JP4090904B2 - Vehicle interior light - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle interior light having a circuit constituted by bus bars, and more particularly to an assembly structure of a valve holder.
[0002]
[Prior art]
Many automotive interior lamps that use a bus bar system, in which a conductive plate integrated in advance by a bridge is fixed to the base of the lamp and at the same time the bridge is cut to form a circuit, are advantageous in terms of cost and are widely used. Yes. Further, in a bus bar type lamp, a boat-shaped bulb is often used as a light source because of easy arrangement of lamp components. In the boat-type valve holding structure, holders are arranged opposite to both ends in the longitudinal direction of the valve, and at least one of the holders is formed of an elastic member to elastically hold the valve and to make electrical connection with the valve holder. It ensures the valve and facilitates valve replacement.
[0003]
The following is known about the mounting structure of the valve holder.
[Patent Document 1]
Japanese Patent Laid-Open No. 2-6246 (FIG. 1)
[Patent Document 2]
JP-A-8-276457 (FIG. 14)
In FIG. 1 of Japanese Patent Laid-Open No. 2-6246, a valve holder having a spring property is pre-assembled by welding to a conductive plate integrated by a bridge, and then fixed to a base portion. In FIG. 14 of JP-A-8-276457, a conductive plate forming a circuit and a pair of valve holders are integrally formed.
[0004]
[Problems to be solved by the invention]
In the method shown in FIG. 1 of Japanese Patent Laid-Open No. 2-6246, in addition to equipment and jigs for fixing the conductive plate to the lamp base, equipment and jigs for fixing the bulb holder are required separately. In the method of FIG. 14 of Japanese Patent Laid-Open No. 8-276457, a pair of valve holders are integrated with a conductive plate forming a circuit, so that pre-assembly of the valve holder to the conductive plate is unnecessary, and the number of assembly steps is reduced. Although it is advantageous in terms of the point, a material having a spring property is inevitably used for the conductive plate because the valve needs to be securely held electrically. Therefore, since the entire conductive plate is formed of a material having spring properties, spring back after press forming occurs, it is difficult to ensure dimensional accuracy, and electrogalvanizing generally used as a conductive plate in general As a result, it was expensive in comparison with the steel plate.
[0005]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle interior light having an assembly structure of a valve holder that can be easily assembled and is inexpensive. It is in.
[0006]
[Means for Solving the Invention]
In order to achieve such an object, the present invention provides a base portion, a conductive plate fixed to the base portion to form a circuit, a boat-shaped valve, and a pair of valves disposed opposite to each other while holding both ends in the longitudinal direction of the boat-shaped valve. And at least one of the valve holders made of an elastic member is a vehicle interior lamp including a valve holding portion and a connection portion fixed in contact with the conductive plate, and the connection portion of the valve holder The conductive plate and the hole fixed to the base portion and the extending portion bent so as to be sandwiched by inserting the conductive plate are formed, and the portion of the conductive plate sandwiched between the valve holders has hole to be fixed to the insertion guide portion and the base portion is formed, in a state where the conductive plate to the valve holder is sandwiched, the same re the bulb holder and the conductive plate is integrally disposed on the base portion It is fixed by caulking and technical features that are.
[0007]
In addition, a latching portion is formed in the connection portion of the valve holder that is made of an elastic member and is fixed to the conductive plate in contact with the hole, and a hole is formed in a corresponding portion of the conductive plate, and the latching portion is the hole of the conductive plate. It is a technical feature that the positioning means of the valve holder is configured by being fitted and locked into the.
[0008]
In the above-described vehicle interior light, the pre-assembly is completed simply by inserting the bent portion of the valve holder into the conductive plate integrated via the bridge. Thereafter, the conductive plate with the valve holder sandwiched between the base portion is temporarily placed, and the conductive plate itself and the valve holder are fixed to the base portion simultaneously with the cutting of the bridge, so that the assembly becomes easy. In addition, the lamp holder can be manufactured at a low cost because no dedicated equipment for assembling the bulb holder is required.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1A is a perspective view of the valve holder 1 that elastically holds the valve, and FIG. 1B is a cross-sectional view of the locking hook 1g for positioning the valve holder 1 with the conductive plate and the mounting hole 1c. . The valve holder 1 is made of stainless steel and has a spring property as well as conductivity. A bent portion 1a having a substantially inverted U shape is formed, and a conical portion of a boat-shaped valve is formed in the vicinity of the distal end portion (free end side). A hole 1 d into which the end portion is inserted is disposed to form a valve holding portion 11.
