A closed loop slider

Abstract

The application relates to a closed-loop slider, which comprises a slider body, end covers connected to the two end faces of the slider body, a group of outer raceway holes arranged on the left and right sides of the inner part of the slider body respectively, each group of outer raceway holes extending along the length direction of the slider body, a sliding groove for connecting with an external guide rail arranged on the inner wall of the slider body, a group of inner raceway holes arranged on the left and right sides of the sliding groove respectively, a reverser matched with the inner raceway holes and the outer raceway holes arranged on the end cover, and the inner raceway holes, the outer raceway holes and the reverser on the two ends of the slider body jointly forming a closed ball channel; wherein the slider body is provided with an upper dustproof sheet and a pair of lower dustproof sheets, two dustproof devices are arranged on the inner wall of the slider body at the position corresponding to the ball groove on the upper side, the top contact surface of the protruding lip part of the upper dustproof sheet abuts against the upper end surface of the guide rail, the side contact surface of the protruding lip part of the lower dustproof sheet abuts against the two side surfaces of the guide rail, and thus all-around protection is formed.

Description

Technical Field

[0001] This invention relates to the field of slider technology, and more particularly to a closed-loop slider. Background Technology

[0002] Linear guides are key components in fields such as automation equipment, precision machinery, and robotics. They reduce friction by rolling balls or rollers between the guide rail and the slider, thus achieving efficient and smooth linear motion.

[0003] However, traditional linear guides suffer from significant dustproofing deficiencies and complex ball bearing circulation mechanisms. Specifically, traditional guides typically only have one dustproof structure (such as an upper or lower dustproof plate). For example, an existing patent (authorization announcement number CN107269692B) describes a linear guide with an upper dustproof element, characterized by comprising: a rail extending in a long strip-like structure in one direction, defined as the axial direction; the rail having multiple rolling grooves and a fixed protrusion on both sides of the axial direction; a slider module fitted onto the rail and capable of reciprocating relative to the rail; the slider module having an upper top surface and engaging grooves extending from both sides of the upper top surface in the axial direction; and a slider body and end caps respectively disposed on both sides of the slider body in the axial direction. The end face includes an upper dustproof element with a body that mates with the upper top surface. Engaging portions extend from the body in the axial direction to both sides, with the axial length of the engaging portions exceeding that of the slider body. The fixing protrusion is U-shaped, and the engaging groove and engaging portions are C-shaped. The engaging portion is embedded in the engaging groove and has a contact end that contacts the fixing protrusion. The body has two dustproof lips spaced apart on the upper surface of the rail, with the ends of the dustproof lips contacting the upper surface. The fixing protrusion of the rail is accommodated in the engaging groove of the slider module. The upper dustproof element can be fixed to the slider module by the engagement between the engaging portions and the engaging groove. The dustproof lips and contact ends provide two paths to prevent foreign objects from entering the rolling element, ensuring smooth operation of the slider module and extending its service life.

[0004] However, the problem of multi-directional dust prevention has not been solved. This single dust prevention design cannot effectively prevent dust and oil from entering the slider from multiple directions, which leads to increased wear of the balls or rollers and affects the normal operation of the slide rail. In addition, in order to achieve the cyclic action of the balls, multiple cages need to be installed, which not only increases the assembly difficulty, but also introduces more potential wear points. Summary of the Invention

[0005] The present invention aims to solve the problems existing in the prior art by providing 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 this invention to solve its technical problem is as follows: This closed-loop slider includes: a slider body and end caps connected to both ends of the slider body. The slider body has a set of outer raceway holes on its left and right sides, each set extending along the length of the slider body. The inner wall of the slider body has a sliding groove for connecting with an external guide rail, and a set of inner raceway holes is provided on both sides of the sliding groove. The end caps are provided with a reversing device that matches the inner raceway holes and outer raceway holes. The inner raceway holes, outer raceway holes, and the reversing devices at both ends of the slider body together form a closed ball bearing channel.

