JP2986386B2 - Connector compression die and compression tool using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector compression die and a compression tool using the same, and more particularly, to a connector having a cylindrical connector used for a distribution line. The present invention relates to a technique for crimping a connector and an electric wire.

[0002]

2. Description of the Related Art Various types of connectors have been proposed for connectors used in distribution lines. In general, these connectors are caulked to the wires by being compressed by a compression tool with the wires to be connected arranged inside, so that semi-permanent connections between the wires can be maintained. I have.

[0003] As an example of this kind of connector,
There is one shown in FIG. The connector 1 is formed in a substantially cylindrical shape, and is connected to openings 1a and 1a on both sides.
After the electric wire 2 is inserted from b, the electric wire 2 is crimped to the electric wire 2 by being compressed at a plurality of locations along the longitudinal direction.

[0004] Reference numeral 3 in the figure denotes a central butting plate for striking the electric wire 2 inserted into the connector 1. Further, the number of compression points is appropriately set according to the output of the compression tool, the size of the electric wire, and the like.

A compression tool 4 for compressing such a connector
Has, for example, a substantially U-shaped arm portion 5 that opens in one direction, as shown in FIG. At one end of the arm 5, a cylinder 6 that can advance and retreat the rod 6 a toward the inside of the arm 5 is fixed. A pair of dies 7, 8 facing each other are detachably attached to the inside of the tip of the arm 5 and the tip of the rod 6a of the cylinder 6.

[0006] These dies 7,8 are both are formed in the same shape, the compression section 7a formed in a substantially U-shape which is opposed to the common axis A, and 8a, the compressed portions 7
The support portions 7b, 8b formed integrally with the compression portions 7a, 8a so as to surround the outside of the a, 8a , and the mounting portions 7c, 8c for mounting to the arm portion 5 and the rod 6a of the cylinder 6. Have.

When the compression portions 7a and 8a are brought close to a position where the two dies 7 and 8 come into contact or a position where the compression pressures are balanced, the compression surfaces 7d and 8d forming a hexagonal hole therebetween. 8d. The support portions 7b and 8b are formed in a substantially rectangular parallelepiped block shape. Further, the mounting portions 7c and 8c are formed, for example, in a cylindrical shape having peripheral grooves 7e and 8e formed so as to be gripped by a ball chuck mechanism or the like provided in the rod 6a of the arm portion 5 and the cylinder 6. Is formed.

The arm 5 is provided with the cylinder 6
The outer surface 7f of the supporting portion 7b of the one side die 7 which is arranged in parallel with the axis A of the rod 6a and which is attached inside the tip of the arm portion 5 is arranged in contact with the rod 6a of the cylinder 6. It has a contact surface 9 for sliding the outer surface 8f of the support portion 8b of the other die 8 attached to the tip.

In order to crimp the electric wire 2 and the connector 1 by the compression tool 4 configured as described above, the shapes of the compression surfaces 7d and 8d corresponding to the diameter of the electric wire 2 and the diameter of the connector 1 conforming to the electric wire 2 are required. A pair of dies 7 and 8 having the same are selected and attached to the inside of the tip of the arm 5 and the tip of the rod 6a. At this time, the outer surfaces 7f, 8 of the dies 7, 8
Since f is brought into contact with the contact surface 9 of the arm 5, rotation of the dies 7 and 8 around the common axis A is suppressed.

Then, the connector 1 into which the electric wire 2 is inserted is inserted between the dies 7, 8 in a state in which the rod 6a of the cylinder 6 is retracted to widen the interval between the compressed portions 7a, 8a of the dies 7, 8. Thereafter, the connector 1 is compressed by the compression surfaces 7d, 8d of the dies 7, 8 by operating the cylinder 6 to bring the dies 7, 8 close to each other until the support portions 7b, 8b of the dies 7, 8 come into contact with each other. To be crimped to the electric wire 2.

