CN212254560U

CN212254560U - Testing device for fatigue and service life inhaul cable of key switch in high-low temperature environment

Info

Publication number: CN212254560U
Application number: CN202021024933.1U
Authority: CN
Inventors: 操龙庆; 金红节; 肖正帮
Original assignee: Suzhou First Test Technology Co ltd
Current assignee: Suzhou First Test Technology Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-12-29
Anticipated expiration: 2030-06-05

Abstract

A guy cable testing device for fatigue and service life of a key switch in high and low temperature environments is characterized in that a control system (1) is connected with a cylinder fixing mechanical structure (3) through a control circuit, the cylinder fixing mechanical structure (3) is connected with a key fixing mechanical structure (4) through transmission, a working cylinder (33) is installed in the cylinder fixing mechanical structure (3), a pressing head (45), a limiting block (42) and a spring (43) are installed in the key fixing mechanical structure (4), and a piston of the working cylinder (33) and the rear end of the pressing head (45) are connected between the cylinder fixing mechanical structure (3) and the key fixing mechanical structure (4) through a guy cable (31); the limiting block (42) and the spring (43) are arranged on a transmission line of the inhaul cable (31). The piston of the working cylinder (33) is connected to the pressing head (45) through a guy cable (31) for transmission, and meanwhile, the spring (43) and the limiting block (42) are mutually matched to simulate the pressing reset action of the key. The test temperature range is not limited, the test range is wider, the test accuracy is improved, the test efficiency is high, the manufacturing cost is low, the operation is convenient, the durable use is realized, the speed is continuously adjustable, and the requirement of quick test is met.

Description

Testing device for fatigue and service life inhaul cable of key switch in high-low temperature environment

Technical Field

The utility model relates to a button life test innovation equipment device's institutional advancement technique, especially fatigue and life-span cable testing arrangement under the high low temperature environment of key switch.

Background

The keyboard key life tester can test the anti-strike life of various rubber and metal elastic sheet keys of computers, calculators, notebook computers and the like, and is particularly suitable for testing the fatigue of the keys of the computer keyboard. The keyboard key life tester is suitable for the standard: the silicone rubber and the key life test of GB/T4967-95 are equivalent to the JIS IEC related standards.

For example, there is a common computer keyboard product test, which includes: at most 108 measuring heads strike the keys, and a motor is used for driving the eccentric wheel to enable the connecting rod to move up and down back and forth so as to strike the keys; and setting the test times of the counter as a result, thereby judging the quality of the silica gel key.

At present, various key switch service life devices are common testing devices in the market, but generally operate at normal temperature, if a testing device capable of operating at high and low temperatures is to be customized, the mainstream method is to strictly process through an air source and use an operating element system with high temperature resistance and low conditions to realize, the method inevitably increases the cost, and the mode has large application limitation on the high and low temperature range, generally operates slowly at the temperature lower than-30 ℃, and cannot meet the requirement on testing speed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tired and life-span cable testing arrangement under the high low temperature environment of key switch solves above technical problem.

The purpose of the utility model is realized by the following technical measures: the device comprises a control system, a power system, a cylinder fixing mechanical structure and a key fixing mechanical structure; the control system is connected with the cylinder fixing mechanical structure through a control circuit, the power system is connected with the cylinder fixing mechanical structure through a pneumatic circuit, the cylinder fixing mechanical structure and the key fixing mechanical structure are connected through transmission, a working cylinder is mounted in the cylinder fixing mechanical structure, a pressing head, a limiting block and a spring are mounted in the key fixing mechanical structure, and a piston of the working cylinder and the rear end of the pressing head are connected between the cylinder fixing mechanical structure and the key fixing mechanical structure through a guy cable; the limiting block and the spring are installed on a transmission line of the inhaul cable.

Particularly, the control system comprises an induction sensor which is arranged on the working cylinder, the induction sensor is a cylinder magnetic induction sensor, and the cylinder fixing mechanical structure is connected with the control system through the induction sensor and a control circuit.