[0007] The slider body is provided with an upper dustproof plate and a pair of lower dustproof plates. The upper dustproof plate is located at the bottom of the sliding groove and is connected to the end caps at both ends of the slider body. The upper dustproof plate has an upper protruding lip that protrudes inward from the outside of the sliding groove. The top of the upper protruding lip has a top contact surface that abuts against the upper surface of the guide rail. The pair of lower dustproof plates are located on both sides of the sliding groove and are connected to the end caps at both ends of the slider body. The lower dustproof plates have a side protruding lip that protrudes outward from the inside of the sliding groove. The top of the side protruding lip has a side contact surface that abuts against the side surface of the guide rail.

[0008] Preferably, an upper retainer is integrally formed on the upper dustproof sheet, and a first fixing part is provided at both ends of the upper retainer. A first positioning groove is provided at the bottom of the sliding groove of the slider body, and a first fixing groove is provided on the end caps at both ends of the slider body. The upper retainer is disposed on the first positioning groove, and the first fixing parts at both ends of the upper retainer are respectively inserted into the end caps at both ends and engaged with the first fixing grooves at the corresponding ends.

[0009] Preferably, the bottom of the upper dustproof sheet is provided with an upper support portion that is formed and connected to the upper retainer. 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, causing the upper protruding lip to move from the outside of the sliding groove to the inside.

[0010] Preferably, a lower retainer is integrally formed on the lower dustproof sheet. A second fixing part and a third fixing groove are provided at both ends of the lower retainer. A second positioning groove is provided on both sides of the sliding groove of the slider body. A second fixing groove and a third fixing part are correspondingly provided on the end caps at both ends of the slider body. The lower retainer is disposed on the second positioning groove. The second fixing parts at both ends of the lower retainer are respectively inserted into the end caps at both ends and engaged with the second fixing grooves at the corresponding ends. The third fixing grooves at both ends of the lower retainer are respectively connected to the third fixing parts at the corresponding ends of the end caps at both ends.

[0011] Preferably, the bottom of the lower dustproof sheet is provided with a lower support portion that is molded and connected to the lower retainer. 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, causing the side protruding lip to move from the inside of the sliding groove to the outside.

[0012] Preferably, the upper support portion has a first inner support surface and a first outer support surface, and the top contact surface of the upper protruding lip is provided with a first inner lip surface and a first outer lip surface on both sides, wherein the first inner lip surface is located inside the top contact surface and is connected to the first inner support surface to form an angle, and the first outer lip surface is located outside the top contact surface and is connected to the first outer support surface. The connection between the first inner lip surface and the first inner support surface, and the connection between the first outer lip surface and the first outer support surface, together form the first deformable area.

[0013] Preferably, the lower support portion has a second inner support surface and a second outer support surface. The lateral contact surface of the lateral protruding lip is provided with a second inner lip surface and a second outer lip surface on both sides. The second inner lip surface is located inside the lateral contact surface and is connected to the second inner support surface. The second outer lip surface is located outside the lateral contact surface and is connected to the second outer support surface to form an angle. The connection between the second inner lip surface and the second inner support surface, and the connection between the second outer lip surface and the second outer support surface, together form the second deformable area.

[0014] Preferably, a set of inner raceway holes is provided on the left and right sides of the sliding groove, and each set of inner raceway holes includes two parallel upper inner cylindrical holes and a lower inner cylindrical hole. 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 retainer is provided with a first ball retaining groove on both sides. The first hemispherical groove and the first ball retaining groove cooperate to form the upper inner cylindrical hole. The lower retainer is provided with a second ball retaining groove on both sides. The second hemispherical groove and the second ball retaining groove (123) cooperate to form the lower inner cylindrical hole.

[0015] Preferably, a first positioning groove is formed on the lower end face 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 face. The upper dustproof sheet is formed in the first positioning groove, and a first connecting part integrally formed with the first connecting hole is provided on the upper support part of the upper dustproof sheet.

[0016] A second positioning groove is formed on the lower end face of the lower retainer, and a second connecting hole is provided on the outer side of the lower retainer. The second connecting hole is radially opened from the direction of the second positioning groove to the upper end face. The lower dustproof sheet is formed in the second positioning groove, and a second connecting part integrally formed with the second connecting hole is provided on the lower support part of the lower dustproof sheet.