[0011]

By the way, in the above-mentioned compression tool 7, in order to compress the wires 2 or the connectors 1 having various diameters, as described above, the diameters of the wires 2 and the like are reduced. The dies 7 and 8 can be selected in accordance with the time. That is, when the electric wire 2 and the like are thin, the dies 7 and 8 that form a hexagonal hole having a small compression surface 7d and 8d are selected, and when the electric wire 2 and the like are large, the dies 7 and 8 that form a large hexagonal hole are selected. Selected.

In these cases, when the dies 7, 8 forming a large hexagonal hole are selected, the compression surface 7
One end of each of d and 8d is arranged at a position relatively close to the contact surface 9 of the arm 5. That is, as shown in FIG.
The dimension B from the contact surface 9 to the compression surfaces 7d and 8d is extremely small. Therefore, the connector 1 inserted between the dies 7 and 8 from the opening side of the arm portion 5 can be inserted into the dies 7 and 8 even when the connector 1 is inserted to a position where it comes into contact with the contact surface 9.
As they are brought closer to each other, as shown by a chain line in FIG. 6, the dies 7, 8 are pulled up in the direction of the common axis A of the dies 7, 8 by the compression surfaces 7d, 8d. Thereby, appropriate compression of the connector 1 is performed.

However, the small diameter connector 1
In the case of compressing, as shown in FIG. 7, the support portion 7 which is brought into contact with the contact surface 9 of the arm portion 5 to prevent rotation.
The dimension B from the outer surfaces of b, 8b to the compressed surfaces 7d, 8d is large. Therefore, when the compression operation is performed in a state where the connector 1 inserted between the dies 7 and 8 is inserted to a position where the connector 1 comes into contact with the contact surface 9, as shown by a chain line in FIG. There is a case in which an appropriate compression work cannot be performed because the support parts 7b and 8b are sandwiched between the support parts 7 and 8b.

In particular, when the connection work of the distribution line 2 is carried out in a state where electricity is supplied (hot wire state), an indirect method, that is, the above-mentioned compression tool 4 is connected to a long insulating rod (not shown). Compression work must be performed with the head mounted on For this reason, it has been extremely difficult to perform a compression operation while positioning the connector 1 at an appropriate position with respect to the dies 7 and 8 using the compression tool 4.

In the compression operation under the above conditions, the compression tool 4 attached to the tip of the insulating rod is controlled at the base end side of the insulating rod, and the connector 1 is inserted between the dies 7 and 8. This itself was a very difficult task and required a great deal of labor. The present invention
In view of the above-described circumstances, a connector compression die and a compression tool using the same, which can perform a connection operation of a distribution line for crimping the connector 1 to the electric wire 2 properly and with a small amount of labor. It is intended to provide.

[0016]

In order to achieve the above object, an object of the present invention is to provide a method in which a wire and a connector are brought close to each other from the outside in a radial direction opposite to each other with the connector into which the wire is inserted. A pair of dies which are simultaneously compressed and connected in a fixed state, each of the dies having a substantially U-shaped compression portion opposed to each other on a common axis, and a support portion surrounding the outside and reinforcing and supporting the compression portion. A die, which extends from a support portion of the dice toward an opposing dice and is brought into contact with a connector inserted between the dice, so that an axis of the connector is close to a common axis of the compression portion. A connector compression die provided with a positioning portion has been proposed.

According to a second aspect of the present invention, in the connector compression die, the positioning portion is formed in a straight rod shape, and when the two dies are separated from each other by a distance equal to or longer than an interval at which the connector can be inserted, the supporting portion of the opposite die is formed. There has been proposed a connector compression die in which the length dimension is set so as not to form a gap in which the connector falls off.

According to a third aspect of the present invention, there is provided a connector compression die according to the first aspect of the present invention, wherein the positioning portion has an inclined surface gradually moving away from the common axis of the compression portion toward the tip.

