Proximity switch clamping device and test system
By designing the sliding block, stop lever and spring structure in the clamping module, the problem that existing clamping devices are difficult to adapt to proximity switches in different sizes and shapes is solved, and stable clamping and convenient replacement are achieved, and suitable for proximity switch testing systems.
Patent Information
- Application Number
- CN202510530933.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2025-07-08
AI Technical Summary
Existing clamping devices are difficult to stably clamp the proximity switch and are difficult to adapt to proximity switches of different sizes and shapes.
A proximity switch clamping device is designed, including a clamping module, a sliding block, a stop rod and a spring structure. Through the cooperation of the ratchet and the stop rod, stable clamping and convenient replacement of the proximity switch are achieved.
A stable clamping of proximity switches of different sizes and shapes is achieved to prevent loosening and supports quick replacement to adapt to different types of proximity switch testing.
Smart Images
Figure CN120275685A_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present application relate to the field of proximity switch testing, and particularly to a proximity switch clamping device and a testing system. Background Art
[0002] A proximity switch, also known as a non-contact proximity switch, is an ideal electronic switch sensor. When the detection plate is in the sensing area of the proximity switch, the proximity switch can quickly issue an electrical command without contact, pressure, or spark.
[0003] Before use, a proximity switch usually needs to be subjected to a temperature test. After the clamping device in the test chamber clamps the proximity switch, the temperature in the test chamber is continuously adjusted, and the sensing distance of the proximity switch at different temperatures can be determined through the output state of the proximity switch.
[0004] However, in the prior art, after the clamping device clamps the proximity switch, the proximity switch is prone to looseness, and the clamping device is difficult to adapt to proximity switches of different sizes. Summary of the Invention
[0005] In view of the above problems, the embodiments of the present application provide a proximity switch clamping device and a testing system, which overcome or at least partially solve the problems that the proximity switch is prone to looseness after being clamped by the clamping device, and the clamping device is difficult to adapt to proximity switches of different shapes and sizes.
[0006] In a first aspect of the embodiments of the present application, a proximity switch clamping device is provided, including: a plurality of clamping modules, a rear seat, and a cover plate. The cover plate covers the rear seat and the clamping modules. The clamping module includes a sliding block, a first spring, a pressing rod, a second spring, a stopping rod, and a first rotating shaft. The rear seat is provided with a mounting hole, a second groove, and a sliding groove. The mounting hole, the second groove, and the sliding groove are communicated with each other. The mounting hole is used for placing the proximity switch, the second groove is used for placing the stopping rod and the first rotating shaft, and the sliding groove is used for cooperating with the sliding block to slide.
[0007] One end of the sliding block facing the mounting hole is provided with a receiving hole. The side surface of the sliding block is provided with ratchet teeth. The first spring is located in the receiving hole. The first end of the first spring is connected to the sliding block, and the second end of the first spring abuts against the first end of the pressing rod. The second end of the pressing rod is used for pressing the proximity switch.
[0008] The stopping rod rotates around the first rotating shaft. The first end of the second spring is connected to the groove wall of the second groove, and the second end of the second spring is connected to the side surface of the stopping rod.
[0009] When the clamping module clamps the proximity switch, the end of the stopping rod abuts against the ratchet teeth under the combined action of the pressure of the sliding block and the elastic force of the second spring, and the second end of the pressing rod abuts against the proximity switch under the elastic force of the first spring.
[0010] The stop lever rotates around the first rotating shaft in the direction close to the second spring, the end of the stop lever separates from the ratchet tooth, and the sliding block slides in the direction away from the proximity switch to replace the proximity switch.
[0011] In this embodiment, by providing the ratchet tooth and the stop lever, when the sliding block slides in the direction close to the proximity switch under an external force, the stop lever will not affect the sliding of the sliding block. After removing the external force, when the clamping module clamps the proximity switch, the end of the stop lever abuts against the ratchet tooth under the combined action of the pressure of the sliding block and the elastic force of the second spring. Under the action of the stop lever, the sliding block can be stabilized at the current position to clamp the proximity switch. Moreover, the second end of the pressing rod abuts against the proximity switch under the elastic force of the first spring. Thus, when the sliding block is stabilized at the current position to clamp the proximity switch, the pressing rod can further press the proximity switch through the elastic deformation of the first spring to prevent the proximity switch from loosening.
