A through-the-cylinder connector, through-the-cylinder harness assembly, and vehicle

Abstract

This utility model discloses a cylinder-through connector, a cylinder-through wiring harness assembly, and a vehicle, belonging to the field of sensor technology. Its main body housing is configured to be fitted to the cylinder body; the main body housing has mounting ears for installation and fixation; a plug-in portion located at one end of the main body housing has several conductive pins inside; a sealing portion located at the other end of the main body housing faces the inner side of the cylinder body and forms a sealing cavity, with the conductive pins extending into the sealing cavity; a sealing end plate placed in the sealing cavity has a groove above it, and a through hole is formed inside along the length center axis of the sealing end plate, through which the conductive pins pass, with their ends extending to the bottom of the groove; and a sealing layer made of adhesive fills the through hole and the groove, with the outer end face of the sealing layer flush with the end face of the sealing portion, so that the adhesive can seal the connection between the wiring harness and the conductive pins, effectively preventing airtightness issues.

Description

Technical Field

[0001] This utility model belongs to the field of sensor technology, and more specifically, relates to a cylinder connector, a cylinder wiring harness assembly, and a vehicle. Background Technology

[0002] In the design and manufacturing of new energy vehicles, electrical connections need to adapt to complex vehicle structures, especially in cases involving penetration into cylinders (such as the cylinder-shaped housings of battery packs and powertrain components). Traditional connectors struggle to balance the sealing requirements after penetration with reliable electrical connections, leading to issues such as seal failure resulting in liquid or gas leaks affecting vehicle performance, or insufficient connector structural strength and poor conductivity stability. These limitations fail to meet the high safety, reliability, and durability requirements of new energy vehicles. Therefore, a dedicated cylinder-penetrating connector is needed to address these pain points through optimized structural design.

[0003] To address the aforementioned issues, a search revealed that patent application CN113783024A discloses a cylinder insertion connector, comprising a base, terminals, a first wire, a second wire, and a sealing compound. The base has a first end and a second end, with an axially extending through-hole penetrating both ends. Terminals are disposed within the through-hole, with one end extending towards one end of the through-hole and the other end extending towards the other end. The connecting end of the first wire is electrically connected to one end of the terminal and falls into the through-hole. The connecting end of the second wire is electrically connected to the other end of the terminal and falls into the through-hole. The sealing compound seals and fills the spaces between the connecting end of the first wire and the inner wall of the through-hole, between the terminal and the inner wall of the through-hole, and between the connecting end of the second wire and the inner wall of the through-hole. However, as can be seen from the patent drawings, when the wire harness is connected to the terminal and subsequently injection-molded into the cylinder insertion insert or inserted into the corresponding slot within the insert, the connection point between the wire harness and the conductive pin is exposed on the outside, resulting in poor airtightness. Summary of the Invention

[0004] 1. The problem to be solved

[0005] To address the technical problems existing in the prior art, this utility model provides a cylinder connector that improves the airtightness at the connection between the wire harness and the conductive pin.

[0006] Another objective of this invention is to provide a cylinder-through connector wiring harness assembly having the aforementioned cylinder-through connector.

[0007] Another objective of this invention is to provide a vehicle with a cylinder-through wiring harness assembly.

[0008] 2. Technical Solution

[0009] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0010] The first aspect of this utility model provides a cylinder-penetrating connector, comprising:

[0011] The main body shell is made of insulating material and is configured to be fitted with a cylinder body; the main body shell is provided with mounting ears for mounting and fixing.

[0012] One end of the main body shell is provided with a plug-in part, and a plurality of conductive pins are provided inside the plug-in part. The conductive pins are arranged in an orderly manner to realize circuit connection. The other end of the main body shell is provided with a sealing part. The sealing part faces the inner side of the cylinder and forms a sealing cavity. The conductive pins extend into the sealing cavity.

[0013] A sealing end plate placed in the sealing cavity has a groove on its upper part and a through hole opened inside along the length center axis of the sealing end plate. The conductive pin passes through the through hole, and at least part of its end extends to the bottom of the groove, with the end flush with the bottom or extending beyond the bottom by 0.2-0.5 mm.

[0014] A sealing layer made of adhesive is filled in the through holes and grooves. Preferably, the outer end face of the sealing layer is flush with the end face of the sealing part, so that the adhesive can seal the connection between the wire harness and the conductive pin, which can effectively prevent airtightness problems.

[0015] According to any embodiment of the first aspect of the present invention, the through hole and the conductive pin are fitted with a gap, allowing the gap between them to be filled with a sealing layer formed by adhesive, thereby further achieving a sealing effect. The adhesive can fill downwards along the gap until it is completely filled, which reduces the amount of adhesive used; on the other hand, the adhesive completely covers the conductive pin from top to bottom, resulting in a good sealing effect.

