CN210178758U

CN210178758U - Return channel structure of linear slide rail

Info

Publication number: CN210178758U
Application number: CN201920560626.6U
Authority: CN
Inventors: 林威廷
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-03-24
Anticipated expiration: 2029-04-23

Abstract

The utility model provides a backward flow way structure of linear slide rail, it contains: a slide rail, a slider, two at least back flows and two end covers, wherein, slider bottom central authorities are equipped with a spout, the slider is passed through the spout is striden and is established on the slide rail, the spout respectively is equipped with at least one slide with the both sides of slide rail, and the slide is middle to slide and is equipped with a plurality of balls, and each slide outside all is equipped with in quantity and is assorted quantity with the slide of homonymy on the slider, and runs through simultaneously the linear backward flow way of terminal surface and rear end face before the slider, the protrusion of the interior tube part of back flow has a plurality of spiral lines, and this spiral line is with the odd number quantity that can't be got rid of and is made the setting, lets the ball can be in when passing through the back flow by the spiral line drives and produces the side direction upset.

Description

Return channel structure of linear slide rail

Technical Field

The present invention relates to a return channel structure of a linear slide rail, and more particularly, to a return channel structure of a linear slide rail having a long service life and capable of preventing noise or abnormal sound.

Background

The linear slide rail is mainly used in the linear reciprocating motion occasions, can realize the linear motion with high precision under the condition of high load, and has the functions of supporting and guiding a moving part (a bed) to enable the moving part to make reciprocating linear displacement according to a preset direction, and because the friction mode of the linear slide rail is rolling friction, the friction coefficient can be reduced to about 1/50 of the original sliding guide, and the difference between the dynamic friction force and the static friction force is smaller.

The existing linear sliding rail mainly comprises a sliding rail and a sliding block, wherein a sliding groove is arranged in the center of the bottom of the sliding block, the sliding block is arranged on the sliding rail in a crossing mode through the sliding groove, a plurality of ball sliding ways and return channels which can allow balls to circularly run are arranged between the sliding groove and the sliding rail, and therefore friction force between the sliding block and the sliding rail is reduced to the minimum through rolling of the balls.

However, the conventional structure as described above still has the following problems in practical applications: when the linear sliding rail works, the balls only push and advance one by one along the running direction of the moving part, and cannot turn over laterally under the influence of a return channel in the backflow process, so that the loads of the balls are concentrated at the same point, and the service life of the linear sliding rail is further shortened; (II) when the outer diameter of the turning part of the return channel is larger than that of the ball, a gap which is enough for the ball to generate mutual left-right dislocation and leads to the eccentricity of the ball diameter of the ball is formed between the return channel and the ball when the ball flows back, and the eccentricity can be converted into irregular operation when the ball pushes forwards, so that the ball generates different speeds, and further, disturbing noise is generated.

Therefore, the inventor of the present invention considers and creates the idea, and then designs the method with years of experience, and develops the present invention through various studies and trial tests of samples, and multiple correction and improvement.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a current linear slideway can't be by durable use, and can send disturbing noise during ball backward flow, this technical problem who wants to solve.

(II) technical scheme

The utility model provides a backward flow way structure of linear slide rail, it contains: a slide rail, a slide block, at least two return pipes and two end covers, wherein, a slide groove is arranged at the center of the bottom of the slide block, the slide block is spanned on the slide rail through the slide groove, at least one slide way is respectively arranged between the slide groove and the two sides of the slide rail, a plurality of balls are arranged in the slide way in a sliding way, the slide block can make reciprocating displacement on the slide rail through the balls, the outer side of each slide way is provided with a linear return passage which is matched with the slide ways on the same side in number on the slide block, and simultaneously penetrates through the front end surface and the rear end surface of the slide block, a plurality of spiral lines are arranged on the inner pipe part of the return pipe in a protruding way, the spiral lines are arranged in odd number which can not be eliminated, the balls can be driven by the spiral lines to generate lateral overturn with a specific angle when passing through the return pipe, and the return pipe is arranged in the, the two end covers are respectively arranged on the front end surface and the rear end surface of the sliding block in a group mode, so that the inner side surface of the end covers is provided with a turning rotary groove in a connection and conduction mode, and the plurality of balls can perform backflow circulation rolling between the slide way and the backflow pipe; therefore, the return channel structure of the linear slide rail can be formed.

