JP3402317B2 - 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 suitable for tiltably supporting a display screen such as a liquid crystal display.

[0002]

2. Description of the Related Art As a hinge device for tiltably supporting a display screen such as a liquid crystal display, it is disclosed in Japanese Patent Laid-Open No. 6-29441
In Japanese Patent Laid-Open No. 4 (1994), a shaft member is provided through which a pivotal support portion of a bracket member is inserted, and a substantially disk-shaped friction plate is externally mounted on the shaft member on both sides of the pivotal support member so as not to be rotatable and axially movable.
There is described a hinge device in which both friction plates are brought into pressure contact with a pivotal portion so that an appropriate braking force is applied when the liquid crystal display is tilted, and the liquid crystal display is held at the tilted position.

In Japanese Utility Model Laid-Open No. 1-117797, a shaft member is provided with a plurality of sets of friction plates and intermediate plates, and the friction plates are provided so as to be axially movable and non-rotatable with respect to the shaft member. The intermediate plate is axially movable with respect to the shaft member and is fixed to the bracket member such that it cannot rotate relative to the shaft member, and the friction plate and the intermediate plate are brought into pressure contact with each other by a compression coil spring mounted on the shaft member. A hinge device adapted to apply a braking force to a member is described. In this hinge device, the end of the intermediate plate is brought into contact with the mounting portion of the bracket member so that the intermediate plate cannot rotate relative to the bracket member.

[0004]

In the former hinge device, since the friction plate is pressed against the pivot portion of the bracket member to apply the braking force, a large friction plate is used as the friction plate in order to set the braking force large. However, there is a problem in that the hinge device becomes large in size. Especially 1
In the case of a large liquid crystal display of 4 inches or more, it is difficult to apply the hinge device having the former structure because the braking force needs to be set high.

On the other hand, in the latter hinge device, since it is possible to increase the braking force by increasing the number of intermediate plates and friction plates, it is possible to prevent the hinge from becoming large. Since the relative rotation of the intermediate plate with respect to the bracket member is regulated by making contact with the mounting portion of the bracket member, when a large liquid crystal display is tiltably supported, a large force acts on the contact portion, and There is a problem that the backlash with respect to the tilting direction of the liquid crystal display increases over time due to wear and deformation.

An object of the present invention is to provide a hinge device suitable for tiltably supporting a large liquid crystal display.

[0007]

A first hinge device according to the present invention includes a mounting portion, a pivot portion extending upward from the mounting portion, and an upper end portion of the pivot portion extending to the same side as the mounting portion. A bracket member having an upper restricting portion and a lower restricting portion formed on the mounting portion, a shaft member rotatably mounted and supported on the pivotal support portion, and a shaft member that is non-rotatable relative to the shaft member and axially movable. The first braking member and the second braking member mounted on the shaft member so as to be rotatable relative to each other and movable in the axial direction. A second braking member having an upper fitting portion to be fitted therein, and a lower fitting portion which is fitted to the lower regulating portion so as not to be rotatable about the axis with respect to the lower regulating portion; comprising combined, and a nut member for pressing the first brake member and a second braking member Regulating the mounting portion as the lower regulating portion
A hole is provided, and the second fitting member is fitted into the restriction hole as a lower fitting portion.
A fitting piece to be fitted is provided .

In this hinge device, it is possible to provide a plurality of sets of the first braking member and the second braking member, and these braking members can be arranged by utilizing the dead space above the mounting portion of the bracket member. Therefore, it is possible to secure a sufficient braking force while configuring the hinge device in a small size. Further, the upper regulating portion and the lower regulating portion of the second braking member are fitted to the upper fitting portion and the lower fitting portion of the bracket member to regulate the relative rotation between the bracket member and the second braking member at two points. Therefore, even if a relatively large load is applied to the contact portion between the second braking member and the bracket member, it is possible to effectively prevent wear and deformation of the both, and a display device such as a large liquid crystal display. It is possible to effectively prevent backlash in the tilting direction even when the is supported so as to be tiltable. Moreover, the second braking member is assembled by fitting the upper and lower restricting portions and the upper and lower fitting portions to the bracket member, so that the first braking member and the second braking member serve as the shaft member. It is possible to easily assemble them by assembling them to the bracket member in the assembled state, or by piercing the shaft member through these members with the first braking member and the second braking member assembled to the bracket member. Become.

