Spring coating electric leakage testing mechanism

Abstract

The utility model relates to a spring coating electric leakage testing mechanism which comprises a base, a supporting plate is arranged on one side of the base, a mounting plate is arranged on the upper side of the supporting plate, an electrode base is detachably arranged on the base, and a pressing device capable of moving up and down is arranged on the mounting plate right above the electrode base. Two signal terminals are arranged on the upper surface of the base, one signal terminal is electrically connected with the pressing device through a first wire, the other signal terminal is electrically connected with the electrode base through a second wire, and the two signal terminals are connected with an external current detection device; during use, the test spring is arranged on the electrode base, and the pressing device moves downwards to compress the spring, so that a circuit on one side of the test electrode is communicated with a circuit on one side of the pressing device through the spring to form a closed loop.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage testing, in particular to a spring coating leakage testing mechanism. Background Art

[0002] When a coated spring needs insulation testing, it is often necessary to use specialized testing equipment to perform leakage testing on the coated spring. However, existing spring leakage testing equipment is complex to operate during the testing process, has relatively low test accuracy, and relatively low detection efficiency. Utility Model Content

[0003] The technical problem to be solved by the present invention is that the existing film-coated spring leakage detection device has a complex structure, complex operation, and low detection efficiency and detection accuracy. In view of the above-mentioned defects of the prior art, a spring coating leakage test mechanism is provided.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: constructing a spring coating leakage testing mechanism, including a base, a support plate is provided on one side of the base, and a mounting plate is provided on the upper side of the support plate, an electrode base is detachably provided on the base, and a downward pressing device that can move up and down is provided on the mounting plate directly above the electrode base, and two signal terminals are provided on the upper surface of the base, one of the signal terminals is electrically connected to the downward pressing device through a first wire, and the other signal terminal is electrically connected to the electrode base through a second wire, and the two signal terminals are respectively connected to the positive and negative poles of the detection instrument; when in use, the spring to be tested is provided on the electrode base, and the downward pressing device moves downward to compress the spring, so as to connect the circuit on one side of the electrode base with the circuit on one side of the downward pressing device through the spring to be tested, and whether a loop is formed is judged by the high and low levels displayed on the detection instrument.

[0005] Preferably, during the test, if the detection instrument displays a high level, the spring to be tested connects the circuit on one side of the electrode base with the circuit on one side of the pressing device to form a closed loop, and the spring leaks electricity; if the detection instrument displays a low level, no current passes, and the spring insulation does not leak electricity.

[0006] Preferably, a spring placement hole is provided on the upper surface of the electrode base, and during testing, the spring is inserted into the spring placement hole.

[0007] Preferably, the downward pressing device includes a probe tube, a probe and a reset spring. The probe tube is fixedly arranged on the mounting plate, an insulating sleeve is arranged between the probe tube and the mounting plate, the probe is arranged in the probe tube, and the end of the probe exposed at the upper end of the probe tube is fixedly provided with a pressure block, and the end of the probe exposed at the lower end of the probe tube is fixedly connected to the electrode contact. The reset spring is sleeved on the probe, and the upper end of the reset spring abuts against the lower surface of the pressure block and the lower end abuts against the spring support platform in the probe tube. The reset spring makes the probe in a high position when it is not pressed down.

[0008] Preferably, the probe is a telescopic probe, comprising a fixed section and a telescopic section, wherein the fixed section is a cylindrical structure, and an internal thread is provided on the inner wall of the cylindrical structure, and the telescopic section is a columnar structure, and an external thread is provided on the outer wall of the telescopic section. The telescopic section is connected to the fixed section by a thread, and the length of the probe can be changed by adjusting the number of threads that the telescopic section rotates into the cylindrical structure.

[0009] Preferably, the return spring is sleeved on the fixed section, the electrode contact is provided at the lower end of the telescopic section, and the electrode contact is electrically connected to the telescopic section.

[0010] Preferably, the first conductive wire is electrically connected to the fixed section of the probe.

[0011] Preferably, the mechanism has several electrode bases with different spring placement hole depths and diameters. When in use, the corresponding electrode base is selected according to the size of the spring to be tested.

[0012] The beneficial effects of the present invention are:

[0013] 1. The present invention has a preset detection circuit. During the test, you only need to place the spring to be tested in the detection position, compress the spring by the pressing device, and use the detection instrument to detect whether the spring can connect the detection circuit to determine whether the spring is leaking.

[0014] 2. The probe in this utility model adopts a telescopic structure. The telescopic length of the probe can be adjusted according to the length of the spring to be measured, so that the distance between the pressing device and the electrode base is adapted to the length of the spring, and the spring can be taken and placed during the test;

[0015] 3. The utility model has several electrode bases with different spring placement hole depths and diameters. When in use, the corresponding electrode base is selected according to the size of the spring to be tested, so that the device can be applied to and detect springs of different specifications and models. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0017] Figure 1 It is an exploded view of the entire utility model;

[0018] Figure 2 A three-dimensional diagram of a spring to be tested placed in the utility model and waiting for testing;

[0019] Figure 3 It is a three-dimensional diagram of the utility model;

[0020] Figure 4 It is a three-dimensional diagram of the utility model in the detection state.

