JP2602161Y2 - Tilt hinge - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt hinge suitable for use as a display opening / closing device for OA equipment, a piano lid opening / closing device, or a Western style toilet seat or toilet lid opening / closing device.

[0002]

2. Description of the Related Art Conventionally, as a tilt hinge of this type, a screw is used to prevent a display body or a lid body from dropping suddenly when the display body is closed, and to stably hold the display body or a lid at a predetermined opening angle. Using a coil spring,
It is known to provide a thrust friction mechanism by caulking the end of the support shaft, use a damper mechanism, and appropriately combine these means.

[0003]

In the conventional tilt hinge using a torsion coille spring, a display body or a lid body is prevented from suddenly popping up at the time of opening, and at the time of closing. It is necessary to select a spring torque so as not to float on the lid or the like, and it is necessary to devise special measures by other means, and there is a problem that the structure becomes complicated. The one using the thrust friction mechanism by caulking the support shaft has a problem that the friction torque of the friction mechanism cannot be avoided from being attenuated due to wear after long use. The one using the damper structure alone cannot maintain the self-sustaining state of the display body or the lid body, and has a problem that another coil spring or a thrust friction mechanism must be used together.

[0004] The present invention has been made in view of such a point, and its purpose is to prevent a sudden fall or a floating at the time of closing a display body or a lid body by a single mechanism only. To provide a tilt hinge which can prevent the display body and the lid body from being stably stopped and held at an arbitrary opening angle, and does not deteriorate its function even after long-term use. is there.

Another object of the present invention is to provide a tilt hinge having a novel mechanism that can be used in combination with other coil springs, thrust friction mechanisms, damper mechanisms, and the like.

[0006]

In order to achieve the above-mentioned object, the present invention provides a mounting member having a mounting plate portion mounted on a keyboard main body side and a bearing plate portion bent at a right angle from the mounting plate portion; A non-rotatable cylinder having one end attached to an attachment hole provided in the bearing plate of the attachment member, and a support member attached to the display body attached at one end rotatably penetrating the cylinder. A rotary shaft provided with a cut portion in the axial direction having an end locked to the cylindrical body, a spring storage groove having a substantially circular cross section penetrating in an inner wall and a part of the cylindrical body in the axial direction, A spur having an outer diameter substantially coincident with the inner diameter of the spring accommodating groove housed in the spring accommodating groove and having a part of the outer periphery protruding toward the rotary shaft in the cylinder. Consists of a Ngupin, by the rotation angle of the rotary shaft, characterized in that the outer periphery thereof and configured to produce a state where no pressure and a state of pressure contact with the spring pin.

The present invention also relates to a mounting member having a mounting plate portion mounted on the keyboard main body side, a bearing plate portion bent at a right angle from the mounting plate portion, and a mounting hole provided in the bearing plate of the mounting member. A non-rotatable cylinder having one end attached thereto, a support member attached to a display body attached to one end formed rotatably penetrating the cylinder, and a shaft having the other end locked to the cylinder. A rotary shaft provided with a cut portion in the direction, a spring storage groove having a substantially circular cross section which is partially communicated with the inner wall of the cylindrical body in the axial direction, and the spring storage housed in the spring storage groove. A spring pin having an outer diameter substantially coinciding with the inner diameter of the groove and having a part of the outer periphery protruding toward the rotary shaft in the cylinder. A thrust friction mechanism having a configuration in which a state in which the outer periphery is in pressure contact with the spring pin and a state in which the outer periphery is not pressed by the rotation angle are provided, and at least a thrust washer and a spring washer are provided between the end surface of the cylindrical body and the rotating shaft. A tilt hinge, characterized in that a tilt hinge is provided.

[0009]

A so-called radial friction torque is generated by the spring pin being pressed against the outer periphery of the rotating shaft, and the friction torque controls the rotating torque of the rotating shaft. Thus, the opening / closing body can be stopped and held at an arbitrary opening angle. Further, when the cut portion of the rotating shaft faces the spring pin, no radial friction torque is generated. When the thrust friction mechanism that crimps the end of the rotating shaft via various washers is used together, the thrust friction torque generated at the end acts on the rotating shaft in addition to the radial friction torque generated at the outer periphery of the rotating shaft. become.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention. First, a radial friction mechanism for generating a radial friction torque will be described. In FIGS. A bearing plate portion 1a formed by bending the mounting plate portion 1 in a direction perpendicular to the mounting plate portion 1 is provided with a horn-like mounting hole 1c, and the horn-like mounting portion 2b provided at one end of the horn-like mounting hole 1c. And the cylindrical body 2 is fixed non-rotatably. The cylindrical body 2 is provided with a plurality of spring storage grooves 3 having a substantially circular cross section in the axial direction at the opposed position in contact with the bearing hole 2a. As shown in FIG. 4, the cross section of the spring storage groove 3 has a substantially circular shape in which the edge is not mounted, and the spring storage groove 3 communicates with the bearing hole 2a at the non-mounted portion.

