JPH0258747B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a fitting used for connecting cables or taking them out onto the floor in undercarpet wiring.

<Conventional technology> When power cables and signal cables are laid on a carpet floor, a flat cable is installed between the floor and the carpet to maintain the aesthetics of the room, protect the cables, and ensure the safety of pedestrians. Techniques for laying cables, so-called undercarpet wiring, have been developed.

In this type of wiring technology, it is common practice to bend the cable, pull it upwards through a hole in the carpet, and connect it to the electrical equipment in the room via a suitable connection terminal.

<Problems to be Solved by the Invention> However, in the conventional structure where the cable is bent and pulled out onto the floor, external force is easily applied to the bent portion of the cable due to tension or bending.
It is unavoidable that the cable sheathing and the wires within the cable are likely to be damaged or deteriorated in that area. Not only in the case of damage, but also in the case of significant deterioration, the entire cable, including other normal parts without any damage or deterioration, will need to be replaced with a new one. Become. Therefore, such a structure is disadvantageous in terms of wiring maintenance.

In addition, once the cable exit point is determined, it cannot be easily moved, so generally the electrical equipment side is left fixed, and if it is unavoidable to move it, it is not necessary to move it under the floor. A new cable had to be laid separately on the floor. Therefore, this would significantly impair the original advantages of undercarpet wiring.

The first invention has been made in view of the above circumstances, and it is an object of the present invention to make it possible to easily take out a flat cable laid under a carpet onto the floor, connect the cable, branch it, etc. The purpose is to

In addition to the object of the first invention, the second invention also provides that the cable laid under the carpet may come off at the connection part or cause a connection failure due to an unexpected external force acting during or after the installation. The purpose is to prevent the product from getting worn out and to make it safe to use.

<Means for Solving the Problems> In order to achieve the above object, the first invention comprises a connection terminal block and a flat cover attached to the top of the connection terminal block, and a flat cover attached to the top of the connection terminal block. is provided with an installation plate narrowed between the floor surface and the carpet, a relay connection terminal is provided on the top surface of the connection terminal block, connection pins are protruded from both sides of the relay connection terminal, and the When the flat cover is attached to the connection terminal block, the top surface of the flat cover is at approximately the same height as the carpet surface, and a gap for cable insertion is formed between the connection terminal block and the flat cover. We have constructed a fitting for undercarpet wiring that is characterized by:

In addition to the configuration of the first invention, the second invention also provides a structure in which the upper surface of the connection terminal block is engaged with the female connection terminal of the cable connected to the connection pin. This fitting for undercarpet wiring has a structure in which a contact portion is provided to prevent the connection pin from coming off.

<Example> FIG. 1 shows an exploded state of a fitting for undercarpet wiring according to an example of the first invention, and FIG. 2 shows a longitudinal section thereof.
This fitting 1 consists of a connection terminal block 2 and a flat cover 3 made of plastic. The connection terminal block 2 is placed on the floor side. A flat cover 3 is placed on top of the connection terminal block 2. The connection terminal block 2 is formed into a rectangular flat plate shape. of the connection terminal block 2,
A pair of thin mounting plates 4, 4 are provided on each of the opposing outer sides. This installation plate 4, 4
Projections 5, 5 for externally fitting the flat cover 3 from above are formed, respectively. Relay connection terminal mounting portions 6 are provided in a protruding manner on the upper surface of the connection terminal block 2 and the protrusions 5, 5, respectively. An engagement recess 7 is formed in each mounting portion 6 . Respective engagement recesses 7 are provided between the connection terminal block 2 side and each attachment part 6 of one protrusion 5, and between the connection terminal block 2 side and each attachment part 6 of the other protrusion 5. Relay connection terminals 8, 8 (detailed structure is shown in FIG. 3) are engaged and fixed through them.

As shown in FIG. 3, the relay connection terminal 8 has a structure in which a large number of connecting pins 10 (five in this embodiment) are supported through a plastic body 9 in parallel at a predetermined pitch, as shown in FIG. It is something.
The relay connection terminal 8 has both ends of the body 9 inserted into the opposing engagement recesses 7, 7 from above. Then, by passing the connecting pin 13 through the small hole 11 formed at the end of the body 9 and the small hole 12 formed in the engagement recess 7 in this inserted state, the relay connecting terminal 8 is inserted into the connecting pin 13. It is supported in the center so that it can swing up and down. Note that the relay connection terminal 8 is fixed as necessary.

