Circulation guide assembly, linear guide device
By using high-precision matching of the cyclic guide components, the problems of low assembly efficiency and rolling element jamming in linear guide devices are solved, achieving greater assembly convenience and smoother operation, while reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HENGLI PRECISION IND CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-14
AI Technical Summary
Existing linear guide rail devices suffer from low efficiency during assembly and step differences at the joints between components, leading to jamming of the rolling elements.
A cyclic guiding component is adopted, including a first forming body and two second forming bodies. Through high-precision matching, the step difference is reduced, ensuring smooth operation of the rolling elements.
It improves assembly convenience and smooth operation, reduces production costs, and reduces rolling element jamming.
Smart Images
Figure CN224497113U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of linear guide technology, and in particular to a circulating guide component and a linear guide device. Background Technology
[0002] In linear guide systems, linear reciprocating motion is primarily achieved by mounting a slider on a track. A typical slider assembly includes a slider body, return covers at opposite ends of the slider body, an inner guide section, a return channel, and rolling elements (balls or rollers) housed within the slider body. Currently, linear guide systems suffer from low assembly efficiency and errors during processing and assembly. These errors cause step differences to form at the joints between components along the rolling element's cyclical path, leading to jamming and ultimately, blockages. Utility Model Content
[0003] This disclosure provides a cyclic guide component and a linear guide device.
[0004] In a first aspect, this disclosure provides a circulating guide assembly applied to a linear guide device, comprising a first forming body and two second forming bodies; the first forming body includes a rolling element holding portion and two end connecting plates respectively disposed at both ends of the rolling element holding portion, the rolling element holding portion corresponding to two slider load channels of the slider of the linear guide device, for cooperating with the slider load channels to hold the rolling element in the slider load channels; the second forming body includes two assemblies, each assembly including a tubular return channel portion and an inner guide portion disposed at one end of the return channel portion, the two assemblies being connected to each other at one end of the inner guide portion to form a whole; the two return channels of the second forming body respectively correspond to the two return channels of the slider; the end connecting plates are also provided with mating holes respectively corresponding to the two return channels of the slider, the return channels of the two second forming bodies respectively pass through the mating holes of the end connecting plates at both ends of the first forming body, and the ends of the return channels of the two second forming bodies away from the inner guide portion are spliced together to form a complete return pipe; the inner guide portion is used to connect the corresponding return pipe and the slider load channel to guide the rolling element to realize the change of motion direction.
[0005] In some embodiments, the second molded body further includes a connecting portion, one end of which is connected to an inner guide portion of one assembly of the second molded body, and the other end of which is connected to an inner guide portion of another assembly, so that the two assemblies of the second molded body are connected to each other to form a whole.
[0006] In some embodiments, a connecting structure is provided at one end of the return channel portion of the second molded body away from the inner guide portion. The connecting structures of the return channel portions of the two second molded bodies cooperate with each other to splice the ends of the return channel portions of the two second molded bodies away from the inner guide portion to form a complete return pipe.
[0007] In some embodiments, the connection structure includes a protrusion and a groove disposed at a symmetrical position at one end of the return channel portion away from the inner guide portion, the protrusion and the groove being shaped to match, and the protrusion and groove of the return channel portion of one second molded body being respectively inserted and positioned into the groove and protrusion of the return channel portion of another second molded body.
[0008] In some embodiments, one end of the inner guide portion is connected to the return channel portion, and the other end is provided with a positioning structure; the positioning structure is used to connect and position with the end connecting plate.
[0009] In some embodiments, the shape of the inner hole cross-section of the return channel is annular or rectangular.
[0010] In some embodiments, a guide groove is provided on the inner wall of the return channel portion for matching with a retainer, the retainer being used to fix the relative position between adjacent rolling elements.
