A type of shock-absorbing motorcycle flat fork

Abstract

This utility model relates to the field of motorcycle components, specifically disclosing a shock-absorbing motorcycle swingarm, including a left straight beam, a right straight beam, a fixed crossbeam, and a movable crossbeam. The two ends of the fixed crossbeam are connected to the left and right straight beams. The left straight beam has a left sliding groove containing a left spring, and the right straight beam has a right sliding groove containing a right spring. The movable crossbeam is slidably mounted on the right and left straight beams, and its two sides are connected to the left and right springs, respectively. The purpose of this utility model is to solve the technical problem of shock absorption.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle components, and specifically discloses a shock-absorbing motorcycle flat fork. Background Technology

[0002] The rear swingarm is one of the important components of a motorcycle. It mainly consists of left and right load-bearing beams and a crossbeam connecting the left and right load-bearing beams. The crossbeam is welded across the middle of the load-bearing beams, near the front. Bushings are welded to the front ends of the left and right load-bearing beams. The rear swingarm has an overall "H" shape structure and is installed between the motorcycle frame and the wheel axle, serving as a support and connection.

[0003] Motorcycles vibrate to varying degrees during acceleration, deceleration, and braking. While motorcycles typically have shock-absorbing springs, these primarily dampen the seat to prevent vibrations from affecting the rider, offering little benefit to the motorcycle itself. The swingarm is one of the most prone to breakage; neglecting to dampen it can shorten the motorcycle's lifespan and pose safety risks. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a shock-absorbing motorcycle swingarm to solve the technical problem of how to reduce shock.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A shock-absorbing motorcycle swingarm includes a left straight beam, a right straight beam, a fixed crossbeam, and a movable crossbeam. The fixed crossbeam is connected to the left and right straight beams at both ends. The left straight beam has a left sliding groove containing a left spring, and the right straight beam has a right sliding groove containing a right spring. The movable crossbeam is slidably mounted on the right and left straight beams, and its two sides are connected to the left and right springs, respectively. This design, with movable crossbeams on the straight beams and right straight beams, and connected to the left and right straight beams via the left and right springs, allows vibration energy to be transferred to the movable crossbeams when the motorcycle vibrates. The energy is then dissipated by the left and right springs, preventing vibration from affecting the swingarm and extending its service life.

[0007] Optionally, a left bushing is provided on the left straight beam, a right bushing is provided on the right straight beam, and a rotating shaft is provided on the left bushing and the right bushing.

[0008] Optionally, the fixed crossbeam is provided with two ear plates for installation.

[0009] Optionally, the movable crossbeam includes several crossbeam blocks and several V-shaped spring plates, with the crossbeam blocks and spring plates arranged alternately. The leftmost crossbeam block has a left flat frame at its left end, which is slidably connected to a left slide rail. The rightmost crossbeam block has a right flat frame at its right end, which is slidably connected to a right slide rail. This design allows the movable crossbeam to be compressed or stretched, further dissipating vibration energy.

[0010] Optionally, the included angle between the plurality of said crossbeam blocks is equal to the included angle of the spring sheet.

[0011] Optionally, the crossbeam block is hollow rectangular with a hollow bottom and two support frames integrally formed in the middle, and the spring sheet is welded between the two support frames.

[0012] Optionally, the movable crossbeam is located between the fixed crossbeam and the pivot.

[0013] The working principle and beneficial effects of this solution are as follows:

[0014] In this design, new movable crossbeams are installed on the left and right straight beams. These movable crossbeams can move on the left and right springs under vibration, thus dissipating energy. Simultaneously, the movable crossbeams themselves can also compress or extend to dissipate energy.

[0015] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0017] Figure 2 This is a structural diagram of the movable crossbeam and reinforcing plate;

[0018] Figure 3 This is a structural schematic diagram of the bottom of the crossbeam block.

[0019] The following are the markings in the attached diagram: left straight beam 1, right straight beam 2, fixed crossbeam 3, ear plate 4, reinforcing plate 5, left bushing 6, right bushing 7, rotating shaft 8, movable crossbeam 9, right slide groove 10, right spring 11, right flat frame 12, crossbeam block 13, spring plate 14, support frame 15. Detailed Implementation

[0020] The following detailed description illustrates the specific implementation method:

[0021] Example

[0022] A type of shock-absorbing motorcycle swingarm, such as Figures 1-3 As shown, it includes a left straight beam 1, a right straight beam 2, a fixed crossbeam 3, and a movable crossbeam 9.

