JP5537985B2 - Crimp terminal holder mounting structure - Google Patents

Description

The present invention relates to a mounting structure for the circuit breaker of the crimp terminal formate Da for holding the crimp terminal.

  Conventionally, as a crimp terminal holder for holding a crimp terminal attached to the tip of an electric wire, what is indicated in patent documents 1 is devised. This crimp terminal holder is made by drilling a holding hole in the same shape as the crimped portion of the crimp terminal into a block body made of synthetic resin. By inserting the crimp terminal into the holding hole of the block body, When connecting to a container, the crimp terminal can be held in a desired orientation.

JP 2004-6184 A

  As a method of connecting the crimp terminal to the circuit breaker through the crimp terminal holder, after first attaching the crimp terminal holder to the circuit breaker side, the first method of inserting the crimp terminal through the crimp terminal holder; There is a second method in which after the crimp terminal is held in the crimp terminal holder, the crimp terminal is inserted into the quick connection terminal of the circuit breaker together with the crimp terminal holder. However, when the crimp terminal holder of Patent Document 1 is used, the first method has a problem that the crimp terminal holder is easily detached in a state where only the crimp terminal holder is attached to the circuit breaker. In the second method, when the crimp terminal is inserted into the quick connection terminal of the circuit breaker together with the crimp terminal holder, the crimp terminal may fall off from the crimp terminal holder. Further, since the crimp terminal holder is made of synthetic resin, the surface is slippery, and there is a problem that it is difficult to pick up the crimp terminal particularly when the crimp terminal is removed from the circuit breaker.

The present invention has been made in view of the above problems, to provide a mounting structure of the circuit breaker of the crimp terminal Hol da that can make a connection work of the circuit breaker of the crimp terminal more easily It is what.

In order to achieve the above object, the present invention provides a crimp terminal for attaching a crimp terminal holder for holding the crimp terminal to the circuit breaker when connecting the crimp terminal attached to the tip of an electric wire to the circuit breaker. An attachment structure of the holder, wherein the crimp terminal holder is provided in the insertion hole for holding the crimp terminal in an inserted state, and the crimp terminal is inserted when the crimp terminal is inserted . together comprising an engaging protrusion for engaging the surface of the pressure side of the crimping portion, the crimp terminal holder, the insertion portion to be inserted into the circuit breaker terminal hole provided on the outer peripheral surface of the insertion portion While the locking projection is provided, a locking recess that can lock the locking projection when the insertion portion is inserted is provided in the terminal hole.

According to the present invention, the locking projection is provided on the outer peripheral surface of the insertion portion of the crimp terminal holder, and the locking recess capable of locking the locking projection is provided in the terminal hole of the circuit breaker. When the insertion portion of the terminal holder is inserted into the terminal hole of the circuit breaker, the locking projection is locked in the locking recess , so that the crimp terminal holder can be supported while being attached to the circuit breaker. Therefore, when the crimp terminal is connected, it is possible to prevent the crimp terminal holder from falling off the circuit breaker, and the connection work can be performed more easily.
In addition, the crimp terminal holder is provided with an insertion hole for holding the crimp terminal in an inserted state, and when the crimp terminal is inserted into the insertion hole, the crimp terminal is engaged with the pressure contact side surface of the crimp terminal. Engaging protrusions are provided so that the crimp terminal holder and the crimp terminal can be integrated when holding the crimp terminal. Therefore, when performing the connecting operation of inserting both the crimp terminal holder and the crimp terminal into the terminal hole, it is possible to prevent the crimp terminal holder from dropping from the crimp terminal, and to improve workability.

It is explanatory drawing which showed the external appearance of the crimp terminal holder used as 1st Example. It is explanatory drawing which showed a mode that a crimp terminal was connected to a circuit breaker via a crimp terminal holder. It is explanatory drawing which showed a mode that a crimp terminal was connected to a circuit breaker via a crimp terminal holder. It is explanatory drawing which showed a mode that a crimp terminal was connected to a circuit breaker via a crimp terminal holder. It is explanatory drawing which showed the cross section of the state which attached only the crimp terminal holder to the circuit breaker. It is explanatory drawing of the crimp terminal holder used as 2nd Example, Comprising: (a) is the perspective explanatory drawing which showed the external appearance, (b) is explanatory drawing which showed the inside. It is explanatory drawing which connected the crimp terminal to the circuit breaker via the crimp terminal holder. It is explanatory drawing which showed the cross section in the state of FIG. It is explanatory drawing which showed the example of a change of a crimp terminal holder. It is explanatory drawing which showed the end surface of the circuit breaker which can insert the crimp terminal holder shown in FIG.

  Hereinafter, a crimp terminal holder according to an embodiment of the present invention and a structure for attaching the crimp terminal holder to a circuit breaker will be described in detail with reference to the drawings.

