JPH11182531A - Rotational action supporting mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotational motion supporting mechanism capable of reducing noise generated at the time of click, and easily adjusting holding power at the time of click. SOLUTION: A first recessed part and a second projecting part are formed on the end face 13b of a part of a rotary shaft 13 inserted in a body case. The second projecting part and a second recessed part which correspond to the first recessed part and a first projecting parts, are formed on an end face 14a, and a cam member 14 which is axially pressed when the first projecting part and the second projecting part are slidably in contact with each other, is installed. When the cam member 14 is axially pressed, a magnet part 15 is separated from a magnetic material part 12, and by engaging the first recessed part with the second projecting part, the magnet part 15 is attracted to the magnetic material part 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary motion support mechanism, and more particularly to a rotary motion support mechanism having an improved click mechanism for holding a rotary shaft at a predetermined rotation angle.

[0002]

2. Description of the Related Art Conventionally, a control object connected to a rotating shaft,
For example, doors, piano keyboard lids, laptop computer lids, Western-style toilet seats and toilet lids, etc., when the rotation axis reaches a predetermined rotation angle, the controlled object is opened at that position. In order to hold the rotation mechanism, a rotary operation support mechanism having a built-in click mechanism is used. As such a click mechanism, for example, a concave portion is provided on an inner surface of a main body case fixed to a main body portion supporting the above-mentioned control target, and a convex portion engaging with the concave portion is protruded at an appropriate position on the rotating shaft. Or a mechanical structure by a cam system in which a steel ball or the like urged by a spring is disposed at a predetermined position and the rotating shaft is held at a predetermined rotation angle when both are engaged. ing.

[0003]

However, since the above-mentioned click mechanism is only mechanically engaged in any case, the concave and convex portions which engage with each other are worn due to use. There was a problem in terms of gender. Further, when trying to maintain a high holding force at the time of clicking, a cam having a deeper concave portion, a higher convex portion, and the like must be employed, and there has been a problem that the noise generated at the time of clicking increases. Further, when the cam is deformed due to abrasion or the like, abnormal noise may be generated at the time of engagement.
There is also a structure in which the leaf spring spreads and clicks when a predetermined angle is reached by using the reaction force of the leaf spring. In this case, the holding force at the time of clicking should be increased. Then, it is necessary to use a leaf spring having a larger reaction force, and in that case, there is a problem that workability at the time of assembly is poor.

[0004] The present invention has been made in view of the above,
It is excellent in durability and can reduce the noise generated when clicking, and it is easy to adjust the holding force when clicking, and even if a large holding force is used, it adversely affects the workability during assembly It is an object of the present invention to provide a rotation operation support mechanism provided with a click mechanism that does not give a click.

[0005]

