Slide rail supporting structure, seat slide rail and vehicle

Abstract

The utility model provides a sliding rail supporting structure, a seat sliding rail and a vehicle, and belongs to the technical field of vehicle accessories, the sliding rail supporting structure comprises a rotating shaft arranged on a movable sliding rail, a mounting cylinder rotationally arranged on the rotating shaft, and bearings arranged at the two ends of the mounting cylinder. Wherein the rotating shaft is arranged in the length direction of the movable sliding rail, the mounting cylinder is arranged in the radial direction of the rotating shaft and can vertically swing around the rotating shaft within a preset angle, and the bearings at the two ends are used for abutting against the fixed sliding rail. According to the sliding rail supporting structure, the mounting cylinder can automatically adjust the height positions of the bearings at the two ends through swinging of the mounting cylinder and automatically compensate the height difference, so that the problem that only part of the bearings are stressed due to the height difference can be effectively avoided, it is ensured that force is evenly distributed on the two bearings, and the service life of the bearings can be effectively prolonged. And meanwhile, the bearing with balanced stress enables the supporting surface of the fixed sliding rail not to generate pits due to overlarge local stress, so that a shaking source caused by the pits can be effectively eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle parts technical field, especially a slide rail support structure, and the utility model relates to a seat slide rail provided with the slide rail support structure and a vehicle provided with the seat slide rail. BACKGROUND

[0002] The conventional vehicle slide rail mechanism generally adopts multiple support bearings to achieve the relative sliding fit design between the upper and lower rails. On the one hand, due to the limitations of the machining process and the cumulative errors of the assembly links, the bearing support planes and the corresponding mounting holes are difficult to ensure that they are completely on the same height plane, and there is inevitably a height difference. Especially for two bearings that are adjacent in position and close in distance on the slide rail structure, the negative effects caused by this height difference are greater.

[0003] Because of the interference of the above-mentioned height difference, the multiple support bearings originally designed to be uniformly distributed in stress can only effectively participate in the load generated by the relative motion of the upper and lower rails under actual working conditions. In this way, the bearings participating in the stress bear a pressure far exceeding their reasonable design value, and under the long-term high load state, the wear rate of the bearings is rapidly accelerated, and the fatigue life is greatly shortened, which not only increases the frequency and cost of vehicle part replacement and maintenance, but also poses a hidden danger to the reliability and safety of the vehicle as a whole. SUMMARY

[0004] Therefore, the utility model aims to provide a slide rail support structure to automatically compensate for the height difference of the two bearings.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A slide rail support structure, comprising a rotating shaft provided on a movable slide rail, an installation cylinder rotatably provided on the rotating shaft, and bearings provided at both ends of the installation cylinder;

[0007] The rotating shaft is arranged along the length direction of the movable slide rail, the installation cylinder is arranged along the radial direction of the rotating shaft, and the installation cylinder can swing up and down within a preset angle around the rotating shaft, and the bearings at both ends are used to abut against a fixed slide rail.

[0008] Further, a connecting shaft is arranged on the rotating shaft, and the connecting shaft is arranged on the rotating shaft along the radial direction of the rotating shaft;

[0009] The connecting shaft is connected with the two side walls of the movable slide rail, and the connecting shaft and the installation cylinder have a radial gap for the swinging of the installation cylinder.

[0010] Further, the movable slide rail is provided with a limiting part, the limiting part can limit rotation of the rotating shaft and keep the rotating shaft along the length direction of the movable slide rail.

[0011] Further, the limiting part comprises a limiting block provided on the side wall of the movable slide rail, and the limiting block is two blocks provided on the front and back of the mounting cylinder.

[0012] Corresponding to the limiting block, the mounting cylinder is provided with a limiting surface on two opposite sides, and the limiting surface and the limiting block abut to limit the front and back rotation of the mounting cylinder and the rotating shaft.

[0013] Further, one end of the connecting shaft is provided with an outwardly convex mounting convex ring along the radial direction of the connecting shaft, and a plurality of teeth are arranged on the outer peripheral wall of the mounting convex ring.

[0014] The connecting shaft is interference fitted on the side wall of one side of the movable slide rail through the mounting convex ring.

[0015] Further, the mounting cylinder comprises a body part and mounting parts provided on both ends of the body part.

[0016] The mounting cylinder is rotatably arranged on the rotating shaft through the body part, the outer diameter of the mounting part is smaller than the outer diameter of the body part, and the bearings on both ends are arranged on the mounting parts on the corresponding ends.

