JPH0543493Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a circuit protection cover for protecting a circuit board provided on the outside of an instrument case for a vehicle or the like.

(Prior Art) Generally, inside a vehicle instrument case, there are instruments that indicate the vehicle operating status, such as a speedometer with a speed alarm function, an engine tachometer, a fuel gauge, and a temperature gauge, as well as instruments that indicate the state of the oil pressure and the door. Contains a central warning device that centrally displays various vehicle conditions such as the opening/closing status of the handbrake, the operating status of the handbrake, and the upward lighting status of the headlight. Electrical power is now supplied to devices and lighting lamps from the vehicle's battery via electrical cables. In this case, for example, as disclosed in Japanese Utility Model Application Publication No. 60-124086, a highly flexible flexible printed wiring board on which a predetermined conductive circuit pattern is formed is attached to the back of the instrument case, and the electric cable is The flexible printed wiring board is electrically connected to a printed wiring board, and the flexible printed wiring board is electrically connected to the electric meter, display equipment, lighting equipment such as a lamp, etc. By the way, as shown in the above-mentioned conventional publication and shown in FIG.
In addition to the flexible printed wiring board 2, an electrical device 3 in which various electronic components are mounted on a printed circuit board may be attached to the back surface of the instrument case 1. This electrical device 3 is fixed to insulating legs 4 protruding from the back surface of the instrument case 1 with screws 5, and predetermined terminals of the electrical device 3 and the flexible printed wiring board 2 are connected to each other by lead wires 6. The upper surface of the electrical equipment 3 is covered with a protective cover 7 to prevent it from being hit by metal pieces or the like and being shot.
However, in this case, since the installation of the electric device 3 and the connection of the lead wire 6 require double effort, one end of the conductive metal leg is fixed to a predetermined terminal of the electric device 3 by soldering. There is also a method of fixing the other end of this metal leg to the instrument case 1 with screws so that it comes into contact with a predetermined terminal of the flexible printed wiring board 2.

(Problem to be solved by the invention) In this case, the electrical equipment 3 is covered with the protective cover 7, but since the metal legs are exposed, there is a possibility that a metal piece such as a screwdriver may come into contact with the metal legs. There is a risk of shoots, etc. Further, since the protective cover 7 is only secured to the electrical device 3 by fitting or the like, there is also the problem that it is easily removed due to vibrations of the vehicle.

The present invention has been made based on the above-mentioned problem, and aims to provide a circuit protection cover that can protect the metal legs and is difficult to come off.

[Structure of the idea]

(Means for solving the problem) The present invention relates to a circuit protection cover in which an electrical device is provided on the back side of an instrument case on which a conductive circuit pattern is formed, and this electrical device is covered with an insulating protective cover. The circuit protection cover includes conductive metal legs that electrically connect the conductive circuit pattern and the electrical device and secure the electrical device to the instrument case, and an insulating protective cover that integrally covers the electrical device and the metal legs.

(Function) The insulating protective cover integrally covers the electrical equipment and the metal leg, reducing the exposure of the conductive part and making it difficult to come off.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings. In Figures 1 and 2, instrument case 1
A lower step portion 12 is formed on a part of the back surface of the instrument case 1, and a flexible printed wiring board 14 having a conductive circuit pattern 13 is attached to the back surface of the instrument case 11 including the step portion 12. The flexible printed wiring board 14 is attached by press-fitting the small holes 16 of the flexible printed wiring board 14 into projections 15 formed on the instrument case 11 and locking them therein. Step part 1 of instrument case 11
2 Above there are many electronic components 1 on the printed circuit board 17.
8 is installed and electrically connected to the flexible printed wiring board 14. Reference numeral 20 denotes a conductive metal leg having horizontal terminal portions 21 and 22 connected to each other at both ends, and is used to attach the electric device 19 to the instrument case. metal legs 20
The upper terminal portion 21 is directly soldered to the terminal of the electrical device 19 to be connected to the flexible printed wiring board 14 and fixed to the electrical device 19. Also,
The lower terminal portion 22 of the metal leg 20 is placed on the terminal of the flexible printed wiring board 14 that is connected to the electrical equipment 19, and is fixed to the instrument case 11 with screws 23 together with a protective cover to be described later. The protective cover 24 is made of an insulating material such as synthetic resin, and is formed to integrally cover the electric device 19 and the metal leg 20. One side of the protective cover 24 is fixed to the end of the printed board 17, and the other side is fixed to the end of the printed circuit board 20. It is formed into a shape along the outer periphery, and the horizontal mounting part 25 is placed over the terminal part 22 and is screwed together with the metal leg 20 using screws 23 to be attached to the instrument case 11.

In the present invention constructed in this way, the metal leg 2 is used for mounting the electrical equipment 19 and wiring the electrical equipment 19 and the flexible printed wiring board 14.
0, since the electrical equipment 19 and the metal leg 20 are integrally covered by the protective cover 24, there is less exposure of the conductive part and the risk of being shot by metal pieces etc. is reduced. be done. In addition, since the protective cover 24 is integrated, the installation process is simple as it only needs to be installed once, and the mounting part 25 is in close contact with the terminal part 22 due to its shape following the metal leg 20, so it can be tightened with screws. The load on the protective cover 2
4 and are distributed evenly over the entire surface of the terminal portion 22, thereby increasing the connection stability between the terminal portion 22 and the terminals of the flexible printed wiring board 14. Furthermore, protective cover 2
4 has a shape that follows the metal leg 20, so even if the metal leg 20 is tilted, it can be corrected by tightening the screws.
And since it is screwed, there is little risk of it coming off.

Above, one embodiment of the present invention has been described in detail.
It can be modified as appropriate within the scope of the gist of the present invention. For example, although the terminal of the electrical device 19 and the terminal portion 21 of the metal leg 20 are connected by soldering, it is also possible to connect them with screws. In addition, conductive circuit pattern 1
3 may be formed of a material other than the flexible printed wiring board 14. Furthermore, the electrical equipment 19 can also be attached to a location other than the stepped portion 12 of the instrument case 11.

[Effect of idea]

As described in detail above, according to the present invention, an electrical device is provided on the back side of an instrument case on which a conductive circuit pattern is formed, and in a circuit protection cover that covers this electrical device with an insulating protective cover, the conductive circuit pattern and the electrical The metal leg is provided with a conductive metal leg that electrically connects the electrical device and fixes the electrical device to the instrument case, and an insulating protective cover that integrally covers the electrical device and the metal leg. It is possible to provide a circuit protection cover that is not only able to protect the circuit but also does not easily come off.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a sectional view of the same, and FIG. 3 is a sectional view showing a conventional example. 11... Instrument case, 13... Conductive circuit pattern, 19... Electrical equipment, 20... Metal leg, 24...
...protective cover.

Claims (1)

[Scope of utility model registration request] An electrical device is provided on the back side of an instrument case on which a conductive circuit pattern is formed, and a circuit protection cover that covers this electrical device with an insulating protective cover electrically connects the conductive circuit pattern and the electrical device, and also connects the electrical device to the electrical device. A circuit protection cover comprising: a conductive metal leg that fixes a device to the instrument case; and an insulating protective cover that integrally covers the electrical device and the metal leg.