Guide rail bracket and linear guide rail pair

Abstract

The utility model discloses a guide rail bracket and a linear guide rail pair, the guide rail bracket comprises a first gyrator, a second gyrator, a first holding part and a second holding part, and the first gyrator, the second gyrator, the first holding part and the second holding part are of an integrated structure. The first gyrator and the second gyrator are arranged in a first direction, the first holding part is connected with the middle area of the first gyrator and the middle area of the second gyrator, and the second holding part is connected with the middle area of the first gyrator and the middle area of the second gyrator. The guide rail bracket is of an integrated structure, and the number of parts of the guide rail bracket is reduced, so that the accumulative error during assembly of the guide rail bracket is reduced, the assembly precision of the guide rail bracket and the sliding block main body is improved, and the influence of the size precision of the guide rail bracket on the linear guide rail pair is reduced; meanwhile, the guide rail frame is integrally formed, so that the overall strength and rigidity of the guide rail frame are improved, and the risk of deformation or damage of the guide rail frame is reduced.

Description

Technical Field

[0001] The present application relates to the field of linear transmission technology, and in particular to a guide rail frame and a linear guide pair. Background Art

[0002] The linear guide pair is a motion mechanism including a guide rail, a ball and a slider. A guide rail frame is installed in the slider to form a channel for the ball to move in the slider body and between the slider body and the guide rail, so that the slider and the guide rail are movably connected.

[0003] Traditional guide rail frames are composed of multiple parts, and during the assembly process, multiple parts are assembled. Since each part will have errors during the processing and manufacturing process, after the guide rail frame is assembled, the errors of different parts are superimposed, which will seriously affect the dimensional accuracy and assembly accuracy of the guide rail frame, and affect the relative movement between the slider and the guide rail. Utility Model Content

[0004] In view of this, the present application provides a guide rail frame to improve its dimensional accuracy and reduce the influence of its dimensional accuracy on the linear guide pair.

[0005] The first aspect of the present application provides a guide rail frame, the guide rail frame includes a first rotator, a second rotator, a first retaining portion and a second retaining portion, the first rotator, the second rotator, the first retaining portion and the second retaining portion are an integrated structure. The first rotator and the second rotator are arranged along a first direction, the first retaining portion connects the middle area of ​​the first rotator and the middle area of ​​the second rotator, and the second retaining portion connects the middle area of ​​the first rotator and the middle area of ​​the second rotator.

[0006] In the above-mentioned guide rail frame, the first rotator, the second rotator, the first retaining portion and the second retaining portion are an integrated structure, which reduces the number of parts of the guide rail frame, thereby reducing the cumulative error during the assembly of the guide rail frame, which is beneficial to improving the assembly accuracy of the guide rail frame and the slider body, and reducing the influence of the dimensional accuracy of the guide rail frame on the linear guide pair; at the same time, by designing the guide rail frame as an integrated unit, it is also beneficial to improve the overall strength and rigidity of the guide rail frame, and reduce the risk of deformation or damage of the guide rail frame.

[0007] In some embodiments, the first rotator includes a first steering portion, a second steering portion, and a first connecting member, the first steering portion and the second steering portion are arranged along the second direction, the first connecting member connects the first steering portion and the second steering portion, and the second direction is perpendicular to the first direction. The second rotator includes a third steering portion, a fourth steering portion, and a second connecting member, the third steering portion and the fourth steering portion are arranged along the second direction, and the second connecting member connects the third steering portion and the fourth steering portion. The first retaining portion connects the middle area of ​​the first steering portion and the middle area of ​​the third steering portion, and the second retaining portion connects the middle area of ​​the second steering portion and the middle area of ​​the fourth steering portion.

[0008] In some embodiments, the first rotator, the second rotator, the first retaining portion and the second retaining portion are an integrated structure, which is beneficial to reducing the cumulative error during the assembly of the guide rail frame, improving the assembly accuracy of the guide rail frame and the slider body, reducing the impact of the dimensional accuracy of the guide rail frame on the linear guide pair, and also beneficial to improving the overall strength and rigidity of the guide rail frame, and reducing the risk of deformation or damage of the guide rail frame.

[0009] In some embodiments, the guide rail frame further includes a bracket, which connects the first connecting member and the second connecting member, thereby facilitating improving the overall strength and rigidity of the guide rail frame and reducing the risk of deformation or damage of the guide rail frame.

[0010] In some embodiments, the bracket, the first rotator, the second rotator, the first retaining portion and the second retaining portion are an integrated structure, which is beneficial to reduce the cumulative error during the assembly of the guide rail frame, improve the assembly accuracy of the guide rail frame and the slider body, reduce the impact of the dimensional accuracy of the guide rail frame on the linear guide pair, and also help to improve the overall strength and rigidity of the guide rail frame, and reduce the risk of deformation or damage to the guide rail frame.

[0011] In some embodiments, the first connecting member includes a first section, a second section, and a third section connected in sequence along the second direction, the first section is connected to the first turning portion, the second section is connected to the bracket, and the third section is connected to the second turning portion.