[0011] In a second aspect, this disclosure provides a linear guide device, including a slider, a linear track, and rolling elements. The slider includes a slider body and return outer covers disposed at both ends of the slider body, and also includes a circulation guide assembly according to the first aspect of this disclosure. The linear track extends along a first direction, and a track load channel extending along the first direction is provided on the linear track. The slider body is provided with a slider load channel extending along the first direction and a return channel, the slider load channel cooperating with the track load channel to form a load channel. The circulation guide assembly includes a first forming body and two second forming bodies. The first forming body includes a rolling element holding part and two end connecting plates respectively disposed at both ends of the rolling element holding part. The rolling element holding part is disposed in the load channel and is used to cooperate with the load channel to hold the rolling element in the load channel. The two end connecting plates are respectively disposed on the slider. On both end faces of the main body; the second molded body includes two assemblies, each assembly including a tubular return channel portion and an inner guide portion disposed at one end of the return channel portion, the two assemblies being connected to each other at one end of the inner guide portion to form a whole; the end connecting plate is also provided with mating holes corresponding to the two return channels of the slider body respectively, the return channels of the two second molded bodies passing through the mating holes of the end connecting plates at both ends of the first molded body respectively, and disposed in the return channels of the slider body, the ends of the return channels of the two second molded bodies away from the inner guide portion being spliced together to form a complete return pipe; the outer cover of the return is provided with an outer guide portion, the outer guide portion and the inner guide portion forming a reversing channel; one load channel, one return pipe, and the reversing channels disposed at both ends of the slider form a circulation channel, the rolling element circulates in the circulation channel.
[0012] In some embodiments, the rolling element is a ball, and the inner cross-section of the return channel is annular; or
[0013] The rolling element is a roller, and the inner cross-section of the return channel is rectangular.
[0014] In some embodiments, the linear guide device further includes a retainer for fixing the relative position between adjacent rolling elements; a guide groove is provided on the inner wall of the return channel portion, and the guide groove matches the retainer.
[0015] In some embodiments, a step-eliminating portion is provided at the connection between the inner guide portion and the slider load channel, the step-eliminating portion causing the end of the slider load channel to be lower than the end of the inner guide portion.
[0016] In this embodiment, the circulation guide assembly includes a first molded body and two second molded bodies. The second molded body is integrally formed from two inner guide portions and a return channel portion. The return channel portions of the two second molded bodies are spliced together to form a complete return pipe. No inner guide portions are provided on either end face of the first molded body. Through the high-precision matching between the components of the circulation guide assembly, the step difference between the joints of the components in the linear guide device can be reduced, improving the smoothness of operation, while also improving the ease of assembly and reducing production costs. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a circulating guide assembly for a linear guide device according to an embodiment of the present disclosure.
[0018] Figure 2 This is a schematic diagram of the split structure of the loop guide component in an embodiment of this disclosure.
[0019] Figure 3 This is a schematic diagram of the structure of the two second molded bodies of the cyclic guiding component cooperating with each other in an embodiment of this disclosure.
[0020] Figure 4 This is a schematic diagram of the end structure of the loop guide component in an embodiment of this disclosure.
[0021] Figure 5 This is a schematic diagram of the structure of a linear guide device according to an embodiment of this disclosure.
[0022] Figure 6 This is a schematic diagram of a linear guide device with one corner cut off in an embodiment of this disclosure.
[0023] Figure 7 This is a cross-sectional view of the rolling element of a cyclic guide component of a linear guide device according to an embodiment of the present disclosure during rolling.
[0024] Figure 8 yes Figure 5 A schematic diagram showing the disassembled structure of the remaining components of the linear guide device after the linear rail has been removed.
[0025] Figure 9 This is a schematic diagram of the structure of the second forming body of the cyclic guide component cooperating with the slider in an embodiment of this disclosure.
[0026] Figure 10 yes Figure 9 A cross-sectional schematic diagram of the second forming body and the slider in action.
[0027] Figure 11 This is a cross-sectional schematic diagram of a ball-holding chain linear guide.
