JP2885156B2 - Mounting structure of the flexible printed circuit to the fixed member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a flexible printed circuit with a conductive pattern sandwiched between sheet materials to a fixed member, and more particularly, to a structure in which a flexible printed circuit is immovably mounted on a fixed member without bending. About what can be done.

[0002]

2. Description of the Related Art Conventionally, after a wire harness of a bundle of wires has been prepared for electrical connection between electrical devices, the wires are connected to each terminal of an electrical device component. Therefore, in recent years, a flexible printed circuit in which a conductive pattern as an electric wire is sandwiched between sheet materials is often used.

A flexible printed circuit of this kind is held by being fitted between inwardly bent hooks 2 formed on a molded protector 1 as shown in FIG. 8, for example. The panel is mounted on the vehicle by mounting means (for example, a clip) 3.

[0004]

However, in such a conventional flexible print circuit mounting structure, the distance between the hooks 2 of the protector 1 is limited to the length of the flexible print circuit (hereinafter, also simply referred to as FPC) 5. Since the FPC 5 is formed so as to substantially coincide with the width, the FPC 5 must be bent and then fitted between the hooks 2, which makes the mounting operation difficult.

The FPC 5 has hooks 2 on both sides in the width direction.
Therefore, there is a problem that the displacement in the extension direction cannot be limited, and there is a possibility that the component may be damaged due to interference with other components. In view of the above, the present invention is intended to improve the operability and reliability by facilitating the mounting work and restricting the movement in all directions by setting the mounting to engage with the opening formed in the FPC. Aim.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a flexible printed circuit in which a conductive pattern for electrically connecting electrical parts is sandwiched by a sheet material is attached to a fixing member of a flexible printed circuit. In the structure, the flexible print circuit is provided with at least two or more openings of the same or different shape for inserting the fixing means provided in the fixing member, and formed as the fixing means of the fixing member so that the opening of the flexible print circuit can be inserted. A hooking portion having a facing portion facing the edge of the opening moved in a plane direction facing a fixing surface for fixing the flexible print circuit or an extension surface of the fixing surface, and a state facing the facing portion of the hooking portion; Is formed at a position corresponding to a different opening of the flexible printed circuit of It is characterized in that provided, and the locking portion for locking the movement of the flexible printed circuit engaged.

According to the first aspect of the present invention, the hook of the fixing means can be inserted only by aligning the opening of the FPC, and when the FPC is moved in the plane direction, the facing portion of the hook is facing. As a result, the FPC is restrained from moving in a direction away from the fixing surface of the fixing member. In this state, the locking portion is located at a position corresponding to a different opening of the FPC, and the opening can be inserted and engaged with the opening as it is, and the movement of the FPC is restricted (locked). Therefore, the FPC can be mounted in a state where the movement is restricted only by inserting the locking portion into a different opening after inserting the locking portion into the different opening after inserting the opening into the hook portion and moving the FPC in the plane direction. The movement of the FPC can be similarly restricted even if all of the locking portions are used, but since all the locking portions need to be inserted into the openings, the mounting is easier than the hooking portion which is hooked only by adjusting the position. It is more preferable to combine with the hooking portion because the workability of the device is reduced.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, a hinge portion rotatably held in the direction of the fixing surface is provided outside the fixing surface of the fixing member. A locking portion is provided on the side facing the fixing surface of the hinge portion, and when the flexible print circuit is inserted into the hook portion and faces the opposite portion, the fixing member main body side corresponding to a different opening of the flexible print circuit. A locking hole in which the locking portion engages is formed at the site.

According to the second aspect of the present invention, when the hinge portion is rotated in the direction of the fixing surface of the fixing member, the locking portion is moved to the FP position.
C is inserted and engaged with the opening and the locking hole of
It is in a state of facing the fixed surface via the PC. Therefore, the portion of the FPC locked by the locking portion is attached while being sandwiched by the hinge portion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 to 5 are views showing a first embodiment of a mounting structure of a flexible printed circuit to a fixing member according to the present invention. This embodiment corresponds to the first aspect of the present invention.

In FIG. 1 and FIG. 2, reference numeral 11 denotes a flexible printed circuit (FPC). FPC 11 is formed by punching a copper plate or the like (conductive material) in accordance with a connection path for electrically connecting electric components of an electric device. The conductive pattern 12 formed by the above is sandwiched between films (sheet material) 13 to produce the conductive pattern. Reference numeral 21 denotes a protector (fixing member). Since the FPC 11 is made of a flexible film 13, the protector 21 has the fixing surface 21a for mounting the FPC 11 on a vehicle body panel (not shown) in a stable state. The mounting means 3 such as a clip (not shown in detail) can be inserted and fixed in a mounting hole opened in the panel (not shown in detail).