14 is a flat cable. A female connection terminal 15 is connected to the tip of the flat cable 14. Small holes 15a corresponding to the number of connection pins 10, their outer diameters, and the positions of the pins are formed at the tip of the female connection terminal 15. The connecting pin 10 of the relay connecting terminal 8 is inserted into the small hole 15a of the female connecting terminal 15 in the direction of the arrow. This connects the flat cable 14 and the relay connection terminal 8. A recess 16 (only one shown) is formed on the outer surface of each of the protrusions 5, 5 of the connection terminal block 2. Engaging pawls 17 are provided on the inner surfaces of both side walls of the flat cover 3 to fit elastically into the respective recesses 16.
(Only one side is shown with a portion of the flat cover 3 cut away in FIG. 1). By fitting the engagement claw 17 into the recess 16, the flat cover 3 is fixedly attached to the connection terminal block 2.

Both ends of the connection terminal block 2 are slightly recessed so that a gap for cable insertion is formed between the connection terminal block 2 and the flat cover 3 when the flat cover 3 is attached to the connection terminal block 2.
A wide notch 18 is formed in the flat cover 3.

Waterproof walls 19, 19 are provided protruding near the insertion portion of the flat cable 14 of the connection terminal block 2. These waterproof walls 19, 19 prevent condensed water on the underside of the carpet from reaching the connection terminal connection portion.

A cable outlet hole 20 is formed in the upper surface of the flat cover 3. A blind plate 21 is detachably attached to this extraction hole 20.

The undercarpet wiring fitting 1 of the present invention is constructed as described above. In this configuration, by sandwiching the mounting plates 4, 4 between the floor surface 22 and the carpet 23, the fitting 1 can be set at a desired position. In this case, the height of the flat cover 3 is set so that the upper surface of the flat cover 3 is approximately at the same height as the surface of the carpet 23. This setting ensures that the aesthetic appearance of the floor is not compromised and that it does not become an obstacle to walking.

FIGS. 4 and 5 are diagrams showing an example of how the pair of flat cables 14 and 14 are used, respectively. In Figure 4, the flat cover 3
The cable take-out hole 20 is closed with a blind plate 21. When pulling out the flat cable 14 onto the floor, the blind plate 21 is removed and the take-out hole 20 is opened as shown in FIG.

Although the embodiment shows a configuration in which two sets of relatively small width (5 wires) flat cables 14 are attached, a wide relay connection can be made by omitting the relay connection terminal attachment part 6 on the connection terminal block 2 side. By configuring the cable so that the terminal 8 can be attached, it is possible to accommodate a wide flat cable (for example, 8 wires or more).

FIG. 6 is a diagram showing an example of another usage pattern.
In this usage mode, the connecting pin 10 of one of the relay connecting terminals 8 is bent upward and its tip portion is taken out from the hole 20 formed in the flat cover 3. Then, the female connecting terminal 15 of the flat cable 14 is inserted into the connecting pin 10 taken out from the hole 20 to interconnect the flat cables. With this configuration, the flat cable 14 can be attached and detached more easily.

Next, an embodiment of the second invention will be described based on FIGS. 7 to 13.

FIG. 7 shows the disassembled state of the undercarpet wiring fitting according to the second invention, and the eighth
The figure shows its plane, and FIG. 9 shows its longitudinal section.

This fitting 1 is basically the first
This is similar to the embodiment of the invention, and consists of a plastic connection terminal block 2 placed on the floor, and a square flat cover 3 externally fitted onto the terminal block 2 from above. The connection terminal block 2 is formed in the shape of a substantially square flat plate, and the back surface thereof is an adhesive surface with a release paper, so that it can be stuck and fixed at a desired position on the floor surface. A pair of thin mounting plates 4, 4 are protruded from both the left and right sides of the connection terminal block 2 (in FIG. 8, the top and bottom of the paper are the left and right sides of the fitting 1). Projections 5a, 5a, 5b, 5b for attaching a flat cover are protrudingly provided on the front, rear, left and right upper surfaces of the connection terminal block 2 in the shape of a peripheral wall. The center portions of the front and rear protrusions 5a, 5a are slightly recessed inward, and the flat cover 3 is fitted with the protrusions 5a, 5b.
There is a gap A for cable insertion between the front and rear projections 5a and the peripheral wall of the flat cover 3 when the flat cover 3 is fitted on the outside.
is formed.

