Rolling wheel type sliding rail mechanism capable of preventing dislocation

Abstract

The invention discloses a rolling wheel type sliding rail mechanism capable of preventing dislocation. The rolling wheel type sliding rail mechanism comprises an inner rail, an outer rail and rolling wheels arranged on the inner rail. Positioning grooves which are opened towards the outer side are formed in the two outer side positions of the inner rail respectively, the idler wheels are fixed through the positioning grooves, the outer edges where the idler wheels are located protrude out of the outer edge where the inner rail is located and are parallel to each other, and autorotation is achieved; a rotating shaft penetrates through the center of the roller and protrudes towards two sides, so that the rotating shaft and the positioning groove only form axial rotation; the section where the outer rail is located is of a U-shaped structure, the inner rail is located in a center notch of the U-shaped structure where the outer rail is located, the outer edge of the rolling wheel is attached to the inner wall of the center notch where the outer rail is located to roll, and therefore the inner rail and the outer rail are driven to move relatively in the axis direction. The mechanism provides a novel solution of dislocation prevention, high adaptation and long service life for the slide rail industry, promotes the technical upgrade of the slide rail mechanism, further enables the performance optimization of products in upstream and downstream industries, and has remarkable industry value and application significance.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of slide rail, and particularly relates to a roller type slide rail mechanism capable of preventing dislocation. BACKGROUND

[0002] In many fields such as modern industrial production, home life and automation equipment, the slide rail mechanism as a core component for realizing the relative sliding of components directly determines the stability, precision and service life of the equipment. From the sliding positioning of mechanical arms in industrial automation production lines, the pulling of shelves in warehouse equipment, to the opening and closing of drawers in home scenarios, the sliding of cabinet baskets, to the adjustment of precision components in medical equipment, the slide rail mechanism has become a key basic component supporting the convenient operation and function expansion of various products.

[0003] The existing slide rail mechanism mainly includes an inner rail, an outer rail and a steel ball support frame (middle rail) arranged between the inner rail and the outer rail. The commonly used slide rail mechanism usually supports the steel ball with the middle rail, and then extrudes the steel ball by the size cooperation of the outer rail and the inner rail to make the steel ball slide to generate resistance, thereby realizing the required sliding force value.

[0004] Therefore, when the sliding force value is larger, the steel ball is easy to be stuck and not to rotate; or when the smoothness of the steel ball rolling surface is worse, the steel ball will be idling, and these two cases will cause the middle rail to be slightly away from the original position (dislocation). With the increase of the sliding times, the dislocation distance will also increase, resulting in the shortening of the moving stroke. Figure 12 As shown in the adverse case, the longer the time of relative sliding of the inner rail and the outer rail, the greater the distance of dislocation of the middle rail. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a roller type slide rail mechanism capable of preventing dislocation, which solves the above technical problems existing in the prior art.

[0006] The purpose of the present application can be achieved by the following technical solutions: A roller type slide rail mechanism capable of preventing dislocation, comprising an inner rail, an outer rail and a roller arranged on the inner rail; The inner rail and the outer rail are both in a long strip structure; A plurality of groups of positioning grooves open to the outside are formed on both outer sides of the inner rail, the roller is fixed through the positioning grooves, the outer edge of the roller protrudes the outer edge of the inner rail and is parallel to each other, and self-rotation is realized; The center of the roller penetrates and protrudes to both sides through a rotating shaft, so that the rotating shaft and the positioning grooves only form axial rotation; The section where the outer rail is located presents a U-shaped structure, and the inner rail is located in the center slot of the U-shaped structure where the outer rail is located, so that the outer edge of the roller rolls in the inner wall of the center slot where the outer rail is located, thereby driving the relative movement of the inner rail and the outer rail in the axial direction.

[0007] Further, the inner rail is a two-group left-right symmetrical "D" shaped structure, and a plurality of outwardly open positioning grooves are symmetrically arranged on the upper and lower parts of the outer side wall of the "D" shaped structure.

