Linear sliding rail and upper dustproof piece of linear sliding rail

Abstract

The invention discloses a linear sliding rail and an upper dustproof piece of the linear sliding rail. The upper dustproof piece comprises a connecting section and two floating dustproof sections connected to the two opposite sides of the connecting section respectively. Each floating dustproof section is provided with a bearing strip and at least one rib connected with the bearing strip. Each bearing strip is provided with two end portions, and each end portion is provided with an oblique angle far away from at least one rib. The oblique angles of the four end portions are used for being inserted into four fault-tolerant grooves of two end covers respectively, a fault-tolerant gap is reserved between each end portion and the corresponding end cover, so that the oblique face of each oblique angle can abut against the corresponding fault-tolerant groove, and each end portion can deform towards the fault-tolerant gap. Therefore, through the structural matching of each end part and the corresponding fault-tolerant slot, each end part can be deformed towards the fault-tolerant gap so as to absorb the assembly tolerance.

Description

Technical Field

[0001] The invention relates to a slide rail, in particular to a linear slide rail and a dustproof part thereon. Background Art

[0002] After the existing upper dustproof parts are assembled into the linear slide rail, they will be affected by the assembly tolerance and cannot maintain the predetermined contact force with the rail against which they are abutted, thereby invisibly affecting the service life and dustproof effect of the existing upper dustproof parts. The inventor believes that the above defects can be improved, so he has devoted himself to research and combined with the application of scientific principles, and finally proposed a reasonable design and effective improvement of the above defects. Summary of the invention

[0003] The embodiment of the present invention aims to provide a linear slide rail and an upper dustproof member thereof, wherein the upper dustproof member can effectively improve the defects that may be caused by the existing upper dustproof member.

[0004] The embodiment of the present invention discloses a linear slide rail, which comprises: a track having two side surfaces located at opposite sides and an upper surface connected to the two side surfaces; a sliding module slidably arranged on the track along a sliding direction, and the sliding module comprises: a slider comprising a base and two side wing portions extending from the base, and the inner edges of the two side wing portions face the two side surfaces respectively; two circulation seats are respectively installed on the two side wing portions and correspond to the two side surfaces respectively; and an upper dustproof member, which comprises: a connecting section arranged corresponding to the base of the slider; and two floating dustproof sections, which are respectively connected to the opposite sides of the connecting section, and each floating dustproof section has a bearing bar and at least one rib connected to the bearing bar; wherein each bearing bar has two end portions extending from the two end surfaces of the slider respectively, and each end portion has a distal end. An oblique angle away from at least one rib; and two end covers, which are respectively installed on the two end faces, and the two end covers can be slidably arranged on the track; wherein each end cover is formed with two fault-tolerant grooves from the surface adjacent to the corresponding end face; in each end cover, the notches of the two fault-tolerant grooves are away from each other along a width direction perpendicular to the sliding direction, and each notch has a stop angle and a matching angle, and the stop angle and the matching angle are facing each other along a thickness direction perpendicular to the sliding direction and perpendicular to the width direction; wherein the oblique angles of the four end portions are respectively inserted into the four fault-tolerant grooves of the two end covers, and a fault-tolerant gap is left between each end and the corresponding end cover, so that when at least one rib of each floating dustproof section abuts against the upper surface of the track, the inclined surface of each oblique angle abuts against the matching angle of the corresponding fault-tolerant groove, and each end can be deformed toward the fault-tolerant gap.

[0005] Preferably, in each end and the corresponding fault-tolerant groove, there is an angle between the inclined surface and the width direction ranging from 40 degrees to 60 degrees, and the inclined angle does not touch the stop angle.

[0006] Preferably, in each end portion and the corresponding error-tolerant groove, the bevel angle and the stop angle are separated by a gap ranging from 0.05 mm to 0.5 mm along the thickness direction.

[0007] Preferably, in each end and the corresponding fault-tolerant groove, the stop angle and the matching angle are both right angles, and the edge of the stop angle and the edge of the matching angle are arranged along the thickness direction, and the inclined surface abuts against the edge of the matching angle.

[0008] Preferably, in each end and the corresponding tolerance groove, the stop angle is a right angle, the matching angle is an oblique angle and has a guide slope, and the edge of the stop angle corresponds to the guide slope along the thickness direction, the angle between the inclined surface and the width direction is greater than the angle between the guide slope and the width direction, and the upper edge of the inclined surface away from the stop angle abuts against the guide slope.

[0009] Preferably, the tolerance gap formed between each end and the corresponding end cap is between 0.05 mm and 0.5 mm in the thickness direction.

[0010] Preferably, the tolerance gap formed between each end and the corresponding end cap is between 0.05 mm and 0.5 mm in the width direction.

[0011] Preferably, each end has a limit block adjacent to the bevel; in each end and the corresponding fault-tolerant groove, the limit block is separated from at least one rib by a distance of 0.7 mm to 1.0 mm along the width direction, and the limit block is separated from the lower edge of the inclined surface adjacent to the stop angle by a distance of 0.2 mm to 0.5 mm along the width direction.

[0012] Preferably, at least one rib comprises a free end edge abutting against the upper surface, and the free end edge is arc-shaped and has a radius of curvature of 0.05 mm to 0.5 mm.

[0013] An embodiment of the present invention also discloses an upper dustproof part of a linear slide rail, which includes: a connecting section; and two floating dustproof sections, which are respectively connected to opposite sides of the connecting section, and each floating dustproof section has a bearing bar and at least one rib connected to the bearing bar; wherein each bearing bar has two end portions extending from two end surfaces, respectively, and each end portion has an oblique angle away from at least one rib; wherein the oblique angles of the four end portions are used to be respectively inserted into four fault-tolerant grooves of the two end covers, and a fault-tolerant gap is left between each end portion and the corresponding end cover, so that the inclined surface of each oblique angle can abut against the corresponding fault-tolerant groove, and each end portion can be deformed toward the fault-tolerant gap.

[0014] To summarize, the linear slide rail and the upper dustproof part thereof disclosed in the embodiment of the present invention enable each end to deform toward the fault-tolerant gap through the structural combination of each end and the corresponding fault-tolerant groove, thereby absorbing the assembly tolerance between components and maintaining the contact force of the upper dustproof part against the rail.

[0015] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the description and drawings are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the linear slide rail according to the first embodiment of the present invention.

[0017] Figure 2 For along Figure 1 Schematic cross-sectional view of section line II-II.

[0018] Figure 3 for Figure 2 A partial three-dimensional enlarged schematic diagram (ball bearing omitted).

[0019] Figure 4 For along Figure 1 Schematic cross-sectional view of section line IV-IV in.

[0020] Figure 5 for Figure 1 Schematic diagram of the decomposition.

[0021] Figure 6 for Figure 5 Schematic diagram of the exploded view of the sliding module in.

[0022] Figure 7 for Figure 6 A three-dimensional schematic diagram of the circulation seat in.

[0023] Figure 8 for Figure 7 Schematic side view of .

[0024] Fig. 9 for Figure 4 Schematic diagram of enlarged area IX.

[0025] Fig.10 It is a partial enlarged schematic cross-sectional view of the linear slide rail according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following is an explanation of the implementation methods of the "linear guide rail and dustproof parts thereon" disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, it is stated in advance that the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. The following implementation methods will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0027] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or a combination of multiple items in the associated listed items depending on the actual situation.

[0028] [Example 1]

[0029] See also Figures 1 to 9 As shown in , it is the first embodiment of the present invention. This embodiment discloses a linear guide rail 100, which is described as a standard linear guide rail in this embodiment, but the present invention is not limited thereto. Figures 1 to 5 As shown, the linear guide rail 100 in this embodiment includes an elongated track 10, a sliding module 20 slidably disposed on the track 10 along a sliding direction D, and two end covers 30 respectively installed at opposite ends of the sliding module 20 and slidably disposed on the track 10.

[0030] like Figure 2 , Figure 4 and Figure 5 As shown, the length direction of the track 10 defines the sliding direction D, and the track 10 includes an upper surface 101 and two side surfaces 102 located on opposite sides. In this embodiment, the track 10 is linear, and the upper surface 101 and the two side surfaces 102 are parallel to the sliding direction D, but the present invention is not limited thereto. For example, in other embodiments not described in the present invention, the track 10 may also be arc-shaped.

[0031] like Figures 4 to 6 As shown, the sliding module 20 in this embodiment includes a slider 1, two circulation seats 2 installed on the slider 1, a plurality of balls 3, and a plurality of dustproof parts 4 installed on the slider 1 and abutting against the track 10.