[Example 1]
First, the crimp terminal holder 1 and the circuit breaker 2 which are 1st Example of this invention are demonstrated. FIG. 1 is an explanatory view showing the appearance of a crimp terminal holder 1 according to the first embodiment. 2-4 is explanatory drawing which showed a mode that the electric wire 4 to which the crimp terminal 3 was attached was connected to the circuit breaker 2 via the crimp terminal holder 1, FIG. It is explanatory drawing which showed the cross section of the state attached to the circuit breaker.

  The crimp terminal holder 1 is a block body made of synthetic resin, and includes a main body 11 formed in a substantially rectangular parallelepiped shape, and a substantially cylindrical insertion portion 12 projecting from one end face in the longitudinal direction of the main body 11. Is integrated. In the main body 11, a D-shaped insertion hole 13 having substantially the same shape as the caulking portion 3 a viewed from the axial direction of the electric wire 4 is opened on the other end face in the longitudinal direction. The crimped portion 3a of the crimp terminal 3 can be held in the stored state. Further, the upper and lower surfaces of the main body 11 are provided with anti-slip portions provided with a plurality of ribs 14, 14... When the operator attaches / detaches the crimp terminal holder 1 to / from the circuit breaker 2. Easy to grip. On the other hand, the insertion portion 12 has substantially the same diameter as the terminal hole 5 provided in the circuit breaker 2 and can be inserted into the terminal hole 5. Further, the inner space of the insertion portion 12 has substantially the same diameter as the rod-like connection portion 3 b of the crimp terminal 3 and communicates with the insertion hole 13, and the crimp terminal 3 is inserted into the main body 11 from the insertion hole 13 side. When the crimping portion 3 a is held in the main body 11, the distal end portion of the rod-like connection portion 3 b of the crimp terminal 3 passes through the internal space of the insertion portion 12 through the insertion hole 13 and protrudes from the distal end of the insertion portion 12. It has become. Further, a locking projection 15 is provided radially outward on the outer peripheral surface of the insertion portion 12, and when the insertion portion 12 is inserted into the terminal hole 5, a locking recess provided in the terminal hole 5. 6 (shown in FIG. 5) can be locked.

  The circuit breaker 2 has substantially the same configuration as a conventionally known circuit breaker except for the internal structure of the terminal hole 5. That is, in the internal space of the circuit breaker case 2a, an electric circuit that electrically connects a power supply side terminal (not shown) and the load side terminals 7 and 7 is formed, and the handle 8 provided outside the circuit breaker case 2a. The electric circuit can be opened and closed by rotating in the front-rear direction. Moreover, the load side terminal 7 is comprised as what is called a quick connection terminal which can be connected only by inserting the crimp terminal 3 of the electric wire 4 in the terminal hole 5, and it is formed in the internal space of the circuit breaker case 2a with which the terminal hole 5 communicates. The quick connection terminal fitting 9 is installed. And in each load side terminal 7, when the insertion part 12 of the crimp terminal holder 1 is inserted in the inner peripheral surface of the terminal hole 5, the latching recessed part 6 which can latch the latching protrusion 15 is provided. Yes. In addition, the load side terminals 7 and 7 are arranged in parallel in the left-right direction in the rear surface of the circuit breaker case 2a.

  Furthermore, the electric wire 4 is a general cable member having a conductive wire inside an insulating cover member, and a crimp terminal 3 is attached to the tip thereof. The crimp terminal 3 is a metallic member that is integrally provided with a caulking portion 3a that caulks the leading end of the conductive wire that is exposed when the cover member is removed, and a rod-like connection portion 3b that protrudes forward from the caulking portion 3a. The caulking portion 3a has a concave flat shape on the pressure contact side and an arc shape on the non-pressure contact side in a state where the lead wire is caulked, and is substantially D-shaped when viewed from the axial direction of the electric wire 4.

A method for connecting the crimp terminal holder 1, the circuit breaker 2, and the crimp terminal 3 (electric wire 4) having the above-described configuration will be described.
First, the insertion portion 12 of the crimp terminal holder 1 is inserted into the terminal hole 5 of the circuit breaker 2, and the locking protrusion 15 of the insertion portion 12 is locked to the locking recess 6 of the terminal hole 5. Is attached to the circuit breaker 2 (FIG. 3). Then, the crimp terminal holder 1 is supported by the circuit breaker 2 in such a posture that the crimp terminal 3 can be inserted in a desired direction.
Thereafter, the crimp terminal 3 is inserted into the insertion hole 13 of the crimp terminal holder 1 in a supported state from the rod-like connecting portion 3b side, and the rod-like connecting portion 3b protrudes from the tip of the inserting portion 12 for the quick connection terminal inside the circuit breaker case 2a. If the crimp terminal 3 and the electric wire 4 are pushed in until they are connected to the metal fitting 9, the connection operation is completed (FIG. 4).
On the other hand, when it is desired to remove the crimp terminal holder 1 from the circuit breaker 2, the gripping portion formed by projecting the plurality of ribs 14, 14. What is necessary is just to extract together with the crimp terminal 3 by applying a load in the extraction direction until the lock is released.

