JPH0338872Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a fixture for a flat cable used in electrical wiring, which is fixed to a mounting hole in a panel via a fixture.

(Prior Art) Conventionally, there is a flat cable mounting structure as disclosed in Japanese Utility Model Application No. 57-71382, and the flat cable fixing device 30 disclosed in this publication is the 10th flat cable mounting structure.
As shown in the figure, the central part of the flat cable holding surface 31 is made to protrude, and the mounting legs 32 having retaining parts 33 are made to protrude from both ends of the holding surface 31, and are integrally formed of synthetic resin. The mounting leg 32 is inserted and fixed into a mounting hole 35 provided in a flat cable mounting plate 34.

(Problem that the invention attempts to solve) However, this flat cable holding surface 3
In the mounting structure in which the flat cable W is fixed by pressing in accordance with 1, over time, the weight of the flat cable W or vibration causes slack between the fixing devices 30, which may interfere with parts and cause abnormal noise or short circuit accidents. In addition, since the fixing device 30 is configured to press and fix the entire width of the flat cable W, there are various problems due to differences in the number of electric wires W1, differences in the diameter of the electric wires W1, etc. Since it is necessary to prepare fixing devices of different widths, there is a problem that the number of parts increases and the number of man-hours required for parts management increases. There were problems such as incorrect installation due to incorrect installation.

(Means for Solving the Problems) The present invention was made to solve the above-mentioned conventional problems, and it is possible to securely attach the flat cable by partially pressing and fixing it without pressing the entire width of the flat cable. The purpose is to provide a fixing device for a flat cable that does not cause any slack in the flat cable. A fixing device for fixing a flat cable formed by forming a flat cable to a mounting hole in a panel, which is elastically displaceable and rises diagonally left and right upward from the lower end of a plate-shaped central shaft that can be inserted into the mounting hole. A locking member comprising a locking leg having a locking leg and a guide plate that can be inserted into the opening of the flat cable and the base plate through the neck at a predetermined interval on the upper side of the locking leg. It has a plate shape that overlaps with the guide plate, has an engagement hole approximately in the center that fits externally with the neck, and has a guide groove that opens from the engagement hole to the edge. The invention consists in a flat cable fixing device consisting of a fastening member.

(Embodiment) Next, an embodiment of the present invention will be explained according to the drawings.
This is a fixture for securing the flat cable W via a cable, and is made of, for example, synthetic resin, and is composed of two members: a locking member 4 and a fastening member 18. In this locking member 4, a rib 5a is provided at a corresponding edge of a substrate 5 formed in a substantially rectangular plate shape to protrude downward. Further, a prismatic neck 6 is suspended from the lower center surface of the board 5, and a rectangular guide plate 7 that can be inserted into the opening 23 of the flat cable W and guides the tightening member 18 is installed horizontally at the bottom of the neck 6. A pedestal 8 of a predetermined diameter that can be inserted into the mounting hole 2 is placed approximately in the center of the lower surface of the guide plate 7.
is formed, and this pedestal 8 has a 1/4 diagonal cutout as shown in the figure to form a relief part 9 of a locking leg 15, which will be described later.
is formed. Further, a locking leg portion 10 formed in a substantially anchor shape is vertically provided on the lower surface of the pedestal 8. That is, this locking leg 10 has a width that allows it to be inserted into the mounting hole 2 from the central lower surface of the pedestal 8, and has a substantially rectangular central shaft 11 with a predetermined thickness t.
is suspended, and a substantially warhead-shaped pressure receiving block 12 having a pressure receiving surface 13 projecting left and right in the figure is formed at its lower end. Further, locking legs 15 are provided on both sides of the connecting portion of the central shaft 11 with the pressure receiving block 12 in an upwardly oblique manner via thin-walled hinge portions 14.
are placed on top in a symmetrical shape. The locking leg 15 has a substantially semicylindrical cross-section with a flat inner surface and a substantially sharp tip.The locking leg 15 has a flat shoulder portion 16 at the upper end and fits into the relief portion 9 of the pedestal 8. A half-chipped neck portion 17 is formed, and both locking legs 1
5 is provided so as to be elastically displaceable toward the central shaft 11 via the hinge portion 14, and when the neck portion 17 is displaced toward the relief portion 9, the inner surface of the locking leg 15 moves toward the central shaft 11.
Displacement is possible up to a position close to .

