A bicycle high-ground soft tail suspension

Abstract

The utility model relates to the technical field of bicycle suspension systems, and discloses a bicycle high-ground soft-tail suspension, so that the installation position or angle of a rear shock absorber can be adjusted to meet the requirements of different riders for the progressiveness and compliance of a mountain bicycle body; the main scheme comprises: a front frame, a rear frame, a connecting piece and a shock absorber, the front frame comprises a seat tube and a front lower tube, a mounting seat is arranged on a side of the front lower tube close to the seat tube, a first mounting hole is opened on the mounting seat, the first mounting hole is an axisymmetric mounting hole, a mounting module matched with the mounting hole is arranged in the first mounting hole, and a second mounting hole is arranged on a side of the mounting module perpendicular to the symmetry axis of the first mounting hole; one end of the shock absorber is rotatably connected to a side of the connecting piece away from the rear frame, and the other end of the shock absorber is pivotally connected to the second mounting hole of the mounting module.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle suspension systems, in particular to a high-ground-close soft-tail suspension for a bicycle. Background Art

[0002] Bicycle suspension is an important part of the overall design of the bicycle, and plays a vital role in the comfort and performance of the bicycle. For common mountain bikes, they are roughly divided into hard-tail mountain bikes and soft-tail mountain bikes. Among them, the suspension of hard-tail mountain bikes is an integrated shape and has no rear shock absorber, while the suspension of soft-tail mountain bikes is a multi-link structure, and a pivot point is set on the frame to enable the rear end of the bicycle to move up and down to achieve better shock absorption effect.

[0003] Regarding the characteristics of the suspension structure of soft-tail mountain bikes, although the connecting rod structure and the setting of the rear shock absorber can effectively absorb the impact caused by bumpy roads, there are still the following problems:

[0004] The existing suspension structure cannot adjust the position or angle of the rear shock absorber, and the progressiveness and compliance of the vehicle body are closely related to the installation position of the rear shock absorber. Therefore, the existing suspension structure cannot meet the progressiveness and compliance requirements of different drivers and has poor versatility. Utility Model Content

[0005] 1. Technical Problems Solved

[0006] In view of the deficiencies in the prior art, the utility model proposes a bicycle high-ground-close soft tail suspension, which can adjust the installation position or angle of the rear shock absorber to meet the requirements of different riders for the progressiveness and compliance of the mountain bicycle body.

[0007] 2. Specific technical solutions

[0008] A bicycle high-ground-close soft-tail suspension comprises a front frame, a rear frame, a connecting member and a shock absorber, wherein the front frame comprises a seat tube and a front lower tube, the middle part of the connecting member is rotatably connected to the middle and upper side of the seat tube, the upper end of the rear frame is rotatably connected to an end of the connecting member close to the rear frame, the lower end of the rear frame is rotatably connected to the lower side of the seat tube, a mounting seat is provided on a side of the front lower tube close to the seat tube, a first mounting hole is provided on the mounting seat, the first mounting hole is an axisymmetric mounting hole, a mounting module matching the mounting hole is provided in the first mounting hole, and a second mounting hole is provided on one side of the mounting module; one end of the shock absorber is rotatably connected to a side of the connecting member away from the rear frame, and the other end of the shock absorber is pivotally connected to the second mounting hole.

[0009] Implementation principle and working principle:

[0010] When installing the shock absorber of the existing soft tail suspension, the two ends of the shock absorber are respectively hinged to the upper and lower sides or the left and right sides of the front frame. When encountering a bumpy road, the force is transmitted to the shock absorber through the connecting rod of the rear frame, and the shock absorption is achieved through the buffering of the shock absorber. However, since the shock absorber position of the shock absorber is fixed and the movement trajectory of the rear frame is fixed, the progressiveness and compliance of the vehicle body remain constant, which cannot meet the progressiveness and compliance requirements of different drivers;

