TWI782789B - Linear slides with lubricated structure - Google Patents

Abstract

The linear slide rail of the present invention includes a slide rail, a slide block, a circulation fitting, two sets of balls and two lubricating sheets. The slider and the circulation fitting are jointly arranged on the slide rail and are connected to each other. The slider has two opposite feet, and the circulation fitting has two opposite pockets. The pockets of the circulation fitting receive the feet of the slider. A circulation passage for a group of balls is formed between the feet of the slide rail, the slider and the circulation fittings. Two lubricating sheets are adjacent to the two circulation passages and contact the two sets of balls to provide lubrication for the balls. Effect. In this way, the linear slide rail of the present invention hides two lubricating sheets in the slider, which can maintain the length of the slider without affecting the stroke, and ensure that there will be no step difference in the running path, so that the running smoothness of the balls can be kept consistent .

Description

Linear slide rail with lubricating structure

The invention relates to a linear slide rail, in particular to a linear slide rail with a built-in lubricating structure.

For the Miniature Linear Slide, the oil tank is usually installed at one end of the slider by hanging, but this kind of hanging structure will cause the overall length of the slider to become longer and affect the stroke of the slider. Under short-stroke operating conditions, the lubricating oil cannot provide sufficient lubrication, which leads to the risk of product failure.

The technology disclosed in the US 8,783,951 patent case is to arrange two porous lubricating pipes between the slider and the circulation fitting, and when the balls pass through, they can be squeezed by the balls to release the lubricating oil. However, there is a step difference between the aforementioned porous lubricating pipe and the return flow path, which will affect the smoothness of the ball running. In addition, the aforementioned porous lubricating pipe is arranged on the non-load side. Under short-stroke operating conditions, the balls on the load side cannot obtain sufficient lubrication, which easily leads to premature failure of the product.

The technology disclosed in the US 6,290,394 patent case is to add a lubricating sheet to the end cover, resulting in an increase in the overall length of the slider, thereby affecting the stroke of the slider. In addition, under short-stroke operating conditions, the lubricating oil cannot be completely applied to the track, making it difficult to obtain sufficient lubrication on the load surface, which easily leads to early failure of the product.

The technology disclosed in the CN 104024669 patent case is to place a U-shaped lubricating plate on the belly of the slider, and the two ends of the U-shaped lubricating plate are in contact with the balls to lubricate the balls. However, there is a step difference between the U-shaped lubricating plate and the return flow path, and the U-shaped lubricating plate is relatively thin, which makes it easy to be damaged when impacted by the balls. In order to increase the structural strength, the lubricant content needs to be further reduced, which will result in a shortened service life.

The main purpose of the present invention is to provide a linear slide rail with a lubricating structure, which can provide sufficient lubricating effect under short-stroke operating conditions, and keep the smoothness of ball running consistent.

In order to achieve the above main purpose, the linear slide rail with lubricating structure of the present invention includes a slide rail, a sliding block, a circulation fitting, two sets of balls, and two lubricating sheets. The slider is slidably arranged on the slide rail, and the bottom surface of the slider has two oppositely arranged feet, and the feet are located on two opposite sides of the slide rail; the circulation fitting is slidably arranged on The slide rail is connected with the slide block, and the circulating fitting has two oppositely arranged cavities, and the cavities of the circulating fitting receive the feet of the slide block, so that each of the slide rail and the slide block A circulation channel is formed between the foot and the circulation fitting; each group of balls is set in one of the circulation channels; two lubricating sheets are adjacent to the two circulation channels and contact the two sets of balls to provide lubrication to the balls .

It can be known from the above that the linear slide rail with lubricating structure of the present invention has these lubricating sheets built in the slider, which can not only maintain the existing length of the slider, but also prevent the stroke of the slider from being affected, which is quite Suitable for use under short stroke operating conditions, moreover, such lubricated The sheet keeps in contact with the balls during the running of the balls, so that there will be no step difference in the running path of the balls, so that the running smoothness of the balls can be kept consistent.

Preferably, the lubricating sheets can selectively contact the top or bottom edges of the balls, and the lubricating sheets can also contact the top and bottom edges of the balls.

Preferably, each lubricating sheet has a positioning post, and the circulation fitting has a positioning hole, and each lubricating sheet is inserted into the positioning hole of the circulating fitting with the positioning post, so as to facilitate the assembly and positioning of each lubricating sheet.

