CN110940502B

CN110940502B - Device applied to computer keyboard service life test

Info

Publication number: CN110940502B
Application number: CN201911089261.4A
Authority: CN
Inventors: 余清; 余芳; 张猛
Original assignee: Xinyang Vocational and Technical College
Current assignee: Xinyang Vocational and Technical College
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2021-07-20
Anticipated expiration: 2039-11-08
Also published as: CN110940502A

Abstract

The utility model provides a be applied to device that calculates key dish life-span test, the power distribution box comprises a box body, the front side and the rear end opening of box, the box body of control can be removed to the top movable mounting of box, the right side opening of box body, the jack is seted up to one side of box body bottom side, movable mounting only can reciprocate the inserted bar in the jack, the front side of inserted bar in the box body is equipped with the cross axle, the left end of cross axle passes through the damping bearing with the inner wall of box and rotates to be connected, the coaxial first gear of installation is rotated through the damping bearing in the periphery of cross axle, the bar tooth's socket is seted up to the front side of inserted bar, first gear and the meshing cooperation of bar tooth's socket. The invention has simple structure and ingenious conception, can detect and judge whether the key can be normally reset by utilizing a pure mechanical structure, controls the start and stop of the detection device, and can cut off the power in time when the key cannot be normally reset, thereby avoiding the invalid operation of the detection device, saving the power consumption, meeting the market demand and being suitable for popularization.

Description

Device applied to computer keyboard service life test

Technical Field

The invention belongs to the field of keyboard test detection devices, and particularly relates to a device applied to computer keyboard service life testing.

Background

Traditional button life-span testing machine is through constantly knocking the keyboard button, test button constantly strikes unable normal the reseing after many times less, current button life-span testing machine general structure is complicated, it is used for detecting and judges whether the button can normally reset to use a large amount of electronic device, lead to the structure complicated, be difficult to the maintenance, and electronic device fragile, the reliability is low, and simple mechanical structure can't effectively detect and judge whether the button can normally reset, and the labour that the manual work detected the consumption is too huge, and the count is inaccurate, be difficult to satisfy the actual demand, so, we have invented a device of being applied to computer keyboard life-span test.

Disclosure of Invention

The invention provides a device applied to a computer keyboard service life test, which is used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

a device applied to testing the service life of a computer keyboard comprises a box body, wherein the front side and the rear side of the box body are opened, the top of the box body is movably provided with a box body which can be adjusted in a left-right moving mode, the right side of the box body is opened, one side of the bottom side of the box body is provided with a jack, an inserted bar which can only move up and down is movably arranged in the jack, the front side of the inserted bar in the box body is provided with a transverse shaft, the left end of the transverse shaft is rotatably connected with the inner wall of the box body through a damping bearing, the periphery of the transverse shaft is rotatably provided with a coaxial first gear through the damping bearing, the front side of the inserted bar is provided with a strip-shaped tooth socket, the first gear is meshed with the strip-shaped tooth socket, the bottom of the box body is provided with a mechanical counter, an input shaft of the mechanical counter is in transmission connection with the transverse shaft, the middle part and the top part on one side of the inserted bar are respectively provided with a strip-shaped rack, a motor is fixedly arranged in the box body, the front end of a motor rotating shaft is fixedly provided with a special-shaped gear, the special-shaped gear which can be meshed with the strip-shaped rack on the lower side, one side of the bar-shaped rack on the upper side is provided with two parallel rotating shafts, two ends of each rotating shaft are respectively rotatably connected with the inner wall of the box body through bearings, one end of one rotating shaft is rotatably connected with the inner wall of the box body through a damping bearing, the rear side of the periphery of the rotating shaft on the left side and the front side of the periphery of the rotating shaft on the right side are sequentially and rotatably provided with a second gear and a third gear through the damping bearing, the middle part of the periphery of the rotating shaft is respectively and fixedly provided with a coaxial fourth gear, the two fourth gears are mutually meshed and matched, the second gear is meshed and matched with the bar-shaped rack on the upper side, one side of the third gear is provided with a vertical strip-shaped rack, the third gear is meshed and matched with the strip-shaped rack, one side of the strip-shaped rack is fixedly connected with one end of a transverse rod, the transverse rod is fixedly connected with the upper end of a telescopic rod, the lower end of the telescopic rod is fixedly connected with the box body, a supporting rod fixedly connected with the box body is arranged above the transverse rod, the lower extreme fixed mounting button switch of bracing piece, the left side fixed mounting battery of box, battery, button switch pass through the wire and establish ties with the motor.

