JPH0230617Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a hinge.

[Prior Art] Conventionally, a hinge has two parts that are connected to each other so that they can be opened and closed, but in order to be able to stop the hinge at any opening angle, for example, the ends of the two metal parts can be connected to a cylindrical part. In this case, a shaft is passed through the cylindrical part, a disc-shaped metal spring or an elastic body such as rubber is interposed between the opposing surfaces of the two parts, and a cylindrical part. Some have a spring made of a metal plate bent into a cylindrical shape inserted into it.

[Problem to be solved]

However, in either configuration, it is difficult to bend the metal plate into a cylindrical shape, and because the finish is not uniform and clean, the opening/closing torque becomes unstable and fine adjustment of the torque is difficult. There was a tingling inconvenience. Furthermore, if rubber or the like is used, there is a problem in durability when a large torque is required.

Therefore, an object of the present invention is to provide a hinge that can stably obtain a desired slip torque with a simple configuration.

[Means to solve the problem]

The feature of the present invention is that one part that is swingably connected has a swinging center cylinder, and the other part has cylindrical parts located opposite to each other at both ends of the swinging center cylinder. The elastic friction body that fits into the cylindrical part has a cylindrical wall part and a mounting hole, and the fixing screw has a cylindrical wall part and a mounting hole, and the fixing screw passes through the mounting hole of the friction body and has a cylindrical wall part and a mounting hole. A threaded part is screwed into the hollow part of the center cylinder, and this threaded part is screwed into the swinging center cylinder to press the end face of the cylindrical wall part of the friction body, thereby causing the cylindrical wall part to form the cylindrical shape. The flange is pressed against the inner surface of the flange.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, a swing center cylinder 3 is formed at one end of one of the two parts 1 and 2 that are swingably connected. A female thread is formed on the inner wall of the hollow part of the swing center cylinder 3. Further, in the other part 2, cylindrical portions 4, 4 are integrally formed in a positional relationship opposite to both end surfaces of the swing center cylinder 3.

Friction bodies 5, 5 made of elastic synthetic resin are loosely fitted into the cylindrical parts 4, 4. The friction bodies 5, 5 are compressed by the fixing screw 6 and are expanded.
It is adapted to come into pressure contact with the cylindrical parts 4, 4.

The specific shape of the friction body 5 is as shown in the third diagram.
A mounting hole 8 facing the swinging center cylinder 3 is formed in the center of the bottom part 7 of the component 1, which is in contact with the peripheral surface of the swinging center cylinder 3. From the periphery of the bottom 7 to the cylindrical wall 9
is formed. The cylindrical wall portion 9 has an outer diameter smaller than the inner diameter of the cylindrical portion 4.

The specific shape of the fixing screw 6 is such that it is screwed into one end of the main body 10 through a mounting hole 8 (FIG. 3) and into a female thread (FIG. 2) of the swing center cylinder 3, as shown in FIG. A threaded portion 11 is formed. Furthermore, the main body 10
A flange portion 12 that can come into contact with the end surface 9a of the cylindrical wall portion 9 is formed at the other end.

The depth a (FIG. 3) of the cylindrical wall portion 9 of the friction body 5 and the length a' (FIG. 4) of the main body 10 of the fixing screw 6 are as follows.
It is set as a>a', and the difference a-a' between the two becomes the maximum compression amount of the cylindrical wall portion 9. Further, the inner diameter b of the cylindrical wall portion 9 (FIG. 3) and the outer diameter b' of the main body 10 (FIG. 4) are set such that b>b'.

For assembly, the friction body 5 is fitted into the hollow part within the cylindrical part 4, and the swing center cylinder 3 and the cylindrical part 4 are placed in opposing positions. Then, the threaded portion 11 of the fixing screw 6 is passed through the mounting hole 8 of the friction body 5, and is screwed into the female thread of the swing center cylinder 3. At this time, the collar 12 pushes the end surface 9a of the cylindrical wall 9, so the cylindrical wall 9 is compressed in its axial direction, its outer shape expands, and this outer surface expands the inner periphery of the cylindrical wall 4. press against the surface.

Since the bottom part 7 of the friction body 5 is held between the peripheral surface of the swing center cylinder 3 and the main body 10, the cylindrical part 4 of the component 2 and the fixing screw 6 are in a crimped state. Therefore, when parts 1 and 2 swing, the cylindrical wall part 9
There is slippage between the outer surface of the tube and the hollow part of the cylindrical body 4. The slip torque between these two is determined by the fixing screw 6
This can be changed by changing the depth of connection between the oscillating center cylinder 3 and the oscillating center cylinder 3 and finely adjusting the amount of compression of the friction body 5 in the axial direction.

