KR19980024412A - Connector for Flexible Circuit Board - Google Patents

Abstract

assignment

The present invention is difficult to release the slide member and the housing due to the interference of other members from the outside, and to provide a compact flexible circuit board connector.

Solution

The flexible circuit board connector 10 is slidable in the housing 30 with a plurality of contacts 20 and a pair of engagement arms 40c including a engagement protrusion 45 and slidable with respect to the housing 30. The flexible circuit board which has the member 40 and is accommodated in the housing 30 is comprised so that the slide member 40 and the contact 20 may be elastically clamped and electrically connected. The projection 45 of the engagement arm 40c protrudes in a substantially perpendicular direction in the lined direction of the pair of engagement arms 40c, and is for temporary engagement formed on the inner side surface 36c of the cavity 36 of the housing 30. The engaging projection 35a or the engaging projection 35b for the main stop is configured to be engageable.

Description

Connector for Flexible Circuit Board

The present invention relates to a connector for a flexible circuit board which houses a flexible circuit board and is electrically connectable thereto.

Conventionally, a housing having a plurality of contacts mounted on a circuit board and a slide member slidable with respect to the housing, wherein the flexible circuit board accommodated in the housing is elastically sandwiched between the slide member and the contact so that the flexible circuit board and the contact are electrically BACKGROUND ART Connectors for flexible circuit boards interconnected with each other are known. Typically, the slide member has a pair of engagement arms at positions near both ends to secure itself to the temporary locking position and the main locking position relative to the housing.

Examples of such a flexible circuit board connector are disclosed in Japanese Utility Model Laid-Open No. 63-182482 and Utility Model Laid-Open No. 64-9376. According to the flexible circuit board connector disclosed in the former, the pair of engagement arms constitutes a latch and is configured to engage projections formed on the outer surface of the housing. According to the connector for a flexible circuit board disclosed in the latter, a pair of engaging projections projecting inwardly of a pair of engaging arms is provided, and the projections are configured to engage with engaging portions provided on the outer surface of the housing.

According to the connectors for flexible circuit boards disclosed in these publications, since the projections projecting on the latches or inwards of the pair of arms of the slide members are engaged with the engaging portions (including the projections) on the outer side of the housing, the slide members are fixed to the housing. The engaged portion is exposed to the outside, and the engagement is easy to be released by the interference of other members from the outside, and does not correspond to the miniaturization of the housing which is usually required. Furthermore, according to the above-mentioned flexible circuit board connector, engagement between the slide member and the housing can be easily released even when a force applied to the slide member is applied.

Therefore, an object of the present invention is to provide a flexible circuit board connector that can hardly be released between the slide member and the housing due to interference of other members from the outside, and satisfies the demand for miniaturization. It is preferable that the structure is difficult to disengage the slide member from the housing even when a force applied to the slide member is applied.

The present invention provides a slide member having a housing mounted on a circuit board to accommodate a plurality of contacts, and a pair of engagement arms including a projection for engaging with the electrical housing to allow sliding with respect to the housing. The flexible circuit board connector for electrically connecting the flexible circuit board and the electrical contact by elastically sandwiching the flexible circuit board accommodated in the housing between the slide member and the electrical contact, wherein the projections of the pair of engagement arms are arranged in the pair. Projecting in a substantially perpendicular direction with respect to the lined direction of the engagement arm, and configured to engage with the engagement portion formed on the inner side of the cavity determined by the fixed wall of the housing.

Preferably, when the protrusion and the engaging portion engage, the side surface of the engaging arm is configured to abut along the longitudinal direction with the inner surface of the side wall.

The inner surface may be an inner surface extending in the vertical direction of each inner side of the fixed side walls of the housing.

1 is a plan view of a partial break showing a connector for a flexible circuit board with the slide member in this locking position;

FIG. 2 is a front view of partial break showing the connector for a flexible circuit board with the slide member in this locking position; FIG.

Fig. 3 is a bottom view of partial break showing the connector for the flexible circuit board with the slide member in this locking position;

Fig. 4 is a right side view of a partial break showing the connector for the flexible circuit board with the slide member in this locking position;

5 is an enlarged sectional view taken along line A-A in FIG. 1;

6 is a cross-sectional view taken along the line B-B in FIG. 3;

Fig. 7 is a bottom view showing the connector for the flexible circuit board with the slide member in the temporary locking position; And

FIG. 8 is a cross-sectional view similar to FIG. 6 taken along line C-C in FIG. 7;

Explanation of main symbols in the drawings

10 Flexible Circuit Board Connector

20 contacts

30 housing

35a engaging protrusion (engaging part)

35b engaging projection (engaging part)

36 cavity

36c medial side

40 slide members

40c engagement arm

45 turning

EMBODIMENT OF THE INVENTION Below, with reference to drawings, the connector for flexible circuits which become preferable embodiment of this invention is demonstrated in detail.