According to a first aspect of the present invention, there is provided a rotary operation support mechanism according to the first aspect of the present invention, wherein a cylindrical main body case and at least a part thereof are inserted and supported in the main body case. And a rotation shaft to which the control object is connected, and a click mechanism for stopping rotation of the rotation shaft at a predetermined rotation angle, and a rotation operation support mechanism for rotatably supporting the control object. , The click mechanism,
A magnet portion disposed in the main body case and movable in the axial direction by rotation of the rotating shaft; and a normal position in the main body case is provided so as to be axially separated from the normal position of the magnet portion. And a magnetic body portion which is attracted when the rotating shaft rotates by a predetermined angle and the magnet portion moves a predetermined distance in the axial direction. According to a second aspect of the present invention, there is provided the rotary operation support mechanism according to the first aspect, wherein the outer diameter of a predetermined portion of a portion of the rotary shaft inserted into the main body case and the outer diameter of the predetermined portion correspond to the outer diameter. The inner diameter of the inner surface of the main body case is adjusted so that a space can be formed between them, and a screw portion is formed at a predetermined portion of a portion of the rotary shaft inserted into the main body case, and A magnet portion forming the click mechanism portion, a nut made of a non-magnetic material screwed into the screw portion of the rotating shaft, a permanent magnet fixed to the outside of the nut, and fixed to the outside of the permanent magnet. And a yoke having, on an outer surface thereof, an engaged portion that engages with an engaging portion formed along the axial direction in the main body case. According to a third aspect of the present invention, there is provided the rotary operation supporting mechanism according to the first aspect, wherein the first concave portion and the first concave portion are provided on an end surface of a portion of the rotary shaft inserted into the main body case.
A convex portion is formed, and a second convex portion and a second concave portion corresponding to the first concave portion and the first convex portion are formed on an end surface. When the first convex portion and the second convex portion come into sliding contact with each other, the shaft is formed. A cam member pressed in the direction is disposed, and the magnet member is separated from the magnetic body portion by the cam member being pressed in the axial direction, and the first concave portion and the second convex portion are engaged with each other. The magnet part is attracted to the magnetic part. A rotary operation support mechanism according to a fourth aspect of the present invention is the rotary operation support mechanism according to any one of the first to third aspects, wherein the damper section delays the rotation of the rotary shaft in at least one direction. It is characterized by having. According to a fifth aspect of the present invention, there is provided the rotary operation supporting mechanism according to the fourth aspect, wherein the damper portion includes a spring having one end connected to the main body case and the other end connected to the rotary shaft. It is characterized by comprising. According to a sixth aspect of the present invention, there is provided a rotary motion support mechanism according to the fourth aspect,
The damper unit is configured to include a viscous liquid filled between the main body case and the rotation shaft. According to a seventh aspect of the present invention, there is provided the rotary operation support mechanism according to the fourth aspect, wherein the damper portion includes a spring having one end connected to the main body case and the other end connected to the rotary shaft;
And it is characterized by comprising both viscous liquid filled between the main body case and the rotating shaft.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 and FIG. 2 are cross-sectional views showing a rotary operation support mechanism 1 according to one embodiment of the present invention. The rotation operation support mechanism 1 includes a cylindrical main body case 2.
And a rotation shaft 3 at least partially inserted into the main body case 2 and disposed, and a click mechanism 4.

[0007] The main body case 2 is provided with a screw (shown in the figure) on a main body for supporting the object to be controlled, for example, an entrance frame when the object to be controlled is an entrance door, a toilet body when a toilet seat or a toilet lid is used. ) Is fixedly arranged. The main body case 2
It is roughly divided into a small diameter portion 21 having a small inner diameter and a large diameter portion 22 having a large inner diameter. Near the end of the small diameter portion 21,
A step portion 21a projecting inward as viewed from the small diameter portion 21 side is formed, and the shaft insertion portion 21c having a smaller inner diameter is formed by the step portion 21a, but the shaft insertion portion is formed without forming the step portion 21a. May be configured using a lid (not shown) made of a separate member having Near the end of the large-diameter portion 22, a step 22 a is formed which extends outward as viewed from the large-diameter portion 22 side, and the step 22 a extends from the step 22 a to the end 22.
The area up to b has a larger inner diameter. Between the step 22a and the end 22b, a magnetic body 6 constituting one member of a click mechanism 4 described later is provided. In addition,
After the rotating shaft 3 and the click mechanism 4 are accommodated in the end 22 b of the main body case 2 on the side of the large diameter portion 22, a lid member 23 for holding them inside the main body case 2 is attached.

At least a part of the rotating shaft 3 is inserted into the main body case 2, of which the main body case 2
The outer diameter of a portion corresponding to the inner surface of the large-diameter portion 22 is formed in such a shape that a space 24 can be formed between the outer surface and the inner surface of the large-diameter portion 22. Specifically, the above-mentioned main body case 2
A projecting portion 31 which is formed to have an outer diameter substantially equal to the inner diameter of the shaft insertion portion 21c, protrudes out of the main body case 2 through the shaft insertion portion 21c, and is connected to a control object (not shown); An intermediate portion 32 having substantially the same outer diameter as the inner diameter of the small diameter portion 21 of the case 2 and located in the small diameter portion 21; and a portion extending from a boundary portion with the intermediate portion 32 to a rear end portion 33b. And a small outer diameter portion 33 having an outer diameter smaller than the outer diameter of the intermediate portion 32.
And is configured. Thereby, the small outer diameter portion 33
A space portion 24 is formed between the main body case 2 and the corresponding large-diameter portion inner surface. In the present embodiment, a screw portion 33a is formed on the outer surface of the small outer diameter portion 33. It is preferable that the screw portion 33a is formed as a multi-threaded screw in order to enlarge the lead. Note that the rear end portion 33b is pivotally supported by the lid member 23 of the main body case 2.

