Closed-loop sliding block

Abstract

The closed-loop type sliding block comprises a sliding block body and end covers connected to the two end faces of the sliding block body, the left side and the right side of the interior of the sliding block body are each provided with a set of outer raceway holes, and each set of outer raceway holes extend in the length direction of the sliding block body; a sliding groove used for being connected with an external guide rail is formed in the inner wall of the sliding block body, and the left side and the right side of the sliding groove are each provided with a set of inner raceway holes. Reversers matched with the inner raceway hole and the outer raceway hole are arranged on the end cover, and the inner raceway hole, the outer raceway hole and the reversers at the two ends of the sliding block main body jointly form a closed ball channel; wherein an upper dustproof piece and a pair of lower dustproof pieces are arranged on the sliding block main body, two dustproof devices are arranged at the positions, corresponding to steel ball grooves, of the upper side of the inner wall of the sliding block, the top contact face of a protruding lip of the upper dustproof plate abuts against the upper end face of the guide rail, and the side contact face of a protruding lip of the lower dustproof plate abuts against the two side faces of the guide rail. Therefore, all-directional protection is formed.

Description

Technical Field

[0001] The invention relates to the technical field of sliders, and in particular to a closed-loop slider. Background Art

[0002] As a key component in automation equipment, precision machinery, and robotics, linear guides reduce friction by rolling balls or rollers between guide rails and sliders to achieve efficient and smooth linear motion.

[0003] However, conventional linear slide rails have significant dustproof performance deficiencies and complex ball circulation mechanism problems. Specifically, conventional slide rails are usually only equipped with one dustproof structure (such as an upper dustproof plate or a lower dustproof plate). For example, the existing patent (authorization announcement number CN107269692B) has a linear slide rail with an upper dustproof element, which is characterized in that it includes: a rail bar, which extends in one direction to form a long strip structure, and the extending direction is defined as the axial direction. The rail bar is provided with a plurality of rolling grooves and a fixed protrusion on both sides of the axial direction, and the fixed protrusion protrudes laterally on both sides of the axial direction; a slider module is sleeved on the rail bar and can reciprocate relative to the rail bar, the slider module has an upper top surface, and a clamping groove extending from both sides of the upper top surface in the axial direction. The slider module has a slider body and two end covers respectively arranged on both sides of the axial direction of the slider body. End face; an upper dustproof element, having a main body that matches the upper top surface, and a clamping part extending from the main body on both sides in the axial direction, the clamping part having an axial length greater than the slider body, the fixed protrusion is U-shaped, the clamping groove and the clamping part are C-shaped, the clamping part is embedded in the clamping groove, and the clamping part has a contact end that contacts the fixed protrusion, the main body is provided with two dustproof lips arranged at a distance corresponding to the upper surface of the rail, and the end of the dustproof lip contacts the upper surface, wherein the fixed protrusion of the rail is accommodated in the clamping groove of the slider module, the upper dustproof element can be fixed to the slider module by the cooperation between the clamping part and the clamping groove, and the setting of the dustproof lip and the contact end can provide two ways to prevent foreign matter from entering the running path of the rolling element, so as to ensure the smooth operation of the slider module and improve the service life of the slider module.

[0004] However, it fails to solve the problem of multi-directional dust prevention. This single dust prevention design cannot effectively prevent dust and oil from entering the slider from multiple directions, resulting in increased wear of the balls or rollers and affecting the normal operation of the slide rails. In addition, in order to achieve the circulating action of the balls, multiple retaining racks need to be installed additionally, which not only increases the difficulty of assembly, but also introduces more potential wear points. Summary of the invention

[0005] The present invention aims to solve the problems existing in the above-mentioned prior art and provides a closed-loop slider with a double-layer dustproof structure. By optimizing the dustproof design and simplifying the assembly process, the dustproof performance and service life of the slider are significantly improved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the closed-loop slider comprises: a slider body, end covers connected to both end surfaces of the slider body, a group of outer raceway holes are respectively provided on the left and right sides of the inside of the slider body, and each group of outer raceway holes extends along the length direction of the slider body; the inner wall of the slider body is provided with a sliding groove for connecting with an external guide rail, and a group of inner raceway holes are respectively provided on the left and right sides of the sliding groove; a reverser matching the inner raceway hole and the outer raceway hole is provided on the end cover, and the inner raceway hole, the outer raceway hole and the reversers at both ends of the slider body together form a closed ball channel; Among them, the slider body is provided with an upper dustproof sheet and a pair of lower dustproof sheets, the upper dustproof sheet is located at the bottom of the sliding groove, and its two ends are connected to the end covers at both ends of the slider body, the upper dustproof sheet is provided with an upper protruding lip protruding inward from the outside of the sliding groove, and a top contact surface is provided on the top of the upper protruding lip, and the top contact surface abuts the upper surface of the guide rail; the pair of lower dustproof sheets are respectively located on both sides of the sliding groove, and their two ends are connected to the end covers at both ends of the slider body, the lower dustproof sheet is provided with a side protruding lip protruding outward from the inside of the sliding groove, and a side contact surface is provided on the top of the side protruding lip, and the side contact surface abuts the side surface of the guide rail.