[0012] Under an external force, the stop lever rotates around the first rotating shaft in the direction close to the second spring, the end of the stop lever separates from the ratchet tooth, and the sliding block slides in the direction away from the proximity switch to replace the proximity switch. After replacing the proximity switch, the foregoing steps can be repeated to clamp the replaced proximity switch. Thus, proximity switches of different sizes can be accommodated.
[0013] In an alternative manner, the proximity switch clamping device further includes a limiting rod. The sliding block is provided with a limiting hole, and the limiting rod passes through the limiting hole and is connected to the pressing rod.
[0014] In this embodiment, the limiting hole can limit the movement range of the limiting rod, and further limit the movement range of the pressing rod connected to the limiting rod. Thus, the pressing rod can be prevented from falling off from the receiving hole of the sliding block.
[0015] In an alternative manner, one end of the limiting rod is provided with a thread, and the side of the pressing rod facing the limiting hole is provided with a threaded hole. The end of the limiting rod with the thread passes through the limiting hole and is received in the threaded hole so that the limiting rod is threadedly connected to the pressing rod.
[0016] In an alternative manner, the proximity switch clamping device further includes a second rotating shaft, a cam and a first handle. The first end of the second rotating shaft is connected to the first handle, and the second end of the second rotating shaft is connected to the cam. By rotating the first handle, the first handle drives the cam to rotate from the first position to the second position to push the stop lever to rotate around the first rotating shaft in the direction close to the second spring.
[0017] In an alternative manner, the proximity switch clamping device further includes a buffer pad. The second end of the pressing rod is provided with a blind hole, and the buffer pad is provided in the blind hole. The second end of the pressing rod abuts against the proximity switch through the buffer pad.
[0018] In this embodiment, by providing the buffer pad, the second end of the pressing rod can be prevented from directly contacting the proximity switch and damaging the proximity switch.
[0019] In an alternative embodiment, the proximity switch clamping device further includes a second handle disposed on the sliding block, and the second handle is used to push the sliding block to slide in a direction away from / towards the proximity switch.
[0020] In an alternative embodiment, the proximity switch clamping device further includes a third handle disposed on the stop rod, and the third handle is used to push the stop rod to rotate about the first rotating shaft in a direction towards the second spring.
[0021] In an alternative embodiment, the bottom of the mounting hole is V-shaped.
[0022] In this way, when the proximity switch is circular, it is not easy to shake in the mounting hole.
[0023] A second aspect of the embodiments of the present application provides a proximity switch testing system, which includes a testing box, a position feedback circuit, an input detection circuit, a temperature detection circuit, and a motor control circuit. The testing box includes a motor, a detection board, a sliding module, and the proximity switch clamping device provided in the first aspect of the embodiments of the present application. The motor is used to drive the detection board to approach / away from the proximity switch clamping device along the sliding module. The position feedback circuit is also connected to the motor, and the position feedback circuit is used to determine the distance between the detection board and the proximity switch clamping device. The input detection circuit is connected to the output of the proximity switch. The temperature detection circuit is used to detect the temperature inside the testing box. The motor control circuit is used to control the working state of the motor.
[0024] The proximity switch testing system provided by the embodiments of the present application can stably clamp proximity switches of different shapes and sizes and determine their sensing distances at different temperatures.
[0025] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the description. In order to make the above and other purposes, features, and advantages of the embodiments of the present application more obvious and understandable, the specific embodiments of the present application are hereinafter specifically exemplified. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0027] Figure 1 Structural schematic diagram of a clamping module and a rear seat provided by some embodiments of the present application.
[0028] Figure 2Exploded view of the proximity switch clamping device provided by some embodiments of the present application.
[0029] Figure 3 Schematic structural diagram of the clamping module provided by some embodiments of the present application.
[0030] Figure 4 For Figure 3 Cross-sectional view.
[0031] Figure 5 Schematic structural diagram when the stop rod and the ratchet of the clamping module provided by some embodiments of the present application are separated.
