JP2589479Y2 - Tilt hinge for OA equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention is especially applicable to OA of laptop or desktop type word processors and personal computers.
O which is suitable for opening and closing the display body of the device.
The present invention relates to a tilt hinge for an A device.

[0002]

2. Description of the Related Art Conventionally, this kind of tilt hinge uses a display body with respect to an apparatus main body at an opening angle (90 degrees).
~ 135. ), It is necessary to stably hold at an arbitrary position. For this purpose, a mounting member including a mounting base and a bearing plate to be mounted on the apparatus body side, and a mounting hole of the mounting plate of the mounting member at one end. A rotary shaft also serving as a support member for a display body bearing the provided small-diameter portion, and a small-diameter portion was interposed between the large-diameter portion of the rotary shaft and one side surface of the bearing plate while being inserted into the center thereof. A slider washer, a thrust washer provided on the other side surface of the bearing plate while the small diameter portion of the shaft is inserted through the center portion thereof, a spring washer, and a holding washer,
By caulking the end of the small diameter portion, the rotating shaft is configured to rotate only by a predetermined rotational torque, and further, the large diameter portion of the rotating shaft is provided with a mounting portion by shaving both sides thereof in the axial direction, It has been proposed that this mounting portion is provided with two mounting holes.

[0003]

This conventional hinge for OA equipment has been used for a long time because even if the caulking torque is increased, abrasion does not occur between the metal spring washer and the thrust washer which are friction parts. Even after
The initial rotation torque was reduced, and the ability of the display body to stop and stop at any angle was reduced.However, the rotation shaft was composed of a single rod made of special steel, and the diameter of this rod was large. A thick plate-shaped mounting part is created by milling both sides of the part by milling, and it is necessary to drill holes in this mounting part with a drilling machine, so that processing costs are incurred, and further costs are incurred This was an obstacle when trying to down.

[0004] The purpose of this inventor, as in the prior art,
The spring washer does not rotate directly in contact with the bearing plate, and the thrust washer is interposed between the spring washer and the spring washer. The bearing plate will not be worn, so that even after long-term use, the ability to maintain a stable stop at the use opening angle of the display body will not decrease, and further cost reduction will be achieved. The present invention is to provide a tilt hinge for OA equipment which can achieve the above.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a mounting member comprising a mounting base and a bearing plate mounted on the apparatus body, a mounting portion for a molded product, and an axial direction of the mounting portion. A rotating shaft fixed to the rotating shaft, the rotating shaft also serving as a support member of a display body having a small-diameter portion of the rotating shaft portion received in a bearing hole of a bearing plate of the mounting member; A slider washer interposed between the large diameter portion of the rotating shaft portion of the shaft and one side surface of the bearing plate while the small diameter portion is inserted at the center thereof, and rotation of the rotating shaft on the other side surface of the bearing plate. A thrust washer interposed while inserting the small diameter portion of the shaft portion into the center portion thereof,
A spring washer, and a holding washer.The rotating shaft is rotated only when a predetermined rotating torque is applied by caulking an end of a small diameter portion, and the thrust washer is, for example, phosphor bronze. And a metal material having abrasion resistance as described above.

According to the present invention, the thrust washer can be made of a wear-resistant metal material such as phosphor bronze. Further, a cam portion for pressing the switch can be provided on the mounting portion.

[0007]

When the mounting base of the mounting member is fixed to the main body of the apparatus, and the mounting portion of the rotating shaft is fixed to the display body, and the display body is opened and closed, the thrust washer is pressed against the bearing plate. Without a predetermined rotation torque, the display body will not rotate, and the display body can be stably stopped and held at any position at the use opening angle, and one of the conventional rotating shafts can be maintained. Since it is not necessary to cut both sides of the side portion by milling and further to drill a mounting hole with a drill, the processing fee can be largely reduced.

At this time, if the thrust washer is made of a metal material such as phosphor bronze, the thrust washer has high wear resistance.
Even after long-term use, the rotational torque does not decrease due to wear.

In this case, if a cam portion for pressing the switch is provided on the mounting portion at the same time, the cam portion automatically rotates the switch on the side of the apparatus main body provided near the cam portion with the rotation of the rotary shaft. Can be turned on and off.