[0023] The fixed crossbeam 3 is connected to the left straight beam 1 and the right straight beam 2 at both ends, and each end of the fixed crossbeam 3 is equipped with a reinforcing plate 5, which is inclined. A left bushing 6 is installed on the left straight beam 1, and a right bushing 7 is installed on the right straight beam 2. A rotating shaft 8 is installed on both the left bushing 6 and the right bushing 7. Two ear plates 4 for installation are installed on the fixed crossbeam 3. A movable crossbeam 9 is located between the fixed crossbeam 3 and the rotating shaft 8.

[0024] The left straight beam 1 has a relatively thick reinforcing plate 5 near the pivot 8, with a left sliding groove containing a left spring. The right straight beam 2 also has a relatively thick reinforcing plate 5 near the pivot 8, with a right sliding groove 10 containing a right spring 11. Both the left and right springs 11 are serpentine springs. The movable crossbeam 9 includes several crossbeam blocks 13 and several V-shaped spring plates 14, arranged intersectingly. The leftmost crossbeam block 13 has a left flat frame at its left end, which is slidably connected to the left sliding groove and fixedly connected to the left spring. The rightmost crossbeam block 13 has a right flat frame 12 at its right end, which is slidably connected to the right sliding groove 10 and fixedly connected to the right spring 11. The included angle between the crossbeam blocks 13 is equal to the included angle of the spring plates 14. The crossbeam block 13 is hollow and rectangular, with a hollow bottom. Two support frames 15 are integrally formed in the middle, and spring plates 14 are welded between the two support frames 15. Several crossbeam blocks 13 can be rotatably connected or have gaps.

[0025] In practice:

[0026] Left and right sliding grooves 10 are respectively opened on the two reinforcing plates 5 near the pivot 8. The main structure of the grooves is rectangular, with a wide internal dimension and a small dimension for the portion penetrating the side of the reinforcing plate 5, which can prevent the movable crossbeam 9 from detaching. After the left and right sliding grooves 10 are opened, left and right springs 11 are welded into them, and the movable crossbeam 9 is installed. During operation, when the flat fork is affected by vibration, the flat fork can transfer the vibration energy to the movable crossbeam 9. The movable crossbeam 9 can move to dissipate energy. When it moves, it will pull the left and right springs 11 to dissipate energy. Because the reinforcing plate 5 is inclined, the movable crossbeam 9 will also be stretched or compressed when it moves, which can also play a role in dissipating energy. In this embodiment, the movable crossbeam 9 acts like a damper on a building, set inside the flat fork, to dissipate energy and reduce the vibration of the flat fork. Moreover, in this embodiment, the movable crossbeam 9 can be added to most flat forks. The installation method is simple and convenient, and the effect is good. It is a very good improvement solution.

[0027] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics in the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A shock absorbing motorcycle fork, characterized by: It includes a left straight beam, a right straight beam, a fixed crossbeam, and a movable crossbeam. The two ends of the fixed crossbeam are connected to the left and right straight beams. The left straight beam is provided with a left sliding groove, and a left spring is provided in the left sliding groove. The right straight beam is provided with a right sliding groove, and a right spring is provided in the right sliding groove. The two sides of the movable crossbeam are slidably mounted on the right and left straight beams, and the two sides of the movable crossbeam are respectively connected to the left and right springs.

2. A shock absorbing motorcycle fork as defined in claim 1 wherein: A left bushing is provided on the left straight beam, a right bushing is provided on the right straight beam, and a rotating shaft is provided on both the left and right bushings.

3. A shock absorbing motorcycle fork as defined in claim 2 wherein: Two ear plates for installation are provided on the fixed crossbeam.

4. A shock-absorbing motorcycle flat fork according to claim 3, characterized in that: The movable crossbeam includes several crossbeam blocks and several V-shaped spring plates. The crossbeam blocks and spring plates are arranged in a crisscross pattern. The left end of the leftmost crossbeam block is provided with a left flat frame, which is slidably connected to the left slide groove. The right end of the rightmost crossbeam block is provided with a right flat frame, which is slidably connected to the right slide groove.

5. A shock-absorbing motorcycle flat fork according to claim 4, characterized in that: The included angle between several of the aforementioned crossbeam blocks is equal to the included angle of the spring sheet.

6. A shock-absorbing motorcycle flat fork according to claim 5, characterized in that: The crossbeam block is hollow and rectangular, with a hollow bottom and two support frames integrally formed in the middle. The spring sheet is welded between the two support frames.

7. A shock-absorbing motorcycle flat fork according to claim 6, characterized in that: The movable crossbeam is located between the fixed crossbeam and the pivot.

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