JP2000294323A - Connector for board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To check incomplete attachment by providing a means for disenabling a male connector from fitting when attached to a wiring board incompletely. SOLUTION: In this connector for a board 1, binding grooves 6 are formed on both seidewalls 1a of a housing 1, an engagement recess 10 is formed on a wiring board 5, and the wiring board 5 on both sides of the fitting recess 10 is inserted into the binding grooves 6. And engaging protrusions 8 having tapered surfaces 12a with downward inclination in the inserting direction of the housing 1 is formed on the inner walls 6a of the binding grooves 6, locking nails 12 having tapered surface 12a opposite to the engaging protrusions 8 are formed on the wiring board 5 at both sides of the fitting recess 10, when the housing 1 inserted the engaging protrusions 8 interfere with the locking claws 12 and riding over the locking claws 12 by bending of the housing 1 for engaging the locking claws 12 to retain the housing 1 in the normal position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board connector to be mounted on an electronic circuit board, and more particularly to an improvement in a mounting structure of the board connector.

[0002]

2. Description of the Related Art Conventional bottom type board connector A
1 has a housing 1 and terminals 4 provided in the housing 1 as shown in FIG. 6, and is attached to the lower surface of the substrate 3 so as to match the rectangular opening 14 formed in the wiring substrate 5. Have been. The terminals 4 are bent upward through the bottom of the housing 1, protrude from the surface of the wiring board 5, are soldered 16 to the wiring board 5, and are soldered 18 to the fixing pins 17, thereby fixing the housing 1. keeping. The male connector 9 is fitted into the housing 1 through the opening 4 and connected to the terminal 4.

[0003]

A conventional board connector is formed by soldering 16, 1 by diagonally attaching the housing 1, or the like.
Even if the connector 8 is in an incomplete state, if the male connector 9 can be fitted, it may be shipped as it is and distributed in the market. In the case of such a product, when any external force is applied, the board connector A1 moves as shown in FIG. 7, and in the worst case, it may fall off the wiring board 5.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is possible to determine incomplete mounting by providing means for disabling the fitting of a male connector when the connector is incompletely mounted on a wiring board. It is an object of the present invention to provide a board connector as described above.

[0005]

According to a first aspect of the present invention, a coupling groove is formed on both side walls of a housing, a fitting recess is formed in a wiring board, and the coupling groove is formed in the coupling groove. A board connector having a structure in which the wiring board is inserted on both sides of the fitting recess, wherein an engagement projection having a tapered surface inclined downward in an insertion direction of the housing is formed on an inner wall of the coupling groove, A locking claw having a tapered surface in a direction opposite to that of the engagement protrusion is formed on the wiring board on both sides of the fitting recess, and when the housing is inserted, the engagement protrusion interferes with the engagement claw and the inner wall is bent. With this configuration, the locking claw is moved over and engaged with the locking claw to hold the housing at a proper position.

Therefore, according to the first aspect of the present invention, in the case of an incompletely mounted state in which the engaging projection and the locking claw interfere with each other, the housing is deformed and the male connector cannot be fitted. This indicates that the product is incompletely mounted, thereby preventing defective products from leaking to the market.

According to a second aspect of the present invention, there is provided the board connector according to the first aspect, wherein a slit is formed in an inner wall of the coupling groove.

[0008] Therefore, according to the second aspect of the invention, when the engaging projection is pressed by the locking claw of the wiring board, the inner wall of the coupling groove is easily deformed, and the operation of inserting and coupling the connector is facilitated.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a board connector according to an embodiment of the present invention.
6 and 7 having the same members or the same functions are denoted by the same reference numerals.

In the first embodiment shown in FIGS. 1, 2 and 3, the board connector A is a bottom-shaped housing 1.
And a terminal 4 provided in the housing 1. The male connector 9 is fitted into and joined from the upper opening a. The board connector A is fitted and fixed in a square fitting recess 10 formed in the wiring board 5 as described later.

Projections 2 and 3 are formed vertically on both side walls 1a in the longitudinal direction of the housing 1, and a coupling groove 6 is formed between the projections 2 and 3. Tapered surfaces 2a, 3a inclined toward the coupling groove 6 are formed at the entrances of the protrusions 2, 3. A holder 7 is formed on both side walls 1b in the lateral direction, and the terminal 4 is inserted through a hole 7a of the holder 7. The upper surface of the holder 7 and the lower protrusion 3 are flush with each other.

An engagement projection 8 projecting into the coupling groove 6 is formed on an inner wall 6a (a part of the side wall 1a) of the coupling groove 6.
As shown in FIG. 3, the shape of the engagement projection 8 is a triangular shape having a tapered surface 8a inclined downward toward the entrance (toward the holder 7).