The click mechanism 4 is provided with the space 24 described above.
And a magnetic body 6 housed in the housing. Specifically, the magnet part 5 has a screw part (not shown) screwed to the screw part 33a of the small outer diameter part 33 of the rotating shaft 3 on the inner surface, and a nut 51 made of a non-magnetic material such as plastic. An annular permanent magnet 52 fixed to the outer surface of the nut 51 with an adhesive or the like;
The bottom wall 53a is similarly fixed to the outer surface using an adhesive or the like.
And a peripheral end wall 53b, and has a substantially L-shaped cut end surface, and is constituted by a planar annular yoke 53. More specifically, the yoke 53 is disposed such that the bottom wall 53a is located on the small-diameter portion 21 of the main body case 2 and the intermediate portion 32 of the rotating shaft 3. It is arranged between. In order to prevent the permanent magnet 52 from directly contacting the magnetic body portion 6 described below and being damaged, the height (the length along the axial direction) of the peripheral wall 53b of the yoke 53 is set in the axial direction of the permanent magnet 52. Is preferably longer than the length along the length. Further, on the outer surface of the peripheral wall 53b of the yoke 53, FIG.
As shown in FIG. 5, a groove 53c as an engaged portion is formed along the axial direction, and the groove 53c is formed on the inner surface of the large-diameter portion 22 of the main body case 2 along the axial direction. It engages with the ridge 22c which is the joint.

In the present embodiment, the magnetic body portion 6 has an insertion hole 61 having an inner diameter larger than the outer diameter of the small outer diameter portion 33 of the rotary shaft 3 near the center, and the main body case having the outer diameter described above. 2 is made of a disc-shaped iron plate formed to be substantially the same as the inner diameter between the step 22a on the side of the large diameter portion 22 and the end 22b. The magnetic part 6 is not limited to iron as long as it is a magnetic material.

[0011] The rotation support mechanism 1 according to the present embodiment.
For example, in the case of a Western-style toilet, the main body case 2 is fixed to the upper part of the toilet body, and the protruding portion 31 of the rotary shaft 3 is connected to a toilet seat or a toilet lid which is an object to be controlled. Specifically, the state in which the bottom wall 53a of the yoke 53 of the magnet part 5 is in contact with the boundary between the small diameter part 21 of the main body case 2 and the intermediate part 32 of the rotating shaft 3 when the toilet seat or the toilet lid is closed. It is set as a normal position (the state shown in FIG. 1). At this time, the magnetic part 6 is located between the step 22 a on the large diameter part 22 side of the main body case 2 and the end 22 b, and is separated from the magnet part 5.

When the toilet seat or toilet lid is opened from this state, the rotating shaft 3 rotates in one direction accordingly. Even if the rotating shaft 3 rotates in one direction, the groove 53c of the yoke 53 is engaged with the ridge 22c of the main body case 2, so that the magnet portion 5 is prevented from rotating in the same direction as the rotating shaft 3. Since the nut 51 is screwed into the small outer diameter portion 33 of the rotating shaft 3, the nut 51 eventually moves along the axial direction in a direction approaching the magnetic body portion 6.

When the toilet seat or the toilet lid is further opened and opened at a predetermined angle, for example, 100 degrees, the magnetic portion 6 is attracted to the magnet portion 5 by the magnetic force of the permanent magnet 52. In that state, if you further open the toilet seat or toilet lid,
Until the magnetic member 6 contacts the cover member 23 of the main body case 2, the magnet portion 5 and the magnetic member 6 move together in the axial direction up to, for example, 120 degrees in terms of the rotation angle of the toilet seat or the toilet lid.

