Bicycle rear suspension frame structure

Abstract

The application provides a bicycle rear shock frame structure, which comprises a frame body, a rear upper fork, a rear lower fork and a shock connecting rod. One end of the rear upper fork is rotationally connected with the frame body. One end of the rear lower fork and the other end of the rear upper fork are used for transmission cooperation with a first rotating shaft of a rear wheel. The shock connecting rod is located below the rear upper fork and is rotationally connected with the frame body. One end of the shock connecting rod is movably connected with the other end of the rear lower fork. One end of a shock absorber is rotationally connected with the frame body, and the other end of the shock absorber is rotationally connected with the other end of the shock connecting rod. When the bicycle rear shock frame structure is ridden, a person pedals a pedal, a chain drives the rear wheel to descend, the rear wheel drives the shock connecting rod to rotate through cooperation of the rear upper fork and the rear lower fork, the shock connecting rod pushes the shock absorber to rebound, the frame body ascends, and the ascending and descending are mutually offset, so that the frame body is kept stable during riding, the moving range of the frame body is reduced, the force is reduced, and the riding efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of bicycle technology, and in particular to a bicycle rear suspension frame structure. Background Technology

[0002] Currently, all bicycles on the market include suspension frames. However, when a person sits on a bicycle, their weight presses down on the frame, causing it to drop. At the same time, when riding, the person pedals, causing the chain to lift the rear wheel, which in turn lowers the frame. The combined effect of these two factors results in a relatively soft frame, leading to excessive stress loss during riding and low riding efficiency. Summary of the Invention

[0003] Therefore, it is necessary to provide a bicycle rear suspension frame structure to address the problems of existing bicycle frames being too soft, resulting in excessive force loss and low riding efficiency.

[0004] The technical solution is as follows:

[0005] On the one hand, a bicycle rear suspension frame structure is provided, including:

[0006] The frame itself;

[0007] The rear upper fork, one end of which is rotatably connected to the frame body;

[0008] The rear lower fork, one end of which and the other end of the rear upper fork are both used to engage with the first pivot shaft of the rear wheel for transmission.

[0009] A shock absorber link is located below the rear upper fork and rotatably connected to the frame body; one end of the shock absorber link is movably connected to the other end of the rear lower fork.

[0010] The shock absorber has one end rotatably connected to the vehicle frame body and the other end rotatably connected to the other end of the shock absorber linkage.

[0011] In the bicycle rear suspension frame structure described above, when a person sits on the bicycle, their weight presses down on the frame body, causing it to descend. However, compared to existing suspension frames, the shock-absorbing pivot point in this application is located at the connection between the rear upper fork and the frame body, meaning the pivot point is moved upwards. This increases the anti-squat value of the bicycle rear suspension frame structure. Consequently, when riding, the rider pedals, the chain drives the rear wheel downwards, and the rear wheel, through the rear upper and lower forks, drives the shock-absorbing linkage to rotate. The shock-absorbing linkage pushes the shock absorber to rebound, causing the frame body to rise. This upward and downward movement cancels each other out, ensuring the frame body remains stable during riding. The frame body's movement is reduced, the force is lessened, and riding efficiency is greatly improved. Furthermore, when riding on rough roads, the direction of the shock-absorbing linkage's thrust on the shock absorber is different from the direction of the frame body's impact on the shock absorber, which does not affect the shock absorption effect of the bicycle rear suspension frame structure, thus improving its reliability.

[0012] The technical solution will be further explained below:

[0013] In one embodiment, the frame body has a bottom bracket hole, the outer wall of the bottom bracket hole has a first connecting seat, the first connecting seat has a third shaft hole, the shock absorber links extend along an arc direction, and each of the two shock absorber links has a connecting part on the side near the bottom bracket hole. The bicycle rear shock absorber frame structure also includes a fourth pivot, which passes through the third shaft hole, and both ends of the fourth pivot are correspondingly connected to the two connecting parts. This improves the ease of assembly of the bicycle rear shock absorber frame structure.

[0014] In one embodiment, the outer wall of the connecting portion rolls into contact with the outer wall of the bottom bracket hole. This prevents interference between the frame body and the shock absorber linkage, improving the reliability of the bicycle's rear suspension frame structure.

[0015] In one embodiment, two rear upper forks, two rear lower forks, and two shock absorber links are each provided, with each set correspondingly positioned on opposite sides of the frame body. This allows the rear upper forks, rear lower forks, and shock absorber links to cooperate with the frame body to form a linkage transmission structure. By providing two linkage transmission structures, sufficient thrust is ensured to counteract the pressure exerted on the frame by the rider, thereby increasing the stability of the frame and improving the reliability of the bicycle's rear suspension frame structure.