[0028] Figure 12 This is a cross-sectional schematic diagram of a roller-type linear guide.
[0029] Explanation of reference numerals in the attached figures:
[0030] 21. First forming body; 211. Rolling element holding part; 212. End connecting plate; 22. Second forming body; 221. Inner guide part; 222. Return channel part; 223. Protrusion; 224. Groove; 3. Connecting part; 4. Positioning structure; 5. Guide groove; 6. Slider load channel; 7. Step elimination part; 8. Outer guide part; 9. Mating hole; 100. Linear track; 101. Rolling element; 102. Slider body; 103. Return outer cover; 104. Track load channel. Detailed Implementation
[0031] To enable those skilled in the art to better understand the technical solutions of this disclosure, the technical solutions of this disclosure will be described in detail below with reference to the accompanying drawings.
[0032] Exemplary embodiments will be described more fully below with reference to the accompanying drawings; however, these exemplary embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this disclosure.
[0033] Where there is no conflict, the various embodiments of this disclosure and the features thereof in the embodiments may be combined with each other.
[0034] As used herein, the term “and / or” includes any and all combinations of one or more related enumerated entries.
[0035] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. As used herein, the singular forms “a” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the stated feature, integral, step, operation, element, and / or component is specified, but the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof is not excluded.
[0036] The embodiments described herein can be described with reference to plan views and / or cross-sectional views using the ideal schematic diagrams of this disclosure. Therefore, the example illustrations can be modified according to manufacturing techniques and / or tolerances. Therefore, the embodiments are not limited to those shown in the drawings, but include modifications to configurations formed based on manufacturing processes. Therefore, the areas illustrated in the drawings are schematic in nature, and the shapes of the areas shown in the figures illustrate specific shapes of areas of an element, but are not intended to be limiting.
[0037] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this disclosure, and will not be interpreted as having an idealized or overly formal meaning, unless expressly so defined herein.
[0038] Figure 1 This is a schematic diagram of the structure of a circulating guide assembly for a linear guide device according to an embodiment of the present disclosure; Figure 2 This is a schematic diagram of the split structure of the loop guide component in an embodiment of this disclosure.
[0039] like Figure 1 , Figure 2 As shown, the circulation guide assembly includes a first forming body 21 and two second forming bodies 22. The first forming body 21 includes a rolling element holding portion 211 and two end connecting plates 212 respectively disposed at both ends of the rolling element holding portion 211. The rolling element holding portion 211 corresponds to the two slider load channels 6 of the linear guide device's slider and is used to cooperate with the slider load channels 6 to hold the rolling element within them. The second forming body 22 includes two assemblies, each comprising a tubular return channel portion 222 and an inner guide portion 221 disposed at one end of the return channel portion 222. The two assemblies are connected together at one end of the inner guide portion 221 to form a single unit. The two return channel portions 222 of the second forming body 22 correspond to the two return channels of the slider, respectively.
[0040] like Figure 2 As shown, the end connecting plate 212 is also provided with mating holes 9 corresponding to the two return channels of the slider. The return channel portions 222 of the two second forming bodies 22 pass through the mating holes 9 of the end connecting plate 212 at both ends of the first forming body 21. The ends of the return channel portions 222 of the two second forming bodies 22 away from the inner guide portion 221 are spliced together to form a complete return pipe. The inner guide portion 221 is used to connect the corresponding return pipe and the slider load channel 6 to guide the rolling body to realize the change of motion direction.
[0041] In this embodiment of the disclosure, the circulation guide assembly consists of a first molded body 21 and two second molded bodies 22. Each second molded body 22 has an inner guide portion 221 at one end corresponding to each return channel portion 222. (Refer to...) Figure 1 , Figure 2Each return channel portion 222 of the two second forming bodies 22 is spliced together at the end away from the inner guide portion 221 to form a complete return pipe. The inner guide portion 221 is not provided on the end face of the connecting plate 212 at both ends of the first forming body 21. In some embodiments, the inner guide portion 221 and the return channel portion 222 are integral structures, which is beneficial to improve processing accuracy, avoid step differences during assembly, and thus improve positional accuracy.
