JPH087940A - Plug-in type cable sleeve - Google Patents

Abstract

PURPOSE:To provide the plug-in type cable sleeve which can assure reliability, watertightness and the improvement of compacting for the electrical and mechanical connections of a plug member and a reception member, the reliable locking mechanism of a fastening ring used for the mechanical connections, and reliable water tightness for a cable compression section simple in structure. CONSTITUTION:A plug member 1 is equipped with an insertion section 6 at one end to a reception member, a conductor installation section 7 at the other end, a large diameter screw section 8 provided between the insertion section 6 and the conductor installation section 7, and with an O-ring 9 provided at the base section of the insertion section 6. The reception member 2 includes a receiving hole 10 receiving the insertion section 6 of the plug member 1 at its one end. A multi-contact point band 11 is provided in the inner surface of the receiving hole 10, and a fastening ring 3 is equipped with a female screw 13 at its one end, which is threadedly engaged with the large diameter screw section 8, and with a step section 14 at the other end, which acts as a retaining section. Fall-out is prevented by an engagement with a step section 14' provided at the reception member 2 side, and the fastening ring 3 held with a fixing spring 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a removable plug-in type electric wire sleeve.

[0002]

2. Description of the Related Art As an open / close type jumper sleeve, as shown in FIG.
The one shown in FIG. 11 is known. This is the plug member a
And a receiving ring b for receiving this and a tightening ring c screwed onto the receiving cup b. The plug member a (FIG. 8) has a large-diameter threaded portion f between the insertion portion d into the receipt member b and the conductor compression portion e. The receiving part of the plug member a is provided with a dividing contact piece g which is divided in the circumferential direction as shown in FIG.
Has a large diameter portion i. Further, the tightening ring c is provided at its inner end portion with a sloped portion corresponding to the sloped portion j of the receipt member b and a female screw portion screwed into the large diameter screw portion f of the plug member a. Then, the receiving member b and the plug member a are tightened and fixed by a tightening ring c, but a fixing spring k as shown in FIG. 11 is used as a locking mechanism for the structure so that the tightening ring c does not rotate. The fixed spring k is lowered from the state of the two-dot chain line in FIG. 10 to the position of the solid line, and the tip of the fixed spring k presses the side surface of the tightening ring c. Furthermore, a watertight rubber tube m is fitted in the electric wire compression portion to make it watertight.

[0003]

As described above, in the conventional plug-in sleeve, the opening / closing portion electrically connects the introduction portion d of the plug member and the divided contact piece g of the receiving member b. In order to obtain sufficient electrical performance, the opening / closing part was large and heavy in design, and watertightness was not particularly considered. Further, the tightening ring is also pressed and locked by the fixed spring k, but there is a possibility that the tightening ring may turn when it is forcibly turned. Furthermore, in the wire compression section, the wire sleeve is compressed and connected via a waterproof rubber tube to achieve watertightness, but there were problems such as the outer diameter of the sleeve becoming large and the number of compressions increasing due to the design. . The present invention improves on such a conventional structure, and ensures the reliability and watertightness of the electromechanical connection between the plug member and the receiving member, compactness, a reliable locking mechanism of the tightening ring used for the mechanical connection, and also An object of the present invention is to provide a plug-in type electric wire sleeve in which the electric wire compression section has a simple structure and can secure more reliable watertightness.

[0004]

A plug member 1, a receiving member 2 for receiving the plug member 1, and a large-diameter screw portion 8 provided on the plug member 1 so as to be slidably inserted in the axial direction on the receiving member 2. Tightening ring 3 that is screwed into the plug member 1 and the plug member 1
Is provided at one end of the insertion portion 6 into the receiving member, the other end of the conductor attachment portion 7, the large diameter screw portion 8 provided between the insertion portion 6 and the conductor attachment portion 7, and the base portion of the insertion portion 6. The O-ring 9 is provided, and the receiving member 2 has a receiving hole 10 for receiving the insertion portion 6 of the plug member 1 at one end.
A multi-contact band 11 is provided on the inner surface of the plug, and the tightening ring 3 has a female screw 13 that engages with the large-diameter screw portion 8 of the plug member 1 at one end and a step portion 14 at the other end for preventing the screw from coming off. There is.

