JPH07230848A - Connector for conductive linear body - Google Patents

Abstract

PURPOSE:To electrically connect left and right linear bodies to each other in a completely sealed condition by reducing a diameter of an inner peripheral surface of fastening coupling toward the outside end, and compressing packing between prescribed outer peripheral surface and inner peripheral surface. CONSTITUTION:A connector A is composed of a cylindrical main body and screws 3 and 3' having opening parts 2 and 2' on both ends, fastening couplings 4 and 4' and packings 5 and 5'. Here, the screws 3 and 3' are formed at the same pitch on outer peripheral surfaces of the opening parts 2 and 2' by turning the spiral direction the other way, and screw-fit the ring-shaped couplings 4 and 4'. The couplings 4 and 4' are formed in their slant posture so that the diameter of the inner peripheral surface is reduced toward the outside end. Thereby, when the couplings 4 and 4' are spirally advanced toward the center of the main body, the packing 5 is compressed between an outer peripheral surface of a linear body inserted in the opening part 2 and an inner peripheral surface of the coupling 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for connecting a conductive linear body such as a linear heating element or a coated electric wire in which carbonaceous short fibers are coated with an insulating coating. The present invention relates to a connector suitable for connecting a heating element in a watertight manner.

[0002]

2. Description of the Related Art In recent years, a linear heat generated by covering carbonaceous short fibers with an insulating coating on a snow-melting device buried in a road or roof in a snowfall area and a heating or heat-insulating device buried in a floor or wall of a building. The body has come to be used as an effective heat carrier.
This heating element is very effective in that it has excellent flexibility, strength and thermal efficiency, and that a desired electric resistance value can be easily set.

[0003]

In many cases, this linear heating element is used by being buried in a road, a roof or the like, and therefore, a connecting portion between heating elements or a connection between a heating element and a covered electric wire. A completely watertight connector is required in some parts. In addition, it is preferable that the connecting work can be performed quickly and easily with a simple operation. However, at present, no connector has been found that satisfies such requirements.

Therefore, the main object of the present invention is to provide a connector which can electrically connect the left and right linear members electrically with a simple operation surely and completely and with a simple structure at a low cost. It is what

[0005]

In order to achieve the above object, the present invention takes the following technical means. That is, in the present invention, the cylindrical body (1) having the openings (2) and (2 ') at both ends, and the spiral directions on the outer peripheral surfaces of the openings (2) and (2'), respectively. Reversely, screws (3), (3 ') formed with the same pitch,
The ring-shaped tightening couplings (4) and (4 ′) screwed to the screws (3) and (3 ′) and mounted on the inner surfaces of the tightening couplings (4) and (4 ′). Ring-shaped packing made of elastic material (5),
(5 '), and the packings (5), (5') are opened by screwing the tightening couplings (4), (4 ') toward the center of the tubular body (1). Tightening coupling (4), (4 ') so as to compress between the outer peripheral surface of the linear body inserted in part (2) and the inner peripheral surface of tightening couplings (4), (4'). The inner peripheral surface of () is formed so as to be inclined so that its diameter becomes smaller toward the outer end.

[0006]

[Operation] The connector (A) is, as shown in FIG.
One of the tightening couplings, for example, the left tightening coupling (4 ') is separated from the tubular body (1), and the carbon body is opened from the opening (2) on the right side of the tubular body. Insert one linear heating element (6) with fibers inside and pull it out to the left, and for example, 2 on the packing (5 ') of the left coupling (4').
Book cores (6 '), (6') through each core wire (6a),
After stacking (6'a) and (6'a) and crimping them together with the metal crimp sleeve (7), both left and right tightening couplings (4),
(4 ') is screwed into the screws (3) and (3') of the tubular body (1) at the same time, and the packings (5) and (5 ') inside the linear body (covered wire and linear heating element) ) And the inner peripheral surface of the tightening coupling (4). As a result, the inside of the connector is completely sealed in a watertight manner, and at the same time, the linear wires, that is, the covered electric wires (6 ') and (6') and the linear heating element (6) are firmly connected through the connector. You can

[0007]

Embodiments of the present invention will be described below with reference to the embodiments shown in the drawings. 1 to 4, reference numeral (A) indicates a connector according to the present invention. This connector (A) has a tubular body (1) having openings (2) and (2 ') at both ends, and the opening
Screws (3) and (3 ') formed on the outer peripheral surface of (2) and (2') at the same pitch with the spiral direction reversed, and screwed to the screws (3) and (3 '). Ring-shaped tightening couplings (4), (4 ') and packings (5), (5') attached to the inner surfaces of the tightening couplings (4), (4 '). It The tubular body (1) and the tightening couplings (4), (4 ') are made of synthetic resin material, and the packings (5), (5') are made of natural or synthetic resin material having appropriate elasticity. Has been formed.

The ring-shaped tightening coupling (4),
The inner peripheral surface of (4 ') is formed so as to be inclined such that its diameter becomes smaller toward the outer end, whereby the tightening couplings (4) and (4') are attached to the cylindrical main body (1 ), The inner packing (5) is compressed between the outer peripheral surface of the linear body inserted in the opening (2) and the inner peripheral surface of the tightening coupling (4). Are formed. The outer peripheral surfaces of the tightening couplings (4) and (4 ') are formed in a polygonal shape such as a hexagon so that they can be easily gripped by a tool. Also,
The outer peripheral surface (1a) of the intermediate portion of the cylindrical body (1) is also formed in a polygonal shape such as a hexagon so that it can be easily grasped by a tool.

