JPS6328525Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a pressure contact connector in which lead wires to be connected are connected by pressure contact.

In contrast to conventional receiving connectors that are attached to printed circuit boards, for example, in connectors configured to connect core wires of flat cables, especially if the flat cable to be connected is of a removable configuration, The structure was such that the coating was removed to expose the core wires to the outside, and the core wire lead-out terminals of the receiving connector were brought into contact with the exposed core wires.

In this conventional connector, it is necessary to remove the sheath of the flat cable to expose its core wires, and to align the distance between the core wires at a constant distance at the end positions, making the connection operation difficult. Moreover, the contact resistance obtained during connection may not be constant, and a stable connection may not be achieved. Furthermore, a large pressure contact force of 4 to 5 kg per core wire is required for the pressure connection, and the connection operation requires a large pressure contact force, making it impossible to perform the connection operation smoothly.

This invention solves these problems with conventional connectors, and eliminates the need to remove the coating from the flat cable when connecting, and there is no need to align the core wires at the end positions when connecting the connector, making the connection operation simple. To provide a pressure welding connector that can realize smooth connection with a small rotational force, and allows the connection terminal of the connector to bite into the core wire of a flat cable during connection, allowing connection under stable contact resistance conditions. It is something.

In this device, a terminal is attached to the main body, which has a bifurcated blade in which the sheath of the lead wire to be connected is cut and an internal core wire is inserted and contacted therebetween. A lead wire holder is rotatably held in the main body. A rotation fulcrum is provided at one end of the lead wire holder, and the lead wire holder is rotatably held relative to the main body while being engaged with the main body.

Further, a guide body for guiding the lead wire held from one end on the rotation fulcrum side of the lead wire holder to the opposite end side, and a lead wire inserted between the guide body and the rotation fulcrum side. A plate-shaped holder having a guide hole is formed, and the lead wire to be connected can be held. Furthermore, by positioning the bifurcated blade between the rotation fulcrum and the other end of the lead wire holder and rotating the lead wire holder while holding the lead wire to be connected, the core wire of the lead wire to be connected will be split in two. Engagement means is provided that is press-fitted between the pronged blades so that it can be placed in contact with the bifurcated blades, and that engages the lead wire holder at a rotational position with the main body so that it can be removed.

Therefore, in the pressure welding connector of this invention,
No need to remove the flat cable sheath,
With a single touch, a lead wire to be connected, such as a flat cable, can be connected under stable contact resistance conditions, and the connection can be easily released if necessary.

Hereinafter, the pressure-connecting connector of this invention will be described in detail based on its embodiments with reference to the drawings.

FIG. 1 is a diagram showing the structure of an embodiment of the pressure-connecting connector of the present invention, in which a substantially rectangular plate-shaped main body 11 is formed of an electrically insulating material such as a synthetic resin material.
Both edges in the longitudinal direction of the main body 11 are bent in the same direction at right angles to the plate surface to form side plates 12-1, 12-2. are connected to form the end plate 12-
3 is formed.

This end plate 12-3 has a plate surface 11-F of the main body 11.
A rectangular opening 13 is formed along. A fitting opening 14- is provided on the plate surface 11-F in a direction perpendicular to the opening 13.
1, 14-2 are formed. Plate surface 11 of main body 11
-F is made thinner on the side opposite to the opening 13, and a stepped surface 15 is formed at the boundary position. Attachment grooves 16-1 to 16-5 are formed parallel to the longitudinal direction of the plate surface 11-F from this step surface 15, and each of these attachment grooves 16-1 to 16-5 has a terminal with a forked blade. 17-1 to 17-5 are attached. In the embodiment, mounting grooves 16-1, 16-3, 1
The groove lengths of 6-5 are the same and long, and the mounting groove 1
The groove lengths 6-2 and 16-4 are formed to be the same length and shorter.