Preferably, each of the lubricating sheets has a socket groove, and each of the lubricating sheets is sleeved on the foot of one of the sliders through the socket groove to complete the assembly.

Preferably, each of the lubricating sheets has a covering portion adjacent to the sleeve groove, each of the lubricating sheets covers a part of the balls with the covering portion, so that each of the lubricating sheets can more reliably The balls provide lubrication.

Preferably, each of the lubricating sheets contacts the bottom edges of the balls with a flat surface, so as to provide lubricating effect to the balls.

Preferably, the slide rail has two first rolling grooves parallel to each other, each of the feet of the slider has two second rolling grooves parallel to each other and two opposite first return grooves, each of the first The return groove is connected to one end of the second rolling grooves, and the circulation fitting is provided with a third rolling groove and two opposite second returning grooves around each of the containing grooves, and the second returning grooves are connected to the third rolling grooves One of the second rolling grooves of each of the feet of the slider corresponds to one of the first rolling grooves of the slide rail, and the other second rolling groove of each of the feet of the slider corresponds to The third rolling groove should be one of the circulation accessories, and the first return grooves of each of the feet of the slider correspond to the second return grooves of the circulation accessory, so that the first rolling groove, the second return grooves two The rolling groove, the third rolling groove, the first returning grooves and the second returning grooves together form a circulation channel.

Preferably, the slide rail has two first rolling grooves parallel to each other, each of the feet of the slider has two second rolling grooves parallel to each other, and the circulation fitting is provided with a first rolling groove around each of the containing grooves. Three rolling grooves, two opposite second return grooves and two opposite first half-return parts, the second return grooves are connected to the two ends of the third rolling groove, and each of the first half-return parts is adjacent to one of the first half-return parts Two return grooves, each of the lubricating sheets has two opposite second half return portions, each of the second half return portions is adjacent to one end of the socket groove, wherein one of the second of each of the feet of the slider The rolling groove corresponds to the first rolling groove of the slide rail, and the other second rolling groove of each foot of the slider corresponds to the third rolling groove of the circulation fitting, and the circulation fittings The first half-return parts connect the second half-return parts of the lubricating sheets to form the first return grooves, and the first return grooves correspond to the second return grooves of the circulation fitting, so that a first The rolling grooves, the second rolling grooves, the third rolling grooves, the first returning grooves and the second returning grooves jointly constitute a circulation channel.

Preferably, each lubricating sheet is made of porous material, so that each lubricating sheet has a good oil storage capacity.

The detailed structure, features, assembly or usage of the linear slide rail with lubricating structure provided by the present invention will be described in the following detailed description of the implementation. However, those with ordinary knowledge in the field of the present invention should understand that the detailed description and the specific embodiments enumerated for implementing the present invention are only for illustrating the present invention, and are not intended to limit the scope of the patent application of the present invention.

10: Linear slide rail with lubricating structure

12: Linear slide rail with lubricating structure

14: Linear slide rail with lubricating structure

16: Linear slide rail with lubricating structure

20: slide rail

22: The first rolling groove

30: Slider

32: feet

34: The second rolling groove

36: The first reflux tank

40: Loop accessories

41: tank

42: The third rolling groove

43: The second reflux tank

44: uplift

45: positioning hole

46: The first half return section

47: screw

50: ball

52: Loop channel

60: lubricating sheet

62: socket slot

64: positioning column

66: cladding part

68: Second half return section

70: lubricating sheet

FIG. 1 is a perspective view of a linear slide rail with a lubricating structure according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the linear slide rail with lubricating structure according to the first embodiment of the present invention.

Fig. 3 is a cross-sectional view along line 3-3 in Fig. 1 .

Fig. 4 is a cross-sectional view along line 4-4 in Fig. 3 .

Fig. 5 is a cross-sectional view along line 5-5 in Fig. 1 .

FIG. 6 is a perspective view of the lubricating sheet provided by the linear slide rail with lubricating structure according to the first embodiment of the present invention after turning over.

7 is a cross-sectional view of a linear slide rail with a lubrication structure according to a second embodiment of the present invention, mainly showing that the lubricating sheet is in contact with the top edge of the ball.