[0017] Preferably, the end cap is provided with a dustproof plate, which is installed on the outer end of the reverser. The dustproof plate is provided with a guide rail hole that matches 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 near the inner side of the dustproof plate and an outer lip near the outer side of the dustproof plate. The inner lip is inclined to the side of the slider body, and the outer lip is inclined to the outside. The outer side of the dustproof plate is provided with a recessed first stress relief groove along the root of the lip, and the inner side is provided with a recessed second stress relief groove along the cross-sectional direction of the guide rail.

[0018] The present invention has the following beneficial effects:

[0019] 1. Two dustproof devices are installed on the upper side of the inner wall of the slider, corresponding to the steel ball groove. One 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 dustproof plate abuts against the upper end surface of the guide rail, while the side contact surface of the protruding lip of the lower dustproof plate abuts against the two sides of the guide rail, thus forming all-round protection.

[0020] 2. The upper dustproof plate is provided with a first deformable area, which can reduce the contact force between the top contact surface and the guide rail, thereby reducing wear caused by friction; the lower dustproof plate is provided with a second deformable area, which reduces the contact force on the side contact surface in a similar way, further reducing wear.

[0021] 3. To simplify the assembly process and improve stability, the upper dust cover and upper cage, as well as the lower dust cover and lower cage, are all manufactured using a one-piece two-color injection molding process. This means that the two parts that originally needed to be manufactured and assembled separately are now combined into one, reducing assembly steps and ensuring higher stability and reliability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a closed-loop slider according to the present invention;

[0023] Figure 2This is a cross-sectional view of a closed-loop slider according to the present invention;

[0024] Figure 3 For this Figure 2 Enlarged view of the structure at point A in the middle;

[0025] Figure 4 For this Figure 2 Enlarged view of the structure at point B;

[0026] Figure 5 This is a schematic diagram of the internal structure of a closed-loop slider according to the present invention;

[0027] Figure 6 This is a schematic diagram of the inner raceway hole.

[0028] Figure 7 This is an exploded view of the structure of a closed-loop slider according to the present invention;

[0029] Figure 8 This is a bottom view of a closed-loop slider according to the present invention;

[0030] Figure 9 Front view of the upper dust cover and upper retainer;

[0031] Figure 10 Exploded view of the upper dust cover and upper cage;

[0032] Figure 11 This is a structural diagram of the lower dust cover and the lower cage;

[0033] Figure 12 Exploded view of the lower dust cover and lower cage;

[0034] Figure 13 This is a schematic diagram of the back structure of the dustproof panel.

[0035] Explanation of reference numerals in the attached figures:

[0036] 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 118. Ball channel; 119. Upper inner cylindrical hole; 120. Lower inner cylindrical hole; 121. First hemispherical groove; 122. Second hemispherical groove; 123. First ball retaining groove; 124. Second ball retaining groove; 125. First positioning groove; 126. Second positioning groove; 127. Second connecting hole; 128. Inner side of first support; 129. Outer side of first support; 130. Inner side of first lip; 131. Outer side of first lip; 132. Inner side of second support; 133. Outer side of second support; 134. Inner side of second lip; 135. Outer side of second lip; 136. Second connecting part;

[0037] 2. End cap; 200. Reversing device; 201. First fixing groove; 202. Second fixing groove; 203. Third fixing part; 204. Dustproof plate; 205. Guide rail hole; 206. Inner lip; 207. Outer lip; 208. First stress relief groove; 209. Second stress relief groove;

[0038] 3. Guide rail. Detailed Implementation

[0039] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0040] like Figures 1 to 13As shown, a closed-loop slider includes: a slider body 1 and end caps 2 connected to both ends of the slider body 1. The slider body 1 has a set of outer raceway holes 100 on its left and right sides, each set extending along the length of the slider body 1. The inner wall of the slider body 1 has a sliding groove 101 for connecting with an external guide rail 3, and a set of inner raceway holes 102 on its left and right sides. The end caps 2 are provided with reversers 200 that match the inner raceway holes 102 and the outer raceway holes 100. The inner raceway holes 102, the outer raceway holes 100, and the reversers 200 at both ends of the slider body 1 together form a closed ball bearing channel 117. An upper dustproof sheet 1 is provided on the slider body 1. The upper dustproof plate 10 is located at the bottom of the sliding groove 101 and is connected to the end caps 2 at both ends of the slider body 1. The upper dustproof plate 10 has an upper protruding lip 103 that protrudes inward from the outside of the sliding groove 101. The top of the upper protruding lip 103 is provided with a top contact surface 104, which abuts against the upper surface of the guide rail 3. The lower dustproof plates 11 are located on both sides of the sliding groove 101 and are connected to the end caps 2 at both ends of the slider body 1. The lower dustproof plates 11 have a side protruding lip 105 that protrudes outward from the inside of the sliding groove 101. The top of the side protruding lip 105 is provided with a side contact surface 106, which abuts against the side surface of the guide rail 3.