As shown in FIG. 2, the terminals 17-n (n=1, . . . 5) are formed by bending the end of a plate-like conductor plate at right angles to the plate surface, and attaching a bifurcated blade 18-n ( n=1,...
...5) is formed. Bifurcated blade 1 of terminal 17-n
The end portion opposite to 8-n is formed to have a narrow width. An insertion groove is formed along the plate surface of the mounting grooves 16-1 to 16-5 to penetrate the plate surface 11-F of the main body 11 to the end on the opening 13 side, and the terminal 17- is inserted into the insertion groove. 1 to 17-5 are inserted and fixed.
The terminals 17-1 to 17-5 are inserted into the insertion grooves, and the respective bifurcated blades 18-1 to 18-5 are positioned on the end plate of the mounting grooves 16-1 to 16-5 on the opening 13 side. Connect terminal 1 to main body 11 in such a way that
7-1 to 17-5 are attached. Also, main body 1
There is an opening 15 at the center of the step surface 15 side end of 1.
-H is formed.

On the other hand, a substantially plate-shaped lead wire holder 20 is formed of an electrically insulating material such as synthetic resin. Block-shaped fulcrum portions 21-1 and 21-2 are formed protruding from the side edge of one end of the lead wire holder 20 in parallel to the plate surface. The surfaces of the fulcrum portions 21-1 and 21-2 on one end side of the lead wire holder 20 are formed into curved surfaces. At one end side of the lead wire holder 20,
Approximately rectangular parallelepiped engaging bodies 22-1, 2 perpendicular to the plate surface
2-2 is formed protrudingly, and each engaging body 22-
Engagement pieces 23-1, 23-2 protrude parallel to the plate surface of the lead wire holder 20 at the ends of the leads 1 and 22-2.
is formed.

These engaging bodies 22- of the lead wire holder 20
The end opposite to 1 and 22-2 is bent at right angles to the plate surface to form a guide body 24, and this guide body 24 has a recess 25- in the longitudinal direction of the lead wire holder 20.
1 to 25-5 are formed.

A plate-shaped holder 26 is attached at approximately the center of the lead wire holder 20 at right angles to the plate surface. This holder 26 is formed into a substantially rectangular plate shape with the lead wire holder 20 side being slightly narrower than the longitudinal width of the lead wire holder 20, and a cut groove 27 parallel to the plate surface of the lead wire holder 20 is formed at the center of the holder 26. A guide hole 28-1 is formed along this cut groove 27.
~28-5 are formed. A portion of the holding body 26 remote from the lead wire holder 20 is formed narrowly, and an engaging piece 29 is formed at the end thereof in a direction perpendicular to the plate surface.

A semi-cylindrical support 30 is integrally formed on the plate surface of the lead wire holder 20 between the holder 26 and the engaging pieces 23-1, 23-2 and protrudes in the same direction as the holder 26. This support 30 has an insertion hole 31
-1, 31-3, 31-5 are on a straight line, and the insertion holes 31-2 and 31-5 are on another straight line that is shifted from this straight line.
31-4 is formed. Also, lead wire holder 2
0 and the main body 11 are connected to the connecting string 3 according to the necessity of use.
Connected by 2.

When the lead wire holder 20 is rotatably held relative to the main body 11, as is clear from FIG.
The ends on the 2-1 and 22-2 sides are inserted into the opening 13. In this inserted state, the fulcrum parts 21-1, 21-2
are located on the respective end sides of the side plate 12-3, and the engaging pieces 23-1, 23-2 of the engaging bodies 22-1, 22-2 are respectively located on the fitting opening 14.
-1, 14-2 position, end plate 1 of main body 11
It engages with the side edge of 2-3.

Furthermore, when the rotation of the lead wire holder 20 is completed, the engagement piece 29 of the holder 26 is attached to the main body 11.
It is configured such that it can be inserted into the opening 15-H of the step surface 15 and engage with the back surface of the plate surface 11-F. Also, at the completed position of this rotation, the bifurcated blade 18-
1, 18-3, 18-5 are insertion holes 31-, respectively.
In 1, 31-3, 31-5, there is also a bifurcated blade 18
-2 and 18-4 are insertion holes 31-2 and 31 respectively
-4, the main body 11 and the lead wire holder 20 are configured to be inserted into the main body 11 and the lead wire holder 20.

