CN2431434Y - Decorative screw - Google Patents

Abstract

The utility model discloses a decorative screw nail. The utility model is composed of a screw nail (1), a screw-thread sleeve (2) and a decorative cap (3). The screw-thread sleeve (2) is provided with screw threads (21) which are matched with screw threads (11) on the screw nail (1). The external surface of the screw-thread sleeve (2) is also provided with screw threads (22). The concave cylindrical surface (36) of the decorative cap (3) is provided with screw threads (33) which are matched with the screw threads (22) of the screw-thread sleeve (2). Compared with that the screw nail is screwed in by a screw driver, the utility model changes force direction and saves labor in the process of installation. Because a force arm is enlarged, the screw nail can be screwed in by less force. The screw nail with the decorative cap is very beautiful.

Description

Decorative screw

The utility model relates to the improvement of the structure of the vanity mirror set screw that uses in a kind of people's daily life.

In daily life, fixing of vanity mirror generally adopted tapping screw, the hole of passing vanity mirror directly is fixed on the wall, and screw does not have the decoration of any structure, on the vanity mirror with this screw bathroom, one comes installation rate slow, and two influence attractive in appearancely, and influence is used.Before the utility model design is finished, not seeing the screw identical with the utility model structure as yet uses in daily life, not seeing the screw identical with the utility model structure has sale on market, it is on the books in the literature also not see the screw identical with the utility model structure.

The purpose of this utility model is to provide a kind of Decorative screw, and one can improve installation rate, and two is very attractive in appearance after installing.

For achieving the above object, the utility model adopts following technical proposals:

Decorative screw, by screw, thread bush and decorating cap are formed, it is cylindric that thread bush is, there is circular hole at center at cylinder, have on the circular hole with screw on the screw thread of threads engaged, screw thread is connected with screw thread on the thread bush circular hole, there is the spherical shape depression that matches with screw head on the top of thread bush, it is cylindric that also there are screw thread, decorating cap in the thread bush outside, and the one end is the spherical shape projection, the other end is a cylindrical recess, its degree of depth is slightly larger than the height of thread bush, on the cylndrical surface of depression the screw thread that matches with thread bush is arranged, and the screw thread on the decorating cap cylndrical surface is connected with the screw thread of thread bush outside.

Screw is screwed into thread bush, makes the spherical shape depression of screw head, then decorating cap is screwed into thread bush, just finished installation of the present utility model near the top of thread bush.With the utility model fixedly vanity mirror, word plaque etc.

The utility model has following effect and good effect:

Because the utility model is formed by being threaded by screw, thread bush and decorating cap, in the process of installing, with being screwed into screw with screw-driver relatively, changed the direction of exerting oneself, laborsaving during installation, simultaneously, because the diameter of decorating cap is much larger than the diameter of screw head, the arm of force strengthens, so just screw can be screwed into less power, this screw that has a decorating cap is very attractive in appearance.

Below in conjunction with accompanying drawing structure of the present utility model is described in further detail:

Fig. 1 is that outward appearance master of the present utility model looks schematic representation;

Fig. 2 is that A-A among Fig. 1 is to sectional view.

In the drawings, the 1st, screw, the 11st, screw thread, the 14th, screw head, the 2nd, thread bush, the 20th, circular hole, the 21st, screw thread, the 22nd, screw thread, the 23rd, depression, the 3rd, decorating cap, the 33rd, screw thread, the 31st, projection, the 36th, cylindrical recess.

Decorative screw, by screw 1, thread bush 2 and decorating cap 3 are formed, thread bush 2 is cylindric, at the center of cylinder circular hole 20 is arranged, the screw thread 21 that matches with screw thread 11 on the screw 1 is being arranged on the circular hole 20, screw thread 11 is connected with screw thread 21 on thread bush 2 circular holes, there is the spherical shape depression 23 that matches with screw head 14 on the top of thread bush 2, also there is screw thread 22 thread bush 2 outsides, decorating cap 3 is cylindric, the one end is a spherical shape projection 31, the other end is a cylindrical recess 36, its degree of depth is slightly larger than the height of thread bush, on the cylndrical surface of depression 36 screw thread 33 that matches with the screw thread 22 of thread bush 2 is arranged, and the screw thread 33 on decorating cap 3 cylndrical surface is connected with the screw thread 22 of thread bush 2 outsides.

Claims (1)

1. Decorative screw, comprise screw (1), it is characterized in that it also comprises thread bush (2) and decorating cap (3), thread bush (2) is cylindric, circular hole (20) is arranged at the center of cylinder, the screw thread (21) that matches with screw thread (11) on the screw (1) is being arranged on the circular hole (20), screw thread (11) is connected with screw thread (21) on thread bush (2) circular hole, there is the spherical shape depression (23) that matches with screw head (14) on the top of thread bush (2), also there is screw thread (22) thread bush (2) outside, decorating cap (3) is cylindric, the one end is spherical shape projection (31), the other end is cylindrical recess (36), its degree of depth is slightly larger than the height of thread bush (2), on the cylndrical surface of depression (36) screw thread (33) that matches with the screw thread (22) of thread bush (2) is arranged, the screw thread (33) on decorating cap (3) cylndrical surface is connected with the screw thread (22) of thread bush (2) outside.

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