Plug-in seal assembly and connector

Abstract

The utility model relates to the dustproof, waterproof technical field of connector, especially plug -in sealing assembly and connector. The utility model discloses the connector through the anti -drop of setting of preventing the inside of the side wall of plug -in port between the clamping wall of preventing the anti -drop of setting and the fixed assembly of realization, and this kind of clamping assembly's mode avoids the welding operation, will not damage surface quality, also does not influence other part's structure, can dismantle simultaneously to change when the elastic sealing ability of sealing rubber ring is invalid. In addition, the space of plug -in port inside is sufficient, and when clamping wall extends to plug -in port inside, the size and structural strength of clamping wall can be guaranteed, and further also can guarantee the clamping reliability between plug -in port.

Description

Technical Field

[0001] This utility model relates to the field of dustproof and waterproof technology of connectors, and in particular to mating sealing components and connectors. Background Technology

[0002] New energy vehicles use a large number of plug and socket connectors to achieve the conversion between circuits. Due to the complex operating conditions of vehicles, such as vibration, impact, rain, and water wading, the requirements for the reliability of the connection between plugs and sockets and the sealing of the mating are high.

[0003] A Chinese utility model patent application filed in 2024 with authorization announcement number CN222168790U discloses a sealing assembly and connector. To ensure the reliability of the mating seal at the connector's mating port, an anti-disengagement ring and a sealing rubber ring are fixedly connected into an integral structure, and the anti-disengagement ring is welded to the mating port to ensure that the integral structure formed by the anti-disengagement ring and the sealing rubber ring will not detach from the mating port during insertion and removal. However, because the plastic anti-disengagement ring and the mating port have relatively thin walls, it is impossible to set up standard welding fixtures when connecting them by laser welding or ultrasonic welding. Uncontrollable welding overflow is prone to occur at the welding position of the parts, resulting in poor surface quality of the parts. At the same time, welding can also easily damage other parts of the product. Utility Model Content

[0004] The purpose of this invention is to provide a mating sealing assembly to solve the problem that existing mating sealing assemblies involve welding connections to the mating ports of connectors, resulting in poor surface quality at the welding points. Simultaneously, the purpose of this invention is to provide a connector using the aforementioned mating sealing assembly to solve the same problem.

[0005] The mating sealing assembly of this utility model includes an anti-disengagement ring and a sealing ring that is fixedly connected to the ring body of the anti-disengagement ring to form an integral structure. In the axial direction, the sealing ring is located on one side of the anti-disengagement ring. The inner side of the inner flange at the end of the anti-disengagement ring is also integrally connected with a snap-fit ​​wall that extends axially toward the axial side where the sealing ring is located. A snap-fit ​​space is formed between the snap-fit ​​wall and the ring body, which allows the side wall of the mating port to enter when the mating sealing assembly is installed on the mating port. The snap-fit ​​wall is used to prevent disengagement and snap-fit ​​with the inner side of the side wall of the mating port.

[0006] Furthermore, the ring body includes two parallel short sidewalls and a long sidewall connecting the two ends of the two short sidewalls. The long sidewall is an outwardly convex arch to fit the outer surface of the corresponding sidewall of the mating port.

[0007] Furthermore, the snap-fit ​​wall is located in the middle of the length direction of the long sidewall, and when snapped onto the mating port, at least part of it is recessed into the snap-fit ​​wall clearance groove provided on the inner side surface of the mating port sidewall in the thickness direction.

[0008] Furthermore, the snap-fit ​​wall has two or more snap-fit ​​structures for preventing detachment from the inner surface of the mating port sidewall, and these structures are spaced apart in the circumferential direction of the ring body.

[0009] Furthermore, the snap-fit ​​structure provided on the snap-fit ​​wall is a snap-fit ​​that protrudes towards the inner side of the side wall of the mating port to engage with the snap-fit ​​groove provided on the inner side of the side wall of the mating port.

[0010] This invention improves upon existing mating sealing assemblies by integrally connecting a snap-fit ​​wall extending axially toward the sealing ring to the inner side of the inner flange at the end of the anti-disengagement ring. A snap-fit ​​space is formed between the snap-fit ​​wall and the ring body, allowing the side wall of the mating port to enter. This enables the anti-disengagement ring to be installed from the front of the mating port onto the mating port, and the assembly is secured by the anti-disengagement snap-fit ​​between the snap-fit ​​wall and the inner surface of the mating port's side wall. This snap-fit ​​assembly method avoids welding, does not damage surface quality, and does not affect the structure of other parts. It also allows for disassembly and replacement when the elastic sealing ability of the sealing ring fails. Furthermore, the ample space inside the mating port ensures the size and structural strength of the snap-fit ​​wall when it extends into the mating port, thus guaranteeing the reliability of the snap-fit ​​connection with the mating port.

