Four-connecting-rod shock-proof frame

Abstract

The utility model discloses a four-connecting-rod shock-proof frame, and relates to the technical field of frames. The hanging frame is fixedly provided with a middle pipe, the middle pipe is symmetrically and rotationally connected with connecting rod pieces A, the connecting rod pieces A are rotationally connected with connecting rod pieces B, the other ends of the connecting rod pieces B are rotationally connected with an upper fork connector, the upper fork connector is provided with a connecting block B, and the lower fork connector is correspondingly provided with a connecting block A; the connecting block A is matched and connected with the connecting block B; the four-connecting-rod mechanism has the advantages that vibration from the road surface can be more effectively absorbed and dispersed through the four-connecting-rod mechanism, more stable and comfortable riding experience is provided for a rider, and riding safety and comfort are remarkably improved; the four-connecting-rod structure not only enhances the shock absorption effect, but also ensures the stability and controllability of the frame in the driving process through reasonable connecting rod layout and rotary connection, and the frame is endowed with a high-grade and fashionable appearance.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle frames, in particular to a four-link shock-absorbing vehicle frame. Background Art

[0002] In the design field of traditional two-wheeled vehicles, the shock-absorbing system has always been the key to improving riding comfort and safety. Although traditional shock-absorbing components such as springs and airbags can relieve road vibrations to a certain extent, their performance is often limited when facing complex and changeable road conditions, and it is difficult to meet the dual pursuit of riders for better shock-absorbing performance and handling stability. With the progress of technology and the improvement of consumer demands, there is an urgent need for a more efficient and stable shock-absorbing solution in the market.

[0003] Based on this, the applicant has proposed a four-link shock-absorbing vehicle frame to solve the above technical problems. Summary of the Utility Model

[0004] The utility model aims at the deficiencies in the prior art and provides a four-link shock-absorbing vehicle frame to solve the above technical problems.

[0005] The utility model is solved by the following technical solutions:

[0006] A four-link shock-absorbing vehicle frame includes a lower fork joint rotatably arranged on a hanger, a middle tube fixedly arranged on the hanger, two link pieces A symmetrically and rotatably connected to the middle tube, a link piece B rotatably connected to the link piece A, the other end of the link piece B rotatably connected to an upper fork joint, a connecting block B arranged on the upper fork joint, a corresponding connecting block A arranged on the lower fork joint, and the connecting block A is cooperatively connected with the connecting block B.

[0007] Preferably, a fixed seat is arranged on the hanger, the lower fork joint is in an "L" shape, and a shaft hole A is arranged at its bending part, and the shaft hole A is rotatably connected to the fixed seat coaxially.

[0008] Preferably, the fixed seat is connected to the hanger by welding.

[0009] Preferably, the fixed seat is connected to the middle tube by welding.

[0010] Preferably, one end of the lower fork joint is provided with a lower fork connecting part, and the lower fork joint is fixedly welded to the lower fork through the lower fork connecting part.

[0011] Preferably, a plurality of reinforcing ribs are arranged on the lower fork joint.

[0012] Preferably, the two lower fork joints are connected by a reinforcing shaft.

[0013] Preferably, a shaft seat is provided on the upper fork joint, two upper fork connecting parts are symmetrically arranged on the shaft seat, and the upper fork joint is fixedly welded to the upper fork through the upper fork connecting parts.

[0014] Preferably, a contact surface A is provided on the connecting block A, a contact surface B is provided on the connecting block B, and the contact surface A is adapted to the contact surface B.

[0015] Preferably, both the contact surface A and the contact surface B are inclined planes, and the contact surface A is parallel to the contact surface B.

[0016] Preferably, a shaft hole B is provided on the connecting rod piece A, a rotating shaft is provided on the middle tube, and the shaft hole B is connected to the rotating shaft by a bolt.

[0017] Preferably, a shaft hole D is further provided on the connecting rod piece A, a bearing is provided on the shaft hole D and is connected to one end of the connecting rod piece B in a matching manner.

[0018] Preferably, the other end of the connecting rod piece B is rotatably connected to the shaft seat, and a bearing is provided between the connecting rod piece B and the shaft seat.

[0019] Preferably, a base is fixedly provided on the hanger, a shock absorber is rotatably connected to the base, and the connecting rod piece A is rotatably connected to the shock absorber.

[0020] Preferably, a shaft hole C is provided on the connecting rod piece A, a connecting ear is provided at the upper end of the shock absorber, and the shaft hole C is connected to the connecting ear in a matching manner.