[0007] Preferably, an upper retaining frame is integrally formed on the upper dustproof sheet, and first fixing parts are provided at both ends of the upper retaining frame. A first positioning groove is provided at the bottom of the sliding groove of the slider body, and first fixing grooves are correspondingly provided on the end covers at both ends of the slider body. The upper retaining frame is arranged on the first positioning groove, and the first fixing parts at both ends of the upper retaining frame are respectively inserted into the end covers at both ends and clamped with the first fixing grooves at the corresponding ends.

[0008] Preferably, the bottom of the upper dustproof sheet is provided with an upper support portion molded with the upper retaining frame, and the upper support portion is connected to the upper protruding lip to form a first deformable area; when the top contact surface contacts the upper surface of the guide rail, the first deformable area is squeezed and deformed, so that the upper protruding lip moves from the outside to the inside of the sliding groove.

[0009] Preferably, a lower retaining frame is integrally formed on the lower dustproof sheet, and second fixing parts and third fixing grooves are provided at both ends of the lower retaining frame. Second positioning grooves are provided on the groove walls on both sides of the sliding groove of the slider body, and second fixing grooves and third fixing parts are correspondingly provided on the end covers at both ends of the slider body. The lower retaining frame is arranged on the second positioning groove, and the second fixing parts at both ends of the lower retaining frame are respectively inserted into the end covers at both ends and clamped with the second fixing grooves at the corresponding ends, and the third fixing grooves at both ends of the lower retaining frame are respectively connected to the third fixing parts at the corresponding ends of the end covers at both ends.

[0010] Preferably, the bottom of the lower dustproof sheet is provided with a lower support portion molded with the lower retaining frame, and the lower support portion is connected to the side protruding lip to form a second deformable area. When the side contact surface contacts the side surface of the guide rail, the second deformable area is squeezed and deformed, so that the side protruding lip moves from the inside to the outside of the sliding groove.

[0011] Preferably, the upper supporting portion has a first supporting inner side surface and a first supporting outer side surface, and the first lip inner side surface and the first lip outer side surface are respectively arranged on both sides of the top contact surface of the upper protruding lip, wherein the first lip inner side surface is located on the inner side of the top contact surface and is connected to the first support inner side surface to form an angle, and the first lip outer side surface is located on the outer side of the top contact surface and is connected to the first support outer side surface, and the connection between the first lip inner side surface and the first support inner side surface and the connection between the first lip outer side surface and the first support outer side surface jointly form the first deformable area.

[0012] Preferably, the lower supporting portion has a second supporting inner side surface and a second supporting outer side surface, and the second lip inner side surface and the second lip outer side surface are respectively arranged on both sides of the lateral contact surface of the side protruding lip, wherein the second lip inner side surface is located on the inner side of the lateral contact surface and is connected to the second supporting inner side surface, the second lip outer side surface is located on the outer side of the lateral contact surface and is connected to the second supporting outer side surface to form an angle, and the connection between the second lip inner side surface and the second supporting inner side surface, and the connection between the second lip outer side surface and the second supporting outer side surface jointly form the second deformable area.

[0013] Preferably, a group of inner raceway holes are respectively provided on the left and right sides of the sliding groove, and each group of inner raceway holes includes two upper inner cylindrical holes and a lower inner cylindrical hole arranged in parallel. The slider body is provided with a first hemispherical groove and a second hemispherical groove on the left and right sides of the sliding groove. The upper retaining frame is provided with a first ball retaining groove on both sides, and the first hemispherical groove and the first ball retaining groove cooperate to form the upper inner cylindrical hole. The lower retaining frame is provided with a second ball retaining groove on both sides, and the second hemispherical groove and the second ball retaining groove (123) cooperate to form the lower inner cylindrical hole.

[0014] Preferably, a first positioning groove is formed on the lower end surface of the upper retainer, and first connecting holes are provided on both sides, the first connecting holes are radially opened from the direction of the first positioning groove to the upper end surface, the upper dustproof sheet is formed in the first positioning groove, and a first connecting portion integrally formed with the first connecting hole is provided on the upper supporting portion of the upper dustproof sheet; A second positioning groove is formed on the lower end surface of the lower retaining frame, and a second connecting hole is provided on the outer side of the lower retaining frame. The second connecting hole is radially opened from the direction of the second positioning groove toward the upper end surface. The lower dustproof sheet is formed in the second positioning groove, and a second connecting portion integrally formed with the second connecting hole is provided on the lower supporting portion of the lower dustproof sheet.

[0015] Preferably, a dustproof plate is provided on the end cover, and the dustproof plate is installed at the outer end of the reverser. The dustproof plate is provided with a guide rail hole adapted to the cross-sectional shape of the guide rail, and a lip is provided along the edge of the guide rail hole; the lip includes an inner lip close to the inner side of the dustproof plate and an outer lip close to the outer side of the dustproof plate, the inner lip is inclined toward the side of the slider body, and the outer lip is inclined toward the outside, and the outer side surface of the dustproof plate is provided with a concave first stress release groove along the root of the lip, and the inner side surface is provided with a concave second stress release groove along the cross-sectional direction of the guide rail.

[0016] The present invention has the following beneficial effects: 1. Two dust-proof devices are set at the position corresponding to the steel ball groove on the upper side of the inner wall of the slider, one of which is located above the guide rail, and the other is located on both sides of the guide rail. The top contact surface of the protruding lip of the upper dust-proof plate abuts against the upper end surface of the guide rail, and the side contact surface of the protruding lip of the lower dust-proof plate abuts against the two side surfaces of the guide rail, thereby forming all-round protection.

