JP2010123451A - Connector housing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector housing capable of improving productivity, and reducing cost. <P>SOLUTION: The connector housing 1 composed of a resin molding formed by using a die for molding includes the housing body 2 having a first terminal insertion hole 2a, and a second terminal insertion hole 2b to insert female and male terminals respectively, and a space part 2c in order to connect the female and male terminals inside, and ribs 3, 3 (only one is shown) which are integrally arranged at the housing body 2, and which have recessed grooves 3a, 3a and are extending along an insertion direction of the female and male terminals. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a connector housing, and more particularly to a connector housing made of a resin molded body formed using a molding die.

  As a conventional connector housing, there is one including a housing main body having a space for connecting male and female terminals therein, and a rib for guiding the mating connector housing when the connectors are connected to each other (Patent Document 1).

  The housing body has a first terminal insertion hole for inserting an external terminal (for example, a male terminal) and a second terminal insertion hole for inserting an internal terminal (for example, a female terminal), and is entirely formed of a resin molded body. ing. The first terminal insertion hole and the second terminal insertion hole communicate with each other via a space in the housing body.

  The rib extends along each opening direction of the first terminal insertion hole and the second terminal insertion hole, and is provided integrally with the housing body.

  In the connector housing configured as above, the internal terminal is normally locked with a lance in the housing body, and the external terminal (internal terminal of the mating connector) is connected to the internal terminal so that the connector housing of the mating connector is Installed. At this time, the mating connector housing is attached to the connector housing by moving the mating connector housing along the rib in the insertion direction of the internal terminal.

By the way, this type of connector housing has a space portion along a direction orthogonal to the opening direction of the first terminal insertion hole and the second terminal insertion hole in order to allow the male and female terminals to be disconnected in the connected state. Is opened outside the housing.
JP 2001-118626 A

  However, according to the conventional connector housing in which the space for connecting the male and female terminals opens to the outside of the housing, the manufacturing is performed using the molding die 100 as shown in FIG. The resin molded body L contracted by cooling in the metal mold 100 is only supported by the slide core 101 and the support pins 102, and a high stress is generated in the support pins 102 by pulling out the slide core 101. This is because the movable side mold plate 104 moves in a direction away from the fixed side mold plate 103 (slide core 103a) when the mold is opened, and then the slide core 101 moves in the extraction direction A when the mold is pulled out. This is because the resin molded body L in the side mold plate 104 bends in the direction indicated by the arrow B, and the pulling force of the slide core 101 acts on the support pins 102 via the resin molded body L.

  As a result, when a part of the support pin 102 enters the resin molded body L in the molding die 100 due to breakage, a large number of the resin molded bodies L are discarded as defective products, and productivity is reduced. There was a problem.

  In addition, there is a problem that the support pin 102 needs to be replaced with a new support pin due to breakage, and the cost increases.

  Accordingly, it is an object of the present invention to provide a connector housing that can increase productivity and can reduce the cost.

(1) In order to achieve the above object, the present invention is a connector housing made of a resin molded body formed using a molding die, and a pair of terminal insertion holes into which male and female terminals are inserted, and A connector housing comprising a housing main body having a space for connecting the male and female terminals therein, and a rib integrally provided on the housing main body and extending in the insertion direction of the male and female terminals. I will provide a.

(2) In order to achieve the above object, the present invention is a connector housing made of a resin molded body formed by using a molding die having a molded body holder portion therein, in which male and female terminals are respectively inserted. A housing main body having a pair of terminal insertion holes and a space for connecting the male and female terminals therein, and a concave or convex portion provided integrally with the housing main body and extending along the insertion direction of the male and female terminals. The rib provides a connector housing in which the concave portion or the convex portion is formed in a portion corresponding to the molded body holder portion in the molding die.

(3) In the connector housing according to (1), the space portion is opened in a direction intersecting with the insertion direction of the male and female terminals.

  According to the present invention, productivity can be improved and cost reduction can be achieved.

