JPH0134845Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to a cord fastener.

(Prior Art) Generally, in communication lines such as telephones, a normal round cord is used as an indoor drop-in line. For this reason, such cords are tightened using special tightening tools such as semicircular ones.

By the way, in recent years, due to the diversification of communication lines, the number of required internal cords has increased, and it has become necessary to use flat cables for indoor lead-in lines.

However, there is still no need to use flat cables in all cases, and there has therefore been a need for a cord clamping tool that can clamp round cords and flat cables, respectively.

(Purpose of the invention) In view of the above, the present invention aims to provide a cord tightening tool that can tighten round cords and flat cables respectively.

(Structure of the invention) In order to achieve the above object, the present invention includes a substantially box-shaped fastener main body, a mounting piece having mounting holes provided at both left and right ends of the fastener main body, and a mounting piece provided on the bottom surface of the fastener main body. The present invention is characterized in that a cord tightening device is constructed from an opening and a tongue extending from one end of the opening.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. In addition, in the following explanation, the case where this example is applied to a connector will be explained as an example, but this is not limited to connectors, and it goes without saying that it can be used for tightening cords in other general electrical equipment, etc. do not have.

In FIG. 1, 1 indicates a connector,
This mainly consists of a connector body 2 and a fastener 4. (Although there is another cover that can be placed over the connector 1, it is not shown in the figure.) The connector main body 2 is formed of a synthetic resin material and has a substantially rectangular shape. A holding portion 3 is recessed in the front end portion of the connector body 2 (left side in FIG. 1), and screw holes 3a are provided on both sides of the holding portion 3. In this example, the holding portion 3 is formed to have a substantially trapezoidal cross section so that a cord, etc., which will be described later, can be tightened well (that is, so that the coefficient of friction is large). However, this may have a substantially U-shaped cross section as shown in FIG. 8, or a substantially saw-shaped cross section as shown in FIG. 9.

On the other hand, a terminal body 2a is provided at the rear of the connector body 2 (to the right in FIG. 1). This terminal main body 2a is for connecting cords, and in this example, four screw holes 2b are provided so that four cords can be connected. A screw 8 having a washer 7 is screwed into this screw hole 2b.

However, the terminal main body 2a may have any structure, and is not limited to what is shown in the drawings.

Next, the fastener 4 will be explained. As shown in FIG. 2, this fastener 4 includes a box-shaped fastener main body 5, and mounting holes 6a provided at both left and right ends (front and rear in FIG. 2) of the fastener main body 5.
It consists of a tongue piece 5b provided at the lower part of the fastener main body 5.

The fastener main body 5 is formed by bending the front and back (left and right in FIG. 2) of a flat plate piece into a U-shape, and further by bending the left and right sides (front and back in FIG. 2) of the flat plate. By doing so, the attachment piece 6 is formed. The attachment piece 6 has an attachment hole 6a formed therein.

On the other hand, a rectangular opening 5a is provided on the lower surface of the fastener main body 5, and a tongue piece 5b is formed extending from one end of the opening 5a. In this example, the tongue piece 5b and the opening 5a are connected to the fastener main body 5.
A U-shaped cut is made in the lower surface of the tongue, and by bending this cut portion downward, the tongue piece 5b and the opening 5a are formed at the same time.

In this example, a gap L of a predetermined width is provided between the tongue piece 5b and the opening 5a, as shown in FIG. This is done by actively bending the round cord 10 into the opening 5a as shown in the figure.
In order to securely hold the round cord 10, when the tongue piece 5b is bent, the round cord 10 is cut by the end face of the tongue piece 5b and the end face of the opening 5a. This prevents the user from being exposed.

Regarding the rear end portion 5b, due to the reaction force received from the holding portion 3 when tightening with the screw 9,
In this example, it is made of a relatively soft metal material so that it can be easily bent. (In this example, the tongue piece 5b is formed by punching, so the entire fastening tool 4 is made of a relatively soft metal material.) Next, the operation and effect will be explained. first,
To explain the case of connecting a round cord to the connector 1, in this case, as shown in FIG. After that, the fastener 4 is tightened with the screw 9.

Then, the tongue piece 5b receives a reaction force from the holding part 3 due to the tightening force of the screw 9 and bends. Then, the round cord 10 is held by the rear end portion 5b in a dogleg shape inside the opening portion 5a as shown in FIG. In addition, the tongue piece 5
Since b is curved in advance so as to easily hold the round cord 10, a good holding state can be obtained.

On the other hand, when using the flat cable 11, insert the flat cable 11 between the tongue piece 5b and the holding part 3 as shown in FIG. .

Then, the tongue piece 5b first comes into contact with the flat cable 11, but when the screw 9 is further tightened while the tongue piece 5b is in contact with the flat cable 11, the holding part 3
The tongue piece 5b is pushed into the inside of the opening 5a by the reaction force received from the tongue piece 5b.

Then, when screw 9 is further tightened, tongue piece 5
b is completely pushed into the opening 5a, so that the bottom surface of the fastener main body 5 finally comes into contact with the flat cable 11, and the flat cable 11 is sandwiched between this and the holding part 3. is firmly fixed. Note that since the holding portion 3 is formed to have a substantially trapezoidal cross section so as to have a large coefficient of friction, the flat cable 11 can be held in a good state. However, this may also have a substantially U-shaped cross section as shown in FIG. 8, a substantially saw-blade cross section as shown in FIG. 9, or the like.

In this way, in this example, both the round cord 10 and the flat cable 11 can be held in a good state.

In this example, the tightening tool 4 has a structure as shown in FIG.
In order to improve the holding state of 0, a recess 5c is provided on the fastener body 5 side as shown in FIG. 5, or a tongue piece 5b is provided on the fastener main body 5 as shown in FIG. It is within the technical scope of the present invention to provide two cords and create a configuration that can hold two round cords 10.

(Effect of the invention) That is, the present invention includes a substantially box-shaped fastener main body, a mounting piece having mounting holes provided at both left and right ends of the fastener main body, and an opening formed in the bottom surface of the fastener main body. By constructing the cord tightening device from the tongue piece extending from the end of the opening, the cord tightening device can be used for both round cords and flat cables. It has the excellent feature of being able to provide

Therefore, unlike in the past, there is no need to use dedicated connectors for flat cables and round cords, resulting in lower costs and
There are many things that contribute to improving ease of assembly.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an exploded perspective view showing the overall structure of the connector, and FIG.
The figure is a perspective view showing the tightener, Figure 3 is a front view showing a round cord being tightened by the tightener, and Figure 4 is a front view showing a flat cable being tightened by the tightener. , 5 and 6 are front views showing other embodiments of the fastener, FIG. 7 is a sectional view taken along line A-A showing the cross-sectional shape of the holding part, and FIGS. 8 and 9 are the holding parts. FIG. 10 is an explanatory diagram showing a state in which a round cord is held. 4... Fastener, 5... Fastener main body, 5
a...opening, 5b...tongue piece, 6...attachment piece.

Claims (1)

[Scope of utility model registration request] This is a cord tightening tool that tightens the covering part of the cord to secure the cord when connecting it to general equipment, etc., including connectors. The fastener is comprised of a mounting piece having mounting holes provided at both ends, an opening formed in the bottom surface of the fastener body, and a tongue piece extending from the end of the opening. Features a cord fastener.