FIG. 5 shows another example of the friction body, in which the friction body 15 has an end surface 19a of a cylindrical wall portion 19 formed into an outwardly inclined tapered surface. Further, a cut groove 20 is formed in the axial direction of the cylindrical wall portion 19. End face 19
Since a is a tapered surface, the flange portion 12 of the fixing screw 6 shown in FIG. 4 has a tapered end surface 19a.
When pressed, this tapered surface is brought into close contact with the inner surface of the collar portion 12, so that the cylindrical wall portion 19 is easily bent so that its outer shape expands.

FIG. 6 shows another example of the fixing screw. In this fixing screw 16, the inner surface of the flange portion 12a that is in contact with the end surface 9a of the cylindrical wall portion 9 shown in FIG. It has been formed. Therefore, similarly to the example shown in the fifth figure, the end surface 9a of the cylindrical wall portion 9 shown in the third figure
is guided so as to be in close contact with the tapered surface of the flange portion 12a, and the cylindrical wall portion 9 is easily bent so that its outer diameter expands.

Figure 7 shows yet another example of the friction body.
At the bottom 27 of the friction body 25, a rotation stopper 27a that fits into the swing center cylinder 23 of the component 21 is formed extending in the axial direction, and as shown in FIG. The protrusion 27b is formed to have a non-circular shape. A mounting hole 28 is provided in the center. The swing center tube 23 has a rotation prevention hole 23a into which a rotation prevention portion 27a can be fitted. The fixing screw 26 is passed through the mounting hole 28 and screwed into the swing center cylinder 23, and the amount of compression of the cylindrical wall portion 29 is adjusted by finely adjusting the screw tightening amount. The slip torque between the outer surface and the inner surface of the cylindrical portion 24 is adjusted. Since the friction body 25 and the part 21 cannot rotate due to the rotation stopper 27a, even if the slip torque between the cylindrical wall part 29 and the cylindrical part 24 becomes very large, the friction body 25 will not rotate when the part 21 is rotated.
1, and the fixing screw 26 will not loosen due to this.

[Effects] According to the present invention, it is easy to process because it has a simple shape, and since the shape is constant through molding, stable and constant torque can be obtained, and the slip torque can be adjusted, and it is small. Despite this, a large slip torque can be obtained. It is also easy to assemble and disassemble.

[Brief explanation of drawings]

Figure 1 is a front view of the main parts, Figure 2 is Figure 1-
3 is an enlarged sectional view of the friction body, FIG. 4 is an enlarged front view of the fixing screw, FIG. 5 is an enlarged sectional view showing another example of the friction body, and FIG. 6 is an enlarged sectional view of the fixing screw. FIG. 7 is an enlarged sectional view of the main part using another example of the friction body, and FIG.
FIG. 3 is a left side view of the friction body shown in the figure. 1, 21...One part, 2...The other part,
3, 23... Swing center cylinder, 4, 24... Cylindrical part,
5, 15, 25... friction body, 6, 16, 26...
Fixing screw, 8, 28...Mounting hole, 9, 19, 2
9... Cylindrical wall portion, 9a, 19a... End surface of the cylindrical wall portion, 11... Threaded portion, 12, 12a... Flange portion,
23a... Detent hole, 27a... Detent portion.

Claims (1)

[Claims for Utility Model Registration] (1) A swinging center cylinder formed at one end of one part that is swingably connected, and a swinging center cylinder formed in the other part and positioned opposite to both ends of the swinging center cylinder. an elastic friction body having a cylindrical part that fits into the cylindrical part, a cylindrical wall part that fits into the cylindrical part, and a mounting hole that faces the hollow part of the swing center cylinder; a threaded portion that passes through the mounting hole of the friction body and is screwed into the hollow portion of the swinging center cylinder; and the cylindrical wall of the friction body that is screwed into the swinging center cylinder by this threaded portion. A hinge comprising a fixing screw having a collar portion that presses the end face of the cylindrical wall portion and presses the cylindrical wall portion against the inner surface of the cylindrical portion. (2) Claim (1) of the utility model registration is characterized in that either the end surface of the cylindrical wall or the inner surface of the collar of the fixing screw is formed into an outwardly sloping tapered surface. hinge. (3) Claim (1) of the utility model registration claim is characterized in that the friction body is integrally formed with a detent portion that fits into a detent hole formed in the swing center cylinder. Hinge.