CN217901816U - Function detection equipment for key board - Google Patents

Abstract

The utility model discloses a function check out test set of keypad uses in electronic test equipment field, and its technical scheme main points are: the PCB detection device comprises a workbench, wherein a PCB detection board is fixed on the workbench, the upper surface of the PCB detection board is provided with a detection terminal, and the detection terminal is connected with a conductive bar at the bottom of a key board; a first bearing plate vertically slides on the workbench, a limiting plate is fixed on one side of the first bearing plate close to the PCB detection plate, and the limiting plate is of a frame structure with the middle part being in profile modeling with the key plate; a lower pressing assembly used for keeping the upper surface of the key board smooth is vertically connected to the first bearing board in a sliding mode, and a trigger assembly used for pressing keys on the key board is arranged on the lower pressing assembly; has the technical effects that: the keyboard plate is prevented from being damaged during detection, and the detection accuracy is improved.

Description

Function detection equipment for key board

Technical Field

The utility model relates to an electronic test equipment field, in particular to function test equipment of keypad.

Background

Along with the increasingly expanded application field of electronic technology, the electronic products are continuously popularized in daily life of people, and the requirements of the electronic products are increasingly increased; most electronic devices are provided with a keypad, such as a computer keyboard, a function key of a television, a function key of a game console and the like, the keypad is installed inside the electronic devices, and the quality of the keypad also directly affects the quality of electronic products.

In the existing key board, the upper surface of the key board is a capacitive screen, a key module is arranged on the capacitive screen, a connector for connecting the key module is arranged at the bottom of the key board, a conductive strip is connected to the connector in an adhesive manner, and the conductive strip is made of conductive cotton; when detecting the key board, the function of each key of the key board needs to be detected; the existing key detection equipment uses a probe for detection, the conductivity of the probe influences the accuracy of detection, the hardness of the probe is high, and the surface of a pressing plate is easily damaged when the key plate is pressed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a function check out test set of keypad, the keypad is impaired when its advantage prevents to detect to improve the accuracy that detects.

The above technical purpose of the present invention can be achieved by the following technical solutions: the key board comprises a workbench, wherein a PCB detection board is fixed on the workbench, the upper surface of the PCB detection board is provided with a detection terminal, and the detection terminal is connected with a conductive bar at the bottom of the key board;

a first bearing plate vertically slides on the workbench, a limiting plate is fixed on one side of the first bearing plate close to the PCB detection plate, and the limiting plate is of a frame structure with the middle part thereof being in profile modeling with the key plate; the first bearing plate is connected with a smooth pressing assembly used for keeping the upper surface of the key board in a vertical sliding mode, and a trigger assembly used for pressing keys on the key board is arranged on the pressing assembly.

Through the technical scheme, the detection terminal is connected with the conductive bar at the bottom of the key board, so that the PCB detection board is connected with the key board and the display screen, the current and the resistance of the keys on the key board are fed back to the display screen, and the detection conditions of the keys are observed more visually; the first bearing plate bears the pressing assembly and the trigger assembly; when the functions of the key board are detected, the first bearing plate sinks, the key board is embedded in the middle of the limiting plate, and the limiting plate is used for limiting the position of the key board, so that the position of the key board is prevented from being deviated, and the detection accuracy is improved; the pressing assembly is used for pressing the upper surface of the key board, so that the upper surface of the key board is prevented from bulging due to extrusion, the flatness of the upper surface of the key board is ensured, and the detection accuracy is improved; the trigger assembly is used for pressing the keys on the key board, so that a key signal is triggered, the key signal is transmitted to the PCB detection board through the conductive bar, and therefore the condition of the keys is fed back on the display screen, and the detection condition of the keys is observed more intuitively.

The utility model discloses further set up to: a second driving cylinder is fixedly arranged on the first bearing plate; the pressing assembly comprises a second bearing plate and a pressing plate, the second bearing plate is fixedly connected to a piston rod of the second driving cylinder, and the pressing plate is fixed below the second bearing plate.

Through the technical scheme, the second driving cylinder is used for driving the second bearing plate to slide up and down, and the second bearing plate is used for bearing the lower pressing plate; the second drives actuating cylinder drive second loading board and drives the holding down plate and move down to make the holding down plate horizontal pressure on the keypad, and then prevent the keypad upper surface because the extrusion takes place the swell, guarantee the roughness of keypad upper surface, and then improve the accuracy that detects.

