JP6976006B1 - Connection aid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection assisting tool capable of pulling out an electric wire to two systems with one touch from an insertion port of one terminal board by a simple operation. SOLUTION: A conductive flat plate contact portion interposed between a first crimp terminal and a second crimp terminal introduced into a case main body through an insertion hole, and an insertion of the terminal board extending from the flat plate contact portion. A plug having a plug terminal to be inserted into the mouth, a first spring portion and a second spring portion of an elastic body supported by a base portion like a cantilever and facing each other at a predetermined distance, and the first spring portion and the above. In a state where the flat plate contact portion is housed in the substantially center of the second spring portion, the first spring portion is pressed to make the first crimp terminal and the flat plate contact portion conductive or to release the pressing. A second lever that makes the second lever conductive by pressing the second spring portion and the second crimp terminal and the flat plate contact portion by pressing the second spring portion, or making the flat plate contact portion non-conducting by releasing the pressing. A connection aid with a lever. [Selection diagram] Fig. 2

Description

The present invention relates to a connection assisting tool provided between a terminal board for accommodating an electric wire and a crimping terminal inserted therein and connecting the terminal board and the crimping terminal without modifying an existing terminal board. The present invention relates to the structure of a crimp terminal connection assisting tool capable of pulling out two lines of electric wires to which crimp terminals are connected from one insertion port with a simple operation with respect to a standard terminal board.

The terminal board is a stand for connecting the ends of electric wires, and is used for the purpose of electrically connecting a plurality of power lines or signal lines to each other. Therefore, the terminal board is provided with an input port and an output port, both of which are connected by a conductive metal base.

The end of the electric wire attached to the terminal board is rarely used as a bare wire, and usually a crimp terminal is attached to the end of the electric wire and the crimp terminal is connected by the terminal board. Typical crimp terminal shapes include round terminals (R-type terminals) and open-tip terminals (Y-type terminals). The R-shaped terminal is made of a washer-shaped annular thin plate having a circular hole in the center, and a neck portion is provided on the outside of a part thereof to connect an electric wire. The Y-shaped terminal is connected to an electric wire by providing a neck portion behind a horseshoe-shaped thin plate whose front is open.

Typical structures of the terminal board for connecting these crimp terminals include a screw tightening type terminal board and a screwless terminal board. The basic method of using the terminal board from the past is to connect the R-type terminal to the screw-tightened terminal board. In this method, a pressure welding plate having a circular hole is used, the circular hole of the R-shaped terminal and the circular hole of the pressure welding plate are aligned with each other, and the pressure welding plate is tightened with a screw to fix the R-shaped terminal.

The method of fixing the R-type terminal with this screw-tightening type terminal board has the problem that it takes a lot of time and effort to loosen the screw, remove the screw, insert the R-type terminal into the screw hole, and tighten the screw again. There is. Therefore, it is conceivable to use a Y-type terminal instead of the R-type terminal. In the case of a Y-shaped terminal, it is sufficient to loosen the screw to the extent that the terminal board can be slid into the gap between the two upper and lower pressure welding plates, and the labor of attaching and detaching the crimp terminal is considerably reduced.

However, inserting a crimp terminal into the terminal board is often done from the bottom because the wires in the terminal board are wired in the vertical direction, and because it is suitable for space and for organizing the wiring. Will be. For this reason, problems such as the Y-shaped terminal falling, the crimping terminal moving left and right, and being screwed diagonally sometimes occur.

Also, in the case of Y-shaped terminals, the force that restrains the terminals is weaker than that of round terminals, and when a strong pulling force acts on the wires, the wires will fall off unless the screws are tightened too strongly. There's a problem. Further, the screw type terminal board 100 has a problem that only crimp terminals suitable for the screw diameter can be connected.

For this reason, in recent years, in order to completely eliminate the trouble of screw tightening in the terminal board, a screwless terminal board has been proposed. For example, in Patent Document 1, the terminal fitting is pressed downward by a cam lever. , A lever-type terminal device for sandwiching a crimp terminal between the upper and lower pieces of a terminal fitting is disclosed.

