TW201433718A - Improved structure for linear sliding - Google Patents

Abstract

An improved structure for linear sliding is disclosed, comprising: a slide rail, a slider, two sets of ball recirculation device and a screw. By means of the slider and the track paths of the ball recirculation devices, the balls can be moved on a working path and recirculation paths. Accordingly, through the rotation of the screw, the ball recirculation devices configured at the slider are allowed to generate a sliding movement relative to the screw rotation direction, and the balls are subject to uniform force, thereby effectively increasing the load capacity, and reducing occurrences of damage to the parts.

Description

Linear sliding improved structure

The present invention relates to the field of linear transmission, and more particularly to a linear sliding improved structure that has a high load and can accurately drive the displacement of the slider.

According to the linear ball slide, it is an important power transmission component in the machinery industry. Its application range covers the fields of precision machinery, automation industry, medical equipment and aerospace industry. The main function of the linear ball slide is to use the ball as the contact medium of the two components to be relatively moved, so that the two members do not directly contact the entire surface, and reduce the frictional resistance generated when the member moves, so that the transmission mechanism moves. It is smoother and more labor-saving, which saves energy. At the same time, due to the reduction of friction, the wear and temperature between parts are greatly improved, which helps to improve the accuracy and service life of the transmission mechanism, and provides the transmission mechanism. Operate at a higher moving speed.

However, the conventional ball slide rail comprises a slide rail, a slider and a plurality of balls running between the slide rail and the slider, wherein the slider and the slide rail have a ball circulation structure for guiding the ball return flow, so that the ball can be circulated. It runs between the slider and the slide rail to reduce the frictional resistance of the slider relative to the slide rail movement. However, in terms of the common ball circulation structure, it can be roughly divided into a straight path and a guide. Two parts of the steering path of the ball steering, in which the steering path portion is unable to have a complete circular path due to the limitation of machining and material thickness, which causes the ball to run at the steering path, and the ball and the steering path are not smooth. Excessive frictional resistance between the two causes the ball to wear excessively and cause noise, and affects the overall performance and life of the linear ball slide.

In addition, the conventional ball sliders occupy a large amount of space for use, and are difficult to apply to today's high-precision industries. Their use cannot meet the requirements of high-precision operation and high load operation, and the thickness is high due to large volume. It is inconvenient to manufacture, can not save steel, and has high cost and other shortcomings.

In other words, how to make the ball slide can withstand high load and reduce the volume and manufacturing cost is an important topic for discussion in the industry.

In view of the shortcomings derived from the various shortcomings derived from the above-mentioned conventional ball slides, the inventors of the present invention have improved and innovated, and after years of painstaking research, finally successfully developed and improved the linear sliding improved structure of the piece.

It is an object of the present invention to provide a linear sliding improved structure which has a small size, a relatively low height, and a low manufacturing cost.

A second object of the present invention is to provide a linear sliding improved structure that is more precise in position and capable of fine-tuning displacement.

A linear sliding improved structure that achieves the above objects of the invention includes: a sliding rail having a rolling groove and a moving surface parallel to each other on both sides, and the upper end of the rolling groove has a guiding surface for guiding and eliminating ball interference; a slider having a screw hole at the center thereof is provided The screw is disposed therein, the slider is sleeved on the slide rail and reciprocates relative to the slide rail, and the plurality of joint ends are disposed on both sides of the slider, and the joint is connected to the joint end of the ball return device after being worn And adjusting the gap between the two, and the inner side of the bottom of the slider is provided with two rolling surfaces of the opposite rolling grooves, and the side wall of the slider is provided with a track path, which is equally divided into two surfaces by a center line, and The track path is formed by connecting two ends of a return path to the two ends of the working path, the two surfaces of the return path form two deep faces, and the two surfaces of the working path form a deep surface and a shallow surface. The working path is connected to the rolling surface of the slider; the two ball recirculating devices are disposed on both sides of the slider, and the two sides have the joint ends corresponding to the connecting ends of the sliders, and the sliders are respectively pressed by the connecting members, and the ball reflow device Also has The moving surface has the same shape as the sliding surface of the slider, and the ball reflow device has at least two return paths for connecting the rolling surfaces for circulating the balls, wherein the ball reflow device comprises a track path disposed at the return hole and a a ball that is mounted in the track path, the track path is equally divided into two surfaces by a center line, and the track path is formed by connecting the two ends of the return path to the two ends of the working path The two surfaces of the return path form two deep surfaces, and the two surfaces of the working path form a deep surface and a shallow surface and the working path is coupled to a rolling surface of the slider; a screw threaded through the screw hole of the slider and rotating relative to or opposite to the screw hole, thereby driving the slider and the ball reflow device to be displaced back and forth on the slide rail; Through the rotation of the screw, the slider and the ball reflow device are slid relative to the direction of rotation of the screw, and the balls are evenly stressed, thereby effectively increasing the load capacity and reducing the damage of the parts.

