JP2527114B2 - Spherical motion mechanism by spherical gear - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spherical movement mechanism using a spherical gear.

[0002]

2. Description of the Related Art For example, a doll of a mechanical clock makes a complicated movement. The vehicle camera also changes its angle in various directions. Typical of these movements are movements obtained by combining movements in the x direction (horizontal direction) and y direction (vertical direction). In order to obtain this combined operation, conventionally, a motor and a train wheel drive an x-direction drive gear, and the x-direction drive gear moves a doll, a camera, and the like in the x-direction. The y-direction driving gear is driven, and the doll, the camera, etc. are moved in the y-direction by the y-direction driving gear, and these actions are combined.

[0003]

Therefore, the conventional horizontal / vertical combined movable mechanism requires the x-direction driving gear and the y-direction driving gear, which makes it difficult to miniaturize a driving device such as a doll and the number of parts. There were also many.

The present invention has been made under the above circumstances,
It is an object of the present invention to provide a spherical motion mechanism using a spherical gear that can be easily miniaturized and has a small number of parts.

[0005]

That is, a spherical motion mechanism by a spherical gear of the present invention is a spherical gear having at least two tooth surfaces formed in arbitrary directions on the surface of a spherical member,
A first support member fixed to the gear and rotatably supporting the gear along one tooth surface direction with the center of curvature of the spherical surface as the fulcrum, and the fulcrum being attached to the support member. And a second support member that rotatably supports the first member along the other tooth flank direction, and the second support member that meshes with these tooth flanks, and the spherical surface along each tooth flank direction. Each of the drive gears for rotationally driving the gears, and the drive object disposed in the first member, by the rotational drive of a predetermined drive gear, with the center of curvature as a fulcrum,
It is configured to rotate the drive target.

[0006]

In the spherical motion mechanism of the spherical gear of the present invention, for example, the tooth surface formed in an arbitrary direction on the surface of the spherical member is used as the tooth surface for the x direction, and the other formed on the same surface. When the tooth flank of is the y-direction tooth flank, the spherical gear is rotated in the x-direction by rotating the x-direction driving gear that meshes with the x-direction tooth flank, and is attached to the first support member. While swinging the driven object in the x direction, y
By rotating the direction drive gear, the spherical gear
In the y direction, the driven object attached to the first support member is swung in the y direction. In these cases,
When the spherical gear rotates in the x direction, the y direction drive gear slides on the y direction tooth surface while maintaining the meshed state. When the spherical gear swings in the y direction, the x-direction drive gear slides on the x-direction tooth surface while maintaining the meshed state.
Then, when both the x-direction driving gear and the y-direction driving gear are rotated, the both driving gears slide while rotating on their respective tooth flanks while maintaining the meshed state.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings of an embodiment in which a driven object is a camera. In the figure, K is a camera body (hereinafter, referred to as “driving target K”), A is a chassis (hereinafter, referred to as “mediation material A”), and B is a chassis (hereinafter, referred to as “mediation material B”). is there.

The object K to be driven is pivotally attached to the intermediary member A so as to be swingable in the y direction (the pivot point is indicated by reference numeral 1y), and the intermediary member A is pivotable to the intermediary member B in the x direction. It is pivotally attached (the pivot attachment point is indicated by reference numeral 1x). The pivot points 1x and 1y are set at positions where the swing radius of the surface of a spherical gear described later is equal to the radius r of the sphere. The spherical gear 2 is fixed to the intermediary material B.

Reference numeral 2 is a spherical gear fixed to the intermediary material B. The spherical gear 2 is a gear having a spherical surface, and the tooth surface 3x for the x direction and the tooth surface 3y for the y direction are formed on the surface thereof.
And are formed.

Reference numeral 4x denotes an x-direction drive gear meshed with the x-direction tooth surface 3x, and reference numeral 4y denotes a y-direction drive gear meshed with the y-direction tooth surface 3y. Both drive gears 4x and 4y are rotationally driven by a motor (not shown).

With the above structure, the x-direction driving gear 4 is provided.
x is rotated to swing the driving object K attached to the spherical gear 2 through the spherical gear 2 and the intermediary members A and B in the x direction, and the y-direction drive gear 4y is rotated to form a spherical shape. The drive target K attached to the spherical gear 2 can be swung in the y direction via the gear and the intermediary members A and B.

In this embodiment, the spherical motion mechanism by the spherical gear having the driving tooth surfaces in two directions on the surface of the spherical member has been described, but the present invention is not limited to this.
Further, the spherical member may be provided with a plurality of tooth surfaces in mutually different directions and corresponding support mechanisms having the same central fulcrum, respectively, so that the driven object can be caused to perform complicated and delicate movements.

[0013]

As described above, according to the spherical motion mechanism of the spherical gear of the present invention, by using one spherical gear, the unidirectional drive gear is rotated to move the spherical gear in one direction. The object to be swung in one direction while rotating the driving gear in the other direction to rotate the spherical gear in the other direction to swing the object to be driven in the other direction. be able to. Therefore, according to the present invention, only one gear, which has conventionally required two gears, is required, and as a result, downsizing, rationalization, and cost reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of a spherical gear.

[Explanation of symbols]

 A mediator A B mediator B K object to be driven 1x pivot point of mediator A 1y pivot point of mediator 2 spherical gear 3x tooth face for x direction 3y tooth face for y direction 4x x direction drive gear 4y y-direction drive gear

Claims (1)

(57) [Claims] 1. A spherical gear having at least two tooth surfaces formed in an arbitrary direction on the surface of a spherical member, and fixed to the gear, along the one tooth surface direction with the center of curvature of the spherical surface as a fulcrum. A first supporting member that rotatably supports the gear, and a rotatably supported first member that is attached to the supporting member and that has a fulcrum that is the same as the fulcrum. A second supporting member, each drive gear that meshes with these tooth flanks, and drives the spherical gear to rotate along each tooth flank direction; and a drive target arranged on the first member A spherical motion mechanism using a spherical gear, characterized in that the driven object is rotated about the center of curvature as a fulcrum by rotational driving of a predetermined drive gear.