[0041] The slider includes a slider body 1 and end caps 2 connected to its two end faces. The slider body 1 has a set of outer raceway holes 100 extending along its length on its left and right sides. The inner wall has a sliding groove 101 for connecting to an external guide rail 3. The sliding groove 101 has a set of inner raceway holes 102 on its left and right sides. The end caps 2 are equipped with reversers 200 that match these inner raceway holes 102 and outer raceway holes 100, so that the inner raceway holes 102, outer raceway holes 100, and the reversers 200 at both ends of the slider body 1 together form a closed ball channel 117, ensuring smooth circulation of the balls inside the slider. In this embodiment, the slider body 1 is equipped with an upper dustproof sheet 10 and a pair of lower dustproof sheets 11 to achieve all-around dust protection. The upper dustproof sheet 10 is located at... The bottom of the sliding groove 101 is connected to the end caps 2 at both ends of the slider body 1. It has an upper protruding lip 103 that protrudes inward from the outer side of the sliding groove 101, and the top contact surface 104 abuts against the upper surface of the guide rail 3. A pair of lower dustproof plates 11 are located on both sides of the sliding groove 101, and both ends are connected to the end caps 2 at both ends of the slider body 1. They have a side protruding lip 105 that protrudes outward from the inner side of the sliding groove 101, and the side contact surface 106 abuts against the side surface of the guide rail 3. The upper dustproof plate 10 and the lower dustproof plate 11 can effectively prevent dust and oil from entering the slider. In addition, since the protruding lip on each dustproof plate has a deformable area, it is squeezed and deformed when in contact with the guide rail 3, which reduces the friction and wear between the contact surfaces and extends the service life of the equipment.

[0042] Specifically, such as Figures 2 to 10 As shown, an upper retainer 12 is integrally formed on the upper dustproof sheet 10. The upper retainer 12 has a first fixing part 107 at both ends. The bottom of the sliding groove 101 of the slider body 1 has a first positioning groove 108. The end caps 2 at both ends of the slider body 1 are respectively provided with a first fixing groove 201. The upper retainer 12 is set on the first positioning groove 108. The first fixing parts 107 at both ends of the upper retainer 12 are respectively inserted into the end caps 2 at both ends and engaged with the first fixing grooves 201 at the corresponding ends.

[0043] The upper dust cover 10 and the upper retainer 12 adopt an integrated two-color injection molding design. This design not only simplifies the assembly process but also improves the stability and reliability of the overall structure. The upper retainer 12 has a first fixing part 107 at both ends, and the bottom of the sliding groove 101 of the slider body 1 is provided with a first positioning groove 108. At the same time, the end caps 2 at both ends of the slider body 1 are correspondingly provided with first fixing grooves 201. 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 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 caps 2 at both ends of the slider body 1 and snapped in place. This design allows the upper dust cover 10 and the upper retainer 12 to be tightly connected, and the fixing grooves of the end caps 2 further enhance the stability of the structure, avoiding loosening or displacement caused by vibration or other external forces. In addition, the integrated molding design reduces the number of parts, reduces assembly difficulty and cost, and also reduces potential wear points, improving the smooth operation and service life of the entire system.

[0044] Specifically, such as Figure 2 and Figure 3 As shown, the bottom of the upper dustproof sheet 10 is provided with an upper support portion 109 that is formed and connected to the upper retainer 12. 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, causing the upper protruding lip 103 to move from the outside to the inside of the sliding groove 101.

