JP2003262214A - Hinge mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge mechanism which is simple is structure, and capable of being manufactured at low cost. <P>SOLUTION: A part of one 1 of a pair of revolving members is shaft-drawn to make a hollow pivot 1a, a top face 1a' of the pivot is formed in a recess, the other 2 of the pair of the revolving members is rotatably inserted into the pivot 1a, and at least one or more flat washers 3, 4 and at least one or more flat washers 5, 6 are inserted. The pair of the revolving members is relatively rotatably caulked via the flat washer and the conical washer by crushing a top face outer periphery or the pivot 1a. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has an object of connecting a base to a display of a liquid crystal television, a notebook computer, or the like, and connecting the lid to the main body in other OA equipment so that the lid can be maintained at an arbitrary open angle position. The present invention relates to a hinge mechanism that can be preferably used.

[0002]

2. Description of the Related Art A hinge mechanism has been frequently used as one of the mechanical elements of equipment for a long time, and various structures have been proposed and put on the market, but the basic structure has an independent hinge shaft. In general, a pair of members to be relatively rotated (a substrate and a cover plate, etc.) are pivotally attached to this. Such a hinge mechanism is a type in which the pair of rotating members smoothly rotates depending on the application, and a type in which the rotating members do not rotate indefinitely but rotate when a rotational force of a predetermined value or more is applied. There is.

[0003]

By the way, in the latter type, when a pair of members to be relatively rotated are pivotally attached to the hinge shaft, a plurality of flat washers and a plurality of flat washers are provided between the pair of members. A spring washer or the like is interposed so as to generate a rotational frictional resistance of a predetermined size between the pair of members, or the hinge shaft is processed into a specific shape to achieve the purpose through the cooperation with the spring means. It is configured to achieve it. And this kind of hinge mechanism, depending on the application,
Sizes of various sizes are required, but particularly in the case of small size, there is a problem that not only the processing of the component parts is difficult, but also the assembly is troublesome and the cost is increased.

The present invention has been made in view of the problems of the prior art as described above, and an object of the present invention is to provide a hinge mechanism of the latter type which has a simple structure and can be manufactured at low cost. To provide.

[0005]

In order to achieve the above object, the hinge mechanism according to the present invention is such that a part of one of a pair of rotating members is subjected to an axial drawing process to form a hollow support shaft and the support shaft of the support shaft is The top surface is shaped to be concave, the other of the pair of rotating members is rotatably fitted to the support shaft, and at least one flat washer and at least one spring washer are fitted. And the outer edge of the top surface of the support shaft is crushed so that the pair of rotating members are caulked relative to each other via the flat washer and the spring washer.

According to the present invention, the fitting hole portion of the other rotating member to the support shaft is burred, and the spring washer is press-fitted to the support shaft.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described based on illustrated examples. 1 is a perspective view showing an example of a hinge device incorporating a hinge mechanism according to the present invention, FIG.
1 is a sectional view taken along line II-II of FIG. 1, FIG. 3 is a perspective view of one of the rotating members shown in FIG. 2, FIG. 4 is a perspective view of the spring washer shown in FIG. 2 in a normal state, and FIG. FIG. 3 is a cross-sectional view similar to FIG. 2 for explaining the assembling process of the hinge mechanism according to FIG.

In the figure, reference numeral 1 is used as a rotating side in this embodiment in which a hollow support shaft 1a is formed by axial drawing such that the top surface 1a 'is concave in a direction perpendicular to the surface thereof. One of the pair of rotating members (hereinafter, for convenience of explanation,
2 is a flat support washer 3 on the hollow support shaft 1a.
In this embodiment, the fitting portion 2a that is rotatably fitted through is burring processed (the inner edge of the fitting hole is bent to stand up to a predetermined length). The other of the moving members (hereinafter, referred to as a fixing member for convenience of description), 4 is a flat washer fitted to the fitting portion 2a of the fixing member 2, and 5 is a spring washer fitted to the hollow support shaft 1a by press fitting. 6 is a disc spring as a spring washer that is press-fitted onto the hollow support shaft 1a so as to be superposed on the disc spring 5, and 7 is a fixing member that is fitted onto the hollow support shaft 1a when the hinge mechanism is assembled. 2, a pressing washer for preventing the disc springs 5 and 6 and the like from coming out of the hollow support shaft 1a.