[0042] In some embodiments, the rolling element holding portion 211 and the end connecting plate 212 of the first molded body 21 are integrally formed. For example, the rolling element holding portion 211 and the end connecting plate 212 are integrally formed by injection molding or by compression molding and sintering. This disclosure does not impose any special limitations on the material of the first molded body 21; for example, it can be plastic, resin, metal, etc.
[0043] In this embodiment, the second forming body 22 engages with the two return channels of the slider via two return channel portions 222. When the return channel portions 222 of the second forming body 22 are engaged and positioned with the return channels of the slider, the inner guide portion 221 of the second forming body is fixed to the slider via the first forming body 21, so that the first forming body 21, the second forming body 22, and the slider load channel 6 will not move relative to each other, thus ensuring high reliability of engagement. Therefore, the inner guide portion 221 of the second forming body 22 and the slider load channel 6 can ensure high positional accuracy, thereby enabling the rolling element to smoothly enter the return pipe from the slider load channel 6 or enter the slider load channel 6 from the return pipe. At the same time, due to the simple positioning, the requirements for processing accuracy and assembly accuracy can be reduced, thereby saving costs.
[0044] In this embodiment, the return channel portion 222 of the second molded body 22 forms a hole-position fit with the first molded body 21 through the mating hole 9. When the second molded body 22 and the first molded body 21 are fitted together to form a circulation guide assembly, the return channel portion 222 and the inner guide portion 221 of the second molded body 22 form a mating positioning with the end connecting plate 212 of the first molded body 21. As can be seen from the above, when the return channel portion 222 of the second molded body 22 forms a mating positioning with the slider load channel 6, the reliability of the fit between the two is high, and the positional accuracy is high. Therefore, it indirectly ensures the fitting accuracy between the rolling element holding portion 211 of the first molded body 21 and the slider load channel 6, thereby ensuring that the rolling element smoothly enters the return pipe from the slider load channel 6 or enters the slider load channel 6 from the return pipe. At the same time, since the positioning is simple, the requirements for processing accuracy and assembly accuracy can be reduced, thereby saving costs.
[0045] In some embodiments, refer to Figure 2The second molded body 22 also includes a connecting portion 3, which can connect the two assemblies into one unit at the inner guide portion 221 of the two assemblies, or at the return channel portion 222 of the two assemblies into one unit. This disclosure does not impose any special limitations on this aspect.
[0046] In some embodiments, one end of the connecting portion 3 is connected to the inner guide portion 221 of one assembly of the second molded body 22, and the other end is connected to the inner guide portion 221 of another assembly, so that the two assemblies of the second molded body 22 are connected to each other to form a whole.
[0047] In this embodiment, the second molded body 22 includes two return channel portions 222, each of which is integrated with an inner guide portion 221 to form two assemblies. The two inner guide portions 221 are connected by a connecting portion 3 to form a single unit. In this embodiment, the connecting portion 3 may also be disposed between the two return channel portions, thereby connecting the two assemblies into a single unit. This embodiment does not impose any special limitations on the processing method of the second molded body 22. For example, the second molded body 22 can be integrally molded by injection molding. This embodiment does not impose any special limitations on the material of the second molded body 22; for example, it can be plastic, resin, metal, etc.
[0048] Figure 3 This is a schematic diagram of the structure of the two second molded bodies of the cyclic guiding component cooperating with each other in an embodiment of this disclosure.
[0049] In some embodiments, a connecting structure is provided at one end of the return channel portion 222 of the second molded body 22 away from the inner guide portion 221. The connecting structures of the return channel portions 222 of the two second molded bodies 22 cooperate with each other to splice the ends of the return channel portions 222 of the two second molded bodies 22 away from the inner guide portion 221 to form a complete return pipe.