[Embodiment]
FIG. 1 is a perspective view for explaining the entire connector housing according to the embodiment of the present invention. FIG. 2 is a cross-sectional view for explaining the entire connector housing according to the embodiment of the present invention. FIGS. 3A and 3B are a front view and a side view, respectively, for explaining the entire connector housing according to the embodiment of the present invention. 3A shows a front view, and FIG. 3B shows a side view.

[Overall configuration of connector housing]
In FIG. 1, a connector housing denoted by reference numeral 1 includes a housing main body 2 and ribs 3 and 3, and is a male connector having a substantially rectangular shape that is detachable as a whole, for example, to which a mating female connector housing (not shown) can be attached. It is formed by a housing.

(Configuration of housing body 2)
As shown in FIG. 2, the housing body 2 has a plurality of (six in the embodiment) first terminal insertion holes 2a, 2a,... For inserting male terminals (not shown) as external terminals, A plurality of (six in the embodiment) second terminal insertion holes 2b, 2b,... For inserting the female terminal 4 (indicated by a two-dot chain line in FIG. 1), and the male terminal and female terminal 4 inside. It has a space portion 2c for connection, and the whole is formed of a resin molded body made of a material such as polybutylene terephthalate (PBT) using a molding die (described later).

  On the upper surface of the housing main body 2, a lock arm 5 located at the center in the width direction is integrally provided so that the arm tip can be displaced. The lock arm 5 is provided with a locking projection 5a for locking the mating female connector housing. Further, on the upper surface of the housing body 2, there is integrally provided an arm warping restricting portion 6 that is located on the arm tip side of the lock arm 5 and restricts the warping of the lock arm 5. Further, on the upper surface of the housing main body 2, a convex portion 7 for preventing erroneous mounting of the housing, which is located on one side edge of the housing main body 2 and extends along the insertion direction of the male terminal and the female terminal 4 (shown in FIG. 1) ( (Shown in FIG. 1) are provided integrally.

  The first terminal insertion holes 2a, 2a,... Communicate with the space 2c and are arranged at one end of the housing body 2.

  The second terminal insertion holes 2b, 2b,... Communicate with the space 2c, and are arranged at the other end of the housing body 2 on the axis of the first terminal insertion holes 2a, 2a,.

  The space 2c opens to the outside of the connector housing 1 along a direction orthogonal to the opening direction of the first terminal insertion holes 2a, 2a,... And the second terminal insertion holes 2b, 2b,. It is arranged in the middle part. The space 2c is configured to be able to release the connection between the male terminal and the female terminal 4 in the connected state in the housing body 2. The opening direction of the space 2c may be a direction that intersects the opening direction of the first terminal insertion holes 2a, 2a,... And the second terminal insertion holes 2b, 2b,.

(Configuration of ribs 3 and 3)
As shown in FIG. 1, the ribs 3 and 3 are formed in respective opening directions (male terminals and 2a, 2a,... And second terminal insertion holes 2b, 2b,... (Both shown in FIG. 2). It extends along the insertion direction of the female terminal 4, and is integrally provided on the upper surface of both side edges of the housing body 2. The ribs 3 and 3 are configured to guide the mating female connector housing when the housing 3 is mounted. The ribs 3 and 3 are configured to exhibit a function of preventing dust from entering the back side of the lock arm 5 and a function of reinforcing the housing body 2.

  As shown in FIGS. 3A and 3B, the ribs 3 and 3 are provided with concave grooves 3a and 3a as concave portions extending along the insertion direction of the female terminal 4 (shown in FIG. 1). Yes. The concave grooves 3a and 3a are formed in a portion corresponding to a convex molded body holder portion (described later) in the molding die.