[0011] The difference of this scheme is that when the shock absorber is installed, one end of the shock absorber is pivoted to the connecting piece, and the other end is pivoted to the mounting seat of the front lower tube, wherein when the shock absorber is installed on the mounting seat, the mounting module is first installed on the first mounting hole of the mounting seat, and then one end of the shock absorber is pivotally mounted at the second mounting hole, thereby completing the installation of the shock absorber and the mounting module; wherein the second mounting hole is located on one side of the mounting module, and when it is necessary to change the mounting position or angle of the shock absorber, it is only necessary to install the mounting module upside down or change the mounting direction of the mounting module; in summary, this scheme changes the progressiveness and compliance of the vehicle body by changing the mounting angle or mounting position of one end of the shock absorber, thereby meeting the progressiveness and compliance requirements of different drivers, wherein when the shock absorber is close to the front end of the suspension at the mounting seat end, the progressiveness is lower and the compliance is higher during the compression process of the suspension, and when the suspension is at the rear position, the suspension has greater progressiveness during compression and has high anti-bottoming ability.

[0012] Preferably, the first mounting hole is an oblong hole; there are two groups of mounting modules, which are symmetrically arranged on both sides of the longitudinal section of the seat tube; and one side of the mounting module close to the mounting seat shrinks inward to cooperate with the first mounting hole.

[0013] In this preferred embodiment, the first mounting hole is an oblong hole, which is easier to process than other holes, is evenly stressed during use, is not easily worn, and has a longer service life; the mounting module is retracted on one side that cooperates with the mounting seat to form a step structure, which facilitates the installation and fixation of the mounting module.

[0014] Preferably, the second mounting hole is arranged on one side in the length direction of the first mounting hole.

[0015] Preferably, there are two groups of connecting members, which are symmetrically arranged on both sides of the longitudinal section of the seat tube, and the opposite sides of the two groups of connecting members are connected by a hard hollow tube.

[0016] In this preferred embodiment, the rear frame and the front frame are connected by a connecting piece, and the connection of the connecting piece is completed by a hard hollow tube, which improves the mechanical properties of the connecting piece and increases the stability of the connection between the rear frame and the front frame. The hard hollow tube can also improve the mechanical properties while reducing the impact on the vehicle body weight.

[0017] Preferably, the rear frame comprises a seat fork and a chain fork, the seat fork comprises an upper fork tube symmetrically arranged along the longitudinal section of the seat tube, an upper connecting tube is arranged between the upper fork tubes, and the upper connecting tube is arranged on one side close to the seat tube and parallel to the hard hollow tube.

[0018] In this preferred embodiment, the setting of the upper connecting tube effectively improves the stability between the upper fork tubes, improves the strength, and is set in parallel with the hard hollow tube, so that the consistency of the suspension is better.

[0019] Preferably, one end of the upper fork tube is pivotally connected to a side of the corresponding side connecting member close to the rear frame, and the other end of the upper fork tube is folded toward the side where the front frame is located to form a connecting portion, and the connecting portion is pivotally connected to the rear lower fork.

[0020] Preferably, the rear chain fork comprises two symmetrically arranged lower fork tubes, the symmetry axis of the lower fork tubes coincides with the symmetry axis of the upper fork tube, one end of the lower fork tube is pivotally connected to the connecting portion, the other end of the lower fork tube is folded and pivotally connected to the seat tube, and the folded position of the lower fork tube is lower than the pivotal position of the lower fork tube and the seat tube.

[0021] Preferably, the angle formed by the upper fork tube after folding is 45°-50°; the angle formed by the lower fork tube after folding is 130°-135°; this angle setting makes it easier to transfer the impact to the shock absorbing end for buffering, and the shock absorbing effect is better. At the same time, the frame is not easily compressed, and the handling is better.

[0022] Preferably, a lower connecting tube is provided between the lower fork tubes, and the lower connecting tube is provided on a side close to the seat tube and parallel to the upper connecting tube.

[0023] In this preferred embodiment: when designing the rear frame, the folding setting of the lower fork tube of the rear chain fork and the folding setting of the upper fork tube are arranged, and then the lower fork tube and the upper fork tube are connected, and the angle setting of the folding of the lower fork tube and the upper fork tube is set, so that the anti-squat value in the initial and middle travel is controlled to a higher level (more than 120%), and when the bicycle is vigorously pedaled in a standing position, the force loss caused by the suspension compression is avoided to the greatest extent, thereby ensuring the pedaling efficiency.