[0012] In some embodiments, there is a gap between the bracket and the first turning portion, and there is a gap between the bracket and the second turning portion, which is beneficial to form a gap between the bracket and the first turning portion, and between the bracket and the second turning portion, so as to facilitate avoiding the balls, and facilitate the balls to enter the slider and the guide rail from the circulation channel, or facilitate the balls to enter the circulation channel from the slider and the guide rail. At the same time, it is also beneficial to further reduce the structural stiffness of the guide rail frame, facilitate the deformation of the guide rail frame to be installed on the slider body, and facilitate assembly.

[0013] In some embodiments, the second section includes at least two first connection parts, and the at least two first connection parts are arranged in a row along the second direction. Along the second direction, a gap is provided between any two adjacent first connection parts, which is beneficial to further reduce the structural rigidity of the guide rail frame, facilitate deformation of the guide rail frame to be installed on the slider body, and facilitate assembly.

[0014] In some embodiments, the second connecting member includes a fourth section, a fifth section, and a sixth section connected in sequence along the second direction, the fourth section is connected to the third turning portion, the fifth section is connected to the bracket, and the sixth section is connected to the fourth turning portion.

[0015] In some embodiments, there is a gap between the bracket and the second turning portion, and there is a gap between the bracket and the fourth turning portion, which is conducive to forming a gap between the bracket and the second turning portion, and between the bracket and the fourth turning portion, so as to facilitate avoiding the balls, and facilitate the balls to enter the slider and the guide rail from the circulation channel, or facilitate the balls to enter the circulation channel from the slider and the guide rail. At the same time, it is also conducive to further reducing the structural stiffness of the guide rail frame, making it easier to deform the guide rail frame to be installed on the slider body, which is conducive to assembly.

[0016] In some embodiments, the fifth section includes at least two second connection parts, and the at least two second connection parts are arranged in a row along the second direction. Along the second direction, a gap is provided between any two adjacent second connection parts, which is beneficial to further reduce the structural rigidity of the guide rail frame, facilitate deformation of the guide rail frame to be installed on the slider body, and facilitate assembly.

[0017] In some embodiments, the guide rail frame further includes a third retaining portion and a fourth retaining portion, the third retaining portion connecting an end of the first turning portion away from the first connecting member and an end of the third turning portion away from the second connecting member, and the fourth retaining portion connecting an end of the second turning portion away from the first connecting member and an end of the fourth turning portion away from the second connecting member. The third retaining portion cooperates with the first retaining portion to form a retaining structure for keeping the ball running, and the fourth retaining portion cooperates with the second retaining portion to form a retaining structure for keeping the ball running, so that the ball rolls in the circulation channel.

[0018] In some embodiments, the guide rail frame further includes a first end cap and a second end cap. The first end cap is disposed on a side of the first rotator away from the second rotator, the first end cap is snap-fitted with the third retaining portion, and the first end cap is snap-fitted with the fourth retaining portion. The second end cap is disposed on a side of the second rotator away from the first rotator, the second end cap is snap-fitted with the third retaining portion, and the second end cap is snap-fitted with the fourth retaining portion. The first end cap and the second end cap can block and limit the balls in the circulation channel to prevent the balls from escaping from the circulation channel.

[0019] In some embodiments, the first rotator and the second rotator are both provided with a steering groove and a guide portion, the guide portion is provided with a through hole, and the through hole is connected to the steering groove. The steering groove is used for the ball to be steered so that the ball can continuously roll in the circulation channel; at the same time, by providing the guide portion, it is convenient to guide the ball to move between the steering groove and the circulation channel.

[0020] A second aspect of the present application provides a linear guide pair, which includes a guide rail, a slider and a ball. The slider includes a guide rail frame in any one of the aforementioned embodiments, and the ball is movably connected to the guide rail and the guide rail frame.

[0021] In the above-mentioned linear guide pair, the one-piece molding design of the guide frame of the slider reduces the number of parts of the guide frame, thereby reducing the cumulative error during the assembly of the guide frame, which is beneficial to improving the assembly accuracy of the guide frame and the slider body, and reducing the influence of the dimensional accuracy of the guide frame on the linear guide pair; at the same time, by molding the guide frame in one piece, it is also beneficial to improve the overall strength and rigidity of the guide frame, reduce the risk of deformation or damage of the guide frame, and reduce the influence of deformation or damage of the guide frame on the linear guide pair.

[0022] In some embodiments, the slider includes a slider body, the slider body is connected to the first rotator and the second rotator, the slider body is provided with a mounting groove, and the first retaining portion and the second retaining portion are provided in the mounting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a linear guide pair provided in one embodiment of the present application.

[0024] Figure 2 for Figure 1 Schematic diagram of the exploded view of the linear guide pair shown.

[0025] Figure 3 A schematic diagram of the structure of a guide rail frame provided in accordance with an embodiment of the present invention.

[0026] Figure 4 for Figure 3 A schematic structural diagram of the guide rail frame from another perspective is shown.