[0045] The bottom of the upper dustproof sheet 10 is provided with an upper support portion 109 that is formed and connected to the upper retainer 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 connecting part between the upper dustproof sheet 10 and the upper retainer 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 is compressed and deformed, allowing the upper protruding lip 103 to 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, reducing the risk of wear, but also adaptively adjusts the contact pressure under different working conditions, ensuring a continuous and stable dustproof effect. In addition, this deformable area design not only improves dustproof performance but also extends the service life of the equipment. The slider can perform excellently in high-precision and long-life applications, providing more reliable protection and higher performance.

[0046] Specifically, such as Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 11 and Figure 12 As shown, a lower retainer 13 is integrally formed on the lower dustproof sheet 11. The lower retainer 13 has a second fixing part 111 and a third fixing groove 115 at both ends. The sliding groove 101 of the slider body 1 has a second positioning groove 112 on both sides of the groove wall. The end caps 2 at both ends of the slider body 1 are respectively provided with a second fixing groove 202 and a third fixing part 203. The lower retainer 13 is set on the second positioning groove 112. The second fixing parts 111 at both ends of the lower retainer 13 are respectively inserted into the end caps 2 at both ends and engaged with the corresponding second fixing grooves 202. The third fixing grooves 115 at both ends of the lower retainer 13 are respectively connected to the third fixing parts 203 at the corresponding ends of the end caps 2.

[0047] The lower dustproof sheet 11 and the lower retainer 13 adopt an integrated two-color injection molding design. This design not only simplifies the assembly process, but also improves the stability and reliability of the structure. The lower retainer 13 is provided with a second fixing part 111 and a third fixing groove 115 at both ends. The sliding groove 101 of the slider body 1 is provided with a second positioning groove 112 on both sides of the groove wall. At the same time, the end caps 2 at both ends of the slider body 1 are provided with a second fixing groove 202 and a third fixing part 203 respectively. During installation, the lower retainer 13 is first placed in the second positioning grooves 112 on both sides of the sliding groove 101 of the slider body 1 to ensure accurate positioning. Then, the second fixing parts 111 at both ends of the lower retainer 13 are inserted into the second fixing grooves 202 on the end caps 2 at both ends of the slider body 1 and locked in place. At the same time, the third fixing grooves 115 at both ends of the lower retainer 13 are connected to the third fixing parts 203 at the corresponding ends of the end caps 2, further enhancing the stability of the structure. This design allows the lower dustproof sheet 11 and the lower retainer 13 to be tightly connected, and the fixing grooves and fixing parts of the end caps 2 further prevent loosening or displacement. The one-piece molding design reduces the number of parts, reduces assembly difficulty and cost, and also reduces potential wear points, improving the smooth operation and service life of the entire system.

[0048] Furthermore, such as Figure 2 , Figure 4 and Figure 11 As shown, the bottom of the lower dustproof sheet 11 is provided with a lower support portion 113 that is formed and connected to the lower retainer 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, causing the side protruding lip 105 to move from the inside to the outside of the sliding groove 101.

[0049] The design of the lower dustproof plate 11 forms a second deformable area 114 by setting a lower support part 113 at its bottom that is molded and connected to the lower retainer 13. The lower support part 113 is connected to the side protruding lip 105, forming this flexible connection part. 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 the contact pressure is adaptively adjusted under different working conditions, thereby providing a continuous and stable dustproof effect.

[0050] Furthermore, such as Figure 2 , Figure 9 and Figure 10 As shown, the upper support portion 109 has a first inner support surface 128 and a first outer support surface 129. The top contact surface 104 of the upper protruding lip 103 is provided with a first inner lip surface 130 and a first outer lip surface 131 on both sides. The first inner lip surface 130 is located inside the top contact surface 104 and is connected to the first inner support surface 128 to form an angle. The first outer lip surface 131 is located outside the top contact surface 104 and is connected to the first outer support surface 129. The connection between the first inner lip surface 130 and the first inner support surface 128, and the connection between the first outer lip surface 131 and the first outer support surface 129, together form a first deformable region 110.