[0008] Further, the inner rail is an integral structure, and the positioning grooves are staggered on the two outer sides of the inner rail.

[0009] Further, the inner rail is a two-group left-right symmetrical structure and a "D" shaped structure, and a plurality of outwardly open positioning grooves are arranged on the upper and lower parts of the outer side wall of the "D" shaped structure, and a positioning hole is arranged concentrically on the lower and upper parts of the outer side wall of the inner rail, so that one end of the roller shaft is rotatably connected in the positioning hole, the other end of the roller shaft is assembled on the positioning groove, and a locking member is fixed on the end surface of the inner rail where the positioning groove is located.

[0010] Further, the inner rail is a two-group left-right symmetrical structure and a "D" shaped structure, and a plurality of outwardly open positioning grooves are arranged on the upper and lower parts of the outer side wall of the "D" shaped structure, and a positioning hole is arranged concentrically on the lower and upper parts of the outer side wall of the inner rail, so that one end of the roller shaft is rotatably connected in the positioning hole, the other end of the roller shaft is assembled on the positioning groove, and a locking member is fixed on the end surface of the inner rail where the positioning groove is located.

[0011] Further, the locking member is a strip-shaped structure, and is locked and fixed along the end surface of the outer edge of the inner rail, and a positioning assembly is arranged on the outer side of the positioning groove where the locking member is located. The positioning assembly and the locking member are an integral structure, and the positioning assembly is arranged in the opening direction of the positioning groove to limit the shaft of the roller.

[0012] Further, the roller is made of an integral metal material.

[0013] Further, the outer periphery of the roller forms a plastic ball, and metal shafts are fixed at both ends of the plastic ball.

[0014] Further, first locking holes and second locking holes are arranged on the inner rail and the outer rail respectively, the inner rail is fixed by locking through the first locking holes, and the outer rail is fixed by locking through the second locking holes.

[0015] Further, the inner wall of the center slot where the outer rail is located forms an arc-shaped channel in the axial direction, so that the outer diameter of the roller rolls in the arc-shaped channel.

[0016] The beneficial effects of the present application are as follows: 1、The device solves this difficult problem through multiple innovative designs: first, the precise fit of the inner rail positioning groove and the roller shaft allows only axial rotation of the shaft, limiting lateral movement, ensuring that the roller always adheres to the inner wall of the outer rail; second, the guiding effect of the outer rail arc channel further constrains the roller rolling track, avoiding deviation; at the same time, the inner rail allows the clearance to buffer the deformation of the positioning groove, avoiding misalignment caused by structural stress. These designs collectively build a "positioning-guiding-buffering-limiting" misalignment prevention system, which suppresses misalignment from the root, so even if used for a long time, misalignment distance will not accumulate, ensuring the accuracy of the sliding rail in the axial direction, meeting the needs of highly precise scenarios such as industrial automation and medical equipment.

[0017] 2、The inner rail of the device can be made in one piece or in two symmetrical " " type structures, and the positioning groove can be opened according to demand (such as symmetrically, staggered, or with positioning holes), which can meet the strength requirements of high-load operation of industrial equipment and also adapt to the installation and operation of lightweight scenarios such as household drawers and pull baskets; in terms of material, the roller can be made of one-piece metal material (suitable for high-load and wear-resistant scenarios) or "metal shaft + plastic ball" composite material (suitable for low-noise and cushioning scenarios), covering different usage conditions in industries, households, and medical fields.

