Vibration-damping bicycle frame and bicycle or electric bicycle
The vibration-damping bicycle frame optimizes the connection between brackets and seat bracket with elastic assemblies and limit structures, addressing cost issues and improving damping performance and comfort.
Patent Information
- Application Number
- JP2025571461
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-08-01
- Filing Date
- 2024-08-01
- Publication Date
- 2026-06-26
AI Technical Summary
Existing bicycle frames with vibration damping features are costly due to the use of multiple elastic assemblies, which increase production costs without optimizing the structure of the connection between the seat bracket and the bicycle frames.
A vibration-damping bicycle frame design that incorporates a front and rear bracket connected via an elastic assembly, with a seat bracket hinged to one end and a limit structure at the other, allowing for restricted movement and improved damping through a combination of hinge connection holes, limit plates, and pin shafts, enabling easy assembly and flexibility in road conditions.
The design maintains rider height by restricting seat bracket movement during obstacles, enhances vibration damping, and allows for simple structure modifications, reducing costs while maintaining comfort and performance.
Smart Images
Figure 2026521161000001_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of bicycles and electric bicycles, and particularly relates to a vibration-damping bicycle frame and a bicycle or an electric bicycle.
Background Art
[0002] A bicycle, also called a two-wheeler or bike, is a means of transportation that takes environmental considerations into account and can be used for outings. The focus of the global bicycle industry has shifted from transportation means to sports, mountain, and leisure types. In developed countries such as the United States and European countries, bicycles are relatively common sports, fitness, and leisure entertainment products.
[0003] With the development of bicycles, the requirements for bicycles have also increased. Especially in the field of vibration damping, some attach vibration damping under the seat, some attach vibration damping to the front fork or rear fork, and some are provided on both the front and rear forks, which significantly increases the cost of the bicycle.
[0004] Application No. CN2022X23110554.6 discloses a bicycle frame structure and a bicycle or an electric bicycle. The structure adopts two elastic assemblies, which are respectively provided between the bicycle front frame and the seat bracket and between the bicycle rear frame and the seat bracket, and the production cost is high.
Summary of the Invention
Problems to be Solved by the Invention
[0005] In order to solve the above technical problems, the present invention optimizes and adjusts the structure of the bicycle frame, the connection method between the seat bracket and the bicycle front frame and the bicycle rear frame, and the elastic assembly, and provides a vibration-damping bicycle frame and a bicycle or an electric bicycle that improve the vibration-damping performance of the bicycle frame and the comfort when the rider mounts.
Means for Solving the Problems
[0006] Specifically, the present invention discloses a vibration-damping bicycle frame, and the vibration-damping bicycle frame is A front bracket for mounting the front wheel and steering assembly, Includes a rear bracket used to mount the rear wheel, to which the front bracket is rotatably connected, A seat bracket and an elastic assembly are provided between the front bracket and the rear bracket. The elastic assemblies are rotatably connected to the front bracket and the rear bracket, respectively. The seat bracket is hinged at one end to a front bracket or a rear bracket, and at the other end to a rear bracket or a front bracket via a limit structure.
[0007] By adopting the above design, an elastic assembly is provided between the front bracket and the rear bracket, and a seat bracket connected to the front and rear brackets is provided above the elastic assembly. When the front wheel passes an obstacle, the front bracket is lifted upward, the elastic assembly is compressed, and the portions of the front and rear brackets connected to the seat bracket restrict the movement of the seat bracket, lowering its height and thereby maintaining the rider's height. After passing the obstacle, the elastic assembly is reset, and simultaneously resets the seat bracket. Similarly, when the rear wheel passes an obstacle, the rear bracket is lifted. The front and rear brackets restrict the movement of the seat bracket, lowering its height and thereby maintaining the rider's height.
[0008] Furthermore, the hinge connection hole at one end of the seat bracket for the front bracket, or the hinge connection hole at one end of the seat bracket for the rear bracket, is circular or oval in shape and is provided at one end of the seat bracket.
[0009] By adopting the above method, the shape of the hinge connection hole is made into multiple structures, which allows the pin shaft to rotate or slide easily within the hinge connection hole, while also restricting the movement of the seat bracket.
[0010] Furthermore, the front bracket includes a first connecting rod and L-shaped forward-facing mounting plates fixed to both sides of the first connecting rod, the two forward-facing mounting plates being rotatably connected to the rear bracket, and a first pin shaft for connection to the seat bracket being provided between the two forward-facing mounting plates.
[0011] Furthermore, the rear bracket includes a second connecting rod and an inverted L-shaped reverse mounting plate fixed to one end of the second connecting rod, the two reverse mounting plates being rotatably connected to the front bracket, and a second pin shaft connected to the seat bracket being provided between the two reverse mounting plates.
[0012] By adopting the above method, the forward and reverse mounting plates are made L-shaped, making it easier to attach the elastic assembly, and the vibration damping effect is improved by placing the elastic assembly between the forward and reverse mounting plates.
[0013] Furthermore, the elastic assembly has one end rotatably connected to the first pin shaft and the other end rotatably connected to the second pin shaft, and the elastic assembly uses one of a coil spring, a damper, or a steel plate spring.
[0014] By adopting the above approach, the elastic assembly can employ multiple structures, which can be selected according to road conditions.
[0015] Furthermore, the limit structure is an oval-shaped through-hole, which is provided at one end of the seat bracket and slidably connected to the first pin shaft or the second pin shaft.
[0016] By adopting the above method, the other end of the seat bracket employs an oval-shaped through hole, thereby limiting the direction and range of motion of the rear end of the seat bracket.
[0017] Furthermore, the limit structure includes a limit plate and a circular through hole, the circular through hole being provided at one end of the seat bracket. The limit plate is mounted between the forward mounting plate and the seat bracket, or between the reverse mounting plate and the seat bracket. The limit plate is connected at one end to a first pin shaft and at the other end to a circular through-hole in the seat bracket via a third pin shaft, and the other end of the seat bracket is hinged to a second pin shaft, or the limit plate is connected at one end to a second pin shaft and at the other end to a circular through-hole in the seat bracket via a third pin shaft, and the other end of the seat bracket is hinged to a first pin shaft.
[0018] By adopting the above method, the limit plate and circular through-hole restrict the direction of movement of the seat bracket, allowing the seat bracket to achieve different directions of movement and vibration damping effects, making it applicable to various road conditions. Only the seat bracket needs to be replaced, resulting in a simple structure and high flexibility.
[0019] This application further discloses a bicycle including a vibration-damping bicycle frame as described in any one of the above.
[0020] This application further discloses an electric bicycle including a vibration-damping bicycle frame as described in any one of the above.
[0021] To more clearly explain the technical concepts in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments or the prior art will be briefly described. [Brief explanation of the drawing]
[0022] [Figure 1] This is a schematic diagram of a vibration-damping bicycle frame. [Figure 2]It is an exploded view of a vibration-damping bicycle frame. [Figure 3] It is a schematic diagram of a vibration-damping bicycle frame limit structure including a limit plate. [Figure 4] It is an exploded view of a vibration-damping bicycle frame limit structure including a limit plate. [Figure 5] It is a schematic diagram of the structure where the hinge connection hole in the seat bracket is oval and the limit structure is an oval through-hole. [Figure 6] It is a schematic diagram of the structure where the hinge connection hole in the seat bracket is oval and the limit structure is a circular through-hole. [Figure 7] It is a schematic diagram of the structure where the hinge connection hole in the seat bracket is circular and the limit structure is an oval through-hole. [Figure 8] It is a schematic diagram of the rear bracket structure.
Embodiments for Carrying out the Invention
[0023] Hereinafter, the present invention will be described in more detail with reference to the drawings.
