Probe elasticity tester

Abstract

The probe elasticity tester comprises a base plate, a supporting plate, a supporting tube, a tension meter and a needle tube, the supporting plate is arranged at the front end of the top of the base plate and is perpendicular to the base plate, the rear end of the supporting tube penetrates through the supporting plate to be fixed, the needle tube is arranged at the front end of the supporting tube, and the center line of the needle tube coincides with the center line of the supporting tube. An ejector rod is arranged in the supporting tube, and the front end of the ejector rod extends into the needle tube; the tension meter is arranged at the rear end of the top of the bottom plate, and a screw of the tension meter forwards extends into the supporting pipe and makes contact with the rear end of the ejector rod. The probe elastic force tester is used for detecting the elastic force value of the probe in the test module, the compression amount of the probe is limited by the height difference between the ejector rod and the front end of the needle tube, when the ejector rod is pressed into the bottom of the profiling cavity of the test module, the ejector rod compresses the probe to a certain amount, and the elastic force value corresponding to the probe under the compression amount can be read through the tension meter. And comparing the value with a standard value to judge whether the probe meets the use requirement or not.

Description

Technical Field

[0001] The utility model relates to the technical field of wire harness production, in particular to a probe elastic force tester. Background Art

[0002] Automobile wire harnesses are basically in the same form, all composed of wires, wrapping tapes and connectors. During the wire harness production process, it is necessary to test it using tooling according to relevant standards. Among them, as one of the wire harness test toolings, the test module has a profiling cavity adapted to the connector. A number of probes corresponding to the internal terminals of the connector are arranged in the profiling cavity. The top of the probe is at a certain distance from the bottom surface of the profiling cavity to ensure that the probe can extend into the connector. When in use, the connector is placed into the profiling cavity, the probe extends into the connector and contacts the terminal, and is pressed by the terminal for a certain distance to ensure the stability of the electrical connection for relevant tests.

[0003] Although the quality and firmness of the probes have been detected during the production process of the test module, during the use of the test module, due to the relatively frequent pressing of the probes, the probes may be deformed and stuck after being used for a period of time, resulting in excessive elastic force and thus damaging the terminals. There may also be a situation where the probes are deformed and the elastic force value is insufficient, thus affecting the terminal detection result. This requires regular detection of the probes of the test module to ensure that they meet the usage requirements. Summary of the Invention

[0004] The utility model provides a probe elastic force tester for measuring the elastic force value of the probes in the test module to ensure that they meet the usage requirements.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A probe elastic force tester includes a bottom plate, a support plate, a support tube, a tensiometer and a needle tube. The support plate is arranged at the front end of the top of the bottom plate and is perpendicular to the bottom plate. The rear end of the support tube passes through the support plate for fixation. The needle tube is arranged at the front end of the support tube, and its center line coincides with the center line of the support tube. A push rod is arranged in the support tube, and the front end of the push rod extends into the needle tube. The tensiometer is arranged at the rear end of the top of the bottom plate, and the screw rod of the tensiometer extends forward into the support tube and contacts the rear end of the push rod.

[0007] Preferably, it further includes an adjusting nut. The rear end of the needle tube is inserted into the front end of the support tube and can be adjusted back and forth. The adjusting nut is threadedly connected to the front end of the support tube, so that the front end of the support tube contracts or expands to clamp or loosen the needle tube.

[0008] Preferably, a connecting sleeve is provided at the front end of the support tube. Two symmetrical through opening grooves are formed in the connecting sleeve along its length direction, and the two through opening grooves extend backward to the support tube behind the connecting sleeve. External threads are formed on the connecting sleeve, and an adjusting nut is threadedly sleeved on the connecting sleeve to fix the syringe needle tube.

[0009] Preferably, a scale bar is provided on the outer side of the syringe needle tube.

[0010] Preferably, a limiting step is formed at the rear end of the ejector rod, and the outer diameter of the limiting step is larger than the outer diameter of the ejector rod; the support tube is composed of an installation tube, a connecting tube and a long tube arranged in sequence from back to front. The inner diameters of the installation tube and the connecting tube are the same and larger than the inner diameter of the long tube. The limiting step of the ejector rod is located inside the connecting tube, and its rear end is in contact with the front end of the screw rod.

[0011] Preferably, external threads are formed on the installation tube of the support tube, and threaded through holes are formed on the support plate. The support tube is detachably fixed on the support plate.

