JPH0955239A - Connector for connecting electrical wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector thin in structure, which can connect an electrical wire in one operation, and is suitable for installing it in a limited narrow space such as the bottom surface of a floor and the like. SOLUTION: A plurality of conductive metallic channel band plates 2,... are housed in parallel in the inside of a case, each electrical wire insertion hole 3 is formed at both right and left surfaces of the case, and paired right and left curved metallic spring plates 4 are mounted to each channel band plate 2. The flat base part 4a of each spring plate 4 is held by one side plate 2a of each channel band plate 2, and its portion folded back from the base part 4 at the electrical wire insertion hole side, is inclined toward the other side wall 2b along the electrical wire insertion direction, and is curved so as to be elastically in contact with the side wall 2b, so that a contact part 4b is thereby formed, and the other end of the base part 4a is folded so as to be inclined to the other side wall 2b of each channel band plate, so that a retaining locking piece 4c is thereby formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire connection suitable for connecting or branching electric wires which are mainly arranged on a lower surface of a narrow floor and connected to a floor heating appliance in a building such as a house or a building. It is about connectors.

[0002]

2. Description of the Related Art Conventionally, various types of connectors have been proposed which can connect an electric wire or a cable by a one-touch operation of only inserting the electric wire. This type of connector has a structure in which the receiving blade, that is, the contact part, bites into the bare wire to be inserted at a single point, so the wire locking action is insufficient, and the electrical connection is also point contact, resulting in poor connection. There is a problem that it is not suitable for passing a large current due to fear of heat generation. 2 to 3 consisting of a blade and a pressing piece
A point contact type has also been proposed in Japanese Utility Model Publication No. 3-13974, but it is impossible to remove an electric wire once connected by a complete fixing method from a connector, and the number of parts is large and the structure is complicated. There is such a problem. Further, these conventional connectors have a structure in which the contact portions with respect to the inserted electric wire come into contact with each other from above and below, so that the connector has a large vertical width and is not suitable for being housed in a narrow space such as the floor underside.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, an electric wire can be surely connected with one touch, and the electric wire is formed in a thin structure suitable for being installed in a limited narrow space such as a floor lower surface. The main purpose is to provide a connector with a simple structure at low cost by separating the upper and lower cases when necessary.

[0004]

In order to achieve the above object, the present invention takes the following technical means. That is, the electric wire connecting connector according to the present invention includes a thin synthetic resin case 1 in a plan view which is composed of an upper case 1a and a lower case 1b which are joined by engaging means. Inside the case 1, a plurality of conductor metal channel strips 2 ... Are accommodated side by side, and electric wire insertion ports 3 and 3 leading to these channel strips 2 are formed on both left and right sides of the case 1. A pair of left and right curved conductive metal spring plates 4 and 4 are attached to each channel strip 2, and the spring plate 4 has a flat base portion 4a held by one side plate 2a of the channel strip 2. The part folded back from the base on the wire insertion port side is inclined toward the other side wall 2b of the channel strip along the wire insertion direction and further curved to form the contact part 4b.
The other end is bent toward the other side wall 2b of the channel strip 2 to form a retaining engagement piece 4c. The curved contact portion 4b and the retaining engagement piece 4c are connected to the wire insertion port 3a. In this structure, it is arranged in line with the bare wire insertion hole 3a.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the above construction, as shown in FIG. 5, the bare wire 5a of the wire 5 is replaced with the bare wire insertion hole 3a of the wire insertion opening 3 to make the contact portion 4b of the spring plate 4b. Elastically contacts the surface of the bare wire 5a and presses it against the side wall 2b of the channel strip, and the surface contact ensures reliable electrical connection.
Contact a. When a force is applied in the pull-out direction of the bare wire, the locking piece 4c strongly engages with the bare wire due to an elastic reaction force, exerts a retaining action, and can reliably prevent the bare wire from being pulled out.

[0006]

Embodiments of the present invention will be described below with reference to the embodiments shown in the drawings. In FIG. 1, reference numeral 1 is a case composed of an upper case 1a and a lower case 1b which are separably coupled by an engagement means described later, and which has a square shape in a plan view and a thickness made of a synthetic resin material having a high insulating property. Is thinly formed.

Inside the case 1, a plurality of, in the present embodiment, three channel strips 2 made of a conductive metal are accommodated in parallel, and the wire insertion ports 3 and 3 leading to these channel strips 2 are provided in the case. In the floor heating apparatus of this embodiment, the bare wires 5a, 5a, 5a of the positive wires, the negative wires, and the ground wires are formed on both left and right sides of the wire 1. A pair of left and right curved conductive metal spring plates 4 and 4 are attached to each of the channel strips 2.

