Socket and connector comprising same

Abstract

The socket comprises a plugging terminal and a socket housing provided with a plugging cavity, and also comprises an injection molding member, the injection molding member is connected to one end of the socket housing and extends into the socket housing, and the plugging terminal is connected with the socket housing. The plugging terminal is fixed in the injection molding part and extends into the plugging cavity; a first sealing ring is installed at the position, located on the connecting end face of the injection molding part and the inserting terminal, in the injection molding part, and one end face of the first sealing ring abuts against the end face of the injection molding part and the end face of the inserting terminal at the same time. And a second sealing ring is also arranged at the external connection part of the injection molding part and the socket shell. The requirement for the sealing ring is not high, and a better sealing effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of connectors, in particular to a socket and a connector comprising the socket. Background Art

[0002] A connector generally refers to an electrical connector, which is a device that connects two active devices. It is used to bridge the gap between blocked or isolated circuits in a circuit, so that current can flow and the circuit can achieve its intended function. In the field of new energy vehicles, new energy vehicles need to rely on batteries for power supply, so connectors are needed to connect the battery cells to increase energy storage.

[0003] Connectors include plugs and sockets. For new energy vehicles, the waterproof effect of connectors is of great importance, especially in rainy weather or when the vehicle passes through deep water. The waterproof effect of connectors is even related to the life of new energy vehicles and even the personal safety of drivers and passengers; especially the waterproof effect of sockets. Since the socket is installed on the battery unit, if the socket is not waterproof, water will directly enter the battery unit and cause direct damage to the battery unit. Therefore, the waterproof effect of the socket is crucial.

[0004] At present, for the sockets on the market, for detachable plug-in terminals and injection molded parts, sealing and waterproofing structures such as sealing rings are generally used at the connection gaps where there is a risk of water ingress to achieve waterproofing. For example, the sealing ring is set between the side wall of the injection molded part and the outer wall of the plug-in terminal for side sealing. For this side sealing method, since the sealing ring is set between the side wall of the injection molded part and the outer wall of the plug-in terminal for side sealing, it is necessary to reserve a pre-compression amount for the sealing ring to ensure the waterproof sealing effect. If the sealing ring is too large, it will cause assembly difficulties, while if the sealing ring is too small, it will result in poor sealing effect or even no sealing effect. Therefore, the side sealing has very high requirements on the size of the sealing ring. For the plug-in terminals and injection molded parts that are integrally injection molded, the metal material of the plug-in terminal and the plastic material of the injection molded part will shrink after injection molding and curing, and a gap will exist between the two due to curing shrinkage, which is also easy to get water in, and the waterproof effect is poor. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a socket, which has low requirements for the sealing ring and can achieve a better sealing effect. In addition, the utility model also provides a connector including the socket.

[0006] The technical solution of the utility model is achieved in this way:

[0007] The utility model provides a socket, comprising a plug-in terminal and a socket shell provided with a plug-in cavity, and also comprising an injection molded part, wherein the injection molded part is connected to one end of the socket shell and extends into the socket shell, and the plug-in terminal is fixed in the injection molded part and extends into the plug-in cavity; a first sealing ring is installed in the injection molded part at the connecting end surface between the injection molded part and the plug-in terminal, and one end surface of the first sealing ring abuts against the end surfaces of the injection molded part and the plug-in terminal at the same time; a second sealing ring is also installed at the external connection between the injection molded part and the socket shell.

[0008] In a preferred embodiment, the plug-in terminal includes a clamping portion and a plug-in portion connected to each other, the clamping portion is fixed in the injection molded part, and the plug-in portion extends into the plug-in cavity; a first step is provided at the end of the clamping portion in the injection molded part, and the end face of the clamping portion is flush with the end face of the first step to form the connecting end face.

[0009] In a preferred embodiment, a first limiting groove is provided on the outside of the plug-in part. When the first sealing ring is installed in the first limiting groove, one end face of the first sealing ring abuts against the end end face of the clamping part and the first step end face, and the first sealing ring has an interference fit with the first limiting groove and the inner wall of the injection molded part.

[0010] In a preferred embodiment, the external connection points between the injection molded part and the socket housing are respectively recessed to form a second limiting groove, and the second sealing ring is installed in the second limiting groove.

