JP2000183620A - Stopper mechanism for rotary body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrict a stop position within a prescribed range, while rotating a rotating body in a range of 360 degrees or more. SOLUTION: This stopper mechanism is provided with a stopper section 10 having a stopper 11, that is provided with 1st and 2nd projections branched into an L-shape that are substantially orthogonal to each other and supported turnably around a root of the projections, having a stopper fixing part 14 that restricts a turning range of the stopper 11 within a range of nearly 90 degrees and with a collision section 20 that is pressed into contact with either of the projections to turn the stopper 11. In this case, the collision section 20 is provided to a rotating body 1, and the stopper section 10 is placed on a rotation circumference of the rotating body 1, the collision section 20 is pressed into contact with either of the projections of the stopper 11 in accordance with the rotation of the rotating body 1, the stopper 11 is turned once in one direction by 90 degrees to pass the collision section 20 and restricted in a disabled turning by the stopper fixing part 14 after the turning to stop the collision section 20, thereby restricting the rotation of the rotating body 1 within the range of about 360-720 degrees.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating body stopper mechanism for restricting a rotation range of a rotating body used as an antenna mount or the like which is mounted on an antenna and rotates in an azimuth direction. The present invention relates to a rotating body stopper mechanism that can stop and regulate rotation within a predetermined range while rotating in the above range.

[0002]

2. Description of the Related Art In general, a rotating body is widely used, for example, as an antenna base on which an antenna is mounted and which rotates in an azimuth direction or as a turning means of a rotating portion of various robots. This type of rotating body usually rotates clockwise or counterclockwise around a fixed axis, and the range of rotation is restricted to a certain range according to the use or function to be used. .

For example, in the case of an antenna base that rotates an antenna in an azimuth direction, it is desirable that the rotation range is originally unlimited, especially for an in-vehicle antenna for tracking satellites. Since it is necessary to prevent cross-connection of various cables, the rotation of the antenna base is usually restricted to a certain range. Further, in the case of a turning means for turning an arm or the like of a robot, it is necessary to repeatedly turn a turning part of the arm or the like in a certain range in both directions. The turning means for turning and turning the turning part is required. The rotation is restricted within a predetermined range.

As a restricting means for restricting the rotation range of the rotating body to a predetermined range, a stopper mechanism as shown in FIG. 10 has been used. FIG. 10 is a schematic perspective view schematically showing a conventional general rotating body stopper mechanism. In the figure, 101 is a rotating body,
It is mounted on the upper surface of the fixed portion 102 and rotates about a shaft 102a protruding from the upper surface of the fixed portion 102. The rotator 101 can be used as an antenna base if an antenna is mounted on the upper surface, and can be used as a turning means of a robot if an arm or the like is provided.

[0005] As a stopper mechanism for restricting the rotation range of the rotating body 101 to a certain range, a stopper portion 110 and a collision portion 120 as shown in FIG. 10 are provided. The stopper 110 protrudes from a side surface of the fixed part 102 on which the rotating body 1 is mounted. The collision portion 120 is provided so as to project from the side surface of the rotating body 101 toward the fixed portion 102, and the stopper portion 1 on the fixed portion 102 side is provided.
10.

According to such a stopper mechanism, when the rotating body 101 rotates, the collision portion 120 also rotates with it, and when the rotating body 101 rotates within a predetermined range, that is, approximately 360 degrees in the case shown in FIG. The collision part 120 contacts the stopper part 110 on the fixed part 102 side. As a result, the rotating body 101 cannot rotate any more, and the rotation range is restricted.

[0007] The rotating body 101 shown in FIG.
Since the stopper portion 110 is provided at one place,
The restricted rotation range is substantially 360 degrees, but by providing a plurality of stopper portions 110 on the circumference of the rotating body 1,
The rotation range can be regulated within a desired range of less than 360 degrees.

[0008]

However, in such a conventional stopper mechanism for a rotating body, the rotating range of the rotating body is always restricted within a range of approximately 360 degrees.
The rotating body could not be rotated over a wider range. That is, in the conventional stopper mechanism, since at least one stopper portion is fixed on the rotating circumference of the rotating body, when the rotating body rotates in any one of the clockwise direction and the counterclockwise direction, a maximum of approximately 360 At the time of rotation, the collision portion abuts on the stopper portion, and it is impossible for the rotating body to rotate any further.

As described above, in the conventional stopper mechanism in which the rotating body can rotate only within a range of about 360 degrees at the maximum, there is a sufficient requirement for the rotating body which is actually used as a turning means of various antenna mounts or a rotating portion of the robot. It was difficult to respond. For example, in an antenna mount that rotates an antenna in an azimuth direction, particularly in an antenna mount used for a satellite tracking type antenna, the antenna can be moved in an azimuth direction as wide as possible as long as a cable crossing or the like does not occur. It is desirable to rotate.

However, in the conventional stopper mechanism, 36
Since rotation beyond 0 degree is impossible, it was not possible to rotate even slightly beyond the range of 360 degrees. For this reason,
The conventional antenna mount has a problem that it is difficult to quickly and accurately track a satellite.