[0032] In addition, the two end caps 30 are respectively mounted on the two end surfaces 11 of the slider 1, so that the sliding module 20 and the two end caps 30 jointly define a plurality of rolling paths P, and the plurality of balls 3 respectively move along the plurality of rolling paths P. Each of the rolling paths P is in a closed loop, and the positions of the plurality of rolling paths P respectively correspond to the two side surfaces 102 of the track 10. In addition, the two ends of each dustproof member 4 are respectively fixed to the two end caps 30, and the plurality of dustproof members 4 are respectively in contact with the upper surface 101 and the two side surfaces 102 of the track 10, thereby isolating the plurality of rolling paths P from the external environment, thereby achieving a dustproof effect.

[0033] The slider 1 is elongated in this embodiment, and the sliding direction D can also be defined by the length direction of the slider 1. The slider 1 includes a base 12 and two side wings 13 extending from the base 12, and the two end surfaces 11 of the slider 1 are perpendicular to the sliding direction D. In addition, the inner edge of the base 12 faces the upper surface 101 of the track 10, and the inner edges of the two side wings 13 face the two side surfaces 102 of the track 10.

[0034] Each of the circulation seats 2 is defined as an integrally formed one-piece structure, so any circulation seat formed by assembly is not the circulation seat 2 referred to in this embodiment. The two circulation seats 2 are respectively mounted on the two side wing portions 13 of the slider 1 and correspond to the two side surfaces 102 respectively.

[0035] It should be noted that the two circulation seats 2 in this embodiment are arranged in mirror symmetry with respect to the track 10, so for ease of description, only the structure of a single circulation seat 2 is introduced below, but the present invention is not limited thereto. For example, in other embodiments not described in the present invention, the structures of the two circulation seats 2 may also be slightly different.

[0036] like Figures 6 to 8 As shown, the circulation seat 2 in this embodiment includes two turning parts 21, a middle holding part 22 and two side holding parts 23. The middle holding part 22 is connected to the two side holding parts 23 and is located between the two turning parts 21, and the two side holding parts 23 are respectively located on opposite sides of the middle holding part 22. The middle holding part 22 and the two side holding parts 23 are respectively parallel to the sliding direction D, but the present invention is not limited thereto.

[0037] In more detail, the two turning portions 21 are respectively arranged on the two end surfaces 11 of the slider 1; that is, the slider 1 is provided with a turning portion 21 of each circulation seat 2 on each end surface 11, so that each end cover 30 covers a turning portion 21 of each circulation seat 2 (or, each end cover 30 covers two turning portions 21 adjacent to each other but belonging to different circulation seats 2).

[0038] The middle retaining portion 22 is defined as a double-step structure parallel to the sliding direction D. That is, the middle retaining portion 22 in this embodiment can be a structure other than a double-step structure (e.g., a three-step structure), which helps to connect the two ends of the middle retaining portion 22 to the two steering portions 21 as a whole, thereby realizing that the circulation seat 2 is an integrally formed single-piece structure.

[0039] The middle retaining portion 22 (or the double-stage structure) in this embodiment includes a connecting strip 221 and a limiting strip 222 connected to the connecting strip 221. The limiting strip 222 of the middle retaining portion 22 cooperates with any of the side retaining portions 23 to correspond to a rolling path P, and the rolling path can form a closed loop through the two turning portions 21.

[0040] In addition, the limiting strip 222 of the middle retaining portion 22 and the two side retaining portions 23 each have a side interface 2221, 231 adjacent to the track 10, and the plurality of boundary surfaces 2221, 231 are parallel to each other, and the boundary surfaces 231 of the two side retaining portions 23 are arranged in a coplanar manner.

[0041] Specifically, the connecting strip 221 is connected and located between the two turning portions 21, and the distance between the two long sides 2211 of the connecting strip 221 increases gradually in the direction away from the limiting strip 222. In this embodiment, the two long sides 2211 of the connecting strip 221 preferably have a configuration angle σ221 between 20 degrees and 45 degrees, so that the two ends of the connecting strip 221 are connected to the two turning portions 21 respectively.

[0042] In addition, in a cross section of the circulation seat 2 perpendicular to the sliding direction D (eg: Figure 8 ), the cross-section of the connecting strip 221 is trapezoidal, and the length L221 of the bottom side of the trapezoidal cross-section of the connecting strip 221 is 60% to 80% of the length L222 of the boundary surface 2221 corresponding to the cross-section of the limiting strip 222, but the present invention is not limited thereto.