[0050] In some embodiments, refer to Figure 3 The connecting structure includes a protrusion 223 and a groove 224 located symmetrically at one end of the return channel portion 222 away from the inner guide portion 221. The protrusion 223 and the groove 224 are shaped to match each other. The protrusion 223 and the groove 224 of the return channel portion 222 of one second molded body 22 are respectively inserted and positioned into the groove 224 and the protrusion 223 of the return channel portion 222 of the other second molded body 22.
[0051] In this embodiment, the return channel portion 222 of the second molded body 22 is provided with a pair of protrusions 223 and grooves 224 at the end away from the inner guide portion 221. This disclosure does not impose a special limitation on the number of pairs of protrusions 223 and grooves 224. Taking a return channel portion 222 provided with a pair of protrusions 223 and grooves 224 as an example, refer to... Figure 3 The protrusion 223 and the groove 224 are symmetrically arranged about the central axis extending along the return channel 222. The two second forming bodies 22 are as follows: Figure 3 As shown, the protrusions 223 and grooves 224 are arranged opposite to each other, allowing for mutual alignment. Therefore, only one mold is needed in the production of the second molded body 22, which helps reduce production costs.
[0052] In some embodiments, refer to Figure 3 One end of the inner guide section 221 is connected to the return channel section 222, and the other end is provided with a positioning structure 4; the positioning structure 4 is used to connect and position with the end connecting plate 212.
[0053] In some embodiments, the shape of the inner hole cross-section of the return channel portion 222 of the second forming body 22 is annular or rectangular.
[0054] In the embodiments disclosed herein, such as Figure 4 As shown, Figure 4 This is a schematic diagram of the end structure of the circulating guide component in this embodiment. The shape of the return pipe cross-section formed by splicing the return channel portions 222 of the two second forming bodies 22 is annular. Specifically, the shape of the return pipe cross-section can be a perfect circle or a non-perfect circle, such as an ellipse or a near-circular shape. For ball bearings, the shape of the return pipe cross-section will affect the load and rolling smoothness, and can be designed according to specific working conditions. This embodiment does not impose any special limitations on this.
[0055] In some embodiments, refer to Figure 4 The inner wall of the return channel portion 222 of the second forming body 22 is provided with a guide groove 5 for matching with a retainer. The retainer is used to fix the relative position between adjacent rolling elements 101. In some embodiments, the retainer is provided with a plurality of positioning holes, and the rolling elements 101 are disposed in the positioning holes and can rotate in the positioning holes, thereby rolling in the return pipe to drive the retainer to move along the extension direction of the return pipe. The edge of the positioning hole is provided with a limiting structure that matches the shape of the rolling element 101. The limiting structure contacts the outer peripheral surface of the rolling element 101 to limit the position of the rolling element 101 and prevent the rolling element 101 from coming out of the positioning hole. In some embodiments, the limiting structure includes a limiting part and a protrusion. The protrusion is fixedly connected to the limiting part and together encloses to form the positioning hole. The protrusion is arranged along the axis of the extension direction of the retainer. The height of the protrusion is higher than the height of the limiting part and lower than the diameter of the rolling element 101. The limiting part cooperates with the guide groove 5 to make the retainer cooperate with the return channel portion 222.
[0056] Figure 5 This is a schematic diagram of the structure of a linear guide device according to an embodiment of this disclosure. Figure 6This is a schematic diagram of a linear guide device with one corner cut off in an embodiment of this disclosure. Figure 7 This is a cross-sectional view of the rolling element of a cyclic guide component of a linear guide device according to an embodiment of the present disclosure during rolling.
[0057] like Figure 5 , Figure 6 , Figure 7 As shown, the linear guide device includes a slider, a linear track 100, and rolling elements 101. The slider includes a slider body 102 and return covers 103 disposed at both ends of the slider body 102. The linear guide device also includes a circulation guide assembly. The linear track 100 extends along a first direction and is provided with a track load channel 104 extending along the first direction. The slider body 102 is provided with a slider load channel 6 extending along the first direction and a return channel. The slider load channel 6 and the track load channel 104 cooperate to form a load channel.
