Four-connecting-rod damping mechanism and bicycle

Abstract

The utility model provides a four-connecting-rod damping mechanism and a bicycle, and relates to the technical field of vehicles, the four-connecting-rod damping mechanism comprises a middle tube fixing seat, an upper fork, a lower fork, a connecting piece, a lower connecting block and a damper; one end of the upper fork is rotationally connected with the connecting piece, the other end of the upper fork is connected with one end of the lower fork, and the other end of the lower fork is rotationally connected with the lower connecting block; the connecting piece and the lower connecting block are both rotationally connected with the middle pipe fixing base and the shock absorber at the same time. The middle pipe fixing seat is provided with an assembling through hole, and the shock absorber is arranged in the assembling through hole in a penetrating mode. The four-connecting-rod damping mechanism is compact in structure, small in size, small in occupied space and beneficial to assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of transportation tools, in particular to a four-link shock absorbing mechanism and a bicycle. Background Art

[0002] Bicycles are a widely used means of transportation for modern people, offering advantages such as being energy-efficient, convenient, and fast. With the increase in road traffic, people are increasingly choosing bicycles for short distances, as they provide both exercise and energy conservation. As bicycle use expands, not only in urban areas but also in complex environments like mountainous terrain, the performance requirements for bicycles are becoming increasingly demanding, and some bicycles are now equipped with shock absorption systems.

[0003] The inventors discovered during their research that bicycles equipped with a shock absorption system in the prior art have at least the following disadvantages:

[0004] The shock absorber is completely exposed outside the frame and is not tightly integrated with the frame, which makes the overall volume large and is not conducive to vehicle design. Utility Model Content

[0005] The purpose of the present application is to provide a four-link shock absorbing mechanism and a bicycle to solve the technical problem of poor tightness between the shock absorber and the frame in the prior art.

[0006] In a first aspect, the utility model provides a four-bar linkage shock absorbing mechanism, comprising:

[0007] A middle tube fixing seat, an upper fork, a lower fork, a connecting plate, a lower connecting block and a shock absorber; one end of the upper fork is rotatably connected to the connecting plate, the other end of the upper fork is connected to one end of the lower fork, and the other end of the lower fork is rotatably connected to the lower connecting block; the connecting plate and the lower connecting block are both rotatably connected to the middle tube fixing seat and the shock absorber at the same time; the middle tube fixing seat is provided with an assembly through hole, and the shock absorber is passed through the assembly through hole.

[0008] In an optional embodiment, the center tube fixing seat includes a connecting column and a connecting shell of an integrated structure, and the assembly through hole is provided on the connecting shell; the connecting column is snapped into the connecting piece and rotatably cooperates with the connecting piece.

[0009] Based on the above solution, the connecting column and the connecting piece are rotatably matched, and the connecting shell and the lower connecting block are rotatably matched, which makes installation convenient.

[0010] In an optional embodiment, the lower connecting block is snap-fitted into the connecting shell and rotatably engaged with the connecting shell.

[0011] Based on the above solution, the lower connecting block is clamped in the connecting shell, and part of the lower connecting block is located inside the connecting shell, which rationally utilizes the internal space of the connecting shell, making the structure of the lower connecting block and the connecting shell compact and the overall volume small.

[0012] In an optional embodiment, an anti-deformation groove is provided on the outer surface of the connecting shell.

[0013] Based on the above solution, by providing the anti-deformation groove, the structural strength of the local position of the connecting shell can be improved, the connecting shell is not easily deformed during use, and has a long service life.

[0014] In an optional embodiment, the connecting piece includes a connecting strip of an integral structure and two lateral hollow frames, the connecting strip is located between the two lateral hollow frames; the connecting column is located between the two lateral hollow frames and is rotatably engaged with the two lateral hollow frames at the same time.