[0032] Figure 6 Schematic structural diagram when the stop rod and the ratchet of the clamping module provided by some embodiments of the present application are in contact.
[0033] Figure 7 Schematic structural diagram when the end of the stop rod provided by some embodiments of the present application is square.
[0034] Figure 8 Front view of the proximity switch clamping device provided by some embodiments of the present application.
[0035] Figure 9 Partial schematic structural diagram of the proximity switch test system provided by some embodiments of the present application.
[0036] Figure 10 Another partial schematic structural diagram of the proximity switch test system provided by some embodiments of the present application. Detailed implementation manners
[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.
[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0039] The terms "including" and "having" and any variations thereof in the description and claims of this application and the accompanying drawings are intended to cover without excluding other elements. The word "a" or "an" does not exclude the presence of a plurality.
[0040] References to "embodiments" in this application mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0041] In addition, the terms "first", "second", etc. in the description and claims of this application or in the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.
[0042] In the description of this application, unless otherwise specified, the meaning of "a plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups).
[0043] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, "connected" or "coupled" of a mechanical structure may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a screw, bolt, or other fixing member; a physical connection may also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection may also be an integral connection, such as a welded, bonded, or integrally formed connection. "Connected" or "coupled" of a circuit structure may refer to not only a physical connection but also an electrical connection or a signal connection. For example, it may be a direct connection, that is, a physical connection, or may be indirectly connected through at least one intermediate element, as long as the circuit is connected, and may also be a connection inside two elements; a signal connection may refer to not only a signal connection through a circuit but also a signal connection through a media medium, such as radio waves. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0044] A proximity switch clamping device provided by an embodiment of the present application includes: a plurality of clamping modules, a rear seat 01, and a cover plate 02. Figure 1 It is a schematic structural diagram of a clamping module and a rear seat provided for some embodiments of the present application.
[0045] Figure 2 It is an exploded view of a proximity switch clamping device provided for some embodiments of the present application. Figure 3 It is a schematic structural diagram of a clamping module provided for some embodiments of the present application. Figure 4 is Figure 3 cross-sectional view of. Figure 5Schematic diagram of the structure when the stop rod of the clamping module provided by some embodiments of the present application is separated from the ratchet teeth. Figure 6 Schematic diagram of the structure when the stop rod of the clamping module provided by some embodiments of the present application abuts against the ratchet teeth. Figure 1 The schematic diagram showing 8 clamping modules is shown in reference Figures 1 - 4 , the cover plate 02 covers the rear seat 01 and the clamping module. The clamping module includes a sliding block 03, a first spring 04, a pressure rod 05, a second spring 06, a stop rod 07 and a first rotating shaft 08. The rear seat 01 is provided with a mounting hole 011, a second groove 012 and a sliding groove 013. The mounting hole 011, the second groove 012 and the sliding groove 013 communicate with each other. The mounting hole 011 is a through hole and is used to place the proximity switch 09. The second groove 012 is used to place the stop rod 07 and the first rotating shaft 08. The sliding groove 013 is used to cooperate with the sliding block 03 to slide.
[0046] One end of the sliding block 03 facing the mounting hole 011 is provided with a receiving hole. The side surface of the sliding block 03 is provided with ratchet teeth 031. The first spring 04 is located in the receiving hole. The first end of the first spring 04 is connected to the sliding block 03, and the second end of the first spring 04 abuts against the first end of the pressure rod 05. The second end of the pressure rod 05 is used to press the proximity switch 09.
[0047] The stop rod 07 rotates around the first rotating shaft 08. The first rotating shaft 08 can be fixed in the second groove 012. The first end of the second spring 06 is connected to the groove wall 10 of the second groove 012, and the second end of the second spring 06 is connected to the side surface of the stop rod 07.
[0048] Reference Figure 6 , when the clamping module clamps the proximity switch 09, the end of the stop rod 07 abuts against the ratchet teeth 031 under the combined action of the pressure of the sliding block 03 and the elastic force of the second spring 06, and the second end of the pressure rod 05 abuts against the proximity switch 09 under the elastic force of the first spring 04.
