Key service life testing machine
By designing a key life testing machine consisting of a base plate, a back plate, a motor, a main shaft and a vertical stick, and using a motor-driven cam mechanism, the test instability and maintenance complexity problems of photoelectric and mechanical key testers are solved, and stable and efficient key life testing is achieved in extreme environments.
Patent Information
- Application Number
- CN202422610153.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Existing photoelectric key testers are sensitive to light and temperature changes, which affect test accuracy and stability. Mechanical key testers have complex structures and high maintenance costs, making them difficult to meet the requirements of use in extreme environments.
A key life testing machine including a base plate, a back plate, a motor, a main shaft, a platform and a vertical stick was designed. A motor-driven cam mechanism was used to test the key life. The machine has a simple structure, is easy to maintain and use, and can operate stably in extreme environments.
It achieves stability and accuracy in key life testing under extreme environments, reduces equipment maintenance costs, improves usage efficiency, and supports simultaneous testing of multiple products.
Smart Images
Figure CN223320020U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of key life testing machines, in particular to a key life testing machine which can perform life detection tests on various keys such as membrane switches. Background Art
[0002] Currently commonly used photoelectric keypad testers are sensitive to changes in light and temperature, which can affect test accuracy and stability. Extreme environmental conditions, such as high or low temperatures or high humidity, can adversely affect the performance and lifespan of the tester.
[0003] When a mechanical key tester fails, it uses a large number of mechanical transmission and lever components, has a complex structure, is difficult to repair, and is expensive, which increases the maintenance cost of the equipment and affects its efficiency.
[0004] Therefore, a key life tester with a simple structure and easy use and maintenance is needed. Utility Model Content
[0005] The purpose of the utility model is to provide a key life tester, which has a simple structure and is easy to use and maintain.
[0006] The technical solution adopted is:
[0007] A key life tester comprises a bottom plate, a back plate, a motor, a main shaft, a platform and at least one vertical rod. The back plate is fixed to the rear side of the bottom plate, forming an L-shaped support frame as a whole.
[0008] The motor is fixed on the back plate, and the pulley of the motor output shaft is connected to the pulley of the main shaft through a belt.
[0009] Both ends of the main shaft are supported on the base plate through bearings and brackets.
[0010] At least one cam is fixed on the main shaft.
[0011] The platform is fixed on the base plate and is located below the cam.
[0012] There is at least one opening on the platform, a vertical stick is arranged in the hole, and a horizontally arranged positioning pin is arranged above the vertical stick.
[0013] There is a standing stick under each cam.
[0014] A spring is sleeved on the upright stick and is located between the positioning needle and the platform.
[0015] A limiting cylinder can be fixed on the upper surface of the platform, the top end of the vertical stick passes through the upper hole of the limiting cylinder, and the upper surface of the limiting cylinder blocks the positioning needle.
[0016] When there are multiple cams, the protrusions of the cams are evenly arranged in the circumferential direction of the main shaft.
[0017] Its advantages are:
[0018] This testing machine has a simple structure, is easy to use and maintain, and can be easily replaced with simple parts if damaged. The number of strikes can be set arbitrarily, and multiple products can be tested at the same time. It has a simple structure and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural diagram of the present utility model.
[0020] Figure 2 for Figure 1 A partial enlarged view of part A in the middle.
[0021] Back plate 1, motor 2, spindle 3, positioning pin 4, bottom plate 5, spring 6, vertical stick 7, cam 8, platform 9, belt 10, clamp 11, bracket 12, silicone head 13, limiting cylinder 14. DETAILED DESCRIPTION
[0022] A key life testing machine comprises a bottom plate 5, a back plate 1, a motor 2, a main shaft 3, a platform 9 and at least one vertical rod 7 (hollow).
[0023] The back plate 1 is fixed to the rear side of the bottom plate 5, forming an L-shaped support frame as a whole.
[0024] The motor 2 is fixed on the back plate 1 , and the pulley of the motor output shaft is connected to the pulley of the main shaft 3 through a belt 10 .
[0025] Both ends of the main shaft 3 are supported on the base plate 5 through bearings and brackets 12.