[0024] The beneficial effects of the utility model are:

[0025] This solution can change the installation position or installation angle of the shock absorber on the frame by setting the mounting seat and the mounting module, and then change the mechanical transmission of the soft tail suspension when it is bumped, so that only one frame and one shock absorber can be used to change the compliance and progressiveness, which is low-cost and highly practical. The connection position and angle setting between the lower fork tube of the rear chain fork and the upper fork tube of the rear seat fork can avoid a large compression of the suspension when the bicycle is vigorously rocked and pedaled in a standing position, thereby ensuring a high rocking and pedaling efficiency. The overall strength of the suspension can be effectively improved by setting the hard hollow connecting tube, the upper connecting tube and the lower connecting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the soft tail suspension of the utility model.

[0027] Figure 2 It is a schematic diagram of the front frame structure of the utility model.

[0028] Figure 3 This is a schematic diagram of the installation module structure of the utility model.

[0029] Figure 4 It is a partial schematic diagram of part A of the utility model.

[0030] Figure 5 It is a schematic diagram of the connection structure between the connecting piece and the rear frame of the utility model.

[0031] Explanation of the reference numerals: front frame 10, seat tube 11, lower front tube 12, mounting seat 13, first mounting hole 14, mounting module 15, second mounting hole 16; rear frame 20, upper fork 21, rear chain fork 22, upper fork tube 210, upper connecting tube 211, connecting portion 212, lower fork tube 220, lower connecting tube 221; connecting piece 30, hard hollow tube 31, shock absorber 40. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the protection scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1-Figure 5 As shown:

[0034] like Figure 1 , Figure 2 and Figure 5A bicycle high-ground-low soft-tail suspension comprises a front frame 10 and a rear frame 20 on both sides, and a connecting member 30 and a shock absorber 40 between the two. The front frame 10 is triangular in shape as a whole, and a seat tube 11 and a front down tube 12 are respectively disposed on the left side and the lower side of the front frame 10.

[0035] Specifically, Figure 2 A pivot seat is welded to the middle upper section of the seat tube 11 of the front frame 10, wherein the middle portion of the connecting member 30 is pivotally connected to the pivot seat of the seat tube 11, and the left side of the connecting member 30 is pivotally connected to the upper right end of the rear frame 20. Figure 1 , the lower right end of the rear frame 20 is pivotally connected to the bottom of the seat tube 11; wherein the shock absorber 40 is installed in the front frame 10, specifically, the upper end of the shock absorber 40 is pivotally connected to the right side of the connecting member 30, and the lower end of the shock absorber 40 is pivotally connected to the left side of the front lower tube 12; when implemented, as Figure 2 and Figure 3 A mounting seat 13 is welded or integrally formed at the connection position between the front lower tube 12 and the shock absorber 40, wherein a first mounting hole 14 is opened at the upper end of the mounting seat 13, wherein the first mounting hole 14 is an axisymmetric mounting hole, and a mounting module 15 matched with the first mounting hole 14 is arranged in the first mounting hole 14, specifically, the first mounting hole 14 and the mounting module 15 are interference fit; Figure 3 A second mounting hole 16 is opened on either side of the mounting module 15 . Specifically, the lower end of the shock absorber 40 is pivotally connected to the second mounting hole 16 of the mounting seat 13 .

[0036] Working principle: When adjusting the position or angle of the shock absorber 40, it is only necessary to separate the lower end of the shock absorber 40 from the mounting module 15, and then change the mounting direction of the mounting module 15 at the first mounting hole 14, so that the mounting angle on the front frame 10 can be changed, thereby achieving compliance and gradual changes.

[0037] In this solution, by setting the mounting seat 13 and the mounting module 15, the mounting position or the mounting angle of the shock absorber 40 on the frame can be changed, thereby changing the mechanical conduction of the soft tail suspension when it is bumped, thereby achieving the change of compliance and progressiveness with only one frame, which is highly practical.

