JPH04324260A - Electric wire connecting compression sleeve - Google Patents

Abstract

PURPOSE:To provide simplification of connecting work while an electric wire is prevented from flawing and further total unit holding force to the electric wire or the like can be reinforced by forming a shape of a sleeve main unit to unlimitely approximate to a sectional shape of a pipe, so as to envelop the respective held electric wires, and dispersing compression force of the sleeve main unit to both side plates to reduce the compression force of each side plate. CONSTITUTION:One side of a plate-shaped sleeve main unit 1 is bent and folded back to provide the first electric wire holding part 3 having an electric wire holding tubular hollow part 2. The other side of the sleeve main unit 1 is curved by placing an end part 4 of the above-mentioned folding back inside to provide the second electric wire holding part 7 having an electric wire holding groove 6 surrounded by the above-mentioned first electric wire holding part 3 and the other side of the sleeve main unit 1, and a curved part 5 in the other side of the above-mentioned sleeve main unit 1 is overlapped with the periphery of the first electric wire holding part 3 to form a shape possible to perform coating.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a compression sleeve for connecting electric wires.

0002

[Prior Art] Conventionally, electric wire connectors for connecting main lines and branch lines use bolt connectors or C-type compression sleeves.
A main line and a branch line are held together and tightened with bolts or compression. Among these, the compression sleeve for connecting electric wires with a C-shaped cross section is shown in Figure 14.
As shown in the figure, insert the main line (C) and the branch line (D) through the opening (B) on one side of the sleeve (A), which has a C-shaped cross section, and in this state compress the outer periphery of the sleeve (A) with a compressor. , Figure 15
As shown in the figure, the main line (c) and the branch line (d) are held together in a so-called cantilever type for connection.

0003

[Problems to be Solved by the Invention] However, since this compression sleeve (a) has an opening (b) on one side,
A compressive load is applied only to one side plate on the other side, and therefore this compressive force is large. Therefore, a large compressive force is applied to these electric wires, which may cause damage to the electric wires.

[0004] Therefore, in the present invention, in such a compression sleeve, the shape of the sleeve body is made as close to the cross-sectional shape of the pipe as possible, rather than having a C-shaped cross section, so as to enclose each electric wire to be gripped, and the sleeve body is compressed. A compression sleeve for connecting electric wires that distributes the force to both side plates to reduce the compressive force on each side plate, prevents damage to the wires, strengthens the overall grip on the wires, etc., and simplifies the connection work. The purpose is to provide the following.

[0005]

[Means for Solving the Problems] According to the present invention, one side of a plate-shaped sleeve body is bent and folded back to provide a first wire gripping portion having a cylindrical hollow portion for gripping the wire. Then, curve the other side of the sleeve body with the folded end inside,
A second wire gripping portion having a wire gripping groove surrounded by the first wire gripping portion and the other side of the sleeve body is provided, and the curved portion on the other side of the sleeve body is overlapped and covered with the outer periphery of the first wire gripping portion. It has a flexible shape.

[0006]

[Function] The wire connecting compression sleeve can temporarily hold the branch wire by inserting the end of the branch wire into the wire gripping cylindrical hollow portion of the first wire gripping portion. Therefore, while holding the branch wire, bring it close to the main wire and fit the main wire into the wire gripping groove of the second wire gripping part. Then, bend the curved part on the other side of the sleeve body with a tool such as pliers, and
Make sure that the end rests on the outer periphery of the wire grip. In this state, it is put into a compression die and compressed. As a result, each wire gripping portion is compressed and brought close to each other, the opening of the wire gripping groove of the second wire gripping portion is closed, and the curved portion on the other side of the sleeve body is moved closer to the first wire gripping portion.
The end of the curved portion on the other side of the sleeve body is placed in close contact along the outer periphery of the wire gripping portion, and is located on one side of the buckling protrusions on both sides of the sleeve due to compression.

[0007] It goes without saying that the first and second electric wire gripping parts may each grip either a branch line or a main line.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings.

