JPS6135775Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field: The present invention relates to a guide rail for transportation that is used in combination with bearings to smoothly move objects that move mainly in a straight line.

Conventional technology: Recently, devices with linear motion mechanisms have built-in guide mechanisms in which sleeve-shaped ball bearings are fitted and slide along rails or shafts to reduce resistance during drive. This ensures smooth operation. The bearings for this shaft and slide are mainly sleeve-shaped, with multiple rows evenly distributed so that a large number of balls can circulate and move.Due to their structure, the shaft has a circular cross section. There is. Therefore, while it is convenient to have no directionality, it is difficult to position it in the radial direction, and no matter how much attachments are attached to determine the directionality, this is a cause of lack of smooth movement, which is inconvenient. It is. In order to determine the direction,
A so-called spline shaft, in which a plurality of grooves are cut along the axis around the shaft, is often used. However, since this type of material reduces the strength of the shaft, it is necessary to use a shaft with a larger diameter than necessary, which makes the bearing that much larger, which is not economical, and the shaft is difficult to machine. It has many drawbacks, such as being expensive.

Purpose of the invention: The purpose of this invention is to solve these conventional problems and propose a guide rail with an extremely simple structure that can be used for the purpose of moving equipment that operates in a straight line. be.

Structure of the invention: In order to achieve this purpose, the invention includes the following:
A guide rail that guides a moving body that moves linearly by fitting a linear bearing with a plurality of rotating rollers distributed evenly inside and each roller abutting a guide surface, and the cross section is the lower half of the opposing rail. The two sides of the hexagon are longer than the sides of the upper half of the hexagon.

Therefore, in the guide rail of the present invention, bearing rollers are arranged so that the top surface and the two downward facing left and right sides are equally divided into three parts and the rotating rollers come into contact with the guide rail. By guiding the body, or by placing the bearing astride the bearing so that the rotating rollers contact the two upward facing left and right sides, even a moving body equipped with this bearing can be guided in the same way, and the bending moment due to the load from above can be reduced. This is a guide rail with a high section modulus that has enough strength to withstand.

Embodiment: Hereinafter, the guide rail of the present invention will be described in detail with reference to the drawings of an embodiment.

Fig. 1 shows a case in which a moving body 10 is supported by a guide rail 1 so that it can move linearly, and this guide rail 1 is supported by attaching both ends to a fixed object such as an aircraft body. As shown in Fig. 3, the cross section is such that the upper half has equal sides, and the lower half has two opposing diagonally downward sides that are longer than each side of the upper half, and the center a and the ridge lines b and b. The dimension h' to the bottom surface is made larger than the dimension h from the line c passing through the line c to the top surface, and it is formed into a scalene hexagon with all the intersecting angles of each side being equal, When installing, fix with the scalene side facing downward as shown.

The movable body 10 guided and supported by this guide rail 1 can of course have any shape depending on the purpose of the equipment, operating function, etc. A linear roller bearing 20 is attached to each of 11 and 11, and as illustrated in FIGS. 2 and 3, this linear roller bearing 20 is
The upper surface 2 and downward side surfaces 3, 3 of the guide rail 1
The rollers 22 that are divided into three parts and built in each are brought into contact with each other, and while holding the guide rail 1, the rollers 22 are related to each other so as to be guided by the rail 1, and are fitted and supported. Ru. The bearing 20 is attached to the moving body 10 by inserting the bolt 15 into the mounting hole 23 provided in the housing 21.
It has become attached to.

According to the guide rail of the present invention, the cross section is scalene hexagonal, and each rotating roller of the linear bearing 20 guided with respect to the rail 1 as described above is one of each surface of the guide rail. 22
Since the guide surface of the rail 1 comes into contact with the guide surface of the rail 1 at the position divided into three equal parts and the rail is held, the guide is accurately guided without wobbling. By arranging the scalene side with the load acting direction, it is possible to divide the roller into equal parts without impairing the function of contacting and guiding the rotating roller, and without increasing the moment of inertia and causing distortion. The effect as a guide rail can be enhanced.

According to this guide rail, the same effect as described above can be obtained even if the rotating roller is guided by contacting the two upwardly inclined surfaces as a straddle type linear bearing.

Effects of the invention: As described above, according to the invention, the moving body can be moved accurately and smoothly through bearings that guide it with a simple structure, and the section modulus is high even under load. Because it can be used, it is difficult to cause distortion and has great durability, and therefore it becomes a rail that can be effectively guided without making the overall shape excessively large, and it can be obtained by drawing processing when manufacturing it. It can be said that it is a rational and highly practical product that can be provided at a low cost.

[Brief description of the drawings]

The drawings show one embodiment of the present invention,
Fig. 1 is a diagram showing an example of usage, Fig. 2 is a diagram showing the relationship between the linear bearing and the guide rail,
FIG. 3 is a - view of FIG. 2. DESCRIPTION OF SYMBOLS 1... Guide rail, 2... Top surface, 3... Downward side, 10... Moving body, 20... Linear roller bearing, 21... Housing, 22... Roller.

Claims (1)

[Scope of utility model registration request] A guide rail that guides a moving body that moves linearly by fitting a linear bearing with a plurality of rotating rollers distributed evenly inside and each roller abutting a guide surface, and the cross section is the lower half of the opposing rail. A guide rail for a linear motion carrier that is formed into a scalene hexagon with two sides longer than each side of the upper half.