In the FPC 11, openings of a square hole 15 and a circular hole 16 are formed at the outer edges on both sides of the conductive pattern 12 by punching or the like, and a protector 21 is provided with a hook 22 which is bent in the same direction.
And the clip 23 are formed by integral molding.
23 is formed so as to correspond to the position. In addition, the manufacture of the protector 21 is simple and suitable for integral molding, but is not limited to this. The hook 22 and the clip 23 are formed after the protector body is manufactured by molding, cutting, or the like.
May be added later.

As shown in FIG. 3, the hook 22 of the protector 21 has an upper portion 22a having a substantially identical shape large enough to be inserted into the rectangular hole 15 of the FPC 11, and is opposed to an extension surface of the fixed surface 21a. I have. In addition, the clip 23 is attached to the hook 22 by FP.
When the square hole 15 of C11 is hooked, the hole is formed so as to coincide with the position of the circular hole 16, and as shown in FIG.
The circular hole 16 is formed to have a width smaller than the diameter of the circular hole 16, and a lower portion thereof is opposed to an extension surface of the fixed surface 21a. Reference numerals 24 and 25 in FIGS. 3 and 4 denote holes for forming a die for forming the upper portion 22a of the hook 22 and the lower surface of the bent portion 23a of the clip 23 during molding.

Next, the attachment of the FPC 11 to the protector 21 will be described together with the operation. First, the square hole 15 of the FPC 11 and the hook 22 of the protector 21 are aligned, and the hook 22 is inserted into the square hole 15 so that the FPC 11 contacts the fixing surface 21a. It is moved in a plane direction in which it enters under the upper portion 22a. At this time, FPC
Since the square hole 15 of 11 is formed so that the upper part 22a of the hook 22 can be inserted, the hook 22 can be inserted simply by aligning the same, and the upper part 22a of the hook 22 can be inserted simply by moving the FPC 11 in the plane direction. It can be in a state of facing and hooking. That is, the hook 22 constitutes a hook of the fixing means whose upper part 22a constitutes the facing part, and the movement of the FPC 11 in the direction away from the fixing surface 21a is restricted by the hook 21.

Next, in this state, the circular hole 16 of the FPC 11 and the clip 23 of the protector 21 are aligned with each other, and only by pressing down the FPC 11 in the protector 21 direction, the pair of flexures 23a are elastically deformed and pass. F is formed at the lower part of the bent portion 23a which has returned to the shape.
The PC 11 can be engaged with the edge of the circular hole 16 facing the PC 11. That is, the clip 23 constitutes a locking portion of the fixing means, and the movement of the FPC 11 in the direction away from the fixing surface 21a and the movement in the plane direction are also restricted.

Therefore, the FPC 11 is hooked to the square portion 15.
After aligning 22 and moving in the plane direction, clip
The protector 21 can be attached to the protector 21 in a state where the movement of the protector 21 is restricted by simply inserting the protector 23 into the circular hole 16. As described above, in the present embodiment, the FPC 11 can be engaged with the hook 22 and the clip 23 only by aligning the FPC 11 and the protector 21, and the movement of the fixing surface 21a in the separating direction and the plane direction can be restricted. Therefore, the FPC 11 can be easily attached to the protector 21 with the movement restricted.

Next, FIGS. 6 and 7 are views showing a second embodiment of the mounting structure of the flexible printed circuit to the fixing member according to the present invention. This embodiment corresponds to the second aspect of the present invention. In the present embodiment,
Since the configuration is substantially the same as that of the above-described embodiment, the same components are denoted by the same reference numerals and description thereof will be omitted. 6 and 7A, reference numeral 31 denotes a hinge plate (hinge portion). The hinge plate 31 is rotatable in the direction of the fixed surface 21a of the protector 21 via a thin portion 32 outside the fixed surface 21a. On the side facing the fixed surface 21a.
23 are formed. A circular hole of the FPC 11 hooked on the hook 22 is provided on the body side of the protector 21.
A locking hole 33 having the same shape is formed at a position corresponding to 16.