[0051] The upper support portion 109 has a first inner support surface 128 and a first outer support surface 129. The top contact surface 104 of the upper protruding lip 103 has a first inner lip surface 130 and a first outer lip surface 131 on both sides. The first inner lip surface 130 is located inside the top contact surface 104 and forms an angle with the first inner support surface 128; the first outer lip surface 131 is located outside the top contact surface 104 and connects with the first outer support surface 129. This design ensures that the connection between the first inner lip surface 130 and the first inner support surface 128, and... The connection between the outer surface 131 of the first lip and the outer surface 129 of the first support together forms the 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 to ensure a continuous and stable dustproof effect, and improve the overall system's operational stability and reliability.

[0052] Furthermore, such as Figure 2 , Figure 4 and Figure 11 As shown, the lower support portion 113 has a second inner support surface 132 and a second outer support surface 133. The lateral contact surface 106 of the lateral protruding lip 105 is provided with a second inner lip surface 134 and a second outer lip surface 135 on both sides. The second inner lip surface 134 is located inside the lateral contact surface 106 and is connected to the second inner support surface 132. The second outer lip surface 135 is located outside the lateral contact surface 106 and is connected to the second outer support surface 133 to form an angle. The connection between the second inner lip surface 134 and the second inner support surface 132, and the connection between the second outer lip surface 135 and the second outer support surface 133, together form a second deformable region 114.

[0053] The lower support portion 113 has a second inner support surface 132 and a second outer support surface 133. The lateral contact surface 106 of the lateral protruding lip 105 has a second inner lip surface 134 and a second outer lip surface 135 on both sides. The second inner lip surface 134 is located inside the lateral contact surface 106 and connects to the second inner support surface 132; the second outer lip surface 135 is located outside the lateral contact surface 106 and connects to the second outer support surface 133 at an angle. This design ensures that the second inner lip surface 134 and the second outer support surface 133 are aligned at an angle. The connection point of surface 132 and the connection point of the outer surface of the second lip 135 and the outer surface of the second support 133 together form the 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. This not only reduces the friction between the side contact surface 106 and the guide rail 3 and reduces the risk of wear, but also enables adaptive adjustment of the contact pressure under different working conditions to ensure a continuous and stable dustproof effect.

[0054] Furthermore, such as Figure 2 , Figure 5 and Figure 6 As shown, a set of inner raceway holes 102 are provided on the left and right sides of the sliding groove 101. Each set of inner raceway holes 102 includes two parallel upper inner cylindrical holes 118 and lower inner cylindrical holes 119. 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 retainer 12 is provided with a first ball retaining groove 122 on both sides. The first hemispherical groove 120 and the first ball retaining groove 122 cooperate to form the upper inner cylindrical hole 118. The lower retainer 13 is provided with a second ball retaining groove 123 on both sides. The second hemispherical groove 121 and the second ball retaining groove 123 (123) cooperate to form the lower inner cylindrical hole.

[0055] The sliding groove 101 has a set of inner raceway holes 102 on its left and right sides respectively. Each set of inner raceway holes 102 includes two parallel upper inner cylindrical holes 118 and lower inner cylindrical holes 119. The slider body 1 has a first hemispherical groove 120 and a second hemispherical groove 121 on its left and right sides of the sliding groove 101, which are used to cooperate with the cage to form a complete raceway hole structure. The upper cage 12 has first ball retaining grooves 122 on both sides. These first ball retaining grooves 122 and the first hemispherical grooves 120 on the slider body 1 are connected. Together, they form the upper inner cylindrical hole 118; similarly, the lower retainer 13 has second ball retaining grooves 123 on both sides. These second ball retaining grooves 123 cooperate with the second hemispherical groove 121 on the slider body 1 to form the lower inner cylindrical hole 119, ensuring that the balls can circulate smoothly inside the slider. Through the precise fit 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.

[0056] Furthermore, such as Figures 9 to 12 As shown, a first positioning groove 124 is formed on the lower end surface of the upper retainer 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 to the upper end surface. The upper dustproof sheet 10 is formed in the first positioning groove 124, and a first connecting part 116 integrally formed with the first connecting hole 125 is provided on the upper support part 109 of the upper dustproof sheet 10. A second positioning groove 126 is formed on the lower end surface of the lower retainer 13, and a second connecting hole 127 is provided on the outer side of the lower retainer 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 a second connecting part 136 integrally formed with the second connecting hole 127 is provided on the lower support part 113 of the lower dustproof sheet 11.