Relay connection terminal mounting portions 6a, 6b, and 6b are protrudingly provided at the center and two left and right locations on the upper surface of the connection terminal block 2, respectively. Engagement recesses 7a, 7b are formed opposite to each other in each of the attachment portions 6a, 6b, and are relayed between the center attachment portion 6a and the left and right attachment portions 6b, 6b via the respective engagement recesses 7a, 7b. The connection terminals 8, 8 are engaged and fixed.

The relay connection terminal 8 has a plastic body 9
A large number of connecting pins 10 are supported in parallel in the body 9, and a connecting pin 13 is supported through the outer end of the body 9. A relay connection terminal attachment portion 6 is provided at the bottom of the engagement recess 7b of the left and right attachment portion 6b.
A pin engagement recess 7c that opens toward the a side is formed to intersect with the engagement recess 7b in an inverted T shape. Then, as shown in FIG. 10, the relay connection terminal 8 is placed in an upright position with its outer end facing downward, and is engaged with the engagement recess 7b of the left and right mounting portions 6b, and the connecting pin located at the lower end thereof. 13 into the pin engagement recess 7c, and then rotate the relay connection terminal 8 toward the central attachment part 6a, so that the other end of the body 9 is inserted into the engagement recess 7 of the central attachment part 6a.
a from above. The relay connection terminal 8 assembled in this manner is supported by the connecting pin 13 that is supported by the recess 7c, and can freely rotate up and down.

A group of insulated core wires 14a are led out from the tip of the flat cable 14, twisted up,
A female connecting terminal 15 is connected to its tip.
The female connection terminal 15 is connected to the relay connection terminal 8 via a group of connection pins 10 . The lead-out length of the group of core wires 14a is set to a length sufficient to allow the female connecting terminal 15 to be freely inserted and removed from the relay connecting terminal 8 in an upright position, and the flat cable 14 is not forced to twist and deform. The female connecting terminal 15 can be attached to and detached from the relay connecting terminal 8 without any trouble.

Stepped contact portions 24 that protrude inward are formed at both ends of the inward surfaces of the left and right attachment portions 6b. This contact portion 24 connects to the female connecting terminal 15 connected to the relay connecting terminal 8 which is set in the rotated position.
the outer end of the cable side. This engagement prevents the female connection terminal 15 from coming off from the relay connection terminal 8.

A pair of left and right recesses 25 for cable passage are formed in the front and rear protrusions 5a, 5a of the connection terminal block 2, respectively. Near the end of the flat cable 14, a square bush-shaped sealing material 26 made of an elastic material such as rubber is fitted in advance. The sealing material 26 is configured to be positioned and inserted into the recess 25, and when inserted into the recess 25, the sealing material 26 is inserted into the recess 25.
The upper surface of the protrusion 6 is dimensioned to protrude slightly from the upper surface of the protrusion 5a. This sealing material 26 is compressed from above by the inner surface of the upper wall of the flat cover 3 when the flat cover 3 is fitted onto the connection terminal block 2, and compresses the flat cable 14 from the surrounding area to seal the waterproof seal inside the fitting. At the same time, the flat cable 14 itself is prevented from coming off.

An engaging claw 1 is provided at the lower end of the inner peripheral surface of the flat cover 3.
7 is formed, and the left and right protrusions 5 of the connection terminal block 2 are formed.
A recess 16 into which the engaging claw 17 is inserted is formed at the lower end of the outer surface of b, 5b, and the flat cover 3 is fixedly attached to the connection terminal block 2 by the engagement of both 16, 17.

A cable take-out hole 20 is formed on the top surface of the flat cover 3 and can be opened and closed by attaching and detaching the blind plate 21. As shown in FIG. , recess 2 through which the flat cable 14 does not pass.
A block-shaped sealing member 27 is attached to the cable 5, and a sealing member 28 is also attached to the upper part of the cable.

Another embodiment of the invention is shown in FIG.

In this case, the female connecting terminal 15 is configured to be asymmetrical in the left-right direction with respect to the relay connecting terminal 8, and the abutting portion 24 for preventing the connector from coming off is configured accordingly.
It has a large protrusion. According to this, when the female connecting terminal 15 is inserted into the relay connecting terminal 8 in the opposite left and right direction, the relay connecting terminal 8 cannot be installed correctly across the center and left and right attachment parts 6a and 6b, and it is easy to insert the wrong connection terminal. Recognizable.

