JP2592467Y2 - Tilt hinge for OA equipment - Google Patents

Description

[Detailed description of the invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt hinge suitable for use in opening and closing a display body of an OA device such as a laptop or desktop type word processor or personal computer with respect to an apparatus body.

2. Description of the Related Art As a tilt hinge for opening and closing a display body of a laptop or desk-top OA device in a vertical direction with respect to the apparatus main body, the present applicant connects a mounting base and a bearing plate mounted on the apparatus main body at right angles. A bearing hole is formed in the bearing plate of the mounting member having an angled cross-section by bending the bearing plate, a rotating shaft having a flange portion is inserted in the bearing hole in a horizontal direction, and a slider washer and a spring washer are provided on the left and right sides of the bearing plate. The rotation shaft is inserted through the center of the rotation shaft, respectively, and the end of the rotation shaft is caulked to generate a frictional force on both sides of the bearing plate, so that the rotation shaft is rotated only by a predetermined torque, The display body fixed to this rotating shaft can be used at any angle in the vertical direction. I proposed that to be able to hold stops at the position.

The tilt hinge of the conventional OA device can stably hold the display body at the use angle with respect to the apparatus main body with respect to the apparatus main body, which can sufficiently satisfy the demand. However, depending on the type of OA equipment, it is required to have a high torque capable of holding a display body having the same size and a heavier weight. The purpose of this invention is to create a high torque without changing the size of the hinge from the conventional one, and to rotate the display body heavier than the conventional one in the vertical direction with respect to the device body, O can be stopped and held at the position
It is to provide a tilt hinge for an A device.

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a mounting member to be attached to the apparatus body, a female taper provided on the mounting member, and a female taper provided on the mounting member. A rotating shaft having a large-diameter portion, a male taper portion, and a small-diameter portion to be supported, and a fitting operation between the male taper portion and the female taper portion of the rotary shaft and acting in a direction of pressing the respective taper portions to each other. And a first friction means constituted by a pressure contact means which performs the second friction means at the same time as the second friction means. A friction washer provided in contact with the mounting member while being inserted through the spring washer; a spring washer provided in contact with the friction washer; and a spring washer. And a push nut attached to the rotary shaft for pressing the press washer toward the spring washer, wherein the friction of the second friction means is provided. A friction force is generated between at least one side surface of a washer and one side surface of the mounting member, between the female taper portion and the male taper portion of the bearing holder, and between the friction washer and another member. And a grease reservoir is provided at a portion where the grease slides.

The frictional force generated by the first frictional means generated when the male tapered portion provided on the rotating shaft and the female tapered portion bearing the same rotate in pressure contact with each other via the pressure contacting means; Due to the combined frictional force generated between one side of the friction washer that rotates together with the rotary shaft that constitutes the second friction means and the one side of the mounting member that presses against, a large frictional force can be obtained even with a small-diameter rotary shaft. In addition, grease is always supplied from the grease reservoir to the friction portions of the first friction means and the second friction means.