Particularly, the bottom of the cylinder fixing mechanical structure is provided with a cylinder base, the working cylinder is slidably arranged at the rear end of the cylinder base, the upper part of the front end of the cylinder base is provided with a clamping seat, and the inhaul cable penetrates through the clamping seat and is connected to the piston at the front end of the working cylinder.

Particularly, a test base is installed at the bottom of the key fixing mechanical structure, a clamping seat is fixed at the upper part of the front end of the test base, a limiting block is fixed at the upper side of the test base, an executing mechanism is fixed at the front part of the upper side of the test base, two guide rods are parallelly connected and installed between the clamping seat and the executing mechanism, a push plate is installed between the clamping seat and the limiting block, the push plate is connected onto the two guide rods in a sliding and penetrating mode, springs are sleeved on the two guide rods between the push plate and the clamping seat in a grading mode, and a.

In particular, a sample clamp is arranged on the actuating mechanism, and the sample clamp and the pressing head are coaxially arranged.

In particular, the control system further comprises a relay, a counter, a timer, a solenoid valve, a direct current power supply and a start/emergency stop switch.

In particular, the power system further comprises compressed air, a power cylinder and a pressure reducing valve.

The utility model discloses an advantage and effect: the testing temperature range is not limited, the testing range is wider, the testing precision is improved, the testing efficiency is high, the manufacturing cost is low, the operation is convenient, the use is durable, the fatigue testing operation quality of the key switch of the automobile body is obviously improved, the speed is continuously adjustable, and the requirement of quick testing is met.

Drawings

Fig. 1 is a schematic structural diagram of an apparatus system according to an embodiment of the present invention.

Fig. 2 is the embodiment of the present invention, a schematic view of a mechanical structure for fixing a cylinder.

Fig. 3 is a schematic view of a key fixing mechanism according to an embodiment of the present invention.

The reference numerals include:

the device comprises a control system 1, a power system 2, a cylinder fixing mechanical structure 3, a key fixing mechanical structure 4, an induction sensor 21, a pull cable 31, a cylinder base 32, a working cylinder 33, an actuating mechanism 41, a limiting block 42, a spring 43, a test base 44 and a pressing head 45.

Detailed Description

The utility model discloses the principle lies in, borrows the cable brake structure principle of reference bicycle, improves prior art, and cable mechanism is verified through practice, easily makes durable, and the key is suitable for the relevant transmission control mechanism of cooperation, accomplishes work smoothly, and this action mode can solve above problem perfectly, and mechanical frame and action actuating mechanism independently assemble, in the use, need not loaded down with trivial details process control.

The utility model discloses, be different from other most fatigue test device's key point, a motion process is only controlled in the action of working cylinder 33, and another motion process is by promoting through spring 43, and stroke control leans on mechanical structure's stopper 42, connects working cylinder 33's piston to the transmission of pressure head 45 through cable 31 promptly, presses the action of reseing by spring 43 and stopper 42 mutually supporting simulation button simultaneously. By means of the connection of the guy cable 31, the service life test of the switch key can be accurately controlled, and meanwhile, the operation under severe high-temperature and low-temperature environments can be completely realized. The mechanical structure design is relatively simple, the main difficulty lies in accurately controlling the press stroke of the key, the control system of the device has complete functions and lower cost, and the closed-loop system control is realized by simply adopting the matching and combination of electronic elements such as a counter, a timer, a relay and the like.

The utility model discloses a: the device comprises a control system 1, a power system 2, a cylinder fixing mechanical structure 3 and a key fixing mechanical structure 4.

The present invention will be further explained with reference to the drawings and examples.

