An insert terminal overmolded connector

Abstract

The present invention discloses an insert terminal encapsulation type connector, which includes a housing, a rubber core arranged inside the housing, and an insert terminal in the shape of a sheet that penetrates through the rubber core from front to back. The rear end of the insert terminal protrudes from the rubber core and the housing, and the front end of the insert terminal protrudes from the rubber core and forms an insertion interface with the housing; the rubber core is injection molded, and the insert terminal becomes integrated with the rubber core during the injection molding process of the rubber core. The present invention adopts a sheet-shaped insert terminal, which can effectively reduce the processing cost and improve the production efficiency, enhance the product stability, and also has the characteristics of simple structure, convenient assembly, and safety and reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and particularly to an insert terminal encapsulation type connector. Background Art

[0002] The existing electrical connectors have a complex overall structure, and are inconvenient for assembly and disassembly. Generally, they are composed of a plastic housing, a turned terminal, an external axial sealing ring, an internal group sealing ring, a plastic stopper, and a wire harness. Among them, the plastic housing and the turned terminal constitute the main part of the electrical connector. The turned terminal is used to achieve the function of electrical connection. The external axial sealing ring realizes the sealing between the electrical connector and the outside world. The internal group sealing ring plays a role in sealing the electrical connector itself, and the plastic stopper plays a role in restricting the position of the terminal.

[0003] In the existing electrical connectors, turned terminals are mainly used as the main components for electrical connection. Usually, the turned terminals are difficult to process and the processing cost is very high, which indirectly limits the functions and application ranges of the electrical connectors.

[0004] With the continuous maturity of the electric vehicle industry, the overcurrent requirements for the terminal connection components of this type of vehicle are also getting higher and higher. The previous terminal structure was complex and produced by machining processes, and it has gradually been unable to meet the requirements for excessive current. Moreover, the machining process is complicated and costly; and the overall structure of the connector is complex. Summary of the Invention

[0005] In view of the above-mentioned existing technical defects, the present invention provides an insert terminal encapsulation type connector. The use of sheet-shaped insert terminals can effectively reduce the processing cost and improve the production efficiency, and can enhance the product stability. It also has the characteristics of simple structure, convenient assembly, safety and reliability.

[0006] To solve the above technical problems, the present invention provides an insert terminal encapsulation type connector, which includes a housing, a rubber core disposed in the housing, and an insert terminal in a sheet shape that penetrates through the rubber core from front to back. The rear end of the insert terminal protrudes from the rubber core and the housing, and the front end of the insert terminal protrudes from the rubber core and forms an insertion port with the housing; the rubber core is injection molded, and the insert terminal becomes integrated with the rubber core during the injection molding process of the rubber core.

[0007] Further, the housing is provided with a through hole, and the two orifices of the through hole are arranged at 90 degrees. The rubber core is disposed at the rear end of the through hole; the insert terminal is a bent structure at 90 degrees, and both ends of the insert terminal extend toward the two orifices of the through hole respectively.

[0008] Furthermore, the insert terminal includes a flat portion, a vertical portion disposed below the flat portion, and a 90-degree bending portion for connecting the flat portion and the vertical portion; one end of the 90-degree bending portion is connected to the rear side surface of the flat portion, and the other end is connected to the top end of the vertical portion.

[0009] Furthermore, the front end of the flat portion protrudes from the rubber core and is placed inside the insertion port, and an anti-touch cap is snap-fitted to the front end of the flat portion.

[0010] Furthermore, a T-shaped engaging portion is provided in the middle of the front end of the flat portion, and a bayonet engaging with the engaging portion is provided on the anti-touch cap.

[0011] Furthermore, the insert terminal rubber-coated connector further includes a fixing block snap-fitted inside the insertion port, a notch is provided at one end of the rubber core facing the insertion port, and the inner end of the fixing block is inserted into the notch.

[0012] Furthermore, elastic pieces that are turned outwards are provided at both the upper and lower ends of the fixing block, and a stop step for cooperating with the elastic pieces is provided on the inner side of the housing.

