JP2596619Y2 - Shunt connector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shunt connector which is attached to a pair of post contacts which are attached to a printed circuit board and project upward, and which electrically short-circuit the pair of post contacts.

[0002]

2. Description of the Related Art Various types of such shunt connectors have been known, for example, Japanese Patent Application Laid-Open Nos. Sho 62-52870, 61-53879 and 61-156.
No. 14, JP-A-62-74772 and the like.

FIG. 9 shows an example of such a shunt connector.
(A) and (B) show the shunt connector 5
No. 0 is configured by inserting a contact 55 made of a conductive material into a housing 51 made of an insulating material. Housing 5
1 has a contact holding space 52 opened on the upper surface, and a pair of left and right post insertion holes 53 opened from the contact holding space 51 on the lower surface. The contact 55 is held in the contact holding space 51. For this reason, the holding portion 56 having a rectangular closed cross-sectional shape that surrounds the contact holding cavity 51 from the front, rear, left and right along the inner surface thereof. Have. A pair of elastic arms 57 and 58 facing each other and extending downward toward the post insertion hole 53 are provided on both left and right sides of the holding portion 56.
6 are formed integrally.

The shunt connector 50 is mounted on a pair of post contacts 60 projecting from a printed circuit board so that the post contacts 60 project from the post insertion holes 53 into the contact holding spaces 51.
The pair of elastic arms 57 and 58 approach each other downward, and each elastic arm 57 and 58 clamps the post contact 60 by its elastic force. As a result, the elastic arms 57 and 58 are electrically connected to the post contacts 60, and the left and right post contacts 60 are short-circuited.

[0005]

However, when the shunt connector 50 is attached to the post contact 60 in this manner, each of the elastic arms 57 and 58 is pushed out by the post contact 60 in the direction shown by the arrow A. . For this reason, the holding portion 56 is also deformed accordingly, and the center portion is deformed inward as indicated by the arrow B. The deformation of the holding portion 56 is performed by each of the elastic arms 5 integrally connected thereto.
7 and 58, the contact position between each of the elastic arms 57 and 58 and the post contact 60 is moved, and there is a problem that the contact stability between the two is impaired.

Here, if the vertical length of the elastic arms 57 and 58 is long, the deformation of the holding portion 56 is small and the influence on the contact stability is small. However, recently, in order to increase the mounting density of electronic components on a printed circuit board, the height of the electronic components has been required to be reduced, and the demand for a shunt connector has also been strongly reduced. In order to reduce the height of the shunt connector in response to such requirements, the vertical length of the elastic arm must be reduced. When such a low-profile shunt connector is attached to a post contact, the holding portion is likely to be deformed, the contact stability between the elastic arm and the post contact is impaired, and the possibility of poor contact is increased. There is.

The present invention has been made in view of such a problem.
It is an object of the present invention to provide a shunt connector having a configuration that does not impair contact stability between a contact of a shunt connector and a post contact even when the height of the shunt connector is reduced.

[0008]

In order to achieve the above object, the present invention provides a shunt connector having contacts arranged in a contact holding space of an insulating housing. The contact is made by integrally bending and forming the plate material, and the contact has a holding portion formed in a rectangular box shape having upper and lower openings with front and rear left and right side walls along four side surfaces in a contact holding space. The lower portion of the left and right sides of the front and rear side walls of the holding portion is formed by cutting out the lower portion on the left and right sides, respectively, extends toward the insertion hole on the lower surface of the insulating housing, and sandwiches the post contact inserted from the insertion hole. The pair of left and right elastic arms that come into contact with each other and the left and right side walls of the holding portion extend and connect to the center in the left and right direction. It is bent so as to cover the upper opening of the lateral middle portion of the molding, composed of a bridge portion to bridge between the front and rear side walls of the holder.

[0009]

When the shunt connector having such a structure is mounted on the post contact, the elastic elastic arm is pushed outward by the post contact, and the center of the holding portion receives a force for deforming inward accordingly. However, since the bridge portion that bridges between the front and rear walls is provided at the center of the holding portion, the bridge portion prevents the center of the holding portion from being deformed. Therefore, the deformation of the holding portion is suppressed, and the contact stability between the elastic arm and the post contact is maintained.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. First, a shunt connector configuration using the shunt connector 10 according to the present invention will be described with reference to FIG. In this configuration, the shunt connector 10 is detachable from the shunt header 5 surface-mounted on the printed circuit board 1. The shunt header 5
A post contact 6 made of a conductive material is held by a holding plate 7 made of an insulating material. The post contact 6 is L-shaped, and has a post portion 6a that stands vertically from the upper surface of the plate 7 and a mount portion 6b that extends horizontally on the lower surface side. The mount section 6b is soldered to the conductive pattern layer 2 of the printed board 1, and the shunt header 5 is surface-mounted on the printed board 1.