[0017] Further, the bearing is provided with a protective sleeve, and the bearing abuts against the fixed slide rail through the protective sleeve.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The slide rail supporting structure can make the mounting cylinder swing up and down within a preset angle around the rotating shaft, so that when there is a height deviation at different positions of the fixed slide rail, the mounting cylinder can automatically adjust the height position of the bearings on both ends through the swing of the mounting cylinder, so that the mounting cylinder always abuts against the fixed slide rail well, and the height difference is automatically compensated, thereby effectively avoiding the problem that only part of the bearings are stressed due to the height difference, ensuring that the force is uniformly distributed on the two bearings, and effectively prolonging the service life of the bearings.

[0020] In addition, by setting the connecting shaft protruding outward relative to the mounting cylinder, the rotating shaft is connected with the movable slide rail, compared with the form of setting the fixing structure outside the rotating shaft, the support structure has better appearance; at the same time, the setting of the connecting shaft can also better limit the axial displacement of the mounting cylinder, and the setting of other limiting structures can be omitted. By reserving a radial gap between the connecting shaft and the mounting cylinder for the swinging of the mounting cylinder, it can not only ensure that the mounting cylinder can freely swing within the preset angle to adapt to the height difference, and the self-adaptive function will not be hindered due to the existence of the connecting shaft; at the same time, it can also avoid the damage of the structure or the interference with other parts caused by excessive swinging of the mounting cylinder.

[0021] By setting the limiting part limiting the rotation of the rotating shaft, the rotation of the rotating shaft can be prevented, and the mounting cylinder cannot normally swing to compensate for the height difference, which is beneficial to effectively constrain the rotation degree of freedom of the rotating shaft, so that it is always stably arranged along the length direction of the movable slide rail, thereby the slide rail support structure can better play the functions of self-adaptive adjustment and load bearing; at the same time, the limiting part also makes the positioning and installation of the rotating shaft simple, which is beneficial to ensure that the rotating shaft is in the correct axial direction, thereby the assembly efficiency can be greatly improved, and the assembly time and labor cost can be reduced.

[0022] The limiting part includes a limiting block arranged on the side wall of the movable slide rail, which not only has a simple structure and is easy to design and implement, but also can fully utilize the space around the slide rail system; in addition, since the limiting surface is directly arranged on the two opposite sides of the mounting cylinder, it is not necessary to additionally increase complex limiting parts, thereby the occupation of limited space can be reduced, and the space utilization efficiency can be improved.

[0023] Secondly, by setting the mounting convex ring at one end of the connecting shaft and using interference installation with the side wall of one side of the movable slide rail, and by setting a plurality of teeth on the outer peripheral wall of the mounting convex ring, the connection firmness between the connecting shaft and the movable slide rail can be effectively enhanced, thereby the connection effect between the support structure and the movable slide rail can be guaranteed.

[0024] By setting the outer diameter of the body part to be larger than the outer diameter of the mounting part, the body part can be rotatably arranged on the rotating shaft, and sufficient contact area between the body part and the rotating shaft can be ensured, thereby the stability of rotation can be guaranteed. At the same time, the outer diameter of the mounting part is smaller, so that the body part can be matched with the side wall of the movable slide rail, the axial displacement of the bearing can be limited, and the bearing can be prevented from coming out.

[0025] In addition, by setting the protective sleeve on the bearing, the overall structural strength of the bearing can be increased, and by abutting the protective sleeve with the fixed slide rail, the wear and deformation of the bearing can be reduced, thereby the operation reliability of the slide rail support structure is further improved; and compared with the bearing, the protective sleeve has a relatively simple structure and low cost, and in the maintenance process, if the protective sleeve is damaged or worn, only the protective sleeve needs to be replaced, without the need to disassemble and replace the entire bearing, thereby the maintenance cost and time are greatly reduced.

[0026] Another purpose of the utility model lies in providing a seat slide rail, the movable slide rail of seat slide rail is equipped with the slide rail support structure as described above.

[0027] The seat slide rail, through the slide rail support structure as described above, can compensate the height difference, so that the seat is more stable and smooth in the adjustment process, can effectively ensure that the bearing is always in good contact with the fixed slide rail, avoid the seat to appear the jam, the shaking and so on when adjusting.

[0028] In addition, the utility model further provides a vehicle, the vehicle is equipped with the seat slide rail as described above.