<Effects of the Invention> As described above, by using the fitting according to the present invention, it is possible to easily connect flat cables to each other and draw them out onto the floor by connecting the cables to the relay connection terminal provided on the connection terminal block. It became. Furthermore, since the cables are connected using relay connection terminals, each operation of connecting and separating the cables can be performed easily and quickly without using any tools, improving workability. moreover,
Partial replacement of the cable is also easy, which is beneficial in terms of maintenance.

Furthermore, according to the fitting of the second invention,
The structure is such that the contact part provided on the connection terminal block engages and prevents the female connection terminal from coming off the relay connection terminal. The structure and operation are simple compared to the case where a fastening means is incorporated, and it is extremely effective when installed in such under-carpet wiring fittings, which are particularly required to be small and thin, and the basic effects of the first invention are as follows. In addition, reliability after connection can be made even higher.

[Brief explanation of the drawing]

FIGS. 1 to 6 show fittings for undercarpet wiring according to embodiments of the present invention.
The figure is an exploded perspective view of the fitting, Figure 2 is its vertical sectional view, Figure 3 is a perspective view of the relay connection terminal, and Figure 4 is a perspective view of the fitting.
FIGS. 5 and 6 are partially cutaway perspective views showing an example of each type of use. 7 to 13 show a fitting for undercarpet wiring according to an embodiment of the second invention, FIG. 7 is an exploded perspective view of the fitting, and FIG. 8 is an exploded perspective view of the fitting.
The figure is a plan view, Figure 9 is a longitudinal cross-sectional view, and Figure 10 is a longitudinal sectional view.
The figure is a longitudinal sectional front view showing the attachment part of the relay connection terminal, Fig. 11 is a partially cutaway front view showing the seal part of the flat cable, Fig. 12 is a longitudinal sectional side view showing an example of the usage pattern, and Fig. 13. FIG. 3 is a plan view of another embodiment in which the cable retaining structure is modified. 1 is a fitting, 2 is a connection terminal block, 3 is a flat cover, 4 is a mounting plate, 5 is a protrusion, 6 is a relay connection terminal attachment part, 7 is an engaging recess, 8 is a relay connection terminal, 9 is a body, 10 is a Connection pin, 1
1 and 12 are small holes, 13 is a connecting pin, 14 is a flat cable, 15 is a female connection terminal, 16 is a recess,
17 is an engaging claw, 18 is a notch, 19 is a waterproof wall,
20 is a cable outlet hole, 21 is a blind plate, 22 is a floor surface, 23 is a carpet, 24 is a contact portion, 25 is a recessed portion, and 26 is a sealing material.

Claims (1)

[Claims] 1. A device comprising a connection terminal block and a flat cover attached to the top of the connection terminal block, and a mounting plate sandwiched between a floor surface and a carpet provided on the side of the connection terminal block. , a relay connection terminal is provided on the top surface of the connection terminal block, connection pins are protruded from both sides of the relay connection terminal, and when the flat cover is attached to the connection terminal block, the top surface of the flat cover is A fitting for under-carpet wiring, characterized in that a gap is formed at approximately the same height as the carpet surface and for cable insertion between the connection terminal block and the flat cover. 2. The undercarpet wiring fitting according to claim 1, wherein the relay connection terminal is swingably supported around one end. 3. The undercarpet wiring fitting according to claim 1, wherein a waterproof wall is formed in the cable insertion portion of the connection terminal block. 4. The fitting for undercarpet wiring according to claim 1, wherein a cable outlet hole is formed on the upper surface of the flat cover and can be opened and closed by a blind plate. 5 comprising a connection terminal block and a flat cover attached to the top of the connection terminal block; a mounting plate sandwiched between the floor surface and the carpet is provided on the side of the connection terminal block; A relay connection terminal is provided on the top surface, connection pins are protruded from both sides of the relay connection terminal, and the top surface of the connection terminal block is provided with a connection pin that engages with a female connection terminal of a cable connected to the connection pin. a contact portion is provided to prevent the female connection terminal from being pulled out from the connection pin, and when the flat cover is attached to the connection terminal block, the top surface of the flat cover is approximately at the same height as the carpet surface. A fitting for undercarpet wiring, characterized in that a gap for cable insertion is formed between the connection terminal block and the flat cover. 6. The undercarpet wiring fitting according to claim 5, wherein the relay connection terminal is supported swingably around one end. 7. The undercarpet wiring fitting according to claim 5, wherein the flat cover has a cable outlet hole formed in the upper surface thereof that can be opened and closed by a blind plate.