Oil-proof connector

Abstract

The utility model relates to an oil-proof connector, which comprises a connector shell, an insulator, a front cover plate, a copper bar and a rubber ring, one end of the connector, which is mounted with equipment, is defined as a front end, one end of a cable is defined as a tail end, the tail part of the insulator is fixed with the connector shell, one end of the copper bar is positioned in the insulator and is connected with a lead of the cable, and the other end of the copper bar is connected with the rubber ring. The other end is arranged outside the connector and is connected with equipment; the rubber ring is assembled in the insulator and located between the insulator and the copper bar, and the front cover plate is assembled on the front portion of the insulator and limits and fixes the rubber ring. The oil-proof connector provided by the utility model can be integrally installed in the connector, only the copper bar connecting end is exposed outside the connector and is connected with equipment, other parts are sealed in the connector, and the connector has higher oil stain protection capability. Meanwhile, the assembly process is simplified, the manufacturing cost is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to an oil-proof connector. Background Art

[0002] With the development of the economy, energy and environmental protection issues have become increasingly prominent, and countries around the world have gradually turned their attention to environmentally friendly and energy-saving electric vehicles. With the development of new energy vehicles, customers have put forward higher requirements for the oil pollution protection performance of on-board high-voltage connectors. According to existing technologies and product status, connectors used in high-voltage equipment such as boost modules or all-in-one devices mostly consider the sealing between the casing and the equipment, while insufficient consideration is given to oil pollution protection measures between the wires and the casing, resulting in low oil pollution protection performance of the connectors, which cannot meet customer use requirements. In addition, the copper busbar and wire connection position of the existing connector is exposed, and it relies more on the internal protection status of the equipment itself, and cannot effectively avoid adverse conditions caused by the use environment. Therefore, its own anti-oil pollution protection ability is weak. Figure 1 Therefore, it is necessary to propose a connector with certain oil resistance and strong protection performance in combination with the needs of the entire vehicle. Summary of the invention

[0003] The purpose of the utility model is to provide an oil-proof connector. After the connector is connected to the equipment, only the copper busbar connection end is exposed inside the equipment and connected to the equipment, and the remaining parts are sealed inside the connector, so that the connector has a higher oil pollution protection ability. At the same time, the utility model simplifies the assembly process, reduces manufacturing costs, and improves assembly efficiency.

[0004] The utility model is specifically implemented through the following technical scheme. An oil-proof connector proposed by the utility model includes a connector housing, an insulator, a front cover, a copper busbar, and a rubber ring. The end where the connector is installed with the equipment is defined as the "front", and the end where the cable is located is defined as the "tail". The tail of the insulator is fixed to the connector housing, one end of the copper busbar is located in the insulator and connected to the wire of the cable, and the other end is located outside the connector for connection with the equipment; the rubber ring is assembled in the insulator and located between the insulator and the copper busbar, and the front cover is assembled at the front of the insulator to limit and fix the rubber ring.

[0005] The utility model uses the above oil-proof connector to ensure that the connection between the copper busbar and the cable conductor is located inside the insulator, and the connection between the copper busbar and the equipment is located outside the connector. The rubber ring can be limited and fixed while the front cover is installed. The rubber ring can form a seal between the copper busbar and the insulator, so that the connection between the copper busbar and the conductor located inside the insulator is protected from contamination, thereby improving the oil-proof performance of the connector.

[0006] The aforementioned oil-proof connector also includes a square rubber pad, which is arranged on the square shell at the front end of the connector housing. The square rubber pad can provide sealing protection between the insulator and the connector housing and between the connector housing and the device, thereby improving the anti-oil performance of the connector.

[0007] Furthermore, a guide column is arranged on the back of the square plate rubber pad, and a guide hole is correspondingly arranged on the square plate shell. The square plate rubber pad and the square plate shell are assembled together through the guidance of the guide column and the guide hole.

[0008] Furthermore, a large diameter section is provided at the front end of the guide column, and the large diameter section is set with a gradually changing diameter. The maximum diameter of the large diameter section is slightly larger than the guide hole diameter. After the guide column passes through the guide hole on the square plate shell, the large diameter section cooperates with the guide hole to prevent the square plate rubber pad from falling off.

[0009] The aforementioned oil-proof connector also includes a wire sealing body and a tail cover. The wire sealing body is assembled in the rear of the connector housing and is located between the connector housing and the cable. The tail cover is connected to the rear of the connector housing and limits the position of the wire sealing body. The wire sealing body can seal the cable and the connector housing to protect the internal wires.