[0029] The vehicle, through the seat slide rail as described above, the sleeve in the slide rail support structure can swing around the rotating shaft to compensate the height difference, avoids the seat to appear the jam, the shaking and so on when adjusting, provides more comfortable riding posture for the driver and passenger, and can prolong the service life of the whole seat slide rail. BRIEF DESCRIPTION OF DRAWINGS

[0030] The drawings that constitute a part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation to the utility model.

[0031] Figure 1 The structure schematic view of slide rail support structure under the first visual angle for the embodiment of the utility model is described;

[0032] Figure 2 The structure schematic view of slide rail support structure under the second visual angle for the embodiment of the utility model is described;

[0033] Figure 3 The structure schematic view of slide rail support structure under the third visual angle for the embodiment of the utility model is described;

[0034] Figure 4 The structure schematic view of slide rail support structure under the third visual angle for the embodiment of the utility model is described; Figure 3 The sectional view of A-A line in;

[0035] Figure 5 The application state diagram of slide rail support structure for the embodiment of the utility model is described;

[0036] Figure 6 The sectional view of B-B line in; Figure 5 The sectional view of B-B line in;

[0037] Figure 7The layout structure schematic diagram of the movable slide rail is shown in the embodiments of the present utility model.

[0038] Figure 8 The structure schematic diagram of the rotating shaft is shown in the embodiments of the present utility model.

[0039] Figure 9 The structure schematic diagram of the rotating shaft from another perspective is shown in the embodiments of the present utility model.

[0040] Figure 10 Another structure schematic diagram of the rotating shaft is shown in the embodiments of the present utility model.

[0041] Figure 11 The structure schematic diagram of the mounting cylinder is shown in the embodiments of the present utility model.

[0042] Figure 12 The sectional view of the mounting cylinder is shown in the embodiments of the present utility model.

[0043] Figure 13 The structure schematic diagram of the connecting shaft is shown in the embodiments of the present utility model.

[0044] Explanation of reference signs:

[0045] 1, rotating shaft; 2, mounting cylinder; 3, bearing; 4, connecting shaft; 5, movable slide rail; 6, limiting block;

[0046] 101, body section; 102, flange; 103, connecting section;

[0047] 201, body part; 202, mounting part; 2021, limiting surface;

[0048] 501, side wall. DETAILED DESCRIPTION

[0049] It should be noted that the embodiments in the present utility model and the features in the embodiments can be combined with each other without conflict.

[0050] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0051] In addition, in the description of the utility model, unless otherwise explicitly limited, the terms "mounting", "connection", "connecting", "connecting piece" should be understood broadly. For example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be internal communication of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with specific circumstances.

[0052] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0053] The vehicle slide rail in the prior art usually adopts a plurality of support bearings 3 to achieve the relative sliding fit design between the movable slide rail 5 and the fixed slide rail, that is, the upper and lower rails. However, due to the limitations of the processing technology and the cumulative errors of the assembly link, the support planes of the bearings 3 are difficult to ensure completely on the same height plane, and there is inevitably a height difference. Because of the interference of the above-mentioned height difference, the plurality of bearings 3 originally designed to be uniformly distributed in stress can only effectively participate in the load generated by the relative motion of the upper and lower rails under actual working conditions. In this way, the wear rate of the bearings 3 is accelerated sharply, and the fatigue life is greatly shortened.

[0054] In addition, the uneven stress condition further affects the lower rail support surface. Due to excessive local stress, the stress borne by the lower rail support surface far exceeds the material yield limit, and for a long time, pits gradually occur in the key parts in contact with the bearings 3. These pits in turn destroy the smoothness in the sliding process of the upper and lower rails, causing the slide rail to frequently vibrate when running. This vibration not only makes the driver and passenger feel obvious discomfort, reduces the riding experience, but also may cause secondary problems such as loosening and abnormal noise of related parts.

[0055] Therefore, the embodiment proposes a new slide rail support structure. In the overall structure, it comprises a rotating shaft 1 arranged on the movable slide rail 5, a mounting cylinder 2 rotatably arranged on the rotating shaft 1, and bearings 3 arranged at both ends of the mounting cylinder 2. Among them, the rotating shaft 1 is arranged along the length direction of the movable slide rail 5, the mounting cylinder 2 is arranged along the radial direction of the rotating shaft 1 and can swing up and down within a preset angle around the rotating shaft 1, and the bearings 3 at both ends are used to abut against the fixed slide rail.