[0049] In practical applications, Figure 7 Schematic diagram of the structure when the end of the stop rod provided by some embodiments of the present application is square. As Figure 6 and Figure 7 shown, the end of the stop rod 07 can be square, or the end of the stop rod 07 is stepped. The stepped end of the stop rod 07 can fit with the ratchet teeth 031, so that the sliding block 03 can be better stabilized at the current position to clamp the proximity switch 09. The stop rod 07 and the first rotating shaft 08 can also be an integrally formed structure.
[0050] Reference Figure 5, the stop lever 07 rotates around the first rotating shaft 08 in the direction close to the second spring 06, the second spring 06 is compressed by the stop lever 07, the end of the stop lever 07 is separated from the ratchet tooth 031, and the sliding block 03 slides away from the proximity switch 09 along the direction away from the stop lever 07 to replace the proximity switch 09.
[0051] In this embodiment, by setting the ratchet tooth 031 and the stop lever 07, when the sliding block 03 slides in the direction close to the proximity switch 09 under an external force, the stop lever 07 will not affect the sliding of the sliding block 03. After removing the external force, when the clamping module clamps the proximity switch 09, the end of the stop lever 07 abuts against the ratchet tooth 031 under the combined action of the pressure of the sliding block 03 and the elastic force of the second spring 06. Under the action of the stop lever 07, the sliding block 03 can be stabilized at the current position to clamp the proximity switch 09. Moreover, the second end of the pressure lever 05 abuts against the proximity switch 09 under the elastic force of the first spring 04. Thus, when the sliding block 03 is stabilized at the current position to clamp the proximity switch 09, the pressure lever 05 can further press the proximity switch 09 through the elastic deformation of the first spring 04 to prevent the proximity switch 09 from loosening.
[0052] Under an external force, the stop lever 07 rotates around the first rotating shaft 08 in the direction close to the second spring 06, the end of the stop lever 07 is separated from the ratchet tooth 031, and the sliding block 03 slides in the direction away from the proximity switch 09 to replace the proximity switch 09. After replacing the proximity switch 09, the foregoing steps can be repeated, that is, the sliding block 03 slides in the direction close to the replaced proximity switch 09 under an external force until the second end of the pressure lever 05 contacts the replaced proximity switch 09 to clamp the replaced proximity switch 09, and the pressure lever 05 further presses the replaced proximity switch 09 through the elastic deformation of the first spring 04. Thus, the proximity switch clamping device provided by the embodiment of the present application can adapt to proximity switches 09 of different sizes.
[0053] In some embodiments, the proximity switch clamping device further includes a limit rod 11. The sliding block 03 is provided with a limit hole 032, and the limit hole 032 is an oblong hole. The limit rod 11 passes through the limit hole 032 and is connected to the pressure lever 05.
[0054] In this embodiment, the limit hole 032 can limit the movement range of the limit rod 11, and further limit the movement range of the pressure lever 05 connected to the limit rod 11. Thus, it can prevent the pressure lever 05 from falling off from the receiving hole of the sliding block 03.
[0055] In practical applications, one end of the limit rod 11 is provided with a thread, and the side of the pressure lever 05 facing the limit hole 032 is provided with a threaded hole. The threaded end of the limit rod 11 passes through the limit hole 032 and is received in the threaded hole so that the limit rod 11 is threadedly connected to the pressure lever 05.
[0056] In some embodiments, the proximity switch clamping device further includes a second rotating shaft 12, a cam 13, and a first handle 14. The first end of the second rotating shaft 12 is connected to the first handle 14, and the second end of the second rotating shaft 12 is connected to the cam 13. By rotating the first handle 14, the first handle 14 drives the cam 13 to rotate from a first position to a second position. When the cam 13 rotates from the first position to the second position, the portion with a longer radius in the cam 13 contacts the stop lever 07, and the movement trajectory of the cam 13 interferes with the stop lever 07 to push the stop lever 07 to rotate around the first rotating shaft 08 in a direction close to the second spring 06.
[0057] In some embodiments, the proximity switch clamping device further includes a third handle provided on the stop lever 07, and the third handle is used to push the stop lever 07 to rotate around the first rotating shaft 08 in a direction close to the second spring 06.
