TWI690661B - Backflow channel structure of linear slide rail - Google Patents

Abstract

A return channel structure of a linear slide rail includes: a slide rail, a slider, at least two return tubes and two end caps, wherein a slide groove is provided in the center of the bottom of the slider, and the slider passes through the slide The groove is spanned on the slide rail, at least one slide rail is provided between the slide groove and both sides of the slide rail, and a plurality of balls are slid in the slide rail. The sliders are all provided with linear return channels that match the number of slideways on the same side, and at the same time pass through the front and rear surfaces of the slider, and the inner tube of the return tube protrudes with several spiral patterns The spiral pattern is set with an odd number that cannot be divided, so that the balls can be driven by the spiral pattern when passing through the return pipe to produce a lateral flip at a specific angle.

Description

Backflow channel structure of linear slide rail

The invention relates to a "return channel structure of a linear slide rail", in particular to a return channel structure of a linear slide rail which has a long service life and can prevent the generation of noise or abnormal sound.

The linear slide rail is mainly used for linear reciprocating motion, which can achieve high-precision linear motion under high load. The function of the linear slide rail is to support and guide the moving parts (bed), so that the moving parts can Reciprocating linear displacement according to the predetermined direction, and because the friction method of the linear slide rail is rolling friction, not only the friction coefficient can be reduced to about 1/50 of the original sliding guide, but also the gap between the dynamic friction force and the static friction force can become smaller.

The existing linear slide rail mainly includes a slide rail and a slide block, wherein a slide groove is provided at the center of the bottom of the slide block, and the slide block is spanned on the slide rail through the slide groove. A ball slideway and a return path for the circulation of the balls, so that the friction between the slider and the slide rail is minimized by the rolling of the balls.

However, the above-mentioned conventional structure still has the following problems in practical applications: (1) When the linear slide rail is in operation, the balls will only follow the running direction of the moving parts one by one Push forward, and cannot be turned sideways during the reflow process due to the influence of the return channel, so that the load of the balls will be concentrated at the same point, thereby shortening their service life; (2) The outer diameter of the turning point of the return channel is larger than that of the ball. When the ball reflows, there is a gap between the return channel and the ball that is sufficient to cause the ball to be misaligned to the left and right, resulting in an eccentric ball diameter. , And the eccentricity will turn into an irregular operation when the balls are pushed forward, causing the balls to produce different speeds, and then emit disturbing noise.

Therefore, in view of this, the inventor thought of the idea of creation, and then designed it with many years of experience. After many discussions and trial samples, and several revisions and improvements, the present invention was launched.

It is known that the linear slide rail cannot be used for a long time, and it will make a disturbing noise when the balls return, which is the technical problem to be solved.

The return channel structure of the linear slide rail of the present invention includes: a slide rail, a slider, at least two return pipes and two end caps, wherein a slide groove is provided in the center of the bottom of the slider, and the slider passes through The sliding groove is spanned on the sliding rail, at least one sliding path is provided between the sliding groove and both sides of the sliding rail, and a plurality of balls are slid in the sliding path to allow the slider to pass The balls move back and forth on the slide rail, and the outer side of each slide is provided on the slider with a quantity matching the slide on the same side, and at the same time penetrates the Linear return of the front end surface and rear end surface of the slider In the flow channel, the inner tube of the return pipe protrudes with several spiral patterns. The spiral pattern is set with an odd number that cannot be divided, so that the ball can be driven by the spiral pattern when passing through the return tube to produce a specific The angle is turned sideways, and the return pipe is inserted in the return channel, and the two end caps are respectively assembled on the front end surface and the rear end surface of the slider, so that the inner side surface is provided with a turning shape. The connection of the groove is turned on, so that the above-mentioned plurality of balls can make a recirculation and rolling between the slideway and the return pipe; thereby, it can constitute the return passage structure of the linear slide rail.

