A travel switch response time detection device

Abstract

The present invention relates to a travel switch response time detection device, comprising a base, a guide shaft, an arm beam, a slider, and an oscilloscope. The travel switch comprises a switch body, an actuator is provided at the upper end of the switch body, an output cable is provided at the lower end of the switch body, the oscilloscope is electrically connected to the output cable, the lower end of the guide shaft and the lower end of the arm beam are respectively fixedly connected to the base, the upper end of the guide shaft passes through a spring and a slider in order from bottom to top, the upper end of the arm beam extends to the top of a clamp, the slider is also fixedly linked to a limit frame, a rack is provided in the limit frame, the rack and the gear are meshed with each other, the gear is coaxially fixedly connected to one side of a movable block, the other side of the movable block is hinged to the arm beam, the movable block is also provided with a limit surface and a friction surface, and the actuator abuts against the limit surface or the friction surface. By adopting the technical solution provided by the present invention, the force applied by the tester to the actuator can be basically consistent, avoiding overloading the force applied to the actuator and causing damage to the travel switch.

Description

Technical Field

[0001] The invention belongs to the technical field of travel switches, and in particular relates to a travel switch response time detection device. Background Art

[0002] A travel switch is a pressure-activated, fast-changing switch. Because the contact spacing of the switch is relatively small, common travel switches generally include a trigger device and an electrical switching device. The trigger device is used to transmit external force to the electrical switching device, and the electrical switching device is used to achieve switching of the electrical connection state. Travel switches are widely used in various types of electromechanical equipment, automobiles, aviation and aerospace electronic equipment.

[0003] For example, the patent document with the publication number "CN218730503U" discloses a waterproof sealed travel switch, comprising a housing; a static contact system and a dynamic contact system connected to the static contact system are provided in the housing, the dynamic contact system comprises a push rod, and an inner insulating bushing, a dynamic contact piece, and an outer insulating bushing are sequentially sleeved on the lower end of the push rod; the static contact system comprises an insulating seat, and a plurality of contact pieces are provided at the lower end of the insulating seat. This patented technology drives the travel switch to be converted by the internal switch unit through an extended range mechanism, making the electrical contact part of the travel switch more reliable. The electrical contact part is designed with redundant elastic contacts, with two contact pieces symmetrically mounted in parallel to control one set of circuit signals, and the other two contact pieces symmetrically mounted in parallel to control another set of circuit signals; this ensures that the switch can withstand strong vibrations and strong impacts from six degrees of freedom when pressed for a long time or in a free state and always maintains reliable contact.

[0004] However, a limit switch generally includes an actuator, a limit switch body and an output cable. The actuator is used to receive the pressing force applied by the user. The pressing force is converted inside the limit switch body and finally outputs a corresponding voltage signal through the output cable. The time from the user pressing the actuator to the output cable outputting the electrical signal is called the response time of the limit switch. After the limit switch is manufactured, the response time of the limit switch needs to be tested. Generally, a limit switch with a response time of less than 10 microseconds is classified as a qualified part. In the prior art, an oscilloscope is generally used to measure the response time of the limit switch. However, the limit switch has a small size and is not easy to clamp stably and reliably, nor is it easy to keep it in a stable triggering state, which affects the measurement accuracy of the limit switch response time. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a travel switch response time detection device.

[0006] The present invention provides a travel switch response time detection device, comprising a base, a guide shaft, an arm beam, a slider and an oscilloscope. A clamp is provided on the surface of the base, and the clamp is used to clamp the travel switch. The travel switch comprises a switch body, an upper end of the switch body is provided with an actuator, and the lower end of the switch body is provided with an output cable. The oscilloscope is electrically connected to the output cable. The lower end of the guide shaft and the lower end of the arm beam are respectively fixed to the base, and the upper end of the guide shaft passes through the spring and the slider in sequence from bottom to top. The upper end of the arm beam extends to the top of the clamp, and the slider is also fixed to the limit frame. A rack is provided in the limit frame, and the rack and the gear are meshed with each other. The gear is coaxially fixed to one side of the movable block, and the other side of the movable block is hinged to the arm beam. The movable block is also provided with a limit surface and a friction surface, and the actuator abuts against the limit surface or the friction surface.

[0007] The friction surface is an arc-shaped curved surface.

[0008] The limiting surface is a flat plane.

[0009] The gear is an incomplete gear.

[0010] The upper end of the guide shaft is also threadedly connected to the locking nut, and the locking nut is fitted together with the sliding block.