[0016] In one embodiment, each of the two shock absorber links has a sliding portion at its end away from the shock absorber, and the ends of the two chainstays away from the first pivot point are correspondingly slidably engaged with the two sliding portions. This allows for relative movement between the chainstays and the shock absorber links, ensuring that the chainstays do not interfere with the shock absorber links during riding, thus improving the reliability of the bicycle's rear suspension frame structure.

[0017] In one embodiment, both sliding parts are configured as sliding grooves. The bicycle rear suspension frame structure also includes a sliding rod, which passes through both sliding grooves and slidably engages with both grooves. Both ends of the sliding rod are correspondingly connected to the ends of the two chain forks furthest from the first pivot. This allows for relative movement between the chain forks and the shock absorber linkage, ensuring that the chain forks do not interfere with the shock absorber linkage during riding and improving the reliability of the bicycle rear suspension frame structure.

[0018] In one embodiment, the bicycle rear suspension frame structure further includes a second pivot shaft. Both ends of the second pivot shaft are connected to the ends of the two shock absorber links near the shock absorber. The shock absorber has a first shaft hole at the end near the shock absorber link, and the second pivot shaft passes through the first shaft hole. Thus, the two shock absorber links can push the shock absorber through the second pivot shaft, improving the reliability of the bicycle rear suspension frame structure.

[0019] In one embodiment, the frame body includes a downtube with a second connector rotatably connected to the end of the shock absorber away from the shock absorber linkage. This allows the shock absorber to be connected to the downtube via the second connector, improving the ease of assembly of the bicycle's rear suspension frame structure.

[0020] In one embodiment, a third connecting seat is provided on the side of the frame body near the rear wheel. The third connecting seat has a second axle hole. The bicycle rear suspension frame structure also includes a third pivot, which passes through the second axle hole. The two ends of the third pivot are correspondingly connected to the ends of the two rear upper forks away from the first pivot. In this way, the two rear upper forks, the two rear lower forks, and the two shock absorber links can all maintain synchronous rotation, improving the reliability of the bicycle rear suspension frame structure.

[0021] In one embodiment, the bicycle rear suspension frame structure further includes a drop catch, with the end of the rear top fork away from the frame body and the end of the rear bottom fork away from the shock absorber linkage both fixedly connected to the drop catch. Thus, the drop catch can hook onto the rear wheel axle, ensuring that the rear wheel can drive the rear top and bottom forks to rotate, and the rear bottom fork can push the shock absorber through the shock absorber linkage, improving the ease of assembly of the bicycle rear suspension frame structure. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the rear suspension frame structure of a bicycle according to one embodiment.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10. Bicycle rear suspension frame structure; 100. Frame body; 110. Bottom bracket hole; 111. First connector; 120. Down tube; 121. Second connector; 130. Top tube; 140. Center tube; 141. Third connector; 150. Head tube; 210. Rear seat fork; 220. Rear chain fork; 230. Suspension linkage; 231. Sliding part; 232. Connecting part; 240. Dropout; 300. Shock absorber. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] Currently, all bicycles on the market include suspension frames. However, when a person sits on a bicycle, their weight presses down on the frame, causing it to drop. At the same time, when riding, the person pedals, causing the chain to lift the rear wheel, which also lowers the frame. The combination of these two factors results in a relatively soft frame, leading to excessive stress loss during riding and low riding efficiency.

[0029] Through research and testing, the inventors discovered that with the aforementioned shock-absorbing frame, when a person sits on the bicycle, their weight presses down on the frame, causing it to drop. At the same time, the shock-absorbing pivot point is located at the connection between the rear chainstay 220 and the frame, and the shock-absorbing frame's anti-squat value is less than 100%. This means that when a person pedals, the chain pulls the rear wheel up, causing the frame to drop. The combination of these two factors results in a relatively soft frame (i.e., a large range of frame movement during riding), leading to excessive force loss and low riding efficiency.

[0030] Based on this, the following embodiments of the bicycle rear suspension frame structure 10 of this application are proposed to solve the above-mentioned technical problems.

