JP2001193728A - Hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a smooth rotary moderation and rolling friction by driving a cam means slide contacting with each member into a pair of first and second cam elements so as to disperse surfaces abutting on each member. SOLUTION: In this hinge, a cam means 11 disposed between a first member 1 and a second member 5 is divided into a first cam element 7 and a second cam element 8 so as to disperse surfaces abutting on the members, thereby providing a relative rotary moderation and rolling friction between the first member 1 and the second member 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge, and more particularly, to at least one pair of cams provided with coaxially disposed cam means provided between first and second members rotatable relative to each other for obtaining rotational moderation or rotational friction. The present invention relates to a novel improvement in which each of the cam bodies operates independently by being spring-loaded independently of each other.

[0002]

2. Description of the Related Art Although not shown, a hinge of this type, which has been conventionally used, is formed by connecting a first member and a second member together with rotation moderation or rotational friction via cam means.
The spring bias was applied to the cam means.

[0003]

Since the conventional hinge is configured as described above, there are the following problems. That is, since the cam means is a single integral structure, the contact surface between the cam means and the first member is concentrated in one place,
Smooth hinge rotation cannot be obtained due to uneven wear,
In some cases, smooth rotational friction operation cannot be obtained.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and in particular, has a first and a second rotatable relative rotation.
The cam means provided between the members for obtaining the rotation moderation or rotational friction is constituted by at least one pair of cam bodies arranged coaxially, and each cam body operates independently by being independently biased by a spring. It is an object of the present invention to provide a hinge which is made in a similar manner.

[0005]

The hinge according to the present invention comprises:
In a hinge in which the first member and the second member are relatively rotatable via cam means, the cam means are individually and independently spring-biased and have at least a double first and a second coaxial arrangement. The cam means and the first member or the second member have a rotation moderation, and the cam means and the first member or the second member have a rotation moderation. The rotation of the first cam body and the first member has a rotation moderation, and the rotation of the first cam body and the first member has a rotation moderation, and the rotation of the second cam body and the first member does not. Has no rotational moderation and is configured to be joined only by rotational friction, and the second member is formed of a receiving cam connected to a shaft via a pin, and the cam means and the first member are provided on the shaft. A flange portion of the shaft and the second member, coaxially arranged on an outer periphery; And the case is frictionally coupled. When the rotational friction is performed, a groove is formed on one or both end surfaces of each of the cam bodies or the first and second members. is there.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a hinge according to the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a first embodiment of the present invention, in which a member denoted by reference numeral 1 is a first member as a case having a substantially cup-shaped overall shape, and a hole at the bottom of the first member 1. The shaft 2 provided on the shaft 3 is rotatable, and the flange 4 is frictionally connected to the outer surface of the bottom of the first member 1.

A second member 5 as a receiving cam is fixed to the end 2a of the shaft 2 via a caulking portion 6.
The member 5 is configured to be relatively rotatable together with the shaft 2. A first cam body and a second cam body 8 which operate independently of each other and have different diameters are arranged coaxially at the outer peripheral position of the shaft 2, and each of the cam bodies 7, 8 and the first member are arranged coaxially. The first and second springs 9, 1, 1, 2, 1
0 is provided in a compressed state, and the cam bodies 7 and 8 are constantly urged toward the second member 5.

[0008] A first cam body 7 is formed at an end of the first cam body 7.
The cam surface 7a is in sliding contact with the cam groove 5a of the second member 5, and the second cam surface 8a formed at the end of the second cam body 8 is
And the rotation stopper 7b of the first cam body 7 engages with a groove (not shown) formed on the inner wall of the first member 1, and the rotation stopper 8b of the second cam body 8 It is engaged with a groove 7c on the inner wall of the cam body 7. In addition, the cam means 11 is comprised by each cam body 7,8.

