JPH1047337A - Tilting hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact, inexpensive tilting hinge taking little installation space although very high torque cannot be expected by pressing a rotary shaft into curl parts, and making the axial width of the respective curl parts the same. SOLUTION: In a bracket 1, a longitudinal groove 2 is provided from the center part of one side part of a flat fitting part 1a, and a first curl part 3 and a second curl part 4 wound in different directions are provided laterally with the longitudinal groove 2 placed in between while having a common axis. A rotary shaft 5 is formed slightly larger in diameter than the first curl part 3 and second curl part 4 with elasticity imparted thereto and pressed into the first curl part 3 and second curl part 4 so as to generate friction torque. Required friction torque can therefore be generated even though reducing the diameter of the rotary shaft 5, and also can be obtained even though miniaturizing a tilting hinge.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt hinge suitable for use when a display body in a small OA device such as a notebook personal computer is stopped and held at an arbitrary opening angle with respect to an apparatus body having a keyboard or the like. About.

[0002]

2. Description of the Related Art Conventionally, as a tilt hinge of this type, a rotating plate is rotatably supported on a bearing provided on a bracket, and a friction plate having a rotating shaft inserted through the center of the bearing is provided through elastic means. There is known a device in which a frictional torque is created between a rotating shaft and a bracket by pressing and pressing.

[0003]

The conventionally known tilt hinge is effective for generating a friction torque when the outer diameter of the rotary shaft is 10φ or more or has a certain outer diameter. When an OA device using this tilt hinge is miniaturized, for example, as a notebook computer, the outer diameter of the rotating shaft is 4φ or 5φ.
Small diameters such as φ will be required,
The conventional means for generating friction torque using a friction plate has a problem that it is not possible to generate a necessary and sufficient friction torque due to a reduction in the friction area.

[0004] For this purpose, a tilt hinge in which a plurality of disc springs are stacked on an elastic means and fastened with a detent nut screwed onto a rotating shaft to press the friction plate against a bearing portion is considered. However, since the number of parts is large and the configuration is complicated, the production cost is high, and the application is limited only when it is small and requires high torque. there were.

An object of the present invention is to provide an inexpensive tilt hinge which is small in size and does not take up installation space, although high torque cannot be expected.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a bracket comprising a bracket and a rotary shaft rotatably inserted into a curl provided on the bracket. It is characterized by comprising a plurality of curled portions having elasticity and winding directions changed from each other, a rotary shaft being press-fitted into the plurality of curled portions, and the axial width of each of the curled portions being substantially the same. .

According to another aspect of the present invention, there is provided a vehicle comprising a bracket and a rotary shaft interposed in the curl portion provided on the bracket during rotation, wherein the curl portion has elasticity and a plurality of curl portions having different winding directions. And press-fitting the rotating shaft into the plurality of curled portions, and providing a stopper pin in contact with a stopper pin attached to the rotating shaft in the winding direction of any one of the plurality of curled portions. can do.

The present invention further comprises a bracket and a rotary shaft inserted into the curl portion provided on the bracket during rotation, wherein the curl portion has elasticity and a plurality of curl portions having different winding directions. And press-fit the rotating shaft into these multiple curls,
The curl portion may be configured to have substantially the same axial direction, and to have a stopper pin in contact with a stopper pin attached to the rotary shaft in a winding direction of any one of the plurality of curl portions. .

In any of the above cases, the present invention provides a method of forming a grease reservoir between the rotating shaft and a plurality of curled portions, wherein the grease reservoir is provided in a plurality of circumferential grooves provided in the rotating shaft, It may be constituted by a single or a plurality of cross grooves crossing each other formed in the curled portion.

[0010]

According to the first aspect of the present invention, since the friction area of each curl portion with respect to the rotary shaft is the same, a uniform friction torque with little variation can be created in either the left or right rotation direction of the rotary shaft.

According to the second aspect of the present invention, since the stopper works in the direction in which the rotating shaft of the curl portion is tightened, it is possible to prevent the curl portion from expanding during use.

According to the third aspect of the present invention, the combined effects of the first and second aspects can be obtained.

[0013] According to the fourth aspect of the present invention, since the grease can be held more easily, the rotation of the rotary shaft can be smoothly performed over a long period of time.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention. In FIGS. 1 to 4, reference numeral 1 denotes a bracket fixed to the apparatus main body side, for example, using stainless steel. The bracket 1 is provided with a vertical groove 2 from the center of one side of the flat mounting portion 1a, and a first curl portion 3 and a second curl portion 4 having different winding directions from left to right across the vertical groove 2. Are provided with a common axis. The diameter of each of the curled portions 3 and 4 is that of the embodiment and is about 4φ. The first curl portion 3 and the second curl portion 4 are provided with gaps 3a and 4a extending in the axial direction between the respective winding front ends and the mounting portion 1a, and have elasticity by means such as quenching. Has been granted. A stopper projection 3b is provided in the winding direction of the first curl portion 3.

Numeral 5 denotes a rotary shaft made of stainless steel, and two outer circumferential grooves 5a, 5a, 5b, 5c corresponding to the first curl portion 3 and the second curl portion 4, respectively.
5b is engraved.

The rotary shaft 5 has a slightly larger diameter than the first curl portion 3 and the second curl portion 4 provided with elasticity as described above. , A friction torque is created. A mounting member 6 fixed to an opening / closing body (not shown) is attached to one end of the rotating shaft 5, and a stopper pin made of, for example, a spring pin is provided on a side that comes into contact with a stopper projection 3 b provided on the first curl portion 3. 7 is attached.

FIG. 5 is an exploded view of the bracket 1, and FIG.
Cross grooves 8a and 8 crossed in an X-shape are formed in the first piece 1b serving as the curl 3 and the second piece 1c serving as the fourth curl.
a · 8b and 8b are provided in pairs.
The second piece 1c for forming the second curl portion 4 is the first piece 1c.
It is slightly shorter than the first piece 1b on which the curled portion is formed. A grease reservoir 9 is formed by the cross grooves 8a, 8a, 8b, 8b provided in the curled portions 3, 4 of the bracket 1 and the circumferential grooves 5a, 5a, 5b, 5b provided in the rotary shaft 5. No, but lubricant such as Sumicoat is stored.

In the above embodiment, the number of curls is two. However, the number of curls may be increased, for example, to three or four. Increasing the number of curled portions and shortening the width in the axial direction has an advantage that the roundness can be easily formed. Although the bracket 1 is provided with a plurality of mounting holes 1d, a flat portion of the bracket 1 may be inserted. The mounting member 6 is fixed to one end of the rotary shaft 5 by caulking or the like, but this may be omitted and the rotary shaft 5 may be directly fixed to the opening / closing body. As the material of the bracket, besides stainless steel, spring steel, nickel brass, phosphor bronze for spring, or the like can be used.

[0019]

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

According to the first aspect of the present invention, if the number of curls in the same winding direction is equal to one to one or two to two, friction is evenly applied to both the right and left rotation directions of the rotary shaft. Generates necessary friction torque even when the diameter of the rotating shaft is reduced, because torque is generated and frictional resistance occurs due to surface contact between the outer peripheral surface of the rotating shaft and the inner peripheral surface of the curled portion. The required friction torque can be obtained even if the tilt hinge is made smaller. Thus, the opening / closing body such as the display attached to the rotary shaft can be stopped and held at an arbitrary opening angle.

According to the present invention, when the opening / closing member is opened to the limit, the stopper pin of the rotating shaft comes into contact with the stopper pin provided in the winding direction of the curl portion. Each time a force is applied in the winding direction, the inner diameter of the curled portion is expanded and the friction torque is prevented from fluctuating even after long use.

According to the third aspect, the combined effects of the first and second aspects can be obtained.

According to the fourth aspect of the present invention, even if the curl portion is long in the axial direction, the grease always spreads all over the circumference. Can be prevented from occurring.

[Brief description of the drawings]

FIG. 1 is a front view of a tilt hinge according to the present invention.

FIG. 2 is a partial sectional plan view of the tilt hinge shown in FIG. 1;

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view taken along line BB of FIG. 1;

FIG. 5 is a development view of a bracket.

FIG. 6 is an exploded perspective view of the tilt hinge shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bracket 1a Mounting part 2 Vertical groove 3 First curl part 3a Gap 3b Stopper projection 4 Second curl part 4a Gap 5 Rotating shaft 5a, 5b Peripheral groove 7 Stopper pin 8a, 8b Cross groove 9 Grease pool

Claims (4)

[Claims] 1. A curl comprising a bracket and a rotary shaft rotatably inserted into a curl provided on the bracket, wherein the curl comprises a plurality of curls having elasticity and different winding directions from each other. A tilt hinge characterized in that a rotary shaft is press-fitted into the plurality of curled portions and the widths of the curled portions in the axial direction are substantially the same. 2. A curl comprising a bracket and a rotary shaft inserted into a curl provided on the bracket when the curl is rotated, wherein the curl comprises a plurality of curls having elasticity and different winding directions. The rotary shaft is press-fitted into the plurality of curled portions, and a stopper pin that is in contact with a stopper pin mounted on the rotary shaft is attached in a winding direction of any one of the plurality of curled portions. , Tilt hinge. 3. A curl part comprising a bracket and a rotary shaft inserted into the curl part provided on the bracket at the time of rotation, wherein the curl part comprises a plurality of curl parts having elasticity and having different winding directions. The rotary shaft is press-fitted into the plurality of curled portions, the axial directions of the curled portions are made substantially the same, and a stopper pin attached to the rotary shaft is wound in the winding direction of any one of the plurality of curled portions. A tilt hinge characterized by attaching a stopper pin to abut. 4. A grease reservoir is formed between the rotating shaft and the plurality of curled portions, and a plurality of grease reservoirs formed on the rotating shaft and a single grease formed on each of the curled portions. 4. The tilt hinge according to claim 1, wherein the tilt hinge comprises a plurality of cross grooves that cross each other.