[0016] According to any embodiment of the first aspect of the present invention, the number of through holes is matched with the number of conductive pins, wherein the sealing end plate can separate several conductive pins to avoid short circuits in the conductive pins.

[0017] According to any embodiment of the first aspect of the present invention, a sealing element is provided in the middle of the main body shell to achieve sealing on both sides of the cylinder body after cylinder installation. The sealing effect is achieved by the rubber ring directly contacting the cylinder body to prevent liquid and gas leakage.

[0018] According to any embodiment of the first aspect of the present invention, the sealing part is provided with at least one relief hole, so that when the glue is overfilled, some of the glue can overflow from the relief hole.

[0019] According to any embodiment of the first aspect of the present invention, the conductive pins are made of copper or copper alloy and the surface is treated with anti-oxidation, such as tin plating or silver plating, to improve conductivity stability and corrosion resistance. The number of conductive pins is 8-12, and they are arranged in a matrix or linear pattern within the plug to ensure accurate connection with the adapter plug.

[0020] According to any embodiment of the first aspect of the present invention, the sealing element is a sealing ring made of rubber or silicone, with a cross-section that is circular, rectangular or irregular, adapted to the sealing requirements after the main body shell and cylinder are installed. The sealing ring is interference-fitted with the main body shell or installed by means of a slot or other structure to ensure that the sealing element is stable and the sealing is reliable after installation.

[0021] According to any embodiment of the first aspect of the present invention, the main body shell is made of a high-temperature resistant and impact-resistant insulating material, such as PBT, PA66, PPS, etc., to adapt to the high temperature and vibration environment of the cylinder. The mounting holes of the mounting ears are round, oblong, or other shapes to accommodate mounting screws or bolts, which facilitates use in different assembly scenarios.

[0022] The second aspect of this utility model provides a cylinder-through connector wiring harness assembly, including the cylinder-through connector described in the first aspect and a wiring harness connecting a rotary transformer and a connector, wherein the wiring harness and the cylinder-through connector are sealed by a sealing layer.

[0023] The third aspect of this utility model provides a vehicle having the cylinder-mounted wiring harness assembly described in the second aspect above, wherein the cylinder-mounted wiring harness assembly is mounted on the cylinder block of the vehicle.

[0024] 3. Beneficial effects

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] (1) In the cylinder connector of this utility model, the end of the conductive pin extends to the bottom of the groove and is flush with it; the sealing layer made of glue in the through hole and the groove allows the glue to seal the connection between the wire harness and the conductive pin, which can effectively prevent air tightness problems.

[0027] (2) The main body shell of the cylinder connector of this utility model is made of high temperature and impact resistant insulating material, which is suitable for high temperature and vibration environment. The mounting holes of the mounting ears are round, waist-shaped or other shapes to match the mounting screws or bolts, which is convenient for use in different assembly scenarios. Attached Figure Description

[0028] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of this utility model. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0029] Figure 1 This is a three-dimensional structural diagram of the cylinder connector of this utility model;

[0030] Figure 2 This is a schematic diagram of the main structure of the cylinder connector of this utility model;

[0031] Figure 3 This is a cross-sectional schematic diagram of the cylinder connector of this utility model;

[0032] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0033] Figure 5 This is a three-dimensional structural diagram of the main body shell of the cylinder connector of this utility model;

[0034] Figure 6 This is a schematic diagram of the main body shell structure of the cylinder connector of this utility model;

[0035] Figure 7 This is a schematic cross-sectional view of the main body shell of the cylinder connector of this utility model;

[0036] Figure 8 This is a schematic diagram of the assembly structure of the sealing end plate and conductive pin of the cylinder connector of this utility model.

[0037] Figure 9 This is a schematic diagram of the cylinder-through wiring harness assembly of this utility model;

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Main body shell; 110. Mounting ear; 120. Insertion part; 121. Conductive pin; 130. Sealing part; 131. Sealing cavity; 132. Lightening hole; 140. Seal;

[0040] 200, Sealing end plate; 210, Groove; 220, Through hole;

[0041] 300. Sealing layer;

[0042] 400. Rotary transformer;

[0043] 500. Connectors;

[0044] 600. Wiring harness. Detailed Implementation

[0045] The following detailed description of exemplary embodiments of the present invention refers to the accompanying drawings, which form part of the description, illustrating exemplary embodiments in which the present invention may be implemented. Although these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from the spirit and scope thereof. The more detailed description of embodiments of the present invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and does not limit the description of the features and characteristics of the invention, in order to suggest the best mode for carrying out the invention and sufficient to enable those skilled in the art to implement it. Therefore, the scope of the present invention is defined only by the appended claims.

[0046] The following detailed description and exemplary embodiments of the present invention can be better understood in conjunction with the accompanying drawings, wherein the elements and features of the present invention are identified by reference numerals.

