JPH07103225A - Opening/closing suppressing device for movable body - Google Patents

Abstract

PURPOSE:To stop the opening/closing position of a movable body in an optional position by composing an opening/closing suppressing device for movable body of a plastic braking member, which is a longitudinal slit fitted to a rotary shaft to the movable body, ands a holding metal fitting, which is fixed on the movable body and brought in tight contact with the braking member outer circumferential face, and fastening the rotary shaft via the holding metal fitting by means of the braking member. CONSTITUTION:In an opening/closing suppressing device 1, a holding metal fitting 6 is fixed to a movable body 22 by means of a bolt 23, while a cylindrical braking member 5 tightly fitted to a rotary shaft is provided, and the rotary shaft is fixed to an apparatus main body. The braking member 5 is made of an abrasion resistant engineering plastic, while the holding metal fitting 6 is made of spring steel. The holding metal fitting 6 is provided with a curve part 8 and straight line parts 9, 10, and the curve part 8 is in tight contact with most of the outer circumferential face of the braking member 5. When the movable body 22 is opened/ closed, the holding metal fitting 6 and the braking member 5 make their rotational movement, while the rotary shaft is stationary. The holding metal fitting 6 is fastened by a screw member 7 so as to press the braking member inside 5 in the radius direction. The braking member 5 provided with a longitudinal slit is easily shrunk by pressing so as to fasten the rotary shaft, so that the movable body 22 can be stopped in any opening/closing position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for suppressing opening / closing of a movable body such as a portable small personal computer or a liquid crystal display in a word processor, and a device for suppressing the opening / closing of a movable body having a simpler structure. .

[0002]

2. Description of the Related Art Electronic devices such as sub-notebook type, notebook type, laptop type personal computers and word processors are miniaturized as much as possible in consideration of the convenience of carrying, and the liquid crystal display unit can be opened and closed. To do. The liquid crystal display section needs to stand still at an arbitrary position opened approximately 120 degrees from the right angle with respect to the main body of the device, and the electronic circuit board exists inside the entire device and is complicatedly wired. It is preferable that the area is as small as possible.

A conventional opening / closing suppressing mechanism used for opening / closing the liquid crystal display unit is composed of a coil spring that is tightly fitted to the rotating shaft and has both ends fixed to a casing, and the elastic force of the spring tightens the rotating shaft of the display unit. , The display is stopped at an arbitrary opening position. In this opening / closing suppressing mechanism, it is necessary to always tighten the rotating shaft of the display unit with a strong spring elasticity, and it is not possible to adjust the opening / closing operation of the display unit. Further, if the frequency of opening and closing the display unit is high, the contact portion of the rotary shaft is abraded by a strong spring resilience, which causes wear residue and increases frictional resistance, which makes it more difficult to open and close the display unit.

[0004]

As a lid opening / closing device for an electric product, an actual product of the present application, Shokai 56-140354.
No. 57-115345, No. 58-299
45, 58-148165, 58-1
No. 71468, No. 58-174463, No. 5
8-195766 and the like. However, since all of these devices are arranged in the vertical direction, they cannot be installed in portable electronic devices such as small personal computers and word processors having highly integrated circuits.

As a result of repeated studies on an opening / closing suppressing device that can be used for a liquid crystal display unit, the present applicant has proposed Japanese Patent Application Nos. 3-315419 and 4-348633. According to these inventions, the liquid crystal display unit can be stopped at an arbitrary position in a portable small personal computer or word processor, and it has already been installed in electronic devices of various companies and has been well received.

The present invention has been proposed in order to further improve an opening / closing suppressing device such as a liquid crystal display unit. It is an object of the present invention to be arranged on the movable body or the device body coaxially with a rotary shaft for a movable body such as a liquid crystal display unit, and further simplification of the structure enables further downsizing and further cost reduction. An object of the present invention is to provide an open / close suppressing device that can be manufactured.

[0007]

In order to achieve the above object, an opening / closing suppressing device 1 according to the present invention is provided in a downward protruding portion of a liquid crystal display unit 2 in a portable small personal computer as illustrated in FIG. Just place it. The movable body to which the opening / closing restraint device 1 can be attached is, for example, a sub-notebook type, a notebook type, a laptop type personal computer, a word processor liquid crystal display unit, a vehicle-mounted TV or a fish finder display unit, and a pocket computer. Also, the present invention can be applied to a display unit that can be opened / closed in a television integrated video, a stand of a portable television, or the like.

Even if the opening / closing suppressing device 1 is installed on the liquid crystal display unit 2, that is, the movable body itself as shown in FIG.
It may be installed in the main body of the device. This device 1 can be configured with only one of the two rotary shafts 3 as shown in FIG. 2, or with both rotary shafts as shown in FIG.