[0027] Figure 5 A schematic diagram of the structure of a guide rail frame provided in accordance with an embodiment of the present invention.

[0028] Figure 6 for Figure 5 A schematic structural diagram of the guide rail frame from another perspective is shown.

[0029] Figure 7 for Figure 5 A schematic structural diagram of the guide rail frame from another perspective is shown.

[0030] Figure 8 for Figure 5 A schematic structural diagram of the guide rail frame from another perspective is shown.

[0031] Reference numerals

[0032] Guide rail rack 100

[0033] The first gyrator 10

[0034] The first turning portion 11

[0035] Second turning portion 12

[0036] Arc convex 13

[0037] Avoidance 131

[0038] Steering trough 14

[0039] Guide 15

[0040] Through hole 151

[0041] Second gyrator 20

[0042] The third turning portion 21

[0043] Fourth turning portion 22

[0044] Bracket 30

[0045] Reinforcement strip 32

[0046] First connecting member 40

[0047] 41

[0048] Section 242

[0049] First connection portion 421

[0050] Section 343

[0051] First end cap 50

[0052] Second end cover 60

[0053] The first holding portion 71

[0054] The second holding portion 72

[0055] The third holding portion 81

[0056] Fourth holding portion 82

[0057] The second connecting member 90

[0058] Section 4 91

[0059] Section 5 92

[0060] Second connection portion 921

[0061] Section 6 93

[0062] Guide Rail 200

[0063] Slider 300

[0064] Slider body 3001

[0065] Mounting groove 300a

[0066] First Wall 301

[0067] Second wall 302

[0068] The third wall 303

[0069] Circulation channel 304

[0070] Ball 400

[0071] Linear guide pair 1000

[0072] First direction X

[0073] Second direction Y

[0074] The third direction Z DETAILED DESCRIPTION

[0075] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0076] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The term "bottom" and similar expressions used in this article are for illustrative purposes only.

[0077] Unless otherwise specified, the term "plurality" as used herein means two or more than two.

[0078] The terms "first", "second", etc. are only used to distinguish different objects and shall not be understood as indicating or implying relative importance or implying the quantity, specific order or primary and secondary relationship of the technical features indicated.

[0079] The term "perpendicular" is used to describe an ideal state between two components. In actual production or use, the two components may be in a state that is approximately perpendicular to each other.

[0080] It should be noted that when a parameter is greater than, equal to, or less than a certain endpoint value, it should be understood that the endpoint value is allowed to have a tolerance of ±5%.

[0081] It should be recognized that the dimensions of the layers, regions, films, plates, blocks, columns, convex parts, concave parts, etc. shown in the drawings are given for better understanding and more convenient description, and the present application is not limited to the dimensions shown in the drawings. In order to make the present application clear, elements not related to the description are omitted from the details of this specification.

[0082] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0083] The present application discloses a guide rail frame, which includes a first rotator, a second rotator, a first retaining portion and a second retaining portion, wherein the first rotator, the second rotator, the first retaining portion and the second retaining portion are an integrated structure. The first rotator and the second rotator are arranged along a first direction, the first retaining portion connects the middle area of ​​the first rotator and the middle area of ​​the second rotator, and the second retaining portion connects the middle area of ​​the first rotator and the middle area of ​​the second rotator.

[0084] In the above-mentioned guide rail frame, the first rotator, the second rotator, the first retaining portion and the second retaining portion are an integrated structure, which reduces the number of parts of the guide rail frame, thereby reducing the cumulative error during the assembly of the guide rail frame, which is beneficial to improving the assembly accuracy of the guide rail frame and the slider body, and reducing the influence of the dimensional accuracy of the guide rail frame on the linear guide pair; at the same time, by forming the guide rail frame as an integral part, it is also beneficial to improve the overall strength and rigidity of the guide rail frame, and reduce the risk of deformation or damage of the guide rail frame.

[0085] Some embodiments of the present application will be described below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0086] See also Figure 1 and Figure 2 The embodiment of the present application provides a linear guide pair 1000, which includes a guide rail 200, a slider 300 and a plurality of balls 400. The slider 300 is sleeved on the guide rail 200, and the plurality of balls 400 are movably cooperated with the slider 300 and the guide rail 200, so that the slider 300 can move along the guide rail 200.

[0087] The slider 300 includes a slider body 3001 and a guide rail frame 100. The slider body 3001 is provided with a mounting groove 300a. The guide rail frame 100 and a plurality of balls 400 are arranged in the mounting groove 300a. The guide rail frame 100 is sleeved on the guide rail 200. Some of the balls 400 are located between the guide rail frame 100 and the guide rail 200, and contact and connect the guide rail frame 100 and the guide rail 200. The plurality of balls 400 contact the guide rail frame 100 and the guide rail 200, which facilitates the movement of the slider 300 relative to the guide rail 200.

[0088] It can be understood that in order to make the drawings clearer, some balls 400 are omitted in the drawings.

