Totally-closed linear module
By improving the bearing structure, the bearing is subjected to uniform force and noise is reduced, solving the problems of uneven bearing force and noise pollution, and achieving stability and quietness of the fully enclosed linear module in high-speed applications.
Patent Information
- Application Number
- CN202520966830.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-05-15
AI Technical Summary
Uneven stress distribution in bearings makes fully enclosed linear modules unsuitable for high-speed applications, and the coordinated movement of the transmission shaft and sealing strip can generate noise pollution.
By connecting the shaft body of the transmission shaft to the slide table and passing it through the bushing and bearing, the inner ring of the bearing is connected to the shaft body, and the outer ring of the bearing is connected to the bushing, so that the bushing and the shaft body are rotatably connected. The bearing seat is eliminated, and only the assembly accuracy of the shaft body and the bushing needs to be ensured to ensure uniform bearing force. The rubber coating layer and the sealing strip make elastic contact to reduce noise.
It improves the reliability and stability of the fully enclosed linear module, making it suitable for high-speed applications, and reduces operating noise to below 65 decibels, providing a quiet working environment.
Smart Images
Figure CN223953089U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of linear module technology, and more particularly to a fully enclosed linear module. Background Technology
[0002] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.
[0003] A fully enclosed linear module is a linear transmission device that effectively prevents foreign objects from entering the module through the coordinated movement of the transmission shaft and the sealing strip. The coordinated movement of the transmission shaft and the sealing strip relies on the rotation of the inner ring of the bearing, while the outer ring of the bearing needs to be mounted on the bearing housing and remain stationary. This can easily lead to uneven stress on the bearing, making the linear module unsuitable for high-speed applications. Utility Model Content
[0004] In view of this, the purpose of this application is to provide a fully enclosed linear module, which aims to solve the technical problem that the bearing is prone to uneven force distribution, making the linear module unsuitable for high-speed application scenarios.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:
[0006] An embodiment of this application provides a fully enclosed linear module, comprising:
[0007] slide;
[0008] The cover plate is connected to the slide table;
[0009] A sealing strip is disposed between the cover plate and the slide, the slide being movable relative to the sealing strip along the length direction of the sealing strip;
[0010] A transmission shaft is disposed between the cover plate and the slide table, and includes a shaft body, a bushing, and a bearing. The shaft body passes through the bushing and the bearing and is connected to the slide table. The outer circumference of the bushing abuts against the sealing strip. The inner ring of the bearing is connected to the shaft body, and the outer ring of the bearing is connected to the bushing, so that the bushing and the shaft body are rotatably connected.
[0011] In one embodiment, the bushing includes a sleeve and a rubber coating layer. The sleeve is connected to the outer ring of the bearing, and the rubber coating layer is disposed on the outer peripheral side of the sleeve and abuts against the sealing strip. The Shore hardness of the rubber coating layer is 55A to 65A.
[0012] In one embodiment, the thickness of the adhesive layer is 0.5 mm to 1.5 mm.
[0013] In one of the embodiments, the shaft body comprises a main body part, a positioning part and a limiting part, the positioning part is connected to the outer circumferential side of the main body part, the limiting part is detachably connected to the main body part, the positioning part and the limiting part are arranged in a spaced manner, the main body part is in interference fit with the inner ring of the bearing, and the inner ring of the bearing abuts between the limiting part and the positioning part.
[0014] In one of the embodiments, the full-enclosed linear module further comprises a threaded fastener, the threaded fastener is arranged in the main body part and is in threaded connection with the sliding table.
[0015] In one of the embodiments, the threaded fastener comprises a nut and a screw rod connected to each other, the sliding table is provided with a relief groove, a part of the main body part is located in the relief groove, the part of the main body part located in the relief groove is provided with a first connecting hole, the bottom of the relief groove is provided with a second connecting hole, the nut is located in the relief groove and abuts against the main body part, the screw rod is arranged in the first connecting hole and the second connecting hole and is in threaded connection with the hole wall of the second connecting hole.
[0016] In one of the embodiments, the part of the main body part located in the relief groove is provided with a stepped structure, the stepped structure comprises a first contact surface and a second contact surface arranged oppositely, the first connecting hole is located between the first contact surface and the second contact surface, the first contact surface is in surface contact with the nut, and the second contact surface is in surface contact with the bottom of the relief groove.