As shown in FIGS. 2 and 3, the opening / closing suppressing device 1 includes a cylindrical braking member 5 (see FIG. 4) closely fitted to the rotary shaft 3 for the movable body, and the rotary shaft 3. On the contrary, a holding metal fitting 6 fixed to the main body of the apparatus or a movable body and a screw member 7 for tightening the holding metal fitting inward are provided. Generally, the braking member 5 is made of wear-resistant engineering plastic, and the holding metal fitting 6 is made of spring steel.

The holding metal fitting 6 has a curved portion 8 that is in close contact with most of the outer peripheral surface of the braking member 5, and linear portions 9 and 10 that extend from both ends of the curved portion. A through hole 11 through which the screw member 7 is inserted is provided in at least one of the above. The curved portion 8 of the holding metal fitting 6 is in close contact with most of the outer peripheral surface of the braking member 5 and surrounds the outer peripheral surface as much as possible to effectively tighten the holding metal fitting 6 inward with the screw member 7. To do. On the other hand, the linear portions 9 and 10 can be extended in various directions as shown in FIG. 3, FIG. 6 or FIG.

As shown in FIG. 4, the braking member 5 is formed with a vertical slit 15 extending from one end surface to the other end surface, which facilitates inward deformation of the braking member 5. Preferably, a rectangular protrusion 16 is provided on the outer peripheral surface of the braking member 5, and the protrusion is fitted into the notch 17 (FIG. 3) of the holding metal fitting 6 so that the braking member rotates or stands still together with the holding metal fitting 6.
The inner peripheral surface becomes the friction surface.

The screw member 7 is capable of tightening the holding metal fitting 6 inward and adjusting the tightening force of the rotating shaft 3 by the braking member 5 by adjusting the screwing amount. The screw member 7 may be, for example, a flat head screw with a cross hole (see FIG. 2), a hexagon head screw (see FIG. 6) or a countersunk screw (see FIG. 7).
As described above, it may be screwed into the screw hole 25 of the other straight portion 10 or may be screwed directly into the movable body or the device body.

[0013]

[Function] Movable body, that is, liquid crystal display unit 2 (FIG. 2)
In the opening / closing suppressing device 1 attached to the display part 2, when the display part 2 is opened / closed, the holding member 6 and the braking member 5 rotate, while the rotary shaft 3 for the display part is stationary. The holding metal fitting 6 is tightened inward by the screw member 7,
The braking member 5 is pressed inward in the radial direction. Braking member 5
Since the vertical slit 15 is provided, it is easily contracted by being pressed inward in the radial direction, so that the rotary shaft 3 of the display unit 2 can be easily compressed.
Is tightened, and the display unit 2 is stopped at an arbitrary open / close position.

The tightening force of the rotating shaft 3 for the display unit 2 by the braking member 5 can be easily adjusted by the screwing amount of the screw member 7, and the opening / closing operation can be set according to the preference of the user. Further, the protrusion 1 provided on the outer peripheral surface of the braking member 5
6, when the braking member rotates or stands still together with the holding metal fitting 6 and its inner peripheral surface becomes a friction surface, effective tightening is possible even for a movable body having a relatively large weight.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIGS. 2 and 3 show an opening / closing suppressing device 1 according to the present invention. As shown in FIG. 1, the opening / closing suppressing device 1 is arranged on the liquid crystal display unit 2 of the portable small personal computer 21, and the holding metal fitting 6 is fixed to the downward projecting portion 22 of the display unit 2 with bolts 23, 23. The opening / closing suppressing device 1 includes a cylindrical braking member 5 that is tightly fitted to the rotating shaft 3, and the rotating shaft 3 is fixed to a side wall of the device body 24. The braking member 5 is made of wear-resistant engineered plastic (for example, carbon-containing polyacetal resin), and the holding metal fitting 6 is made of spring steel.

The holding metal fitting 6 has an annular curved portion 8 having a side surface of approximately 3/4 circle, and linear portions 9 and 10 extending from both ends of the curved portion. Curved part 8 of holding metal fitting 6
So that it can come into close contact with most of the outer peripheral surface of the braking member 5,
Its inner diameter is slightly larger than the outer diameter of the braking member 5, and its lateral width is almost equal to that of the braking member 5. On the side surface of the device, one straight portion 10 extends tangentially from the end of the curved portion, and has a screw hole 25 and a through hole 26 for inserting the bolt 23. Further, the other linear portion 9 extends diametrically outward from the end of the curved portion substantially in parallel with the one linear portion 10, and although it is shorter than the linear portion 10, the through hole 11 through which the screw member 7 is inserted is formed.
Are provided coaxially with the screw hole 25 in the vertical direction.

