JPS6313842A - Wiring device for vehicle - Google Patents

Abstract

PURPOSE:To make it possible to easily recognize a fused position so as to improve maintenability by exposing a fuse means from a resin forming substance constituting a trim panel in which a conductive passage is formed in a body. CONSTITUTION:A fuse means 6 is exposed at an inconspicuous position on the lower sideface of a panel through a panel skin 3 and a resin foaming substance 2. That is, flexible print board 4 having a conductive passages 7, 8 pass through below a rectangular opening 6a where the resin foaming substance 2 doesn't exist. The resin foaming substance 2 doesn't exist either below this flexible print board 4 and forms an opening having a shape almost same as the opening 6a but a little smaller than it. The constitution is arranged in such a way that the conductive passages 7, 8 may be easily repaired by cutting off the flexible print board 4 at a point corresponding to the opening 6b and engaging a fuse connector separately prepared, when a fuse section 7 is fused.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a wiring device for a vehicle, which comprises a conductive path integrally molded into an interior panel of a vehicle, such as an instrument panel, a door panel, or a center console.

(Prior Art) In recent years, it has been proposed for automobiles etc. to be equipped with a conductive path inside the panel for supplying power to the load attached to the interior panel (for example,
No. 53035), in particular, it has been developed into a wiring device for a vehicle that is made by integrally molding a flexible print on which conductive paths are formed together with a resin foam that constitutes the panel (for example, Utility Model Application No. 48-1083313, Utility Model Application No. 1083313). 59-14746, etc.).

(Problems to be Solved by the Invention) Since such a vehicle wiring device is formed integrally with the panel, it is desirable that the manufacturing process is simplified in terms of both panel manufacturing and electrical wiring. However, if the conductive path is fused in any part of the flexible printed board, it is extremely difficult to find the blown part, and even if it is found, the part of the flexible printed board in that part is damaged. Replacement was extremely difficult, and depending on the melted area, the beauty of the panel could be damaged, resulting in a lack of reliability.

Therefore, an object of the present invention is to provide a highly reliable wiring device for a vehicle in which measures against fusing of a flexible printed board can be easily taken.

(Means for solving the problem) In order to achieve this object, according to the first invention, a conductive path (
8) is integrally molded with the resin foam (2) constituting the interior panel of the vehicle, and the conductive path (8) has a fuse means (8) in a part, and this fuse means (6) It should be exposed from the resin foam (2).

Further, according to the second invention, the conductive path (8) is integrally molded with the resin foam (2) constituting the interior panel of the vehicle, and the conductive path (8) is partially connected to the fuse means (6). The resin foam (2) is provided with marks (15) and (1B) indicating the presence of the fuse means (8) on the surface of the buried portion of the fuse means (6).

According to such a configuration, the presence of the fuse means allows only a portion of the fuse means to be blown by excessive current, and the location of the fuse means can also be easily known.

(Embodiments of the Invention) The present invention will be described in detail below with reference to the accompanying drawings. Note that the same reference numerals in each figure indicate similar objects.

FIG. 1 shows a wiring device for a vehicle according to an embodiment of the present invention, and a part of an instrument panel of an automobile is shown upside down for convenience of explanation. In the figure, (1) is a base frame forming the foundation of the panel;
(2) is a resin foam that is a cushioning member injected onto the frame (1), (3) is a skin that protects this resin foam (2) and improves its appearance, and (4) is an electrical VC connection. A flexible printed board (5) is a speedometer and a tachometer, which are loads to which electric power or electric signals are supplied by the flexible printed board (4), and (8) is a fuse means.

As can be seen, the fuse means (8) is exposed at an inconspicuous location on the underside of the panel through the skin (3) and resin foam (2) of the panel. FIG. 2 shows this fuse means (6) in detail. Fuse means (
6) is a distance below the rectangular opening (6a) where the resin foam (2) is not present. Conductive path (7) at position (dl)
, (8) are passing through the flexible printed board (4). There is no resin foam (2) on the lower side of this flexible printed board (4), and this opening (6b) is also substantially similar to the opening (6a) and has a slightly smaller shape. From flexible printed board (4) to resin foam (2)
The distance to the end, that is, the surface of frame (1) is (d2)
This fuse means (6) comprises parts (7)-(7) of two substantially parallel metal strips (8)-(8) formed on a flexible printed board (4), The width (wl) of the portion (7)-(7) of the means (8) is smaller (wlcw2) than the width (W2) of the other portion (8)-(8), so that the metal strip (8) )
By appropriately selecting the material and size of (7) and (7), any current can be treated as an excessive current in the fuse part (7).
It is possible to decide whether to melt or not. In addition, the flexible printed board (
A planar cutout (9) is provided at the location where the fuse portion (7) of 4) is located.
) fits into the fuse connector (10) as shown in Figure 3, and when the fuse (7) blows out, the fuse connector (
10) can be easily removed by fitting.

