JP2842848B2 - Foldable telephone hinge structure - 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 structure for preventing the swing of a hinge portion between an openable and closable upper panel and a lower panel of a case of a foldable telephone or the like at the time of opening and closing, thereby preventing a decrease in electrical characteristics of the case.

[0002]

2. Description of the Related Art Conventionally, a structure in which an upper panel and a lower panel of this type are connected to each other via a hinge portion and can be opened and closed with each other is as follows.
As shown in FIG. 4, a cylindrical hinge portion 10a is fitted on the upper side of the lower panel 10, and two projections 10b as guide rails are provided therein.
Groove 9a provided with clearance at the point where it engages with
Is engaged with the hinge boss (A) 9. Upper panel 1
Of the hinge boss (B) 4 and the coil spring 5 in the hinge boss (A) 9 at the hinge part of the hinge boss (A)
9 and attached to the upper panel 1 with a hinge shaft screw 7. Coil spring 5 entering lower panel 10
When the upper panel 1 is opened, the hinge boss (A) 9 slides in the direction of arrow A with the projection 10b inside the lower panel 10 as a guide when the upper panel 1 is opened. Hinge boss (A) 9 Hinge boss (B) 4
The concave portion 9b provided on the side seating surface engages with the convex portion 4a of the seating surface of the hinge boss (B) 4 at a predetermined angle of opening and closing the panel. A) A structure in which sliding in the direction of arrow A occurs in 9.

[0003]

The first problem is that when the upper panel is opened, the hinge bosses (A) and the hinge bosses (B) engage with each other at a predetermined angle due to the concave-convex engagement between the bearing surfaces. There is a problem that the lower panel is likely to sway at the hinge portion, resulting in voice characteristics being distorted during a telephone call, which tends to cause a decrease in electrical characteristics. The reason for this is that a clearance is provided between the projection of the lower panel and the groove of the hinge boss (A) so that the lower panel swings.

[0004] The second problem is that when the upper panel is brought into contact with the body, shaking occurs, which causes operational discomfort during a telephone call. The reason for this is, like the reason for the first problem, the clearance for sliding.

An object of the present invention is to open and close an upper panel and a lower panel at a hinge portion in a case of a folding telephone or the like, and to shake the upper and lower panels when the upper panel stops at a predetermined position angle. It is an object of the present invention to provide a foldable telephone hinge structure for preventing the foldable telephone.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a hinge structure for opening and closing an upper panel and a lower panel of a housing of a foldable telephone or the like. Inside the hinge portion, at least one protrusion as a guide rail and a substantially cylindrical hinge boss which engages with the protrusion and slides in the longitudinal direction are provided on the longitudinal wall surface, and an outer peripheral portion of the hinge boss is provided. In the longitudinal direction, a concave groove for engaging with the projection is provided, and a middle portion in the longitudinal direction is a small-diameter portion having a smaller diameter than the outer peripheral portion, and an attachment hole is provided in at least one portion of the small-diameter portion. One end of a ring-shaped leaf spring fitted to the diameter portion is locked in the mounting hole, and the other end of the leaf spring has a tongue piece. The hinge boss is connected to the lower portion by a shaft screw member via a coil spring. Through the panel When the upper panel is opened relative to the lower panel, the tongue of the leaf spring is pressed against the side wall of the projection of the lower panel by a spring elastic force. The configuration is such that the clearance between the protrusion and the concave groove comes into contact with each other to eliminate the clearance.

According to such a structure, when the upper panel (1 in FIG. 1) is opened, the hinge boss (A) (2) in the hinge portion (2a in FIG. 1) of the lower panel (2 in FIG. 1). FIG.
The concave groove (3a in FIG. 2) on the outer surface of (3) slides in the direction of arrow A with the projection (2b in FIG. 2) of the lower panel (2) as a guide, and the upper panel (1) moves at a predetermined position angle. When stopped at, the small diameter portion of the hinge boss (A) (3) (3b in FIG. 2)
The tongue piece (FIG. 2) of a ring-shaped leaf spring (6 in FIG. 2) fitted into
6a) comes into pressure contact with the side wall of the projection (2b) by a spring elastic force to eliminate the clearance between the projection (2b) and the groove (3a), thereby suppressing the swing of the upper panel (1). Can be prevented. Also, hinge boss (A)
(3) is slid and stopped at a predetermined position angle by the hinge shaft screw (7 in FIG. 2) using the upper panel (1).
The seating surface of the hinge boss (B) (4 in FIG. 2) is unevenly fitted to the seating surface of the hinge boss (A) (3) because of the elastic force of the coil spring (5 in FIG. 2) fixed to the side. This is because the position angle is set.