[0010] The aforementioned oil-proof connector is further equipped with an inner crimping sleeve and a shielding crimping sleeve outside the cable. The inner crimping sleeve is sleeved outside the cable, and the shielding wire on the cable is turned outward and wrapped around the outside of the inner crimping sleeve. The shielding crimping sleeve is arranged outside the inner crimping sleeve and crimps the shielding wire.

[0011] In the aforementioned oil-proof connector, the insulator, the front cover plate and the connector housing are all fixed by means of a snap structure; the front cover plate and the copper busbar are fixed by means of a snap, a pin or an insert.

[0012] Furthermore, the front cover plate includes a front cover plate shell and two inner side walls connected to the front cover plate shell, a buckle I is provided on the inner side wall, a fixing hole I is provided on the copper busbar, and the buckle I is snapped into the fixing hole I to achieve assembly and fixation of the copper busbar and the front cover plate; an elastic part I is provided on the front cover plate shell, and a fixing hole II is provided on the elastic part I, a buckle II is provided on the front part of the insulator, and the buckle II is snapped into the fixing hole II to achieve assembly and fixation of the front cover plate and the insulator.

[0013] Furthermore, the positions of the buckle II and the fixing hole II can be interchanged.

[0014] In the aforementioned oil-proof connector, the tail of the insulator is provided with an elastic part II, a fixing hole III is provided on the elastic part II, and a buckle III is provided on the inner wall of the connector shell, and the buckle III is snapped into the fixing hole III to realize the assembly and fixation of the insulator and the connector shell.

[0015] Furthermore, the positions of the buckle III and the fixing hole III can be interchanged.

[0016] When the aforementioned oil-proof connector is installed on the equipment, the copper busbar, the front cover plate and the front part of the insulator directly pass through the mounting holes on the equipment and enter the equipment. The mounting hole set on the front part of the copper busbar is fixedly connected to the internal interface of the equipment by screws. The connector housing is located outside the equipment and is fastened to the equipment by screws.

[0017] Compared with the prior art, the utility model has obvious advantages and beneficial effects. By means of the above technical solution, the utility model can achieve considerable technical progress and practicality, and has a wide range of utilization value, and has at least the following advantages:

[0018] (1) The oil-proof connector of the utility model has only the copper busbar connection end exposed outside the connector and connected to the internal interface of the device, and the rest of the parts are sealed inside the connector, so the connector has a higher oil and dirt protection capability. After the copper busbar is connected to the cable conductor, it can be directly inserted into the insulator from the rear of the connector and fixed and locked with the front cover through a snap-on structure, thus realizing the integrated installation of the copper busbar and the cable. After the front cover is installed, the rubber ring can be fixed, and after the rear cover and the connector housing are installed, the sealing body can be fixed. Therefore, the utility model simplifies the assembly process, reduces manufacturing costs, and improves assembly efficiency.

[0019] (2) The copper busbar and the insulator of the oil-proof connector of the utility model are sealed with a rubber ring to prevent oil from entering the connection between the copper busbar and the wire inside the insulator from the front of the connector. The connector housing and the insulator, as well as the device and the connector, are sealed with a square rubber pad to prevent oil from entering the interior of the connector. The cable and the connector housing are sealed with a wire seal to prevent oil from entering the connector from the rear of the connector. The above structure achieves full sealing of the connector from front to back, improves the connector's oil protection performance, and makes the overall look neater and more beautiful.

[0020] (3) The oil-proof connector of the utility model can be installed in an integrated manner with the equipment. The copper busbar, the front cover plate and the front part of the insulator can directly pass through the installation holes on the equipment to enter the equipment. The installation hole on the front part of the copper busbar and the internal interface of the equipment are fastened with screws to realize the conduction between the internal interface of the equipment and the internal wires of the connector. The square plate shell and the square plate rubber pad are fastened with screws to the equipment to complete the installation and fixation of the connector and the equipment. The whole assembly process is simple and easy to operate, and the assembly efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The invention is a connector without a sealing structure between the copper busbar and the connector housing in the prior art.

[0022] Figure 2 It is a schematic diagram of the oil-proof connector of the utility model.

[0023] Figure 3 It is an exploded view of the oil-proof connector of the utility model.

