Pin pressing jig for plug of engine wire harness connector

Abstract

The utility model discloses an engine wire harness connector plug pressing jig, which comprises an ejector pin fixing block and an ejector pin fixed on the ejector pin fixing block, and the ejector pin fixing block is fixedly connected with an air cylinder. The ejector pin fixing block is provided with a positioning hole matched with the guide rod in size; one end of the guide rod is fixed on the positioning pin fixing seat, and the positioning pin fixing seat is provided with a positioning hole into which the positioning pin is inserted; the positioning pin fixing seat is provided with a probe sleeve and a probe sleeve fixing block, and the probe sleeve is placed in the probe sleeve fixing block; the air cylinder and the positioning pin fixing seat are fixed on the base; the base is further provided with a pressure reducing valve and a reversing valve. According to the utility model, the production yield is effectively improved, and the risk that the probe falls from the pin sleeve of the wire harness connector plug is reduced.

Description

Technical Field

[0001] The utility model relates to the field of engine cold testing, and particularly relates to an engine wire harness connector plug needle pressing fixture for reducing the dropping of the plug probe of the wire harness connector from the needle sleeve. Background Art

[0002] The engine is considered the core of an internal combustion engine vehicle, and its performance and quality directly affect the performance and reliability of the entire vehicle. After assembly, in order to ensure the performance and quality of the engine during actual use, engine cold testing has become a relatively crucial link. As an important part of engine cold test signal acquisition, the contact connection between the engine wire harness connector plug and the engine wire harness connector is extremely important. After the probe inside the connector plug contacts the pin of the connector, the cold test system can start collecting relevant signals.

[0003] The connector plug is a process part in the engine cold test station and needs to be reused, with requirements for the number of times of use. During actual production and use, the most frequent problem is that the probe drops from the needle sleeve of the connector plug, resulting in abnormal signal acquisition and a decrease in the yield. This problem affects the efficiency of engine cold testing. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is to provide an engine wire harness connector plug needle pressing fixture that can improve the production yield and reduce the risk of the probe dropping from the needle sleeve of the wire harness connector plug.

[0005] The technical solution of the utility model is an engine wire harness connector plug needle pressing fixture, which includes a thimble fixing block and a thimble fixed on the thimble fixing block. The thimble fixing block is fixedly connected to a cylinder; the thimble fixing block is provided with a positioning hole matching the size of the guide rod; one end of the guide rod is fixed on a positioning pin fixing seat, and the positioning pin fixing seat is provided with a positioning hole for inserting a positioning pin; the positioning pin fixing seat is provided with a needle sleeve fixing block, and a plurality of small holes are penetrated through the needle sleeve fixing block, and probe needle sleeves are arranged in the small holes.

[0006] The cylinder and the positioning pin fixing seat are fixed on a base; a pressure reducing valve and a reversing valve are also arranged on the base.

[0007] In an engine wire harness connector plug needle pressing fixture of the utility model, the thimble is fixed on the thimble fixing block by threaded connection.

[0008] In an engine wire harness connector plug needle pressing fixture of the utility model, the thimble fixing block is fixedly connected to the cylinder by bolts.

[0009] A needle pressing jig for the plug of an engine wiring harness connector of the present utility model, wherein the reversing valve is a manual reversing valve.

[0010] A needle pressing jig for the plug of an engine wiring harness connector of the present utility model, wherein the pressure reducing valve is connected to the air cylinder; the reversing valve is connected to the air cylinder.

[0011] A needle pressing jig for the plug of an engine wiring harness connector of the present utility model, wherein the small holes on the needle sleeve fixing block have different diameters. According to the process requirements, the needle sleeve fixing block can be provided with different holes corresponding to different models of needle sleeves, aiming to improve the compatibility of the needle sleeve fixing block.

[0012] A needle pressing jig for the plug of an engine wiring harness connector of the present utility model, wherein a groove is formed at the contact between the thimble and the probe needle sleeve.

[0013] The beneficial effects of the present utility model:

[0014] 1. This needle pressing jig forms a groove on the surface of the probe needle sleeve, and there is an interference fit between the probe and the needle sleeve, reducing the risk of the probe falling out of the needle sleeve and improving the production yield;

[0015] 2. The needle sleeve fixing block is fixed by cooperating with the positioning pin, and it can be taken out to place the needle sleeve, which is convenient for operation;

[0016] 3. For needle sleeves with different outer diameters, different placement holes can be provided on the needle sleeve fixing block, having good compatibility; 4. This needle pressing jig can not only be used for engine cold testing, but also be applied to other industries using probe components Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of an existing engine wiring harness connector plug and an engine wiring harness connector.

[0018] In the figure, 1'-engine wiring harness connector plug, 2'-engine wiring harness connector, 3'-engine wiring harness connector pin, 4'-probe, 5'-probe needle sleeve.

[0019] Figure 2 It is a schematic diagram of the needle pressing jig for the engine wiring harness connector plug.

[0020] Figure 3 It is a schematic diagram of the probe needle sleeve.