[0008]

Next, the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing the appearance of an embodiment of the present invention. FIGS. 2A and 2B are cross-sectional and longitudinal sectional views of a main part of the embodiment of the present invention. 3 (c) and 3 (d) are perspective views of a ring-shaped leaf spring and a hinge boss (A). FIG. 3 (a) shows an embodiment of the present invention in which the upper panel is closed, and FIG. It is a cross section of an important section shown respectively.

The structure of the housing 8 of the foldable telephone according to the embodiment of the present invention is shown in FIG.
And the lower panel 2 are hingedly connected to each other so as to be openable and closable.

A cylindrical hinge portion 2 is provided on the upper end side of the lower panel 2.
As shown in FIG. 2, the inner surface of the hinge portion 2a has two protrusions 2b as guide rails in the longitudinal direction in the longitudinal direction, and a cylindrical hinge boss (A) 3 is provided at the same portion with an arrow A.
It is provided so as to slide in the direction. That is, the hinge boss (A) 3 is slidable in the direction of arrow A by engaging a concave groove 3a provided on the outer peripheral surface with the projection 2b, and has a middle portion in the longitudinal direction orthogonal to the concave groove 3a. The small-diameter portion 3b is provided so as to rotate, and the small-diameter portion 3b has two mounting holes 3c,
Drill 3d. The ring-shaped leaf spring 6 is fitted into the small diameter portion 3b. The tip of the ring-shaped leaf spring 6 has a tongue piece 6a,
Two claw portions 6b and 6c which are folded inward are provided in the middle of the ring-shaped orbital portion.

With respect to the hinge boss (A) 3, the ring-shaped leaf spring 6 is attached to the mounting holes 3c, 3d by the claw portions 6b, 6c.
, And are fixed integrally. The hinge boss (A) 3 having the ring-shaped leaf spring 6 is attached to the hinge portion 2 a of the lower panel 2.
Is fitted to the projection 2b on the inner surface of. At this time, as shown in FIG. 2 (b), the fitting is performed so that the tongue piece 6a comes into contact with the side wall 2c of the projection 2b. On the other hand, a hinge boss (B) 4 is provided at the base of the hinge portion 1a of the upper panel 1. The hinge boss (A) 3 is slidably attached to the upper panel 1 via a coil spring 5 and a hinge shaft screw 7 passing through the hinge boss (B) 4.

As described in the prior art, the hinge boss (A) 3 and the hinge boss (B) 4 have a concave portion 3f and a convex portion 4a respectively on the joint seating surface. While being stopped by the fitting, the engagement / disengagement operation of the concave / convex fitting causes the hinge boss (A) 3 to slide in the direction of arrow A.

Next, the operation of this embodiment having such a configuration will be described.

When the upper panel 1 is opened, as shown in FIG. 3 (b), the unevenness of the joint surface between the convex portion 4a of the seat surface of the hinge boss (B) 4 and the concave portion 3f of the seat surface of the hinge boss (A) 3 By the fitting, the hinge boss (A) 3 stops at a predetermined opening / closing angle, and is guided along the projection 2b of the lower panel 2 by the elastic force of the coil spring 5;
At the time of closing and opening as shown in (b), it slides in the left-right direction (direction of arrow A). When the upper panel 1 is opened, the tip of the tongue piece 6a integrally fixed to the small-diameter portion 3b of the hinge boss (A) 3 at the place where the upper panel 1 is stopped is combined with the forcing force due to the above-mentioned concave-convex fitting to form the ring-shaped leaf spring 6 Panel 2 by the elastic force of
(FIG. 2 (b)), and even when the upper panel 1 is closed, the tongue piece 6a is kept in the projection of the lower panel 2 by the above-mentioned uneven fitting. 2b is maintained in contact with the side wall 2c.

