JPH1026127A - Tilt hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To create high torque even when a rotary shaft is made in a small diameter by a pressure washer provided to rotate with a rotary shaft adjacent to a second friction plate and an elastic means provided on a central part adjacent to this pressure washer by inserting the rotary shaft. SOLUTION: A second friction plate 10 having a locking piece 10b to be locked with a cutout 2b for locking provided on a bearing part 2 on its outer periphery and made of a material such as phosphor bronze is provided on the other side surface side of the bearing part 2 while inserting a small diametrical part 6 in an insertion hole 10a. A bearing washer 11 thick enough to rotate a deformed hole 11a with a rotating shaft 3 by inserting it in deformed part 7 is provided on a central part adjacent to this second friction plate 10, and an elastic means 13 consisting of a pair of disc springs 12, 12 is provided adjacent to this bearing washer 11 while inserting the deformed part 7 in insertion holes 12a, 12a provided on its central part, and accordingly, it is possible to miniaturize the whole of a tilt hinge.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to supporting an OA device such as a word processor or a notebook personal computer, or a display (opening / closing body) such as a small liquid crystal television at an intermediate opening angle with respect to the apparatus main body. It relates to a tilt hinge suitable for use.

[0002]

2. Description of the Related Art Conventionally, as a tilt hinge of this type, a bracket attached to an apparatus main body side, and a rotary shaft having a structure attached to an end of an opening / closing body rotatably attached to a bearing portion of the bracket, A sliding plate interposed between the large diameter portion of the rotating shaft and one side surface of the bearing portion while the rotating shaft is inserted into the center portion, and the rotating shaft is inserted into the center portion of the other side surface of the bearing portion. A friction plate, a spring washer, and a holding washer, which are sequentially provided while pressing the friction plate against a bearing portion via the spring washer generated by caulking an end of the rotating shaft, thereby rotating the rotating shaft. When rotating the friction plate, the friction between the friction plate and the bearing It is known that so as to generate Ntoruku.

[0003]

The above-described conventional tilt hinge has a simple structure, and is optimal for OA devices such as laptop type word processors and personal computers that do not require excessively high torque. But smaller OA
In the case where the rotating shaft has a smaller diameter and a higher torque is required corresponding to the equipment, there is a problem that the conventional one cannot sufficiently cope with the problem.

An object of the present invention is to provide a tilt hinge capable of creating a high torque even when the diameter of a rotary shaft is smaller than that of a conventional rotary shaft.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a bracket attached to an apparatus main body and an end of an opening / closing body which is rotatably attached to a bearing of the bracket. A rotating shaft having a structure to be attached, and a first shaft interposed between the large-diameter portion of the rotating shaft and one side surface of the bearing portion so as to rotate with the rotating shaft while passing the rotating shaft through a central portion.
A friction plate, a second friction plate provided on the other side surface of the bearing portion with the rotary shaft inserted through the center, and a rotary shaft inserted through the center adjacent to the second friction plate. A pressing washer provided so as to rotate together with the rotating shaft; an elastic means provided adjacent to the pressing washer and also having a rotating shaft inserted through a central portion thereof; and a resilient means provided at one end of the rotating shaft with the elastic means. And a pressing washer interposed between the nut and the elastic means so as to rotate with the rotating shaft while inserting the rotating shaft through the center. It is characterized by.

In this case, according to the present invention, a grease reservoir can be formed by providing small holes or cutouts on the surface of the friction plate.

According to another aspect of the present invention, the resilient means comprises a plurality of disc springs, and the disc springs face each other one by one, are all superposed in the same direction, or are superposed in plural pieces in the same direction to change the direction. Can be used.

According to the present invention, the elastic means may be constituted by a spring washer or a wave washer.

[0009]

According to the first aspect of the present invention, even if a small-diameter rotary shaft is used, the first and second pressing shafts are used by the pressing washer.
The sliding surface of the friction plate with respect to the bearing portion becomes flat, sliding at a specific location is eliminated, and the first and second friction plates are moved between the large diameter portion of the rotating shaft and the bearing portion of the bracket by the elastic means. And the first friction plate and the pressing washer are strongly sandwiched between the bearing and the pressing washer, and the first friction plate and the pressing washer rotate with the rotation of the rotating shaft. Therefore, the first friction plate is between the bearing and the second friction plate is a pressing washer. And strong friction is generated between them.

According to the second aspect of the invention, the lubricating grease is held and lubricated in the grease reservoir formed by the small holes and the notches provided in the first and / or second friction plates.

According to the third aspect of the present invention, various friction torques can be generated with high torque by each combination.

According to a fourth aspect of the present invention, a high friction torque can be generated by the elasticity of a spring washer or a wave washer.

[0013]

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 bracket which is attached to the main body of a small OA device or a liquid crystal television as described above. The bearing portion 2 is formed by bending the side portion and projecting in one direction to provide the bearing hole 2a. Reference numeral 3 denotes a rotating shaft which is attached to an end of an opening / closing body such as a display body and supports the opening / closing freely. This rotating shaft 3 has a mounting hole 4
a, 4a, a large-diameter portion 5 having a notch 5a at the outer edge, a small-diameter portion 6 having a circular cross section, a deformed portion 7 having both sides cut off, And a male screw portion 8 engraved. However, this male screw portion can be a small-diameter male screw portion 81 having a circular cross section as shown in FIG. These rotary shafts have a small diameter, for example, a diameter of 6 to 8 mm at a large diameter portion and a diameter of 3 to 4 mm at a small diameter portion.

