JP2592164Y2 - Switchgear for display - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing device capable of stopping a display at an arbitrary open position, and more particularly to a device capable of adjusting a torque.

[0002]

2. Description of the Related Art Heretofore, in this type of display opening / closing device, one hinge device is disposed on each of the left and right sides of a display housing. Each of the above-mentioned conventional hinge devices is fixed to one of the case body and the display housing, and extends through the other of the case body and the display housing; and a case body through which the support shaft passes. There was provided a through-hole formed in one of the other of the display housing and a pair of wave washers which are passed through the support shaft and are located on both sides of the other of the case body and the display housing.

One end of the support shaft is caulked, and the wave washers on both sides are pressed against either one of the two sides of the case body and the display housing to generate a frictional force.

[0004]

However, in the above-mentioned conventional hinge device, one end of the support shaft is caulked,
Once the support shaft is swaged, there is a problem that the torque cannot be adjusted thereafter. Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a hinge device capable of adjusting torque.

[0005]

SUMMARY OF THE INVENTION The present invention is to achieve the above-mentioned object, and its contents will be described below using embodiments shown in the drawings. The invention according to claim 1
Is characterized by the following four points. First, the hinge device (3
(0) is the case body (20) and display housing (40).
(For example, the case body 2 via the base 50)
0) is fixed.

[0006] In addition, the hinge device (30) includes a support shaft (6).
0), a through hole (71), and an elastic member (80) . Up
The support shaft (60) is connected to the case body (20) and the display housing.
The other (for example, display housing)
Extending through an arm 70) fixed to the ring 40.

The support shaft (60) passes through the through hole (71).
Whether the case body (20) and display housing (40)
Or the other (for example, the arm 7 of the display housing 40).
0). The elastic member (80) has a support shaft (6
0) through the case body (20) and display housing
(40).

Second, the tip of the support shaft (60) is
A thread groove (63) is formed along the direction. In addition to this,
One of the display body (20) and the display housing (40)
To the other (eg, arm 70 of display housing 40)
Screw groove of support shaft (60) projecting from formed through hole (71)
(63) has a nut (1) whose outer diameter is larger than the inner diameter of the through hole (71).
00,101).

Third, the case body (20) and the display
With the housing (40) (for example, through the base 50).
The case body 20) has a shaft hole (51), an annular projection (54),
Is provided. The support shaft (60) passes through the shaft hole (51). Said
The annular protrusion (54) is fitted with the elastic member (80), and the shaft hole (5
It protrudes annularly around 1). And the annular projection (54)
Has a non-circular shape.

Fourth, the thickness of the elastic member (80) is adjusted by
It is formed thicker than the depth of the bottom inside the portion (54).

[0011]

Therefore, according to the display opening / closing device of the first aspect, by changing the screwing amount of the nut (100, 101) into the screw groove (63) of the support shaft (60), the case body (20) is The distance facing the display housing (40) can be changed.

Therefore, when the distance between the case body (20) and the display housing (40) changes, the amount of compression of the elastic member (80) located within the distance changes. As a result, the frictional force between the elastic member (80) and any one of the case body (20) and the display housing (40) (for example, the arm 70 of the display housing 40) changes. Therefore, by adjusting the screwing amount of the nut (100, 101), the display housing with respect to the case body (20) is adjusted.
The rotation torque of (40) can be adjusted.

At this time, the elastic member (80) has a non-circular shape.
It is non-rotatably held inside the annular projection (54). to this
In addition, the maximum tightening position of the nut (100, 101) is
One of the main body (20) and the display housing (40)
(For example, the arm 70 of the display housing 40)
It is regulated by contacting the annular projection (54).

[0014]

Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 to 6 show an embodiment of the present invention. FIG. 1 is an exploded perspective view of a hinge device, FIG. 2 is a schematic side view of a personal computer, and FIG.
4 is a plan view of the hinge device, FIG. 4 is a rear view of the hinge device, FIG. 5 is a cross-sectional view taken along line VV of FIG. 3, and FIG. 6 is VI-VI of FIG.
The sectional views along the line are shown.

