JP2590859Y2 - Flat cable connector - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a flat cable (F
The present invention relates to a fitting structure that prevents a load on a printed circuit board when a flat cable is inserted and removed and prevents the flat cable from being scraped in a PC) connector.

[0002]

2. Description of the Related Art Flat cable connectors (ZIF)
Conventionally, the type shown in FIGS. 5 to 9 is known. That is, the flat cable connector 1 shown in FIG. 5 includes a housing body 2 and contacts 3 and 4 which are staggered and project downward from the housing body 2.
The cover main body 5a is vertically inserted into and removed from the hollow interior of the housing main body 2, and the engaging projection 5 is provided at the tip of an engaging portion 5b vertically provided from both ends in the longitudinal direction of the cover main body 5a.
c and a cover 5 provided with a cut portion 5e.

The contact of the flat cable 6 inserted into the hollow of the housing body 2 is pressed laterally on the cover 5 so that the contacts 3 of the housing body 2 are pressed.
A pressing plate 5d for making an electrical connection with 4 is vertically provided from the cover body 5a.

[0004] Protrusions for engaging with the engaging protrusions 5c of the cover 5 are provided on the side walls at both ends in the longitudinal direction of the housing body 2, and the protrusions 2a move the cover 5 downward. For locking when pushed into
The protrusion 2b is for preventing the cover 5 from being removed.

In such a connector 1 for a flat cable 6, as shown in FIG. 7, the cover 5 is pulled up from the housing main body 2 by a finger, and the insertion opening of the flat cable 6 is widened by a cut portion 5e of the cover 5. (FIG. 7A). Then, the flat cable 6 is inserted into the housing body 2.

Next, as shown in FIGS. 7 (b) to 7 (c), the cover 5 is set upright, and the cover 5 is inserted into the hollow interior of the housing body 2. This allows
The flat cable 6 is pushed laterally by the pressing body 5 d of the cover 5, and the contacts of the flat cable 6 are resilient pieces 3 a, 4 of the contacts 3, 4 of the housing body 2.
a and are electrically connected to each other.

[0007] As another example, there is a connector 1a as shown in FIGS.
The cover 8 is pulled out of the cover 8
Is intended to expand the insertion space for the flat cable 6 only by moving in the vertical direction. As shown in FIG.
The cover 8 is lifted upward, and the flat cable 6 is inserted into the housing body 7 from an oblique direction.
By pushing vertically downward, the contacts of the flat cable 6 and the contacts 3b and 4 of the housing body 7 are pressed.
The electrical connection is made by bringing the elastic pieces 3c and 4c of FIG.

[0008]

[Problems to be Solved by the Invention] The above-described connectors 1, 1
a is intended to increase the insertion space for the flat cable, reduce the load on the printed circuit board due to the insertion and removal of the flat cable into and out of the housing, and eliminate problems such as scraping of the surface of the flat cable. However, in the connector 1 described above, when the cover is inserted into the housing, the cover is easily inserted into the housing without straightening the cover, so that the insertion force of the cover increases, and the housing or the cover is broken. This may occur. Further, in the connector 1a, there is a case where a space for inserting the flat cable cannot be sufficiently obtained, and a stroke at the time of inserting the cover becomes long.
Further, there is a drawback that the load at the time of insertion into the printed circuit board cannot be completely eliminated.

The present invention has been made in view of the above-mentioned problems, and has a housing and a cover which take a large space for inserting a flat cable, eliminate a load at the time of insertion into a printed circuit board, and prevent the surface of the flat cable from being scraped. An object of the present invention is to provide a connector having an improved fitting structure.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and to achieve the above-mentioned object, the gist of the present invention is to provide a housing body and a leg mounted on the housing body and fixed to a circuit pattern of a printed circuit board. A cover body that is slidably inserted in a vertical direction into the hollow inside of the housing body and that contacts the flat cable inserted into the housing body so as to be electrically connected to the contact of the housing body; When the flat cable is inserted by the projections of the engaging portions vertically provided at both ends in the longitudinal direction of the cover main body, the locking plate is locked to the locking portion of the housing main body, and the flat cable is pulled out. A flat cable connector comprising: a cover that is retained by a locking portion of the housing body; A step portion is provided in the middle of the vertical sliding contact surface between the locking portion of the housing body and the engaging portion of the cover, and when the cover is slid in the vertical direction, the cover is moved in the vertical direction and in the vertical direction. This is to make it possible to move in the orthogonal direction.