Reference numeral 18 denotes a fastening member, and this fastening member 18 is slidably guided by the guide plate 7 of the locking member 4 in an overlapping manner and engaged with the neck portion 6 in a fitting manner, so that the fastening member 18 and the base plate 5 are engaged with each other. This fastening member 18 clamps and fixes the flat cable W between the guide plates 7 and 7.
is formed into a slightly larger approximately rectangular shape, and a rectangular engagement hole 19 that externally fits and engages with the neck portion 6 of the locking member 4 is provided through the approximately central portion of the rectangle. 19, a guide groove 2 which is curved as shown in the drawing and opens on one short side of the rectangle, and widens toward the end.
0, and locking protrusions 19b that engage with the neck 6 are formed on both sides of the opening 19a of the engagement hole 19. Note that the width of the opening 19a of the engagement hole 19 is smaller than the thickness t of the central shaft 11. Furthermore, ribs 21 are provided on the lower surfaces of the other three edges to protrude downward, and a recess 22 is formed on the lower surface side of the fastening member 18 to slidably fit with the guide plate 7. Fastening member 18 formed in this way
The guide groove 20 is provided so as to be elastically expandable.

In addition, the flat cable W has multiple electric wires W1.
are arranged in parallel and bonded using high-frequency welding or adhesive to form a substantially flat cable W. When forming this flat cable W, multiple electric wires W1 are arranged in parallel. When gluing them in the arranged state, a rod-shaped jig (not shown) is inserted into the fixing device 3 at the required location, and after gluing, the opening 23 is opened by pulling out this rod-shaped jig. The flat cable W is provided with an opening 23 in advance.

Next, the operation and effects of this embodiment configured as described above will be explained.

Now, the fixing device 3 of this example fixes a flat cable W, which is formed by integrally molding a plurality of electric wires W1 in a parallel plate shape and forming an opening 23 at a predetermined position, into the mounting hole 2 of the panel 1. The fixture 3 includes locking legs 1 that are elastically displaceable and stand up obliquely from the lower end of a plate-shaped central shaft 11 that can be inserted into the mounting hole 2 to the left and right.
5 and a guide plate 7 which can be inserted through the base plate 5 and the opening 23 of the flat cable W through the neck 6 is provided at a predetermined interval on the upper side of the locking leg 10. It has a plate shape that overlaps the locking member 4 and the guide plate 7, and has an engagement hole 19 approximately in the center that fits externally with the neck portion 6, and from the engagement hole 19. The fastening member 18 has a guide groove 20 opening at the edge. Therefore, in order to arrange the flat cable W,
First, the locking legs 10 of the locking member 4 and the guide plate 7 are inserted into the opening 23 to hold the flat cable W between the board 5 and the guide plate 7. Next, when the concave portion 22 of the fastening member 18 is fitted into the upper part of the guide plate 7 and the flat cable W is inserted under the flat cable W, the edge of the guide groove 20 provided in an expanded shape comes into contact with the neck portion 6. When the guide groove 20 is guided by the neck 6 and elastically expanded, the engagement protrusion 19b is elastically restored at the same time as it passes through the neck 6, and the engagement hole 19 is externally fitted into the neck 6. During the insertion process of the fastening member 18, the electric wire W1 between the board 5 and the fastening member 18 is elastically deformed and becomes a flat cable W as shown in FIGS. 7 and 8. A substrate 5 provided with ribs 5a and a fastening member 1
The fixing tool 3 is firmly fixed by being sandwiched between the fixing member 8 and the fixing member 8, and the part meandering in a substantially mountain shape and tightly sandwiched.

When the locking legs 10 of the fixture 3 are inserted into the mounting holes 2 of the panel 1, the left and right locking legs 15 are guided by the mounting holes 2 and are elastically displaced toward the central shaft 11, and the locking legs 15 are At the same time as the leg 15 passes through the mounting hole 2, it is elastically restored and its shoulder 16 is locked to the lower edge of the mounting hole 2, as shown in FIG. Abutted fixture 3
is elastically engaged with the attachment hole 2, and the flat cable W is arranged and fixed. Therefore, even if an external force such as vibration is applied to the flat cable W in this state,
The plurality of electric wires W1 on both sides of the opening 23 are pinched between the substrate 5 provided with the ribs 5a and the fastening member 18,
The part is meandered in an almost mountain shape and is tightly clamped, and together with the provision of the opening 23, it is possible to significantly reduce the slack of the cable W, and prevent it from interfering with other parts. Trouble can be resolved. Furthermore, by providing the opening 23 at a predetermined location of the flat cable W, the fixture 3 can be easily assembled, and the flat cable W can be easily assembled.
In addition, if the fixing device 3 of this example is used, many types of flat cables W can be installed with one type of fixing device regardless of the number of electric wires W1. 3, it is possible.

