JPH0449830Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a busbar fixing structure that prevents play and deformation of busbars used for electrical wiring in automobiles, etc., and improves the reliability of electrical connections. .

[Conventional technology]

It is a perspective view showing the conventional bus bar A' of FIG. 4, in which one side of the bus bar is formed into a narrow band shape, and a plurality of male tab terminals 4 (three each in the figure) are vertically arranged on both sides of the bus bar. It has been done.

Lock fitting holes 5 are formed near the base ends of the front and rear male tab terminals 4a, 4b, respectively.

The other side of the bus bar is formed into a wide band shape, and a circular connection part 3 is formed at the end thereof, and a connection hole 8 is bored in the center thereof.

FIG. 5 is a perspective view showing the main parts of a connector housing B' made of synthetic resin into which the bus bar A' is inserted, and a protruding slit part 10 for inserting a male tab terminal is also provided at the upper part of the housing body 9. The vicinity of both ends of the slit portion 10 are bulged outward, and a locking projection 11 corresponding to the locking fitting hole 5 of the male tab terminal 4 is provided inside the slit portion 10.

FIG. 6 is a perspective view showing a state in which the locking fitting hole 5 of the busbar A' is fitted into the locking protrusion 11 of the connector housing B' and the busbar A' is assembled and fixed to the connector housing B'. In this state, a bolt or the like is passed through the connection hole 8 of the bus bar A' to fix the connection part 3 to a mating connection part (not shown).

However, at this time, a bending moment acts on the boundary between the narrow part 1 and the wide part 3'' (neck part 24) of the busbar A' as a fulcrum, which deforms the neck part 24, making the installation work difficult. After that there is a bus bar
Since the lock portions 5 and 11 of A' have backlash, there have been cases where the fitting of the terminal portion 4 has loosened due to vibration during use, or the terminal portion 4 has worn out, resulting in poor contact.

Another disadvantage is that the neck portion 24 of the bus bar A' is susceptible to fatigue damage due to stress concentration caused by vibration.

[The problem that the idea aims to solve]

In view of the above-mentioned points, the present invention reduces the backlash after the busbar is installed, and also prevents problems such as deformation and breakage when an external force is applied to the connection part provided on one side of the busbar, and enables electrical connection. The purpose is to provide a busbar fixing structure with improved reliability.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a terminal section of a bus bar in which a plurality of branching terminal sections are vertically provided on one side of the strip section and a connecting section is extended on the other side of the strip section. In the structure to be fitted into the connector housing, a widened part wider than the belt part is connected to the middle part of the band part, a locking hole is provided in the center of the widened part, and a locking hole is provided in the center of the widened part. A structure is adopted in which projecting edges are vertically provided on both sides of the connector housing, and the connector housing is provided with an engaging protrusion for the locking hole and an engaging groove for the projecting edge.

[Effect]

When assembling bus bar A to connector housing B, the terminal section 4 provided on one side of bus bar A must be
At the same time, insert the
The locking hole 7 of the bus bar A is fitted into the engagement protrusion 13 of the connector housing B, and the projecting edge 6 of the bus bar A is engaged with the engagement groove 15 of the connector housing B.

Then, the connection part 3 provided on the other side of the busbar A is connected and fixed to the other side, but in this state, the connection part 3 provided on the other side of the busbar A is
The projecting edge 6 of the connector housing B and the engagement groove 15 of the connector housing B
The horizontal play and acting force of the bus bar A are regulated by the engagement, and the vertical play and acting force are further regulated by the engagement of the engagement protrusion 13 and the locking hole 7.

This engagement protrusion 13 and the locking hole 7
The fitting improves the holding force of the busbar A and also locks the widened part 2 of the busbar A, so it reduces the moment acting on the busbar A with respect to the external force applied to the connection part 3, and also improves the holding force of the busbar A. It is possible to prevent deformation by preventing the influence of external force from reaching the main parts of the busbars such as No.4.

〔Example〕

FIG. 1 is a perspective view showing a busbar A in the busbar fixing structure of the present invention, and as in the conventional case, a branch terminal having a locking fitting hole 5 in one band portion 1 (main portion) of the busbar A. A plurality of male tab terminals 4 as a part are vertically provided, and a circular connecting part 3 is formed on the other side, and a connecting hole 8 is provided in the center of the connecting part 3.