[0018] 3、The device uses rolling friction between the roller and the outer rail instead of sliding friction of traditional sliding blocks, reducing contact surface wear, and the arc channel and the roller are designed to fit, making the stress evenly distributed and avoiding local excessive wear; on the other hand, the clearance allows the positioning groove to deform, avoiding inner rail cracking or roller jamming caused by structural stress, reducing the probability of component damage. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, and obviously, other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is the overall structure schematic diagram of embodiment one of the present application; Figure 2 is the exploded structure schematic diagram of embodiment one of the present application; Figure 3 is the partial structure schematic diagram of A of embodiment one of the present application; Figure 4 is the cross-sectional structure schematic diagram of embodiment one of the present application; Figure 5 is the overall structure schematic diagram of embodiment two of the present application; Figure 6is an exploded structure schematic diagram of the second embodiment of the present application; Figure 7 is a locking piece structure schematic diagram of the second embodiment of the present application; Figure 8 is a cross-sectional structure schematic diagram of the second embodiment of the present application; Figure 9 is a whole structure schematic diagram of the third embodiment of the present application; Figure 10 is an exploded structure schematic diagram of the third embodiment of the present application; Figure 11 is a cross-sectional structure schematic diagram of the third embodiment of the present application; Figure 12 is a sliding rail structure schematic diagram of the prior art. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0022] As shown in the drawings, Figure 1 The present application provides a roller type sliding rail mechanism to prevent misplacement, which mainly comprises an inner rail 1, an outer rail 2 and a roller 3 arranged on the inner rail 1. The inner rail 1 and the outer rail 2 are both in a long strip structure, which enables them to move relatively in the axial direction to meet the linear motion requirements in different scenarios. The roller 3 arranged on the inner rail 1 is a key component to realize smooth movement. Through a unique mounting method, it can not only rotate by itself, but also tightly cooperate with the outer rail 2 to ensure the stability of the inner rail 1 during movement and effectively prevent misplacement.

[0023] The cross section of the outer rail 2 is in a U-shaped structure, the inner rail 1 is located in the U-shaped structure center slot of the outer rail 2, and the outer edge of the roller 3 is rolled in the inner wall of the center slot of the outer rail 2. When the roller 3 rotates under the action of external force, it will drive the inner rail 1 to move along the axial direction of the outer rail 2. This structural layout uses the rolling friction of the roller 3 to replace the sliding friction, greatly reduces the friction during movement, and makes the relative movement between the inner rail 1 and the outer rail 2 more smooth. At the same time, the tight fit of the roller 3 with the inner wall of the outer rail 2 and the fixing method of the roller 3 on the inner rail 1 work together to realize the function of preventing misplacement.

[0024] The inner rail 1 is in a long strip structure, and its shape and the distribution method of the positioning groove 101 have multiple forms to adapt to different use requirements.

[0025] AsFigure 3 , Figure 4 As shown, one configuration has two sets of symmetrically arranged "U"-shaped structures for the inner rail 1, each facing outwards. Several sets of outwardly opening positioning grooves 101 are symmetrically formed on the upper and lower parts of the outer walls of these "U"-shaped structures. This symmetrical distribution of positioning grooves 101 allows for even support of the rollers 3, resulting in more balanced force distribution on the inner rail 1 during movement and thus improving the stability of the mechanism. Simultaneously, the symmetrical design also increases the versatility of the mechanism, allowing for flexible installation of the rollers 3 according to actual conditions, maintaining the stability of the inner rail 1 as it moves along the inner wall of the outer rail 2.

[0026] Another design features an inner rail 1 that is integrally molded, with staggered positioning grooves 101 on both outer sides. These staggered positioning grooves 101 allow for an increased number of rollers 3 within a limited space, thereby improving the load-bearing capacity and motion stability of the inner rail 1. This design is suitable for applications requiring large loads or high motion precision. By rationally distributing the rollers 3, the load can be effectively dispersed, reducing deformation of the inner rail 1.

[0027] One-piece molding and clearance: The one-piece molding structure of inner rail 1 offers numerous advantages. The one-piece molding process makes the structure of inner rail 1 more robust, reduces weak points caused by splicing, and improves the overall strength and rigidity of inner rail 1. This allows inner rail 1 to better withstand external forces and maintain stable performance in complex working environments.

