JP2019087391A - connector - Google Patents

Abstract

To provide a connector capable of preventing position deviation between a terminal insertion hole of an outer housing and a terminal housing chamber of an inner housing, at assembly of the outer housing and the inner housing.SOLUTION: A connector comprises: a square-cylinder outer housing 20 that has an inner housing chamber 28 and a terminal insertion hole 22a for a partner side terminal 40; and an inner housing 30 housed in the inner housing chamber 28 and having a terminal housing chamber. Warp regulation parts 29b and 36c are provided on an attachment surface 25a, 36b side between the outer housing 20 and the inner housing 30.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a connector in which an inner housing in which a plurality of terminals are accommodated is attached to an outer housing.

  As this type of connector, there is one disclosed in Patent Document 1. The connector 1 is, as shown in FIGS. 8 and 9, a cylindrical outer housing 2 made of synthetic resin, and a plate-like inner made of synthetic resin accommodated from the rear opening 3 of the cylindrical outer housing 2. A housing 5 and a plurality of terminals 7 held by the plate-like inner housing 5 are provided.

  On the front surface of the cylindrical outer housing 2, a plurality of terminal insertion holes 4 through which mating terminals (male terminals) (not shown) are inserted are opened in multiple stages in the left-right direction and in the vertical direction. Further, multiple rows of plate-like inner housings 5 stacked in a multistage manner are inserted into the rear opening 3 of the cylindrical outer housing 2. Furthermore, a plurality of terminal receiving chambers 6 are formed at predetermined intervals in the plate-like inner housing 5, and the terminals 7 with the electric wires 8 are received in the respective terminal receiving chambers 6. A lever 9 is rotatably attached to the outer upper and lower surfaces of the outer housing 2 for reducing the insertion force when it is fitted with a mating connector (not shown).

JP 2004-146259 A

  However, in the conventional connector 1, in the manufacturing process of molding the outer housing 2, both ends in the longitudinal direction of the outer housing 2 are displaced upward or downward, and the outer housing 2 is deformed (curved) ( Hereinafter, since it is easy to produce "warpage deformation", when the inner housing 5 is assembled to the outer housing 2, a positional deviation occurs between the terminal insertion hole 4 of the outer housing 2 and the terminal accommodating chamber 6 of the inner housing 5, When the terminal is inserted, there is a risk that a knock will occur.

  Therefore, the present invention has been made to solve the above-mentioned problems, and it is possible to prevent the positional deviation between the terminal insertion hole of the outer housing and the terminal storage chamber of the inner housing when assembling the outer housing and the inner housing. Aims to provide a connector that can

  The present invention relates to a connector, comprising: a rectangular cylindrical outer housing having an inner storage chamber and a terminal insertion hole for a mating terminal; and an inner housing housed in the inner storage chamber and having a terminal storage chamber, the outer A gist is that a warpage restricting portion is provided on the mounting surface side between the housing and the inner housing.

  According to the present invention, the warpage of the outer housing and the inner housing is corrected when the outer housing and the inner housing are assembled by the warpage restricting portion provided on the mounting surface side between the outer housing and the inner housing. The positional deviation between the hole and the terminal accommodating chamber of the inner housing can be reliably prevented.

It is a front view of the connector which assembled the outer housing and inner housing of one embodiment of the present invention. (A) is a perspective view of the said connector, (b) is an expansion perspective view of A part in a figure (a). It is a front view of the above-mentioned outer housing. (A) is a perspective view of the said outer housing, (b) is an expansion perspective view of B part in a figure (a). It is a front view of the above-mentioned inner housing. (A) is a perspective view of the said inner housing, (b) is an expansion perspective view of C part in a figure (a). (A) is explanatory drawing of the principal part which shows the case where there is no position shift in the terminal penetration hole of the above-mentioned outer housing, and the terminal accommodation room of inner housing, (b) is terminal accommodation of the terminal penetration hole of the same outer housing and inner housing It is explanatory drawing of the principal part which shows the case where position shift exists in a chamber. It is the perspective view which looked at the conventional connector from the front side. It is an exploded perspective view of the above-mentioned conventional connector.

  Hereinafter, an embodiment of the present invention will be described based on the drawings.

  Fig. 1 is a front view of a connector in which an outer housing and an inner housing according to an embodiment of the present invention are assembled, Fig. 2 (a) is a perspective view of the connector, and Fig. 2 (b) is a portion A in Fig. 2 (a). Fig. 3 is a front view of the outer housing, Fig. 4 (a) is a perspective view of the outer housing, Fig. 4 (b) is an enlarged perspective view of a portion B in Fig. 4 (a), Fig. 5 is the same 6 (a) is a perspective view of the inner housing, FIG. 6 (b) is an enlarged perspective view of a portion C in FIG. 6 (a), and FIG. 7 (a) is a terminal insertion of the outer housing. Explanatory drawing of the principal part which shows the case where there is no position shift in a hole and the terminal storage chamber of an inner housing, FIG.7 (b) shows the case where there is a position shift in the terminal penetration hole of an outer housing, and the terminal storage chamber of an inner housing. It is explanatory drawing of the principal part shown.