According to a fourth aspect of the present invention, there is provided the first to third aspects.
In the connector compression die described in the above, in a state where a pair of dies are arranged opposite to each other on a common axis, the support portion on the other side sandwiching the compression portion with respect to the support portion on one side provided with a positioning portion for each die. Has proposed a connector compression die provided with a guide surface that is gradually separated from the common axis.

The invention according to claim 5 is the invention according to claims 1 to 4.
A compression tool using any one of the connector compression dies described above, wherein a substantially U-shaped arm portion that arranges the dies in an opposed state inside, and fixed to the arm portion, one of the dies is attached to the other die. A cylinder that is displaced in a direction of coming and going with respect to each other, wherein each die is detachably attached to the arm portion and the cylinder, and the arm portion contacts the outer surface of the support portion of each die to rotate the die. Has proposed a compression tool provided with a contact surface for suppressing the pressure.

[0021]

According to the connector compression die according to the first aspect of the present invention, the connector inserted between the dies abuts the positioning portion so that the axis of the connector approaches the common axis of the compression portion of the die. Since the connectors are arranged, it is possible to avoid a problem that the connector is pinched between the support portions during the compression work.

According to the connector compression die according to the second aspect of the present invention, when the connector is inserted between the dies, the connector is mounted on the rod-shaped positioning portion extending from the support portion of one die toward the other die. Abut The positioning part is
The connector extends from one end of the compression surface of at least one die, and the distance between the tip and the support portion of the other die is set to such a size that the connector cannot fall off. And at the same time, the axis is arranged at a position close to the common axis of the compression portion of the die, and an appropriate compression operation is performed.

According to the third aspect of the present invention, when the connector is inserted between the dies, the connector may be once disposed between the support portions of the dies. Also in this case, when the compression work is started and the dies are brought close to each other, the slope of the protrusion provided on at least one of the dies is adjusted so that the axis of the connector approaches the common axis of the compression portion of the die. Is gradually moved. As a result, when the connector is compressed, the connector and the die are surely aligned and proper compression work is performed.

According to the fourth aspect of the present invention, the connector to be inserted between the dies is guided between the dies by the guide surface opened wider than the interval between the dies. Therefore, the workability of inserting the connector between the dies is improved.

According to a fifth aspect of the present invention, there is provided a compression tool, wherein the dies according to the first to fourth aspects are disposed inside the substantially U-shaped arm portion to face each other, and a connector is provided between the dies. The compression work is performed by bringing one die close to the other die by the cylinder with the. In this case, the compression work for connectors of various diameters can be easily performed by exchanging dies.

In this case, the support portion of the die is brought into contact with the contact surface of the arm portion, whereby rotation is suppressed, and the direction of the compression surface is appropriately maintained during the compression work of the connector. In these cases, since the dice are those according to the first to fourth aspects, in any case, it is possible to perform an appropriate compression work.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a connector compression die and a compression tool using the same according to the present invention will be described below with reference to FIG. In the connector compression dies 10 and 11 and the compression tool 12 of the present embodiment, the conventional dies 7 and 8 and the compression tool 4 described above are used.
The same reference numerals are given to portions having the same configuration as the above, and the description will be simplified.

Die 1 for compressing a connector according to the present embodiment
0 and 11 are fixed dies 10 as shown in FIG.
And a moving die 11. The fixed die 10 is a die 10 attached to the inside of the distal end of the compression tool 12, and is formed integrally with a substantially U-shaped compression part 10b having a compression surface 10a so as to reinforce the compression part 10b. The block-shaped support portion 10c and the compression tool 12
And a mounting portion 10d for mounting the device. The support portion 10c has compression portions 10b on both sides in the width direction.
A plate 14 having a straight rod-shaped positioning portion 13 protruding from one side is fixed by screws 15.