[0043] The above is a structural description of a single circulation seat 2. The following will introduce the matching relationship between multiple components of the sliding module 20, but the present invention is not limited thereto. Figure 3 and Figure 5 As shown, in each of the circulation seats 2, the connecting strip 221 is connected to any one of the turning portions 21 to form a missing corner 24; each of the end covers 30 has two matching blocks 301, whose shapes correspond to any one of the missing corners 24, and the matching blocks 301 of the two end covers 30 are respectively inserted into the missing corners 24 of the two circulation seats 2, and any one of the long sides 2211 of the connecting strip 221 can be coplanarly arranged with the corresponding surface of the turning portion 21 and the corresponding surface of the matching block 301.

[0044] As described above, the circulation seat 2 disclosed in the embodiment of the present invention is an integrally formed one-piece structure so that the multiple missing corners 24 can be accurately made (that is, avoiding the tolerance caused by assembly of the existing center retainer), thereby facilitating each of the missing corners 24 and the corresponding mating block 301 to achieve high-precision mating.

[0045] like Figure 5 and Fig. 9 As shown, each of the dustproof parts 4 in this embodiment is an integrally formed one-piece elastic structure (such as a rubber part), and each of the dustproof parts 4 is snapped on the two end covers 30 at its two ends, so that the dustproof parts 4 can be installed on the two end covers 30 without any fixing components (such as screws), thereby achieving a quick disassembly and assembly effect. Among them, the mutual cooperation structure between each of the dustproof parts 4 and the two end covers 30 can be adjusted and changed according to design requirements, and is not limited to the illustration of this embodiment.

[0046] In more detail, the plurality of dustproof members 4 include an upper dustproof member 41 and two lower dustproof members 42. The upper dustproof member 41 includes a connecting section 411 and two floating dustproof sections 412 respectively connected to opposite sides of the connecting section 411. The connecting section 411 and the two floating dustproof sections 412 are both elongated and parallel to the sliding direction D, and the two floating dustproof sections 412 are respectively located on opposite sides of the connecting section 411 along a width direction W perpendicular to the sliding direction D.

[0047] Each of the floating dustproof sections 412 includes a bearing bar 4121 and an inner rib 4122 and an outer rib 4123 connected to the bearing bar 4121, and the bearing bar 4121, the inner rib 4122 and the outer rib 4123 of each of the floating dustproof sections 412 are all elongated and parallel to the sliding direction D, and the two outer ribs 4123 are respectively located at two opposite sides of the two inner ribs 4122, but the present invention is not limited thereto. For example, in other embodiments not described in the present invention, each of the floating dustproof sections 412 may also have only one of the inner rib 4122 and the outer rib 4123; that is, each of the floating dustproof sections 412 may have at least one rib 4122, 4123 according to design requirements.

[0048] It should be noted that the two floating dust-proof sections 412 are arranged in mirror symmetry with respect to the connecting section 411 in this embodiment, so for ease of understanding, only the structure of a single floating dust-proof section 412 is described below, but the present invention is not limited thereto. For example, in other embodiments not described in the present invention, the structures of the two floating dust-proof sections 412 may also be slightly different.

[0049] In this embodiment, the inner rib 4122 and the outer rib 4123 each include an inner side surface 41221, 41231 adjacent to each other (and parallel to the sliding direction D) and an outer side surface 41222, 41232 away from each other, and the inner rib 4122 and the outer rib 4123 each have substantially the same cross-section in a direction perpendicular to the sliding direction D, but the present invention is not limited thereto. For example, in other embodiments not described in the present invention, the inner rib 4122 (and / or the outer rib 4123) may also form slightly different cross-sections in a direction perpendicular to the sliding direction D.

[0050] In more detail, Figure 4 and Fig. 9As shown, a free end edge 41223 of the inner rib 4122 (e.g., the intersection of the inner side surface 41221 and the outer side surface 41222) abuts against the upper surface 101 of the track 10 and forms an inner interference distance between 0 mm and 0.05 mm, and a free end edge 41233 of the outer rib 4123 (e.g., the intersection of the inner side surface 41231 and the outer side surface 41232) abuts against the upper surface 101 of the track 10 and forms an outer interference distance, and the outer interference distance is greater than the inner interference distance. The free end edge 41223 of the inner rib 4122 and the free end edge 41233 of the outer rib 4123 are each arc-shaped and have a radius of curvature between 0.05 mm and 0.5 mm, and the outer interference distance is preferably between 0.05 mm and 0.1 mm, but not limited thereto.

