CN215514005U - Reinforced rear bottom fork - Google Patents

Abstract

The utility model relates to a strenghthened type back chain stay, be responsible for and connect the connecting pipe that two chain stays were responsible for including two chain stays, two chain stays are responsible for along connecting pipe the central axis mirror setting, and two chain stays are responsible for and all are equipped with first minute pipe and second minute pipe, and first minute pipe and second minute pipe both ends welding leaves the space between first minute pipe and the second minute pipe, and fixedly connected with bracing piece, bracing piece slope setting between first minute pipe and the second minute pipe. This application has and forms the chain stay through setting up first minute pipe and second minute pipe welding and is responsible for, makes the motorcycle chain stay be responsible for the power that receives and can disperse first minute pipe and second minute pipe, has improved the steadiness of back chain stay and the effect of durability.

Description

Reinforced rear bottom fork

Technical Field

The application relates to the technical field of rear bottom forks of motorcycles, in particular to a reinforced rear bottom fork.

Background

The rear bottom fork is one of the important parts of the motorcycle, the rear bottom fork mainly comprises two bottom fork main pipes and a connecting pipe for connecting the two main pipes, the rear bottom fork is used for connecting a motorcycle frame and a rear wheel shaft, the existing motorcycle rear bottom fork main pipes are generally designed to be single-pipe type, when the motorcycle runs on a bumpy road surface, the impact force generated by the motorcycle is larger than the maximum bearing force of the rear bottom fork, and the rear bottom fork is easy to deform or break.

In view of the above-mentioned related art, the inventor believes that there is a case where the impact force generated by the motorcycle is greater than the maximum bearing force of the rear fork when the motorcycle runs on a bumpy road surface, which easily causes the rear fork to be easily deformed or broken.

SUMMERY OF THE UTILITY MODEL

In order to improve the steadiness and the durability of back chain stay, this application provides a strenghthened type back chain stay.

The application provides a strenghthened type back chain stay adopts following technical scheme: be responsible for and connect the connecting pipe that two chain stays were responsible for including two chain stays, two chain stays are responsible for with connecting pipe the central axis mirror image sets up, two the chain stay is responsible for and all is equipped with first minute pipe and second minute pipe, first minute pipe and the welding of second minute pipe both ends, first minute pipe and the second leaves the space between the minute pipe, fixedly connected with bracing piece between first minute pipe and the second minute pipe, the bracing piece slope sets up.

Through adopting above-mentioned technical scheme, divide a tub welding to form the chain stay through setting up first minute pipe and second and be responsible for, make the motorcycle chain stay be responsible for the power that receives and can disperse first minute pipe and second and divide the pipe, improved the steadiness and the durability of back chain stay, divide fixedly connected with bracing piece and bracing piece slope setting between the pipe at first minute pipe and second, improved the steadiness that the chain stay was responsible for.

Preferably, the support rod is arranged obliquely relative to the first branch pipe.

By adopting the technical scheme, the supporting rod is obliquely arranged relative to the first branch pipe, so that the impact force of the motorcycle on the rear bottom fork can be better decomposed.

Preferably, a rubber block mounting seat is fixedly connected to the pipe wall of one end, close to one of the main pipes of the bottom fork, of the connecting pipe.

Through adopting above-mentioned technical scheme, set up the rubber block mount pad and conveniently install the rubber block of protection motorcycle chain on the connecting pipe, prevent that motorcycle chain and back chain stay from bumping, rubbing when the motorcycle motion.

Preferably, the pipe wall of the connecting pipe, which is far away from one end of the rubber block mounting seat, is fixedly connected with a limiting block, and the limiting block is provided with a limiting hole.

Through adopting above-mentioned technical scheme, be used for installing the brake axle through setting up the stopper, the brake axle is worn to establish on spacing hole, brake equipment after easy to assemble.

Preferably, one end of each of the two bottom fork main pipes is provided with a middle shaft cylinder, and the side wall of each middle shaft cylinder is fixedly connected with one end of each first branch pipe welded with the corresponding second branch pipe.