In a rotating part such as an arm of a robot, there is a demand for rotating and reversing the arm within a predetermined range of one rotation or more, for example, within a range of two rotations. More than one revolution, ie 3
It could not be rotated more than 60 degrees. For this reason,
In a conventional robot, when the arm is turned over a range of 360 degrees or more, the problem is solved by combining two or more rotating bodies, and the structure of the robot becomes complicated and large, and the rotating operation becomes complicated. Had occurred.

The present invention has been proposed to solve such a problem of the prior art. The rotating body is rotated within a predetermined range while rotating the rotating body over 360 degrees. It is an object of the present invention to provide a stopper mechanism for a rotating body that can be regulated.

[0013]

According to a first aspect of the present invention, there is provided a stopper mechanism for a rotating body having two or more projecting portions that are branched, and these two or more projecting portions are connected to each other. A stopper having a stopper rotatably supported about a root portion, a stopper for regulating a rotation range of the stopper, and the stopper contacting one of the two or more protrusions. A stopper, and one of the stopper portion and the collision portion is provided on the rotating body, and the other is disposed on the rotating circumference of the rotating body,
With the rotation of the rotating body, one of the two or more protrusions comes into contact with the collision portion, and the stopper rotates within a range restricted by the stopper stopper and passes through the contacted collision portion. By stopping the rotation, the rotation of the rotating body is restricted within a certain range.

In particular, in the second aspect, the stopper includes first and second protrusions branched into a substantially orthogonal L-shape, and the stopper stops the rotation of the stopper by approximately 90 degrees. By regulating in the range, the collision portion abuts on the first or second protrusion with the rotation of the rotating body and rotates the stopper substantially 90 degrees, whereby the stopper is Only once it rotates about 90 degrees in one direction to pass through the collision section, and after the rotation, the stopper section stops the collision section because it is not allowed to rotate. Every time~
It is configured to regulate within a range of 720 degrees.

According to the rotating body stopper mechanism of the present invention having the above-described structure, the stopper comprising the two protrusions orthogonal to the L-shape is rotatably supported at substantially 90 degrees. And a collision portion for rotating the stopper by contacting the stopper portion on the rotation circumference is arranged on the other side, so that the collision portion contacts and collides with the stopper as the rotating body rotates. Thus, the stopper can be rotated and regulated in a range of approximately 90 degrees.

Thus, the stopper rotates approximately 90 degrees only once in one direction of rotation of the rotating body, and once rotated, the stopper stops the stopper so that it cannot rotate in the same direction. Passes through the rotating stopper at the time of the first abutment, and thereafter, when it collides with the stopper with the rotation of the rotating body, it is restricted by the stopper and cannot pass, and the rotation of the rotating body is stopped. .

Accordingly, the rotating body provided with the present stopper mechanism rotates 360 degrees or more in one rotation direction,
Thereafter, the rotation is restricted in a range where the stopper and the collision portion abut and collide with each other, so that the rotating body can be rotated and stopped in a desired range of 360 degrees or more.

According to a third aspect of the present invention, the rotating body rotates clockwise and counterclockwise in both directions.

According to the rotating body stopper mechanism of the present invention having such a configuration, the rotating body is provided by arranging the stopper portion and the collision portion of the stopper mechanism one by one on the rotating circumference of the rotating body. Rotate more than 360 degrees in one direction,
Thereafter, the rotation is stopped when the stopper comes into contact with the collision portion again, so that it is possible to rotate within a range of approximately 720 degrees at the maximum.

Thus, the antenna can be rotated within a range of 360 degrees or more, or a rotating portion such as a robot arm can be freely rotated within a desired range of two rotations or less, without causing a cable crosstalk or the like. Can be. In particular, by allowing the rotating body to rotate clockwise in both directions, a maximum of approximately 72 times each in the clockwise direction and the counterclockwise direction.
An antenna base that can rotate in a range of 0 degrees, enables a wider range of rotation, and always requires bidirectional rotation in azimuth, such as a satellite tracking antenna, or a robot that requires repeated turning operations It is suitable for the turning means.

Further, in the stopper mechanism of the rotating body according to the fourth aspect, when the stopper is restricted by the stopper stop, the stopper is held unrotatably and the collision portion abuts. The configuration is provided with stopper holding means for releasing the holding.

According to the rotary body stopper mechanism of the present invention having the above-described structure, the stopper is held by the stopper holding means, and the stopper is held in a state where the stopper is restricted by the stopper except when the collision portion collides. Position is maintained. Accordingly, even if the stopper is configured to be rotatable, the mounting position of the stopper is restricted in consideration of the fact that the stopper is rotated by vibration or the like and the stopper is rotated by the influence of gravity. Disappears.

Further, in the stopper mechanism for a rotating body according to a fifth aspect, a plurality of the stopper portions are provided on the rotating body or on the rotating circumference of the rotating body, and the rotation of the rotating body is 36.
It is configured to stop within a range of 0 degrees to less than 720 degrees.

