CN202210585U - Airtight and watertight multi-core sealing assembly - Google Patents

Abstract

The present utility model relates to the airtight and watertight electric connector field. The present utility model provides an airtight and watertight multi-core sealing assembly which is reasonable in structure and can solve defects of the prior glass sintering sealing assembly. The assembly is characterized in that the sealing assembly is composed of an epoxy resin injection molding body (1) and a pin contact piece (2), in the sealing assembly, a die opening method is adopted, epoxy resin materials are injected and molded through high temperature and high pressure, and the epoxy resin injection molding body is tightly and integrally combined with the pin contact piece (2) during the injection molding process. . By adopting the sealing assembly, the stability of electrical performance of a connector can be guarantee firstly, end face vertical water pressure and oil pressure resistant requirements can be satisfied, the intensity is large, the processing period is short, and the mechanical performance and the electrical performance are stable and reliable.

Description

An airtight and watertight multi-core sealing assembly

technical field

The utility model relates to the field of watertight (airtight) electrical connectors. the

technical background

Traditional watertight (airtight) connectors usually use glass sintering to achieve the function of the connector's longitudinal water pressure (air pressure) resistance. the

See Figure 1(a), Figure 1(b), Figure 1(c), and Figure 1(d); in the figure, A1 is the connector shell, A2 is the sealing glass, A3 is the pin contact, and A4 is the Sintered rings. the

The application of the structure of glass sintered parts has its limitations: first, it is difficult to realize the sintering of socket contacts in glass sintered parts, and only pin contacts can be used for sintering; The spacing must maintain a certain value, which cannot meet the requirements of sealing components with a large number of cores and a high arrangement density. Due to these structural limitations, the scope and occasions of glass sintered parts are very limited. the

Moreover, there are many defects and hidden dangers in glass sintering itself: the glass body of glass sintering is relatively brittle, and it is difficult to reprocess after sintering; some brands of glass tend to absorb moisture when exposed to the air, which affects electrical performance; the consistency of sintered products is poor Poor, can not meet the needs of mass production; and the thermal expansion and contraction of the glass body and other metal parts of the sealing component are different, in harsh environments, it is easy to cause gaps and lead to the decline of airtightness and watertightness; in sintered components On the surface, the identification marks are inconvenient; the structure is single, and cannot meet the needs of various environments or unconventional installation structures. the

Utility model content

The technical problem to be solved by the utility model is to provide an airtight and watertight multi-core sealing assembly with a reasonable structure and solve some disadvantages of the traditional glass sintered sealing assembly. the

For solving the problems of the technologies described above, the technical solution of the utility model is:

An airtight and watertight multi-core sealing assembly, characterized in that: the sealing assembly is composed of an epoxy resin injection molded body 1 and pin contacts 2; the sealing assembly adopts a mold opening method, and the epoxy resin material It is formed by high temperature and high pressure injection molding, and is closely combined with the pin contact part 2 to form a whole during the injection molding process. the

The epoxy resin injection molded body 1 is provided with a step surface 11 for cooperating with the compression nut in the connector to achieve axial positioning; the epoxy resin injection molded body 1 is also provided with a positioning keyway 12 for connecting with The positioning key in the device cooperates to realize radial positioning. the

The utility model can bring the following beneficial effects:

The utility model can solve the problem of water pressure and oil pressure resistance in the longitudinal direction of the end face of the connector, improves the strength of the sealing assembly, and can be reprocessed after completion; the performance of the insulator material is stable, does not absorb moisture, and ensures stable electrical performance; the product has high consistency and can Meet the production needs of large quantities; not limited by the size and structure, it can meet the requirements of sealing components with a large number of cores and a large arrangement density; epoxy injection molding materials can directly form the required identification marks at one time during injection molding. On the surface of the component; the structure can be changed at will according to the different installation and use environments. In addition, the utility model can make the sealing assembly modularized to form a processing line and greatly improve the processing and production efficiency of the connector sealing assembly. the

Description of drawings

Figure 1(a) is a schematic diagram of the overall structure of the existing glass sintered sealing assembly

Figure 1(b) is a cross-sectional view of the overall structure of the existing glass sintered sealing assembly

Figure 1(c) is a cross-sectional view of the sintered structure of the existing glass sintered sealing assembly

Figure 1(d) is a cross-sectional view of the sintered structure of the existing glass sintered sealing assembly

Fig. 2 is the front view of a preferred embodiment of the utility model

Fig. 3 is the left side view of a preferred embodiment of the utility model

Fig. 4 is the structural representation after the assembly of a preferred embodiment of the utility model

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail. the

As shown in Figure 2 and Figure 3, 1 in the figure is an epoxy resin injection molded body, 2 is a pin contact piece, 11 is a stepped surface, and 12 is a positioning keyway. the

This embodiment is an important part of a certain watertight connector, which requires the end face to withstand water pressure and oil pressure of 4.4Mpa in the longitudinal direction. the

The component structure is composed of two major parts, including epoxy resin injection molded body 1 and pin contacts 2 . the

(1) Design ideas

Due to the large number of connector contacts used in this product, the arrangement is relatively tight, and the order demand is large, the structure of epoxy injection sealing components is adopted. The sealing assembly can firstly ensure the stability of the electrical performance of the connector, and at the same time meet the requirements of the longitudinal water pressure and oil pressure resistance of the end face. It has high strength, short processing cycle, and stable and reliable mechanical and electrical properties. the

(2) Structural design

The method of mold opening is adopted, and the pin contact piece 2 made of brass is used, and then the epoxy resin material is injection molded under high temperature and high pressure, and it is tightly combined with the pin contact piece 2 to form a whole, so that the entire sealing assembly is modularized and easy to install and assembly, improving the convenience of connector installation operations. the

See Figure 4. the

The sealing assembly 3 is used as a part of the watertight connector 4, as shown in FIG. 4 . The structure of the sealing assembly 3 is located in the middle of the connector 4, and both ends are axially fixed by the stepped surface 11 and the compression nut 41, and radially fixed by the cooperation of the positioning keyway 12 and the positioning groove in the connector 4. Connect with lead wires or matching cables through the rear socket 42 . Sealing is realized with the housing of the connector 4 through the sealing ring 43 in the radial direction. the

The sealing assembly 3 makes the outer end surface of the connector 4 longitudinally resistant to water pressure, while the inner end surface of the connector 4 is longitudinally resistant to oil pressure. It can meet the use requirements of the connector, and is easy to assemble, and has stable electrical and mechanical properties. the

Claims (2)

1. airtight and watertight multicore black box, it is characterized in that: said black box is made up of epoxy resin injection molding body (1) and contact pin contacting piece (2); Said black box is the mode that adopts die sinking, with epoxide resin material through the HTHP injection molded, in the process of injection moulding with contact pin contacting piece (2) the formation one of combining closely.

2. according to claim 1 described a kind of airtight and watertight multicore black box, it is characterized in that: said epoxy resin injection molding body (1) be provided with step surface (11) be used for connector in gland nut cooperates the realization axial location; Also be provided with on the said epoxy resin injection molding body (1) positioning spline (12) be used for connector in the positioning key realization radial location that matches.

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