KR20230041408A - Connectors for automobiles - Google Patents

Abstract

The present invention proposes an automotive connector that can produce multiple terminals with accurate positions. The connector of the present invention has a housing (10) having a tubular counterpart coupling part (14) and a core (20) inserted into the counterpart coupling part (14) from the inside of the housing (10), coupled to the housing (10) at a certain depth, and having a plurality of terminals by insert injection molding. The separation of a core can be prevented by providing at least one of a lance (18) formed on the bottom of the housing to be elastically caught on a locking part (26) formed on the bottom of the core (20) and a hook (14b) formed on the side of the housing to be caught on a locking protrusion (28) formed on the side of the core (20). Since both ends of the terminal (30) are exposed to the outside of the core (20), the exact position within a mold can be maintained.

Description

Connectors for automobiles {Connectors for automobiles}

The present invention relates to a connector for a vehicle, and more particularly, to a connector for a vehicle configured to secure a predetermined and accurate position of a plurality of terminals for electrical signal transmission.

Various types of connectors for automobiles are used to transmit electrical signals. These connectors include a plurality of terminals for electrical contact, and since the metallic terminals are made of a different material from the connector housing, which is usually made of synthetic resin, insert injection molding is common.

For example, a connector for automobiles as shown in (a) of FIG. 1 includes a housing 2 made of synthetic resin and a plurality of terminals 4 fixed to the inside of the housing 2. Since the terminal 4 here is made of a conductive metal, the connector as shown is generally made by injection molding with the terminal 4 inserted.

Such insert injection is performed by supplying high-pressure molten resin into the cavity of the mold, and the molten resin supplied into the cavity can be said to be in a state of considerably high pressure. Furthermore, the housing 2 has a relatively large overall volume compared to the terminal 4, and since the terminal 4 is located inside the housing 2 as a whole, the supplied molten resin can be said to be of high pressure.

supply like this The high-pressure molten resin becomes a significant obstacle to maintaining the correct position of the terminal (4). For example, the PCB terminal portion 4a coupled to the assembly hole of the printed circuit board (not shown) coupled to the inside of the connector and the connector terminal portion 4b that must accurately contact the counterpart terminal are injection molded in a displaced state from a predetermined position. There are many cases. In this way, a significant problem arises in the function of a connector to be electrically connected in which both ends of the terminal to be exposed to the outside are deviated from the correct position.

As described above, the main object of the present invention is to enable the terminals to accurately maintain a predetermined position when molding an automobile connector having a plurality of terminals.

This fact means that it is easy to assemble correctly with other components (printed circuit boards, etc.) inside the connector and at the same time provides a connector for automobiles that can secure an accurate electrical connection with the terminal of the connector of the counterpart. it is also

Automotive connector of the present invention A housing having a tubular counterpart coupling part, and by being inserted into the counterpart coupling portion from the inside of the housing, coupled with the housing at a certain depth, and having a plurality of terminals by insert injection molding contains a core that Further, the fastening means restricts movement in a direction in which the coupling is released in a state in which the core is inserted into the coupling part of the counterpart of the housing. And in the present invention, both ends of the terminal are exposed to the outside of the core.

And according to the embodiment of the fastening means, a lance molded on the bottom surface of the housing so as to be elastically caught on the hooking part molded on the bottom surface of the core, and a lance molded on the side surface of the housing so as to be caught on the hooking jaw molded on the side surface of the core. N includes at least one of the hooks.

According to a specific embodiment, the first end of the terminal extends upward and is exposed from the core, the second end of the terminal extends horizontally to the outside of the core, and both sides of the vertical portion of the lower portion of the first end are made of synthetic resin. It is firmly supported.

According to the present invention having the configuration described above, since the core for insert injection molding a plurality of terminals is configured in a relatively small size, it can be sufficiently molded with a relatively weak injection pressure. Since both end portions of the terminals inserted in this way are supported by molds to maintain their positions, it is expected that ultimately, a plurality of terminals can be produced with both end portions maintained in accurate positions.

And since the entire automotive connector is completed by structurally combining the core having terminals with the housing in this way, the connector as a finished product can maintain the correct position of the terminal, making electrical contact with the counterpart connector and An advantage that accurate assembly with a printed circuit board can be easily performed can be expected.