According to the rotating body stopper mechanism of the present invention having such a configuration, by providing a plurality of stoppers on the rotating circumference of the rotating body, the collision portion is regulated by the plurality of stoppers, and the rotating body is moved. It is possible to stop and regulate in an arbitrary range of 360 degrees or more and less than 720 degrees. Thereby, the rotating body can be rotated and stopped in a desired range of 360 degrees to 720 degrees,
In particular, it is suitable as an antenna base of an antenna that repeatedly rotates within a predetermined azimuth range, or as a rotation restricting unit of a turning unit of a robot that rotates an arm one or more rotations and reverses within a predetermined range within two rotations.

According to a sixth aspect of the present invention, there is provided a stopper mechanism for a rotating body, wherein the rotating body is an antenna base on which an antenna is mounted. On the other hand, the stopper mechanism for a rotating body according to claim 7 is configured such that the rotating body is a turning means of a robot.

[0026]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a rotary member according to an embodiment of the present invention; First Embodiment First, a first embodiment of a stopper mechanism for a rotating body according to the present invention will be described with reference to FIGS. FIG. 1 is a schematic side view showing a case where a rotating body having a stopper mechanism according to the first embodiment of the present invention is used as an antenna base. 2A and 2B are schematic perspective views showing a stopper mechanism of the rotating body according to the present embodiment, wherein FIG. 2A shows a state immediately before the collision portion comes into contact with the stopper as the rotating body rotates, and FIG. This shows a state in which the part has passed by rotating the stopper.

FIG. 3 is an enlarged front view showing a state in which the stopper of the stopper mechanism according to the present embodiment comes into contact with and passes through the collision portion. FIG. (B) is a state in which the collision portion has been rotated by rotating the stopper, and (c) is a state in which the collision portion is in contact with the stopper for the second time and rotation of the rotating body is stopped. Is shown.

Further, FIGS. 4A and 4B are explanatory views showing the rotating state of the rotating body whose rotation is restricted by the stopper mechanism of the present embodiment, wherein FIG. 4A shows the rotating state of the rotating body, and FIG. Is rotated once, and the collision portion and the stopper make the first contact, (b) is a state in which the rotating body is further rotated and the collision portion is passing while rotating the stopper, and (c) is a state in which the rotating body is ( This shows a state in which the rotation of the rotating body is stopped by making another rotation from the state of b) and making the collision portion and the stopper abut on the second time.

In these figures, 1 is a rotating body,
Fixing part 2 which is formed in a cylindrical shape and which is also formed in a cylindrical shape
, And rotates about the axis 2 a of the fixed part 2. Here, in the present embodiment, the rotator 1 is configured to rotate clockwise and counterclockwise in both directions, and is an antenna base on which the antenna 3 is mounted on the upper surface as shown in FIG.

As means for restricting the rotation range of the rotating body 1 to a certain range, a stopper mechanism 4 including a stopper portion 10 and a collision portion 20 is provided. In this embodiment, the case where the rotating body 1 is used as an antenna base is shown. However, if the rotating body 1 is provided with a rotating portion such as an arm, it is needless to say that the rotating body 1 can be used as a turning means of a robot.

The stopper 10 is disposed on the side of the fixed part 2 on which the rotating body 1 is mounted. The stopper portion 10 includes a stopper 11 formed substantially in an L shape, a support portion 12 that rotatably supports the stopper 11, and a stopper 11.
And a stopper 14 for restricting the rotation range of. Each of the components constituting the stopper portion is mounted and arranged on a mounting table 15 provided on the side surface of the fixed portion 2, and is positioned at a position where it interferes with a collision portion 20 described later on the rotating body 1 side. .

The stopper 11 is formed in a thick plate shape having a first projection 11a and a second projection 11b which are substantially orthogonal to the L-shape, and the first and second projections 11a, 1b are formed.
The root portion of 1b is rotatably supported by the support portion 12. As a result, the stopper 11 is
Can rotate in the clockwise and counterclockwise directions about the root of the projection supported by the center.

In the present embodiment, the support portion 12 for supporting the stopper 11 is, as shown in FIG.
1, a plate-like member 12a located on the outer surface side, and a shaft-like member 12b provided on the side surface of the plate-like member 12a and the fixing portion 2. The shaft-like member 12b is axially passed through the root portion of the stopper 11. Thereby, the stopper 11 is rotatably supported.

As described above, in this embodiment, the stopper 1
The plate-like member 12a of the support portion 12 that rotatably supports 1 is provided only on one surface side of the stopper 11, and the other surface side supports the stopper 11 using the side surface of the fixed portion 2. . Accordingly, the configuration of the support portion 12 can be simplified, and the inner side surface of the stopper 11 can be directly opposed to the side surface of the fixed portion 2, and a stopper position holding unit described later can be easily provided.

It should be noted that the support portion 12 may be in a form other than this embodiment as long as it can rotatably support the stopper 11. For example, the plate-like member 12a of the present embodiment may be arranged and supported on both surfaces of the stopper 11, and conversely, as in the embodiment shown in FIG. 5 or FIG. May be omitted, and the support may be made only by the shaft-shaped member 12b and the outer surface on the fixed portion 2 side.

