Air pipe structure of short sample drying sleeve for airtight test

Abstract

The utility model provides a short sample drying sleeve air pipe structure for airtight test, which comprises a wire harness short sample, the wire harness short sample comprises a connector needing waterproof test, the connector is a three-section stepped shaft, a first section shaft of the three-section stepped shaft is connected with a wire harness end, a second section shaft of the three-section stepped shaft is a large end, an outer ring of the second section shaft is provided with one end of a transparent PVC (polyvinyl chloride) air pipe, and the other end of the transparent PVC air pipe is connected with the connector. The other end of the transparent PVC air pipe is connected with waterproof test equipment; a first waterproof heat shrink tube is arranged on the outer ring of one end of the first section shaft and the outer ring of one end of the transparent PVC air tube. According to the utility model, testing is carried out by making a short sample, the made wiring harness short sample is connected with the air pipe, the first section of shaft and the outer ring of one end of the transparent PVC air pipe are plugged by using the first waterproof heat shrink tube, testing is carried out after processing, real-vehicle detection of the whole wiring harness assembly is replaced, equivalent replacement is realized, simplicity and effectiveness are realized, the experiment cost is reduced, and the experiment period is shortened; and the actual requirements of customers are simulated and met.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile wiring harness airtightness test devices, in particular to a short sample drying sleeve air pipe structure for airtightness testing. Background Art

[0002] Currently, automotive waterproofing requirements are becoming increasingly stringent. Automotive wiring harnesses, installed in vehicles as power and signal transmission systems, also face increasingly stringent waterproofing requirements. This is especially true for wiring harness components located in wet areas of the vehicle, which must meet certain waterproofing requirements. However, this technology suffers from the following technical drawbacks: The entire wiring harness assembly undergoes on-vehicle testing, resulting in long testing cycles and high testing costs.

[0003] Therefore, how to design a short sample drying sleeve air pipe structure for air tightness testing has become an urgent problem to be solved. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a short sample drying sleeve air pipe structure for air tightness testing to solve at least one of the above technical problems.

[0005] The technical solution of the utility model is: a short sample drying sleeve air pipe structure for air tightness testing, including a short sample of a wiring harness, the short sample of the wiring harness including a connector that needs to be tested for waterproofing, the connector is a three-section stepped shaft, the first section of the three-section stepped shaft is connected to the wiring harness end, the second section of the shaft is the large end, the outer ring of the second section of the shaft is provided with one end of a transparent PVC air pipe, and the other end of the transparent PVC air pipe is connected to a waterproof testing device; the first section of the shaft and the outer ring of one end of the transparent PVC air pipe are jointly provided with a first waterproof heat shrink tube.

[0006] The utility model adopts the method of making short samples for testing. The made short sample of the wiring harness is connected to the air pipe, and the first section of the shaft and the outer ring of one end of the transparent PVC air pipe are sealed with a first waterproof heat shrink tube. After processing, it is tested to replace the actual vehicle testing of the entire wiring harness assembly. The equivalent replacement is simple and effective, reduces the experimental cost, shortens the experimental cycle, is convenient for testing, and simulates the actual situation to meet customer needs. It can be used for all wiring harness products located in wet areas and dry areas with waterproof requirements. Connectors and other connecting components are waterproof performance testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a structural diagram of Example 1 of the present utility model.

[0008] Figure 2 This is a structural diagram of embodiment 5 of the present utility model.

[0009] In the figure: 1. Connector; 2. First waterproof heat shrink tubing; 3. Transparent PVC air tube; 4. Second heat shrink tubing. DETAILED DESCRIPTION

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] See Figure 1-2 The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. They are not used to limit the conditions for the implementation of this utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by this utility model without affecting the efficacy and purpose that can be achieved by this utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this utility model without substantially changing the technical content.