[0021] The beneficial effects of the present utility model are as follows:

[0022] 1. Significantly improve the shock absorption performance: Through the carefully designed four-link mechanism, this device can more effectively absorb and disperse the vibrations from the road surface, providing a smoother and more comfortable riding experience for the rider. This improvement is especially applicable to complex and changeable road conditions, significantly enhancing the riding safety and comfort;

[0023] 2. Optimize the handling stability: The four-link structure not only enhances the shock absorption effect but also ensures the stability and controllability of the frame during driving through a reasonable link layout and rotational connection. The rider can more confidently handle various road conditions and enjoy a more smooth riding experience;

[0024] 3. Reduce the manufacturing cost and maintenance difficulty: This device simplifies the design of the link mechanism, reduces the complexity of processing and assembly, thereby effectively reducing the manufacturing cost. At the same time, the simple structure also means lower maintenance difficulty and longer service life, saving the rider the later maintenance cost;

[0025] 4. Improve the product appearance and grade: By finely polishing and ingeniously arranging key components such as the connecting block and the connecting rod piece, this device not only achieves high-performance shock absorption effects but also endows the frame with a high-class and fashionable appearance. This design meets the dual pursuits of modern consumers for product appearance and quality, enhancing the market competitiveness of the product. Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will discuss the drawings required for use in the description of the embodiments or the prior art. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings.

[0027] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0028] Figure 2 is a three-dimensional structural schematic diagram of the present invention.

[0029] Figure 3 is a three-dimensional schematic diagram of the four-link shock absorption structure of the present invention.

[0030] Figure 4 is a three-dimensional schematic diagram of the four-link shock absorption structure of the present invention.

[0031] Figure 5 is a three-dimensional structural schematic diagram of the upper fork interface of the present invention.

[0032] Figure 6 is a three-dimensional structural schematic diagram of the lower fork interface of the present invention.

[0033] Figure 7 is a three-dimensional structural schematic diagram of the lower fork interface of the present invention.

[0034] Figure 8 is a three-dimensional structural schematic diagram of link A of the present invention.

[0035] In the figure: 1. Hanging rack, 2. Middle tube, 3. Lower fork joint, 31. Axle hole A, 32. Lower fork connecting part, 33. Connecting block A, 331. Contact surface A, 34. Reinforcing rib, 4. Upper fork joint, 41. Axle seat, 42. Upper fork connecting part, 43. Connecting block B, 431. Contact surface B, 5. Base, 6. Shock absorber, 7. Connecting rod piece A, 71. Axle hole B, 72. Axle hole C, 73. Axle hole D, 8. Connecting rod piece B, 9. Fixed seat. Detailed Embodiment

[0036] The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments described in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model. Embodiment 1:

[0037] As Figures 1 to 8 shown, a four-link shock-absorbing frame of the present utility model includes a lower fork joint 3 rotatably arranged on a hanging bracket 1. A middle tube 2 is fixedly arranged on the hanging bracket 1. Link pieces A7 are symmetrically and rotatably connected to the middle tube 2. A link piece B8 is rotatably connected to the link piece A7. The other end of the link piece B8 is rotatably connected to an upper fork joint 4. A connecting block B43 is arranged on the upper fork joint 4. A connecting block A33 is correspondingly arranged on the lower fork joint 3. The connecting block A33 is cooperatively connected with the connecting block B43.

[0038] A fixing seat 9 is arranged on the hanging bracket 1. The fixing seat 9 is connected to the hanging bracket 1 by welding, and the fixing seat 9 is connected to the middle tube 2 by welding, which improves the overall structural strength. At the same time, the welding method is economical and the operation difficulty is low. Of course, in other embodiments, the welding fixing method can be replaced by other fixing methods such as fixing by bolts.

[0039] The lower fork joint 3 is in an "L" shape, and a shaft hole A31 is arranged at its bending part. The shaft hole A31 is rotatably connected to the fixing seat 9 coaxially. One end of the lower fork joint 3 is provided with a lower fork connecting part 32. The lower fork joint 3 is fixedly welded to the lower fork through the lower fork connecting part 32. A plurality of reinforcing ribs 34 are arranged on the lower fork joint 3. The two lower fork joints 3 are connected by a reinforcing shaft. By arranging the reinforcing ribs 34 and the reinforcing shaft, the overall strength of the lower fork joint 3 is improved, better coping with complex road conditions and increasing its service life.

[0040] A shaft seat 41 is arranged on the upper fork joint 4. Two upper fork connecting parts 42 are symmetrically arranged on the shaft seat 41. The upper fork joint 4 is fixedly welded to the upper fork through the upper fork connecting parts 42.

[0041] The connecting block A33 is provided with a contact surface A331, and the connecting block B43 is provided with a contact surface B431. The contact surface A331 is adapted to the contact surface B431. Both the contact surface A331 and the contact surface B431 are inclined surfaces and are parallel to each other. When encountering bumps, due to a certain gap between the contact surface A331 and the contact surface B431, this gap can serve as a buffer distance. When the bumps are severe, the contact surface A331 contacts the contact surface B431 and rotates simultaneously, driving the link A and the link B to rotate. Through the link A and the link B, the shock absorber starts to function, effectively damping the shock and providing a better user experience.

[0042] In other embodiments, the contact surface A331 and the contact surface B431 do not have to be inclined surfaces, and these two surfaces do not necessarily have to be parallel. For example, one surface is a hemispherical convex surface and the other surface is a hemispherical concave surface, which are adapted to each other.