[0017] 2. The upper dust shield is provided with a first deformable area, which can reduce the contact force between the top contact surface and the guide rail, thereby reducing the wear caused by friction; the lower dust shield is provided with a second deformable area, which reduces the contact force on the side contact surface in a similar manner, further reducing wear.

[0018] 3. In order to simplify the assembly process and improve stability, the upper dust plate and upper retainer, the lower dust plate and lower retainer are all manufactured using an integrated two-color injection molding process, which means that the two parts that originally needed to be manufactured and assembled separately are now combined into one, reducing the assembly steps and ensuring higher stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a closed-loop slider of the present invention; Figure 2 A cross-sectional view of a closed-loop slider of the present invention; Figure 3 Based Figure 2 A magnified view of the structure at center A; Figure 4 Based Figure 2 A magnified view of the structure at B in the middle; Figure 5 This is a schematic diagram of the internal structure of a closed-loop slider of the present invention; Figure 6 It is a structural schematic diagram of the inner raceway hole; Figure 7 This is a structural exploded diagram of a closed-loop slider of the present invention; Figure 8 A bottom view of a closed-loop slider of the present invention; Fig. 9 The front view of the upper dust sheet and the upper retainer; Fig.10 The exploded view of the upper dust shield and the upper retainer; Fig.11 It is a structural schematic diagram of the lower dustproof sheet and the lower retaining frame; Fig.12 The exploded view of the lower dust shield and the lower retainer; Fig.13 Schematic diagram of the back structure of the dustproof plate.

[0020] Description of reference numerals: 1. Slider body; 10. Upper dustproof sheet; 11. Lower dustproof sheet; 12. Upper retainer; 13. Lower retainer; 100. Outer raceway hole; 101. Sliding groove; 102. Inner raceway hole; 103. Upper protruding lip; 104. Top contact surface; 105. Side protruding lip; 106. Side contact surface; 107. First fixing part; 108. First positioning groove; 109. Upper support part; 110. First deformable area; 111. Second fixing part; 112. Second positioning groove; 113. Lower support part; 114. Second deformable area; 115. Third fixing groove; 116. First connecting part; 117. Roller ball channel; 118, upper inner cylindrical hole; 119, lower inner cylindrical hole; 120, first hemispherical groove; 121, second hemispherical groove; 122, first ball retaining groove; 123, second ball retaining groove; 124, first positioning groove; 125, first connecting hole; 126, second positioning groove; 127, second connecting hole; 128, first support inner side surface; 129, first support outer side surface; 130, first lip inner side surface; 131, first lip outer side surface; 132, second support inner side surface; 133, second support outer side surface; 134, second lip inner side surface; 135, second lip outer side surface; 136, second connecting portion; 2. End cover; 200. Reverser; 201. First fixing groove; 202. Second fixing groove; 203. Third fixing portion; 204. Dust plate; 205. Guide rail hole; 206. Inner lip; 207. Outer lip; 208. First stress release groove; 209. Second stress release groove; 3. Guide rail. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] like Figures 1 to 13 As shown, a closed-loop slider comprises: a slider body 1, an end cover 2 connected to the two end surfaces of the slider body 1, a group of outer raceway holes 100 are respectively provided on the left and right sides of the inside of the slider body 1, and each group of outer raceway holes 100 extends along the length direction of the slider body 1; the inner wall of the slider body 1 is provided with a sliding groove 101 for connecting with the external guide rail 3, and a group of inner raceway holes 102 are respectively provided on the left and right sides of the sliding groove 101; a reverser 200 matching the inner raceway hole 102 and the outer raceway hole 100 is provided on the end cover 2, and the inner raceway hole 102, the outer raceway hole 100 and the reversers 200 at both ends of the slider body 1 jointly form a closed ball channel 117; wherein, an upper dustproof sheet 1 is provided on the slider body 1 0 and a pair of lower dustproof sheets 11, the upper dustproof sheet 10 is located at the bottom of the sliding groove 101, and both ends are connected to the end covers 2 at both ends of the slider body 1, the upper dustproof sheet 10 is provided with an upper protruding lip 103 protruding inward from the outer side of the sliding groove 101, and a top contact surface 104 is provided on the top of the upper protruding lip 103, and the top contact surface 104 abuts the upper surface of the guide rail 3; a pair of lower dustproof sheets 11 are respectively located on both sides of the sliding groove 101, and both ends are connected to the end covers 2 at both ends of the slider body 1, the lower dustproof sheet 11 is provided with a side protruding lip 105 protruding outward from the inner side of the sliding groove 101, and a side contact surface 106 is provided on the top of the side protruding lip 105, and the side contact surface 106 abuts the side surface of the guide rail 3.