1‧‧‧rails

11‧‧‧ rolling groove

12‧‧‧ moving surface

13‧‧‧ Guide surface

2‧‧‧ Slider

21‧‧‧ rolling surface

22‧‧‧ Track Path

221‧‧‧Return path

222‧‧‧Working path

23‧‧‧ balls

24‧‧‧Perforation

25‧‧‧Link end

3‧‧‧Ball returning device

31‧‧‧ rolling surface

32‧‧‧Binding end

33‧‧‧ Tightening

34‧‧‧ screw holes

35‧‧‧Adjusting bolts

4‧‧‧ screw

5‧‧‧Connecting parts

1 is a perspective view of a linear sliding improved structure of the present invention.

2 is a perspective assembled view of the slide rail, the slider, and the ball reflow device.

3 is a cross-sectional view of FIG. 2; illustrating the arrangement relationship of the slide rail, the slider, and the ball reflow device.

4 is an exploded perspective view of the slider and the ball reflow device.

Figure 5 is an exploded perspective view of another perspective of Figure 4.

Figure 6 is a schematic view of the track path of the slider and the ball reflow device; illustrating the case when the ball rolls.

FIG. 7 is a schematic view showing a second preferred embodiment of the present invention; the ball reflow device adjusting screw is rotated through the screw hole to pressurize the pressing portion to adjust the gap between the ball reflow device and the slide rail.

Figure 8 is a perspective view of a third preferred embodiment of the present invention; illustrating that the present invention is applied in parallel when applied to high loads.

Referring to FIGS. 1 to 5, the linear sliding improved structure provided by the present invention mainly comprises: a slide rail 1, a slider 2, two sets of ball reflow devices 3, and a screw 4 assembly.

Referring to FIGS. 1~3, the slide rail 1 has an axially parallel rolling groove 11 and a moving surface 12 on both sides thereof, and the upper end of the rolling groove 11 has a guiding surface 13 for guiding and eliminating the interference of the balls 23; Further, the characteristics of the slide rail 1 are: the slide rail 1 is a long strip-shaped and symmetrical structure, and the left and right upper sides of the slider 2 are rolling grooves 11 for providing the rolling of the balls 23, and the left middle and right sides. In the middle, there is a moving surface 12 which is perpendicularly intersected into a V-shape on the two wall surfaces, and the intersection of the wall faces has a chamfer, so as to avoid stress concentration in contact with the pressing surface of the slider 2; the upper end of the rolling groove 11 has a guiding The face 13 allows the ball to smoothly enter the rolling groove 11, and at the same time, when the ball 23 enters the working path 222 and the rolling groove 11 from the return path 221, the guiding surface 13 can eliminate the interference generated by the balls 23.

Referring to FIGS. 2 to 4 , the slider 2 has a through hole 24 in the center thereof, and a screw 4 is disposed therein. The slider 2 is sleeved on the slide rail 1 and reciprocates relative to the slide rail 1 . 2, a plurality of connecting ends 25 are formed on both sides, and the connecting member is connected to the combined end 32 of the ball reflow device 3 to adjust the gap therebetween, and the bottom of the bottom portion of the slider 2 is provided with two rolling grooves 11 The surface of the slider 2 is further described as follows: the slider 2 is a left-right symmetrical structure, and a sidewall path 22 is formed on the sidewall thereof, and the track path 22 is The two ends of the return path 221 are respectively connected to the two ends of the working path 222, and the two surfaces of the return path 221 form two deep surfaces, and the track path 22 is equally divided into two surfaces. The two surfaces of the working path 222 form a deep surface and a shallow surface, and the working path 222 is coupled to the rolling surface 21 of the slider 2.