In FIG. 2, reference numeral 10 denotes a laptop personal computer (hereinafter referred to as "PC").
The personal computer 10 is roughly divided into a case body 20 having a computer mechanism (not shown) incorporated therein and a keyboard (not shown) on the surface thereof, and a pair of left and right hinge devices provided on both left and right sides of the case body 20. A display housing 40 is provided so as to be openable and closable via 30 and incorporates a display such as a color liquid crystal.

As shown in FIG. 1, each of the hinge devices 30 is roughly divided into a base fixed to the case body 20.
A support shaft 60 fixed to the base 50 and extending laterally through the base 50; one end of the support shaft 60 is fixed to the protruding end of the support shaft 60; And an elastic member 80 positioned within the space between the arm 70 and the base 50 and passed through the protruding end of the support shaft 60.

As shown in FIG. 1, the support shaft 60 has a large head 61 and a shaft 62 extending laterally from the head 61, and is made of, for example, metal. As shown in FIG. 1, the head 61 is formed in a non-circular shape, for example, an oval shape. 3, the total length of the shaft portion 62 is set to be longer than the total thickness of the base 50, the arm 70, and the elastic member 80. Further, as shown in FIG. 1, a thread groove 63 is formed in the shaft portion 62 from the front end portion to a halfway length. The large-diameter nut 100 and the small-diameter nut 101 are screwed into the thread groove 63 of the shaft portion 62 and screwed.

As shown in FIG. 1, the base 50 has an oval shape as a whole.
A shaft hole 51 having an inner diameter substantially equal to the diameter of the shaft is formed, and the whole is integrally formed of a plastic having appropriate rigidity. The upper and lower ends of the base 50 are
A pair of mounting holes 52, 52 through which screws 110 screwed into the side surfaces of
Are formed (FIG. 5).

As shown in FIGS. 4 to 6, a concave portion 53 into which a head portion 61 of a support shaft 60 fits is formed around a shaft hole 51, as shown in FIGS. The concave portion 53 has a non-circular cross section, for example, an oval shape according to the shape of the head portion 61, and prevents the support shaft 60 from rotating with respect to the base 50. On the surface of the base 50, as shown in FIG.
Are fitted, and an annular projection 54 is formed to project substantially annularly around the shaft hole 51. And the annular protrusion 54
The cross section is formed in a non-circular shape, for example, an oval shape.

As shown in FIG. 1, the elastic member 80 has a substantially donut shape, and has a center hole 81 having an inner diameter substantially equal to the outer diameter of the shaft portion 62 of the support shaft 60 at the center thereof. The outer diameter is formed in a non-circular shape, for example, an oval shape, and is integrally formed of, for example, urethane rubber having appropriate elasticity and rigidity. The thickness of the elastic member 80 is as shown in FIGS.
As shown in FIG. 6, the base 50 is formed to be thicker than the depth of the bottom inside the annular protrusion 54.

As shown in FIG. 1, the arm 70 has a vertically long and thin oval thin plate shape and is formed of, for example, a metal plate. The lower end of the arm 70 has a shaft
A through hole 71 having an inner diameter substantially equal to the outer diameter of 62 is formed. In the middle of the upper end and length of the arm 70,
Screw 12 screwed into the side of the display housing 40
A pair of mounting holes 72, 72 through which 0 passes are formed (FIG. 5).

As shown in FIG. 1, a metal washer is used for the washer 80.
The outer diameter of the through-hole 71 is substantially equal to the outer diameter of the through-hole 71, and the outer diameter thereof is set to be larger than the inner diameter of the through-hole 71 of the arm 70. Grease (not shown) is applied to the surface of the washer 80. The grease is for reducing frictional resistance between the arm 70 and the washer 80 and preventing the nuts 100 and 101 from loosening.

As the large and small nuts 100 and 101, metal nuts are used. Next, a procedure for attaching the hinge device 30 having the above-described components will be described. First,
As shown in FIGS. 4 to 6, the shaft portion 62 of the support shaft 60 is
And the head 61 is fitted into the concave portion 53 of the base 50. After that, screws 110 passed through each mounting hole 52 of the base 50
Are screwed into the side surfaces of the case body 20 as shown in FIG. 5, and the support shaft 60 is fixed to the case body 20 via the base 50 so as not to rotate.

Next, as shown in FIGS. 5 and 6, an elastic member 80 is attached to the shaft portion 62 of the support shaft 60 protruding from the shaft hole 51 of the base 50.
Then, the elastic member 80 is fitted into the annular projection 54 on the surface of the base 50 through the center hole 81. Of course, the elastic member 80
Into the annular projection 54 of the base 50 in advance,
You may make it pass through the shaft part 62 of the support shaft 60 later. On the other hand, as shown in FIG. 5, the arm 70 is screwed into the side of the display housing 40 with a screw 120 passing through each mounting hole 72, and the arm 70 is connected to the display housing 40.
In advance.

Thereafter, the through hole 71 of the arm 70 is passed through the shaft portion 62 of the support shaft 60 as shown in FIGS. Thus, by passing the through hole 71 of the arm 70 through the shaft portion 62 of the support shaft 60, the display housing 40 is rotatably supported by the shaft portion 62 of the support shaft 60 fixed to the case body 20. of course,
After passing the through hole 71 of the arm 70 through the shaft portion 62 of the support shaft 60,
The arm 70 may be screwed to the display housing 40.

Next, as shown in FIGS. 5 and 6, a washer 80 is passed through the shaft portion 62 of the support shaft 60, and then the thread groove 63 of the shaft portion 62 is formed.
Then, the large diameter nut 100 is screwed in, and the small diameter nut 101 is further screwed in to prevent the arm 70 from falling off. In this way, when the hinge device 30 is attached, the elastic member 80 is compressed and deformed between the bottom inside the annular projection 54 of the base 50 and the side surface of the arm 70.

On the other hand, the display housing 40 is
As shown in FIG. 5, when the arm 70 is opened and closed with respect to the case body 20, the arm 70 rotates about the shaft portion 62 of the support shaft 60. At this time,
Since the elastic member 80 is non-rotatably held inside the annular projection 54 of the base 50, frictional resistance is generated between the elastic member 80 and the arm 70. Therefore, the display housing 40 is stopped at the position where the rotation is stopped by the frictional force with the elastic member 80.

At this time, since the elastic member 80 is made of urethane rubber, no abnormal noise is generated even when the elastic member 80 is rubbed with the metal arm 70, the operation sound is quiet, and the movement is smooth.
Operability is also good. On the other hand, the frictional force between the arm 70 and the elastic member 80 is proportional to the amount of compression of the elastic member 80. For example, when the nuts 100 and 101 are tightened deeply, the amount of compression of the elastic member 80 increases. Therefore, the frictional force between the arm 70 and the arm 70 increases, and the rotational torque increases. On the other hand, when the nuts 100 and 101 are tightened shallowly, the amount of compression of the elastic member 80 decreases. Therefore, the frictional force between the arm 70 and the arm 70 decreases, and the rotational torque decreases.

Therefore, the rotational torque can be adjusted by adjusting the screwing amounts of the nuts 100 and 101. As shown in FIGS. 5 and 6, the range of the thread groove 63 of the shaft portion 62 of the support shaft 60 is longer than the sum of the thicknesses of the nuts 100 and 101 and the length of the shaft portion 62 in the range without the thread groove 63. But,
The thickness is set to be smaller than the total thickness of the base 50, the elastic member 80, the arm 70, and the washer 80.

The maximum tightening position of the nuts 100 and 101 is regulated by the side surface of the arm 70 abutting on the end surface of the annular projection 54 of the base 50. For this reason, the position immediately before the arm 70 comes into contact with the annular projection 54 of the base 50 is set to the optimum torque, thereby preventing the nuts 100 and 101 from being unnecessarily strongly tightened. When the optimum torque is set, the display housing 40 is
From about 20 to about 20 from the state opened almost vertically, about 40
The display housing should be tilted within degrees
40 is set to rest in a free position (FIG. 2).

Although not shown, the maximum open position of the display housing 40 is regulated by a stopper or the like. Further, when the display housing 40 is tilted by more than about 40 degrees toward the case body 20 from the state where the display housing 40 is opened substantially vertically, the display housing 40 closes by its own weight. At this time, the frictional force of the elastic member 80 acts and the display housing 40
Closes slowly and quietly toward the case body 20.

In the embodiment shown in the drawings, the support shaft 60 is fixed to the case body 20 via the base 50, and a through hole 71 through which the support shaft 60 passes is formed in the arm 70.
Is fixed to the display housing 40. However, the present invention is not limited to this. The support shaft 60 may be fixed to the display housing 40, and a through hole through which the support shaft 60 passes may be formed in the case body 20.

In the embodiment shown in the drawings, the support shaft 60
Two large and small nuts 100 and 101 are screwed into the thread groove 63 of the shaft portion 62 to prevent the nuts 100 and 101 from loosening. However, the present invention is not limited to this, and only one nut may be used.

[0034]

[Effects of the Invention] The present invention is configured as described above, and has the following effects. Claim 1
According to the display opening and closing device described, by rotating the nut, the amount of compression of the elastic member is changed,
Since the frictional force can be increased or decreased, the torque can be easily adjusted.

At this time, the elastic member has a non-circular annular shape.
It is held non-rotatably inside the projection. In addition to this
The maximum tightening position of the
Either the other side of the housing abuts the annular projection
It is regulated by. For this reason, the case body and the display
One of the housing and the other comes into contact with the annular projection
The position immediately before is set to the optimum torque, and unnecessary nuts
Can be prevented from being strongly tightened.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a hinge device.

FIG. 2 is a schematic side view of a personal computer.

FIG. 3 is a plan view of the hinge device.

FIG. 4 is a rear view of the hinge device.

FIG. 5 is a sectional view taken along the line VV of FIG. 3;

FIG. 6 is a transverse sectional view taken along the line VI-VI in FIG. 3;

[Description of Signs] 10 Personal computer 20 Case body 30 Hinge device 40 Display how
Jing 50 Base 51 Shaft hole 52 Mounting hole 53 Recess 54 Annular projection 60 Support shaft 61 Head 62 Shaft 63 Screw groove 70 Arm 71 Through hole 72 Mounting hole 80 Elastic member 81 Center hole 90 Washer 100 Large diameter nut 101 Small diameter nut 110 screw 120 screw

Claims (1)

(57) [Scope of request for utility model registration] An opening / closing device for a display, comprising: a case main body; and a display housing that is supported by the case main body via a hinge device so as to be openable and closable and can be fixed at an arbitrary opening angle by the hinge device. The hinge device is fixed to one of the case body and the display housing, and extends through one of the case body and the display housing. The other of the case body and the display housing through which the support shaft passes. Or a through-hole formed on the other side, and an elastic member that is passed through the support shaft and is located between the case body and the display housing. A through hole formed in one of the case body and the display housing while forming a groove Et The screw groove of the supporting shaft that projects, the look threaded large nut outer diameter than the inner diameter of the through hole, and the case body and the display housing noise
Either one of them has a shaft hole through which the support shaft passes, and the elastic member fits into the shaft hole so as to protrude annularly around the shaft hole.
And a non-circular annular projection that projects out, and the thickness of the elastic member is reduced by the depth of the bottom inside the annular projection.
An opening and closing device for a display, characterized in that the opening and closing device is formed to be thicker .