JPH0545969U - Edge connector - Google Patents

Abstract

(57) [Summary] [Structure] The connector body 1 made of a synthetic resin, in which the groove 2 for inserting the edge portion of the circuit board A is formed, is engaged with the rear surface of the side edge portion of the circuit board to the contact 3. Circuit board A
The engagement piece 6 having the claw portion 6a that receives the contact reaction force of (3) is erected. Even if the locking piece 6 is integrally molded with the connector body 1 so that the locking piece 6 has an insulating property and the claw portion 6a comes into contact with the printed circuit formed on the side edge portion of the circuit board, the short circuit of the circuit is prevented. Try not to occur. A metal support piece 7 is attached to the end of the connector body 1, and the support piece 7 receives the contact reaction force acting on the locking piece 6 via the claw portion 6a. [Effect] The warp of the locking piece due to the creep phenomenon caused by the contact reaction force is suppressed by the support piece, and the circuit board is reliably maintained in the required contact posture even after long-term use, and the durability is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an edge connector, which is formed by arranging contacts in contact with terminal portions provided on an edge portion of a circuit board on a connector body made of a synthetic resin that receives the edge portion of a circuit board.

[0002]

[Prior Art]

 Conventionally, as an edge connector of this type, according to Japanese Patent Laid-Open No. 3-108286, there is provided a long end of a connector body having a claw portion engageable with a side edge portion of a circuit board at a longitudinal end portion of the connector body. When a metal locking piece that can elastically bend in the direction is provided and the circuit board is tilted backward and its edge is inserted into the connector body and the circuit board is erected, the claw part It is known that the circuit board is passed over the side edge and engaged with the rear surface thereof to receive the contact reaction force of the circuit board against the contact, so that the circuit board is held in a required connecting state with respect to the connector body.

[0003]

[Problems to be solved by the device]

 By the way, when the degree of integration of the circuit board has increased and the printed circuit has to be formed on the side edge of the circuit board, if the locking piece is made of metal as in the above-mentioned conventional example, the side edge is printed. Since the circuit may be short-circuited by the claw portion of the locking piece, it is desirable that the locking piece be integrally molded with the connector body made of synthetic resin so that a short circuit does not occur via the claw portion. However, if the locking piece is molded integrally with the connector body, creeping phenomenon will cause the locking piece to warp in the contact reaction force direction of the circuit board against the contact when time elapses, and the circuit board will be contacted as required. It is not possible to hold it securely in the posture, and it is desirable to eliminate such problems and improve durability. An object of the present invention is to provide an edge connector that meets the above demands.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is an edge connector in which a connector body made of a synthetic resin for receiving the edge portion of a circuit board is provided with contacts in contact with terminals provided on the edge portion of the circuit board. Has a claw part at the longitudinal end of the connector body that engages with the rear surface of the side edge of the circuit board to receive the contact reaction force of the circuit board against the contact, and is elastic in the longitudinal direction of the connector body. In the structure in which a flexible locking piece is provided, the locking piece is integrally formed with the connector body, and the contact reaction force acting on the locking piece via the claw portion is applied to the end portion of the connector body. It is characterized in that a metal support piece is attached to engage with the stop piece to receive it.

[0005]

[Action]

 By integrally molding the locking piece on the connector body, the locking piece is made of the same synthetic resin as the connector body, and the claw part of the locking piece is attached to the printed circuit formed on the side edge of the circuit board. The short circuit does not occur even if the two touch. In addition, the contact reaction force of the circuit board against the contact that acts on the locking piece is received by the metal support piece, so the warp in the contact reaction force direction due to the creep phenomenon of the locking piece is suppressed, and it can be used for a long time. However, the circuit board is securely held in the required connection posture.

[0006]

【Example】

 Referring to FIGS. 1 and 2, reference numeral 1 denotes a laterally long connector body formed of an insulating synthetic resin, and a laterally long receiving groove 2 which opens upward in the body 1 is formed. Then, the lower edge portion of the circuit board A is made to be insertable therein, and the terminal portion provided at the edge portion is connected to the contact 3 arranged in the groove wall of the receiving groove 2.