[0015] Based on the above solution, the connecting piece is configured as a one-piece structure, which is easy to manufacture and low in cost. It also has high overall structural strength and a long service life. Compared with the traditional split structure, the one-piece connecting piece eliminates assembly steps, saves assembly time, improves assembly efficiency, reduces assembly errors and manufacturing errors, and improves assembly quality.

[0016] In an optional embodiment, two groups of mounting units are provided on the upper fork, and each group of the mounting units includes two mounting lugs arranged at intervals; the two lateral hollow frames are respectively cooperated with the two groups of the mounting units, and each of the lateral hollow frames is clamped between the two mounting lugs of the same group and is rotatably connected to the two mounting lugs.

[0017] Based on the above solution, each lateral hollow frame is clamped and positioned by two mounting lugs of the same group, and the installation position of the lateral hollow frame is accurate and reliable, with high assembly efficiency and high assembly quality.

[0018] In an optional embodiment, the lower connecting block includes a connecting plate of an integral structure and two lateral hollow plates, and the opposite sides of the connecting plate are simultaneously connected to the two lateral hollow plates; the shock absorber is inserted between the two lateral hollow plates and rotatably cooperates with the two lateral hollow plates.

[0019] Based on the above solution, the lower connecting block is set as an integrated structure with high structural strength and long service life.

[0020] In an optional embodiment, the hinge position between the connecting plate and the upper fork and the hinge position between the connecting plate and the shock absorber are located on both sides of the middle tube fixing seat.

[0021] Based on the above solution, when the connecting plate, upper fork, shock absorber and center tube fixing seat cooperate with each other, multiple hinge positions are distributed near the center tube fixing seat, which is convenient for installation, reduces the difficulty of frame design, and reduces manufacturing costs.

[0022] In an optional embodiment, the hinge position between the lower connecting block and the lower fork and the hinge position between the lower connecting block and the shock absorber are located on a side of the center tube fixing seat close to the rear wheel of the bicycle.

[0023] Based on the above solution, when the lower connecting block, lower fork, shock absorber and center tube fixing seat cooperate with each other, multiple hinge positions are distributed near the center tube fixing seat, which is conducive to installation, reduces the difficulty of frame design, and reduces manufacturing costs.

[0024] In a second aspect, the present invention provides a bicycle comprising the four-bar linkage shock absorbing mechanism according to any one of the aforementioned embodiments.

[0025] Compared with the prior art, the beneficial effects of the present invention include, for example:

[0026] In summary, the four-bar linkage shock absorber mechanism provided in this embodiment utilizes an assembly through-hole provided on the center tube mounting base. During installation, the shock absorber is inserted into the assembly through-hole, and at least a portion of the shock absorber is obscured by the center tube mounting base. This design creates a concealed design for the shock absorber, tightly integrated with the center tube mounting base. The overall structure is compact, small, and aesthetically pleasing. Furthermore, the partial obscuration of the shock absorber by the center tube mounting base protects the shock absorber, reduces the likelihood of deformation from collisions, and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic structural diagram of a four-bar linkage shock absorbing mechanism provided in an embodiment of the present utility model;

[0029] Figure 2 A schematic structural diagram of a middle tube fixing seat provided in an embodiment of the present utility model;

[0030] Figure 3 A schematic structural diagram of a connecting piece provided in an embodiment of the present utility model;

[0031] Figure 4This is a structural schematic diagram of the lower connecting block provided in an embodiment of the utility model.

[0032] Reference numerals:

[0033] 100-middle tube fixing seat; 110-connecting column; 120-connecting shell; 121-assembly through hole; 122-anti-deformation groove; 130-fastening screw; 200-upper fork; 210-mounting lug; 300-lower fork; 400-connecting piece; 410-connecting strip; 420-lateral hollow frame; 500-lower connecting block; 510-connecting plate; 520-lateral hollow plate; 600-shock absorber. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0035] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0036] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] Refer to the following Figures 1 to 4 A four-bar linkage shock absorbing mechanism and a bicycle including the same according to some embodiments of the present invention are described.