Further, a fixing spring 5 for preventing loosening is provided on the tightening ring 3.
The fixed spring 5 is formed of a single linear material, has both ends attached to a hole 5a formed on the diameter near the one end of the tightening ring 3, and has a rising portion 5b at the other end folded portion. The inward projection 5c formed on the rising portion 5b is brought into contact with the end surface of the large-diameter screw portion 8 and held by the hugging spring force. Then, a fixed spring 5'for preventing the tightening ring 3 from being loosened is formed of a linear material, and both ends 5'g are inserted into two holes 5'a provided on the diameter on the side of the receipt member 2 and at the middle portion. A semicircular rising portion 5'd, and an inward protrusion 5'at the folded portion.
An inward projection 5'provided on the intermediate rising portion 5'd and the end rising portion 5'e.
The tightening ring 3 is held and held with f.

Further, a fixing spring 5 "for preventing the tightening ring 3 from loosening is formed of a single linear material, and a fixed end 5" g is formed in a hole 5 "a provided on the diameter of the receiving member 2 side. Installed,
A rising portion 5 "d crossing each other is formed in the middle portion, and an end rising portion 5" e having an inward projection 5 "f is formed in the folded portion, and the rising portion 5" d and the end rising portion in the middle portion are formed. The tightening ring 3 is held and held by the inward projection 5 ″ f provided on the 5 ″ e. Further, the plug member 1 and the receiving member 2
A rubber packing 4 having a plurality of inner and outer peripheral grooves was fitted into the joint between the wire and the electric wire.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a plug-in type electric wire sleeve according to the present invention.
It is sectional drawing in the connection state of the tab. 1 is a plug member,
2 is a receiving member for receiving this, 3 is a tightening ring for connecting the two, 4 is rubber packing for the wire connecting portion, and 5
Is a fixed spring that locks the tightening ring 3.

The plug member 1 (FIG. 1) has a large-diameter screw portion 8 between the insertion portion 6 into the receipt member 2 and the conductor mounting portion 7. Reference numeral 9 is an O-ring provided at the base of the insertion portion 6.
When the insertion portion 6 is inserted, the receiving hole 1 of the receipt member 2
The inner surface of the mouth portion of 0 and the O-ring 9 are in contact with each other to prevent water from entering. The receiving member 2 has a receiving hole 10 into which the plug member 1 is inserted, and the receiving hole 10 has a multi-contact band 11 therein.
(Fig. 4) is attached. Reference numeral 12 is a band stop ring adjacent to the multi-contact band 11.

The multi-contact band 11 has the structure shown in FIG. 4, and its features are as follows. a) The number of contacts can be set according to the current capacity. For example, 10 contacts can be made in a length of 25.4 mm (1 inch). b) It is used for rotary type or contacts that slide with a weak force, and it is light and small, and good electrical connection is possible. c) Energization at 20 A or less per band is possible. d) The material is beryllium copper having a spring property and plated with silver. The number of bands is 12 in OC38mm ² .
If the number of sheets is one and the plug diameter is φ10 mm, the current capacity per one band is 17.6A.

The tightening ring 3 has an internal thread 13 at one end which is screwed into the large-diameter threaded portion 8 of the plug member 1, and the stepped portion 1 at the other end.
4, and is configured so as to engage with a stepped portion 14 'provided on the receiving member 2 side and prevent further movement in the axial direction.
As shown in Fig. 1, the conductor portion of the stripped electric wire is the plug member 1
Alternatively, in the conductor mounting portion 7 of the receipt member 2, the covered portion is inserted in the rubber packing 4. The conductor portion is compressed from the outside of the plug member 1 or the receptacle member 2, and the covered portion and the connection portion with the plug member 1 or the receptacle member 2 are covered with a rubber packing 4 to achieve watertightness.
The rubber packing 4 has an annular groove 4a on the outer peripheral surface as shown in FIG.
Is provided to improve the flexibility of following the bending of the electric wire. Further, on the inner peripheral surface, an annular projection 4b is provided which fits into a groove provided in the plug member 1 or the receiving member 2. 4c
Is an annular groove provided on the inner surface of the rubber packing 4, and if a filler or the like is enclosed in a gap formed between the rubber packing 4 and the covering portion of the connection electric wire, the watertightness is further improved. The retainer is more secure. At the time of compression connection with the electric wire, the compression die is used to perform compression twice each on the left and right with a width indicated by symbol w in FIG. 2, and the rubber packing 4 portion is not compressed.

