JPS6134752Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automobile noise filter for preventing noise from entering an automobile radio, stereo set, etc. through electrical wiring.

Conventional automotive noise filters of this type have a structure in which lead wires are drawn out from the noise filter body, which contains a built-in noise removal element consisting of a capacitor, coil, and other electronic components. This was done by inserting the lead wire. However, with this structure, work for fixing the noise filter body is required in addition to wiring work, which tends to result in poor workability.
In addition, there are many different specifications, and the length of the lead wire must be changed depending on the type, which has the drawback of requiring time and effort in manufacturing.

In view of the above points, the present invention has a structure in which coils, capacitors, and other electronic components as noise eliminating elements are installed in a connector that can fit into a general automotive standard connector installed on the car side. The present invention aims to provide a noise filter for automobiles that is easy to manufacture and easy to install.

Embodiments of the automotive noise filter according to the present invention will be described below with reference to the drawings.

In Figures 1 to 4, the terminal part (base part) of the connector 1 is one that complies with the standards established for automobiles, that is, it can be fitted into a standard connector for the automobile, and there are four terminals. It has faston terminals 2A to 2D. Here, the upper Faston terminals 2A, 2B are short terminals with a short connecting portion at the rear of the connector, and the lower Faston terminals 2C, 2D are long terminals with L-shaped extensions 3C, 3D extending long toward the rear of the connector. It has a shaku terminal. However, the parts other than the terminal structure are specially manufactured by the present inventor to create a structure suitable for integrating a noise filter. Fitting holes 4 are formed on both sides of the connector 1, fitting holes 5 are formed above, and fitting holes 6 are formed below. A box-shaped case 7 is integrally provided at the rear of the connector 1. Here, the case 7 is composed of two half-case bodies 8
Consisting of a combination of A and 8B, both half case bodies 8
A and 8B are fitted into each other and integrated into the connector 1. That is, the half case body 8A has a locking part 9 that fits into the fitting hole 4 of the connector 1, a locking part 10 that fits into the fitting hole 6, and further has a fitting hole 11 at the rear end. ing. Further, the half-case body 8B has a locking portion 1 that fits into the fitting hole 4 of the connector 1.
2, a locking part 13 that fits into the fitting hole 5, and a locking part 14 that fits into the fitting hole 11 of the half case body 8A. Further, on the inner surface of the half case 8A, L-shaped extensions 3 of the lower Faston terminals 2C and 2D are provided.
Guide groove 15 for positioning C and 3D respectively
is formed, and a coil positioning rib 16 is formed to protrude between the L-shaped extension parts 3C and 3D,
Furthermore, a capacitor positioning rib 17 is formed behind the coil positioning rib 16 in a direction perpendicular thereto. This capacitor positioning rib 17 is the L-shaped extension part 3C, 3 of the Faston terminal 2C, 2D.
It has a positioning groove 18 for positioning the rear end of D. On the other hand, coil positioning ribs 19 are also formed in the half case body 8B at positions corresponding to the coil positioning ribs 16. A chiyoke coil 20A is electrically connected between the first terminal 2A, which is a short terminal, and the first terminal 2C, which is a long terminal, and the first terminal 2B, which is a short terminal, and the first terminal 2D, which is a long terminal, are connected. The chiyoke coil 20B is electrically connected between them. These chiyoke coils 20A, 20B are
A winding 22 is provided around a rod-shaped magnetic core 21 made of ferrite or the like, and the coil positioning rib 1
They are insulated and isolated by 6 and 19 so as not to come into contact with each other. Further, a capacitor 2 is provided at the rear end of the case partitioned by the capacitor positioning rib 17.
This capacitor 23 is electrically connected between the Faston terminals 2C and 2D.

According to the above embodiment, the connector 1, which has a terminal structure that can be fitted to a standard product connector on the automobile side, is integrated with a case containing a built-in noise eliminating element, so that the troublesome wiring work and noise filtering required in the past are avoided. This eliminates the need for fixing the main body, and can be installed by simply fitting it into a connector that has a receptacle provided on the vehicle side. In addition, by making one of the Faston terminals a short terminal and the other a long terminal having an L-shaped extension, it is possible to electrically connect a noise removal element between the short terminal and the long terminal, thereby reducing noise. It is possible to eliminate the need for a substrate or wiring for interconnecting the removal elements. Furthermore, since the case 7 is composed of two half-case bodies 8A and 8B, it is extremely easy to assemble the inside of the case, and each half-case body 8A and 8B can be used to position the noise removal element and for mutual insulation. By forming the ribs 16, 17, 19, the chiyoke coils 20A, 2 as noise removing elements
Positioning of 0B and capacitor 23 becomes easy,
Reliability against vibrations and the like can also be improved.

It is of course possible to change the number of terminals of the connector, the number of noise removal elements, and the interconnection relationship depending on the type of vehicle and the purpose of the vehicle.

As explained above, according to the present invention, the structure is such that a coil and a capacitor as a noise eliminating element are provided in a case integrated into a connector with a terminal structure generally used for automobiles, which is easy to manufacture and easy to install. A simple noise filter for automobiles can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a plan sectional view showing an embodiment of the automotive noise filter according to the present invention, FIG. 2 is a sectional view of the same side,
FIG. 3 is a front view of the same, and FIG. 4 is a front sectional view of the same. 1... Connector, 2A to 2D... Faston terminal, 3C, 3D... L-shaped extension, 4, 5, 6
... Fitting hole, 7 ... Case, 8A, 8B ... Half case body, 9, 10, 12, 13, 14 ... Locking part, 16, 19 ... Coil positioning rib, 17 ...
...Capacitor positioning rib, 20A, 20B...
Chiyoke coil, 23... capacitor.

Claims (1)

[Scope of utility model registration request] A connector having short terminals and long terminals, a noise eliminating element electrically connected between at least the short terminals and the long terminals, and two half-case bodies having a mutually fitting structure. and a case in which a positioning rib is formed to regulate the position of the noise removal element, the noise removal element is housed in the case, and the noise removal element is fitted and integrated with the connector in the case. An automotive noise filter characterized by: