JP2021128858A - Crimping tool for terminal - Google Patents

Abstract

To provide a crimping tool for a terminal in which a positional displacement of a holder with respect to a pinching body occurs hardly.SOLUTION: A crimping tool for a terminal includes a pair of pinching bodies provided with a pressurizing portion which can compress a wire coupling portion of a crimp terminal, and a holder in which the crimp terminal can be placed. The pinching body includes an insertion hole in which a convex portion provided in the holder can be attached and detached. Therefore, the positional displacement of the holder with respect to the pinching bodies can be suppressed by a simple operation of inserting the convex portion of the holder into the insertion hole.SELECTED DRAWING: Figure 1

Description

The present invention relates to a crimping tool for terminals.

A crimp terminal may be fixed to the wiring provided on a switchboard or the like, and a crimping tool for terminals or the like is used to fix the crimp terminal to the end of the wiring (see, for example, Patent Document 1). The crimping tool for terminals includes a pair of holding bodies that rotate around a shaft portion and a holder on which crimping terminals can be placed. In the crimping tool for terminals of Patent Document 1, a permanent magnet is provided in the holder, and the holder is attached to the holding body by attaching the permanent magnet to the side surface of the holding body.

Jikkai Sho 58-165877

However, in Patent Document 1, since the permanent magnet of the holder adheres to the side surface of the holding body, there is a problem that the holder tends to be displaced with respect to the holding body when a load is applied to the holder.

The present invention has been made in view of the above problems, and an object of the present invention is to obtain a crimping tool for terminals in which the holder is less likely to be displaced with respect to the holding body.

One aspect of the crimping tool for terminals according to the present invention is that a pair of holding bodies provided with a pressurizing portion capable of compressing the electric wire coupling portion of the crimping terminal and the crimping terminal can be placed, and the convex portion is formed. The holder is provided, and at least one of the pair of holding bodies is provided with an insertion hole into which the convex portion can be attached and detached. According to this, the position deviation of the holder with respect to the holding body can be suppressed by a simple operation of inserting the convex portion of the holder into the insertion hole. That is, conventionally, since a permanent magnet is provided in the holder and the permanent magnet is attached to the side surface of the holding body to attach the holder to the holding body, the position of the holder with respect to the holding body is likely to be displaced. , Since the convex portion of the holder is inserted into the insertion hole, the misalignment of the holder is suppressed.

In another aspect of the present invention, the crimp terminal comprises the wire coupling portion and a plate-shaped portion provided with a through hole in the central portion, and the holder is the convex portion and the crimp terminal. A main body portion on which a plate-shaped portion can be placed is provided, and the main body portion has a fitting portion that fits on the inner peripheral side of the through hole of the crimp terminal. According to this, since the fitting portion of the holder fits on the inner peripheral side of the through hole of the crimp terminal, it is possible to suppress the positional deviation of the crimp terminal with respect to the holder.

In another aspect of the present invention, the inner peripheral surface of the insertion hole is provided with a protrusion protruding toward the inner peripheral side of the insertion hole, and the convex portion of the holder has a concave groove into which the protrusion can be fitted. Have. According to this, since the concave groove of the convex portion of the holder fits into the protrusion, the rotation of the holder around the convex portion can be suppressed.

In another aspect of the present invention, a plurality of the insertion holes are provided. According to this, a plurality of holders according to the size of the through hole of the crimp terminal and the thickness of the electric wire can be prepared, and the most suitable holder can be inserted into the plurality of insertion holes for use.

In another aspect of the present invention, the plurality of insertion holes have different diameters. According to this, it is possible to prevent a mounting difference in which the holder prepared according to each insertion hole is inserted into another insertion hole.

In another aspect of the present invention, the inner peripheral surfaces of the plurality of insertion holes are provided with protrusions protruding toward the inner peripheral side of the insertion holes, and the protrusions can be fitted to the convex portions of the holder. It has a groove. According to this, the rotation of the holder around the convex portion can be suppressed.

In another aspect of the present invention, the positions of the protrusions provided on the inner peripheral surface of the insertion hole in the circumferential direction are all different for each insertion hole. According to this, it is possible to prevent the mistake of inserting the holder prepared according to each insertion hole into another insertion hole.

According to the present invention, it is possible to obtain a crimping tool for terminals in which the holder is less likely to be displaced with respect to the holding body.

