JPH0731043A - Protector for flat cable - Google Patents

Abstract

PURPOSE:To provide a protector for a flat cable which allows easy bending of the flat cable and in which the performance can be ensured without collapsing the bent part even if the bending angle is not accurate or force is applied forcibly to a bent flat cable. CONSTITUTION:The protector 1 for a flat cable comprises a first protective plate 2 made of a triangular dielectric plate for mounting a flat cable, a second foldable protective plate 3 provided on one side of the first protective plate 2 through a first hinge part 5 and superposed on the flat cable mounted on the first protective plate 2, and a third foldable protective plate 4 provided on the other side of the first protective plate 2 through a second hinge part 9 and folding the non-folded part of the cable clamped by the second protective plate 3 back to the second protective plate 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat cable protector for easily forming a folded portion of a flat cable and protecting the folded portion.

[0002]

2. Description of the Related Art A flat cable has a conductive circuit coated with a flexible sheet, and has recently been used for electrical wiring of automobiles and the like. This flat cable cannot be bent on the same plane, and it is common to fold and use the flat cable to bend and use a circuit.

However, when the flat cable is folded and used, there is a risk that the insulating sheet may be broken at the folded portion and electric leakage may occur. Therefore, in order to protect the folded portion in the related art, for example, a protective plate having an isosceles right triangle 2 Created for each sheet and connected to each other at the bottom side, align the folded line of the folded flat cable with the bottom side, and make the extended parts of the flat cable protrude from the two sides of the isosceles triangular protective plate respectively. Was there.

On the other hand, if wiring is performed in this state, if an external force is applied to the flat cable protruding, the folded portion may be displaced and may be strongly pinched by the protective plate, resulting in disconnection. The proposal by the gazette No. 21131 was made. This proposal is to provide two protective plates made of synthetic resin, each of which has a substantially triangular shape, and a hinge portion having a thin wall at a connecting portion of the protective plates, and to insert a folded portion of a flat cable into the hinge portion to protect the flat cable. Is. It has also been proposed to provide a bar-shaped guide bar on the hinge portion and to protect the folded-back portion by bending the guide bar with a gentle curvature.

[0005]

However, the flat cable must be bent in advance to sandwich the folded portion in the hinge portion, and a jig or the like must be used to bend the flat cable. There is a problem in terms of sex. If the flat cable is bent by hand, the curvature of the bending is not constant.If the bending is small, it causes deterioration of the electrical performance of the circuit itself due to temperature rise, etc. is there.

Further, in the case where the hinge portion is provided with the guide bar, the flat cable has to be inserted in the gap between the guide bar and the hinge portion, and there is a problem in workability, and the guide bar has only one root. When the number of poles of the flat cable is increased and the thickness of the conductor layer is excessively large, there is a problem that when the protective plate is closed, the hinge portion deteriorates due to a reaction force due to bending of the flat cable.

The present invention has been made in view of the above circumstances. An object of the present invention is to protect a flat cable in which the flat cable can be easily bent, and the accuracy of the bending angle and the performance of the flat cable can be secured. The idea is to propose a tool.

[0008]

In order to achieve the above object, the flat cable protector of the present invention comprises: (1) a first protective plate formed of a triangular insulating plate member on which the flat cable is placed; The first protection plate is provided on one side of the first protection plate so as to be bendable via a first hinge portion.
A second protection plate that is superposed on the flat cable placed on the protection plate, and a second protection plate on the other side of the first protection plate.
Is provided so as to be freely bendable via the hinge part of the second
And a third protection plate for folding back the unfolded portion of the flat cable sandwiched between the protection plates on the second protection plate, and the flat cable includes the first, second and third protection plates. It is characterized in that it is clamped and fixed by.

(2) A first hook portion which is formed of an insulating plate material of an isosceles right triangle on which a flat cable is placed and which is provided in parallel with one of two adjacent sides sandwiching the right angle at one of both base angles is provided. A first protection plate, and the first protection plate of the first protection plate.
Is provided on one side corresponding to the hook portion so as to be bendable via a first hinge portion, is superposed on the flat cable placed on the first protection plate, and is locked to the first hook portion. A second protection plate having an isosceles right triangle and a flat cable sandwiched between the second protection plate and the bottom surface of the first protection plate, the flat cable being bendably provided via a second hinge portion. The protruding portion is folded back onto the second protective plate, and the third protective plate is provided with the second hook portion that engages with the second protective plate. The first, second and third protective plates are provided. It is characterized in that a flat cable is sandwiched and folded back and fixed by a protective plate.