[0038] When implementing, Figure 2 and Figure 3The first mounting hole 14 is an oblong hole, which can be processed by milling and other processing methods, with low manufacturing difficulty. The oblong hole is evenly stressed during use, not easy to wear, and more durable. Specifically, the mounting module 15 shrinks inwardly in a step-like shape on the side that cooperates with the first mounting hole 14, which is conducive to the installation and fixation of the mounting module 15. During implementation, the second mounting hole 16 is opened at either end of the length direction of the oblong hole. When it is necessary to adjust the installation position or installation angle of the shock absorber 40, only the direction of the mounting module 15 needs to be adjusted, and the operation is simple.

[0039] When implementing, Figure 4 There are two groups of connecting members 30, and the two groups of connecting members 30 are symmetrically arranged on both sides of the longitudinal section of the seat tube 11, and a hard hollow tube 31 is connected between the two groups of connecting members 30. Specifically, the hard hollow tube 31 can be integrally formed with the two groups of connecting members 30 or connected by welding or the like; in this way, after the connecting members 30 are connected to the rear frame 20 and other components, the two groups of pivotally connected shafts and the hard hollow tube 31 work together to make the strength of the soft tail suspension better.

[0040] When implementing, Figure 5 , the rear frame 20 includes a rear seat fork 21 and a rear chain fork 22, wherein the rear seat fork 21 includes two upper fork tubes 210, the two upper fork tubes 210 are symmetrically arranged on both sides of the longitudinal section of the seat tube 11, and the right end of the specific upper fork tube 210 is bolted to the left side of the corresponding connecting member 30; during implementation, in order to improve the structural strength of the rear seat fork 21, an upper connecting tube 211 is welded between the two upper fork tubes 210, and the upper connecting tube 211 is located on the right side of the upper fork tube 210 and is parallel to the hard hollow tube 31; during implementation, the left end of the upper fork tube 210 is folded toward the lower right side to form a connecting portion 212, wherein the folding angle is 45°-50°, specifically 46° in this embodiment, wherein the folding portion is pivotally connected to the left end of the rear chain fork 22;

[0041] During implementation, the rear chain stay 22 also includes two lower fork tubes 220, which are symmetrically arranged on both sides of the longitudinal section of the seat tube 11, wherein the left side of the lower fork tube 220 is pivotally connected to the connecting portion 212 of the upper fork tube 210, and the right side of the upper fork tube 210 is pivotally connected to the seat tube 11 after being folded upward, and the folding angle of the upper fork tube 210 is 130°-135°. In order to improve the structural strength of the rear chain stay 22, a lower connecting tube 221 is welded between the two lower fork tubes 220, wherein the lower connecting tube 22 1 is also parallel to the upper connecting tube 211, so that the consistency of the suspension can be ensured; the folding setting of the lower fork tube 220 of the rear chain stay 22 and the folding setting of the upper fork tube 210, and then connecting the lower fork tube 220 and the upper fork tube 210, and the folding angle setting of the lower fork tube 220 and the upper fork tube 210, control the anti-squat value in the initial and middle travel to a higher level (more than 120%), when the bicycle is vigorously rocked and pedaled in a standing position, the suspension compression is avoided to the greatest extent to cause the loss of force, and the pedaling efficiency is ensured.

[0042] It is worth noting that, as a common connection method, the structure and matching method of the pivot connection are well known to those skilled in the art, and will not be described in detail here.

[0043] In this solution, one end of the shock absorber 40 is installed on the mounting module 15. When the mounting position or mounting angle of the shock absorber 40 needs to be changed, it is only necessary to invert the mounting module 15. When the mounting angle of the shock absorber 40 is changed, the force transmission of the soft tail suspension is also changed, thereby achieving gradual and compliant changes in the vehicle body. The same frame can achieve compliance and gradual changes, and the function is powerful. The special setting of the connection position of the rear frame 20, the upper fork tube 210 and the lower fork tube 220 effectively avoids a large compression of the suspension, thereby ensuring a higher rocking and pedaling efficiency.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention shall be defined by the appended claims.