[0051] Therefore, the floating dustproof segment 412 is designed with a relative structure between the inner rib 4122 and the outer rib 4123 so that the deformation of the inner rib 4122 relative to the track 10 can be minimized, thereby preventing dirt particles from getting stuck between the inner rib 4122 and the upper surface 101 of the track 10, so that the inner rib 4122 can maintain a gap-free contact with the upper surface 101 of the track 10, thereby enhancing its dustproof effect.

[0052] From another perspective, each of the bearing bars 4121 has two end portions E extending from the two end surfaces 11 (along the sliding direction D), and each of the end portions E has an inclined angle E1 away from the inner rib 4122 and the outer rib 4123, and has an inclined surface E11. The inclined surface E11 of each of the end portions E has an angle σ1 between 40 and 60 degrees with the width direction W.

[0053] In addition, each of the end portions E has a limit block E2 adjacent to the bevel E1; that is, in each of the end portions E, the limit block E2 is located between the bevel E1 and the inner rib 4122, and the limit block E2 is separated from the inner rib 4122 by a distance W1 of 0.7 mm to 1.0 mm along the width direction W.

[0054] In addition, each of the end caps 30 is formed with two fault tolerance grooves 302 on the surface adjacent to the corresponding end face 11. In each of the end caps 30, the notches 3021 of the two fault tolerance grooves 302 are away from each other along the width direction W, and each of the notches 3021 has a stop angle 3022 and a matching angle 3023, which face each other along a thickness direction H perpendicular to the sliding direction D and the width direction W.

[0055] Further, the bevels E1 of the four ends E of the upper dustproof piece 41 are respectively inserted into the four tolerance grooves 302 of the two end covers 30, and a tolerance gap G is left between each end E and the corresponding end cover 30, so that when the inner ribs 4122 and the outer ribs 4123 of each floating dustproof segment 412 are against the upper surface 101 of the track 10, the inclined surface E11 of each bevel E1 is against the matching angle 3023 of the corresponding tolerance groove 302, and each end E can be deformed toward the tolerance gap G, thereby absorbing the assembly tolerance between the components and maintaining the contact force of the upper dustproof piece 41 against the track 10.

[0056] In addition, in order to enable the cooperation between the upper dustproof part 41 and the two end covers 30 to more effectively absorb assembly tolerances and maintain the contact force, each end E and the corresponding fault-tolerant groove 302 in this embodiment preferably have at least some of the following features, but the present invention is not limited to this.

[0057] Specifically, the stop angle 3022 and the matching angle 3023 are both right angles, and the edge 3022a of the stop angle 3022 and the edge 3023a of the matching angle 3023 are arranged along the thickness direction H, the bevel angle E1 does not touch the stop angle 3022 (e.g., the bevel angle E1 and the stop angle 3022 are separated by a gap H1 between 0.05 mm and 0.5 mm along the thickness direction H), and the inclined surface E11 abuts against the edge 3023a of the matching angle 3023.

[0058] In addition, the tolerance gap G formed between each end E and the corresponding end cap 30 has a distance G1 between 0.05 mm and 0.5 mm in the thickness direction H, and a distance G2 between 0.05 mm and 0.5 mm in the width direction W. The limit block E2 is spaced from the lower edge E112 of the inclined surface E11 adjacent to the stop angle 3022 by a distance W2 of 0.2 mm to 0.5 mm along the width direction W.

[0059] It should be noted that, although the upper dustproof member 41 is described below in conjunction with multiple components, the present invention is not limited thereto. For example, in other embodiments not described in the present invention, the upper dustproof member 41 may also be used alone (e.g., sold) or used in conjunction with other components.

[0060] The above is a description of the upper dustproof member 41 in this embodiment and its relationship with the two end covers 30. Next, the two lower dustproof members 42 in this embodiment are described. Figure 4 and Figure 6 As shown, the two lower dust-proof members 42 are respectively in contact with the two side surfaces 102 of the rail 10 .

[0061] It should be noted that the two lower dust-proof members 42 are arranged in mirror symmetry with respect to the rail 10 in this embodiment, so for ease of understanding, only the structure of a single lower dust-proof member 42 is described below, but the present invention is not limited thereto. For example, in other embodiments not described in the present invention, the structures of the two lower dust-proof members 42 may also be slightly different.