[0024] As shown in FIGS. 1-2, the present invention discloses a vibration-damping bicycle frame, and the vibration-damping bicycle frame includes a front bracket 1 for attaching the front wheel 43 and the steering assembly 4, and a rear bracket 2 used for attaching the rear wheel 29 and rotatably connected via a connecting member where the front bracket 1 is a sleeve 221, a seat bracket 3 and an elastic assembly 6 are provided between the front bracket 1 and the rear bracket 2, the elastic assembly 6 is rotatably connected to the front bracket 1 and the rear bracket 2 respectively, one end of the seat bracket 3 is hinge-connected to the front bracket 1 or the rear bracket 2, and the other end is connected to the rear bracket 2 or the front bracket 1 via a limit structure.
[0025] The front bracket 1 includes a first connecting rod 11 and L-shaped forward-facing mounting plates 12 fixed to both sides of the first connecting rod 11. The two forward-facing mounting plates 12 are rotatably connected to the rear bracket 2 via sleeves 221, and a first pin shaft 13 for connection to the seat bracket 3 is provided between the two forward-facing mounting plates 12.
[0026] The shape of the hinge connection hole 32 of the seat bracket 3 with the front bracket 1 or the rear bracket 2 may be circular, oval, or arc-shaped, and the hole is located at one end of the seat bracket 3.
[0027] The rear bracket 2 includes a second connecting rod 21 and an inverted L-shaped reverse mounting plate 22 fixed to one end of the second connecting rod 21, the rear wheel 29 is attached to the other end of the second connecting rod 21, the two reverse mounting plates 22 are rotatably connected to the front bracket 1 via a sleeve 221, and a second pin shaft 23 connected to the seat bracket 3 is provided between the two reverse mounting plates 22.
[0028] The steering assembly 4 includes a front fork 42 rotatably connected to a first connecting rod 11, and a handle 41 for controlling the front fork 42. A front wheel 43 is mounted on the bottom of the front fork 42, and the handle 41 is fixedly mounted on the top of the front fork 42 to control the direction of travel of the front wheel 43.
[0029] The elastic assembly 6 is rotatably mounted at one end on the first pin shaft 13 and at the other end on the second pin shaft 23, and uses one of the following: a coil spring, a damper, or a steel plate spring.
[0030] The limiting mechanism is provided at one end of the seat bracket 3 and is provided as an oval through-hole. When the first pin shaft 13 is hinged to the seat bracket 3, the second pin shaft 23 is slidably connected to the seat bracket via the oval through-hole. When the first pin shaft 13 is slidably connected to the seat bracket 3 via the oval through-hole, the second pin shaft 23 is hinged to the seat bracket 3.
[0031] In actual applications, when the front wheel 43 passes an obstacle, the front bracket 1 is lifted upward using the sleeve 221 as a pivot point, the elastic assembly 6 is compressed, the first pin shaft 13 or the second pin shaft 23 rotates or slides in the hinge connection hole 32, and the second pin shaft 23 or the first pin shaft 13 slides in the oval through hole. The hinge connection hole 32 and the oval through hole restrict the direction of movement of the seat bracket 3, lowering the height of the seat bracket 3 and thereby maintaining the height of the human body. After passing the obstacle, the elastic assembly 6 is reset, and at the same time, the seat bracket 3 is reset. Similarly, when the rear wheel 29 passes an obstacle, the rear bracket 2 is lifted. The hinge connection hole 32 or the oval through hole restricts the direction of movement of the seat bracket 3, lowering the height of the seat bracket 3 and thereby maintaining the height of the human body.
[0032] As shown in Figure 3-4, some embodiments of the present invention differ from other embodiments in that the limit structure includes a limit plate 24 and a circular through hole, the limit plate 24 is mounted between the forward mounting plate 12 and the seat bracket 3 or between the reverse mounting plate 22 and the seat bracket 3, and the circular through hole is provided at one end of the seat bracket 3.