As shown in FIG. 2, the stopper stopper 14 for regulating the rotation of the stopper 11 is formed of a plate-like member disposed on the lower surface side of the stopper 11, and is mounted on the upper surface of the mounting table 15 and disposed. And the plate member 12 of the support portion 12
The lower end of “a” is fixed, and functions as a holder for each part of the stopper part 10.

Then, on the upper surface of the stopper stopper 14,
L-shaped outer edge of stopper 11 supported by support portion 12 (outer edge of first projection 11a or second projection 11b)
Are brought into surface contact with each other (see FIG. 3). As a result, when the stopper 11 rotates about the shaft member 12b of the support portion 12, as shown in FIG. 3, the outer edges of the first protrusion 11a and the second protrusion 11b alternately stop. And the rotation range of the stopper 11 is restricted to a range of 90 degrees.

In this embodiment, the stopper stopper 14 is formed by a plate-like member in which the outer edge of the L-shaped stopper 11 comes into contact with the surface in a state of surface contact. What is necessary is just to be able to contact the outer edge of the stopper 11 and regulate the rotation. For example, as in an embodiment shown in FIG. 5 or FIG. 6, which will be described later, a pin-shaped member is protruded from the side surface of the fixed portion 2, and the outer edge of the stopper 11 is brought into contact with the pin-shaped member to restrict rotation. You may do so.

The collision portion 20 is provided so as to protrude from the side surface of the rotating body 1 toward the fixed portion 2, and as shown in FIG. 3, the first projection 11 a or the second projection 11 a of the stopper portion 10. The projection 11b collides and abuts from a lateral direction orthogonal to the projection 11b. And the collision part 20 is the rotating body 1
Of the first or second protrusion 11a. 11b, so that the stopper 11 rotates clockwise and counterclockwise in the 90-degree range every 90 degrees (see FIG. 3).

In the present embodiment, the stopper holding means for holding the stopper 11 in a non-rotatable state while the stopper 11 is regulated by the stopper stopper 14 and releasing the holding by the contact of the collision portion 14 is provided. It is prepared. As shown in FIG. 3, the stopper holding means includes plungers 16a, 1
6b and concave portions 17a and 17b formed on the inner surface of the stopper 11 facing the fixed portion 2.

The plungers 16a, 16b are hemispherically projecting from the side surface of the fixing portion 2. When the stopper 11 rotates 90 degrees, the first and second projections 11a, 11b are formed. 11b are formed at positions facing each other (see FIG. 3). A hemispherical concave recess 17a, 17b is formed on a surface of the first immediately preceding portion 11a and the second protrusion 11b facing the plungers 16a, 16b so that the plungers 16a, 16b can be engaged. It has become.

As described above, the hemispherical plungers 16a,
By providing a stopper holding means comprising the recess 16a and the recesses 17a, 17b, the plunger 16a and the recess 17a are provided.
Is engaged, or the plunger 16b and the concave portion 17b are engaged, so that the position of the stopper 11 is held in a state where the stopper 11 is regulated by the stopper stopper 14.

Since the plunger 16 and the recess 17 are each formed in a spherical shape, the collision portion 20 is
1 is smoothly released by colliding with 1. As a result, the stopper 11 that is configured to be rotatable is held, so that the stopper 11 does not rotate freely due to vibration or the like, and takes into account that the stopper 11 rotates due to the influence of gravity. The mounting position is not restricted.

The stopper mechanism 4 having the above-described structure is provided with the first or second protrusion 11a of the stopper portion 10 provided on the rotating body 1 and the stopper portion 10 provided on the fixed portion 2 side. , 11b abut on the rotation circumference by the rotation of the rotating body 1, and the stopper 10 rotates 90 degrees only once in one rotation direction of the rotating body 1.

Thus, for example, as shown in FIGS. 2 and 3, when the rotating body 1 rotates clockwise, first, the first protrusion 11a is in an upright state (FIG. 2 (a) and FIG. 3 (a), the collision portion 20 rotating together with the rotating body 1 comes into contact with the first protrusion 11a from the right side in the drawing, so that the collision portion 20 rotates the stopper 11 counterclockwise. It can pass while moving (see FIGS. 2B and 3B). At this time, in the stopper 11 rotated by 90 degrees, the first protrusion 11a falls down in the horizontal direction, the plunger 16a engages with the recess 17a, and the second protrusion 11b stands upright.

When the rotating body 1 further rotates, the collision portion 20 moves from the right side of the drawing toward the stopper 11 again with the rotating body 1 having made one rotation, and collides with the second protrusion 11b. At this time, the first protrusion 11a in a state where the stopper 11 is tilted in the horizontal direction is
4, so that it cannot be rotated counterclockwise. Therefore, the collision portion 20 that has come into contact with the second protrusion 11b is restricted by the stopper 11 and cannot pass, and the rotation of the rotating body 1 stops.

When the rotating body 1 rotates counterclockwise,
The rotation is regulated by the operation reverse to the above.
In this way, the rotation of the rotating body 1 whose rotation is restricted by the stopper mechanism 4 is restricted within the range of 360 degrees to 720 degrees. That is, by arranging the stopper portion 10 and the collision portion 20 of the stopper mechanism 4 one by one on the rotation circumference of the rotating body 1, the rotating body 1 rotates 360 degrees or more in one direction. Since the rotation is stopped when the collision portion 20 contacts the second time, it is possible to rotate within a range of up to 720 degrees.

