An automatic testing device for the pin depth of automobile wiring harness terminals

Abstract

The invention discloses an automatic testing device for the plug-in depth of automobile wiring harness terminals, comprising a box shell; a terminal insertion sleeve, arranged at the front end of the box shell, a plug-in board is arranged at the front end of the terminal insertion sleeve, and a plug-in hole for inserting the automobile wiring harness terminal is arranged in the middle of the plug-in board; a moving frame, arranged inside the box shell, one side of the moving frame slides along the slide rail on the inner wall of the box shell, and the front end of the moving frame extends into the terminal insertion sleeve; an ejector guide column, arranged inside the front end of the moving frame, and four ejector pins that can be axially moved are arranged inside the ejector guide column; a swing block, arranged inside the moving frame and corresponding to the ejector pins one by one, one end of the swing block is connected to the moving frame for rotation, one side of the other end abuts against one end of the ejector pin, and the other side corresponds to a position measuring tool installed on the moving frame. The invention can quickly and accurately measure the plug-in depth of automobile wiring harness terminals, meeting the needs of large-scale production.

Description

Technical Field

[0001] The invention relates to the field of automobile wiring harness terminal production, in particular to an automatic testing device for the pin depth of an automobile wiring harness terminal. Background Art

[0002] As the degree of intelligence of automobiles increases, especially in new energy vehicles, a large number of HSD (high-speed data) harnesses are used. There are multiple pins on the terminals of the HSD harnesses. To ensure that each pin can be plugged in during use, it is necessary to measure the end position of each pin. The current measurement method is to place the harness terminal under a projector for magnification and check and judge by the operator's naked eyes. In fact, the tolerance of the pin position of the terminal is ±0.15mm. It is obviously impossible to meet the accuracy requirements by checking and judging by the naked eye. In many cases, other measuring tools are needed. The use of measuring tools will greatly reduce production efficiency and cannot meet the needs of large-scale production. Therefore, a device that can quickly and accurately measure the depth of the terminal pin is needed to meet the needs of production. Summary of the invention

[0003] The invention provides an automatic testing device for the plug-in pin depth of an automobile wiring harness terminal, which can quickly and accurately measure the plug-in pin depth of the automobile wiring harness terminal and meet the needs of large-scale production.

[0004] To achieve the above purpose, in an embodiment of the present application, the following technical solution is provided: an automatic testing device for the plug-in depth of a wiring harness terminal of an automobile, comprising:

[0005] Box shell;

[0006] The terminal insertion sleeve is arranged at the front end of the box shell, the front end of the terminal insertion sleeve is provided with a plug board, and the middle part of the plug board is provided with a socket for inserting the automobile wiring harness terminal;

[0007] A movable frame is arranged inside the box shell, one side of the movable frame slides along the slide rail on the inner wall of the box shell, and the front end of the movable frame extends into the terminal insertion sleeve;

[0008] An ejector guide column is arranged inside the front end of the movable frame, and four ejector pins that can move axially are arranged inside the ejector guide column. The plug pins of the automobile wiring harness terminal are correspondingly abutted against the four ejector pins and push the ejector pins to move axially;

[0009] The swing block is arranged inside the mobile frame and corresponds to the ejector pins one by one. One end of the swing block is rotatably connected to the mobile frame, one side of the other end abuts against one end of the ejector pin, and the other side corresponds to the position measuring tool installed on the mobile frame.

[0010] Preferably, a terminal positioning socket is installed at the front end of the ejector guide column, and a positioning socket corresponding to the socket is arranged inside the terminal positioning socket.

[0011] Preferably, the front end of the ejector guide column is axially sleeved with a limiting shaft sleeve for clamping the terminal positioning socket to limit the position.

[0012] Preferably, a limiting strip is inserted radially into the middle of the ejector guide column, the limiting strip is inserted into the middle of the ejector and is located in a limiting groove provided on the side wall of the ejector, and the width of the limiting groove is greater than the width of the limiting strip.

[0013] Preferably, guide blocks are provided at both ends of the interior of the ejector guide column, and the ejector passes through corresponding guide holes on the guide blocks.

[0014] Preferably, a position detection rod is installed laterally on the other side of the movable frame, and a position sensor aligned with the position detection rod is installed on one side of the position detection rod.

[0015] Preferably, the front end of the box shell is located at the lower side of the terminal insertion sleeve and is provided with a wiring harness terminal sliding frame extending forward, the wiring harness terminal sliding frame includes a fixed frame and a sliding seat, the upper side of the fixed frame is provided with a guide rail, the sliding seat is installed on the guide rail for sliding, and the upper side of the sliding seat is provided with at least one embedding groove, and the wiring harness terminal is embedded in the embedding groove.