A semicircular groove 11 into which the terminal 4 is fitted is formed on the front end face of the fitting recess 10 of the wiring board 5, and locking claws 12 are formed on inner surfaces on both sides of the fitting recess 10. The shape of the locking claw 12 is, as shown in FIGS.
0, that is, a tapered surface 12a inclined in the opposite direction to the tapered surface 8a of the engagement protrusion 8.
It has a triangular shape.

The housing 1 is moved in the direction of the arrow in FIGS. 1 and 2, and the coupling grooves 6 are fitted into the both sides of the fitting concave portion 10 and pushed. At this time, the engaging projection 8 and the locking claw 12 start to interfere with each other, but the contact between the tapered surfaces 8a and 12a
a is pushed and elastically deformed, the engaging projection 8 slides,
When it passes over the tapered surface 12a of the locking claw 12, the locking claw 1
2 and the engaging projection 8 are engaged (see FIG. 3).

The semicircular groove 11 matches with each terminal 4,
The front edge of the fitting recess 10 of the wiring board 5 is held by the holder 7. The terminal 4 is soldered to the circuit section 13 of the wiring board 5.

FIG. 4A shows a normal mounting state (the state shown in FIG. 3) in which the engaging projection 8 and the engaging claw 12 are engaged as described above. In this state, the male connector 9 is , Can be fitted. Further, when the male connector 9 is fitted, the housing 1 is prevented from being bent inward by the male connector 9, so that the proper mounting state is maintained and the housing 1 does not come off even when an external force is applied.

On the other hand, if the engaging projection 8 and the engaging claw 12 are not engaged, for example, if the engaging projection 8 and the engaging claw 12 are in an incompletely mounted state where they interfere with each other, FIG.
As shown in (b), the housing 1 is deformed inward, and the male connector 9 is in a state of being unable to be fitted, whereby it is found that the male connector 9 is incompletely mounted, and the defective product is prevented from flowing out to the market. Can be prevented. As described above, the mechanism of the engagement protrusion 8 and the locking claw 12 has both the function of enhancing the holding force by the engagement and the function of discriminating a defective product.

FIG. 5 shows a second embodiment of the present invention, in which slits 15 are formed in the inner wall 6a of the coupling groove 6 above and below the engagement projection 8. Accordingly, when the engaging projection 8 is pressed by the locking claw 12 of the wiring board 5, the inner wall 6a is easily deformed, and the operation of inserting the board connector A becomes easy and reliable.

[0019]

As described in detail above, according to the first aspect of the present invention, the engaging projection is formed on the inner wall of the coupling groove, and the locking claws are formed on both sides of the fitting concave portion of the wiring board. In addition, the board connector is held in a proper position by the engagement of the two, so that the board connector can be securely held and there is a possibility that the engaging projection and the locking claw interfere with each other. In the case of the completely mounted state, the housing is deformed and the male connector cannot be fitted, whereby it can be seen that the male connector is incompletely mounted and the defective product can be prevented from flowing out to the market.

According to the second aspect of the present invention, since the slit is formed in the inner wall of the coupling groove, in addition to the effect of the first aspect, the housing is easily deformed when the board connector is inserted. And the joining operation becomes easy and reliable.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a board connector of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a cross-sectional plan view of the mounted state of the board connector of the first embodiment.

4A is an operation explanatory diagram of a normal mounting state, and FIG. 4B is an operation explanatory diagram of an abnormal mounting state.

FIG. 5 is a side view of the second embodiment.

FIG. 6 is a cross-sectional view of a conventional board connector.

FIG. 7 is a cross-sectional view showing the operation of a conventional board connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 1a Side wall 4 Terminal 5 Wiring board 6 Coupling groove 6a Inner wall 8 Engagement protrusion 8a Tapered surface 10 Fitting concave part 12 Locking claw 12a Tapered surface 15 Slit A Board connector

Claims (2)

[Claims] 1. A connecting groove is formed on both side walls of a housing,
A board connector having a structure in which a fitting recess is formed in a wiring board, and the wiring board on both sides of the fitting recess is inserted into the coupling groove, wherein an inner wall of the coupling groove is inserted in a direction in which the housing is inserted. An engaging projection having a downwardly inclined tapered surface is formed, and a locking claw having a tapered surface in a direction opposite to the engaging projection is formed on the wiring substrate on both sides of the fitting concave portion, and the housing is inserted when the housing is inserted. A connector for a board, wherein an engaging projection interferes with a locking claw, gets over the locking claw by bending of the inner wall, engages with the locking claw, and holds the housing in a proper position. 2. The board connector according to claim 1, wherein a slit is formed in an inner wall of the coupling groove.