On the other hand, the moving side die 11 is
A die 11 attached to the tip of the rod 6 a of the cylinder 6, the positioning part 13 of the fixed die 10.
A plate 1 having a step 16 through which the positioning part 13 can be inserted at a position corresponding to the positioning part 13
7. The fixed-side dies 10 and the movable-side dies 11 have plates 14 and 17 attached to the dies 10 and 11, respectively, and compression portions 10b and 1b.
It has introduction projections 18 and 19 protruding toward the support portions 10c and 11c opposite to the positioning portion 13 or the step portion 16 with the 1b therebetween.

The positioning portion 13 is provided with the dies 10,
It is formed in a straight rod shape extending in parallel with the eleven common axis A. For example, as shown in FIG. 1, the length is set so that the tip is overlapped with the movable die 11 even when the dies 10 and 11 are separated from each other to the maximum extent. ing. That is, the dies 10, 11
Regardless of the size of the gap therebetween, the positioning portion 13 is set so as to be bridged between the support portions 10c and 11c of the dies 10 and 11 without forming a gap.

When the stationary die 10 and the movable die 11 are arranged to face each other, the introduction projections 18 and 19 are formed by two curved surfaces 18a that gradually approach the common axis A of the two dies 10 and 11. , 19a (guide surfaces) are arranged at the insertion opening of the connector 1 between the dies 10, 11. Therefore, the dies 10, 1 of the connector 1
1 is inserted between the curved surfaces 18a, 1 of the introduction projections 18, 19.
9a guides smoothly.

The operation of compressing the connector 1 by the compression tool 12 configured as described above will be described below. First, the fixed die 10 is attached to the inside of the distal end of the arm 5, and the movable die 11 is attached to the distal end of the rod 6 a of the cylinder 6. Then, by operating the cylinder 6, the movable die 11 is displaced to a position where the distance between the dies 10, 11 is larger than the diameter of the connector 1 to be inserted. Alternatively, the distance between the dies 10 and 11 may be automatically made larger than the diameter of the connector 1 by using a spring return type cylinder.

In this state, the connector 1 is inserted between the dies 10 and 11 from the opening direction of the U-shaped arm 5. Since the introduction projections 18 and 19 are provided in the opening between the dies 10 and 11, the connector 1 is provided with the introduction projections 18 and 1.
9 are guided by the curved surfaces 18a, 19a,
It will be easily guided between 0 and 11.

Next, the connector 1 guided between the dies 10 and 11 has its side surface brought into contact with the positioning portion 13 of the fixed die 10. The positioning unit 13 includes the compression unit 10
b, it is formed in a straight rod shape so as to be bridged between the support portions 10c and 11c disposed on one end side of the connector 1b.
Are aligned so that the axis of the dies substantially intersects with the common axis A of the dies 10 and 11.

In this state, by operating the cylinder 6, the movable die 11 is brought closer to the fixed die 10, and the gap between the two dies 10, 11 is narrowed, so that the connector 1 is compressed. It is compressed by 11a and crimped to the electric wire 2 inserted therein. That is, proper compression work is performed in a state where the connector 1 and the dies 10 and 11 are aligned.
An optimal crimped state between the connector 1 and the electric wire 2 is achieved.

In this case, since the positioning portion 13 is slid in the step 16 of the movable die 11, the operation of the movable die 11 is not hindered. Further, by providing the positioning portion 13 on the fixed die 10, it is only necessary to provide the step 16 for avoiding interference only on the moving die 11, and the strength of the arm portion 5 is not reduced. In addition, it is also possible to provide the positioning part 13 in the moving side die 11.

In the present embodiment, the introduction projection 1
Die 1 provided with both 8, 19 and positioning portion 13
Although 0 and 11 have been described, these may be provided independently. Further, the length of the positioning portion 13 is set to a length that does not cause a gap between the supporting portions 10c and 11c even when the two dies 10 and 11 are maximally separated from each other. As shown in FIG. 2, the length may be set to allow a gap between the positioning portion 13 and the support portion 11c. In this case, at least when the dimension between the dies 10 and 11 is slightly larger than the dimension of the connector 1 before compression, the distance between the tip of the positioning part 13 and the support part 11c of the die 11 becomes smaller. It is sufficient that the distance is set to be equal to or less than the interval dimension that does not cause the connector to fall off.