In this state, when the hand or the like attached to lift the toilet seat or the lid is released, the toilet seat or the lid tends to fall forward due to its own weight. At the time of contact with the step portion 22a on the diameter portion 22 side, that is, in this case, it stops at the opening angle of 100 degrees. Thereby, the toilet seat or the toilet lid can be made independent at a desired angle.

When closing the toilet seat or the toilet lid, an external force is applied in such a manner that the magnet portion 5 is separated from the magnetic body portion 6 in the closing direction. After that, the toilet seat or the toilet lid is closed by its own weight, and the rotating shaft 3 rotates in the opposite direction to the opening direction. Therefore, in the main body case 2, the magnet portion 5 extends along the axial direction of the main body case 2. When it moves in the direction approaching the small diameter portion 21 of the main body case 2 and the intermediate portion 32 of the rotating shaft 3 and is completely closed,
It returns to the normal position shown in FIG.

When it is desired to change the holding force at the time of clicking (at the time of attraction between the magnet section 5 and the magnetic body section 6) according to the control target, it is only necessary to use a permanent magnet 52 having a different magnetic force. Therefore, the adjustment of the holding force is easy, and the assembling does not become difficult because the holding force is increased.

FIG. 3 shows a rotation support mechanism 1 according to another embodiment of the present invention. This rotation operation support mechanism 1
Has a coil spring 7 having one end 7a fixed to the protruding portion 31 of the rotating shaft 3, the other end 7b fixed to the main body case 2, and a damper portion. The coil spring 7 moves the rotating shaft 3 in one direction of the control object, for example, in the closing direction.
It is set so that when it rotates, it is wound up and exerts its resistance. Other structures are exactly the same as those of the above-described embodiment.

Therefore, according to the rotary motion support mechanism 1 of the present embodiment, when an external force of a predetermined value or more is applied in a direction in which the click caused by the magnet unit 5 being attracted to the magnetic body unit 6 is released, the control object is controlled. The object is closed by its own weight or the like, but the controlled object is slowly closed by the resistance of the coil spring 7.

FIGS. 4 and 5 show a rotation support mechanism 1 according to still another embodiment of the present invention. In the present embodiment, as the main body case 2 ′, large-diameter portions 22 ′ and 23 ′ are provided on both sides of a partition wall 21 ′ formed at a substantially central portion.
A click mechanism 4 composed of a magnet 5 and a magnetic body 6 exactly as described above is provided in a space 24 ′ formed in one large-diameter section 22 ′. It is arranged. In the other large-diameter portion 23 ', partition walls 23'a and 23'b whose leading end faces abut on the outer surface of the rotating shaft 3' and partition the inside in the circumferential direction are provided (see FIG. 5). ). Then, the portion of the rotating shaft 3 'having the vane portions 34' and 35 'protruding along the axial direction is located in the other large-diameter portion 23', and the outer surface of the rotating shaft 3 'and the other The viscous liquid is filled in the inner surface of the large-diameter portion 23 '.
That is, a damper section provided with a viscous liquid, partition walls 23'a and 23'b, and vanes 34 'and 35' is provided in the other large diameter section 23 '.

Accordingly, the rotating shaft 3 'together with the object to be controlled is provided.
Rotates, the vanes 34 'and 35' press the viscous liquid, and the partition walls 23'a and 23'b and the rotating shaft 3 '
The rotation of the rotating shaft 3 ′ becomes slow due to the passage of a small gap with the outer surface and the dynamic pressure resistance exerted thereby. Therefore, also in the present embodiment, the control object slowly closes or opens when an external force of a predetermined value or more is applied in a direction in which the click caused by the magnet unit 5 being attracted to the magnetic body unit 6 is released. .

The damper using the viscous liquid is not limited to those shown in FIGS. An orifice (not shown) may be further formed in the vanes 34 'and 35' so that the dynamic pressure resistance of the viscous liquid acts only when the rotating shaft 3 'rotates in one direction. Also, without providing the vanes 34 ', 35', the outer diameter of the rotating shaft 3 'is made slightly smaller than the inner diameter of the other large-diameter portion 23', and the gap is filled with a viscous liquid such as grease. Then, the operation of the rotating shaft 3 'may be delayed by utilizing the viscous resistance. Further, a damper unit using a viscous liquid and the coil spring 7 shown in FIG. 3 can be used together.