Example (b): as shown in fig. 1, 2 and 3, a control system 1, a power system 2, a cylinder fixing mechanical structure 3 and a key fixing mechanical structure 4 are independently installed, the control system 1 is connected with the cylinder fixing mechanical structure 3 through a control circuit, the power system 2 is connected with the cylinder fixing mechanical structure 3 through a pneumatic circuit, the cylinder fixing mechanical structure 3 is connected with the key fixing mechanical structure 4 through transmission, wherein a working cylinder 33 is installed in the cylinder fixing mechanical structure 3, a pressing head 45, a limiting block 42 and a spring 43 are installed in the key fixing mechanical structure 4, and a piston of the working cylinder 33 and the rear end of the pressing head 45 are connected between the cylinder fixing mechanical structure 3 and the key fixing mechanical structure 4 through a guy cable 31; the stopper 42 and the spring 43 are mounted on a transmission line of the cable 31.

In the foregoing, the control system 1 includes the inductive sensor 21, the inductive sensor 21 is installed on the working cylinder 33, the inductive sensor 21 is a cylinder magnetic inductive sensor, and the cylinder fixing mechanical structure 3 is connected to the control system 1 through the inductive sensor 21 and a control circuit.

In the foregoing, the cylinder base 32 is installed at the bottom of the cylinder fixing mechanical structure 3, the working cylinder 33 is slidably installed at the rear end of the cylinder base 32, the clamping seat is installed at the upper portion of the front end of the cylinder base 32, and the cable 31 passes through the clamping seat and is connected to the piston at the front end of the working cylinder 33.

In the foregoing, the bottom of the key fixing mechanical structure 4 is provided with the test base 44, the upper part of the front end of the test base 44 is provided with the fixed clamping seat, the upper side of the test base 44 is provided with the fixed limiting block 42, the front part of the upper side of the test base 44 is provided with the executing mechanism 41, the two guide rods are connected in parallel between the clamping seat and the executing mechanism 41, the push plate is arranged between the clamping seat and the limiting block 42, the push plate is connected with the two guide rods in a sliding and penetrating manner, the two guide rods between the push plate and the clamping seat are sleeved with the springs 43 in a grading.

In the above, the sample holder is attached to the actuator 41, and the sample holder is attached coaxially with the pressing head 45. The sample clamp is designed and manufactured according to the actual installation fixing point and the installation angle of the key.

In the embodiment of the utility model provides an in, control system 1 comprises relay, counter, time-recorder, solenoid valve, DC power supply and start/emergency stop switch etc.. The power system 2 is composed of compressed air, a power cylinder, a cylinder magnetic induction sensor 21, a pressure reducing valve and the like.

The embodiment of the utility model provides an in, mechanical actuating mechanism such as pneumatic driving system 2 and cylinder fixed mechanical structure 3, button fixed mechanical structure 4 independently set up respectively, combines two structures together through cable 31, finally realizes pneumatic part control mechanical actuating mechanism. The cylinder fixing mechanical structure 3 is relatively simple in design, mainly completes fixing of the working cylinder 33, connects the cylinder piston with the inhaul cable 31, and fixes the end locking part of the inhaul cable 31 on the cylinder base 32 through the clamping support structure. The action of the working cylinder 33 drives the cable 31 to move, so as to control the action of the actuating mechanism 41 in the key fixing mechanical structure 4, and therefore, when the fixed position of the working cylinder 33 is designed, the movable mounting structure is correspondingly designed, and the movement stroke of the cable 31 is convenient to debug.

The embodiment of the utility model provides an in, button fixed mechanical structure 4 aims at testing the sample piece with the fixed button of simulation real car mounted position, presses stroke control and is whole button fixed mechanical structure 4's key consideration, confirms before the design and presses the stroke parameter, and the stroke stopper 42 that corresponds prevents mechanical actuator overtravel. The withdrawing action of the actuating mechanism 41 is driven by the driving of the cylinder piston, and meanwhile, the spring 43 clamped in the limiting block 42 is compressed, when the pressing action needs to be executed, the cylinder piston switches the action direction, the restraining force of the compression spring 43 is eliminated, the actuating mechanism 41 is pushed forward under the action of the restoring force of the compression spring 43, and then the pressing action is realized.

