JPH0343749Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a mounting structure for electrical parts, and in particular, a conductive part formed near the outer edge of a flexible wiring board attached to a case, and a mounting structure for electrical parts other than the flexible wiring board. The conductive parts of the flexible wiring board and the case are fixed to the case in an electrical connection with each other by screws that pass through both conductive parts and are screwed into the case, and the screws screwed into the case connect the flexible wiring board and the case. This invention relates to an electrical component mounting structure in which an electrical component inserted between the casing and the casing is simultaneously penetrated and fixed to the case.

[Conventional technology]

A conventional mounting structure for electrical components of this type will be explained based on FIGS. 8 and 9.

The illustrated mounting structure for electrical components is used for instrument wiring, etc., and a flexible wiring board 2 on which a circuit pattern 2a is printed and wired is attached to a case 1 (the same applies to chassis and other fixed members). A conductive terminal 2b as a conductive part provided at the end of the circuit pattern 2a located near the outer edge of the flexible wiring board 2 is connected to a terminal other than the flexible wiring board by means of a screw 3 screwed into the case 1. A terminal, which is a conductive part at the end of an external lead wire 4, is connected and fixed.

Furthermore, due to the omission of mounting parts and space problems, other electrical components 5 having mounting brackets 6 are not mounted on flexible wiring boards 2.
and the case 1, and is integrally fixed to the external lead wire 4 by the screw 3.
At this screw mounting part, the flexible wiring board 2
Since the conductive terminal 2b is exposed on the front side of the flexible wiring board 2, the bracket 6 made of a conductive material cannot be fixed on the same side as the external lead wire 4, but an insulating film is formed on the back side of the flexible wiring board 2. Therefore, the conductive terminal 2b and the bracket are well insulated.

FIG. 9 is a cross-sectional view of this screwed part, in which the end of the external lead wire 4 is covered with an insulating tube 4a, and is fixed to the upper surface of the flexible wiring board 2 with a screw 3 via a washer 7. The bracket 6 is tightly held between the back surface of the flexible wiring board 2 and the top surface of the case 1.

[Problem that the invention attempts to solve]

In the conventional electrical component mounting structure described above, during assembly, the flexible wiring board 2 is first attached to the case 1 with screws or other means, and then the outer edge of the flexible wiring board 2 is attached to the case 1 by screws or other means. The bracket 6 is inserted from the side, and the bracket 6 is fixed to the case 1 together with the external lead wire 4 using the screws 3. However, since the flexible wiring board 2 is thin and tightly attached to the case 1, it is difficult to insert the bracket 6. This requires the operator to lift the flexible wiring board 2 using fingers, a jig, or the like, resulting in poor work efficiency.

Therefore, in view of the above-mentioned conventional problems, the present invention provides an electrical component that facilitates the work of inserting the electrical component between the flexible wiring board and the case, thereby improving the workability of installing the electrical component. The purpose is to provide a mounting structure for

[Means for solving problems]

In order to achieve the above object, the electrical component mounting structure created by the present invention connects the conductive part formed near the outer edge of the flexible wiring board attached to the case and the conductive part of something other than the flexible wiring board. An electrical component is fixed to the case in a mutually electrically connected state by screws that penetrate the conductive part and are screwed into the case, and the screws screwed into the case are inserted between the flexible wiring board and the case. In the mounting structure for the electrical component, which is fixed to the case by penetrating the flexible wiring board at the same time, a gap is provided between the case and the flexible wiring board for inserting the electrical component without screwing the screw into the case. It is characterized by the fact that it was formed.

In this preferred embodiment, in order to form this gap, a protrusion that lifts the conductive part of the flexible wiring board away from the case or a recess that lifts the conductive part of the flexible wiring board away from the case is formed in the case. .

[Example of idea]

An embodiment of the present invention will be described based on FIGS. 1 to 7.

FIG. 1 is a perspective view of an embodiment of the present invention;
Like the conventional example shown in the figure, a case 1, a flexible wiring board 2, an external lead wire 4, an electric component 5, and a bracket 6 are provided, and the external lead wire 4 and the bracket 6 are fixed to the case 1 with screws 3.