[0043] The link A7 is provided with a shaft hole B71, and the middle tube 2 is provided with a rotating shaft. The shaft hole B71 is connected to the rotating shaft by a bolt. The link A7 is also provided with a shaft hole D73. A bearing is provided on the shaft hole D73 and is connected to one end of the link B8 in a mating manner. The other end of the link B8 is rotatably connected to the shaft seat 41. A bearing is provided between the link B8 and the shaft seat 41. The hanger 1 is also fixedly provided with a base 5. A shock absorber 6 can be optionally rotatably connected to the base 5. The link A7 is rotatably connected to the shock absorber 6. The link A7 is provided with a shaft hole C72, and the upper end of the shock absorber 6 is provided with a connecting ear. The shaft hole C72 is connected to the connecting ear in a mating manner. Through the carefully designed four-bar linkage mechanism, this device can more effectively absorb and disperse the vibrations from the road surface, providing a more stable and comfortable riding experience for the rider. This improvement is especially applicable to complex and changeable road conditions, significantly enhancing the riding safety and comfort. The four-bar linkage structure not only enhances the shock absorption effect but also ensures the stability and controllability of the frame during driving through a reasonable linkage layout and rotational connection. The rider can more confidently handle various road conditions and enjoy a smoother riding experience.

[0044] Bearings can be provided at the rotational connection points of the above-mentioned various components to make the rotation smoother and achieve a better shock absorption effect. Embodiment 2:

[0045] Based on the above embodiments, the connecting block A33 on the lower fork joint 3 is rotatably connected to the shaft seat 41 of the upper fork joint 4, so that there is no need to provide a connecting block B43 on the upper fork joint 4, and at the same time, the contact surface A331 and the contact surface B431 are cancelled. When encountering bumps, the upper fork joint 4 and the lower fork joint 3 rotate simultaneously, driving the connecting rod piece A and the connecting rod piece B to rotate, enabling the shock absorber to function and achieving the shock absorption effect.

[0046] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0047] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A four-link suspension frame, characterized in that: The invention comprises a lower fork joint (3) rotatably arranged on a hanger (1); a middle tube (2) is fixedly arranged on the hanger (1); a connecting rod piece A (7) is symmetrically and rotatably connected to the middle tube (2); a connecting rod piece B (8) is rotatably connected to the connecting rod piece A (7); the other end of the connecting rod piece B (8) is rotatably connected to an upper fork joint (4); a connecting block B (43) is arranged on the upper fork joint (4); a connecting block A (33) is correspondingly arranged on the lower fork joint (3); the connecting block A (33) is cooperatively connected to the connecting block B (43).

2. A four-link shock-absorbing frame according to claim 1, characterized in that: The hanger (1) is provided with a fixing seat (9), the lower fork joint (3) is in an "L" shape, and an axial hole A (31) is provided at the bending part thereof, and the axial hole A (31) is coaxially rotatably connected with the fixing seat (9).

3. The four-link shock-absorbing frame according to claim 1, characterized in that: A lower fork connecting portion (32) is provided at one end of the lower fork joint (3), and the lower fork joint (3) is welded and fixed to the lower fork via the lower fork connecting portion (32).

4. The four-link shock-absorbing frame according to claim 1, characterized in that: The upper fork joint (4) is provided with an axle seat (41), two upper fork connecting parts (42) are symmetrically provided on the axle seat (41), and the upper fork joint (4) is welded and fixed to the upper fork via the upper fork connecting parts (42).

5. The four-link shock-absorbing frame according to claim 1, characterized in that: The connection block A (33) is provided with a contact surface A (331), and the connection block B (43) is provided with a contact surface B (431), and the contact surface A (331) is adapted to the contact surface B (431).

6. The four-link shock-absorbing frame according to claim 1, characterized in that: The connecting rod piece A (7) is provided with an axial hole B (71), the middle tube (2) is provided with a rotating shaft, and the axial hole B (71) is connected to the rotating shaft by bolts.

7. The four-link shock-absorbing frame according to claim 1, characterized in that: The connecting rod piece A (7) is also provided with an axial hole D (73), and the axial hole D (73) is provided with a bearing and is matched and connected with one end of the connecting rod piece B (8).

8. The four-link shock-absorbing frame according to claim 4, characterized in that: The other end of the connecting rod piece B (8) is rotatably connected to the shaft seat (41), and a bearing is provided between the connecting rod piece B (8) and the shaft seat (41).

9. The four-link shock-absorbing frame according to claim 1, characterized in that: The hanger (1) is also fixedly provided with a base (5), the base (5) is rotatably connected to a shock absorber (6), and the connecting rod sheet A (7) is rotatably connected to the shock absorber (6).

10. The four-link shock-absorbing frame according to claim 9, characterized in that: The connecting rod sheet A (7) is provided with an axial hole C (72), and the upper end of the shock absorber (6) is provided with a connecting ear, and the axial hole C (72) is matched and connected with the connecting ear.

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