Test device for testing retention force of tubular terminal

Abstract

The utility model belongs to the field of tubular terminal holding force testing, and particularly provides a testing device suitable for testing the holding force of a tubular terminal, which comprises a terminal strip fixing device, a pressing clamp and a displacement rail, the pressing clamp can randomly change the tightening distance according to the size of a wire diameter, and a cable sample piece for pressing a tubular terminal is inserted into a wiring terminal strip; a cable is clamped in the middle of the pressing clamp, after the cable is pressed, a hexagonal fastening tool is used for tightening a fastening bolt of the clamp, and after it is guaranteed that the clamp is not loosened and is firmly installed, a stretching system is started, a wire is stretched in the direction perpendicular to a line bank, a terminal does not fall off from the wire and the line bank, and the pressing connection state does not change. The device is used for the self-inspection test operation of the small-wire-diameter tubular terminal crimping tool and the retention test of the tubular terminal, and can improve the accuracy of the retention test and the working efficiency.

Description

Technical Field

[0001] The utility model belongs to the field of tubular terminal retention force testing, and in particular relates to a testing device for detecting the retention force of tubular terminals. Background Art

[0002] Holding force testing is an important means of evaluating the crimping performance of tubular terminals. Current testing methods primarily use a spring dynamometer, tailored to the specific terminal and terminal block model. The operator loops the cable tail of the crimped sample to facilitate hooking the sample with a tension hook, then manually pulls the terminal block until the spring dynamometer displays the force required for the conductor area. The holding force test is then performed. This test method requires manual intervention, which cannot guarantee force stability or achieve uniform force changes. The force indicated by the spring dynamometer's needle dial fluctuates within a small range, making it difficult to ensure accurate measurement results.

[0003] Patent CN202021800343.3 discloses a tool for tensile testing of crimped wires of tubular terminals. However, the tool only involves the fixation of the wires and does not form a complete set of test equipment for detecting the retention force of tubular terminals.

[0004] Patent 202011053550.1 discloses a method and mold for tensile testing of tubular terminals, including a ring-shaped hanger, the ring-shaped hanger including a wire outlet opening, a semi-ring tensile testing mold that slides along the inner ring of the ring-shaped hanger, and the semi-ring tensile testing mold including at least one clamping hole that matches the conductor wire diameter of the tensile test wire. The tensile test wire passes the stripped metal wire portion through the wire outlet opening, and then clamps the conductor wire with the insulation protection zone removed by the clamping hole. The terminal insulation and the crimped terminal extend into the inner radius of the semi-ring tensile testing mold. Finally, the tester is clamped on the insulated wire harness and a downward pressure test is performed to complete the pull-out force test of the tubular terminal. However, this device tests the pull-out force of the tubular terminal, and the test process is destructive to the test sample, which cannot ensure the integrity of the sample and cannot test the retention force of the tubular terminal. Utility Model Content

[0005] In order to solve the technical problems existing in the prior art, the present invention provides a test device suitable for detecting the holding force of tubular terminals, which can improve the accuracy and work efficiency of the holding force test.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A test device suitable for detecting the retention force of tubular terminals, comprising a terminal block fixing device, a clamping fixture and a displacement rail; the terminal block fixing device, the clamping fixture and the displacement rail; the terminal block fixing device is used to install the terminal block; the clamping fixture includes two clamps, which are fixed on a fixing seat, with a certain gap between the two clamps, the gap being used for cables to pass through, the two clamps being used to clamp the cables, and a displacement rail is also fixed above the gap formed by the clamping fixture, the axis of the displacement rail being parallel to the center line of the gap; the fixing seat is connected to a stretching system.

[0008] As a further technical solution, each clamping fixture is a cylindrical roller, both cylindrical rollers are eccentrically arranged with respect to the fixed seat, and a clamping handle is arranged on the side of one of the cylindrical rollers.

[0009] As a further technical solution, the cylindrical roller is fixed to the fixing seat via a positioning fixing piece.

[0010] As a further technical solution, each clamping fixture is a cylindrical roller, the two cylindrical rollers are eccentrically arranged with respect to the fixed seat, and clamping handles are arranged on the sides of the two cylindrical rollers.

[0011] As a further technical solution, the cylindrical roller is fixed to the fixing seat via a positioning fixing piece.

[0012] As a further technical solution, each clamping fixture is a cylindrical roller, wherein the cylindrical roller is eccentrically arranged with respect to the fixed seat, and the center of another cylindrical roller is connected with the fixed seat, and a clamping handle is arranged on the side of the eccentrically arranged cylindrical roller.

[0013] As a further technical solution, the cylindrical roller is fixed to the fixing seat by a positioning fixing member.

[0014] As a further technical solution, a through hole is provided at the center of the displacement rail, and the cable passes through the through hole.

[0015] As a further technical solution, the guide rail is plugged into the terminal block.