A second hinge device according to the present invention has a mounting portion.
And a pivot that extends upward from the attachment and the top of the pivot
From the upper control part that extends from the same side as the mounting part to the mounting part.
A bracket member having a lower restricting portion formed,
A shaft member that is rotatably mounted and supported on the support and the shaft member.
The first control, which is mounted so that it cannot rotate relative to it and is axially movable.
The moving member and the shaft member so that they can rotate relative to each other and move in the axial direction.
A second braking member that is movably mounted, and has an upper part on the upper end.
Top fitting that fits non-rotatably around the axis with respect to the regulation part
Part is provided, and the lower end part rotates about the axis with respect to the lower control part.
A second braking member formed with a lower fitting portion that matingly fits;
A first braking member and a second braking member, which are screwed to the tip of the shaft member.
And a nut member for pressing the moving member into pressure contact,
As a control part, cut-and-raise is used to provide a restricting piece on the mounting part.
As a part fitting part, a fitting strip for fitting the second braking member to the regulating piece.
It has a lit. When configured like this
Even in this case, the same operation as that of the first hinge device can be obtained.

Upper part of the first and second hinge devices
As a specific fitting structure of the control part, a shaft is attached to the upper regulation part.
A control slit that extends in the same direction as the member is formed, and the upper part is fitted.
Piece that fits into the restriction slit on the second braking member
And the second braking member as the upper fitting portion.
It may be possible to form a notch that fits into the upper regulation part.
It

A third hinge device according to the present invention has a mounting portion.
And a pivot that extends upward from the attachment and the top of the pivot
From the upper control part that extends from the same side as the mounting part to the mounting part.
A bracket member having a lower restricting portion formed,
A shaft member that is rotatably mounted and supported on the support and the shaft member.
The first control, which is mounted so that it cannot rotate relative to it and is axially movable.
The moving member and the shaft member so that they can rotate relative to each other and move in the axial direction.
A second braking member that is movably mounted, and has an upper part on the upper end.
Top fitting that fits non-rotatably around the axis with respect to the regulation part
Part is provided, and the lower end part rotates about the axis with respect to the lower control part.
A second braking member formed with a lower fitting portion that matingly fits;
A first braking member and a second braking member, which are screwed to the tip of the shaft member.
And a nut member that makes a pressure contact with the moving member.
A restriction slit extending in the same direction as the shaft member is formed on the control portion,
As the upper fitting part, fit into the restriction slit on the second braking member
A fitting piece is provided. When configured like this
Also, the same operation as the first hinge device can be obtained.
It Here, in the first to third hinge devices,
When a plurality of sets of the first braking member and the second braking member are alternately provided,
As mentioned above, without making the hinge device large,
The braking force on the shaft member can be increased.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. The present embodiment is a case where the present invention is applied to a hinge device for supporting a liquid crystal display in a tiltable manner. Further, the present invention can be similarly applied to a hinge device for tiltably supporting a display device other than a liquid crystal display, a bulletin board, and the like.

As shown in FIG. 1, a rod-shaped support leg 2 is vertically erected at the center of a substantially disc-shaped leg plate 1, and a liquid crystal is attached to the upper end of the support leg 2 via a hinge device 3. The display 4 is supported so as to be tiltable in the direction of the arrow, and a fixed braking force in the tilting direction is applied by the hinge device 3 so that the liquid crystal display 4 is held at the tilted position. . However, as the support structure of the liquid crystal display 4, any structure can be adopted, and the support structure is not limited to the form shown in FIG.