In the present embodiment, as a linear body to be connected, the opening (2) on the right side in the drawing corresponds to one linear heating element (6) containing carbonaceous short fibers, and the opening (2) on the left side in FIG. The opening (2 ') is designed so as to correspond to the two covered electric wires (6') and (6 '). For this reason, the diameter of the left opening (2 ') is formed slightly larger than that of the right, and the packing (5') inside the left tightening coupling (4 ') is covered with each coating. Two holes are provided for individually inserting the electric wires.

Connector (A) configured as described above
As shown in FIG. 3, one of the tightening couplings, for example, the left tightening coupling (4 ′) is attached to the tubular body (1).
In the state of being separated from, the single linear heating element (6) containing the carbonaceous short fibers is inserted from the opening (2) on the right side of the cylindrical main body and pulled out to the left side, and the left coupling ( Insert the two covered wires (6 ') and (6') into the packing (5 ') of 4') and stack the core wires (6a), (6'a) and (6'a) on top of each other. After crimping with the metal crimp sleeve (7), screw the left and right tightening couplings (4) and (4 ') onto the screws (3) and (3') of the tubular body (1) at the same time. Move the inner packings (5) and (5 ') to the outer peripheral surface of the linear body (covered wire and linear heating element) and the tightening coupling (4).
It is compressed between the inner peripheral surface and. As a result, the inside of the connector is completely sealed in a watertight manner, and at the same time, the linear wires, that is, the covered electric wires (6 ') and (6') and the linear heating element (6) are firmly connected through the connector. You can

The tightening couplings (4) and (4 ') are fastened to the tubular body (1) by, for example, the left and right couplings (4) and (4) as shown by the chain double-dashed line in FIG. 4 ') as one tool
In the state of being gripped by (8), by rotating the cylindrical main body (1) in a predetermined direction with a rotating tool, the screws (3), (3 The left and right couplings (4) and (4 ') can be screwed simultaneously along the'). In this case, the tubular body (1) may be fixed and the tightening couplings (4) and (4 ′) may be rotated simultaneously by the tool (8).

In the above embodiment, a specific example is shown in which the linear bodies to be connected are two covered electric wires and one linear heating element, but the combination of the linear bodies is not specified. For example, as shown in FIG. 5, one linear heating element (6) on each side,
It is also possible to connect (6), or, although not shown, to connect one covered electric wire and one linear heating element, or to connect the covered electric wires together.

Although the embodiments considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments. For example, the tubular body (1)
In addition, instead of the polygonal shape formed on the outer peripheral surfaces of the tightening couplings (4) and (4 ′), sleeve grooves that can be easily gripped by the tool may be formed at intervals in the circumferential direction.
Further, the means for connecting the core wires of the left and right linear bodies inside the connector is not limited to the crimp sleeve as shown in the drawing, and any means may be used as long as they are electrically joined. . In addition, the present invention has the constitutional requirements, achieves the object of the present invention, and can be appropriately modified and implemented within a range in which the following effects are exhibited.

[0014]

As described above, the coupling of the present invention is
The ring-shaped elastic packing by tightening the coupling from the left and right is compressed between the outer peripheral surface of the linear body and the inner peripheral surface of the tightening coupling, thereby completely sealing the inside of the connector in a watertight manner. The left and right linear bodies to be coupled and the connector can be physically strongly coupled, and thus the linear body can be reliably prevented from being separated from the connector by a pulling action by an external force.
In particular, in the connector of the present invention, since the linear body to be connected is compressed by the surface pressure by the elastic packing and gripped by the outer peripheral surface of the covered portion, the linear body is gently linear despite the strong gripping force. Can hold the body and therefore
The load such as pulling is not directly applied to the joint portion of the core wire formed by the relatively fragile short carbon fibers, so that inconvenience such as connection failure does not occur during use.
Furthermore, since the screws for receiving the left and right tightening couplings are formed in the same pitch with the spiral directions reversed, the tubular main body can be rotated while holding the left and right couplings with one tool. Alternatively, by fixing the tubular body and rotating the left and right tightening couplings simultaneously with one tool, the left and right couplings can be tightened at the same time by one tightening operation. It is easy to perform, and in addition, it is possible to provide it at low cost because its structure is formed with a small number of parts by a pair of left and right tightening couplings provided with a tubular body and packing. It has a great effect.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a connector according to the present invention.

FIG. 2 is a sectional view of the connector.

FIG. 3 is a partial sectional front view showing a process of using the connector.

FIG. 4 is a cross-sectional view showing a usage state of the connector.

FIG. 5 is a front view showing another embodiment of the connector according to the present invention.

[Explanation of symbols]

 (1) Cylindrical body (2), (2 ') Opening (3), (3') Screw (4), (4 ') Tightening coupling (5), (5') Packing

Claims (1)

[Claims] 1. A cylindrical main body (1) having openings (2) and (2 ') at both ends, and the same outer peripheral surface of the openings (2) and (2') with their spiral directions reversed. Screws (3), (3 ') formed with pitch,
The ring-shaped tightening couplings (4) and (4 ′) screwed to the screws (3) and (3 ′) and mounted on the inner surfaces of the tightening couplings (4) and (4 ′). Ring-shaped packing made of elastic material (5),
(5 '), and the packings (5), (5') are opened by screwing the tightening couplings (4), (4 ') toward the center of the tubular body (1). Tightening coupling (4), (4 ') so as to compress between the outer peripheral surface of the linear body inserted in part (2) and the inner peripheral surface of tightening couplings (4), (4'). The connector of the conductive linear body is formed so that the inner peripheral surface of () is inclined so that its diameter becomes smaller toward the outer end.