When the flat cable 35 is attached and connected, the connecting end of the flat cable 35 is positioned on the guide body 24 and passed through the cut groove 27, and then the support body 30 is inserted.
the connecting end of the flat cable 35 to the substantially engaging members 22-1, 22-2 of the support 30.
Guide it to the end position on the side and position it. In this arrangement, the core wires of the flat cable 35 are arranged so as to be located above the insertion holes 31-1 to 31-5, respectively.

On the other hand, although the main body 11 is not shown, for example, each terminal 17-1 to 1 is connected to a printed circuit board.
7-5 at the corresponding connection point, and attach the side plate 1.
Holding piece 12- formed on 2-1, 12-2
It is fixedly arranged by 1t and 12-2t. The lead wire holder 20 is attached to the fulcrum portions 21-1, 21-2 with respect to the main body 11 fixedly disposed on this printed circuit board.
Engagement pieces 23-1, 23- can be rotated on the curved surface portions of
2 to engage. In this engaged state, the engaging piece 2
9 is the flat cable 3 which has not yet been inserted into the opening 15-H and is mounted on the support 30.
5 and each of the bifurcated blades 18-1 to 18-5 are in a non-contact state.

Next, attach the plate surface of the lead wire holder 20 to the main body 11.
When rotated to approach plate surface 11-F,
The bifurcated blades 18-1 to 18-5 each have an insertion hole 3.
1-1 to 31-5, and the sheath of the flat cable 35 is inserted into the bifurcated blades 18-1 to 18-5.
The core wires of the flat cable 35 are respectively pinched by the forked portions of the bifurcated blades 18-1 to 18-5 and electrically connected to the bifurcated blades 18-1 to 18-5. .

In addition, at this rotation completion position, the engagement piece 29
is inserted into the opening 15-H, and the plate surface 1 of the main body 11
1-F is held from the back surface thereof, and the main body 11 and the lead wire holder 20 are fixedly attached by the engaging piece 29. In the fixed mounting state, the engaging piece 29 of the holding body 26 and the engaging piece 2 of the engaging bodies 22-1, 22-2
3-1 and 23-2 engage and fix the main body 11 and the lead wire holder 20, and furthermore, the protrusions 12 formed on the side plates 12-1 and 12-2 of the main body 11
-11t, 12-22t and lead wire holder 20
Recesses 24-D1, 24- formed at the ends of
By fitting and fixing D2, the lead wire holder 20 is firmly attached and fixed to the main body 11.

Since the mounting operation is a rotational operation around the fulcrum parts 21-1 and 21-2, the flat cable 35 will change with respect to the distance from the rotational fulcrum of the end position of the lead wire holder 20 to which rotational force is applied. Because the distance from the rotational fulcrum of the bifurcated blades 18-1 to 18-5 that applies pressure contact force to the core wires of The pressure contact force applied to the core wire of the power cable 35 increases.

Therefore, a small turning force is applied to the lead wire holder 20.
By applying pressure to the end of the cable, the flat cable 35 can be connected with a large pressure contact force. For example, if this distance ratio is set to 5:1, for example, when using a flat cable 35 with five core wires, where the pressure contact force required for one core wire is 4 kg,
The connection can be made with a small operating force of 4 kg, compared to the 20 kg that was previously required.

In the press-connecting connector of this invention, the detachment operation of the flat cable 35 is also easily performed. That is,
When the lead wire holder 20 is rotated about the fulcrum portions 21-1 and 21-2 in the direction away from the main body 10 from the state where the lead wire holder 20 is attached to the main body 10, the engagement piece 29 of the holder 26 and Main body 11
The engagement with the side edge of the end plate 12-3 is released, and the bifurcated blades 18-1 to 18-5 are inserted into the insertion holes 31-1 to 31-3.
Pulled out from within 1-5. flat cable 3
5 is penetrated by the cut groove 27 and is held by the lead wire holder 20, so that the bifurcated blades 18-1 to
When 18-5 is pulled out from the insertion holes 31-1 to 31-5, the contact between the core wire of the flat cable 35 and the forked blades 18-1 to 18-5 is broken, and the flat cable 35 and the terminal are separated. Electrical contact with 17-1 to 17-5 is released.