FIG. 1 is a perspective view schematically showing a crimping tool for terminals according to an embodiment. FIG. 2 is a perspective view showing the holder of FIG. FIG. 3 is a schematic view showing a state in which the end of the electric wire is crimped to the crimp terminal. FIG. 4 is a side view of the first holding body and the second holding body of the crimping tool for terminals. FIG. 5 is a perspective view showing a state in which the crimping terminal is placed on the holder of the crimping tool for the terminal. FIG. 6 is a top view showing a state in which the end portion of the electric wire is crimped to the crimp terminal by the crimping tool for the terminal. FIG. 7 is a side view of the first holding body and the second holding body of the crimping tool for terminals according to the modified example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the disclosure is merely an example, and those skilled in the art can easily conceive of appropriate changes while maintaining the gist of the invention are naturally included in the scope of the present invention. Further, in order to clarify the explanation, the drawings may schematically represent the width, thickness, shape, etc. of each part as compared with the actual embodiment, but this is just an example, and the interpretation of the present invention is used. It is not limited.

Further, in the present specification and each figure, the same elements as those described above with respect to the above-mentioned figures may be designated by the same reference numerals, and detailed description thereof may be omitted as appropriate.

[Embodiment]
FIG. 1 is a perspective view schematically showing a crimping tool for terminals according to an embodiment. FIG. 2 is a perspective view showing the holder of FIG. In the drawings, the X direction indicates the thickness direction of the tool body 2. The X1 direction indicates the right direction when the operator grips the terminal crimping tool 1, and the X2 direction indicates the left direction when the operator grips the terminal crimping tool 1. The Y direction indicates the longitudinal direction of the tool body 2. The Y1 direction indicates a direction away from the worker when the worker grips the terminal crimping tool 1, and the Y2 direction indicates a direction closer to the worker when the worker grips the terminal crimping tool 1.

As shown in FIGS. 1 and 2, the terminal crimping tool 1 includes a tool body 2 and a holder 3. The tool body 2 includes a pair of holding bodies. The configuration of the tool body 2 will be described below.

The tool body 2 includes a first holding body 21, a second holding body 22, a connecting plate 23, a first grip cover 24, and a second grip cover 25. The first sandwiching body 21 and the second sandwiching body 22 are also referred to as a pair of sandwiching bodies.

The first sandwiching body 21 and the second sandwiching body 22 each extend in the Y direction, which is the longitudinal direction, and are rotatably supported by each other about a plurality of shaft portions. The first holding body 21 is a first pressurizing body that is pivotally supported by a first grip portion 211 to which the first grip cover 24 is attached and a first shaft portion (shaft portion) 101 with respect to the first grip portion 211. A unit (pressurizing unit) 212 is provided. The second holding body 22 has a second grip portion 221 to which the second grip cover 25 is attached, and a second pressurizing body that is pivotally supported by the second grip portion 221 via a second shaft portion (shaft portion) 102. A unit (pressurizing unit) 222 and the like. The first grip portion 211 and the second grip portion 221 are rotatably supported via a third shaft portion (shaft portion) 103. Further, the first pressurizing section 212 and the second pressurizing section 222 are connected via a connecting plate 23. One end of the connecting plate 23 is pivotally supported by the first pressurizing portion 212 via the fourth shaft portion (shaft portion) 104, and the other end of the connecting plate 23 has a fifth shaft portion (shaft portion) 105. It is pivotally supported by the second pressurizing unit 222 via the bridge.

With the above configuration, when the first grip cover 24 and the second grip cover 25 are gripped and compressed in a direction approaching each other, the first grip portion 211 and the second grip portion 221 rotate around the third shaft portion 103. It moves and the first shaft portion 101 and the second shaft portion 102 move away from each other. Then, the first pressurizing portion 212 and the second pressurizing portion 222 rotate around the fourth shaft portion 104 and the fifth shaft portion 105, and the tip portion of the first pressurizing portion 212 and the second pressurizing portion 212 are subjected to the second pressurization. The tip of the portion 222 approaches. Convex portions 213 and concave portions 214 are alternately provided along the longitudinal direction at the tip of the first pressurizing portion 212, and the convex portions 223 and the concave portions are provided at the tip of the second pressurizing portion 222. The portions 224 are alternately provided along the longitudinal direction. The convex portion 213 of the first pressurizing portion 212 and the concave portion 224 of the second pressurizing portion 222 mesh with each other, and the concave portion 214 of the first pressurizing portion 212 and the convex portion 223 of the second pressurizing portion 222 come into contact with each other. Engage.

