JP2000294312A - Structure for holding board connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance holding force with respect to a wiring board of a connector for a board when a counterpart connector is fitted to the connector for the board disposed on the wiring board. SOLUTION: A connector 37 for a board, in which a male terminal 43 is fixed to a wiring board 17 by soldering 45, abuts at a back surface 39c against a connector abutting portion 19a of a fixing plate 19 when the wiring board 17 is fixed to the fixing plate 19. The wiring board 17 and the fixing plate 19 fixed to each other are contained inside a meter case 15. In this state, when a counterpart female connector is fitted into the connector 37 for the board through a through hole 15a of the meter case 15 and another through hole 17b of the wiring board 17, the connector abutting portion 19a of the fixing plate 19 receives a load to be exerted on the connector 37 for the board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for holding a board connector mounted on a wiring board housed in a case.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view showing an example of a board connector 1. FIG.
FIG. 5 is a cross-sectional view showing a state where the camera is mounted on the camera. The housing 5 of the board connector 1 is formed with a fitting hole 5a into which the mating female connector 7 is fitted, and a plurality of male terminals 11 are accommodated in the fitting hole 5a. The male terminal 11 is connected to the housing 5
The wiring board 3 is bent and formed so as to have a fixing portion 11a made of solder 12 with respect to the wiring board 3 so as to protrude to the outside through the bottom portion 5b and protrude to the opening side of the fitting hole 5a.

[0003] As shown in FIG. 7, the above-mentioned board connector 1 has a fixing portion 11 a of the male terminal 11 inserted into a terminal insertion hole (not shown) of the wiring board 3, and is soldered onto a printed circuit of the wiring board 3. By soldering with the wiring 12, it is mounted on the wiring board 3. In this state, the mating female connector 7
It is fitted into the fitting hole 5a through the through hole 3a formed in the wiring board 3 from the side opposite to the board connector 1.

[0004]

However, in such a conventional board connector holding structure, since the board connector 1 is held on the wiring board 3 by soldering, the mating female connector is not provided. The load applied when fitting 7 puts a load on the soldering portion, which may cause cracks in the solder 12, or in the worst case, the board connector 1 may fall off the wiring board 3.

SUMMARY OF THE INVENTION It is an object of the present invention to increase a holding force of a board connector to a wiring board when a mating connector is fitted to the board connector mounted on the wiring board.

[0006]

In order to achieve the above object, according to the present invention, a wiring board housed and arranged on a bottom side of a case is disposed between the case and a fixing plate housed in the case. A board connector that penetrates the bottom of the case and is fitted with a mating connector is mounted on the fixed plate side of the wiring board, and the back surface of the board connector is the fixed plate. There is a configuration in contact with.

According to the board connector holding structure having such a configuration, when the mating connector is fitted to the board connector mounted on the wiring board, the back surface of the board connector abuts on the fixing plate. Therefore, the load applied to the board connector at the time of fitting is received by the fixing plate, and the burden on the mounting portion of the board connector to the wiring board is avoided.

According to a second aspect of the present invention, in the configuration of the first aspect of the invention, the built-in male terminal of the board connector is inserted into a terminal insertion hole of the wiring board and fixed by soldering.

According to the above structure, the load applied to the board connector at the time of mating of the mating connector is received by the fixing plate, so that the load on the soldering portion of the board connector to the wiring board is avoided.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the board connector and the fixing plate are mutually fitted between the board connector and the fixing plate while the board connector is correctly mounted on the wiring board. There is provided an erroneous assembly detection means that can be combined.

According to the above configuration, when the board connector is correctly mounted on the wiring board, the erroneous assembly detecting means is fitted with each other, and the wiring board can be mounted on the fixing plate. On the other hand, when the board connector is not properly mounted on the wiring board, the erroneous assembly detecting means does not fit each other, and it becomes impossible to mount the wiring board on the fixed plate.

According to a fourth aspect of the present invention, in the configuration of the third aspect, the erroneous assembly detecting means includes a convex portion provided on one side and a concave portion provided on the other side.

According to the above configuration, when the board connector is correctly mounted on the wiring board, the projections and the recesses are fitted to each other, and the board connector can be assembled to the fixing plate. .