As a result, the antenna can be rotated within a range of 360 degrees or more without causing crosstalk of cables (not shown). In particular, in the present embodiment, since the rotating body 1 is rotatable clockwise in both directions,
Rotation is possible within a maximum range of 720 degrees for each rotation direction, so that a wider range of rotation is possible, and it is suitable as an antenna base which always needs to rotate in both directions of azimuth, such as a satellite tracking antenna.

As long as this stopper mechanism is provided,
The configuration of the rotating body 1 and the fixed part 2 is not limited to the cylindrical rotating body 1 and the fixed part 2 which are stacked in two stages as described above. For example, as shown in FIG. 5 or FIG. The fixing part 2 can be implemented in various forms. FIGS. 5 and 6 are schematic perspective views schematically showing other embodiments of the rotating body 1 and the fixed portion 2 each having the stopper mechanism according to the present embodiment.

For example, as shown in FIG. 5, the rotating body 1 and the fixed portion 2 may be configured to be present on the same plane. That is, the rotating body 1 shown in FIG. 5 is configured to rotate while being located on the inner peripheral side with respect to the fixed portion 2 located on the outer peripheral side. In this case, the stopper 11 of the stopper portion 10 is disposed so that the rotation surface is horizontal to the upper surface of the fixed portion 2 so as to collide with the collision portion 20 projecting from the upper surface of the rotating body 1.

As shown in FIG. 6, the rotating body 1 may be formed in a belt shape, and one end thereof may be attached to the shaft 2a of the fixed portion 2. In this case, the other end of the rotating body 1 projects from the upper surface edge of the fixed portion 2, and the projected portion of the rotating body 1 is configured as a collision portion. The other end of the rotating body 1 comes into contact with a stopper 11 of a stopper 10 provided on a side surface of the fixed portion 2 so that rotation is restricted.

As shown in FIGS. 5 and 6,
The stopper stopper for restricting the rotation of the stopper 11 is different from the stopper stopper 14 composed of a plate-like member shown in FIGS. The outer edge of the stopper 11 is brought into contact with the pin-shaped stopper stopper 14 to restrict the rotation. Thus, the stopper stopper 14 is
Any shape may be used as long as the rotation can be restricted by contacting the outer edge of the.

Next, the operation of the rotating mechanism stopper mechanism of the present embodiment having the above-described configuration will be described with reference to FIG. 4 taking the case where the rotating body 1 rotates clockwise as an example. First, the rotating body starts rotating clockwise from the position shown in FIG. At this time, as shown in FIG. 4A, the stopper 11 is in a state in which the first projection 11a is upright and the second projection 11b is horizontally inclined. In this state, the second protrusion 1
Since the plunger 16b is engaged with the concave portion 17b formed in 1b, the stopper 11 is held at the position shown in FIG.

When the rotating body 1 rotates substantially once, the collision portion 20
Moves to the position shown in FIG. 4B, and collides with the first protrusion 11a of the stopper 11 from the right side in the drawing. In this state, the rotation of the stopper 11 in the clockwise direction is restricted by the stopper stopper 14, and the stopper 11 is rotatable in the counterclockwise direction. The protrusion 11a is pressed, the stopper 11 rotates counterclockwise, the first protrusion 11a falls down horizontally, and the second protrusion 11b is in an upright state (shown in FIG. 4C). Status).

As a result, the collision portion 20 passes through the stopper portion 10 while rotating the stopper 11, and the rotating body 1 can further rotate. The rotation of the stopper 11 by the collision portion 20 causes the second protrusion 1
The engagement between the concave portion 17b of 1b and the plunger 16b is disengaged, and the concave portion 17a of the first projection 11a that has fallen horizontally and the plunger 16a are engaged, so that the stopper 11 is held in the state shown in FIG. I have.

At this point, the rotating body 1 is moved 3
This means that it has turned 60 degrees. Then, when the rotating body 1 continues to rotate and makes another rotation, the collision portion 20 moves to the position shown in FIG.
It moves to the position shown in (d) and collides with the second projection 11b from the right side in the drawing. At this time, since the stopper 11 is in a state in which the stopper 11 cannot rotate in the counterclockwise direction, the collision portion 20 abutting on the second projection 11b is restricted by the stopper 11 and passes therethrough. And the rotation of the rotating body 1 stops. When the rotating body 1 rotates counterclockwise, the rotation is restricted by the reverse operation.

As described above, according to the stopper mechanism of the rotating body of the present embodiment, the stopper 11 having the two L-shaped orthogonal projections 11a and 11b is rotatably supported by 90 degrees. The stopper portion 10 and the collision portion 20 are brought into contact with each other on the circumference of rotation with the rotation of the rotating body 1 so that the collision portion 20 contacts and collides with the stopper 11, and the stopper 11 is turned 90 degrees. Is rotated and regulated in the range of.