[0016] Preferably, the position measuring tool is a micrometer or a dial gauge, and the measuring head of the micrometer or the dial gauge is against the swing block.

[0017] Preferably, the box shell comprises a front end plate, a rear end plate, a top plate and a bottom plate which are connected in sequence, the terminal insertion sleeve is mounted on the front end plate, and both sides of the box shell are closed by transparent side panels.

[0018] Preferably, a control board is arranged on the rear end panel, the control board is electrically connected to the position measuring tool and the position sensor, and an exposed electrical connection socket is arranged on the control board.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The structure is reasonable and ingenious. When the wiring harness terminal is inserted into the terminal positioning socket, the movable frame can be pushed to move, ensuring that the pin can fully push the ejector pin inside the ejector pin guide column to move. The movement of the ejector pin is converted into the swing of the swing block, which is detected by the position measurement tool, thereby obtaining the specific depth of each pin. The detection is very accurate and fast, and the data can be read as soon as it is inserted into place, which greatly improves the detection efficiency of the wiring harness terminal pin depth and meets the needs of large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a main structural diagram of the present invention;

[0022] Figure 2 It is a top view of the structure of the present invention;

[0023] Figure 3 It is a front cross-sectional structural diagram of the present invention;

[0024] Figure 4 for Figure 3 A magnified structural diagram;

[0025] Figure 5 It is the internal partial structure diagram of the present invention;

[0026] Figure 6 It is a partial structural diagram of the present invention after removing the movable frame;

[0027] Figure 7 It is a schematic diagram of the internal structure of the ejector guide column of the present invention;

[0028] Figure 8 It is a schematic diagram of a half-section structure of the ejector guide column of the present invention;

[0029] Fig. 9 It is a schematic diagram of the wiring harness terminal structure of the present invention. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] The present invention provides the following technical solutions to achieve the above-mentioned purpose and solve the problems of inaccurate detection of the depth of the automotive wiring harness terminal pin and low measurement efficiency in the prior art:

[0032] like Figure 1-8 As shown, a device for automatically testing the pin depth of a wiring harness terminal of an automobile is provided, comprising:

[0033] A box shell 1, wherein a dust-free space is formed inside the box shell 1. Preferably, the box shell 1 comprises a front end plate, a rear end plate, a top plate and a bottom plate connected in sequence, and the terminal insertion sleeve 2 is installed on the front end plate. Both sides of the box shell 1 are closed by transparent side panels, and the working conditions of the components inside the box shell 1 can be observed through the transparent side panels.

[0034] A plurality of shock-absorbing feet are installed on the bottom plate and the rear end plate of the box shell 1, and the shock-absorbing feet can provide shock-absorbing support for the box shell 1, so that the entire test device will not vibrate greatly when working.

[0035] The present embodiment also includes a terminal insertion sleeve 2, which is arranged at the front end of the box shell 1. A plug board 5 is arranged at the front end of the terminal insertion sleeve 2. A socket 51 for inserting the automobile wiring harness terminal is arranged in the middle of the plug board 5. The terminal insertion sleeve 2 is cylindrical, and one end thereof is connected to the front end plate of the box shell 1. The diameter of the socket 51 is slightly larger than the width of the wiring harness terminal, which allows the wiring harness terminal to be quickly inserted and also plays a certain guiding role.

[0036] In this embodiment, a movable frame 6 is also included, which is arranged inside the box shell 1. One side of the movable frame 6 slides along the slide rail 13 on the inner wall of the box shell 1, and the front end of the movable frame 6 extends into the terminal insertion sleeve 2. At the same time, a pin guide column 11 is arranged inside the front end of the movable frame 6. Fig. 9 As shown, four pins are provided at the front end of the wiring harness terminal, so correspondingly, four axially movable ejector pins 12 are provided inside the ejector guide column 11, and the pins of the automobile wiring harness terminal are correspondingly abutted against the four ejector pins 12 and push the ejector pin 12 to move axially. When the automobile wiring harness terminal is inserted into the socket 51, it will axially abut against the ejector guide column 11 and push the movable frame 6 to translate inward. The movement of the movable frame 6 can play a buffering role. Preferably, an elastic member for pushing the movable frame 6 to reset is provided on the slide rail 13. When the automobile wiring harness terminal pushes the movable frame 6 to move, the pins will also push the four ejector pins 12 to move axially.