6 to 11 show a rotation support mechanism 10 according to still another embodiment of the present invention. A magnetic body portion 12 made of an annular iron plate is fixedly provided in the rotation operation support mechanism 10 so as to partition the inside of the bottomed cylindrical main body case 11 into two chambers in the axial direction. A cap member 11a is provided in the opening.

The rotating shaft 13 has one end 13a protruding outside through the cap member 11a, and the other end is housed in one chamber 11c of the main body case 11 separated by the magnetic body portion 12. . 8 and 9
As shown in FIG.
A first concave portion 13c and a first convex portion 13d are formed in 3b. The first concave portion 13c is formed by forming the end face 13b with a predetermined width along the diametrical direction. By forming the first concave portion 13c, the first convex portion 13d which relatively projects is formed by the first concave portion 13c. In the end face 13b, it corresponds to all parts other than the first recess 13c. The boundary 13e between the first concave 13c and the first convex 13d is formed in a tapered shape.

As shown in FIGS. 10 and 11, the cam member 14 is formed in a disk shape, and has one end surface 14a facing the rotating shaft 13 having a predetermined width along the diameter direction. Two convex portions 14b are formed. The width of the second protrusion 14b is set to be equal to or smaller than the width of the first recess 13c of the rotating shaft 13 described above. Also, this one end surface 14a
In the case of, the second projection 14b is relatively protruded, so that the other portions are concave (second recess 14c). In addition, guide grooves 14d are formed at appropriate positions on the outer peripheral surface of the cam member 14, that is, at positions that face each other by approximately 180 degrees in the present embodiment. This guide groove 14d
Engages with a guide projection 11b protruding in the main body case 11 along the axial direction, as shown in FIG. further,
A projection 1 is provided substantially at the center of the other end face 14f of the cam member 14.
4e is projected, and this projection 14e is
Can be inserted through the center hole 12a.

In the main body case 11, the magnetic material portion 12
In the other chamber 11d separated by the above, a magnet part 15 which constitutes a click mechanism together with the magnetic part 12 is disposed. The magnet 15 is a disk-shaped permanent magnet 1
5a and a concave yoke 15b for holding the same. The length of the magnet section 15 in the axial direction is shorter than the length of the other chamber 11d of the main body case 11 in the axial direction. Thereby, the magnet part 15 can be moved in the axial direction in the other chamber 11d of the main body case 11.

According to the present embodiment, similarly to the above, the main body case 11 is fixed to, for example, the upper part of the toilet body of a Western-style toilet, and one end 13a of the rotating shaft 13 is connected to a toilet seat or a toilet lid which is an object to be controlled. To use.

When the toilet seat or the lid is closed, the first projection 13d of the rotating shaft 13 and the second projection 13d of the cam member 14 are closed.
The projections 14b are set so as to be in contact with each other, and this is set as a normal position. In this normal position, the first concave portion 13c of the rotary shaft 13 is separated from the second concave portion 14c of the cam member 14 because the convex portions of the rotary shaft 13 and the cam member 14 are in contact with each other. That is, the cam member 14 is located below the state shown in FIG. 6, and as a result, the protrusion 14e of the cam member 14 presses the magnet portion 15 and the magnetic member 12
Away from Therefore, in this state, the attraction force of the magnet portion 15 does not act.

When the toilet seat or toilet lid is opened, the rotating shaft 1
3 rotates in one direction. First convex portion 13d of rotating shaft 13
Since the first recess 13c is only formed with a predetermined width in the diametric direction, it is formed in a fan shape when viewed from the end face 13b side. Further, since the guide groove 14 d is engaged with the guide protrusion 11 b of the main body case 11, the cam member 14 does not rotate following the rotating shaft 13.
Accordingly, in the range of the predetermined angle, the second convex portion 14b of the cam member 14 keeps in contact with the first convex portion 13d of the rotating shaft 13, and during that time, the position of the magnet portion 15 does not change, and Maintain the separated state.