As a result, the stopper 11 rotates 90 degrees only once in one direction of rotation of the rotating body, and once rotated, the stopper 11 is restricted from rotating in the same direction by the stopper stopper 14. The part 20 passes through the rotating stopper 11 at the time of the first abutment, and thereafter, when it collides with the stopper 11 with the rotation of the rotating body, it is restricted by the stopper 11 and cannot pass, and the rotation of the rotating body stops. Will be done.

Therefore, the rotating body 1 provided with the stopper mechanism 4 rotates by 360 degrees or more in one direction of rotation, and thereafter, the rotation is restricted within a range where the stopper 11 and the collision portion 20 come into contact and collide. Therefore, the rotating body 1 can be rotated and stopped within a desired range of 360 degrees or more.

Further, in this embodiment, the stopper 11 is held by the stopper holding means, and the position of the stopper is kept in a state where it is regulated by the stopper stopper 14 except when the collision portion collides. Even if is configured to be rotatable, the mounting position of the stopper may be restricted in consideration of the fact that the stopper 11 rotates freely due to vibration or the like and the stopper 11 rotates due to the influence of gravity. Disappears.

[Second Embodiment] Next, a second embodiment of the rotating body stopper mechanism of the present invention will be described with reference to FIG. FIG. 7 is a schematic plan view schematically showing a stopper mechanism of a rotating body according to the second embodiment of the present invention.

As shown in the figure, the stopper mechanism of the rotating body of the present embodiment is a modified embodiment of the stopper mechanism of the rotating body in the first embodiment described above, and is provided at one place in the first embodiment. The stopper portion 10 is provided at two places. Therefore, the other components are the same as in the first embodiment, and a detailed description thereof will be omitted.

That is, as shown in FIG. 7, in the present embodiment, the stopper portions 10 are arranged at two positions on the side surface of the fixed portion 2 on the rotation circumference of the rotating body 1 with an interval of 180 degrees. By providing the stopper portions 10 at two places in this manner, the rotating body 1 can be moved approximately 54 times as shown by the arrow in FIG.
The rotation is restricted in the range of 0 degrees.

In the present embodiment, the stoppers 10 are provided at two positions on the rotation circumference of the rotating body 1 at 180-degree intervals. In addition, the stoppers 10 are provided at three or more positions. Or the intervals can be arbitrarily changed. That is, by providing a plurality of the stopper portions 10 on the rotating circumference of the rotating body 1 at arbitrary intervals, the collision portion 20 is regulated by the plurality of stoppers 11, and the rotating body 1 is in a range of 360 degrees or more and 720 degrees. It is possible to stop and regulate in an arbitrary range of less than.

As a result, the rotating body 1 is not less than 360 degrees and 7
Since it can be rotated and stopped in a desired range of 20 degrees or less, particularly in an antenna base of an antenna that repeatedly rotates in a predetermined azimuth angle range, or in a predetermined range within two rotations by rotating the arm more than one rotation. It is suitable as a rotation restricting means of the turning means of the robot which is turned over.

[Third Embodiment] A third embodiment of the rotating body stopper mechanism of the present invention will be described with reference to FIGS. FIG. 8 is an enlarged front view showing a state in which the stopper of the stopper mechanism according to the third embodiment of the present invention comes into contact with and passes through the collision portion. FIG. The state just before the first contact,
(B) shows a state in which the collision portion has passed by rotating the stopper, and (c) also shows a state in which the collision portion has contacted and passed through the stopper for the second time.

FIG. 9 is an enlarged front view showing a state in which the stopper of the stopper mechanism according to the present embodiment abuts on and passes through the collision portion, following FIG. 8, and FIG. The part has passed while rotating the stopper,
(B) shows a state in which the collision portion contacts the stopper for the third time and the rotation of the rotating body is stopped.

As shown in these figures, the stopper mechanism of the rotating body according to the present embodiment is a modified embodiment of the stopper mechanism of the rotating body in the first embodiment described above. In contrast to the first and second projections 11a and 11b that diverge in directions orthogonal to each other, in the present embodiment, the stopper 11 includes the first, second, and third projections that diverge in three directions. Parts 11c, 11d, 11e
It has. The other components are the same as those of the first embodiment, and the detailed description is omitted.

As shown in FIGS. 8 and 9, the stopper 11 of the present embodiment has three projections in which the collision portions 20 abut and collide with each other in three directions at substantially equal intervals. It has one protrusion 11c, second protrusion 11d, and third protrusion 11e. These three projections 11c,
11d and 11e are formed so as to branch in three directions at an interval of approximately 60 degrees from each other, as shown in the figure, and each of the projections protrudes on the rotation circumference of the collision portion 20 and contacts the collision portion 20. It comes into contact.

The three projections 11c, 11
As shown in FIGS. 8 and 9, the stopper stopper 14 for restricting the rotation of the stopper 11 of the present embodiment, which is provided with d and 11 e, protrudes from the outer surface of the fixed part and is disposed below the stopper 11. The outer edges of both sides of the stopper 11 (the outer edges of the first projection 11c or the third projection 11e) are brought into contact with each other. As a result, the stopper 11 is
8 and 9, the first protrusion 11c and the third protrusion 11 are rotated as shown in FIGS.
Each outer edge of e alternately comes into contact with the stopper stopper 14, and the rotation range of the stopper 11 is restricted to a range of approximately 120 degrees.