[0017] In one of the embodiments, the stepped structure further comprises a third contact surface and a fourth contact surface, the third contact surface and the fourth contact surface are located on the side of the limiting part away from the bearing, the third contact surface is in perpendicular connection with the first contact surface, the fourth contact surface is in perpendicular connection with the second contact surface, and the third contact surface and the fourth contact surface are in surface contact with the part of the sliding table provided with the relief groove.
[0018] In one of the embodiments, the limiting part is a snap ring, the outer circumferential side of the main body part is provided with a ring groove, and the snap ring is clamped at the ring groove.
[0019] In one of the embodiments, a plurality of the transmission shafts are arranged in a spaced manner along the length direction of the sealing belt, and at least two of the transmission shafts are located on different sides of the sealing belt.
[0020] The beneficial effects of the present application are as follows:
[0021] The full-closed linear module provided by the application is characterized in that the shaft body of the transmission shaft is connected with the sliding table and is arranged through the shaft sleeve and the bearing, the inner ring of the bearing is connected with the shaft body, the outer ring of the bearing is connected with the shaft sleeve, and the shaft sleeve and the shaft body are rotationally connected. In this way, when the transmission shaft and the sealing belt move coordinately, the outer ring of the bearing rotates, and the shaft body and the inner ring of the bearing remain stationary, so that the bearing bears force more uniformly, thereby improving the reliability and stability of the full-closed linear module and enabling the full-closed linear module to be applicable to high-speed application scenarios.
[0022] In order to make the above objectives, characteristics and advantages of the application more apparent and easy to understand, the following preferred embodiments are specifically described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.
[0024] Figure 1 A perspective structural schematic view of the full-closed linear module in one embodiment of the application is shown;
[0025] Figure 2 Another perspective structural schematic view of the full-closed linear module in one embodiment of the application is shown;
[0026] Figure 3 A sectional structural schematic view of the A-A position in Figure 2 is shown;
[0027] Figure 4 An enlarged structural schematic view of the B region in Figure 3 is shown;
[0028] Figure 5 An exploded structural schematic view of Figure 1 is shown; Figure 1 ;
[0029] Figure 6 An exploded structural schematic view of Figure 1 is shown; Figure 2 ;
[0030] Figure 7 An assembly structural schematic view of the transmission shaft and the sliding table in Figure 1 is shown;
[0031] Figure 8 An exploded structural schematic view of Figure 7 is shown;
[0032] Figure 9 A structure diagram of the transmission shaft is shown. Figure 8 A structure diagram of the transmission shaft is shown.
[0033] Figure 10 A structure diagram of the transmission shaft is shown. Figure 9 A structure diagram of the transmission shaft is shown. Figure 1 ;
[0034] Figure 11 A structure diagram of the transmission shaft is shown. Figure 9 A structure diagram of the transmission shaft is shown. Figure 2 .
[0035] Main element symbol explanation:
[0036] 100 - full-enclosed linear module; 110 - sliding table; 111 - avoiding groove; 112 - second connecting hole; 120 - cover plate; 130 - sealing band; 140 - transmission shaft; 141 - shaft body; 1411 - main body part; 14111 - ring groove; 14112 - first connecting hole; 14113 - first contact surface; 14114 - second contact surface; 14115 - third contact surface; 14116 - fourth contact surface; 1412 - positioning part; 1413 - limiting part; 142 - shaft sleeve; 1421 - sleeve; 1422 - rubber coating layer; 143 - bearing; 1431 - inner ring; 1432 - outer ring; 144 - threaded fastener; 1441 - nut; 1442 - screw rod; 150 - module body; 151 - containing cavity; 152 - opening; 161 - guide rail; 162 - sliding block; 163 - coil holder; 164 - electromagnetic coil; 165 - magnetic rail; X - length direction. DETAILED DESCRIPTION
[0037] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only, and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0038] In the description of the present application, the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0039] In addition, unless specifically stated and limited otherwise, the first feature is "on" or "under" the second feature can be that the first feature and the second feature are in direct contact, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature is "on", "above" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.
