Sealing structure of object pressing injection molding connector

Abstract

The utility model discloses a pressing object injection molding connector sealing structure, which comprises connector terminals and a shell, a plurality of connector terminals are arranged in the shell in an array mode, each connector terminal comprises a fixed part, the fixed part is arranged in the middle of the connector terminal in the length direction, and a groove is arranged outside the fixed part. A closed annular groove is formed in the fixing part of the connector terminal of the structure. According to the connector, the binding force between the coating in the annular groove and the terminal is large, and the coating in the annular groove is not influenced by an injection molding material when the shell is subjected to injection molding, so that the coating in the annular groove does not shift, the sealing combination between the connector terminal and the shell can be ensured, and the sealing performance of the connector is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of automobile insurance boxes and relates to a compression object injection molding connector sealing structure. BACKGROUND

[0002] In the prior art, oil-resistant cylinder penetrating parts (for example, terminals of a connector) are mainly realized by insert injection molding and then glue pouring to meet the oil seal requirement. However, the glue pouring sealing process is relatively complex, needs glue dispensing, vacuum pumping and bubble removing, long time heat curing and the like, and has high process equipment cost and long single product production cycle. In order to overcome the defects of glue pouring sealing, a technical scheme of realizing sealing combination between a shell and a terminal by using a coating pre-coated on the terminal is proposed in the prior art. However, in actual application, the coating pre-coated on the terminal will be displaced during injection molding of the shell, so that reliable sealing combination between the terminal and the shell cannot be realized, and oil leakage occurs.

[0003] In the existing condition, coating displacement refers to that the coating on the terminal will be moved under the scouring of flowing injection molding material during injection molding of the plastic shell, for example, from a position needing sealing on the terminal to a position not needing sealing. This will result in that reliable sealing combination between the terminal and the shell cannot be realized, and leakage still exists. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above problems, the utility model provides a compression object injection molding connector sealing structure.

[0005] The utility model solves its technical problem by adopting the following technical scheme:

[0006] A compression object injection molding connector sealing structure, characterized in that it comprises a connector terminal and a shell, a plurality of connector terminals are arranged in an array manner in the shell, the connector terminal comprises a fixed part, the fixed part is arranged at the middle part of the connector terminal in the length direction, a coating is coated on the fixed part, a groove is arranged outside the fixed part, and the shell is injection molded to connect and fix the fixed part.

[0007] Moreover, the shell has a peripheral wall surrounding an inner cavity and a partition wall separating the inner cavity into a first cavity and a second cavity, the connector terminal penetrates through the partition wall of the shell, and the fixed part of the connector terminal is embedded in the partition wall of the shell.

[0008] Moreover, a plurality of annular grooves surrounding the fixed part in the width direction are arranged outside the fixed part.

[0009] Furthermore, the fixing part includes a first fixing part and a second fixing part that are continuously arranged. A plurality of first oblique teeth are formed on the two sides of the first fixing part, and the plurality of first oblique teeth are arranged in a row in the length direction and form an annular groove with the first side tooth groove of the connector terminal. The middle part of the terminal is composed of a plurality of serrated annular grooves. A plurality of second oblique teeth are formed on the two sides of the second fixing part, and the plurality of second oblique teeth are arranged in a row in the length direction and form an annular groove with the first side tooth groove of the connector terminal. The middle part of the terminal is composed of a plurality of serrated annular grooves. The first oblique teeth and the second oblique teeth have opposite inclination directions.

[0010] Furthermore, the connector terminal is a one-piece stamped part, with a serrated groove stamped in the fixing part.

[0011] Moreover, the housing is an injection molded part, and the housing is fixed to the connector terminal by injection molding.

[0012] The advantages and positive effects of this utility model are:

[0013] A closed annular groove is formed on the fixing part of the connector terminal in this structure. The coating in the annular groove has a large bonding force with the terminal, and the coating in the annular groove is not affected by the injection molding material during the injection molding of the housing. Therefore, the coating in the annular groove will not shift, which can ensure the sealing connection between the connector terminal and the housing and improve the sealing performance of the connector. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A perspective view of a connector terminal according to an exemplary embodiment of the present invention is shown;

[0016] Figure 2 show Figure 1 A partially enlarged schematic diagram of the connector terminals shown;

[0017] Figure 3 This diagram shows a three-dimensional structural schematic of a connector terminal according to an embodiment of the present invention.

[0018] Figure 4 Showing a front view of an injection-molded connector according to an exemplary embodiment of the present invention;

[0019] Figure 5 showFigure 4 A sectional view along the AA direction.

[0020] The markings in the diagram indicate: 1. Connector terminal; 11. First fixing part; 110. First helical tooth; 12. Second fixing part; 120. Second helical tooth; 13. Second end; 14. First end; 2. Housing; 201. Second chamber; 202. First chamber; Detailed Implementation

[0021] To make the structure and advantages of this utility model clearer, the structure of this utility model will be further described below with reference to the accompanying drawings.

[0022] In this embodiment, the vertical direction, horizontal direction, front end, and rear end are all relative position descriptions and do not limit the actual orientation of the product.

[0023] A sealing structure for a compression-molded connector, in the illustrated embodiment, the connector includes connector terminals and a housing, see attached figure. Figure 1 As shown, it includes multiple connector terminals 1, which are arranged in an array within the housing 2. For example, in Figure 1 In this connector, there are 4 connector terminals 1, which are arranged in parallel at intervals.