The utility model discloses further set up to: the trigger assembly comprises a pen-shaped air cylinder and a trigger block, the pen-shaped air cylinder is fixed on the lower pressure plate, and the trigger block is fixed on a piston rod of the pen-shaped air cylinder; the trigger block is of a bullet head type and is made of conductive cotton;

the trigger block penetrates through the second bearing plate, the lower pressing plate, the first bearing plate and the limiting plate and is located right above the key plate.

According to the technical scheme, the pen-shaped air cylinder is used for driving the trigger block, the trigger block penetrates through the second bearing plate, the lower pressing plate, the first bearing plate and the limiting plate, and the trigger block is made of conductive cotton, so that the trigger block can trigger keys on the capacitive screen to trigger key signals; and the trigger block is soft, so that when the keys on the capacitive screen are pressed, the capacitive screen is prevented from being damaged due to pressing.

The utility model discloses further set up to: fixedly connected with drives actuating cylinder on the workstation first, the first piston rod that drives actuating cylinder connects the U-shaped frame, and U-shaped frame bottom fixedly connected with guide bar, guide bar fixed connection is on first loading board.

Through the technical scheme, the connecting rod is used for connecting the U-shaped frame and the first bearing plate together; the first actuating cylinder that drives is used for driving the U-shaped frame to make the U-shaped frame drive first loading board and slide from top to bottom, thereby carry out detection achievement on next step.

The utility model discloses further set up to: the workbench is provided with a limiting hole, and the first bearing plate is fixedly connected with a limiting column matched with the limiting hole.

Through the technical scheme, the limiting columns are matched with the limiting holes to limit the position of the first bearing plate, so that the first bearing plate can move according to the preset position in the downward moving process, the limiting plate can be accurately sleeved on the key board, and the detection accuracy is improved.

The utility model discloses further set up to: and the lower pressing plate is provided with a buffer block, and the buffer block is positioned under the second bearing plate.

Through the technical scheme, the second bearing plate is in the sliding process, and the buffer block is used for slowing down the speed of the second bearing plate moving downwards, so that the second bearing plate falls slowly, the vibration of the detection equipment is reduced, and the detection accuracy is improved.

The utility model discloses further set up to: and a storage cavity is arranged at the bottom of the workbench.

Through above-mentioned technical scheme, storing chamber is used for storing instrument or equipment component etc..

The utility model discloses further set up to: the workbench is provided with a display panel, and the display panel is electrically connected with the PCB detection board.

Through the technical scheme, the display panel is used for feeding back the condition of the key on the display screen, and the detection condition of the key is observed more intuitively.

To sum up, the utility model discloses following beneficial effect has:

the PCB detection board is connected with the key board and the display screen, and feeds back the current and the resistance of the keys on the key board to the display screen, so that the detection condition of the keys can be observed more intuitively, and the obtained detection result is more accurate;

2. a lower pressing plate in the lower pressing assembly is used for ensuring the flatness of the upper surface of the key plate, so that the detection accuracy is improved; the trigger block in the trigger assembly is made of soft materials, and the capacitive screen of the key board is prevented from being abraded in the pressing process.

Drawings

Fig. 1 is an overall configuration diagram of the present embodiment;

FIG. 2 is a schematic view of the structure inside the detection area in the present embodiment;

FIG. 3 is a connection diagram of the first driving assembly and the U-shaped frame of the present embodiment;

FIG. 4 is a schematic structural diagram of the components of the present embodiment;

FIG. 5 is a front view of the components of the present embodiment;

FIG. 6 is a diagram illustrating a positional relationship between the first carrier plate and the position-limiting plate of the present embodiment;

FIG. 7 is a schematic structural diagram of a trigger assembly of the present embodiment;

fig. 8 is a schematic structural view of the bottom of the key sheet of the present embodiment.

Reference numerals: 1. a work table; 2. a PCB detection board; 3. a detection terminal; 4. a first bearing plate; 5. a limiting plate; 6. pressing the assembly; 7. a second carrier plate; 8. a lower pressing plate; 9. a second driving cylinder; 10. a trigger component; 11. a pen-shaped cylinder; 12. a trigger block; 13. a key sheet; 14. a first driving cylinder; 16. a U-shaped frame; 17. a guide rod; 18. a limiting hole; 19. a limiting column; 20. a buffer block; 22. a display panel; 23. a frame; 24. a storage area; 25. a detection zone; 26. a display area; 27. stainless steel snap fasteners; 28. a handle; 29. a control button; 30. a detection table; 31. a through hole; 32. a support plate; 33. a fixing plate; 34. fixing the transverse plate; 35. a guide bar; 36. a first fixed long plate; 37. a second fixed long plate; 38. a conductive strip.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 1, a function test apparatus of a keypad includes a chassis 23, the chassis 23 including a storage area 24, a test area 25, and a display area 26; the storage area 24 is provided with a storage cavity, a workbench 1 is arranged above the storage cavity, the workbench 1 is covered on the storage cavity, a stainless steel hinge is fixedly connected between the rear side of the workbench 1 and the rack 23 through screws, and stainless steel snap fasteners 27 are respectively fixedly connected between the two sides of the rack 23 and the workbench 1 through screws; the two sides of the frame 23 are respectively positioned below the stainless steel spring hasps 27 and fixedly connected with handles 28 through bolts; a control button 29 is arranged at the front side of the storage area 24; the display area 26 is provided with the display panel 22.