[0014]

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

FIG. 1 is a sectional view of an automotive meter provided with a board connector holding structure according to an embodiment of the present invention. The meter case 15 has an opening on the front surface on the left side in the figure. The wiring board 17 and the fixing plate 19 assembled to each other are housed in the meter case 15 from the opening side. 1
The wiring board 17 is fixed between the bottom of the wiring board 5 and the bottom.

A dial 21 is disposed on the surface of the fixing plate 19 on the side opposite to the wiring board 17.
It is clamped and fixed by a facing 23 attached so as to cover the opening on the front side of the meter case 15. This look back 1
Further, a front glass 25 is mounted on the front side of 7.

On the fixed plate 19 side of the wiring board 17,
Movement 2 for rotating hands 27 on dial 21
9, an illumination bulb 31 for illuminating the pointer 27, and a bulb 33 for illuminating a design part for warning display and the like are respectively attached. Light from the illumination bulb 31 is sent to the hands 27 via a light guide plate 35 mounted on the back surface of the dial 21.

Further, a board connector 37 is mounted on the upper side of the wiring board 17 on the fixed plate 19 side in FIG. As shown in the perspective view of FIG.
Is provided with a fitting hole 39a in which a plurality of male terminals 43 are accommodated. The male terminal 43 penetrates through the bottom 39 b of the housing 39 and is exposed to the outside.
5 has a fixing portion 43a. However, the male terminal 43 is connected to the rear surface 39 of the housing 39.
Exposed to be flush with c, or bottom 39b
And shall not be projected from the back surface 39c.

The fixing portion 43a is inserted into the terminal insertion hole 17a of the wiring board 17 and the back side of the wiring board 17 (FIG. 1).
(The right side in the drawing) is soldered by the solder 45, whereby the board connector 37 is mounted on the wiring board 17. In this mounting state, the fitting hole 39 of the board connector 37 is
a is in a state aligned with the through hole 17b formed in the wiring board 17 and the through hole 15a formed in the meter case 15, and the mating female connector 41 fits into the fitting hole 39a through these through holes 15a and 17b. Is done.

The fixing plate 19 has a connector abutment portion 19a with which the back surface 39c of the housing 39 of the board connector 37 abuts. Further, as shown in FIG. 2, an I-shaped protrusion 39d and a T-shaped protrusion 39e are formed on the back surface 39c of the housing 39. The connector abutment portion 19a of the fixing plate 19 corresponding to each of these convex portions 39d and 39e has I
A U-shaped recess 19b and a T-shaped recess 19c are formed respectively.

The convex portions 39d and 39e and the concave portion 19
b and 19c constitute an erroneous assembly detecting means. When the board connector 37 is correctly mounted on the wiring board 15, the projection 39d is in the recess 19b and the projection 39
e fits into the recesses 19c, and the back surface 39c abuts on the connector abutting surface 19a in close contact with the connector abutting surface 19a, as shown in FIG. On the other hand, when the board connector 37 is not properly mounted on the wiring board 15, the protrusions 39d, 39e
Do not fit into the recesses 19b and 19c, respectively,
Also, the wiring board 17 does not abut against the connector abutting surface 19a in a close contact state, so that it is impossible to assemble the wiring board 17 to the fixing plate 19.

Next, the operation will be described. Board connector 3
7 is correctly mounted on the wiring board 17, as shown in FIG.
9c and the back surface 39c is the connector contact surface 1
9a in close contact.

In this state, when the mating female connector 41 is fitted in the fitting hole 39a of the board connector 37 through the through hole 15a of the meter case 15 and the through hole 17b of the wiring board 17, the board connector 37 is Since the housing 39 is in contact with the connector abutment 19a of the fixing plate 19, the applied load is received by the connector abutment 19a. For this reason, the load at the time of the fitting is not applied to the soldering portion between the fixing portion 43a of the male terminal 43 and the wiring board 17, so that the occurrence of cracks in the solder 45 is avoided, and the wiring board of the board connector 37 Also, dropout from 17 is prevented.

Also, when assembling the wiring board 17 to the fixing plate 19, the protrusions 39 d on the board connector 37 side,
By fitting 39e into recesses 19b and 19c on the fixing plate 19 side, both of them are positioned, and the assembling work is reliably performed.