[0028] A clearance 102 is formed around the inner rail 1 where the positioning groove 101 is located. When the end of the roller 3 engages with the positioning groove 101, the positioning groove 101 may deform to a certain extent due to manufacturing errors or external forces. At this time, the redundancy created by the clearance space when the positioning groove 101 deforms will be squeezed in the clearance 102, avoiding the problem of the roller 3 not being securely installed (or unable to be squeezed into place or unable to rotate normally after installation) due to the deformation of the positioning groove 101. The existence of the clearance 102 improves the fault tolerance of the mechanism, enhances the adaptability of the mechanism under different working conditions, and ensures the long-term stable operation of the roller slide mechanism.

[0029] The roller 3 is the core component that enables smooth sliding in the entire slide rail mechanism. The center of the roller 3 has a rotating shaft 301 that extends through and protrudes to both sides, so that the roller 3 can be connected to the positioning groove 101 or positioning hole 103 on the inner rail 1 through the rotating shaft 301.

[0030] In terms of connection method, the rotating shaft 301 and the positioning groove 101 only rotate axially. This connection method ensures that the roller 3 can rotate flexibly while limiting its displacement in other directions, thus ensuring the stability of the roller 3 during operation. When the inner rail 1 needs to move along the outer rail 2 under the action of external force, the roller 3 can easily roll by rotating the rotating shaft 301 in the positioning groove 101, driving the inner rail 1 to move smoothly.

[0031] In this roller-type slide rail mechanism, the roller 3 employs a unique material design to meet the needs of various usage scenarios. It can be made of a single piece of molded metal, which boasts advantages such as high strength, high wear resistance, and good thermal conductivity. The metal roller 3, with its high strength and wear resistance, can operate stably for extended periods without easily experiencing wear or deformation, ensuring the normal operation of the slide rail mechanism. Furthermore, plastic balls are formed around the outer periphery of the roller 3, with metal shafts 301 fixed through and fixed at both ends of the plastic balls. This combination of metal and plastic design fully utilizes the advantages of both materials. The plastic balls have good elasticity and a low coefficient of friction, reducing frictional resistance between the roller 3 and the outer rail 2, making the movement of the inner rail 1 smoother. Simultaneously, the plastic balls also have a certain degree of shock absorption and noise reduction. In environments with high noise and vibration requirements, such as precision instruments and high-end furniture, this type of roller 3 can effectively reduce operating noise and vibration, providing a quieter and more comfortable user experience.

[0032] The outer rail 2 has a U-shaped cross-section, providing precise guidance for the movement of the inner rail 1. The inner rail 1 is located within the central groove of the U-shaped structure of the outer rail 2, and the outer edge of the roller 3 rolls against the inner wall of the central groove of the outer rail 2. The two side walls of the U-shaped structure effectively restrict the horizontal displacement of the roller 3, preventing the inner rail 1 from shifting left or right during movement. This ensures that the relative movement between the inner rail 1 and the outer rail 2 always proceeds along the axial direction, effectively avoiding misalignment.

[0033] An axially curved channel 201 is formed on the inner wall of the central groove of the outer rail 2. This is another important design feature that enhances the performance of the roller-type slide rail mechanism. The design of the curved channel 201 allows the outer diameter of the roller 3 to roll within it in a close fit. The matching of the curved channel 201 with the outer diameter of the roller 3 provides a larger contact area for the roller 3. When the roller 3 rolls within the curved channel 201, the increased contact area allows the pressure borne by the roller 3 to be distributed more evenly, reducing wear on the surface of the roller 3 and extending its service life.

[0034] The design of the arc-shaped channel 201 can also make the rolling of the roller 3 smoother. Since the shape of the arc-shaped channel 201 fits the rolling track of the roller 3, the roller 3 can run more stably during the rolling process, reducing the phenomena of shaking and jamming. In precision instrument equipment, the requirement for the running accuracy of the slide rail mechanism is extremely high. The arc-shaped channel 201 can ensure that the inner rail 1 moves more smoothly, thereby improving the working accuracy of the instrument equipment. In addition, the arc-shaped channel 201 can also absorb the vibration and impact force generated when the roller 3 rolls to a certain extent, further enhancing the stability and reliability of the mechanism.