[0013] Furthermore, one end of the rubber core opposite to the notch is stepped, and a cavity is formed between the stepped portion and the housing.

[0014] Furthermore, waterproof rings are provided on the end faces of the housing located at the two orifices.

[0015] Furthermore, at least two fixing columns that extend forward and are mushroom-shaped are provided on the waterproof ring, and through holes for the fixing columns to pass through and engage are provided on the housing.

[0016] The present invention has the following beneficial effects:

[0017] The present invention uses a flaky insert terminal as a connecting member, and the flaky insert terminal can be manufactured by a stamping process, effectively reducing the processing cost and improving the production efficiency, and the insert terminal can meet the demand for excessive current; the insert terminal and the rubber core are combined into one by a plastic injection molding process with encapsulation, which can reduce the number of parts inside the connector for fixing the insert terminal, reduce the cost, and enhance the stability of the product; the rubber core is fixed in the shell only through the fixing block, without other additional fixing parts or engaging structures, and the overall structure is simple and convenient for assembly; the insert terminal has a continuous bending design of 90 degrees, which can strengthen the bonding force between the insert terminal and the rubber core, improve the reliability of the product, and effectively save space; fixing posts are provided on the waterproof ring to avoid the problems of the waterproof ring falling off and deflecting, improve the potential safety hazard caused by unsealing due to the falling off or deflection during use, and reduce the workload of repeatedly assembling the waterproof ring; a T-shaped engaging part is provided at the front end of the insert terminal to fix the anti-touch cap and prevent the anti-touch cap from falling off during use and causing a safety hazard; there is also a cavity formed between the rubber core and the shell to form a shielding space design, enabling the rubber core to elastically deform within a certain range, and thus facilitating the installation of the rubber core into the shell by utilizing the characteristics of elastic deformation.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, which will become apparent from the following description, or can be understood through the practice of the present invention. Brief Description of the Drawings

[0019] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and do not constitute an improper limitation to the present invention. In the drawings:

[0020] Figure 1 is a schematic diagram of an insert terminal encapsulation type connector in an embodiment;

[0021] Figure 2 is a bottom view of an insert terminal encapsulation type connector in an embodiment;

[0022] Figure 3 is a cross-sectional view of an insert terminal encapsulation type connector in an embodiment;

[0023] Figure 4 is an exploded schematic diagram of an insert terminal encapsulation type connector in an embodiment;

[0024] Figure 5 is a schematic diagram of an insert terminal in an embodiment;

[0025] Figure 6 is a schematic diagram of a waterproof ring in an embodiment;

[0026] Figure 7 is a schematic diagram after an insert terminal encapsulation type connector in an embodiment is plugged into an external plug housing. Detailed implementation mode

[0027] In order to more fully understand the technical content of the present invention, the present invention will be further introduced and described below in conjunction with the accompanying drawings and specific embodiments; it should be noted that the descriptions such as "first" and "second" in this article are used to distinguish different components, etc., do not represent the order, nor limit that "first" and "second" are of different types.

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present invention.

[0029] Embodiment

[0030] As Figures 1 to 7 shown, a plug-in terminal encapsulation connector shown in this embodiment includes a housing 1, a rubber core 2 disposed in the housing 1, and a plug-in terminal 3 having a sheet shape and passing through the rubber core 2 from front to back; the rear end of the plug-in terminal 3 protrudes from the rubber core 2 and the housing 1 for connecting with an external cable, and the front end of the plug-in terminal 3 protrudes from the rubber core 2 and forms a plug-in interface 4 with the housing 1 for plugging with a matching plug housing (as Figure 7 shown); the rubber core 2 is made by injection molding, and the plug-in terminal 3 becomes integrated with the rubber core 2 during the injection molding process of the rubber core 2, that is, the two are combined into one by the encapsulation process; in the above structure, by using a sheet-shaped plug-in terminal as a connecting piece, and the sheet-shaped plug-in terminal can be made by stamping process, the processing cost is effectively reduced and the production efficiency is improved, and the plug-in terminal can meet the demand for excessive current; the plug-in terminal and the rubber core are combined into one by the encapsulation injection molding process, which can reduce the number of parts for fixing the plug-in terminal inside the connector, and can reduce the cost and enhance the stability of the product.