[0062] In more detail, the lower dustproof member 42 includes a mounting section 421 and an upper rib 422 and a lower rib 423 connected to the mounting section 421. The mounting section 421, the upper rib 422 and the lower rib 423 are all elongated and parallel to the sliding direction D (that is, the mounting section 421, the upper rib 422 and the lower rib 423 are parallel to each other).

[0063] In this embodiment, the upper rib 422 and the lower rib 423 each have substantially the same cross-section in a direction perpendicular to the sliding direction D, but the present invention is not limited thereto. For example, in other embodiments not described in the present invention, the upper rib 422 (and / or the lower rib 423) may also form slightly different cross-sections in a direction perpendicular to the sliding direction D.

[0064] In more detail, in each of the lower dustproof parts 42, a free end edge of the upper rib 422 abuts against the corresponding side surface 102 of the track 10 and forms an upper interference distance between 0 mm and 0.05 mm, and a free end edge of the lower rib 423 abuts against the corresponding side surface 102 of the track 10 and forms a lower interference distance between 0 mm and 0.05 mm.

[0065] Therefore, the lower dustproof part 42 is designed with a relative structure between the upper rib 422 and the lower rib 423 so that the deformation of the upper rib 422 and the lower rib 423 relative to the track 10 can be minimized, thereby preventing dirty particles from getting stuck between the upper rib 422 (or the lower rib 423) and the side surface 102 of the track 10, so that the inner rib 4122 can maintain a gap-free contact with the side surface 102 of the track 10, thereby enhancing its dustproof effect.

[0066] [Example 2]

[0067] See also Fig.10As shown in , it is the second embodiment of the present invention. Since this embodiment is similar to the above-mentioned first embodiment, the similarities between the two embodiments will not be repeated, and the differences between this embodiment and the above-mentioned first embodiment are roughly described as follows:

[0068] In this embodiment, in each of the end portions E and the corresponding error-tolerant groove 302, the stop angle 3022 is in a right angle shape, the matching angle 3023 is in an oblique angle shape and has a guiding inclined surface 3023b, and the edge 3022a of the stop angle 3022 corresponds to the guiding inclined surface 3023b along the thickness direction H. In other words, there is no inclined surface corresponding to the stop angle 3022 along the thickness direction H, and its function is different from the guiding inclined surface 3023b referred to in this embodiment.

[0069] In addition, in each of the end portions E and the corresponding fault-tolerant groove 302, the angle σ1 between the inclined surface E11 and the width direction W is preferably greater than the angle σ2 between the guide inclined surface 3023b and the width direction W, and the upper edge E111 of the inclined surface E11 away from the stop angle 3022 abuts against the guide inclined surface 3023b.

[0070] Therefore, the upper dustproof member 41 and the two end covers 30 can be adapted to different requirements by adjusting the structure of the matching angle 3023 of the fault-tolerant groove 302 (for example, the matching angle 3023 is a right angle or an oblique angle).

[0071] [Technical Effects of Embodiments of the Invention]

[0072] To summarize, the linear slide rail and the upper dustproof part thereof disclosed in the embodiment of the present invention are configured such that each end portion is deformed toward the fault-tolerant gap by matching the structure of each end portion with the corresponding fault-tolerant groove, thereby absorbing the assembly tolerance between components and maintaining the contact force of the upper dustproof part against the rail.

[0073] In addition, the linear slide rail disclosed in the embodiment of the present invention, through the structural design of the middle retaining portion (such as: the middle retaining portion is a double-step structure, and the distance between the two long sides of the connecting strip gradually increases in the direction away from the limit strip), so that the circulation seat can realize an integrally formed one-piece structure, thereby effectively avoiding the problems existing in the middle retainer of the existing linear slide rail (such as: positioning accuracy requirements, assembly tolerances and stress concentration caused by rotation).

[0074] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Therefore, all equivalent technical changes made using the description and illustrations of the present invention are included in the patent scope of the present invention.