Referring to FIGS. 3 to 5, the ball reflow device 3 is disposed on both sides of the slider 2, and has a coupling end 32 corresponding to the connecting end 25 of the slider 2 on both sides thereof, and the slider 2 is pressed by the connecting member respectively, and the slider The ball reflow device 3 also has a rolling surface 31 which is identical in shape to the rolling surface 21 of the slider 2, and the ball reflow device 3 has at least two return paths 221 connecting the rolling surfaces 31 for circulating the balls 23, see Fig. 4. And FIG. 6, wherein the ball reflow device 3 includes a track path 22 disposed at the return hole and a ball 23 movably mounted in the track path 22, the track path 22 being equally divided by a center line The two paths are formed by two ends of a return path 221 respectively connected to the two ends of the working path 222. The two surfaces of the return path 221 form two deep faces, and the two working paths 222 The surface system forms a deep surface and a shallow surface, and the working path 222 is coupled to the rolling surface 21 of the slider 2; further description of the ball reflow device 3 is characterized in that the ball reflow device 3 has the same shape as the side surface of the slider 2, and the ball reflow device 3 by means of connectors Group 2 of the contact block holes, respectively, and further packing side and the slider 2 to adjust the gap of the two.

Referring to FIG. 1 , the screw 4 is inserted through the slider 2 . The perforation 24 is rotated relative to or opposite to the direction of the perforation 24, thereby driving the slider 2 and the ball reflow device 3 to be displaced back and forth on the slide rail 1; further illustrating the characteristics of the screw 4: when the screw 4 is mounted on the slider When the perforation 24 of the second hole is rotated clockwise or counterclockwise by the screw 4, the slider 2 and the ball recirculating device 3 are slid in the direction of rotation of the screw 4, wherein the screw 4 can be selected by a ball screw through the ball 23 and The backflow between the screws 4 drives the slider 2 and the ball reflow device 3 to move accurately.

As a result, the rotation of the screw 4 causes the slider 2 and the ball reflow device 3 to slide in the rotational direction of the screw 4, and the balls 23 are evenly biased, thereby effectively increasing the load capacity and reducing the damage of the components.

Therefore, the above is the main component of the linear sliding improved structure of the present invention and the assembly method thereof, and then the use characteristics thereof are as follows: Referring to FIG. 1 to 6, first, the slider 2 has a track path on the left and right sides respectively. 22, and the track path 22 disposed on both sides of the slide is opposite to the ball reflow device 3, the working path 222 causes the two sets of balls 23 to partially appear on the rolling surface 21 of the slider 2 and the rolling surface 31 of the ball reflow device 3. Then, through the connecting piece locking slider 2 and the ball reflow device 3, the two are fastened to each other, and the pressing force is slightly applied to adjust the gap between the slider 2 and the ball reflow device 3, thereby further improving the ball 23 The smoothness of the slider 2 and the ball reflow device 3. In this embodiment, the return path 221 is formed by an arc, and the working path 222 is composed of a straight line, and the return path 221 is two The ends are connected to both ends of the working path 222 by arcs. Therefore, the balls 23 on the working path 222 of the slider 2 and the ball reflow device 3 partially appear on the rolling surface 21 of the slider 2 and the rolling surface 31 of the ball reflow device 3, so that the balls 23 are driven by the rotation of the screw 4 Rolling and recirculating in the track path 22, so that the slider 2 is surely displaced on the slide rail 1; and the upper end of the rolling groove 11 of the slide rail 1 has a guiding surface 13 for the ball to smoothly enter the rolling groove 11 while the ball 23 When the return path 221 enters the working path 222 and the rolling groove 11, the guiding surface 13 can eliminate the interference generated by the balls 23. As a result, the rotation of the screw 4 causes the slider 2 and the ball reflow device 3 to slide in the rotational direction of the screw 4, and the balls 23 are evenly biased, thereby effectively increasing the load capacity and reducing the damage of the components.