[0010]

[Operation] In the flat cable protector of the present invention having the above-mentioned configuration, the flat cable is placed along the first hinge portion connecting the first protection plate and the second protection plate,
When the second protection plate is superposed on the flat cable and the third protection plate is bent to be superposed on the second protection plate, the flat cable is folded back along one side of the second protection plate. It is superposed on the superposed second protective plate. Since the third protective plate suppresses the portion, the flat cable is folded back with a certain radius. Finally, by fixing the outer surfaces of the first protection plate and the third protection plate at the same time with a fixture (for example, a clip-shaped fixture), an external force is applied to the flat cable protruding outward of the holder. Even if added, the bending position is not displaced and the bending R is also kept constant. In order to protect the flat cable by bending it in the right-angled direction, a right-angled isosceles triangular protective plate is used to protect the flat cable with high accuracy and reliability.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. In FIG. 1, a flat cable protector 1 includes a first protection plate 2, a second protection plate 3, and
It is formed of three insulating plate materials including the third protective plate 4. Each of these protection plates is a triangular plate member having the same size, the first protection plate 2 is arranged in the center, and one side is provided with the second protection part via the first hinge part 5. The plate 3 is connected. The second protection plate 3 is provided with the first hinge portion 5
The first protective plate 2 is bent by the above so as to be completely overlapped. The apex angle corresponding to the side on which the first hinge portion 5 of the second protection plate 3 is provided is partially cut by a line parallel to the bottom side, and the locking portion 6 is provided. The engaging portion 6 is formed so that the center of the end face is convex, and the first hook portion 7 engaged with the engaging portion 6 is formed.
Is provided on the first protection plate 2 side. The first hook portion 7 is provided on the apex angle of the first protection plate 2 corresponding to the first hinge portion 5, and is erected on the upper surface of the first protection plate 2 and has a claw at the upper end thereof. The portion 8 is provided so as to project, and the locking portion 6 is locked when the second protective plate 3 is bent and superposed on the first protective plate 2. The lock is opened only when the tip of the hook portion is pressed in the opening direction when the second protective plate 3 is removed.

The second side of the first protective plate 2 adjacent to the side where the first hinge portion 5 is provided has a second hinge portion 9 and a third side.
Protective plate 4 is provided. The second hinge portion 9 is formed of a thin portion and has a width larger than that of the first hinge portion 5, and the connecting portion between the first protective plate 2 and the third protective plate 4 is on the upper surface side of each protective plate. A curved surface is formed with an R surface. Then, as shown in FIG. 2, the R surface is such that when the second protective plate 3 is superposed on the first protective plate 2 and the third protective plate 4 is superposed on the upper surface thereof, the inner surface thereof is It is shaped like a ring that bulges out. The end face of the second protective plate 3 slightly protruding in the bulged surface is formed in a semicircular shape, and the folded portion of the flat cable described later is wrapped in an R shape in this surface. It is supposed to be.
At the connecting portion of the second hinge portion 9 with the first protection plate 2, the first hook portion 7 side is linearly formed, and the opposite surface is the first protection plate 2 and the third protection plate. It is formed so as to project in the extension direction of the outer peripheral surface of the plate 4 and to cover the end portion of the second protective plate 3.

On the upper surface of the third protection plate 4 in the open state, a second angle is provided on the outer peripheral end face having an apex angle corresponding to the second hinge portion 9.
The hook portion 10 is provided. This second hook portion 10
Is the same as the first hook portion 7, and has a claw portion 8 protruding from the upper end thereof, and the claw portion 8 is locked by a locking portion 11 provided on the outer peripheral end surface of the second protective plate 3 on the hinge side. It is configured to. The protrusion 12 provided on the upper surface of the third protection plate 4
Is for preventing the slippage between the second protection plate 3 and the third protection plate 4 by being inserted into the locking hole 13 provided in the second protection plate 3.

In the flat cable protector 1 constructed as described above, the first protection plate 2 and the second protection plate 3 are firstly arranged.
The second protective plate 3
When the third protection plate 4 is bent and overlapped with the second hinge part 9 interposed therebetween, the first hook part 7 of the first protection plate 2 becomes the second protection plate as shown in FIG. 3 is fixed, the second hook portion 10 of the third protection plate 4 is locked to the locking portion 11 of the second protection plate 3, and the protrusion 12 is inserted into the locking hole 13. Therefore, it is configured as one block and maintained without shifting.

As shown in FIG. 4, the flat cable protector 1 having the above-described structure is arranged along the first hinge portion 5 between the first protective plate 2 and the second protective plate 3. The flat cable 14 is placed, and as shown in FIG. 5, the second protection plate 3 is bent over the flat cable 14 and locked to the first hook portion 7. At this time, flat cable 14
A part of it is held by the second protection plate 3, and the unfolded part is placed on the third protection plate 4 and is extended to the back side.