[0033] In actual applications, when the front wheel 43 passes an obstacle, the front bracket 1 is lifted upward with the sleeve 221 as a pivot point, the elastic assembly 6 is compressed, the third pin shaft 25 rotates in the circular through hole, the second pin shaft 23 rotates or slides in the hinge connection hole 32, and the limit plate 24 swings between the forward mounting plate 12 and the seat bracket 3, or the first pin shaft 13 rotates or slides in the hinge connection hole 32, the third pin shaft 25 rotates in the circular through hole, and the limit plate 24 swings between the reverse mounting plate 22 and the seat bracket 3. The three components—the hinge connection hole 32, the limit plate 24, and the circular through hole—work together to restrict the direction of movement of the seat bracket 3, lowering the height of the seat bracket 3 and thereby maintaining the height of the human body. After passing the obstacle, the elastic assembly 6 is reset, and at the same time, the seat bracket 3 is reset. Similarly, when the rear wheel 29 passes an obstacle, the rear bracket 2 is lifted. The hinge connection hole 32, limit plate 24, and circular through hole restrict the direction of movement of the seat bracket 3, lowering the height of the seat bracket 3 and thereby maintaining the height of the human body.
[0034] Furthermore, if both ends of the seat bracket 3 are rotatably connected to the front bracket 1 and the rear bracket 2 (i.e., connected via circular through holes), this connection forms a fixed triangle, restricting the movement of the front bracket 1 and the rear bracket 2, and preventing the elastic assembly 6 from operating.
[0035] Therefore, the seat bracket 3 is hinged at one end to the front bracket 1 and connected at the other end to the rear bracket 2 via a limit structure, or the seat bracket 3 is hinged at one end to the rear bracket 2 and connected at the other end to the front bracket 1 via a limit structure. In this connection by the limit structure, there is a relative non-simple rotational displacement between the front bracket 1 and / or the rear bracket 2 and the seat bracket 3, and only in this case can mutual rotation between the front bracket 1 and the rear bracket 2 be achieved, causing the elastic assembly 6 to be compressed or stretched and reset, thereby achieving vibration damping.
[0036] When riding normally, the elastic assembly 6, under the action of elastic force, causes the front bracket 1 and rear bracket 2 to protrude outward, limited by the seat bracket 3 or by the elastic assembly 6 itself, so that the front bracket 1 and rear bracket 2 form a stable structure.
[0037] When one end of the seat bracket 3 is hinged to the front bracket 1 and the other end is connected to the rear bracket 2 via a limit structure, the limit structure connection in this combination may involve the seat bracket 3 and the rear bracket 2 contacting each other and being positioned by the weight of the rider. When the front bracket 1 and / or the rear bracket 2 encounter an obstacle, the front bracket 1 and the rear bracket 2 rotate relative to each other, the seat bracket 3 and the front bracket 1 rotate relative to each other, the seat bracket 3 and the rear bracket 2 are displaced relative to each other, the elastic assembly 6 is compressed, and vibration damping is achieved.
[0038] This application further provides a bicycle including the bicycle frame structure described in any one of the above. The bicycle frame is fitted with a seat 31, a steering assembly 4, a front wheel 43 and a rear wheel 29, the seat 31 being attached to a seat bracket 3, the front wheel 43 being attached to the front fork 42 of the steering assembly 4 and the steering of the front wheel 43 being controlled by a handle 41, thereby controlling the direction of travel of the bicycle, and the rear wheel 29 being attached to a rear bracket 2.
[0039] This application further provides an electric bicycle including the bicycle frame structure described in any one of the above. The bicycle can be an electric bicycle if a motor is provided on the front bracket 1 or the rear bracket 2, and a battery is mounted in a suitable position on the front bracket 1 or the rear bracket 2, and power is supplied to the front wheel 43 or the rear wheel 29 via a transmission assembly.