[0011]

According to the connector of the present invention, when the cover main body is grasped by hand and pulled upward, the projection of the engaging portion of the cover main body is unlocked from the locking portion of the housing main body, and the engagement of the cover main body is performed. The portion rises along the sliding contact surface with the locking portion of the housing body. At the time of the upward movement, the upward movement is caused by the smooth step portion of the sliding contact surface, and the upward movement is performed in a direction perpendicular to the upward direction (that is, the front-rear direction of the connector shown in FIG. 1 (perpendicular direction of the paper)). . Therefore, the pressing plate of the cover body also moves in the front-rear direction of the connector at the same time, so that the space for inserting the flat cable is largely opened. Further, after inserting the flat cable into the housing main body, when the cover is pushed into the housing to fix the flat cable, the engaging portion of the cover main body is guided by the sliding contact surface of the locking portion of the housing main body. 3, the pressing plate of the cover body presses one side of the flat cable in the middle of the insertion process, and the contact of the flat cable comes into contact with the contact of the housing body to make electrical connection. Will be done. Therefore, the length at which the pressing plate of the cover and the flat cable rub against each other is shortened, and the flat cable is less scraped as compared with the related art.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of the flat cable connector according to the present invention, FIG. 2 is a side view, FIG. 3 is a sectional view taken along line BB of FIG. 1, and FIG. 4 is an explanatory view showing how the flat cable is fixed. It is. In the drawing, reference numeral 10 is a connector for a flat cable, 11 is a housing body, 12 is a contact,
13 is a printed circuit board, 14 is a locking portion of the housing body,
15 is a retaining portion, 16 and 16a are lock springs, 17, 17
a is a step portion of the sliding contact surface, 18 and 18a are housing guide portions, 19 is a cover, 20 is a cover main body, 21 is a cover engaging portion, 22 is a cover lock, 23 is a stopper, 24
Denotes a pressing plate. Those corresponding to the conventional example are denoted by the same reference numerals for easy understanding.

The connector 10 of the present invention comprises a housing body 11 and a printed circuit board 13 mounted on the housing body.
1 having legs fixed to the circuit pattern of FIG.
2 and a flat cable 6 inserted slidably in the vertical direction into the hollow interior of the housing main body 11 and electrically connected to the contact 12 of the housing main body 11 so as to be electrically connected to the contact 12 of the housing main body 11. When the flat cable 6 is inserted, a pressing plate 24 which is vertically provided from the cover body 20 to be pressed and a projection (stopper) 23 of an engaging portion 21 which is provided at both ends in the longitudinal direction of the cover body 20 are inserted. In a flat cable connector comprising a cover 19 which is locked to the locking portion 14 of the main body and which is locked by the locking portion 14 of the housing main body when the flat cable 6 is removed, the locking portion 14 of the housing main body and the cover 19 A step portion 17, which smoothly extends in the middle of a vertical sliding contact surface with the engaging portion 21 of the cover,
A cover 17a is provided so that when the cover 19 is slid in the vertical direction, the cover 19 can be moved in the vertical direction and in a direction perpendicular thereto.

Next, the respective components of the main part of the present invention will be described in detail. Both ends of the housing body 11 are provided with a gate-shaped elastic locking portion 14 in a side view (see FIGS. 1 and 2). ) Is provided. The column portions of the locking portion 14 are lock springs 16 and 16a, and the upper portion thereof is connected to the retaining portion 15. One of the lock springs (right side in FIG. 2)
The side wall of the lock spring 16 is a sliding contact surface, and a step 17 is provided in the middle of the sliding contact surface. The sliding surface 17b of the other lock spring 16a (the left side in FIG. 2) is straight in the vertical direction.