Figure 8 is similar to Figure 7, mainly showing that the lubricating sheet is in contact with the bottom edge of the ball.

Fig. 9 is similar to Fig. 7, mainly showing that the lubricating sheet is in contact with the top edge and the bottom edge of the ball.

Fig. 10 is a perspective view of a linear slide rail with a lubricating structure according to a third embodiment of the present invention.

FIG. 11 is an exploded perspective view of a linear slide rail with a lubricating structure according to a third embodiment of the present invention.

Fig. 12 is a sectional view of Fig. 10 taken along line 12-12.

Fig. 13 is a cross-sectional view of Fig. 12 along line 13-13.

Fig. 14 is a cross-sectional view of Fig. 10 along line 14-14.

Fig. 15 is a perspective view of a linear slide rail with a lubricating structure according to a fourth embodiment of the present invention.

FIG. 16 is an exploded perspective view of a linear slide rail with a lubricating structure according to a fourth embodiment of the present invention.

Fig. 17 is a cross-sectional view along line 17-17 in Fig. 15 .

The applicant hereby explains that in the entire specification, including the embodiments described below and the claims of the scope of the patent application, the nouns related to direction are based on the directions in the drawings. Secondly, in the embodiments and drawings to be described below, the same component numbers represent the same or similar components or their structural features.

Please refer to Fig. 1 and Fig. 2, the linear slide rail 10 with lubricating structure of the first embodiment of the present invention includes a slide rail 20, a slider 30, a circulation fitting 40, two sets of balls 50, and two lubricating sheets 60.

Two opposite sides of the slide rail 20 have a first rolling groove 22 extending along the length direction thereof.

The bottom surface of the slider 30 has two oppositely arranged foot portions 32, and each foot portion 32 has two mutually parallel second rolling grooves 34 and two oppositely arranged first return grooves 36, and each first return flow groove 36 connects two One end of the second rolling groove 34. As shown in FIGS. 3 and 4 , the slider 30 straddles the top of the slide rail 20 , so that the two feet 32 are located on two opposite sides of the slide rail 20 , and one of the second rolling grooves 34 of the two feet 32 Corresponding to the two first rolling grooves 22 of the slide rail 20 .

The top surface of the circulation fitting 40 has two oppositely arranged holding grooves 41, and the circulating fitting 40 is provided with a third rolling groove 42 and two oppositely arranged second return grooves 43 around each holding groove 41, and the third rolling groove 42 Located on a raised portion 44 adjacent to the containing groove 41 , the two second return grooves 43 are connected to two ends of the third rolling groove 42 . The top surface of the circulation fitting 40 further has four positioning holes 45 (as shown in FIG. 2 ), and the positioning holes 45 are respectively adjacent to the second return flow grooves 43 . As shown in Fig. 3 to Fig. 5, the circulation fitting 40 straddles the top of the slide rail 20, and two screws 47 at the front and rear are locked together with the slide block 30 so that the two can slide along the slide rail 20 together. . In addition, the cycle The two grooves 41 of the component 40 accept the two feet 32 of the slider 30, on the one hand, the two third rolling grooves 42 of the circulation fitting 40 correspond to the other second rolling grooves of the two feet 32 of the slider 30 34. On the other hand, make the second return grooves 43 of the circulation fitting 40 correspond to the first return grooves 36 of the two feet 32 of the slider 30. Thereby, as shown in FIG. 4, the first rolling grooves 22, the second rolling grooves 34, the third rolling grooves 42, the first return grooves 36 and the second return grooves 43 respectively constitute Two circulation passages 52, each circulation passage 52 is provided for a group of balls 50 to run.

The lubricating sheet 60 is made of porous material, such as polymer material, polyolefin, paraffin or high-density fiber. In this embodiment, each lubricating sheet 60 has a socket groove 62 penetrating through both sides of the top and bottom, and two ends of the bottom surface of each lubricating sheet 60 respectively have a positioning post 64 . As shown in Figures 3 to 5, the lubricating sheets 60 are adjacent to the circulation passages 52 and contact the top edges of the two sets of balls 50 (that is, the lubricating sheets 60 are respectively arranged around the circulation passages 52, and keep in contact with the balls 50), and are respectively sleeved on the feet 32 of the slider 30 with socket grooves 62, and inserted in the positioning holes 45 of the circulation fitting 40 with the positioning posts 64, In this way, the assembly of the lubricating sheets 60 is completed, so that the lubricating sheets 60 can provide lubrication to the balls 50 . In addition, as shown in FIG. 6 , the bottom surface of each lubricating sheet 60 further has an arc-shaped covering portion 66 adjacent to the sleeve groove 62 , and each lubricating sheet 60 covers a part of the balls 50 with the covering portion 66 . Each lubricating sheet 60 can more reliably provide lubricating effects to the balls 50 .

