JPH04171785A - Flexible printed board - Google Patents

Abstract

PURPOSE:To improve the efficiency of assembling work and of space utilization by providing positioning means for an electric element in the vicinity of a fixed part of a flexible printed board. CONSTITUTION:On a second part 2 facing parallely to a first part 1 of a flexible printed board fixed part to a structure of a body, etc., an electric-part fixing part 4 is provided for positioning an electrical element such as an LED 6, at an opposite location to a flexed part 3. The first part of the flexible board is fixed to the structure, and thereafter the second part 2 is bent substantially parallely to the first part 1, and a tip end of the LED 6 with its root substantially simply fixed to the structure is fitted into an opening 4a of the fixed part 4. Hereby, there can simultaneously be achieved the fixation of the flexible board and accurate positioning of the electric element.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a flexible printed board, and particularly to a flexible printed board having means for positioning electric elements.

[Prior Art] Conventionally, in order to hold and fix a discrete type electric element such as an LED, a fitting part is provided in a structural member and the electric element is fitted therein, or a part of the structure or member is fitted with the electric element. Methods such as fixing the element with adhesive have been used.

[Problems to be Solved by the Invention] However, when fitting a display element such as an LED to a structural member, it is necessary to take a long fitting length so that the tip of the element is placed in an accurate position.

As a result, it was difficult to incorporate the device and required a large space for installation. Furthermore, even when adhesively fixing to a certain part without providing a fitting part, it is necessary to accurately position the tip when displaying it externally, so it is necessary to position and fix the tip using a separate member.

On the other hand, when folding a flexible printed circuit board (hereinafter abbreviated as flexible) into the device, for example,
The other portions of the flexible sheet that are fixedly attached to the structural member are bent approximately parallel to the other portions, and a reaction force from the bending causes a force to return to the original state, so a means to suppress this is required. .

An object of the present invention is to provide a flexible cable having a structure that can simultaneously solve the problems faced by the prior art.

[Means for Solving the Problems] In the present invention, a means for positioning an electric element such as an LED is provided near the fixed part of the bent flexible cable, thereby increasing the efficiency of the assembly work and the efficiency of space utilization. It makes it possible to raise

[Example] Fig. 1 is a plan development view of a flexible cable according to this embodiment, and Fig. 2 is a perspective view showing a state where it is attached to the flexible structure.
FIG. 3 is a top view similarly showing the attached state. In Figures 1 to 3, 1 is the first part of the flexible cable fixed to a structure such as the main body, 2 is the second part facing parallel to the first part 1, and 3 is the second part. This is a bent portion that is bent at right angles to the second portion 2 and toward the first portion 1 to prevent one end of the second portion 2 from lifting up.

Reference numeral 4 denotes an electrical component fixing portion provided in the second portion 2 at a position opposite to the bending portion 3, and the fixing portion 4 has an opening 4a for positioning an electrical component for external display such as an LED. ing. As described above, 1 to 4 constitute the main constituent parts of the flexible cable of this embodiment.

5 is a mounting screw for attaching and fixing the fixing part 4 to the structure;
Reference numeral 6 denotes an LED, which is electrically connected to the circuit pattern on the flexible board by a lead wire (not shown), but is only approximately positioned at its base and is not fixed to the structure.

After fixing the first part 1 of the flexible cable of this embodiment having such a configuration to the structure, the second part 2 is attached to the first part 1.
The tip of an electric element such as an LED, whose only base is substantially fixed to the structure, is fitted into the opening 4a of the fixing part 4, which is a means for maintaining the bent state substantially parallel to the structure. By doing so, it is possible to simultaneously fix the flexible cable and accurately position the electric element.

FIG. 4 is a perspective view showing a second embodiment, in which the bending section 3 in the embodiment of FIG. The second portion 22 is fixed at several places, and the LED 28 is also fixed.

In addition, in FIG. 4, 21 is the above-mentioned first part, 2
5 is a fixing screw, 24a is an opening provided in the fixing part 24,
It is.

FIG. 5 is a perspective view showing a third embodiment.

In this embodiment, an island portion 31a is connected to the first portion 31, and an opening portion 31b is provided in the island portion 31a. 36 is an LED, which is electrically connected to the pattern on the flexible board by a lead wire (not shown), but is not held by the structure. Therefore, the second part 32 is the first part 3.
When the fixed portion 34 is bent substantially parallel to the structure 1 and fixed to the structure by tightening the screws 35, the LED 36 is positioned and held by the openings 31b and 34a.

In addition, 33 is the above-mentioned bending part.

[Effects of the Invention] As explained above, according to the flexible cable of the present invention, the positioning of electric elements such as LEDs, especially external display elements, can be easily performed by fixing the flexible cable in a substantially parallel folded state. This has the great effect of making it easier and more accurate.

[Brief explanation of the drawing]

Fig. 1 is a plan development view of the flexible cable according to the first embodiment of the present invention, Fig. 2 is a perspective view showing the state in which it is attached to the flexible structure of Fig. 1, and Fig. 3 is a structure of the flexible cable of Fig. 1. FIG. 4 is a perspective view of the flexible cable according to the second embodiment of the present invention attached to a structure, and FIG. 5 is a top view of the flexible cable according to the third embodiment of the present invention attached to a structure. FIG. 3 is a perspective view of the installed state. 1.21.31...First part of flexible cable 2.22.3
2...Second part of flexible cable 3.33...Bending part 4.24.34...Fixing part 4a, 24a, 34a...Opening part 5.25.3
5... Screws 6. 26, 36... LED and 4 others Fig. 3 Fig. 2 Fig. 4 Fig. 24a9te Fig. 5

Claims (1)

[Claims] 1. A first part that is attached and fixed to a structure, and a second part that is arranged to overlap on a plane with a certain gap between the first part and the first part. In a flexible printed circuit board in which the first part and the second part are connected in a U-shape, a part of the second part is attached and fixed to the structure or another structure. At the same time, a flexible printed circuit board characterized in that a positioning means for an electric element is provided in a part of the flexible printed circuit board near the fixed portion thereof.