1 to 6 show a connector 10 for a flexible circuit board, FIG. 1 is a partially broken plan view, FIG. 2 is a front view, FIG. 3 is a bottom view, FIG. 4 is a right side view, and FIG. 5 is FIG. 1. An enlarged sectional view along the line AA in FIG. 6 and FIG. 6 is a sectional view along the line BB in FIG. 3.

As shown, the flexible circuit board connector 10 includes a plurality of contacts 20, an insulating housing 30 for receiving the plurality of contacts 20, and a slide member sliding with respect to the insulating housing 30 as described below. 40 and a reinforcement plate 90.

As shown in Fig. 5, the contact 20 has a fork-shaped contact portion 21, a press-fit contact support 26 including a press-in protrusion 22a, and a surface-mounted brazed dyne 23. 1 and 3, the brazed dynes 23 are arranged to protrude from the rear end surface 30b of the insulating housing 30 to form a row. 3 and 5, a plurality of slots 31 are formed on the bottom surface 30c of the insulating housing 30 to correspond to the length of each contact 20, and the contacts 20 form the slots 31. In the opening 32 formed in the insulating housing 30, a contact support 26 is inserted into the insulating housing 30 and includes a press-in protrusion 26a extending substantially perpendicular to the longitudinal direction of the contact 20. It is fixed in the insulating housing 30 by being press-fitted. In the vicinity of the brazed dyne 23, an upright portion 24 extending in a substantially vertical direction is formed. The upright portion 24 abuts the rear end surface 30b of the rear side of the insulating housing 30 and stabilizes the fixing of the contact 20 by the contact support 26. Moreover, the upright part 24 can also be used as a detection contact part for the soldering test | inspection of the tined 23 which soldered. The contact part 21 of the contact 20 has a pair of elastic pieces 21a and 21b up and down. Both elastic pieces 21a and 21b are formed to be able to be bent in an up and down direction, and protrusions 22a and 22b are formed at respective end positions. In the present preferred embodiment, the flexible circuit board (not shown) is held between the upper elastic piece 21a and the slide member 40, and the projection 22a is configured to be a contact point with the flexible circuit board, but the slide member 40 The flexible circuit board can be held between the lower elastic piece 21b and the slide member 40 by changing the shape of), and the projection 22b can also be used as a contact point with the flexible circuit board.

1, 2, 3, and 5, the slide member 40 includes a base portion 40a extending in the width direction of the flexible circuit board connector 10 and a tongue portion extending in the position of the contact 20 ( A pair of opening pieces 40c are formed on both sides of the recess 40b and the tongue tongue 40b. The engagement piece 40c includes the arm part 43, and the protrusion 45 which protrudes toward the bottom side is formed in the vicinity of the edge part of the arm part 43. As shown in FIG. In FIG. 6, the engaged state in this locking position of the engagement piece 40c and the insulating housing 30 is shown. Their more detailed action is described later.

1, 3 and 4, the reinforcement plate 90 has a surface mount soldering portion 90a and a press-fit portion 90b for assembling and attaching to the insulating housing 30. The reinforcing plate 90 is inserted from the entire end face of the insulating housing 30, that is, from the end face 30a facing the base 40a of the slide member 40, and fixed to the insulating housing 30 by the press-in part 90b. do.

7 and 8 are views showing the slide member 40 in the respective locking positions with respect to the insulating housing 30. FIG. 7 is a bottom view and FIG. 8 is a sectional view similar to FIG. 6 along the line CC in FIG. to be. Referring to FIGS. 1, 3, 6, 7 and 8, the engagement between the slide member 40 and the insulating housing 30 will be described in detail below.

As shown, the insulating housing 30 has a cavity 36 that can accommodate each of the pair of engagement pieces 40c. The cavity 36 is determined by a fixed wall of the insulating housing 36 and is located at the base 40a side of the slide member 40, that is, at the insertion side of the slide member 40, that is, at the end face 30a. 36a) and narrow portion 36b located inward. The wide part 36a and the narrow part 36b are formed so that the surface 36c located outside may be one surface, and the surface 36d located inside may have the step part 36e. The surface 36c constitutes an inner surface of the side wall (fixed side wall) 39 having rigidity. On the surface 36c, engaging projections 35a and 35b having different shapes are formed. As will be understood in FIGS. 6 and 8, the engaging projections 35a and 35b are formed of the arm portion 43 of the engaging piece 40c of the slide member 40 when the slide member 40 is received in the cavity 36. It is formed to be located at the bottom side.