[0057] A first positioning groove 124 is formed on the lower end face of the upper retainer 12, and first connecting holes 125 are provided on both sides of it. These first connecting holes 125 are radially opened from the direction of the first positioning groove 124 to the upper end face. The upper dustproof sheet 10 is formed in the first positioning groove 124, and a first connecting part 116 integrally formed with the first connecting hole 125 is provided on its upper support part 109, ensuring a tight connection and high stability between the upper dustproof sheet 10 and the upper retainer 12. Similarly, a second positioning groove 126 is formed on the lower end face of the lower retainer 13, and a second connecting hole 127 is provided on its outer side. The two connecting holes 127 are also radially opened from the direction of the second positioning groove 126 to the upper end face; the lower dustproof sheet 11 is formed in the second positioning groove 126, and the lower support part 113 is provided with a second connecting part 136 integrally formed with the second connecting hole 127, which ensures a tight connection and high stability between the lower dustproof sheet 11 and the lower retainer 13. This 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. Furthermore, the integral design further improves the connection strength between the components and reduces manufacturing costs and assembly difficulty.

[0058] Specifically, such as Figure 7 and Figure 13 As shown, a dustproof plate 204 is provided on the end cap 2. The dustproof plate 204 is installed on the outer end of the reverser 200. The dustproof plate 204 is provided with a guide rail hole 205 that matches the cross-sectional shape of the guide rail 3. A lip is provided along the edge of the guide rail hole 205. The lip includes an inner lip 206 near the inner side of the dustproof plate 204 and an outer lip 207 near the outer side of the dustproof plate 204. The inner lip 206 is inclined to the side of the slider body 1, and the outer lip 207 is inclined to the outside. The outer side of the dustproof plate 204 is provided with a recessed first stress relief groove 208 along the root of the lip, and the inner side is provided with a recessed second stress relief groove 209 along the cross-sectional direction of the guide rail 3.

[0059] A dustproof plate 204 is provided on the end cover 2. The dustproof plate 204 is installed on the outer end of the reverser 200 to further enhance the overall dustproof effect of the slider. The dustproof plate 204 is provided with a guide rail hole 205 that matches the cross-sectional shape of the guide rail 3 to ensure that the slider can fit tightly against the guide rail 3 during operation and prevent dust and impurities from entering the slider. A lip is provided along the edge of the guide rail hole 205. The lip includes an inner lip 206 near the inner side of the dustproof plate 204 and an outer lip 207 near the outer side of the dustproof plate 204. The inner lip 206 is inclined to the side of the slider body 1, and the outer lip 207 is inclined to the outside, which effectively blocks external dust and oil when the slider moves, while reducing friction. In addition, the outer side of the dustproof plate 204 is provided with a recessed first stress relief groove 208 along the root of the lip, and the inner side is provided with a recessed second stress relief groove 209 along the cross-sectional direction of the guide rail 3. The design of these stress relief grooves helps to disperse and alleviate the stress generated when the lip contacts 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.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A closed-loop slider, comprising: The slider body (1) and end caps (2) connected to the two ends of the slider body (1) are characterized in that the slider body (1) has a set of outer raceway holes (100) on the left and right sides of its interior, and each set of outer raceway holes (100) extends along the length of the slider body (1); the inner wall of the slider body (1) is provided with a sliding groove (101) for connecting with an external guide rail, and a set of inner raceway holes (102) is provided on the left and right sides of the sliding groove (101); the end caps (2) are provided with a reverser (200) that matches the inner raceway holes (102) and the outer raceway holes (100), and the inner raceway holes (102), the outer raceway holes (100) and the reversers (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 plate (10) and a pair of lower dustproof plates (11). The upper dustproof plate (10) is located at the bottom of the sliding groove (101) and its two ends are connected to the end caps (2) at both ends of the slider body (1). The upper dustproof plate (10) is provided with an upper protruding lip (103) that protrudes inward from the outside of the sliding groove (101). The top of the upper protruding lip (103) is provided with a top contact surface (104). The contact surface (104) abuts against the upper surface of the guide rail; the pair of lower dustproof plates (11) are located on both sides of the sliding groove (101), and both ends are connected to the end caps (2) at both ends of the slider body (1). The lower dustproof plate (11) is provided with a side protruding lip (105) that protrudes 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: The upper dustproof sheet (10) is integrally formed with an upper retainer (12). The upper retainer (12) has a first fixing part (107) at both ends. The bottom of the sliding groove (101) of the slider body (1) is provided with a first positioning groove (108). The end caps (2) at both ends of the slider body (1) are respectively provided with a first fixing groove (201). The upper retainer (12) is set on the first positioning groove (108). The first fixing parts (107) at both ends of the upper retainer (12) are respectively inserted into the end caps (2) and engaged with the first fixing grooves (201) at the corresponding ends.

