KR20090122861A - Hinge device - Google Patents

Abstract

PURPOSE: A hinge apparatus assembled in order to obtain predetermined rotation torque is provided to relatively rotate a substrate member and a plate member through predetermined torque. CONSTITUTION: Flat washers(2, 3), a plate member, spring washers(4, 5), and press washers(6) are inserted on a hollow supporting shaft(1). A plate member is pressed on the substrate member through flat washer by the tension of the spring washer. The substrate member and the plate member are rotated by the predetermined torque. The hollow fulcrum shaft is classified into a main shaft of the large diameter.

Description

Hinge mechanism {HINGE DEVICE}

The present invention relates to a hinge mechanism that can be suitably used for the purpose of connecting the main body of a liquid crystal television, a notebook computer, a mobile phone, and the like to a display unit, or other OA equipment so that the cover can be reliably held at any open angle position with respect to the main body. It is about.

In a liquid crystal television or a laptop, in many cases, the main body portion and the display portion are connected to each other by a hinge so that the display portion can be kept at least 90 ° from the main body portion. In this case, the display portion is surely held at the desired standing position, and the up and down operation is required to be performed lightly and smoothly. In order to meet this demand, it has responded through researches, such as incorporating a click apparatus into the conventional hinge mechanism or increasing the rotational torque of the movable part of a hinge. However, these studies resulted in a rise in the cost of the product, which resulted in a challenge to the cost-down demand.

In order to solve this problem, the present applicant has been formed in the plate member (A) as shown in FIG. 6 so that the top wall (1a ') has a hollow support shaft (1) having a head portion forming an inverted cone shape. The flat washer (2), the plate-shaped portion (B) of the main body of the device, the flat washer (3), the two spring washers (4, 5) and the push washer (16) are inserted in this order, and the top wall (1a ') The substrate member (A) through the flat washers (2, 3) by the elasticity of the spring washers (4, 5) by crushing the circumferential edge portion of the pin (1a ') to the press washer (6). A hinge mechanism configured to press the plate-shaped portion B and rotate the display portion, that is, the plate-shaped portion B with a predetermined torque, with respect to the main body of the appliance, namely the plate member A (see Patent Document 1).

[Patent Document 1] Japanese Unexamined Patent Publication No. 2003-262214

However, this hinge mechanism is assembled from the upper side by pushing upward the top wall 1a 'forming the inverted cone shape by the rod-shaped jig LG inserted in the hollow support shaft 1 as shown in FIG. It is performed by pressing and crushing the edge part of a top wall by a caulking jig UG. Accordingly, the top circumferential edge of the hollow support shaft 1 extends widely on the push washer 6, and the top wall 1a 'which forms an inverted cone shape is deformed into a disc shape in which the center portion is slightly recessed, as shown in FIG. Similarly, the assembly is completed. In this case, the magnitude of the torque at the relative rotation of the plate member A and the plate-shaped portion B is determined by the deformation amounts of the spring washers 4 and 5. Since the amount of deformation slightly changes depending on the caulking state, there is a problem in that caulking is required to adjust or caulk the moving strokes of the jig LG and UG in order to caulk a predetermined value of torque.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a hinge mechanism of the above type having a structure that can be assembled so that a predetermined rotational torque can be simply obtained.

In order to achieve the above object, the hinge mechanism according to the present invention is formed integrally with the substrate member by the shaft reducing process so that the top wall has at least the flat washer with the closed head portion having the inverted cone shape. The plate-shaped member, the spring washer and the push washer are fitted in order, and the circumferential edge portion of the top wall is crushed to caulk the top wall to the push washer so that the spring washer is resilient to the substrate through the flat washer. In a hinge mechanism configured to press the plate member against the member and to allow the substrate member and the plate member to rotate relative to a predetermined torque, the hollow support shaft has a large diameter main shaft to which the flat washer, the plate member, and the spring washer are fitted. Part and the head part of the small diameter to which the push washer is fitted And is in the off state up to the pressing washer to shoulder portions of the main shaft portion, characterized in that the caulked to the top wall in the press washer.

According to the present invention, when the push washer is placed on the shoulder of the main shaft portion, the bottom edge of the inner circumferential counterbore portion of the push washer is about the same height as the top position of the bottom surface of the inverted cone-shaped top wall. It is characterized in that the caulking.

Further, according to the present invention, when the push washer is placed on the shoulder of the spindle portion, the upper surface of the push washer is caulked so as to be approximately the same height position as the highest position of the lower surface of the inverted conical top wall. It is done.

Further, according to the present invention, it is characterized in that one flat washer, the plate member, one flat washer and two spring washers are sequentially arranged on the main shaft portion.

