JP2006100183A - Joint connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint connector with a simple structure, realized in cost reduction in which a cover is eliminated while breakage of the housing during transportation is also eliminated. <P>SOLUTION: The joint connector has a plurality of terminal fittings 2 housed in a housing 1 and a bus bar 3 which engages and contacts the terminal fittings 2 in the housing 1 and makes each terminal fitting 2 into electrically conductive state is inserted into the housing 1. An insertion hole 4 is formed at one end side of the housing 1 on which the bus bar 3 is inserted, the tip part 3A of the bus bar 3 is formed in a shape for engaging corresponding to the tip shape of each terminal fitting 2, and an insulator 5 is provided at the base part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a joint connector in which a plurality of terminal fittings are accommodated in a housing and are electrically connected to each other via a bus bar.

As a conventional joint connector, a cover that can be opened and closed is attached to the housing, a plurality of terminal fittings are accommodated in the housing, and joint terminals (bus bars) are inserted into the housing from the cover side to Something known to achieve continuity was known. The cover covers the exposed part of the rear surface of the joint terminal (bus bar). In addition, a plurality of retaining claws that can be attached to the inner surface of the cover with the joint terminal (bus bar) being secured are formed, and the joint terminal is integrated with the cover by these claws to facilitate maintenance work. Are known. The joint terminal (bus bar) used at this time is formed of a conductive metal plate, and is integrally formed from a connecting plate and a total of four tab portions bent forward at the lower end of the connecting plate and extending forward. The part is inserted into the terminal fitting (see Patent Document 1).
JP 2002-352926 A (2nd and 3rd pages, FIG. 1)

  In the device disclosed in Patent Document 1, since it is necessary to provide a cover on the housing, and the bus bar is covered with this cover, the number of parts is increased and the cost is increased. In addition, in order to link the cover and the bus bar, each structure is complicated.

  Therefore, the present invention eliminates the cover to reduce the number of parts, and further, electrically insulates the base end portion of the bus bar to prevent short circuit due to contact between other members and the bus bar, thereby reducing the cost as a whole. An object is to provide a joint connector.

  In order to achieve the above-described object, the present invention inserts a bus bar into a housing that houses a plurality of terminal fittings in a housing, engages and contacts the terminal fittings in the housing, and electrically connects each terminal fitting. In the joint connector, an insertion port is formed on one end of the housing on the side where the bus bar is inserted, and the distal end of the bus bar is formed in a shape that engages with the distal end shape of each terminal fitting, and the proximal end An insulator is provided in the part.

  The present invention relates to a joint connector in which a plurality of terminal fittings are housed in a housing, and bus bars that engage and contact the terminal fittings in the housing and electrically connect each terminal fitting to the housing are inserted into the housing. Since an insertion port is formed on one end of the housing on the side to be inserted, the distal end portion of the bus bar is formed in a shape that engages with the distal end shape of each terminal fitting, and an insulator is provided at the proximal end portion. Thus, there is no need to provide a conventional cover on the housing, the number of parts is reduced, and the cost can be reduced. In the present invention, an insulator is provided at the base end portion of the bus bar without providing a cover to cover the bus bar, so that even if the bus bar is simply inserted into one end side of the housing, There is also no risk of short circuiting with the member. Further, the structure of the bus bar and the structure of the housing are simplified, and the whole can be manufactured at low cost.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a perspective view before housing the terminal fitting 2 and the bus bar 3 in the housing 1, that is, before assembly. The plurality of terminal fittings 2 (four in this example) are arranged from the one end opening side of the housing 1 to the housing 1. The bus bar 3 that is housed inside and engages and comes into contact with the housed terminal fitting 2 to electrically connect each terminal fitting 2 is inserted from the insertion port 4 on the other end side of the housing 1. The front end portion 3A of the bus bar 3 is formed in a shape that engages with the front end shape of each terminal fitting 2, and this front end portion 3A is engaged with and brought into contact with the contact portion 2A of the terminal fitting 2. An insulator 5 is provided at the base end of the bus bar 3. An electric wire 6 is held on the terminal fitting 2. Both the terminal fitting 2 and the bus bar 3 are made of a conductive material, and the comb-shaped tip 3 </ b> A of the bus bar 3 is fitted into the contact portion 2 </ b> A formed of a square hole of the terminal fitting 2.

