Air tightness detection device for wire harness rubber sleeve

Abstract

The utility model provides a wire harness rubber sleeve air tightness detection device comprising a pedestal, the top of the pedestal is fixedly provided with an air storage cylinder, one side of the air storage cylinder is connected with an air inlet pipe, the top of the air storage cylinder is detachably provided with a module cover, the module cover is provided with a rubber sleeve, the rubber sleeve is provided with a wire harness, and the wire harness is arranged on the wire harness. Two pressing claw assemblies are arranged above the rubber sleeve in an up-down staggered mode, the distance between the two pressing claw assemblies in the vertical direction is not smaller than the outer diameter of the wire harness, and a downward pressing driving mechanism for driving the pressing claw assemblies to move downwards or reset is erected above the pressing claw assemblies. The pressing claw assembly is provided with a semi-arc-shaped plate matched with the edge of the rubber sleeve, and the middle of the semi-arc-shaped plate is detachably and fixedly connected with the lower end of the downward pressing driving mechanism; according to the utility model, the connection stability between the rubber sleeve and the mold cover plate can be improved, and normal detection is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of wire harness testing technology, specifically relating to a device for testing the airtightness of wire harness sleeves. Background Technology

[0002] The air tightness test of wire harness sleeves is a test method specifically used to inspect the sealing performance of rubber or plastic sealing sleeves on wire harnesses.

[0003] The core principle of wire harness sleeve air tightness testing is to fill the sleeve or closed cavity with compressed air (or inert gas) at a certain pressure, and then use precision instruments to monitor the decrease in gas pressure or the amount of leakage within a specified time. This determines whether there is a leak in the sleeve and whether the seal is qualified, ensuring that the wire harness can effectively prevent water, dust and moisture in subsequent use, and protect the internal wires and connectors from external environmental corrosion.

[0004] In the prior art, Chinese utility model patent document with authorization announcement number CN218156725U discloses a tooling for testing the air tightness of wire harness sleeves. Each time the air tightness of different sleeves is measured, only a simple operation of changing the cover that matches the sleeve being tested is required, which improves the convenience and applicability of testing to a certain extent. However, since the sleeve is made of elastic material, when it is clamped inside the air outlet of the mold cover plate for testing, the air pressure acting on the sleeve can easily push the sleeve out from inside the air outlet of the mold cover plate, causing the test to fail and requiring repeated testing.

[0005] Therefore, there is a need for an airtightness testing device for wire harness sleeves that can improve the connection stability between the sleeve and the mold cover plate and ensure normal testing, in order to solve the current technical problems. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an airtightness testing device for wire harness sleeves that can improve the connection stability between the sleeve and the mold cover plate and ensure normal testing.

[0007] The technical solution of this utility model is as follows: an airtightness testing device for wire harness sleeves, including a base, an air storage cylinder fixedly installed on the top of the base, an air inlet pipe connected to one side of the air storage cylinder, a module cover detachably installed on the top of the air storage cylinder, a sleeve installed on the module cover, a wire harness installed on the sleeve, two pressure claw assemblies staggered vertically above the sleeve, the vertical distance between the two pressure claw assemblies being not less than the outer diameter of the wire harness, a downward pressure driving mechanism for driving the pressure claw assemblies to move downward or reset is mounted above the pressure claw assemblies; the pressure claw assembly has a semi-circular arc plate that matches the edge of the sleeve, and the middle part of the semi-circular arc plate is detachably and fixedly connected to the lower end of the downward pressure driving mechanism.

[0008] Furthermore, the pressing drive mechanism has a mounting seat that is slidably disposed above the rubber sleeve in a vertical direction, and a cylinder that drives it to move down or reset is disposed above the mounting seat; a connecting plate is fixedly disposed in the middle of the semi-circular arc plate, and the connecting plate is detachably fixedly connected to the mounting seat.

[0009] Furthermore, a bracket is fixedly provided on the top of the base, and a guide rod is vertically fixedly provided on the top of the mounting base, with the guide rod slidably connected to the bracket.

[0010] Furthermore, the bracket has an L-shaped frame vertically fixed to the top of the base, a horizontal plate fixed to the upper end of the L-shaped frame, the cylinder fixed to the top of the horizontal plate, and the guide rod slidably connected to the horizontal plate vertically.

[0011] Furthermore, the mounting base has U-shaped grooves evenly distributed on it, and the top of the connecting plate is vertically fixed with studs corresponding to the U-shaped grooves. The studs are fitted with lock nuts for locking or releasing them from the mounting base.

[0012] Furthermore, a pressure gauge is connected to the air storage cylinder via a pipeline, an air compressor is connected to the end of the air inlet pipe opposite to the air storage cylinder, and a shut-off valve is installed on the air inlet pipe.

