JPH0963720A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a dropping-out of a tape film by installing the tape film having protruding pieces protruded to both lateral sides in the top part to a frame in the state where both the protruding pieces are fitted to notched grooves. SOLUTION: A frame 3 in which a substantially T-shaped tape film 4 having protruding pieces 4b protruded from both lateral sides in the top part are installed by guiding both lateral sides of the tape film by guide walls 3c, 3d in the state where both the protruding pieces 4b are fitted to notched grooves is installed to a body 1. The contact part of the tape film 4 makes contact with the contact piece 2a of a contact by being pressed by the flat surface 3a of the frame 3, or with no inserting force. Even when pulled in repairing, the tape film 4 is never pulled out from the connector 1 since both the protruding pieces 4b are engagingly locked by the notched groves to prevent the carbon of the conductive part from being shaven by the contact piece 2a of the contact, nor is caused a contact failure in reinstallation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape film connector used for a keyboard of a personal computer or the like for connecting a tape film made of a flexible printed circuit board or the like.

[0002]

2. Description of the Related Art Generally, when a tape film made of a flexible printed circuit board or the like is connected to a connector, a so-called ZIF (zero insertion force) is used to prevent damage to the tape film when it is inserted. A structure is required, and conventionally, as this type of connector, there is a connector having a configuration shown in FIGS. 8 and 9.

As shown in FIG. 8, a slider B is provided on a main body A having contacts, and a tape film C is inserted into the main body A with the slider B pulled out from the main body A. Then, as shown in FIG. 9, when the slider B is pushed into the main body A, the slider B presses the tape film C against the contact in the main body A, that is, with no insertion force, the slider B is formed on the surface of the tape film C. The formed conductive portion abuts and is connected to the contact piece of the contact, and the lock portion E provided on the slider B is engaged with the protrusion D formed on the outer surface of the main body A to be locked. Has become.

[0004]

In the above-mentioned conventional connector, the tape film C can be loaded into the main body A without requiring insertion force, the tape film C is not damaged, and the contact piece of the contact and the tape are not damaged. The connection with the conductive portion of the film C can be stably and reliably performed.

However, when the tape film C is pulled during repairing or the like, it is removed from the connector and the conductive carbon printed on the tape film C is scraped by the contact piece of the contact, so that the tape film C is reloaded into the connector. At this time, contact failure may occur between the conductive portion of the tape film C and the contact piece of the contact.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connector in which a tape film does not come off even if it is pulled during repair or the like.

[0007]

In order to solve the above-mentioned problems, according to a first aspect of the present invention, a main body, a contact fixed to the main body with a lead-out contact piece and an external connection piece, and a tape. A frame having a flat surface for guiding the tape film on one contact side of the contact and two guide walls for guiding both width sides of the film, and the frame loaded with the tape film being guided by the both guide walls. A tape film, which is pressed by a flat surface of the frame by being mounted on the main body, is a connector for bringing a conductive part of the frame into contact with a contact piece of the contact, and the frame has a notch in a width direction of the tape film. The notched groove is provided on both of the guide walls at the most distal end of the tape film.

According to a second aspect of the present invention, in the first aspect of the present invention, the frame is provided with the notch grooves in the guide walls on both sides of the flat surface side and the opposite surface side. I am doing it.

According to a third aspect of the present invention, in the first aspect, the contact piece and the external connection piece to be soldered to the printed circuit board are respectively led out from one side and the other side of the main body. Then, the fixing metal fitting fixed to the printed circuit board on one side thereof is provided on the main body.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. This connector includes a main body 1, contacts 2, and a frame 3.

The main body 1 is formed of an insulating resin into a substantially rectangular parallelepiped shape, and a plurality of contacts 2 to be described later are arranged and fixed in a row along the longitudinal direction, and a contact piece 2a of the contact 2 is provided on one side 2 thereof. An individual fixing metal fitting 1a is provided, and an accommodation space 1b for accommodating a frame 3 to be described later, which is opened on one side, is provided, and locking metal fittings 1c are provided on both side surfaces in the longitudinal direction.

The contact 2 is bent at a substantially right angle by a conductive metal made of copper or a copper alloy, and is soldered to a contact piece 2a and a printed circuit board (not shown) which come into contact with a tape film 4 described later. The connection piece 2b is provided, and the contact piece 2a is provided on one side of the main body 1 as the external connection piece 2a.
A plurality of columns are fixed in a row along the longitudinal direction of the main body 1 so as to lead out b to the other side.

The frame 3 is formed of an insulative resin into a substantially rectangular parallelepiped shape, and has a flat surface 3a on the side of the contact piece 2a of the contact 2 along which a tape film 4 to be described later and an opposite surface 3b are provided. , 3b, on both sides of the tape film 4, both guide walls 3c, 3 for guiding both sides of the width of the tape film 4.
d is provided on each of the guide walls 3c and 3d, and at both inner corners on one end side, which is the position of the most distal end when the tape film 4 is loaded, in the width direction of the tape film 4, that is, the flat surface 3a. Further, notched grooves 3e and 3f are provided along the opposite surface 3b. In addition, projections 3g that engage with the locking fittings 1c of the main body 1 are provided at both ends in the longitudinal direction.