[0011] In a preferred embodiment, a first convex ring for limiting the plug-in terminal is provided inside the injection molded part, a first fixing groove is provided outside the plug-in terminal, and the first convex ring is arranged in the first fixing groove to fix the plug-in terminal in the injection molded part.

[0012] In a preferred embodiment, a second convex ring is provided on the inner wall of the socket housing near one end of the injection molded part, a second fixing groove corresponding to the second convex ring is provided on the outer side of the embedded end of the injection molded part, and the second convex ring is installed in the second fixing groove.

[0013] In a preferred embodiment, an extension connection portion is provided at one end of the socket housing close to the injection molded part, and a snap-in groove corresponding to the extension connection portion is provided at one end of the injection molded part close to the socket housing, and the extension connection portion can be snap-connected with the snap-in groove.

[0014] In a preferred embodiment, the outer side wall of the injection molded part extending into one end of the socket housing forms a limiting groove with the inner wall of the socket housing.

[0015] In a preferred embodiment, a retaining plate is provided outside the socket housing, and a sealing gasket is provided on a side of the retaining plate close to the injection molded part.

[0016] In addition, the utility model also provides a connector, comprising a plug and the above-mentioned socket, wherein the plug can be plug-connected with the socket.

[0017] Compared with the prior art, the utility model has the following advantages: the socket provided by the utility model fixes the plug-in terminal in the plug-in cavity of the socket shell by means of an injection molded part, and in addition to arranging a second sealing ring at the external connection between the injection molded part and the socket shell, a first sealing ring is also installed in the injection molded part at the connecting end face between the injection molded part and the plug-in terminal, wherein one end face of the first sealing ring abuts against the end faces of the injection molded part and the plug-in terminal at the same time, so that the first sealing ring performs a planar seal between the injection molded part and the plug-in terminal at the end faces of the injection molded part and the plug-in terminal; compared with the existing side sealing sealing method, the planar sealing method of the utility model only requires the end face of the sealing ring to abut against the end faces of the injection molded part and the plug-in terminal, so the size requirements for the sealing ring are not high; and the utility model only needs to limit the sealing ring at the connecting end face of the injection molded part and the plug-in terminal, and the assembly is simple. The utility model socket adopts a plane sealing method in which the first sealing ring is arranged at the end face of the injection molded part and the plug-in terminal. Since the end face of the first sealing ring abuts against the end face of the injection molded part and the plug-in terminal at the same time, the gap between the injection molded part and the plug-in terminal can be better closed, thereby achieving a better sealing effect. The waterproof level of the utility model socket can reach IP68 waterproof level. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 This is a schematic diagram of the structure of the socket of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the socket of the utility model;

[0021] Figure 3 This is a schematic diagram of the exploded structure of the socket of the utility model;

[0022] Figure 4 It is a structural schematic diagram of an injection molded part;

[0023] Figure 5 It is a schematic diagram of the structure of the socket housing;

[0024] Figure 6 It is a schematic diagram of the assembly relationship between the socket and the battery unit housing of the utility model;

[0025] Figure 7 It is a structural schematic diagram of the connector of the utility model.

[0026] Figure identification: 100 socket; 1 plug-in terminal; 101 clamping part; 1011 first fixing groove; 1012 notch; 102 plug-in part; 1021 first limiting groove; 1022 clamping groove; 2 socket housing; 201 plug-in cavity; 202 second convex ring; 203 extended connecting part; 2031 clamping strip; 204 limiting groove; 205 clamping plate; 206 reinforcement structure; 3 injection molded part; 301 first step; 302 second limiting groove; 303 first convex ring; 304 second fixing groove; 305 clamping groove; 3051 clamping; 4 first sealing ring; 5 second sealing ring; 6 sealing gasket; 7 insulating end cover; 701 clamping strip; 200 plug. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See also Figures 1 to 5 The utility model embodiment discloses a socket 100, including a plug-in terminal 1 and a socket housing 2 provided with a plug-in cavity 201, and also includes an injection molded part 3, the injection molded part 3 is connected to one end of the socket housing 2 and extends into the socket housing 2, the plug-in terminal 1 is fixed in the injection molded part 3 and extends into the plug-in cavity 201; a first sealing ring 4 is installed in the injection molded part 3 at the connecting end surface of the injection molded part 3 and the plug-in terminal 1, and one end surface of the first sealing ring 4 abuts against the end surfaces of the injection molded part 3 and the plug-in terminal 1 at the same time; a second sealing ring 5 is also installed at the external connection between the injection molded part 3 and the socket housing 2.