[0012] Example 1: A short sample drying sleeve air pipe structure for airtightness test, reference Figure 1 , including a short sample of a wiring harness with multiple wiring harness ends, the short sample of the wiring harness including a connector 1 that needs to be tested for waterproofing, the connector 1 being a three-section stepped shaft, the first section of the three-section stepped shaft being connected to the wiring harness end, the second section being the large end, and the third section being the small end; the outer ring of the second section of the shaft being provided with one end of a transparent PVC air tube 3, the other end of the transparent PVC air tube 3 being connected to a waterproofing test device; the outer rings of the first section of the shaft and one end of the transparent PVC air tube 3 being provided with a first waterproof heat shrink tube 2. The utility model adopts a short sample production method for testing, the produced short sample of the wiring harness is connected to the air tube, and the outer rings of the first section of the shaft and one end of the transparent PVC air tube are sealed with a first waterproof heat shrink tube, and then tested after processing, replacing the actual vehicle testing of the entire wiring harness assembly, which is an equivalent replacement, simple and effective, reduces experimental costs, shortens experimental cycles, facilitates testing, and simulates actual conditions to meet customer needs. It can be used for waterproofing performance testing of connectors and other connecting components of all wiring harness products located in wet and dry areas with waterproofing requirements.

[0013] Example 2: Based on Example 1, the first waterproof heat shrink tube 2 is a stepped sleeve structure, the inner ring of which is provided with a first adhesive layer, and the first waterproof heat shrink tube 2 is baked to connect the first section of the shaft and one end of the transparent PVC air tube 3 into one piece. The present utility model adopts a first waterproof heat shrink tube with a stepped sleeve structure, the inner ring of which is provided with a first adhesive layer, and the first section of the shaft and one end of the transparent PVC air tube are baked to connect the first section of the shaft into one piece, ensuring a tight connection without air leakage. The short sample product produced can be directly used for testing on airtightness testing equipment without any other processing.

[0014] Embodiment 3: Based on embodiment 1, the reserved line-swinging length of the short wire harness sample is 200-250 mm. The utility model adopts a reserved line-swinging length of 200-250 mm, which ensures a reasonable line-swinging length.

[0015] Example 4: Based on Example 1, the transparent PVC air tube 3 is 60 mm long and 8 mm in diameter. This utility model uses a 60 mm section of transparent PVC air tube cut from a roll of the tube. This section of tube is connected to the waterproof test specimen and serves as a connecting component between the waterproof test equipment and the test specimen.

[0016] Example 5: Based on Example 1, refer to Figure 2 The other ends of the short wire harness sample are sealed by the second heat shrink tube 4. The utility model adopts the method of making a short sample for testing. The made wire harness ends are sealed by the second heat shrink tube. After processing, the test is done, replacing the actual vehicle test of the entire wire harness assembly. It is an equivalent replacement, simple and effective, reducing the experimental cost and shortening the experimental cycle.

[0017] Example 6: Based on Example 5, the second heat shrink tube 4 is a straight tubular structure, and the inner ring of the straight tubular structure is provided with a second adhesive layer. The utility model adopts a straight tubular second heat shrink tube, and the size of the second heat shrink tube is sufficient to pass through the wire and fix it to the wire after heat shrinkage, ensuring a tight seal without air leakage.

[0018] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A short sample drying sleeve trachea structure for air tightness test, including a short sample of a wiring harness, characterized by: The short wire harness sample comprises a connector (1) to be tested for waterproofing, the connector (1) being a three-section stepped shaft, the first section of the three-section stepped shaft being connected to the wire harness end, the second section of the shaft being the large end, the outer ring of the second section of the shaft being provided with one end of a transparent PVC air tube (3), the other end of the transparent PVC air tube (3) being connected to a waterproofing test device; the outer rings of the first section of the shaft and one end of the transparent PVC air tube (3) being provided with a first waterproof heat shrink tube (2) in common.

2. The short sample drying sleeve air pipe structure for air tightness test according to claim 1, characterized in that: The first waterproof heat shrink tube (2) is a stepped shaft sleeve structure, the inner ring of the stepped shaft sleeve structure is provided with a first adhesive layer, and the first waterproof heat shrink tube (2) connects the first shaft and one end of the transparent PVC air tube (3) into one body by baking.

3. The short sample drying sleeve air pipe structure for air tightness test according to claim 1, characterized in that: The reserved wire-swinging length of the short wire harness sample is 200~250mm.

4. The short sample drying sleeve air pipe structure for air tightness test according to claim 1, characterized in that: The length of the transparent PVC air tube (3) is 60 mm.

5. The short sample drying sleeve air pipe structure for air tightness test according to claim 1, characterized in that: The other wire harness ends of the short wire harness sample are sealed by a second heat shrink tube (4).

6. The short sample drying sleeve air pipe structure for air tightness test according to claim 5, characterized in that: The second heat shrink tube (4) is a straight tube structure, and the inner ring of the straight tube structure is provided with a second adhesive layer.

Images