[0040] Those skilled in the art can make several modifications and improvements without departing from the original concept of the present invention, and these fall within the scope of the protection of the present invention. [Explanation of Symbols]
[0041] 1 Front Bracket 11. First connecting rod 12. Mounting plate in the correct direction 13. First pin axis 2 Rear Bracket 21 Second connecting rod 22 Reverse mounting plate 221 Sleeves 23. Second pin axis 24 Limit Plate 25. Third pin axis 29 Rear wheel 3 Seat Bracket 31 chairs 32 hinge connection holes 4. Steering Assembly 41 Handle 42 Front Fork 43 Front Wheel 6 Elastic Assembly
Claims
1. A vibration-damping bicycle frame, A front bracket (1) for attaching the front wheel (43) and the steering assembly (4), It includes a rear bracket (2) used for mounting the rear wheel (29) and to which the front bracket (1) is rotatably connected, A seat bracket (3) and an elastic assembly (6) are provided between the front bracket (1) and the rear bracket (2). The elastic assembly (6) is rotatably connected to the front bracket (1) and the rear bracket (2), respectively. The vibration-damping bicycle frame is characterized in that the seat bracket (3) has one end hinged to a front bracket (1) or a rear bracket (2), and the other end is connected to a rear bracket (2) or a front bracket (1) via a limit structure.
2. The vibration-damping bicycle frame according to claim 1, characterized in that the hinge connection hole for the front bracket (1) at one end of the seat bracket (3) or the hinge connection hole for the rear bracket (2) at one end of the seat bracket (3) is circular or oval in shape and is provided at one end of the seat bracket (3).
3. The vibration-damping bicycle frame according to claim 1, characterized in that the front bracket (1) includes a first connecting rod (11) and L-shaped forward-facing mounting plates (12) fixed to both sides of the first connecting rod (11), the two forward-facing mounting plates (12) are rotatably connected to the rear bracket (2), and a first pin shaft (13) for connection to the seat bracket (3) is provided between the two forward-facing mounting plates (12).
4. The vibration-damping bicycle frame according to claim 2, characterized in that the rear bracket (2) includes a second connecting rod (21) and an inverted L-shaped reverse mounting plate (22) fixed to one end of the second connecting rod (21), the two reverse mounting plates (22) being rotatably connected to the front bracket (1), and a second pin shaft (23) connected to the seat bracket (3) being provided between the two reverse mounting plates (22).
5. The vibration-damping bicycle frame according to claim 3 or 4, characterized in that the elastic assembly (6) has one end rotatably connected to the first pin shaft (13) and the other end rotatably connected to the second pin shaft (23), and the elastic assembly (6) uses one of a coil spring, a damper, or a steel plate spring.
6. The vibration-damping bicycle frame according to claim 4, characterized in that the limit structure is an oval through-hole, the oval through-hole is provided at one end of the seat bracket (3) and slidably connected to a first pin shaft (13) or a second pin shaft (23).
7. The limit structure includes a limit plate (24) and a circular through hole, the circular through hole being provided at one end of the seat bracket. The limit plate (24) is mounted between the forward mounting plate (12) and the seat bracket (3), or between the reverse mounting plate (22) and the seat bracket (3). The vibration-damping bicycle frame according to claim 4, characterized in that the limit plate (24) has one end connected to a first pin shaft (13) and the other end connected to a circular through hole in the seat bracket (3) via a third pin shaft (25), and the other end of the seat bracket (3) is hinged to a second pin shaft (23), or the limit plate (24) has one end connected to a second pin shaft (23) and the other end connected to a circular through hole in the seat bracket (3) via a third pin shaft (25), and the other end of the seat bracket (3) is hinged to a first pin shaft (13).
8. A bicycle characterized by including a vibration-damping bicycle frame according to any one of claims 1 to 7.
9. An electric bicycle characterized by including a vibration-damping bicycle frame as described in any one of claims 1 to 7.