[0011] The connector of this utility model includes a connector housing, one end of which has a mating port. A mating sealing assembly is fixedly installed at the mating port to achieve circumferential sealing with the adapter connector. The mating sealing assembly includes an anti-disengagement ring and a sealing ring fixedly connected to the ring body of the anti-disengagement ring to form an integral structure. In the axial direction, the sealing ring is located on one side of the anti-disengagement ring. The inner side of the inner flange at the end of the anti-disengagement ring is also integrally connected to a snap-fit ​​wall extending axially toward the axial side where the sealing ring is located. A snap-fit ​​space is formed between the snap-fit ​​wall and the ring body, allowing the side wall of the mating port to enter when the mating sealing assembly is installed on the mating port. The snap-fit ​​wall is used to prevent disengagement and snap-fit ​​with the inner side of the side wall of the mating port.

[0012] Furthermore, the mating port is rectangular and is surrounded by four port sidewalls, including two parallel short port sidewalls and a long port sidewall connecting the two ends of the short port sidewalls. The outer surface of the long port sidewall is an outwardly convex arc surface, making the long port sidewall thicker in the middle and thinner at both ends. The ring body includes two parallel short ring body sidewalls and a long ring body sidewall connecting the two ends of the short ring body sidewalls. The long ring body sidewall is an outwardly convex arch shape to fit the outer surface of the corresponding long port sidewall of the mating port.

[0013] Furthermore, a snap-fit ​​wall clearance groove is provided on the inner side surface of the long port sidewall. The snap-fit ​​wall is located in the middle of the length direction of the long ring sidewall, and when it is snapped onto the mating port, at least part of it sinks into the snap-fit ​​wall clearance groove provided on the inner side surface of the corresponding long port sidewall in the thickness direction.

[0014] Furthermore, there are two or more snap-fit ​​points between the snap-fit ​​wall and the side wall of the mating port, and they are arranged at intervals around the circumference of the mating port.

[0015] Furthermore, the snap-fit ​​structure provided on the snap-fit ​​wall is a buckle protruding towards the inner side of the side wall of the mating port, and the snap-fit ​​structure provided on the side wall of the mating port is a slot that opens inward.

[0016] This invention improves upon existing connectors by achieving a secure assembly through a snap-fit ​​connection between the snap-fit ​​wall on the anti-disengagement ring and the inner side of the mating port sidewall. This snap-fit ​​assembly method avoids welding, does not damage surface quality, and does not affect the structure of other parts. It also allows for disassembly and replacement when the elastic sealing ability of the sealing ring fails. Furthermore, the ample space inside the mating port ensures the size and structural strength of the snap-fit ​​wall when it extends into the mating port, thus guaranteeing the reliability of the snap-fit ​​connection with the mating port. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of the mating sealing assembly of this utility model; Figure 2 for Figure 1 An axial view of the mating seal assembly shown. Figure 3 This is a schematic diagram showing the structure of the mating sealing assembly and the mating port assembled together, according to one embodiment of the connector of this utility model. Figure 4 This is a schematic diagram showing the mating sealing assembly separated from the mating port in one embodiment of the connector of this utility model; Figure 5 for Figure 3 The diagram shows a quarter-section of the connector. Figure 6 for Figure 5 A cross-sectional view from the perspective of A.

[0018] In the diagram: 1. Anti-disengagement ring; 2. Sealing ring; 10. Short side wall of the ring body; 11. Long side wall of the ring body; 12. Snap-fit ​​wall; 13. Inner flange at the end of the ring body; 121. Snap-fit; 3. Connector housing; 30. Outer wall; 300. Sealing mating ring cavity; 302. Anti-disengagement slope; 31. Inner wall; 310. Snap-fit ​​wall clearance groove; 311. Snap-fit ​​groove. Detailed Implementation

[0019] This invention addresses the problem in existing connectors where the mating sealing assembly is fixed by welding an anti-disengagement ring to the side wall of the mating port, resulting in poor surface quality of the parts. By using a snap-fit ​​wall on the anti-disengagement ring to snap-fit ​​the inner side of the mating port side wall, the aforementioned problems caused by welding are avoided. At the same time, this detachable connection method also facilitates the maintenance and replacement of the mating sealing assembly.

