JPH11303850A - Tilt hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tilt hinge which has the small number of components, which can be manufactured at a low cost, can prevent abrupt drop at lowering time and which can maintain a stable support function for a long time. SOLUTION: A tilt arm includes an attaching member having a pair of bearing plates 4a which are spaced from and faced to each other, a shaft 5 unrotatably held between the pair of bearing plates 4a of the attaching member, a support arm 6 having opposite side panels pivotally journalled to the shaft 5, and provided at its distal end with a means for attaching a monitor television, a torsion spring 11 wound around the shaft between the support arm and attaching members 9, and a disc friction means 15 provided between the shaft and at least one of the side panels of the support arm, or between at least one of the bearing plates of the support member and the side panels of the support arm, for controlling the rotation of the support arm. Further, the disc friction means is composed of a planar washer, one or more of spring washers and a fastening nut.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt hinge which is preferably mounted on a support arm which supports a liquid crystal television for monitoring, which is installed on a work desk, for example, so as to be vertically movable.

[0002]

2. Description of the Related Art Conventionally, a liquid crystal television for a monitor installed on a work desk interferes with work if the place is fixed to a specific place on the desk, and a screen may be formed depending on an incident light angle. Since it may be difficult to see, it is necessary to change the height and inclination of the installation location as necessary,
Various tilt hinges are known.

[0003]

However, the conventionally known tilt hinges have a complicated structure and a large number of parts, so that the manufacturing cost is high and the tilt hinge is located above the work desk. There is also a problem that when the monitor liquid crystal television that has been moved is dropped on the work desk, if the user is not careful, the liquid crystal television can easily fall suddenly. In addition, there has been a problem that if used for a long time, the stable supporting ability gradually decreases.

An object of the present invention is to reduce the number of parts compared to a conventional tilt hinge and to manufacture it at low cost. To provide a tilt hinge that can be maintained over a period of time.

[0005]

In order to achieve the above-mentioned object, the present invention provides a mounting member having a pair of spaced-apart bearing plates, and a non-rotating member between the pair of bearing plates of the mounting member. A shaft on which a shaft is suspended, a support arm pivotally supported by both side plates and a mounting means for a monitor television provided at the end, and a ring wound around the shaft between the support arm and the mounting member to be elastically provided. Disc friction means for controlling rotation of the support arm is provided between the torsion spring and at least one side plate of the shaft and the support arm, or between at least one bearing plate of the mounting member and the side plate of the support arm. It is characterized by the following.

At this time, the present invention provides a flat washer which is provided between the shaft and at least one side plate of the support arm, wherein the disc friction means is attached to the shaft while being prevented from moving in the axial direction. One or a plurality of spring washers elastically provided between the flat washer and the side plate of the support arm, and a tightening nut screw-fastened to a male screw portion of the shaft can be provided.

The disk friction means provided between at least one bearing plate of the mounting member and one side plate of the support arm may further include a shaft inserted between the bearing plate and the side plate. One or more provided spring washers, a side plate of the spring washer, a flat washer fixed to the shaft opposite to a side of the side plate opposite to the spring washer, and a male screw portion of the shaft And a tightening nut which is screwed to the nut.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention. In FIGS. 1 and 2, reference numeral 1 denotes a work desk, and a top plate 2 is provided with a mounting member 4 via mounting means 3. Is attached. The mounting means 3 of the mounting member 4 is not limited to the embodiment. The attachment member 4 may be attached via the attachment means 3 so as to be rotatable in a horizontal direction on the work desk 1.

A pair of bearing plates 4a, 4a are erected on the mounting member 4 so as to face apart from each other.
The side plates 6a, 6a of the support arm 6 are attached to the bearing plates 4a, 4a via a shaft 5 so as to be rotatable in the vertical direction. More specifically, as shown in FIGS. 3 and 4, the bearing plates 4a, 4a have a head 5a at one end and a male screw portion at one end to the bearing holes 4b, 4b provided with a common axis. A shaft 5 having a shaft 5b is supported by a shaft, and through holes 6b, 6b provided in both side plates 6a, 6a of the support arm 6 are rotatably inserted into the shaft 5. As shown in FIGS. 1 and 2, for example, a liquid crystal television 10 for a monitor is vertically attached to the free end side of the support arm 6 through mounting means 9 including tilt hinges 7 and 8 of another structure. It is attached so that it can swing. This tilt hinge 7,
The structure 8 may be a combination of a spring washer and a friction plate as shown in Japanese Utility Model Laid-Open No. 5-30539. Alternatively, one may be a tilt hinge and the other may be a normal shaft hinge.

The head 5a of the shaft 5 is provided with a D-cut 5c, as shown in FIG.
The rotation of the shaft 5 is prevented by being in contact with the protruding piece 4c provided at the position a. As another means for preventing the rotation of the shaft 5, for example, after the shape of the bearing hole 4b is changed to a deformed bearing hole, the shaft 5 is inserted into the deformed bearing hole.
May be engaged as a deformed portion that matches the shape of the deformed bearing hole.

Between the mounting member 4 and the supporting arm 6, a torsion spring 11 wound around the shaft 5 inserts and locks one foot 11a into a locking hole 4d provided in the bearing plate 4a. The other foot 11b is connected to the support arm 6
It is elastically provided by engaging with an engaging hole 6d provided inside the back plate 6e. One foot 11 of the torsion spring 11 is provided on one side plate 6a of the support arm 6.
A stopper portion 6c is provided in contact with a and restricts the vertical rotation range of the support arm.