Further, Patent Document 2 discloses a terminal block (and a method for manufacturing the terminal block) that presses a crimp terminal by a pressing force of a lever. This terminal block can rotate between the initial position and the standby position with a base that electrically connects to the terminal, a first urging member consisting of a leaf spring that urges the terminal toward the base, and stands by. It is equipped with a lever that pushes up the first urging member at the position.

In both the techniques described in Patent Document 1 and Patent Document 2, one crimp terminal is inserted into a certain place (one insertion port) of the terminal board and the electric wire is pulled out. However, there are cases where it is desired to pull out a plurality of electric wires from one insertion port of the terminal board and wire them to a plurality of systems. In such a case, in the screw tightening type terminal board, crimp terminals are connected to each electric wire, and the crimp terminals are overlapped and fastened to the terminal block. Therefore, as the number of wirings increases, not only a large number of crimp terminals are required, but also there is a problem that it is difficult to attach a plurality of crimp terminals to a narrow space of the terminal block.

Therefore, as shown in FIG. 8A, the technique described in Patent Document 3 is a crimp terminal having a plurality of crimp portions formed by branching from the side portion of the fastening portion to be fastened to the terminal block of the crimp terminal. Is disclosed. Each of the plurality of crimping portions is formed laterally on a plurality of projecting portions branching from the side portion of the fastening portion. By branching and forming a plurality of crimping portions at the fastening portion, it is possible to perform a plurality of wirings with one crimping terminal, and it is possible to improve the mounting density.

Further, as shown in FIG. 8B, the technique described in Patent Document 4 is a single mounting portion 1a in which a through hole 1c for fixing to a terminal block is formed, and a plurality of connections for crimping an electric wire. The portion 1b discloses a crimp terminal 1 integrally formed so as to branch from the mounting 1a.

According to the technique described in Patent Document 4, it is possible to reduce the types of crimp terminals for connecting a plurality of electric wires to one connection position of the terminal block. In addition, management is facilitated and workability can be prevented from deteriorating.

As described above, for the screw tightening type terminal board, a technique of drawing out a plurality of electric wires from one insertion port and wiring them to a plurality of systems is disclosed. However, with regard to the terminal board (lever type terminal board) that presses the crimp terminal by the pressing force of the lever, the so-called instantaneous tangential type terminal board, the technology to pull out multiple wires from a certain place (one insertion port) is currently available. Not disclosed.

Jikkai Sho 63-63868 Gazette Japanese Unexamined Patent Publication No. 2017-91729 Japanese Patent No. 2010-123291 Japanese Unexamined Patent Publication No. 2001-68180

Therefore, the subject of the present invention is to pull out the electric wires from the insertion port of one terminal board to two systems with one touch by a simple operation without modifying the existing standard lever type terminal board (instantaneous connection terminal board). It is to provide a connection aid that can be used.

In order to solve the above problems, the present invention comprises a case body through which a first crimp terminal and a second crimp terminal are inserted, and a case body.
A leaf spring that is supported as a cantilever by a base and has a first spring portion and a second spring portion of an elastic body facing each other at a predetermined distance, and is housed in the case body.
A plug having a flat plate contact portion interposed between the first spring portion and the second spring portion and a plug terminal extending from the flat plate contact portion and inserted into the insertion port of the terminal board.
The case body is capable of inserting and removing the first crimp terminal and the second crimp terminal by the first spring portion, the second spring portion, and the flat plate contact portion interposed between the first spring portion and the second spring portion. The first gap and the second gap formed,
A first that rotatably engages with the case body and presses the first spring portion to conduct the first crimp terminal and the flat plate contact portion, or releases the pressing to make the first non-conducting portion non-conducting. Lever and
A second that rotatably engages with the case body and presses the second spring portion to conduct the second crimp terminal and the flat plate contact portion, or releases the pressing to make the second spring portion non-conducting. Lever
It is a connection assisting tool, which is characterized by being equipped with.