As shown in FIG. 4, the braking member 5 is formed with an elongated vertical slit 15 extending from one end surface to the other end surface. Notches 17 and 1 provided at one end of the braking member 5 with angular protrusions 16 and 16 diametrically outward on the outer peripheral surface thereof, and the protrusion 16 being provided at one end of the holding metal fitting 6 when the braking member 5 is stored.
Insert into 7 respectively. With this configuration, the braking member 5 rotates or stands still together with the holding metal 6, and the inner peripheral surface of the braking member 5 comes into contact with the outer peripheral surface of the rotating shaft 3 to form a friction surface.

The flat-head screw 7 with a cross hole is inserted vertically through the through hole 11 provided in the other linear portion 9 of the holding metal fitting 6 from above and screwed into the screw hole 25 provided in the one linear portion 10. As a result, when the screw member 7 is screwed in, the holding metal fitting 6 is tightened inward, and the tightening force of the rotating shaft 3 can be adjusted by the screwing amount.

The receiving plate 27 in which the rotary shaft 3 is vertically planted is
It is fixed in advance to the adjacent side wall of the device body 24. Rotating shaft 3
2 annular grooves (not shown) are provided on the circumferential surface of the annular member at intervals corresponding to the length of the braking member 5 or the lateral width of the holding metal fitting 6, and the E metal fitting 28 is fitted into each annular groove. The washer 29 is supported by. The E metal fittings 28, 28 prevent the braking member 5 and the holding metal fitting 6 from coming off from the rotating shaft 3.

To install the opening / closing suppressing device 1 of the present invention, the other rotating shaft 30 is pivotally attached by a known means, and then the holding metal fitting 6 having the braking member 5 fitted therein is fitted to the rotating shaft 3. The holding metal fitting is bolted to the lower protruding portion 22 of the display unit 2. When the opening / closing suppressing device 1 is fixed, the rotating shafts 3 and 30 of the display unit 2 are arranged coaxially in the lateral direction.

When the display unit 2 of the small personal computer 21 is opened / closed, the open / close suppression device 1 is also opened together with the display unit.
The holding metal fitting 6 and the braking member 5 are rotated, and the rotating shaft 3 is stationary at this time. The holding metal fitting 6 is tightened inward by the screw member 7 and presses the braking member 5 inward in the radial direction. Since the braking member 5 has the vertical slits 15, the braking member 5 is easily contracted by being pressed inward in the radial direction, and thus the rotating shaft 3 is rotated.
The display unit 2 can be stopped at any open / close position by tightening.

The tightening force of the rotating shaft 3 of the display unit 2 by the braking member 5 can be easily adjusted by the screwing amount of the screw member 7 for tightening the holding metal 6, and the opening / closing operation can be set according to the user's preference. It's easy. Further, when the protrusion 16 provided on the outer peripheral surface of the braking member 5 causes the braking member to rotate or rest together with the holding metal member 6 and the inner peripheral surface thereof becomes a friction surface, even a movable body having a relatively large weight is effective. Can be tightened.

In another example of installation of the opening / closing suppressing device 1 shown in FIG. 5, the receiving plates 27, 27 in which the rotary shaft 3 is vertically planted are fixed coaxially to both side walls of the lower protruding portion 22 of the liquid crystal display unit. . In this case, one rotation shaft may penetrate the lower protrusion 22 in the lateral direction. Next, the holding metal fitting 6 to which the braking member 5 is fitted is fitted to each rotary shaft 3, and the both holding metal fittings 6 and 6 are bolted to the adjacent side walls of the device main body 24.

When the liquid crystal display unit is opened / closed, the shaft 3 rotates together with the display unit, and the holding metal fitting 6 and the braking member 5 of the opening / closing suppression device 1 are stationary. Screw member 7
The holding metal fitting 6 which is fastened by presses the braking member 5 inward in the radial direction, and the braking member 5 tightens the rotary shaft 3 by pressing inward in the radial direction. Since this tightening action is performed on both sides of the downward projecting portion of the display unit, the display unit can be more stably stopped at any opening / closing position.

FIG. 6 shows a modified example of the present invention. In the opening / closing suppressing device 35, the holding metal fitting 36 has an annular curved portion 37 whose side surface is almost a complete circle and straight lines extending from both ends of the curved portion. Parts 38 and 39. On the side surface of the device, the straight portions 38 and 39 are curved in opposite directions from the ends of the adjacent curved portions and further extend diametrically outward in parallel with each other.

A through hole 40 is provided in each of the straight portions 38 and 39, a hexagon head screw 41 for fastening the holding metal fitting 36 is inserted into one of the through holes 40, and an opening / closing suppressing device 35 is inserted into the other through hole 40. The fixing bolt 42 may be inserted. The bolts 41 and 42 are screwed into the terminal attachment portion 43 of the movable body or the device body. In the drawing, straight parts 3 of different length
Although one through hole is provided in each of 8 and 39, the lengths of both linear portions can be set arbitrarily, and it is also possible to provide two or more through holes in each linear portion.