[0012] Preferably, the pull force gauge is a digital display push-pull force gauge.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: This probe elastic force tester is used to detect the elastic force value of the probe in the test module. The compression amount of the probe is limited by the height difference between the ejector rod and the front end of the syringe needle tube. When the ejector rod is pressed into the bottom of the profiling cavity of the test module, the ejector rod has compressed the probe by a certain amount. The elastic force value corresponding to the probe under this compression amount can be read through the pull force gauge, and by comparing it with the standard value, it can be determined whether the probe meets the usage requirements; further, the rear end of the syringe needle tube is inserted into the support tube and can be adjusted back and forth. By adjusting the syringe needle tube, the height difference between the ejector rod and the front port of the syringe needle tube can be adjusted, so as to realize the detection of the elastic force value of the probe with different arrangement heights and / or different compression amounts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model.

[0015] Figure 2 is an exploded view of the present utility model.

[0016] Figure 3 is a schematic diagram of the cooperation among the support tube, the ejector rod and the syringe needle tube.

[0017] Figure 4 is Figure 3 a schematic structural diagram with the support tube removed.

[0018] In the figure: 1. Bottom plate; 2. Support plate; 3. Support tube; 4. Tensiometer; 5. Syringe; 6. Thumb rod; 7. Adjusting nut; 8. Connecting sleeve; 9. Through opening groove; 10. Limiting step; 11. Threaded through hole; 12. Scale bar; 31. Installation tube; 32. Connecting tube; 33. Long tube; 41. Screw rod. Detailed implementation mode

[0019] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described below in conjunction with the detailed implementation mode. Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and cannot be understood as a limitation of this patent; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0020] The present utility model discloses a probe elastic force tester, which includes a bottom plate 1, a support plate 2, a support tube 3, a tensiometer 4 and a syringe 5. The support plate 2 is arranged at the front end of the top of the bottom plate 1 and is perpendicular to the bottom plate 1. The rear end of the support tube 3 passes through the support plate 2 for fixation. The syringe 5 is arranged at the front end of the support tube 3, and its center line coincides with the center line of the support tube. A thumb rod 6 is arranged inside the support tube 3, and the front end of the thumb rod 6 extends into the inside of the syringe 5. The tensiometer 4 is arranged at the rear end of the top of the bottom plate 1, and the screw rod 41 of the tensiometer 4 extends forward into the inside of the support tube 3 and contacts the thumb rod 6. Among them, the distance between the thumb rod in the syringe and the front port of the syringe is equal to the value obtained by subtracting the compression distance from the extension length of the probe.

[0021] Since the probe is arranged in the profiling cavity of the test module, there is a certain distance between the top of the probe and the bottom surface of the profiling cavity, or in other words, the probe has a certain height. This tester uses the height difference between the thumb rod and the front end of the syringe to limit the compression amount of the probe, and then measures the elastic force value of the probe under this compression amount and compares whether it meets the requirements. Specifically, assume that the extension height of the probe in the profiling module is 10 mm, and the compression height of the probe is designed to be 2 mm. At this time, the distance between the thumb rod in the syringe and the front port of the syringe should be 8 mm. When using this tester to measure the probe, the syringe extends into the profiling cavity, slews the probe and continues to press it down to the bottom surface of the profiling cavity. At this time, the thumb rod compresses the probe by 2 mm, and the elastic force value corresponding to the probe compressed by 2 mm can be read through the tensiometer, and it can be compared with the standard value to determine whether the probe meets the usage requirements. When the probe is deformed and jammed, the syringe may not be able to be pressed into the bottom of the profiling cavity, or although the syringe is pressed into the bottom of the profiling cavity, the detected elastic force value of the probe is much higher than the standard value at this time. At this time, it can be judged that the probe does not meet the usage requirements and needs to be replaced. When the probe is deformed resulting in a decrease in its elastic force value, under the same conditions, the measured elastic force value will be less than the standard value. At this time, it can be judged that the probe does not meet the usage requirements and needs to be replaced.

[0022] Meanwhile, the syringe barrel and the ejector rod can be made in different sizes according to the thickness of the probe. When measuring probes with different outer diameters, the corresponding-sized syringe barrel and ejector rod can be replaced.

[0023] In the above solution, it can be understood that the syringe barrel is fixed at the front end of the support tube and relatively immobile, that is, the distance between the ejector rod inside the syringe barrel and the front port of the syringe barrel is constant. This design enables the same syringe barrel to only test probes with the same arranged height and the same compression amount in the test module. When testing probes with different arranged heights and / or different compression amounts, another syringe barrel needs to be replaced. To adapt to the elastic force tests of a variety of probes with different arranged heights and / or different compression amounts, the present utility model further includes an adjusting nut 7. The rear end of the syringe barrel 5 is inserted into the front end of the support tube 3 and can be adjusted back and forth. The adjusting nut 7 is threadedly connected to the front end of the support tube 3, so that the front end of the support tube contracts or expands to clamp or loosen the syringe barrel.