[0024] Figure 4 It is a cross-sectional view of the oil-proof connector of the utility model.

[0025] Figure 5 The utility model is a schematic diagram of the structure of the front cover plate of the oil-proof connector.

[0026] Figure 6 It is a schematic diagram of the installation of the oil-proof connector and equipment of the utility model.

[0027]

Components and symbols

[0028] 1-connector housing 5-copper busbar

[0029] 2-square rubber pad 6-rubber ring

[0030] 3-Insulator 7-Cable

[0031] 4-Front cover 8-Inner crimping sleeve

[0032] 9-Shielded crimping sleeve 21-Fixed hole IV

[0033] 10-gasket 22-shielding wire

[0034] 11-sealing body 23-square plate shell

[0035] 12-tail cover 24-guide column

[0036] 13- Buckle I 25- Equipment

[0037] 14-Fixing hole Ⅰ 26-Mounting hole

[0038] 15-Fix hole II 27-Screw

[0039] 16- Buckle Ⅱ 28- Elastic part Ⅰ

[0040] 17-Step 29-Elastic Part Ⅱ

[0041] 18-Fix hole Ⅲ 30-Elastic part Ⅲ

[0042] 19- Buckle III 31- Large diameter section

[0043] 20- Buckle Ⅳ DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with specific embodiments and drawings. Obviously, the described features are only part of the embodiments of the utility model, not all embodiments. Therefore, the following detailed description of the utility model provided in the drawings is not intended to limit the scope of protection claimed, but merely represents the selected embodiments of the utility model. Based on the embodiments described below of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0045] In the following description, the "front" refers to the end where the connector is installed on the device, and the "tail" refers to the end where the cable is located.

[0046] like Figure 2 As shown, an oil-proof connector provided by the utility model includes a connector housing 1, a square rubber pad 2, an insulator 3, a front cover 4, a copper busbar 5, a rubber ring 6, a cable 7, an inner crimping sleeve 8, a shielding crimping sleeve 9, a gasket 10, a sealing body 11, a tail cover 12, etc.

[0047] like Figure 3 As shown, the front cover is assembled on the front of the insulator and fixed to the insulator by a snap-on structure, and the tail of the insulator is fixed to the connector housing by a snap-on structure. After the tail of the copper busbar is connected to the cable conductor, they are installed into the insulator from the tail of the connector, and the copper busbar and the front cover are fixed by a snap-on structure, a pin or an insert. One end of the copper busbar is located in the insulator and connected to the cable conductor, and the other end is located outside the connector for connection with the equipment; the rubber ring 6 is assembled in the insulator and located between the insulator and the copper busbar. The rubber ring can be limited and fixed while the front cover is installed. The rubber ring can form a seal between the copper busbar and the insulator, so that the connection between the copper busbar and the conductor in the insulator is protected from contamination, thereby improving the oil-proof performance inside the connector.

[0048] In one embodiment, the copper busbar and the cable conductor are welded by ultrasonic welding, but the present invention is not limited thereto.

[0049] The cross-sectional view of the front cover is as follows: Figure 4As shown, it includes a front cover plate shell 4.1 and two inner side walls 4.2 corresponding to each other. The front cover plate shell is connected to the inner side wall, and a buckle Ⅰ13 is provided on the inner side wall, and a fixing hole Ⅰ14 is provided on the copper bar. At the same time, an elastic member 28Ⅰ is provided on the front cover plate shell, and a fixing hole Ⅱ15 is provided on the elastic member Ⅰ, and a buckle Ⅱ16 is provided on the outer wall of the front part of the insulator. When the front cover plate is assembled with the insulator, the buckle Ⅱ is inserted into the fixing hole Ⅱ to complete the assembly. After the copper bar is installed in the connector, the buckle Ⅰ is inserted into the fixing hole Ⅰ to realize the assembly and fixation of the copper bar and the front cover plate. After the front cover plate is assembled, the rubber ring 6 can be limited and fixed. A step 17 is provided in the insulator. The rubber ring is installed in the insulator, and one end of the rubber ring is limited by the step 17 and the other end is limited by the front cover plate.

[0050] The elastic member I can be arranged on the upper and lower sides of the front cover shell, in which case the buckle II is arranged on the outer wall of the upper and lower sides of the front part of the insulator. The elastic member I can also be arranged on the left and right sides of the front cover shell, in which case the buckle II is arranged on the outer wall of the left and right sides of the front part of the insulator.