In the opening / closing restraint device 45 of FIG. 7, the holding metal fitting 46 has an annular curved portion 47 whose side surface is almost a complete circle.
And linear portions 48 extending from both ends of the curved portion,
49 and. On the side surface of the device, straight portions 48, 49
Bends in the opposite direction from the ends of the adjacent curved portions, and then extends linearly in the opposite direction in the tangential direction.

Through-holes 50 and 51 are provided in the linear portions 48 and 49, and a countersunk screw 52 for tightening the holding metal fitting 46 is inserted into the through-hole 50 in each linear portion, and an opening / closing suppressing device is provided in the through-hole 51. The fixing screw 53 of 45 is inserted. The screws 52 and 53 are the mounting portions 5 of the movable body or the device body.
4 is screwed in, and the screw 53 is loosened when tightening the screw 52. Since the through hole 50 has a larger diameter than the shaft diameter of the countersunk screw 52 and is eccentric, when the screw 52 is screwed in, the linear portions 48 and 49 are moved parallel to the surface of the mounting portion 54. Tighten the holding metal fitting 46.

[0029]

The opening / closing suppressing device according to the present invention is installed in a device body or a movable body together with a rotary shaft for the movable body,
Since the movable body can be arranged coaxially with the liquid crystal display portion of a small personal computer or the rotation axis of a vehicle-mounted television to further reduce the size, the space occupied by the movable body can be extremely small. Therefore, even if the main body of the device is an electronic device such as a personal computer or a word processor in which the circuit board exists inside and the wiring is complicated, the opening / closing suppressing device can be sufficiently attached.

In the opening / closing suppressing device of the present invention, when the movable body such as the liquid crystal display unit is opened / closed, the force for tightening the rotating shaft of the movable body by the cylindrical braking member can be adjusted by the screwing amount of the screw member. The movable body equipped with this opening / closing restraint device can be set to open / close operation according to the user's preference, and can be easily stopped at any position from the closed position to the opening limit position. Prevents the body from rapidly closing due to its own weight.

Further, in the opening / closing suppressing device of the present invention, even if the frequency of opening / closing of the movable body is high, there is almost no wear residue on the contact portion, and the opening / closing operation of the movable body is constant even if the use is continued for a long time. Even if the elasticity of the elastic member is reduced and the elastic member cannot be stopped at an arbitrary opening position, it does not occur. Since the opening / closing suppressing device of the present invention has a relatively small number of parts, the manufacturing cost is further reduced.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an example in which the opening / closing suppressing device of the present invention is installed in a small personal computer.

FIG. 2 is a partial side view showing a state in which the device of the present invention is attached to a lower protruding portion of a liquid crystal display unit.

FIG. 3 is an enlarged cross-sectional view showing the device of the present invention taken along the line AA of FIG.

FIG. 4 is an enlarged perspective view showing a braking member used in the present invention.

FIG. 5 is a partial side view showing an example in which the device of the present invention is installed in a device body of a small personal computer.

FIG. 6 is an enlarged cross-sectional view showing a modified example of the present invention.

FIG. 7 is an enlarged sectional view showing another modification of the present invention.

[Explanation of symbols]

 1 Opening / Closing Control Device 2 Liquid Crystal Display Section 3 Rotating Shaft 5 Braking Member 6 Holding Metal 7 Screw Member 8 Curved Part of Holding Metal 15 Vertical Slit of Braking Member 16 Protrusion 17 Braking Member Notch

Claims (4)

[Claims] 1. A rotary shaft for a movable body fixed to a movable body or a device body, a cylindrical plastic braking member tightly fitted to the rotary shaft, and a braking member fixed to the device body or the movable body. The holding metal fitting has a holding metal fitting having a curved portion in close contact with most of the outer peripheral surface, and a screw member for tightening the holding metal fitting inward. The plastic braking member has a vertical slit extending from one end surface to the other end surface. An opening / closing suppression device that tightens the circumferential surface of the rotating shaft inward with a braking member via the. 2. A braking member is provided with a protrusion on an outer peripheral surface thereof, and the protrusion is fitted into a notch of the holding metal fitting so that the braking member rotates or stops together with the holding metal fitting, and an inner peripheral surface thereof becomes a friction surface. The apparatus according to item 1. 3. The device according to claim 1, wherein the holding metal fitting is made of spring steel, and the braking member is made of wear-resistant engineering plastic. 4. The apparatus according to claim 1, wherein the movable body constitutes a portable small personal computer, a liquid crystal display section of a word processor, a vehicle-mounted television or a display section of a fish finder.