[0040] In the description of the present application, the terms "first", "second" and the like are used to distinguish different objects, and cannot be understood as indicating or implying a specific order or primary and secondary relationship, or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0041] In the description of the present application, unless otherwise specifically stated and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0042] In the description of the present application, the term "and / or" indicates that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / ", in general, indicates that the front and rear associated objects are in an "or" relationship.
[0043] In the description of the present application, "parallel" not only includes the case of absolute parallel, but also includes the case of approximate parallel which is generally recognized in engineering; at the same time, "vertical" not only includes the case of absolute vertical, but also includes the case of approximate vertical which is generally recognized in engineering. Illustratively, the included angle between two directions is 80°-90°, which can be considered as vertical; the included angle between two directions is 0°-10°, which can be considered as parallel.
[0044] The full-closed linear module is a linear transmission device, which can effectively prevent foreign matters from entering the inside of the module through the cooperative movement of the transmission shaft and the sealing belt. The cooperative movement of the transmission shaft and the sealing belt depends on the rotation of the inner ring of the bearing, and the outer ring of the bearing needs to be installed on the bearing seat to keep stationary. Since the bearing seat needs to be used, it is difficult to ensure the precision of multiple machined parts, and the bearing is sensitive to the machining precision and assembly precision of the machined parts, so that the stress is not uniform, which causes the linear module to be difficult to apply to high-speed application scenarios. In addition, the cooperative movement of the transmission shaft and the sealing belt is easy to produce a large noise, and there is a problem of noise pollution.
[0045] In order to solve the above technical problems, the embodiment of the present application provides a full-closed linear module, which relates to the technical field of linear modules and is mainly used for outputting linear motion.
[0046] As shown in Figures 1 to 4 The full-closed linear module 100 provided by the embodiment includes a sliding table 110, a cover plate 120, a sealing belt 130 and a transmission shaft 140.
[0047] The cover plate 120 is connected with the sliding table 110; the sealing belt 130 is arranged between the cover plate 120 and the sliding table 110, and the sliding table 110 is used to move relative to the sealing belt 130 along the length direction X of the sealing belt 130; the transmission shaft 140 is arranged between the cover plate 120 and the sliding table 110, and includes a shaft body 141, a shaft sleeve 142 and a bearing 143. The shaft body 141 is arranged in the shaft sleeve 142 and the bearing 143, and is connected with the sliding table 110. The outer circumferential side of the shaft sleeve 142 abuts against the sealing belt 130. The inner ring 1431 of the bearing 143 is connected with the shaft body 141, and the outer ring 1432 of the bearing 143 is connected with the shaft sleeve 142, so that the shaft sleeve 142 and the shaft body 141 are rotationally connected.
[0048] Exemplarily, the material of the sealing belt 130 can be steel (metal), rubber, composite material (combination of steel and rubber), synthetic fiber, etc., which is not specifically limited here.
[0049] It can be understood that the fully enclosed linear module 100 provided by the embodiment is realized by connecting the shaft body 141 of the transmission shaft 140 with the sliding table 110, and penetrating the shaft sleeve 142 and the bearing 143, and connecting the inner ring 1431 of the bearing 143 with the shaft body 141, and connecting the outer ring 1432 of the bearing 143 with the shaft sleeve 142, so that the shaft sleeve 142 is rotationally connected with the shaft body 141. In this way, when the transmission shaft 140 and the sealing belt 130 move cooperatively (that is, the transmission shaft 140 rolls on the surface of the sealing belt 130), the outer ring 1432 of the bearing 143 rotates, and the shaft body 141 and the inner ring 1431 of the bearing 143 remain stationary, without using a bearing seat, and only the assembly precision of the shaft body 141 and the shaft sleeve 142 needs to be ensured, so that the bearing 143 is more uniformly stressed, thereby improving the reliability and stability of the fully enclosed linear module 100, and enabling the fully enclosed linear module 100 to be applicable to high-speed application scenarios.
[0050] As shown in Figure 4 , Figure 8 and Figure 9 , in one embodiment, the shaft sleeve 142 includes a sleeve 1421 and a rubber coating layer 1422, the sleeve 1421 is connected with the outer ring 1432 of the bearing 143, and the rubber coating layer 1422 is arranged on the outer circumferential side of the sleeve 1421 and abuts against the sealing belt 130, and the Shore hardness of the rubber coating layer 1422 is 55A-65A.