Referring to fig. 2 and 8, a detection table 30 is fixed on the upper portion of the workbench 1 through bolts, and the detection table 30 is located in the detection area 25; through holes 31 are formed in the detection table 30 and the workbench 1; a PCB detection board 2 is fixed on the upper end of the detection table 30 through a screw, and a connecting wire on the lower side of the PCB detection board 2 passes through the through hole 31 to be electrically connected with the display panel 22 and the control button 29; the upper surface welding of PCB pick-up plate 2 has detection terminal 3, and when the keypad 13 was placed on the pick-up plate, the busbar 38 detection terminal 3 conflict of keypad 13 bottom was connected.

Referring to fig. 2 and 3, two support plates 32 are fixed on the upper end of the working table 1 by bolts, the two support plates 32 are located at the positions which are at the two sides of the detection table 30 and are inclined to the rear, and the two support plates 32 are connected with the frame 23 by bolts; the upper ends of the two supporting plates 32 are fixedly connected with a fixing plate 33; a fixed transverse plate 34 is fixed between the two supporting plates 32 through bolts, a first driving cylinder 14 is fixedly connected to the fixed transverse plate 34, guide rods 35 are respectively arranged on two sides of the first driving cylinder 14, and one end of each guide rod 35 is fixed to the workbench 1 while the other end is fixed to a fixed plate 33.

Referring to fig. 2, 4 and 6, a piston rod bolt of the first driving cylinder 14 is fixedly connected with a U-shaped frame 16, and the U-shaped frame 16 is sleeved on two guide rods 35; two guide rods 17 are respectively fixed at the bottoms of two vertical sections of the U-shaped frame 16 through bolts, a first bearing plate 4 is fixed at the other end of each guide rod 17 through bolts, a limiting plate 5 is fixed on the lower end face of each first bearing plate 4 through bolts, and the limiting plate 5 is located right above the detection table 30; the limiting plate 5 is a frame structure with the middle part thereof copying with the key board 13; when detecting the function of keypad 13, first loading board 4 sinks, and keypad 13 is embedded at limiting plate 5 middle part, and limiting plate 5 limits the position that the button was ann, avoids keypad 13 position to take place the skew.

Referring to fig. 4, the first loading plate 4 is provided with a pressing assembly 6 and a triggering assembly 10; two wide edges of the first bearing plate 4 are respectively fixed with a second driving cylinder 9 by bolts; the pressing assembly 6 comprises a second bearing plate 7 and a pressing plate 8, piston rods of two second driving cylinders 9 are fixedly connected to the second bearing plate 7, the second bearing plate 7 is sleeved on the four guide columns, and the second bearing plate 7 is of a frame structure; two long edges of the bottom of the second bearing plate 7 are respectively fixedly connected with three support columns, and the lower pressing plate 8 is fixed at the other ends of the six support columns through bolts.

Referring to fig. 4 and 7, four supporting columns are fixed at the upper end of the lower pressing plate 8, a first fixed long plate 36 is fixedly connected to the upper end of the supporting columns passing through the second bearing plate 7, and the triggering assemblies 10 are correspondingly arranged on the first fixed long plate 36 according to the distribution of the keys on the key plate 13 (refer to fig. 2); the trigger assembly 10 comprises a pen-shaped air cylinder 11 and a trigger block 12, the pen-shaped air cylinder 11 is fixed on a first fixed long plate 36, the trigger block 12 is fixed on a piston rod of the pen-shaped air cylinder 11, the trigger block 12 is of a bullet head type, and the trigger block 12 is made of conductive cotton; round holes are formed in the positions, corresponding to the trigger assembly 10, of the lower pressing plate 8 and the first bearing plate 4, and the trigger block 12 passes through the round holes in the second bearing plate 7 and the lower pressing plate 8, the round hole in the first bearing plate 4 and the limiting plate 5 (refer to fig. 6) and is located right above the key plate 13; the supporting column is fixedly connected with the upper end of the first fixed long plate 36 on the second bearing plate 7, the upper end of the supporting column is connected with a second fixed long plate 37, the second fixed long plate 37 is positioned right above the first fixed long plate 36, and a round hole is formed in the position, corresponding to the trigger assembly 10, of the second fixed long plate 37.