As shown in FIG. 1, the holder 3 is provided on the side portion 222a on the X1 side of the second pressurizing portion 222. The holder 3 extends in the X1 direction from the side portion 222a of the second pressurizing portion 222. As shown in FIG. 2, the holder 3 includes a columnar convex portion 31 and a main body portion 32 fixed to an end portion of the convex portion 31. The convex portion 31 extends in the X direction. On the Y1 side of the convex portion 31, a concave groove 33 recessed on the inner peripheral side (Y2 side) is provided. The concave groove 33 extends in the X direction. The outer peripheral surface of the main body 32 has an end surface 321 on the X2 side, an end surface 322 on the Y1 side, an end surface 323 on the Y2 side, and a curved end surface 324 on the X1 side. A crimp terminal 5 is placed on the upper surface 320 of the main body 32. The main body 32 is provided with a fitting portion 325 that projects upward. In the present embodiment, the fitting portion 325 is a cylindrical portion.

FIG. 3 is a schematic view showing a state in which the end of the electric wire is crimped to the crimp terminal. As shown in FIG. 3, the electric wire 4 includes a coated portion 41 coated with a resin and a wire portion 42 exposed without being coated with the resin. Further, the crimp terminal 5 includes a cylindrical electric wire connecting portion 51 and a plate-shaped portion 52 provided at the tip of the electric wire connecting portion 51. The outer peripheral edge of the plate-shaped portion 52 is curved in an arc shape, and a circular through hole 53 is provided in the central portion. Therefore, when the wire connecting portion 42 of the electric wire 4 is inserted into the electric wire connecting portion 51 of the crimp terminal 5 and the electric wire connecting portion 51 is compressed in the radial direction and plastically deformed, the electric wire 4 is fixed to the crimp terminal 5. Can be done. Further, since the inner diameter of the through hole 53 is slightly larger than the outer diameter of the fitting portion 325 of the holder 3, the through hole 53 of the crimp terminal 5 can be fitted into the fitting portion 325 of the holder 3. The crimping operation for fixing the electric wire 4 to the crimping terminal 5 will be described in detail later.

FIG. 4 is a side view of the first holding body and the second holding body of the crimping tool for terminals. Next, a procedure for mounting the holder 3 on the side portion 222a of the second pressurizing portion 222 will be described.

A first insertion hole (insertion hole) 61 is provided in the side portion 222a of the second pressurizing portion 222 so as to penetrate in the X direction. The first insertion hole 61 is located on the Z2 side of the concave portion 224 on the most Y2 side of the concave portions 224 provided in the second pressurizing portion 222. The outer diameter of the convex portion 31 is slightly smaller than the inner diameter of the first insertion hole 61, and the convex portion 31 can be inserted into the first insertion hole 61 with almost no gap.

By inserting the convex portion 31 of the holder 3 shown in FIG. 2 into the first insertion hole 61, the holder 3 is attached to the tool body 2, and the convex portion 31 of the holder 3 is pulled out from the first insertion hole 61. , The holder 3 is removed from the tool body 2. A protrusion 610 projects toward the inner peripheral side (toward the center of the first insertion hole 61) on the inner peripheral surface 61a of the first insertion hole 61. Specifically, the protrusion 610 protrudes in the Y2 direction from the end on the inner peripheral surface 61a on the Y1 side. By fitting the protrusion 610 into the concave groove 33 of the convex portion 31 of the holder 3, the holder 3 is suppressed from rotating about the X axis.

Next, a procedure for crimping the end of the electric wire to the crimp terminal using a crimping tool for terminals will be described. FIG. 5 is a perspective view showing a state in which the crimping terminal is placed on the holder of the crimping tool for the terminal. FIG. 6 is a top view showing a state in which the end portion of the electric wire is crimped to the crimp terminal by the crimping tool for the terminal.

First, as shown in FIG. 5, the electric wire coupling portion 51 of the crimp terminal 5 is placed on the concave portion 224 of the second pressurizing portion 222, and the plate-shaped portion 52 of the crimp terminal 5 is placed on the upper surface of the main body portion 32 of the holder 3. Place it on 320. At this time, the fitting portion 325 of the holder 3 is fitted on the inner peripheral side of the through hole 53 of the plate-shaped portion 52. As a result, the crimp terminal 5 is positioned. Then, as shown in FIG. 6, the wire portion 42 of the electric wire 4 is inserted into the electric wire connecting portion 51 of the crimp terminal 5, and the first grip cover 24 and the second grip cover 25 are gripped and gripped by the fingers 100. Then, the convex portion 213 of the first pressurizing portion 212 shown in FIG. 5 moves to the Z2 side (lower side), the electric wire connecting portion 51 is compressed and plastically deformed, and the wires of the electric wire connecting portion 51 and the electric wire 4 are arranged. The portion 42 is fixed.