[0058] like Figure 1 , Figure 2 , Figures 5 to 7 As shown, the circulating guide assembly includes a first forming body 21 and two second forming bodies 22. The first forming body 21 includes a rolling element holding part 211 and two end connecting plates 212 respectively disposed at both ends of the rolling element holding part 211. The rolling element holding part 211 is disposed in the load channel and is used to cooperate with the load channel to hold the rolling element 101 in the load channel. The two end connecting plates 212 are respectively disposed on the two end faces of the slider body 102. The second forming body 22 includes two assemblies. The assemblies include a tubular return channel part 222 and are disposed at the return channel. The inner guide portion 221 at one end of the channel portion 222 is used to connect the two assemblies together at one end of the inner guide portion 221 to form a whole; the end connecting plate 212 is also provided with mating holes 9 corresponding to the two return channels of the slider body 102 respectively. The return channel portions 222 of the two second forming bodies 22 pass through the mating holes 9 of the end connecting plates 212 at both ends of the first forming body 21 and are set in the return channel of the slider body 102. The ends of the return channel portions 222 of the two second forming bodies 22 away from the inner guide portion 221 are spliced together to form a complete return pipe.
[0059] Figure 8 yes Figure 5 A schematic diagram showing the disassembled structure of the remaining components of the linear guide device after the linear rail has been removed. (See diagram below.) Figure 8 As shown, the outer cover 103 is provided with an outer guide 8, which together with the inner guide 221 forms a reversing channel; a load channel, a return pipe, and the reversing channels provided at both ends of the slider form a circulation channel, in which the rolling element 101 circulates.
[0060] In some embodiments, the reversing outer cover 103 is installed on both ends of the slider body 102 in the moving direction by means of bolts or the like. The outer guide portion 8 provided on the reversing outer cover 103 is a concave portion with a semi-circular cross section. The inner guide portion 221 of the second molded body 22 cooperates with the concave portion of the outer guide portion 8 to form a reversing channel.
[0061] In some embodiments, the rolling element 101 is a ball, and the inner cross-section of the return channel portion 222 is annular.
[0062] In this embodiment, the shape of the return pipe cross-section is annular. Specifically, the shape of the return pipe cross-section can be a perfect circle or a non-perfect circle, such as an ellipse or a near-circular shape. For ball bearings, the shape of the return pipe cross-section affects the load and rolling smoothness, and can be designed according to specific working conditions. This embodiment does not impose any special limitations on this.
[0063] In some embodiments, the rolling element 101 is a roller, and the inner cross-sectional shape of the return channel portion 222 is rectangular.
[0064] In some embodiments, refer to Figure 4 The linear guide device also includes a retainer for fixing the relative position between adjacent rolling elements 101. A guide groove 5 is provided on the inner wall of the return channel portion 222, and the guide groove 5 matches the retainer. The retainer has multiple positioning holes, in which the rolling elements 101 are disposed and can rotate, thus rolling in the return pipe to move the retainer along the extension direction of the return pipe. A limiting structure matching the shape of the rolling element 101 is provided at the edge of the positioning hole. The limiting structure contacts the outer peripheral surface of the rolling element 101 to limit the position of the rolling element 101 and prevent it from dislodging from the positioning hole. The limiting structure includes a limiting part and a protrusion. The protrusion is fixedly connected to the limiting part, together forming the positioning hole. The protrusion is positioned along the axis of the retainer's extension direction. The height of the protrusion is higher than the height of the limiting part and lower than the diameter of the rolling element 101. The limiting part cooperates with the guide groove 5, allowing the retainer to cooperate with the return channel portion 222.