[0021] In the figure, 1-base, 2-thimble fixing block, 3-thimble, 4-positioning pin fixing seat, 5-needle sleeve fixing block, 6-air cylinder, 7-guide rod, 8-positioning pin, 9-pressure reducing valve, 10-reversing valve, 11-probe needle sleeve. Detailed Embodiments

[0022] The present utility model will be more clearly and completely described below by way of embodiments in conjunction with the accompanying drawings.

[0023] As Figure 2 shown: Component 1 is the base, Component 2 is the ejector pin fixing block, Component 3 is the ejector pin, Component 4 is the locating pin fixing seat, Component 5 is the needle sleeve fixing block, Component 6 is the cylinder, Component 7 is the guide rod, Component 8 is the locating pin, Component 9 is the pressure reducing valve, Component 10 is the reversing valve, and Component 11 is the probe needle sleeve.

[0024] The ejector pin 3 is fixed on the ejector pin fixing block of Component 2 by threaded connection. The ejector pin fixing block of Component 2 is fixed to the cylinder of Component 6 by bolt connection. The guide rod of Component 7 is positioned in cooperation with the ejector pin fixing block of Component 2. The locating pin of Component 8 is positioned and fixed to the locating pin fixing seat of Component 4 through the locating hole. The probe needle sleeve of Component 11 is placed in the needle sleeve fixing block of Component 5. The needle sleeve fixing block of Component 5 is positioned in cooperation with the locating pin of Component 8. The pressure reducing valve of Component 9, the reversing valve of Component 10, the cylinder of Component 6, and the locating pin fixing seat of Component 4 are fixed on the base of Component 1.

[0025] Figure 3 In, the needle sleeve fixing block 5 is provided with two specifications of holes, which can correspond to two models of needle sleeves (different outer diameters of the needle sleeves), namely the small hole 12 and the large hole 13. The probe needle sleeve is set in advance in the required small hole as needed.

[0026] The working process of the present utility model is as follows:

[0027] According to the outer diameter size of the probe needle sleeve of Component 11, it is placed into the corresponding hole position of the needle sleeve fixing block of Component 5. The needle sleeve fixing block of Component 5 is positioned in cooperation with the locating pin of Component 8 fixed on the locating pin fixing seat of Component 4. The input pressure of the cylinder of Component 6 is controlled by adjusting the pressure reducing valve of Component 9, and the button of the reversing valve of Component 10 is pressed to make the cylinder of Component 6 move forward, that is, to drive the ejector pin of Component 3 fixed on the ejector pin fixing block of Component 2 to move forward until it presses the probe needle sleeve of Component 11, and a groove is formed at the contact position between the ejector pin of Component 3 and the probe needle sleeve of Component 11. Rotate the manual reversing valve knob of Component 10 to make the cylinder of Component 6 return, and the ejector pin of Component 3 retracts to the initial position. The needle sleeve fixing block of Component 5 and the probe needle sleeve of Component 11 are taken out in sequence; first, the probe needle sleeve 11 is installed into the small hole, and then the probe is placed into the probe needle sleeve of Component 11 with the groove formed, and assembled to the plug of the engine wiring harness connector.

Claims

1. An engine harness connector plug press needle jig, characterized in that: The engine harness connector plug press needle jig comprises an ejector pin fixing block (2) and an ejector pin (3) fixed on the ejector pin fixing block (2), wherein the ejector pin fixing block (2) is fixedly connected to a cylinder (6); the ejector pin fixing block (2) is provided with a positioning hole matching the size of a guide rod (7); one end of the guide rod (7) is fixed on a positioning pin fixing seat (4), wherein the positioning pin fixing seat (4) is provided with a positioning hole for inserting a positioning pin (8); the positioning pin fixing seat (4) is provided with a needle sleeve fixing block (5), wherein the needle sleeve fixing block (5) is provided with a plurality of small holes, wherein a probe needle sleeve (11) is provided in each of the small holes; The cylinder (6) and the positioning pin fixing seat (4) are fixed on the base (1); the base (1) is also provided with a pressure reducing valve (9) and a reversing valve (10).

2. The engine wiring harness connector plug press needle jig according to claim 1, characterized in that: The ejector pin (3) is fixed on the ejector pin fixing block (2) via a threaded connection.

3. The engine wiring harness connector plug press needle jig according to claim 1, characterized in that: The ejector pin fixing block (2) is fixed to the cylinder (6) by bolt connection.

4. The engine wiring harness connector plug press needle jig according to claim 1, characterized in that: The reversing valve (10) is a manual reversing valve.

5. The engine wiring harness connector plug press needle jig according to claim 1, characterized in that: The pressure reducing valve (9) is connected to the cylinder (6); and the reversing valve (10) is connected to the cylinder (6).

6. The engine wiring harness connector plug press needle jig according to claim 1, characterized in that: The small holes on the needle sleeve fixing block (5) have different diameters.

7. The engine harness connector plug press needle jig according to claim 1, characterized in that: A groove is formed at the contact point between the ejector pin (3) and the probe needle sleeve (11).

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