  As shown in FIGS. 1 to 6, the connector 10 is a rectangular cylindrical outer housing 20 made of synthetic resin, and a rectangular solid inner made of synthetic resin housed and mounted from the rear opening 27 of the outer housing 20. A housing 30 and a plurality of female terminals (terminals) 50 accommodated and held in the terminal accommodation chamber 33 of the inner housing 30 are provided.

  As shown in FIGS. 3 and 4 (a) and 4 (b), the outer housing 20 has a bottom wall 21 formed in a step-like shape, a front wall 22 vertically standing at the front end of the bottom wall 21, and the like. Both side walls 23, 23 vertically erected on both ends of the bottom wall 21 and the front wall 22, and bridged over the upper and rear ends of the both side walls 23, 23, and from the rear end of the bottom wall 21 downward And a pair of partition walls 25 and 25 which divide the central portion between the front wall 22 and the rear wall 24. Three rear openings 27, 27 and 27 are respectively formed in the upper openings 26 and 26 and the rear side.

  In the front wall 22, two upper and lower rows of terminal insertion holes 22a through which tab-like male terminals (a mating terminal) 40 of a mating connector (not shown) pass are formed in the left-right direction at a predetermined pitch. Further, a space formed by the bottom wall 21, the front wall 22, the side wall 23 and the partition wall 25 opposed to each upper opening 26 becomes an inner storage chamber 28 in which the housing main body 31 of the inner housing 30 described later is accommodated. There is. Further, at the central portion of the outer housing 20, an arm receiving recess 29 for receiving a lock arm 35 of the inner housing 30, which will be described later, is formed. A rectangular plate-like rib 25b is integrally formed on the side surface 25a of each partition 25 which is the mounting surface (fitting surface) of the outer housing 20 and the inner housing 30 on both sides of the arm housing recess 29. The rib 25 b and the bottom surface 29 a of the arm receiving recess 29 form a groove (warpage regulating portion) 29 b engaged with the respective ribs 36 c of the inner housing 30 described later.

  As shown in FIGS. 5 and 6 (a) and 6 (b), the inner housing 30 is accommodated in the left and right inner storage chambers 28, 28 from the left and right rear openings 27, 27 of the outer housing 20. A pair of housing bodies 31, 31 in which two cavities 33) are formed in the upper and lower rows at a predetermined pitch in the left-right direction, and a body connecting portion 32 located between the pair of housing bodies 31, 31 (central part of inner housing 30) A lock arm 35, which is integrally formed and is engaged with a mating connector (not shown), is provided.

  As shown in FIG. 6A, a box-shaped female terminal (terminal) 50 into which the tab-shaped male terminal 40 is inserted and connected is accommodated in the terminal accommodating chamber 33 of each housing main body 31. ing. The female terminal 50 is a crimp terminal for crimp connection of the electric wire 51.

  Further, the lock arm 35 has a flat U-shaped arm which is elastically deformed by having a connecting portion 36a on the free end side engaged with the recess 24a formed at the center of the rear wall 24 of the outer housing 20 from the rear side. The main body 36 and the both sides of the base of the arm main body 36 are formed integrally integrally elastically via a pair of slits 37, 37, and are engaged and disengaged with a locking portion of a mating connector not shown on the free end side. And a lock body 38 having a projection 38a.

  As shown in FIGS. 6A and 6B, the arm main body 36 of the lock arm 35 and the base end side of the lock main body 38 are integrally protruded slightly forward of the front surface of the main body connecting portion 32. The pair of grooves 29b and 29b of the outer housing 20 engage with the lower sides of the side surfaces 36b and 36b as mounting surfaces (fitting surfaces) between the outer housing 20 and the inner housing 30 at the base of the arm body 36. A pair of ribs (warpage restricting portions) 36c, 36c are integrally formed to project integrally.