1 is a perspective view illustrating the configuration of a conventional automotive connector, (a) is a perspective view of a state in which terminals are coupled, (b) is a perspective view showing only terminals separated;
2 is a perspective view showing a connector for a vehicle of the present invention;
3 is a perspective view showing a core body assembled to a connector housing of the present invention together with a plurality of terminals;
4 is a longitudinal cross-sectional view of the connector of the present invention, and
5 is an exemplary perspective view of the connector housing of the present invention.

Next, the present invention will be described in more detail based on the embodiments shown in the drawings.

First, as shown in FIG. 2, the connector of the present invention includes a housing 10 in which a number of parts including a printed circuit board can be installed, and a core structurally coupled to the inside of the housing 10 ( 20) are included. The housing 10 and the core 20 are injection molding products made of a synthetic resin material, and the core 20 may be structurally coupled to the inside of the housing 10 .

In addition, the housing 10 has a tubular counterpart coupling part 14 coupled to a connector, which is the counterpart, on one side, and the housing 10 has a structure that can be fixed to a necessary part of the vehicle. A core 20 is structurally coupled to the inside of the housing 10, and the core 20 has a plurality of terminals 30 for electrical signal transmission. That is, the plurality of terminals 30 embedded in the connector of the present invention are supported by the core 20.

In the present invention, the core 20 is injection molded of a synthetic resin material, and the terminal 30 is made of a metal material having conductivity. Therefore, the plurality of terminals 30 are made integrally with the core 20 by insert injection molding. Here, looking at the structural coupling relationship between the terminal 30 and the core 20, both end portions 32 and 34 of the plurality of terminals 30 extend from the core 20 while being exposed to the outside.

That is, in the illustrated embodiment, the first end 32 of the terminal 20 is assembled into a coupling hole of a printed circuit board (not shown) inside the housing 10, and is molded to extend upward from one end of the core. has been And the second end 34 of the terminal 20 electrically contacts the terminal of the counterpart connector and extends from the other end of the core 20 in the horizontal direction. This second end 34 is located inside the counterpart coupler 14 shown in FIG.

In this way, both ends of the terminal 30 that is insert injection molded into the core 20 are exposed to the outside from both sides of the core 20 . The fact that both ends of the terminal 30 are exposed in this way means that both ends exposed during insert injection molding can be supported in holes in the mold, and at the same time, the size of the core 20 is relatively small. It is also to do

Therefore, since the size of the core 20 is significantly smaller than that of the housing 10, the pressure of the resin injected to make the core 20 does not need to be high. That is, even if the molten resin is injected at a low pressure, it can be fully supplied into the cavity as a whole. In addition, the fact that both ends 32 and 34 of the terminal 30 can be respectively supported with respect to the structure inside the mold means that the position of the terminal 30 is not changed at all with respect to the supply pressure of the molten resin.

In addition, it is preferable that the terminal 30 insert injection molded into the core 20 is configured to maintain a more stable position. As shown in Figs. 3 and 4, the middle portion of the terminal 38 has a position holding structure 38 formed into a circular shape, for example. Inside the circular position holding structure 38, a position holding protrusion 22 molded by synthetic resin is integrally formed with the core 20.

Regarding this position holding structure 38, since the position holding protrusion 22 is integrally made during injection molding, both can be stably supported. When the terminals 20 are arranged vertically as in the illustrated embodiment, it is natural that this structure should be applied to all terminals 20 . In this way, the core 20 that is insert injection molded to have a plurality of terminals 30 with both ends exposed therein is structurally coupled to the inside of the connector housing 10 .

In addition, in order to further prevent the terminal 20 from being pushed backward, the vertical portion of the terminal 30 may be substantially firmly supported because the synthetic resin is molded in close contact. That is, as shown in FIG. 4, synthetic resin adheres to both the front and rear sides of the vertical portion 33 corresponding to the lower portion of the first end portion 32 and the vertical portion 35 formed in the middle of the terminal 30. Since it is, it is thought that the terminal 30 can maintain a sufficiently robust state.