[0010]
Then, a rectangular planar portion 1e extending in a right angle direction from the terminal portion of the inverted U-shaped portion and having the same width as that of the conductive plate is provided, and the hole 1c used for caulking together with the conductive plate 2 in the base portion 3 is planar. Two bent and extended portions 1b and 1b are formed at the portion 1e so as to be able to sandwich the conductive plate 2 from both ends in the longitudinal direction of the flat portion 1e toward the back side. As a matter of course, the gap x at the open end of the bent portion 1b is set to be equal to or less than the thickness of the conductive plate, and the open front end portion 1f is bent slightly in the shape of a letter to facilitate the insertion of the conductive plate. Therefore, it is opened more than the thickness of the conductive plate 2. In this way, the connection portion 12 to the conductive plate 2 is formed. Further, locking hooks 1g and 1g for positioning with the conductive plate 2 are formed on the edge portion of the flat surface portion 1e on the side of the bent extension portion 1b toward the bending direction side. In the present embodiment, two bent extending portions 1b and two locking hooks 1g are provided, but one each may be provided.
[0011]
The conductive plate will be described with reference to FIG. 2 (a perspective view of the conductive plate 2), FIG. 3 (a perspective view in the middle of assembly), and FIG. The conductive plate 2 is manufactured by pressing an electrogalvanized steel plate, and a plurality of conductive plates are integrated via bridges 2d provided at a plurality of locations shown in FIG. Two guide protrusions 2a for insertion are provided on the portion where the bent extension 1b of the valve holder 1 is inserted. The valve holder 1 and the base portion 3 are provided with holes 2b used for caulking and positioning square holes 2f, 2f into which the locking hooks 1g of the valve holder 1 are fitted and locked. Moreover, as shown in FIG. 3, the hole 2c utilized in order to fix the other site | part of the electrically-conductive board 2 to the base part 3 is provided in multiple places. Further, as shown in FIG. 4, another valve holder 2 e that holds the valve is formed integrally with the conductive plate at a position opposite to the portion into which the valve holder 1 is inserted.
[0012]
With reference to Fig.3 (a), the base part 3 of a lamp | ramp is demonstrated. The base portion 3 is made of a synthetic resin, and the portion where the valve holder 1 is disposed together with the conductive plate 2 is provided with a recess 3b at a corresponding position in order to avoid interference with the bent extension portion 1b of the valve holder. 3b is formed. Then, the rib 3a is formed for the purpose of co-caulking the valve holder and the conductive plate, and the rib 3d is formed corresponding to the hole 2c provided in the conductive plate 2 in order to fix other portions of the conductive plate to the base 3 as appropriate. Are disposed at a plurality of locations. Further, a plurality of square holes 3c are formed corresponding to the cutting positions of the bridge 2d of the conductive plate.
[0013]
Next, the assembly method will be described with reference to FIGS. First, the valve holder 1 is inserted along the guide 2a of the conductive plate 2 integrated via the bridge 2d. As shown in the cross-sectional view of FIG. 3B, when the hooks 1g and 1g of the valve holder 1 are continuously pushed to the end, the square holes 2f and 2f provided in the conductive plate 2 are provided. The position of the valve holder 1 in the insertion direction is determined. That is, the hole 2b of the conductive plate 2 and the hole 1c of the valve holder 1 are aligned, and the positioning with the corresponding other valve holder 2e is completed as shown in the sectional view of FIG. It will be.
