JPH019041Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to the improvement of bicycle lamps, and is concerned with the improvement of bicycle lamps, and involves permanent contact continuity between a light bulb built into the lamp body and a contact plate that contacts the rear contacts of the light bulb. The purpose of this is to improve the durability of the lamp.

(Prior Art) The structure of a conventionally known bicycle lamp generally includes, as shown in FIG. 1, a light bulb 4 built into a lamp body 1, a socket 3 for holding the light bulb, a reflector 2, and a contact plate 5 which is brought into contact with the rear contact 4a of the light bulb 4, and the contact plate 5 is constructed by attaching its base end mounting portion to the lamp body 1 with a caulking stud 6 or the like via a suitable electrical insulating material. ing.

(Issues to be solved by the design) However, in the case of the above-mentioned conventional structure, during the process of running day after day regardless of whether it is rain or shine and being used for a long period of time, the humidity inside the lamp itself and the intrusion of outside air may cause the contacts to Corrosion progresses over time at the contact part of the plate with the rear contact of the light bulb, and as a result, the contact continuity gradually deteriorates and the light bulb no longer lights up.

In the case of such poor contact, first disassemble the lamp body and take out each part, polish the contact plate with sandpaper, etc., and then reassemble and use it to restore the original function of the lamp. can recover.

However, the above-mentioned work can only be carried out by a person who has a certain level of electrical or mechanical knowledge, and in addition to requiring various tools, it is also troublesome to ask a specialist engineer to perform the work. , typically requiring the entire lamp to be replaced.

(Means for Solving the Problems) The present invention aims to eliminate the drawbacks of the conventional structure described above and provide a bicycle lamp with good durability. It consists of a built-in light bulb, a socket for holding the light bulb, a reflector, and an elastic contact plate for power supply that brings the tip contact part into contact with the rear contact of the light bulb, and the elastic contact plate has a mounting part at the base end. At the same time, a vibrating part with a narrow plate width is formed approximately in the middle, and a contact part is formed in a direction substantially perpendicular to the plane of the vibrating part in the distal direction via the vibrating part, and the contact part The present invention relates to a bicycle lamp characterized in that the surface of the lamp is roughened.

(Function) When the bicycle lamp of the present invention is attached, the entire lamp also resonates and vibrates due to the vibrations caused by the running of the bicycle. In this case, since the elastic contact plate is formed with a vibrating part with a narrow plate width, the contact part in the tip direction from the vibrating part vibrates more violently than the vibration of the lamp body itself, and is in constant contact with the vibrating part. The rear contact of the lamp is polished by the roughened contact part, so that the contact continuity between the rear contact of the lamp and the power supply contact plate becomes even better depending on the degree to which the bicycle is ridden, increasing durability. Improve.

(Embodiment) The specific content of the present invention will be explained below based on the illustrated embodiment. FIGS. 2 and 3 show a first embodiment of the present invention.

In this case, a contact plate 5 with elastic force such as a plate spring is used.
A vibrating part 5c whose plate width is narrowed by an indented part 5e is formed in the middle in the length direction, and the tip contact part 5a easily slides against the rear contact 4a of the light bulb when the contact plate is vibrated by the vibration 5c. In order to facilitate movement, the surface of the contact portion 5a in the distal direction of the elastic contact plate 5 is twisted approximately 90 degrees to the surface of the vibrating portion 5c so as to be approximately perpendicular to the surface of the vibrating portion 5c. There is. In this case, it is preferable to adjust the structure of the vibrating part 5c so that the natural frequency of the contact part that resonates with the vibration of the bicycle frame is within the range of about 8 to 12 Hz.

Further, at the base end opposite to this, a mounting portion 5b is formed by forming a hole for a riveting rivet.

Furthermore, the surface of the contact 5a (the rear contact 4 of the light bulb)
A roughening process 5d is applied to the surface in contact with the surface (a). In this case, various types of surface roughening processing 5d can be considered, but for example, the surface roughening process 5d may be performed by making vertical and horizontal mesh-like notches on the plane of the contact portion 5a, or by applying a large number of unevenness by embossing. , it is sufficient if the function is substantially like that of a chisel.

Further, FIG. 4 shows a second embodiment of the present invention.

In this case, the contact portion 5
As a means for forming the plane a at a substantially right angle, the first
Instead of twisting the elastic contact plate 5 of the embodiment, the contact portion 5
The contact portion 5a is formed by significantly expanding the plate width in the area where a is planned to be formed, and then bending a part of it approximately at right angles, thereby forming the contact portion 5a.
The contact axis X and the vibration axis Y of the vibrating part 5c are made substantially perpendicular to each other, and the two axes are spaced apart by a certain distance.

(Effects of the invention) As described above, the present invention forms a vibrating part with a narrow plate width approximately in the middle of the elastic contact plate, makes the surface of the contact part approximately perpendicular to the surface of the vibrating part, and furthermore, the contact part Because the surface of the elastic contact plate is roughened to have a substantially scratch-like function, when the roughened portion of the elastic contact plate comes into contact with the rear contact of the light bulb, at least a plurality of convex portions are formed. This results in a state of multiple point contact due to the contact, which does not cause poor contact due to surface corrosion compared to the conventional surface contact state, and the aforementioned multiple convex portions reliably dig into the rear contact of the light bulb to maintain a continuous state. Not only this, but also the contact part of the elastic contact plate vibrates greatly due to resonance with the vibration of the frame as the bicycle runs, and as a result, the rear contact of the lamp is polished, and the rear part of the lamp is damaged in proportion to the degree of bicycle travel. The contact continuity between the contact and the power feeding elastic contact plate is improved, improving durability.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a main part of a conventionally known bicycle lamp, Fig. 2 is a perspective view of a contact plate according to an embodiment of the present invention, and Fig. 3 is a state in which the contact plate shown in Fig. 2 is attached. FIG. 4 is a perspective view schematically showing a bicycle lamp, and FIG. 4 is a perspective view of a contact plate showing another embodiment of the present invention. 1...Lamp body, 2...Reflector, 3...Socket, 4...Light bulb, 5...Elastic contact plate, 5a...
Contact part, 5b...Mounting part, 5c...Vibration part,
5d... Roughened part, 5e... Indented part.

Claims (1)

[Scope of utility model registration request] It consists of a light bulb built into the inside of the lamp body, a socket for holding the light bulb, a reflector, and an elastic contact plate for power supply that contacts the rear contact of the light bulb with the tip contact part.The elastic contact plate is attached to the base. It has a mounting part at the end, a vibrating part with a narrow plate width approximately in the middle, and a contact part having a surface substantially perpendicular to the surface of the vibrating part in the direction of the tip via the vibrating part. , and furthermore, the surface of the contact portion is roughened.