Therefore, when the first member 1 is fixed and the second member 5 is rotated (or vice versa) in the above-described configuration, the second cam 5 is actuated by the respective cam surfaces 7a, 8a of the respective cam bodies 7, 8. The rotation moderation (detent operation) operation of the member 5 can be achieved. In this case, since the cam means 11 is constituted by at least two (two or more possible) cam bodies 7 and 8 and each of them is individually biased by a spring, the pressure of the cam means 11 against the second member 5 is reduced. By dispersing and homogenizing, instead of concentrating in one place, a stable hinge operation without a change over time can be continued. Further, the hinge shown in FIGS. 1 and 2 can be applied to many devices other than attaching it to the lid 21 of the mobile phone 20 shown in FIG. 9, for example. Further, the cam operation of the cam means 11 in FIGS. 1 and 2 is performed between the first member and the second member 5. However, the cam operation can be performed between the first member and the second member 5. . (The same applies to the following mobile phones)

FIGS. 4 and 5 show a second embodiment. FIG. 4 shows a state where the cams are engaged, and FIG. 5 shows a state where the cams are disengaged. And the first member 5
Are integrally connected by a pin 30 so as to obtain a friction surface 40 between the flange 4 and the bottom outer surface of the first member 1. The other parts are the same as those in FIGS. 1 and 2, and a description thereof will be omitted, and the same parts will be denoted by the same reference numerals.

FIGS. 6 and 7 show a third embodiment, in which the first cam body 7 has the first cam surface 7a as shown in FIGS. As shown in FIG. 3, the body 8 has no second cam surface 8a and is formed as a flat surface 8d, and is configured to have a cam action, that is, a rotational friction action instead of a rotational moderation action. I have. As another modified example, each end face of the first and second cam bodies 7 and 8 may be a flat surface 8d to provide only rotational friction without a moderating action.

Further, in the case of the fourth embodiment shown in FIG.
When rotational friction is performed between each of the cam bodies 7, 8 and the second member 5 as described above, a groove 8e is formed on the end surface thereof to form an escape when dust or the like enters, thereby preventing a reduction in friction. are doing.
The same effect can be obtained by forming a groove in the flange portion 4 and the friction surface 40 outside the bottom surface of the first member 1. Further, in any of the above-described embodiments, since the cam means is double and the springs are provided, the cam means is configured to have good followability and to withstand the opening and closing of a large load.

[0013]

Since the hinge according to the present invention is configured as described above, the following effects can be obtained. That is, the cam means provided between the first member and the second member is constituted by at least two cam bodies, each of which is biased by a spring. The contact positions are dispersed and uniform, uneven wear and the like are prevented, and stable rotational moderation and rotational friction without change over time can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a hinge according to the present invention.

FIG. 2 is an exploded view of a main part of FIG.

FIG. 3 is a perspective view showing another embodiment of the main part of FIG. 1;

FIG. 4 is a sectional view showing another embodiment.

FIG. 5 is a sectional view showing an operation state of FIG. 4;

FIG. 6 is a sectional view showing another embodiment.

FIG. 7 is a sectional view showing the operation state of FIG. 6;

FIG. 8 is a perspective view showing another embodiment.

FIG. 9 is a configuration diagram showing a mobile phone to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st member (case) 4 Flange part 5 2nd member (receiving cam) 7 1st cam body 8 2nd cam body 11 Cam means 30 pin

Claims (5)

[Claims] 1. A hinge in which a first member (1) and a second member (5) are relatively rotatable via a cam means (11), wherein the cam means (11) are individually and independently provided. At least a double first, spring-loaded and coaxial arrangement;
A hinge comprising a second cam body (7, 8). 2. The hinge according to claim 1, wherein the rotation of the cam means and the first member or the second member has a rotation moderation. 3. The rotation of the cam means (11) and the first member (1) or the second member (2) has no rotation moderation and has only rotational friction.
The hinge as described. 4. The rotation of the first cam body (7) and the second member (5) has a rotation moderation, and the rotation of the second cam body (8) and the second member (5). 2. The hinge according to claim 1, wherein the joint is configured to be joined only by rotational friction without rotational moderation. 5. The second member (5) comprises a receiving cam connected to a shaft (2) via a pin (30), and the cam means (11) and the first member (1) are connected to the shaft (2). The flange (4) of the shaft (2) and the case as the first member (1) are coaxially arranged on the outer periphery of the shaft (2) and are frictionally coupled to each other. The hinge as described. 5. When the rotational friction is performed, a groove is formed on one or both end surfaces of each of the cam bodies (7, 8) or the first and second members (1, 5). The hinge according to any one of claims 3, 4, and 5, wherein