[0031] like Figure 1 As shown, in one embodiment, a bicycle rear suspension frame structure 10 is provided, including a frame body 100, a rear top fork 210, a rear chain fork 220, a shock absorber link 230, and a shock absorber 300. One end of the rear top fork 210 is rotatably connected to the frame body 100. One end of the rear chain fork 220 and the other end of the rear top fork 210 are both used for transmission with the first axle of the rear wheel. The shock absorber link 230 is located below the rear top fork 210 and is rotatably connected to the frame body 100, with one end of the shock absorber link 230 movably connected to the other end of the rear chain fork 220. One end of the shock absorber 300 is rotatably connected to the frame body 100, and the other end of the shock absorber 300 is rotatably connected to the other end of the shock absorber link 230.

[0032] In the bicycle rear suspension frame structure 10 described in the above embodiment, when a person sits on the bicycle, their weight presses down on the frame body 100, causing the frame body 100 to descend. However, compared to existing suspension frames, the shock-absorbing pivot point in this application is located at the connection between the rear upper fork 210 and the frame body 100, i.e., the shock-absorbing pivot point is moved upward, increasing the anti-squat value of the bicycle rear suspension frame structure 10. Consequently, when riding, as the rider pedals, the chain drives the rear wheel downward. The rear wheel, through the cooperation of the rear upper fork 210 and rear lower fork 220, drives the shock-absorbing linkage 230 to rotate. The shock-absorbing linkage 230 pushes the shock absorber 300 to rebound, causing the frame body 100 to rise. This upward and downward movement cancel each other out, ensuring that the frame body 100 remains stable during riding. The range of motion of the frame body 100 is reduced, the force is reduced, and the riding efficiency is greatly improved. In addition, when riding on poor road surfaces, the direction of the thrust of the shock absorber 230 to the shock absorber 300 is different from the direction of the impact force of the frame body 100 to the shock absorber 300, which does not affect the shock absorption effect of the bicycle rear shock absorber frame structure 10 and improves the reliability of the bicycle rear shock absorber frame structure 10.

[0033] Specifically, in this embodiment, the anti-squat value of the bicycle rear suspension frame structure 10 in this application is greater than 100%. Thus, the bicycle pedals remain stable, and there is a high anti-squat value in the early stages of riding, resulting in higher riding efficiency.

[0034] The number of the rear upper fork 210, rear lower fork 220, and shock absorber link 230 can be flexibly adjusted according to actual usage needs. For example, the rear upper fork 210, rear lower fork 220, and shock absorber link 230 can cooperate to form a linkage drive structure; when there is one connecting drive structure, the linkage drive structure is located on one side of the frame body 100; when there are two connecting drive structures, the linkage drive structures are located on opposite sides of the frame body 100. This application uses two connecting drive structures as an example for illustration and should not be construed as a limitation of this application.

[0035] In one embodiment, two rear upper forks 210, two rear lower forks 220, and two shock absorber links 230 are each provided, with the two rear upper forks 210, the two rear lower forks 220, and the two shock absorber links 230 being correspondingly arranged on opposite sides of the frame body 100. Thus, by providing two linkage transmission structures, sufficient thrust is ensured to counteract the pressure exerted on the frame body 100 by the rider, thereby increasing the stability of the frame body 100 and improving the reliability of the bicycle rear suspension frame structure 10.

[0036] Optionally, the bicycle rear suspension frame structure 10 also includes a drop catch 240 (not shown), with the end of the rear seat fork 210 away from the frame body 100 and the end of the rear chain fork 220 away from the shock absorber link 230 both fixedly connected to the drop catch 240. In this way, the drop catch 240 can hook onto the first axle of the rear wheel, ensuring that the rear wheel can drive the rear seat fork 210 and rear chain fork 220 to rotate. The rear chain fork 220 can then push the shock absorber 300 through the shock absorber link 230, improving the ease of assembly of the bicycle rear suspension frame structure 10.

[0037] Specifically, in this embodiment, the end of the upper rear fork 210 away from the frame body 100 and the end of the lower rear fork 220 away from the shock absorber link 230 are both welded and fixed to the pawl 240.

[0038] like Figure 1 As shown, in one embodiment, each of the two shock absorber links 230 has a sliding portion 231 at the end furthest from the shock absorber 300, and the ends of the two chainstays 220 furthest from the first pivot point are correspondingly slidably engaged with the two sliding portions 231. In this way, the chainstays 220 and the shock absorber links 230 can move relative to each other, ensuring that the chainstays 220 do not interfere with the shock absorber links 230 during riding, thus improving the reliability of the bicycle rear suspension frame structure 10.