Claims

1. A linear slide rail, characterized in that: The linear slide rail comprises: A track having two side surfaces located at opposite sides and an upper surface connected to the two side surfaces; A sliding module is slidably disposed on the track along a sliding direction, and the sliding module comprises: A slider comprises a base and two side wings extending from the base respectively. and the inner edges of the two side wing portions face the two side surfaces respectively; Two circulation seats, respectively installed on the two side wings and corresponding to the two side surfaces respectively; and The dustproof parts include: a connecting section, arranged corresponding to the base of the slider; and Two floating dustproof sections are respectively connected to opposite sides of the connecting section, and each of the floating dustproof sections has a bearing bar and at least one rib connected to the bearing bar; wherein each of the bearing bars has two ends extending from two end surfaces of the slider, respectively, and each of the ends has an oblique angle away from at least one of the ribs; and Two end covers are respectively mounted on the two end faces of the slider, and the two end covers are slidably arranged on the track; wherein each of the end covers is concavely formed with two fault-tolerant grooves on the surface adjacent to the corresponding end face; in each of the end covers, the notches of the two fault-tolerant grooves are away from each other along a width direction perpendicular to the sliding direction, and each of the notches has a stop angle and a matching angle, and the stop angle and the matching angle face each other along a thickness direction perpendicular to the sliding direction and perpendicular to the width direction; Among them, the bevels of the four ends are respectively inserted into the four fault-tolerant grooves of the two end covers, and a fault-tolerant gap is left between each end and the corresponding end cover, so that when at least one rib of each floating dust-proof segment abuts against the upper surface of the track, the inclined surface of each bevel abuts against the matching angle of the corresponding fault-tolerant groove, and each end can be deformed toward the fault-tolerant gap.

2. The linear guide rail according to claim 1, characterized in that: In each of the end portions and the corresponding fault-tolerant grooves, an angle between the inclined surface and the width direction is between 40 degrees and 60 degrees, and the inclined angle does not touch the stop angle.

3. The linear guide rail according to claim 2, characterized in that: In each of the end portions and the corresponding error-tolerant grooves, the bevel angle and the stop angle are separated by a gap ranging from 0.05 mm to 0.5 mm along the thickness direction.

4. The linear guide rail according to claim 1, characterized in that: In each of the end portions and the corresponding tolerance grooves, the stop angle and the matching angle are both right angles, and the edge of the stop angle and the edge of the matching angle are arranged along the thickness direction, and the inclined surface abuts against the edge of the matching angle.

5. The linear guide rail according to claim 1, characterized in that: In each of the end portions and the corresponding tolerance grooves, the stop angle is a right angle, the matching angle is an oblique angle and has a guide slope, and the edge of the stop angle corresponds to the guide slope along the thickness direction, the angle between the slope and the width direction is greater than the angle between the guide slope and the width direction, and the upper edge of the slope away from the stop angle abuts against the guide slope.

6. The linear guide rail according to claim 1, characterized in that: The tolerance gap formed between each end portion and the corresponding end cap is between 0.05 mm and 0.5 mm in the thickness direction.

7. The linear guide rail according to claim 1, characterized in that: The tolerance gap formed between each end portion and the corresponding end cap is between 0.05 mm and 0.5 mm in the width direction.

8. The linear guide rail according to claim 1, characterized in that: Each of the end portions has a limit block adjacent to the bevel; in each of the end portions and the corresponding fault-tolerant groove, the limit block is separated from at least one of the ribs by a distance of 0.7 mm to 1.0 mm along the width direction, and the limit block is separated from the lower edge of the inclined surface adjacent to the stop angle by a distance of 0.2 mm to 0.5 mm along the width direction.

9. The linear guide rail according to claim 1, characterized in that: At least one of the ribs includes a free end edge abutting against the upper surface, and the free end edge is arc-shaped and has a curvature radius of 0.05 mm to 0.5 mm.

10. An upper dustproof part of a linear slide rail, characterized in that: The upper dustproof part of the linear guide rail comprises: a connecting section; and Two floating dustproof sections are respectively connected to opposite sides of the connecting section, and each of the floating dustproof sections has a bearing bar and at least one rib connected to the bearing bar; wherein each of the bearing bars has two end portions extending from two end faces respectively, and each of the end portions has an oblique angle away from at least one of the ribs; wherein, when the oblique angles of the four end portions are used to be respectively inserted into the four fault-tolerant grooves of the two end covers, a fault-tolerant gap is left between each of the end portions and the corresponding end cover, so that the inclined surface of each oblique angle can abut against the corresponding fault-tolerant groove, and each of the end portions can be deformed toward the fault-tolerant gap.

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