[0035] The first locking holes 12 and the second locking holes 21 are respectively opened on the inner rail 1 and the outer rail 2. The inner rail 1 is fixed by locking through the first locking holes 12, and the outer rail 2 is fixed by locking through the second locking holes 21. During the use process, the inner rail 1 and the outer rail 2 can slide relative to each other by respectively fixing the first locking holes 12 and the second locking holes 21.

[0036] Embodiment 1: As Figure 1 、 Figure 2 、 Figure 4 shown, in this embodiment, the inner rail 1 adopts two groups of left-right symmetric and "匚"-shaped structures respectively presenting outward. This structure of the inner rail has strong adaptability and can be assembled and finely adjusted for the inner rail 1 in various environments. A number of groups of positioning grooves 101 opening outward are symmetrically arranged on the upper and lower parts of the outer side wall of the "匚"-shaped structure. The rotating shafts 301 extending from both ends of the roller 3 are simultaneously engaged in the upper and lower symmetric positioning grooves 101. Then, through the assembly between the inner rail 1 and the outer rail 2, and by fitting the outer wall where the roller 3 is located to the inner wall where the outer rail 2 is located, the assembly of the overall structure is achieved.

[0037] Embodiment 2: As Figure 5 、 Figure 6 、 Figure 8 shown, in this embodiment, the inner rail 1 adopts two groups of left-right symmetric and "匚"-shaped structures respectively presenting outward. A number of groups of positioning grooves 101 opening outward are arranged on the upper / lower part of the outer side wall of the "匚"-shaped structure. At the same time, positioning holes 103 concentric with the positioning grooves 101 are opened on the lower / upper part of the outer side wall where the inner rail 1 is located. The roller 3 is made of an integrally formed metal material, and a rotating shaft 301 penetrates through the center and protrudes on both sides. One end of the rotating shaft 301 is rotatably connected in the positioning hole 103, and the other end is assembled in the positioning groove 101. And a locking member 11 is fixed on the end face of the inner rail 1 where the positioning groove 101 is located (refer to Figure 7(As shown). The locking member 11 is a strip-shaped structure and is locked and fixed along the outer edge of the inner rail 1. A positioning component 111 is provided on the outside of the positioning groove 101 where the locking member 11 is located. The positioning component 111 and the locking member 11 are integrally formed and form a limit on the rotation shaft 301 of the roller 3 in the opening direction of the positioning groove 101.

[0038] The outer rail 2 has a U-shaped cross-section, and the inner wall of the central slot forms an arc-shaped channel 201 along the axial direction.

[0039] During assembly, first install the roller 3 on the positioning groove 101 and positioning hole 103 of the inner rail 1 via the rotating shaft 301 to ensure that the roller 3 can rotate flexibly. Then, place the inner rail 1 with the roller 3 installed in the U-shaped center groove of the outer rail 2 so that the outer edge of the roller 3 fits into the arc-shaped channel 201.

[0040] Its working principle involves the cooperation of the locking component 11 and the positioning component 111 to double-limit the rotation shaft 301 of the roller 3, thereby enhancing the stability of the roller 3 installation and further preventing misalignment between the inner rail 1 and the outer rail 2 during relative movement. During installation, the roller 3 is first installed on the inner rail 1, and then the locking component 11 is fixed along the outer edge of the inner rail 1 to ensure that the positioning component 111 accurately limits the rotation shaft 301 of the roller 3.

[0041] Example 3: like Figure 9 , Figure 10 , Figure 11 As shown, in this embodiment, the inner rail 1 adopts a one-piece molded structure, and positioning grooves 101 are staggered on both outer sides of the inner rail 1 to increase the number of rollers 3 installed and improve the load-bearing capacity. The rollers 3 are made of metal to enhance their strength and wear resistance, and can withstand greater pressure. The U-shaped structure of the outer rail 2 has been thickened to improve its structural strength and better withstand high loads.