[0013] Furthermore, the connecting plate and the semi-circular arc plate are connected to form an integral structure, and the mounting base is a circular plate.

[0014] The beneficial effects of this utility model are:

[0015] (1) In this utility model, the rubber sleeve at one end of the wire harness is installed inside the air outlet of the module cover. A downward driving mechanism drives a semi-circular arc plate to press down on one side of the top of the rubber sleeve, and pushes the wire harness to the side close to the rubber sleeve. Then another downward driving mechanism drives another semi-circular arc plate to press down on the other side of the top of the rubber sleeve. At this time, a certain pressure of gas can be introduced into the air storage cylinder for detection.

[0016] (2) During the testing process, the top of the rubber sleeve is pressed and fixed by the pressure claw assembly, which improves the connection stability between the rubber sleeve and the mold cover plate. The rubber sleeve will not be pushed out during the air ventilation test, ensuring that the test is carried out normally.

[0017] (3) By driving two pressure claw assemblies arranged in an alternating manner through two pressure driving mechanisms, the wire harness can be placed into the two pressure claw assemblies, thus avoiding interference between the wire harness and the pressure claw assemblies during pressure.

[0018] (4) The two semi-circular arc plates are just put together to form a circular structure that matches the edge of the rubber sleeve, which can evenly press the four edges of the rubber sleeve onto the top of the module cover. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the airtightness testing device for the wire harness sleeve in this utility model.

[0020] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle. Detailed Implementation

[0021] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0022] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] like Figure 1 and 2 As shown, an airtightness testing device for a wire harness sleeve is disclosed, including a base 1, an air storage cylinder 2 fixedly mounted on the top of the base 1, an air inlet pipe 21 connected to one side of the air storage cylinder 2, a module cover 3 detachably mounted on the top of the air storage cylinder 2, a sleeve 4 mounted on the module cover 3, a wire harness 5 mounted on the sleeve 4, two pressure claw assemblies 7 staggered vertically above the sleeve 4, the vertical distance between the two pressure claw assemblies 7 is not less than the outer diameter of the wire harness 5, and a downward pressure driving mechanism 8 for driving the pressure claw assemblies 7 to move downward or reset is mounted above the pressure claw assemblies 7; the pressure claw assembly 7 has a semi-circular arc plate 71 that matches the edge of the sleeve 4, and the middle part of the semi-circular arc plate 71 is detachably and fixedly connected to the lower end of the downward pressure driving mechanism 8.

[0024] In the above embodiment, the rubber sleeve 4 at one end of the wire harness 5 is installed inside the air outlet of the module cover 3. A pressing drive mechanism 8 drives a semi-circular arc plate 71 to press down on one side of the top of the rubber sleeve 4, pulling the wire harness closer to the pressed side of the rubber sleeve 4. Then, another pressing drive mechanism 8 drives another semi-circular arc plate 71 to press down on the other side of the top of the rubber sleeve 4. At this time, a certain pressure of gas can be introduced into the air storage cylinder 2 for detection. During the detection process, the top of the rubber sleeve 4 is pressed and fixed by the pressure claw assembly 7, lifting the rubber sleeve 4. The connection stability between sleeve 4 and mold cover plate 3 ensures that sleeve 4 will not be pushed out during ventilation testing, thus guaranteeing normal testing. Two pressing drive mechanisms 8 drive two staggered pressure claw assemblies 7 to press down on sleeve 4, allowing wire harness 5 to be placed inside the two pressure claw assemblies 7, avoiding interference between wire harness 5 and pressure claw assemblies 7 during pressing. Two semi-circular arc plates 71 are assembled to form a ring structure that matches the edge of sleeve 4, which can evenly press the four edges of sleeve 4 onto the top of module cover 3.

[0025] In some embodiments, the pressing drive mechanism 8 has a mounting base 83 that is slidably disposed above the rubber sleeve 4 in a vertical direction, and a cylinder 81 that drives it to move down or reset is disposed above the mounting base 83; by controlling the air pressure of the cylinder 81, the clamping force of the clamping claw assembly 7 on the rubber sleeve 4 can be adjusted to make the clamping force moderate and avoid excessive clamping force that could damage the rubber sleeve 4; a connecting plate 72 is fixedly disposed in the middle of the semi-circular arc plate 71, and the connecting plate 72 is detachably fixedly connected to the mounting base 83; the detachable design of the semi-circular arc plate 71 allows for the selection of a matching clamping claw assembly 7 according to rubber sleeves 4 with different outer diameters, thereby improving its applicability.