The fixed spring 5 is made of, for example, a stainless wire and is attached by inserting both ends into two holes 5a provided on the diameter of the tightening ring 3, as shown in FIG. Then, the inward projection 5c of the rising portion 5b of the fixed spring 5 is brought into contact with the end surface of the large-diameter screw portion 8 provided on the plug member 1 and pressed by the spring force. That is, as shown in FIG. 5, the fixing spring 5 made of a linear material holds the tightening ring 3 and fixes it.

Alternatively, there are two holes 5'a provided with a fixed end 5'g of a linear material on the diameter of the receiving member 2 side like a fixed spring 5'shown in FIGS. 6 (a) and 6 (b). And the end rising part 5'e is formed in the folded part and the rising part 5'd is formed in the middle part, and the inward protrusion provided in the rising part 5'd of the middle part and the end rising part 5'e. With the portion 5'f, the tightening ring 3 is held and held to prevent the tightening ring 3 from rotating. The inward projection 5'f is brought into contact with the end surface of the large-diameter screw portion 8 provided on the plug member 1.

Further, as shown in FIG. 6 (c), the fixed end 5 "g of the linear material like the fixed spring 5" is attached to the two holes provided on the diameter on the side of the receipt member 2 and crossed with each other in the middle portion. , A semicircular arc-shaped intermediate rising portion 5 "d having an approximately equal diameter, and an end rising portion 5" e formed at the folded portion, and the middle rising portion 5 "d and the end rising portion 5" e are formed. The tightening ring 3 may be held and held by the inward projection 5 ″ f provided on the upper part of the plug to prevent the tightening ring 3 from rotating. The end face of the large-diameter screw portion 8 provided on the. When the fixed spring 5 ″ is fitted due to the presence of the intermediate rising portion 5 ″ d which crosses each other, a lateral spreading force is exerted on the side portion of the tightening ring 3 to fix it to the intermediate rising portion 5 ″ d. A tightening force acts between the ends 5 "g (Fig. 6).
(c)). Therefore, the force for hugging the tightening ring 3 becomes strong, and the effect of preventing loosening becomes great. Also, the hole 5 "a of the fixed spring 5"
At the fixed end 5 ″ g of the fixed spring 5 ″ g, the force toward the center of the sleeve is exerted, so that the fixed spring 5 ″ itself does not easily come off. Plug member 1
Also, a rubber packing 4 having a plurality of peripheral grooves 4a on the outer peripheral surface and a peripheral groove 4c on the inner peripheral surface at the joint between the receiving member 2 and the electric wire.
Is inserted to achieve watertightness and flexibility of the joint.

[0014]

[Effect] Since an O-ring is provided at the insertion portion of the plug member,
The plug-in section is watertight, and no need for waterproof covers. Further, since the rubber packing is inserted into the electric wire connecting portion, the waterproof rubber tube is not interposed in the electric wire compressing portion as in the conventional case and is not compressed from above the rubber packing, so that the packing is not deteriorated and the watertightness is further improved. You can Furthermore, since the fixed spring for preventing loosening of the screw tightening part has a structure that does not rotate the tightening ring due to the spring pressing force,
It became safer. By improving the watertight structure as above,
The outer diameter of the sleeve can be reduced. In addition, the number of compressions at the time of connection can be halved compared to the conventional type, and the work is greatly facilitated. Further, in the opening / closing part, since the multi-contact band is adopted, it is lightweight, has a compact structure, and is excellent in electrical conductivity.