(III) advantageous effects

According to the above technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses a return channel structure of linear sliding rail, when the ball is in the no-load state of operation in the return pipe, the ball will receive the side direction upset of specific angle of spiral line's drive, guide initiative production, let the ball flow back to the slide and bear the load, can not always be with specific position atress again, in order to avoid the ball from often taking place the deformation in the department of atress, in order effectively to prolong the life of linear sliding rail, and utilize the spiral line to make the design of setting up with the odd number that can't be divided completely, can prevent the ball from turning back to the normal position after the side direction upset again, or with specific upper and lower two points or upper and lower, left and right four points do the repeated atress that circulates in proper order, when again the ball turns over from the rotary groove that the external diameter is great to in the return pipe, can be in the extrusion process of ball because of natural spiral forms the rule with one heart, the balls can run regularly at the same speed to avoid disturbing noises or abnormal sounds.

Drawings

Fig. 1 is a perspective combination view of the present invention.

Fig. 2 is an exploded perspective view of the present invention.

Fig. 3 is a combined plan view of the present invention.

Fig. 4 is a sectional view taken along line a-a of fig. 3.

Fig. 5 is a sectional view taken along line B-B of fig. 3.

Fig. 6 is a cross-sectional view of fig. 5.

Figure 7 is a cross-sectional view of a first preferred embodiment of the return tube of the present invention.

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

Figure 9 is a cross-sectional view of a third preferred embodiment of the return tube of the present invention.

Fig. 10 is a schematic diagram of the rolling balls (only one shown) of the present invention being driven by the spiral thread to generate the lateral turning action in the return pipe.

[ notation ] to show

Slide rail- - - - - (10)

Sliding block (20) sliding groove (21)

Return channel- - - - (22)

Return pipe (30) spiral line (31)

End cap- - - - - - - (40) rotary groove- - - - - (41)

Ball bearing slide-50-51

Scraper- - - - - (60)

Upper holder- - - (70)

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the drawings or description, the same drawing reference numerals are used for similar or identical parts. Implementations not depicted or described in the drawings are of a form known to those of ordinary skill in the art. Additionally, while exemplifications of parameters including particular values may be provided herein, it is to be understood that the parameters need not be exactly equal to the respective values, but may be approximated to the respective values within acceptable error margins or design constraints. Directional phrases used in the embodiments, such as "upper," "lower," "front," "rear," "left," "right," and the like, refer only to the orientation of the figure. Therefore, the directional terminology used is intended to be in the nature of words of description rather than of limitation.

To further clarify the objects, features and advantages of the present invention, a full appreciation of the invention can be gained by taking the following detailed description in conjunction with the accompanying drawings in which:

according to the present invention, as shown in fig. 1 to 6, it includes: a slide rail (10), a slide block (20), at least two return pipes (30) and two end covers (40), wherein a sliding groove (21) is arranged at the center of the bottom of the slide block (20), the slide block (20) is arranged on the slide rail (10) in a crossing manner through the sliding groove (21), at least one slide way (51) is respectively arranged between the two sides of the sliding groove (21) and the slide rail (10), a plurality of balls (50) are arranged in the slide way (51) in a sliding manner, so that the slide block (20) can make reciprocating displacement on the slide rail (10) through the balls (50), each slide way (51) is provided with linear return channels (22) which are matched with the slide ways (51) on the same side in number and penetrate through the front end face and the rear end face of the slide block (20) at the same time, and a plurality of spiral threads (31) protrude from the inner pipe part of the return pipe (30), the spiral veins (31) are arranged in odd number which can not be removed completely, so that the balls (50) can be driven by the spiral veins (31) to generate lateral overturning with a specific angle when passing through the return pipe (30), the return pipe (30) is arranged in the return channel (22) in a penetrating way, two end covers (40) are respectively arranged on the front end surface and the rear end surface of the sliding block (20) in a group way, and the connection and conduction of a rotary groove (41) which is arranged on the inner side surface of the rotary groove in a turning shape are utilized, so that the balls (50) can perform return circulation rolling between the sliding way (51) and the return pipe (30).