[0014]
Next, the conductive plate 2 in a state in which the valve holder 1 is sandwiched is temporarily placed on the base portion 3 by inserting the ribs 3a and 3d of the base portion 3 into the holes 2b and 2c. Then, as shown in FIGS. 4A and 4B, the ribs 3a and 3d are crushed by pressing and the valve holder 1 and the conductive plate 2 are caulked and fixed to the base portion 3, and at the same time, the conductive plate 2 The bridges 2d arranged at a plurality of locations are cut by press working, and are folded into the square holes 3c of the base portion 3 and stored. In this state, a circuit is formed only after the integrated conductive plate 2 is separated.
Finally, the valve 4 is inserted and held in the valve holder 2e and the valve holder 1, which are integrally formed with the conductive plate 2, and the operation in the meantime is completed.
[0015]
Next, as another embodiment, a modification of the valve holder 1 is shown in FIG. In the above-described embodiment, the bending extension 1b is disposed so that the conductive plate is inserted from the bulb holding direction side so as to be clamped. However, depending on the lamp arrangement conditions, the bending plate 1b may be inserted in the opposite direction. .
[0016]
Next, a modification of the conductive plate 2 is shown in FIG. In the above-described embodiment, the guide is formed so as to protrude in the width direction of the conductive plate. However, depending on the material yield and circuit arrangement conditions, a notch may be provided and the stepped portion may be used as the guide.
[0017]
【The invention's effect】
In the vehicle interior light having the above-described structure for assembling the valve holder according to the present invention, only one of the pair of valve holders having elasticity is inserted into the integrated conductive plate via the bridge. Since the position of the valve holder is easily determined, pre-assembly is easily completed. Then, in the next process, assembling and fixing (caulking) of the conductive plate and the valve holder to the base portion is completed at the same time as cutting the bridge of the conductive plate, dedicated equipment (such as a press) and jigs are not required for pre-assembly. . In addition, since the valve holder connecting portion and the conductive plate are closely fixed by caulking, more reliable energization performance can be obtained with respect to vibration transmitted from the vehicle as compared with simply inserting the conductive plate into the conductive plate. Furthermore, combined with the fact that expensive spring materials are used only in necessary parts, it becomes possible to manufacture easily and inexpensively. Even when the product is disassembled, since the valve holder is only inserted into the conductive plate, it can be easily separated from the conductive plate, and it can be easily recycled in recent years.
[Brief description of the drawings]
FIG. 1 is a perspective view and a partial sectional view of a valve holder. FIG. 2 is a perspective view of a valve holder insertion part of a conductive plate. FIG. 3 is a perspective view in the middle of assembly and an enlarged sectional view of a locking hook portion of the valve holder. [Fig. 4] Assembly sectional view and enlarged cross-sectional view of the caulking portion of the valve holder [Fig. 5] Other embodiment of the valve holder [Fig. 6] Other embodiment of the conductive plate [Explanation of symbols]
1 Valve Holder 2 Conductive Plate 3 Base 4 Valve 11 Valve Holder Valve Holder 12 Valve Holder Connection

Claims (2)

A base part, a conductive plate fixed to the base part to form a circuit, a boat-type valve, and a pair of valve holders arranged to face each other while holding both ends in the longitudinal direction of the boat-type valve,
At least one of the valve holders made of an elastic member is a vehicle interior light composed of a valve holding portion and a connection portion fixed in contact with the conductive plate,
The connecting portion of the valve holder is formed with a conductive plate and a hole fixed to the base portion and an extended portion bent so as to be sandwiched by inserting the conductive plate,
A hole to be fixed to the insertion guide portion and the base portion of the valve holder is formed in a portion of the conductive plate sandwiched between the valve holder,
An interior lamp for a vehicle , wherein the valve holder and the conductive plate are fixed by caulking of the same rib integrally disposed on a base portion in a state where the conductive plate is sandwiched between the valve holders. A locking part is formed in the connection part of the valve holder made of an elastic member and fixed to the conductive plate in contact, and a hole is formed in the corresponding part of the conductive plate,
2. The vehicle interior light according to claim 1, wherein the locking portion is fitted and locked into the hole of the conductive plate to constitute a valve holder positioning means.

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