Further, widened portions 2 are formed in the middle of the bus bar by sticking out on both sides to be wider than the band portions 1 and 3' on one side and the other, and projecting edge portions 6 are vertically provided on both sides of the widened portions.

Further, a rectangular locking hole 7 is bored in the center of the widened portion 2.

FIG. 2 is a perspective view showing the connector housing B in the fixing structure of the present invention. As in the conventional case, a protruding slit portion 10 for inserting a male tab terminal is provided at the upper part of the housing body 9, and both ends of the slit portion 10 are provided. Each proximal portion is bulged outward, and a locking protrusion 11 corresponding to the locking fitting hole 5 of the male tab terminal 4 is provided on the inner side thereof.

The outer wall 12 of the protruding slit portion 10 is expanded and extended in the longitudinal direction to form the backlash prevention rib 16 to an appropriate length.

A protruding edge engagement groove 15 is formed on the inner peripheral edge of the rattle prevention rib 16, and the rattle prevention substrate part 17 is placed inward of the engagement groove 15 so that the height of the rattle prevention rib 16 is higher than that of the bus bar A. The connection is made as low as the thickness of the plate.

Further, an engaging protrusion 13 is provided protrudingly on the surface of the backlash-preventing substrate portion 17.

The engaging protrusion 13 has an umbrella-shaped flexible head 14, and the diameter of the head 14 is set to be slightly larger than the inner width of the locking hole 7.

FIG. 3 is a perspective view showing a state in which the bus bar A is assembled and fixed to the connector housing B.

In this state, the projecting edge portion 6 of the bus bar A engages with the projecting edge engagement groove 15 of the connector housing B, and the bus bar A The horizontal play and acting force are regulated.

Further, the surface 19 of the intermediate portion 2 of the bus bar A is vertically perpendicular to the lower surface 18 of the head of the engaged protrusion 13, and the back surface 20 of the intermediate portion 2 is perpendicular to the surface 22 of the backlash prevention substrate portion 17. Directional play and acting force are regulated.

Note that another connector housing (not shown) is fitted into the connector housing B shown in FIG. 3 from the lower side in the figure to form a connector.

[Effect of idea]

Since the present invention eliminates the looseness after the bus bar and connector housing are assembled as described above, wear and tear of the terminal portion due to vibration and the resulting electrical contact failure are prevented when the bus bar and the connector housing are installed in a vehicle or the like.

Furthermore, since the external force applied to the connection part is not transmitted to the terminals or main parts of the busbar, the busbar can be protected from the influence of external force, and the reliability of the electrical connection is greatly improved because the busbar does not come off. .

Furthermore, since the bus bar does not deform when attached to a vehicle or the like, work efficiency is improved and attachment errors are eliminated, which increases manufacturing profits.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a bus bar in the bus bar fixing structure of the present invention, Fig. 2 is a perspective view showing a connector housing in the bus bar fixing structure of the present invention, and Fig. 3 is a perspective view showing the bus bar fixing structure of the present invention. FIG. 4 is a perspective view showing a conventional bus bar, FIG. 5 is a perspective view showing a conventional connector housing, and FIG. 6 is a perspective view showing a conventional bus bar fixing structure. A... Bus bar, B... Connector housing,
2... Widening part, 3... Connection part, 4... Terminal part, 6
... Projection edge, 7 ... Locking hole, 13 ... Engagement protrusion, 15 ... Projection engagement groove.

Claims (1)

[Scope of utility model registration request] A plurality of branch terminals are installed vertically on one side of the band,
In the structure in which the terminal portion of the bus bar is fitted into the connector housing, the terminal portion of the bus bar is formed by extending the connecting portion to the other side of the band portion, and the widened portion wider than the band portion is connected to the intermediate portion of the band portion. A locking hole is provided in the center of the widened portion, projecting edges are provided vertically on both sides of the widened portion, and the connector housing has an engaging protrusion for the locking hole, and a locking hole is provided in the center of the widened portion. A bus bar fixing structure comprising an engagement groove for a projecting edge.