As shown in FIGS. 2 , 4 and 5 , a core 20 having a plurality of terminals 30 is coupled into a tubular counterpart coupling portion 14 . In this way, as the core 20 is inserted from the inside of the housing 10 to the outside into the tubular mating part 14, the core 20 is expected to be stably supported while substantially minimizing the play. I think.

In addition, a core side support portion 14c for supporting one side of the core 20 on the inner side of the housing 10 toward the housing 10 from the counterpart coupling portion 14 is molded, and such a core side support portion 14c It can be said that is shaped to be continuous with the corresponding side surface of the counterpart coupling portion 14. On the other side of the core side support 14c, a side hook 14b is formed in the direction of coupling of the core 20.

As shown in FIG. 3 , these side hooks 14b are hooked to the locking jaws 28 formed on the corresponding side surfaces of the core 20 . As shown in FIG. 4, a lance 18 extending outward is formed on the bottom surface of the housing 10. This lance 18 is a part caught on the hooking part 26 formed on the bottom surface of the core 20 when the core 20 is coupled to the counterpart coupling part 14 from the inside to the outside in the direction of the arrow.

For engagement, the core 20 enters the tubular counterpart engagement portion 14 inside the housing 10 . When the core 20 enters the mating part 14 to a certain depth, the insertion of the core 20 is stopped by a locking structure (not shown). Here, the hooking structure means a structure in which interference occurs between the core 20 and the housing 10 or the inside of the mating part 14 of the housing 10. For example, the protruding part of the core 20 It refers to a structure for preventing general over-insertion, such as being caught on the locking jaw of the housing 10.

For example, a structure in which the skirt 29 extending downward from the inner end of the core 20 is caught on the projecting portion of the bottom surface of the housing 10 can be mentioned. That is, according to the present invention, when the core 20 starts to be inserted into the counterpart coupling part 14 from the inside of the housing 10, the core 20 is prevented from further insertion at a certain depth. The structure may be implemented with, for example, a protrusion formed on one side and a locking jaw formed on the other side.

In this way, when the core 20 is stopped in a state where it is inserted into the counterpart coupling part 14 at a certain depth, the lance 18 is elastically deformed downward by the locking part 26 on the bottom of the core 20, and then While returning upward again, the lance 18 is caught on the hooking portion 26 . Also, in this way, the side hook 14b of the housing 10 is also caught on the locking jaw 28 formed on the corresponding side of the core 20, so that the inserted core 20 is arbitrarily placed in the counterpart insertion part 14. It is structured so that it does not fall out.

As described above, it can be seen that the basic technical idea of the present invention is to insert injection mold the terminal 30 into the core 20 and structurally couple the core 20 to the housing 10. . It is natural that various modifications will be possible for those skilled in the art within the scope of these basic technical ideas, and it can be said that it is natural in view of the purpose of the Patent Act that the scope of protection upon registration should be interpreted based on the description of the claims. there is.

10 ..... housing
14 ..... mating part
14a ..... lance
14b ..... hook
20 ..... core
28 ..... snag
30 ..... Terminal
32 ..... 1st end
34 ..... 2nd end

Claims (3)

a housing 10 having a tubular counterpart coupling portion 14;
A core 20 coupled to the housing 10 with a predetermined depth by being inserted into the counterpart coupling part 14 from the inside of the housing 10 and having a plurality of terminals by insert injection molding; and
In a state in which the core 20 is inserted into the counterpart coupling portion 14 of the housing 10, it is composed of a fastening means for regulating movement in a direction in which the coupling is released;
Automotive connector characterized in that both ends of the terminal (10) are exposed to the outside of the core (20).
The method of claim 1, wherein the fastening means comprises a lance 18 molded on the bottom surface of the housing and a lance 18 molded on the side surface of the core 10 so as to be elastically caught by the hooking part 26 molded on the bottom surface of the core 20. A connector for a vehicle including at least one of the hooks (14b) molded to the side of the housing so as to be caught on the locking jaw (28).
3. The terminal (30) of claim 1 or 2, wherein the first end (32) of the terminal (30) extends upwardly and is exposed in the core (20), and the second end (34) of the terminal (30) extends upwardly and exposes the core (20). An automobile connector that extends horizontally to the outside of the first end portion 32 and supports the front and rear sides of the lower vertical portion of the first end portion 32 in close contact with synthetic resin.

Images