Referring to fig. 3 and 5, two limiting holes 18 are formed in the rear side of the detection table 30 on the working table 1, and two limiting posts 19 matched with the limiting holes 18 are fixedly connected to the bottom of the first bearing plate 4 through bolts; the upper end of the lower pressure plate 8 is fixedly connected with a buffer block 20 through bolts, and the buffer block 20 is located right below the second bearing plate 7.

The using process is briefly described as follows: firstly, a capacitive screen of a key board 13 to be detected is upward, a conductive strip 38 at the bottom of the key board 13 contacts a detection terminal 3 on a PCB detection board 2, and the key board 13 is placed on a detection platform 30; then, the control button 29 is pressed to start the detection device, at this time, the piston rod of the first driving motor contracts, the U-shaped frame 16 drives the first bearing plate 4 to move downwards, the limiting plate 5 is buckled on the key plate 13, and therefore the key plate 13 is fixed and the position of the key plate 13 is limited; then, the piston rod of the second driving cylinder 9 contracts to drive the second bearing plate 7 to move downwards, so that the second bearing plate 7 drives the lower pressing plate 8 to press downwards, and the flatness of the upper surface of the key plate 13 is ensured; then different trigger assemblies 10 press the keys on the key board 13 to test the key conditions under different permutation and combination; finally, the key signals under different permutation and combination are transmitted to the PCB detection board 2 through the conductive strips 38, the PCB detection board 2 feeds back the current and resistance conditions of the keys on the display screen, and whether the detected key board 13 is good or not is judged according to the conditions of the detected current and resistance.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (8)

1. A function detection device of a key board comprises a workbench (1), and is characterized in that a PCB detection board (2) is fixed on the workbench (1), a detection terminal (3) is arranged on the upper surface of the PCB detection board (2), and the detection terminal (3) is connected with a conductive bar (38) at the bottom of the key board (13);

a first bearing plate (4) vertically slides on the workbench (1), a limiting plate (5) is fixed on one side, close to the PCB detection plate (2), of the first bearing plate (4), and the limiting plate (5) is of a frame structure with the middle part thereof being in profile modeling with the key plate (13); the first bearing plate (4) is connected with a flat pressing component (6) used for keeping the upper surface of the key board (13) in a sliding mode, and a trigger component (10) used for pressing the keys on the key board (13) is arranged on the pressing component (6).

2. The function detecting device of a key sheet as claimed in claim 1, wherein a second driving cylinder (9) is fixedly arranged on the first loading plate (4); the pressing assembly (6) comprises a second bearing plate (7) and a pressing plate (8), the second bearing plate (7) is fixedly connected to a piston rod of a second driving cylinder (9), and the pressing plate (8) is fixed below the second bearing plate (7).

3. The function detecting device of a key sheet as claimed in claim 2, wherein the triggering assembly (10) comprises a pen-shaped air cylinder (11) and a triggering block (12), the pen-shaped air cylinder (11) is fixed on the lower pressing plate (8), and the triggering block (12) is fixed on a piston rod of the pen-shaped air cylinder (11); the trigger block (12) is bullet-head-shaped, and the trigger block (12) is made of conductive cotton;

the trigger block (12) passes through the second bearing plate (7), the lower pressing plate (8), the first bearing plate (4) and the limiting plate (5) and is located right above the key plate (13).

4. The device for detecting the function of the key board according to claim 1, wherein a first driving cylinder (14) is fixedly connected to the working table (1), a piston rod of the first driving cylinder (14) is connected to a U-shaped frame (16), a guide rod (17) is fixedly connected to the bottom of the U-shaped frame (16), and the guide rod (17) is fixedly connected to the first bearing plate (4).

5. The function detection device of a key board according to claim 4, wherein a limiting hole (18) is formed in the working platform (1), and a limiting column (19) matched with the limiting hole (18) is fixedly connected to the first bearing plate (4).

6. The device for detecting the function of a key sheet as claimed in claim 2, wherein the lower pressing plate (8) is provided with a buffer block (20), and the buffer block (20) is located right below the second loading plate (7).

7. The function detection device of the key board according to claim 1, characterized in that a storage cavity is arranged at the bottom of the working platform (1).

8. The apparatus for testing the function of a key sheet according to any one of claims 1-7, wherein a display panel (22) is provided on said work table (1), said display panel (22) being electrically connected to said PCB test board (2).

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