[0056] The sliding rail support structure of the embodiment can automatically adjust the height position of the two bearings 3 by swinging the mounting cylinder 2, so that the mounting cylinder 2 always maintains good abutment with the fixed sliding rail and automatically compensates for the height difference when encountering height deviations at different positions on the fixed sliding rail. Thus, the problem of only part of the bearings 3 being stressed due to the height difference can be effectively avoided, the force is evenly distributed on the two bearings 3, and the service life of the bearings 3 is greatly improved. At the same time, the bearings 3 under balanced stress can prevent the support surface of the fixed sliding rail from being concave due to excessive local stress, thereby ensuring the flatness of the surface of the fixed sliding rail and effectively eliminating the shaking source caused by the concave, thereby facilitating the realization of smoother sliding effect.

[0057] Based on the above overall introduction, an exemplary structure of the sliding rail support structure of the embodiment is shown in Figures 1 to 6 The structure of the movable sliding rail 5 is the same as the existing structure and has two side walls 501 arranged opposite to each other, and the fixed sliding rail has support protrusions arranged adjacent to the two side walls 501, respectively, and the bearings 3 abut on the support protrusions of the corresponding side. The specific structures of the movable sliding rail 5 and the fixed sliding rail can refer to the upper and lower sliding rail structures of the existing vehicle seat, which will not be described here. In addition, as a specific embodiment, the bearings 3 of the embodiment are deep groove ball bearings, which have the advantages of small friction coefficient, high limit speed, simple structure, and low cost. Of course, in specific implementation, the bearings 3 can also be selected from other bearings 3 such as cylindrical roller bearings or tapered roller bearings according to design requirements.

[0058] In some embodiments, the bearings 3 are provided with protective sleeves, and the bearings 3 abut on the fixed sliding rail through the protective sleeves. By providing the protective sleeves, the overall structural strength of the bearings 3 can be enhanced, the friction between the bearings 3 and the fixed sliding rail can be effectively buffered, and the direct wear of the surface of the bearings 3 can be reduced, thereby prolonging the service life of the bearings 3. In addition, due to the provision of the protective sleeves, the vibration and noise of the bearings 3 during rotation can be effectively suppressed, the vibration and noise generated by the bearings 3 due to uneven wear or collision can be reduced, the sliding rail support structure runs more smoothly and quietly, and the overall driving experience of the vehicle is improved.

[0059] Moreover, the protective sleeves have a relatively simple structure and low cost relative to the bearings 3. During maintenance, if the protective sleeves are damaged or worn, only the protective sleeves need to be replaced, without the need to disassemble and replace the entire bearings 3, thereby greatly reducing the maintenance cost and time. Moreover, the operation of replacing the protective sleeves is relatively simple and does not require complex tools and professional skills, thereby improving the maintainability and maintenance efficiency of the equipment.

[0060] The protective sleeve is usually made of a material with certain elasticity and wear resistance, and the material commonly used in the prior art can be used, for example, PEEK+CF30, which is a carbon fiber reinforced polyether ether ketone composite material, wherein CF30 represents that the content of carbon fiber is 30%, and the material with the brand of Solvay: KT-820CF30 can be used.

[0061] In addition, as shown in Figure 1 , Figure 2 and Figure 6 , the connecting shaft 4 is arranged on the rotating shaft 1 and penetrates the rotating shaft 1 in the radial direction of the rotating shaft 1. The connecting shaft 4 is connected to the two side walls 501 of the movable slide rail 5, and the connecting shaft 4 and the mounting cylinder 2 have a radial gap for the swinging of the mounting cylinder 2. Here, by arranging the connecting shaft 4, the rotating shaft 1 can be arranged on the side wall 501 of the movable slide rail 5, and compared with the form of arranging a fixed structure outside the rotating shaft 1, the support structure has better appearance. At the same time, the arrangement of the connecting shaft 4 can also better limit the axial displacement of the mounting cylinder 2, and the arrangement of other limiting structures can be omitted.

[0062] By reserving a radial gap for the swinging of the mounting cylinder 2 between the connecting shaft 4 and the mounting cylinder 2, on the one hand, the mounting cylinder 2 can freely swing within a predetermined angle to adapt to the height difference, and the self-adaptive function is not hindered by the existence of the connecting shaft 4. On the other hand, the gap reasonably limits the swinging range of the mounting cylinder 2, avoids the mounting cylinder 2 from deviating from the control range due to excessive swinging, causes structural damage or interference with other components, and ensures the reliability and controllability of the structure.

