TWI805204B - Linear slide and slider assembly structure thereof - Google Patents

Abstract

This disclosure relates to a linear slide and slider assembly structure thereof. End caps are arranged on opposite sides of the slider and formed with a returning groove, a straight channel lug and a supporting arm. The supporting arm is located at the inner side of the returning groove near the slider and protrudes away from the returning groove. The holding assemblies are oppositely inserted in the slider. Each holding assembly includes a retaining cylinder and a lateral retaining plate. The retaining cylinder includes a tube, a returning pipe and a straight channel section. The lateral retaining plate is arranged between the plural connected retaining cylinders and has a supporting section. As a result, when the balls turn, gaps or separation at the junction of the retaining cylinder and the end cap due to the impact force and vibration may be avoided to keep the smoothness of the ball of rolling.

Description

Linear slide rail and its sliding block assembly structure

The invention relates to a linear slide rail, in particular to a sliding block assembly structure of the linear slide rail.

The linear slide rail device is mainly to install the slider structure on the track, so as to perform linear and repetitive motion. Moreover, the general slider structure includes a U-shaped slider, two end caps arranged on opposite sides of the slider, a plurality of balls arranged in the slider, and a retaining element for retaining the balls on the slider. Thereby, the sliding block can reduce the frictional force during relative movement between the sliding block and the track through the balls, so that the sliding block can move more smoothly.

The aforementioned slider structure utilizes retaining elements to provide rolling paths for the balls. At present, the existing retaining elements use the return pipe as the linear passage of the ball, and the return pipe is assembled on one side of the end cover. However, during the rolling cycle, the balls in the slider will generate relatively large impact force and vibration at the position of the end cover (that is, the assembly position of the return pipe and the end cover). Under the action of this continuous impact force and vibration, a gap or unevenness will be formed between the end cover and the return pipe, which will cause frictional resistance and affect the smoothness of the balls in the return pipe during rolling and circulation.

In view of this, the inventor of the present invention aimed at the above-mentioned prior art, devoted himself to research and combined with the application of theories, and tried his best to solve the above-mentioned problems, which became the goal of the inventor's improvement.

An object of the present invention is to provide a slider assembly structure of a linear slide rail, so as to avoid the separation of the end cover and the holding element group due to the impact force of the balls, so as to maintain the smoothness of the balls rolling.

In order to achieve the above purpose, the present invention is a slider assembly structure of a linear slide rail for holding multiple balls, including a slider, a pair of end caps and a plurality of holding element groups. The sliding block has a sliding groove, a plurality of grooves and a plurality of through holes arranged on opposite sides of the sliding groove. The end caps are arranged on the opposite side of the slider, and each end cap is formed with a plurality of return channels, a plurality of straight channel fins and a plurality of support arms on the side facing the slider, and each straight channel tab is located at the side of each return channel away from the slider. An outer side, each supporting arm is located on an inner side of each backflow slot close to the slider and protrudes toward a direction away from the backflow slot. A plurality of holding element groups are butted and inserted in the slider. Each holding element group includes a plurality of holding cylinders and a plurality of lateral holding sheets. The holding cylinders are arranged at intervals and connected on one side. Each holding cylinder includes a tube, a convex The return pipe exposed from the tube and the end section of the straight channel extending from the return pipe, each side holding piece is arranged between the plurality of connected holding cylinders and has a supporting section; wherein, when the end cover is correspondingly combined with the opposite side of the slider , one end of each retaining cylinder leans against one end surface of each straight channel lug, and each support arm is tied against the support section, and the return groove, the return pipe and the end section of the straight channel are enclosed to form a return bend connected to the end section of the straight channel road.

In order to achieve the above object, the present invention is a linear slide rail, comprising a slider assembly structure of the linear slide rail and a track passing through the chute of the slider.

Compared with the conventional technology, the end cover of the linear slide rail of the present invention is formed with a backflow groove and a support arm on the side facing the slider. The support arm is located on the inner side of the backflow groove close to the slider and faces away from the backflow groove. In addition, a supporting section is provided on the lateral holding piece of the holding element group, so that when the end cover is correspondingly combined on the opposite side of the slider, the supporting arm will lean against the supporting section, because the supporting arm is on the outside of the return groove. Resist the lateral retaining piece and support the retaining cylinder to avoid gaps or detachment at the intersection of the retaining cylinder and the end cover due to the impact and vibration of the ball when turning, so as to maintain the smoothness of the ball when rolling .

1. 1a: Linear slide rail

2: Ball

10, 10a: slider

11: Chute

12: Groove

13: Through hole

20, 20a: end cap

21: return tank

210: Return bend

22: Straight channel tab

23: Support arm

24: Upper holding piece

240: Positioning department

25: Lower holding column

250: Positioning Department

30, 30a: holding element group

31: Hold the barrel

311: Tube

312: return pipe

313: The end of the straight channel

32: Lateral holding piece

320: Positioning department

321: side panel

322: fins

323: support section

40: track

Fig. 1 is a three-dimensional appearance schematic diagram of the linear slide rail of the present invention.