Please refer to Fig. 7 and Fig. 8, the structure of the linear slide rail 12 with lubricating structure of the second embodiment of the present invention is roughly the same as that of the above-mentioned first embodiment, the main difference is that the structure of the circulation fitting 80 is slightly different, so that The lubricating sheet 60 can contact the top edge or the bottom edge of the balls 50 according to actual needs. In detail, the circulation fitting 80 omits the raised portion 44 in this embodiment. The setting increases the width of the groove 41. In this way, the lubricating sheets 60 can be arranged on the top edge of the balls 50 (as shown in FIG. In the equal volume groove 41 and in contact with the bottom edges of the balls 50 (as shown in Figure 8), even a lubricating sheet 60 can be respectively arranged on the top edge and the bottom edge of the balls 50, so that the lubricating sheets 60 Simultaneously contact the top and bottom edges of the balls 50 (as shown in FIG. 9 ).

Please refer to Fig. 10 and Fig. 11, the linear guide rail 14 with lubricating structure of the third embodiment of the present invention is substantially the same in structure as the above-mentioned first embodiment, the main difference is that the feet 32 originally arranged on the slider 30 In this embodiment, the two first return grooves 36 are arranged between the circulation fitting 40 and the two lubricating sheets 60 , so that the processing of the slider 30 can be facilitated. Furthermore, the slide rail 20 has two first rolling grooves 22 parallel to each other; each foot portion 32 of the slider 30 has two second rolling grooves 34 parallel to each other; 41 is provided with a third rolling groove 42, two opposite second return grooves 43 and two opposite first half return portions 46, and these second return grooves 43 connect the two ends of the third rolling groove 42, the The first half return parts 46 are adjacent to the second return grooves 43; the bottom surface of each lubricating sheet 6 has two opposite second half return parts 68, and the second half return parts 68 are adjacent to the two ends of the sleeve grooves 62 , wherein, as shown in FIGS. rolling groove 42, and the first half-return parts 46 of the circulation fitting 40 connect the second half-return parts 68 of the lubricating sheets 60 to form the first return grooves 36, and the first return grooves 36 are The second return tanks 43 of the accessories 40 should be circulated. Thereby, the first rolling grooves 22, the second rolling grooves 34, the third rolling grooves 42, the first returning grooves 36 and the second returning grooves 43 jointly form two circulation passages 52, each A circulation channel 52 is provided for a set of balls 50 to run. In addition, such In this embodiment, the lubricating sheet 60 is also adjacent to the circulation passages 52 and contacts the top edges of the two sets of balls 50, and is respectively sleeved on the feet of the slider 30 through the sleeve grooves 62, so as to The balls 50 provide lubrication.

Please continue to refer to Fig. 15 and Fig. 16, the structure of the linear slide rail 16 with lubricating structure of the fourth embodiment of the present invention is roughly the same as that of the above embodiment, the main difference lies in the structural style and installation position of the lubricating sheet 70. . In detail, the lubricating sheets 70 do not have socket grooves 62 in this embodiment, so they are not sleeved on the feet 32 of the slider 30, but placed directly in the grooves of the circulation fitting 40 41, as shown in Figure 17, so that the lubricating sheets 70 contact the bottom ends of the feet 32 of the slider 30 with their top surfaces on the one hand, and contact the bottom edges of the balls 50 with their top surfaces on the other hand. , so that the balls 50 can also be lubricated.

To sum up, the linear slide rails 10, 12, 14, 16 with lubricating structure of the present invention have these lubricating sheets 60, 70 embedded in the slider 30, which can not only maintain the existing length of the slider 30, but also make the The stroke of the slide block 30 will not be affected, which is quite suitable for use under short-stroke operating conditions; Keeping in contact can prevent the lubricating sheets from producing step differences on the running path of the balls 50, so that the running smoothness of the balls 50 can be kept stable and consistent, thereby achieving the purpose of the present invention.