[0016] As a further technical solution, the stretching system stretches the fixing seat along a direction perpendicular to the wiring row.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model provides a test device for detecting the holding force of tubular terminals. According to the particularity of the holding force test method, a terminal block fixing device of the same height for fixing the terminal block is added in front of the clamping clamp, a terminal block matching the test sample is installed on the terminal block fixing device, the terminal part of the crimped sample is inserted into the terminal block, and then the cable is clamped by the clamping clamp, and a stretching system is installed between the clamping clamp and the bottom of the terminal block. The tension value and holding time of the terminal block are controlled by the stretching system, and the crimped sample is stretched at a uniform speed, which can ensure that there is no interference from variables such as human factors during the test process, and ensure the accuracy and rationality of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a tubular terminal retention force test device proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of a crimping sample proposed by the present invention;

[0021] Figure: 1. Terminal block; 2. Guide rail; 3. Guide rail mounting bracket; 4. Tubular terminal; 5. Cable; 6. Positioning bolt; 7. Clamping fixture; 8. Clamping handle; 9. Displacement rail; 10. Fixing base; DETAILED DESCRIPTION

[0022] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprising" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations;

[0024] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0025] As introduced in the background technology, there are deficiencies in the existing technology. In order to solve the above technical problems, the utility model proposes a test device for detecting the holding force of tubular terminals; the device is mainly used to test the holding force of tubular terminals. The terminal block is installed on the profile rail. After the terminal is inserted into the terminal block, a uniform speed digital tensile gauge is used to stretch the sample to the test requirement value to ensure the integrity of the sample. After the test, the sample can be disassembled for the next step of inspection and analysis.

[0026] In a typical embodiment of the present invention, Figure 1 As shown, the utility model provides a test device for detecting the retention force of tubular terminals, which mainly includes a terminal block 1, a terminal block fixing device, a clamping fixture 7, and a displacement rail 9; wherein the test piece is as follows Figure 2 As shown, it mainly includes a tubular terminal 4 and a cable 5. The tubular terminal 4 is fixed to the end of the cable 5. The test device of this embodiment is mainly used to detect the holding force of the tubular terminal 4 and the cable 5. Specifically, the terminal block 1 fixing device is used to install the terminal block 1; the clamping clamp 7 includes two clamping clamps 7, with a certain gap between the two clamping clamps 7 for the cable to pass through. The two clamping clamps 7 are used to clamp the cable 5, and a displacement rail 9 is fixed above the gap formed by the clamping clamp 7. The axis of the displacement rail 9 is parallel to the center line of the gap; the clamping clamp 7 and the displacement rail 9 are fixed on a fixing seat 10, and the fixing seat 10 is connected to a stretching system (not shown in the figure). Among them, the stretching system can use a uniform digital tensile gauge, which stretches the sample to the test requirement value to ensure the integrity of the sample. After the test, the sample can be disassembled for the next step of inspection and analysis.

[0027] Specifically, the terminal block fixing device in this embodiment is fixed and stationary, and mainly includes a guide rail 2 and a guide rail fixing frame 3; the guide rail fixing frame 3 is fixed horizontally, the guide rail 2 is installed on the guide rail fixing frame 3, and the terminal block 1 is installed on the guide rail 2; the terminal block 1 is used to install the tubular terminal 4 to fix the tubular terminal 4; the clamping clamps 7 include two, and there is a certain gap between the two clamping clamps 7. After the cable 5 passes through the gap, it is clamped by the two clamping clamps 7, and the clamping clamps 7 are fixed on a fixed seat, and a displacement rail 9 is also provided on the fixed seat, and the displacement rail 9 is fixed and stationary; the displacement rail 9 is provided above the gap position formed by the two clamping clamps 7, and the axis of the displacement rail 9 is parallel to the center line of the gap; the cable 5 passes through the displacement rail 9, and the terminal at the end of the cable 5 is inserted into the terminal block 1; the clamping clamp and the displacement rail are fixed on the fixed seat, and the fixed seat is connected to the stretching system. When the holding force between the tubular terminal 4 and the cable 5 is detected, the stretching system is started, and the stretching system pulls the fixing seat, thereby stretching the cable 5, so that a certain pulling force is generated between the tubular terminal 4 and the cable 5, thereby detecting the holding force.

[0028] like Figure 1 As shown, each clamping clamp 7 in this embodiment is a cylindrical roller, which is eccentrically connected to the fixed seat 10. A clamping handle 8 is installed on one of the cylindrical rollers. The gap between the two clamping clamps 7 can be adjusted by rotating the clamping handle 8; when the cylindrical roller rotates to the appropriate position, its position is positioned by the positioning bolt 6.

[0029] Furthermore, a through hole is provided at the center of the displacement rail 9 , and the cable 5 passes through the through hole, so that the tubular terminal 4 can be fixed on the terminal block 1 .

[0030] Furthermore, the guide rail 2 is plugged into the terminal block 1 , and after being plugged in, it is fixed by a connector, thereby achieving the fixation of the terminal block 1 .

[0031] Furthermore, the stretching system stretches the fixed seat perpendicular to the direction of the terminal block. The stretching system can control the moving speed and moving distance of the fixed seat, and then control the magnitude and holding time of the tension value between the tubular terminal 4 and the cable 5 on the terminal block. The stretching system stretches the crimped sample at a uniform speed, which can ensure that there is no interference from variables such as human factors during the test process, thereby ensuring the accuracy and rationality of the test results.