In the housing guide portions 18 and 18a (see FIG. 3) erected inside the locking portion 14, a side wall inside the housing guide portion 18 is used as a sliding contact surface, and a step portion 17a is provided in the middle thereof. Is provided. The inner side wall of the other housing guide 18a is straight in the vertical direction.

Next, as shown in FIG. 1, an engaging portion 21 vertically extending from both ends of the cover body 20 of the cover 19 has a cover lock 22 having an inclined portion and protruding in the left-right direction.
A stopper 2 protruding left and right at the lower end of the engaging portion 21
3 is provided so that the width of the engaging portion 21 in the front-rear direction is accommodated inside the housing guides 18 and 18a.

The cover lock 22 is engaged with the lower end surface of the retaining portion 15 to lock when the cover 19 is pressed into the hollow interior of the housing body 11, and the upper end surface of the stopper 23 is The cover 19 comes into contact with the lower end surface of the portion 15 to prevent the cover 19 from coming off.

The operation when the cover 19 of the connector 10 thus formed is inserted and removed in the vertical direction will be described. First, when the cover 19 is pulled upward by hand from the locked state of the housing body 11, FIG.
As shown in FIG.
Rises while pushing the retaining portion 15 and the lock springs 16 and 16a in the left-right direction, and at the same time, the stopper 23 also rises. When the right side wall 23a of the stopper 23 reaches the step 17 on the sliding surface of the lock spring 16, the step 17 is inclined forward.
Is forcibly moved forward, and the cover 19 moves forward. After that, the stopper 23 further rises a little and the stopper 23 comes into contact with the retaining portion 15 to stop the upward movement of the cover 19.

Next, when the cover 19 is pushed downward from the state where the upward movement is stopped, the engaging portion 21 of the cover 19 is lowered as shown in FIG.
The first left side wall 21a descends along the sliding contact surface of the housing guide portion 18. Then, the left side wall 21 of the engagement portion 21
When the lower end of a reaches the step 17a of the housing guide 18, the step 17a is inclined rearward,
The engaging portion 21 is forcibly moved rearward, and the cover 19 descends while moving rearward. Eventually, the cover body 20 of the cover 19 becomes the housing body 11.
The cover lock 2 of the engagement portion 21
2 is locked by the locking portion 14 and the lowering of the cover 19 is stopped.

As described above, when the cover 19 slidable up and down on the housing body 11 is lifted upward, the right side wall 23a of the stopper 23 of the engaging portion 21 is guided by the sliding contact surface of the lock spring 16, and When it is pushed down in the direction, it is guided by the sliding contact surface of the housing guide portion 18. The sliding contact surface between the lock spring 16 of the engaging portion 14 of the housing body and the housing guide portion 18 regulates the cover 19 in the front-rear direction, and the steps 17, 17a provided in the middle of the sliding contact surface. Thereby, the cover 19 is moved in the front-rear direction.

Therefore, when the cover 19 moves in the vertical direction (see FIG. 3), the cover 19 not only moves in the vertical direction but also moves in a direction perpendicular to the vertical direction, that is, in the front-back direction. . Such a connector 1
0, as shown in FIG.
The cover 19 is lifted upward by the moving amount S from the inside of the hollow. The cover 19 also moves forward while moving upward, so that a space for inserting the flat cable 6 is widened.

Then, the flat cable 6 is inserted into the housing main body 11 with its contact side facing the contact elastic piece 12a of the contact 12 of the housing main body 11. Since the frontage of the insertion opening is wide, the flat cable 6 is inserted without load.