The hinge device 3 comprises a substantially U-shaped support member 5 fixed to the back side of the liquid crystal display 4, and a pair of left and right hinge device main bodies 10 fixed to the upper ends of the support legs 2. . A pair of left and right bracket portions 6 are formed on the support member 5, oval shaft holes 7 are formed in the bracket portions 6, and the hinge device main body 10 and the support member 5 are connected to each other by a shaft member 11 of the hinge device main body 10. The shaft hole 7 of the support member 5
Are connected to each other by being fixed so that they cannot rotate relative to each other.

However, if the hinge device body 10 is provided on at least one side, the other may be constituted by a normal hinge. In addition, the hinge device body 10 is attached to the liquid crystal display 4
May be provided on the side, and the support member 5 may be provided on the side of the support leg 2. Further, the support member 5 may have any configuration, and for example, two substantially L-shaped support members each having the bracket portion 6 may be used, or the support member 5 may be omitted and the liquid crystal display may be omitted. The bracket portion may be integrally formed on the machine frame of No. 4 or the like.

Next, the hinge device body will be described. Since the left and right hinge device bodies have the same structure, the left hinge device body 10 will be described. The hinge device body 10 corresponds to the hinge device of the present invention. As shown in FIGS. 2 to 6, the hinge device main body 10 includes a bracket member 12 fixed to the upper surface of the support leg 2, a shaft member 11 rotatably supported by the bracket member 12, and an intermediate portion of the shaft member 11. The three first braking members 13 and 2 which are mounted on the exterior
The second braking member 14 is provided, a disc spring 15 and a pressing plate 16 that are mounted on the right end of the shaft member 11, and a nut member 17 screwed to the right end of the shaft member 11. However, a wave washer may be provided instead of the disc spring 15. Further, although it is somewhat large in the axial direction, a coil spring may be externally mounted on the shaft member 11.

The bracket member 12 is manufactured by press-molding a metal plate, and has a mounting portion 19 fixed to the upper surface of the support leg 2 with a screw 18, a pivot support portion 20 extending upward from the mounting portion 19, and a pivot support portion. 20 has an upper regulating portion 21 extending from the upper end of the mounting portion 19 in the same direction as the mounting portion 19, and a square-shaped lower regulating hole 22 serving as a lower regulating portion is formed at an edge portion of the mounting portion 19 on the pivotal support portion 20 side. A shaft hole 23 for mounting the shaft member 11 is formed in the pivot portion 20, and a screw 18 is formed in the mounting portion 19.
There are formed a pair of front and rear screw holes 24 for mounting.

At the left end of the shaft member 11, a support shaft portion 25 having a substantially oval cross section is fitted into the shaft hole 7 of the support member 5 so as not to rotate relative to it.
Is formed, an engaging shaft portion 26 having a substantially oval cross section is formed in the middle of the shaft member 11, and a flange portion 27 is formed between the support shaft portion 25 and the engaging shaft portion 26. A screw shaft portion 28 is formed at the right end portion.

The first braking member 13 is composed of a substantially disk-shaped member, and the engaging shaft portion 26 is inserted into the central portion of the first braking member 13 such that the engaging shaft portion 26 is relatively unrotatable and axially movable. Are formed. The surface of the first braking member 13 is the shaft member 1.
In order to increase the braking force with respect to 1, it is preferable to form a rough surface.

The second braking member 14 is formed of a plate-like member, and an insertion hole 31 is formed in the center of the second braking member 14 through which the engagement shaft portion 26 is relatively rotatable and axially movable. A notch 32 is formed as an upper fitting portion that fits into the upper regulating portion 21, and a fitting piece 33 is formed as a lower fitting portion that fits into the lower regulating portion at the lower end portion. still,
In the present embodiment, the first braking member 13 is made of a friction plate, but the second braking member 14 can be made of a friction plate.

The engaging shaft portion 26 of the shaft member 11 is provided with a first braking member 13 between the collar portion 27 and the pivot portion 20, and on the right side of the pivot portion 20, the first braking member is sequentially provided from the left side. Member 13, second braking member 14, first braking member 1
3, the second braking member 14, the disc spring 15, and the pressing plate 16 are exteriorly mounted. The nut member 17 is fastened to the screw shaft portion 28 of the shaft member 11, whereby the first braking member 13 is pressed against the pivot support portion 20 and the second braking member 14 via the disc spring 15 to rotate the shaft member 11. A braking force is applied to the operation, and an appropriate braking force is applied to the tilting operation of the liquid crystal display 4 connected to and supported by the shaft member 11, so that the liquid crystal display 4 can be held at the tilted position.