[0020] The following describes various embodiments of the connector to illustrate this utility model.

[0021] like Figure 1-6 As shown, the connector is a through-hole connector, including a connector housing 3. The connector housing 3 is rectangular and has a rectangular mating cavity extending front and rear, with the front end facing the adapter connector and the rear end facing away from the adapter connector. The mating port of the connector is located at the front end. The connector housing 3 includes a main housing and an inner wall 31 and an outer wall 30 connected to the front end of the main housing. The inner wall 31 is used to set mating terminals for the adapter terminals of the adapter connector to be inserted and to achieve conductive connection. The inner wall 31 encloses the mating port. The mating port is rectangular and is surrounded by four port sidewalls (i.e., the four sidewalls of the inner wall 31), including two parallel short port sidewalls and a long port sidewall connecting the two ends of the two short port sidewalls. The outer wall 30 is outside the inner wall 31 and forms an annular space with the inner wall 31. This annular space constitutes a sealed mating annular cavity 300 into which the mating cavity wall of the adapter connector extends. A mating sealing assembly is fixedly installed on the mating port. The mating sealing assembly includes a sealing ring 2 located on the outer side of the inner wall 31. When the mating cavity wall of the adapter connector extends into the sealing mating ring cavity 300, it seals with the sealing ring 2 from the inside, thereby achieving mating and sealing of the two connectors.

[0022] The mating seal assembly includes an anti-disengagement ring 1 and a sealing ring 2, which are fixedly connected to form a single ring structure, with the anti-disengagement ring 1 positioned in front of the sealing ring 2 in the axial direction. For example... Figure 1-2As shown, the anti-disengagement ring 1 includes a ring body formed by four connected sidewalls. The four sidewalls include two relatively parallel and spaced short sidewalls 10 and long sidewalls 11 connected between the two ends of the two short sidewalls 10. The inner surface of the ring body is adapted to the shape and size of the outer surface of the inner wall 31, and the ring body can be fitted onto the outer side of the inner wall 31. The rear end face of the ring body is provided with a connecting groove, and the front end face of the sealing ring 2 is provided with a connecting outer edge. The connecting outer edge extends forward into the connecting groove and is connected by adhesive bonding. Alternatively, in other embodiments, the sealing ring 2 and the ring body are integrally embedded and molded. The outer surface of the sealing ring 2 is a wavy or serrated surface in the axial direction, and the outer surface protrudes outward from the outer surface of the ring body to maintain a compression seal with the insertion cavity wall of the mating connector. The inner contour of the sealing ring 2 is consistent with the inner contour of the ring body so that when the mating sealing assembly is installed on the mating port, the inner surface of the sealing ring 2 is tightly fitted with the outer surface of the inner wall 31.

[0023] An inner flange 13 extending inward from the side wall is provided at the axial front end of the ring body. When the insertion sealing assembly is fitted onto the side wall of the insertion port (i.e., the inner wall 31), the rear side of the inner flange 13 at the ring body end is in contact with the front end face of the inner wall 31.

[0024] An integrally connected snap-fit ​​wall 12 extending rearward (i.e., extending axially toward the sealing ring) is also provided on the inner side of the inner flange 13 at the end of the ring body. The snap-fit ​​wall 12 and the corresponding side wall of the ring body are spaced apart in the inward and outward directions to form a snap-fit ​​space between them. When the ring body and the sealing ring 2 are fitted onto the outer side of the inner enclosure wall 31, the snap-fit ​​wall 12 extends to the inner side of the inner enclosure wall 31 and engages with the inner side of the inner enclosure wall 31 to prevent detachment. In this way, the snap-fit ​​wall 12 enables the snap-fit ​​assembly between the entire mating sealing assembly and the side wall of the mating port, thus avoiding the problems caused by the welding connection between the mating sealing assembly and the mating port in the prior art.