[0065] In some embodiments, refer to Figure 9 , Figure 10 , Figure 9 This is a schematic diagram of the structure of the second forming body 22 of the cyclic guiding component cooperating with the slider in an embodiment of this disclosure; Figure 10 yes Figure 9 A cross-sectional schematic diagram of the second forming body 22 cooperating with the slider. A step elimination part 7 is provided at the connection between the inner guide part 221 and the slider load channel 6, and the step elimination part 7 makes the end of the slider load channel 6 lower than the end of the inner guide part 221.
[0066] In this embodiment of the disclosure, reference is made to Figure 10 The step elimination section 7 serves as a transition structure for guiding the rolling element 101 from the return pipe to the load channel, or from the load channel to the return pipe, such that the end of the slider load channel 6 is slightly lower than the end of the inner guide section 221. By providing the step elimination section 7, the impact wear of the rolling element 101 can be reduced, the life of the circulation guide assembly can be improved, and ball jamming can be avoided, which is conducive to the smooth operation of the rolling element 101 in the circulation channel.
[0067] In this embodiment, the step-eliminating part 7 can be an extension of the end of the slider load channel 6, and be integral with the slider load channel 6; the step-eliminating part 7 can also be an extension of the inner guide part 221 near the end of the slider load channel 6, and be integral with the inner guide part 221; the step-eliminating part 7 can also be a separate component provided at the connection between the inner guide part 221 and the slider load channel 6. This embodiment does not impose any special limitations on this.
[0068] In this embodiment, the step-eliminating part 7 achieves a smooth transition between the inner guide part 221 and the slider load channel part 6. The side of the step-eliminating part 7 connecting the inner guide part 221 and the slider load channel 6 can be a plane or a curved surface. This embodiment does not impose any special limitations on this.
[0069] Figure 11 This is a cross-sectional schematic diagram of a ball-holding chain linear guide; Figure 12 This is a cross-sectional schematic diagram of a roller-type linear guide. In some embodiments, Figure 1 The loop bootstrap component shown is also compatible with Figure 11 , Figure 12 The linear guide shown.
[0070] Example embodiments have been disclosed herein, and while specific terminology has been used, it is for illustrative purposes only and should be construed as such, and is not intended to be limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in connection with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in connection with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of this disclosure as set forth by the appended claims.
Claims
1. A loop boot component, characterized in that, Applied to linear guide devices, including a first forming body (21) and two second forming bodies (22); The first forming body (21) includes a rolling element holding part (211) and two end connecting plates (212) respectively disposed at both ends of the rolling element holding part (211). The rolling element holding part (211) corresponds to the two slider load channels (6) of the slider of the linear guide device and is used to cooperate with the slider load channels (6) to hold the rolling element (101) in the slider load channels (6). The second forming body (22) includes two assemblies, each assembly including a tubular return channel portion (222) and an inner guide portion (221) disposed at one end of the return channel portion (222). The two assemblies are connected to each other at one end of the inner guide portion (221) to form a whole. The two return channel portions (222) of the second forming body (22) correspond to the two return channels of the slider, respectively. The end connecting plate (212) is also provided with mating holes (9) corresponding to the two return channels of the slider. The return channel portions (222) of the two second forming bodies (22) pass through the mating holes (9) of the end connecting plates (212) at both ends of the first forming body (21). The return channel portions (222) of the two second forming bodies (22) are spliced together at the ends away from the inner guide portion (221) to form a complete return pipe. The inner guide portion (221) is used to connect the corresponding return pipe and the slider load channel (6) to guide the rolling body (101) to realize the change of motion direction.
2. The loop guiding component according to claim 1, characterized in that, The second molded body (22) further includes a connecting part (3), one end of which is connected to the inner guide part (221) of one assembly of the second molded body (22), and the other end is connected to the inner guide part (221) of another assembly, so that the two assemblies of the second molded body (22) are connected to each other to form a whole.