[0023] The slider includes a slider body 1 and end covers 2 connected to its two end surfaces. A group of outer raceway holes 100 extending along the length direction are respectively provided on the left and right sides of the slider body 1. The inner wall is provided with a sliding groove 101 for connecting with the external guide rail 3. A group of inner raceway holes 102 are respectively provided on the left and right sides of the sliding groove 101. The end cover 2 is provided with a reverser 200 matching these inner raceway holes 102 and the outer raceway holes 100, so that the inner raceway holes 102, the outer raceway holes 100 and the reversers 200 at both ends of the slider body 1 form a closed ball channel 117 to ensure smooth circulation of the balls inside the slider. In this embodiment, an upper dustproof sheet 10 and a pair of lower dustproof sheets 11 are provided on the slider body 1 to achieve all-round dustproof protection. The upper dustproof sheet 10 is located at The bottom of the sliding groove 101 is connected to the end covers 2 at both ends of the slider body 1 at both ends, and is provided with an upper protruding lip 103 protruding inward from the outer side of the sliding groove 101, and the top contact surface 104 abuts the upper surface of the guide rail 3; a pair of lower dustproof sheets 11 are respectively located on both sides of the sliding groove 101, and both ends are connected to the end covers 2 at both ends of the slider body 1, and are provided with side protruding lips 105 protruding outward from the inner side of the sliding groove 101, and the side contact surface 106 abuts the side surface of the guide rail 3. The upper dustproof sheet 10 and the lower dustproof sheet 11 can effectively prevent dust and oil from entering the interior of the slider, and because the protruding lip on each dustproof sheet has a deformable area, it is squeezed and deformed when contacting the guide rail 3, which reduces the friction and wear between the contact surfaces and extends the service life of the equipment.

[0024] Specifically, Figures 2 to 10 As shown, an upper retaining frame 12 is integrally formed on the upper dustproof sheet 10, and first fixing portions 107 are provided at both ends of the upper retaining frame 12. A first positioning groove 108 is provided at the bottom of the sliding groove 101 of the slider body 1, and first fixing grooves 201 are correspondingly provided on the end covers 2 at both ends of the slider body 1. The upper retaining frame 12 is arranged on the first positioning groove 108, and the first fixing portions 107 at both ends of the upper retaining frame 12 are respectively inserted into the end covers 2 at both ends and clamped with the first fixing grooves 201 at the corresponding ends.

[0025] The upper dust sheet 10 and the upper retainer 12 adopt an integrated two-color injection molding design, which not only simplifies the assembly process, but also improves the stability and reliability of the overall structure. First fixing parts 107 are provided at both ends of the upper retainer 12, and a first positioning groove 108 is provided at the bottom of the sliding groove 101 of the slider body 1. At the same time, first fixing grooves 201 are correspondingly provided on the end covers 2 at both ends of the slider body 1. During the installation process, the upper retainer 12 is first placed in the first positioning groove 108 at the bottom of the sliding groove 101 of the slider body 1 to ensure its accurate positioning. Then, the first fixing parts 107 at both ends of the upper retainer 12 are respectively inserted into the first fixing grooves 201 on the end covers 2 at both ends of the slider body 1 and fixed by clamping. This design enables the upper dust sheet 10 and the upper retainer 12 to be tightly connected, and the fixing grooves of the end covers 2 further enhance the stability of the structure, avoiding loosening or displacement problems caused by vibration or other external forces. In addition, the one-piece molding design reduces the number of parts, reduces the difficulty and cost of assembly, and also reduces potential wear points, thereby improving the running stability and service life of the entire system.

[0026] Specifically, Figure 2 and Figure 3 As shown, the bottom of the upper dustproof sheet 10 is provided with an upper support portion 109 which is molded and connected to the upper retaining frame 12, and the upper support portion 109 is connected to the upper protruding lip 103 to form a first deformable area 110; when the top contact surface 104 contacts the upper surface of the guide rail 3, the first deformable area 110 is squeezed and deformed, so that the upper protruding lip 103 moves from the outside to the inside of the sliding groove 101.

[0027] The bottom of the upper dustproof sheet 10 is provided with an upper support portion 109 connected to the upper retaining frame 12. The upper support portion 109 is connected to the upper protruding lip 103 to form a first deformable area 110. By introducing a flexible connection portion between the upper dustproof sheet 10 and the upper retaining frame 12, dynamic adjustment of the contact surface is achieved. When the contact surface at the top of the upper dustproof sheet 10 contacts the upper surface of the guide rail 3, the first deformable area 110 will be squeezed and deformed, so that the upper protruding lip 103 can move from the outside to the inside of the sliding groove 101. This not only effectively reduces the friction between the top contact surface 104 and the guide rail 3 and reduces the risk of wear, but also can adaptively adjust the contact pressure under different working conditions to ensure a continuous and stable dustproof effect. In addition, the design of this deformable area not only improves the dustproof performance, but also extends the service life of the equipment. The slider can perform well in high-precision and long-life applications, providing more reliable protection and higher performance.

[0028] Specifically, Figure 2 , Figure 4 , Figure 5 , Figure 6 , Fig.11 and Fig.12 As shown, a lower retaining frame 13 is integrally formed on the lower dustproof sheet 11, and second fixing portions 111 and third fixing grooves 115 are provided at both ends of the lower retaining frame 13. Second positioning grooves 112 are provided on the groove walls on both sides of the sliding groove 101 of the slider body 1, and second fixing grooves 202 and third fixing portions 203 are correspondingly provided on the end covers 2 at both ends of the slider body 1. The lower retaining frame 13 is arranged on the second positioning groove 112, and the second fixing portions 111 at both ends of the lower retaining frame 13 are respectively inserted into the end covers 2 at both ends and clamped with the second fixing grooves 202 at the corresponding ends, and the third fixing grooves 115 at both ends of the lower retaining frame 13 are respectively connected to the third fixing portions 203 at the corresponding ends of the end covers 2 at both ends.

