JPS627823Y2 - - Google Patents

Description

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

Conventional hinges that connect two parts so that they can be opened and closed, but can be stopped at any opening angle, include those that have the ends of the two metal plate parts bent into a cylindrical shape and pass through the shaft; There are also types in which an elastic body such as a spring washer or rubber is interposed between the opposing surfaces of the two parts, and types in which a spring pin, which is a metal plate bent into a cylindrical shape, is inserted into the shaft hole. In either case, the process of bending the metal plate into a cylindrical shape is difficult and the finish cannot be finished uniformly and neatly, making the opening/closing torque unstable, and since it is made of metal, it may damage (so-called galling) the other component, or Alternatively, there are inconveniences such as the shaft being damaged or rusted by the spring washer. Furthermore, when rubber or the like is used, there are various disadvantages such as durability problems when a large torque is required.

The present invention eliminates the above drawbacks. Since a plastic molded product is used as a sliding body, it is easy to set a constant torque because the shape is stabilized by molding, there is no rust or galling, and the two parts can be separated easily. The present invention provides a hinge that has good positional accuracy of the center of swing, has a simple structure, and is easy to assemble and disassemble.

An example of the present invention will be described.

In FIGS. 1 and 2, 1 and 2 are two parts connected to each other so as to be swingable, and a swinging center line is formed on both sides of a bearing part 3 protruding from one end of one part 1. Blind sliding holes 4a and 4b with axis centers are provided back to back. The other component 2 has sliding holes 5a and 5b formed opposite to the sliding holes 4a and 4b. 6 is a sliding body made of synthetic resin.

The sliding body 6 has a sliding hole 5 as shown in the third and fourth figures.
A plurality of elastic pieces 8a, 8 extending in the axial direction from the outer periphery of the circular base 7 having a size that can be fitted to the base portions 8a, 5b.
b, 9a, and 9b are formed. Elastic pieces 8a, 8
b and the elastic pieces 9a and 9b have different lengths,
They are arranged alternately and adjacent to each other with the slit 10 in between. Protrusions 11a and 11b are formed on the outer peripheral surfaces of the tips of the short elastic pieces 8a and 8b. In this example, two sets of long and short elastic pieces are formed, but three or more sets of each may be provided. Each elastic piece has elasticity in the outward direction by being bent in the axial direction.

A hole 12 is bored in the base 7 to facilitate taking out the sliding body 6.

To assemble the hinge of the present invention, the sliding bodies 4a, 4b of component 1 and the sliding holes 5a, 5b of component 2 are positioned facing each other, and the sliding body 6 is moved between the elastic pieces 8a, 8b, 9a,
The sliding hole 5 is bent while bending the tip of 9b in the axial direction.
Press fit into a and 5b. The long elastic pieces 9a, 9b that have passed through the sliding holes 5a, 5b further pass through the sliding holes 4a, 5b.
Press fit into 4b. When the short elastic pieces 8a, 8b pass through the slide holes 5a, 5b, they expand outward due to their own spring force, come into elastic contact with the inner surface of the slide hole, and their protrusions 11a, 11b press against the slide hole 5.
It is locked to the inner edges of a and 5b to prevent it from coming off.

Also, at this time, the long elastic pieces 9a and 9b are connected to the sliding hole 4.
It comes into elastic contact with the inner surfaces of a and 4b. By making the sliding holes 4a and 4b blind, the press-fitting depth is regulated so that the sliding body 6 does not enter too far.

Therefore, when opening and closing parts 1 and 2, the outer peripheral surfaces of the elastic pieces 8a and 8b of the sliding body 6 and the sliding hole 5
a, 5b, and the elastic pieces 9a, 9b.
It slides between the outer peripheral surface of the slide hole 4a and the inner surface of the sliding holes 4a and 4b. After swinging by the desired center angle,
The outward spring force of each elastic piece keeps it in elastic contact with each sliding surface, resulting in stable stopping. To take out the sliding body 6 , insert a pin with a bent tip into the hole 12.
By inserting and pulling the elastic pieces 8a, 8b
Just bend it inward and pull it out.

Note that this slip torque is due to the elastic piece 8 of the sliding body 6 .
Desired values can be stably obtained by appropriately setting the thicknesses and lengths of a, 8b, 9a, and 9b. In addition, by setting the elasticity of one of the long and short elastic pieces 8a, 8b or 9a, 9b to be stiffer than the other, it can be fixed to one part and only slide between it and the other part. You can.

As described above, according to the present invention, since a molded plastic product is used as the sliding body and has a long elastic piece, it is easy to set the slip torque and it is stable, and there is no rust or galling. Also, since the outer peripheral surfaces of the plurality of elastic pieces touch the sliding surface,
Sliding does not shift to one side, so a stable sliding condition with good positional accuracy of the swing centers of the two parts can be obtained. A protrusion is provided at the tip of the short elastic piece to prevent it from escaping. Moreover, since the sliding hole into which the long elastic piece is press-fitted is a blind hole, the press-fitting depth of the sliding body can be made uniform. Moreover, it has many excellent effects such as a simple structure and easy assembly and disassembly.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a sectional view taken along the line of FIG. 1, and FIG.
The figure is an enlarged front view of the sliding body, and Figure 4 is Figure 3-
FIG. 1...One part, 2...The other part, 3...
Bearing portion, 4a, 4b, 5a, 5b...sliding hole, 6
...Sliding body, 7...Base, 8a, 8b...Short elastic pieces, 9a, 9b...Long elastic pieces, 10...Slit, 11a, 11b...Protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) A synthetic resin sliding body is formed in which a plurality of sets of long and short elastic pieces extending in the axial direction from the outer periphery of a circular base are arranged alternately with slits in between. A sliding hole is provided at one end of one of the parts to be swingably connected, and the tip of the long elastic piece of the sliding body is compressively fitted into this hole, and the sliding hole is provided in the other part. A hinge characterized in that a sliding hole is provided opposite the hole, and a short elastic piece of the sliding body is compression-fitted into the sliding hole. (2) In claim 1 of the utility model registration claim, a protrusion is provided on the outer peripheral surface of the tip of the short elastic piece,
A hinge characterized in that the protrusion engages with the inner edge of the sliding hole of the other component. (3) A hinge according to claim 1 of the utility model registration, characterized in that blind sliding holes are formed back to back on both sides of a bearing part protruding from one end of one component.