[0058] In some embodiments, the proximity switch clamping device further includes a buffer pad 15. A blind hole is provided at the second end of the pressure rod 05, and the buffer pad 15 is provided in the blind hole. The buffer pad 15 can be adhesively bonded in the blind hole, and the second end of the pressure rod 05 abuts against the proximity switch 09 through the buffer pad 15.
[0059] In this embodiment, by providing the buffer pad 15, it can be prevented that the second end of the pressure rod 05 directly contacts the proximity switch 09 and damages the proximity switch 09.
[0060] In some embodiments, the proximity switch clamping device further includes a second handle 16 provided on the sliding block 03, and the second handle 16 is used to push the sliding block 03 to slide in a direction away from / towards the proximity switch 09.
[0061] In practical applications, the second handle 16 and the sliding block 03 may also be an integrally formed structure. The embodiment of the present application does not limit the shape of the second handle 16, as long as when an external force is applied to the second handle 16, the second handle 16 can stably drive the sliding block 03 to slide in a direction close to / away from the proximity switch 09.
[0062] In some embodiments, the bottom of the mounting hole 011 is V-shaped. The proximity switch 09 may be circular or square in structure. The bottom of the mounting hole 011 is V-shaped. When the proximity switch 09 is circular, it is not easy to shake in the mounting hole 011.
[0063] Figure 8 Is the front view of the proximity switch clamping device provided by some embodiments of the present application, referring to Figure 2 and Figure 8, in practical applications, the cover plate 02 is also provided with a terminal 17, a socket 18 and a wire hole, and the rear seat 01 is provided with a wire groove 19. The terminal 17, the wire hole and the wire groove 19 are arranged correspondingly. The proximity switch 09 is connected to the socket 18 through the terminal 17 and the wire hole, and the wire groove 19 is used to accommodate the connecting wire between the proximity switch 09 and the socket 18.
[0064] The cover plate 02 may be provided with a plurality of sockets 18, and the plurality of sockets 18 may be used as a power supply interface, an output interface of the proximity switch 09 and a reserved interface respectively.
[0065] The cover plate 02 is further provided with a first through hole 021, a second through hole 022 and a third through hole 023. The first through hole 021 is arranged corresponding to the sliding groove 013 for exposing the second handle 16. The second through hole 022 is arranged corresponding to the mounting hole 011 for exposing the proximity switch 09. The third through hole 023 is arranged corresponding to the second rotating shaft 12 for exposing the second rotating shaft 12 to connect the first handle 14.
[0066] A proximity switch clamping device provided by an embodiment of the present application may further include a bolt 20. The cover plate 02 is provided with a fourth through hole, and the rear seat 01 is provided with a connection hole 014. The connection hole 014 is a threaded hole. The bolt 20 passes through the fourth through hole on the cover plate 02 and is then accommodated in the connection hole 014 to make the cover plate 02 cover the rear seat 01.
[0067] Another embodiment of the present application further provides a proximity switch testing system. Figure 9 is a partial structural schematic diagram of a proximity switch testing system provided by some embodiments of the present application. Figure 10 is another partial structural schematic diagram of a proximity switch testing system provided by some embodiments of the present application. Refer to Figure 9 and Figure 10 , the system includes a test box, a position feedback circuit 31, an input detection circuit 32, a temperature detection circuit 33 and a motor control circuit 34. The test box includes a motor 35, a detection board 36, a sliding module 37 and the proximity switch clamping device provided by the foregoing embodiment of the present application. The motor 35 is used to drive the detection board 36 to approach / leave the proximity switch clamping device along the sliding module 37. The position feedback circuit 31 is also connected to the motor 35, and the position feedback circuit 31 is used to determine the distance between the detection board 36 and the proximity switch clamping device. The input detection circuit 32 is connected to the output of the proximity switch 09. The temperature detection circuit 33 is used to detect the temperature inside the test box and may be connected to the output of the temperature sensor inside the test box. The motor control circuit 34 is used to control the working state of the motor 35.