The shunt connector 10 is attached to and detached from the pair of posts 6a, and short-circuits the pair of posts 6a. As shown in FIGS. 1 to 4, the shunt connector 10 includes a housing 11 made of an insulating material and a contact 20 made of a conductive material held in the housing 11. The housing 11 has a substantially rectangular parallelepiped outer shape, and a substantially rectangular parallelepiped contact holding space 12 opened on the upper surface is formed therein. Further, a pair of left and right post insertion holes 13 opening from the left and right of the contact holding space 12 to the lower surface are formed on the bottom surface of the housing 11.

The contact 20 inserted and held in the contact holding space 12 is formed by bending a metal plate 20 'shown in FIG. 7 as shown in FIG. The metal plate 20 ′ is connected to the carrier 40 via the connecting portion 41, and the carrier 40 has such a metal plate 2.
0 'are continuously connected via the connection portions 41, respectively. The metal plate material 20 'is stamped and formed into a shape such that the contact 20 shown in FIG. Therefore, the contact 2 corresponding to each part of the contact 20 in the metal plate material 20 ′ is
The same number as each part of 0 is given. The connecting portion 41 is provided with a slit 41a. After the contact 20 is bent and formed, the contact 20 is separated from the carrier 40 at the slit 41a.

In the contact 20, left and right sides 21
The holding portion is formed by the first holding portion 21 having a horizontal cross section formed by bending a at a right angle and having a U-shape, and the second holding portion 23 formed by a wall surface connecting the front ends of the left and right side portions 21a. ing. For this reason, the holding section has a rectangular closed cross-sectional shape along the inner surface of the contact holding space 12, and the holding section is pressed into the contact insertion space 12. . Therefore, contact 2
This holding portion is located along the inner surface of the holding space 12 in a state where 0 is pressed into the contact holding space 12, and holds the contact 20 in this state.

The left and right side portions 21a of the first holding portion 21 extend downward, and a central portion thereof is cut in a U-shape as shown in the figure and is bent outward, so that it faces upward and outward. A protruding lance portion 22 is formed. On the other hand, the lance portion 22 in the contact holding space 12
A step portion 11a is formed on the inner side surface opposite to as shown in FIG. For this reason, when the contact 20 is inserted into the contact holding space 12, the lance portion 22 is pushed in while being elastically deformed inward. When the contact 20 is completely pushed in, the lance portion 22 expands outward and as shown in the drawing. Engages with the step 11a. As a result, the contact 20 is held while being inserted into the contact holding space 12.

As can be clearly seen from the state of the metal plate member 20 'in FIG. 7, the first holding portion 21 and the second holding portion 23 are integrally connected to each other at a central portion thereof by a connecting portion 24 having two openings 24a. ing. The connecting portion 24 connects the lower portions of the first and second holding portions 21 and 23 and is formed so as to be located along the bottom surface of the contact holding space 12. Further, the bridge portion 2 connected to the upper end of the second holding portion 23
5 is bent inward at a right angle from the second holding portion 23, and its tip is in contact with the upper inner surface of the first holding portion 21. The left and right sides 25a of the bridge portion 25 are bent downward, thereby increasing the rigidity of the bridge portion 25. The left and right sides 25a are slightly bent inward as shown in FIG. 2, and also serve as guides for post contacts inserted from the post insertion holes 13.

A pair of elastic arms 27 and 28 are provided on both left and right sides of the holding portion, respectively, and extend downwardly facing each other.
Are formed. These elastic arms 27 and 28 are bent into a curved shape that is convex toward the opposite side, and are located above a pair of left and right post insertion holes 13. Further, the lower ends (tips) 27a and 28a are located away from the inner side surface forming the contact holding space 12. In addition,
In this example, the most inwardly projecting portions of the elastic arms 27 and 28 are positioned as low as possible (tips), so that the lengths of the elastic arms 27 and 28 are made as long as possible. I have. A reinforcing bead 26 that is pressed from the outside and extends laterally is formed at the base of each of the elastic arms 27 and 28.