Next, the assembly of the illustrated hinge device will be described. First, a rotary machine 1 and a fixed member 2 having a predetermined size and shape are mass-produced using a press machine, and necessary parts such as a flat washer and a spring washer are prepared.
Then, the flat washer 3 is attached to the hollow support shaft 1a of the rotating member 1.
Then, with the flat washer 4 fitted on the fitting portion 2a of the fixing member 2, the fixing member 2 is fitted on the hollow support shaft 1a. In this case, the thickness of the flat washer 4 is
The surface (the left surface in the state shown in the figure) is selected so as to protrude from the upstanding top surface 2a 'of the fitting portion 2a. Next, the disc springs 5 and 6 are overlapped with each other and the bulging portions thereof are directed outward (to the left in FIG. 5) and press-fitted onto the hollow support shaft 1a. After fitting, the hollow support shaft 1a is mounted by using a well-known jig (not shown).
The outer edge of the top of the is tapped in the direction of the arrow in FIG. 5 to extend outward in the radial direction, and the press washer 7 is caulked to the hollow support shaft 1a. At this time, the disc springs 5 and 6 are deformed into a flat plate shape (see FIG. 2) and a stress is generated, and the stress causes the fixing member 2 to be pressed and clamped via the flat washers 3 and 4.
The rotary member 1 and the fixed member 2 are assembled so that they cannot rotate relative to each other unless a predetermined torque or more is applied. It goes without saying that the predetermined rotational force in this case is determined by appropriately selecting the spring constants of the disc springs 5 and 6.

The hinge mechanism according to the present invention is assembled and configured as described above, but the top surface 1a 'of the hollow support shaft 1a is formed.
By making the concave surface (dish-shaped), it is possible to effectively prevent buckling of the hollow support shaft 1a during caulking of the throttle shaft.
Further, since the disc springs 5 and 6 are press-fitted into the fitting portion 2a, the disc springs 5 and 6 are always rotated integrally with the rotation member 1 when the rotation member 1 and the fixed member 2 are relatively rotated. The predetermined rotational force once determined can always be kept constant without fluctuating even after long-term use. Further, the fitting portion 2a of the fixing member 2 is burred (the inner edge of the fitting hole is bent to stand up to a predetermined length) to increase the contact area with the outer peripheral surface of the hollow support shaft 1a. Therefore, the stability and smoothness of the relative rotation between the rotating member 1 and the fixed member 2 can be ensured.

As described above, the disc spring is used as the spring washer in the embodiment, but the spring washer is not limited to this and various other forms can be used. Also,
Although 1 has been described as a rotating member and 2 as a fixed member, it goes without saying that this relationship may be reversed. Needless to say, this hinge mechanism can also be applied to a type in which the rotating member and the fixing member smoothly rotate relative to each other.

[0012]

As described above, according to the present invention, since one of the members that rotate relative to each other is configured as the rotation support shaft of the hinge, a hinge mechanism that is simple in structure and easy to assemble can be provided at low cost. You can Further, since the rotation contact area of the pair of members which rotate relative to each other is increased and the spring washer is press-fitted and fixed to the rotation support shaft, the hinge mechanism capable of maintaining the initial function even after long-term use. Can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a hinge device incorporating a hinge mechanism according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view of one of the rotating members shown in FIG.

FIG. 4 is a perspective view of the spring washer shown in FIG. 2 in a normal state.

FIG. 5 is a sectional view similar to FIG. 2 for explaining the assembling process of the hinge mechanism according to the present invention.

[Explanation of symbols]

1 One of a pair of rotating members (rotating member) 1a Rotating support shaft 1a 'Top surface of rotating support shaft 2 Other pair of rotating members (fixing member) 2a Fitting portion 2a' Standing top surface 3, 4 Flat washers 5, 6 Spring washers (disc washers) 7 Hold washers

Claims (3)

[Claims] 1. A pair of rotating members, wherein a part of one of the pair of rotating members is subjected to axial drawing to form a hollow support shaft, and the top surface of the support shaft is formed into a concave surface. The other one is rotatably fitted to the support shaft, at least one flat washer and at least one spring washer are fitted, and the top outer edge of the support shaft is crushed to form the flat washer. A hinge mechanism in which the pair of rotating members are caulked so as to be relatively rotatable via a spring washer. 2. The hinge mechanism according to claim 1, wherein a fitting hole portion of the other rotating member to the support shaft is burred. 3. The hinge mechanism according to claim 1, wherein the spring washer is press-fitted into the support shaft.