JP2786410B2 - Hinge device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device for connecting two members so as to be relatively tiltable and capable of stopping at an arbitrary tilt angle.

[0002]

2. Description of the Related Art In a portable word processor, for example, there is a portable word processor in which a keyboard and a display are provided integrally and the display can be tilted with respect to the keyboard body. In that case, although both are hinged, there is a demand to stop the display at an arbitrary tilt angle.

As a hinge device capable of stopping the relative tilt angle between the two members hinged to each other at an arbitrary position, for example, Japanese Utility Model Publication No. Sho 53-238.
There is one disclosed in Japanese Patent Publication No. 90. In this structure, the insertion portion of the base body rotatably supported by the fixed body is divided into two parts, and the angled leaf spring is pushed and spread by screws, so that the insertion part is pushed and spread, so that the insertion part and the fixed body are separated. A frictional force is generated between the shaft support.
Further, there is another type in which a clutch spring is fitted on a shaft rotatably supported by a bracket to stop the shaft at an arbitrary rotation position.

[0004]

However, the above structures tend to be complicated and difficult to assemble. Further, the clutch spring structure has a problem in that the manufacturing cost is increased, for example, dimensional control of the clutch spring and the shaft is strict.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is possible to hold the two members in a stopped state at an arbitrary tilt angle and to reduce the manufacturing cost. In the present invention, the first and second members are relatively rotatably connected to each other and can be stopped at an arbitrary tilt angle .
And the rotor and the two parts
A hinge device comprising a housing attached to the other of the members , wherein the rotor and the housing can hold a stopped state with a frictional force relative to each other and can rotate with an external force exceeding the frictional force. Formed by insert or two-color molding , and of the rotor
At least one axial end face is the inner surface of the housing.
It was assumed to be slidably in contact with.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to specific examples shown in the accompanying drawings.

FIG. 1 is a schematic perspective view of a word processor 1 to which the present invention is applied. A hinge device 2 according to the present invention includes a display 1a as first and second members.
The keyboard body 1b is provided on both sides of the keyboard body 1b so as to be able to relatively tilt.

As shown in FIG. 2, the hinge device 2 is composed of two parts: a disk-shaped rotor 3 formed by molding a synthetic resin material; and a housing 4 for receiving the rotor 3 so as to surround it. . A shaft 3a having a shape penetrating the shaft center is formed coaxially by integral molding in the rotor 3, and both shafts near the rotor 3 side of the shaft 3a are formed by both shaft support holes 4a formed in both end walls of the housing 4. The base portion is pivotally supported.

The housing 4 has an arm portion 4b as a mounting portion formed by extending a part of the housing 4 outward in the radial direction, and a keyboard is provided through a mounting hole 5 formed in the arm portion 4b. It is attached to the main body 1b by screwing. At one end of the shaft 3a of the rotor 3, a D-shaped cross-section mounting portion 6 is formed as a mounting portion, and the D-shaped cross-section mounting portion 6 is inserted into a corresponding D-shaped cross-section hole (shown in the drawing) of the display 1a. And one end of the shaft 3a is attached to the display 1a. And
The shaft 3a can rotate integrally with the display 1a in accordance with the tilting movement of the display 1a.

The hinge device 2 includes a rotor 3
After molding, the housing 4 formed to house the rotor 3 is manufactured by insert or two-color molding. At this time, a material that does not adhere to each other is selected for both materials. By forming in this manner, both end surfaces in the axial direction and the outer peripheral surface of the rotor 3 come into contact with the inner surface of the housing 4, and a surface frictional force is generated between them, so that the rotor 3, that is, the display 1 a is tilted at an arbitrary tilt angle Can be stopped. A plurality of annular grooves 3b are formed concentrically on the axial end surface of the rotor 3, so that a surface frictional force can be suitably generated.

As described above, the hinge device can be constituted by the minimum number of parts of only two parts, the cost of parts can be reduced and the production cost can be reduced, and the shape of the hinge device can be reduced by forming by insert or two-color molding. Thinning is also possible. Further, as shown in FIG. 2, by covering the rotor 3 having a diameter larger than that of the shaft portion 3a with the housing 4, the rotor 3 is suitably prevented from coming off. However, the outer diameter of the rotor 3 is made the same as that of the shaft 3a. The same applies to the case where a circumferential groove is formed at the axially intermediate portion of the rotor 3. In addition, by making the rotor 3 have a diameter-increased structure, the surface area where the frictional force is generated becomes large, and the holding force at the time of stopping can be increased.

The hinge device according to the present invention configured as described above can be applied to various products without being limited to use for adjusting the tilt angle of the display 1a of the word processor shown in the drawings. For example, a connecting portion between a main body of a facsimile machine or a portable personal computer and each display, a connecting portion between a support of a mirror stand and a mirror, a connecting portion of a support of a telephone stand and a telephone receiving portion, a liquid crystal TV,
It is suitable for the joint between the main body and the display.

[0013]

As described above, since the hinge device which can be held at a stop at an arbitrary tilt angle is formed by insert or two-color molding, the number of constituent parts can be reduced to a minimum of two parts, and the manufacturing cost is reduced. together it may cost reduction a, b
Not only the outer peripheral surface of the motor but also the axial end surface and the inside of the housing.
Since the frictional force between the rotor and the surface is also generated , the axial length of the rotor must be increased in the structure that receives the rotor in the housing.
Since a large frictional force can be generated without performing the above operation , the hinge device can be made thinner and space saving can be achieved in the mounting object.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a word processor to which the present invention is applied.

FIG. 2 is a fragmentary perspective view showing a hinge device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Word processor 1a Display 1b Keyboard main body 2 Hinge device 3 Rotor 3a Shaft 4 Housing 4a Shaft support hole 4b Arm part 5 Mounting hole 6 D-shaped cross section mounting part

Claims (1)

(57) [Claims] The first and second members are relatively tiltably coupled to each other and can be stopped at an arbitrary tilt angle .
A rotor attached to one of the two members,
Wrapped and received on the other of the two members
A hinge , comprising a housing and a housing , wherein the rotor and the housing can be held in a stopped state by a frictional force relative to each other, and can be rotated by an external force exceeding the frictional force. It is formed by molding, and at least one of said rotor
Hinge apparatus axial end face is characterized in that it slidably contacts the inner surface of the housing.