JP2002139020A - Small hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size and weight of a hinge to be used for opening/ closing a display device or the like, particularly, to be the best for portable equipment including a cellular phone, a notebook-sized personal computer and a video camera, and construct the hinge to be easily and completely assembled into a body by being pushed therein in the axial direction or pushed and then slightly turned. SOLUTION: A cam system is employed for clicking at the opening terminal and the closing terminal of the display device, where a cam is pushed from the axial direction with a compression coil spring and its reaction is supported by a shank. The shank has a protrusion to be fitted into the body by being elastically deflected or turned around for locking the turn or removal from the body and a protrusion provided at the end on the opposite side for locking the removal therefrom in the case of hinge mechanism parts only. Surface treatment is given to the side of preventing falling off from the body to the extent that no bad appearance occurs. The assembly of the hinge into the body can be carried out only by pushing therein.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This hinge is used as a small space function for opening and closing display devices such as notebook personal computers, mobile phones, portable information terminals, and video cameras, and for opening and closing doors of furniture and the like. In this case, it is used as an object that is largely inconspicuous outside.

[0002]

2. Description of the Related Art An application for a small hinge is disclosed in Japanese Unexamined Patent Publication No.
62399, registered patent 2,526,490, JP-A-11-5
No. 0727, etc., which are provided with a cam or a projection, and at the same time, use a coil spring or a wave washer to apply friction or give a click feeling.

[0003]

It is important for a portable article to be light in weight, and for that purpose, a structure as small as possible has been required. In addition, since the product itself is small, it has been desired that the hinge can be mounted with a simpler operation.

[0004]

In the present application, it is the same as in the prior art that a friction is applied or a click feeling is given. However, according to claims 1 and 2, one end of a shaft that rotates the cam is provided. The cam is prevented from coming off, and the other end is provided with a rigid projection or a projection supported by an elastic portion to prevent the hinge itself from coming off. According to the third aspect, a method is employed in which a spring for friction and click is bent and fitted between the rotating parts of the main body and the opening / closing body. According to the fourth aspect, the shaft for rotating the cam is bent so as to be fitted into the hole of the mounting partner together with the shaft of the cylinder surrounding the one cam.

[0005]

According to a first aspect of the present invention, an object having a hinge function part integrated therein is attached to a rotating part of a main body or an opening / closing body.
You can assemble by simply pushing in from the axial direction,
According to the second aspect, it is assembled by turning at the same time as pushing. According to the third aspect of the present invention, the assembly is performed by inserting a part having a hinge function into, for example, a rotating part of the main body, and then bending a spring by pressing a cam to align the rotating part of the rotating body. Similarly, in claim 4, the spring is bent by pressing the shaft, and the assembly is performed by aligning the spring with the hole of the mounting part.

[0006]

FIG. 1 shows how a main body case 1 and a rotating body case 2 of a portable telephone and hinge functional parts integrated with the rotating parts 1a and 2a are mounted. FIG. 2 is an enlarged view of the integrated hinge functional part according to claim 1, and FIG. 3 is an exploded view of the individual parts. The fixed cam 3 performs a click function when the trapezoidal portions 3a and 5a are fitted with the moving cam 5 pressed by the coil spring 4, and generates friction when the trapezoid portions 3a and 5a come off during rotation. Slot 5b of moving cam 5
The movable cam 5 and the shaft 6 rotate together and move only in the axial direction because the oval-shaped portion 6a of the shaft 6 is inserted through. The shaft 6 rotates together with the main body case 1 because the elastic projection 6b is fitted in the concave portion 1aa of the rotating portion 1a of the main body case 1. This elastic projection 6
Since b is formed on the elastic plate portion 6ba which is bent by elasticity,
The shaft 6 can be mounted on the main body case 1 simply by pushing it in the axial direction. The groove 3b of the fixed cam 3 also has a rotating body case 2.
Is fitted into the protrusion 2aa of the rotating part 2a of
It rotates together with the rotator case 2. The small projection 6c at the tip of the shaft 6 is for assembling only the hinge functional component so as not to come off in the axial direction, and has a play with the fixed cam 3 after being mounted on the case. In FIG. 4, the elastic projection 6b is directed toward the inner diameter side, and the hole 1ab of the rotating portion 1a into which the elastic projection 6b fits needs to have a length in the axial direction like the above-described recess 1aa because of the hole shape. Since it is not performed, the rotating part can be made smaller accordingly. The assembly can be mounted on the main body case 1 simply by pushing in the axial direction, as described above. With this structure, it is possible to reduce the size and the number of components as compared with the conventional case where a cylindrical component is provided as a rotation stopper for a component performing the moving cam function.

