JPH0960632A - Resin cap for stopping member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin cap for a stopping member whose furnishing opera tion can be accomplished with weak strength even though constitution is simple and at the same time whose furnishing force can be obtained large. SOLUTION: A resin cap 1 whose section is of an approximately recessed shape and which is furnished to the polygonal head part 11 of a stopping member 10 by pressure entering, possesses at its inner surcumsfunce part plural elastic claws 3 which are projectingly formed at positions that divide the inner periphery 2 approximately equally, and can be made to fall down elastically in the same direction in the process of being furnished to the polygonal head part 11 while being rotated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin cap mounted on the head of a stopper member.

[0002]

2. Description of the Related Art This type of cap is used in the actual construction of Shokai 59-30.
As disclosed in Japanese Patent No. 918, etc., it is attached to the head of a fastening member such as a bolt or a set screw, and is used for decoration or protection by covering the head. Although this cap has different applications, it is generally required that the cap can be easily attached to the head and that the cap does not come off accidentally even when vibration is applied. In the structure described in the above publication, the cap and the stopper member are provided with a fitting protrusion on one side and a fitting recess on the other side so that the cap does not come off accidentally when fitted together. It is the one.

[0003]

In the above conventional structure,
Since the fitting convex portion and the concave portion must be provided not only on the cap side but also on the head portion of the stopper member, the stopper member is a dedicated one as well as the cap, and a commercially available one cannot be used. In addition, in the fitting structure of the fitting convex portion and the concave portion, the larger the fitting degree, the more difficult it is to come off, but the mounting work on the head requires a strong force, resulting in poor workability. Such a problem becomes a problem particularly when the caps are mounted on a large number of stopper members or when it is difficult to mount the caps due to space restrictions.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above problems, and to provide a resin cap which has a simple structure but can be mounted and operated with a weak force, and a large mounting force can be obtained.

[0005]

In order to achieve the above object, the present invention provides a resin cap, which has a substantially concave cross section and is mounted by press-fitting into a polygonal head of a stop member (bolt or the like). It has a plurality of elastic claws formed on the inner peripheral portion so as to project at positions substantially equally dividing the inner peripheral portion and capable of being knocked down in the same direction during the process of mounting on the polygonal head while rotating. Is the main part.

According to the above resin cap structure, a plurality of elastic claws provided on the inner circumference are the same at each corner of the head by rotating and mounting the polygonal head of the stopper member. While it is pushed down in the direction, it has a strong retaining effect and regulates the reversal of the resin cap even if an external force such as vibration is applied.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a resin cap according to an embodiment of the present invention, and FIG.
4A is a cross section taken along line AA of FIG. 1, and FIG.

In the figure, the resin cap 1 of the present invention is
It is an injection-molded body using a resin such as polyacetal, and is different from a normal resin cap in that it has a plurality of elastic claws 3 integrally formed on the inner circumference 2.

More specifically, the resin cap 1 is formed in a substantially concave cross section or a bottomed cylindrical shape having a depth corresponding to the height of the hexagonal head portion 11 of the bolt 10, and has an inner diameter L as shown in FIG. ，
As shown in (b), the hexagonal head portion 11 of the bolt 10 is set to a size capable of being press-fitted. The plurality of elastic claws 3 have a circular saw-tooth shape as a whole, the base portion is wide, and is tapered toward the tip. Also, each elastic claw 3
Are protruded at a predetermined inclination angle at positions that divide the inner circumference 2 into substantially equal parts, and are inclined in the same direction.

Here, in the elastic claw 3 of this embodiment, six pieces are formed corresponding to the head 11 of the bolt 10, and each end face 11b (corner 11a and corner 11a of the hexagonal head 11) is formed. It is set so that they can be pressed against each other. However, the number of the elastic claws 3 does not necessarily correspond to the head shape of the bolt 10, and, for example, 2 to 5 may be arbitrarily provided. Further, although the bolt 10 has shown a typical one having the head portion 11, the shaft portion 12 and the screw portion 13, it is merely an example of a fastening member, and the polygonal head portion 11 such as a quadrangle or a hexagon is used. Others may be used as long as they have them.