The tape film 4 loaded in the connector is a flexible printed circuit board or the like made of a flexible resin film, and protruding pieces 4b protruding from both width sides are provided at the position of the most distal end portion 4a. It is formed in a T shape and has one surface 4c and the other surface 4d which is the opposite surface thereof,
On both surfaces 4c, 4d, a plurality of belt-shaped conductive portions 4e, on which carbon is printed, are formed in a row in the width direction.

In the tape film 4, as shown in FIG. 2, the protruding pieces 4b provided on both sides of the width of the most distal end portion 4a are fitted into the cutout grooves 3e provided on the flat surface 3a side of the frame 3. After being guided by the guide walls 3c on both sides of the width of the tape film 4 and following the flat surface 3a, the tape film 4 is curved and folded back into a substantially U shape, and further guided by the guide wall 3d and passed through the opposite surface 3b. And is loaded into the frame 3.

In this way, the tape film 4 is guided by the guide walls 3c and 3d and loaded into the frame 3
Is mounted in the accommodation space 1b opened to the contact piece 2a side of the contact 2 of the main body 1, and the locking metal fitting 1c of the main body 1 is engaged with the protrusion 3g of the frame 3, the flat surface 3a of the frame 3
The tape film 4 pressed by makes the conductive portion 4e formed on the one surface 4c thereof contact the contact piece 2a of the contact 2.

Here, the tape film 4 may be loaded as shown in FIG. That is, the protruding pieces 4 b provided on both sides of the width of the most distal end portion 4 a are provided on the opposite surface 3 of the frame 3.
It is fitted in the notch groove 3f provided on the b side, is guided on both sides of the width of the tape film 4 by the guide wall 3d, is bent back into a substantially U shape via the opposite surface 3b, and is further guided by the guide wall 3c. When the frame 3 is loaded on the frame 3 along the flat surface 3a by being guided by, and the frame 3 is mounted on the main body 1, the tape film 4 pressed by the flat surface 3a of the frame 3 is formed on the other surface 4d. The conductive portion 4e is brought into contact with the contact piece 2a of the contact 2.

As described above, the tape film 4 can be attached to the connector with no insertion force. Therefore, this connector has a so-called ZIF structure in which it is connected with no insertion force.

The external connection piece 2b of the contact 2 led out to the other side of the body 1 is soldered to a printed circuit board (not shown), and the two fixing portions of the body 1 provided on the one side where the contact piece 2a is led out. The metal fitting 1a is similarly fixed to the printed board by soldering.

From the circuit portion (not shown) to the tape film 4
The signal transmitted to the conductive portion 4e of the contact 2a of the contact 2 that is brought into contact with the conductive portion 4e and is led to one side of the main body 1
And via the external connection piece 2b led out to the other side of the main body 1 to the printed board (not shown) solder-connected to the external connection piece 2b.

In such a connector, as described above, if the tape film 4 having a substantially T-shape with the tip end portions 4a having the protruding pieces 4b protruding from both sides of the width is used, When the both sides of the width are guided by the guide walls 3c and 3d while the protruding pieces 4b are fitted in the cutout grooves 3f and the frame 3 loaded with the tape film 4 is mounted on the main body 1, the flat surface 3a of the frame 3 By being pressed, that is, with no insertion force, the tape film 4
However, since the conductive portion 4e is brought into contact with the contact piece 2a of the contact 2 and the protruding pieces 4b are locked in the notch groove 3f even if the tape film 4 is pulled during repair or the like, the tape film 4 Does not come off from the connector, so that the conductive carbon printed on the conductive portion 4e is not scraped off by the contact piece 2a of the contact 2 as in the conventional case, and the tape film 4 is reloaded into the connector. Then, the conductive portion 4 of the tape film 4
No contact failure occurs between e and the contact piece 2a of the contact 2.

The cutout grooves 3e and 3f are formed on both sides 3a and 3b of the flat surface 3a side of the frame and the opposite surface 3b side thereof.
Since both of the guide walls 3c and 3d are fitted into the notch grooves on either one of the flat surface 3a side or the opposite surface 3b side, the protruding pieces 4b are substantially U-shaped to the other surface side. When the frame 3 loaded with the tape film 4 is mounted on the main body 1 in the state of being folded back in a letter shape, the tape film 4 has the conductive portion 4e formed on either one surface 4c or the other surface 4d of the contact piece 2a. , That is, without inverting both sides 4c and 4d of the tape film 4,
It is possible to realize a connector that can connect the conductive portions 4e on both surfaces 4c and 4d to the contact piece 2a.

