JPH05190231A - Fitting/removing structure of connector housing - Google Patents

Abstract

PURPOSE:To enable the removal of a connector housing without using a special tool and prevent the mounting of an electrical insulating plate from being forgotten. CONSTITUTION:In the fitting/removing structure of a connector housing engagedly fitted to a connector fixing bar 14 fixed onto a main distributing board 11 with an electrical insulating plate 5 interposed in between, flanges 3a provided at both side ends of the connector housing 3 are provided with a pair of bar like fitting legs 3c in the separated state. This bar like fitting leg 3c is formed of a locking claw 3b-1 to be engaged with the engaging hole 14c of the connector fixing bar 14, and a stopper part 3b-2 further extended integrally from the locking claw 3b-1 so as to come in colliding contact with the main distributing board surface through the electrical insulating plate 5. Or there are further fixedly provided a shaft part 3c-3 pivotally fixed between this pair of fitting legs 3b, a grip part 3c-2 provided at one end of the shaft part 3c-3, and a rotating cam 3c-1 at the other end. There is also provided a lock release means 3c for releasing the engagement between the locking claw 3b-1 and the connector fixing bar 14 by turning the grip part 3c-2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector housing attachment / detachment structure, and more particularly, to a press-fit terminal pin (press) of a mother wiring board attached to the back of a shelf in which circuit board packages are arranged and housed in an electronic exchange or the like. The fit pin group forms a male connector by inserting the connector housing. The present invention relates to a structure for attaching / detaching the connector housing and a structure for preventing forgetting to mount an electric insulating plate inserted between a connector fixing bar for fixing the connector housing and a mother wiring board.

[0002]

2. Description of the Related Art Conventionally, as shown in a rear perspective view of FIG. 9, a shelf (not shown) in which circuit board packages 16 are arranged and housed has a mother wiring board 11 attached to the rear surface thereof.
A plurality of press-fitting terminal pin groups 12 for connecting the connectors 17a of a plurality of inter-device connecting cables 17 are arranged and implanted, and a connector housing 13 is inserted into the press-fitting terminal pin group 12 to hold and guide and a mother wiring board. A male-type connector for holding a connector 17a of an inter-device connection cable 17 to be connected by being engaged with a connector fixing bar 14 screwed with an electric insulating plate 15 on top of 11 is provided.

The connector housing 13 is provided with flanges 13a at both ends in the longitudinal direction as shown in the side sectional views of FIGS. 10 (a) and 10 (b) and the sectional view taken along the line BB. A pair of rod-shaped locking claws 13b, which face each other inward, are integrally projected in the mounting direction.

To mount the connector housing, a connector fixing bar 14 (a perspective view of a single unit is shown in FIG. 11, 14b is attached to the mother wiring board 11) is shown in FIG. The locking claw 13b is spring-deformed by pushing the locking claw 13b into the mounting hole) and the spring repulsion causes the engaging hole 14a.
Is fixed to the mother wiring board 11 by standoffs from the surface of the mother wiring board 11.

To remove the connector housing, a pair of locking claws 13b are opened by using a special tool (not shown).
The b and the engaging hole 14a of the connector fixing bar 14 are disengaged and pulled out.

The connector fixing bar 14 and the mother wiring board 11
An electric insulating plate 15 is inserted between the wiring pattern (not shown) and the wiring pattern (not shown).

[0007]

However, according to such a detachable structure as described above, when the connector housings are arranged in rows and columns, the space between the connector housings becomes narrow and it is difficult to insert the special tool, and the special tool is brought from the storage location. There was a problem that maintenance and workability were poor because it was returned or returned.

Further, according to the mounting structure of the electric insulating plate, the locking claw 13b of the connector housing 13 has the electric insulating plate as shown in FIG. Since it can be locked to the connector fixing bar 14 even if 15 is not inserted, forget to insert the electrical insulating plate 15 or overlook or forget the electrical insulating plate 15 by visual inspection after assembly. There was a problem that even without the electric insulating plate 15, the user did not notice it and caused a short circuit failure after assembly.

In view of the above problems, it is an object of the present invention to provide a connector housing attachment / detachment structure which can be removed without using a special tool and which can prevent forgetting to mount an electrical insulating plate.

[0010]

In order to achieve the above object, in the connector housing attaching / detaching structure of the present invention, the connector housing is integrally provided on flanges provided at both ends in the longitudinal direction so as to integrally project in the attaching direction. It comprises a pair of rod-shaped mounting legs, each of which is composed of an opposed locking claw and a stopper part which extends further integrally from the locking claw, passes through the hole of the electrical insulating plate and abuts against the mother wiring board surface. Alternatively, further, a shaft portion pivotally mounted between the pair of mounting feet, a knob portion at one end of the shaft portion, and a rotating cam at the other end are fixed, respectively, and the knob portion is turned to rotate the locking claw and the connector. A lock releasing means for releasing the engagement with the fixed bar is provided.