[0051] Furthermore, an elastic member II 29 is provided at the tail of the insulator, a fixing hole III 18 is provided on the elastic member II, and a buckle III 19 is provided on the inner wall of the connector housing. When the insulator and the connector housing are assembled, the buckle III is snapped into the fixing hole III to complete the assembly. The elastic member II can be arranged on the upper and lower sides of the tail of the insulator, and in this case, the buckle III is arranged on the inner wall of the upper and lower sides of the connector housing. The elastic member II can also be arranged on the left and right sides of the tail of the insulator, and in this case, the buckle III is arranged on the inner wall of the left and right sides of the connector housing.

[0052] The rear end of the connector housing is also equipped with a tail cover, and the rear end of the tail cover radially shrinks and wraps the cable. The connector housing and the tail cover are also assembled through a snap-on fixing structure. Specifically, an elastic member III30 is provided on the tail cover, a fixing hole IV21 is provided on the elastic member III, and a snap-on IV20 is provided at the rear end of the connector housing. When the tail cover and the connector housing are assembled, the snap-on IV is inserted into the fixing hole IV to complete the assembly.

[0053] An inner crimping sleeve 8 and a shielding crimping sleeve 9 are also provided outside the cable. The inner crimping sleeve is sleeved outside the cable. The shielding wire 22 on the cable is turned outward and wrapped on the outside of the inner crimping sleeve. The shielding crimping sleeve is arranged outside the inner crimping sleeve and crimps the shielding wire. The tail of the inner crimping sleeve is located at the tail of the insulator. A wire sealing body 11 is also provided between the cable and the connector housing. The cable and the connector housing are sealed by the wire sealing body to protect the internal wires. Specifically, a groove is provided on the inner wall of the rear part of the connector housing, and the wire sealing body is installed in the groove. A gasket 10 is also installed in the groove. The gasket is arranged at the front end of the wire sealing body to provide fixed support for the wire sealing body. After the tail cover and the connector housing are assembled, the wire sealing body is fixed in the rear part of the connector housing.

[0054] In other embodiments, the buckle II and the fixing hole II can be interchanged, similarly, the buckle III and the fixing hole III can be interchanged, and the buckle IV and the fixing hole IV can be interchanged.

[0055] The front end of the connector housing is a square disc housing 23, a square disc rubber pad 2 is provided at the front end of the square disc housing, a guide column 24 is provided on the back of the square disc rubber pad, and a guide hole is provided on the square disc housing accordingly. The square disc rubber pad and the square disc housing are assembled together through the guide column and the guide hole. The material of the guide column is the same as that of the square disc rubber pad, and a large diameter section 31 is provided at the front end of the guide column. The large diameter section is a gradually changing diameter setting, and the maximum diameter of the large diameter section is slightly larger than the guide hole diameter. After the guide column passes through the guide hole on the square disc housing, it cooperates with the guide hole through the large diameter section to prevent the square disc rubber pad from falling off.

[0056] When assembling the above oil-proof connectors, the front cover, insulator, rubber ring, and connector housing can be pre-assembled. After the copper busbar is connected to the cable, it can be directly inserted into the insulator from the rear of the connector and fixed and locked with the front cover through a snap-on structure. After the tail cover and the connector housing are installed, the sealing body can be fixed. This solution realizes the integrated installation of the copper busbar and the cable. The copper busbar and the insulator are sealed with a rubber ring to protect the connection between the copper busbar and the wire in the insulator from contamination. The connector housing and the insulator, as well as the equipment and the connector are sealed with a square rubber pad, and the cable and the connector housing are sealed with a sealing body. The above structure realizes the full sealing of the connector from front to back, improving the oil pollution protection performance of the connector.

[0057] The schematic diagram of the oil-proof connector after assembly is as follows: Figure 5 As shown, the schematic diagram of its installation with the device 25 is as shown Figure 6 As shown, the copper busbar, the front cover plate and the front part of the insulator directly pass through the mounting holes on the device and enter the device. The front part of the copper busbar is provided with a mounting hole 26 for fixing the internal interface of the device with screws 27 to achieve the conduction between the internal interface of the device and the internal wire of the connector. Screw holes are provided on the square plate housing and the square plate rubber pad, so that the connector and the device are fastened and installed by screws.