3. A closed-loop slider according to claim 2, characterized in that: The bottom of the upper dustproof sheet (10) is provided with an upper support part (109) that is formed and connected to the upper retainer (12). The upper support part (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, 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).

4. A closed-loop slider according to claim 3, characterized in that: The lower dustproof sheet (11) is integrally formed with a lower retainer (13). The lower retainer (13) is provided with a second fixing part (111) and a third fixing groove (115) at both ends. The sliding groove (101) of the slider body (1) is provided with a second positioning groove (112) on both sides of the groove wall. The end caps (2) at both ends of the slider body (1) are provided with a second fixing groove (202) and a third fixing part (203). The lower retainer (13) is set on the second positioning groove (112). The second fixing parts (111) at both ends of the lower retainer (13) are respectively inserted into the end caps (2) at both ends and engaged with the second fixing grooves (202) at the corresponding ends. The third fixing grooves (115) at both ends of the lower retainer (13) are respectively connected to the third fixing parts (203) at the corresponding ends of the end caps (2).

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 part (113) that is formed and connected to the lower retainer (13). The lower support part (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, the second deformable area (114) is squeezed and deformed, so that the side protruding lip (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 (109) has a first inner support surface (128) and a first outer support surface (129). The top contact surface (104) of the upper protruding lip (103) is provided with a first inner lip surface (130) and a first outer lip surface (131) on both sides. The first inner lip surface (130) is located inside the top contact surface (104) and is connected to the first inner support surface (128) to form an angle. The first outer lip surface (131) is located outside the top contact surface (104) and is connected to the first outer support surface (129). The connection between the first inner lip surface (130) and the first inner support surface (128) and the connection between the first outer lip surface (131) and the first outer support surface (129) together form the first deformable area (110).

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

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

9. A closed-loop slider according to claim 5, characterized in that: The lower end face of the upper retainer (12) is provided with a first positioning groove (124) and a first connecting hole (125) is provided on both sides. The first connecting hole (125) is radially opened from the direction of the first positioning groove (124) to the upper end face. The upper dustproof sheet (10) is formed in the first positioning groove (124) and the upper support part (109) of the upper dustproof sheet (10) is provided with a first connecting part (116) integrally formed with the first connecting hole (125). A second positioning groove (126) is formed on the lower end face of the lower retainer (13), and a second connecting hole (127) is provided on the outer side of the lower retainer (13). The second connecting hole (127) is radially opened from the direction of the second positioning groove (126) to the upper end face. The lower dustproof sheet (11) is formed in the second positioning groove (126), and a second connecting part (136) integrally formed with the second connecting hole (127) is provided on the lower support part (113) of the lower dustproof sheet (11).

10. A closed-loop slider according to claim 1, characterized in that: The end cap (2) is provided with a dustproof plate (204), which is installed on the outer end of the reverser (200). The dustproof plate (204) is provided with a guide rail hole (205) that matches the cross-sectional shape of the guide rail. A lip is provided along the edge of the guide rail hole (205). The lip includes an inner lip (206) near the inner side of the dustproof plate (204) and an outer lip (207) near the outer side of the dustproof plate (204). The inner lip (206) is inclined to the side of the slider body (1), and the outer lip (207) is inclined to the outside. The outer side of the dustproof plate (204) is provided with a recessed first stress relief groove (208) along the root of the lip. The inner side is provided with a recessed second stress relief groove (209) along the cross-sectional direction of the guide rail.

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