According to the crimp terminal holder 1 and the circuit breaker 2 according to the first embodiment as described above, the latch protrusion 15 is formed in the insertion portion 12 of the crimp terminal holder 1 and the latch recess is formed in the terminal hole 5 of the circuit breaker 2. 6, and when the insertion portion 12 of the crimp terminal holder 1 is inserted into the terminal hole 5 of the circuit breaker 2, the latch protrusion 15 is latched in the latch recess 6, whereby the crimp terminal holder 1. Can be supported in a state of being attached to the circuit breaker 2. Therefore, when the crimp terminal 3 is connected, it is possible to prevent the crimp terminal holder 1 from falling out of the circuit breaker 2, and the connection work can be performed more easily.
Further, since the crimp terminal holder 1 is provided with a non-slip portion formed by projecting a plurality of ribs 14, 14..., Especially when the crimp terminal holder 1 is removed from the circuit breaker 2, The crimp terminal holder 1 can be reliably gripped, and the workability during connection work can be further improved.

[Example 2]
Next, the crimp terminal holder 21 and the circuit breaker 2 which are 2nd Example of this invention are demonstrated. 6A and 6B are explanatory views of the crimp terminal holder 21 according to the second embodiment, in which FIG. 6A is a perspective explanatory view showing an appearance, and FIG. 6B is an explanatory view showing the inside. FIG. 7 is an explanatory diagram in which the crimp terminal 3 is connected to the circuit breaker 2 via the crimp terminal holder 21, and FIG. 8 is an explanatory diagram showing a cross section in the state of FIG. 7. In addition, the same code | symbol is attached | subjected about the same component as 1st Example.

  The crimp terminal holder 21 is a synthetic resin block body similar to the crimp terminal holder 1, and is configured in the same manner as the crimp terminal holder 1 except for the main body 22 (for example, the insertion portion 12). The main body 22 is formed in a substantially rectangular parallelepiped shape, and an insertion portion 12 projects from an end surface on one side in the longitudinal direction, and a D-shaped insertion hole 13 is opened on the other end surface. The crimping part 3a of the crimp terminal 3 can be accommodated inside. A tongue piece 23 is provided on the side surface of the main body 22 on the side where the shape of the insertion hole 13 is not an arc shape but a linear shape (the side corresponding to the pressure contact side surface of the crimping portion 3a). . The tongue piece 23 is provided by forming a U-shaped groove penetrating into the insertion hole 13 on the side surface of the main body 22. The tongue piece 23 is pressed against the inner surface of the tongue piece 23 by the crimping portion 3 a of the crimp terminal 3. An engaging protrusion 24 is provided so as to engage with the side surface (that is, the concave flat portion).

When the crimp terminal 3 is connected to the circuit breaker 2 using the crimp terminal holder 21, first, the crimp terminal 3 is inserted into the insertion hole 13 of the crimp terminal holder 21, and the rod-like connection portion 3 b is inserted into the insertion portion 12. Let it protrude from the tip. Then, the engagement protrusion 24 engages with the crimping portion 3a of the crimp terminal 3, and the crimp terminal holder 21 and the crimp terminal 3 are integrated.
After that, if the rod-like connecting portion 3b and the insertion portion 12 are inserted into the terminal hole 5 of the circuit breaker 2 and the locking projection 15 is locked to the locking recess 6 in the terminal hole 5, the crimp terminal 3 is desired. It can be connected to the circuit breaker 2 in the direction.
As with the crimp terminal holder 1 of the first embodiment, the crimp terminal holder 21 is first supported on the circuit breaker 2, and then the crimp terminal 3 can be inserted and connected. Further, when the crimp terminal holder 21 is removed from the circuit breaker 2, like the crimp terminal holder 1, the anti-slip portion formed by projecting a plurality of ribs 14, 14. What is necessary is just to extract with the crimp terminal 3 under a load in the extraction direction until the latching with the stop recess 6 is released.