In the structure of the return path of the linear slide rail of the present invention, when the ball is running in the no-load state of the return pipe, the ball will be driven by the spiral pattern and guided to produce a lateral flip at a specific angle , When the ball returns to the slideway and bears the load, it will no longer be stressed at a specific part, so as to prevent the ball from being deformed from the place where it is often stressed, so as to effectively extend the service life of the linear slide , And the design using the spiral pattern is an odd number that cannot be divided, can prevent the ball from being turned sideways and then turned back to the original position, or with a specific upper and lower two points or up and down , The left and right four points are subjected to repeated force in a sequential cycle, and when the balls are transferred from the rotary groove with a larger outer diameter into the return pipe, the natural spiral will be caused during the pushing of the balls The rules form concentricity, so that the balls can run regularly at the same rate to avoid disturbing noises or abnormal sounds.

Part of the invention:

(10)‧‧‧slide

(20)‧‧‧slider

(21)‧‧‧Chute

(22) ‧‧‧ return channel

(30)‧‧‧Return tube

(31)‧‧‧Helix

(40)‧‧‧End cover

(41)‧‧‧Slot

(50)‧‧‧ball

(51)‧‧‧slide

(60)‧‧‧Scraper

(70)‧‧‧Upper retainer

The first picture is a three-dimensional assembly diagram of the invention.

The second figure is a perspective exploded view of the present invention.

The third figure is a combined plan view of the present invention.

Fourth figure: A-A sectional view of the third figure of the present invention.

Fifth figure: It is the B-B sectional view of the third figure of the present invention.

Sixth figure: It is a sectional view of the fifth figure of the present invention.

The seventh figure is a cross-sectional view of the first preferred embodiment of the return pipe of the present invention.

Figure 8 is a cross-sectional view of the second preferred embodiment of the return tube of the present invention.

The ninth figure is a cross-sectional view of the third preferred embodiment of the return pipe of the present invention.

Tenth figure: It is a schematic diagram showing the action of the ball of the present invention (shown only as a single piece) being turned sideways by the spiral pattern in the return pipe.

In order to enable your reviewing committee to have a better understanding and understanding of the purpose, features and effects of the present invention, the following is please cooperate with [the brief description of the drawings] to be detailed as follows: usually according to the present invention, please first from the first picture to the first Viewed from the six figures, it includes: a slide rail (10), a slider (20), at least two return tubes (30) and two end caps (40), wherein the bottom of the slider (20) is provided at the center There is a chute (21), the slider (20) is spanned on the slide rail (10) through the chute (21), the two of the chute (21) and the slide rail (10) Each side is provided with at least one slideway (51), and a plurality of balls (50) are slided in the slideway (51), so that the slider (20) can pass through the balls (50) The slide rail (10) is moved back and forth back and forth, and the outer side of each slide rail (51) is on the slider (20) The upper sides are provided with linear return channels (22) and return tubes (30) which are matched in number with the slideways (51) on the same side, and at the same time penetrate the front and rear surfaces of the slider (20) The inner tube portion of the is protruded with a number of spiral patterns (31), the spiral pattern (31) is set with an odd number that cannot be divided, so that the ball (50) can be affected when passing through the return tube (30) The spiral pattern (31) is driven to produce a lateral flip at a specific angle, and the return pipe (30) is threaded in the return channel (22), and the two end caps (40) are respectively assembled in the slide The front end surface and the rear end surface of the block (20) are connected through the turning groove (41) with a turning shape on the inner side surface, so that the plurality of balls (50) can be connected to the slideway (51) and the return pipe (30) Do the recirculation cycle rolling.

The invention provides a return path structure of a linear slide rail, wherein two slide paths (51) are provided between the slide groove (21) and the slide rail (10) on both sides, so that the return path (22), The return pipe (30) and the revolving groove (41) can be arranged with the same number relative to the two slideways (51) on each side.

The invention provides a return channel structure of a linear slide rail, wherein the return tube (30) is a wear-resistant plastic tube.

The present invention provides a return path structure of a linear slide rail, wherein three spiral patterns (31) are provided in the inner tube portion of the return tube (30) (please view from the first to seventh figures at the same time) Of it).

The present invention provides a return path structure of a linear slide rail, wherein the inner tube portion of the return tube (30) is provided with five spiral patterns (31) (please also observe from the eighth figure).

