JPH10184647A - Screw head cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screw head cover that can be easily fitted without using an adhesive and can ensure specified fitting strength without being influenced by the shape of a screw head. SOLUTION: In a screw head cover 10 fitted to a screw head 54a so as to cover the screw head 54a, a protruding part 12 that can be pressfitted into a driver hole 54b of the screw head 54a is formed at a contact face 10a with the screw head 54a, with its outline formed in a larger diameter than the screw head 54a. The screw head cover 10 can therefore be fitted easily without using an adhesive by pressfitting the protruding part 12 into the driver hole 54b of a screw 54 screwed into a screw fitting hole 52.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover for a screw head which is attached to the screw head and conceals the screw head.

[0002]

2. Description of the Related Art Conventionally, a head 54a of a screw 54 which is screwed into a screw mounting hole 52 provided in one member 50a and fastens one member 50a to another member 50b is hidden from the outside. As shown in FIGS. 12 and 13, a screw head cover 56 having substantially the same diameter as the screw mounting hole 52 is prepared, the screw head cover 56 is inserted into the screw mounting hole 52, and It was attached to the surface 54a by bonding with an adhesive 58. The screw 54 is a general term for an article having a thread, but in the present application, it refers to a fastening screw. The screw 54 has a head 54a having a circular planar shape,
A small screw having a slot and a cross hole for a screwdriver, a screw head 54a having the same shape as the small screw, and a tapping screw that is screwed into the prepared hole without screwing the prepared hole. In place of this, a bolt or the like having a hexagonal hole formed in the screw head 54a is included. Further, the shape of the head 54a itself is of a flat, round, pan, flat, round flat, round flat, or the like. As a material of the screw 54, low carbon steel is generally used, but when high strength is required, medium carbon steel, alloy steel or the like is used. In places where corrosion resistance is required, stainless steel, brass is used. , Aluminum, synthetic resin and the like are used.

[0003]

However, the above-mentioned conventional screw head cover has the following problems. In general, storage conditions and use conditions of the adhesive are strictly determined, and it takes time to store and use the adhesive. In addition, it takes a certain amount of time until the predetermined adhesive strength is fully exhibited, and during that time, care must be taken to prevent external force from being applied to the screw head cover, which is also a problem that the work surface is overturned. There is. In addition, it is easy to adhere when the surface shape of the screw head is a flat screw or flat head screw, but the round type has less contact with the cover and it is difficult to adhere,
There is also a problem that the mounting strength after bonding becomes low.

Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to easily mount the apparatus without using an adhesive and to provide a predetermined mounting strength without being affected by the shape of a screw head. It is an object of the present invention to provide a screw head cover that can secure the screw head.

[0005]

In order to achieve the above object, the present invention provides a screw head cover attached to a screw head for concealing the screw head, the outer shape of which is larger than the screw head. The screw head has a diameter and a contact portion with the screw head is formed with a protrusion that can be press-fit into a screw hole or a wrench hole of the screw head. According to this, it is possible to easily attach the screw head cover without using an adhesive by press-fitting the protrusion into the driver hole or the spanner hole.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a screw head cover according to the present invention will be described below in detail with reference to the accompanying drawings. The same components as those of the conventional example are denoted by the same reference numerals, and detailed description will be omitted. First, the configuration of the screw head cover 10 will be described with reference to FIG.
Since the screw mounting hole 52 is generally formed in a circular shape, the external shape of the screw head cover 10 is formed in a disk shape in accordance with the circular shape. The center of the contact surface (upper surface in FIG. 1) 10a with the screw head 54a is provided with the driver hole 54b in accordance with the position of the driver hole 54b of the screw head 54a.
The protrusion 12 that can be pressed into b is formed in a cylindrical shape as an example. Further, the outer diameter is formed to be slightly smaller than the diameter of the screw mounting hole 52 so that the screw head can be mounted in the screw mounting hole 52, and the screw head 54a needs to be hidden from the outside. It is formed to have a large diameter by the diameter of 54a.

Next, a procedure for attaching the screw head cover 10 will be described with reference to FIGS. First, the screw head cover is formed so that the outer edge of the screw 54 is screwed into the screw mounting hole 52 while the protrusion 12 is aligned with the driver hole 54 b formed in the head 54 a of the screw 54 screwed into the screw mounting hole 52. 10
Position. Secondly, a pressure is applied to the screw head cover 10 in the direction of the screw 54 so that the protrusion 12 is
Press into b. Thereby, the screw head cover 10 and the screw 54 are integrally connected, and the hiding of the screw head 54a from the outside is completed. When press-fitting, screw head cover 1
Workability is good if 0 is hit with a hammer or the like. Also,
The length of the protrusion 12 is slightly shorter than the depth of the screw hole 54b so that the contact surface 10a of the screw 10 is in close contact with the screw head 54a.
0 stabilizes. The thickness of the screw head cover 10 is determined by taking into account the depth of the screw mounting hole 52, and
The surface of the screw head cover 10 is set to be flush with the surface of the screw head cover 10.

