JPH07231539A - Flexible flat cable fixing device - Google Patents

Abstract

PURPOSE:To provide a flexible flat cable(FFC) fixing device for securing an FFC easily and positively while dealing with the number of FFCs to be used. CONSTITUTION:A clip 9 to be mounted on a fixing panel P is provided in the center at the base part 6 of a fixing device 4 having C-shaped cross-section made of a flexible material while directing outward. A clamp part 5 comprises a pair of clamping parts 7, 7 provided at the opposite ends of the base part 6 while directing inward at an interval D shorter than the width H of an FFC 1, hooks 8, 8 provided at the inner ends of both clamping parts 7, 7, and the curved base part 6. Since the clamping part 7 of the fixing device 4 and the FFC 1 can be engaged each other with sufficient mutual frictional force, workability and reliability can be enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting device for fixing a flexible flat cable (hereinafter referred to as "FFC") in which a plurality of electric wires or conductive members are converged in a flat shape to a wall such as an automobile.

[0002]

2. Description of the Related Art Conventionally, various types of FFC mounting devices have been known. As shown in FIG. 8, the mounting device 56 as the first conventional example is provided with respect to one side surface of the FFC 51 in which a plurality of juxtaposed electric wires 52 are flatly converged by a synthetic resin layer 53 provided on the front and back sides. , Plate 54
The clip 55 is projectingly provided on the FFC 51 and is integrally attached to the FFC 51 by a tape winding 57. A plurality of the mounting devices 56 having the above-described configuration are provided at appropriate positions in the longitudinal direction of the FFC 51, and the clips 55 are pushed into and fitted into the mounting holes provided in the mounting panel in the automobile or the like to mount the FFC 51. Mounted on the panel.

As shown in FIG. 9, a mounting device 64 as a second conventional example is disclosed in Japanese Utility Model Laid-Open No. 63-2652. The FFC 61 is flatly bundled by a heat-fusible synthetic resin layer 63 such as vinyl chloride provided with a plurality of parallel covered electric wires 62 on the front and back. The mounting device 64 is, for example, a polyacetal or 6
It is composed of a plate-shaped mounting base portion 66 with a clip 65 formed of a synthetic resin material having a relatively high strength such as nylon, and a plate-shaped surrounding portion 67 formed of a vinyl chloride material, for example. With respect to the plate-shaped surrounding portion 67 located on the back surface side of the FFC 61, the plate-shaped mounting base portion 66 is mutually assembled from the front surface side through the fitting convex portion 66a and the fitting concave portion 67a.

The mounting device 64 having the above-described structure is an FFC6.
After being combined in an appropriate number in the longitudinal direction of 1, the plate-shaped surrounding portion 67 is subjected to heat treatment, so that the FFC abutted on the plate-shaped surrounding portion 67.
The synthetic resin layer 63 of 61 is integrally fused with the vinyl chloride material and fixed. Therefore, the FFC 61 is attached to the mounting panel by pushing and fitting the grip 65 into the mounting hole provided in the mounting panel in the automobile or the like.

[0005]

However, in the mounting device 56 shown in the first conventional example, the fixing force of the plate-like body 54 becomes weak due to the deterioration of the tape winding 57 over time. Therefore,
There is a problem that the FFC 51 moves with respect to the mounting panel due to vibrations of the automobile or the like, or abnormal noise is generated due to rattling, resulting in poor reliability.

Further, in the mounting device 64 shown in the second conventional example, the plate-shaped surrounding portion 67 made of vinyl chloride material and the FF
Since the contact surface of C61 with the synthetic resin layer 63 is heat-fused, the problem that the FFC as in the first conventional example moves with respect to the mounting panel is eliminated. However, there is a problem in that cost is increased because a heating device for heating and fusion and man-hours are required.

Further, after heating and fusing, since the relative position between the FFC 61 and the mounting device 64 is fixed, it becomes impossible to adjust the position on the site and there is a problem that workability is deteriorated. Furthermore, when two FFCs 61 are stacked and used, the size of the fitting convex portion 66a of the plate-shaped mounting base 66 and the plate-shaped surrounding portion 6 are used.
Since it is necessary to change the size of the fitting recess of No. 7, it must be newly manufactured. Therefore, there is a problem that the versatility is poor.