Claims

1. A bicycle high-ground-close soft-tail suspension, comprising a front frame (10), a rear frame (20), a connecting piece (30) and a shock absorber (40), wherein the front frame (10) comprises a seat tube (11) and a front lower tube (12), the middle portion of the connecting piece (30) is rotatably connected to the middle upper side of the seat tube (11); the upper end of the rear frame (20) is rotatably connected to an end of the connecting piece (30) close to the rear frame (20), and the lower end of the rear frame (20) is rotatably connected to the lower side of the seat tube (11); the characteristics are: A mounting seat (13) is provided on a side of the front lower tube (12) close to the seat tube (11); a first mounting hole (14) is provided on the mounting seat (13); the first mounting hole (14) is an axisymmetric mounting hole; a mounting module (15) matching the first mounting hole (14) is provided in the first mounting hole (14); a second mounting hole (16) is provided on one side of the mounting module (15); one end of the shock absorber (40) is rotatably connected to a side of the connecting member (30) away from the rear frame (20); and the other end of the shock absorber (40) is pivotally connected to the second mounting hole (16).

2. The bicycle high-ground-close soft-tail suspension according to claim 1, characterized in that: The first mounting hole (14) is an oblong hole; the mounting modules (15) have two groups and are symmetrically arranged on both sides of the longitudinal section of the seat tube (11); the mounting modules (15) are contracted inwardly on a side close to the mounting seat (13) and cooperate with the first mounting hole (14).

3. The bicycle high-ground-close soft-tail suspension according to claim 1, characterized in that: The second mounting hole (16) is arranged on one side of the first mounting hole (14) in the length direction.

4. The bicycle high-ground-close soft-tail suspension according to claim 1, characterized in that: There are two groups of connecting members (30) which are symmetrically arranged on both sides of the longitudinal section of the seat tube (11), and the two groups of connecting members (30) are connected on opposite sides via a hard hollow tube (31).

5. The bicycle high-ground-close soft-tail suspension according to claim 1, characterized in that: The rear frame (20) comprises a rear upper fork (21) and a rear lower fork (22); the rear upper fork (21) comprises an upper fork tube (210) symmetrically arranged along the longitudinal section of the seat tube (11); an upper connecting tube (211) is arranged between the upper fork tubes (210); the upper connecting tube (211) is arranged on a side close to the seat tube (11) and is parallel to the hard hollow tube (31).

6. The bicycle high-ground-close soft-tail suspension according to claim 5, characterized in that: One end of the upper fork tube (210) is pivotally connected to a side of the corresponding side connecting member (30) close to the rear frame (20), and the other end of the upper fork tube (210) is folded toward the side where the front frame (10) is located to form a connecting portion (212), and the connecting portion (212) is pivotally connected to the rear lower fork (22).

7. The bicycle high-ground-close soft-tail suspension according to claim 6, characterized in that: The folding angle of the upper fork tube (210) is 40°-45°.

8. The bicycle high-ground-close soft-tail suspension according to claim 6, characterized in that: The rear lower fork (22) comprises two symmetrically arranged lower fork tubes (220), wherein the symmetry axis of the lower fork tubes (220) is consistent with the symmetry axis of the upper fork tube (210), one end of the lower fork tube (220) is pivotally connected to the connecting portion (212), and the other end of the lower fork tube (220) is pivotally connected to the seat tube (11) after being folded, and the folded position of the lower fork tube (220) is lower than the pivotal position of the lower fork tube (220) and the seat tube (11).

9. The bicycle high-ground-close soft-tail suspension according to claim 8, characterized in that: The folding angle of the lower fork tube (220) is 130°-135°.

10. The bicycle high-ground-close soft-tail suspension according to claim 8, characterized in that: A lower connecting tube (221) is provided between the lower fork tubes (220); the lower connecting tube (221) is provided on a side close to the seat tube (11) and is parallel to the upper connecting tube (211).

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