Further, since the fixing metal fitting 1a is provided on the main body 1 and fixed to the printed circuit board on one side of the main body 1 from which the contact piece 2a of the contact 2 is drawn out, the frame 3 is attached to one side of the main body 1. Even if an external force is applied to the other side of the main body 1, since it is supported by the fixing metal fitting 1a on one side, bending stress is applied to the external connecting piece 2b that is soldered to the printed circuit board and led to the other side of the main body 1. No external force such as
The external connection piece 2b can be protected.

In this embodiment, the cutout grooves 3e,
Although 3f is provided on the guide walls 3c and 3d on both sides of the flat surface 3a of the frame 3 and the opposite surface 3b thereof, when the conductive portion 4e formed on the tape film 4 has only one surface, the flat surface 3a is formed. It is not limited only by itself.

Further, in this embodiment, the tape film 4 is used.
Is bent into a U-shape and folded back to form the frame 3
However, the frame 3 may be mounted on the main body 1 so that the cutout groove 3e is located on the side of the fixing metal fitting 1a without being curved only along the flat surface 3a.

Further, in this embodiment, the fixing metal fitting 1 fixed to the printed circuit board on the one surface side from which the contact piece 2a is drawn out.
Two a are provided in the main body 1, but when the external force when mounting the frame 3 to the main body 1 is weak, the fixing metal fitting 1 a may not be provided, and three or more may be provided, and the number is not limited.

[0027]

According to the first aspect of the present invention, when a tape film having a substantially T-shaped tip portion having protruding portions protruding from both sides of the width is used, both the protruding portions are cut. When the frame loaded with the tape film is mounted on the main body by guiding the both width sides to the guide wall in the state of being fitted in the notch groove, by being pressed by the flat surface of the frame,
In other words, with no insertion force, the tape film makes its conductive portion contact the contact piece of the contact, and even if the tape film is pulled during repair or the like, both protruding pieces are locked in the notch groove, The tape film does not come off from the connector, so the conductive carbon printed on the conductive part is not scraped by the contact piece of the contact as in the past, and when the tape film is reloaded into the connector. Also, no contact failure will occur between the conductive portion of the tape film and the contact piece of the contact.

According to the second aspect, in addition to the effect of the first aspect, the notch grooves are provided in both guide walls on the flat surface side and the opposite surface side of the frame, After fitting both protruding pieces into the cutout grooves on either the flat surface side or the opposite surface side, the frame loaded with the tape film is attached to the main body with the tape folded back to the other surface side. By doing so, the tape film can bring the conductive part formed on either one side or the other side into contact with the contact piece, that is, without causing both sides of the tape film to be inverted, the conductive part on both sides can be contacted. It is possible to realize a connector that can be connected to.

According to a third aspect of the present invention, in addition to the effect of the first aspect, a fixing fitting is provided on the main body on one side of the main body from which the contact piece of the contact is drawn out and is fixed to the printed circuit board. Therefore, even when an external force is applied to the other side of the main body when the frame is attached to one side of the main body, it is supported by the fixing metal fittings on one side, so it is soldered to the printed circuit board and led to the other side of the main body. External force such as bending stress does not act on the external connection piece, and the external connection piece can be protected.

[Brief description of drawings]

FIG. 1 is a partial front sectional view showing an embodiment of the present invention.

FIG. 2 is a left side sectional view showing a state in which one surface of the above tape film is connected to a contact piece.

FIG. 3 is a left side sectional view showing a state in which the other surface of the above tape film is connected to a contact piece.

FIG. 4 is a front view of the frame.

FIG. 5 is a bottom view of the above frame.

FIG. 6 is a partial perspective view of the above frame.

FIG. 7 is a perspective view of a tip portion of a tape film used in the above-mentioned one.

FIG. 8 is a side view showing a state before loading a tape film of a conventional example.

FIG. 9 is a side view showing a state after loading the above tape film.

[Explanation of symbols]

 1 Main body 1a Fixing metal fitting 2 Contact 2a Contact piece 2b External connection piece 3 Frame 3a Flat surface 3b Opposite surface 3c, 3d Guide wall 3e, 3f Notch groove 4 Tape film 4a Cutting edge part 4e Conductive part

Claims (3)

[Claims] 1. A main body, a contact fixed to the main body having a lead-out contact piece and an external connection piece, two guide walls for guiding both width sides of the tape film, and a tape film along the contact piece side of the contact. A frame having a flat surface that allows the tape film to be pressed by the flat surface of the frame by mounting the frame in which the tape film is loaded by guiding the guide walls to the guide walls. A connector for bringing the conductive portion into contact with the contact piece of the contact, wherein the frame has notch grooves cut out in the width direction of the tape film provided on the both guide walls at the tip of the tape film. A connector characterized in that 2. The connector according to claim 1, wherein the frame is provided with the cutout grooves in the guide walls on both sides of the flat surface side and the opposite surface side. 3. The contact piece and the external connection piece to be soldered to the printed circuit board are respectively led out from one side and the other side of the main body, and are fixed to the printed circuit board at one side thereof. The connector according to claim 1, wherein a fixture is provided on the main body.