[0037] In order to measure the axial movement distance of the ejector pin 12, the present embodiment further includes a swing block 7, which is arranged inside the mobile frame 6 and corresponds to the ejector pin 12 one by one. One end of the swing block 7 is rotatably connected to the mobile frame 6, and one side of the other end is against one end of the ejector pin 12, and the other side corresponds to the position measuring tool 4 installed on the mobile frame 6. When the ejector pin 12 moves, it will push the swing block 7 to swing, and the swing distance of the swing block 7 will be detected by the position measuring tool 4, so that the pin depth data of the automotive wiring harness terminal can be obtained. Preferably, the position measuring tool 4 is a micrometer or a dial gauge, and the measuring head of the micrometer or the dial gauge is against the swing block 7.

[0038] like Figure 4 As shown, in this embodiment, a terminal positioning socket 10 is installed at the front end of the ejector guide column 11, and a positioning socket 10 corresponding to the socket 51 is arranged inside the terminal positioning socket 10. The shape of the positioning socket 10 matches the shape of the automobile wiring harness terminal. When the automobile wiring harness terminal is inserted into the terminal positioning socket 10, it can ensure that the pin of the automobile wiring harness terminal and the ejector 12 can correspond axially one by one, thereby improving the efficiency of detection.

[0039] In this embodiment, if Figure 4 As shown, the front end of the ejector guide column 11 is axially sleeved with a limiting shaft sleeve 8 which clamps the terminal positioning socket 10 to limit the position. The limiting shaft sleeve 8 can fix the terminal positioning socket 10. At the same time, a pin hole is opened on the top of the limiting shaft sleeve 8, and a waist hole corresponding to the pin hole is opened on the top of the terminal insertion sleeve 2. The pin can pass through the waist hole and the pin hole and be embedded in the slot on the top of the ejector guide column 11 to achieve anti-rotation of the ejector guide column 11 and the limiting shaft sleeve 8, and can also achieve rapid disassembly of the ejector guide column 11. Since the horizontal moving distance of the pin is determined by the waist hole, the pin can also play a role in limiting the movement of the moving frame 6.

[0040] In this embodiment, if Figure 7-8 As shown, a limiting strip 16 is inserted into the middle of the ejector guide column 11 along the radial direction, and the limiting strip 16 is inserted into the middle of the ejector 12 and is located in a limiting groove provided on the side wall of the ejector 12. The width of the limiting groove is greater than the width of the limiting strip 16. The axial movement of the ejector 12 can be limited by the limiting strip 16, and the width of the limiting groove on the side wall of the ejector 12 can be adjusted according to different automotive wiring harness terminals.

[0041] At the same time, in order to improve the smoothness of the axial movement of the ejector pin 12, guide blocks 9 are provided at both ends of the ejector pin guide column 11, and the ejector pin 12 passes through the corresponding guide holes on the guide blocks 9. The guide blocks 9 are cylindrical and fixedly installed inside the ejector pin guide column 11.

[0042] In order to achieve automatic detection, such as Figure 5 As shown, a position detection rod 15 is laterally installed on the other side of the movable frame 6, and a position sensor 14 aligned with the position detection rod 15 is installed on one side of the position detection rod 15. The detection rod 15 can move with the movable frame 6, and the distance between the detection rod 15 and the front end plate of the box shell 1 can be detected by the position sensor 14. When the position sensor 14 detects the movement of the movable frame 6, it means that the wiring harness terminal has been inserted, and a signal can be sent to notify the position measurement tool 4 to perform measurement.

[0043] In this embodiment, if Figure 1-2 As shown, the front end of the box shell 1 is located at the lower side of the terminal insertion sleeve 2 and is provided with a wire harness terminal sliding frame 3 extending forward. The wire harness terminal sliding frame 3 includes a fixed frame 31 and a sliding seat 33. The upper side of the fixed frame 31 is provided with a guide rail 32, and the sliding seat 33 is installed on the guide rail 32 for sliding. The upper side of the sliding seat 33 is provided with at least one embedding groove 34, and the wire harness terminal is embedded in the embedding groove 34. The embedding groove 34 can quickly position the wire harness. When the wire harness is inserted into the terminal insertion sleeve 2, it can move together with the sliding seat 33 to improve the accuracy and speed of insertion. A clamp that can clamp the wire harness can also be installed on the upper side of the sliding seat 33. After the wire harness is clamped, the sliding seat 33 is moved to realize the insertion detection of the wire harness.

[0044] In this embodiment, a control panel is provided on the rear end panel, and the control panel is electrically connected to the position measuring tool 4 and the position sensor 14. An exposed electrical connection socket 17 is provided on the control panel. Such a configuration can improve the integration of the device, and the wiring is inside the box shell 1, which is more concise and convenient to carry. Just like a computer main chassis, it can be moved to the place where it is needed and the signal power cord can be directly plugged into the electrical connection socket 17 for use. The detected data can be displayed on the connected display. When the data of the four position measuring tools 4 are within the specified range, the controller will automatically judge as qualified, otherwise it is unqualified.