When the opening angle of the toilet seat or the lid reaches a predetermined angle, for example, 100 degrees, the position of the first concave portion 13c of the rotating shaft 13 matches the position of the second convex portion 14b of the cam member 14. At this time, the cam member 14 has the second convex portion 14b
The movement along the axial direction toward the rotation shaft 13 is free as much as it enters the recess 13c. At the same time, the magnet part 15 is attracted to the magnetic part 12 and is attracted to the magnetic part 12.
Unless an external force exceeding this magnetic force is applied by this magnetic force, the rotating operation of the rotating shaft 13 becomes impossible, and the toilet seat or the toilet lid can be self-supported at a desired angle.

When closing the toilet seat or the lid, an external force of a predetermined value or more is applied in the closing direction. As a result, the second convex portion 14b of the cam member 14 separates from the inside of the first concave portion 13c of the rotating shaft 13, and comes into contact with the first convex portion 13d of the rotating shaft 13 again. Further, the cam member 14 has the guide groove 14 d formed in the main body case 11.
6, it moves downward in the axial direction in FIG. 6, and the protrusion 14 e of the cam member 14 presses the magnet portion 15, and the magnet portion 15 is moved from the magnetic body portion 12. Apart. If the magnet part 15 is slightly separated from the magnetic body part 12, the click force does not work, and thereafter the toilet seat or the toilet lid is closed by its own weight.

In the case where the cam member 14 is used as in this embodiment, if the rotary shaft 13 is slightly rotated after the magnet portion 15 is attracted to the magnetic body portion 12, the magnet portion 15 can be securely rotated. Can be released.

In the case of the rotary motion support mechanism 10 of the present embodiment, as shown in FIG. 12, similarly to the embodiment shown in FIG. 1
It is also possible to adopt a structure in which a coil spring 17 constituting a damper portion, in which the coil 7b is fixed to the main body case 11, is provided. The coil spring 17 is set so as to be wound when the rotating shaft 13 rotates in one direction of the control object, for example, the closing direction, and to exert its resistance. Therefore, when the magnet unit 15 applies an external force of a predetermined value or more in a direction away from the magnetic body unit 12, the control object closes by its own weight or the like, but the control object closes slowly by the resistance force of the coil spring 17. Work.

As shown in FIGS. 13 and 14,
Similar to the embodiment shown in FIGS. 4 and 5, a main body case 11 'having a space 11'b separated by a partition 11'a (corresponding to the cap member 11a in FIG. 6) is used. In the portion 11'b, partitioning walls 11'c and 11'd are provided in which the front end surface contacts the outer surface of the extension portion 13 'connected to the rotating shaft 13 and partitions the inside in the circumferential direction. . A portion of the extension 13 'of the rotating shaft 13 having vanes 13'a and 13'b projecting along the axial direction is located in the space 11'b, and the rotating shaft 1'
The viscous liquid is filled in the outer surface of the extension 13 'and the inner surface of the space 11'b. That is, a damper unit including a viscous liquid, partition walls 11'c and 11'd, and vanes 13'a and 13'b is provided in the space 11'b. Thus, when the extension 13 ′ of the rotating shaft 13 rotates with the object to be controlled, the vanes 13′a and 13 ′ are formed.
b presses the viscous liquid, and the partition walls 11'c, 11'd
And a small gap between the outer surface of the rotating shaft 13 and the extension 13 ′ of the rotating shaft 13.
The rotation operation of 3 becomes slow. Therefore, also in the present embodiment, when an external force of a predetermined value or more is applied in a direction in which a click caused by the magnet unit 15 being attracted to the magnetic body unit 12 is released, the control object slowly closes or opens. . Note that the type of the damper portion is not limited to these, as in the embodiment shown in FIGS. 4 and 5.

[0034]

According to the rotary motion support mechanism of the present invention, since the attraction force of the magnet is used as the click mechanism, the durability is higher than that of the conventional mechanical click mechanism. And the sound generated at the time of clicking can be reduced. In addition, when the holding force at the time of clicking is adjusted, it is only necessary to change the permanent magnet constituting the magnet portion to one having a different magnetic force, and the adjustment is easy. Moreover, since only permanent magnets are replaced, the use of a magnet having a large holding force does not adversely affect the workability during assembly.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a rotary motion support mechanism of the present invention.