[0029] The lower dust sheet 11 and the lower retaining frame 13 adopt an integrated two-color injection molding design, which not only simplifies the assembly process, but also improves the stability and reliability of the structure. The second fixing portion 111 and the third fixing groove 115 are provided at both ends of the lower retaining frame 13, and the second positioning groove 112 is provided on the groove walls on both sides of the sliding groove 101 of the slider body 1. At the same time, the second fixing groove 202 and the third fixing portion 203 are correspondingly provided on the end covers 2 at both ends of the slider body 1. During the installation process, the lower retaining frame 13 is first placed in the second positioning grooves 112 on the groove walls on both sides of the sliding groove 101 of the slider body 1 to ensure its accurate positioning, and then the second fixing parts 111 at both ends of the lower retaining frame 13 are respectively inserted into the second fixing grooves 202 on the end covers 2 at both ends of the slider body 1 and fixed by clamping, and at the same time, the third fixing grooves 115 at both ends of the lower retaining frame 13 are respectively connected to the third fixing parts 203 at the corresponding ends of the end covers 2, further enhancing the stability of the structure. This design enables the lower dust sheet 11 and the lower retaining frame 13 to be tightly connected, and the loosening or displacement problems are further prevented by the fixing grooves and fixing parts of the end covers 2. The one-piece design reduces the number of parts, reduces the difficulty and cost of assembly, and also reduces potential wear points, thereby improving the running stability and service life of the entire system.

[0030] Furthermore, if Figure 2 , Figure 4 and Fig.11 As shown, the bottom of the lower dustproof sheet 11 is provided with a lower support portion 113 which is molded and connected to the lower retaining frame 13. The lower support portion 113 is connected to the side protruding lip 105 to form a second deformable area 114. When the side contact surface 106 contacts the side surface of the guide rail 3, the second deformable area 114 is squeezed and deformed, so that the side protruding lip 105 moves from the inner side to the outer side of the sliding groove 101.

[0031] The design of the lower dustproof sheet 11 is to form a second deformable area 114 by providing a lower support portion 113 at the bottom thereof which is molded and connected to the lower retaining frame 13. The lower support portion 113 is connected to the side protruding lip 105 to constitute this flexible connection portion. When the side contact surface 106 contacts the side surface of the guide rail 3, the second deformable area 114 will be squeezed and deformed, so that the side protruding lip 105 can move from the inside to the outside of the sliding groove 101. By dynamically adjusting the pressure of the contact surface, the friction between the side contact surface 106 and the guide rail 3 is effectively reduced, the risk of wear is reduced, and it is ensured that the contact pressure is adaptively adjusted under different working conditions, thereby providing a continuous and stable dustproof effect.

[0032] Furthermore, if Figure 2 , Fig. 9 and Fig.10 As shown, the upper support portion 109 has a first support inner side surface 128 and a first support outer side surface 129, and the first lip inner side surface 130 and the first lip outer side surface 131 are respectively arranged on both sides of the top contact surface 104 of the upper protruding lip 103, wherein the first lip inner side surface 130 is located on the inner side of the top contact surface 104, and is connected to the first support inner side surface 128 to form an angle, and the first lip outer side surface 131 is located on the outer side of the top contact surface 104, and is connected to the first support outer side surface 129, and the connection between the first lip inner side surface 130 and the first support inner side surface 128, and the connection between the first lip outer side surface 131 and the first support outer side surface 129 jointly form a first deformable area 110.

[0033] The upper support portion 109 has a first support inner side surface 128 and a first support outer side surface 129. The top contact surface 104 of the upper protruding lip portion 103 is provided with a first lip inner side surface 130 and a first lip outer side surface 131 on both sides thereof. The first lip inner side surface 130 is located on the inner side of the top contact surface 104 and is connected to the first support inner side surface 128 to form an angle. The first lip outer side surface 131 is located on the outer side of the top contact surface 104 and is connected to the first support outer side surface 129. This design makes the connection between the first lip inner side surface 130 and the first support inner side surface 128, as well as The connection between the first lip outer surface 131 and the first support outer surface 129 jointly forms a first deformable area 110. When the top contact surface 104 contacts the upper surface of the guide rail 3, the first deformable area 110 will be squeezed and deformed, thereby allowing the upper protruding lip 103 to move from the outside to the inside of the sliding groove 101. This mechanism effectively reduces the friction between the top contact surface 104 and the guide rail 3, reduces the risk of wear, and can adaptively adjust the contact pressure under different working conditions, ensuring a continuous and stable dustproof effect, thereby improving the operating smoothness and reliability of the overall system.

[0034] Furthermore, if Figure 2 , Figure 4 and Fig.11 As shown, the lower support portion 113 has a second support inner side surface 132 and a second support outer side surface 133, and the second lip inner side surface 134 and the second lip outer side surface 135 are respectively arranged on both sides of the lateral contact surface 106 of the side protruding lip 105, wherein the second lip inner side surface 134 is located on the inner side of the lateral contact surface 106 and is connected to the second support inner side surface 132, and the second lip outer side surface 135 is located on the outer side of the lateral contact surface 106 and is connected to the second support outer side surface 133 to form an angle, and the connection between the second lip inner side surface 134 and the second support inner side surface 132, and the connection between the second lip outer side surface 135 and the second support outer side surface 133 jointly form a second deformable area 114.