[0010]

1 shows an embodiment of the present invention. In FIG. 1, a display body 4 using a liquid crystal is mounted on a main body 2 of a word processor provided with a keyboard 1 via a projection 3 so as to be openable and closable. Have been. In the embodiment, the display body 4 is shown in an open state. However, when the display body 4 is not used, the display body 4 is closed, and locking pieces 4a, 4a protruding from the display body 4 are provided on the apparatus body 2 side. It is engaged and locked with the stop holes 2a, 2a.

The hinge for opening and closing the display body 4 is
It is installed in the portion of A in FIG. 1, and its structure is shown in FIG. 2 and subsequent figures.

According to the drawings, in FIGS.
Denotes an attachment member, which is attached to the apparatus main body 2 side. The mounting member 5 includes a mounting base 5a and a bearing plate 5
b is bent so as to present a substantially L-shaped front, and a bearing hole 6 is provided in the bearing plate 5b. Reference numeral 7 denotes a rotary shaft formed by connecting the rotary shaft portion 8 and the mounting portion 9 in the axial direction. The small diameter portion 8c of the rotary shaft portion 8 is supported in the bearing hole 6. The rotating shaft portion 8 is made by turning a special steel rod into a lathe. A boss portion 8a provided at one end portion is provided in the axial direction at one end portion of a mounting portion 9 which is a molded product made of synthetic resin. Insert into the hole 9a and set the spring pin 1 from the radial direction.
0 is press-fitted and connected. At one side of the mounting portion 9, a plate-shaped mounting plate portion 9b is provided, and a mounting hole 9 provided therein is provided.
A part of the display body 4 is fixed by screws 11 and 11 via c and 9c.

The large diameter portion 8b of the rotating shaft 8 and the bearing plate 5
b, a slider washer 12 made of synthetic resin is inserted into the through hole 12a into the small diameter portion 8c of the rotating shaft portion 8.
On the other side of the bearing plate 5b, a spring washer 14 is provided on the other side surface of the bearing plate 5b via a thrust washer 13 made of, for example, phosphor bronze.
c is inserted so as to be inserted. A metal holding washer 15 is further brought into contact with the spring washer 14 by inserting a small-diameter portion 8c into an insertion hole 15a thereof. As shown in FIG. 2, each washer, the bearing plate 5b and the large-diameter portion 8b are pressed against each other. Since the outer diameter of the thrust washer 13 and the outer diameter of the spring washer 14 and the outer diameter of the metal washer 15 and the outer diameter of the spring washer 14 are substantially the same, the spring washer 14 extends over the entire surface. The thrust washer 13 is evenly pressed against the thrust washer 13.

The spring washer 14 is made up of three irregularities 14b and 14c arranged radially and alternately at equal intervals, and the surfaces of the irregularities 14b and 14c are all flat. This allows the spring washer 1
4 is a holding washer 15 having substantially the same outer diameter as this.
As a result, the thrust washer 13 is pressed against the thrust washer 13, and this is a factor in obtaining a large and stable frictional force with the thrust washer 13. Spring pin 1
Numeral 0 protrudes a part from the mounting portion 9 to be a stopper pin, and abuts on a protruding piece 5c protruding from the bearing plate 5b to limit the rotation of the rotary shaft 7 to a certain range.

The caulking torque for caulking the end of the small diameter portion 8c of the rotating shaft 8 can be arbitrarily selected according to the weight of the display body.

FIG. 6 shows another embodiment of the mounting portion of the rotating shaft. The mounting portion 16 is provided with a cam portion 16a which is integrally molded. In this case, there is an advantage that a switch (not shown) for the apparatus main body can be turned on and off with the rotation of the rotary shaft by the cam portion 16a.

Further, each of the above-mentioned mounting portions may be made of a sintered alloy, and even in this case, as in the conventional case,
The manufacturing cost can be reduced as compared with a case where a mounting portion is formed by milling or a mounting hole is formed with a drilling machine. The display body may be of various types of OA equipment such as a personal computer in addition to the word processor of the embodiment.

[0018]

[Effects of the invention] Since the invention was constructed as described above,
The following effects can be obtained.

According to the first aspect of the present invention, the display body can be stably stopped and held at an arbitrary position of the used opening angle without taking up a small installation space, and the stable stop holding ability can be maintained for many years. In addition, the rotating shaft is composed of the rotating shaft and the mounting part, and the mounting part is made of a molded product such as a synthetic resin. Can be done. In addition, the small diameter part of the rotating shaft can be swaged more strongly, and the spring washer fits well with the thrust washer, so it does not wear, so even after many years of use, the display body stops at the use opening angle. The capability can be prevented from being reduced as much as possible.

