JP3722534B2 - Connector for FPC / FFC - Google Patents

Description

[0001]
【Technical field】
The present invention relates to a connector used when a flexible printed circuit board (FPC) or a flexible flat cable (FFC) is connected to a contact group.
[0002]
[Prior art and its problems]
An FPC or FFC connector (hereinafter referred to as an FPC / FFC connector) is basically composed of an insulator having a contact group and a slider, and the insulator is provided with a slider insertion opening facing a plurality of contacts. Yes. When the slider is inserted after the FPC / FFC is inserted into the insertion opening, the contact pressure between the FPC / FFC and the contact is obtained. As this connector, there are known a type in which a slider is linearly inserted into an insertion opening of an insulator and a type in which the slider is inserted by rotating the slider.
[0003]
However, the conventional rotation type cannot perform the rotation operation smoothly, or if the insertion pressing portion of the slider receives the elastic reaction force of the contact, the slider is not smoothly inserted into the insertion opening, or There was a risk of detachment.
[0004]
OBJECT OF THE INVENTION
In the FPC / FFC connector device having a rotation type slider, the present invention can smoothly perform the rotation operation based on the above problem awareness of the conventional device, and the slider can provide the elastic reaction force of the contact. An object is to obtain a connector that can be smoothly inserted into the insertion opening of the insulator even if it is received.
[0005]
SUMMARY OF THE INVENTION
The present invention relates to an insulator having an insertion opening for inserting an FPC / FFC and a slider and a plurality of contacts facing the insertion opening; and an FPC / FFC inserted into the insertion opening of the insulator and inserted into the insertion opening. In this FPC / FFC connector, the insulator has a pair of left and right rotation fulcrum protrusions located on both sides of the insertion opening in the insertion direction. A pair of arm portions each having a recess for pivotally receiving the pivot fulcrum protrusion; and a pair of arms that are integrated with the pair of arm portions and inserted into and removed from the insertion opening by a pivotal movement around the pivot fulcrum protrusion. The slider, and the slider is in a state where the insertion pressing portion is spaced apart from the insertion opening by a certain distance. Can solve the engagement between the rotation fulcrum projection data, the slider and the insulator, together later when the insert pressing part inserts the insertion pressing unit into the insertion opening begins receiving the elastic reaction of the contact A cam surface formed on the slider and a guide surface formed on the insulator are provided to contact and receive the elastic reaction force, and the cam surface is an axis of rotation about the rotation fulcrum protrusion. The guide surface has a plane in contact with this plane in a state where the insertion pressing portion of the slider is completely inserted into the insertion opening of the insulator. It is characterized by.
[0006]
The slider and the insulator, when inserting the insertion pressing portion of the slider to the normal position of the insertion recess, it is desirable to provide a locking portion for locking engage with each other.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on illustrated embodiments. The synthetic resin insulator 10 fixed on the substrate B includes an upper surface wall 17 and a lower surface wall 18. A large number of parallel-aligned contact insertion grooves 11 are formed on the lower surface wall 18 on the substrate B side, and an insertion opening 12 for inserting an FPC / FFC and a slider is formed above the contact insertion groove 11. Yes. A contact 20 is inserted into each contact insertion groove 11. As shown in FIG. 3, the contact 20 includes a soldering portion 21 to be soldered to a terminal on the substrate B, a contact elastic leg 22 that extends into the contact insertion groove 11 and protrudes into the insertion opening 12, and an insulator. 10 and a fixing portion 23 that is inserted into and fixed to the fixing groove 19 at the top. A contact convex portion 22a is formed at the tip of the contact elastic leg 22 toward the insertion opening 12 side.
[0010]
The top wall 17 of the insulator 10 is positioned at both ends in the alignment direction of the contacts 20, that is, on both sides in the insertion direction to the insertion opening 12, as shown in FIG. A protrusion 13 is formed.
[0011]
The slider 30 to be inserted into the insertion opening 12 of the insulator 10 has a pair of arm portions 31 at both ends in the longitudinal direction, and an insertion pressing portion (integrated with the pair of arm portions 31 and inserted into and removed from the insertion opening 12). A contact pressure applying portion) 33. In the pair of arm portions 31, a rotation fulcrum recess 32 made of a semi-cylindrical surface corresponding to the rotation fulcrum protrusion 13 of the insulator 10 is formed.
[0012]
The slider 30 can be rotated about the center O of the cylindrical surface of the rotation fulcrum protrusion 13 and the rotation fulcrum recess 32 with the rotation fulcrum recess 32 in contact with the rotation fulcrum protrusion 13. is there. The insertion pressing portion 33, when inserted into the insertion opening 12, presses the FPC / FFC 40 inserted into the insertion opening 12 in advance to the contact 20 side and flexes the contact elastic leg 22, while each terminal of the FPC / FFC 40 is inserted. Is brought into contact with the contact convex portion 22 a of the contact elastic leg 22.
[0013]
Lock protrusions 14 and 34 are formed on the left and right ends of the insulator 10 and the slider 30, respectively. When the slider 30 is rotated and the insertion pressing part 33 is inserted into the insertion opening 12, the locking protrusions 14 and 34 are locked at the final stage when the insertion pressing part 33 is inserted into the normal position. The lock projection 14 is passed over and locked in a state of overcoming it.
[0014]