The device for testing the service life of the computer keyboard is characterized in that the middle of the right end of the transverse shaft is provided with the hexagon socket hole, the hexagon socket inserted bar is movably installed in the hexagon socket hole and can only move left and right along the hexagon socket hole, the right end of the hexagon inserted bar is fixedly connected with the input shaft of the mechanical counter, the bottom of the box body is provided with the inverted T-shaped sliding groove, the inverted T-shaped sliding groove is movably installed with the inverted T-shaped sliding block, the inverted T-shaped sliding block can only slide left and right along the inverted T-shaped sliding groove, the right side of the inverted T-shaped sliding groove is fixedly connected with the right side of the inverted T-shaped sliding block through the spring, and the top side of the inverted T-shaped sliding block is fixedly connected with the bottom side of the mechanical counter.

The device for testing the service life of the computer keyboard is characterized in that the top side of the box body is provided with the strip-shaped through groove, the vertical screw rod is movably mounted in the strip-shaped through groove, the lower end of the screw rod is fixedly connected with the top side of the box body, the nut is mounted on the periphery of the screw rod in a threaded manner, and the bottom side of the nut is in contact fit with the top side of the box body.

The device for testing the service life of the computer keyboard comprises a plurality of jacks, wherein each jack is a square hole, each inserted rod is a square rod, the side surface of each inserted rod is in sliding contact fit with the inner wall of the corresponding jack, the lower part of the periphery of each inserted rod is provided with an external thread, the lower part of the periphery of each inserted rod is provided with an internal threaded pipe in a threaded mode, and the lower end of each internal threaded pipe is fixedly provided with a pressing head.

The device for testing the service life of the computer keyboard is characterized in that a pressing plate is arranged on one side of the supporting rod, one side of the pressing plate is fixedly connected with the periphery of the supporting rod through a plurality of small springs, and the other side of the pressing plate is in close contact fit with the side face of the strip-shaped rack.

According to the device applied to the computer keyboard service life test, the right side of the box body is provided with the threaded through hole, the threaded through hole is internally threaded with the bolt, the left end of the bolt is rotatably connected with the right side of the clamping plate through the bearing, and the bottom side of the clamping plate is in sliding contact fit with the bottom of the box body.