[0026] At least one cam 8 is fixed on the main shaft 3 .
[0027] The platform 9 is fixed on the base plate 5 , and the platform 9 is located below the cam 8 .
[0028] There is at least one opening on the platform 9, in which a vertical stick 7 is vertically arranged, and above the vertical stick 7 a horizontally arranged positioning needle 4 (steel needle) is provided.
[0029] A vertical stick 7 is provided below each cam 8 .
[0030] A spring 6 is sleeved on the vertical rod 7 and is located between the positioning needle 4 and the platform 9 .
[0031] Furthermore, in order to prevent the vertical stick 7 from being popped out by the upward rebound force of the spring 6, a cylindrical limiting cylinder 14 is fixed on the upper surface of the platform 9. The top of the vertical stick 7 passes through the upper center hole of the limiting cylinder 14. The upper surface of the limiting cylinder 14 will block the positioning needle 4, and the vertical stick 7 will not pop out from the platform hole.
[0032] Furthermore, a silicone head 13 is provided at the bottom of the standing stick 7 .
[0033] Furthermore, the pulley of the main shaft 3 can be set in the middle of the main shaft 3, and multiple cams 8 are set on both sides of the pulley of the main shaft 3. The protrusions of the cams 8 can be evenly arranged in the circumferential direction of the main shaft 3 to balance the force.
[0034] When there are two cams 8 on the main shaft 3, the protrusions of the two cams 8 can be divided into upper and lower settings.
[0035] The button to be tested can be pasted on the bottom plate 5 .
[0036] Furthermore, a clamp is provided below the vertical stick 7. This clamp is a known technology and a conventional clamp in the mechanical field can be selected to clamp and fix the key to be tested.
[0037] Working principle:
[0038] Motor 2 drives belt 10, spindle 3, and cam 8, causing the cam 8's protrusion to move up and down, pressing down on stick 7 and striking the key under test. The counter can be set to control the start and stop of motor 2 to determine the quality of the key. This simulates the actual use of a mobile phone keyboard. The motor components provide precise and adjustable counting, durable use, and can test multiple keys simultaneously. The test speed is adjustable (0 to 60 times / minute, adjustable and programmable), the test stroke is adjustable (changing the size of cam 8 and the length of stick 7, adjustable from 0 to 50mm), the test count is 0 to 99999999 times (eight-digit counter, programmable), and the power supply is AC220V / 50Hz.
Claims
1. A key life tester, comprising a base plate (5), a back plate (1), a motor (2), a main shaft (3), a flat A platform (9) and at least one upright stick (7); a back plate (1) is fixed to the rear side of the bottom plate (5), and the whole forms an L-shaped support frame; Its characteristics are: The motor (2) is fixed on the back plate (1), and the pulley of the motor output shaft is connected to the pulley of the main shaft (3) through a belt (10); Both ends of the main shaft (3) are supported on the base plate (5) through bearings and brackets (12); At least one cam (8) is fixed on the main shaft (3); The platform (9) is fixed on the base plate (5), and the platform (9) is located below the cam (8); There is at least one opening on the platform (9), in which a vertical stick (7) is arranged. A horizontal A positioning pin (4) is provided; A standing stick (7) is provided below each cam (8); A spring (6) is sleeved on the upright stick (7), and the spring (6) is located between the positioning needle (4) and the platform (9).
2. A key life tester according to claim 1, characterized in that: A limiting cylinder (14) is fixed on the upper surface of the platform (9), and the top of the vertical stick (7) is fixed on the upper surface of the limiting cylinder (14). The hole is penetrated, and the upper surface of the limiting cylinder (14) blocks the locking needle (4).
3. A key life tester according to claim 1, characterized in that: The bottom of the standing stick (7) is provided with a silica gel head (13).
4. A key life tester according to claim 1, characterized in that: The belt pulley of the main shaft (3) is arranged in the middle of the main shaft (3).
5. A key life tester according to claim 1, characterized in that: When there are multiple cams (8), the protrusions of the cams (8) are evenly arranged in the circumferential direction of the main shaft (3).
6. A key life tester according to claim 1, characterized in that: The standing stick (7) is a hollow standing stick.