  FIG. 2 is a cross-sectional view of the terminal fitting 2 and the bus bar 3 assembled in the housing 1. The terminal fitting 2 is inserted into the positioning hole 8 from the insertion port 7 of the housing 1 and the terminal fitting 2 is positioned in the housing 1. To do. The electric wire 6 is held by a barrel portion 9 formed on the terminal fitting 2. The bus bar 3 is inserted from the insertion port 4 of the housing 1, and the tip 3 </ b> A engages and contacts the contact 2 </ b> A of each terminal fitting 2. The insulator 5 of the bus bar 3 can be formed by coating the base end portion of the bus bar 3 with an elastic material such as rubber or resin. In this case, the insertion opening is formed by the frictional force of the elastic material such as rubber or resin. The bus bar 3 can be locked to the inner surface of 4. The insulator 5 may be formed of a coating layer coated with another insulating material, for example, insulating ink. The insulator 5 is provided by inserting the bus bar 3 into the mold and molding the bus bar 3 to cover the base end portion with the material of the insulator 5 injected into the mold. You can also. Insert molding uses a vulcanization mold when the material is rubber, and an injection mold when the material is resin.

  FIG. 3 shows an example in which a protrusion 5A is formed on the insulator 5, and the protrusion 5A engages with a recess 4A formed on the inner surface of the insertion port 4 to form a locking portion for uneven engagement. It is also possible to have irregularities (such as hemispheres) other than the irregularities of such a shape, and it is also possible to employ a lock part other than irregularities.

  FIG. 4 shows an example in which the shape of the terminal fitting 2 is changed and the shape of the bus bar 3 is also changed. The distal end shape of the terminal fitting 2 is made up of a pair of spring pieces 2B and 2C that are pressed against each other from above and below, the distal end portion 3A of the bus bar 3 is formed in a flat plate shape, and the distal end portion 3A of the bus bar 3 is connected to the terminal fitting. It inserts between each 2 spring pieces 2B and 2C. The spring pieces 2B and 2C are formed by folding back the two plate-like tips from the outside to the inside in a substantially U shape. The bus bar 3 is formed in a flat plate shape with a conductive metal plate, and the base end side is covered with an insulator such as a rubber material and an insulator 5 is provided. Although the front end portion 3A of the bus bar 3 shown in the embodiment of FIG. 1 is formed in a comb shape, the manufacturing cost of the bus bar 3 can be significantly reduced by forming it in a flat plate shape as shown in FIG. Can do.

The perspective view before an assembly | attachment. Sectional drawing after an assembly | attachment. Sectional drawing which shows an example of the locking means of the insulator of a bus bar, and the insertion port of a housing. The perspective view which shows the example of another terminal metal fitting and a bus bar.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 2 Terminal metal fitting 3 Bus bar 3A Tip part 4 Insertion slot 5 Insulator

Claims (4)

In a joint connector in which a plurality of terminal fittings are housed in a housing, and a bus bar that engages and contacts the terminal fittings in the housing and electrically connects each terminal fitting to the housing,
Forming an insertion port on one end of the housing on the side where the bus bar is inserted;
A joint connector characterized in that the front end of the bus bar is formed in a shape that engages with the front end of each terminal fitting, and an insulator is provided at the base end.   The joint connector according to claim 1, wherein a concave and convex engagement lock portion is provided between the insulator of the bus bar and the inside of the insertion opening of the housing.   The tip of the terminal fitting is made up of a pair of spring pieces that come into contact with each other from above and below, the tip of the bus bar is formed into a flat plate shape, and the end of the bus bar is inserted between the spring pieces of the terminal fitting. The joint connector according to claim 1, wherein the joint connector is formed.   2. The insulator is provided by inserting a bus bar into a mold and molding the bus bar so as to cover a base end portion of the bus bar with an insulator material injected into the mold. 4. The joint connector according to any one of 3 above.

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