The object of the present invention was made in view of the above-mentioned problems of the prior art. The object of the present invention is to securely and easily fix an FFC to a mounting device, and to provide versatility applicable to the number of plates used in the FFC. An object of the present invention is to provide a mounting device for FFC provided.

[0009]

The above object of the present invention is to provide an FFC mounting device for mounting an FFC in which a plurality of conductive members are arranged in parallel to each other and are flatly focused with a flexible material on a wall. A clip for attaching to the wall is provided at the center of the base of the U-shaped clamp part made of a material, and a gap between a pair of inwardly-directed holding parts at both ends of the base is smaller than the width of the FFC. This can be achieved by providing a hooking claw that is set and that is provided at the inner ends of the both gripping portions toward the mating gripping portions.

Further, the above-mentioned object can be achieved by the above-mentioned base portion being curved outward in a concave shape. Further, the above-mentioned object can be achieved by providing protrusions on both ends of the base toward the outside. Furthermore, the above object can be achieved by providing a plurality of grooves on the inner surface and the outer surface of the base. Further, the above object can be achieved by providing the hooking claw in an acute angle with respect to the holding portion. Further, the above object can be achieved by providing a notch for engaging the mounting device at both ends of the FFC, and setting a width between the notches bottoms to be larger than an interval of the holding portion.

[0011]

[Operation] In the FFC mounting device of the present invention, the FF
When C is sandwiched by both sandwiching parts of the attachment device, the width of the FFC is set to be larger than the interval between the sandwiching parts, so the FFC
Will be clamped by the mounting device in a bent state. That is, the FFC is hooked on the hooking claws, and the elastic action of the FFC that pushes and spreads both the sandwiching parts works to bend the base part in an outward concave shape. When the attachment device is attached to the wall by the clip in this state, the base portion curved in the outward concave shape is flattened by the wall, and thus the distance between the two expanded sandwiching portions tends to return to the original state. Therefore, the FFC is fixed to the wall in a state of being curved inwardly concavely.

Therefore, a frictional force acts due to the elastic force of the FFC to return to the original flat plate shape and the urging force of the clamping portions to return to the space D in the free state, so that the FFC is attached to the mounting device. On the other hand, there is no displacement or backlash. Further, the frictional force does not deteriorate with age. Further, if it is necessary to adjust the position of the FFC with respect to the mounting device at the assembly site, the relative position with respect to the FFC can be easily displaced by removing the grip from the wall.

Further, even if the number of FFCs mounted is slightly changed, the FFCs can be mounted simply by changing the bending amounts of the FFC and both holding portions, and it is not necessary to newly prepare a mounting device of another size. If it is necessary to adjust the biasing force due to the amount of bending, it can be easily adjusted by making a pair of cuts in the width direction of the FFC. Further, if the base portion is curved in the outward concave shape in advance, since the both holding portions are expanded toward the inner side, the FFC can be more easily attached to the attachment device.

Further, if projections are provided on both ends of the base toward the outside, the base is FFC when the clip is pushed into the wall.
Since the FFC is bent inward together with it, the FFC is strongly pressed against both holding parts and can be easily mounted between both holding parts. Furthermore, if the hooking claw is provided at an acute angle with respect to the sandwiching part,
After all, the FFC can be easily mounted between the sandwiching parts. If the inner surface and the outer surface of the base are provided with a plurality of grooves, the base can be bent easily.

[0015]

EXAMPLES The FFC mounting device of the present invention will be described in detail below with reference to examples. 1 is a perspective view showing an FFC mounting apparatus according to a first embodiment of the present invention, FIG. 2 is an explanatory view of the operation in FIG. 1, and FIG. 3 is an FFC according to a second embodiment of the present invention.
4 is a perspective view showing an FFC mounting device according to a third embodiment of the present invention, and FIG. 5 is a perspective view showing an FFC mounting device according to a fourth embodiment of the present invention. FIG. 6 is a perspective view showing an FFC mounting apparatus according to a fifth embodiment of the present invention, and FIG. 7 is a partial perspective view of an FFC applied to the mounting apparatus of the present invention.