[0039] Optionally, both sliding parts 231 are configured as sliding grooves. The bicycle rear suspension frame structure 10 also includes a sliding rod (not shown), which passes through the two sliding grooves and slidably engages with both grooves. Both ends of the sliding rod are correspondingly connected to the ends of the two chainstays 220 furthest from the first pivot. In this way, the chainstays 220 and the shock absorber linkage 230 can move relative to each other, ensuring that the chainstays 220 do not interfere with the shock absorber linkage 230 during riding, thus improving the reliability of the bicycle rear suspension frame structure 10.

[0040] Specifically, in this embodiment, the slide is provided along the extension direction of the shock absorber link 230.

[0041] like Figure 1 As shown, in one embodiment, the bicycle rear suspension frame structure 10 further includes a second pivot (not shown). The two ends of the second pivot are connected to the ends of the two shock absorber links 230 near the shock absorber 300. The shock absorber 300 has a first shaft hole (not shown) at the end near the shock absorber link 230, and the second pivot passes through the first shaft hole. Thus, the two shock absorber links 230 can push the shock absorber 300 through the second pivot, improving the reliability of the bicycle rear suspension frame structure 10.

[0042] like Figure 1 As shown, the frame body 100 further includes a downtube 120, which is provided with a second connecting seat 121. The second connecting seat 121 is rotatably connected to the end of the shock absorber 300 away from the shock absorber linkage 230. In this way, the shock absorber 300 can be connected to the downtube 120 through the second connecting seat 121, improving the ease of assembly of the bicycle rear suspension frame structure 10.

[0043] Specifically in this embodiment, the second connecting seat 121 is provided with a fourth shaft hole, and the shock absorber 300 is provided with a fifth rotating shaft at one end near the lower tube 120. The fifth rotating shaft passes through the fourth shaft hole and is rotatably engaged with the fourth shaft hole.

[0044] like Figure 1 Optionally, the frame body 100 also includes a top tube 130, a middle tube 140, and a head tube 150. One end of the top tube 130 is fixedly connected to one end of the bottom tube 120, and both ends of the top tube 130 and the bottom tube 120 are fixedly connected to the head tube 150. The other ends of the top tube 130 and the bottom tube 120 are fixedly connected to the middle tube 140. In this way, the top tube 130, the bottom tube 120, and the middle tube 140 can be connected to form a triangular structure, which increases the strength of the frame body 100 and improves the reliability of the bicycle rear suspension frame structure 10.

[0045] like Figure 1As shown, in one embodiment, the frame body 100 has a third connecting seat 141 on the side near the rear wheel. The third connecting seat 141 has a second axle hole (not shown). The bicycle rear suspension frame structure 10 also includes a third pivot (not shown), which passes through the second axle hole. The two ends of the third pivot are correspondingly connected to the ends of the two rear upper forks 210 away from the first pivot. In this way, the two rear upper forks 210, the two rear lower forks 220, and the two shock absorber links 230 can all maintain synchronous rotation, improving the reliability of the bicycle rear suspension frame structure 10.

[0046] In this specific embodiment, the third connecting seat 141 is disposed on the middle tube 140.

[0047] like Figure 1 As shown, in one embodiment, the frame body 100 is provided with a central shaft hole 110, the outer side wall of the central shaft hole 110 is provided with a first connecting seat 111, the shock absorber link 230 extends along the arc direction, and the side of the shock absorber link 230 near the central shaft hole 110 is provided with a connecting part 232, which is rotatably connected to the first connecting seat 111.

[0048] Specifically, in this embodiment, the frame body 100 is provided with a central axle hole 110, and the outer wall of the central axle hole 110 is provided with a first connecting seat 111. The first connecting seat 111 is provided with a third axle hole. The shock absorber connecting rod 230 extends along an arc direction, and each of the two shock absorber connecting rods 230 is provided with a connecting part 232 on the side near the central axle hole 110. The bicycle rear shock absorber frame structure 10 also includes a fourth pivot, which passes through the third axle hole, and both ends of the fourth pivot are correspondingly connected to the two connecting parts 232. This improves the ease of assembly of the bicycle rear shock absorber frame structure 10.

[0049] In this specific embodiment, the bicycle's bottom bracket passes through the bottom bracket hole 110, and the two pedals of the bicycle can be connected to the two ends of the bottom bracket via two cranks. The shock absorber linkage 230 is located above the bottom bracket.

[0050] like Figure 1 As shown, optionally, the outer wall of the connecting part 232 rolls into the outer wall of the bottom bracket hole 110. In this way, there is no interference between the frame body 100 and the shock absorber link 230, improving the reliability of the bicycle rear shock absorber frame structure 10.