[0021] Figure 5 This is a flow chart for detecting covered springs using this mechanism. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] A preferred embodiment of the utility model is a spring coating leakage test mechanism. When in use, the spring is compressed in the spring placement hole through the device, and the spring contacts the electrode base and the electrode contact. If there is leakage in the spring, the spring can connect the circuit on one side of the electrode base with the circuit on the other side of the electrode contact to form a closed loop, and there is current passing through the loop, that is, whether the spring is leaking can be judged by whether there is current in the circuit.

[0024] In this embodiment, if Figure 1-5 As shown, the mechanism includes a base 10, a support plate 20 is provided on one side of the base 10, a mounting plate 30 is provided on the upper side of the support plate 20, the support plate 30 is fixedly connected to the upper edge of the base 10 by bolts, and the edge of the lower surface of the mounting plate 30 is fixedly connected to the upper end of the support plate 20 by bolts.

[0025] An electrode base mounting hole 101 is provided in the middle or near the middle of the upper surface of the base 10. An electrode base 40 is detachably mounted within the electrode base mounting hole 101. A downwardly movable pressing device 50 is provided on the mounting plate 30 directly above the electrode base 40. A spring placement hole 401 is provided on the upper surface of the electrode base 40. During testing, the spring 1 to be tested is inserted into the spring placement hole 401, and the downward pressing device 50 moves downward to fully compress the spring 1 to be tested into the spring placement hole 401.

[0026] Two signal terminals (102a, 102b) are provided on the upper surface of the base 10, wherein one signal terminal 102a is electrically connected to the pressing device 50 via a first wire 103, and the other signal terminal 102b is electrically connected to the electrode base 40 via a second wire 104. The two signal terminals (102a, 102b) are respectively connected to the positive and negative poles of a detection instrument (the detection instrument is a common detection device in the prior art, so the specific structure of the detection instrument is not shown in the accompanying drawings). In this way, when the mechanism is in use, the spring 1 to be tested is set on the electrode base 40, and the pressing device 50 moves downward to compress the spring 1 to be tested, so as to connect the circuit on one side of the electrode base 40 with the circuit on the other side of the pressing device 50 through the spring 1 to be tested. Whether a circuit is formed is determined by the high and low levels displayed by the detection instrument. If a circuit is formed, the spring is leaking electricity, otherwise the spring is insulated.

[0027] It should be noted that the test instrument used in the above embodiment is an HP4263A LCR meter. During testing, if the test instrument displays a high level, the spring 1 under test connects the circuit on the electrode base 40 side with the circuit on the pressing device 50 side to form a closed loop, and the spring is leaking electricity. If the test instrument displays a low level, no current is flowing, and the spring is insulated and leak-proof.

[0028] like Figure 1As shown, the pressing device 50 includes a probe barrel 501, a probe 502, and a return spring 503. The probe barrel 501 is fixedly mounted on the mounting plate 30, so that the probe barrel 501 is relatively fixed on the mounting plate 30. An insulating sleeve is provided between the probe barrel 501 and the mounting plate 30 to ensure that the probe barrel 501 and the mounting plate 30 are insulated, thereby avoiding measurement errors caused by electrical conduction between the probe barrel 501 and the mounting plate 30. The probe 502 is disposed in the probe barrel 501, and both ends of the probe 502 are exposed outside the probe barrel 501. A pressure block 504 is fixedly disposed on one end of the probe 502 exposed at the upper end of the probe barrel 501, and an electrode contact 505 is fixedly connected to one end of the probe 502 exposed at the lower end of the probe barrel 501. The pressure block 504 is fixedly connected to the probe 502 by a bolt. Of course, a thread can also be provided on the upper end of the probe 502, and a threaded hole can be provided on the lower surface of the pressure block 504, so that the probe 502 and the pressure block 504 are fixedly connected by threads. A return spring 503 is sleeved on the probe 502, and the upper end of the return spring 503 abuts against the lower surface of the pressure block 504, and the lower end abuts against the spring support platform in the probe barrel 501. The return spring causes the probe to be in a high position when not pressed down, thereby forming a larger spring access space between the pressing device and the electrode base.

[0029] It should be noted that the spring support platform is fixedly connected to the inner wall of the probe tube 501 near the lower end. The spring support platform is annular, so that the support platform can provide support for the reset spring 503 and ensure that the probe 502 passes through the center of the support platform.