FIGS. 1 to 7 show a first embodiment of the present invention. In this first embodiment, one side of a plate-shaped sleeve main body 1 is folded back, and a first wire gripping portion 3 having a cylindrical hollow portion 2 for gripping the wire is provided in the folded portion. Then, the folded end portion 4 is placed inside the sleeve body 1, and the other side of the sleeve body 1 is curved to form a curved portion 5, and a wire gripping groove 6 surrounded by the first wire gripping portion 3 and the sleeve body 1 is formed. A second wire gripping portion 7 is provided. Further, the curved portion 5 at the other end of the sleeve body 1 is connected to the first wire gripping portion 3.
It has a shape that allows it to be polymerized and coated on the outer periphery.

In the case of this first embodiment, as shown in FIG.
Insert the 0 end. As a result, the branch wire 10 is temporarily held by the sleeve, and in this state, the sleeve is brought close to the main line 11 and the main line 11 is fitted into the wire gripping groove 6 of the second wire gripping part 7. Then, the curved portion 5 on the other side of the sleeve main body 1 is further bent using a tool such as pliers so that the end of the curved portion 5 covers the outer periphery of the first wire gripping portion 3. In this state, the sleeve is put into a compression die and compressed.

As a result, as shown in FIG. 6, the first wire gripping portion 3 and the second wire gripping portion 7 are compressed and come close to each other, the opening of the wire gripping groove 6 of the second wire gripping portion 7 is closed, and the sleeve is closed. The curved portion 5 on the other side of the main body 1 is in close contact along the outer periphery of the first wire gripping portion 3, and is placed next to one of the buckling protrusions 12, 12 on both sides of the sleeve main body 1 due to compression. The ends of the curved portion 5 are brought into close contact along this line.

As described above, in the sleeve of the first embodiment, the sleeve main body 1 wraps around the outer periphery of the main line 11 and the branch line 10, and the compressive strength is high. Further, the curved portion 5 is the first wire gripping portion 3
The end of the curved portion 5 is wrapped around the outer periphery of the sleeve body 1 and closely adheres to the side of one buckling protrusion 12 of the sleeve body 1, so that the end of the curved portion 5 does not peel off from the sleeve body 1 and is firmly attached. The opening is closed. Therefore, even if there is an external impact on the sleeve body 1, it will not open.

Further, in the first embodiment, the end of the curved portion 5 is straight, but as shown in FIGS. 2 and 3, an appropriate number of notches 8 or through holes 9 may be provided along the end edge. There is also. In this case, when the main line 11 and the branch line 10 are gripped and the sleeve is compressed, the outer circumferential flesh of the sleeve body 1 digs into these notches 8 and through holes 9, causing these notches 8 and through holes 9 to bite.
The edge having the shape fits the outer periphery of the buckling protrusion 12 and is more firmly attached.

FIG. 7 shows a plan view of the sleeve body 1 of the first embodiment compressed by the die 13 of FIG. Therefore, ribs 15 are formed on the outer periphery of the compressed sleeve body 1. The sleeve compressed by the ribs 15 has higher strength.

FIG. 9 shows a second embodiment of the invention,
The structure of this second embodiment is almost the same as that of the first embodiment, and the curved portion 5 is made shorter than that of the first embodiment.
Similar to the one shown in , an appropriate number of through holes 16 are provided on the inner surface of the edge.

In the case of this embodiment, as shown in FIG. 9, the outer circumference of the first electric wire gripping portion 3 bites into each of the through holes 16 during compression, and the ends of the curved portion 5 are firmly attached. Therefore, the curved portion 5 can be made shorter than that of the first embodiment.

Furthermore, in the case where such a through hole or notch is provided at the end of the bending part 5, the bending part 5 is made longer than that of the first embodiment, and when compressed, the second wire gripping part 7 The end portion may be located on the outer periphery.

10 to 13 show a third embodiment of the present invention. This third embodiment has almost the same structure as the first embodiment, except that the end of the curved portion 5 is bent into a key shape. When the electric wire is gripped and compressed as shown in FIG. 13, the bent end 18 is covered with the outer periphery of one of the buckling protrusions 12, and is almost the same as compressing the pipe sleeve. This locks the end of the curved portion 5 to the sleeve body 1 more firmly.