Therefore, the circular hole 16 of the FPC 11 is
33, that is, the FPC 11 is hooked on the hook 22
By simply turning the hinge plate 31 after hooking on
As shown in (b), the clip 23 is inserted into the circular hole 16 and the locking hole 33, and the lower part of the bent portion 23a is opposed to the back surface of the fixed surface 21a so as to be engaged with the protector 21.
The movement can be restricted while the PC 11 is sandwiched between the fixed surface 21a and the hinge plate 31.

As described above, in this embodiment, the circular hole 16
Since the FPC 11 is sandwiched by the hinge portion 31 in a state where the clip 23 is inserted through the clip 23, the movement of the FPC 11 can be locked by firmly fixing (locking) the clip 23 to the protector 21.
Further, even if the diameter of the circular hole 16 of the FPC 11 is larger than the bending portion 23a, it is possible to prevent the circular hole 16 from coming off.
11 can be mounted in a more secure state.

In the above embodiment, the hook having the upper portion bent in one direction has been described as an example of the hooking portion. However, the present invention is not limited to this. For example, when the FPC is moved like a mushroom type, etc. It suffices if there is a part that faces (faces). Further, the locking portion is not limited to the one having an arrow-shaped bending portion, but may be any shape such as a simple umbrella shape that can engage and lock the movement at that position.

[0021]

According to the first aspect of the present invention, the opening of the FPC and the hooking portion and the locking portion of the fixing member are formed so that their positions correspond to each other, and only by aligning the FPC. Some openings can be hooked on hooks,
After this, another opening can be engaged with the locking portion to restrict movement in the separation direction and the plane direction. Therefore, the FPC can be easily attached to the fixed member in a state where the movement is restricted.

According to the second aspect of the present invention, since the engaging portion engages with the opening of the FPC when the hinge portion faces the fixing surface, the FPC is attached while being sandwiched by the hinge portion. Therefore, the locking portion is firmly locked and the FP
C can be attached in a more reliable state.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of a mounting structure of a flexible printed circuit to a fixing member according to the present invention, and is a plan view illustrating a configuration on a flexible printed circuit side.

FIG. 2 is a perspective view illustrating a configuration on a fixing member side.

FIG. 3 is a partially enlarged longitudinal sectional view showing a main part of the fixing member.

FIG. 4 is a partially enlarged perspective view showing a main part of a fixing member different from FIG. 3;

FIG. 5 is a perspective view showing the attached state.

FIG. 6 is a perspective view showing a second embodiment of the mounting structure of the flexible printed circuit to a fixing member according to the present invention, and is a perspective view showing a main part of the fixing member side.

FIGS. 7A and 7B are side views from one direction for explaining the mounting, in which FIG. 7A is a state diagram showing a state before mounting, and FIG. 7B is a state diagram showing a state after mounting.

FIG. 8 is a perspective view showing an attached state of the conventional example.

[Explanation of symbols]

 11 Flexible Print Circuit (FPC) 12 Conductive Pattern 13 Film (Sheet Material) 15 Square Hole (Opening) 16 Circular Hole (Opening) 21 Protector (Fixing Member) 21a Fixed Surface 22 Hook (Hook) 22a Top (Opposite) 23 Clip (locking part) 23a Flexure part 31 Hinge plate (hinge part) 33 Locking hole

Claims (2)

(57) [Claims] 1. A mounting structure for fixing a flexible printed circuit to a fixing member in which a conductive pattern for electrically connecting electrical components is sandwiched by a sheet material, wherein the fixing means provided on the fixing member is provided on the flexible printing circuit. At least two or more openings of the same or different shape to be inserted are provided, and as a fixing means of the fixing member, the fixing surface is formed so as to be able to be inserted through the opening of the flexible printed circuit and faces a fixing surface for fixing the flexible printing circuit or an extension surface of the fixing surface And a hook portion having an opposing portion facing the edge of the opening moved in the planar direction, and a portion formed at a portion corresponding to a different opening of the flexible print circuit in a state facing the opposing portion of the hook portion. A member that engages with the opening by insertion to lock the movement of the flexible printed circuit. Structure for mounting the fixing member of the flexible printed circuit, characterized by comprising a part, the. A hinge portion rotatably held in the direction of the fixed surface outside the fixing surface of the fixing member, and a locking portion provided on a side of the hinge portion facing the fixing surface; When the print circuit is inserted into the hook portion and faces the opposing portion, a locking hole for engaging the locking portion is formed at a portion on the fixing member body side corresponding to a different opening of the flexible print circuit. The structure for mounting a flexible printed circuit to a fixing member according to claim 1.