[0047] Existing cylinder penetration connectors generally use a plug-in connection, where the male pins or plugs are directly inserted into the female hole or groove. During insertion, the metal contacts of the male and female ends come into contact with each other to form an electrical connection. However, this plug-in connection occupies a large area, which is not conducive to installation when the cylinder space is small. In addition, the number of adapter connectors is large, which will seriously reduce the stability and sealing of the electrical connection of the cylinder penetration connector. Another type of cylinder penetration connector connects to the cylinder body by installing the wire harness that needs to be electrically connected and passing it through the cylinder penetration connector. However, the wire harness has a large range of movement in the cylinder penetration connector, resulting in poor sealing and also seriously affecting the stability of the electrical connection.

[0048] Example 1

[0049] like Figures 1 to 8 As shown, the cylinder connector of this utility model includes a main body shell 100, a sealing end plate 200, and a sealing layer 300. This embodiment takes an oil-cooled motor from a new energy vehicle as an example; correspondingly, the cylinder refers to the motor housing.

[0050] Among them, such as Figure 3 , Figure 4 and Figure 8As shown, the sealing end plate 200 is placed in the sealing cavity 131. The sealing end plate 200 is made of PA66, PC, PPS or PEEK material. A groove 210 is provided on the upper part of the sealing end plate 200. Twelve through holes 220 are opened inside the sealing end plate 200 along the length center axis. The number of through holes 220 matches the number of conductive pins 121. The conductive pins 121 pass through the through holes 220 and their ends extend to the bottom of the groove 210 and are flush with it.

[0051] The groove 210 mentioned above is square or rectangular in shape, which can provide a wider injection port for dispensing, thus improving the efficiency of dispensing.

[0052] Among them, Figure 3 In the process, a thick sealing layer 300 is formed by glue in the through hole 220 and the groove 210, and the outer end face of the sealing layer 300 is flush with the end face of the sealing part 130, so that the glue can seal the connection between the wire harness 600 and the conductive pin 121 (generally by welding), and prevent the connection between the wire harness 600 and the conductive pin 121 from being exposed to the outside, which can effectively prevent airtightness problems.

[0053] Specifically, the through hole 220 and the conductive pin 121 are fitted with a gap, which facilitates the filling of the gap between them with glue. The cured glue forms a sealing layer, and the adhesion between the glue-filled area and the through hole 220 is good, forming a physical isolation zone, completely cutting off the oil and gas permeation path, achieving sealing throughout the entire axial direction, improving the sealing effect, simplifying the process steps, reducing production and process costs, and also playing a good role in shock absorption.

[0054] The aforementioned adhesive (epoxy resin) can be either ENIENT EG0510B or ENIENT EG0510C, which possesses strong adhesion, temperature resistance, and moisture resistance, thus preventing leakage.

[0055] Multiple sealing structures are formed along the direction of the conductive pin 121. Even if grease or oil vapor in the cylinder seeps through one sealing structure, multiple subsequent sealing structures will block the seeping grease or oil vapor, thereby enhancing the sealing performance between the conductive pin 121 and the main body shell 100 and the sealing end plate 200, and solving the technical problem of poor airtightness of the cylinder connector in the prior art.

[0056] In this embodiment, the main body shell 100 is made of a high-temperature resistant and impact-resistant insulating material, such as PBT, PA66, PPS, etc., to adapt to the high temperature and vibration environment of the cylinder. A mounting ear 110 is provided on the outer side of the main body shell 100. The mounting hole of the mounting ear 110 is round, oblong, or other shapes to accommodate mounting screws, which facilitates use in different assembly scenarios. Considering the material of the main body shell 100, a metal fitting, such as a steel metal ring, is provided in the mounting hole to prevent the fastening screw from damaging the main body shell 100. The cylinder connector is connected to the cylinder by screws.

[0057] Among them, such as Figure 5 , Figure 6 and Figure 7 As shown, one end of the main body shell 100 is provided with a plug-in portion 120, which has a plurality of conductive pins 121 inside; the other end of the main body shell 100 is provided with a sealing portion 130, which faces the inside of the motor cylinder and forms a sealing cavity 131, and the conductive pins 121 extend into the sealing cavity 131; the sealing portion 130 is provided with four light-reducing holes 132, which are located at the upper middle part of the four corners of the sealing portion 130 respectively.

[0058] Furthermore, such as Figure 2 As shown, a sealing element 140 is provided in the middle of the main body shell 100. The sealing element 140 is located on the insertion part 120 and is used to seal both sides of the cylinder body after cylinder installation to prevent liquid and gas leakage.