[0040] See also Figures 1 to 4 As shown, the present application provides a four-bar linkage shock absorber mechanism, which includes a middle tube fixing seat 100, an upper fork 200, a lower fork 300, a connecting plate 400, a lower connecting block 500 and a shock absorber 600; one end of the upper fork 200 is rotatably connected to the connecting plate 400, the other end of the upper fork 200 is connected to one end of the lower fork 300, and the other end of the lower fork 300 is rotatably connected to the lower connecting block 500; the connecting plate 400 and the lower connecting block 500 are both rotatably connected to the middle tube fixing seat 100 and the shock absorber 600 at the same time; the middle tube fixing seat 100 is provided with an assembly through hole 121, and the shock absorber 600 is passed through the assembly through hole 121.

[0041] Based on the above, the four-bar linkage shock absorbing mechanism provided in this embodiment works as follows:

[0042] The four-bar linkage shock-absorbing mechanism is primarily suitable for bicycles, particularly mountain bikes. When encountering bumps during riding, the rear wheel is lifted, simultaneously driving the lower fork 300 upward. This means that when both the wheel and the lower fork 300 move upward, the shock force is transmitted to the shock absorber 600 via the connecting piece 400. The connecting piece 400 presses down on the shock absorber 600, thereby absorbing energy through the shock absorber 600, thereby providing a buffering and shock-absorbing effect and improving riding comfort and safety. It should be understood that due to the provision of the assembly through-hole 121 on the center tube mounting base 100, the shock absorber 600 is inserted into the assembly through-hole 121 during installation, and at least a portion of the shock absorber 600 is obscured by the center tube mounting base 100. This means that the shock absorber 600 is concealed by the center tube mounting base 100, tightly integrated with the center tube mounting base 100, resulting in a compact overall structure, a small size, and a more aesthetically pleasing appearance. In addition, the shock absorber 600 is partially shielded by the middle tube fixing seat 100 , and the middle tube fixing seat 100 protects the shock absorber 600 , reduces the probability of the shock absorber 600 being deformed by collision, and prolongs the service life of the shock absorber 600 .

[0043] The following embodiments illustrate the details of the four-bar linkage shock absorbing mechanism provided in this application by way of examples.

[0044] Please combine Figure 1In this embodiment, the optional four-bar linkage shock absorber mechanism includes a center tube mounting base 100, an upper fork 200, a lower fork 300, a connecting plate 400, a lower connecting block 500, and a shock absorber 600. One end of the upper fork 200 is rotatably connected to the connecting plate 400, the other end of the upper fork 200 is connected to one end of the lower fork 300, and the other end of the lower fork 300 is rotatably connected to the lower connecting block 500. The connecting plate 400 and the lower connecting block 500 are both rotatably connected to the center tube mounting base 100 and the shock absorber 600. The center tube mounting base 100 is provided with an assembly through-hole 121, and the shock absorber 600 is disposed within the assembly through-hole 121.

[0045] Please combine Figure 2 Optionally, the middle tube fixing seat 100 includes a connecting column 110 and a connecting shell 120 of an integrated structure. The connecting column 110 is provided at one end of the connecting shell 120. The connecting column 110 is a cylinder, which is convenient for molding and demolding. An assembly through-hole 121 is provided on the connecting shell 120. The connecting column 110 is snapped into the connecting piece 400 and rotatably cooperates with the connecting piece 400. For example, a through-hole is provided in the middle of the connecting column 110, and a rotating shaft is passed through the through-hole, and both ends of the rotating shaft are rotatably cooperated with the connecting piece 400. In order to provide stability of the rotating shaft position and prevent loosening, two fastening screws 130 are threaded on the connecting column 110, and the ends of the fastening screws 130 abut against the rotating shaft. It should be noted that the fastening bolts 130 can be machine screws.

