JPH0521079U - Tilt hinge for OA equipment - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To prevent wear of friction members as much as possible so that the stop holding ability of the display body does not diminish at any position in the opening angle of use even after many years of use There is provided a tilt hinge for OA equipment configured as described above. [Structure] A mounting member 5 composed of a mounting base and a bearing plate, which is mounted on the main body 2 of the apparatus, and also serves as a supporting member for a display body 4 in which a bearing plate 5b of the mounting member bears a small diameter portion 7a provided at one end thereof. The rotating shaft 7, a slider washer 9 interposed between the large diameter portion 7b of the rotating shaft and the bearing plate while inserting the small diameter portion in the central portion thereof, and the central portion of the other side surface of the bearing plate at the central portion thereof. It consists of a thrust washer 10, a spring washer 11, and a holding washer 12 that are inserted while inserting the small diameter portion, and only when a predetermined rotational torque is applied to the rotary shaft by crimping the end of the small diameter portion. It was configured to rotate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tilt hinge for OA equipment, which is particularly suitable for opening and closing a display body of an OA equipment such as a laptop or tabletop word processor or a personal computer.

[0002]

[Prior Art]

 Conventionally, this type of tilt hinge requires the display body to be stably stopped and held at an arbitrary position at the use opening angle (90 ° to 135 °) with respect to the device body, and as a configuration for this, it is attached to the device body. The mounting base and the bearing plate are bent at right angles to each other, and a bearing hole is formed in the bearing plate of the mounting member that has an angled cross section.The rotary shaft with the flange is inserted through this bearing hole, and the bearing plate is sandwiched. Slider washers and spring washers on the left and right sides are inserted in the center of the rotary shaft, and the ends of the rotary shaft are caulked to generate frictional force on both sides of the bearing plate, which causes the rotary shaft to move to the specified torque. Use the display body fixed to this rotating shaft so that it rotates only by It is known that the device can be stopped and held at an arbitrary position.

[0003]

[Problems to be solved by the device]

 This conventional tilt hinge for OA equipment requires a strong caulking torque because it is necessary to hold the display body at its opening angle only by the frictional force, and when it is used for a long time, the friction part, especially the metal washer and the bearing plate are used. There was a problem that wear occurred between the two and the initial rotation torque was reduced, so that the ability to stop and hold the display body at any position in the use opening angle was reduced.

The object of the present invention is to prevent abrasion of the friction member as much as possible, and to prevent the stop holding ability of the display body at any position in the opening angle of use from being reduced even after long-term use. , To provide a tilt hinge for OA equipment.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a mounting member that is mounted on the apparatus main body side and a mounting member that includes a bearing plate, and a display body that has a bearing plate of this mounting member bearing a small diameter portion at one end. A rotating shaft that also serves as a supporting member, a slider washer that is interposed between the large diameter portion of the rotating shaft and the bearing plate while inserting the small diameter portion in the center of the bearing plate, and the other side surface of the bearing plate. It consists of a thrust washer, a spring washer, and a holding washer which are inserted in the center of the small diameter portion, and the rotary shaft receives a predetermined rotational torque by caulking the end of the small diameter portion. It is configured to rotate only when it is turned on.

The present invention also serves as a mounting member composed of a mounting base and a bearing plate, which is mounted on the apparatus main body side, and also as a supporting member for a display body in which a small diameter portion provided at one end of the bearing plate of this mounting member is borne. The small diameter part of the rotary shaft is inserted in the center between the rotary shaft, the switch pressing member made of synthetic resin attached to the large diameter part of the rotary shaft, and this switch pressing member and one side surface of the bearing plate. The thrust washer and the press washer that are interposed while interposing the spring washer and the press washer on the other side of the bearing plate while the small diameter part of the rotary shaft is inserted through the center of the small diameter part. By swaging the end of the rotary shaft, the rotary shaft can be rotated only when a predetermined torque is applied. It is configured to roll.

The present invention further includes a mounting member that is mounted on the apparatus main body side and a mounting member that includes a bearing plate, and a supporting member for a display body in which a small diameter portion provided at one end of the bearing plate of the mounting member is mounted as a bearing. The rotating shaft that also serves as the rotating shaft, the switch pressing member made of synthetic resin attached to the large diameter part of the rotating shaft, and the small diameter part of the rotating shaft at the center between the switch pressing member and one side surface of the bearing plate. From the thrust washer and the press washer that are inserted while being inserted, and the thrust washer, the spring washer and the press washer that are inserted while inserting the small diameter part of the rotary shaft to the other side surface of the bearing plate at the center. By crimping the end of the small diameter part, the rotating shaft can generate a predetermined rotating torque. It is configured to rotate only when added.

In this case, according to the present invention, the switch pressing portion can be integrally provided on the large diameter portion.

In this invention, the thrust washer can be made of phosphor bronze.

[0010]

[Action]

 When the mounting base of the mounting member is fixed to the main body of the device, the rotating shaft is fixed to the display body, and the display body is opened and closed, thrust-washers with high wear resistance are interposed between each washer and the bearing plate. It can be freely stopped and held at any position, and the switch pressing part that rotates with the rotating shaft and the switch pressing part can automatically turn on and off the switch of the OA equipment body. ..