[0011] The clamp includes a supporting platform, a first fastener, a second fastener and a pressure block. The base is fixedly connected to the supporting platform. A accommodating groove is provided on the surface of the supporting platform. One side of the first fastener is hinged to the supporting platform, and the other side of the first fastener is hinged to one side of the second fastener. The supporting platform is also hinged to one side of the pressure block. When the other side of the second fastener is hung on the other side of the pressure block, the pressure block covers the switch body in the accommodating groove.

[0012] The pressing block is in a rectangular parallelepiped shape as a whole.

[0013] The second fastener is in a U shape as a whole.

[0014] The number of the first fasteners or the second fasteners is two, and the two first fasteners or the two second fasteners are respectively arranged on the left and right sides of the accommodating sink.

[0015] The surface of the support platform is further provided with a pin hole, in which a positioning pin is provided. The positioning pin securely connects the left and right sides of the switch body to the support platform.

[0016] The beneficial effects of the present invention are: by adopting the technical solution provided by the present invention, the limit switch is stably clamped by a clamp so that it has a stable posture; when a pressing force is applied to the slider, the pressing force is transmitted to the movable block via the rack and pinion transmission mechanism, causing the movable block to rotate, and then the actuator of the limit switch slides along the friction surface of the movable block until the actuator rests on the limit surface of the movable block, thereby testing the output electrical signal of the output cable through an oscilloscope and measuring the response time of the limit switch. Compared with the existing technology, the present invention enables the limit switch to be clamped reliably and stably, so that the force applied to the actuator by the tester can be basically consistent, avoiding damage to the limit switch caused by overloading the force applied to the actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an axonometric drawing of the present invention;

[0018] Figure 2 It is a front view of the present invention;

[0019] Figure 3 It is a left side view of the present invention;

[0020] Figure 4 is a top view of the present invention;

[0021] Figure 5 is an axonometric view of the base and guide shaft of the present invention;

[0022] Figure 6 is an axonometric view of the clamp of the present invention;

[0023] Figure 7 It is an axonometric view of the connection between the movable block and the gear of the present invention;

[0024] Figure 8 This is a front view of the movable block connected to the gear of the present invention;

[0025] Figure 9 This is a front view of the connection between the slider and the limit frame of the present invention;

[0026] Figure 10 It is a top view of the connection between the slider and the limit frame of the present invention.

[0027] In the figure: 1-base, 2-guide shaft, 3-arm beam, 4-slider, 5-clamp, 6-travel switch, 61-switch body, 62-actuator, 63-output cable, 7-spring, 8-limit frame, 9-rack, 10-gear, 11-live block, 12-limiting surface, 13-friction surface, 14-locking nut, 15-handle hole, 16-finger groove, 17-support platform, 18-first fastener, 19-second fastener, 20-pressure block, 21-accommodating sink, 22-locating pin. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below with reference to the accompanying drawings, but the scope of protection claimed is not limited to the above;

[0029] The present invention provides a travel switch response time detection device, such as Figures 1 to 10 As shown, it includes a base 1, a guide shaft 2, an arm beam 3, a slider 4 and an oscilloscope. A clamp 5 is provided on the surface of the base 1, and the clamp 5 is used to clamp the travel switch 6. The travel switch 6 includes a switch body 61. The upper end of the switch body 61 is provided with an actuator 62, and the lower end of the switch body 61 is provided with an output cable 63. The oscilloscope is electrically connected to the output cable 63. The lower end of the guide shaft 2 and the lower end of the arm beam 3 are respectively fixed to the base 1. The upper end of the guide shaft 2 passes through the spring 7 and the slider 4 in sequence from bottom to top. The upper end of the arm beam 3 extends to the top of the clamp 5. The slider 4 is also fixed to the limit frame 8. A rack 9 is provided in the limit frame 8. The rack 9 and the gear 10 are meshed with each other. The gear 10 is coaxially fixed to one side of the movable block 11, and the other side of the movable block 11 is hinged to the arm beam 3. The movable block 11 is also provided with a limit surface 12 and a friction surface 13. The actuator 62 rests on the limit surface 12 or the friction surface 13.

[0030] By adopting the technical solution provided by the present invention, the limit switch is stably clamped by a clamp so that it has a stable posture. When a pressing force is applied to the slider, the pressing force is transmitted to the movable block via the rack and pinion transmission mechanism, causing the movable block to rotate, and then the actuator of the limit switch slides along the friction surface of the movable block until the actuator abuts against the limit surface of the movable block, thereby testing the output electrical signal of the output cable through an oscilloscope and measuring the response time of the limit switch. Compared with the existing technology, the present invention can reliably and stably clamp the limit switch, so that the force applied to the actuator by the tester can be basically consistent, avoiding damage to the limit switch caused by overloading the force applied to the actuator.