In the above embodiment, the fastening member 18 is provided in a rectangular plate shape, but the present invention is not limited to this. For example, as shown in FIG. may be provided so as to project slightly upward from the horizontal position, and in this case it is effective when the diameters of the electric wires W1 of the flat cable W are different. Moreover, although the recess 22 is provided on the lower surface of the fastening member 18 in the example, the recess 22 may be omitted. Further, in the above embodiment, the substrate 5, the guide plate 17, and the fastening member are exemplified as substantially rectangular plate members, but the present invention is not limited to this. For example, they may be circular members. may be formed into a cylindrical shape, and the engagement hole 19 of the fastening member 18 may be formed into a circular shape. Although the guide plate 7 is provided at the lower end of the neck 6 and the board 5 is provided at the upper side, the present invention is not limited to this. As shown in FIG. Alternatively, the substrate 5' may be provided on the lower side.

(Effects of the invention) The present invention is a fixture for fixing a flat cable, which is made by integrally molding multiple electric wires into a parallel plate shape and forming an opening at a predetermined position, to a mounting hole in a panel. and a locking leg having elastically displaceable locking legs that rises diagonally upward left and right from the lower end of the plate-shaped central shaft that can be inserted into the mounting hole, and a neck on the upper side of the locking leg. A locking member provided at a predetermined interval between the board and a guide plate that can be inserted into the opening of the flat cable, and a plate-shaped plate that overlaps with the guide plate, and has a neck portion approximately in the center thereof. By having a fastening member that has an engagement hole that fits externally and a guide groove that opens from the engagement hole to the edge, external forces such as vibrations are not applied to the flat cable. Also, the plurality of electric wires on both sides of the opening are pinched between the board and the fastening member, and that part is meandered in an approximately mountain shape and is tightly sandwiched.
Together with the provision of the opening, it is possible to significantly reduce the slack of the cable, and it is possible to eliminate troubles such as interference with other members. In addition, by providing an opening at a predetermined location of the flat cable, the fixing device can be easily assembled, and the installation of the flat cable can be done labor-savingly. By using this, it is possible to install many types of flat cables with one type of fixing device regardless of the number of electric wires, so it is an extremely practical idea as a fixing device for flat cables.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an exploded perspective view, FIG. 2 is a front view of the locking member, FIG. 3 is a side view, FIG. 4 is a bottom view, and FIG. 6 is a plan view of the fastening member, FIG. 6 is a cross-sectional view taken along the - line in FIG. 5, FIG. 7 is a front view of the flat cable attached to the panel with a fixing device, FIG. is a perspective view showing another aspect of the fastening member;
Figure 10 is a front view showing another aspect of the fixture;
The figure shows a conventional example. 1...Panel, 2...Mounting hole, 3...Fixing tool,
4... Locking member, 5, 5'... Board (head), 6...
... Neck, 7, 7'... Guide plate, 10... Locking leg, 11... Central shaft, 15... Locking leg, 18...
Fastening member, 19... engagement hole, 20... guide groove,
W...Flat cable, 23...Opening.

Claims (1)

[Scope of utility model registration request] A fixing device for fixing a flat cable, which is formed by integrally molding a plurality of electric wires into a parallel plate shape and forming an opening at a predetermined position, to a mounting hole in a panel, the plate being insertable into the mounting hole. A locking leg has elastically displaceable locking legs that stand up obliquely from the lower end of the central axis to the left and right upwards, and an opening for connecting the board and the flat cable to the upper side of the locking leg through the neck. a locking member provided with a guide plate that can be inserted into the neck part at a predetermined interval; and a plate-shaped engagement hole that overlaps with the guide plate and that fits externally into the neck part approximately in the center of the locking member. 1. A fastening member for a flat cable, comprising a fastening member having a guide groove opening from the engagement hole to the edge thereof.