Further, according to the second aspect of the present invention, the display body can be stably stopped and held at an arbitrary position of the use opening angle without taking up a small space for installation.
This stable stop holding capacity does not change over the years, and the rotating shaft is composed of the rotating shaft and the mounting part, and the mounting part is a molded product such as synthetic resin, so the processing fee is omitted. As a result, the cost can be significantly reduced. Further, a switch of the apparatus main body can be automatically opened and closed by a cam portion which rotates together with the rotating shaft.

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

[Brief description of the drawings]

FIG. 1 is a perspective view of, for example, a word processor embodying the present invention.

FIG. 2 is a front sectional view as viewed from A in FIG.

FIG. 3 is an exploded perspective view of the tilt hinge according to the present invention.

FIG. 4 is a right side view of FIG. 2;

FIG. 5 is a right side view showing a state where the rotary shaft is rotated in the state of FIG. 2;

FIG. 6 is a perspective view showing another embodiment of the mounting portion of the rotating shaft.

[Explanation of symbols]

 2 Apparatus body 4 Display body 5 Mounting member 5a Mounting base 5b Bearing plate 6 Bearing hole 7 Rotating shaft 8 Rotating shaft portion 9, 16 Mounting portion 9b Mounting plate portion 9c Mounting hole 12 Slider washer 13 Thrust washer 14 Spring washer 15 Pressing washer 16a Cam section

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Claims (3)

(57) [Scope of request for utility model registration] 1. A rotary shaft comprising a mounting member including a mounting base and a bearing plate mounted on an apparatus main body side, a mounting portion of a molded product, and a rotary shaft portion fixed to the mounting portion in an axial direction, A rotary shaft serving also as a support member of a display body in which a small-diameter portion of the rotary shaft portion is received in a bearing hole of a bearing plate of the mounting member; a large-diameter portion of the rotary shaft portion of the rotary shaft; and one side surface of the bearing plate And a slider washer interposed while inserting the small-diameter portion in the center thereof, and the small-diameter portion of the rotating shaft portion of the rotating shaft is interposed in the other portion of the bearing plate while being inserted therethrough. Thrust washer, spring washer, and presser washer,
By caulking the end of the small-diameter portion, the rotating shaft rotates only when a predetermined rotating torque is applied, and the thrust washer is made of a wear-resistant metal material such as phosphor bronze. A tilt hinge for OA equipment, characterized by comprising: 2. A rotary shaft comprising a mounting member including a mounting base and a bearing plate mounted on the apparatus main body side, a mounting portion for a molded product, and a rotary shaft fixed to the mounting portion in an axial direction, A rotary shaft serving also as a support member of a display body in which a small-diameter portion of the rotary shaft portion is received in a bearing hole of a bearing plate of the mounting member; a large-diameter portion of the rotary shaft portion of the rotary shaft; and one side surface of the bearing plate And a slider washer interposed while inserting the small-diameter portion in the center thereof, and the small-diameter portion of the rotating shaft portion of the rotating shaft is interposed in the other portion of the bearing plate while being inserted therethrough. Thrust washer, spring washer, and presser washer,
By caulking the end of the small diameter portion, the rotating shaft rotates only when a predetermined rotating torque is applied, and a cam portion for simultaneously pressing a switch is provided on the mounting portion. A tilt hinge for OA equipment, characterized in that: 3. A rotary shaft comprising: a mounting member including a mounting base and a bearing plate mounted on an apparatus body side; a mounting portion for a molded product; and a rotary shaft portion fixed to the mounting portion in an axial direction, A rotary shaft serving also as a support member of a display body in which a small-diameter portion of the rotary shaft portion is received in a bearing hole of a bearing plate of the mounting member; a large-diameter portion of the rotary shaft portion of the rotary shaft; and one side surface of the bearing plate And a slider washer interposed while inserting the small-diameter portion in the center portion thereof, and the small-diameter portion of the rotating shaft portion of the rotating shaft is interposed in the other side surface of the bearing plate while being inserted in the center portion. Thrust washer, spring washer, and presser washer,
By caulking the end of the small-diameter portion, the rotating shaft rotates only when a predetermined rotating torque is applied, and the thrust washer is made of a wear-resistant metal material such as phosphor bronze. Wherein the mounting portion is provided with a switch pressing cam portion at the same time.