JPH07249435A - Conductive linear connector - Google Patents

Abstract

PURPOSE:To obtain a connector with the simple structure effective for a T-type contact, which can electrically connecting linear materials from three directions securely with the simple operation in the condition that they are perfectly sealed, at flow cost. CONSTITUTION:A conductive linear connector is formed of a casing 1 having opening parts 2 opened in three directions like T-shape, a ring-like fastening coupling 3 screwed with each opening 2, a ring-like elastic packing 4 installed inside each opening 2, and a T-type connector 5 made of conductive material and installed inside the casing 1. This T-type connector 5 is provided with insertion needles 6 respectively having the sharp tip, and each insertion needle 6 is arranged in the core of each opening part of the casing 1. Furthermore, the inner peripheral surface of the fastening coupling 3 or the casing 1 is formed into a tapered inclined surface so that the packing 4 is compressed in the diameter contracting direction by screwing the fastening coupling 3 toward the center of the casing 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-tight connection between linear heating elements in which carbonaceous short fibers are coated with an insulating coating, and between these linear heating elements and a covered electric wire from three sides of the T-shape. There is a connector. In the following, the linear heating element and the covered electric wire are collectively referred to as a conductive linear body.

[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. In particular, in such a linear heating element, a large number of linear heating elements are usually arranged in a ladder shape in parallel with two closed linear heating elements or lead wires, and each is electrically connected at a T-shaped contact. Is being used. However, at present, there is no connector which is effective for such a T-shaped contact portion and which satisfies the above requirements.

Accordingly, the present invention provides a connector effective for a T-shaped contact which is capable of electrically connecting linear bodies from three directions with a simple structure and at a low cost. The main purpose is to provide.

[0005]

In order to achieve the above object, the present invention takes the following technical means. That is, in the present invention, the casing (1) having a T-shaped opening (2) ... in three directions, and the ring-shaped tightening coupling screwed into each opening (2) ( 3) ... and the openings of each of the above
Ring-shaped elastic packing installed inside (2) (4) ...
And a T-shaped connecting body (5) made of a conductive material mounted in the casing (1), each of the T-shaped connecting bodies (5) having an insertion needle (6) ... The insertion needle (6) is arranged at the opening axis of the casing (1), and further by screwing the tightening coupling (3) toward the center of the casing (1). The tightening coupling (3) or the inner peripheral surface of the casing (1) is formed so as to be tapered in a tapered shape so as to compress the packing (4) in the diameter reducing direction.

[0006]

In the connector, as shown in FIG. 1, for example, short carbon fibers are introduced from the respective openings (2) of the casing in a state where the respective tightening couplings (3) are loosened, and the core wire (7a). ) Is inserted and the end face thereof is inserted into the insertion needle (6) of the T-shaped connector (5) in the casing. In this joined state, the core wire (7a) of the linear heating element is not exposed to the outside naked, and is compressed and electrically connected to the insertion needle (6) inside the insulating coating material (7b). Because it is a thing, the core wire
Even if (7a) is a relatively fragile aggregate bundle of short carbon fibers, reliable and highly efficient electrical joining can be obtained without causing partial shearing, tearing, or line breaking.
Then, the respective tightening couplings (3) are screwed toward the center of the casing to compress the inner packings (4) in the radial direction to compress the outer peripheral surface of the linear heating element (7). As a result, the inside of the connector is completely sealed in a watertight manner, and at the same time, the conductive linear members inserted from the three sides, that is, the linear heating elements (7), can be firmly connected via the connector.

[0007]

Embodiments of the present invention will be described below with reference to the embodiments shown in the drawings. 1 and 2 show a first embodiment of a connector according to the present invention. This connector is a T-shaped casing with openings (2) ...
(1), a ring-shaped tightening coupling (3) screwed into each opening (2), and a ring-shaped elastic packing (3) mounted inside each opening (2). 4) and a T-shaped connector (5) made of a conductive material and mounted in the casing (1). The casing (1) and the tightening coupling (3) are made of a synthetic resin material and have a packing.
(5) and (5 ') are formed of a natural or synthetic resin material having appropriate elasticity.

The T-connector (5) is provided with insertion needles (6) each having a sharp tip, and the insertion needles (6) are arranged at the axial center of the opening of the casing (1). The T-connector (5)
Are integrated by insert molding means when the casing (1) is molded.