[0063] Further, the movable slide rail 5 is provided with a limiting part, which can limit the rotation of the rotating shaft 1 and keep the rotating shaft 1 arranged in the length direction of the movable slide rail 5. Since the vehicle will be subjected to various complex forces during driving, if the rotating shaft 1 rotates randomly under the action of these external forces, the precise design of the entire slide rail support structure will be damaged. The arrangement of the limiting part can effectively constrain the rotational freedom of the rotating shaft 1, so that it is always arranged in the length direction of the movable slide rail 5, which can effectively reduce the risk of mechanical interference caused by the deviation of the rotating shaft 1 from the predetermined direction. In this way, the mounting cylinder 2 can stably swing around the rotating shaft 1 and stably play the function of self-adaptive adjustment of the height difference, so as to ensure that the bearing 3 and the fixed slide rail keep a good abutting state, which is beneficial to ensuring the precision and reliability of the sliding cooperation between the slide rails and maintaining the stable operation of the slide rail support structure.

[0064] In detail, as a specific embodiment, refer to Figure 8 and Figure 9As shown, the rotating shaft 1 in this embodiment includes a body section 101, a flange 102 at one end of the body section 101, and a connecting section 103 at the other end of the body section 101. By providing the flange 102 and the connecting section 103 on the rotating shaft 1, it is convenient to further provide a connecting member connected to the side wall 501 on the connecting section 103 as needed, thereby improving the installation firmness. Alternatively, a limiting member can be further provided on the connecting section 103 to further constrain the mounting cylinder 2 between the limiting member and the flange 102. This further prevents the mounting cylinder 2 from moving axially on the rotating shaft 1, ensuring that the mounting cylinder 2 and the bearings 3 at both ends are always in the predetermined working position, thus facilitating stable support and smooth sliding.

[0065] In addition, as a specific embodiment, the body segment 101 is cylindrical and has a through hole for the connecting shaft 4 to pass through. Meanwhile, the mounting cylinder 2 has a shaft hole adapted to the body segment 101. This contact method can better ensure the smooth rotation of the mounting cylinder 2 around the rotating shaft 1. Furthermore, the cylindrical surface ensures that the friction between the mounting cylinder 2 and the body segment 101 is relatively uniform and low during rotation, preventing jamming or sudden changes in resistance caused by irregular surface shapes. Moreover, it allows for a more uniform force distribution between the mounting cylinder 2 and the body segment 101, effectively avoiding the problem of localized stress concentration.

[0066] It should be noted that when the connecting shaft 4 alone can meet the connection strength requirements between the rotating shaft 1 and the movable slide rail 5, and can effectively limit the axial displacement of the mounting cylinder 2, the rotating shaft 1, in addition to using... Figure 8 and Figure 9 The structure shown can also be adopted Figure 10 The structure shown is such that the connecting shaft 4 is cylindrical in shape, which is sufficient to support the up-and-down swing of the mounting cylinder 2.

[0067] Furthermore, as a preferred embodiment, see [link to previous document]. Figure 11 and Figure 12 As shown, the mounting cylinder 2 in this embodiment includes a main body 201 and mounting portions 202 disposed at both ends of the main body 201. The mounting cylinder 2 is rotatably mounted on the rotating shaft 1 via the main body 201. The outer diameter of the mounting portions 202 is smaller than the outer diameter of the main body 201, and the bearings 3 at both ends are respectively disposed on the corresponding mounting portions 202. In this structure, by making the outer diameter of the mounting portions 202 at both ends smaller than the outer diameter of the main body 201, the bearings 3 can be positioned more effectively on the mounting portions 202. Furthermore, during assembly, it is easier for workers to fit the bearings 3 into the smaller-diameter mounting portions 202, reducing installation difficulty and improving assembly efficiency.

[0068] Meanwhile, due to the small outer diameter of the mounting portion 202, compared with the design of the same large outer diameter as a whole, the use amount of material is reduced on the basis of ensuring the basic functions of the mounting cylinder 2, thereby reducing the overall weight of the mounting cylinder 2. The relatively large outer diameter of the body portion 201 undertakes the main rotating and supporting functions, which can ensure sufficient contact area between the body portion 201 and the rotating shaft 1, ensure the stability of rotation, and is not easy to deform or displace. The small outer diameter of the mounting portion 202 can make the body portion 201 cooperate with the side wall 501 of the movable sliding rail 5, so as to limit the axial displacement of the bearing 3, which is beneficial to prevent the bearing 3 from coming out.