[0042] This anti-misalignment roller-type slide rail mechanism demonstrates superior performance advantages thanks to its unique structural design and innovative technological concept. Through meticulous design and optimization of the inner rail, rollers, and outer rail, the mechanism achieves high-precision positioning and stable operation, effectively solving the misalignment problem common in traditional slide rail mechanisms. In various application areas, such as industrial automation, home furnishings, and everyday consumer goods, this mechanism plays a vital role in improving equipment efficiency and user experience.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A misalignment preventing roller slide rail mechanism characterized by comprising: It includes inner rail (1), outer rail (2) and roller (3) arranged on the inner rail (1); The inner rail (1) and the outer rail (2) are both in long strip structure; A plurality of groups of positioning grooves (101) are arranged on the outer side of the inner rail (1), and the roller (3) is fixed in the positioning grooves (101), so that the outer edge of the roller (3) protrudes from the outer edge of the inner rail (1) and is parallel to each other, and self-rotation is realized. The center of the roller (3) penetrates and protrudes to both sides, and the shaft (301) is only axially rotated with the positioning groove (101). The cross section of the outer rail (2) is in U-shaped structure, and the inner rail (1) is located in the U-shaped structure of the outer rail (2), so that the outer edge of the roller (3) is rolled in the inner wall of the center slot of the outer rail (2), thereby driving the relative movement of the inner rail (1) and the outer rail (2) in the axial direction.

2. The misalignment preventing roller type slide rail mechanism according to claim 1, wherein The inner rail (1) is in two groups of left-right symmetrical " " type structure, and a plurality of groups of positioning grooves (101) are symmetrically arranged on the upper and lower parts of the outer side wall of the " " type structure.

3. The misalignment preventing roller type slide rail mechanism according to claim 1, wherein The inner rail (1) is an integral structure, and the positioning grooves (101) are staggered on both outer sides of the inner rail (1).

4. The misalignment preventing roller type slide rail mechanism according to claim 2 or 3, characterized by The inner rail (1) is in two groups of left-right symmetrical structure and presents " " type structure to the outer side, and a plurality of groups of positioning grooves (101) are arranged on the upper part / lower part of the outer side wall of the " " type structure of the inner rail (1), and positioning holes (103) are concentrically arranged on the lower part / upper part of the outer side wall of the inner rail (1), so that one end of the roller (3) is rotatably connected in the positioning hole (103), the other end is assembled on the positioning groove (101), and a locking member (11) is fixed on the end surface of the inner rail (1) where the positioning groove (101) is located.

5. The misalignment preventing roller-type slide rail mechanism according to claim 1, wherein The locking member (11) is in strip structure, and is locked and fixed along the end surface of the outer edge of the inner rail (1), and a positioning assembly (111) is arranged on the outer side of the positioning groove (101) where the locking member (11) is located.

6. The misalignment preventing roller-type slide rail mechanism according to claim 5, wherein The positioning assembly (111) and the locking member (11) are in integral structure, and the positioning assembly (111) is limited in the opening direction of the positioning groove (101). The roller (3) is made of metal material by integral molding.

7. The misalignment preventing roller-type slide rail mechanism according to claim 1, wherein The outer periphery of the roller (3) is formed with plastic balls, and metal shafts (301) are fixed at both ends of the plastic balls.

8. The misalignment preventing roller-type slide rail mechanism according to claim 1, wherein ​ 9. The misalignment preventing roller-type slide rail mechanism according to claim 1, wherein First locking holes (12) and second locking holes (21) are respectively arranged on the inner rail (1) and the outer rail (2), the inner rail (1) is fixed by locking through the first locking holes (12), and the outer rail (2) is fixed by locking through the second locking holes (21).

10. The misalignment preventing roller-type slide rail mechanism according to claim 1, wherein An arc-shaped channel (201) is formed on the inner wall of the central slot of the outer rail (2) along the axial direction, so that the outer diameter of the roller (3) is fitted in the arc-shaped channel (201) to roll.

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