[0051] Exemplarily, the Shore hardness of the rubber coating layer 1422 can be selected as any one value in 55A, 56A, 57A, 58A, 59A, 60A, 61A, 62A, 65A or any range formed by any two of them, which is not specifically limited here.
[0052] It should be noted that "55A-65A" refers to the hardness range of the rubber coating layer 1422 under the Shore Hardness A scale.
[0053] It can be understood that, by arranging the rubber coating layer 1422, the shaft sleeve 142 can be in elastic contact with the sealing belt 130, and the Shore hardness of the rubber coating layer 1422 is controlled within the range of 55A-65A. In this way, through the inventor's experiments and actual application verification, it can effectively reduce the noise generated during the operation of the fully enclosed linear module 100, and the noise can be controlled below 65 decibels, thereby providing a relatively quiet working environment for the workers, and improving the stability of the operation of the fully enclosed linear module 100.
[0054] Further, the thickness of the rubber coating layer 1422 is 0.5mm-1.5mm.
[0055] Exemplarily, the thickness of the encapsulation layer 1422 can be selected as any one of 0.5 mm, 0.55 mm, 0.6 mm, 0.7 mm, 0.76 mm, 0.8 mm, 1 mm, 1.1 mm, 1.2 mm, 1.5 mm or any range formed by any two of them, which is not specifically limited here.
[0056] It can be understood that by controlling the thickness of the encapsulation layer 1422 in the range of 0.5 mm to 1.5 mm, the transmission shaft 140 can be more stably attached to the surface of the sealing belt 130 for rolling, further improving the stability of the full-closed linear module 100 in operation.
[0057] As shown in the Figures 8 to 10 embodiment, the shaft body 141 includes a main body part 1411, a positioning part 1412 and a limiting part 1413, the positioning part 1412 is connected to the outer circumferential side of the main body part 1411, the limiting part 1413 is detachably connected with the main body part 1411, the positioning part 1412 and the limiting part 1413 are arranged in a spaced manner, the main body part 1411 is in interference fit with the inner ring 1431 of the bearing 143, and the inner ring 1431 of the bearing 143 abuts between the limiting part 1413 and the positioning part 1412.
[0058] It can be understood that the positioning part 1412 is arranged to facilitate the positioning of the bearing 143, thereby facilitating the assembly of the bearing 143 on the shaft body 141. The limiting part 1413 is arranged to axially limit the bearing 143, thereby reducing the risk of the bearing 143 being detached from the shaft body 141. The main body part 1411 is in interference fit with the inner ring 1431 of the bearing 143, so that the shaft body 141 and the inner ring 1431 of the bearing 143 can remain relatively stationary.
[0059] Of course, for the above embodiment, the main body part 1411 can also be welded, bonded, clamped or the like with the inner ring 1431 of the bearing 143, which can keep the shaft body 141 and the inner ring 1431 of the bearing 143 relatively stationary, and the connection manner between the shaft body 141 and the inner ring 1431 of the bearing 143 is not specifically limited here.
[0060] As shown in the Figure 10 embodiment, further, the limiting part 1413 is a snap ring, and the outer circumferential side of the main body part 1411 is provided with a ring groove 14111, and the snap ring is clamped in the ring groove 14111.
[0061] It can be understood that the cooperation of the snap ring and the clamping groove realizes the detachable connection between the snap ring and the main body part 1411, thereby facilitating the assembly and disassembly of the bearing 143.
[0062] Of course, for the above embodiment, the limiting portion 1413 can also be a pin provided in the main body portion 1411, and the structure of the limiting portion is not specifically limited here.
[0063] As shown in Figure 1 , Figure 7 and Figure 8 further, the fully-enclosed linear module 100 further includes a threaded fastener 144 provided in the main body portion 1411 and threadedly connected with the sliding table 110.
[0064] Exemplarily, the threaded fastener 144 can be a screw, a bolt, a screw, or the like element having an external thread, and is not specifically limited here.