Hereinafter, the resin cap 1 will be further described with an example of mounting. In FIG. 3 and FIG. 4, a member 16 such as a molded ceiling or a garnish is attached to the bolt 10 with respect to a plate member 15 such as a panel.
Also, an example is shown in which the resin cap 1 is mounted on the head 11 of the bolt 10 that is fixed by the nut 14 and projects on the surface of the member 8.

The resin cap 1 is placed on the head 11 of the bolt 10 as shown in FIG.
The head 11 is press-fitted and mounted while being positioned so as to fit inside and rotating in the direction of the arrow. In this operation process, as shown in FIG. 1B, the resin cap 1 has an inner circumference 2 formed by contacting the elastic claws 3 with the corners 11a of the head 11.
It is pushed down to the side in the same direction, and locked when each corner 11a is located between the elastic claws 3 and 3.

In the locking structure of the resin cap 1 described above, in addition to the corners 11a being in pressure contact with the inner circumference 2, the elastic claws 3 are strongly pressed against the end surface 11b of the head 11 in a state of being elastic. As a result, a strong locking force in the retaining direction can be obtained.
Further, since each elastic claw 3 is inclined in a certain direction and is in pressure contact with the end face 11b of the adjacent corner portion 11a,
The rotation of the resin cap 1 can be reliably prevented.

Therefore, the resin cap 1 of the present invention is
For example, the elastic claws 3 are inclined in the same direction with respect to the structure in which the ribs for pressure contact are simply protruded on the inner circumference, and the respective corners 11a of the head 11 are pushed down in the same direction to perform a retaining action. Therefore, it can be mounted with a weak force. Further, once mounted, the resin cap 1 is reliably prevented from rotating, so that it is structurally difficult to come off even if an external force such as vibration is applied.

The resin cap 1 of the present invention is not limited to the above embodiment. For example, two to four elastic claws 3 of the resin cap 1 are formed when the head 11 of the bolt 10 is a quadrangle, and from the viewpoint of convenience, the direction of rotation is set to the outer surface of the resin cap 1 as shown by the imaginary line in FIG. Needless to say, it is more preferable to form by engraving.

[0016]

As described above, according to the resin cap structure of the present invention, a plurality of elastic claws provided on the inner periphery of the stopper member can be mounted by rotating and attaching the polygonal head of the stopper member. While being pushed down in the same direction at each corner of the head, the head has a strong retaining action and the reversal of the resin cap can be restricted. In addition, the resin cap has a simple structure since it can be formed by molding with a plurality of elastic claws and does not require any change on the stopper member side.
Moreover, since the mounting operation can be performed with a weak force and a larger mounting force can be obtained, the mounting workability and reliability can be improved.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a form example of a resin cap according to the present invention.

FIG. 2 is an external view showing a relationship between the resin cap and a bolt which is a stopper member.

FIG. 3 is a diagram for explaining a mounting operation of the resin cap.

FIG. 4 is a view showing a state in which the resin cap is attached.

[Explanation of symbols]

 1 Resin Cap 2 Inner Circumference 3 Elastic Claw 10 Bolt (Fixing Member) 11 Head

Claims (3)

[Claims] 1. A resin cap having a substantially concave cross-section and mounted by press-fitting into a polygonal head portion of a stopper member, wherein the resin cap is formed so as to project at a position in the inner peripheral portion of the resin cap that substantially divides the inner periphery. And a plurality of elastic claws that can be knocked down in the same direction in the process of being mounted on the polygonal head while rotating. 2. The resin cap for a stop member according to claim 1, wherein the plurality of elastic claws each have a sawtooth shape inclined in the same direction. 3. The resin cap for a stopper according to claim 1, wherein the head of the stopper has a hexagonal shape, and six elastic claws of the cap are formed.