At that time, if the thrust washer is made of phosphor bronze, it has excellent wear resistance, and therefore even if it is caulked with a stronger caulking torque, it is possible that the rotational torque will decrease due to abrasion after long-term use. Can be prevented.

At that time, when the retaining washer is provided with a locking piece for preventing rotation and is engaged with the switch pressing member, the switch pressing member is independently rotated while being in pressure contact with the retaining washer. Therefore, even if the switch pressing member is made of synthetic resin, it will not be worn by friction.

[0013]

【Example】

 FIG. 1 shows an embodiment of the present invention. In FIG. 1, a keyboard 1 is provided, for example, a device body 2 of a word processor, on which a display body 4 made of liquid crystal is attached via a protrusion 3 so as to be openable and closable. There is. Although the display body 4 is shown in the opened state in the embodiment, it is closed when not in use, and the locking pieces 4a, 4a protruding from the display body 4 are provided on the apparatus main body 2 side. It is locked by engaging with the stop holes 2a, 2a.

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

According to the drawings, reference numeral 5 in FIGS. 2 to 3 denotes a mounting member, which is mounted on the apparatus main body 2 side. The mounting member 5 has a mounting base 5a and a bearing plate 5b, and a bearing hole 6 is provided in the bearing plate 5b. A rotating shaft 7 which also functions as a support member bears the small diameter portion 7a in the bearing hole 6. The rotary shaft 7 has a large diameter portion 7b provided following the small diameter portion 7a and a mounting portion 7c provided subsequent to the large diameter portion 7b. The mounting portion 7c is provided as a part of the display body 4. It is fixed. A switch pressing portion 8 is integrally formed on the outer circumference of the large diameter portion 7b, and a slider washer 9 is inserted into the insertion hole 9a between the switch pressing portion 8 and one side surface of the bearing plate 5b. The small diameter portion 7a is inserted and inserted. A thrust washer 10 and a spring washer 11 made of phosphor bronze are provided on the other side surface of the bearing plate 5b by inserting the through holes 10a and 11a into the small diameter portion 7a of the rotary shaft 7. The spring washer 11 is further provided with a pressing washer 12 which is in contact with the small diameter portion 7a of the rotary shaft 7 through the insertion hole 12a. By caulking the end of the small diameter portion 7a, the slider washer 9 and thrust washers 10 are pressed against both sides of the bearing plate 5b of the mounting member 5. The outer diameter of the large-diameter portion 7b and the outer diameter of the slider washer 9 are substantially the same, and the outer diameter of the press washer 12 is substantially the same as the outer diameter of the thrust washer 10 and the spring washer 11. The washer 9 and the thrust washer 10 are evenly pressed against the bearing plate 5b of the mounting member 5 over the entire surface.

Installed below the switch pressing portion 8 is the switch 13 of the apparatus main body 2 of the OA equipment, and the switch 13 is provided depending on the rotation angle of the rotary shaft 7 accompanying the opening / closing operation of the display body 4. It is automatically turned on and off by the pressing portion 8. The bearing plate 5b is further provided with a projecting piece 5c that abuts the switch pressing portion 8 at a constant rotation angle (135 °) as the shaft 7 rotates.

The spring washer 11 is formed by radially and alternately arranging three irregularities 11b and 11c at equal intervals, and the surfaces of the irregularities 11b and 11c are both flat. As a result, the spring washer 11 is evenly pressed to the bearing plate 5b side by the holding washer 12 having an outer diameter substantially the same as that of the spring washer, and a large stable friction is generated between the spring washer 11 and the bearing plate 5b. It is a factor that gives strength.

FIG. 4 shows another embodiment, in which a switch pressing member 21 made of synthetic resin is attached to the large diameter portion 20b of the rotary shaft 20 having the bearing hole 27 bearing the small diameter portion 20a. The phosphor washer bronze thrust washer 22 is interposed between the switch pressing member 21 and the bearing plate 24b of the mounting member 24 via a hard metal intermediate washer 23. 24a is a mounting base. The intermediate washer 23 has a locking piece 23a, which is not fully shown in the figure, but is designed to be locked to the switch pressing member 21. On the other side surface of the bearing plate 24b of the mounting member 24, a spring washer 25 and a press washer 26 are respectively inserted so that the small diameter portion 20a is inserted in the center thereof, and the small diameter portion 20a of the rotary shaft 20 is interposed therebetween. By caulking the end portion of the bearing, the thrust washer 22 and the spring washer 25 can be pressed against the bearing plate 24b.

FIG. 5 shows still another embodiment. A bearing hole 31 is provided in a bearing plate 30b of a mounting member 30 including a mounting base 30a and a bearing plate 30b, and the bearing hole 31 has a small diameter portion. The rotary shaft 32 into which the shaft 32a is inserted, the switch pressing member 34 mounted on the large diameter portion 32b of the rotary shaft 32 through the mounting pin 33, the switch pressing member 34 and one side surface of the bearing plate 30b. The metal intermediate washer 35 and the phosphor washer bronze thrust washer 36, which are interposed therebetween, and the spring washer 37 and the pressing washer 38, which are interposed between the other side surface of the bearing plate 30b, are included. 6, but with a phosphor bronze thrust between the spring washer 37 and the bearing plate 30b. A washer 39 is interposed.