The connection assisting tool of the present invention is provided with two crimp terminal insertion holes at the top and bottom as a basic structure, a flat plate contact portion contained in the case body, and a plug extending from the flat plate contact portion and inserted into the insertion port of the terminal board. It has a plug with a terminal. With the plug terminal inserted into, for example, a lever type terminal board (instantaneous connection terminal board), the two crimp terminals are inserted into the insertion holes, respectively. When the insertion holes are formed on the left and right, the plug terminal connected to the flat plate contact portion of the plug has a structure twisted by 90 degrees.

The first crimp terminal inserted through the insertion hole is inserted into the first gap, which is the gap between the first spring portion (upper spring portion) of the leaf spring and the flat plate contact portion, and the second crimp terminal is a plate. It is inserted into the second gap, which is the gap between the second spring portion (lower spring portion) of the spring and the flat plate contact portion. In such a state, when the upper spring portion is pressed by the first lever and the lower spring portion is pressed by the second lever, the first crimp terminal is electrically connected to the flat plate contact portion and the second crimping is performed. The terminal is electrically connected to the flat plate contact part. As a result, the electric wire connected to the first crimp terminal and the electric wire connected to the second crimp terminal, that is, two systems of electric wires can be pulled out from one insertion port of the lever type terminal board with one touch.

A space for ensuring the warp (vertical movement) of the upper spring portion and the lower spring portion is required on the surface on which the first gap and the second gap are formed, and the gap due to the space is required. Occurs. Therefore, it is necessary to prevent the crimp terminal from being erroneously inserted into an opening (gap) other than the insertion hole on the surface where the first gap and the second gap are formed. The auxiliary tool of the present invention is formed with a stopper for preventing such erroneous insertion.

Locking claws that fit into the notch of the crimp terminal are formed at the ends of the upper spring portion and the lower spring portion that press the crimp terminal inserted from the insertion hole. By fitting the locking claw into the notch, it is possible to prevent the crimp terminal from coming off (pulling out).

The locking claw has a substantially triangular prism shape, and one of the side surfaces thereof is configured to be joined to the upper spring portion and the lower spring portion, so that the side surface of the locking claw (projection) is inclined downward in the insertion direction. It becomes a face. As a result, even if the crimp terminal hits the locking claw, the insertion is not hindered (inserted along the inclination), and the insertion / removal into the insertion hole can be easily performed.

Further, the first lever and the second lever are formed with a rotation shaft and a protrusion that presses or releases the upper spring portion and the lower spring portion as the rotation shaft rotates. Further, the connection assisting tool includes a mounting frame portion for rotatably engaging the first lever and the second lever with the case body.

According to the connection assisting tool of the present invention, the electric wire can be pulled out from one insertion slot to at least two systems by a simple operation without modifying the existing standard lever type terminal board (instantaneous connection terminal board). It is possible to provide a connection aid that can be provided. Further, by connecting the connection assisting tool of the present invention in multiple stages, it is possible to draw out a plurality of electric wires and wire them in a plurality of systems.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings of Examples. FIG. 1 is a perspective view of a connection assisting tool 1 into which a crimp terminal 2 is inserted, which is an embodiment of the present invention. As shown in FIG. 1A, the connection assisting tool 1 has an insertion port into which two crimp terminals 2 can be inserted, a flat plate contact portion that contacts and presses on the crimp terminals 2, and a lever extending from the flat plate contact portion. It is provided with a plug having a plug terminal to be inserted into the type terminal board 3. FIG. 1B is a diagram showing how to use this connection assisting tool. By inserting the plug terminal of the connecting assisting tool 1 into a certain place (one insertion port) of the lever type terminal board 3, the lever type terminal is shown. It shows a state in which electric wires are pulled out from the board 3 to two systems with one touch.