Here, the fact that the connector 1 falls into the gap between the tip of the positioning portion 13 and the support portion 11c means that the connector 1
Is a state in which it is trapped between the tip of the positioning portion 13 and the support portion 11c without returning to the direction of the compression portion even during the compression work. For example, if the interval dimension is approximately equal to the radius dimension of the connector 1, the connector 1 will not fall into the gap. Further, even when the connector 1 is set slightly larger than that, the connector 1 may be stably returned from the gap during the compression work, so that the connector 1 may not fall off.

Therefore, when the two dies 10, 11 are maximally separated from each other, the distance between the tip of the positioning portion 13 of the fixed die 10 and the supporting portion 11c of the movable die 11 is determined by the radius dimension of the connector 1. If set below,
It is enough.

The positioning part 13 is fixed to the fixed die 10.
And the positioning part 1
Notches 20 for avoiding interference with the dies 3 may be provided in each of the dice 10 and 11. In this case, as shown in FIG. 3, the positioning portions 1 are arranged at equal intervals in the width direction of the dies 10, 11.
By alternately providing the cutouts 3 and the notches 20, the fixed die 10 and the movable die 11 can be shared (FIG. 3 shows only one die 10).

Further, the introduction projections 18 and 19 are
Although the curved surfaces 18a and 19a gradually approach the compression portions 10b and 11b of 0 and 11, it is needless to say that an inclined surface gradually approaching may be used instead.

Next, a second embodiment of a connector die and a compression tool using the same according to the present invention will be described with reference to FIG. In the present embodiment, instead of the straight rod-shaped positioning portion 13 in the first embodiment, a protrusion 21 having a slope 21a in which the distance from the common axis A of the dies 10, 11 gradually increases toward the tip is provided. I have.
In the present embodiment, the protrusion 21 is provided not only on the fixed die 10 but also on the movable die 11.
11 is provided with a notch 22 for avoiding interference with these protrusions 21.

A plurality of the projections 21 and the notches 22 are provided at equal intervals in the width direction of the dies 10 and 11 (not shown), and the fixed die 10 and the movable die 11 are not shown.
And can be used in common.

The case where the connector 1 is compressed using the compression tool 12 having the dies 10 and 11 configured as described above will be described below. First, the interval between the dies 10 and 11 is widened by the activation of the cylinder 6, and the connector 1 into which the electric wire 2 is inserted is disposed therebetween. In this case, for example, as shown by a solid line in FIG.
It is inserted until it comes close to the contact surface 9 of the arm 5.

When the movable die 11 is displaced toward the fixed die 10 by the activation of the cylinder 6,
The connector 1 comes into contact with the slope 21 a of each of the dies 10 and 11, and is displaced in a direction in which the axis of the connector 1 approaches the common axis A of the dies 10 and 11 by sliding on the slope 21 a. As a result, at the time when the dies 10, 11 start compressing the connector 1, the connector 1 has its central axis set to the common axis A of the dies 10, 11 as shown by a chain line in FIG.
Then, it is raised to a position substantially intersecting with the above, and thereafter, an appropriate compression work is performed.

As described above, according to the connector compression dies 10 and 11 and the compression tool 12 according to the present embodiment, the connector 1 is connected to the dies 10 and 11 as the compression work progresses.
Therefore, it is not necessary for the operator to position the connector 1, so that the efficiency of the compression work can be increased and the crimping state between the connector 1 and the electric wire 2 can be improved. .