A rotary shaft 5 having one end fixed to the mounting plate portion 4a of the support member 4 is axially inserted through a washer 6 into the bearing hole 2a. Cut in the direction to cut 5a, 5
a is provided, and a stop washer 8 is fitted to a portion of the side protruding through the cylindrical body 2 via a washer 7,
The rotating shaft 5 is designed so that it does not come off from the cylindrical body 2. Each spring housing groove 3 has a spring pin 9 whose outer diameter is substantially the same as that of the spring housing groove.
And a part of the outer periphery thereof is projected into the bearing hole 2 a of the cylindrical body 2 so as to face the outer periphery of the rotating shaft 5.

FIGS. 5 (a), 5 (b) and 5 (c) are for explaining the operation of the tilt hinge according to the present invention.
(A) In the figure, the outer periphery of the rotating shaft 5 has a flat portion 5
Although the portions a and 5a face the spring pins 9 and 9, they are not in pressure contact with each other and are in a free state. It can be opened and closed freely without encountering resistance. When the lid or the like is opened, the outer periphery of the rotary shaft 5 starts to contact the spring pins 9 in the state shown in FIG. When the lid is further opened, the rotating shaft 5
Is in contact with the spring pins 9 and 9 and presses and deforms them to generate radial friction torque, so that the display body and the lid are stopped and held at an arbitrary opened position by the friction torque. .

FIG. 6 shows a laptop or desk-top personal computer using the tilt hinge according to the present invention. Although not shown, the tilt hinge according to the present invention is attached to a portion viewed from A, and the mounting member is a keyboard. It is fixed to the main body B side and the support member is fixed to the display body C side for use. When the display body C is opened by arbitrarily selecting the number of spring pins and the spring pressure, the spring pin acting on the rotating shaft can be stably stopped and held at an arbitrary opening angle by radial friction of the spring pins. It is possible to prevent a sharp fall during formation.

In the above embodiment, two spring pins are used, but the number is not limited. There may be one case or two or more cases. At that time, FIG.
As shown in FIG. 2, a plurality of spring receiving grooves 11 are provided in the cylindrical body 10, and the spring pins 13 are received in the spring receiving grooves 11 by the torque applied to the rotating shaft 12.
And the spring pressure can be adjusted. In this embodiment, the outer periphery of the rotary shaft 12 has a cylindrical shape without any processing.

8 (a), 8 (b) and 8 (c) show another embodiment, wherein a single spring accommodating groove 21 is provided in a bearing hole 20a of a cylindrical body 20, and a spring accommodating groove 21 is provided in the spring accommodating groove 21. One pin 22 is stored. A cut portion 23a having a D-shaped cross section in the axial direction is provided in a portion that comes into contact with the spring pin 22 on the outer periphery of the rotary shaft 23 housed in the bearing hole 20a.

FIGS. 9 (a), 9 (b) and 9 (c) show still another embodiment in which the number of the spring pins 31 accommodated in the spring accommodating groove 33 is one. 3
The cut width of the cut portion 32a of the rotary shaft 32 housed in the position 0a is larger than that in FIG.

When implemented in this manner, the rotating shaft 32
There is an advantage that the allowable range of the free state at the time of rotation is increased.

FIGS. 10 (a), 10 (b) and 10 (c) show still another embodiment, in which two spring accommodating grooves 41 provided in a bearing hole 40a of a cylindrical body 40 are provided at 180 ° intervals. A spring pin 42 is housed in the housing groove 41, and six click grooves 43 a are provided on the outer periphery of the rotating shaft 43 at intervals of 60 °.

By performing the above operation, the click groove 43a is formed.
When the spring pin 42 is fitted, the rotary shaft 43 stops clicking, and radial friction acts at other locations.