An axial movement is prevented by a step 5d provided on the rotating shaft 5, and a flat washer is mounted by axially inserting the shaft 5 into the insertion hole 12a, and the flat washer 12 and the support arm 6 are attached. A spring washer 13 composed of a plurality of disc springs (six in the drawing) is elastically provided between the one side plate 6a and the shaft 5 by axially inserting the shaft 5 into an insertion hole 13a provided in each of the side plates 6a. Bearing plate 4 of male screw portion 5b of shaft 5
A tightening nut 14 made of, for example, a nut with nylon is screw-fastened to a portion protruding from the side plate 6a and the side plate 6a and the bearing plate 4 when the support arm 6 rotates vertically.
a and / or the spring washer 13 is configured to generate friction torque.

The shaft 5 and the flat washer 12
, The spring washer 13 and the tightening nut 14 constitute the disc friction means 15. The disk friction means 15 is not limited to the one shown in the drawing. For example, a suitable friction washer may be provided between the side plate 6a of the support arm 6 and the bearing plate 4a and / or between the side plate 6a and the spring washer 13. When the shaft 5 is configured to rotate together with the support arm 6, one or both of the bearing plates 4a
And the side plate 6a, or between the head 5a of the shaft 5 or the tightening nut 14 and the bearing plate 4a.

The tightening nut 14 can be a double nut, and can also be a caulked portion formed by caulking the end of the shaft 5. The step 5d provided on the shaft 5 can be a large diameter step or a flange, so that the flat washer can be omitted.

In the drawing, the length of the supporting arm 6 is about 400 mm, and the liquid crystal television 10 weighing 3.5 kg can be supported at an arbitrary height and can be stably held.

Accordingly, the liquid crystal television 10 for monitoring attached to the free end side of the support arm 6 can be vertically rotated about the shaft 5 which is supported by the support arm 6 on the bearing plate 4a of the attachment member 4. The height of the liquid crystal television 10 can be adjusted by moving freely in the vertical direction by being pivotally supported by the torsion spring 11 provided between the mounting member 4 and the support arm 6. It is possible to stop and hold at an arbitrary position by the generated rotational torque and the friction torque generated by the disk friction means 15. LCD TV 1
Fine adjustment of the tilt angle of the screen 0 can be freely performed via the tilt hinges 7 and 8 of the mounting means 9. The vertical rotation range of the support arm 6 is regulated by a liquid crystal television 10 attached to the tip of the support arm 6 being in contact with the work desk 1, and the stopper is provided on a side plate 6 a of the support arm 6. The portion 6c is regulated by contacting the foot portion 11a of the torsion spring 11. Note that the mounting member 4 may be mounted so as to be rotatable in the horizontal direction, as described above.

[0017]

The present invention is configured as described above.
The following effects can be obtained.

According to the first aspect of the invention, the monitor liquid crystal television attached to the tip of the support arm is moved to an arbitrary height and stopped and held by a simple structure including the torsion spring and the disc friction means. In addition, the liquid crystal television can be lightly lifted by the elasticity of the torsion spring, and can be effectively prevented from dropping sharply when descending.

According to the second aspect of the present invention, the disk friction means and the torsion spring can be housed between both side plates of the support arm, so that the configuration can be made compact and a friction torque can be generated between the side plates. The friction torque can be adjusted with the tightening screw, and further, the flat torque can be generated by pressing the flat washer toward the spring washer using the elastic force acting in the axial direction of the torsion spring. .

According to the third aspect of the present invention, the friction torque can be generated between the bearing plate of the mounting member and the side plate of the support arm while maintaining the compact structure, and then the friction torque is reduced. It can be adjusted with a tightening nut.

According to a fourth aspect of the present invention, a flat washer can be omitted.
A large friction torque can be obtained by a plurality of disc springs, and when configured as in claim 6, the friction torque after assembly cannot be adjusted.
By omitting the tightening nut, it can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of use of a tilt hinge according to the present invention.

FIG. 2 is a side view illustrating an example of use of a tilt hinge according to the present invention.

FIG. 3 is an exploded perspective view of a main part of the tilt hinge according to the present invention.

FIG. 4 is a partial sectional view of a main part of the tilt hinge according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 4 Mounting member 4a Bearing plate 5 Shaft 5b Male screw part 6 Support arm 6a Side plate 9 Mounting means 10 LCD television 11 Torsion spring 12 Flat washer 13 Spring washer 14 Tightening nut 15 Disk friction means

Claims (6)

[Claims] 1. A mounting member having a pair of bearing plates opposed to each other, a shaft non-rotatably mounted between the pair of bearing plates of the mounting member, and both side plates pivotally supported by the shaft. A support arm having a mounting means for a monitor television at its tip, a torsion spring elastically wound around the shaft between the support arm and the mounting member, and at least one side plate of the shaft and the support arm , Or between at least one bearing plate of the mounting member and a side plate of the support arm, a disc friction means for controlling rotation of the support arm is provided. 2. A flat washer mounted between said shaft and at least one side plate of said support arm, said flat friction washer being attached to said shaft in such a manner as to prevent axial movement thereof. 2. The device according to claim 1, further comprising one or more spring washers elastically provided between a washer and a side plate of the support arm, and a tightening nut screw-fastened to a male screw portion of the shaft. Tilt hinge. 3. The disk friction means provided between at least one bearing plate of the mounting member and one side plate of the support arm causes the shaft to be axially inserted between the bearing plate and the side plate. One or more provided spring washers, a flat washer fixed to the shaft opposite to the side of the side plate facing the spring washer, and a screw screwed to a male screw portion of the shaft. 2. The tilt hinge according to claim 1, wherein the tilt hinge comprises a tightening nut. 4. The tilt hinge according to claim 2, wherein the flat washer is a flange provided on a shaft. 5. The tilt hinge according to claim 2, wherein the spring washer is a disc spring. 6. The tilt hinge according to claim 2, wherein the tightening nut is a caulked portion provided at an end of the rotating shaft.