[0059] Furthermore, the sealing element 140 is a sealing ring made of rubber or silicone, with a circular, rectangular or irregular cross-section, adapted to the sealing requirements after the main body shell 100 and the cylinder are installed. The sealing ring is interference-fitted with the main body shell 100 or installed by limiting the position through a slot or other structure to ensure that the sealing element 140 is stable and the sealing is reliable after installation.

[0060] In this embodiment, the conductive pins 121 are made of copper or copper alloy, and their surfaces are treated with anti-oxidation agents such as tin plating or silver plating to improve conductivity and corrosion resistance. The number of conductive pins 121 is 8-12, preferably 12, and they are arranged in a matrix or linear pattern within the connector 120 to ensure precise mating with the adapter plug. Two conductive pins 121 connect to the connector 500, and six of the remaining ten conductive pins 121 connect to the rotary transformer 400.

[0061] like Figure 9As shown, the cylinder block wiring harness assembly of this embodiment includes the aforementioned cylinder block connector and a wiring harness 600 connecting the rotary transformer 400 and the connector 500. The wiring harness 600 and the cylinder block connector are sealed together by a sealing layer 300. The aforementioned cylinder block wiring harness assembly is installed on the vehicle's cylinder block to ensure safe vehicle operation.

[0062] Example 2

[0063] To improve the sealing effect at the connection, in this embodiment, the conductive pin 121 is inserted into the through hole 220, and its end extends to the bottom of the groove 210, exceeding the bottom by 0.2-0.5mm, but not exceeding the top surface of the groove 210, so that the adhesive can cover the connection.

[0064] Example 3

[0065] To ensure vehicle stability during operation, in this embodiment, the main housing 100 is made of high-temperature and impact-resistant insulating material, such as PBT, PA66, and PPS, to adapt to the high-temperature and vibration environment of the cylinder. Two mounting ears 110 are provided on the outer side of the main housing 100, symmetrically arranged. The mounting holes of the two mounting ears 110 are round, oblong, or other shapes to accommodate mounting screws, facilitating use in different assembly scenarios. Considering the material of the main housing 100, metal fittings, such as steel metal rings, are provided in the mounting holes to prevent damage to the main housing 100 from the tightening screws. The cylinder connector is connected to the cylinder by screws, ensuring the firmness of the cylinder connector connection and thus the stability of the cylinder connector during operation within the vehicle.

[0066] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A cylinder connector, comprising a main body housing (100); one end of the main body housing (100) is provided with a plug portion (120), which has a plurality of conductive pins (121) inside; the other end of the main body housing (100) is provided with a sealing portion (130), the sealing portion (130) facing the inner side of the cylinder and forming a sealing cavity (131), the conductive pins (121) extending into the sealing cavity (131); characterized in that, Also includes: A sealing end plate (200) is placed in the sealing cavity (131). A groove (210) is provided above the sealing end plate (200). A through hole (220) is provided inside the sealing end plate (200) along the length center axis direction. The conductive pin (121) passes through the through hole (220) and at least part of its end extends to the bottom of the groove (210). And a sealing layer (300) made of adhesive filled in the through hole (220) and groove (210) so that the adhesive can seal the connection between the wire harness (600) and the conductive pin (121).

2. The cylinder connector according to claim 1, characterized in that, The through hole (220) and the conductive pin (121) are fitted together with a gap, so that the gap between them can be filled with a sealing layer (300) formed by glue.

3. The cylinder connector according to claim 2, characterized in that, The number of through holes (220) matches the number of conductive pins (121).

4. The cylinder connector according to any one of claims 1-3, characterized in that, A sealing element (140) is provided in the middle of the main body shell (100) to achieve sealing on both sides of the cylinder body after cylinder penetration installation.

5. The cylinder connector according to claim 4, characterized in that, The sealing part (130) is provided with at least one relief hole (132).

6. The cylinder connector according to claim 1, characterized in that, The conductive pins (121) are made of copper or copper alloy. There are 8-12 conductive pins (121) arranged in a matrix or linear regular pattern within the plug-in portion (120).

7. The cylinder connector according to claim 4, characterized in that, The sealing element (140) is a sealing ring made of rubber or silicone, with a circular, rectangular or irregular cross-section, and the sealing ring is interference-fitted with the main body shell (100).

8. The cylinder connector according to claim 1, characterized in that, The main body shell (100) is made of insulating material, and the mounting holes of the mounting ears (110) on it are circular.

9. A wiring harness assembly for a cylinder part, characterized in that, Includes the cylinder connector as described in any one of claims 1-8 and a wiring harness (600) for connecting the rotary transformer (400) and the connector (500), wherein the wiring harness (600) is sealed to the cylinder connector by a sealing layer.

10. A vehicle, characterized in that, Includes the cylinder block wiring harness assembly as described in claim 9, wherein the cylinder block wiring harness (600) assembly is mounted on the cylinder block of a vehicle.

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