20: slide rail

22: The first rolling groove

30: Slider

32: feet

34: The second rolling groove

36: The first reflux tank

40: Loop accessories

41: tank

42: The third rolling groove

43: The second reflux tank

45: positioning hole

47: screw

50: ball

60: lubricating sheet

62: socket slot

64: positioning column

Claims (10)

A linear slide rail with lubricating structure includes a slide rail; a slide block is slidably arranged on the slide rail, the bottom surface of the slide block has two opposite feet, and the feet are located on two sides of the slide rail On the opposite side; a circulation fitting, slidably arranged on the slide rail and connected to the slider, so that a circulation channel is formed between the circulation fitting, the slide rail and each of the feet of the slider; two sets of balls, Each group of balls is arranged in one of the circulation passages; and two lubricating sheets are respectively arranged adjacent to one of the circulation passages and respectively contact a group of balls; Stay in touch. The linear slide rail with lubricating structure as claimed in claim 1, wherein the lubricating sheets contact the top edge or the bottom edge of the balls. The linear slide rail with lubricating structure as described in claim 2, wherein, each of the lubricating sheets has a positioning post, and the circulation fitting has a positioning hole, and each of the lubricating sheets is inserted into the circulating fitting by the positioning post positioning hole. The linear slide rail with lubricating structure as claimed in claim 1, wherein the lubricating sheets contact the top and bottom edges of the balls. The linear slide rail with lubricating structure according to any one of claims 1 to 4, wherein each of the lubricating sheets has a socket groove, and each of the lubricating sheets is sleeved on one of the sliders through the socket groove the foot. The linear slide rail with lubricating structure as described in claim 5, wherein, each of the lubricating sheets has a coating portion adjacent to the sleeve groove, and each of the lubricating sheets covers the balls with the coating portion part. The linear slide rail with lubricating structure as described in claim 4, wherein, the circulation fitting further has two opposite grooves, and the lubricating sheets are arranged in the grooves of the circulation fitting and contact the sliding block. the feet and the bottom edges of the balls. The linear slide rail with lubricating structure as described in Claim 1, wherein, the slide rail has two first rolling grooves parallel to each other, each of the feet of the slider has two second rolling grooves parallel to each other and two opposite rolling grooves. Each of the first return grooves is connected to one end of the second rolling grooves. The circulation fitting is provided with a third rolling groove and two opposite second return grooves around each of the containing grooves. The two return grooves connect the two ends of the third rolling groove, one of the second rolling grooves of each of the feet of the slider corresponds to the first rolling groove of the slide rail, and each of the feet of the slider The other second rolling groove of the circulation fitting corresponds to the third rolling groove of the circulation fitting, and the first return grooves of each of the feet of the slider correspond to the second return grooves of the circulation fitting, so that a The first rolling groove, the second rolling grooves, the third rolling groove, the first returning grooves and the second returning grooves jointly form a circulation channel. The linear slide rail with lubricating structure as described in claim 1, wherein, the slide rail has two first rolling grooves parallel to each other, each of the feet of the slider has two second rolling grooves parallel to each other, and the cycle The accessories are provided with a third rolling groove, two opposite second return grooves and two opposite first half return parts around each of the containing grooves. The second return grooves are connected to the two ends of the third rolling groove, and each of the The first half return portion is adjacent to the second return groove, each of the lubricating plates has two opposite second half return portions, each of the second half return portions is adjacent to one end of the socket groove, and the sliding block One of the second rolling grooves of each of the feet corresponds to one of the first rolling grooves of the slide rail, and the other second rolling groove of each of the feet of the slider corresponds to the first of the circulating accessories Three rolling grooves, and the first half-return parts of the circulation fitting connect to the second half-return parts of the lubricating sheets to form the first return grooves, and the first return grooves correspond to the circulation fittings and other second return grooves, so that the first rolling groove, the second rolling grooves, the third rolling groove, the first returning grooves and the second returning grooves jointly form a circulation channel. The linear slide rail with lubricating structure as claimed in claim 1, wherein each of the lubricating sheets is made of porous material.

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