In this embodiment, three first braking members 1 are used.
Although the braking force is applied to the shaft member 11 by using three and two second braking members 14, the number of the first braking member 13 and the second braking member 14 is set so that an appropriate braking force is obtained. It can be appropriately set according to the weight of the liquid crystal display 4. Further, in order to reduce the initial resistance of the tilting operation, one or a plurality of fine holes are formed in the friction pressure contact portion of at least one of the first braking member 13 and the second braking member 14 to retain lubricating oil such as grease. It may be configured to be possible.

The fitting structure of the bracket member 12 and the second braking member 14 is the hinge device body 10A shown in FIG.
As described above, the regulation slit 34 extending in the axial direction of the shaft member 11 is formed in the upper regulation portion 21A of the bracket member 12A, and the fitting piece 35 that fits into the regulation slit 34 is formed in the upper portion of the second braking member 14A. , A cut-and-raised portion 36 is formed on a side edge of the mounting portion 19 of the bracket member 12A on the pivotal support portion 20 side,
A cutout portion 37 that fits into the cut-and-raised portion 36 may be formed in the lower portion of the second braking member 14A. It is also possible to employ a combination of the fitting structure of the above embodiment and the fitting structure of this modification.

Further, as in the hinge device main body 10B shown in FIG. 8, a fixing friction plate 40 is arranged between the pivotal support portion 20 of the bracket member 12 and the first braking members 13 arranged on both sides of the pivotal support portion 20. 4 protrusions 41 are formed on both surfaces of the fixing friction plate 40, and four through holes 42 are formed in the fixing friction plate 40 so as to correspond to the protrusions 41. Good. In this case, an inexpensive iron-based metal can be used as the bracket member 12, which is preferable in reducing the manufacturing cost of the hinge device body 10B. However, the number and shape of the protrusions 41 and the through holes 42 can be set arbitrarily. Also, the bracket member 1
As long as the relative rotation between the fixing plate 2 and the fixing friction plate 40 can be regulated, it is possible to adopt an arbitrary configuration such as concave and convex fitting other than the protrusion 41 and the through hole 42. Further, such a fixing friction plate 40 can be applied to the hinge device body 10A.

[0025]

According to the hinge device of the present invention, the hinge device can be made compact and a sufficient braking force can be secured, and a relatively large load acts on the contact portion between the second braking member and the bracket member. Even if both are worn or deformed, it is possible to effectively prevent backlash in the tilting direction even when a display device such as a large-sized liquid crystal display is tiltably supported. Sufficient assemblability of the first and second braking members with respect to
And the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a liquid crystal display and its supporting legs.

FIG. 2 is a front view of a hinge device.

FIG. 3 is an exploded perspective view of a hinge device body.

FIG. 4 is a vertical cross-sectional view of a hinge device body.

FIG. 5 is a right side view of the hinge device main body.

FIG. 6 is a left side view of the hinge device main body.

FIG. 7 is an exploded perspective view of a hinge device body having another configuration.

FIG. 8 is an exploded perspective view of a hinge device body having another configuration.

[Explanation of symbols]

1 Leg plate 2 Support legs 3 Hinge device 4 Liquid crystal display 5 Support member 6 Bracket part 7 shaft hole 10 Main body of hinge device 11 Shaft member 12 bracket member 13 first braking member 14 Second braking member 15 Disc spring 16 Holding plate 17 Nut member 18 screw 19 mounting part 20 Pivot section 21 Upper regulation section 22 Lower regulation hole 23 Shaft hole 24 screw hole 25 support shaft 26 Engaging Shaft Part 27 Collar Part 28 screw shaft part 30 insertion hole 31 insertion hole 32 notch 33 Mating piece 10A Hinge device main body 12A Bracket member 14A 2nd braking member 21A Upper part control part 34 Restriction slit 35 Fitting piece 36 Cut and raised part 37 Notched part 10B Hinge device body 40 Friction plate for fixing 41 protrusion 42 through hole