The slide member 40 is formed separately from the insulating housing 30, is inserted into the cavity 36 from the end face 30a side, and is held at the temporary locking position shown in Figs. In the temporary locking position, the projection 45 of the engagement piece 40c engages with the engagement projection 35a. The engagement protrusion 35a has an inclined surface 38a on the end face 30a side and an engagement piece 38b on the opposite side. In the process of reaching the temporary stop, the projection 45 of the engagement piece 40c abuts on the inclined surface 38a and is guided by it, so that the engagement piece 40c is bent inward in the wide portion 36a of the cavity 36. Works. When the projection 45 exceeds the engagement protrusion 35a, the bending of the engagement piece 40c is released, and the engagement piece 46 of the protrusion 45 and the engagement piece 38b of the engagement protrusion 35a engage with each other. As a result, the slide member 40 is prevented from being pulled out of the insulating housing 30.

The flexible circuit board first puts the slide member 40 in the locked position and is inserted to the position of the contact portion 21 of the contact 20 in the insulating housing 30. Thereafter, the slide member 40 is slid to this locking position, whereby the flexible circuit board and the contact 20 are electrically connected. In this locking position, the projection 45 of the engaging piece 40c of the slide member 40 engages with the engaging projection 35b. The engagement protrusion 35b is a protrusion smaller than the engagement protrusion 35a. In the process of the slide member 40 from the temporary locking position to the main locking position, the projection 45 of the engaging piece 40c acts to pass over the engaging projection 35b, but the engaging piece 40c is the cavity 36. In the narrow portion 36b.

As can be understood from the above, the projection 45 which is the engagement portion between the arm portion 43 and the insulating housing 30 which can bend the engagement piece 40c is displaced in a direction perpendicular to the bending direction of the engagement piece 40c. When the slide member 40 is in this locking position by being positioned, the engagement piece 40c abuts along the longitudinal direction with the surface 36c, which is an inner surface of the side wall 39 having a rigid side of the arm portion 43, The projection 45 engages with the engaging projection 35b protruding from the surface 36c at a position away from the contact position described above. Therefore, the width standard of the insulating housing 30 can be made smaller than the conventional one, and the engagement of the engagement piece 40c and the insulating housing 30 can be easily carried out even when the slide member 40 is subjected to the force of being pulled out. A configuration that is not released is realized.

Since the side wall 39 of the insulating housing 30 does not need to have elasticity for engagement with the slide member 40, it is not easily broken, and as shown, the housing of the press-in portion 90b of the reinforcing plate 90 is shown. This is possible. Therefore, the soldering part 90a of the reinforcement board 90 can be arrange | positioned in the vicinity of the cross section 30a away from the position of the soldering part dyne 23 of the contact 20, and is attached to the reinforcement board 90 and the contact 20. As a result, the connector 10 for a flexible circuit board can be stably fixed on the circuit board.

As mentioned above, although preferred embodiment of this invention was described, this is an illustration to the last and does not limit this invention.

According to the flexible circuit board connector of the present invention, the engaging projection of the pair of engaging arms with the slide member protrudes in a substantially perpendicular direction in the lined direction of the pair of arms, and can engage with the engaging portion formed on the inner side of the cavity of the housing. By being formed, it is difficult to disengage the engagement arm from the housing, and a stable and reliable electrical connection with the flexible circuit board is realized.

Furthermore, especially in the flexible circuit board connector of the present invention, the side of the engagement arm is abutted in the longitudinal direction with the inner surface of the cavity, so that the engagement between the slide member and the housing is difficult to be released even when a force applied to the sliding member is applied. .

Claims (6)

A slide member having a housing for accommodating a plurality of contacts and mounted on a circuit board, and a pair of engagement arms slidably attached to the housing, the flexible circuit board for press-contacting the flexible circuit board to the contact with the slide member. In the connector for Forming a pair of cavity ratios into which the engaging arms of the slide member are inserted near both sides of the housing, And a mating portion is formed on an inner surface of the cavity and an electric engagement arm of the slide member. The method of claim 1, The inside of each cavity is provided with a pair of engagement protrusions for temporary locking and this locking, and each engagement arm is provided with downward protrusions, The connector for flexible substrates characterized by the above-mentioned. The method according to claim 1 or 2, A slot for accommodating the contact is formed on the bottom of the housing in parallel, and the contact has a fork-shaped contact portion having a support and a pair of elastic pieces. The method of claim 3, wherein And the slider is inserted between the pair of elastic pieces, and the flexible circuit board is selectively inserted into either of the upper and lower sides of the slider. The method of claim 4, wherein And said support portion of each of said contacts comprises a pair of projections standing up substantially parallel in the height direction of said housing. 6. A connector for a flexible circuit board according to any one of claims 1 to 5, wherein reinforcement plates are provided on both sides of the housing, and are soldered and fixed to the circuit board.