JP2003166529A - Straight and curvilinear movement type bearing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bearing smoothly performing straight movements and various curvilinear movements of an object. <P>SOLUTION: Upon combining alternately various sizes of rolling bodies 2 and 3 by means of connecting metal fixtures 4, both edges of a rolling body 3 are passed through a groove which is arranged on an inner part of the bearing and also whose width includes the loci of central points of the rolling bodies 2 and 3 on its center line. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a bearing device for smoothly performing linear movement or curved movement of an object.

[0002]

2. Description of the Related Art Conventional linear movement or curved movement type bearings are known to have a structure in which rotating bodies of the same size are arranged on the orbit of the bearing by means of a bearing frame or chain type method. There is.

[0003]

However, according to the above-mentioned prior art, there is a problem that efficiency is not very good and it is difficult to form various shapes except for a spherical rotating body. It was Therefore, it is an object of the present invention to provide a bearing that can smoothly perform a linear movement of an object and various curved movements.

[0004]

In order to solve the above-mentioned problems, the invention of claim 1 arranges a large rotating body on which a load is applied and a small rotating body on which a load is not applied alternately on a rotating body orbit of a bearing. Efficient straight line is characterized by a structure in which both ends of the smaller rotating body pass through a groove with a width centered on the locus of the center points of the large and small rotating bodies It also enables curved movement type bearings.

According to a second aspect of the present invention, a large rotating body to which a load is applied and a small rotating body to which a load is not applied are alternately arranged on the orbit of the rotating body of the bearing and are provided on the inner surface of the bearing frame. Both ends of the smaller rotating body pass through a groove having a width having the locus of the center point of the body as the center line. And by constructing a structure in which a large rotating body and a small rotating body are alternately connected in a chain shape by means of a figure-eight metal fitting, a highly efficient and diversely shaped bearing is realized, which solves the above problems. To do.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention is shown in FIGS.
Shown in. This bearing is made up of four parts. No. 1 is a combination of the bearing of the rotating body of the bearing and the side surface of the bearing frame. The shape and size are free, but the width of the groove provided on the inner side surface of the bearing frame is slightly smaller than the diameter of the rotating body 3. The center line of the width of the groove largely coincides with the locus of the center points of the rotating bodies 2 and 3. Further, the bearing frame on the ground contact surface side has a sufficient distance so that the bearing frame does not collide with the ground contact surface.

2 is a large rotating body. Since there is a load on the object, there are two grooves with a material and size that can obtain sufficient strength, and an 8-shaped metal fitting can be attached. The depth and position of the groove are such that the metal fitting contacts with the metal fitting attached. The position and depth do not hit the ground, small rotating body, bearing frame, front and rear metal fittings.

[0008] No. 3 is a small rotating body with little load on the object. The length is as large as the depth of the groove provided on the inner side surface of the bearing frame rather than the large rotating body, and the large size is large enough that the bearing frame does not collide with the ground contact surface.

Numeral 4 is a metal fitting in the shape of a figure 8 for connecting 2 and 3, and the large hole is attached to 2 and the small hole is attached to 3.
And 3 are alternately connected in a chain and arranged on the bearing track. The gap between the rotors 2 and 3 is as small as possible and has a size and shape that allows the rotors 2 and 3 to freely rotate.

According to this embodiment, when the bearing is moved to the right with the load applied to the rotating body 2, the rotating body 2 to which the load of the object is applied rotates clockwise, and the load between them is not applied so much. The rotating body 3 rotates counterclockwise. Then, the rotating bodies 2 and 3 move clockwise on the rotation orbit of the bearing. FIG. 3 is a side perspective view showing an example of the embodiment.

According to each of the embodiments described above, the invention of claim 1 arranges the rotating bodies 2 and 3 alternately on the bearing bearing and the frame side surface 1, and when the rotating body 3 moves on the bearing track, Both ends of the rotating body 3 are provided inside the bearing bearing and the bearing frame side surface 1, and the rotating bodies 2 and 3 are provided.
It passes through a groove whose width is centered on the locus of the center point of. And the load of the object is not applied to the rotating body 3, but the rotating body 2 is
The load of the object is applied by the bearing and the ground contact surface. With such an embodiment, the rotating body 2 to which a load is applied can rotate and move with less resistance.