Next, as shown in FIG. 6, the third protective plate 4
Is bent through the second hinge portion 9, the flat cable 14 placed on the third protection plate 4 is folded back along the R end surface of the second protection plate 3 and is moved leftward from the initial direction. It is folded back and placed on the second protective plate 3. In this state, the third protection plate 4 is overlapped and the second hook portion 10 is locked to the locking portion 13 of the second protection plate 3, so that the flat cable 14 is a flat cable for a flat cable with a constant R. It is protected and fixed to the protector 1.

The above-mentioned flat cable protector 1 has been described by providing the first protection plate 2 and the third protection plate 4 with hooks, respectively. After mounting the protector on the cable 14, the protector composed of three sheets can be fixed by a holder formed of, for example, another clip-shaped member. Further, among the protection plates attached to the flat cable 14, a panel mounting member is provided on the upper surface of the first protection plate 2 or the third protection plate 4 so that the flat cable is protected while the flat cable 14 is held. The tool 1 can be locked to a panel or the like.

The flat cable protector 1 described above is
As shown in FIG. 7, the shape of each protection plate is provided with a side AB orthogonal to the flat cable 14 on the insertion side of the flat cable 14, and a side AC perpendicular to the point A with respect to the side AB. When a right-angled isosceles triangle protection plate with AC = is formed and the second protection plate 3 is folded back using the hypotenuse BC as a guide, the flat cable 14 ′ folded back with respect to the flat cable 14 is a right angle. It will be folded back in the direction.

From this, it follows that AB⊥A with ∠A = ∠R
By providing two sides of C and defining ∠B with respect to this, the direction of the flat cable 14 ′ folded back with respect to the insertion direction of the flat cable 14 is set by 2∠B. Therefore, when it is desired to set the folding direction of the flat cable 14 to θ, the folding direction of the flat cable can be freely changed by forming the first, second and third protective plates by ∠B which is θ / 2. It is possible.

[0020]

As described above in detail, the first protective plate, the second protective plate, and the third protective plate of the same shape for sandwiching and protecting the flat cable are provided with the first hinge portion and the third hinge plate, respectively. The flat cable can be bent easily because it is integrally formed so as to be bendable via the two hinge portions and is folded back to protect the bent portion with one side of the second protection plate as a reference. The advantages are that the accuracy of the bending angle and the performance of the flat cable can be secured.

[Brief description of drawings]

FIG. 1 is a developed perspective view of a flat cable protector showing an embodiment of the present invention.

FIG. 2 is a partial side view of an overlapping portion of the flat cable protector of FIG. 1 that is bent.

FIG. 3 is a perspective view showing an assembled state of the flat cable protector of FIG.

4 is a perspective view showing a state in which a flat cable is placed on the flat cable protector of FIG. 1. FIG.

5 is a perspective view showing a state in which a second protection plate is folded and overlapped from the state of FIG.

FIG. 6 is a perspective view showing a state in which a third protection plate is bent and assembled from the state of FIG.

FIG. 7 is a plan view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Protective Equipment for Flat Cable 2 1st Protective Plate 3 2nd Protective Plate 4 3rd Protective Plate 5 1st Hinge Part 7 1st Hook Part 9 2nd Hinge Part 10 2nd Hook Part 14 Flat cable

Claims (2)

[Claims] 1. A first protective plate formed of a triangular insulating plate member on which a flat cable is placed, and a first hinge plate provided on one side of the first protective plate so as to be bendable via a first hinge portion. A second protective plate that is superposed on the flat cable placed on the first protective plate, and is provided on one side of the first protective plate so as to be bendable via a second hinge portion,
A third protection plate for folding back the unfolded portion of the flat cable sandwiched by the second protection plate onto the second protection plate is provided, and the flat cable is connected to the first, second and third flat plates. A flat cable protector characterized by being clamped and fixed by the protective plate of. 2. A first hook portion which is formed of an insulating plate material of an isosceles right triangle on which a flat cable is placed and which is provided parallel to one of two adjacent sides sandwiching the right angle at one of both base angles. A first protection plate and one side of the first protection plate corresponding to the first hook portion are provided so as to be bendable via a first hinge portion, and are placed on the first protection plate. A second protective plate of an isosceles right triangle that is superposed on the flat cable and is locked to the first hook portion;
Is provided at the bottom side of the protective plate via the second hinge portion so as to be bendable, and the protruding portion of the flat cable sandwiched by the second protective plate is folded back onto the second protective plate,
A third protection plate provided with a second hook portion that locks with the second protection plate, and the flat cable is clamped and folded back and fixed by the first, second and third protection plates. Protective equipment for flat cables.