Further, in this third embodiment, the edge of the bent end portion 18 is straight, but as shown in FIGS. 11 and 12, an appropriate number of through holes 19 or notches 20 are formed along the edge. In some cases, it may be provided. In this case, when the main line 11 and the branch line 10 are gripped and the sleeve body 1 is compressed, these through holes 19 and notches 20
The flesh of the outer periphery of the buckling protrusion 12 bites in, and the bent edge 18 having the through hole 19 and the notch 20 adapts to the outer periphery of the buckling protrusion 12, making it more tightly adhered and more firmly formed. It is something that is locked in place.

[0020]

[Effects of the Invention] In this invention, two electric wires to be connected can be inserted into the electric wire gripping cylindrical hollow parts and the electric wire gripping grooves of the two first and second electric wire gripping parts, and compressed so as to surround them. , and the opening of the wire gripping groove is completely closed, and the curved portion on the other side of the sleeve body covers the outer periphery of the first wire gripping portion, so that each wire is firmly gripped by the sleeve of the present invention. . Moreover, since the sleeve grips each electric wire so as to surround the outer periphery thereof as described above, the outer periphery of each electric wire is not damaged and can be reused.

Further, in the sleeve of the present invention, since the first electric wire gripping part has a cylindrical hollow part for gripping the electric wire, when one end of the electric wire is inserted into the cylindrical hollow part, the electric wire is temporarily gripped. In this state, it can be brought close to the other wire and hooked onto the outer periphery of the other wire using the wire gripping groove of the second wire gripping portion. Therefore, the operator has both hands free and can compress the sleeve body from above using a compressor in this state. Therefore, the wire connection work is extremely simplified and the workability is good.

[Brief explanation of drawings]

[Fig. 1] A perspective view of a first embodiment of the present invention.

FIG. 2 is a partial perspective view of an application example of the curved portion of the first embodiment of the present invention.

FIG. 3 is a partial perspective view of an application example of the curved portion of the first embodiment of the present invention.

[Fig. 4] Cross-sectional view of the first embodiment of this invention

[Fig. 5] A perspective view showing the state of use of the first embodiment of the present invention.

FIG. 6 is a sectional view showing the compressed state of the electric wire according to the first embodiment of the present invention.

FIG. 7 is a plan view showing the sleeve in a wire compressed state according to the first embodiment of the present invention.

FIG. 8 is a sectional view of a die for compressing a sleeve according to the first embodiment of the present invention.

FIG. 9 is a sectional view showing a compressed state of the electric wire according to the second embodiment of the present invention.

FIG. 10: Side view of the third embodiment of the invention.

FIG. 11 is a partial perspective view showing an application example of the bent end portion of the third embodiment of the present invention.

FIG. 12 is a partial perspective view showing an application example of the bent end portion of the third embodiment of the present invention.

FIG. 13 is a sectional view showing a compressed state of the electric wire according to the third embodiment of the present invention.

[Fig. 14] Cross-sectional view before compression of electric wire in conventional example

[Figure 15
】Cross-sectional view showing the compressed state of the wire in the conventional example

[Explanation of symbols]

1 Sleeve body 2 Cylindrical hollow part for gripping electric wires 3 First wire gripping part 5 Curved part 6 Wire gripping groove 7 Second electric wire gripping part 10 Branch line 11 Main line 12 Buckling protrusion

Claims (1)

[Claims] 1. A first electric wire gripping part having a cylindrical hollow part for gripping the electric wire is provided by folding one side of a plate-shaped sleeve body, and the other side of the sleeve body is curved with the folded end inside, A second wire gripping portion having a wire gripping groove surrounded by the first wire gripping portion and the other side of the sleeve body is provided, and the curved portion on the other side of the sleeve body is overlapped and covered with the outer periphery of the first wire gripping portion. A compression sleeve for connecting electric wires that is characterized by its flexible shape.