A flat base portion 4a of the spring plate 4 is held by one side plate 2a of the channel strip 2, and a portion of the spring plate 4 folded back from the base portion 2a on the side of the electric wire insertion port is directed toward the electric wire insertion direction, that is, the inner part of the case. And contacts the other side wall 2b of the channel strip, and is curved in a V shape to form a side wall 2b.
A contact portion 4b elastically contacting with is formed. Furthermore,
The other end of the base portion 4a is sharply bent and inclined toward the other side wall 2b of the channel strip 2 to form a retaining locking piece 4c. Further, the tip portion of the contact portion 4b and the retaining locking piece 4c which are curved in a V shape are arranged in line with the bare wire insertion hole 3a of the wire insertion port 3.

The engaging means of the upper and lower cases 1a and 1b are
As shown in FIG. 2, the engaging hole 6a of the claw piece 6 raised from the lower case 1b engages with the protrusion 7 formed on the side surface of the upper case 1a. Therefore, if necessary, the upper and lower cases 1a and 1b can be separated by disengaging the claw pieces 6 from the projections 7. In the present invention, instead of this engaging means, other engaging means may be detachably connected.

The channel strip 2 is formed of a metal such as brass having good conductivity and appropriate strength, and is formed in a U-shaped cross section with the opening facing upward. Further, in the above-described embodiment, the left and right spring plates 4 and 4 housed in the channel strip 2 are arranged in an asymmetrical manner, but it goes without saying that they may be arranged symmetrically.

The method of use of the present invention and the operation of each part are as follows. That is, as shown in FIG. 5, by making the bare wire 5a of the wire 5 into the bare wire insertion hole 3a of the wire insertion port 3, the contact portion 4b of the spring plate 4 elastically comes into surface contact with the surface of the bare wire 5a. Then, the side wall 2b of the channel strip is pressed, and at the same time, the tip of the locking piece 4c elastically contacts the bare wire 5a. When a force is applied in the pull-out direction of the bare wire, the locking piece 4c strongly engages with the bare wire due to an elastic reaction force, exerts a retaining action, and can reliably prevent the bare wire from being pulled out.
Since the contact portion of the spring plate is arranged in a horizontal posture so as to come into contact with the side wall of the channel strip, it is possible to minimize the vertical thickness of the case.

Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments, and the constitutional requirements are provided.
In addition, the object of the present invention can be achieved and the invention can be appropriately modified and carried out within the range in which the following effects are exhibited.

[0013]

As described above, according to the connector of the present invention, the bare wire can be surely brought into surface contact with the contact portion of the spring plate only by inserting the bare wire into the wire insertion port of the connector, and can be easily connected to other wires with one touch. Electrical connection can be achieved, and the retaining piece holds the wire insertion posture securely by biting, and the wire can be removed by separating the upper and lower cases if necessary. Wiring work is convenient. In addition, since the contact portion of the spring plate is arranged in a horizontal posture in contact with the side wall of the channel strip, the vertical thickness of the case can be made as thin as possible, and it is possible to reduce the thickness of the bottom surface of the narrow floor. Extremely useful as a connector for underfloor heating,
There is such an effect.

[Brief description of drawings]

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

FIG. 2 is a partial perspective view showing an engaging means of upper and lower cases in the connector.

FIG. 3 is a front view of the connector.

FIG. 4 is a sectional view taken along the line AA in FIG.

FIG. 5 is a sectional view similar to FIG. 3, showing a usage state of the connector.

[Explanation of symbols]

 1 case 1a upper case 1b lower case 2 channel strip 2a channel strip side wall 2b channel strip side wall 3 wire insertion port 4 spring plate 4a spring plate base 4b spring plate contact 4c spring plate locking piece 5 Wire 5a Bare wire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuma Yoshida 1 Inaba, Inami-cho, Higashitonami-gun, Toyama Prefecture Daiken Kogyo Co., Ltd.

Claims (1)

[Claims] 1. A thin synthetic resin case 1 having a rectangular shape in a plan view, which is composed of an upper case 1a and a lower case 1b, which are connected to each other by engaging means. The manufactured channel strips 2 are accommodated side by side, and the electric wire insertion ports 3 and 3 communicating with the respective channel strips 2 are formed on both the left and right sides of the case 1. The channel strips 2 have a pair of left and right sides. Curved conductor metal spring plates 4 and 4 are attached, and the spring plate 4 has a flat base portion 4a held by one side plate 2a of the channel strip 2 and is folded back from the base portion on the wire insertion port side. A contact portion 4b is formed which is inclined and curved toward the other side wall 2b of the channel strip along the wire insertion direction and elastically contacts the side wall 2b. The other end of the base 4a is the other side wall of the channel strip 2. A retaining locking piece 4c is formed by being bent and inclined toward 2b, and the curved contact portion 4b and the retaining locking piece 4c are aligned with the bare wire insertion hole 3a of the wire insertion port 3. Connector for electric wire connection that is arranged.