Although the fixed die 10 and the movable die 11 are commonly used in the second embodiment, separate ones having different numbers of protrusions 21 may be used. . Further, the number of the protrusions 21 can be arbitrarily set. Further, the slope 21a of the protrusion 21
Is set such that the frictional resistance between the inclined surface 21a and the connector 1 brought into contact with the inclined surface 21a is small enough to allow the connector 1 to slide on the inclined surface 21a with the compression work. It should just be.

[0048]

As described above, according to the connector compression die and the compression tool using the same according to the present invention, connectors having various diameters can be formed by various dies attached to the same compression tool. Also in the case of compression, the connector is centered on the compression part of the die by the action of the positioning part, so that it is possible to obtain an effect that an appropriate compressed state can be obtained. Also, the worker
Since there is no need to perform a delicate positioning operation of the connector on the die during the compression operation, there is an effect that the operation efficiency can be greatly improved.

Further, if the guide surface is provided on the die, the workability of the operator can be greatly improved even when the connector is inserted between the dies. Thereby, labor saving in the compression work of the connector can be achieved by the die and the compression tool having a very simple configuration.

[Brief description of the drawings]

FIG. 1 is a front view showing a connector compression die and a compression tool according to the present invention.

FIG. 2 is a front view showing another example of the connector compression die of FIG. 1;

FIG. 3 is a perspective view showing another example of the connector compression die of FIG. 1;

FIG. 4 is a front view showing a second embodiment of a connector compression die according to the present invention.

FIG. 5 is a partially broken front view showing a state in which the connector for the distribution line is connected to the electric wire.

FIG. 6 is a front view showing a conventional connector compression die and a compression tool.

7 is a front view showing the connector compression die and the compression tool of FIG. 6 for compressing a connector having a smaller diameter than the connector of FIG. 6;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Connector 2 Electric wire 5 Arm part 6 Cylinder 9 Contact surface 10, 11 Dice (Connector dice) 10b, 11b Compression part 10c, 11c Support part 12 Compression tools 13 , 21 Positioning part 18a, 19a Curved surface (guide surface) 21a Slope A common axis

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 4/18-4/20 H01R 43/04-43/058 H02G 1/02 303 H02G 1/14

Claims (5)

(57) [Claims] 1. A pair of dies which are brought close to each other from the outside in a radial direction opposed to each other across a connector into which an electric wire is inserted, and which compresses the electric wire and the connector at the same time to connect them in a fixed state. A die having a substantially U-shaped compression portion facing the common axis, and a support portion surrounding the outside of the compression portion and reinforcingly supporting the compression portion; The support portion extends from the position offset from the compression portion in the direction of the opposing dies , and a connector inserted between the dies is brought into contact with the support portion, and the central axis of the connector is shared by the compression portions. A connector compression die, wherein a positioning portion is provided to approach the axis. 2. A gap in which the positioning portion is formed in a straight rod shape, and when the two dies are separated from each other by a distance equal to or longer than an interval at which the connector can be inserted, the connector falls between the opposite dies and the supporting portion. 2. The connector compression die according to claim 1, wherein the length dimension is set so as not to form the connector. 3. The connector compression die according to claim 1, wherein the positioning portion has an inclined surface gradually moving away from a common axis of the compression portion toward the distal end. 4. In a state where a pair of dies are opposed to each other on a common axis, a common axis is provided on one side of the support on which the positioning portion of each die is provided, with the support on the other side sandwiching the compression portion. as the distance from the gradually claim 3 noise claim 1, guide face away, characterized in that the provided
A connector compression die according to any one of the claims. 5. A compression tool using the connector compression die according to any one of claims 1 to 4, wherein a substantially U-shaped arm portion for arranging the die in an opposed state inside. A cylinder fixed to the arm portion and displacing one of the dies in a direction of coming and going with respect to the other die, wherein the dies are detachably attached to the arm portion and the cylinder, respectively. A compression tool, wherein a contact surface that contacts an outer surface of a support portion of each die and suppresses rotation of the die is provided on the arm portion.