Therefore, if an excessive current flows through the electric circuit, the fuse means (6) exposed from the foam body (2) will be fused, thus preventing the electric circuit within the foam body (2) from being disconnected. There is. In other words, since the fused area can be limited to the exposed area of the foam (2), as shown in Figure 3, the electrically disconnected state can be restored using a separately prepared fuse connector (10), allowing for repair and maintenance. Improves sex. That is, the opening (8a) of the fuse means (6),
(13b) is provided with a block-shaped connector (10) made of an insulating material that can be firmly mated with the connector (13b), and this connector (10) has a terminal portion (11) that can come into contact with the metal strip (8) and a fuse (12). ), and the arrangement of the terminals (11) and fuses (12) is shown in FIG. 4, for example. Figure (a) shows a terminal (!l) and a fuse (12
) are formed in a series, and FIG. 3(b) shows another fuse member (13) connected between terminals (11) and (11). Alternatively, it is also possible to connect the fused fuse strip (7) with solder having a suitable melting point.

According to the above embodiment, when an excessive current flows through the electric circuit including the load attached to the panel, the fuse means exposed to the outside of the resin foam is blown, and the wire is broken inside the mold made of the resin foam. In other words, the fusing location can be limited to the exposed location from the resin foam, which facilitates maintenance and inspection.

FIG. 5 shows another embodiment of the present invention, and shows the first embodiment.
Unlike the embodiment of FIGS. and 2, the fuse means (8)
are not exposed from the resin foam (2), provided that the resin foam (2) or the skin (
In the part 3), marks (15) and (1s) are provided to indicate the presence of the fuse (7). Mark (15
) is a cut into the resin foam (2), and when the melt is cut, the cut point can be easily recognized from the outside, and this mark (
By removing the resin foam material (2) at the portion 15), repair can be performed using the same method as described above. Mark (16
) is a protrusion and simply indicates the presence of fuse (7), and may also be a character such as "fuse" or r FUSEJ. The configuration of other parts is the same as that explained with reference to FIG. 2, and the explanation will be omitted.

According to this embodiment, the fused location can be easily recognized as in the previous embodiment, and the fuse is not exposed, so it is safe.

(Effects of the Invention) As explained above, according to the present invention, it is possible to easily recognize the melted point and improve the maintainability, and it is possible to obtain a safe, highly reliable, and simply configured vehicle wiring device. can. In addition, although the above example shows application to an automobile instrument panel, it can also be applied to a door panel,
Application to other panels such as center consoles is also possible.

[Brief explanation of drawings]

FIG. 1 is an overall diagram of a vehicle wiring device according to an embodiment of this description, FIGS. 2 and 3 are explanatory diagrams of main parts of a vehicle wiring device according to an embodiment of this invention, and FIG. 4 is an illustration of the main parts of a vehicle wiring device according to an embodiment of this invention. FIG. 5 is an explanatory diagram of another main part of the vehicle wiring device according to the embodiment of the invention. FIG. 5 is an explanatory diagram of the vehicle wiring device according to the other embodiment of the present invention. [In +, (1) is the base frame, (2) is the resin foam, (3) is the skin, (4) is the flexible printed board, (5) is the load, (6) is the fuse means, (7), (
8) is a conductive path, (10) is a connector, (11) is a terminal,
(12) and (13) are fuses, and (15) and (1B) are marks. Patent applicant: Agent for Honda Motor Co., Ltd.
Patent Attorney 2 1) Touichibe Patent Attorney Kuni Ohashi Otoma Patent Attorney Udo Koyama Patent Attorney No 1)
August 22, 1986

Claims (4)

[Claims] (1) In a vehicle wiring device in which a conductive path is integrally molded with a resin foam constituting an interior panel of a vehicle, the conductive path has a fuse means in a part, and the fuse means is formed from the resin foam. A vehicle wiring device characterized by being exposed. (2) In the device according to claim 1, the conductive path is a conductor printed on a flexible substrate, and the fuse means adjusts the conductive cross-sectional area of the conductor according to the limit of allowable current. A wiring device for a vehicle, characterized in that the wiring device comprises a continuous portion with the conductor formed smaller than the portion. (3) In a vehicle wiring device comprising a conductive path integrally molded with a resin foam constituting an interior panel of a vehicle, the conductive path has a fuse means in part, and the resin foam has a fuse means. A wiring device for a vehicle, comprising a mark indicating the presence of the fuse means on the surface of the buried portion. (4) In the device according to claim 3, the conductive path is a conductor printed on a flexible substrate, and the fuse means adjusts the conductive cross-sectional area of the conductor according to the limit of allowable current. A wiring device for a vehicle, characterized in that the wiring device comprises a continuous portion with the conductor formed smaller than the portion.