[0035] The lower support portion 113 has a second support inner side surface 132 and a second support outer side surface 133. The second lip inner side surface 134 and the second lip outer side surface 135 are respectively arranged on both sides of the lateral contact surface 106 of the side protruding lip portion 105. The second lip inner side surface 134 is located on the inner side of the lateral contact surface 106 and is connected to the second support inner side surface 132; the second lip outer side surface 135 is located on the outer side of the lateral contact surface 106 and is connected to the second support outer side surface 133 to form an angle. This design makes the second lip inner side surface 134 and the second support inner side surface 135 are connected to each other. The connection between the surface 132 and the connection between the second lip outer surface 135 and the second support outer surface 133 together form a second deformable area 114. When the side contact surface 106 contacts the side surface of the guide rail 3, the second deformable area 114 will be squeezed and deformed, thereby allowing the side protruding lip 105 to move from the inside to the outside of the sliding groove 101, which not only reduces the friction between the side contact surface 106 and the guide rail 3 and reduces the risk of wear, but also can adaptively adjust the contact pressure under different working conditions to ensure a continuous and stable dust-proof effect.

[0036] Furthermore, if Figure 2 , Figure 5 and Figure 6 As shown, a group of inner raceway holes 102 are respectively provided on the left and right sides of the sliding groove 101, and each group of inner raceway holes 102 includes two upper inner cylindrical holes 118 and lower inner cylindrical holes 119 arranged in parallel. The slider body 1 is provided with a first hemispherical groove 120 and a second hemispherical groove 121 on the left and right sides of the sliding groove 101, and a first ball retaining groove 122 is provided on both sides of the upper retaining frame 12, and the first hemispherical groove 120 and the first ball retaining groove 122 cooperate to form the upper inner cylindrical hole 118, and a second ball retaining groove 123 is provided on both sides of the lower retaining frame 13, and the second hemispherical groove 121 and the second ball retaining groove 123 (123) cooperate to form the lower inner cylindrical hole.

[0037] A group of inner raceway holes 102 are respectively provided on the left and right sides of the sliding groove 101, and each group of inner raceway holes 102 includes two upper inner cylindrical holes 118 and lower inner cylindrical holes 119 arranged in parallel. The slider body 1 is provided with a first hemispherical groove 120 and a second hemispherical groove 121 on the left and right sides of the sliding groove 101, which are used to cooperate with the retaining frame to form a complete raceway hole structure. The first ball retaining grooves 122 are provided on both sides of the upper retaining frame 12. These first ball retaining grooves 122 and the first hemispherical grooves 120 on the slider body 1 are provided. They cooperate to form an upper inner cylindrical hole 118; similarly, second ball retaining grooves 123 are provided on both sides of the lower retaining frame 13, and these second ball retaining grooves 123 cooperate with the second hemispherical grooves 121 on the slider body 1 to form a lower inner cylindrical hole 119, ensuring that the balls can circulate smoothly inside the slider, and through the precise matching structure, the stability and accuracy of the ball movement are improved, the number of parts is reduced, the manufacturing cost and assembly difficulty are reduced, and the overall stability and reliability of the system are enhanced.

[0038] Furthermore, if Figures 9 to 12 As shown, a first positioning groove 124 is formed on the lower end surface of the upper retaining frame 12, and first connecting holes 125 are arranged on both sides, the first connecting holes 125 are radially opened from the direction of the first positioning groove 124 to the upper end surface, the upper dustproof sheet 10 is formed in the first positioning groove 124, and the upper support portion 109 of the upper dustproof sheet 10 is provided with a first connecting portion 116 integrally formed with the first connecting hole 125; a second positioning groove 126 is formed on the lower end surface of the lower retaining frame 13, and a second connecting hole 127 is arranged on the outer side of the lower retaining frame 13, the second connecting hole 127 is radially opened from the direction of the second positioning groove 126 to the upper end surface, the lower dustproof sheet 11 is formed in the second positioning groove 126, and the lower support portion 113 of the lower dustproof sheet 11 is provided with a second connecting portion 136 integrally formed with the second connecting hole 127.

[0039] A first positioning groove 124 is formed on the lower end surface of the upper retaining frame 12, and first connecting holes 125 are arranged on both sides thereof. These first connecting holes 125 are radially opened from the direction of the first positioning groove 124 to the upper end surface. The upper dustproof sheet 10 is formed in the first positioning groove 124, and a first connecting portion 116 integrally formed with the first connecting hole 125 is arranged on its upper support portion 109, ensuring a tight connection and high stability between the upper dustproof sheet 10 and the upper retaining frame 12. Similarly, a second positioning groove 126 is formed on the lower end surface of the lower retaining frame 13, and a second connecting hole 127 is arranged on its outer side. These first connecting holes 125 are radially opened from the direction of the first positioning groove 124 to the upper end surface. The second connecting holes 127 are also opened radially from the direction of the second positioning groove 126 to the upper end surface; the lower dustproof sheet 11 is formed in the second positioning groove 126, and its lower support portion 113 is provided with a second connecting portion 136 integrally formed with the second connecting hole 127, ensuring a tight connection and high stability between the lower dustproof sheet 11 and the lower retaining frame 13, which not only simplifies the assembly process and reduces the number of parts, but also enhances the overall stability and reliability of the system through precise positioning and connection structure, and the one-piece design further improves the connection strength between the components, reducing the manufacturing cost and assembly difficulty.