[0069] In addition, as a preferred embodiment, in combination with the mounting portion 202 shown in Figure 6 and Figure 7 , the limiting portion of the embodiment includes a limiting block 6 provided on the side wall 501 of the movable sliding rail 5, and the limiting block 6 is provided on both sides of the mounting cylinder 2. Furthermore, corresponding to the limiting block 6, the two opposite sides of the mounting cylinder 2 are respectively provided with a limiting surface 2021, and the limiting surface 2021 abuts against the limiting block 6 to limit the forward and backward rotation of the mounting cylinder 2 and the rotating shaft 1.

[0070] In the embodiment, two limiting blocks 6 are respectively arranged on the front and rear sides of the mounting cylinder 2, and the limiting surface 2021 corresponding to the limiting block 6 is arranged to abut against the limiting block 6, which can effectively prevent the unnecessary forward or backward rotation of the mounting cylinder 2 and the rotating shaft 1 caused by external force during the operation of the vehicle, so that the rotating shaft 1 can always be arranged along the length direction of the movable sliding rail 5, thereby ensuring that the mounting cylinder 2 can only swing up and down, and further ensuring the self-adaptive height compensation of the bearing 3. Moreover, the limiting block 6 has a simple structure, is easy to design and implement, and is arranged on the side wall 501 of the movable sliding rail 5, so as to fully utilize the space around the sliding rail system and improve the space utilization efficiency.

[0071] In addition, in order to further improve the setting stability of the support structure, as shown in Figure 13 , one end of the connecting shaft 4 is provided with an installation protruding ring protruding outward along the radial direction of the connecting shaft 4, and a plurality of teeth are arranged on the outer peripheral wall of the installation protruding ring. Furthermore, the connecting shaft 4 is installed on the side wall 501 of one side of the movable sliding rail 5 through the installation protruding ring. In addition, the other end of the connecting shaft 4 is inserted into the side wall 501 of the other side of the movable sliding rail 5. In this way, the connection firmness between the connecting shaft 4 and the movable sliding rail 5 is also enhanced, so that the connecting shaft 4 is not easy to come out of the side wall 501 of the sliding rail.

[0072] The existence of the teeth further increases the friction and mechanical engagement force between the connecting shaft 4 and the side wall 501 of the slide rail, so that the connecting shaft 4 can remain stable and will not loosen or fall off even if the vehicle encounters severe bumps and vibrations during driving, thereby ensuring the reliability of the entire slide rail support structure. At the same time, due to the reliable connection between the connecting shaft 4 and the movable slide rail 5 during the operation of the slide rail, the problem of slide rail shaking and displacement caused by loose connection can be avoided, thereby improving the stability of the operation of the slide rail.

[0073] It should be noted that, in addition to being arranged on the side wall 501 of the movable slide rail 5 through the connecting shaft 4, the rotating shaft 1 can also be fixed to the side wall 501 of the movable slide rail 5 through a bracket without the connecting shaft 4.

[0074] In addition, as a further embodiment, a bushing can be provided between the mounting cylinder 2 and the rotating shaft 1. By providing the bushing, the bushing can bear the friction between the mounting cylinder 2 and the rotating shaft 1 when the mounting cylinder 2 rotates relative to the rotating shaft 1, thereby protecting the surfaces of the rotating shaft 1 and the mounting cylinder 2 from being worn. Compared with the rotating shaft 1 and the mounting cylinder 2 in direct contact, the wear rate of the bushing is relatively slow, and it is more convenient and economical to replace the bushing than to replace the rotating shaft 1 or the mounting cylinder 2. The bushing can be made of conventional materials, such as copper-based alloy, polytetrafluoroethylene, etc. In addition, a bushing can also be provided between the rotating shaft 1 and the connecting shaft 4 according to requirements, and the bushing can be arranged in a conventional manner, which can be referred to the existing structure.