FIG. 11 shows still another embodiment, in which a thrust washer 52, a spring washer 53, a thrust washer 52, and a portion protruding through a cylindrical body 51 of a rotary shaft 50 having a radial friction mechanism as described above are provided. The pressing washer 54 is fitted in order, and a thrust friction mechanism 55 that generates thrust friction by caulking the end thereof is provided. The thrust washer 52 may be a friction washer made of synthetic plastic, fiber, or the like, if necessary.
A slider washer such as nylon can be used.

[0021]

[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, various friction torques can be arbitrarily selected by a single mechanism having a simple configuration, and no torque for urging the rotary shaft to rotate in one direction is generated. The display body and the lid attached to the rotating shaft do not suddenly pop up from a certain rotation angle or float in a closed state, and when the tilt hinge is not used, the spring pin is attached to the outer periphery of the rotating shaft. Since the pressure contact state with the spring pin is released, permanent deformation of the elasticity of the spring pin can be prevented, so that there is an effect that the friction torque is extremely attenuated even after long-term use.

According to the second aspect of the present invention, friction is applied to the rotating shaft in the radial direction and the thrust direction, so that the rotating shaft can be used as a small-sized opening and closing device to which a larger torque is applied.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a tilt hinge according to the present invention.

FIG. 2 is a plan view showing a state where the tilt hinge according to FIG. 1 is assembled.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is an enlarged sectional view taken along line BB of FIG. 2;

5 (a), 5 (b) and 5 (c) are enlarged sectional views showing the main parts of the present invention.

FIG. 6 is a perspective view of a personal computer using the tilt hinge according to the present invention.

FIG. 7 is an enlarged sectional view showing a main part of another embodiment.

FIGS. 8A, 8B, and 8C are enlarged cross-sectional views showing the main parts of another embodiment.

FIGS. 9A, 9B, and 9C are enlarged cross-sectional views showing the main parts of another embodiment.

FIGS. 10A, 10B, and 10C are enlarged cross-sectional views showing the main parts of still another embodiment.

FIG. 11 is an enlarged partial sectional view showing a main part of another embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mounting member 1a mounting plate portion 1b bearing plate portion 1c mounting hole 2 10 20 30 40 51 cylindrical body 3 11 21 22 41 spring storage groove 4 support member 5 12 23 32 43 50 50 rotating shaft 5a flat portion 7 washer 8 stopper washer 9 13 22 31 42 Spring pin 23a 32a Cut part 43a Click groove 52 Thrust washer 53 Spring washer 54 Holding washer 55 Thrust friction mechanism

Claims (2)

(57) [Scope of request for utility model registration] 1. A mounting member having a mounting plate portion mounted on the keyboard body side, a bearing plate portion bent at a right angle from the mounting plate portion, and one end of a mounting hole provided in the bearing plate of the mounting member. A non-rotatable cylindrical body having attached thereto, a support member attached to a display body at one end portion rotatably penetrating the cylindrical body, and an axially cut portion having the other end portion locked to the cylindrical body. A rotary shaft provided with a spring storage groove having a substantially circular cross section which is partially communicated with the inner wall of the cylindrical body in the axial direction, and an inner diameter of the spring storage groove stored in the spring storage groove. A spring pin having a substantially equal outer diameter and having a part of its outer periphery protruding toward the rotary shaft in the cylinder, and by a rotation angle of the rotary shaft, A tilt hinge, wherein an outer periphery of the tilt hinge is configured to be in a state of being in pressure contact with the spring pin and in a state of not being pressed. 2. A mounting member having a mounting plate portion to be mounted on the keyboard main body side, a bearing plate portion bent at a right angle from the mounting plate portion, and one end portion of a mounting hole provided in the bearing plate of the mounting member. A non-rotatable cylindrical body having attached thereto, a support member attached to a display body at one end portion rotatably penetrating the cylindrical body, and an axially cut portion having the other end portion locked to the cylindrical body. A rotary shaft provided with a spring storage groove having a substantially circular cross section which is partially communicated with the inner wall of the cylindrical body in the axial direction, and an inner diameter of the spring storage groove stored in the spring storage groove. A spring pin having a substantially identical outer diameter and projecting a part of the outer periphery thereof toward the rotating shaft in the cylinder, depending on a rotation angle of the rotating shaft. A thrust friction mechanism having at least a thrust washer and a spring washer is provided between the end face of the cylindrical body and the rotary shaft, and a state in which an outer periphery thereof comes into pressure contact with the spring pin and a state in which no pressure is applied thereto are provided. A tilt hinge, characterized in that: