JPH06221050A - Hinge device - Google Patents

Abstract

PURPOSE:To obtain desired operating sensation by linking a spring, interposed between a rotor and a fixed body, with connecting torque corresponding to the vicinity of the maximum angular moment of a rotated member. CONSTITUTION:A hinge device 1 is provided with a rotor 2 fixed to a rotated member A and rotated around a horizontal axis, and a fixed body 3 fixed to a body B so as to support the rotor 2 rotatably. In this hinge device 1, a spring 4 for imparting torque opposed to the angular moment of the rotated member A is linked between the rotor 2 and the fixed body 3. At least one linked part of this spring 4 is linked with connecting torque corresponding to the vicinity of the maximum angular moment of the rotated member A. It is desirable to use a torsion coil spring as the spring 4. It is also desirable that viscous grease is filled between the rotor 2 and the fixed body 3. This results in obtaining a troque characteristic approximately coinciding with the angular moment characteristic of the rotated member A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device for rotatably supporting a rotatable member around a horizontal axis.

[0002]

2. Description of the Related Art Rotating members of this type include, for example, toilet seats, toilet lids, document holding plates for copying machines, and various opening / closing lids such as a word processor and a glove box (automobile) opening / closing lid. As shown in FIG.
A support shaft 101 is projected on both sides of one end of the
Is rotatably supported by a hinge 102 that is appropriately fixed to a main body (not shown), and the other end is attached so as to rotate in the a direction or the b direction. Rotated member 10 at this time
As shown in FIG. 11, the use mode of 0 is α range, β range, γ
There are various modes of the range and the δ range. In each case, when the rotation angle of the rotated member 100 is 0 ° (correctly, the neutral point of the rotated member 100), the rotation moment becomes 0 and the rotation angle is 90. When the rotation angle is °, the rotation moment changes depending on the rotation angle so that the rotation moment becomes maximum. For example, FIG. 12 and FIG. 13 show the relationship between the rotation moment and the rotation angle in the usage pattern in the α range.
The rotation angle is 0 °, the rotation moment is 0, and the rotation moment is maximum at a rotation angle of 90 ° (FIG. 12) or in the vicinity of the rotation angle of 90 ° (FIG. 13). Here, FIG. 12 is a characteristic diagram when the center of gravity of the non-rotating member 100 is located on the line of the center of rotation, and FIG.
FIG. 15 is a characteristic diagram when the center of gravity w is displaced from the rotation center c as shown in FIG.

By the way, it has been attempted to reduce the external force required for the rotation of the rotated member 100 by attaching a spring to the hinge 102 to assist the rotation.

[0004]

However, conventionally, it is impossible to design the above-mentioned spring so as to follow the characteristic diagram of the rotational moment of the rotated member, and it is possible to obtain a desired operation feeling. was difficult.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a hinge device that exhibits a torque characteristic that substantially matches the characteristic of the rotation moment of a rotated member that rotates about a horizontal axis. It is in.

[0006]

In order to achieve the above-mentioned object, the present invention provides a rotating body which is linked to a rotated member and rotates around a horizontal axis, and a rotating body which is fixed to a main body and is rotatable. In the hinge device including a fixed body that supports, a spring that applies a torque that opposes the rotational moment of the rotated member is linked between the rotary body and the fixed body, and at least one linking portion of the spring is It is characterized in that they are linked by a connecting torque corresponding to the vicinity of the maximum rotation moment of the rotated member.

At this time, a torsion coil spring can be used as the spring.

Further, the rotating body is divided into a rotating body linked to the rotated member and a rotation assisting body rotatably supported by a fixed body, and the rotating body and the rotation assisting body are separated from each other. A shaft that is linked by a spring that imparts a torque that opposes the rotational moment of the rotated member, and has a connecting torque that corresponds to the vicinity of the maximum rotational moment of the rotated member between the rotation assisting body and the fixed body. It is characterized by being linked by a lock spring.

At this time, a torsion coil spring or a torsion bar can be used as the spring.

Further, in the present invention, viscous grease can be enclosed between the rotating body and the fixed body.

[0011]

The present invention, by adopting the above-mentioned configuration,
In the vicinity of the maximum rotation moment of the rotated member, the torque value of the spring that gives a torque against the rotation moment of the rotated member becomes constant, and the rotation moment and the spring torque can be substantially matched. This is because one linking portion of the spring that imparts a rotating torque to the rotated member is linked with a connecting torque corresponding to the vicinity of the maximum rotating moment of the rotating member. This is because the rotating body, or the rotating body and the spring simply idle when the above action is performed, and an increase in the spring torque applied to the rotated member is prevented. Since this idling is caused by slip between the spring and the mating member (rotating body and / or fixed body), braking by the slip is added during this period.

Further, in the construction in which the rotary body is divided into the rotary body and the rotary auxiliary body, the idling is caused by the slip between the shaft lock spring and the rotary auxiliary body.

Further, in the structure in which the viscous grease is enclosed between the rotating body and the fixed body, the rotated member is loosened by the shearing resistance of the viscous grease during the rotation.

[0014]

The present invention will be described in detail below with reference to the illustrated embodiments. 1 to 3 show a loosening device 1 as a first embodiment of the present invention. The loosening device 1 includes a rotating body 2 which is linked to the rotated member A and rotates about a horizontal axis, a fixed body 3 which is fixed to the main body B and rotatably supports the rotating body 2, and the rotating body 2 and the fixed body. Torsion coil spring 4 linked to 3
It is composed of and. The rotating body 2 is composed of a bottomed cylindrical body, and an outer protrusion 2a and an inner protrusion 2 which are protruded inward and outward from the bottom portion thereof.
b is provided and is rotatably supported by the fixed body 3 by inserting the cylindrical opening into the circular hole 31a provided in the fixed body 3 so as to be located inward. The outer protrusion 2a is formed in a square cross section with four corners chamfered, and is fitted into the connecting portion A ₁ of the rotated member A while being prevented from rotating. The inner protrusion 2b has a circular cross section, and the collar 5 is press-fitted on the outer periphery.

Further, the fixed body 3 is integrally formed with a supporting portion 31 for supporting the rotating body 2 and a substrate 32 for fixing to the main body B, and the supporting portion 31 rotatably supports the rotating body 2. A circular hole 31a with a bottom is formed, and a hole 32a for attaching to the main body B is formed in the substrate 32. At the bottom of the circular hole 31a, a protrusion 31b having a circular cross section protruding inward is formed.
Is formed, and the collar 5 is formed on the outer periphery of the protrusion 31b.
Has been press-fitted.

The torsion coil spring 4 has a coil portion 4 at one end thereof.
A is externally fitted to the protrusion 31b, and the other end side coil portion 4b is externally fitted to the inner protrusion 2b, so that the rotary member 2 and the fixed member 3 are linked to each other. Each coil part 4 at this time
The tightening force of each of the protrusions 31a and 30b on the coil portions 4a and 4b is a torque (coupling torque) corresponding to the vicinity of the maximum rotation moment of the rotated member A in the coil portion 4a.
Has a larger torque (coupling torque) than the coil portion 4a. Both ends of the torsion coil spring 4 are free ends.

Further, reference numeral 6 in the drawing denotes a retaining metal fitting for the rotating body 2, and this metal fitting 6 has a circular hole 6a for allowing the outer projection 2a to project outwardly at substantially the center thereof, and has an L-shaped outer periphery at equal intervals. It is formed as a disk-shaped member in which three character-shaped claws 6b are extended. An engaging hole 6c is formed in each claw 6b.
The retaining metal 6 is mounted by assembling the rotating body 2 and the torsion coil spring 4 to the fixed body 3 and then fitting the retaining body 6 into the opening of the supporting portion 31 from the outside. This mounting is performed by engaging the engagement hole 6c with the engagement protrusion 31c provided on the outside of the support portion 31.

Next, the operation of the hinge device 1 assembled as described above will be described based on the characteristic diagram of FIG. Figure 4
In FIG. 3, a broken line M indicates the rotation moment of the rotated member A, and a solid line T indicates the torque of the torsion coil spring 4. The torsion coil spring 4 is assembled so as to be in an unloaded state when the rotation angle of the rotated member A is 0 °. This time has become Each coupling torque of both end side coil portion 4a and 4b of the torsion coil spring 4 is _{T 1} and _T 2 (> _{T 1).}
Further, the torsion coil spring 4 at this time is designed so that the torque T thereof is less than the rotation moment M of the rotated member A, so that the rotated member A operates in a closed manner.

First, when an initial external force is applied to the rotated member A in the fully opened state (rotation angle = 0 °) to start the member, the rotated member A is closed by its own weight. During this closing operation, the rotating body 2 rotates in synchronization with the rotated member A. Due to the rotation of the rotating body 2, the torsion coil spring 4 is twisted in the winding direction, and a torque against the rotational moment of the rotated member A is accumulated. This process is indicated by Ta in FIG. 4, and the accumulated torque is T ₀ → T ₁ .

The accumulated torque T ₁ becomes the same as the coupling torque T ₁ of the torsion coil spring 4, more of the rotating member A
When the rotation moment M thereof exceeds the torque T ₁ due to the rotation of the coil, the torsion coil spring 4 is not further twisted, and the coil portion 4a slips around the protrusion 31b.
The accumulated torque is maintained at T ₁ as shown by Tb in FIG. 4 and reaches the fully closed state (rotation angle 90 °). During this period, the rotated member A is braked by slip and slowly moves.

Next, the opening operation of the rotated member A in the fully closed state will be described. Since this opening operation is performed while releasing the accumulated torque of the torsion coil spring 4, it can be easily performed with a small external force load. This process is indicated by Tc in FIG. 4, and the torque of the torsion coil spring 4 at this time is T ₁ → T ₀ . When the torque becomes T ₀ , the rotated member A cannot be fully opened. This is due to the phase shift caused by the movement of the coil portion 4a due to the slip in the Tb process at the time of the closing operation, and the fully opened state (rotation angle 0 °) is obtained. This process is indicated by Td in FIG. In this process, the torsion coil spring 4 is twisted in the rewinding direction via the rotating body 2, so that the coil portion 4a slips around the protrusion 31b in the direction opposite to the closing operation and returns to the original position before the closing operation. Then, the fully rotated state of the rotated member A is obtained.

The above description is for the case where the hinge device 1 is designed so that the rotated member A can be closed freely. The hinge device 1 is rotated by selecting the torsion coil springs 4 having different torque magnitudes. It can be designed so as to exhibit the opening property of the member A or its balance property. That is, the hinge device 1 opens when the relationship between the torque T of the torsion coil spring 4 (during the closing operation of the rotated member A) and the rotation moment M of the rotated member A is designed as shown in FIG. A self-propelled characteristic is obtained, and when the relationship is designed as shown in FIG. 6, a characteristic approximate to the balance characteristic is obtained. The hinge device 1 designed as described above operates in the same manner as the hinge device 1 having the above-mentioned closing property except the opening property or the balance property.

FIG. 7 shows a hinge device 50 as a second embodiment of the present invention. The hinge device 50 is the same as the hinge device 1 described above except for the connection structure of the torsion coil spring 4 and the rotating body 2. For this reason, the same constituent elements are designated by the same reference numerals and redundant description will be omitted. An engaging groove 2c is provided on the inner surface of the bottom of the rotating body 2, and a hook portion 4c is formed at the other end of the torsion coil spring 4, and the hook portion 4c is provided in the engaging groove 2c. The rotor 2 and the torsion coil spring 4 are connected by engaging with each other. The hinge device 50 operates similarly to the hinge device 1 described above.

FIG. 8 shows a hinge device 60 as a third embodiment of the present invention. The hinge device 60 is different in that two rotating bodies and a spring member are used, and the other structure is the same as that of the hinge device 1 described above. Hinge device 1
The same components as in FIG. Here, the two rotating bodies are the rotating body 2 linked to the rotated member A and the rotation assisting body 7 rotatably supported by the protrusion 31b, and the two spring members are the rotating member A. And a shaft lock spring 8 for controlling the rotation of the rotation assisting body 7.
Is.

An engaging groove 2c is formed on the inner surface of the bottom of the rotary body 2, and the rotation assisting body 7 is a bottomed cylinder, and the protrusion 31b is formed by externally inserting the cylinder into the protrusion 31b.
Is rotatably supported on the bottom of the engaging groove 7
a is formed. Further, the torsion coil spring 4 has hook portions 4c and 4d formed at both ends thereof, and is attached by engaging the hook portions 4c and 4d with the engagement grooves 2c and 7a, respectively. The coil portion 8a is externally attached to the rotation assisting body 7 in a close contact state, and the one end hook portion 8b is hooked on the fixed body 3 to be attached. At this time, the tightening torque (connecting torque) of the shaft lock spring 8 with respect to the rotation assisting body 7 is the torque T ₁ corresponding to the vicinity of the maximum rotation moment of the rotated member A.

In the hinge device 60 having such a structure, the rotation of the rotated member A is transmitted to the torsion coil spring 4 via the rotating body 2. Upon rotation of the direction of increasing the rotational moment M of the rotating member A is twisted torsional coil spring 4 spring torque is increased (Ta process of FIG. 4), the rotation moment M spring torque T ₁ When it exceeds, the torsion coil spring 4 is not further twisted, and the rotation body 2, the torsion coil spring 4, and the rotation assisting body 7 rotate together (Tb process in FIG. 4). In this Tb process, the rotation assisting body 7 rotates while slipping with respect to the shaft lock spring 8, so that braking by slipping can be obtained. The rotation direction of the rotation assisting body 7 in the Tb process is the winding direction of the shaft lock spring 8.

When the rotating member A is rotated in the direction of decreasing the rotation moment M, the torsion coil spring 4 releases its accumulated torque and the spring torque decreases (Tc process in FIG. 4).
The Td process of FIG. 4 is reached. In the Td process, when the rotated member A is further rotated in the fully opening direction by applying an external force, the rotating body 2, the torsion coil spring 4, and the rotation assisting body 7 rotate together to obtain the fully opened state. The rotation direction of the rotation assisting body 7 in the Tc process is the unwinding direction of the shaft lock spring 8.

Further, FIG. 9 shows a hinge device 70 as a fourth embodiment of the present invention. The hinge device 70 is the hinge device 60 described above except that the torsion bar 9 is a spring that applies a torque against the rotational moment of the rotated member A.
It has the same structure as. For this reason, the same constituent elements are designated by the same reference numerals and redundant description will be omitted. The torsion bar 9 is formed of a stranded wire in which a plurality of single wires are twisted, and both ends of the torsion bar 9 are attached by caulking 10 to the rotating body 2 and the auxiliary rotating body 7. The reason why the torsion bar 9 is formed of a stranded wire is to withstand high stress and facilitate the design. Needless to say, the torsion bar 9 may be formed of a single wire when there is no problem in terms of stress. Is. The hinge device 70 operates in the same manner as the hinge device 60 described above. In the hinge device 70, the torsion bar 9 is used in place of the torsion coil spring, so that the size of the support portion 31 (see FIG. 1) of the fixed body 3 in the radial direction can be reduced and the entire device can be made compact.

Next, each hinge device 1, 50, 60, and 70
An example of the change will be described. Hinge device 1,5
Viscous grease can be enclosed between the rotating body 2 (or the rotating body 2) and the fixed body 3 at 0, 60, and 70. In this case, it is possible to loosen the rotated member when the hinge device is designed to be closed or opened, and obtain a good operation feeling.
There is an advantage that the design of the balance characteristic is easy.

Further, can either be designed coupling torque across the coil portions 4a and 4b of the torsion coil spring 4, both the torque T ₁ of the maximum torque near of the rotating member in the hinge apparatus 1, the coil portion 4b side It is also possible to design the connecting torque of the above to be the torque T _{1 and} to design the connecting torque of the coil portion 4a side on the other side to be a torque exceeding the torque T ₁ .

Further, in the hinge devices 50, 60, and 70, the hook portion 4c of the torsion coil spring 4 is locked to the fixed body 3 side (the hinge device 50), or the related structure of the rotation assisting body 7 is attached to the rotating body 2. Provided on the side (hinging devices 60 and 7
0) or the like may have a reverse structure to the above embodiment.

[0032]

As described above, according to the present invention, the spring for applying the torque against the rotational moment of the rotated member is linked between the rotating body and the fixed body, and at least one linking portion of the spring is Since they are linked by the connecting torque corresponding to the vicinity of the maximum rotational moment of the rotated member, slip occurs in the linked portion in the range where the rotational moment exceeds the connecting torque, and the spring and the rotating body rotate together. The spring torque does not increase. Therefore, according to the present invention, it is possible to easily design the spring torque characteristic to match the rotational moment characteristic of the rotated member, and various hinge devices exhibiting the closing characteristic, the opening characteristic or the balance characteristic can be easily designed with a simple structure. It will be possible.

[Brief description of drawings]

FIG. 1 is a plan view of a hinge device as a first embodiment.

2 is a right side view of the hinge device of FIG. 1. FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a characteristic diagram of a rotation moment and a spring torque of the rotated member with respect to a rotation angle of the rotated member when the hinge device of FIG. 1 is used.

5 is a characteristic diagram of a rotation moment and a spring torque of the rotated member with respect to a rotation angle of the rotated member when the hinge device of FIG. 1 is used.

6 is a characteristic diagram of a rotation moment and a spring torque of the rotated member with respect to a rotation angle of the rotated member when the hinge device of FIG. 1 is used.

FIG. 7 is a vertical sectional view of a hinge device as a second embodiment.

FIG. 8 is a vertical sectional view of a hinge device as a third embodiment.

FIG. 9 is a vertical sectional view of a hinge device as a fourth embodiment.

FIG. 10 is a perspective view of a rotated member that rotates about a horizontal axis.

FIG. 11 is a schematic explanatory diagram of an application range of a rotated member that rotates about a horizontal axis.

FIG. 12 is a characteristic diagram of a rotation moment with respect to a rotation angle of a rotated member that rotates about a horizontal axis.

FIG. 13 is a characteristic diagram of a rotation moment with respect to a rotation angle of a rotated member that rotates about a horizontal axis.

FIG. 14 is a side view of the rotated member that achieves the characteristic diagram of FIG.

[Explanation of symbols]

 1,50,60,70 Hinge device 2 Rotating body (rotating body) 3 Fixed body 4 Torsional coil spring 7 Rotation auxiliary body 8 Axis lock spring 9 Torsion bar

Claims (5)

[Claims] 1. A hinge device comprising a rotating body which is linked to a rotated member and rotates about a horizontal axis, and a fixed body which is fixed to a main body and rotatably supports the rotating body. A spring that applies a torque that opposes the rotation moment is linked between the rotating body and the fixed body, and at least one linking portion of the spring has a connecting torque corresponding to the vicinity of the maximum rotation moment of the rotated member. A hinge device characterized by being linked. 2. The hinge device according to claim 1, wherein the spring is a torsion coil spring. 3. The rotating body is divided into a rotating body linked to a rotatable member and a rotation assisting body rotatably supported by a fixed body, and the rotating body and the rotation assisting body are separated from each other. A shaft that is linked by a spring that imparts a torque that opposes the rotational moment of the rotated member, and has a connecting torque that corresponds to the vicinity of the maximum rotational moment of the rotated member between the rotation assisting body and the fixed body. The hinge device according to claim 1, wherein the hinge device is linked by a lock spring. 4. The hinge device according to claim 3, wherein the spring is a torsion coil spring or a torsion bar. 5. The hinge device according to claim 1, wherein viscous grease is enclosed between the rotating body and the fixed body.