[0089] The extension direction of the guide rail 200 and the length direction of the slider body 3001 are defined as the first direction X, the width direction of the slider body 3001 is defined as the second direction Y, and the height direction of the slider body 3001 is defined as the third direction Z. The first direction X is perpendicular to the second direction Y and the third direction Z.

[0090] The slider body 3001 includes a first wall 301, a second wall 302, and a third wall 303 connected in sequence, and the first wall 301, the second wall 302, and the third wall 303 are arranged to form a mounting groove 300a, wherein the second wall 302 is a side wall of the bottom of the mounting groove 300a. The first wall 301 is located on one side of the guide rail 200 in the second direction Y, the third wall 303 is located on the other side of the guide rail 200 in the second direction Y, and the second wall 302 is located on one side of the guide rail 200 in the third direction Z, and there is a gap between the first wall 301, the second wall 302, and the third wall 303 and the guide rail 200.

[0091] The slider body 3001 is provided with a plurality of circulation channels 304 extending along the first direction X, and the circulation channels 304 are used to accommodate some of the balls 400. When the slider body 3001 slides along the guide rail 200, the balls 400 that are movably matched with the guide rail 200 and the slider 300 move into the circulation channel 304 through the opening at one end of the circulation channel 304, and move between the slider 300 and the guide rail 200 through the opening at the other end of the circulation channel 304 to contact the guide rail frame 100 and the guide rail 200.

[0092] See also Figures 2 to 4 In some embodiments, the guide rail frame 100 includes a first rotator 10, a second rotator 20, a first holding portion 71, and a second holding portion 72. The first rotator 10, the second rotator 20, the first holding portion 71, and the second holding portion 72 are an integrated structure. The first rotator 10 and the second rotator 20 are arranged along the first direction X, the first holding portion 71 connects the first rotator 10 and the second rotator 20, and the second holding portion 72 connects the first rotator 10 and the second rotator 20.

[0093] In the related art, due to processing errors caused by independent injection molding of various parts of the guide rail frame 100, after assembling multiple parts with the slider body 3001, the cumulative error is large and the assembly accuracy is low, resulting in poor movement smoothness of the ball 400.

[0094] The guide rail frame 100 of the present embodiment is an integrated structure with the first rotator 10, the second rotator 20, the first retaining portion 71 and the second retaining portion 72, which reduces the number of parts of the guide rail frame 100, thereby reducing the cumulative error during the assembly of the guide rail frame 100, which is beneficial to improving the assembly accuracy of the guide rail frame 100 and the slider body 3001, and reducing the influence of the dimensional accuracy of the guide rail frame 100 on the linear guide pair 1000; at the same time, by designing the guide rail frame 100 as an integrated unit, it is also beneficial to improve the overall strength and rigidity of the guide rail frame 100, reduce the risk of deformation or damage of the guide rail frame 100, and reduce the influence of deformation or damage of the guide rail frame 100 on the linear guide pair 1000.

[0095] In some embodiments, the material of the guide rail frame 100 may be engineering plastics such as polyoxymethylene (POM), polyamide (PA), or polyetheretherketone (PEEK).

[0096] In some embodiments, the guide rail frame 100 may be integrally formed by injection molding using an injection molding machine or by 3D printing, which is beneficial for improving the processing and manufacturing efficiency of the guide rail frame 100 and improving the dimensional accuracy of the guide rail frame 100 .

[0097] In some embodiments, the first rotator 10 and the second rotator 20 are installed outside the installation groove 300 a and connected to the slider body 3001 , so as to facilitate the installation of the guide rail frame 100 on the slider body 3001 .

[0098] In some embodiments, along the second direction Y, the slider body 3001 is provided with a circulation channel 304 on a side of the first wall 301 facing away from the third wall 303 and on a side of the third wall 303 facing away from the first wall 301 .

[0099] The first rotator 10 includes a first steering portion 11 and a second steering portion 12 for steering the ball 400. The first steering portion 11 and the second steering portion 12 are arranged along the second direction Y. The first steering portion 11 is used to communicate with the circulation channel 304 on the side of the first wall 301 away from the third wall 303, and the second steering portion 12 is used to communicate with the circulation channel 304 on the side of the third wall 303 away from the first wall 301.

[0100] The second rotator 20 includes a third steering portion 21 and a fourth steering portion 22 for steering the ball 400. The third steering portion 21 and the fourth steering portion 22 are arranged along the second direction Y. The third steering portion 21 is used to communicate with the circulation channel 304 on the side of the first wall 301 away from the third wall 303, and the fourth steering portion 22 is used to communicate with the circulation channel 304 on the side of the third wall 303 away from the first wall 301.

[0101] After the guide rail frame 100 is installed on the slider body 3001, channels for the ball 400 to turn can be formed between the first turning portion 11 and the slider body 3001, between the second turning portion 12 and the slider body 3001, between the third turning portion 21 and the slider body 3001, and between the fourth turning portion 22 and the slider body 3001, so that the ball 400 can circulate and roll in the slider 300 and between the guide rail frame 100 and the guide rail 200, which is beneficial to the relative movement between the slider 300 and the guide rail 200.

[0102] In some embodiments, a plurality of arc-shaped protrusions 13 are provided on the first rotator 10 and the second rotator 20, and a steering groove 14 is provided between two adjacent arc-shaped protrusions 13. The steering groove 14 is used for steering the ball 400, and the arc-shaped protrusion 13 serves to limit and guide the ball 400.

[0103] In some embodiments, a plurality of guide portions 15 are provided on the first rotator 10 and the second rotator 20, the guide portions 15 are connected to the slider body 3001, and the guide portions 15 are provided with through holes 151, and the through holes 151 are connected to the steering groove 14 and the circulation channel 304. The guide portions 15 are provided to facilitate the movement of the guide balls 400 between the steering groove 14 and the circulation channel 304.

[0104] In some embodiments, the guide rail frame 100 further includes a first end cover 50 and a second end cover 60 .

[0105] Along the first direction X, the first end cover 50 is arranged on the side of the first rotor 10 away from the second rotor 20. The first end cover 50 is connected to the slider body 3001. The first end cover 50 can limit the ball 400 in the steering groove 14 to prevent the ball 400 from escaping from the steering groove 14.

[0106] Along the first direction X, the second end cover 60 is arranged on the side of the second rotor 20 away from the first rotor 10, and the second end cover 60 is connected to the slider body 3001. The second end cover 60 can limit the ball 400 in the steering groove 14 to prevent the ball 400 from escaping from the steering groove 14.

[0107] In some embodiments, the first end cover 50 and the second end cover 60 are both provided with an oil circuit. By pouring lubricating oil into the oil circuit, the lubricating oil can enter between the first end cover 50 and the first rotor 10 or between the second end cover 60 and the second rotor 20, thereby playing a lubricating role and facilitating the movement of the slider 300 relative to the guide rail 200.

[0108] In some embodiments, an avoidance portion 131 is provided on the arc-shaped profile of the arc-shaped protrusion 13. The avoidance portion 131 allows a gap to exist between the arc-shaped protrusion 13 of the first rotator 10 and the first end cover 50, and allows a gap to exist between the arc-shaped protrusion 13 of the second rotator 20 and the second end cover 60, which is conducive to allowing the lubricating oil to enter different circulation channels 304 through the gap, thereby improving the oil supply effect.

[0109] In some embodiments, along the arc profile of the arc-shaped protrusion 13, the diameter of the arc-shaped protrusion 13 is D1, and the height of the arc-shaped protrusion 13 is D2, satisfying 0.7D1<D2<D1. When the height of the arc-shaped protrusion 13 and the setting of the avoidance portion 131 meet this condition, it is beneficial to increase the gap for the passage of lubricating oil, and it is also beneficial to enhance the guiding and limiting effect of the arc-shaped protrusion 13 on the ball 400, thereby improving the smoothness of the movement of the ball 400, and further improving the operation accuracy of the linear guide pair 1000.

[0110] In some embodiments, the avoidance portion 131 may be flattened by machining.

[0111] In some embodiments, the first retaining portion 71 and the second retaining portion 72 are installed in the mounting groove 300 a and arranged along the second direction Y.

[0112] In some embodiments, along the first direction X, one end of the first retaining portion 71 is connected to the first rotator 10, the other end of the first retaining portion 71 is connected to the second rotator 20, one end of the second retaining portion 72 is connected to the first rotator 10, and the other end of the second retaining portion 72 is connected to the second rotator 20. The first retaining portion 71 cooperates with the first slideway 311 to form a retaining structure for keeping the ball 400 running, and the second retaining portion 72 cooperates with the second slideway 312 to form a retaining structure for keeping the ball 400 running, so that a plurality of ball 400 circulation structures are formed between the slider body 3001 and the guide rail 200 along the second direction Y.

[0113] In some embodiments, after the guide rail frame 100 is installed on the slider body 3001, the first retaining portion 71 and the second retaining portion 72 form two channels arranged along the second direction Y in the slider 300. The two channels can be used to accommodate the ball 400 and allow the ball 400 to move, thereby improving the stability of the relative movement between the slider 300 and the guide rail 200 and reducing the friction loss of the relative movement between the slider 300 and the guide rail 200.

[0114] In one embodiment, one end of the first retaining portion 71 is connected to the middle area of ​​the first turning portion 11 along the third direction Z, and the other end of the first retaining portion 71 is connected to the middle area of ​​the third turning portion 21 along the third direction Z.

[0115] In one embodiment, one end of the second retaining portion 72 is connected to the middle area of ​​the second turning portion 12 along the third direction Z, and the other end of the second retaining portion 72 is connected to the middle area of ​​the fourth turning portion 22 along the third direction Z.

[0116] In some embodiments, the first rotator 10 also includes a first connecting member 40, which connects the first steering portion 11 and the second steering portion 12, which is beneficial to improving the structural rigidity of the guide rail frame 100, reducing the risk of deformation of the guide rail frame 100, and reducing the impact of the deformation of the guide rail frame 100 on the linear guide pair 1000.

[0117] In one embodiment, the first connecting member 40 connects an end portion of the first turning portion 11 along the third direction Z and an end portion of the second turning portion 12 along the third direction Z.

[0118] In some embodiments, the second rotator 20 also includes a second connecting member 90, which connects the third steering portion 21 and the fourth steering portion 22, which is beneficial to improving the structural rigidity of the guide rail frame 100, reducing the risk of deformation of the guide rail frame 100, and reducing the impact of the deformation of the guide rail frame 100 on the linear guide pair 1000.

[0119] In one embodiment, the second connecting member 90 connects an end portion of the third turning portion 21 along the third direction Z and an end portion of the fourth turning portion 22 along the third direction Z.

[0120] See also Figure 2 , Figures 5 to 7 In some embodiments, the guide rail frame 100 further includes a bracket 30, and the bracket 30 connects the first connecting member 40 and the second connecting member 90. By providing the bracket 30, it is beneficial to improve the structural rigidity of the guide rail frame 100, reduce the influence of the deformation of the guide rail frame 100 on its dimensional accuracy, and improve the dimensional accuracy of the guide rail frame 100; at the same time, the bracket 30 can also cooperate with the first retaining portion 71 and the second retaining portion 72 to form a structure for retaining the ball 400, thereby improving the stability of the movement of the ball 400.

[0121] In some embodiments, the bracket 30, the first rotator 10, the second rotator 20, the first retaining portion 71 and the second retaining portion 72 are an integrated structure, which is beneficial to reduce the number of parts of the guide rail frame 100, thereby reducing the cumulative error during the assembly of the guide rail frame 100, improving the assembly accuracy of the guide rail frame 100 and the slider body 3001, and reducing the influence of the dimensional accuracy of the guide rail frame 100 on the linear guide pair 1000.

[0122] In some embodiments, the bracket 30 and the first connecting member 40 and the second connecting member 90 may also be separate bodies and connected together by assembly.

[0123] In one embodiment, along the first direction X, the bracket 30 is disposed between the first connecting member 40 and the second connecting member 90 , one end of the bracket 30 is connected to the first connecting member 40 , and the other end of the bracket 30 is connected to the second connecting member 90 .

[0124] In some embodiments, the bracket 30 contacts the ball 400 on both sides opposite to each other in the second direction Y so as to be movably matched with the ball 400, and the first rotator 10 and the second rotator 20 are used to turn the ball 400. When the slider 300 moves relative to the guide rail 200, the ball 400 movably matched with the bracket 30 and the guide rail 200 enters the circulation channel 304 after turning through the first rotator 10, and the ball 400 in the circulation channel 304 enters between the slider body 3001 and the guide rail 200 after turning through the second rotator 20, and movably matches with the bracket 30 and the guide rail 200; or, when the slider 300 moves relative to the guide rail 200, the ball 400 movably matched with the bracket 30 and the guide rail 200 enters the circulation channel 304 after turning through the second rotator 20, and the ball 400 in the circulation channel 304 enters between the slider body 3001 and the guide rail 200 after turning through the first rotator 10, and movably matches with the bracket 30 and the guide rail 200.

[0125] See also Figure 2 , Figures 5 to 8 In some embodiments, the bracket 30 also includes a reinforcement strip 32, which is disposed on the side of the bracket 30, which is beneficial to enhancing the structural rigidity of the bracket 30 and reducing the risk of deformation of the bracket 30, thereby helping to improve the stability of the operation of the ball 400 and reduce the risk of the ball 400 bouncing; and, the reinforcement strip 32 is disposed on the side of the bracket 30 away from the guide rail 200, which is also beneficial to reducing its influence on the relative movement between the slider 300 and the guide rail 200.

[0126] Research has found that when the bracket 30 is directly connected to the first rotator 10 and formed as one piece, the first rotator 10 and the second rotator 20 need to be arranged at both ends of the slider body 3001 at the same time. In order to maintain good assembly accuracy, the distance between the installed first rotator 10 and the second rotator 20 in the first direction X needs to be kept basically equal to the length of the slider body 3001 in the first direction X. This will make the installation of the guide rail frame 100 more challenging.

[0127] In this embodiment, the first rotator 10 is indirectly connected to the bracket 30 through the first connecting member 40, and the second rotator 20 is indirectly connected to the bracket 30 through the second connecting member 90 and is formed as one piece, so that the first rotator 10 and the bracket 30 can move relative to each other through the elastic deformation of the first connecting member 40 during installation, and the second rotator 20 and the bracket 30 can move relative to each other through the elastic deformation of the second connecting member 90 during installation.

[0128] When installing the guide rail frame 100, force is applied to the first rotator 10 and the bracket 30 to deform the first connecting member 40 and store the elastic force for restoring. After the bracket 30 is installed in the slider body 3001, the first rotator 10 is installed at one end of the slider body 3001 in the first direction X, and the second rotator 20 is installed at the other end of the slider body 3001 in the first direction X, the first connecting member 40 releases the elastic force and resets, and the second connecting member 90 releases the elastic force and resets, so that the first rotator 10 and the second rotator 20 have a movement tendency toward the slider body 3001 in the first direction X, so that the first rotator 10 and the second rotator 20 are elastically clamped on the slider body 3001, thereby improving the simplicity and feasibility of installing the guide rail frame 100.