According to the present invention, at least the flat washer, the plate-shaped member, the spring washer and the pressure washer are formed on the hollow support shaft having a closed head portion which is integrally formed with the substrate member by the shaft reducing process so that the top wall has an inverted cone shape. Pressing the plate member against the substrate member through the flat washer by elasticity of the spring washer by crushing the circumferential edge portion of the top wall and caulking the top wall to the push washer, as well as the mounting. A hinge mechanism having a structure capable of relatively rotating the member and the plate member at a predetermined torque can be easily and inexpensively provided.

Hereinafter, the present invention will be described with reference to the disclosed examples.

1 is a perspective view showing an example of a hinge device in which a hinge mechanism according to the present invention is assembled; FIG. 2 is an enlarged cross-sectional view taken along line II-II of FIG. 1, and FIG. 3 is a normal view of the spring washer shown in FIG. 4 is an enlarged view of a main portion for explaining the positional relationship between the hollow support shaft and the push washer having the closed head portion formed by the shaft reduction in the hinge mechanism of the present invention. (B) is sectional drawing which showed the state after caulking, respectively.

In the figure, A denotes a small diameter closed head portion 1a and a large diameter major shaft portion 1b in which the top wall 1a 'is formed in an inverted cone shape in a direction perpendicular to the surface thereof by an axial reducing process. In this embodiment in which the hollow supporting shaft 1 is formed by dividing the one of the pair of rotating members (hereinafter, referred to as "rotating member" for convenience of description), B is the hollow supporting shaft 1 In this embodiment, which is rotatably fitted to the main shaft portion 1b of the through shaft by the washer 2, the other one of the pair of rotating members used as the fixed side (hereinafter referred to as " fixed member " for convenience of description). ), 3 is a flat washer fitted into the spindle 1b, 4 and 5 is a spring washer press-fitted and fitted into the spindle 1b, 6 is a head of the hollow support shaft 1 Raises to the shoulder portion 1b 'of the main shaft portion 1b forming the boundary between 1a and the main shaft portion 1b. It is fitted to the head portion 1a in a state where the top wall 1a 'is crushed by the caulking jig and caulked through two spring washers (4, 5) and two flat washers (2, 3). The rotating member A is pressed against the fixing member B so that the rotating member A can be rotated by a friction force of a predetermined size, that is, torque, and the flat washer 2, the fixing member B, and the flat washer ( 2) and a push washer to prevent escape of the spring washer 4, 5 from the hollow support shaft 1;

Next, the assembly of the hinge apparatus shown in the figure will be described. First, by using a press machine, the rotating member A and the fixing member B having a predetermined size and shape are mass-produced, and the head portion of the size required for the required portion of the rotating member A by axial reduction processing ( A hollow support shaft (1) having 1a) and a main shaft portion (1b) is formed and necessary parts such as flat washers and spring washers are prepared. Then, the flat washer 2, the fixing member B and the flat washer 3 are fitted to the main shaft portion 1b of the hollow support shaft 1 of the rotation member A, and then the dish springs 4 and 5 are mounted. And press inward so that their bulgings face the outside (left side in FIG. 3), and then attach the push washer 6 to the head portion 1a and attach it to the top wall using a known jig (not shown). Tap the outer edge of 1a 'to extend outward in the radial direction and caulk to the hollow support shaft 1 with the push washer 6 placed on the shoulder 1b'. At this time, the spring washers 4 and 5 are deformed by a predetermined amount so as to be close to the flat washer from the dish washer, and a stress is generated, and the fixing member B is press-contacted through the flat washers 2 and 3 by the stress and The rotation member A and the fixing member B are assembled so that they cannot be rotated relative to each other unless an abnormal rotation force is applied. It goes without saying that the predetermined rotational force in this case is determined by appropriately selecting the spring constants of the spring washers 4 and 5 and the shape in the normal state.

Here, the relative relationship between the shape of the best head part 1a and the thickness of the press washer 6 discovered by long-time research and experiment of this inventor is demonstrated. When the hinge mechanism requires a spring washer having a large spring constant, that is, it is necessary to configure the rotating member A to be unable to rotate unless a larger rotational force is applied, the thickness of the push washer 6 is increased. In this case, in order to increase the coking strength, counterboring is usually performed on the inner circumference of the push washer to increase the area where the top wall 1a 'extends during caulking. In this case, when the push washer 6 is placed on the shoulder portion 1b 'of the main shaft portion 1b as shown in Fig. 4 (a), the counterbore bottom edge 6a is the highest position on the bottom surface of the top wall. That is, it is preferable to select so that it may be located at substantially the same height position (broken position of FIG. 4 (a)) of the bottom position 1a 'of the inverted conical lower surface.