The invention has the advantages that: the invention has simple structure and ingenious conception, can detect and judge whether the key can be normally reset by utilizing a pure mechanical structure, controls the start and stop of the detection device, and can cut off the power in time when the key cannot be normally reset, thereby avoiding the invalid operation of the detection device, saving the power consumption, meeting the market demand and being suitable for popularization. When the invention is used, firstly, the computer keyboard is placed at the bottom of the box body, the keys are upward, the lower end of the inserted link is positioned above the keys to be tested by adjusting the position of the box body and the position of the adjusting keyboard left and right, and when the upper end of the inserted link is contacted and matched with the top wall of the box body, the lower end of the inserted link is contacted and matched with the top side of the keys, at the moment, a backing plate or paper at the bottom of the keyboard can be arranged to fix the position of the keyboard, then the button switch is pressed to ensure that the storage battery supplies power to the motor, the rotating shaft of the motor drives the special-shaped gear to rotate anticlockwise, when the special-shaped gear is meshed and matched with the strip-shaped rack at the lower side, the special-shaped gear drives the inserted link to move downwards through the strip-shaped rack at the lower end of the inserted link, the inserted link drives the first gear to rotate through the strip-shaped tooth grooves, the first gear drives the transverse shaft to rotate through the corresponding damping bearings, and the transverse shaft drives the input shaft of the mechanical counter to rotate, when the inserted bar descends to the lowest position, the input shaft of the mechanical counter rotates for a circle to finish one counting, meanwhile, the inserted bar drives the second gear to rotate anticlockwise through the strip-shaped rack on the upper side, the second gear drives the left cross shaft to rotate through the corresponding damping bearing, the left cross shaft drives the right cross shaft to rotate through the meshing transmission of the two fourth gears, the right cross shaft drives the third gear to rotate clockwise through the damping bearing, the third gear drives the strip-shaped rack and the cross rod to move downwards, the telescopic rod is compressed until the special-shaped gear is meshed with the upper end of the strip-shaped rack on the lower side, the inserted bar descends to the lowest position, one-time key pressing is finished, the special-shaped gear continues to rotate anticlockwise until the special-shaped gear is meshed with the strip-shaped rack, the special-shaped gear is separated from the strip-shaped rack on the lower side, the downward pressure of the special-shaped gear on the inserted bar is removed, and the inserted bar moves upwards to reset under the action of the key resetting thrust force, the inserted bar drives the first gear to rotate through the strip-shaped tooth socket, at the moment, the first gear cannot drive the transverse shaft to rotate, the upper end of the inserted bar is in contact fit with the top of the box body again, the inserted bar moves upwards to drive the second gear to rotate clockwise through the strip-shaped rack on the upper side, at the moment, the second gear cannot drive the transverse shaft on the left side to rotate clockwise, the special-shaped gear drives the strip-shaped rack and the transverse rod to move upwards, the telescopic rod is stretched, the strip-shaped rack drives the third gear to rotate anticlockwise, the third gear cannot drive the transverse shaft on the right side to rotate anticlockwise, the special-shaped gear is separated from the strip-shaped rack until the special-shaped rack is reset and stops moving upwards, the special-shaped gear is meshed fit with the strip-shaped rack on the lower side again, the inserted bar moves downwards to press the keys, the processes are continuously repeated, continuous pressing of the keys is realized, and meanwhile, the mechanical counter records the pressing times, when the button resets too slowly or can't reset, the upper end of inserted bar does not have the contact cooperation with the top of box body, the special-shaped gear just cooperates with the bar rack meshing of downside, thereby lead to the elongated shape rack descending distance of inserted bar decline in-process to shorten, and the distance that the elongated shape rack upwards moved is inconvenient, thereby lead to the ascending skew of elongated shape rack, make horizontal pole collision button switch, the battery stops to supply power for the motor, stop pressing the button, numerical value through the mechanical counter demonstration, just can derive, the number of times of pressing the button when the button resets to become invalid.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention; FIG. 2 is an enlarged view of section I of FIG. 1; fig. 3 is an enlarged view of the view from the direction a of fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A device applied to the service life test of a computer keyboard comprises a box body 1, wherein the front side and the rear side of the box body 1 are open, a box body 2 which can be adjusted in a left-right moving mode is movably mounted at the top of the box body 1, the right side of the box body 2 is open, a jack 3 is formed in one side of the bottom side of the box body 2, an inserted rod 4 which can only move up and down is movably mounted in the jack 3, a transverse shaft 5 is arranged on the front side of the inserted rod 4 in the box body 2, the left end of the transverse shaft 5 is rotatably connected with the inner wall of the box body 1 through a damping bearing, a coaxial first gear 6 is rotatably mounted on the periphery of the transverse shaft 5 through the damping bearing, a strip-shaped tooth socket 7 is formed in the front side of the inserted rod 4, the first gear 6 is meshed with the strip-shaped tooth socket 7, a mechanical counter 8 is arranged at the bottom of the box body 2, the mechanical counter 8 is a mechanical counter which can return to zero through one key, and the input shaft of the mechanical counter 8 is in transmission connection with the transverse shaft 5, the middle part and the top part of one side of the inserted link 4 are respectively provided with a strip rack 9, a motor 10 is fixedly arranged in the box body 2, a special-shaped gear 11 is fixedly arranged at the front end of a rotating shaft of the motor 10, the special-shaped gear 11 can be meshed and matched with the strip rack 9 at the lower side, two parallel rotating shafts 12 are arranged at one side of the strip rack 9 at the upper side, two ends of the rotating shaft 12 are respectively and rotatably connected with the inner wall of the box body 1 through bearings, one end of one rotating shaft 12 is rotatably connected with the inner wall of the box body 1 through a damping bearing, a second gear 13 and a third gear 14 are rotatably arranged at the rear side of the periphery of the rotating shaft 12 at the left side and the front side of the periphery of the rotating shaft 12 at the right side through the damping bearing, coaxial fourth gears 15 are respectively and fixedly arranged at the middle part of the periphery of the rotating shaft 12, the two fourth gears 15 are meshed and matched with each other, the second gear 13 is meshed and matched with the strip rack 9 at the upper side, one side of the third gear 14 is provided with a vertical strip rack 16, third gear 14 and the cooperation of rectangular shape rack 16 meshing, one side fixed connection horizontal pole 17's of rectangular shape rack 16 one end, the other end of horizontal pole 17 is located the opening on 2 right sides of box body, 18 upper ends of horizontal pole 17 fixed connection telescopic link, the upper end of telescopic link 18 can't the downstream under the effect of horizontal pole 17 and the self gravity of