The utility model provides a return channel structure of linear slide rail, wherein, respectively be equipped with two slides (51) between the both sides of spout (21) and slide rail (10), let return channel (22), back flow (30) and rotary tank (41) can do the setting of the same quantity for two slides (51) of this each side.

The utility model provides a return flow structure of linear slide rail, wherein, back flow (30) are wear-resisting plastic pipe.

The utility model provides a return duct structure of linear slide rail, wherein, be equipped with three in the inner tubular part of back flow (30) spiral line (31) (please refer to fig. 1 to fig. 7 and show).

The utility model provides a return duct structure of linear slide rail, wherein, be equipped with five in the inner tube portion of back flow (30) spiral line (31) (please refer to fig. 8 and show).

The utility model provides a return duct structure of linear slide rail, wherein, be equipped with seven in the inner tube portion of back flow (30) spiral line (31) (please refer to fig. 9 and show).

The utility model provides a return channel structure of linear slide rail, wherein, respectively reunite a scraper blade (60) in two end cover (40) outsides.

The utility model provides a return channel structure of linear slide rail, wherein, be equipped with one between slide rail (10) and slider (20) in addition and go up and keep ware (70).

With the above structure, when the ball (50) is in the unloaded state of the return pipe (30), the ball (50) is driven by the spiral thread (31), guided and actively generates the lateral overturn of a specific angle (please refer to fig. 10), so that when the ball (50) reflows to the slideway (51) and bears the load, the ball is not always stressed by a specific part (single point) to avoid the ball (50) from being deformed from a frequently stressed position, thereby effectively prolonging the service life of the linear slide rail, and by the design that the spiral thread (31) is provided with an odd number which cannot be completely divided, the ball (50) can be prevented from being flipped laterally and then rotated back to the original position, or the specific upper and lower points or the upper, lower, left and right points are subjected to repeated stress which circulates in sequence, and when the ball (50) is rotated into the return pipe (30) from the rotary groove (41) with a larger outer diameter, the balls (50) are concentric due to the natural helix rule during the pushing process of the balls (50), so that the balls (50) can run at the same speed rule to avoid the generation of disturbing noise or abnormal sound.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby; all equivalent changes and modifications made within the scope of the present invention shall fall within the protection scope of the present invention.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A return channel structure of a linear slide rail is characterized by comprising: a slide rail, a slider, two at least back flow pipes and two end covers, wherein:

the sliding block is arranged on the sliding rail in a straddling mode through the sliding groove, at least one slide way is arranged between the sliding groove and the two sides of the sliding rail, a plurality of balls are arranged in the slide ways in a sliding mode, the sliding block can make reciprocating displacement on the sliding rail through the balls, and linear return channels which are matched with the slide ways on the same side in number and penetrate through the front end face and the rear end face of the sliding block are arranged on the outer side of each slide way;

the inner pipe part of the return pipe is provided with a plurality of spiral grains in a protruding way, the spiral grains are arranged in odd number which can not be eliminated, so that the ball can be driven by the spiral grains to generate lateral overturning when passing through the return pipe, and the return pipe is arranged in the return passage in a penetrating way;

the two end covers are respectively arranged on the front end surface and the rear end surface of the sliding block in a group mode, so that the inner side surface of the end covers is provided with a turning rotary groove in a connected and communicated mode, and the plurality of balls can circularly roll between the slide way and the return pipe in a backflow mode.

2. The return channel structure of a linear guide rail according to claim 1, wherein two slide ways are respectively provided between the slide groove and both sides of the slide rail, so that the return channel, the return pipe, and the rotary groove can be provided in the same number with respect to the two slide ways on each side.

3. The return channel structure of linear guide according to claim 1, wherein the return pipe is a wear-resistant plastic pipe.

4. The return channel structure of a linear guideway of claim 1, wherein the inner pipe portion of the return tube is provided with three helical threads.

5. The return channel structure of a linear guide according to claim 1, wherein five spiral threads are provided in the inner pipe portion of the return tube.

6. The return channel structure of a linear guide according to claim 1, wherein seven helical threads are provided in the inner pipe portion of the return tube.

7. The return channel structure of a linear guide according to claim 1, wherein a scraper is coupled to each of the outer sides of the two end caps.

8. The return channel structure of linear guide according to claim 1, wherein an upper retainer is further provided between the slide and the slider.