[0024] The housing 2 has a peripheral wall that forms an inner cavity and a partition wall that divides the inner cavity into a first chamber 202 and a second chamber 201. The housing 2 is an injection molded part and is fixed to the connector terminal 1 by injection molding. The aforementioned connector terminal 1 is disposed in the housing 2, the connector terminal 1 passes through the partition wall of the housing 2, and the fixing part of the connector terminal 1 is embedded and fixed to the partition wall of the housing 2.

[0025] The connector terminal 1 has a first end 14 and a second end 13 opposite each other in its length direction, two opposite sides in its width direction, and two opposite surfaces in its thickness direction; the middle part of the connector terminal 1 is a fixing part, which is used to connect to the housing 2. See Appendix Figure 2 As shown, the fixing part includes a first fixing part 11 and a second fixing part 12. Multiple first helical teeth 110 are formed on each of the two sides of the first fixing part 11. These multiple first helical teeth 110 are arranged in a row along the length direction and form an annular groove with the first side tooth groove of the connector terminal 1. The middle part of the terminal is composed of multiple serrated annular grooves. Multiple second helical teeth 120 are formed on each of the two sides of the second fixing part 12. These multiple second helical teeth 120 are arranged in a row along the length direction and form an annular groove with the first side tooth groove of the connector terminal 1. The middle part of the terminal is composed of multiple serrated annular grooves. The inclination directions of the first helical teeth 110 and the second helical teeth 120 are opposite.

[0026] In the illustrated embodiment, the first end 14 of the connector terminal 1 is located in the first chamber 202 of the housing 2 for mating with a first mating terminal (not shown) of a first mating connector (not shown) inserted into the first chamber 202. The second end 13 of the connector terminal 1 is located in the second chamber 201 of the housing 2 for mating with a second mating terminal (not shown) of a second mating connector (not shown) inserted into the second chamber 201.

[0027] Referring to the drawings, Figure 3 As shown in another exemplary embodiment according to the present application, the connector terminal 1 is an integral stamping. The plurality of indentations form a zigzag pattern; and extend in the width direction of the connector terminal 1.

[0028] The first fixed portion 11 has a head and a tail in the length direction, and the tail of the first fixed portion 11 is close to the first end 14 of the connector terminal 1. When the housing 2 is injection molded, the injection molding material flows from the head of the first fixed portion 11 towards the tail of the first fixed portion 11, so as to prevent the coating in the first tooth groove from being washed by the injection molding material.

[0029] Referring to the drawings, Figure 4 , 5 As shown in another exemplary embodiment according to the present application, the connector includes a plurality of the connector terminals 1, which are arranged in an array in the housing 2.

[0030] In the foregoing various exemplary embodiments according to the present application, a closed annular groove is formed on the fixed portion of the connector terminal 1. The coating in the annular groove has a large bonding force with the terminal, and the coating in the annular groove is not affected by the injection molding material when the housing 2 is injection molded. Therefore, the coating in the annular groove will not be displaced, and the sealed bonding between the connector terminal 1 and the housing 2 can be ensured, thereby improving the sealing performance of the connector.

[0031] The connector terminal 1 includes a fixed portion for being fixed into a housing 2 of a connector, and a coating coated on the fixed portion for bonding the fixed portion to the housing 2. An annular groove is formed on the outside of the fixed portion, which surrounds the fixed portion and is closed. The coating in the annular groove is used to bond with the injection molding material for forming the housing 2, which is injection molded into the annular groove. When the housing 2 is injection molded, the coating will undergo a cross-linking reaction to seal the bonding of the connector terminal 1 to the housing 2.

[0032] On the outside of the fixing part, a closed annular groove is formed around the fixing part, and the coating in the annular groove can be combined with the injection molding material for forming the shell 2 which is injected into the annular groove.

[0033] The above merely illustrates the embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A press-to-connect connector seal structure, comprising: The connector terminal and the shell, the connector terminals are arranged in an array in the shell, the connector terminal comprises a fixed part, the fixed part is arranged in the middle of the length direction of the connector terminal, the fixed part is coated with a coating, a groove is arranged outside the fixed part, and the fixed part is injection molded with the shell.

2. The pin press-in connector seal structure of claim 1, wherein, The shell has a peripheral wall surrounding an inner cavity and a partition wall separating the inner cavity into a first chamber and a second chamber, the connector terminal passes through the partition wall of the shell, and the fixed part of the connector terminal is embedded in the partition wall of the shell.

3. The pin press-in connector seal structure of claim 1, wherein, The fixed part is externally provided with a plurality of annular grooves surrounding the fixed part in the width direction.

4. The pin press-in connector seal structure of claim 3, wherein, The fixed part comprises a first fixed part and a second fixed part arranged continuously, a plurality of first inclined teeth are formed on two side surfaces of the first fixed part respectively, the plurality of first inclined teeth are arranged in a row in the length direction and form an annular groove with the first side surface tooth groove of the connector terminal, and the middle part of the terminal is composed of a plurality of serrated annular grooves; a plurality of second inclined teeth are formed on two side surfaces of the second fixed part respectively, the plurality of second inclined teeth are arranged in a row in the length direction and form an annular groove with the first side surface tooth groove of the connector terminal, and the middle part of the terminal is composed of a plurality of serrated annular grooves; and the inclination directions of the first inclined teeth and the second inclined teeth are opposite.

5. The pin press-in connector seal structure of claim 1, wherein, The connector terminal is an integral stamping molded part, and the fixed part is stamped with a groove of a serrated structure.

6. The pin press-in connector seal structure of claim 1, wherein, The shell is an injection molded part, and the shell is fixed on the connector terminal by injection molding.

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