Next, according to the second embodiment of the present invention, the rotating bodies 2 and 3 are alternately arranged on the bearing bearing and the frame side surface 1 according to the embodiments described above, and the rotating body 3 is on the bearing track. When moving, the both ends of the rotating body 3 pass through a groove having a width whose center line is the locus of the center points of the rotating bodies 2 and 3 provided inside the bearing bearing and the bearing frame side surface 1. And the load of the object is not applied to the rotating body 3,
A load of an object is applied to the rotating body 2 by the bearing bearing and the ground contact surface. The rotating bodies 2 and 3 of the bearing, which is characterized by the embodiment described in claim 1, are connected to each other in a chain shape by the metal fitting 4 having an eight shape. According to the above-described embodiment, the rotating bodies 2 and 3 are prevented from moving on the bearing raceway or in the opposite direction due to the presence or absence of a load moving on the bearing raceway and the centrifugal force.
Can be minimized.

The embodiment shown in FIGS. 1 to 4 is of a linear movement type and the ground contact surface is limited to a plane, but the shape can be freely changed even with a curved movement or a shape with a protrusion such as a rail. In addition, the mounting position, shape and size of the connecting fitting 4 are
It can be changed freely as long as the function is not impaired.

[0014]

The present invention has the following effects due to the configuration described above. In the invention described in claim 1, when the object is moved, the large rotating body 2 to which the load of the object is applied and the small rotating body 3 to which the load is not applied are alternately arranged on the orbit of the rotating body of the bearing to rotate. Reduces resistance to body 2. Then, both ends of the smaller rotating body pass through the groove having the width having the center line of the loci of the center points of the large and small rotating bodies provided on the inner surface of the bearing frame. When the large moving body 2 and another large rotating body 2 move at different intervals, such as when the moving body 3 moves differently from linear movement to rotational movement or from curved movement to rotational movement, the small rotating body 3 moves at regular intervals. Therefore, the resistance due to the collision between the rotating bodies can be minimized.

The invention described in claim 2 is
By connecting the large rotating body 2 and the small rotating body 3 in a chain shape by means of a figure-eight metal fitting, in addition to the effect of the invention according to claim 1, the rotating body 2 is rotated by a centrifugal force or the like to rotate the bearing orbit. You can suppress the movement to deviate from the top. Since both ends of the rotating body 3 pass through the grooves on the inner surface of the bearing frame, loosening or shrinkage due to the connection of the metal fittings can be minimized. With the above effects, it is possible to realize a linear movement type and a curved movement type bearing that can move an object efficiently.

[Brief description of drawings]

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

FIG. 2 is a three-dimensional view of each part.

FIG. 3 is a side perspective view showing the rotation direction of the embodiment of the present invention.

FIG. 4 is a bottom perspective view showing an embodiment of the present invention and an assembled sectional view of rotating bodies 2 and 3.

FIG. 5 is a side perspective schematic view of another example embodiment.

[Explanation of symbols]

1 Bearing bearing and bearing frame side 2 Large rotating body with load 3 Small rotating body without load 4 figure eight metal fittings

Claims (2)

[Claims] 1. A large rotating body to which a load of an object is applied and a small rotating body to which no load is applied are alternately arranged on a rotating body orbit of a bearing, and the center points of the large and small rotating bodies provided on the inner side surface of the bearing frame. Linear and curved moving type bearings characterized by a structure in which both ends of the smaller rotating body pass through a groove with a width centered on the locus. 2. A locus of center points of large and small rotating bodies provided on an inner side surface of a bearing frame, in which large rotating bodies to which a load of an object is applied and small rotating bodies to which no load is applied are alternately arranged on a bearing rotating body orbit. Both ends of the smaller rotating body pass through the groove with the center line as the center line, and the large rotating body and the small rotating body are alternately connected in the shape of a chain with the shape of a figure eight. The linear and curved moving type bearing according to claim 1.