[0129] In some embodiments, the first connecting member 40 includes a first section 41, a second section 42, and a third section 43 sequentially connected along the second direction Y, the first section 41 is connected to the first turning portion 11, the second section 42 is connected to the bracket 30, and the third section 43 is connected to the second turning portion 12. By setting the first connecting member 40 as a multi-section structure, it is beneficial to reduce the structural rigidity of the guide rail frame 100, facilitate deformation of the guide rail frame 100 to install the guide rail frame 100 on the slider body 3001, and facilitate assembly.

[0130] In some embodiments, there is a gap between the bracket 30 and the first turning portion 11, and there is a gap between the bracket 30 and the second turning portion 12, which is beneficial for the first turning portion 11 and the second turning portion 12 to avoid the ball 400, and facilitates the ball 400 to enter from the circulation channel 304 between the slider 300 and the guide rail 200, or facilitates the ball 400 to enter the circulation channel 304 from between the slider 300 and the guide rail 200. At the same time, it is also beneficial to reduce the structural stiffness of the guide rail frame 100, and facilitate the deformation of the first turning portion 11 and the second turning portion 12 relative to the bracket 30, so as to deform the guide rail frame 100 to be installed on the slider body 3001, which is beneficial for assembly.

[0131] In some embodiments, the second section 42 includes at least two first connection parts 421, and the at least two first connection parts 421 are arranged along the second direction Y. Along the second direction Y, a gap is provided between any two adjacent first connection parts 421, which is beneficial to further reduce the structural rigidity of the guide rail frame 100, facilitate the installation of the guide rail frame 100 on the slider body 3001, and facilitate assembly.

[0132] In some embodiments, the second connecting member 90 includes a fourth section 91, a fifth section 92, and a sixth section 93 sequentially connected along the second direction Y, the fourth section 91 is connected to the third turning portion 21, the fifth section 92 is connected to the bracket 30, and the sixth section 93 is connected to the fourth turning portion 22. By setting the second connecting member 90 as a multi-section structure, it is beneficial to reduce the structural rigidity of the guide rail frame 100, facilitate the deformation of the guide rail frame 100 so as to install the guide rail frame 100 on the slider body 3001, and facilitate assembly.

[0133] In some embodiments, there is a gap between the bracket 30 and the third turning portion 21, and there is a gap between the bracket 30 and the fourth turning portion 22, which is beneficial for the third turning portion 21 and the fourth turning portion 22 to avoid the ball 400, and facilitates the ball 400 to enter from the circulation channel 304 between the slider 300 and the guide rail 200, or facilitates the ball 400 to enter the circulation channel 304 from between the slider 300 and the guide rail 200. At the same time, it is also beneficial to further reduce the structural stiffness of the guide rail frame 100, facilitate the deformation of the guide rail frame 100 to be installed on the slider body 3001, and facilitate assembly.

[0134] In some embodiments, the fifth section 92 is provided with at least two second connection parts 921, and at least two second connection parts 921 are arranged along the second direction Y. Along the second direction Y, a gap is provided between any two adjacent second connection parts 921, which is beneficial to further reduce the structural rigidity of the guide rail frame 100, facilitate the installation of the guide rail frame 100 on the slider body 3001, and facilitate assembly.

[0135] In some embodiments, when installing the guide rail frame 100, force is applied to the first rotator 10 and the second rotator 20 to deform the first connecting member 40 and the second connecting member 90 and store the elastic force for restoration. The bracket 30 is installed in the installation groove 300a, the first rotator 10 is installed at one end of the slider body 3001 in the first direction X, and the second rotator 20 is installed at the other end of the slider body 3001 in the first direction X. Then the first connecting member 40 releases the elastic force, and the second connecting member 90 releases the elastic force, so that the first rotator 10 and the second rotator 20 are elastically clamped on the slider body 3001, which is beneficial to improve the ease and feasibility of installation of the guide rail frame 100.

[0136] See also Figure 2 In some embodiments, the slider 300 further includes a third retaining portion 81, which connects an end of the first turning portion 11 away from the first connecting member 40 and an end of the third turning portion 21 away from the second connecting member 90. The third retaining portion 81 cooperates with the first retaining portion 71 to form a retaining structure for retaining the ball 400, which is conducive to the ball 400 circulating and rolling between the circulation channel 304 and the guide rail frame 100 and the guide rail 200.

[0137] In some embodiments, along the first direction X, one end of the third retaining portion 81 is snap-fitted to the first end cover 50 , and the other end of the third retaining portion 81 is snap-fitted to the second end cover 60 , for ease of assembly and maintenance.