[0075] Based on the above overall description, the mounting cylinder 2 of the present embodiment can swing up and down within a predetermined angle around the rotating shaft 1. Therefore, when there is a height deviation at different positions of the fixed slide rail, the mounting cylinder 2 can automatically adjust the height position of the two end bearings 3 through its own swing, and automatically compensate for the height difference, thereby effectively avoiding the problem that only part of the bearings 3 are stressed due to the height difference. At the same time, the balanced stress of the bearings 3 makes the support surface of the fixed slide rail no longer have pits due to excessive local stress, thereby ensuring the flatness of the surface of the fixed slide rail. During the operation of the slide rail, the shaking source caused by the pits is eliminated, thereby realizing smoother sliding effect, improving the comfort experience of the vehicle passengers, and reducing the risk of secondary failures such as loose associated components and abnormal noise caused by shaking. Moreover, the assembly is simple, the single part has small volume, the structure is simple and compact, and the space occupation is small, which can be applied to different use scenarios.

[0076] In addition, the present embodiment also relates to a seat slide rail, and the movable slide rail 5 of the seat slide rail is provided with the above slide rail support structure.

[0077] The seat slide rail of the embodiment, by setting the slide rail support structure as described above, due to the slide rail support structure being able to adaptively compensate for the height difference, makes the seat more stable and smooth during adjustment, can effectively ensure that the bearing 3 is always in good contact with the fixed slide rail, avoids the seat from appearing stuck, shaking and other situations during adjustment. At the same time, it can make the force evenly distributed on the bearing 3, effectively reduce the wear of the bearing 3, prolong the service life of the bearing 3, and thus can prolong the service life of the entire seat slide rail.

[0078] In addition, the embodiment also relates to a vehicle, which is provided with the seat slide rail as described above.

[0079] The vehicle of the embodiment, by setting the seat slide rail as described above, due to the sleeve in the slide rail support structure being able to swing around the rotating shaft 1 to compensate for the height difference, avoids the seat from appearing stuck, shaking and other problems during adjustment, is beneficial to provide a more comfortable riding posture for the driver and passenger, and can prolong the service life of the entire seat slide rail.

[0080] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A slide rail support structure, characterized in that: a rotating shaft (1) is arranged on a movable slide rail (5); an installation cylinder (2) is arranged on the rotating shaft (1) and rotates on the rotating shaft (1); and bearings (3) are arranged at two ends of the installation cylinder (2) and abut against a fixed slide rail.

2. The slide rail support structure according to claim 1, characterized in that: a connecting shaft (4) is arranged on the rotating shaft (1) and penetrates the rotating shaft (1) in a radial direction of the rotating shaft (1); the connecting shaft (4) is connected to two side walls (501) of the movable slide rail (5); and a radial gap is provided between the connecting shaft (4) and the installation cylinder (2) for swinging of the installation cylinder (2).

3. The slide rail support structure according to claim 2, characterized in that: a limiting part is arranged on the movable slide rail (5) and limits rotation of the rotating shaft (1) and keeps the rotating shaft (1) arranged in a length direction of the movable slide rail (5).

4. The slide rail support structure according to claim 3, characterized in that: the limiting part includes limiting blocks (6) arranged on the side walls (501) of the movable slide rail (5) and arranged on two opposite sides of the installation cylinder (2); and corresponding to the limiting blocks (6), limiting surfaces (2021) are arranged on two opposite sides of the installation cylinder (2) and abut against the limiting blocks (6) to limit forward and backward rotation of the installation cylinder (2) and the rotating shaft (1).

5. The slide rail support structure according to claim 2, characterized in that: an installation convex ring protruding in a radial direction of the connecting shaft (4) is arranged at one end of the connecting shaft (4); and a plurality of teeth are arranged on an outer circumferential wall of the installation convex ring.

6. The slide rail support structure according to claim 1, characterized in that: the installation cylinder (2) includes a body part (201) and installation parts (202) arranged at two ends of the body part (201); and the installation cylinder (2) is arranged on the rotating shaft (1) through the body part (201), an outer diameter of the installation part (202) is smaller than an outer diameter of the body part (201), and the bearings (3) are arranged on the installation parts (202) at two ends, respectively.

7. The slide rail support structure according to any one of claims 1 to 6, characterized in that: a protective sleeve is arranged outside the bearing (3) and the bearing (3) abuts against the fixed slide rail through the protective sleeve.

8. A seat slide rail, characterized in that: the movable slide rail (5) of the seat slide rail is provided with the slide rail support structure according to any one of claims 1 to 7.

9. A vehicle, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The vehicle is provided with the seat slide rail of claim 8.

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