[0046] It should be understood that the middle tube fixing seat 100 can be made of metal material, which has high structural strength, is not easy to deform, and is safe and reliable to use.

[0047] Furthermore, an anti-deformation groove 122 is provided on the outer surface of the connection shell 120. The number of the anti-deformation grooves can be multiple and distributed at multiple positions of the connection shell 120 to improve the structural strength of the connection shell 120. The anti-deformation groove 122 can be set as a triangular groove, etc., to further improve the structural strength.

[0048] Please combine Figure 1 In this embodiment, two sets of mounting units are optionally provided on one side of the upper fork 200. Each set of mounting units includes two spaced-apart mounting lugs 210. Each mounting lug 210 is provided with a through-hole, and the four through-holes on the four mounting lugs 210 are coaxially arranged. Two lateral hollow frames 420 respectively cooperate with the two sets of mounting units. Each lateral hollow frame 420 is clamped between the two mounting lugs 210 of the same set and is rotatably connected to the two mounting lugs 210. In other words, a rotating shaft is installed in the through-holes of the two paired mounting lugs 210, and the lateral hollow frame 420 is connected to the corresponding rotating shaft.

[0049] Please combine Figure 1 and Figure 3In this embodiment, the connecting piece 400 optionally includes a connecting strip 410 and two lateral hollow frames 420 of an integrated structure, with the connecting strip 410 located between the two lateral hollow frames 420. The connecting column 110 is located between the two lateral hollow frames 420 and is rotatably engaged with the two lateral hollow frames 420. It should be noted that the connecting piece 400, through the design of the two lateral hollow frames 420, can provide installation space for the center tube fixing seat 100 and the shock absorber 600. In addition, the two lateral hollow frames 420 and the connecting strip 410 form an integrated structure, which has high structural strength and reduces assembly and manufacturing errors.

[0050] It should be understood that the number of hollow positions on each lateral hollow frame 420 can be set as needed, which can reduce consumables and reduce costs while ensuring strength. In addition, the shape of the hollow area on the lateral hollow frame 420 can be square, triangular, etc., which can be set as needed.

[0051] Please combine Figure 1 and Figure 4 In this embodiment, optionally, the lower connecting block 500 includes a connecting plate 510 and two lateral hollow plates 520 of an integrated structure, and the opposite sides of the connecting plate 510 are simultaneously connected to the two lateral hollow plates 520. The shock absorber 600 is inserted between the two lateral hollow plates 520 and rotatably cooperates with the two lateral hollow plates. In addition, one side of the connecting plate 510 is inserted into the connecting shell 120, and the connecting plate 510 is rotatably connected to the connecting shell 120; the other side of the connecting plate 510 is rotatably connected to the lower fork 300. With this design, part of the lower connecting block 500 is located in the connecting shell 120, and the lower connecting block 500 is tightly combined with the connecting shell 120, and the overall structure is compact and small in size.

[0052] It should be noted that when the four-bar linkage shock absorber mechanism is assembled, the hinge points between the connecting piece 400 and the upper fork 200, as well as the hinge points between the connecting piece 400 and the shock absorber 600, are located on both sides of the center tube mount 100. The hinge points between the lower connecting block 500 and the lower fork 300, as well as the hinge points between the lower connecting block 500 and the shock absorber 600, are located on the side of the center tube mount 100 closest to the bicycle's rear wheel. When the connecting piece 400, upper fork 200, lower connecting block 500, lower fork 300, shock absorber 600, and center tube mount 100 are interlocked, multiple hinge points are distributed near the center tube mount 100, facilitating installation, reducing frame design complexity, and lowering manufacturing costs.

[0053] The four-bar linkage shock absorbing mechanism provided in this embodiment has at least the following advantages:

[0054] 1. The shock absorber runs through the center pipe fixing seat 100, semi-hiding part of the shock absorber structure, making the overall structure more beautiful and compact;

[0055] 2. The multiple hinge positions of the four-link are concentrated near the center tube fixing seat 100, which reduces the difficulty of frame manufacturing, reduces manufacturing costs, and facilitates the design of diversified models;

[0056] 3. The components of the four-link shock absorber mechanism are designed as an integrated whole, which improves the overall stability of the frame and enhances riding safety.