[0138] In some embodiments, the slider 300 further includes a fourth retaining portion 82, which connects an end of the second turning portion 12 away from the first connecting member 40 and an end of the fourth turning portion 22 away from the second connecting member 90. The fourth retaining portion 82 cooperates with the second retaining portion 72 to form a retaining structure for maintaining the movement of the ball 400, which is conducive to the ball 400 circulating and rolling between the circulation channel 304 and the guide rail frame 100 and the guide rail 200.

[0139] In some embodiments, along the first direction X, one end of the fourth retaining portion 82 is snap-fitted to the first end cover 50 , and the other end of the fourth retaining portion 82 is snap-fitted to the second end cover 60 , for ease of assembly and maintenance.

[0140] In other embodiments, more retaining structures may be provided in the third direction Z to form more ball 400 circulation structures in the third direction Z, which are not listed one by one here.

[0141] In addition, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not intended to limit the present application. As long as they are within the essential scope of the present application, appropriate changes and modifications to the above embodiments are within the scope disclosed in the present application.

Claims

1. A guide rail frame, characterized in that: The guide rail frame comprises: First gyrator; A second rotator, wherein the first rotator and the second rotator are arranged in a row along a first direction; a first holding portion, the first holding portion connecting a middle region of the first rotator and a middle region of the second rotator; a second holding portion, the second holding portion connecting a middle region of the first rotator and a middle region of the second rotator; The first rotator, the second rotator, the first holding portion and the second holding portion are an integrated structure; The first rotator comprises a first steering portion, a second steering portion and a first connecting member, the first steering portion and the second steering portion are arranged along a second direction, the first connecting member connects the first steering portion and the second steering portion, and the second direction is perpendicular to the first direction; The second rotator comprises a third steering portion, a fourth steering portion and a second connecting member, the third steering portion and the fourth steering portion are arranged along the second direction, and the second connecting member connects the third steering portion and the fourth steering portion; The first retaining portion connects a middle area of ​​the first turning portion and a middle area of ​​the third turning portion; The second retaining portion connects the middle area of ​​the second turning portion and the middle area of ​​the fourth turning portion; The guide rail frame further includes a bracket, the bracket connecting the first connecting member and the second connecting member, the first connecting member is used to store a resetting elastic force so that the first rotator and the bracket can move relative to each other through the elastic deformation of the first connecting member when installed, and the second connecting member is used to store a resetting elastic force so that the second rotator and the bracket can move relative to each other through the elastic deformation of the second connecting member when installed; The bracket, the first rotator, the second rotator, the first holding portion and the second holding portion are an integrated structure; The first connecting member includes a first section, a second section and a third section connected in sequence along the second direction, the first section is connected to the first turning portion, the second section is connected to the bracket, and the third section is connected to the second turning portion; A gap is provided between the bracket and the first turning portion, and a gap is provided between the bracket and the second turning portion.

2. The guide rail frame according to claim 1, characterized in that: The second connecting member comprises a fourth section, a fifth section and a sixth section connected in sequence along the second direction, the fourth section is connected to the third turning portion, the fifth section is connected to the bracket, and the sixth section is connected to the fourth turning portion; A gap is provided between the bracket and the second turning portion, and a gap is provided between the bracket and the fourth turning portion.

3. The guide rail frame according to claim 2, characterized in that: The guide rail frame satisfies at least one of conditions c and d: c. The second section is provided with at least two first connecting portions, and the at least two first connecting portions are arranged along the second direction; Along the second direction, a gap is provided between any two adjacent first connecting parts; d. The fifth section is provided with at least two second connecting parts, and the at least two second connecting parts are arranged along the second direction; Along the second direction, a gap is provided between any two adjacent second connecting portions.

4. The guide rail frame according to claim 1, characterized in that: The guide rail frame also includes: a third holding portion, the third holding portion connecting an end of the first turning portion facing away from the first connecting member and an end of the third turning portion facing away from the second connecting member; A fourth holding portion, wherein the fourth holding portion connects an end of the second turning portion facing away from the first connecting member and an end of the fourth turning portion facing away from the second connecting member.

5. The guide rail frame according to claim 4, characterized in that: The guide rail frame also includes: A first end cover, the first end cover is arranged on a side of the first rotator away from the second rotator, the first end cover is buckled and connected to the third holding portion, and the first end cover is buckled and connected to the fourth holding portion; The second end cover is arranged on a side of the second rotator away from the first rotator, the second end cover is buckled and connected to the third holding portion, and the second end cover is buckled and connected to the fourth holding portion.

6. The guide rail frame according to claim 1, characterized in that: The first rotator and the second rotator are both provided with a steering groove and a guide portion, the guide portion is provided with a through hole, and the through hole is connected to the steering groove.

7. A linear guide pair, characterized in that: It comprises a guide rail, a slider and a ball bearing, wherein the slider comprises a guide rail frame as claimed in any one of claims 1 to 6, and the ball bearing is movably connected to the guide rail and the guide rail frame.

8. The linear guide pair according to claim 7, characterized in that: The slider includes a slider body, the slider body is connected to the first rotator and the second rotator, the slider body is provided with a mounting groove, and the first retaining portion and the second retaining portion are provided in the mounting groove.

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