[0011]

With the thickness of the electrical insulating plate included in the difference between the height of the stopper to be attached and the height of the locking position of the connector housing based on the mounting surface of the connector housing, the thickness of the connector housing is reduced. When attached, if the electrical insulating plate is inserted, the stopper can abut against the mother wiring board and be normally locked, but if it is not inserted,
Since the connector fixing bar sinks by the thickness of the electrical insulation plate,
Since the locking claws of the connector housing do not reach the locking position, the connector housing cannot be locked and it is possible to immediately know whether or not the electrical insulating plate is mounted.

Further, in the case where the locking releasing means is further provided, the turning cam is rotated by turning the knob portion of the locking releasing means with a fingertip, and the mounting foot is spring-deformed by the turning cam so that both locking claws are engaged. The engagement with the connector fixing bar can be released.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The gist of the present invention will be described in detail below with reference to the embodiments shown in the drawings. The same parts and parts as in the conventional case are designated by the same reference numerals.

The structure for attaching and detaching the connector housing is shown in FIG.
As shown in the side sectional view of the main part of (b) and the sectional view taken along the line AA, an inter-device cable for holding and guiding the press-fitting terminal pin group 12 implanted in the mother wiring board 11 on the back of the shelf. Connector housing 3 holding the connector (not shown) is inserted into the press-fitting terminal pin group 12 and the mother wiring board 11 is previously inserted with the electrical insulating plate 5 between the mother wiring board 11 and the sheet metal is bent into a U-shape. Then, the connector fixing bar 14 having the engaging hole 14a is screwed and attached. The connector housing 3 is provided with flanges 3a at both ends in the longitudinal direction, and the flanges 3a integrally project a pair of locking claws 3b-1 facing each other inward in the mounting direction, and are formed in the engaging holes 14a of the connector fixing bar 14. The structure of locking, standoff from the surface of the mother wiring board 11 and fixing is the same as the conventional one.

However, in the embodiment of the present invention, FIG.
As shown in the exploded perspective view of the main part of the connector housing and its assembled perspective view in FIG. 3, the connector housing 3 is integrally projecting in the attachment direction on the flanges 3a provided at both ends in the longitudinal direction, and the connector housing 3 faces the above-mentioned action. Locking claw 3b-1 and its locking claw
3b-1 further includes a pair of rod-shaped mounting legs 3b, which are integrally extended and extend through the electric insulating plate 5 to come into contact with the surface of the mother wiring board 11 and a stopper portion 3b-2. That is, the stopper portion 3b-2 passes through the hole 5a formed in the electric insulating plate 5 and is just on the surface of the mother wiring board 11.
When hitting, the locking claws 3b-1 are engaged holes in the connector fixing bar 14.
It is provided so as to be locked to the inner surface of the edge of 14a.

Furthermore, the connector housing 3 is shown in FIG.
As shown in FIG. 3, locking release means 3c is pivotally attached to both flanges 3a. That is, this unlocking means 3c is
A shaft portion 3c-3 pivotally mounted between 3b, a knob portion 3c-2 at one end of the shaft portion 3c-3, and a rotating cam 3c-1 at the other end are fixed, and the knob portion 3c-2 is fixed. By turning, the locking claw 3b-1 and the connector fixing bar 14 are pivotally attached so as to disengage from each other. Knob part 3c-2
Is equipped with a detent claw 3c-2a in one character. Rotating cam 3c
-1 is an elliptical plate with both end faces in the major axis direction flattened, the distance between the end faces is set to be larger than the inner dimension between the pair of mounting feet 3b, and the knob 3c-2 is turned to rotate the pair of mounting feet 3b. Try to open the space between. The flange 3a is provided with a shaft hole 3a-1 for pivotally mounting the shaft portion 3c-3 of the unlocking means 3c, and the detent claw 3c-2a of the knob portion 3c-2 is inserted into the edge of the shaft hole 3a-1. A detent cross groove 3a-2 that engages with each other is engraved. 3d is knob 3c
It is a spring pin that fixes -2 to the shaft part 3c-3.

As shown in the side sectional view of the main part showing the detached state of the connector housing of FIG. 4, this unlocking means rotates the knob portion 3c-2 with a fingertip and a pair of locking cams 3c-1 at the tip end. nail
By pushing open 3b-1, the engagement between the locking claw 3b-1 and the engaging hole 14a of the connector fixing bar 14 is released. Therefore, as shown in FIG. 3, the engraving direction of the flange non-rotating cross groove 3a-2 is made to coincide with the direction of releasing this engagement, and the knob portion 3c-2 is set in two directions perpendicular to the non-rotating cross groove 3a-2. Rotating cam by doing
3c-1 can be held in the disengaged state and the engaged state.