rectangular shape rack

16, 18 lower extremes of telescopic link and box 1 fixed connection, the top of horizontal pole 17 is equipped with the bracing piece 19 with 1 fixed connection of box, the lower extreme fixed mounting button switch 20 of bracing piece 19, the left side fixed mounting battery 21 of box 1, the battery 21, button switch 20 passes through the wire with motor 10 and establishes ties. The invention has simple structure and ingenious conception, can detect and judge whether the key can be normally reset by utilizing a pure mechanical structure, controls the start and stop of the detection device, and can cut off the power in time when the key cannot be normally reset, thereby avoiding the invalid operation of the detection device, saving the power consumption, meeting the market demand and being suitable for popularization. When the invention is used, firstly, a computer keyboard is placed at the bottom of a box body 1, keys are upward, the lower end of an inserted link 4 is positioned above the keys to be tested by adjusting the position of a box body 2 and the position of an adjusting keyboard left and right, and when the upper end of the inserted link 4 is contacted and matched with the top wall of the box body 2, the lower end of the inserted link 4 is contacted and matched with the top side of the keys, at the moment, a backing plate or paper at the bottom of the keyboard can be arranged to fix the position of the keyboard, then a button switch 20 is pressed, a storage battery 21 supplies power to a motor 10, a rotating shaft of the motor 10 drives a special-shaped gear 11 to rotate anticlockwise, when the special-shaped gear 11 is meshed and matched with a strip-shaped rack 9 at the lower side, the special-shaped gear 11 drives the inserted link 4 to move downwards through the strip-shaped rack 9 at the lower side, the lower end of the inserted link 4 presses the keys downwards, meanwhile, the inserted link 4 drives a first gear 6 to rotate through a strip-shaped tooth socket 7, and the first gear 6 drives a transverse shaft 5 to rotate through a corresponding damping bearing, the horizontal shaft 5 drives the input shaft of the mechanical counter 8 to rotate until the inserted link 4 descends to the lowest position, the input shaft of the mechanical counter 8 rotates for a circle to complete one counting, meanwhile, the inserted link 4 drives the second gear 13 to rotate anticlockwise through the strip-shaped rack 9 on the upper side, the second gear 13 drives the horizontal shaft 12 on the left side to rotate through the corresponding damping bearing, the horizontal shaft 12 on the left side drives the horizontal shaft 12 on the right side to rotate through the meshing transmission of the two fourth gears 15, the horizontal shaft 12 on the right side drives the third gear 14 to rotate clockwise through the damping bearing, the third gear 14 drives the strip-shaped rack 16 and the cross bar 17 to move downwards, the telescopic link 18 is compressed until the special-shaped gear 11 is meshed with the upper end of the strip-shaped rack 9 on the lower side, the inserted link 4 descends to the lowest position to complete one-time pressing of a key, the special-shaped gear 11 continues to rotate anticlockwise until the special-shaped gear 11 is meshed with the strip-shaped rack 16, the special-shaped gear 11 is separated from the strip-shaped rack 9 at the lower side, the downward pressure of the special-shaped gear 11 on the inserted link 4 is removed, the inserted link 4 moves upwards to reset under the action of the keyboard key resetting thrust, the inserted link 4 drives the first gear 6 to rotate through the strip-shaped tooth socket 7, at the moment, the first gear 6 cannot drive the cross shaft 5 to rotate, the upper end of the inserted link 4 is in contact fit with the top of the box body 2 again, the inserted link 4 moves upwards to drive the second gear 13 to rotate clockwise through the strip-shaped rack 9 at the upper side, at the moment, the second gear 13 cannot drive the cross shaft 12 at the left side to rotate clockwise, the special-shaped gear 11 drives the strip-shaped rack 16 and the cross shaft 17 to move upwards, the telescopic rod 18 is stretched, the strip-shaped rack 16 drives the third gear 14 to rotate anticlockwise, the third gear 14 cannot drive the cross shaft 12 at the right side to rotate anticlockwise, the special-shaped gear 11 is separated from the strip-shaped rack 16, and the strip-shaped rack 16 finishes resetting and stops moving upwards, the special-shaped gear 11 is meshed with the strip-shaped rack 9 on the lower side again to be matched, the inserting rod 4 is made to move downwards to press the keys, the process is continuously and repeatedly carried out, continuous pressing of the keys is achieved, meanwhile, the mechanical counter 8 records the pressing times, when the keys are too slow to reset or cannot be reset, the upper end of the inserting rod 4 is not in contact fit with the top of the box body 2, the special-shaped gear 11 is meshed with the strip-shaped rack 9 on the lower side to be matched, the descending distance of the strip-shaped rack 16 in the descending process of the inserting rod 4 is shortened, the ascending distance of the strip-shaped rack 16 is inconvenient, the strip-shaped rack 16 is made to deflect upwards, the transverse rod 17 is made to collide with the button switch 20, the storage battery 21 stops supplying power to the motor 10, the keys are stopped to be pressed, the numerical values displayed through the mechanical counter 8 can be obtained, and the pressing times of the keys when the keys are reset to be invalid are pressed.