[Brief description of drawings]

FIG. 1 is a sectional view of a plug-in type electric wire sleeve according to the present invention.

FIG. 2 is a side view showing a connected state of the plug-in type electric wire sleeve according to the present invention.

FIG. 3 is a detailed view of the vicinity of the tightening ring.

FIG. 4 is a development view of a multi-contact band.

FIG. 5 is a first example of a fixed spring.

FIG. 6 is another example of a fixed spring.

FIG. 7 is a known open / close type jumper sleeve.

FIG. 8 is a detailed view of a plug member.

FIG. 9 is a detailed view of the receipt member.

FIG. 10 shows a conventional fixed spring.

FIG. 11 is a perspective view of a known fixed spring.

[Explanation of symbols]

1 Plug member 2 Resep member 3 Tightening ring 4 Rubber packing 4a Annular groove 4b Annular protrusion 4c Annular groove 5,5 ', 5 "Fixed spring 5a, 5'a, 5" a Hole 5b Rise 5c Inward protrusion 5'd, 5 "d (intermediate part) rising part 5'e, 5" e end rising part 5'f, 5 "f inward projection 5'g, 5" g fixed end 6 insertion part 7 conductor mounting Part 8 Large-diameter screw part 9 O-ring 10 Receiving hole 11 Multi-contact band 12 Band stop ring 13 Female thread 14, 14 'Stepped part 14 "Fall prevention ring

Claims (5)

[Claims] 1. A plug member (1), a receiving member (2) for receiving the plug member, and a large member provided on the plug member (1) slidably fitted in the receiving member (2) in the axial direction. Diameter screw part
The plug member (1) is composed of a tightening ring (3) screwed into (8), and the plug member (1) has an insertion portion (6) at one end and a conductor mounting portion (7) at the other end. The large-diameter screw portion (8) provided between the portion (6) and the conductor mounting portion (7) and the O-ring (9) provided at the base portion of the insertion portion (6) are provided, )
Has a receiving hole (10) at one end for receiving the insertion portion (6) of the plug member (1), and the multi-contact band is provided on the inner surface of the receiving hole (10).
(11) is provided, and the tightening ring (3) is provided at one end with a female screw (13) that is screwed into the large-diameter screw portion (8) of the plug member (1). -Boo. 2. A fixing spring for preventing the tightening ring (3) from loosening.
(5) is provided, and this fixed spring (5) is formed of a single linear material, and both ends are attached to a hole (5a) drilled on the diameter near one end of the tightening ring (3), Rising part at the other end turning part
(5b) is formed, and the inward projection (5c) provided on the rising portion (5b) is brought into contact with the end face of the large-diameter screw portion (8) and held by the hugging spring force. Plug-in type wire sleeve
Boo. 3. A fixed spring for preventing the tightening ring (3) from loosening.
(5 ') is made of linear material and both ends (5'g) are
Inserted in two holes (5'a) on the diameter of (2) side, semicircular rising part (5'd) in the middle part, and inward projection (5'f) in the folded part. The end rising part (5'e) is formed, and is tightened by the middle rising part (5'd) and the inward projection (5'f) provided on the end rising part (5'e). The plug-in type electric wire sleeve according to claim 1, wherein the ring (3) is held and held. 4. A fixing spring for preventing the tightening ring (3) from loosening.
(5 ″) is made of linear material and both ends (5 ″ g) are received
It is attached to the hole (5 ″ a) on the diameter on the (2) side, has a rising part (5 ″ d) crossing each other in the middle part, and an inward projection (5 ″ f) in the folded part. Form the edge rising part (5 ″ e),
The tightening ring (3) is held and held by a rising portion (5 ″ d) of an intermediate portion and an inward protrusion (5 ″ f) provided at an end rising portion (5 ″ e). Plug-in type electric wire sleeve. 5. The plug-in type electric wire sleeve according to claim 1, wherein a rubber packing (4) having a plurality of inner and outer peripheral grooves is fitted in a joint between the plug member (1) and the receiving member (2) and the electric wire.
Boo.