[0031] In the embodiment of the utility model, the second sealing ring 5 is used at the external connection between the injection molded part 3 and the socket housing 2; and the first sealing ring 4 is used for sealing at the connection end face of the injection molded part 3 and the plug terminal 1 inside the injection molded part 3, wherein one end face of the first sealing ring 4 simultaneously abuts the end faces of the injection molded part 3 and the plug terminal 1, so that the first sealing ring 4 performs a planar seal between the injection molded part 3 and the plug terminal 1 at the end faces of the injection molded part 3 and the plug terminal 1. This embodiment adopts a planar sealing sealing method, which only needs to ensure that the end face of the sealing ring can abut the end faces of the injection molded part 3 and the plug terminal 1, so the size requirements for the sealing ring are not high; and it only needs to ensure that the sealing ring is limited at the connection end face of the injection molded part 3 and the plug terminal 1, and the assembly is also relatively simple.

[0032] Among them, the injection molded part 3 and the plug-in terminal 1 are integrally injection molded. In this embodiment, when the injection molded part 3 and the plug-in terminal 1 are integrally molded, the socket 100 adopts a planar sealing method in which the first sealing ring 4 is set at the end faces of the injection molded part 3 and the plug-in terminal 1 in the injection molded part 3. Since the end face of the first sealing ring 4 simultaneously abuts against the end faces of the injection molded part 3 and the plug-in terminal 1 in the injection molded part 3, the gap left between the injection molded part 3 and the plug-in terminal 1 after curing can be better sealed. Compared with the existing side sealing method, the waterproof level of the socket 100 of the utility model can reach IP68 waterproof level, and the sealing effect is better.

[0033] Specifically, Figure 3As shown, the plug-in terminal 1 includes a connected clamping portion 101 and a plug-in portion 102, wherein the clamping portion 101 is fixed in the injection molded part 3, and the plug-in portion 102 extends into the plug-in cavity 201; a first step 301 is provided at the end of the clamping portion 101 in the injection molded part 3, and the end face of the clamping portion 101 is flush with the end face of the first step 301 and forms the connection end face. In this embodiment, by providing the first step 301 at the end of the clamping portion 101 in the injection molded part 3, the end face of the first step 301 (i.e., the plane where the first step 301 is located) forms a planar continuous connection end face with the end face of the clamping portion 101, at which time, one end face of the first sealing ring 4 can better abut the end face of the first step 301 and the end face of the clamping portion 101, thereby well sealing the gap between the plug-in terminal 1 and the injection molded part 3 after injection and curing.

[0034] Further, such as Figure 2 Figure 4 As shown, the plug-in portion 102 is provided with a first limiting groove 1021. When the first sealing ring 4 is installed in the first limiting groove 1021, one end face of the first sealing ring 4 abuts against the end face of the clamping portion 101 and the end face of the first step 301, and the first sealing ring 4 is interference-fitted with the first limiting groove 1021 and the inner wall of the injection molded part 3. In this embodiment, on the basis that one side face of the first sealing ring 4 abuts against the end face of the first step 301 and the end face of the clamping portion 101 at the same time, the first sealing ring 4 is arranged in the first limiting groove 1021, and the first sealing ring 4 is interference-fitted with the first limiting groove 1021 and the inner wall of the injection molded part 3, so that the first sealing ring 4 can be fastened at the connection end face of the injection molded part 3 and the plug-in terminal 1 without being easily moved, thereby greatly improving the waterproof sealing effect of the socket 100 of this embodiment. The socket 100 in this embodiment has a waterproof rating of IP68, as the first sealing ring 4 can seal the gap between the injection molded part 3 and the plug-in terminal 1 to ensure a waterproof sealing effect. Even if it is immersed in water with a depth of about 1 meter for a long time, it can prevent water from entering.

[0035] The external connection between the injection molded part 3 and the socket housing 2 is respectively concave to form a second limiting groove 302, and the second sealing ring 5 is installed in the second limiting groove 302 to seal the external gap between the injection molded part 3 and the socket housing 2 through the second sealing ring 5, and further prevent water from entering the battery cell from between the battery cell housing and the injection molded part 3, so as to ensure the sealing effect of the socket 100. The assembly relationship between the socket 100 and the battery cell housing is as shown in FIG. Figure 6 shown.