[0057] The present application also provides a bicycle including the four-bar linkage shock absorbing mechanism of the above embodiment. Since the bicycle includes the four-bar linkage shock absorbing mechanism, it has all the beneficial effects of the four-bar linkage shock absorbing mechanism, which will not be described in detail here.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A four-bar linkage shock absorbing mechanism, characterized in that: include: A middle tube fixing seat (100), an upper fork (200), a lower fork (300), a connecting piece (400), a lower connecting block (500) and a shock absorber (600); one end of the upper fork (200) is rotatably connected to the connecting piece (400), the other end of the upper fork (200) is connected to one end of the lower fork (300), and the other end of the lower fork (300) is rotatably connected to the lower connecting block (500); the connecting piece (400) and the lower connecting block (500) are both rotatably connected to the middle tube fixing seat (100) and the shock absorber (600) at the same time; the middle tube fixing seat (100) is provided with an assembly through hole (121), and the shock absorber (600) is inserted into the assembly through hole (121).

2. The four-bar linkage shock absorbing mechanism according to claim 1, characterized in that: The center tube fixing seat (100) comprises a connecting column (110) and a connecting shell (120) of an integrated structure, wherein the assembly through hole (121) is provided on the connecting shell (120); the connecting column (110) is snap-fitted into the connecting piece (400) and rotatably matched with the connecting piece (400).

3. The four-bar linkage shock absorbing mechanism according to claim 2, characterized in that: The lower connecting block (500) is snap-fitted into the connecting shell (120) and rotatably matched with the connecting shell (120).

4. The four-bar linkage shock absorbing mechanism according to claim 2, characterized in that: An anti-deformation groove (122) is provided on the outer surface of the connection shell (120).

5. The four-bar linkage shock absorbing mechanism according to claim 2, characterized in that: The connecting piece (400) comprises a connecting strip (410) of an integral structure and two lateral hollow frames (420), wherein the connecting strip (410) is located between the two lateral hollow frames (420); and the connecting column (110) is located between the two lateral hollow frames (420) and is rotatably matched with the two lateral hollow frames (420).

6. The four-bar linkage shock absorbing mechanism according to claim 5, characterized in that: Two groups of mounting units are provided on the upper fork (200), and each group of the mounting units includes two mounting lugs (210) arranged at intervals; the two lateral hollow frames (420) are respectively matched with the two groups of the mounting units, and each of the lateral hollow frames (420) is clamped between the two mounting lugs (210) of the same group and is rotatably connected to the two mounting lugs (210).

7. The four-bar linkage shock absorbing mechanism according to claim 1, characterized in that: The lower connecting block (500) comprises a connecting plate (510) of an integral structure and two lateral hollow plates (520), wherein opposite sides of the connecting plate (510) are simultaneously connected to the two lateral hollow plates (520); the shock absorber (600) is inserted between the two lateral hollow plates (520) and rotatably cooperates with the two lateral hollow plates.

8. The four-bar linkage shock absorbing mechanism according to claim 1, characterized in that: The hinged position between the connecting piece (400) and the upper fork (200) and the hinged position between the connecting piece (400) and the shock absorber (600) are located on both sides of the middle tube fixing seat (100).

9. The four-bar linkage shock absorbing mechanism according to claim 1, characterized in that: The hinged position between the lower connecting block (500) and the lower fork (300) and the hinged position between the lower connecting block (500) and the shock absorber (600) are located on a side of the middle tube fixing seat (100) close to the rear wheel of the bicycle.

10. A bicycle, characterized in that: The bicycle includes the four-bar linkage shock absorbing mechanism according to any one of claims 1 to 9.

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