As described above, by providing the unlocking means in the connector housing, the knob portion attached to the connector housing itself can be immediately turned with a fingertip without using a special tool. The connector housing can be easily removed from the connector fixing bar by releasing the engagement with. Also, the connector housing can be easily attached as in the past by pushing. Therefore, it is not necessary to prepare and store a special tool.

Further, by providing a stopper portion in which the locking claw is integrally extended, when the connector housing 3 is attached, as shown in the side sectional view of the main portion of FIG. If the insulating plate 5 is not inserted, the connector fixing bar 14 sinks by the thickness of the electrical insulating plate 5,
Since the locking claw 3b-1 of the connector housing 3 does not reach the locking position, the locking claw 3b-1 cannot be engaged with the engaging hole 14a of the connector fixing bar 14, and the presence / absence of mounting of the electrical insulating plate 5 is immediately known. be able to.

Although the locking claws of the connector housing described above are provided so as to face each other inward, FIG.
As shown in the side cross-sectional views of the essential parts of another embodiment of (a) and (b) and the side cross-sectional view showing the detached state of the connector housing 3,
That is, 31 mounting feet 3b, that is, locking claws 31b-1 of 31b may be provided so as to project outward from each other and locked in the engaging hole 14a of the connector fixing bar 14. In that case, as shown in FIGS. 6 and 7, the unlocking means 3c, that is, 31c, is the rotating cam 3c-1, that is, 31c-1 is the arm having the engaging claw 31b-1 at the tip. To the protruding shape, and its engaging claw 31b-1 as shown in FIG.
As shown in FIG. 6 (b), the knob 31c-2 is provided by projecting the receiving claw 31b-3 for hooking on the inside of the pair of mounting feet 31b.
By turning the receiving claw 31b-3 to narrow the gap between the mounting legs 31b, the engagement claw 31b-1 and the engaging hole 14a of the connector fixing bar 14 can be disengaged.

[0021]

As described above in detail, according to the present invention,
When removing the connector housing, it is not necessary to use a special tool, and the work can be performed immediately, and the attachment / detachment work can be streamlined. In addition, it is possible to reliably eliminate forgetting to mount the electrical insulating plate and eliminate the need for visual inspection after assembly, which is a very useful effect in the industry that promotes work efficiency and can provide highly reliable equipment. Exert.

[Brief description of drawings]

FIG. 1 is a side sectional view of an essential part of an embodiment of the present invention and a sectional view taken along the line AA.

FIG. 2 is an exploded perspective view of a main part of the connector housing of FIG.

FIG. 3 is an assembled perspective view of FIG.

FIG. 4 is a side sectional view of an essential part showing a detached state of the connector housing of FIG. 1 (b).

FIG. 5 is a side sectional view of an essential part showing a state of forgetting to mount the electric insulating plate of FIG. 1 (b).

FIG. 6 is a side sectional view showing a main part of another embodiment according to the present invention and a side sectional view showing a detached state thereof.

7 is an exploded perspective view of a main part of the connector housing of FIG.

8 is an assembled perspective view of FIG. 7.

FIG. 9 is a rear perspective view according to the related art.

FIG. 10 is a side sectional view of a main part of FIG. 9 and a sectional view taken along the line BB of FIG.

FIG. 11 is a perspective view of the connector fixing bar shown in FIG.

FIG. 12 is a side sectional view of a main part showing a state without an electric insulating plate in FIG. 10 (b).

[Explanation of symbols]

3 is a connector housing 3c-2 is a knob 3a is a flange 3c-3 is a shaft part 3b is a mounting foot 5 is an electrical insulating plate 3b-1 is a locking claw 5a is a hole 3b-2 is a stopper 11 a mother wiring board 3c is the unlocking means 14 is the connector fixing bar 3c-1 is the rotating cam 14a is the engaging hole

Claims (2)

[Claims] 1. A connector housing attachment / detachment structure for engaging with a connector fixing bar (14) fixedly provided with an electric insulating plate (5) interposed on a mother wiring board (11), wherein the connector housing (3) is provided. Is provided with flanges (3a) at both ends in the longitudinal direction, and the flanges (3a) are integrally projected in the attaching direction so as to face each other and the engaging holes (1) of the connector fixing bar (14).
4a) engages with the locking claw (3b-1) and further extends integrally from the locking claw (3b-1), passes through the hole (5a) in the electrical insulating plate (5), and the mother wiring board ( 11) A detachable structure for a connector housing, characterized in that it is provided with a pair of rod-shaped mounting legs (3b), which are made of a stopper portion (3b-2) that abuts against the surface, and are separated from each other. 2. A shaft portion (3c-3) pivotally mounted between the pair of mounting feet (3b) according to claim 1, and a knob portion (3) at one end of the shaft portion (3c-3).
c-2) and a rotating cam (3c-1) fixed to the other end, and by turning the knob (3c-2), the locking claw (3b-1) and the connector fixing bar (14 ) Is provided with a lock release means (3c) for disengaging the connector housing.