CN100427783C - Line rail ball connection belt - Google Patents

Abstract

The invention relates to a line rail ball connecting belt, which is mainly composed of a connecting part and a ring part, and is characterized in that: the connecting part is designed as a belt-shaped structure, and a large number of holes are arranged on it It can accommodate balls; while the ring part has a ring structure and wraps around the hole of the connecting part to surround the balls, and there are several radial slots on the ring part, and the ring part holds the balls , which can make the ball connecting belt have better holding performance for the balls when turning to bend, so that the balls are not easy to fall out of the ball connecting belt.

Description

Line rail ball connection belt

technical field

The wire rail ball connection belt of the present invention is used in the wire rail to hold the balls in the wire rail and prevent adjacent balls from colliding with each other. Falling track ball joints.

Background technique

The line rail is mainly used in the direction guidance of the moving mechanism, and because of its ball rolling characteristics, the resistance of the moving mechanism is reduced, so it can also greatly reduce the thrust of the driving moving mechanism, so that the moving mechanism has good functions Features; Generally speaking, line rails are often used in mechanisms such as machine tools, electronics, automation equipment, and semiconductor equipment.

In the line track, the rotation direction of two adjacent balls is the same, so the linear movement direction of the two adjacent balls at their contact point is opposite, so the contact between the two contacting balls at the contact point There will be obvious friction, which will increase the resistance of the line rail, and the sound of friction will make people feel unpleasant. In order to improve the friction problem between the balls and the balls in the line track, there are currently two main methods: one is to use a single spacer component, and the single spacer component is alternately placed between adjacent balls to improve Friction between balls and balls; however, this method is time-consuming and labor-intensive, and if the spacer component falls over, it will cause the return channel to be stuck.

The other is to use a chain-shaped connection retainer (such as USP5988883, Japanese Patent Publication No. H05-052217 or H05-231432) to keep the ball in it, but the current connection retainer, the method of holding the ball It is to install a spacer block whose shape matches the shape of the ball at the front and rear of the ball movement direction, and the ball is accommodated in the limited space of the two spacer blocks; Only the front and rear directions are maintained, and when the link cage is bent, the two spacers at the front and back of the ball will change from a parallel and symmetrical state to form an angle with each other, so the space between the adjacent spacers that accommodate the balls will be limited. The opening is small and the opening is large on the other side, and the greater the bending range of the link retainer, the greater the gap between the upper and lower openings of the ball; , then the ball is easy to fall off between the two spacers.

Therefore, it is necessary to improve the ball retaining device in the prior art line guide.

Contents of the invention

The line track consists of two main components, a slide rail and a slider, and ball rolling is arranged between the two, so that the slide rail and the slider can move relatively. The line rail ball connecting belt of the present invention is a ball retaining structure applied to the line rail. The line rail ball connecting belt is an integrally formed structure, so that it can be more continuously and smoothly maintained in the entire path of the ball circulation. And guide the ball movement.

The present invention designs the integrally formed structure of the line track ball connecting belt into a simple configuration, and its main structure is divided into two parts: a connecting part and a plurality of ring parts. The main feature of the design of the connecting part is a belt-shaped structure, on which there are many holes, which are arranged linearly along the belt body and can accommodate balls in it; Surround the ball around the hole in the upper part, and hold the ball with this ring structure. Due to the design of the ring structure, there is a holding structure around the hole, so the ball connecting belt has a good hold on the ball when it turns and bends. performance, so that the ball is not easy to fall out of the hole of the ball connecting belt.

Secondly, the ring part of the ball connecting belt of the present invention surrounds the balls in an annular shape. Because the balls need to cooperate with the line rails to roll, the upper and lower parts of the balls in the ball connecting belt need to have exposed areas respectively. The included angle of the exposed area of the ball is designed to be between 60° and 120°, which makes it easier to demould the ball connecting belt during manufacture, and makes it easy for the ball to be placed in the ball connecting belt and maintains good performance of the ball.

Furthermore, in order to provide better elastic function of the ring part of the line rail ball connecting belt, the present invention is provided with several radial slots on the ring part. This design makes the grooves separate the ring part into several The ring sleeve makes the structure of the ring part easy to demould and it is easy to put the ball into the ball connecting belt during assembly. In order to strengthen the elastic function of the ring part, the number of slots in the ring part can be designed to be more than four .

Next, the hole on the connection portion of the ball connection belt of the present invention can be designed as a circular hole due to the outline of the ball, and the ring portion on it can be designed as a ring to surround the ball. Furthermore, the inner edge configuration of the ring structure is designed to be formed along the outline of the ball.

In addition, the structures of the adjacent ring portions of the line track ball connecting belt of the present invention can be designed to be connected to each other, or can be designed to be separated from each other. A flat surface can be cut on the collar part, so that the balls surrounded by the collar part are exposed and the thickness of the collar piece is uniform, and the structure of the collar part in this area is not easy to interfere with the track or the rolling groove of the slider.

In order to facilitate a further understanding of the features and technical content of the present invention, please refer to the following embodiments of the present invention in detail. However, the embodiments and drawings are for illustration and reference purposes only, and are not intended to limit the present invention.

Description of drawings

Fig. 1 is the upper view of the ball connecting belt of the present invention;

Fig. 2 is the A-A sectional schematic diagram of Fig. 1;

Fig. 3 is a top view of another embodiment of the ball connection belt of the present invention;

Fig. 4 is the B-B sectional schematic diagram of Fig. 3;

Fig. 5 is a top view of the third embodiment of the ball connection belt of the present invention;

Fig. 6 is a schematic cross-sectional view of Fig. 5C-C.