Fig. 2 is a combined sectional view of the linear slide rail of the present invention.

Fig. 3 is a three-dimensional exploded schematic diagram of the slider assembly structure of the present invention.

Fig. 4 is a three-dimensional exploded schematic view of the slider and the holding element set of the present invention.

Fig. 5 is a three-dimensional exploded schematic view of the end cap and the holding element group of the present invention.

Fig. 6 is a schematic diagram of the combination of the end cap and the holding element group of the present invention.

Fig. 7 is a combined sectional view of the end cap and the holding element group of the present invention.

FIG. 8 is an exploded perspective view of another embodiment of the linear slide rail of the present invention.

Fig. 9 is a perspective view of another embodiment of the linear slide rail of the present invention.

The detailed description and technical content of the present invention are described below with the drawings, but the attached drawings are only for reference and description, and are not used to limit the present invention.

Please refer to FIG. 1 and FIG. 2 , which are respectively a three-dimensional appearance schematic diagram and a combined sectional view of the linear slide rail of the present invention. The present invention is a linear sliding rail 1 , which includes a sliding block 10 , a pair of end covers 20 , a plurality of retaining element groups 30 and a track 40 . The pair of end caps 20 are relatively combined on two sides of the slider 10 . The pair of holding element groups 30 pass through the slider 10, and these holding element groups 30 combine with the slider 10 to provide a plurality of The circular rolling path of the balls 2, and then the sliding block 10 is inserted on the track 40 to form the linear sliding track 1 . A more detailed description of the structure of the linear slide 1 is as follows.

Please refer to FIG. 3 to FIG. 5 , which are the three-dimensional exploded schematic diagrams of the end cover and the slider, the three-dimensional exploded schematic diagram of the slider and the retaining element group, and the three-dimensional exploded schematic diagram of the end cap and the retaining element group of the present invention. As shown in the figure, the cross section of the slider 10 is roughly U-shaped, and the slider 10 has a sliding groove 11 , a plurality of grooves 12 and a plurality of through holes 13 disposed on opposite sides of the sliding groove 11 .

The pair of end caps 20 are combined on two opposite sides of the slider 10 . Each of the end caps 20 is formed with a plurality of return channels 21 , a plurality of straight channel protrusions 22 and a plurality of support arms 23 on a side facing the slider 10 . Each straight channel tab 22 is located on an outer side of each return groove 21 away from the slider 10 . Each support arm 23 is located on an inner side of each return slot 21 close to the slider 10 and protrudes toward a direction away from the return slot 21 .

Furthermore, the retaining element groups 30 are butted against each other and inserted in the slider 10 . Each holding element group 30 includes a plurality of holding cylinders 31 and a plurality of lateral holding pieces 32 . The retaining cylinders 31 are arranged at intervals and connected at one side, and are butted against each other and passed through each of the through holes 13 . Each of the holding cylinders 31 includes a tube 311, a return pipe 312 and a straight passage end section 313 extending from the return pipe 312. one end.

In addition, each side holding piece 32 includes a side plate 321 and a wing 322 connected to the side plate 321 . One end of each supporting arm 23 is adjacent to each of the return channels 21 , and the other end is abutting against a terminal of the fin 322 . In addition, each lateral retaining piece 32 is disposed between a plurality of connected retaining cylinders 31 and has a supporting segment 323 . In this embodiment, the ends of the lateral holding pieces 32 are respectively provided with a positioning portion 320 , and the holding cylinders 31 abut against each other through the positioning portions 320 of the lateral holding pieces 32 .

Also, when the pair of end caps 20 are correspondingly combined on opposite sides of the slider 10, one end of each holding cylinder 31 abuts against an end surface of each straight channel lug 22, and the support arm 23 is tied against the support section 323. In addition, the return channel 21 , the return pipe 312 and the end section 313 of the straight channel surround and form a return bend 210 communicating with the end section 313 of the straight channel.

In more detail, the support arm 23 and the straight channel tab 22 are located on opposite sides of the return groove 21 . In this embodiment, each of the end caps 20 further has an upper retaining piece 24 . The upper holding piece 24 is connected between the two opposite backflow grooves 21 and abuts an outer side of a part of the groove 12 .

In this embodiment, a positioning portion 240 is respectively disposed at the ends of the upper holding piece 24 . The upper retaining pieces 24 of the pair of end caps 20 pass through the top of the sliding groove 11 and abut against each other through the positioning portions 240 .

In addition, each of the end caps 20 further has a plurality of lower retaining posts 25 arranged at intervals. The lower retaining posts 25 are against an outer side of a part of the grooves 12 so as to keep the plurality of balls 2 from moving out of the grooves 12 . In this embodiment, the ends of the lower holding columns 25 are respectively provided with a positioning portion 250 . The lower retaining posts 25 of the pair of end caps 20 pass through the bottom of the sliding groove 11 and abut against each other through the positioning portions 250 of the lower retaining posts 25 .