By forming the shoulder portion 1b 'as described above, the buckling of the main shaft portion 1b at the time of caulking can be reliably prevented, and the counterbore bottom edge 6a and the top wall 1a of the push washer 6 are prevented. By selecting the highest position (1a ') of the lower surface of the') at approximately the same height position, the head portion 1a is not opened but synergistic with that of the closed portion, so that the top wall 1a 'and the pressure washer 6 Caulking can be done moderately and very firmly, and caulking does not loosen with prolonged use. That is, when the height position of the bottom edge 6a of the counterbore portion 6a of the push washer 6 is higher than the highest position 1a ＂of the bottom surface of the top wall 1a ', the range of the head portion spreading during caulking becomes small and caulking. When the strength decreases and the height position of the bottom edge 6a of the counterbore 6 of the push washer 6 is lower than the highest position 1a ＂of the lower surface of the top wall 1a ', the head portion spreads during caulking. The range is too large to damage the appearance of the caulking portion. Thus, according to the present invention, it is possible to provide a hinge mechanism capable of maintaining a set torque for a long time and having a neat appearance of the caulking portion.

5 is an enlarged view of a main portion of another embodiment for explaining the positional relationship between the hollow support shaft and the push washer formed by shaft reduction in the hinge mechanism of the present invention, where (a) is before caulking and (b) is after caulking. Each is a cross-sectional view. In the drawings, the same reference numerals are assigned to members and portions that are substantially the same as in the above embodiment, and descriptions thereof will be omitted.

This embodiment discloses a case where a counterbore is not formed in the inner peripheral edge portion of the push washer 6. In this case, when the push washer 6 is placed on the shoulder portion 1b 'of the spindle 1b as shown in Fig. 5 (a), the upper surface 6b of the push washer 6 and the inverted cone shape are shown. The thickness of the press washer 6 is selected so that the highest position 1a 'of the lower surface of the top wall 1a' becomes approximately the same height position. By selecting the thickness of the press washer 6 in this way and caulking, the same effect as the above-mentioned embodiment can be obtained.

In addition, in the embodiment, two flat washers and two spring washers are used, and a plate spring is used as the spring washer. However, the number of washers and the shape of the spring washer are not limited thereto. It can be changed according to the size of.

As described above, according to the present invention, the rotational torque of the rotating member relative to the fixing member is very large, and it is possible to provide such a hinge mechanism that can maintain the set value for a long time at a low cost, and is very useful in liquid crystal televisions, notebooks and other OA devices. It can use suitably.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows an example of the hinge apparatus which assembled the hinge mechanism which concerns on this invention.

FIG. 2 is an enlarged cross-sectional view taken along line II-II of FIG. 1.

3 is a perspective view of an ordinary state of the spring washer used in FIG.

Fig. 4 is an enlarged view of the main portion for explaining the positional relationship between the hollow support shaft and the push washer formed by shaft reduction in one embodiment of the hinge mechanism of the present invention, (a) before caulking and (b) after caulking. Each state is shown.

Fig. 5 is an enlarged view of a main portion for explaining the positional relationship between the hollow support shaft and the push washer formed by shaft reduction in another embodiment of the hinge mechanism of the present invention, where (a) is before caulking and (b) is after caulking. Each state is shown.

6 is an enlarged cross-sectional view of a conventional hinge mechanism corresponding to FIG. 2.

Fig. 7 is a schematic diagram for explaining the caulking state of the push washer at the time of assembling this kind of hinge mechanism.

<Description of the code>

One… Hollow support shaft

1a... Head

1a '… Summit wall

1a ＂... Top position of top wall bottom

1b... Spindle part

1b '… Shoulder of main shaft

2, 3... Flat washer

4, 5... spring washer

6... Push washer

6a... Counterbore bottom edge of push washer

6b... Top of push washer

A… Rotating member

B… Fixing member

Claims (4)

It is formed integrally with the substrate member by axial reducing, so that at least the flat washer, the plate-shaped member, the spring washer and the pressure washer are inserted into the hollow support shaft having the closed head part of which the top wall forms an inverted cone shape. And the plate member is pressed against the substrate member through the flat washer by elasticity of the spring washer by crushing the peripheral edge portion of the top wall and caulking the top wall to the push washer. In the hinge mechanism configured to rotate relative to a predetermined torque, The hollow support shaft is divided into a main shaft portion of a large diameter on which the flat washer, the plate member, and a spring washer are fitted, and the head portion of the small diameter on which the push washer is mounted, and the push washer on the shoulder of the main shaft portion. The hinge mechanism, characterized in that for caulking the top wall to the push washer in the state. The bottom edge position of the inner circumferential counterbore portion of the push washer when the push washer is placed on the shoulder of the spindle portion is approximately the same as the highest position of the bottom surface of the inverted conical top wall. The hinge mechanism, characterized in that the caulking to be. The method according to claim 1, wherein when the push washer is placed on the shoulder of the spindle portion, the upper face of the push washer is caulked so as to be approximately the same height as the highest position of the lower surface of the inverted conical top wall. The hinge mechanism characterized by the above. The hinge mechanism according to any one of claims 1 to 3, wherein one flat washer, the plate member, one flat washer, and two spring washers are sequentially arranged on the main shaft portion.

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