[0032] The specific test method is as follows:

[0033] Match the terminal block 1 to the test sample required, install the terminal block 1 on the guide rail 2 with bolts and other fixings, and crimp the tubular terminal 4 on a cable 5 with a matching wire diameter of 200 mm in length. Figure 1 As shown, the tubular terminal 4 is inserted into the terminal block 1. After the tail cable 5 is initially fixed by two clamping clamps 7, the clamping handle 8 of the clamping clamp 7 is pushed counterclockwise until the two clamping clamps 7 clamp the cable 5. At this time, the positioning bolt 6 is tightened to fix the position of the clamping clamp 7.

[0034] The stretching system is operated to stretch the fixing seat along the displacement rail 9 at a set speed. For example, the stretching system can be made to stretch the cable uniformly along the displacement rail 9 at a speed of 20-25 mm / min. When the force reaches the set value, the stretching system stops moving and maintains for a certain period of time, and then the stretching system is released to unload the force. At this time, check whether the cable 5 is detached from the tubular terminal 4. If the cable 5 is not detached from the tubular terminal 4 and the tubular terminal 4 is not detached from the terminal block 1, then withdraw the crimped sample from the terminal block 1 and monitor the status of the sample. If the crimping status of the sample is good and has not changed, it is determined that the holding force test of the tubular terminal is qualified.

[0035] Through the above device and method, it can be seen that the device is easy to operate, ensures the accuracy of the test results, and saves labor costs.

[0036] Example 2

[0037] Furthermore, in this embodiment, the two clamping clamps 7 in Example 1 are designed to be equipped with clamping handles 8. At this time, the gap between the two clamping clamps 7 can be adjusted together by rotating the two clamping handles 8; when the two clamping clamps 7 (cylindrical rollers) are rotated to the appropriate position, they are each fixedly connected to the fixing seat 10 by a positioning bolt 6.

[0038] The rest of the structure and test process are the same as those in Example 1 and will not be described in detail here.

[0039] Example 3

[0040] Furthermore, this embodiment provides another clamping clamp, that is, the two clamping clamps 7 in Example 1 can also be designed to have an eccentric connection between one clamping clamp 7 and the fixed seat, and a non-eccentric connection between the other clamping clamp 7 and the fixed seat 10, and can be fixedly connected or rotatably connected to the fixed seat 10. In this case, it is only necessary to set a clamping handle 8 on the eccentrically set clamping clamp 7, and the size of the gap between the two clamping clamps can be adjusted by rotating the eccentrically set clamping handle 8.

[0041] The rest of the structure and test process are the same as those in Example 1 and will not be described in detail here.

[0042] Finally, it should be noted that relational terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A test device for detecting the retention force of tubular terminals, characterized in that: It includes a terminal block fixing device, a clamping clamp and a displacement rail; the terminal block fixing device is used to install the terminal block; the clamping clamp includes two, the two clamping clamps are fixed on the fixing seat, there is a certain gap between the two clamping clamps, the gap is for the cable to pass through, the two clamping clamps are used to clamp the cables, and a displacement rail is also fixed above the gap position formed by the clamping clamp, the axis of the displacement rail is parallel to the center line of the gap; the fixing seat is connected to the stretching system.

2. The test device for detecting the retention force of tubular terminals according to claim 1, characterized in that: Each clamping fixture is a cylindrical roller. Both cylindrical rollers are eccentrically arranged with respect to the fixed seat. A clamping handle is arranged on the side of one of the cylindrical rollers.

3. The test device for detecting the retention force of tubular terminals according to claim 2, characterized in that: The cylindrical roller is fixed to the fixing seat via a positioning fixing piece.

4. The test device for detecting the retention force of tubular terminals according to claim 1, characterized in that: Each clamping fixture is a cylindrical roller. The two cylindrical rollers are eccentrically arranged with respect to the fixing seat, and clamping handles are arranged on the sides of the two cylindrical rollers.

5. The test device for detecting the retention force of tubular terminals according to claim 4, characterized in that: The cylindrical roller is fixed to the fixing seat via a positioning fixing piece.

6. The test device for detecting the retention force of tubular terminals according to claim 1, characterized in that: Each clamping fixture is a cylindrical roller, wherein the cylindrical roller is eccentrically arranged with respect to the fixing seat, and the center of another cylindrical roller is connected with the fixing seat, and a clamping handle is arranged on the side of the eccentrically arranged cylindrical roller.

7. The test device for detecting the retention force of tubular terminals according to claim 6, characterized in that: The cylindrical roller is fixed to the fixing seat via a positioning fixing piece.

8. The test device for detecting the retention force of tubular terminals according to any one of claims 1 to 7, characterized in that: A through hole is provided at the center of the displacement rail, and the cable passes through the through hole.

9. The test device for detecting the retention force of tubular terminals according to any one of claims 1 to 7, characterized in that: The terminal block fixing device is plugged together with the terminal block.

10. The test device for detecting the retention force of tubular terminals according to any one of claims 1 to 7, characterized in that: The stretching system stretches the fixing seat along a direction perpendicular to the wiring row.

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