When implemented in this way, there is an advantage that the wear resistance is further improved.

In any of the above embodiments, the caulking torque for caulking the end of the small diameter portion of the rotary shaft can be arbitrarily selected according to the weight of the display body.

It goes without saying that the display body may be not only for the word processor as in the embodiment but also for various OA equipment such as a personal computer.

[0023]

[Effect of the device]

 Since the present invention is configured as described above, the following effects can be obtained.

According to the first aspect to the third aspect, it is possible to stably stop and hold the display body at an arbitrary position in the opening angle for use, because it is small in size and does not occupy an installation space. It does not change over the years, and can prevent the display from falling suddenly when it is opened.

Further, according to the second to fourth aspects, the switch of the OA device is automatically turned on by the switch pressing member or the switch pressing portion provided on the rotating shaft which rotates at the same time when the display body is opened and closed. It can be turned off.

In this case, according to the fifth aspect, since the phosphor bronze has excellent viscosity and wear resistance, the small diameter part can be caulked more strongly, and the phosphor bronze is well compatible with the intermediate washer and the spring washer. , Will not wear even after many years of use.

Further, according to the present invention, since the switch pressing member and the pressing washer rotate at the same time, even if the switch pressing member is made of synthetic resin, it is not worn and the frictional force is not reduced. ..

[Brief description of drawings]

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

FIG. 2 is a front sectional view taken along line A in FIG.

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

FIG. 4 is an exploded perspective view showing another embodiment.

FIG. 5 is an exploded perspective view showing another embodiment.

[Explanation of symbols]

 2, device body 4 display body 5, 24, 30 mounting member 5a, 24a, 30a mounting base 5b, 24b, 30b bearing plate 5c projecting piece 6, 27, 31 bearing hole 7, 20, 32 rotary shaft 7a, 20a, 32a Small diameter part 7b, 23b, 32b Large diameter part 7c Mounting part 8 Switch pressing part 9 Slider washer 10, 22, 36, 39 Thrust washer 11, 25, 37 Spring washer 12, 26, 38 Presser washer 13 Switch 21 , 34 Switch pressing member 23, 35 Intermediate washer

Claims (6)

[Scope of utility model registration request] 1. A mounting member comprising a mounting base and a bearing plate, which is mounted on the main body of the apparatus, and a rotary shaft which also functions as a supporting member of a display body which has a bearing plate of the mounting member bearing a small diameter portion at one end thereof. A slider washer that is interposed between the large-diameter portion of the rotating shaft and the bearing plate while inserting the small-diameter portion in the central portion thereof; and the small-diameter portion in the central portion of the other side surface of the bearing plate. It consists of a thrust washer, a spring washer, and a holding washer which are interposed while being made to rotate, and by caulking the end of the small diameter part, the rotating shaft is rotated only when a predetermined rotating torque is applied. A tilt hinge for OA equipment, characterized in that 2. A mounting member comprising a mounting base and a bearing plate, which is mounted on the main body of the apparatus, and a rotary shaft which also functions as a supporting member of a display body which has a bearing plate of the mounting member bearing a small diameter portion at one end thereof. A switch pressing member made of synthetic resin attached to the large diameter portion of the rotating shaft, and interposed between the switch pressing member and one side surface of the bearing plate while inserting the small diameter portion of the rotating shaft at the center thereof. A thrust washer and an intermediate washer, and a spring washer and a press washer which are interposed on the other side of the bearing plate while inserting the small diameter portion of the rotary shaft into the center thereof, and the end portion of the small diameter portion is caulked. Therefore, the rotating shaft is configured to rotate only when a predetermined rotating torque is applied. A tilt hinge for OA equipment, characterized by: 3. A mounting member comprising a mounting base and a bearing plate, which is mounted on the main body of the apparatus, and a rotary shaft which also functions as a supporting member for a display body which has a bearing plate of the mounting member bearing a small diameter portion at one end thereof. A switch pressing member made of synthetic resin attached to the large diameter portion of the rotating shaft, and interposed between the switch pressing member and one side surface of the bearing plate while inserting the small diameter portion of the rotating shaft at the center thereof. A thrust washer and an intermediate washer, and a thrust washer, a spring washer, and a press washer that are interposed on the other side of the bearing plate while inserting the small diameter portion of the rotary shaft into the center portion thereof, and the end portion of the small diameter portion. By caulking, the rotating shaft rotates only when a predetermined rotating torque is applied. A tilt hinge for OA equipment, which is configured as described above. 4. The tilt hinge for OA equipment according to claim 1, wherein a switch pressing portion is integrally provided on the large diameter portion. 5. The tilt hinge for OA equipment according to claim 1, wherein the thrust washer is made of phosphor bronze. 6. The presser washer that is interposed on the switch pressing member side is provided with a locking piece for preventing rotation, and the locking washer is locked to the switch pressing member. Tilt hinge for 3 OA equipment.