[0025] In existing technologies, connectors typically have a thinner inner wall 31 to achieve miniaturization. Reliability of the snap-fit ​​can be ensured by increasing snap-fit ​​points between the snap-fit ​​wall 12 and the inner surface of the mating port. For example... Figure 1-5 As shown, the length direction of the snap-fit ​​wall 12 is consistent with the length direction of the side wall of the ring body. There are two or more snap-fit ​​points, which are spaced apart along the length direction of the snap-fit ​​wall 12. In this case, it is preferable to place the snap-fit ​​wall 12 on the inner side of the long side wall 11 of the ring body. As can be seen from the figure, there are two snap-fit ​​walls 12, each located on the inner side of the long side wall 11 of the ring body. Of course, it is not excluded that in other embodiments there is one snap-fit ​​wall 12 located on the inner side of the long side wall 11 of the ring body, or two snap-fit ​​walls 12 located on the inner sides of the two short side walls 10 of the ring body. When the length direction of the snap-fit ​​wall 12 is the front-back direction, the snap-fit ​​points can be arranged at intervals along the length direction of the snap-fit ​​wall 12.

[0026] In one embodiment of this utility model, the shapes of the inner wall 31 and the outer wall 30 can be the same as in the prior art, that is, both the inner and outer walls 30 are rectangular walls, and the ring body is a rectangular ring body. To reduce the inward deformation of the long side of the ring body during injection molding and to make the ring body dimensions easier to control, in a more preferred embodiment, the short side of the ring body is a straight side, and the long side of the ring body adopts an outwardly convex arch shape. Correspondingly, the outer surface of the long port sidewall is set as an outwardly convex arc shape, ensuring that the ring body can fit snugly against the outer surface of the inner wall 31 when fitted onto the outside of the inner wall 31. Based on this embodiment, better results can be achieved by combining it with other design methods. Specifically, when the outer surface of the long port sidewall is set as a convex arc, the long port sidewall forms a sidewall structure that is thick in the middle and thin at both ends. At this time, the snap-fit ​​wall 12 is positioned inside the long annular sidewall and at the middle of the long annular sidewall in the length direction. That is, when the mating sealing assembly is installed on the mating port, the snap-fit ​​wall 12 is located at the middle of the inner side of the long port sidewall. A snap-fit ​​wall clearance groove 310 is provided on the inner surface of the long port sidewall. When the mating sealing assembly is snapped onto the mating port, at least part of the snap-fit ​​wall 12 sinks into the corresponding snap-fit ​​wall clearance groove 310 provided on the inner surface of the long port sidewall in the thickness direction. This also minimizes the occupation of the internal space of the mating port. Because the long port sidewall forms a sidewall structure that is thick in the middle and thin at both ends, by controlling the length (i.e., the length of the snap-fit ​​wall 12) and thickness of the snap-fit ​​wall clearance groove 310, it can be ensured that the setting of the snap-fit ​​wall clearance groove 310 will not affect the structural strength of the long port sidewall.

[0027] In an embodiment where the depth of the latching wall clearance groove 310 is equal to the thickness of the latching wall 12, the inner side of the latching wall 12 can be kept flush with the inner side of the long port sidewall, and the inner side of the latching wall 12 can also be kept flush with the inner side of the inner flange of the ring port, ensuring smoother mating between the mating port and the adapter connector.

[0028] In such Figure 6 In the illustrated embodiment, the snap-fit ​​structure on the snap-fit ​​wall 12 is a buckle 121 protruding towards the inner side of the inner enclosure wall 31, and the snap-fit ​​structure on the inner side of the inner enclosure wall 31 is a slot 311 opening inward. As described above, when the long port sidewall forms a sidewall structure that is thick in the middle and thin at both ends, its structural strength is improved. Setting the slot 311 structure on it will not affect its structural strength, and setting the buckle 121 structure on the snap-fit ​​wall 12 will not reduce the structural strength of the snap-fit ​​wall 12. Compared to setting the buckle 121 on the inner side of the inner enclosure wall 31 and setting the slot 311 on the snap-fit ​​wall 12, the snap-fit ​​reliability is better. Moreover... Figure 6In the structure shown, to improve the anti-detachment and locking capability between the slot 311 and the buckle 121, the front wall of the slot 311 is higher than the rear wall. An anti-detachment ramp 302 protruding from the inner side of the inner wall 31 is formed on the front side of the slot 311 to increase the hooking area with the buckle 121. The front side of the anti-detachment ramp 302 is a slope, which facilitates the buckle 121 sliding from front to back and engaging in the slot 311, reducing locking resistance. Of course, in other embodiments, the positions of the slot 311 and the buckle 121 can be interchanged to achieve essentially the same function and effect.