Specifically, as shown in the figure, in the embodiment, the center of the right end of the transverse shaft 5 is provided with the hexagon socket 22, the hexagon socket inserted bar 23 is movably installed in the hexagon socket 22, the hexagon socket inserted bar 23 can only move left and right along the hexagon socket 22, the right end of the hexagon socket inserted bar 23 is fixedly connected with the input shaft of the mechanical counter 8, the bottom of the box body 1 is provided with the inverted T-shaped chute 24, the inverted T-shaped slide block 25 is movably installed in the inverted T-shaped chute 24, the inverted T-shaped slide block 25 can only slide left and right along the inverted T-shaped chute 24, the right side of the inverted T-shaped chute 24 is fixedly connected with the right side of the inverted T-shaped slide block 25 through the spring 26, and the top side of the inverted T-shaped slide block 25 is fixedly connected with the bottom side of the mechanical counter 8. When the mechanical counter 8 needs to be reset to zero, the mechanical counter 8 is pulled rightwards, the mechanical counter 8 drives the inverted T-shaped sliding block 25 to slide rightwards along the inverted T-shaped sliding groove 24, the spring 26 is compressed, the inner hexagonal inserting rod 23 is pulled out from the inner hexagonal hole 22, the reset key of the mechanical counter 8 is pressed again to enable the counting of the mechanical counter 8 to be reset to zero, then the mechanical counter 8 is loosened, the inverted T-shaped sliding block 25 drives the mechanical counter 8 to move leftwards under the elastic thrust action of the spring 26, and the inner hexagonal inserting rod 23 is inserted into the inner hexagonal hole 22 again.