3. The cyclic guiding component according to claim 1 or 2, characterized in that, The return channel portion (222) of the second molded body (22) is provided with a connecting structure at one end away from the inner guide portion (221). The connecting structures of the return channel portions (222) of the two second molded bodies (22) cooperate with each other to splice the ends of the return channel portions (222) of the two second molded bodies (22) away from the inner guide portion (221) to form a complete return pipe.
4. The loop guide component according to claim 3, characterized in that, The connection structure includes a protrusion (223) and a groove (224) located symmetrically at one end of the return channel portion (222) away from the inner guide portion (221). The protrusion (223) and the groove (224) are shaped to match each other. The protrusion (223) and the groove (224) of the return channel portion (222) of one second molded body (22) are respectively inserted and positioned into the groove (224) and the protrusion (223) of the return channel portion (222) of another second molded body (22).
5. The cyclic guiding component according to claim 1 or 2, characterized in that, One end of the inner guide (221) is connected to the return channel (222), and the other end is provided with a positioning structure (4); the positioning structure (4) is used to connect and position with the end connecting plate (212).
6. The cyclic guiding component according to claim 1 or 2, characterized in that, The inner cross-section of the return channel section (222) is annular or rectangular.
7. The loop guide component according to claim 6, characterized in that, The inner wall of the return channel section (222) is provided with a guide groove (5) for matching with a retainer, which is used to fix the relative position between adjacent rolling elements (101).
8. A linear guide device, comprising a slider, a linear track (100), and rolling elements (101), wherein the slider comprises a slider body (102) and return covers (103) disposed at both ends of the slider body (102), characterized in that, It also includes the loop boot component according to any one of claims 1 to 7; The straight track (100) extends along a first direction, and a track load channel (104) extending along the first direction is provided on the straight track (100); The slider body (102) is provided with a slider load channel (6) extending along the first direction and a return channel. The slider load channel (6) and the track load channel (104) cooperate to form a load channel. The circulation guide assembly includes a first forming body (21) and two second forming bodies (22); The first forming body (21) includes a rolling element holding part (211) and two end connecting plates (212) respectively disposed at both ends of the rolling element holding part (211). The rolling element holding part (211) is disposed in the load channel and is used to cooperate with the load channel to hold the rolling element (101) in the load channel. The two end connecting plates (212) are respectively disposed on the two end faces of the slider body (102). The second molded body (22) includes two assemblies, each assemblies including a tubular return channel portion (222) and an inner guide portion (221) disposed at one end of the return channel portion (222), the two assemblies being connected to each other at one end of the inner guide portion (221) to form a whole; The end connecting plate (212) is also provided with mating holes (9) corresponding to the two return channels of the slider body (102). The return channel portions (222) of the two second forming bodies (22) pass through the mating holes (9) of the end connecting plates (212) at both ends of the first forming body (21) and are set in the return channels of the slider body (102). The return channel portions (222) of the two second forming bodies (22) are spliced together at the ends away from the inner guide portion (221) to form a complete return pipe. The outer cover (103) is provided with an outer guide (8), and the outer guide (8) and the inner guide (221) form a reversing channel; a load channel, a return pipe, and the reversing channels provided at both ends of the slider form a circulation channel, and the rolling body (101) circulates in the circulation channel.
9. The linear guide device according to claim 8, characterized in that, The rolling element (101) is a ball bearing, and the inner cross-section of the return channel portion (222) is annular; or The rolling element (101) is a roller, and the inner cross-section of the return channel (222) is rectangular.
10. The linear guide device according to claim 9, characterized in that, The linear guide device also includes a retainer for fixing the relative position between adjacent rolling elements (101); a guide groove (5) is provided on the inner wall of the return channel portion (222), and the guide groove (5) matches the retainer.
11. The linear guide device according to any one of claims 8 to 10, characterized in that, A step-eliminating part (7) is provided at the connection between the inner guide part (221) and the slider load channel (6), and the step-eliminating part (7) makes the end of the slider load channel (6) lower than the end of the inner guide part (221).