[0029] The specific structure of the mating sealing assembly of this utility model is the same as that of the mating sealing assembly in the connector embodiment described above, and will not be repeated here.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A mating sealing assembly, comprising an anti-disengagement ring (1) and a sealing ring (2) fixedly connected to the anti-disengagement ring (1) and forming an integral structure, wherein the sealing ring (2) is located on one side of the anti-disengagement ring (1) in the axial direction, characterized in that, The inner side of the inner flange (13) at the end of the anti-disengagement ring (1) is also integrally connected with a snap-fit ​​wall (12) extending axially toward the axial side where the sealing ring (2) is located. The snap-fit ​​wall (12) and the ring form a snap-fit ​​space between them, which allows the side wall of the mating port to enter when the mating sealing assembly is installed on the mating port. The snap-fit ​​wall (12) is used to anti-disengage the inner side of the side wall of the mating port.

2. The mating sealing assembly according to claim 1, characterized in that, The ring body includes two parallel short sidewalls and a long sidewall connecting the two ends of the two short sidewalls. The long sidewall is an outwardly convex arch to fit the outer surface of the corresponding sidewall of the mating port.

3. The mating sealing assembly according to claim 2, characterized in that, The snap-fit ​​wall (12) is located in the middle of the length direction of the long sidewall and can sink at least part of the snap-fit ​​wall relief groove (310) provided on the inner side surface of the sidewall of the mating port in the thickness direction when snap-fitted onto the mating port.

4. The mating sealing assembly according to any one of claims 1-3, characterized in that, There are two or more snap-fit ​​structures provided on the snap-fit ​​wall (12) for preventing detachment from the inner side of the side wall of the mating port, and they are arranged at intervals in the circumferential direction of the ring body.

5. The mating sealing assembly according to any one of claims 1-3, characterized in that, The snap-fit ​​structure provided on the snap-fit ​​wall (12) is a snap-fit ​​(121) that protrudes toward the inner side of the side wall of the insertion port to engage with the snap-fit ​​groove (311) provided on the inner side of the side wall of the insertion port.

6. A connector, including a connector housing (3), one end of which has a mating port, and a mating sealing assembly is fixedly installed at the mating port to achieve circumferential sealing with the mating connector, the mating sealing assembly including an anti-disengagement ring (1) and a sealing ring (2) fixedly connected to the anti-disengagement ring (1) to form an integral structure, wherein the sealing ring (2) is located on one side of the anti-disengagement ring (1) in the axial direction, characterized in that, The inner side of the inner flange (13) at the end of the anti-disengagement ring (1) is also integrally connected with a snap-fit ​​wall (12) extending axially toward the axial side where the sealing ring (2) is located. The snap-fit ​​wall (12) and the ring form a snap-fit ​​space between them, which allows the side wall of the mating port to enter when the mating sealing assembly is installed on the mating port. The snap-fit ​​wall (12) is used to anti-disengage the inner side of the side wall of the mating port.

7. The connector according to claim 6, characterized in that, The mating port is rectangular and is surrounded by four port sidewalls, including two parallel short port sidewalls and a long port sidewall connecting the two ends of the short port sidewalls. The outer surface of the long port sidewall is a convex arc surface, making the long port sidewall thicker in the middle and thinner at both ends. The ring body includes two parallel short ring body sidewalls and a long ring body sidewall connecting the two ends of the short ring body sidewalls. The long ring body sidewall is an outwardly convex arch to fit the outer surface of the corresponding long port sidewall of the mating port.

8. The connector according to claim 7, characterized in that, A snap-fit ​​wall clearance groove (310) is provided on the inner side of the long port sidewall. The snap-fit ​​wall (12) is located in the middle of the length direction of the long ring sidewall and can sink into the snap-fit ​​wall clearance groove (310) provided on the inner side of the corresponding long port sidewall in the thickness direction when it is snapped onto the mating port.

9. The connector according to any one of claims 6-8, characterized in that, There are two or more snap points between the snap-fit ​​wall (12) and the side wall of the mating port, and they are arranged at intervals around the circumference of the mating port.

10. The connector according to any one of claims 6-8, characterized in that, The snap-fit ​​structure provided on the snap-fit ​​wall (12) is a snap buckle (121) protruding towards the inner side of the side wall of the insertion port, and the snap-fit ​​structure provided on the side wall of the insertion port is a snap groove (311) opening inward.

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