[0040] Specifically, Figure 7 and Fig.13 As shown, a dustproof plate 204 is provided on the end cover 2, and the dustproof plate 204 is installed at the outer end of the reverser 200. A guide rail hole 205 adapted to the cross-sectional shape of the guide rail 3 is provided on the dustproof plate 204, and a lip is provided along the edge of the guide rail hole 205; the lip includes an inner lip 206 close to the inner side of the dustproof plate 204 and an outer lip 207 close to the outer side of the dustproof plate 204, the inner lip 206 is inclined toward the side of the slider body 1, and the outer lip 207 is inclined toward the outside, and the outer side surface of the dustproof plate 204 is provided with a concave first stress release groove 208 along the root of the lip, and the inner side surface is provided with a concave second stress release groove 209 along the cross-sectional direction of the guide rail 3.

[0041] A dustproof plate 204 is provided on the end cover 2, and the dustproof plate 204 is installed at the outer end of the reverser 200, so as to further enhance the overall dustproof effect of the slider. A guide rail hole 205 adapted to the cross-sectional shape of the guide rail 3 is provided on the dustproof plate 204 to ensure that the slider can fit closely to the guide rail 3 during operation and prevent dust and impurities from entering the interior of the slider. A lip is provided along the edge of the guide rail hole 205, and the lip includes an inner lip 206 close to the inner side of the dustproof plate 204 and an outer lip 207 close to the outer side of the dustproof plate 204. The inner lip 206 is inclined laterally toward the slider body 1, and the outer lip 207 is inclined outward, so that the slider can effectively block external dust and oil when moving, and reduce friction at the same time. In addition, an outer side surface of the dustproof plate 204 is provided with a concave first stress release groove 208 along the root of the lip, and an inner side surface is provided with a concave second stress release groove 209 along the cross-sectional direction of the guide rail 3. The design of these stress release grooves helps to disperse and relieve the stress generated by the lip when contacting the guide rail 3, prevent material fatigue and damage caused by long-term use, and thus extend the service life of the dustproof plate 204.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A closed-loop slider, comprising: A slider body (1) and an end cover (2) connected to both end surfaces of the slider body (1), wherein a group of outer raceway holes (100) are respectively provided on the left and right sides of the inside of the slider body (1), and each group of outer raceway holes (100) extends along the length direction of the slider body (1); the inner wall of the slider body (1) is provided with a sliding groove (101) for connecting to an external guide rail, and a group of inner raceway holes (102) are respectively provided on the left and right sides of the sliding groove (101); a deflector (200) matching the inner raceway holes (102) and the outer raceway holes (100) is provided on the end cover (2), and the inner raceway holes (102), the outer raceway holes (100) and the deflectors (200) at both ends of the slider body (1) together form a closed ball channel (117); The slider body (1) is provided with an upper dustproof sheet (10) and a pair of lower dustproof sheets (11), the upper dustproof sheet (10) is located at the bottom of the sliding groove (101), and the two ends are connected to the end covers (2) at the two ends of the slider body (1), the upper dustproof sheet (10) is provided with an upper protruding lip (103) protruding inward from the outside of the sliding groove (101), and the top of the upper protruding lip (103) is provided with a top contact surface (104), and the top contact surface (104) is provided on the top of the slider body (101). The contact surface (104) abuts against the upper surface of the guide rail; the pair of lower dustproof sheets (11) are respectively located on both sides of the sliding groove (101), and both ends are connected to the end covers (2) at both ends of the slider body (1); the lower dustproof sheet (11) is provided with a side protruding lip (105) protruding outward from the inner side of the sliding groove (101); the top of the side protruding lip (105) is provided with a side contact surface (106), and the side contact surface (106) abuts against the side surface of the guide rail.

2. A closed-loop slider according to claim 1, characterized in that: An upper retaining frame (12) is integrally formed on the upper dustproof sheet (10), and first fixing portions (107) are provided at both ends of the upper retaining frame (12). A first positioning groove (108) is provided at the bottom of the sliding groove (101) of the slider body (1), and first fixing grooves (201) are correspondingly provided on the end covers (2) at both ends of the slider body (1). The upper retaining frame (12) is arranged on the first positioning groove (108), and the first fixing portions (107) at both ends of the upper retaining frame (12) are respectively inserted into the end covers (2) at both ends and clamped with the first fixing grooves (201) at the corresponding ends.

3. A closed-loop slider according to claim 2, characterized in that: An upper support portion (109) is provided at the bottom of the upper dustproof sheet (10) and is molded and connected to the upper retaining frame (12); the upper support portion (109) is connected to the upper protruding lip portion (103) to form a first deformable area (110); when the top contact surface (104) contacts the upper surface of the guide rail, the first deformable area (110) is squeezed and deformed, so that the upper protruding lip portion (103) moves from the outer side of the sliding groove (101) to the inner side.