FIG. 4 shows a case where the board connector 37 is mounted in a state of being inclined with respect to the wiring board 17. In such a case, when the wiring board 17 is assembled to the fixing plate 19, FIG. And the projections 39d and 39e are
9b and 19c do not fit sufficiently.

In the case where the number of terminal insertion holes 17a on the wiring board 17 side is not equal to the number of the male terminals 43 of the board connector 37 but formed in large numbers, the board connector 37 is 17 or a board connector 3 as shown in FIG.
7 is expected to be mounted at a position where the direction of 7 is reversed (a position where the convex portion 39d and the convex portion 39e are interchanged),
Even in such a case, the convex portions 39d and 39e are replaced with the concave portions 19b,
19c does not fit.

As described above, when the board connector 37 is not properly mounted on the wiring board 17, the wiring board 17 cannot be assembled to the fixing plate 19,
In the state where the board connector 37 is not properly mounted on the wiring board 17, erroneous assembly can be prevented.

[0028]

As described above, according to the first aspect of the present invention, when the mating connector is fitted to the board connector mounted on the wiring board, the back surface of the board connector is fixed. As a result, the load applied to the board connector at the time of fitting is received by the fixing plate, and the load applied to the mounting portion of the board connector to the wiring board can be avoided.

According to the second aspect of the invention, when the mating connector is fitted to the board connector, the load applied to the board connector is not applied to the soldering portion of the board connector to the wiring board. Thus, cracks in the solder can be prevented, and dropping of the board connector from the wiring board can be prevented.

According to the third aspect of the present invention, between the back surface of the board connector and the abutting surface of the fixing plate, an erroneous assembly detection that can be fitted in a state where the board connector is correctly mounted on the wiring board. Since the means is provided, it is possible to prevent erroneous assembling of the wiring board to the fixing plate when the board connector is not properly mounted on the wiring board.

According to the fourth aspect of the present invention, when the board connector is correctly mounted on the wiring board, the projections and the recesses are fitted and the wiring board can be assembled to the fixing plate. If the connector is not correctly mounted on the wiring board, the projections and the recesses do not fit together, so that erroneous assembly of the wiring board on the fixing plate can be prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an automotive meter provided with a board connector holding structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of a board connector used in the holding structure of FIG. 1;

FIG. 3 is a cross-sectional view showing an assembled state of the wiring board to a fixing plate in a state where the board connector is correctly mounted on the wiring board in the holding structure of FIG. 1;

FIG. 4 is a cross-sectional view showing an assembled state of the wiring board to a fixing plate in a state in which a gap is generated between the board connector and the wiring board in the holding structure of FIG.

FIG. 5 is a cross-sectional view of the holding structure of FIG. 1, showing a state in which the wiring board is attached to the fixing plate in a state where the board connector is not correctly mounted because the direction of the wiring board is reversed.

FIG. 6 is a perspective view of a conventional board connector.

7 is a cross-sectional view showing a state where the board connector of FIG. 6 is mounted on a wiring board.

[Explanation of symbols]

 15 Meter Case (Case) 17 Wiring Board 17a Terminal Insertion Hole 19 Fixing Plate 19b, 19c Depression (Error Assembly Detection Means) 37 Board Connector 39c Back 39d, 39e Projection (Error Assembly Detection Means) 41 Mating Female Connector (Mating connector) 43 Male terminal

Claims (4)

[Claims] 1. A wiring board housed and arranged on the bottom side of a case is sandwiched and fixed between the case and a fixed plate housed in the case, and the case is fixed to the fixed plate side of the wiring board. A connector for a board to which a mating connector is fitted through the bottom of the board connector, and a back surface of the board connector is in contact with the fixing plate. 2. The holding structure for a board connector according to claim 1, wherein the built-in male terminal of the board connector is inserted into a terminal insertion hole of the wiring board and fixed by soldering. 3. An erroneous assembly detecting means provided between the board connector and the fixing plate and capable of fitting with each other in a state where the board connector is correctly mounted on the wiring board. A holding structure for a board connector according to claim 1. 4. The board connector holding structure according to claim 3, wherein the erroneous assembly detecting means is constituted by a convex portion provided on one side and a concave portion provided on the other side.