Next, when the cover 19 is pushed downward,
In the first descending state, it is inserted with no load, and from the middle, as shown by the arrow in the figure, the engaging portion 21 of the cover 19 is guided by the sliding contact surface 17a as described above, and the cover 19 is moved rearward. As a result, the pressing plate 24 of the cover 19 also moves rearward. Therefore, the flat cable 6 is pressed backward by the pressing plate 24, and the contact of the flat cable 6 abuts on the elastic piece 12 a of the contact 12 of the housing body 11. Further, when the cover 19 is pushed downward while being in contact with one surface of the flat cable 6, the cover lock 22 of the engaging portion 21 and the housing body 1 are pressed.
1 locking portion 14 (preventing portion 15 and lock springs 16, 16)
a) and the flat cable 6 is also locked by the pressing plate 2.
Fixed at 4.

In this manner, the flat cable 6 is fixed by the connector 10, and the electrical connection between the contact of the flat cable 6 and the contact 12 of the housing body 11 is made. Engaging portion 21 and locking portion 14 of housing body 11
The design of the state of engagement of the sliding contact surface with the design can be changed. For example, the sliding contact surface 17 of the lock spring 16a of the locking portion 14
b, a step portion is also formed, and the stopper 23 of the engagement portion 21 is formed.
The cover 19 may be moved in the up-down direction as well as in the front-rear direction so as to slide on the left and right side walls.

[0025]

As described above, the connector for a flat cable according to the present invention has a housing body, a contact mounted on the housing body, and a vertically slidably inserted into the hollow interior of the housing body. At the same time, the flat cable inserted into the housing body is pressed down by the cover body to press the flat cable, and the cover body is prevented from being pulled out by the locking parts vertically provided at both ends in the longitudinal direction of the cover body. In a flat cable connector including a cover, a step portion that smoothly extends is provided in the middle of a vertical sliding contact surface between the locking portion of the housing body and the engaging portion of the cover, and the cover is slid in the vertical direction. When the cover is moved, the cover can be moved in the vertical direction and the direction perpendicular thereto, so the insertion force of the cover is reduced, and the flat cable is inserted. It is also sufficiently secured. Then, the flat cable can be inserted into and removed from the housing main body without load, and the sliding contact range of the cover with the pressing plate is reduced, so that the flat cable is less scraped. In addition, destruction of the locking portion and the engaging portion that act to lock the housing and the cover,
Since the cover is inserted with a small force, such a risk is eliminated.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a flat cable connector according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a cross-sectional view taken along the line AA of FIG. 1 and also shows how the flat cable is fixed.

FIG. 5 shows a flat cable connector according to a conventional example.
They are a plan view (a), a left-side sectional view (b), a front view (c) showing a partly broken view, and a right-side sectional view (d).

FIG. 6 is a side view of the connector according to the conventional example.

FIGS. 7 (a), 7 (b) and 7 (c) show how a flat cable is inserted into a conventional connector.

FIG. 8 is an explanatory view showing how a flat cable is inserted in a connector according to another conventional example.

FIG. 9 is an explanatory view showing a state where a flat cable of a contact according to another conventional example is inserted.

[Explanation of symbols]

10 flat cable connector, 11 housing body, 12 contacts, 13 printed circuit board, 14
Locking part of housing body, 15 locking part, 16, 16a
Lock spring, 17, 17a Step portion of sliding contact surface, 18, 1
8a housing guide portion, 19 cover, 20 cover body, 21 engaging portion of cover, 22 cover lock,
23 stopper, 24 pressing plate.

Claims (1)

(57) [Scope of request for utility model registration] A contact having a housing main body, a leg mounted on the housing main body and fixed to a circuit pattern of a printed circuit board, and slidably inserted vertically into a hollow interior of the housing main body, A pressing plate vertically provided from the cover body to press the flat cable inserted into the housing body so as to be electrically connected to the contact of the housing body; and a pressing plate vertically provided at both longitudinal ends of the cover body. A flat cable connector comprising: a cover which is locked to the locking portion of the housing main body when the flat cable is inserted by the projection of the engaging portion, and which is locked by the locking portion of the housing main body when the flat cable is pulled out. The sliding portion slides in the vertical sliding surface between the engaging portion of the housing body and the engaging portion of the cover. A flat cable connector having a stepped portion which is easily connected, and wherein the cover is movable in a vertical direction and a direction perpendicular thereto when the cover is slid in the vertical direction.