[Method of manufacturing connector housing 1]
Next, a manufacturing method of the connector housing 1 shown in the present embodiment will be described with reference to FIGS. 4A (a), (b), FIGS. 4B (c), (d), and FIG. 4C. 4A to 4C are cross-sectional views for explaining a method of manufacturing the connector housing shown in the embodiment of the present invention. FIG. 4A (a) shows a closed mold state, and FIG. 4 (b) shows a resin injection state. FIG. 4B (c) shows the mold open state, and FIG. 4B (d) shows the slider core pulled out. FIG. 4C shows the connector housing being taken out.

  For manufacturing the connector housing 1 shown in the present embodiment, a molding die 40 as shown in FIG. 4A is used. The molding die 40 includes a fixed side mold plate 41, a movable side mold plate 42, and a slide core 43.

  The fixed side mold plate 41 has a cavity 41a that opens to the movable side mold plate 42 side. In the fixed side template 41, slide pins 41b, 41b,... For forming the first terminal insertion holes 2a, 2a,... And the second terminal insertion holes 2b, 2b,. 6) are arranged.

  The movable side mold plate 42 has a cavity 42 a for forming the connector housing 1 together with the cavity 41 a of the fixed side mold plate 41, and is disposed so as to be able to advance and retreat to the side of the fixed side mold plate 41. A part of the first terminal insertion hole 2a of the housing body 2 is formed in the movable side mold plate 42 together with the slide pins 41b, 41b,... And the support pins 42b, 42b for supporting the resin molded body L in the cavity 42a. ,... (6 in the embodiment) are arranged. The movable side mold plate 42 is integrally formed with molded body holder portions 42c and 42c (one in FIGS. 4A and 4B) that project into the cavity 42a and form the concave grooves 3a and 3a of the ribs 3 and 3. Is provided.

  The slide core 43 is disposed on the movable side mold plate 42 so as to be able to advance and retreat in a direction perpendicular to the mold closing direction and the mold opening direction, and is configured to form a space 2 c of the housing body 2. The slide core 43 is provided with pin insertion holes 43a, 43a,... (Six in the embodiment) through which the slide pins 41b, 41b,.

  In the manufacturing method of the connector housing 1 shown in the present embodiment, the steps of “mold closing”, “resin injection”, “mold opening”, “slider core extraction”, and “resin molding removal” are sequentially performed. Therefore, each of these steps will be described sequentially.

"Closing mold"
As shown in FIG. 4A (a), the slide core 43 is advanced into the cavity 42a in advance, and the movable side mold plate 42 disposed at a predetermined position is brought into contact with the fixed side mold plate 41 to perform mold closing. In this case, when the mold is closed, the cavity 41a of the fixed mold 41 and the cavity 42a of the movable mold 42 communicate with each other, and the slide pins 41b, 41b, ... are inserted into the pin insertion holes 43a of the slide core 43. , 43a. Further, the slide pins 41b, 41b,... And the support pins 42b, 42b,.

"Resin injection"
As shown in FIG. 4A (b), a predetermined amount of PBT resin heated and melted is injected into the cavities 41a and 42a from the runner and gate (both not shown) of the molding die 40. In this case, when a predetermined amount of PBT resin is injected into the cavities 41a and 42a, the cavities 41a and 42a are filled with the PBT resin. Thereafter, a resin molded body L (connector housing 1) as shown by a two-dot chain line in FIG. 4A (b) is formed in a contracted state due to solidification by cooling of the PBT resin.

"Open mold"
As shown in FIG. 4B (c), the mold is opened by moving the movable side template 42 in a direction away from the fixed side template 41 (shown in FIG. 4A). In this case, when the mold is opened, the fitted state between the slide pins 41b, 41b,... And the support pins 42b, 42b,... Is released, and the slide pins 41b, 41b,. , 43a,... Thereby, the connector housing 1 in the cavity 42a is supported by the support pins 42b, 42b,..., The slide core 43, and the molded body holder portions 42c, 42c,.

"Pull out the slide core"
As shown in FIG. 4B (d), the slide core 43 is retracted from the movable side template 42 and pulled out. At this time, the pulling force of the slide core 43 acts on the support pins 42b, 42b,... And the molded body holder portions 42c, 42c via the connector housing 1. For this reason, the connector housing 1 does not bend by pulling out the slide core 43, and high stress is not generated in the support pins 42b, 42b,.