FIG. 2 is a sectional view illustrating the mounting work of the bracket 6. On the upper surface of the case 1, there is a mounting portion 1a for the screw 3 when viewed from the outer edge of the flexible wiring board 2.
A protrusion 1b is formed in a deeper position. A gap 8 is formed between the outer edge of the flexible wiring board 2 and the case 1 by the protrusion 1b.
By inserting the tip of the bracket 6 through the gap 8, the bracket 6 can be easily placed on the screw attachment portion 1a.

FIG. 3 is a perspective view of another embodiment, in which a recess 1c is formed in the upper surface of the case 1 located below the outer edge of the flexible wiring board 2.

As can be seen from FIG. 3, this recess 1c has a width larger than the width of the bracket 6, and its wall surface is
It is formed into a tapered shape as shown in the cross-sectional view of the figure. As a result, after the flexible wiring board 2 is attached, a gap 8 is formed between the outer edge of the flexible wiring board 2 and the upper surface of the case 1, and the bracket 6 can be easily inserted. Also, the recess 1c
Since the wall surface is formed as a tapered surface as shown, the tip of the bracket 6 is smoothly guided between the flexible wiring board 2 and the case 1.

FIGS. 5 and 6 show other embodiments. In this embodiment, the entire mounting portion of the bracket 6 including the mounting portion 1a of the screw 3 is a recess 1c, and the depth of the recess 1c is a constant dimension equivalent to the thickness of the bracket 6. By doing this, as shown in FIG. 7, the flexible wiring board 2 is not deformed by the bracket 6, and the outer edge of the board 2 is brought into close contact with the bracket 6, making it easy to install. There is no risk of it getting caught on other parts during work and getting damaged.

Although not shown in the drawings, in the above embodiment, the outer shape of the recess 1c is made substantially the same as the outer shape of the insertion part of the bracket 6, so that the bracket 6 is positioned by the recess 1c, and there is no looseness after installation. It can also prevent sticking.

[Effect of idea]

As explained above, according to the present invention, the conductive part of the flexible wiring board attached to the case and the conductive part of something other than the flexible wiring board are fixed to the case in a mutually electrically connected state, and the flexible wiring board As a structure that forms a gap between the case and the flexible wiring board for inserting the electrical components in a state where the screws for fixing the electrical components inserted between the case and the case are not screwed into the case at the same time. This makes it easier to insert electrical components between the flexible wiring board and the case, and the efficiency of the electrical component installation work is greatly improved.

[Brief explanation of drawings]

Figures 1 and 2 are perspective views of the first embodiment of the present invention and sectional views explaining the installation work, and Figures 3 and 4 are perspective views of the second embodiment of the invention and sectional views explaining the installation work. 5 and 6 are perspective views of the third embodiment of the present invention and sectional views to explain the installation work, and FIG. 7 is a sectional view to explain the functions and effects of the third embodiment. 8 and 9 are a perspective view and a sectional view of a conventional example. 1... Case, 2... Flexible wiring board, 2
a...Circuit pattern, 2b...Conductive terminal, 3...
Screw, 4... External lead wire, 5... Electrical component, 6
...Bracket, 8...Gap.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A conductive part formed near the outer edge of a flexible wiring board attached to the case and a conductive part of something other than the flexible wiring board are inserted into the case by penetrating both conductive parts. They are fixed to the case in a mutually electrically connected state by the screws that are screwed together, and the screws that are screwed to the case also penetrate the electrical components inserted between the flexible wiring board and the case and are fixed to the case. In the electrical component mounting structure according to the present invention, a gap is formed between the case and the flexible wiring board for inserting the electrical component in a state where the screw is not screwed into the case. Parts mounting structure. (2) Utility model registration claim 1, characterized in that the case is provided with a protrusion that lifts the conductive portion of the flexible wiring board away from the case when no screws are screwed into the case.
Mounting structure of electrical parts described in section. (3) Utility model registration claim 1, characterized in that a recess is formed in the case to lift the conductive portion of the flexible wiring board from the case when no screws are screwed into the case.
Mounting structure of electrical parts described in section.