The shunt connector 10 configured as described above
Is attached to the post 6a of the shunt header 5, the elastic arms 27 and 28 are deformed so as to be pushed and spread by the post 6a, as shown in FIG. The deformation of the elastic arms 27 and 28 is caused by the first and second holding portions 2.
Also, the force acts to inwardly deform the central portions of the holding portions 21 and 23. However, both holding parts 21,
Since the bridge portion 25 is provided between the central portions of the 23, the bridge portion 25 prevents the inward deformation. For this reason, the contact stability of the elastic arms 27 and 28 is maintained.

The lower ends 27a and 28a of the elastic arms 27 and 28 abut on the inner side surface of the contact holding space 12 in a state where the elastic arms 27 and 28 are expanded by the post portion 6a.
This limits the amount of expansion of the elastic arms 27 and 28, and prevents the post 6a from being twisted and inserted obliquely. In addition, since the reaction force due to this contact acts as a contact pressure between the elastic arms 27 and 28 and the post portion 6a, a high contact pressure is obtained, and contact reliability is improved.

[0019]

In order to achieve the above object, in the present invention, a contact is made by integrally bending a plate of a predetermined shape made of a conductive material, and the contact is formed by four contacts in the contact holding space. A rectangular box-shaped holding portion having front, rear, left and right side walls along the side surface, and a left and right lower portion of the front and rear side wall of the holding portion are formed by cutting out lower portions on both right and left sides to face each other and to be insulated. A pair of left and right elastic arms extending toward the insertion hole on the lower surface of the housing, and extending so as to be connected to a center part in the left-right direction on one of the front and rear side walls of the holding part to cover an upper opening in the center part in the left-right direction of the holding part. And a bridge section that bridges between the front and rear side walls of the holding section. When the elastic contact clamps the post contact inserted from the hole and makes contact with it, the elastic contact is pushed outward by the post contact and receives the force to deform the center of the holding part inward. As
The bridge portion prevents the center of the holding portion from being deformed. Therefore, the deformation of the holding portion is suppressed, and the contact stability between the elastic arm and the post contact is maintained.

[Brief description of the drawings]

FIG. 1 is a plan view of a shunt connector according to the present invention.

FIG. 2 is a partial front sectional view of the shunt connector.

FIG. 3 is a cross-sectional view of the shunt connector taken along an arrow III-III.

FIG. 4 is a cross-sectional view of the shunt connector taken along arrow IV-IV.

FIG. 5 is a cross-sectional view showing a state where the shunt connector is mounted on a shunt header.

FIG. 6 is a perspective view showing a contact constituting the shunt connector.

FIG. 7 is a plan view showing the shape of a metal plate for forming the contact.

FIG. 8 is a perspective view showing a connector configuration using the shunt connector.

FIG. 9 is a plan view and a sectional view showing a conventional shunt connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed circuit board 5 Shunt header 6 Post contact 10 Shunt connector 11 Housing 20 Contact 21 and 23 Holding part 25 Bridge part 27 and 28 Elastic arm 40 Carrier

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Liu Yoshitoshi 510 Futako-ji Minamikoji, Takatsu-ku, Kawasaki City, Kanagawa Prefecture No. 3 Inoue Building Augat Co., Ltd. (56) References Real Opening 1-12-17881 (JP, U (58) Field surveyed (Int. Cl. ⁶ , DB name) H01R 31/08

Claims (1)

(57) [Scope of request for utility model registration] 1. An insulating housing having a contact holding space opened on the upper surface, a pair of left and right insertion holes opened on the lower surface from the contact holding space, and disposed in the insulating housing and inserted from the insertion hole. A shunt connector comprising a post contact to be contacted and a contact in contact with the post contact, wherein the contact is formed by integrally bending and forming a plate material of a predetermined shape made of a conductive material, and the front, rear, left and right along four side surfaces in the contact holding space. A holding portion formed in a rectangular box shape having a side wall and having an opening at the top and bottom; and lower portions on both right and left sides of the front and rear side walls of the holding portion are cut out and formed so as to face each other and extend toward the insertion hole. , A pair of right and left pairs that sandwich the post contact inserted from the insertion hole and make contact with the post contact. The elastic arm is extended and connected to the center part in the left-right direction of one of the front and rear side walls of the holding part, and is bent and formed so as to cover the upper opening of the center part in the left-right direction of the holding part. A shunt connector comprising a bridge portion for bridging.