JPH0619180Y2 - Socket holder - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is called a one-touch holder or the like, and relates to the structure of a socket holder provided for easily enabling / disconnecting a light bulb to / from a vehicle lamp or the like. Is.

[Conventional technology]

FIG. 3 shows a conventional socket holder of this type, and the socket holder 21 in which the light bulb 2 is mounted in advance.
Includes a seat surface 21a and a cylindrical portion 2 connected to the seat surface 21a.
1b has a mounting claw 21c which is formed so as to project to the seat surface 21a and faces the seat surface 21a at an appropriate interval, and the cylindrical portion 21b of the socket holder 21 can be inserted into one of the substrates 3 and the insertion claw. 21c is provided with an insertion hole 3a provided with an escape portion 3b. The socket holder 21 is inserted into the insertion hole 3a and rotated clockwise so that the seat surface 21a and the mounting claw 21c are sandwiched. It is worn, and when it is detached, it may be rotated in the counterclockwise direction, and it is easy to attach and detach without using any special tool.

[Problems to be Solved by the Invention] However, in the above-described conventional structure, the force required for rotation is the same when the socket holder 21 is attached and detached. The distance between the seat surface 21a and the mounting claw 21c is set narrower than the thickness of the board 3 in order to obtain a holding force that does not loosen due to vibration of the vehicle in use. It is said that the attachment of 21 requires a considerable amount of force and is difficult to work. Especially, those who cannot handle this kind of socket holder such as a vehicle user will feel uncomfortable due to the excessive rigidity when replacing the light bulb. It caused problems.

[Means for solving problems]

The present invention, as a specific means for solving the above-mentioned problems that occur in the conventional socket holder, inserts the mounting claw into the insertion hole provided in the substrate and rotates the mounting claw and the seat surface. In the socket holder sandwiched between the substrates, the seat surface has a spiral shape whose diameter decreases toward the rotation direction when the socket holder is mounted, and the cross section along the circumferential direction is the rotation direction side when mounted. The socket holder is characterized in that a plurality of spiral convex portions, each of which is formed as a gentle slope and the slope on the rotation direction side at the time of disengagement is formed as a steep slope or a vertical sawtooth shape, are provided in a substantially radial shape. By providing it, it is possible to lightly rotate when inserting and to solve the above-mentioned conventional problems.

〔Example〕

Next, a detailed description will be given based on an embodiment showing the present invention.

In order to facilitate understanding, the same parts as those of the conventional example will be described with the same reference numerals, and the description of the overlapping parts will be partially omitted.

Reference numeral 1 in FIG. 1 denotes a socket holder according to the present invention. The bulb 2 can be inserted into the socket holder 1 as in the conventional example, but the seat surface 1
The plurality of spiral convex portions 1d are linearly provided on the substrate 3
Is sandwiched between the apex of the spiral convex portion 1d and the mounting claw 1c provided so as to overhang the cylindrical portion 1b described in the conventional example. Here, the spiral convex portion 1d
Will be described in more detail, the spiral convex portion 1d
Has a shape that reduces resistance to rotation in the mounting direction, that is, clockwise rotation, and increases resistance to rotation in the detaching direction, that is, counterclockwise rotation. In order to achieve this idea, according to the results of experiments and trials made by the inventor, a spiral shape whose diameter increases in the clockwise direction is preferable as a shape that meets this purpose, and further, as shown in FIG. ) Is formed as a gentle slope, and counterclockwise rotation (when disengaged) is formed as a steep slope or a vertical surface. Spiral-shaped convex portion 1 having a sawtooth shape
It is most effective to form d, and specifically, the rotational force in the detaching direction (counterclockwise) is increased by 50 to 100% with respect to the rotational force in the mounting direction (clockwise direction) described above. It was possible.

Since the substrate 3 is completely the same as that described in the conventional example, detailed description thereof is omitted here.

[Action]

By thus forming the spiral convex portion 1d on the seat surface 1a, the socket holder 1 of the present invention can greatly differ in the force required for rotation in the mounting direction and the detaching direction.

[Effect of device]

As described above, according to the present invention, the seat surface of the socket holder is provided with the spiral convex portion which is asymmetric with respect to the cross section along the circumferential direction and has a spiral shape whose diameter increases in the clockwise direction. The force required for rotation between the mounting direction and the dismounting direction is largely different. For example, when the holding force is the same as the conventional one, it can be mounted with about half that force, and can be used by unfamiliar users. It has an excellent effect that it can be attached without impairing the feeling. Further, since the present invention does not require any modification on the substrate side, the same effect can be obtained even by the socket holder already shipped to the market by adopting the socket holder of the present invention.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a socket holder according to the present invention, FIG. 2 is an enlarged perspective view showing an essential part of the same embodiment, and FIG. 3 is a perspective view showing a conventional example. 1 ... Socket holder 1a ... Seating surface, 1b ... Cylindrical part 1c ... Mounting claw, 1d ... Spiral convex part 2 ... Light bulb 3 ... Board

Claims (1)

[Scope of utility model registration request] 1. A socket holder in which a mounting claw is inserted into an insertion hole provided in a board and rotated to sandwich the mounting claw on the board by the mounting claw and a seat surface. The spiral shape of which the diameter decreases toward the rotation direction at the time of mounting, and the cross section along the circumferential direction is the slope on the rotation direction side at the time of mounting is formed as a gentle slope and the slope on the rotation direction side at the time of removal is a steep slope or A socket holder characterized in that a plurality of spiral convex portions formed in a vertical sawtooth shape are provided in a substantially radial shape.