Specifically, as shown in the figure, the top side of the box body 1 described in this embodiment is provided with a strip-shaped through groove 27, a vertical screw rod 28 is movably mounted in the strip-shaped through groove 27, the lower end of the screw rod 28 is fixedly connected with the top side of the box body 2, a nut 29 is mounted on the periphery of the screw rod 28 in a threaded manner, and the bottom side of the nut 29 is in contact fit with the top side of the box body 1. The nut 29 is screwed down, so that the top wall of the box body 1 is clamped between the bottom side of the nut 29 and the top side of the box body 2, the box body 2 is fixed, when the box body 2 is adjusted leftwards and rightwards, the nut 29 is unscrewed, the screw rod 28 moves leftwards and rightwards along the strip-shaped through groove 27, then the nut 29 is screwed down, and the left and right adjustment of the position of the box body 2 is realized.

Further, as shown in the figure, the jack 3 described in this embodiment is a square hole, the inserted link 4 is a square rod, the side of the inserted link 4 is in sliding contact with the inner wall of the corresponding jack 3, the outer thread is formed on the lower part of the periphery of the inserted link 4, the inner threaded pipe 30 is installed on the lower part of the periphery of the inserted link 4, and the pressing head 31 is fixedly installed on the lower end of the inner threaded pipe 30. The inserted link 4 can only move up and down in the jack 3, the internal thread tube 30 is screwed, and the height of the pressing head can be adjusted up and down, so that the device can be suitable for checking keyboards with different thicknesses.

Furthermore, as shown in the figure, a pressing plate 32 is disposed on one side of the supporting rod 19 according to the present embodiment, one side of the pressing plate 32 is fixedly connected to the periphery of the supporting rod 19 through a plurality of small springs 33, and the other side of the pressing plate 32 is in close contact with and fits with the side surface of the elongated rack 16. The pressing plate 32 can generate leftward thrust on the elongated rack 16, so that the resistance of the elongated rack 16 to move up and down is increased, and the elongated rack 16 is prevented from moving under the action of self gravity.

Furthermore, as shown in the drawings, a threaded through hole 34 is formed in the right side of the box body 1 according to the embodiment, a bolt 35 is installed in the threaded through hole 34, the left end of the bolt 35 is rotatably connected to the right side of the clamping plate 36 through a bearing, and the bottom side of the clamping plate 36 is in sliding contact with the bottom of the box body 1. The keyboard is placed in the box body 1, the bolt 35 is screwed, the clamping plate 36 moves leftwards, the clamping plate 36 can generate a rightward thrust to the keyboard, and the keyboard is clamped and fixed.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A device for testing the service life of a computer keyboard is characterized in that: comprises a box body (1), the front side and the rear side of the box body (1) are open, the top of the box body (1) is movably provided with a box body (2) which can be adjusted leftwards and rightwards, the right side of the box body (2) is open, one side of the bottom side of the box body (2) is provided with a jack (3), the jack (3) is internally movably provided with an inserted bar (4) which can only move upwards and downwards, the front side of the inserted bar (4) in the box body (2) is provided with a transverse shaft (5), the left end of the transverse shaft (5) is rotatably connected with the inner wall of the box body (1) through a damping bearing, the periphery of the transverse shaft (5) is rotatably provided with a coaxial first gear (6) through the damping bearing, the front side of the inserted bar (4) is provided with a strip-shaped tooth socket (7), the first gear (6) is meshed with the strip-shaped tooth socket (7), the bottom of the box body (2) is provided with a mechanical counter (8), the input shaft of the mechanical counter (8) is in transmission connection with the transverse shaft (5), the middle part and the top part of one side of the inserted rod (4) are respectively provided with a strip rack (9), a motor (10) is fixedly arranged in the box body (2), the front end of a rotating shaft of the motor (10) is fixedly provided with a special-shaped gear (11), the special-shaped gear (11) can be meshed and matched with the strip rack (9) at the lower side, one side of the strip rack (9) at the upper side is provided with two parallel rotating shafts (12), two ends of the rotating shafts (12) are respectively and rotatably connected with the inner wall of the box body (1) through bearings, one end of one rotating shaft (12) is rotatably connected with the inner wall of the box body (1) through a damping bearing, the rear side of the periphery of the rotating shaft (12) at the left side and the front side of the periphery of the rotating shaft (12) at the right side are respectively and rotatably provided with a second gear (13) and a third gear (14) through the damping bearing, the middle part of the periphery of the rotating shaft (12) is respectively and fixedly provided with a coaxial fourth gear (15), and the two fourth gears (15) are mutually meshed and matched, second gear (13) and the meshing cooperation of bar rack (9) of upside, one side of third gear (14) is equipped with vertical rectangular shape rack (16), third gear (14) and rectangular shape rack (16) meshing cooperation, the one end of one side fixed connection horizontal pole (17) of rectangular shape rack (16), horizontal pole (17) fixed connection telescopic link (18) upper end, telescopic link (18) lower extreme and box (1) fixed connection, the top of horizontal pole (17) is equipped with bracing piece (19) with box (1) fixed connection, the lower extreme fixed mounting button switch (20) of bracing piece (19), left side fixed mounting battery (21) of box (1), battery (21), button switch (20) establish ties through the wire with motor (10).