[0051] In one embodiment, a full-suspension bicycle is provided, including the bicycle rear suspension frame structure 10 of any of the above embodiments.

[0052] In the above-described embodiment of the soft-tail bicycle, when a person sits on the bicycle, their weight presses down on the frame body 100, causing the frame body 100 to descend. However, compared to existing suspension frames, the shock-absorbing pivot point in this application is located at the connection between the rear upper fork 210 and the frame body 100, i.e., the shock-absorbing pivot point is moved upward. This increases the anti-squat value of the bicycle's rear suspension frame structure 10. Consequently, when riding, as the rider pedals, the chain drives the rear wheel downward. The rear wheel, through the cooperation of the rear upper fork 210 and rear lower fork 220, drives the shock-absorbing linkage 230 to rotate. The shock-absorbing linkage 230 pushes the shock absorber 300 to rebound, thereby causing the frame body 100 to rise. The upward and downward movements cancel each other out, ensuring that the frame body 100 remains stable during riding. The range of movement of the frame body 100 is reduced, the force unloading is reduced, and the riding efficiency is greatly improved. In addition, when riding on rough roads, the direction of the thrust of the shock absorber 300 by the shock absorber linkage 230 is different from the direction of the impact force of the frame body 100 on the shock absorber 300, which does not affect the shock absorption effect of the rear suspension frame structure 10 of the bicycle and improves the reliability of the soft-tail bicycle.

[0053] In other embodiments, the bicycle rear suspension frame structure 10 of this application can also be applied to Softail motorcycles, and its principle is the same as or similar to that of Softail bicycles, which will not be described in detail here.

[0054] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0055] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0057] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0059] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A bicycle rear suspension frame structure, characterized in that, include: The frame itself; The rear upper fork, one end of which is rotatably connected to the frame body; The rear lower fork, one end of which and the other end of the rear upper fork are both used to engage with the first pivot shaft of the rear wheel for transmission. The shock absorber link is located below the rear upper fork and is rotatably connected to the frame body. One end of the shock absorber link is movably connected to the other end of the rear lower fork. and The shock absorber has one end rotatably connected to the vehicle frame body and the other end rotatably connected to the other end of the shock absorber linkage. The frame body has a central shaft hole, and the outer wall of the central shaft hole has a first connecting seat. The shock absorber link extends along an arc direction, and the side of the shock absorber link near the central shaft hole has a connecting part. The connecting part is rotatably connected to the first connecting seat. The outer wall of the connecting part is in rolling engagement with the outer wall of the central shaft hole.

2. The bicycle rear suspension frame structure according to claim 1, characterized in that, The rear upper fork, the rear lower fork, and the shock absorber link are all provided in pairs, with the two rear upper forks, the two rear lower forks, and the two shock absorber links being respectively arranged on opposite sides of the frame body.

3. The bicycle rear suspension frame structure according to claim 2, characterized in that, Each of the two shock absorber linkages has a sliding part at the end away from the shock absorber, and the ends of the two rear lower forks away from the first pivot are slidably engaged with the two sliding parts.

4. The bicycle rear suspension frame structure according to claim 3, characterized in that, Both sliding parts are configured as sliding grooves. The bicycle rear suspension frame structure also includes a sliding rod, which passes through the two sliding grooves and slides in cooperation with both sliding grooves. The two ends of the sliding rod are connected to the ends of the two rear forks that are away from the first pivot.

5. The bicycle rear suspension frame structure according to claim 2, characterized in that, The bicycle rear suspension frame structure also includes a second pivot shaft, the two ends of which are connected to the ends of the two shock absorber links near the shock absorber. The end of the shock absorber near the shock absorber link is provided with a first shaft hole, and the second pivot shaft passes through the first shaft hole.

6. The bicycle rear suspension frame structure according to claim 5, characterized in that, The frame body includes a downtube, and the downtube is provided with a second connecting seat, which is rotatably connected to the end of the shock absorber away from the shock absorber link.

7. The bicycle rear suspension frame structure according to claim 2, characterized in that, The frame body has a third connecting seat on the side near the rear wheel, and the third connecting seat has a second axle hole. The bicycle rear suspension frame structure also includes a third pivot, which passes through the second axle hole, and the two ends of the third pivot are connected to the ends of the two rear upper forks away from the first pivot.

8. The bicycle rear suspension frame structure according to any one of claims 1 to 7, characterized in that, The bicycle rear suspension frame structure also includes a drop catch, and the end of the rear upper fork away from the frame body and the end of the rear lower fork away from the shock absorber link are both fixedly connected to the drop catch.

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