As shown in FIG. 1, the FF according to the first embodiment.
The FFC 1 to which the C mounting device 4 is applied has a plurality of conductive members 2 arranged in parallel and is focused in a flat shape with a width H by a flexible material layer 3 formed of a synthetic resin such as vinyl chloride. It is configured.

The attachment device 4 is made of a flexible synthetic resin such as polyacetal or 6 nylon.
The clamp portion 5 of the attachment device 4 includes a strip-plate-shaped base portion 6 which is curved in a concave shape toward the outside in advance, and a pair of plate-shaped holding portions 7 provided at both ends of the base portion 6 toward the inside. 7 and
It is composed of a hooking claw 8 provided at the inner ends of the both holding portions 7, 7 so as to face the other holding portion.

The distance D between the two sandwiching portions 7, 7 is equal to the FF.
It is set smaller than the width H of C1. Further, at the center of the outer surface of the base portion 6, a clip 9 for mounting the mounting device 4 on a mounting panel P such as in an automobile is provided facing outward. The clip 9 is provided with a bending slit 9a at the center and a locking claw 9b at the tip.

As shown in FIG. 2, when the mounting device 4 is fitted into the FFC 1 at an appropriate position, since the width H of the FFC 1 is larger than the distance D between the pair of holding portions 7, both holding portions 7, 7 are expanded. At the same time, the bending of the base 6 is further strengthened as shown in FIG. 2 (a). In this state, by pushing the central portion of the FFC 1 to push the clip 9 into the mounting hole of the mounting panel P to lock the locking claw 9b on the wall surface,
The curved base portion 6 is pressed against the mounting panel P to be linear. Then, the space at the inner ends of the pair of sandwiching portions 7, 7 is narrowed, so that the FFC 1 is hooked on the hooking claws 8 at both ends as shown in FIG. It will be fixed.

Therefore, due to the elastic force of the FFC 1 to return to a straight line and the biasing force of the pair of clamping portions 7, 7 of the clamp portion 5 to further narrow, a strong frictional force acts on the contact portion between the two. become. Therefore, the FFC 1 is firmly held without being displaced with respect to the mounting device 4 or rattling. Further, the above-mentioned frictional force does not cause deterioration over time unlike tape winding, so that reliability is also improved. Further, when it is desired to adjust the position of the FFC 1 with respect to the mounting device 4 at the assembly site, the position can be easily adjusted by removing the clip 9 from the mounting panel P, so that workability is significantly improved.

Further, as shown in FIG. 2 (c), even if the number of FFCs 1 mounted on the mounting device 4 changes a little, the FF
It can be mounted simply by changing the bending amounts of C1 and the sandwiching portion 7, and is excellent in versatility.

Next, as shown in FIG. 3, the FFC mounting device 11 in the second embodiment differs from the mounting device 4 in the first embodiment in that the base 12 is linear and the base 1 is
That is, the protrusions 13 are provided on both ends of the outer surface 2. Other parts are exactly the same as the mounting device 4,
Description is omitted by assigning the same reference numerals to FIG. 3.

In the mounting device 11 having the above structure, the FF
When C1 is fitted, the distance between the pair of holding portions 7 and 7 is expanded, and the base portion 12 is slightly curved outward. In this state, when the center portion of the FFC 1 is pushed to push the clip 9 into the mounting hole of the mounting panel P to lock the locking claw 9b on the wall surface, the projection 13 is also brought into contact with the wall surface, so that the base portion 12 is inevitable. Is curved inwardly. Then, the space between the sandwiching portions 7, 7 is reduced.

On the other hand, since the FFC1 curved inwardly concavely is also acted by the elastic force of returning to the original flat state, a strong frictional force acts on the contact points of the FFC1 and the FFC1.
It is firmly fixed to No. 1 and does not cause displacement or backlash. Further, since the frictional force does not deteriorate over time, reliability is improved, and since the base portion 12 in the unloaded state is linear, it can be molded with a simple mold structure. The other effects are the same as those of the first embodiment, and the description thereof will be omitted.