[0024] In this embodiment, the adjusting nut controls the contraction or expansion of the front end of the support tube in the following way. The front end of the support tube 3 is provided with a connecting sleeve 8. The outer diameter of the connecting sleeve 8 is greater than the outer diameter of the support tube connected thereto, and its inner diameter is the same. Two symmetrically arranged through opening grooves 9 are formed along the length direction of the connecting sleeve 8, and the two through opening grooves 9 extend backward to the support tube behind the connecting sleeve. The connecting sleeve 8 has an external thread, and the adjusting nut 7 is threadedly sleeved on the connecting sleeve to fix the syringe barrel. Under the action of the two through opening grooves, the inner diameter of the connecting sleeve can become smaller. At this time, the adjusting nut can be sleeved in to fix the syringe barrel. When the adjusting nut is screwed out by 2 / 3, under the action of the two through opening grooves, the connecting sleeve gradually expands, and the syringe barrel can move back and forth.

[0025] Furthermore, a scale bar 12 is arranged on the outer side of the syringe barrel, and the scale bar is formed by laser processing. Blank areas are reserved on the syringe barrel on the front and rear sides of the scale bar. The blank area on the rear side is the clamping area, and the blank area on the front side is the set minimum height difference between the ejector rod and the front end of the syringe barrel.

[0026] In addition, a limiting step 10 is formed at the rear end of the ejector rod 6, and the outer diameter of the limiting step 10 is greater than the outer diameter of the ejector rod 6. The support tube 3 is composed of an installation tube 31, a connecting tube 32, and a long tube 33 arranged in sequence from back to front. The inner diameters of the installation tube 31 and the connecting tube 32 are the same and greater than the inner diameter of the long tube 33. The limiting step 10 of the ejector rod is located inside the connecting tube 32, and its rear end is in contact with the front end of the screw rod 41. The ejector rod is in contact connection with the screw rod, which neither affects the use nor can avoid the screw rod of the tensiometer from being subjected to torque force, wearing the inner wall of the support rod or the syringe barrel, and also facilitates installation and quick replacement. The composition of the support tube is mainly to facilitate the insertion of the ejector rod and limit the ejector rod.

[0027] In addition, an external thread is provided on the mounting pipe 31 of the support pipe 3, and a threaded through hole 11 is provided on the support plate 2. The support pipe 3 is detachably fixed to the support plate 2. Correspondingly, the outer diameter of the connecting pipe should be larger than the outer diameter of the mounting pipe to facilitate the positioning of the mounting pipe.

[0028] Meanwhile, the tensiometer is a digital display push-pull tensiometer, which can more intuitively give the elastic force value.

[0029] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes, combinations and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A probe elasticity tester, characterized in that: It includes a bottom plate, a support plate, a support tube, a tensiometer and a syringe needle. The support plate is arranged at the front end of the top of the bottom plate and is perpendicular to the bottom plate. The rear end of the support tube passes through the support plate for fixation. The syringe needle is arranged at the front end of the support tube, and its central axis coincides with the central axis of the support tube. A push rod is arranged inside the support tube, and the front end of the push rod extends into the syringe needle. The tensiometer is arranged at the rear end of the top of the bottom plate, and the screw rod of the tensiometer extends forward into the support tube and contacts the rear end of the push rod.

2. The probe elastic force tester according to claim 1, wherein: It further includes an adjusting nut. The rear end of the syringe needle is inserted into the front end of the support tube and can be adjusted back and forth. The adjusting nut is threadedly connected to the front end of the support tube, so that the front end of the support tube contracts or expands to clamp or loosen the syringe needle.

3. The probe elasticity tester according to claim 2, wherein: A connecting sleeve is arranged at the front end of the support tube. Two symmetrical through opening grooves are formed along the length direction of the connecting sleeve, and the two through opening grooves extend backward to the support tube behind the connecting sleeve. External threads are formed on the connecting sleeve, and the adjusting nut is threadedly sleeved on the connecting sleeve to fix the syringe needle.

4. The probe elastic force tester according to any one of claims 1-2, characterized in that: A scale bar is arranged on the outer side of the syringe needle.

5. The probe elasticity tester according to claim 1, characterized in that: A limiting step is formed at the rear end of the push rod, and the outer diameter of the limiting step is larger than the outer diameter of the push rod. The support tube is composed of an installation tube, a connecting tube and a long tube arranged in sequence from back to front. The inner diameters of the installation tube and the connecting tube are the same and larger than the inner diameter of the long tube. The limiting step of the push rod is located inside the connecting tube, and its rear end contacts the front end of the screw rod.

6. The probe elasticity tester according to claim 5, characterized in that: External threads are formed on the installation tube of the support tube, and threaded through holes are formed on the support plate. The support tube is detachably fixed on the support plate.

7. The probe elasticity tester according to claim 1, characterized in that: The tensiometer is a digital display push-pull tensiometer.

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