Please refer to FIG. 7 , which is a second preferred embodiment of the present invention. Compared with the first preferred embodiment, the utility model also has a slide rail 1 , a slider 2 , two sets of ball reflow devices 3 and a screw 4 . The difference from the first preferred embodiment is that the ball reflow device 3 has a pressing portion 33 extending downwardly and coupled to the moving surface 12 of the slide rail 1, and the slider 2 is slid by the pressing portion 33. When the rail 1 moves, it does not fall off. Further, the pressing portion 33 is connected with a screw hole 34 and an adjusting bolt 35. By rotating the adjusting bolt 35, the pressing portion 33 is brought close to the moving surface 12 of the slide rail 1. The gap between the pressing portion 33 and the moving surface 12 is eliminated, the smoothness and accuracy of the ball reflow device 3 and the slider 2 are improved, and the complexity of the structure and the ease of assembly are simplified, thereby reducing the cost.

Please refer to FIG. 8 , which is a third preferred embodiment of the present invention. Compared with the first preferred embodiment, the utility model also has a slide rail 1 , a slider 2 , two sets of ball reflow devices 3 and a screw 4 . However, the difference from the first preferred embodiment is that when a high load is required, since the present invention is small in size and thin in height, the linear sliding improved structure is arranged in parallel in two groups, thereby receiving a high load, and the same When the ball 23 is rotationally driven by the screw 4, it can roll and recirculate in the track path 22, and the slider 2 can be surely displaced on the slide rail 1.

The linear sliding improved structure provided by the present invention has the following advantages when compared with other conventional techniques: having a small volume, a small height, and a low manufacturing cost.

The moving position is more precise and can be fine-tuned.

Break through the design of the existing linear sliding group.

The detailed description of the preferred embodiments of the present invention is intended to be limited to the scope of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

In summary, this case is not only innovative in terms of space type, but also can enhance the above-mentioned multiple functions compared with the customary items. It should fully meet the statutory invention patent requirements of novelty and progressiveness, and apply for it according to law. This invention patent application, in order to invent invention, to the sense of virtue.

1‧‧‧rails

2‧‧‧ Slider

3‧‧‧Ball returning device

4‧‧‧ screw

Claims (1)

A linear sliding improved structure includes: a sliding rail having a rolling groove and a moving surface parallel to each other on both sides, and a guiding surface for guiding and eliminating ball interference at the upper end of the rolling groove; a slider The center of the hole is inserted through a through hole, and a screw is disposed in the sliding rail. The slider is sleeved on the sliding rail and reciprocates relative to the sliding rail. The connecting rod is provided with a plurality of connecting ends on both sides of the sliding rod for the connecting member to be worn. The joint end of the ball reflow device combines and adjusts the gap between the two, and the inner side of the bottom of the slider is provided with two rolling surfaces of the opposite rolling groove, and the side wall of the slider is provided with a track path, which is a center line or the like. The two paths are formed by two ends of a return path respectively connected to the two ends of the working path, and the two surfaces of the return path form two deep surfaces, and the two surfaces of the working path form a The deep surface and the shallow surface are connected to the rolling surface of the slider; the two ball reflow devices are disposed on both sides of the slider, and the two sides have the joint ends corresponding to the connecting ends of the sliders, and are respectively pressed by the connecting members Block, and the ball reflow device also has a rolling surface and has the same shape as the sliding surface of the slider, the ball reflow device has at least two return paths connecting the rolling surfaces for circulating the balls, wherein the ball reflow device comprises a setting a track path of the return hole and a ball that is movably mounted in the track path, the track path is equally divided into two surfaces by a center line, and the track path is formed by two ends of a return path Connect the work path separately The two ends of the return path form two deep surfaces, and the two surfaces of the working path form a deep surface and a shallow surface and the working path is coupled to the rolling surface of the slider; The screw is inserted through the perforation of the slider and rotates relative to or in the same direction of the perforation, thereby driving the slider and the ball reflow device to be displaced back and forth on the slide rail.