The screw head cover 10 is made of a screw 54
Is made of a metal material or a synthetic resin material, and when the screw 54 is made of a synthetic resin material, it is preferable to use a synthetic resin material. The protrusion 12 is a hole 54b for a driver.
Is press-fitted while being elastically deformed (in the case of a synthetic resin material) or plastically deformed (in the case of a metal material), a large frictional force is applied between the outer surface of the protrusion 12 and the inner wall surface of the driver hole 54b after the press-fitting. Then, the screw head cover 10 is attached to the screw head 54a so as not to be easily removed.

The screw head cover 10 and the screw head 5
4a is the protrusion 12 and the driver hole 54 as described above.
b, the contact surface 10
A screw such as a round head screw (see FIG. 4) or a round head screw with a curved surface on the screw head 54a, which has a small contact area with a and tends to weaken the connection force with a conventional adhesive. As shown in FIG. 5, it can be securely mounted. As shown in FIG. 11, the contact surface 10a may be formed in a parabolic shape so as to match the shape of the screw head 54a.

In the above-described embodiment, the shape of the driver hole 54b is formed as a cross-shaped hole, and the protrusion 12 is press-fitted at the intersection. However, the shape of the driver hole 54b is shaped like a slot. In the case of the formed screw (see FIG. 6), the diameter of the projection 12 may be slightly larger than the width of the slot, and may be press-fitted into the center of the slot. Further, the shape of the protrusion 12 may be formed in a rectangular parallelepiped shape instead of the columnar shape, or the tip of the protrusion 12 may be formed in a tapered shape to facilitate press-fitting. It is better to make See FIG. In the case where the shape of the driver hole 54b is a slot shape as shown in FIG. 6, a plurality of protrusions 12 are provided on the contact surface 10a of the screw head cover 10 with the screw 54 as shown in FIG. (Two in this embodiment) projecting on a straight line and press-fitting a plurality of projections 12 into the slot will further increase the coupling force, and the screw head cover 10 will be 54
Can be effectively prevented from rotating.

Further, even in the case of a hexagon socket head bolt 14 having a hexagonal hole 14b for a spanner provided in a screw head 14a as shown in FIG. 9 or a hexagon socket head set screw 16 shown in FIG. Similarly, the shape of the projection 12 is
The screw head cover 10 can be attached by forming it into a shape that can be press-fitted into the inside 4b, for example, a cylindrical shape having a tapered tip.

Although the preferred embodiments of the present invention have been described in various ways, the present invention is not limited to the above-described embodiments. It is formed in a flat disk shape according to the shape of the hole, but if the shape of the screw mounting hole is square, polygon, elliptical, etc., it will also be square according to the shape of the screw mounting hole,
The shape may be a polygon or an ellipse. In addition, a material that simulates the surface pattern and color of the member with the screw mounting hole formed on the surface of the screw head cover (for example, the same material as the member) is thinly formed and attached to decorate the surface. Of course, many modifications may be made without departing from the spirit of the present invention, such as forming a curved surface such as a dome shape.

[0013]

When the screw head cover according to the present invention is used, the screw head has a screw hole or a spanner hole in the screw hole.
By press-fitting the protrusion formed on the contact surface with the screw head, the screw head cover can be easily attached to the screw head without using an adhesive, thus improving workability. . Further, since the projections are connected by the frictional force between the holes for the driver or the holes for the wrench, a predetermined mounting strength can be secured without being affected by the surface shape of the screw head.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a screw head cover according to the present invention.

FIG. 2 is an explanatory diagram showing a method of attaching a screw head cover of FIG. 1 to a screw head.

FIG. 3 is a cross-sectional view when a screw head cover is attached to the screw attachment hole in FIG. 2;

FIG. 4 is a perspective view showing an outer shape of a round cross-threaded screw (tapping screw).

5 is a cross-sectional view of a main part showing a state in which a screw head cover is attached to the screw of FIG. 4;

FIG. 6 is a perspective view showing an outer shape of a flathead screw in which a driver hole is formed in a slot shape;

FIG. 7 is a front view of a screw head cover in which a protrusion is formed in a rectangular parallelepiped and a distal end portion is formed in a tapered shape.

FIG. 8 is a view of a screw head cover formed with two protrusions as viewed from the contact surface side thereof.

FIG. 9 is a perspective view showing the outer shape of a hexagon socket head cap screw.

FIG. 10 is a perspective view showing an outer shape of a hexagon socket set screw.

FIG. 11 is a sectional view showing a screw head cover having a contact surface formed in a parabolic shape.

FIG. 12 is an explanatory view showing a method of attaching a conventional screw head cover.

FIG. 13 is a sectional view showing a state where a screw head cover is attached in FIG. 12;

[Explanation of symbols]

 Reference Signs List 10 Screw head cover 10a Contact surface 12 Projection 52 Screw mounting hole 54 Screw 54a Screw head 54b Driver hole

Claims (1)

[Claims] 1. A screw head cover attached to a screw head for concealing the screw head, wherein the outer shape is formed to have a larger diameter than the screw head and a contact surface with the screw head is provided. A cover for a screw head, wherein a protrusion that can be press-fitted is formed in a screw hole or a wrench hole of the screw head.