Further, by screwing the tightening couplings (3) ... toward the center of the casing (1), the packing (4) is compressed in the diameter reducing direction,
The inner peripheral surface of the casing (1) that cooperates with the packing is formed to be tapered. The inclined surface for compressing the packing in the diameter reducing direction may be formed on the tightening coupling (3) side as shown in FIG. Further, the outer peripheral surface of the tightening coupling (3) is preferably formed with a non-slip slit or a polygon such as a hexagon so that it can be easily rotated by a hand or a tool.

In the present embodiment shown in FIGS. 1 and 2, as the linear body to be connected, a carbon short fiber is used as a core wire (7a), and the core wire (1a) is covered with a flexible insulating coating material (1b). Heating element
(7) ... is applied. As shown in FIG. 1, the linear heating elements (7) are opened toward the respective three sides of the casing (2) with the respective tightening couplings (3) loosened.
Inserted from ... and its end face is a T-shaped connector inside the casing
Insert it into the insertion needle (6) of (5). In this joined state, the core wire (7a) of the linear heating element is not exposed to the outside naked, and is compressed and electrically connected to the insertion needle (6) inside the insulating coating material (7b). Therefore, even if the core wire (7a) is a relatively fragile bundle of short carbon fibers, electrical connection can be reliably obtained without partial shearing, tearing, or line breaking. Then each tightening coupling (3)
When the screw is advanced toward the center of the casing, the packings (4) inside are compressed in the diameter reducing direction to compress the outer peripheral surface of the linear heating element (7). As a result, the inside of the connector is completely sealed in a watertight manner, and at the same time, each conductive linear body inserted from three sides, that is, the linear heating element (7), can be firmly connected through the connector. is there.

In the above embodiment, all of the conductive linear members to be connected have the carbonaceous short fibers as the core wire (7a) and the linear heating element.
Although the example of (7) is shown, the type of linear body is not specified. For example, as shown in FIGS. 3 and 4, general covered electric wires (8), (8) are inserted from the left and right to connect to the upper linear heating element (7), or although not shown. It is also possible to connect the covered electric wires together.

The embodiments considered to be typical of the present invention have been described above. However, the present invention is not necessarily limited to the structures of these embodiments, and has the constitutional requirements.
In addition, the object of the present invention can be achieved, and the invention can be appropriately modified and implemented within the range of the following effects.

[0013]

As described above, in the connector of the present invention, the ring-shaped elastic packing is compressed in the radial direction by the tightening of the coupling so that the outer peripheral surface of the conductive linear body (the linear heating element or the covered electric wire) is covered. By compressing the wire, the inside of the connector is completely sealed in a watertight manner, and at the same time, the linear body from the three sides, which is connected at the same time, can be physically strongly connected to the connector, which makes it possible to pull the external force or the like. It is possible to reliably prevent the linear body from separating from the connector. Particularly, 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. The body can be held, 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 fiber, which causes inconvenience such as connection failure during use. Never. Furthermore, since the linear bodies are electrically connected to each other by the insertion of the insertion needle of the connecting body, even if the core of the linear body to be connected is a relatively fragile bundle of short carbon fibers. There are various remarkable effects such as reliable electrical connection without partial shearing or tearing.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view showing a usage state of the connector.

FIG. 3 is a sectional front view showing another usage state of the connector.

FIG. 4 is a partial sectional front view showing another embodiment of the connector.

[Explanation of symbols]

 (1) Casing (2) Opening (3) Tightening coupling (4) Packing (5) Connection body (6) Insertion needle for connection body (7) Linear heating element

Claims (1)

[Claims] 1. A casing (1) having T-shaped openings (2) ... in three directions, and ring-shaped tightening couplings (3) screwed into the respective openings (2). , Each of the openings
Ring-shaped elastic packing installed inside (2) (4) ...
And a T-shaped connecting body (5) made of a conductive material mounted in the casing (1), each of the T-shaped connecting bodies (5) having an insertion needle (6) ... The insertion needle (6) is arranged at the opening axis of the casing (1), and further by screwing the tightening coupling (3) toward the center of the casing (1). A conductor-like connector formed by tapering the inner peripheral surface of the tightening coupling (3) or the casing (1) so as to compress the packing (4) in the radial direction.