1101 on the side surfaces of the insertion columns 9, inclined surface grooves 901 matched with the extrusion columns 1101 are formed in the inner walls of the insertion columns 9, the extrusion columns 1101 can be inserted into the inclined surface grooves 901 in the moving process, so that the insertion columns 9 are pushed to be inserted into the base 8, so that all groups of movable keys 4 enter the sealed cavity 1001 at the same time, ash is synchronously removed from the outer sides of the multiple groups of keys 4, after the keyboard 1 is completely rotated and turned over, the insertion columns 9 and the keys 4 are also driven to the lowest ends in the sealed cavity 1001 at the same time, most of the multiple groups of air injection nets 401 outside of the keys 1001 enter the sealed cavity 1001, thereby isolating the sealed cavity 1001 and improving the probability of dust entering the sealed cavity 1001 after the keyboard 1 is completely, and the keyboard 1, and the cleanness of the sealed cavity 1001 is improved.

Although embodiments of the present invention have been shown and described, it is intended that the present invention should not be limited thereto, that the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, and that modifications, substitutions, variations or the like, which are not inventive and may be made by those skilled in the art without departing from the principle and spirit of the present invention and without departing from the scope of the claims.

Claims

1. Keypad device, including keyboard (1) and mount (2), block board (3) are installed to the top of mount (2), the side-mounting of keyboard (1) has multiunit button (4), its characterized in that: the inside below that is located each group's button (4) of keyboard (1) all is connected with response mechanism, and encircles response mechanism and seted up sealed storehouse (10), sealed chamber (1001) have been seted up to the inside of sealed storehouse (10), and response mechanism is located the inside of sealed chamber (1001), and the response mechanism bottom is connected with circuit board (7), circuit board (7) are connected with socket (6) through the wire, the bottom coupling mechanism of block board (3), and circuit board (7) switch-on with coupling mechanism through socket (6), button (4) inner wall connection has jet-propelled net (401), and jet-propelled net (401) are located the top of sealed storehouse (10), the both sides of keyboard (1) are connected with pivot (5), keyboard (1) rotate with mount (2) through pivot (5) and are connected, the both ends of keyboard (1) are connected with first sideboard (101) and second sideboard (102) respectively, the side of mount (2) is connected with limiting plate (201), keyboard (1) are through first sideboard (101) and second sideboard (102) and spacing block (201).

2. The keypad apparatus of claim 1, wherein: response mechanism includes base (8), inserts post (9), base (8) and circuit board (7) fixed connection, the inside of base (8) includes: return spring and response element, and insert the inside and return spring swing joint that the bottom of post (9) extends to base (8).

3. The keypad apparatus of claim 1, wherein: the connecting mechanism comprises a sliding rod (301) and a plug connector (302), the plug connector (302) is located inside the sliding rod (301), one side of the sliding rod (301) is connected with a lead (303), the plug connector (302) is connected with external equipment through the sliding rod (301), the sliding rod (301) penetrates through the fixing frame (2) and extends to the inside of the keyboard (1) to be attached to the socket (6), and the plug connector (302) is connected with the socket (6) in an inserting mode.

4. The keypad apparatus of claim 1, wherein: the utility model discloses a keyboard, including keyboard (1), the internal connection of keyboard (1) has moving frame (13), and the both sides of moving frame (13) and the laminating of keyboard (1) inner wall, the both sides of moving frame (13) extend to each group pivot (5) in respectively and are connected with movable head (1301) and pogo pin (1302), the tip of activity head (1301) extends to the outside of pivot (5) and is located the inside cavity of mount (2), and the tip of activity head (1301) is the circular cone type, the inside cavity internally mounted of mount (2) has extrusion piece (12), button (4) time spent activity head (1301) do not contact with extrusion piece (12) when up, thereby extrusion piece (12) extrusion activity head (1301) when button (4) down promote moving frame (13) and move in keyboard (1) inside, pogo pin (1302) are located the pivot (5) inside of keeping away from activity head (1301), and pogo pin (1302) are through the spring in the outside and pivot (5) swing joint.

5. The keypad apparatus of claim 4, wherein: moving frame (13) internal connection has multiunit carriage release lever (11), and every group carriage release lever (11) all runs through sealed storehouse (10) and extends to the side that every group inserted post (9) and be connected with squeeze column (1101), insert the side that post (9) are close to carriage release lever (11) and offer with squeeze column (1101) assorted inclined plane fluting (901), squeeze column (1101) insert inside inclined plane fluting (901) and promote to insert post (9) and move when activity head (1301) drive carriage release lever (11) remove.

6. The keypad apparatus of claim 1, wherein: the clamping grooves (202) are formed in the top end and the bottom end of the limiting plate (201), the first side plate (101) and the second side plate (102) are connected with the limiting plate (201) in a clamping mode through the different clamping grooves (202), the top ends of the first side plate (101) and the second side plate (102) are flush with the top end of the keyboard (1), and the thickness of the second side plate (102) is smaller than that of the first side plate (101).

7. The keypad apparatus of claim 6, wherein: the bottom of first sideboard (101) is connected with gasbag (103) and buffer board (104), when first sideboard (101) and limiting plate (201) outside laminating, gasbag (103) and buffer board (104) are located between first sideboard (101) and limiting plate (201), and extrude gasbag (103) this moment and make gasbag (103) shrink.