Between the large diameter portion 5 and one side surface of the bearing portion 2,
For example, a first friction plate 9 made of a material having high viscosity and abrasion resistance such as phosphor bronze is interposed,
While the small-diameter portion 6 is inserted through the insertion hole 9a provided at the center thereof, the locking piece 9b provided on the outer periphery thereof is engaged with the locking notch 5a provided on the large-diameter portion. In addition, as shown in FIGS. 4A and 4B, the first friction plate 9
A first friction plate 91 provided with a small hole 91a serving as a grease reservoir on the surface thereof, or a notch 92a or 92b
May be provided as the first friction plate 92.

On the other side of the bearing 2, a bearing 2
A second friction plate 10 made of a material such as phosphor bronze and having a locking piece 10b for locking with the locking notch 2b provided in the above is provided while the small diameter portion 6 is inserted through the insertion hole 10a. A surface pressure washer 11 having a thickness is provided adjacent to the second friction plate 10 so that a deformation hole 11a is inserted into the deformation portion 7 so as to rotate together with the rotary shaft 3 at the center. Elastic means 13 consisting of a pair of disc springs 12, 12 is provided adjacent to 11 while inserting the deformable portion 7 into insertion holes 12a, 12a provided at the center thereof. In addition, this second
Although not shown, the friction plate 10 can be provided with a grease reservoir formed of small holes or cutouts, similarly to the first friction plate 9.

The protruding sides of the disc springs 12 are opposed to each other, but there is no limitation on the use. It is also possible to align them in the same direction. In addition, the number is not necessarily limited to two.

Further, this elastic means can be replaced by a spring washer or a wave washer.

A pressing washer 14 having a greater thickness is provided adjacent to the elastic means 13 so that a deformable hole 14 provided in the center thereof is provided.
a is inserted into the deformable portion 7 so as to rotate together with the rotating shaft 3.

A nut 15 (for example, made of a synthetic resin such as nylon) is screwed onto the male screw portion 8, and the first and second friction plates 9, 10; The means 13 and the holding washer 14 are pressed in the axial direction of the rotating shaft 3.

[0020]

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

According to the first aspect of the present invention, a high torque can be created even by using a small-diameter rotary shaft, so that the entire tilt hinge can be reduced in size, and an opening / closing body such as a display attached to the rotary shaft can be provided. The stop can be freely held at an arbitrary opening angle. Also,
Since the tilt hinge is small in size as a whole, the installation space is also omitted, which contributes to downsizing the OA equipment. Further, it is possible to adjust the torque by turning the nut even after the assembly is completed and during use. In addition, since the surface pressure washer is provided in contact with the second friction plate, the sliding surface is in surface contact, and the generated friction torque can be stabilized.

According to the second aspect of the invention, since the grease stored in the grease reservoir spreads over both surfaces of the friction plate for a long period of time, the friction plate may be worn out due to lack of oil or generate abnormal noise. The long life of the tilt hinge can be achieved without performing the above operation.

According to the third aspect of the present invention, since a plurality of disc springs are used one on top of the other, there is a need for elastic deformation. Therefore, an arbitrary high torque can be created by adjusting the tightening of the nut. Can be done.

According to the fourth aspect, the number of parts of the elastic means is reduced, so that the cost can be further reduced.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view of the tilt hinge shown in FIG. 1 in an assembled state.

FIG. 3 is a partial perspective view showing another embodiment of the rotating shaft.

FIGS. 4A and 4B are front views showing another embodiment of the friction plate.

[Description of Signs] 1 bracket 2 bearing part 3 rotating shaft 5 large diameter part 6 small diameter part 7 deformed part 8 male screw part 9 first friction plate 91, 92 first friction plate 10 second friction plate 11 surface pressure washer 12 plate Spring 13 Elastic means 14 Presser washer 15 Nut

Claims (4)

[Claims] 1. A bracket attached to an apparatus main body side, a rotating shaft having a structure attached to an end of an opening / closing body rotatably attached to a bearing portion of the bracket, and a large diameter portion of the rotating shaft. A first friction plate interposed between one side surface of the bearing unit and the rotation shaft while being inserted through the center of the rotation shaft; and a center portion of the rotation shaft on the other side surface of the bearing unit. A second friction plate provided so as to be inserted through the shaft, a pressure washer provided adjacent to the second friction plate and also provided so as to rotate with the rotation shaft while passing the rotation shaft through the center portion, and the pressure washer And elastic means provided by inserting a rotary shaft in the center part, adjacent to the rotary shaft, and one end of the rotary shaft A nut attached to press the elastic means toward the bearing portion, and a presser interposed between the nut and the elastic means so as to rotate with the rotary shaft while passing the rotary shaft through the center. A tilt hinge characterized by comprising a washer. 2. The tilt hinge according to claim 1, wherein the first and / or second friction plate has a grease reservoir formed by providing a small hole or a notch on a surface thereof. 3. The elastic means is a plurality of disc springs, and the disc springs face each other one by one, are all stacked in the same direction, or are changed in direction by overlapping a plurality of pieces in the same direction. The tilt hinge according to claim 1, wherein the tilt hinge is provided. 4. The tilt hinge according to claim 1, wherein the elastic means is a spring washer or a wave washer.