The slider 30 is further provided with a convex portion 36 having a cam surface 35 at one end thereof, and the insulator 10 is integrally provided with a guide column 16 having a guide surface 15 that engages with the cam surface 35. Yes. The cam surface 35 has a cylindrical surface 35a centering on an axis connecting the left and right rotation centers O, and a flat surface 35b continuous to the cylindrical surface 35a, while the guide surface 15 inserts the slider 30 in the insertion direction. When the slider 30 is rotated to the fully inserted position, it comes into contact with the cylindrical surface 35a of the cam surface 35. An introduction chamfer 15 c is provided on the upper end portion of the guide surface 15. The cam surface 35 and the guide surface 15 rotate the slider 30 to insert the insertion pressing portion 33 into the insertion opening 12, and the distal end portion of the insertion pressing portion 33 is the contact elastic leg 22 (contact convexity) of the contact 20. After starting to receive the elastic reaction force of the portion 22a), the position is determined so as to contact each other and receive the elastic reaction force.
[0015]
Then, the slider 30 rotates the insertion pressing portion 33 in a direction away from the insertion opening 12, and in the state where the cam surface 35 and the guide surface 15 are disengaged, the rotation fulcrum recess 32 and the insulator. The engagement with the ten pivot fulcrum protrusions 13 can be released and removed.
[0016]
Accordingly, in the apparatus having the above-described configuration, the FPC / FFC 40 is first inserted into the insertion opening 12 of the insulator 10 in a state where the rotation fulcrum recess 32 of the slider 30 and the rotation fulcrum protrusion 13 of the insulator 10 are engaged. In this state, when the slider 30 is rotated around the rotation center O and the insertion pressing portion 33 is inserted into the insertion opening 12, the tip of the insertion pressing portion 33 eventually comes into contact with the surface of the FPC / FFC 40, The contact elastic leg 22 of the contact 20 starts to bend. The cam surface 35 and the guide surface 15 start contact with each other at this time at the latest, and act to receive the elastic reaction force of the contact elastic leg 22 received by the slider 30. That is, the operator simply applies turning force to the upper surface of the slider 30, and the contact between the rotation fulcrum recess 32 of the slider 30 and the rotation fulcrum protrusion 13 of the insulator 10 is maintained, and the slider 30 does not come off. That is, even if the slider 30 receives the elastic reaction force of the contact elastic leg 22 due to the contact between the cam surface 35 and the guide surface 15, the slider 30 rotates in the separation direction around the rotation fulcrum 15 and is detached from the insulator 10. There is no fear.
[0017]
When the slider 30 is further rotated in the insertion direction, the flat surface 35 b of the cam surface 35 comes into contact with the guide surface 15. In this state, as shown in FIG. 2, the lock protrusion 34 of the slider 30 and the lock protrusion 14 of the insulator 10 are engaged and locked, and further, the flat surface 35 b and the guide surface 15 are brought into contact with each other by the contact between the flat surfaces. The rotation is further prevented.
[0018]
FIG. 7 shows another embodiment of the present invention, in which the present invention is applied to a connector that is further reduced in height. The difference from the embodiment of FIGS. 1 to 6 is that a part of the lower surface wall 18 of the insulator 10L is cut off, and the contact insertion groove 11 is formed in the cut portion, thereby reducing the height of the insulator 10L. This is to reduce the height of the FPC / FFC connector device.
[0019]
【The invention's effect】
As described above, according to the present invention, in the FPC / FFC connector device having the rotation type slider, the pair of rotation fulcrum protrusions are provided on the insulator side, and the pair of arm portions and the insertion pressing portion are provided on the slider side. Since the recess is formed in the pair of arms so as to receive the rotation fulcrum projections, the rotation operation can be performed smoothly. Further, the slider can be easily assembled because the engagement between the concave portion and the pivot fulcrum protrusion of the insulator can be released in the pivot state in which the insertion pressing portion is separated from the insertion opening by a certain distance. Further, the slider and the insulator are brought into contact with each other after the slider is rotated about the rotation fulcrum protrusion and the insertion pressing portion is inserted into the insertion opening and the insertion pressing portion starts to receive the elastic reaction force of the contact. A cam surface formed on the slider and a guide surface formed on the insulator are provided to receive the elastic reaction force, and the cam surface is centered on the axis of the rotation motion centering on the rotation fulcrum protrusion. The guide surface has a flat surface that comes into contact with this plane in a state where the insertion pressing portion of the slider is completely inserted into the insertion opening of the insulator. Can be prevented more reliably.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of an FPC / FFC connector according to the present invention in a state in which insertion of a slider is started.
FIG. 2 is a perspective view showing a state where the insertion has been completed.
FIG. 3 is a longitudinal sectional view showing a state where the insertion is started and the insertion pressing portion of the slider starts to receive the elastic reaction force of the contact.
4 is a side view showing a relationship between a cam surface and a guide surface in the state shown in FIGS. 1 and 3. FIG.
5 is a side view showing the relationship between the cam surface and the guide surface in the state of FIG.
FIG. 6 is an exploded perspective view showing an open rotation shaft portion of an insulator and a slider.
FIG. 7 is a cross-sectional view corresponding to FIG. 3, showing another embodiment of the FPC / FFC connector of the present invention.
[Explanation of symbols]
10 Insulator 11 Contact Insertion Groove 12 Insertion Opening 13 Rotating Support Point Projection 14 Lock Projection 15 Guide Surface (Non-Cylinder Surface)
16 Guide pillar 20 Contact 21 Soldering portion 22 Contact elastic leg 23 Fixing portion 30 Slider 31 Arm portion 32 Rotating fulcrum recess portion 33 Insertion pressing portion 34 Lock projection 35 Cam surface 35a Cylindrical surface 35b Flat surface (non-cylindrical surface)
40 FPC / FFC