  As shown in FIG. 5, the main body connecting portion 32 between the pair of housing main bodies 31, 31 of the inner housing 30 also has a multipolar structure in which the terminal accommodating chambers (cavities) 33 are formed in one row at a predetermined pitch in the lateral direction. ing. Further, the female terminals 50 accommodated in the terminal accommodation chamber 33 of the housing body 31 and the body connecting portion 32 are primarily locked by a flexible lance (not shown) formed in the terminal accommodation chamber 33 and by a retainer (not shown) It is designed to be secondary locked. Further, as shown in FIGS. 2A and 6A, the pair of housing main bodies 31, 31 of the inner housing 30 are provided from the left and right rear openings 27, 27 of the outer housing 20, respectively. When housed inside, the rear of the outer housing 20 is formed between the upstanding wall 31a and the locking projection 31b integrally formed on the upper and lower surfaces of the pair of housing bodies 31, 31 and the rear end side of the lower surface of the body connecting part 32. The wall 24 is adapted to be clamped.

  According to the connector 10 of the above embodiment, as shown in FIG. 1 and FIG. 2, when the outer housing 20 and the inner housing 30 are assembled, the pair of grooves 29 b, 29 b as the warpage regulating portion of the outer housing 20 The warpage of the outer housing 20 and the inner housing 30 is corrected by inserting and engaging a pair of ribs 36 c as a warpage restricting portion of the outer housing 20 as shown in FIG. 7A. The positional deviation between the terminal insertion hole 22a and the terminal storage chamber 33 of the inner housing 30 can be reliably prevented.

  More specifically, as shown in FIG. 3, in the manufacturing process of molding the outer housing 20, warpage occurs in which both ends in the longitudinal direction of the outer housing 20 are displaced upward or downward. If the groove 29b and the rib 36c as a warpage regulating portion are not formed in the inner housing 30, as shown in FIG. 7B, when assembling the outer housing 20 and the inner housing 30, it is attributed to the clearance due to the warpage. As a result, relative positional deviation (pitch deviation) H occurs between the terminal insertion hole 22a of the outer housing 20 and the terminal accommodation chamber 33 of the inner housing 30, and the tab-like male terminal 40 of the mating connector is used as a terminal of the outer housing 20. When inserted into the insertion hole 22a, a dodging occurs. In the connector 10 according to the embodiment, when assembling the outer housing 20 and the inner housing 30, the pair of grooves 29b, 29b as the warpage restricting portion of the outer housing 20 are paired with the ribs 36c, 36c as the warpage restricting portion of the inner housing 30. By inserting and engaging to restrict the central portion of the outer housing 20 and the central portion of the inner housing 30 in the vertical and horizontal directions, it is possible to correct the warpage of the outer housing 20 and the inner housing 30, as shown in FIG. As shown in the above, the relative positional deviation between the terminal insertion hole 22a of the outer housing 20 and the terminal storage chamber 33 of the inner housing 30 can be reliably prevented. For this reason, when inserting the tab-shaped male terminal 40 of the mating connector from the terminal insertion hole 22a of the outer housing 20 into the box-shaped female terminal 50 accommodated in the terminal accommodating chamber 33 of the inner housing 30, Therefore, both terminals 40 and 50 can be smoothly and reliably fitted and connected.

  Further, the outer housing is formed by integrally projecting a pair of ribs 36c, 36c as a warpage restricting portion of the inner housing 30 below both side surfaces 36b, 36b of the base end portion of the first arm portion 36 of the lock arm 35. By engaging with the 20 pairs of grooves 29b, 29b, the lock strength of the lock arm 35 can be further improved.

  According to the embodiment, the ribs are provided on both sides of the lock arm of the inner housing, and the grooves engaged with the ribs are provided on both sides of the arm accommodation recess of the outer housing. However, the grooves are provided on both sides of the lock arm. Ribs engaged with the grooves may be provided on both sides of the arm receiving recess.

Reference Signs List 10 connector 20 square cylindrical outer housing 22a terminal insertion hole 25a side surface (mounting surface)
28 inner storage chamber 29 arm storage recess 29 b groove (warpage regulating portion)
30 inner housing 33 terminal accommodating chamber 35 lock arm 36 b side surface (mounting surface)
36c Ribs (warpage restriction part)
40 male terminal (other terminal)
50 female terminals (terminals)

Claims (3)

An angular cylindrical outer housing having a terminal insertion hole for an inner storage chamber and a mating terminal;
And an inner housing accommodated in the inner accommodating chamber and having a terminal accommodating chamber,
A connector characterized in that a warpage restricting portion is provided on the mounting surface side between the outer housing and the inner housing. The connector according to claim 1, wherein
A groove as the warpage restricting portion is provided at a central portion of the outer housing,
A connector characterized in that a rib engaged with the groove as the warpage restricting portion is provided at a central portion of the inner housing. The connector according to claim 2, wherein
A lock arm for locking the mating connector is provided at the center of the inner housing, and the ribs are provided on both sides of the lock arm,
The connector according to claim 1, wherein an arm receiving recess for receiving the lock arm is provided at a central portion of the outer housing, and the grooves in which the respective ribs are engaged are provided on both sides of the arm receiving recess.

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