[0065] It can be understood that by using the threaded fastener 144 provided in the main body portion 1411 and threadedly connected with the sliding table 110, the connection between the shaft body 141 and the sliding table 110 is achieved.
[0066] As shown in Figures 8 to 10 , ,
[0067] and further, the threaded fastener 144 includes a nut 1441 and a screw rod 1442 connected with each other, the sliding table 110 is provided with a relief groove 111, a portion of the main body portion 1411 is located in the relief groove 111, the portion of the main body portion 1411 located in the relief groove 111 is provided with a first connecting hole 14112, the bottom of the relief groove 111 is provided with a second connecting hole 112, the nut 1441 is located in the relief groove 111 and abuts against the main body portion 1411, and the screw rod 1442 is provided in the first connecting hole 14112 and the second connecting hole 112 and is threadedly connected with the hole wall of the second connecting hole 112.
[0068] Figure 8 , Figure 10 , Figure 11 and further, the portion of the main body portion 1411 located in the relief groove 111 is provided with a stepped structure, the stepped structure includes a first contact surface 14113 and a second contact surface 14114 oppositely arranged, the first connecting hole 14112 is located between the first contact surface 14113 and the second contact surface 14114, the first contact surface 14113 is in surface contact with the nut 1441, and the second contact surface 14114 is in surface contact with the bottom of the relief groove 111.
[0069] It can be understood that the main body 1411 is in surface contact with the screw cap 1441 through the first contact surface 14113 and in surface contact with the groove bottom surface of the avoidance groove 111 through the second contact surface 14114. Compared with the point contact and line contact mode, the surface contact has higher stability, can make the transmission shaft 140 more stably adhere to the surface of the sealing belt 130 for rolling, and thus improves the stability of the operation of the full-closed linear module 100.
[0070] As shown in Figure 8 , Figure 10 and Figure 11 , further, the step structure further includes a third contact surface 14115 and a fourth contact surface 14116, the third contact surface 14115 and the fourth contact surface 14116 are located on the side of the limiting portion 1413 away from the bearing 143, the third contact surface 14115 is connected with the first contact surface 14113 perpendicularly, the fourth contact surface 14116 is connected with the second contact surface 14114 perpendicularly, and the third contact surface 14115 and the fourth contact surface 14116 are in surface contact with the part of the slide table 110 provided with the avoidance groove 111.
[0071] It can be understood that the main body 1411 is in surface contact with the slide table 110 through the third contact surface 14115 and the fourth contact surface 14116. Compared with the point contact and line contact mode, the surface contact has higher stability, can make the transmission shaft 140 more stably adhere to the surface of the sealing belt 130 for rolling, and thus further improves the stability of the operation of the full-closed linear module 100. Meanwhile, the third contact surface 14115 and the fourth contact surface 14116 also play a role in positioning the shaft body 141, thereby facilitating the assembly of the shaft body 141 to the slide table 110.
[0072] As shown in Figure 2 and Figure 3 , in an embodiment, the transmission shaft 140 is provided in plurality, the plurality of transmission shafts 140 are arranged at intervals along the length direction X of the sealing belt 130, and at least two transmission shafts 140 are located on different sides of the sealing belt 130. In this way, under the cooperation of the plurality of transmission shafts 140 and the sealing belt 130, the full-closed linear module 100 has higher stability when operating.
[0073] Exemplarily, the number of the transmission shaft 140 can be two, three, four, five, etc., and there is no specific limitation here.
[0074] As shown in Figure 5 and Figure 6As shown, in one embodiment, the full-enclosed linear module 100 further comprises a module body 150, a guide rail 161, a sliding block 162, a coil bracket 163, an electromagnetic coil 164 and a magnetic rail 165, the module body 150 defines a receiving cavity 151, and is provided with an opening 152 in communication with the receiving cavity 151, the sliding table 110 is arranged through the opening 152, the guide rail 161, the sliding block 162, the coil bracket 163, the electromagnetic coil 164 and the magnetic rail 165 are located in the receiving cavity 151, the guide rail 161 is connected with the module body 150, the sliding block 162 is in sliding fit with the guide rail 161 and is connected with the sliding table 110, the coil bracket 163 is connected on the sliding table 110, the electromagnetic coil 164 is connected on the coil bracket 163, the magnetic rail 165 is connected with the module body 150, and the magnetic rail 165 and the electromagnetic coil 164 are oppositely arranged, and the sealing belt 130 is connected with the module body 150 to cover the opening 152.