Please refer to FIG. 6 and FIG. 7 , which are a combined schematic view and a combined cross-sectional view of the end cap and the retaining element set of the present invention, respectively. As shown in the figure, when the retaining component sets 30 are butted against each other, the retaining tubes 31 abut against each other through the positioning portions 320 of the lateral retaining pieces 32 . In addition, the pair of end caps 20 are respectively combined on opposite sides of the retaining element groups 30 to serve as a path for the ball 2 to circulate and roll.

It should be noted that the supporting arm 23 extending from the end cover 20 will abut against the supporting sections 323 of the holding cylinders 31 and abut against the lateral holding piece 32 . This prevents gaps or disengagement at the joints between the retaining cylinders 31 and the end cap 20 due to the impact force and vibration when the ball turns, thereby maintaining the smoothness of the ball rolling.

Please also refer to FIG. 8 and FIG. 9 , which are respectively a three-dimensional exploded view and a three-dimensional appearance schematic view of another embodiment of the linear slide rail of the present invention. Compared with the previous embodiment, this embodiment is roughly the same, the difference The position is to maintain the size setting of the cylinder. In this embodiment, the linear slide rail 1a includes a sliding block 10a, a pair of end caps 20a and a plurality of holding element groups 30a. The pair of end caps 20a are oppositely combined on two sides of the slider 10a. The pair of retaining elements 30a passes through the slider 10a. It should be noted that the size of each holding element set 30a is longer than that of the previous embodiment, and the length of the slider 10a is correspondingly lengthened, so as to pass through the holding element sets 30a. In actual implementation, the size of each holding element group 30a and the slider 10a can be adjusted according to actual use requirements.

The above descriptions are only preferred embodiments of the present invention, and are not used to define the patent scope of the present invention. Other equivalent changes using the patent spirit of the present invention should all belong to the patent scope of the present invention.

20: end cap

21: return tank

210: Return bend

22: Straight channel tab

23: Support arm

24: Upper holding piece

240: Positioning department

25: Lower holding column

250: Positioning Department

30: Holding component group

31: Hold the barrel

311: Tube

312: return pipe

313: The end of the straight channel

32: Lateral holding piece

320: Positioning department

321: side panel

322: fins

323: support section

Claims (6)

A sliding block assembly structure of a linear slide rail is used to hold a plurality of balls, comprising: a sliding block having a sliding groove, a plurality of grooves and a plurality of through holes arranged on opposite sides of the sliding groove; a pair of end covers, It is arranged on the opposite side of the slider, and each end cover is formed with a plurality of backflow grooves, a plurality of straight channel fins and a plurality of support arms on the side facing the slider, and each straight channel fin is located away from the backflow grooves. An outer side of the slider, each support arm is located at an inner side of each return groove close to the slider and protrudes toward a direction away from the return groove; and a plurality of holding element groups are butted against each other and inserted in the slider , each holding element group includes a plurality of holding cylinders and a plurality of lateral holding sheets, these holding cylinders are arranged at intervals and connected on one side, each holding cylinder includes a tube, a return pipe protruding from the tube and a self-contained tube. At the end section of the straight channel extending from the return pipe, each side holding piece is arranged between the plurality of connected holding cylinders and has a supporting section; wherein, when the pair of end caps are correspondingly combined on the opposite side of the slider, each One end of the retaining cylinder abuts against an end surface of each of the straight passage tabs, and each of the support arms abuts against the support section, and the return groove, the return pipe and the end section of the straight passage are surrounded to form a communication channel. A backflow bend at the end of the channel; each of the end caps further has an upper retaining piece, which is connected between the two opposite backflow grooves and blocks an outer side of a part of the groove, and the support arm leans against abut against the support sections of the holding cylinders, and abut against the lateral holding pieces. The sliding block assembly structure of the linear slide rail according to claim 1, wherein the support arm and the straight channel tab are located on opposite sides of the backflow groove. The slider assembly structure of the linear slide rail as described in Claim 1, wherein each of the lateral holding pieces includes a side plate and a wing connected to the side plate, and one end of each of the support arms is adjacent to each of the return grooves, and the other end is abutted against one end of the fin. The slider assembly structure of the linear slide rail according to claim 1, wherein the ends of the lateral holding pieces are respectively provided with a positioning portion, and the holding cylinders are mutually abutted through the positioning portions of the lateral holding pieces catch. The sliding block assembly structure of the linear slide rail as described in claim 1, wherein each of the end covers has a plurality of lower holding columns arranged at intervals, and these lower holding columns are blocked against an outer side of a part of the groove to maintain a plurality of The balls will not move out of these grooves. A linear slide rail, comprising: a slider assembly structure of the linear slide rail according to any one of claims 1 to 5; and a track passing through the chute of the slider.

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