FIG. 2 is an exploded perspective view of the connection assisting tool 1 according to the embodiment of the present invention. In FIG. 2, the connection assisting tool 1 holds the plug 15 in the center, and in a state where the plug 15 is held, a leaf spring forming gaps 133a and 133b (see FIG. 3) into which the crimp terminals 2 are inserted above and below the plug 15. 13. The upper lever 11a and the lower spring portion 131b of the leaf spring 13 that press the upper spring portion 131a (see FIG. 3) of the leaf spring 13 to contact and conduct the crimp terminal 2 and the plug 15 or release the pressing. (See FIG. 3) is pressed to make the crimp terminal 2 and the plug 15 contact and conduct, or the lower lever 11b to release the pressing, the case body 12 for storing these, and the lever 11 are rotatably attached to the case body 12. It is composed of a mounting frame portion 14 to be locked. The lever 11 is composed of a handle portion 112, a rotating shaft 111 formed at the end of the handle portion 112, and a protrusion 113 that presses the spring portion 131 of the leaf spring by the rotation of the rotating shaft 111.

FIG. 3 is a perspective view showing the internal structure of the connection assisting tool 1 which is an embodiment of the present invention through which the case body 12 is seen through. The lever 11 is rotatably locked to the case body 12 by the mounting frame portion 14. A gap 133a is formed between the upper spring portion 131a of the leaf spring 13 and the flat plate contact portion 152 of the plug 15, and a gap 133b is formed between the lower spring portion 131b and the flat plate contact portion 152. The crimp terminal 2 is inserted into the gap 133a and the gap 133b.

In FIG. 3A, on the surface of the case body 12 into which the crimp terminal 2 is inserted, in addition to the gap 133a and the gap 133b, between the upper spring portion 131a and the side surface of the case main body 12, and the lower spring portion. A predetermined gap is required between the 131b and the side surface of the case body 12, and such a gap appears as an opening on the insertion surface of the crimp terminal 2. Such a gap is generated as a space required for the vertical movement of the leaf spring 131 accompanying the insertion and removal of the crimp terminal 2. The upper stopper 132a and the lower stopper 132b prevent the crimp terminal 2 from being erroneously inserted into the opening.

FIG. 4 is a detailed view of the leaf spring 13 constituting the connection assisting tool 1 according to the embodiment of the present invention. FIG. 4A is a side view of the leaf spring 13, and FIG. 4B is a perspective view of the leaf spring 13.
As shown in FIG. 4A, the leaf spring 13 has a base portion 135 (upper base portion 135a, lower base portion 135b) as a fulcrum, and has an upper spring portion 131a of the flat plate and a lower spring portion 131b of the flat plate. A gap 133 is formed between the upper spring portion 131a and the lower spring portion 131b, and a gap 134 is formed on one side surface of the base portion 135.

Both the upper spring portion 131a and the lower spring portion 131b have an upper stopper 132a and a lower stopper 132b at their ends to prevent erroneous insertion of the crimp terminal 2. Further, the end portion thereof has a locking claw 136a on the upper side of a substantially triangular prism and a locking claw 136b on the lower side.

FIG. 5 is a diagram showing a structure in which the plug 15 is sandwiched between the leaf springs 13. As shown in FIG. 5A, the plug 15 is in contact with the plug terminal 151 inserted into the insertion port of the terminal board 3, the notch portion 154 into which the locking claw 136 of the leaf spring 13 is fitted, and the crimp terminal 2. A cut that fits into a joint column that is a part of the base 135 that is provided behind the gap 134 of the leaf spring 13 and the flat plate contact portion 152 that connects the upper spring portion 131a and the lower spring portion 131b. It has a chipped portion 153.
FIG. 5B is a diagram showing a connection assisting tool 1 in a state where the plug 15 is fitted to the leaf spring 13. The plug 15 is inserted through the gap 133 and the gap 134, and the notched portion 153 of the plug 15 is fitted and fixed to the joint column which is a part of the base portion 135 of the leaf spring 13.

FIG. 6 is an enlarged perspective view of the back surface (crimp terminal insertion surface) of the case body 12 into which the crimp terminal 2 is inserted into the connection assisting tool 1 which is an embodiment of the present invention. The crimp terminal is inserted into the gap 133a between the upper spring portion 131a and the flat plate contact portion 152 and the gap 133b between the lower spring portion 131b. An opening is formed above the upper spring portion 131a and below the lower spring portion 131b, and the stopper 132a and the stopper 132b prevent the crimp terminal from being erroneously inserted into the opening.