[0068] Refer to Figure 1 and Figure 8, a first avoidance hole 41 may also be provided on the rear seat 01 of the proximity switch clamping device, and a second avoidance hole 42 may be provided on the cover plate 02. Both the first avoidance hole 41 and the second avoidance hole 42 are used to avoid the sliding module 37.
[0069] It should be noted that the input detection circuit 32 is connected to the output of the proximity switch 09, specifically, it may be connected to the socket 18 which serves as the output interface of the proximity switch 09. By providing the through-hole type mounting hole 011, the first avoidance hole 41 and the second avoidance hole 42, the proximity switch 09 can be in zero-distance contact with the detection board 36, and the test results are more accurate.
[0070] Specifically, the input detection circuit 32 may further include a switch input detection sub-circuit and an analog input detection sub-circuit. For example, the switch input detection sub-circuit is used to detect NPN-type, PNP-type or push-pull proximity switches. For example, the analog input detection sub-circuit is used to detect analog output type proximity switches such as 4-20 mA, 1-5 V and 0-10 V.
[0071] Reference Figure 9 , during the test, the proximity switch clamping device can test 8 proximity switches 09 of different types and different sizes at the same time. The detection board 36 includes 8 detected objects, and the 8 detected objects respectively correspond to the 8 proximity switches 09 of different types and different sizes one by one. The motor control circuit 34 controls the motor 35 to drive the detection board 36 to approach / away from the proximity switch clamping device along the sliding module 37. The position feedback circuit 31 continuously feeds back the distance between the detection board 36 and the proximity switch clamping device. Combining with the output of the input detection circuit 32, the sensing distance of the proximity switch 09 at the current temperature can be determined. For example, for a PNP-type proximity switch 09, when the distance between the detection board 36 and the proximity switch clamping device is less than or equal to 10 mm, the outputs of the switch input detection sub-circuit are all high levels, and it can be understood that the sensing distance of this proximity switch 09 at the current temperature is 10 mm. Another example, for an inductive proximity switch 09, when the distance between the detection board 36 and the proximity switch clamping device is less than or equal to 20 mm, the output of the analog input detection sub-circuit is 4-20 mA, and when the distance between the detection board 36 and the proximity switch clamping device is greater than 20 mm, the output of the analog input detection sub-circuit remains 20 mA unchanged, and it can be understood that the sensing distance of this proximity switch 09 at the current temperature is 20 mm. Adjust the temperature in the test chamber so that the temperature range is -25°C - 70°C, and the sensing distances of the proximity switches 09 to be tested at different temperatures can be determined. After the sensing distances of the current 8 proximity switches 09 at -25°C - 70°C are tested, the door of the test chamber can be opened, and an external force is applied to the first handle 14 to push the stop rod 07 to rotate around the first rotating shaft 08 in the direction close to the second spring 06. The end of the stop rod 07 is separated from the ratchet tooth 031, and the sliding block 03 slides in the direction away from the proximity switch 09 to replace the proximity switch 09.
[0072] In practical applications, the proximity switch testing system provided by the embodiments of the present application may further include a controller 38, a host computer, a power supply circuit, a support frame 39, and a pallet 40. The power supply circuit is used to supply power to the proximity switch testing system. The support frame 39 is used to support the rear seat 01, the cover plate 02, and the detection board 36. The pallet 40 is used to place the motor 35, the detection board 36, the sliding module 37, and the proximity switch clamping device provided by the foregoing embodiments of the present application. The controller 38 can determine the distance between the detection board 36 and the proximity switch clamping device through the position feedback circuit 31; the controller 38 can determine the sensing distance of the proximity switch 09 at different temperatures based on the distance between the detection board 36 and the proximity switch clamping device, the output of the input detection circuit 32, and the output of the temperature detection circuit 33; the controller 38 can control the switch and rotation speed of the motor 35 through the motor control circuit 34. The controller 38 can also be connected to the host computer, and the controller 38 transmits the output of the input detection circuit 32 and the output of the temperature detection circuit 33 to the host computer for remote viewing, data recording, and data analysis.
[0073] The proximity switch testing system provided by the embodiments of the present application can stably clamp proximity switches 09 of different shapes and sizes and determine their sensing distances at different temperatures.