The invention provides a return channel structure of a linear slide rail, wherein the inner tube part of the return tube (30) is provided with seven spiral patterns (31) (please also observe from the ninth figure).

The invention provides a return path structure of a linear slide rail, wherein a scraper (60) is further combined with each outside of the two end caps (40).

The invention provides a return path structure of a linear slide rail, wherein an upper holder (70) is further provided between the slide rail (10) and the slider (20).

With the above structure, when the ball (50) is running in the no-load state of the return pipe (30), the ball (50) will be driven and guided by the spiral pattern (31) to generate actively Turning sideways at a specific angle (please also observe from the tenth figure), when the ball (50) returns to the slideway (51) and bears the load, it will no longer use a specific part (single point) Always stress, so as to avoid deformation of the ball (50) from frequent stress, in order to effectively extend the service life of the linear slide, and the use of the spiral pattern (31) is an odd number that cannot be divided The set design can prevent the ball (50) from turning sideways and then turning back to the original position, or repeating the sequential cycle with the specific upper and lower two points or the upper, lower, left and right points. Force, and when the ball (50) is transferred from the rotary groove (41) with a larger outer diameter into the return pipe (30), the natural spiral rule will be applied during the pushing of the ball (50) Concentricity is formed, so that the balls (50) can run regularly at the same rate, so as to avoid disturbing noises or abnormal sounds.

The above is only one of the preferred embodiments of the present invention, and it should not be used to limit the scope of implementation of the present invention; that is, all equal changes and modifications made in accordance with the scope of the patent application of the present invention should still belong to this creation Within the scope of the patent.

(10)‧‧‧slide

(20)‧‧‧slider

(21)‧‧‧Chute

(22) ‧‧‧ return channel

(30)‧‧‧Return tube

(31)‧‧‧Helix

(40)‧‧‧End cover

(41)‧‧‧Slot

(50)‧‧‧ball

(51)‧‧‧slide

(60)‧‧‧Scraper

(70)‧‧‧Upper retainer

Claims (8)

A return channel structure of a linear slide rail, which includes: a slide rail, a slider, at least two return tubes and two end caps, wherein: a slide groove is provided in the center of the bottom of the slider, and the slider passes through the slide The groove is spanned on the slide rail, at least one slide rail is provided between the slide groove and both sides of the slide rail, and a plurality of balls are slid in the slide rail to allow the slider to pass through the The balls move back and forth on the slide rail, and the outer side of each slide is provided on the slider with a quantity matching the slide on the same side, and at the same time penetrates the slide Straight recirculation channels on the front and rear surfaces; the inner tube of the recirculation tube protrudes with several spiral patterns, which are set with an odd number that cannot be divided, so that the balls can be passed through the return tube The spiral pattern is driven to produce a lateral flip at a specific angle, and the return pipe is threaded in the return channel; the two end caps are respectively set on the front end surface and the rear end surface of the slider, so as to use it The inner side is provided with a connection of a turning groove in a turning shape, so that the above-mentioned plurality of balls can be recirculated and rolled between the slideway and the return pipe. The return channel structure of the linear slide rail according to claim 1, wherein two slide rails are provided between the slide channel and the two sides of the slide rail, so that the return channel, the return tube and the rotary groove can be opposite to this Make the same number of settings for the two slides on each side. The return channel structure of the linear slide rail according to claim 1, wherein the return tube is a wear-resistant plastic tube. The return path structure of the linear slide rail according to claim 1, wherein the inner part of the return pipe Three spiral patterns are provided in the tube portion. The return channel structure of the linear slide rail according to claim 1, wherein five spiral patterns are provided in the inner tube part of the return tube. The return channel structure of the linear slide rail according to claim 1, wherein the inner tube portion of the return tube is provided with seven spiral patterns. The return channel structure of the linear slide rail according to claim 1, wherein a scraper is further combined with each of the outer sides of the two end caps. The return channel structure of the linear slide rail according to claim 1, wherein an upper retainer is further provided between the slide rail and the slider.

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