The embodiment of the utility model provides an in, the fastest 600 times/min test speed is applicable to big batch reliability test and can reach l5 button tests at most.

The embodiment of the utility model provides an in, control system 1 cooperation intelligent control shows the function, and the quality is reliable, shows test rate in real time.

In the embodiment of the utility model, a plurality of products can be tested simultaneously by matching with the mechanical fixture which is further improved by the key fixing mechanical structure 4, and each key can be set with different pressures and different heights; each product can be tested at multiple points; the key sample can be more conveniently operated and clamped.

Claims

1. A guy cable testing device for fatigue and service life of a key switch in high and low temperature environments comprises a control system (1), a power system (2), a cylinder fixing mechanical structure (3) and a key fixing mechanical structure (4); the device is characterized in that a control system (1), a power system (2), a cylinder fixing mechanical structure (3) and a key fixing mechanical structure (4) are independently installed, the control system (1) is connected with the cylinder fixing mechanical structure (3) through a control circuit, the power system (2) is connected with the cylinder fixing mechanical structure (3) through a pneumatic circuit, the cylinder fixing mechanical structure (3) is connected with the key fixing mechanical structure (4) through transmission, wherein a working cylinder (33) is installed in the cylinder fixing mechanical structure (3), a pressing head (45), a limiting block (42) and a spring (43) are installed in the key fixing mechanical structure (4), and a piston of the working cylinder (33) and the rear end of the pressing head (45) are connected between the cylinder fixing mechanical structure (3) and the key fixing mechanical structure (4) through a guy cable (31); the limiting block (42) and the spring (43) are arranged on a transmission line of the inhaul cable (31).

2. The inhaul cable testing device for the fatigue and the service life of the key switch in the high and low temperature environments as claimed in claim 1, wherein the control system (1) comprises an induction sensor (21), the induction sensor (21) is installed on a working cylinder (33), the induction sensor (21) is a cylinder magnetic induction sensor, and the cylinder fixing mechanical structure (3) is connected with the control system (1) through the induction sensor (21) and a control circuit.

3. The device for testing the fatigue and the service life of the push button switch in the high and low temperature environment as claimed in claim 1, wherein the cylinder base (32) is installed at the bottom of the cylinder fixing mechanical structure (3), the working cylinder (33) is slidably installed at the rear end of the cylinder base (32), the clamping seat is installed at the upper part of the front end of the cylinder base (32), and the pull cable (31) passes through the clamping seat and is connected to the piston at the front end of the working cylinder (33).

4. The inhaul cable testing device for the fatigue and the service life of the key switch in the high and low temperature environments as claimed in claim 1, wherein a testing base (44) is installed at the bottom of the key fixing mechanical structure (4), a clamping seat is fixed at the upper part of the front end of the testing base (44), a limiting block (42) is fixed at the upper side of the testing base (44), an executing mechanism (41) is fixed at the front part of the upper side of the testing base (44), two guide rods are installed between the clamping seat and the executing mechanism (41) in parallel connection, a push plate is installed between the clamping seat and the limiting block (42), the push plate is in sliding connection with the two guide rods, springs (43) are sleeved on the two guide rods between the push plate and the clamping seat in a grading manner, and.

5. A push-button switch fatigue and life span cable testing device under high and low temperature environment as claimed in claim 1, characterized in that, the actuating mechanism (41) is provided with a sample clamp, and the sample clamp and the pressing head (45) are coaxially arranged.

6. The inhaul cable testing device for the fatigue and the service life of the key switch in the high and low temperature environments as claimed in claim 1, wherein the control system (1) further comprises a relay, a counter, a timer, an electromagnetic valve, a direct current power supply and a start/emergency stop switch.

7. The inhaul cable testing device for the fatigue and the service life of the key switch in the high and low temperature environments as claimed in claim 1, wherein the power system (2) further comprises compressed air, a power cylinder and a pressure reducing valve.