FIG. 5 shows an example in which the elastic projections 6b are used instead of the elastic projections 6b.
A rigid projection 6e is provided on a cylindrical portion 6d acting as a rigid body. The coil spring, the moving cam and the fixed cam are not shown in the figure, but if the rigid projection 6e is turned slightly after pushing the shaft 6, the assembly is completed by the reaction force of the coil spring 4. . In this structure, although it is not much different from that described above that the size can be reduced, the structure is difficult to be disengaged even when the force of the coil spring 4 is increased, so that a large hinge torque can be exerted.

FIG. 6 shows a case where the rotating part 1a of the main body case 1 is not penetrated. Assembling is performed by providing a bank 1ad at the bottom of the hole of the rotating portion 1a as a rotation stop, and fitting the bank 1ad with a groove at a position opposite to the shaft 7. As an assembling procedure in this case, all the hinge functional parts are fitted into the rotating portion 1a of the main body case 1, and the back surface of the fixed cam 3 is further pressed down to the same surface as the opening surface of the rotating portion 1a by, for example, a holding member 8. After that, if the rotating portion 2a of the rotating body case 2 is shifted sideways together with the holding member 8, the assembly is completed. In this configuration, since there is no hinge functional component that can be seen from the outside, it is not necessary to pay attention to the external appearance, and the possibility of dust entering is reduced and the probability of failure is reduced.

FIG. 7 shows a hinge structure in a case where there is no cylinder portion on the case side and a hole for a hinge is simply prepared, and in a case where an opened / closed object is subsequently rotated. The structure of the hinge itself is the same as that described above, and the rotary cylinder 9 is provided with a simple circular shaft portion, the support shaft 10 is provided with an oval-shaped portion 10a, and is shrunk in the axial direction to fit into the hole of the main body 11. The hinge function as opening and closing is completed. The hinge as a rotation
If the rotating unit 10 is provided with an orthogonal tubular portion that is integrated perpendicular to the opening / closing axis, and the same hinge functional component as described above is assembled, the assembly is completed. It is possible to provide a hinge function by using, for example, a wave washer 12 instead of the coil spring. In this case, the length of the hinge function portion can be shortened.

[0010]

It is particularly desirable for portable equipment to be small and light, and as described above, the rotating portion of the main body case or the rotating body case is directly prevented from rotating and retaining the axis of the hinge function. If this is the case, there is an advantage that the size can be reduced and the number of parts can be reduced, so that the weight can be reduced. Also, since the number of parts is small, the assembling is easy, and the assembling to the main body can be performed simply by pushing in the axial direction or turning a little after pushing in, so that there is an advantage that it can be easily performed.

[Brief description of the drawings]

FIG. 1 Overall view of a mobile phone

FIG. 2 is an assembly view of a hinge function part.

FIG. 3 is an exploded view of a hinge functional component.

FIG. 4 is another shape diagram of the shaft part.

FIG. 5 is another shape diagram of another shaft part.

FIG. 6 is another exploded view of the hinge functional component.

FIG. 7 is another exploded view of a hinge functional component in which rotation is added to opening and closing.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main body case 1a Rotating part 1aa Rotating part concave part 1ab Hole part 1ac concave part 1ad Bank part 2 Rotating body case 2a Rotating part 2aa Projection part 3 Fixed cam 3a Trapezoid part 3b Groove part 4 Coil spring 5 Moving cam 5a Trapezoid part 5b Elongated hole 6 Shaft 6a Oval shape 6b Elastic protrusion 6ba Elastic plate 6c Small protrusion 6d Tube 6e Rigid protrusion 7 Axis 8 Holder 9 Rotating cylinder 10 Supporting shaft 10a Oval shape 11 Body 12 Way
Washers

Claims (4)

[Claims] An object to be opened and closed, such as a lid, a door, and a display device, wherein a first cam member having a cam surface perpendicular to a rotation axis is fitted into a cylindrical rotating portion of either a main body or an opening and closing body, and the cam is provided. The second cam member opposed to the shaft member has a structure in which only the rotation is fixed to a shaft member mounted on the other cylindrical rotating portion, and further, the shaft member is resiliently pressed by a spring inserted through the shaft member. The member has a projection having a plate-shaped elastic portion fixed to the radially concave portion of the cylindrical rotating portion to fix the rotation and the movement in the axial direction, or further has a first cam at the other end of the shaft-shaped member. Hinge provided with a member prevention part. 2. A hinge structure comprising members having the same function as described above, wherein the shaft-like member has a projection provided as a rigid body fitted into an axial recess of a cylindrical rotating portion to rotate and rotate the shaft. Hinge with fixed movement. 3. A hinge structure comprising members having the same function as described above, wherein each of the cylindrical rotating portions of the main body and the opening / closing body has a bottom, and the first cam member and the shaft-like member are provided at the bottom. Hinge with fixed rotation and axial movement. 4. A hinge structure comprising a member having the same function as described above, wherein one of the cylindrical rotating bodies is provided with a shaft portion,
A hinge, wherein the shaft member is fixed in the axial direction by a retaining member fitted to the cylindrical rotator, and has another similar hinge structure orthogonal to the cylindrical rotator.