By adopting the technical scheme, the middle shaft barrel is arranged on the bottom fork main pipe, so that the middle shaft of the motorcycle frame is convenient to install, and the rear bottom fork is connected with the motorcycle frame.

Preferably, the other ends of the two bottom fork main pipes are fixedly connected with wheel shaft installation seats, the side surfaces of the wheel shaft installation seats are fixedly connected with the other ends, welded with the first branch pipe and the second branch pipe, of the wheel shaft installation seats, and installation holes are formed in the two wheel shaft installation seats.

By adopting the technical scheme, the rear wheel axle is convenient to install through the axle mounting seat and the mounting hole on the main pipe of the bottom fork, so that the rear bottom fork is connected with the rear wheel of the motorcycle, and the frame of the motorcycle is also connected with the rear wheel.

Preferably, the two wheel axle mounting seats are fixedly connected with damping plates, and the two damping plates are fixedly connected with bolts.

Through adopting above-mentioned technical scheme, through setting up two shock attenuation boards and bolt for the convenience of installation bumper shock absorbers, the impact force to the frame when reducing the motorcycle motion.

Preferably, the chain box mounting seats are arranged on the bottom fork main pipe close to the rubber block mounting seat, at least two chain box mounting seats are arranged on the two chain box mounting seats, round holes are formed in the two chain box mounting seats, and the circle centers of the two round holes are located on the same straight line.

By adopting the technical scheme, the chain box can be conveniently installed by arranging the chain box installation seats which are not less than two.

Preferably, the two middle shaft cylinders are internally provided with buffer sleeves.

By adopting the technical scheme, the impact force of the middle shaft of the motorcycle frame on the rear frame during motorcycle movement can be reduced by arranging the buffer sleeve in the middle shaft cylinder, and the stability and the durability of the rear bottom fork are improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the rear bottom fork strength is improved by arranging one bottom fork main pipe into two branch pipes and arranging the supporting rods between the two branch pipes.

2. Through setting up the rubber block mount pad, prevent that motorcycle chain and back chain fork from bumping, rubbing when the motorcycle motion from taking place.

Drawings

Fig. 1 is a schematic view of a reinforced rear bottom fork structure.

Fig. 2 is a schematic bottom view of a reinforced rear bottom fork.

Description of reference numerals: 1. a right bottom fork main pipe; 2. a left bottom fork main pipe; 21. a first branch pipe; 22. a second branch pipe; 23. a chain case mounting seat; 3. a connecting pipe; 31. a rubber block mounting seat; 32. a limiting block; 33. a limiting hole; 4. a support bar; 5. a middle shaft cylinder; 6. a buffer sleeve; 7. a wheel axle mounting seat; 8. mounting holes; 9. a damper plate; 10. a bolt; 11. a circular hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a reinforced rear bottom fork. Referring to fig. 1, including two bottom forks and being responsible for and connect two bottom forks and be responsible for connecting pipe 3, two bottom forks are responsible for and are responsible for 2 and right bottom forks respectively along connecting pipe 3 the central axis mirror image setting, and two bottom forks are responsible for and are responsible for 2 for the left bottom fork respectively, and connecting pipe 3 is the arc setting, and 3 one end fixed connection of connecting pipe are responsible for 2 at the left bottom fork, and 3 other end fixed connection of connecting pipe are responsible for 1 at the right bottom fork.

Referring to fig. 1, a first branch pipe 21 and a second branch pipe 22 are arranged on the left bottom fork main pipe 2, the first branch pipe 21 and the second branch pipe 22 are arranged in an arc shape, two ends of the first branch pipe 21 and the second branch pipe 22 are welded, and a gap is left between the first branch pipe 21 and the second branch pipe 22.