Next, as shown in FIG. 4, the FFC mounting device 18 according to the third embodiment is provided with a plurality of grooves 16 on the outer surface of the base 17 near both ends thereof. Therefore, the description of the other same parts will be omitted by giving the same reference numerals. Since the groove 16 is provided, the base portion 17
Is easy to bend to the outer concave shape. Therefore, when the FFC is fitted into the mounting device 18, the base portion 17 is easily bent, so that the mounting is facilitated and the workability is improved. This mounting device 18
When the FFC is fitted in, the base portion 17 is bent outwardly by the elastic force of the FFC. Then, when the attachment device 18 is attached to the attachment panel, the base portion 17 returns to the original flat state, the distance between the pair of holding portions 7 and 7 returns to the original state, and the FFC is bent to the attachment panel. It will be fixed.

Next, as shown in FIG. 5, the FFC mounting device 21 in the fourth embodiment is a combination of the second and third embodiments, and both ends of the base 12 of the mounting device 11 in FIG. The groove 16 of FIG. 4 is provided in the vicinity.

In the above structure, the FFC is the attachment device 2.
After being fitted in 1, the clip 9 is pushed into the mounting hole of the mounting panel by pushing the central portion of the FFC to lock the locking claw on the wall surface. At this time, since the base portion 17 is largely bent inward at the groove 16, the pair of holding portions 7,
The interval of 7 tends to become narrower. Therefore, the action of the protrusion 13 is further enhanced, so that the FFC is more firmly fixed to the mounting device 21, and the reliability is further improved. Moreover, since the groove 16 is provided in the base portion 17,
When the FFC is fitted into the mounting device 21, the base 17 is easily bent, so that the mounting becomes easy and the workability is improved.

Next, as shown in FIG. 6, the FFC mounting device 26 in the fifth embodiment differs from the mounting device 4 in the first embodiment in that the hooking claw 27 has an acute angle with respect to the holding portion 7. And the base 28 is linear. Since the other parts are the same as those in the first embodiment, the description thereof will be omitted by giving the same reference numerals.

Since the hooking claw 27 is provided at an acute angle with respect to the holding portion 7, the FFC can be easily fitted into the mounting device 26, and the workability is further improved. When the FFC is fitted in the attachment device 26, the base portion 28 is bent outwardly in a concave shape by the tension force of the FFC, so that the same operation and effect as in the first embodiment can be obtained. The acute-angled hooking claw 27 can be applied not only to the fifth embodiment but also to the above-described first to fourth embodiments, and the work of fitting the FFC into the mounting device is facilitated and the workability is improved. Can be improved.

Next, as shown in FIG. 7, the width H of the FFC 32 is
A pair of notches 31 and 31 for engaging with the FFC mounting device described above are provided at both ends of the. The width h between the bases of the pair of notches 31 and 31 is set to be larger than the distance D between the pair of holding portions 7 and 7.

With the above structure, for example, when the mounting device 4 of the first embodiment is assembled, the width h is smaller than both end widths H of the FFC 32, so that the FFC 32 can be easily fitted into the mounting device 4. The notches 31 and 31 are engaged with each other by the pair of holding portions 7 and 7 of the mounting device 4. Therefore, the mutual positional relationship between the FFC 32 and the mounting device 4 is such that even if the frictional force between the sandwiching portions 7 and 7 and the bottoms of the cuts 31 and 31 is weak, the sides of the cuts 31 and 31 serve as stoppers. There is no displacement.

Further, as shown in FIG. 2C, the FFC
When the expansion force for enlarging the holding portion 7 is too strong by fitting two pieces 32, the width h can be adjusted appropriately by adjusting the width h.

The present invention is not limited to the above-mentioned first to fifth embodiments, but by making appropriate changes,
It can also be implemented in other aspects. For example, in the present embodiment, the clip 9 is fixed to the mounting hole of the mounting panel P by one piece, but it can be tightened from the opposite side of the mounting panel P by another piece. Further, in the third embodiment shown in FIG. 4, the groove 16 is provided on the outer surface of the base portion 17, but it may be provided on the inner surface.