As described above, the terminal crimping tool 1 according to the embodiment includes the first shaft portion 101, the second shaft portion 102, the third shaft portion 103, the fourth shaft portion 104, and the fifth shaft portion 105 (shaft portion). A first holding body provided with a first pressurizing portion 212 and a second pressurizing portion 222 (pressurizing portion) which are rotatably supported by each other and can compress the electric wire connecting portion 51 of the crimp terminal 5. The second sandwiching body 22 includes a 21 and a second sandwiching body 22 (a pair of sandwiching bodies) and a holder 3 on which a crimp terminal 5 can be placed and provided with a convex portion 31, and the second sandwiching body 22 has a convex portion 31. Is provided with a detachable first insertion hole 61 (insertion hole). According to this, a simple operation of inserting the convex portion 31 of the holder 3 into the first insertion hole 61 (insertion hole) suppresses the positional deviation of the holder 3 with respect to the second holding body 22 in the Y direction and the Z direction. be able to. The Z direction is a direction orthogonal to the X direction and the Y direction, the Z1 direction is a direction from the second sandwiching body 22 toward the first sandwiching body 21, and the Z2 direction is a direction from the first sandwiching body 21 to the second sandwiching body 21. The direction is toward the body 22. Conventionally, since a permanent magnet is provided in the holder and the permanent magnet is attached to the side surface of the holding body to attach the holder to the holding body, the position of the holder with respect to the holding body is likely to be displaced. Since the convex portion 31 of the holder 3 is inserted into the first insertion hole 61, the misalignment of the holder 3 is suppressed.

The crimp terminal 5 includes an electric wire connecting portion 51 and a plate-shaped portion 52 provided with a through hole 53 in the center, and the holder 3 has a convex portion 31 and a plate-shaped portion 52 of the crimp terminal 5 placed therein. A possible main body portion 32 is provided. The main body 32 has a fitting portion 325 that fits on the inner peripheral side of the through hole 53 of the crimp terminal 5. According to this, since the fitting portion 325 of the holder 3 is fitted on the inner peripheral side of the through hole 53 of the crimp terminal 5, it is possible to suppress the positional deviation of the crimp terminal 5 with respect to the holder 3 in the X direction and the Y direction. ..

The inner peripheral surface 61a of the first insertion hole 61 (insertion hole) is provided with a protrusion 610 protruding toward the inner circumference side of the first insertion hole 61, and the protrusion 610 can be fitted to the convex portion 31 of the holder 3. It has a groove 33. According to this, since the concave groove 33 of the convex portion 31 of the holder 3 fits into the protrusion 610, the rotation of the holder 3 about the convex portion 31 can be suppressed.

[Modification example]
FIG. 7 is a side view of the first holding body and the second holding body of the crimping tool for terminals according to the modified example. In the above-described embodiment, only one first insertion hole (insertion hole) 61 is provided in the side portion 222a of the second pressurizing portion 222, but the terminal crimping tool 1A according to the modified example has four (plurality). ) Is provided. Specifically, in the modified example, the first insertion hole 61, the second insertion hole 62, the third insertion hole 63, and the fourth insertion hole 64 are provided so as to penetrate in the X direction.

The first insertion hole 61 is located on the Z2 side of the concave portion 224 on the most Y2 side of the concave portions 224 provided in the second pressurizing portion 222. On the Y1 side of the inner peripheral surface 61a of the first insertion hole 61 (insertion hole), a protrusion 610 protruding toward the inner peripheral side of the first insertion hole 61 is provided.

The second insertion hole (insertion hole) 62 is located on the Z2 side of the concave portion 224, which is the second from the Y1 side, among the concave portions 224 provided in the second pressurizing portion 222. On the Z2 side of the inner peripheral surface 62a of the second insertion hole 62, a protrusion 620 protruding toward the inner peripheral side of the second insertion hole 62 is provided.

The third insertion hole (insertion hole) 63 is located on the Z1 side of the concave portion 214 on the most Y2 side of the concave portions 214 provided in the first pressurizing portion 212. On the Z1 side of the inner peripheral surface 63a of the third insertion hole 63, a protrusion 630 protruding toward the inner peripheral side of the third insertion hole 63 is provided.