FIG. 7 is an enlarged perspective view of a state in which the crimp terminal 2 is inserted into the connection assisting tool 1 which is an embodiment of the present invention. The terminals 20a and 20b of the crimp terminals 2a and 2b are inserted above and below the flat plate contact portion 152. In FIG. 7, the lever 11a is in a state of releasing the pressing, but by tilting the lever 11a in the clockwise direction (to the right in FIG. 7), the protrusion 113a is rotated in the clockwise direction due to the rotation of the rotation shaft 111a. It rotates and presses the spring portion 131a to contact and conduct the terminal 20a and the flat plate contact portion 152. An upward force acts on the lever 11 by pressing the protrusion 113a, but the mounting frame portion 14a prevents the lever 11 from rising.

When the lever 11a in the pressed state (tilted state) is released (inverted state), the pressed state is released by the restoring force (leaf spring) of the spring portion 131a protruding from the base 135, and the crimp terminal 2 is easily crimped. Can be pulled out. The crimp terminal 2b also operates in the same manner by the same operation.

It is a perspective view of the connection assisting tool 1 which is an Example of this invention. It is an exploded perspective view of the connection assisting tool which is one Embodiment of this invention. It is a perspective view which showed the internal structure of the connection assisting tool 1 which is one Embodiment of this invention which made the case main body 12 see through. It is a detailed view of the leaf spring which comprises the connection assisting tool 1 which is one Embodiment of the invention. It is a figure which showed the structure which the plug 15 is sandwiched by a leaf spring 13. It is an enlarged perspective view of the back surface (crimp terminal insertion surface) of the case body 12 in which a crimp terminal 2 is inserted into the connection assisting tool 1 which is an embodiment of the present invention. It is an enlarged perspective view of the state where the crimp terminal 2 is inserted in the connection assisting tool 1 which is one Embodiment of this invention. It is a figure which showed the prior art which connects a plurality of crimp terminals to the insertion opening of a terminal board.

1: Connection aid
2: Crimping terminal 3: Lever type terminal board 11: Lever 11a: Upper lever 11b: Lower lever 12: Case body 13: Leaf spring 14: Mounting frame portion 15: Plug 111: Rotating shaft 112: Handle portion 113: Protrusion 131 : Spring part 132: Stopper 133 134: Gap 135: Base 136: Locking claw 151: Plug terminal 152: Flat plate contact part 153 154: Notch part

Claims (4)

The case body through which the first crimp terminal and the second crimp terminal are inserted,
A leaf spring that is supported as a cantilever by a base and has a first spring portion and a second spring portion of an elastic body facing each other at a predetermined distance, and is housed in the case body.
A plug having a flat plate contact portion interposed between the first spring portion and the second spring portion and a plug terminal extending from the flat plate contact portion and inserted into the insertion port of the terminal board.
The case body is capable of inserting and removing the first crimp terminal and the second crimp terminal by the first spring portion, the second spring portion, and the flat plate contact portion interposed between the first spring portion and the second spring portion. The first gap and the second gap formed,
A first that rotatably engages with the case body and presses the first spring portion to conduct the first crimp terminal and the flat plate contact portion, or releases the pressing to make the first non-conducting portion non-conducting. Lever and
A second that rotatably engages with the case body and presses the second spring portion to conduct the second crimp terminal and the flat plate contact portion, or releases the pressing to make the second spring portion non-conducting. A connection aid characterized by being equipped with a lever. The crimp terminal is inserted into an opening other than the first gap and the opening other than the second gap, which are opened in the insertion surface of the crimp terminal of the case body through which the first crimp terminal and the second crimp terminal are inserted. The connection assisting tool according to claim 1, wherein a stopper for preventing erroneous insertion is formed. The first lever and the second lever have a rotation shaft and a protrusion for pressing the first spring portion as the rotation shaft rotates, respectively, and the second lever has a protrusion. The connection assisting tool according to claim 1 or 2, wherein the lever of the above has a protrusion for pressing the second spring portion . The connection assisting tool according to any one of claims 1 to 3, further comprising a mounting frame portion for rotatably engaging the first lever and the second lever with the case body .

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