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

FIG. 3 is a longitudinal sectional view showing another embodiment of the rotary operation support mechanism of the present invention.

FIG. 4 is a longitudinal sectional view showing still another embodiment of the rotary operation support mechanism of the present invention.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

FIG. 6 is a longitudinal sectional view showing still another embodiment of the rotary operation support mechanism of the present invention.

FIG. 7 is a sectional view taken along line CC of FIG. 6;

FIG. 8 is an end view showing a rotation shaft used in the embodiment.

FIG. 9 is a side view showing a rotating shaft used in the embodiment.

FIG. 10 is an end view showing a cam member used in the embodiment.

FIG. 11 is a side view showing a cam member used in the embodiment.

FIG. 12 is a longitudinal sectional view showing still another embodiment of the rotary operation support mechanism of the present invention.

FIG. 13 is a longitudinal sectional view showing still another embodiment of the rotary operation support mechanism of the present invention.

FIG. 14 is a sectional view taken along line DD of FIG.

[Explanation of symbols]

 1,10 Rotational motion support mechanism 2,2 ', 11 Main body case 3,3', 13 Rotary axis 4 Click mechanism 5,15 Magnet 6,6 Magnetic body 7,17 Coil spring

Claims (7)

[Claims] 1. A cylindrical main body case, a rotating shaft, at least a part of which is inserted and supported in the main body case, and to which an object to be controlled is connected, is rotated by a predetermined rotation angle. A click mechanism for stopping the object, and the rotation mechanism supporting the control object in a rotatable manner. The click mechanism is disposed in the main body case, and is moved in the axial direction by the rotation of the rotation shaft. A possible magnet portion and a normal position in the main body case are provided so as to be axially separated from the normal position of the magnet portion, and the rotating shaft rotates by a predetermined angle so that the magnet portion moves in the axial direction. A rotating body supporting mechanism comprising: a magnetic body portion that is attracted when moved by a predetermined distance. 2. An outer diameter of a predetermined portion of a portion of the rotating shaft inserted into the main body case and an inner diameter of a corresponding inner surface of the main body case are adjusted so as to form a space therebetween. A screw portion is formed at a predetermined portion of a portion of the rotary shaft inserted into the main body case, and a magnet portion forming the click mechanism is screwed into the screw portion of the rotary shaft. A nut made of a non-magnetic material, a permanent magnet fixed to the outside of the nut, and an engaging portion fixed to the outside of the permanent magnet and formed on the outer surface of the main body case along the axial direction. The rotation operation support mechanism according to claim 1, further comprising: a yoke having an engaged portion to be engaged. 3. A first concave portion and a first convex portion are formed on an end face of a portion of the rotary shaft inserted into the main body case, and a second concave portion and a first convex portion corresponding to the first concave portion and the first convex portion are formed. Convex and second
A concave portion is formed on the end face, and a cam member that is pressed in the axial direction when the first convex portion and the second convex portion come into sliding contact is provided, and the magnet portion is pressed by the cam member being pressed in the axial direction. The rotation operation support mechanism according to claim 1, wherein the magnet portion is attracted to the magnetic body portion by being separated from the magnetic body portion and engaging the first concave portion and the second convex portion. 4. A damper unit for delaying a rotating operation of the rotating shaft in at least one direction.
3. The rotation operation support mechanism according to any one of 3. 5. The damper part, one end of which is in the main body case,
The rotation operation support mechanism according to claim 4, wherein the other end is provided with a spring connected to the rotation shaft. 6. The damper section is provided with a viscous liquid filled between a main body case and a rotating shaft.
The rotary motion support mechanism according to claim 1. 7. The damper part, one end of which is provided in the main body case,
The rotation operation support mechanism according to claim 4, wherein the rotation operation support mechanism is configured to include both a spring whose other end is connected to the rotation shaft, and a viscous liquid filled between the main body case and the rotation shaft.