According to the crimp terminal holder 21 and the circuit breaker 2 according to the second embodiment as described above, like the crimp terminal holder 1 according to the first embodiment, the locking protrusion 15 is formed on the insertion portion 12 of the crimp terminal holder 21. A locking recess 6 is provided in each of the terminal holes 5 of the circuit breaker 2, and the insertion portion 12 of the crimp terminal holder 21 is inserted into the terminal hole 5 of the circuit breaker 2 together with the crimp terminal 3, and the locking protrusion 15 is locked. By engaging the recess 6, the crimp terminal 3 can be connected to the circuit breaker 2 in a desired direction, and the connection work can be easily performed.
Further, the crimp terminal holder 21 is provided with a tongue piece 23 with an engaging projection 24 protruding therefrom, and the crimp terminal 3 is inserted into the insertion hole 13 to engage the engagement protrusion 24 with the crimping portion 3 a of the crimp terminal 3. By doing so, the crimp terminal holder 21 and the crimp terminal 3 can be integrated. Therefore, when performing the connecting operation of inserting both the crimp terminal holder 21 and the crimp terminal 3 into the terminal hole 5, it is possible to prevent the crimp terminal holder 21 from dropping from the crimp terminal 3, thereby improving workability. Can be planned.
Furthermore, since the crimp terminal holder 21 is provided with a non-slip portion formed by projecting a plurality of ribs 14, 14..., The operator can securely grip the crimp terminal holder 21 during connection work. Further improvement in workability can be achieved.

  In addition, the crimp terminal holder and the circuit breaker according to the present invention are not limited to the aspect of the above embodiment, and the configuration of the crimp terminal holder, the configuration related to the support of the crimp terminal holder in the circuit breaker, etc. The present invention can be changed as appropriate without departing from the spirit of the present invention.

For example, in the crimp terminal holder 1 of the first embodiment, the insertion protrusion 12 is provided with the locking protrusion 15, but instead of the locking protrusion 15, a locking rib 32 extending in the insertion direction as shown in FIG. It is also possible to employ the provided crimp terminal holder 31. In adopting the crimp terminal holder 31, as shown in FIG. 10, the terminal hole 33 provided in the circuit breaker 30 is not provided with a locking recess, but a locking groove 34 extending in the drilling direction of the terminal hole 33. It is necessary to provide it.
And also with the crimping terminal holder 31 and the circuit breaker 30, when the insertion part 12 of the crimping terminal holder 31 is inserted into the terminal hole 33 of the circuit breaker 30, like the crimping terminal holder 1 of the first embodiment, Since 32 is locked in the locking groove 34, the crimp terminal holder 31 can be supported in a state of being attached to the circuit breaker 30, and the workability of the connection work can be improved.

Further, in the crimp terminal holder 21 of the second embodiment, the locking projection 15 is provided on the insertion portion 12, but the crimp terminal holder 21 and the crimp terminal 3 are integrated before being inserted into the circuit breaker 2. If the connection work is performed, the locking protrusion 15 is not necessarily provided. By not providing the locking projection 15, the mounting position to the circuit breaker 2 is not automatically determined, but the crimp terminal holder 21 can be prevented from falling off from the crimp terminal 3, so that The effect of improving the sex can be exhibited.
Furthermore, the installation position of the ribs 14 constituting the anti-slip part, the shape of the insertion hole 13 and the like can be changed as appropriate, and even if the ribs 14, 14,. The shape of the insertion hole 13 is not limited to the D shape as long as it matches the shape of the crimp terminal 3.
In addition, in the above-described embodiments and modifications, the crimp terminal holder is provided with a protrusion and the terminal hole is provided with a recess. However, the crimp terminal holder is provided with a recess (locking portion) and the terminal hole is provided with a protrusion (locked portion). ) Are naturally possible.

  1, 2, 31, ... Crimp terminal holders, 2, 30, ... Circuit breakers, 3 ... Crimp terminals, 3a ... Crimp parts, 3b ... Rod connection parts ... 4, Electric wires, 5, 33 ... Terminals Hole 6 .. Locking recess (locked part) 11, 22 .. Main body 12 .. Insertion part 13 .. Insertion hole 14 .. Rib 15 .. Locking protrusion (locking part) , 23 .. Tongue piece, 24 .. Engaging protrusion (engaging part), 32 .. Locking rib (locking part), 34 .. Locking groove (locked part).

Claims (1)

A crimp terminal holder mounting structure for attaching a crimp terminal holder for holding the crimp terminal to the circuit breaker when connecting a crimp terminal attached to the tip of an electric wire to the circuit breaker,
The crimp terminal holder is provided in an insertion hole for holding the crimp terminal in an inserted state, and in the insertion hole, and when the crimp terminal is inserted, the crimp terminal has a crimping portion on the pressure contact side surface . And having an engaging protrusion to be engaged,
The crimp terminal holder is provided with an insertion portion to be inserted into the terminal hole of the circuit breaker, and a locking projection is provided on the outer peripheral surface of the insertion portion,
An attachment structure of a crimp terminal holder, wherein a locking concave portion capable of locking the locking projection when the insertion portion is inserted into the terminal hole is provided.

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