As described above, when the upper panel 1 is opened and closed, the tongue 6a of the ring-shaped leaf spring 6 integrally attached to the small diameter portion 3b on the outer periphery of the hinge boss (A) 3 is attached to the projection 2b of the lower panel 2. It is pressed against the side wall 2c by a spring elastic force and is in contact therewith. A clearance 3e is provided between the projection 2b of the lower panel 2 and the concave groove 3a of the hinge boss (A) 3 to facilitate sliding in the direction of arrow A. But,
When the upper panel 1 is opened, the lower panel 2 does not shake because the tongue piece 6a is pressed against and brought into contact with the elastic force of the ring-shaped leaf spring 6 to remove the clearance 3e.
Shaking of the upper panel 1 can also be prevented.

[0017]

The first effect is that when the upper panel is opened,
Since the swing at the hinge portion can be prevented, it is possible to prevent a decrease in electrical characteristics such as generation of voice distortion during a call.

The reason is that the clearance provided between the projection of the lower panel and the groove of the hinge boss (A) is
The tongue of the ring-shaped leaf spring attached to and integrated with the hinge boss (A) presses and removes the side wall of the projection of the lower panel by the elastic force of the spring. This is because the panel can be prevented from shaking.

A second effect is that when the upper panel is opened, the swing of the hinge portion can be prevented, so that when the upper panel comes into contact with the body, the discomfort of the communication state due to the swing of the housing is not given. That is. The reason is the first
This is the same as the reason for the effect.

[0020]

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of an embodiment of the present invention.

2A and 2B show an embodiment of the present invention.
Is a cross-sectional view and a vertical cross-sectional view of a main part, (c) and (d).
FIG. 3 is a perspective view of a ring-shaped leaf spring and a hinge boss (A).

FIGS. 3A and 3B are cross-sectional views of essential parts of the embodiment of the present invention, in which the upper panel is in a closed state and the upper panel is in an open state, respectively.

FIGS. 4A and 4B show a conventional hinge part structure.
3 is a cross-sectional view and a vertical cross-sectional view of a main part, and FIG. 3C is a perspective view of a hinge boss (A).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper panel 2, 10 Lower panel 3, 9 Hinge boss (A) 4 Hinge boss (B) 5 Coil spring 6 Ring-shaped leaf spring 7 Hinge shaft screw 8 Housing 1a Hinge part 2a Hinge part 2b Projection part 2c Side wall 3a Depression groove 3b Small diameter portion 3c, 3d Mounting hole 3e Clearance 3f Concave portion 4a Convex portion 6a Tongue piece 6b, 6c Claw portion

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04M 1/02 F16C 11/10 H05K 5/03 H04Q 7/32

Claims (2)

(57) [Claims] 1. A hinge structure for opening and closing an upper panel and a lower panel of a housing such as a foldable telephone, wherein a cylindrical hinge provided at at least one end of the lower panel has a longitudinal direction. At least one protrusion as a guide rail and a substantially cylindrical hinge boss that engages with the protrusion and slides in the longitudinal direction are provided on the wall surface of the hinge boss. An engaging concave groove is provided and an intermediate portion in the longitudinal direction is a small-diameter portion having a smaller diameter than the outer peripheral portion. A mounting hole is provided in at least one portion of the small-diameter portion, and a ring-shaped fitting fitted to the small-diameter portion is provided. One end of the leaf spring is locked in the mounting hole, and the other end of the leaf spring has a tongue. The hinge boss is passed through the lower panel by a shaft screw member via a coil spring to the upper panel side. Sliding When the upper panel is freely opened and the upper panel is relatively opened with respect to the lower panel, the tongue of the leaf spring is pressed against the side wall of the projection of the lower panel by a spring elastic force to contact the projection with the projection. A folding telephone hinge structure, wherein clearance between the groove and the groove is eliminated. 2. The sliding of the hinge boss is caused by the unevenness provided on the hinge boss and a part of the upper panel being fitted / removed with the unevenness along with the opening / closing operation of the upper panel. The hinge structure of a folding telephone according to claim 1, wherein