4. A closed-loop slider according to claim 2, characterized in that: A lower retaining frame (13) is integrally formed on the lower dustproof sheet (11), and both ends of the lower retaining frame (13) are provided with a second fixing portion (111) and a third fixing groove (115). Second positioning grooves (112) are provided on both side walls of the sliding groove (101) of the slider body (1), and second fixing grooves (202) and third fixing portions (203) are correspondingly provided on the end covers (2) at both ends of the slider body (1). The lower retaining frame (13) is arranged on the second positioning groove (112), and the second fixing portions (111) at both ends of the lower retaining frame (13) are respectively inserted into the end covers (2) at both ends and clamped with the second fixing grooves (202) at the corresponding ends, and the third fixing grooves (115) at both ends of the lower retaining frame (13) are respectively connected to the third fixing portions (203) at the corresponding ends of the end covers (2) at both ends.

5. A closed-loop slider according to claim 4, characterized in that: The bottom of the lower dustproof sheet (11) is provided with a lower support portion (113) which is molded and connected to the lower retaining frame (13); the lower support portion (113) is connected to the side protruding lip portion (105) to form a second deformable area (114); when the side contact surface (106) contacts the side surface of the guide rail, the second deformable area (114) is squeezed and deformed, so that the side protruding lip portion (105) moves from the inside of the sliding groove (101) to the outside.

6. A closed-loop slider according to claim 5, characterized in that: The upper support portion (109) has a first support inner side surface (128) and a first support outer side surface (129); the first lip inner side surface (130) and the first lip outer side surface (131) are respectively arranged on both sides of the top contact surface (104) of the upper protruding lip portion (103); wherein the first lip inner side surface (130) is located on the inner side of the top contact surface (104) and is connected to the first support inner side surface (128) to form an angle; the first lip outer side surface (131) is located on the outer side of the top contact surface (104) and is connected to the first support outer side surface (129); the connection between the first lip inner side surface (130) and the first support inner side surface (128) and the connection between the first lip outer side surface (131) and the first support outer side surface (129) together form the first deformable area (110).

7. A closed-loop slider according to claim 5, characterized in that: The lower support portion (113) has a second support inner side surface (132) and a second support outer side surface (133); the second lip inner side surface (134) and the second lip outer side surface (135) are respectively arranged on both sides of the lateral contact surface (106) of the side protruding lip portion (105); wherein the second lip inner side surface (134) is located on the inner side of the lateral contact surface (106) and is connected to the second support inner side surface (132); the second lip outer side surface (135) is located on the outer side of the lateral contact surface (106) and is connected to the second support outer side surface (133) to form an angle; the connection between the second lip inner side surface (134) and the second support inner side surface (132) and the connection between the second lip outer side surface (135) and the second support outer side surface (133) together form the second deformable area (114).

8. A closed-loop slider according to claim 5, characterized in that: A group of inner raceway holes (102) are respectively provided on the left and right sides of the sliding groove (101), and each group of inner raceway holes (102) includes two upper inner cylindrical holes (118) and a lower inner cylindrical hole (119) arranged in parallel. The slider body (1) is provided with a first hemispherical groove (120) and a second hemispherical groove (121) on the left and right sides of the sliding groove (101). The upper retaining frame (12) is provided with a first ball retaining groove (122) on both sides, and the first hemispherical groove (120) and the first ball retaining groove (122) cooperate to form the upper inner cylindrical hole (118). The lower retaining frame (13) is provided with a second ball retaining groove (123) on both sides, and the second hemispherical groove (121) and the second ball retaining groove (123) cooperate to form the lower inner cylindrical hole.

9. A closed-loop slider according to claim 5, characterized in that: A first positioning groove (124) is formed on the lower end surface of the upper retaining frame (12), and first connecting holes (125) are provided on both sides, the first connecting holes (125) are radially opened from the direction of the first positioning groove (124) toward the upper end surface, the upper dustproof sheet (10) is formed in the first positioning groove (124), and a first connecting portion (136) integrally formed with the first connecting hole (125) is provided on the upper supporting portion (109) of the upper dustproof sheet (10); A second positioning groove (126) is formed on the lower end surface of the lower retaining frame (13), and a second connecting hole (127) is provided on the outer side of the lower retaining frame (13), the second connecting hole (127) is radially opened from the direction of the second positioning groove (126) toward the upper end surface, the lower dustproof sheet (11) is formed in the second positioning groove (126), and a second connecting portion (137) integrally formed with the second connecting hole (127) is provided on the lower supporting portion (113) of the lower dustproof sheet (11).

10. A closed-loop slider according to claim 1, characterized in that: The end cover (2) is provided with a dustproof plate (204), the dustproof plate (204) is installed at the outer end of the reverser (200), the dustproof plate (204) is provided with a guide rail hole (205) adapted to the cross-sectional shape of the guide rail, and a lip is provided along the edge of the guide rail hole (205); the lip comprises an inner lip (206) close to the inner side of the dustproof plate (204) and an outer lip (207) close to the outer side of the dustproof plate (204), the inner lip (206) is inclined toward the side of the slider body (1), and the outer lip (207) is inclined toward the outer side, and the outer side surface of the dustproof plate (204) is provided with a concave first stress release groove (208) along the root of the lip, and the inner side surface is provided with a concave second stress release groove (209) along the cross-sectional direction of the guide rail.

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