As shown in FIG. 3, frame-shaped guide blocks 4 that open to the front side are erected on both ends of the connector body 1 in the horizontal direction. Protrusions 5 that can be fitted in the respective engagement holes A1 formed on both sides of the lower portion of the road board A are provided in a projecting manner, and further, in the opening portion on the front side of the block 4 so as to be elastically deflectable in the lateral direction. A flatly formed locking piece 6 is provided upright, and a claw portion 6a engageable with a side edge portion of the circuit board A is projectingly provided on an inner surface of an upper end portion of the locking piece 6. The guide block 4 and the locking piece 6 are formed integrally with the connector body 1, and when the circuit board A is erected from a rearwardly inclined posture (a posture inclined toward the front side), the projection 5 is formed in the engagement hole A1. As the claws 6a fit together, the claws 6a pass over the side edges of the circuit board A by the outward bending of the locking pieces 6 and engage with the rear surface of the side edges. The contact reaction force F to the front side acting on the board A is received by the claw portion 6a, and the circuit board A is positioned and held in a desired standing posture in which the circuit board A is raised. Even if it comes into contact with the printed circuit, the claw portion 6a is made of synthetic resin and has an insulating property, so that the circuit is not short-circuited.

Further, inside the guide block 4, there is provided a metal support piece 7 which receives the contact reaction force F acting on the locking piece 6 via the claw portion 6a, which will be described in detail. As shown in FIG. 4, the support piece 7 has a front side engaging portion 7a that engages with an engaging groove on the outer surface of the upper end portion of the engaging piece 6 at the upper end, and a lateral direction formed on the guide block 4. It is provided with a rear side engaging portion 7b that engages with the guide groove 8, an intermediate elastic imparting portion 7c that is inclined downward in the lateral direction, and a lower end fixing portion 7d. As shown in FIGS. 5 and 6, the fixing portion 7d is inserted and fixed in the mounting hole 9 formed in the base portion of the guide block 4, the support piece 7 is erected inside the guide block 4, and the elastic imparting portion 7c is bent. By allowing the lateral bending of the locking piece 6, the two engaging portions 7a and 7b are locked by the locking piece. 6 and the guide groove 8 are always engaged. The contact reaction force F acting on the locking piece 6 is received by the guide block 4 via both the engaging portions 7a and 7b, and the contact reaction force direction due to the creep phenomenon of the locking piece 6, that is, the warp to the front side, occurs. Suppressed. When removing the circuit board A, the claw portion 6a is pushed outward in the lateral direction to release the engagement with the circuit board A. At this time, a twisting force acts on the locking piece 6. Is also received by the guide block 4 via both the engaging portions 7a and 7b, and the locking piece 6 is not forced.

A tongue piece 7e is cut and raised in the fixing portion 7d, and the tongue piece 7e is engaged with a step formed in the mounting hole 9 to prevent the fixing portion 7d from coming off. Small protrusions 7f are formed on both side edges of the fixing portion so that the fixing portion 7d can be inserted and fixed in the mounting hole 9 without play. Further, a bifurcated anchor portion 7g is vertically provided at the lower end of the fixed portion 7d, and the anchor portion 7g is penetrated through the circuit board B on which the edge connector is arranged so that the edge connector is positioned and fixed to the base plate B. ..

[0010]

[Effect of the device]

 As is clear from the above description, according to the present invention, even if the claw portion comes into contact with the printed circuit formed on the side edge portion of the circuit board, an abnormality such as a short circuit does not occur, and the circuit board with respect to the contact is also formed. The warp of the locking piece due to the creep phenomenon caused by the contact reaction force of the metal is suppressed by the metal support piece, and the circuit board is securely held in the required connection posture even after long-term use, resulting in poor contact. It has the effect of improving durability.

[Brief description of drawings]

FIG. 1 is a plan view of an example of the connector of the present invention.

[Figure 2] Front view

FIG. 3 is a perspective view of the main part thereof.

FIG. 4 is a perspective view of a support piece.

5 is a sectional view taken along the line VV of FIG.

6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

 1 Connector body 3 Contact 6 Locking piece 6a Claw 7 Support piece A Circuit board

Claims (1)

[Scope of utility model registration request] 1. An edge connector comprising a synthetic resin connector body for receiving an edge portion of a circuit board, and a contact for contacting a terminal portion provided on the edge portion of the circuit board, which is arranged in a row. Provided at the end in the direction is a locking piece which is elastically flexible in the longitudinal direction of the connector body and has a claw portion which engages with the rear surface of the side edge portion of the circuit board and receives a contact reaction force of the circuit board with respect to the contact. The locking piece is formed integrally with the connector body, and the contact reaction force acting on the locking piece via the claw portion is received by the end piece of the connector body by engaging with the locking piece. An edge connector with a metal support piece attached.