Claims (2)

An insulator having an insertion opening for inserting the FPC / FFC and the slider and a plurality of contacts facing the insertion opening; and an FPC / FFC inserted into the insertion opening of the insulator and inserted into the insertion opening. Slider to obtain contact pressure;
FPC / FFC connector with
The insulator has a pair of left and right rotation fulcrum protrusions located on both sides in the insertion direction to the insertion opening,
The slider has a pair of arm portions each having a recess for pivotally receiving the rotation fulcrum projection of the slider; and a pivoting motion centered on the rotation fulcrum projection, integrated with the pair of arm portions. An insertion pressing part inserted into and removed from the insertion opening;
The slider can release the engagement between the concave portion and the rotation fulcrum protrusion of the insulator in a rotation state in which the insertion pressing portion is separated from the insertion opening by a certain distance,
The slider and the insulator are brought into contact with each other after the slider is pivoted about the pivot fulcrum projection and the insertion pressing portion is inserted into the insertion opening and the insertion pressing portion starts to receive the elastic reaction force of the contact. receiving the elastic reaction Te, and the cam surface and the guide surface formed on the insulator formed in the slider is provided,
The cam surface includes a cylindrical surface centered on the rotational motion centered on the rotational fulcrum protrusion and a flat surface continuing to the cylindrical surface, and the guide surface serves as an insertion opening of the insulator for the insertion pressing portion of the slider. A connector for FPC / FFC, comprising a flat surface that comes into contact with this flat surface in a completely inserted state.  2. The FPC / FFC connector according to claim 1, wherein the slider and the insulator are provided with a lock portion that engages and locks the slider when the insertion pressing portion of the slider is inserted into a normal position in the insertion recess. / FFC connector.

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