[0074] Those skilled in the art can understand that although some of the embodiments herein include certain features included in other embodiments, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.
[0075] As described above, the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A proximity switch clamping device, characterized in that, The proximity switch clamping device includes: a plurality of clamping modules, a rear seat, and a cover plate; The cover plate covers the rear seat and the clamping modules. The clamping module includes a sliding block, a first spring, a pressure rod, a second spring, a stop rod, and a first rotating shaft; The rear seat is provided with a mounting hole, a second groove, and a sliding groove. The mounting hole, the second groove, and the sliding groove communicate with each other. The mounting hole is used for placing the proximity switch, the second groove is used for placing the stop rod and the first rotating shaft, and the sliding groove is used for cooperating with the sliding block to slide; One end of the sliding block facing the mounting hole is provided with a receiving hole. The side surface of the sliding block is provided with ratchet teeth. The first spring is located in the receiving hole. The first end of the first spring is connected to the sliding block, and the second end of the first spring abuts against the first end of the pressure rod. The second end of the pressure rod is used for pressing the proximity switch; The stop rod rotates around the first rotating shaft. The first end of the second spring is connected to the groove wall of the second groove, and the second end of the second spring is connected to the side surface of the stop rod; When the clamping module clamps the proximity switch, the end of the stop rod abuts against the ratchet teeth under the combined action of the pressure of the sliding block and the elastic force of the second spring, and the second end of the pressure rod abuts against the proximity switch under the elastic force of the first spring; The stop rod rotates around the first rotating shaft in the direction close to the second spring, and the end of the stop rod is separated from the ratchet teeth. The sliding block slides in the direction away from the proximity switch to replace the proximity switch.
2. The proximity switch clamping device according to claim 1, wherein The proximity switch clamping device further includes a limiting rod. The sliding block is provided with a limiting hole, and the limiting rod passes through the limiting hole and is connected to the pressure rod.
3. The proximity switch clamping device according to claim 2, characterized in that, One end of the limiting rod is provided with a thread. One side of the pressure rod facing the limiting hole is provided with a threaded hole. The threaded end of the limiting rod passes through the limiting hole and is received in the threaded hole, so that the limiting rod is threadedly connected to the pressure rod.
4. The proximity switch clamping device according to claim 1, characterized in that, The proximity switch clamping device further includes a second rotating shaft, a cam, and a first handle. The first end of the second rotating shaft is connected to the first handle, and the second end of the second rotating shaft is connected to the cam. Rotating the first handle drives the cam to rotate from a first position to a second position to push the stop rod to rotate around the first rotating shaft in the direction close to the second spring.
5. The proximity switch clamping device according to claim 1, characterized in that, The proximity switch clamping device further includes a buffer pad. The second end of the pressure rod is provided with a blind hole, and the buffer pad is arranged in the blind hole. The second end of the pressure rod abuts against the proximity switch through the buffer pad.
6. The proximity switch clamping device according to claim 1, characterized in that, The proximity switch clamping device further includes a second handle. The second handle is arranged on the sliding block and is used for pushing the sliding block to slide in the direction away from / close to the proximity switch.
7. The proximity switch clamping device according to claim 1, characterized in that, The proximity switch clamping device further includes a third handle. The third handle is arranged on the stop rod and is used for pushing the stop rod to rotate around the first rotating shaft in the direction close to the second spring.
8. The proximity switch clamping device according to claim 1, characterized in that, The bottom of the mounting hole is V-shaped.
9. A proximity switch testing system, characterized in that, The system includes a test chamber, a position feedback circuit, an input detection circuit, a temperature detection circuit, and a motor control circuit; The test chamber includes a motor, a detection board, a sliding module, and a proximity switch clamping device as described in any one of claims 1-8; The motor is used to drive the detection board to approach / leave the proximity switch clamping device along the sliding module; The position feedback circuit is also connected to the motor, and the position feedback circuit is used to determine the distance between the detection board and the proximity switch clamping device; The input detection circuit is connected to the output of the proximity switch; The temperature detection circuit is used to detect the temperature inside the test chamber; The motor control circuit is used to control the working state of the motor.