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-3-125013 (JP, A) JP-A-5-10323 (JP, A) JP-A-7-217642 (JP, A) JP-A-2001-32823 (JP, A) Actual Kaihei 1-117797 (JP, U) Actual public Sho 44-8893 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) F16C 11 / 04,11 / Ten

Claims (6)

(57) [Claims] 1. A bracket member having a mounting portion, a pivot portion extending upward from the mounting portion, an upper regulating portion extending from an upper end portion of the pivot portion to the same side as the mounting portion, and a lower regulating portion formed on the mounting portion. A shaft member that is rotatably mounted and supported on the pivotal support; a first braking member that is relatively non-rotatable and axially movably mounted on the shaft member; A second braking member that is movably mounted on the upper end portion, and an upper fitting portion that is fitted to the upper regulating portion so as not to be rotatable about the axis with respect to the upper regulating portion,
A second braking member having a lower fitting portion formed at a lower end portion so as to be non-rotatably fitted to the lower regulating portion around the axis, and a first braking member and a first braking member screwed to a tip end portion of the shaft member. 2 a nut member for making pressure contact with the braking member, and a restriction hole is provided in the mounting part as the lower restriction part,
Fitting that fits into the restriction hole on the second braking member as the lower fitting part
A hinge device characterized in that a piece is provided . 2. A mounting portion and a pivot extending upward from the mounting portion.
And the upper part that extends from the upper end of the pivot to the same side as the mounting
A bra having a restricting portion and a lower restricting portion formed on the mounting portion.
And a shaft member rotatably attached to and supported by the pivotal support, and a shaft member that cannot rotate relative to the shaft member and is movable in the axial direction.
The mounted first braking member and the shaft member are rotatable relative to each other and movable in the axial direction.
It is the second braking member that is worn,
Then, an upper fitting part that fits non-rotatably around the axis is provided,
The lower end is fitted to the lower control part so that it cannot rotate around the axis.
And a second braking member formed with a lower fitting portion, and a first braking member and a second braking member that are screwed into the tip end portion of the shaft member.
A nut member for pressing the moving member into pressure contact, and the mounting portion by cutting and raising as the lower regulating portion.
A restriction piece is provided on the second braking member as a lower fitting portion.
Human <br/> Nji apparatus characterized in that a coupling slit to be fitted on one. 3. The upper regulating portion extends in the same direction as the shaft member.
And a second braking part as an upper fitting part.
The hinge device according to claim 1, wherein the material is provided with a fitting piece that fits into the restriction slit . 4. The second braking member as the upper fitting portion.
The hinge device according to claim 1 or 2, wherein a notch portion that fits into the portion regulation portion is formed . 5. A mounting portion and a pivot extending upward from the mounting portion.
And the upper part that extends from the upper end of the pivot to the same side as the mounting
A bra having a restricting portion and a lower restricting portion formed on the mounting portion.
And a shaft member rotatably attached to and supported by the pivotal support, and a shaft member that cannot rotate relative to the shaft member and is movable in the axial direction.
The mounted first braking member and the shaft member are rotatable relative to each other and movable in the axial direction.
It is the second braking member that is worn,
Then, an upper fitting part that fits non-rotatably around the axis is provided,
The lower end is fitted to the lower control part so that it cannot rotate around the axis.
And a second braking member formed with a lower fitting portion, and a first braking member and a second braking member that are screwed into the tip end portion of the shaft member.
A nut member that presses the moving member into pressure contact, and the upper restriction portion extends in the same direction as the shaft member.
A slit is formed so that the second braking member serves as an upper fitting part.
A hinge device , characterized in that a fitting piece fitted to the restraint slit is provided . 6. The first braking member and the second braking member are connected to each other.
Mutually hinge device of any one of claims 1 to 5 in which a plurality of sets.