Detailed ways

Fig. 1 is a top view of the ball connecting belt of the present invention; Fig. 2 is a schematic cross-sectional view of A-A of Fig. 1; wherein the structure of the ball connecting belt 10 mainly includes a strip-shaped connecting portion 11 and an annular ring sleeve portion 12, and most balls 20 is placed in the round hole 111 arranged in a straight line along the belt body at the connecting part 11 of the ball connecting belt 10, and a ring-shaped ring part 12 is arranged around the round hole 111, and the ring part 12 surrounds the round hole at 360° 111, the exposed included angle between the upper inner edge of the collar part 12 and the center of the ball 20 is θ1, and the exposed included angle between the inner edge of the lower part of the collar part 12 and the center of the ball 20 is θ2, taking the collar part 12 The ring structure holds the balls 20. If the exposed included angles θ1 and θ2 are too large, the ball 20 will easily break away from the circular hole 111; and if the exposed included angle θ1 and θ2 are too small, the ball 20 will be difficult to insert into the circular hole 111, and the ball connecting belt will also Difficult to demould, the ideal range of exposed angles θ1 and θ2 can be set between 60°～120°, so as to achieve the easy demoulding of the ball connecting belt, the ball 20 is not easy to fall out of the round hole 111, and the ball 20 is easy to insert into the round hole. Multiple advantages in hole 111. Several radial slots 13 are provided on the collar part 12, and in this embodiment, eight slots 13 are arranged on one side of each, and the collar part 12 on this side is divided into eight collar pieces 121 , so that the structure of the ring part 12 is easy to demould and it is easy to put the ball 20 into the ball connecting belt 10 during assembly; in order to achieve the elastic function of the ring part, the number of slots in the ring part is designed to be more than four. . In this embodiment, the adjacent collar parts 12 are structurally designed to be connected to each other, as shown in Fig. 2, where the adjacent collar pieces 121 above and below the connecting part 11 are connected to each other as a whole, which can save space between adjacent collar parts 12. The distance between them makes the number of circular holes 111 and the collar portion 12 of the same length ball connection belt 10 can be more, and more balls 20 can be inserted.

Fig. 3 is a top view of another embodiment of the ball connecting belt of the present invention; Fig. 4 is a schematic cross-sectional view of Fig. It has a round hole 111, and a ring-shaped collar part 12 is also provided around the round hole 111. The ball 20 is held by the ring-shaped structure of the collar part 12, and several radial grooves are provided on the collar part 12. 13, the collar portion 12 is divided into several collar pieces 121 . The difference between this embodiment and the previous embodiment is that the adjacent collar parts 12 are designed to be separated from each other, as shown in Figure 4. The adjacent collar pieces 121 above and below the connecting part 11 are separated from each other into independent structures. In addition to saving space, it can also increase the overall bending performance of the ball connecting belt 10 . Furthermore, in this embodiment, a flat surface 122 is cut on the collar portion 12, so that the balls 20 surrounded by the collar portion 12 are exposed, and the thickness of the collar piece 121 is made uniform, so that the collar portion 12 in this area is not easy to contact with The rails or the rolling grooves of the slider interfere with each other; of course, the structural design of the plane 122 in this embodiment can also be used in the first embodiment.

Fig. 5 is the upper view of the third embodiment of the ball connecting belt of the present invention; Fig. 6 is a schematic cross-sectional view of C-C of Fig. 5; The distance between the round holes 111 on the part 11 is relatively large, and a ring-shaped ring structure 12 is also provided around the round holes 111, and the ball 20 is held by the ring-shaped structure of the ring ring portion 12, and the ring ring portion 12 Several radial slots 13 are provided to divide the collar part 12 into several collar pieces 121 , and a plane 122 is cut on the collar part 12 . The feature of this embodiment is that the distance between adjacent circular holes 111 is relatively large, so that adjacent ring portions 12 do not touch each other, but are separated by a certain distance, so the ball connecting belt 10 of this embodiment can achieve better performance. bending performance.

Claims (9)

1, a kind of linear rail ball connecting belt, it can be inserted wherein for most balls, it is characterized in that this structure mainly comprises:

Joint is a banded structure, which is provided with most along the belt body linear array and hole that can ccontaining described ball;

Ring sleeve portion, ring-type is convexly equipped with around the hole of above-mentioned joint, and its inner rim is that profile along described ball forms and surrounds described ball, and is provided with several with respect to the radial fluting of ball on each ring sleeve portion.

2, linear rail ball connecting belt as claimed in claim 1, fluting wherein is separated into several ring set sheets with ring sleeve portion.

3, linear rail ball connecting belt as claimed in claim 1 or 2, the wherein adjacent ring sleeve portion structure knot that is connected with each other.

4, linear rail ball connecting belt as claimed in claim 1 or 2, wherein adjacent ring sleeve portion structure is separated each other.

5, linear rail ball connecting belt as claimed in claim 1 or 2, ring sleeve portion wherein is provided with a plane.

6, linear rail ball connecting belt as claimed in claim 1 or 2, wherein the ball exposed region angle that is surrounded by ring sleeve portion is 60 °～120 °.

7, linear rail ball connecting belt as claimed in claim 1 or 2, wherein the hole of joint is a circular hole.

8, linear rail ball connecting belt as claimed in claim 1 or 2, wherein ring sleeve portion is that an annulus surrounds described ball.

9, linear rail ball connecting belt as claimed in claim 1 or 2, wherein the fluting number of ring sleeve portion reaches more than four.

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