The stopper 11 of the present embodiment is configured to rotate when the collision portion 20 collides and abuts, and does not rotate unless the collision portion 20 collides. That is, the stopper 11 is supported by the support portion 12 so as not to rotate due to vibration other than the collision of the collision portion 20 or its own weight.

Here, the structure for supporting the stopper 11 so as not to rotate except for the collision of the collision portion 20 is as follows.
Although not particularly shown, for example, similarly to the above-described first embodiment, the outer surface of the fixing portion 2 and the three protrusions 11c, 11d,
11e may be provided with irregularities for removably engaging the support portion 1e.
By disposing a sliding contact member that comes into contact with the stopper 11 with frictional resistance on the outer surface of the second shaft-shaped member 12 b and the fixed portion 2, the stopper 11 is non-rotatably supported except at the time of collision of the collision portion 20. Can be.

In the stopper mechanism of this embodiment having such a configuration, the first, second, and third protrusions 11 of the collision portion 20 on the rotating body 1 side and the stopper 11 on the fixed portion 2 side.
When the rotating body 1 rotates, c, 11d, and 11e abut on the rotating circumference, and the stopper 11 rotates twice by 60 degrees in one rotation direction of the rotating body 1.

Thus, in the present embodiment, as shown in FIGS. 8 and 9, when the rotating body 1 rotates clockwise, first, the first projection 11a is in an upright state (FIG. 8).
In the state shown in (a)), the collision portion 20 that rotates together with the rotating body 1 moves from the right side in the drawing to the first protrusion 11c.
8, the collision portion 20 can pass while rotating the stopper 11 in the counterclockwise direction (FIG. 8).
(B)). At this time, the stopper 11 rotated substantially 60 degrees is in a state in which the first protrusion 11c is inclined 60 degrees to the left in the drawing, and the second protrusion 11d is in an upright state on the rotation circumference of the collision portion 20. Protrude into.

When the rotating body 1 rotates as it is,
The colliding portion 20 moves from the right side of the drawing toward the stopper 11 again with the rotating body 1 having made one rotation, and collides with the second protrusion 11d (see FIG. 8C). At this time, the stopper 11 is not in contact with the stopper stopper 14,
Since it is in a rotatable state, the second protrusion 11d
The collision portion 20 that has come into contact with is able to pass while rotating the stopper 11 in the counterclockwise direction (FIG. 9A).
reference). Therefore, the rotating body 1 can make another rotation.

The rotated stopper 11 is rotated substantially 60 degrees, the second protrusion 11d is inclined 60 degrees to the left in the drawing, and the first protrusion 11c comes into contact with the stopper stopper 14, and The third protruding portion 11e protrudes on the rotation circumference of the collision portion 20 in an upright state. And the rotating body 1
Is rotated, the colliding part 20 moves from the right side of the drawing toward the stopper 11 again with the rotating body 1 that has made another rotation, and collides with the third protrusion 11e.

At this time, the stopper 11 is restricted from rotating in the counterclockwise direction because the first projection 11c is in contact with the stopper stopper 14. Therefore, the collision portion 20 that has come into contact with the third protrusion 11d is restricted by the stopper 11 and cannot pass through, so that the rotation of the rotating body 1 is stopped.

As described above, in the present embodiment, the stopper 1
Three protrusions 10c, 10d, 1 where 1 branches in three directions
0e, the rotation body 1 of which rotation is regulated.
Can rotate approximately three times, with a rotation range of approximately 1080
It will be regulated within the degree. This makes it possible to rotate the rotating body 1 in a wider range than in the above-described first and second embodiments, and it is possible to meet more various needs as a stopper mechanism for the rotating body. Therefore, it is possible to restrict the rotation of the rotating body in a wide and various range by adopting a stopper having a protrusion that branches into two or more in addition to the stopper 11 that branches in three directions of the present embodiment. Become.

The stopper mechanism of the rotating body of the present invention described above is not limited to the above embodiment, and it goes without saying that various modifications can be made within the scope of the present invention. . First, as described above, as long as the stopper mechanism of the present invention can be applied, the rotating body and the fixed portion may have any form. Therefore, for example, the positional relationship between the rotating body and the fixed portion can be reversed from that in the first embodiment, and the fixed portion can be disposed on the upper surface of the rotating body. They may be arranged side by side.

In the above embodiment, the stopper portion and the collision portion are both provided with the stopper portion on the fixed portion side and the collision portion on the rotating body side. Even if the stopper portion is provided on the rotating body side and the collision portion is provided on the fixed portion side, the same effect as in the above-described embodiment can be obtained.

Further, the rotating body provided with the stopper mechanism of the present invention is mainly used as an antenna base or a turning means of a robot, but may be used for other purposes. That is, the present invention sets the rotation to 360
The present invention can be applied to all rotating bodies that need to be regulated within a certain range of degrees or higher.