[0031] In this embodiment, a through hole 11 is provided on the housing 1, and the two orifices of the through hole 11 are arranged at 90 degrees. The rubber core 2 is disposed at the rear end of the through hole 11 by interference fit, and the end face of the rubber core is flush with the orifice at the rear end of the through hole; the plug-in terminal 3 is a bent structure that fits with the through hole and is at 90 degrees, and both ends of the plug-in terminal 3 extend towards the two orifices of the through hole 11 respectively.

[0032] Specifically, the insertion terminal 3 includes a flat portion 31, a vertical portion 32 disposed below the flat portion 31, and a 90-degree bending portion 33 for connecting the flat portion 31 and the vertical portion 32. One end of the 90-degree bending portion 33 is connected to the rear side surface of the flat portion 31, and the other end is connected to the top end of the vertical portion 32, making the overall design a continuous 90-degree bending; through the 90-degree bending portion, the vertical portion is disposed directly below the flat portion. Thus, after the insertion terminal is combined with the rubber core, the lower end of the vertical portion extends out from the middle of the end of the rubber core, improving the overall aesthetics. Moreover, the entire 90-degree bending portion is within the rubber core and combined with the rubber core, which can increase the bonding area between the insertion terminal and the rubber core and form a firm bonding structure, effectively improving the bonding force between the two, further enhancing the stability and reliability of the product. And when the bonding force meets the requirements, the volume required for the bonding between the rubber core and the insertion terminal can be reduced, thereby effectively saving space.

[0033] In this embodiment, the front end of the flat portion 31 protrudes from the rubber core 2 and is placed inside the insertion interface 4. A touch-preventing cap 5 is snap-fitted to the front end of the flat portion 31 to avoid electric shock caused by touching the insertion terminal; specifically, a T-shaped snap-fitting portion 311 is provided in the middle of the front end of the flat portion 31, and a bayonet (not shown in the figure) for snap-fitting with the snap-fitting portion 311 is provided on the touch-preventing cap 5. The T-shaped snap-fitting portion is used to effectively fix the touch-preventing cap and prevent the touch-preventing cap from falling off during use, causing potential safety hazards.

[0034] The insertion terminal rubber-coated connector further includes a fixing block 6 snap-fitted inside the insertion interface 4. One end of the rubber core 2 facing the insertion interface 4 is provided with a notch 21, and the inner end of the fixing block 6 is inserted into the notch 21; when the rubber core is installed in the shell from the other orifice of the through hole, by inserting the fixing block into the notch, the rubber core is defined and fixed. The overall structure is simple and convenient for assembly, without the need for other additional fixing parts or snap-fitting structures.

[0035] Specifically, elastic pieces 61 that are turned outwards are symmetrically provided at the upper and lower ends of the fixing block 6. A stop step 12 that cooperates with the elastic pieces 61 is provided on the inner side of the shell 1, and sliding grooves 211 for the elastic pieces 61 to slide are provided at both the upper and lower ends of the notch.

[0036] In this embodiment, the end of the rubber core 2 opposite to the notch 21 is in a stepped shape 22, and a cavity 23 is formed between the stepped shape 22 and the shell 1; in practice, when the combined component after combining the rubber core and the insertion terminal is installed in the shell, since the front end of the insertion terminal extends forward to the insertion interface, and the rear end of the rubber core is disposed at the orifice of the rear end of the through hole by an interference fit method, there is no installation gap between the two. Thus, it is not easy to assemble the rear end of the rubber core to the orifice. At this time, the cavity is used to form a void design between the shell and the rubber core, enabling the rubber core at the outer end of the cavity to elastically deform within a certain range. Then, by using the characteristic of its elastic deformation, it is convenient to install the rubber core in the shell.