In FIG. 1, reference numeral 1 denotes a keyboard provided integrally with an apparatus main body 2 of a word processor, which is an example of OA equipment. On this keyboard, a mounting portion 3a of the apparatus main body 2 is rotatably mounted on an axis. Display body 3
Is provided. In addition, 3b, 3b is the display body 3.
Is closed, the locking holes 2a, 2b,
This is a locking piece for locking to 2a. The tilt hinge according to the present invention is provided at a portion viewed from A in the drawing. The details will be described below. 2 to 6, reference numeral 4 denotes a plate-like mounting member fixed to the apparatus main body 2 side. A groove 4a provided on the upper portion of the mounting member 4 has a bearing holder 5 made of, for example, a sintered metal made of wear-resistant and strong. The engaging projection 5a is engaged and fixed. The bearing holder 5 is provided with a female tapered portion 5a inside,
The rotary shaft 6 is inserted through the female tapered portion 5a bearing a male tapered portion 6a provided at the center. The rotating shaft 6 has a diameter of about 6 mm at the large diameter portion 6c and a length of about 45 mm, and the size of the entire hinge can be estimated from this. Reference numerals 5b, 5b,... Denote grease pools.
It is located at the location. The grease reservoir may be provided on the side of the male shaft taper portion 6a of the rotary shaft 6. The section provided following one end of the male tapered portion 6a has a small-diameter portion 6b having a substantially elliptical cross section as shown in FIGS.
For example, frictional washers 7 made of phosphor bronze, spring washers 8, and pressing washers 9 made of SPCC are provided in the portions protruding from the bearing holder 5 in the order of insertion holes 7a, 8a, 9a provided in the respective central portions. Pressing means 11 which presses the male tapered portion 6a of the rotating shaft 6 to the female tapered portion 5a by the push nut 10 while the friction washer 7 is in contact with the side surface of the bearing holder 5 while being inserted through the portion 6b. Is composed. More specifically, the insertion holes 7a, 9a of the friction washer 7 and the holding washer 9 are shown in FIGS.
As shown in (1), the cross-sectional shape matches the cross-sectional shape of the small-diameter portion 6b, and rotation with the rotary shaft 6 is forced. That is, the male tapered portion 6 of the rotating shaft 6 that is bearing on the female tapered portion 5a of the bearing holder 5
a and the pressing means 11 acting in the direction of pressing the respective tapered portions 5a and 6a against each other,
A first friction means a for the pressure contact means 1
The second friction means b is constituted by a friction washer 7 which rotates while being pressed against one side surface of the bearing holder 5 together with the one rotating shaft 6. Note that the bearing holder 5 may be formed integrally with the mounting member 4. A rectangular mounting portion 6d is provided at the end of the large diameter portion 6c provided following the other end of the male tapered portion 6a of the rotating shaft 6, and the mounting portion 6d is provided with a mounting portion 3a of the display body 3. Part of Figure 2
3 to 3 as shown in FIG.
Reference numerals 5c and 5c denote grease pools, all of which are not shown, but are installed at several places on the end face of the bearing holder 5. The grease reservoir may be provided on the friction washer 7 side. Therefore, when the display body 3 is opened and closed, the rotary shaft 6 rotates together. At this time, the first friction means constituted by the fitting bearing of the female taper portion 5a and the male taper portion 6a and the press-contact means 11 is provided. a and
Pressing means 11 composed of friction washer 7, spring washer 8, holding washer 9, and push nut 10 pressed against the side surface of bearing holder 5.
A frictional force is generated at the same time between the second frictional means b and the second frictional means b, and the display body 3 can be stably stopped and held at an arbitrary opening angle with respect to the apparatus main body 2.
In addition to the above embodiment, the friction means b may be configured by caulking the end of the small diameter portion instead of the push nut.

[Effects of the invention] Since the invention was constructed as described above,
The following effects can be added. With this configuration, a large frictional force can be obtained even with a small-diameter rotary shaft due to the combined frictional force of the two frictional units, the first frictional unit and the second frictional unit, acting on the rotary shaft. From, without changing the size of the tilt hinge itself,
Since it does not require a small installation space, it has the effect of being able to stably hold and hold a heavier display body at any use opening angle, and also allows the friction washer to be directly pressed against one side of the mounting member. In addition to being able to omit the thrust washer, grease is always supplied from the grease pool to the press-contact sliding surface between the female taper portion and the male taper portion and the press-contact sliding surface between the friction washer and another member. Therefore, since the lubricating action of each press-contact sliding surface does not deteriorate even after long-term use, it is possible to prevent the frictional force from changing and generating abnormal noise as much as possible.

[Brief description of the drawings]

FIG. 1 is a perspective view of an OA device implementing the present invention.

FIG. 2 is a right side view of the tilt hinge according to the present invention.

FIG. 3 is a front sectional view of the tilt hinge according to the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

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

FIG. 6 is a sectional view taken along line CC of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Keyboard 2 Device main body 3 Display body a Friction means b Friction means 4 Mounting member 5 Bearing holder 5a Female taper part 6 Rotating shaft 6a Male taper part 6b Small diameter part 6c Large diameter part 6d Mounting part 7 Friction washer 8 Spring washer 9 Presser washer 10 Push nut 11 Pressing means

Claims (1)

(57) [Scope of request for utility model registration] An attachment member attached to the apparatus main body, a female tapered portion provided on the attachment member, a large diameter portion, a male tapered portion, and a small diameter portion which are supported by the female tapered portion. A rotating shaft, and a first friction means comprising a fitting of the male tapered portion and the female tapered portion of the rotating shaft and a pressing means acting in a direction of pressing the respective tapered portions to each other, A friction washer provided with the press-contact means being a second friction means at the same time, and the second friction means being brought into contact with the mounting member while the small-diameter portions of the rotary shaft are inserted through respective central portions thereof. , A spring washer provided in contact with the friction washer, a pressing washer provided in contact with the spring washer, and a pressing washer. And a push nut attached to the rotary shaft to press a spring against the spring washer, and a push nut between at least one side of the friction washer of the second friction means and one side of the mounting member. The bearing holder is provided with a grease reservoir between a female taper portion and a male taper portion of the bearing holder, and a portion where the friction washer and another member are pressed against and slid. A tilt hinge for OA equipment.