[0030] To adapt the mechanism to springs of varying lengths, the probe 502 is a telescopic probe. This allows the distance between the lower end of the pressing device 50 and the electrode base 40 to be varied by changing the telescopic length of the probe 502. Specifically, the probe 502 comprises a fixed section 5021 and a telescopic section 5022. The fixed section 5021 is a cylindrical structure with internal threads on its inner wall, while the telescopic section 5022 is a columnar structure with external threads on its outer wall. The telescopic section 5022 is threadedly connected to the fixed section 5021, and the length of the probe 502 can be varied by adjusting the number of threads that the telescopic section 5022 rotates into the cylindrical structure.

[0031] In some embodiments, the return spring 503 is mounted on the fixed section 5021 , the electrode contact 505 is disposed at the lower end of the telescopic section 5022 , and the electrode contact 505 is electrically connected to the telescopic section 5022 , and the first wire 103 is electrically connected to the probe 502 .

[0032] It should be noted that a socket is provided on the upper side of the electrode contact 505 , and the lower end of the telescopic end 5022 can be inserted into the socket to achieve the connection between the electrode contact 505 and the probe 502 .

[0033] The mechanism has several electrode bases with different spring hole depths and diameters. When in use, the corresponding electrode base is selected according to the size of the spring to be tested.

[0034] like Figure 2-5 As shown, the specific steps for using this mechanism to test whether the coated spring has leakage are as follows:

[0035] S1, initial state;

[0036] S2, place the spring to be tested into the spring placement hole on the electrode base;

[0037] S3, the pressing device is pressed down to compress the spring to be tested and the test begins;

[0038] S4: After the test is completed, the pressing device is released. The pressing device moves upward under the action of the return spring, and the spring to be tested is stretched to its natural state. The information from the detection instrument is used to determine whether the spring is leaking electricity.

[0039] S5, remove the spring to be tested and complete the test.

[0040] It should be understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A spring coating leakage test mechanism, comprising a base, a support plate provided on one side of the base, and a mounting plate provided on the upper side of the support plate, characterized in that: An electrode base is detachably provided on the base, and a pressing device that can move up and down is provided on the mounting plate directly above the electrode base. Two signal terminals are also provided on the upper surface of the base, one of which is electrically connected to the pressing device through a first wire, and the other signal terminal is electrically connected to the electrode base through a second wire, and the two signal terminals are respectively connected to the positive and negative poles of the detection instrument; when in use, the spring to be tested is provided on the electrode base, and the pressing device moves downward to compress the spring, so as to connect the circuit on one side of the electrode base with the circuit on one side of the pressing device through the spring to be tested, and whether a loop is formed is determined by the high and low levels displayed on the detection instrument.

2. A spring coating leakage test mechanism according to claim 1, characterized in that: During the test, if the detection instrument displays a high level, the spring to be tested connects the circuit on one side of the electrode base with the circuit on the side of the pressing device to form a closed loop, and the spring leaks electricity; if the detection instrument displays a low level, no current passes, and the spring insulation does not leak electricity.

3. A spring coating leakage test mechanism according to claim 1, characterized in that: A spring placement hole is provided on the upper surface of the electrode base. During testing, the spring is inserted into the spring placement hole.

4. A spring coating leakage test mechanism according to claim 3, characterized in that: The downward pressing device includes a probe tube, a probe and a reset spring. The probe tube is fixedly arranged on the mounting plate. An insulating sleeve is arranged between the probe tube and the mounting plate. The probe is arranged in the probe tube, and the end of the probe exposed at the upper end of the probe tube is fixedly provided with a pressure block, and the end of the probe exposed at the lower end of the probe tube is fixedly connected to the electrode contact. The reset spring is sleeved on the probe, and the upper end of the reset spring abuts against the lower surface of the pressure block and the lower end abuts against the spring support platform in the probe tube. The reset spring makes the probe in a high position when it is not pressed down.

5. A spring coating leakage test mechanism according to claim 4, characterized in that: The probe is a telescopic probe, including a fixed section and a telescopic section. The fixed section is a cylindrical structure, and an internal thread is provided on the inner wall of the cylindrical structure. The telescopic section is a columnar structure, and an external thread is provided on the outer wall of the telescopic section. The telescopic section is connected to the fixed section through a thread, and the probe length can be changed by adjusting the number of threads that the telescopic section rotates into the cylindrical structure.

6. A spring coating leakage test mechanism according to claim 5, characterized in that: The return spring is sleeved on the fixed section, the electrode contact is arranged at the lower end of the telescopic section, and the electrode contact is electrically connected to the telescopic section.

7. A spring coating leakage test mechanism according to claim 6, characterized in that: The first conductive wire is electrically connected to the fixed section of the probe.

8. A spring coating leakage test mechanism according to claim 7, characterized in that: The mechanism has several electrode bases with different spring hole depths and diameters. When in use, the corresponding electrode base is selected according to the size of the spring to be tested.

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