[0037] In this embodiment, on the end faces of the housing 1 located at the two orifices, there are waterproof rings 7 arranged around the orifices. On both sides of the waterproof ring 7, there are at least one fixing post 71 extending forward and protruding from its end face and shaped like a mushroom. The housing 1 is provided with through holes 13 for the fixing posts 71 to pass through and form a snap fit, and the waterproof ring is snap-fixed to the housing by the fixing posts, avoiding the problems of the waterproof ring falling off and deflecting, improving the potential safety hazard caused by unsealing due to the falling off or deflection during use, and reducing the workload of repeatedly assembling the waterproof ring; specifically, the fixing posts 71 at both ends are symmetrically arranged to ensure the uniform stress on both sides of the waterproof ring.

[0038] The specific assembly process of the connector in the above embodiment is as follows:

[0039] (1) After stamping the insert terminal into shape, it is placed into a mold, and then a plastic core is injection-molded outside the insert terminal to form a plastic core terminal assembly;

[0040] (2) The plastic core terminal assembly is inserted into the housing from the rear end of the through hole;

[0041] (3) Then the fixing block is inserted into the housing from the front end of the through hole, and the inner end of the fixing block is inserted into the recess of the plastic core;

[0042] (4) Finally, two waterproof rings are installed at the corresponding positions on the two end faces of the housing to complete the assembly.

[0043] The technical solutions provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to helping understand the principles of the embodiments of the present invention; at the same time, for those of ordinary skill in the art, based on the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An insertion terminal encapsulation connector, characterized in that, it includes a housing, a rubber core disposed within the housing, and an insertion terminal in the shape of a sheet that penetrates through the rubber core from front to back. The rear end of the insertion terminal protrudes from the rubber core and the housing, and the front end of the insertion terminal protrudes from the rubber core and forms an insertion interface with the housing; the rubber core is injection molded, and the insertion terminal becomes integrated with the rubber core during the injection molding process of the rubber core; the housing is provided with a through hole, and the two orifices of the through hole are arranged at 90 degrees. The rubber core is disposed at the rear end of the through hole; the insertion terminal is a 90-degree bending structure, and both ends of the insertion terminal extend respectively towards the two orifices of the through hole; the insertion terminal includes a straight portion, a vertical portion disposed below the straight portion, and a 90-degree bending portion for connecting the straight portion and the vertical portion; one end of the 90-degree bending portion is connected to the rear side surface of the straight portion, and the other end is connected to the top end of the vertical portion.

2. The insertion terminal encapsulation connector according to claim 1, characterized in that, the front end of the straight portion protrudes from the rubber core and is placed within the insertion interface, and an anti-touch cap is snap-fitted to the front end of the straight portion.

3. The insertion terminal encapsulation connector according to claim 2, characterized in that, a T-shaped snap-fitting portion is provided in the middle of the front end of the straight portion, and a bayonet for snap-fitting with the snap-fitting portion is provided on the anti-touch cap.

4. The insertion terminal encapsulation connector according to claim 3, characterized in that, it further includes a fixing block snap-fitted within the insertion interface. One end of the rubber core facing the insertion interface is provided with a notch, and the inner end of the fixing block is inserted into the notch.

5. The insertion terminal encapsulation connector according to claim 4, characterized in that, elastic pieces that are turned outwards are provided at both the upper and lower ends of the fixing block, and a stop step for cooperating with the elastic pieces is provided on the inner side of the housing.

6. The insertion terminal encapsulation connector according to claim 5, characterized in that, one end of the rubber core opposite to the notch is in a stepped shape, and a cavity is formed between this stepped shape and the housing.

7. The insertion terminal encapsulation connector according to any one of claims 2-6, characterized in that, a waterproof ring is provided on the end faces of the housing located at the two orifices.

8. The insertion terminal encapsulation connector according to claim 7, characterized in that, at least two fixing columns that extend forward and are in the shape of mushrooms are provided on the waterproof ring, and through holes for the fixing columns to pass through and be snap-fitted are provided on the housing.

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