[0034]

As described above, according to the FFC mounting device of the present invention, the distance between the pair of inwardly-directed holding portions at both ends of the base portion is set smaller than the width of the FFC, and the inner ends of both holding portions are provided. Equipped with a hook. When the mounting device is mounted on the mounting panel, the elastic force acts in a direction in which the distance between the sandwiching portions that are curved outwardly is narrowed by the expanding force of the FFC. Therefore, a large frictional force acts on the contact portion between the mounting device and the FFC.

Therefore, the FFC is not displaced with respect to the mounting device, and the frictional force hardly deteriorates with time, so that the reliability can be improved. In addition, when it is desired to adjust the position of the FFC with respect to the attachment device, it can be easily performed by removing the clip from the attachment panel, so that workability can be improved.

Further, even if the number of FFCs mounted on the mounting device changes to some extent, the FFCs are reliably held by the frictional force generated by the mutual flexibility, so that versatility can be improved. If a proper number of pairs of notches for engaging the mounting positions are provided at both ends of the width H of the FFC, the positional relationship between them will not be held, and the reliability will be further improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of an FFC mounting device of the present invention.

2A and 2B are diagrams for explaining the operation in FIG. 1, where FIG. 2A shows a state before being mounted on a mounting panel, FIG. 2B shows a state mounted on a mounting panel, and FIG. FF
The state where C is assembled and attached to the mounting panel is shown.

FIG. 3 is an operation explanatory view showing a second embodiment of the FFC mounting device of the present invention.

FIG. 4 is a perspective view showing a third embodiment of the FFC mounting device of the present invention.

FIG. 5 is a perspective view showing a fourth embodiment of the FFC mounting device of the present invention.

FIG. 6 is a perspective view showing a fifth embodiment of the FFC mounting device of the present invention.

FIG. 7 is an FFC applied to the FFC mounting device of the present invention.
FIG.

FIG. 8 is a perspective view of an FFC mounting device showing a first conventional example.

FIG. 9 is a perspective view of an FFC mounting device showing a second conventional example.

[Explanation of symbols]

1,32 FFC (flexible flat cable) 2 conductive member 3 flexible material layer 4 FFC mounting device (first embodiment) 6, 12, 17, 28 base portion 7 clamping portion 8, 27 hooking claw 9 clip 11 for FFC Mounting device (second embodiment) 13 Protrusion 16 Groove 18 FFC mounting device (third embodiment) 21 FFC mounting device (fourth embodiment) 26 FFC mounting device (fifth embodiment) 31 Notch D clamping portion Spacing H FFC width dimension h FFC notch width dimension

Claims (6)

[Claims] 1. A mounting device for mounting on a wall a flexible flat cable in which a plurality of conductive members are arranged in parallel and are flatly converged by a flexible material layer, wherein a clamp portion made of a flexible material has a U-shaped cross section. A clip for attaching to the wall is provided at the center of the base of the base toward the outside, and the distance between the pair of holding parts facing inward at both ends of the base is set to be smaller than the width of the flexible flat cable, and inside the both holding parts. An attachment device for a flexible flat cable, characterized in that a hook is provided at an end thereof. 2. The mounting device for a flexible flat cable according to claim 1, wherein the base portion is curved outward in a concave shape. 3. The mounting device for a flexible flat cable according to claim 1, wherein projections are provided on both ends of the base toward the outside. 4. The mounting device for a flexible flat cable according to claim 1, wherein a plurality of grooves are provided on an inner surface or an outer surface of the base portion. 5. The mounting device for a flexible flat cable according to claim 1, wherein the hooking claw is provided at an acute angle with respect to the holding portion. 6. An appropriate number of pairs of cuts for engaging the mounting device are provided at both ends of the flexible flat cable 1, and a width between bases of the cuts is set to be larger than an interval between the sandwiching portions. Attachment device for flexible flat cable according to 1.