[0045] The testing device in this embodiment has a reasonable and ingenious structure. When the wiring harness terminal is inserted into the terminal positioning socket, the movable frame can be pushed to move, ensuring that the pin can fully push the ejector pin inside the ejector pin guide column to move. The movement of the ejector pin is converted into the swing of the swing block, which is detected by the position measurement tool, thereby obtaining the specific depth of each pin. The detection is very accurate and fast, and the data can be read as soon as the pin is inserted into place, which greatly improves the detection efficiency of the wiring harness terminal pin depth and meets the needs of large-scale production.

[0046] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. An automatic testing device for the pin depth of automobile wiring harness terminals, characterized in that: include: Box shell (1); A terminal insertion sleeve (2) is arranged at the front end of the box shell (1); a plug board (5) is arranged at the front end of the terminal insertion sleeve (2); a plug hole (51) for inserting a car wiring harness terminal is arranged in the middle of the plug board (5); A movable frame (6) is arranged inside the box shell (1), one side of the movable frame (6) slides along a slide rail (13) on the inner wall of the box shell (1), and the front end of the movable frame (6) extends into the terminal insertion sleeve (2), and an elastic member for pushing the movable frame (6) to reset is arranged on the slide rail (13); An ejector guide column (11) is arranged inside the front end of the movable frame (6), and four ejector pins (12) that can move axially are arranged inside the ejector guide column (11). The plug pins of the automobile wiring harness terminal are correspondingly abutted against the four ejector pins (12) and push the ejector pins (12) to move axially. A swing block (7) is arranged inside the mobile frame (6) and corresponds to the ejector pin (12) one by one. One end of the swing block (7) is rotatably connected to the mobile frame (6), one side of the other end abuts against one end of the ejector pin (12), and the other side corresponds to the position measuring tool (4) installed on the mobile frame (6); A terminal positioning socket (10) is installed at the front end of the ejector guide column (11), a positioning socket (10) is provided inside the terminal positioning socket (10) with a positioning socket hole corresponding to the socket (51), and a limiting shaft sleeve (8) is axially sleeved at the front end of the ejector guide column (11) for clamping the terminal positioning socket (10) to limit the position.

2. The automatic testing device for the plug-in depth of automobile wiring harness terminals according to claim 1 is characterized in that: A limiting insert strip (16) is inserted into the middle of the ejector pin guide column (11) along the radial direction. The limiting insert strip (16) is inserted into the middle of the ejector pin (12) and is located in a limiting groove provided on the side wall of the ejector pin (12). The width of the limiting groove is greater than the width of the limiting insert strip (16).

3. The automatic testing device for the plug-in depth of automobile wiring harness terminals according to claim 1 is characterized in that: Guide blocks (9) are arranged at both ends of the interior of the ejector guide column (11), and the ejector (12) passes through corresponding guide holes on the guide blocks (9).

4. The automatic testing device for the plug-in depth of automobile wiring harness terminals according to claim 1 is characterized in that: A position detection rod (15) is laterally mounted on the other side of the movable frame (6), and a position sensor (14) aligned with the position detection rod (15) is mounted on one side of the position detection rod (15).

5. The automatic testing device for the plug-in depth of automobile wiring harness terminals according to claim 1 is characterized in that: The front end of the box shell (1) is located below the terminal insertion sleeve (2) and is provided with a wiring harness terminal sliding frame (3) extending forward, the wiring harness terminal sliding frame (3) comprises a fixed frame (31) and a sliding seat (33), a guide rail (32) is provided on the upper side of the fixed frame (31), the sliding seat (33) is installed on the guide rail (32) for sliding, and at least one embedding groove (34) is provided on the upper side of the sliding seat (33), and the wiring harness terminal is embedded in the embedding groove (34).

6. The automatic testing device for the plug-in depth of automobile wiring harness terminals according to claim 1 is characterized in that: The position measuring tool (4) is a micrometer or a dial gauge, and the measuring head of the micrometer or the dial gauge abuts against the swing block (7).

7. The automatic testing device for the plug-in depth of automobile wiring harness terminals according to claim 4 is characterized in that: The box shell (1) comprises a front end plate, a rear end plate, a top plate and a bottom plate which are connected in sequence, the terminal insertion sleeve (2) is mounted on the front end plate, and both sides of the box shell (1) are closed by transparent side plates.

8. The automatic testing device for the plug-in depth of automobile wiring harness terminals according to claim 7 is characterized in that: A control panel is arranged on the rear end panel, the control panel is electrically connected to the position measuring tool (4) and the position sensor (14), and an exposed electrical connection socket (17) is arranged on the control panel.

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