[0036] Further, such as Figure 5As shown, the socket housing 2 is provided with a retaining plate 205, wherein a sealing gasket 6 is provided on the side of the retaining plate 205 close to the injection molded part 3. In this embodiment, the socket 100 is fixed to the housing of the battery unit by the retaining plate 205. Since both the socket housing 2 and the battery unit are generally made of metal, a sealing gasket 6 needs to be provided between the two for sealing and waterproofing. Figure 6 As shown, under the double sealing of the sealing gasket 6 and the second sealing ring 5 , water can be effectively prevented from entering the battery cell through the gap between the battery cell housing and the socket housing 2 .

[0037] The retaining plate 205 in this embodiment fixes the socket 100 to the housing of the battery unit by means of bolts. Of course, other methods may also be used, and the present invention is not limited thereto.

[0038] In a preferred embodiment, Figure 4 As shown, a first convex ring 303 for limiting the position of the plug-in terminal 1 is provided inside the injection molded part 3, a first fixing groove 1011 is provided outside the clamping portion 101 of the plug-in terminal 1, and the first convex ring 303 is provided in the first fixing groove 1011 to fix the plug-in terminal 1 in the injection molded part 3. In this embodiment, by providing the first convex ring 303, the plug-in terminal 1 can be always limited and fixed in the injection molded part 3.

[0039] Further, such as Figure 3 As shown, a plurality of notches 1012 are provided outside the clamping portion 101, so that when the injection molded part 3 is injection molded on the plug-in terminal 1, the plug-in terminal 1 can be limited; this prevents the plug-in terminal 1 from rotating relative to the injection molded part 3 when the injection molded part 3 and the plug-in terminal 1 become loose due to aging during long-term use, thereby affecting the service life of the socket 100.

[0040] In one embodiment, if Figure 2-Figure 5 As shown, the inner wall of the socket housing 2 near one end of the injection molded part 3 is provided with a second convex ring 201, and the outer side of the embedded end of the injection molded part 3 is provided with a second fixing groove 304 corresponding to the second convex ring 201, and the second convex ring 201 is installed in the second fixing groove 304. In this embodiment, the second convex ring 201 is provided in the socket housing 2 to limit and fix the injection molded part 3 on the socket housing 2. Of course, the second fixing groove 304 can also be provided outside the socket housing 2, and the second convex ring 201 can be provided at the embedded end of the injection molded part 3, and the utility model is not limited here.

[0041] Among them, Figure 3 As shown, the second protruding ring 201 is an incomplete circular ring to prevent the injection molded part 3 and the socket housing 2 from rotating relative to each other.

[0042] Further, such as Figure 2 , Figure 4 and Figure 5 As shown, the end of the socket housing 2 close to the injection molded part 3 is provided with an extension connection part 203, and the end of the injection molded part 3 close to the socket housing 2 is provided with a clamping groove 305 corresponding to the extension connection part 203, and the extension connection part 203 can be clamped and connected with the clamping groove 305 to better limit and fix the socket housing 2. Preferably, a corresponding clamping strip 2031 can be provided on the extension connection part 203, and a clamping position 3051 corresponding to the clamping strip 2031 is provided in the clamping groove 305, and when the extension connection part 203 is clamped and connected with the clamping groove 305, the clamping strip 2031 is just located in the clamping position 3051, which can better fix and limit the injection molded part 3 and prevent the injection molded part 3 and the socket housing 2 from rotating relative to each other.

[0043] In this embodiment, Figure 2 As shown, the outer wall of the injection molded part 3 extending into one end of the socket housing 2 forms a limiting groove 204 with the inner wall of the socket housing 2, so that when the plug 200 is inserted into the socket 100, the insertion part of the plug 200 can be limited.

[0044] Preferably, Figure 2 As shown, an insulating end cover 7 is provided at the end of the plug terminal 1 to prevent electric shock injuries to people when accidentally touched. A clamping groove 1022 is provided at the end of the plug terminal 1, and a clamping strip 701 is provided on the insulating end cover 7. The insulating end cover 7 is fixed to the end of the plug terminal 1 through the matching connection between the clamping groove 1022 and the clamping strip 701.

[0045] In addition, a plurality of reinforcing structures 206 may be disposed outside the socket housing 2 to enhance the strength of the socket housing 2 .