The fourth insertion hole (insertion hole) 64 is located on the Z1 side of the concave portion 214 which is the second from the Y1 side among the concave portions 214 provided in the first pressurizing portion 212. On the Y2 side of the inner peripheral surface 64a of the fourth insertion hole 64, a protrusion 640 protruding toward the inner peripheral side of the fourth insertion hole 64 is provided.

Further, the hole diameters of the first insertion hole 61, the second insertion hole 62, the third insertion hole 63, and the fourth insertion hole 64 are all different. That is, the hole diameters decrease in the order of the first insertion hole 61, the second insertion hole 62, the third insertion hole 63, and the fourth insertion hole 64.

As described above, in the terminal crimping tool 1A according to the modified example, the first insertion hole 61, the second insertion hole 62, the third insertion hole 63, and the fourth insertion hole 64 (insertion hole) are four (insertion holes). Multiple) will be provided. According to this, for example, a plurality of holders 3 according to the size of the through hole 53 of the crimp terminal 5 and the thickness of the electric wire 4 are prepared, and the most suitable holder 3 is inserted into the plurality of insertion holes for use. be able to.

The plurality of insertion holes have different diameters. That is, the hole diameters decrease in the order of the first insertion hole 61, the second insertion hole 62, the third insertion hole 63, and the fourth insertion hole 64. According to this, it is possible to prevent an error of inserting the holder 3 prepared according to each insertion hole into another insertion hole.

The inner peripheral surface 61a of the first insertion hole 61, the inner peripheral surface 62a of the second insertion hole 62, the inner peripheral surface 63a of the third insertion hole 63, and the inner peripheral surface 64a of the fourth insertion hole 64 are inside the insertion holes. A protrusion 610, a protrusion 620, a protrusion 630 and a protrusion 640 projecting to the peripheral side are provided. According to this, the rotation of the holder 3 about the convex portion 31 can be suppressed.

The positions of the protrusions 610, 620, 630, and 640 in the circumferential direction are all different for each insertion hole. The circumferential direction indicates the direction around the center of each insertion hole when the tool body 2 is viewed from the X direction. According to this, it is possible to prevent an error of inserting the holder 3 prepared according to each insertion hole into another insertion hole.

1 Crimping tool for terminals 1 Crimping tool for A terminals 3 Holder 5 Crimping terminal 21 1st holding body (holding body)
22 Second pinching body (pinching body)
31 Convex part 32 Main body part 33 Concave groove 51 Electric wire connecting part 61 First insertion hole (insertion hole)
61a Inner peripheral surface 62 Second insertion hole (insertion hole)
62a Inner peripheral surface 63 Third insertion hole (insertion hole)
63a Inner peripheral surface 64 4th insertion hole (insertion hole)
64a Inner peripheral surface 101 1st shaft part (shaft part)
102 2nd shaft part (shaft part)
103 Third shaft part (shaft part)
104 4th shaft part (shaft part)
105 5th shaft part (shaft part)
212 First pressurizing section (pressurizing section)
222 Second pressurizing section (pressurizing section)
325 Fitting part 610 Protrusion 620 Protrusion 630 Protrusion 640 Protrusion

Claims (7)

A pair of sandwiches provided with a pressurizing part that can compress the wire joint part of the crimp terminal,
A holder capable of mounting the crimp terminal and provided with a convex portion is provided.
At least one of the pair of holding bodies is provided with an insertion hole into which the convex portion can be attached and detached.
Crimping tool for terminals. The crimp terminal includes the electric wire connecting portion and a plate-shaped portion provided with a through hole in the central portion.
The holder includes a convex portion and a main body portion on which the plate-shaped portion of the crimp terminal can be placed, and the main body portion is fitted to the inner peripheral side of the through hole of the crimp terminal. Have a part,
The crimping tool for terminals according to claim 1. The inner peripheral surface of the insertion hole is provided with a protrusion protruding toward the inner peripheral side of the insertion hole.
The convex portion of the holder has a concave groove into which the protrusion can be fitted.
The crimping tool for terminals according to claim 1 or 2. A plurality of the insertion holes are provided.
The crimping tool for terminals according to any one of claims 1 to 3. The plurality of insertion holes have different diameters.
The crimping tool for terminals according to claim 4. On the inner peripheral surfaces of the plurality of insertion holes, protrusions protruding toward the inner peripheral side of the insertion holes are provided.
The convex portion of the holder has a concave groove into which the protrusion can be fitted.
The crimping tool for terminals according to claim 4 or 5. The positions of the protrusions provided on the inner peripheral surface of the insertion hole in the circumferential direction are all different for each insertion hole.
The crimping tool for terminals according to claim 6.

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