[0075] It can be understood that the electromagnetic coil 164 and the magnetic rail 165 constitute a linear motor, since the electromagnetic coil 164 serves as a mover of the linear motor and has a plurality of copper coils wound thereon, and the magnetic rail 165 serves as a stator of the linear motor and has a plurality of permanent magnets or electromagnets arranged in an array. In this way, when an alternating current or a pulse current is applied to the electromagnetic coil 164 through the control system, a changing magnetic field can be generated inside the electromagnetic coil 164, the moving magnetic field generated by the electromagnetic coil 164 and the static magnetic field generated by the magnetic rail 165 interact with each other, and according to electromagnetic induction and magnetic force, the electromagnetic coil 164 can be subjected to a force in the direction of the magnetic rail 165 to drive the sliding table 110 to move along the length direction X of the sealing belt 130, thereby driving the load connected with the sliding table 110 to perform linear motion.
[0076] Of course, for the above embodiment, in addition to driving the sliding table 110 to move by using the linear motor, a nut can also be arranged on the sliding table 110, and a screw rod threadedly connected with the nut is driven to rotate by a rotating motor, so that the sliding table 110 can also be driven to move, thereby outputting linear motion, and the power source of the sliding table 110 is not specifically limited herein.
[0077] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.
[0078] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and that those skilled in the art can make changes, modifications, substitutions and variations to the above-described embodiments within the scope of the present application.
Claims
1. A totally enclosed linear module, characterized by, The application relates to a full-closed linear module. The full-closed linear module comprises a sliding table, a cover plate connected with the sliding table, a sealing belt arranged between the cover plate and the sliding table, and a transmission shaft arranged between the cover plate and the sliding table. The transmission shaft comprises a shaft body, a shaft sleeve and a bearing. The shaft sleeve is connected with the outer ring of the bearing. The shaft sleeve comprises a sleeve and a rubber layer.
2. The totally-enclosed linear module of claim 1, wherein, The rubber layer is arranged on the outer periphery of the sleeve and abuts against the sealing belt.
3. The totally enclosed linear module of claim 2, wherein, The thickness of the rubber layer is 0.5-1.5 mm.
4. The totally-enclosed linear module of claim 1, wherein, The shaft body comprises a main body, a positioning part and a limiting part.
5. The totally enclosed linear module of claim 4, wherein, The limiting part is detachably connected with the main body.
6. The totally-enclosed linear module of claim 5, wherein, The limiting part and the positioning part are arranged at intervals.
7. The totally-enclosed linear module of claim 6, wherein, The inner ring of the bearing abuts against the limiting part and the positioning part.
8. The totally-enclosed linear module of claim 7, wherein, The full-closed linear module further comprises a threaded fastener.
9. The totally-enclosed linear module of claim 4, wherein, The threaded fastener is arranged in the main body and is threadedly connected with the sliding table.
10. The totally enclosed linear module according to any one of claims 1 to 9, characterized in that, The threaded fastener comprises a nut and a screw rod. The main body is arranged in a recess of the sliding table. The main body arranged in the recess is provided with a first connecting hole. The bottom of the recess is provided with a second connecting hole. The nut is arranged in the recess and abuts against the main body. The screw rod is arranged in the first connecting hole and the second connecting hole and is threadedly connected with the hole wall of the second connecting hole. The main body arranged in the recess is provided with a stepped structure. The stepped structure comprises a first contact surface and a second contact surface. The first contact surface is in surface contact with the nut. The second contact surface is in surface contact with the bottom of the recess. The stepped structure further comprises a third contact surface and a fourth contact surface. The third contact surface and the fourth contact surface are arranged on the side of the limiting part away from the bearing. The third contact surface is perpendicularly connected with the first contact surface. The fourth contact surface is perpendicularly connected with the second contact surface. The third contact surface and the fourth contact surface are in surface contact with the part of the sliding table provided with the recess. The limiting part is a snap ring. The outer periphery of the main body is provided with a ring groove. The snap ring is arranged in the ring groove.