This disconnection operation is also performed with a relatively small force and by simply rotating the lead wire holder 20 with a single touch. Furthermore, by simply arranging the lead wires 35 to be connected with their ends aligned on the support body 30, electrical connection with the corresponding core wires using the bifurcated blades 18-1 to 18-5 can be realized without any operational errors. It is.

In the embodiment, a structure in which the lead wire holder 20 is rotatably held with respect to the main body 11 has been described, but the lead wire holder 20 may be separate and may be rotatably attached to the main body 11. Good if possible.

The shape of the terminal 17-n is not limited to that shown in the embodiments, and for example, as shown in FIG.
A structure in which side plates 17n-S1 and 17n-S2 are integrally formed on both sides of the plate surface of the terminal 17-n along the longitudinal direction of the terminal 17-n, or a structure in which the terminal 17-n is press-fitted into the main body 11 are also realized. It is possible. In this case, although not shown, these side plates 17n-S are attached to the plate surface 11-F of the main body 11 along the mounting groove 16-n.
1 and 17n-S2 are inserted into a fixing groove in which the terminal 17-n is fixed to the main body 11.

Furthermore, in the embodiment, a multi-core flat cable was used as the lead wire to be connected, but
The lead wire to be connected is not limited to a flat cable, but may also be a single-core coated lead wire.

As explained in detail above, this invention has a simple structure, eliminates the need to remove the covering of the lead wires to be connected, and allows the lead wires to be reliably connected with a simple one-touch operation using a small rotational force. It becomes possible to provide a press-contact connector that can be easily disconnected and disconnected.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the configuration of an embodiment of the insulation displacement connector of this invention, FIG. 2 is a diagram showing the shape of the terminal used in the embodiment of the insulation displacement connector of this invention,
3 is a diagram showing another shape of the terminal used in the embodiment of the pressure welding connector of this invention, FIG. 4 is a diagram showing the connection process of the lead wire to be connected in the embodiment of the pressure welding connector of this invention, and FIG. The figure is a diagram showing the connection state of the lead wires to be connected in an embodiment of the pressure welding connector of this invention. 11: Main body, 13: Opening, 14-1, 14-
2: Fitting port, 15: Stepped surface, 16-1 to 16-5:
Mounting groove, 17-1 to 17-5: Terminal, 18-1 to
18-5: bifurcated blade, 20: lead wire holder,
22-1, 22-2: engaging body, 23-1, 23-
2: Engaging piece, 24: Guide body, 26: Holding body, 2
7: Cut groove, 29: Engagement piece, 30: Support body, 31-
1 to 31-5: Insertion holes.

Claims (1)

[Scope of utility model registration request] a main body, a terminal attached to the main body and having a fork-like blade between which the sheath of a lead wire to be connected is cut and an internal core wire is inserted into contact therebetween; and a terminal opposite to the protruding direction of the fork-like blade of the terminal. a lead wire holder configured to be rotatably held in the main body; and a lead wire holder provided at one end of the lead wire holder to rotatably hold the lead wire holder while engaged with the main body. A rotation fulcrum portion provided as shown in FIG.
A guide body provided at the other end of the lead wire holder to guide the lead wire held by the lead wire, and a guide hole provided between the guide body and the rotation fulcrum portion through which the lead wire is inserted. a plate-shaped holder having
a support provided between the plate-like holder and the rotation fulcrum and having an insertion hole into which the bifurcated blade is inserted; When the forked blade is positioned in the middle of the forked blade and the lead wire holder is rotated while holding the lead wire to be connected, the core wire of the lead wire to be connected is press-fitted between the forked blades. disposed in contact with the bifurcated blade and removed in that state;
A press-connecting connector comprising: engaging means for engaging the rotational position of the lead wire holder with the main body.