2. The device for testing the keyboard life span of a computer according to claim 1, wherein: the middle of the right end of the transverse shaft (5) is provided with an inner hexagonal hole (22), an inner hexagonal inserted bar (23) is movably installed in the inner hexagonal hole (22), the inner hexagonal inserted bar (23) can only move left and right along the inner hexagonal hole (22), the right end of the inner hexagonal inserted bar (23) is fixedly connected with an input shaft of the mechanical counter (8), the bottom of the box body (1) is provided with an inverted T-shaped sliding groove (24), an inverted T-shaped sliding block (25) is movably installed in the inverted T-shaped sliding groove (24), the inverted T-shaped sliding block (25) can only slide left and right along the inverted T-shaped sliding groove (24), the right side of the inverted T-shaped sliding groove (24) is fixedly connected with the right side of the inverted T-shaped sliding block (25) through a spring (26), and the top side of the inverted T-shaped sliding block (25) is fixedly connected with the bottom side of the mechanical counter (8).

3. The device for testing the keyboard life span of a computer according to claim 1, wherein: the top side of box (1) set up the strip and pass through groove (27), the strip passes through vertical lead screw (28) of movable mounting in groove (27), the lower extreme of lead screw (28) and the top side fixed connection of box body (2), the periphery screw thread mounting nut (29) of lead screw (28), the bottom side of nut (29) and the top side contact cooperation of box (1).

4. The device for testing the keyboard life span of a computer according to claim 1, wherein: jack (3) be the quad slit, inserted bar (4) are square pole, the side of inserted bar (4) and the inner wall sliding contact cooperation of corresponding jack (3), the external screw thread is seted up to the lower part of inserted bar (4) periphery, the lower part screw thread installation internal thread pipe (30) of inserted bar (4) periphery, the lower extreme fixed mounting of internal thread pipe (30) is according to pressure head (31).

5. The device for testing the keyboard life span of a computer according to claim 1, wherein: one side of the supporting rod (19) is provided with a pressing plate (32), one side of the pressing plate (32) is fixedly connected with the periphery of the supporting rod (19) through a plurality of small springs (33), and the other side of the pressing plate (32) is in close contact fit with the side face of the strip-shaped rack (16).

6. The device for testing the keyboard life span of a computer according to claim 1, wherein: the right side of the box body (1) is provided with a thread through hole (34), a bolt (35) is installed in the thread through hole (34), the left end of the bolt (35) is rotatably connected with the right side of the clamping plate (36) through a bearing, and the bottom side of the clamping plate (36) is matched with the bottom of the box body (1) in a sliding contact mode.