[0031] Specifically, the friction surface 13 is an arc-shaped curved surface. The limiting surface 12 is a flat plane. The gear 10 is an incomplete gear. The upper end of the guide shaft 2 is also screwed to the locking nut 14, and the locking nut 14 is fitted together with the slider 4. The surface of the slider 4 is also provided with a handle hole 15. The inner wall surface of the handle hole 15 is also provided with a finger groove 16. With the technical solution of the present invention, due to the energy storage effect of the spring, the pressing force applied by the tester on the slider is transmitted to the actuator through the rack and pinion mechanism and the movable block. The spring absorbs the overload part of the pressing force, so that the pressing force finally received by the actuator can be kept consistent. By providing the handle hole 15 and the finger groove 16, the tester can easily find a suitable force.

[0032] In addition, the clamp 5 includes a support platform 17, a first fastener 18, a second fastener 19 and a pressure block 20. The base 1 is fixedly connected to the support platform 17. The surface of the support platform 17 is provided with a accommodating groove 21. One side of the first fastener 18 is hinged to the support platform 17, and the other side of the first fastener 18 is hinged to one side of the second fastener 19. The support platform 17 is also hinged to one side of the pressure block 20. When the other side of the second fastener 19 is hung on the other side of the pressure block 20, the pressure block 20 covers the switch body 61 in the accommodating groove 21.

[0033] Furthermore, the pressing block 20 is generally rectangular in shape. The second fastener 19 is generally U-shaped. There are two first fasteners 18 or two second fasteners 19, one on each side of the receiving trough 21. The support platform 17 also has pin holes on its surface, which contain locating pins 22. These pins securely connect the left and right sides of the switch body 61 to the support platform 17.

Claims

1. A travel switch response time detection device, characterized in that: The invention comprises a base (1), a guide shaft (2), an arm beam (3), a slider (4) and an oscilloscope, wherein a clamp (5) is provided on the surface of the base (1), and the clamp (5) is used to clamp a travel switch (6), and the travel switch (6) comprises a switch body (61), an actuating member (62) is provided at the upper end of the switch body (61), an output cable (63) is provided at the lower end of the switch body (61), and the oscilloscope is electrically connected to the output cable (63), the lower end of the guide shaft (2) and the lower end of the arm beam (3) are respectively fixedly connected to the base (1), and the upper end of the guide shaft (2) is arranged from bottom to top. The spring (7) and the slider (4) are sequentially passed through, the upper end of the arm beam (3) extends to the top of the clamp (5), the slider (4) is also fixed to the limit frame (8), a rack (9) is provided in the limit frame (8), the rack (9) and the gear (10) are meshed with each other, the gear (10) is coaxially fixed to one side of the movable block (11), the other side of the movable block (11) is hinged to the arm beam (3), the movable block (11) is also provided with a limit surface (12) and a friction surface (13), and the actuator (62) abuts against the limit surface (12) or the friction surface (13).

2. A travel switch response time detection device according to claim 1, characterized in that: The friction surface (13) is an arc-shaped curved surface.

3. A travel switch response time detection device according to claim 1, characterized in that: The limiting surface (12) is a flat plane.

4. A travel switch response time detection device according to claim 1, characterized in that: The gear (10) is an incomplete gear.

5. A travel switch response time detection device according to claim 1, characterized in that: The upper end of the guide shaft (2) is also threadedly connected to a locking nut (14), and the locking nut (14) is fitted together with the slider (4).

6. A travel switch response time detection device according to claim 1, characterized in that: The clamp (5) includes a support platform (17), a first fastener (18), a second fastener (19) and a pressure block (20); the base (1) is fixedly connected to the support platform (17); a surface of the support platform (17) is provided with a receiving groove (21); one side of the first fastener (18) is hinged to the support platform (17); the other side of the first fastener (18) is hinged to one side of the second fastener (19); the support platform (17) is also hinged to one side of the pressure block (20); when the other side of the second fastener (19) is hung on the other side of the pressure block (20), the pressure block (20) covers the switch body (61) in the receiving groove (21).

7. A travel switch response time detection device according to claim 6, characterized in that: The pressing block (20) is in the shape of a rectangular parallelepiped as a whole.

8. A travel switch response time detection device according to claim 6, characterized in that: The second fastener (19) is in a U-shape as a whole.

9. A travel switch response time detection device according to claim 6, characterized in that: The number of the first fasteners (18) or the second fasteners (19) is two, and the two first fasteners (18) or the two second fasteners (19) are respectively arranged on the left and right sides of the accommodating sink (21).

10. A travel switch response time detection device according to claim 6, characterized in that: The surface of the support platform (17) is also provided with a pin hole, in which a positioning pin (22) is provided. The positioning pin (22) securely connects the left and right sides of the switch body (61) to the support platform (17).

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