[0046] See also Figure 7 The embodiment of the utility model further provides a connector, including a plug 200 and the socket 100 provided in the above embodiment, wherein the plug 200 can be plug-connected with the socket 100.

[0047] In summary, the utility model fixes the plug-in terminal 1 in the plug-in cavity 201 of the socket housing 2 through the injection molding 3. In addition to setting the second sealing ring 5 at the external connection between the injection molding 3 and the socket housing 2, a first sealing ring 4 is also installed in the injection molding 3 at the connection end face between the injection molding 3 and the plug-in terminal 1, wherein one end face of the first sealing ring 4 simultaneously abuts the end faces of the injection molding 3 and the plug-in terminal 1, so that the first sealing ring 4 performs a planar seal between the injection molding 3 and the plug-in terminal 1 at the end faces of the injection molding 3 and the plug-in terminal 1; compared with the existing side sealing sealing method, the planar sealing method of the utility model only requires the end face of the sealing ring to abut the end faces of the injection molding 3 and the plug-in terminal 1, so the size requirements of the sealing ring are not high; and the utility model only needs to limit the sealing ring at the connection end face of the injection molding 3 and the plug-in terminal 1, which is simple to assemble. The socket 100 of the utility model adopts a plane sealing method in which the first sealing ring 4 is arranged at the end surface of the injection molded part 3 and the plug terminal 1. Since the end surface of the first sealing ring 4 abuts against the end surface of the injection molded part 3 and the plug terminal 1, the gap between the injection molded part 3 and the plug terminal 1 can be better closed, thereby achieving a better sealing effect. The waterproof level of the socket of the utility model can reach IP68 waterproof level.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A socket, comprising a plug-in terminal and a socket housing provided with a plug-in cavity, characterized in that: It also includes an injection molded part, which is connected to one end of the socket shell and extends into the socket shell, and the plug-in terminal is fixed in the injection molded part and extends into the plug-in cavity; a first sealing ring is installed in the injection molded part at the connecting end surface between the injection molded part and the plug-in terminal, and one end surface of the first sealing ring abuts against the end surfaces of the injection molded part and the plug-in terminal at the same time; a second sealing ring is also installed at the external connection between the injection molded part and the socket shell.

2. The socket according to claim 1, characterized in that: The plug-in terminal includes a clamping portion and a plug-in portion connected to each other, the clamping portion is fixed in the injection molded part, and the plug-in portion extends into the plug-in cavity; a first step is provided at the end of the clamping portion in the injection molded part, and the end face of the clamping portion is flush with the end face of the first step and forms the connecting end face.

3. The socket according to claim 2, characterized in that: A first limiting groove is provided outside the plug-in portion. When the first sealing ring is installed in the first limiting groove, one end face of the first sealing ring abuts against the end face of the clamping portion and the first step end face, and the first sealing ring is interference fit with the first limiting groove and the inner wall of the injection molded part.

4. The socket according to claim 1, characterized in that: The external connection points between the injection molded part and the socket housing are respectively concave to form a second limiting groove, and the second sealing ring is installed in the second limiting groove.

5. The socket according to claim 1, characterized in that: A first convex ring for limiting the plug-in terminal is provided inside the injection molded part, a first fixing groove is provided outside the plug-in terminal, and the first convex ring is arranged in the first fixing groove to fix the plug-in terminal in the injection molded part.

6. The socket according to claim 1, characterized in that: A second convex ring is provided on the inner wall of the socket housing near one end of the injection molded part, a second fixing groove corresponding to the second convex ring is provided on the outer side of the embedded end of the injection molded part, and the second convex ring is installed in the second fixing groove.

7. The socket according to claim 1, characterized in that: An extension connection portion is provided at one end of the socket housing close to the injection molded part, and a clamping groove corresponding to the extension connection portion is provided at one end of the injection molded part close to the socket housing, and the extension connection portion can be clamped and connected with the clamping groove.

8. The socket according to claim 1, characterized in that: The outer side wall of the injection molded part extending into one end of the socket housing forms a limiting groove with the inner wall of the socket housing.

9. The socket according to claim 1, characterized in that: A retaining plate is arranged outside the socket housing, and a sealing gasket is arranged on one side of the retaining plate close to the injection molded part.

10. A connector, characterized in that: It comprises a plug and a socket as claimed in any one of claims 1 to 8, wherein the plug can be plug-connected with the socket.

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