[0082]

As described above, according to the stopper mechanism for a rotating body of the present invention, the rotating body can be stopped and regulated within a predetermined range while rotating the rotating body over a range of 360 degrees or more.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a case where a rotating body having a stopper mechanism according to a first embodiment of the present invention is used as an antenna base.

FIG. 2 is a schematic perspective view schematically illustrating a stopper mechanism of a rotating body according to the first embodiment of the present invention, and FIG. 2A illustrates a state immediately before a collision portion comes into contact with a stopper as the rotating body rotates. (B) shows a state in which the collision portion has passed by rotating the stopper.

FIG. 3 is an enlarged front view showing a state in which the stopper of the stopper mechanism of the first embodiment of the present invention comes into contact with and passes through the collision portion, and FIG. The state immediately before the first contact, the state shown in (b) is the state in which the collision portion has rotated the stopper, and the state shown in (c) is the state in which the collision part abuts the stopper for the second time, and the rotation of the rotating body is stopped. The state is shown.

FIG. 4 is an explanatory diagram showing a rotation state of a rotating body whose rotation is restricted by a stopper mechanism according to the first embodiment of the present invention;
(A) is a state in which the rotating body starts rotating, (b) is a state in which the rotating body makes one rotation, and the collision portion and the stopper make a first contact,
(B) is a state in which the rotating body further rotates and the collision portion passes while rotating the stopper, and (c) is a state in which the rotating body makes another rotation from the state of (b), and the collision portion and the stopper come into contact with each other for the second time. This shows a state in which the rotation of the rotating body is stopped by contact.

FIG. 5 is a schematic perspective view schematically showing another embodiment of a rotating body and a fixing portion provided with a stopper mechanism according to the present invention.

FIG. 6 is a schematic perspective view schematically showing another embodiment of a rotating body and a fixing portion provided with a stopper mechanism according to the present invention.

FIG. 7 is a schematic plan view schematically showing a stopper mechanism of a rotating body according to a second embodiment of the present invention.

FIG. 8 is an enlarged front view illustrating a state in which a stopper of a stopper mechanism and a collision portion of the third embodiment of the present invention come into contact with and pass through, and FIG. A state immediately before the first contact with the stopper, (b) shows a state in which the collision unit has rotated the stopper and passed therethrough, and (c) shows a state in which the collision unit has also contacted and passed the stopper for the second time. .

FIG. 9 is an enlarged front view showing a state where the stopper of the stopper mechanism according to the third embodiment of the present invention abuts on and passes through the collision portion, where FIG. 8A shows the state in which the rotating body rotates. A state in which the collision portion has passed while rotating the stopper,
(B) shows a state in which the collision portion contacts the stopper for the third time and the rotation of the rotating body is stopped.

FIG. 10 is a schematic perspective view schematically illustrating a conventional stopper mechanism of a general rotating body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotating body 2 Fixed part 10 Stopper part 11 Stopper 11a First projection part 11b Second projection part 12 Support part 14 Stopper stop 16 Plunger 17 Depression 20 Collision part

Claims (7)

[Claims] 1. A stopper having two or more projecting portions that are branched and rotatably supported around a root portion where the two or more projecting portions are joined, and a stopper that regulates a rotation range of the stopper. A stopper portion having a stopper, and a collision portion that contacts one of the two or more projection portions and rotates the stopper, and one of the stopper portion and the collision portion is provided on the rotating body. The other is disposed on the rotating circumference of the rotating body, and one of the two or more protrusions comes into contact with the collision portion with the rotation of the rotating body, and the stopper is connected to the stopper stopper. A rotation mechanism for a rotating body, wherein the rotating mechanism is configured to rotate in a restricted range to pass and stop the abutting collision portion, thereby restricting rotation of the rotating body within a certain range. 2. The method according to claim 1, wherein the stopper includes first and second protrusions branched into a substantially orthogonal L-shape, and the stopper stops restricting rotation of the stopper within a range of substantially 90 degrees. Thereby, the collision portion abuts on the first or second protrusion with the rotation of the rotating body and rotates the stopper approximately 90 degrees, whereby the stopper is rotated once in one direction. Only rotate about 90 degrees to pass through the collision part,
After the rotation, the stopper is stopped from rotating by the stopper and the collision portion is stopped, and the rotation of the rotating body is substantially 360 ° to 72 °.
2. The stopper mechanism for a rotating body according to claim 1, wherein the stopper is restricted within a range of 0 degrees. 3. The stopper mechanism for a rotating body according to claim 1, wherein the rotating body rotates in both a clockwise direction and a counterclockwise direction. 4. A stopper holding means for holding the stopper in a non-rotatable manner when the stopper is restricted by the stopper stopper, and releasing the holding when the collision portion comes into contact with the stopper. 4. A stopper mechanism for a rotating body according to 1, 2, or 3. 5. The stopper according to claim 1, wherein a plurality of the stoppers are provided on the rotating body or on a rotating circumference of the rotating body.
Or a stopper mechanism for a rotating body according to 4. 6. The rotating body stopper mechanism according to claim 1, wherein said rotating body is an antenna base on which an antenna is mounted. 7. The rotating body stopper mechanism according to claim 1, wherein said rotating body is a turning means of a robot.