[0026] In some embodiments, a bracket 6 is fixedly provided on the top of the base 1, and a guide rod 82 is vertically fixedly provided on the top of the mounting base 83. The guide rod 82 is slidably connected to the bracket 6. The mounting base 83 is slidably connected to the bracket 6 through the guide rod 82, which can improve the stability of the mounting base 83 moving up and down, and at the same time prevent the mounting base 83 from rotating, thus ensuring the positional accuracy of the semi-circular arc plate 71.

[0027] In some embodiments, the bracket 6 has an L-shaped frame 61 that is vertically fixedly disposed on the top of the base 1, a horizontal plate 62 that is fixedly disposed on the upper end of the L-shaped frame 61, a cylinder 81 that is fixedly disposed on the top of the horizontal plate 62, and a guide rod 82 that is vertically slidably connected to the horizontal plate 62.

[0028] In some embodiments, the mounting base 83 has U-shaped grooves 84 evenly spaced, and the top of the connecting plate 72 is vertically fixed with studs 73 corresponding to the U-shaped grooves 84. The studs 73 are fitted with locking nuts 74 for locking or releasing between them and the mounting base 83. After removing the locking nuts 74 from the studs 73, the clamping claw assembly 7 can be removed from the mounting base 83. After selecting the desired clamping claw assembly 7 and installing the studs 73 on its top corresponding to the U-shaped grooves 84, the locking nuts 74 are fitted on the studs 73 to lock and fix the studs 73 to the mounting base 83.

[0029] In some embodiments, a pressure gauge is connected to the air storage cylinder 2 via a pipeline. The pressure gauge is used to detect the internal air pressure of the air storage cylinder 2. An air compressor is connected to the end of the air inlet pipe 21 away from the air storage cylinder. A shut-off valve is installed on the air inlet pipe 21. By observing the pressure gauge, gas is injected into the air storage cylinder 2 through the air compressor via the air inlet pipe 21. When the pressure gauge shows that the air pressure has reached the detection pressure, the gas injection is stopped and the air inlet pipe 21 is shut off through the shut-off valve. After maintaining this for a period of time, the decrease in the air pressure value displayed on the pressure gauge is observed to see if it meets the requirements.

[0030] In some embodiments, the connecting plate 72 and the semi-circular arc plate 71 are connected to form an integral structure with high connection strength. The mounting base 83 is a circular plate, and the shape of the connecting plate 72 matches that of the mounting base 83.

[0031] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0032] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A harness boot air tightness detection device, characterized by: The device includes a base, on the top of which an air reservoir is fixedly mounted. An air inlet pipe is connected to one side of the air reservoir. A module cover is detachably mounted on the top of the air reservoir. A rubber sleeve is mounted on the module cover, and a wire harness is mounted on the rubber sleeve. Two pressure claw assemblies are arranged alternately above the rubber sleeve, with the vertical distance between the two pressure claw assemblies not less than the outer diameter of the wire harness. A downward pressure drive mechanism is mounted above the pressure claw assemblies to drive them to move downward or reset. The pressure claw assembly has a semi-circular arc plate that matches the edge of the rubber sleeve, and the middle part of the semi-circular arc plate is detachably and fixedly connected to the lower end of the downward pressure drive mechanism.

2. The harness boot air tightness testing apparatus of claim 1, wherein: The pressing drive mechanism has a mounting seat that is slidably disposed above the rubber sleeve in a vertical direction, and a cylinder that drives it to move down or reset is disposed above the mounting seat. A connecting plate is fixedly installed in the middle of the semi-circular arc plate, and the connecting plate is detachably and fixedly connected to the mounting base.

3. The harness boot air tightness testing apparatus of claim 2, wherein: A bracket is fixedly installed on the top of the base, and a guide rod is vertically fixedly installed on the top of the mounting base. The guide rod is slidably connected to the bracket.

4. The harness boot air tightness testing apparatus of claim 3, wherein: The bracket has an L-shaped frame that is vertically fixed to the top of the base. A horizontal plate is fixed to the upper end of the L-shaped frame. The cylinder is fixed to the top of the horizontal plate. The guide rod is vertically slidably connected to the horizontal plate.

5. The airtightness testing device for wire harness sleeves according to claim 2, characterized in that: The mounting base has U-shaped grooves evenly spaced, and the top of the connecting plate is vertically fixed with studs corresponding to the U-shaped grooves. The studs are fitted with lock nuts for locking or releasing them from the mounting base.

6. The airtightness testing device for wire harness sleeves according to claim 1, characterized in that: A pressure gauge is connected to the air storage cylinder via a pipeline, and an air compressor is connected to the end of the air inlet pipe opposite to the air storage cylinder. A shut-off valve is installed on the air inlet pipe.

7. The airtightness testing device for wire harness sleeves according to claim 2, characterized in that: The connecting plate and the semi-circular arc plate are connected to form an integral structure, and the mounting base is a circular plate.

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