"Removal of molded resin"
As shown in FIG. 4C, the connector housing 1 made of a resin molded body is taken out from the cavity 42a of the movable side mold plate 42 by an extrusion pin (not shown).

[Effect of the embodiment]
According to the embodiment described above, the following effects can be obtained.

(1) Breakage of the support pins 42b, 42b,... In the molding die 40 can be suppressed, the number of discarded connector housings 1 can be reduced, and productivity can be increased.

(2) The replacement of the support pins 42b, 42b,... In the molding die 40 can be reduced, and the cost can be reduced.

  As mentioned above, although the connector housing of this invention was demonstrated based on said embodiment, this invention is not limited to said embodiment, It implements in a various aspect in the range which does not deviate from the summary. For example, the following modifications are possible.

(1) In the present embodiment, the case where the grooves 3a and 3a are provided in the ribs 3 and 3 has been described. However, the present invention is not limited to this, and a convex portion may be provided on the rib. In this case, a concave portion corresponding to the convex portion of the rib is provided in the molding die for forming the connector housing.

(2) In the present embodiment, the case where the material of the connector housing 1 is PBT resin has been described. However, the present invention is not limited to this, and other materials such as PET (polyethylene terephthalate) and PPS (polyphenylene sulfide) resin are used. It may be a resin material.

The perspective view shown in order to demonstrate the whole connector housing which concerns on embodiment of this invention. Sectional drawing shown in order to demonstrate the whole connector housing which concerns on embodiment of this invention. (A) And (b) is the front view and side view shown in order to demonstrate the whole connector housing which concerns on embodiment of this invention. (A) And (b) is sectional drawing shown in order to demonstrate mold closing and resin injection | pouring in the manufacturing method of the connector housing shown to embodiment of this invention. (C) And (d) is sectional drawing shown in order to demonstrate the mold opening and the extraction of a slider core in the manufacturing method of the connector housing shown to embodiment of this invention. It is sectional drawing shown in order to demonstrate taking-out of the connector housing in the manufacturing method of the connector housing shown to embodiment of this invention. Sectional drawing shown in order to demonstrate the malfunction of the conventional connector housing.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Connector housing, 2 ... Housing main body, 2a ... 1st terminal insertion hole, 2b ... 2nd terminal insertion hole, 2c ... Space part, 3 ... Rib, 3a ... Concave groove, 4 ... Female terminal, 5 ... Lock arm 5a ... Locking convex part, 6 ... Warping-back restricting part, 7 ... Convex part for preventing housing erroneous mounting, 40 ... Molding template, 41a ... Cavity, 41b ... Slide pin, 42 ... Movable side template, 42a ... Cavity, 42b ... support pin, 42c ... molded body holder, 43 ... slide core, 43a ... pin insertion hole, 100 ... molding die, 101 ... slide core, 102 ... support pin, 103 ... fixed side template, 103a ... Slide core, 104 ... Movable side plate, L ... Resin molding

Claims (3)

A connector housing comprising a resin molded body formed using a molding die,
A housing main body having a pair of terminal insertion holes for inserting male and female terminals, and a space for connecting the male and female terminals inside,
A connector housing comprising: a rib provided integrally with the housing main body and having a concave portion or a convex portion extending along an insertion direction of the male and female terminals. A connector housing made of a resin molded body formed using a molding die having a molded body holder portion therein,
A housing body having a pair of terminal insertion holes into which male and female terminals are inserted, and a space for connecting the male and female terminals,
A rib having a concave portion or a convex portion provided integrally with the housing main body and extending along the insertion direction of the male and female terminals;
The rib is a connector housing in which the concave portion or the convex portion is formed in a portion corresponding to the molded body holder portion in the molding die.   The connector housing according to claim 1, wherein the space portion is opened in a direction intersecting with an insertion direction of the male and female terminals.

Images