[0058] In the oil-proof connector of the utility model, only the copper busbar connection end is exposed outside the connector and connected to the equipment, and the rest of the parts are sealed inside the connector. The copper busbar and the insulator are sealed with a rubber ring to prevent oil from entering the connection between the copper busbar and the wire inside the insulator. The connector housing and the insulator, as well as the equipment and the connector, are sealed with a square rubber pad to prevent oil from entering the connector. A wire sealing body is provided at the tail of the insulator, and the cable and the connector housing are sealed with the wire sealing body to prevent oil from entering the connector. The above structure realizes all-round sealing of the connector from front to back, improves the oil protection performance of the connector, and makes the overall structure neater and more beautiful, and easier to assemble.

[0059] The above is only an embodiment of the utility model, and does not limit the utility model in any form. The utility model can also have other forms of embodiments according to the above structure and function, which are not listed one by one. Therefore, any simple modification, equivalent change and modification made by any technician familiar with the profession to the above embodiment according to the technical essence of the utility model without departing from the scope of the technical solution of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. An oil-proof connector, characterized in that The invention comprises a connector housing (1), an insulator (3), a front cover (4), a copper busbar (5), and a rubber ring (6), wherein the end where the connector is installed with the device is defined as the "front", and the end where the cable is located is defined as the "tail", the tail of the insulator is fixed to the connector housing, one end of the copper busbar is located in the insulator and connected to the wire of the cable, and the other end is located outside the connector for connection with the device; the rubber ring is assembled in the insulator and is located between the insulator and the copper busbar, and the front cover is assembled at the front of the insulator and limits the position of the rubber ring.

2. The oil-proof connector according to claim 1, characterized in that A step (17) is arranged in the insulator, one end of the rubber ring is limited by the step (17), and the other end is limited by the front cover plate.

3. The oil-proof connector according to claim 1, characterized in that It also includes a square disc rubber pad, which is arranged on the square disc shell body at the front end of the connector shell.

4. The oil-proof connector according to claim 3, characterized in that A guide column (24) is arranged on the back of the square plate rubber pad, and a guide hole is correspondingly arranged on the square plate shell. The square plate rubber pad and the square plate shell are assembled together through the guidance of the guide column and the guide hole.

5. The oil-proof connector according to claim 1, characterized in that It also includes a wire sealing body and a tail cover. The wire sealing body is assembled in the rear part of the connector housing and is located between the connector housing and the cable. The tail cover is connected to the rear part of the connector housing and limits and fixes the wire sealing body.

6. The oil-proof connector according to claim 1 or 5, characterized in that An inner crimping sleeve and a shielding crimping sleeve are also installed outside the cable. The inner crimping sleeve is sleeved outside the cable, and the shielding crimping sleeve is sleeved outside the inner crimping sleeve.

7. The oil-proof connector according to claim 1, characterized in that The insulator is fixed to the front cover plate and the connector housing by means of a snap-fit ​​structure; the front cover plate is fixed to the copper busbar by means of a snap-fit, a pin shaft or an insert.

8. The oil-proof connector according to claim 1 or 7, characterized in that The front cover comprises a front cover shell (4.1) and two inner side walls (4.2) connected to the front cover shell, a buckle I (13) is provided on the inner side wall, a fixing hole I (14) is provided on the copper bar, and the buckle I is snapped into the fixing hole I to realize the assembly and fixation of the copper bar and the front cover; an elastic part I is provided on the front cover shell, and a fixing hole II (15) is provided on the elastic part I, and a buckle II (16) is provided on the front part of the insulator, and the buckle II is snapped into the fixing hole II to realize the assembly and fixation of the front cover and the insulator.

9. The oil-proof connector according to claim 8, characterized in that The positions of buckle II and fixing hole II are interchanged.

10. The oil-proof connector according to claim 1 or 7, characterized in that An elastic part II is arranged at the tail of the insulator, a fixing hole III (18) is arranged on the elastic part II, a buckle III (19) is arranged on the inner wall of the connector shell, and the buckle III is inserted into the fixing hole III to realize the assembly and fixation of the insulator and the connector shell.

11. The oil-proof connector according to claim 10, characterized in that The buckle III and the fixing hole III are interchanged.

12. The oil-proof connector according to claim 1, characterized in that When the oil-proof connector is installed on a device, the copper bar passes through the device installation hole and is fastened to the internal interface of the device, and the connector housing is located outside the device and is fastened to the device by screws.

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