Referring to fig. 1, one end of the left bottom fork main tube 2 is fixedly connected with a middle shaft tube 5 for mounting a middle shaft of a motorcycle frame, the side wall of the middle shaft tube 5 is fixedly connected with one end welded with a first branch tube 21 and a second branch tube 22, a buffer sleeve 6 is arranged in the middle shaft tube 5, the middle shaft tube 5 is sleeved on the buffer sleeve 6, the middle shaft of the motorcycle frame is sleeved in the buffer sleeve 6, the buffer sleeve 6 can reduce the impact force of the middle shaft of the motorcycle frame on a rear frame when the motorcycle moves, and the stability and the durability of the rear bottom fork are improved.

Referring to fig. 1, the other end of the left bottom fork main tube 2 is fixedly connected with a wheel axle mounting seat 7 for mounting a rear wheel, a groove is formed in the wheel axle mounting seat 7, the side wall of the wheel axle mounting seat 7 is fixedly connected with the other end welded with a first branch tube 21 and a second branch tube 22, a mounting hole 8 is formed in the wheel axle mounting seat 7, a wheel axle is arranged in the mounting hole 8 in a penetrating manner, a shock absorption plate 9 for mounting a shock absorber is fixedly connected to the wheel axle mounting seat 7, and a bolt 10 for connecting the shock absorber is fixedly connected to the shock absorption plate 9.

Referring to fig. 1, a support rod 4 is arranged on a main pipe 2 of the left bottom fork, the support rod 4 is arranged close to a middle shaft barrel 5 in an inclined manner, one end of the support rod 4 is fixedly connected with the pipe wall of a first branch pipe 21, the other end of the support rod 4 is fixedly connected with the pipe wall of a second branch pipe 22, the support rod 4 is supported between the first branch pipe 21 and the second branch pipe 22, the first branch pipe 21, the second branch pipe 22 and the support rod 4 are connected with each other and then form two triangular structures, and the structure of the main pipe 2 of the left bottom fork is more stable.

Referring to fig. 1, the right bottom fork main tube 1 has the same structure as the left bottom fork main tube 2, and will not be described again. One end of the connecting pipe 3 is connected with the side wall of the supporting rod 4 of the left bottom fork main pipe 2, the other end of the connecting pipe 3 is fixedly connected with the side wall of the supporting rod 4 of the right bottom fork main pipe 1, and the outer cambered surface of the connecting pipe 3 is close to the middle shaft barrel 5.

Referring to fig. 1, the first branch pipe 21 of the left bottom fork main pipe 2 is further fixedly connected with two chain box mounting seats 23 for mounting chain boxes, one chain box mounting seat 23 is close to the middle shaft barrel 5, the other chain box mounting seat 23 is close to the wheel shaft mounting seat 7, round holes 11 are formed in the two chain box mounting seats 23, and the round holes 11 facilitate chain box mounting.

Referring to fig. 1, a rubber block mounting seat 31 for mounting a rubber block for protecting a chain is fixedly connected to a pipe wall of one end of the connecting pipe 3 close to the left bottom fork main pipe 2, and the cross section of the rubber block mounting seat 31 is arranged in a shape like a Chinese character 'Contraband', so that the rubber block is conveniently mounted.

Referring to fig. 2, the connecting pipe 3 is close to two stoppers 32 of one end fixedly connected with of the right bottom fork main pipe 1, and the two stoppers 32 are all provided with a limiting hole 33, and the two stoppers 32 are used for installing a brake shaft and limiting the brake shaft.

The embodiment principle of the reinforced rear bottom fork in the embodiment is as follows:

referring to fig. 1 and 2, two chain stay main pipes are all provided with a first branch pipe 21 and a second branch pipe 22, and the first branch pipe 21, the second branch pipe 22 and the support rod 4 are connected to form two triangles, so that the stability and the durability of the rear frame are greatly improved. The middle shaft barrel 5 is internally provided with the buffer sleeve 6, so that the impact force of a middle shaft of the motorcycle frame on the rear frame during the movement of the motorcycle can be reduced, and the stability and the durability of the rear bottom fork are improved. The rubber block mounting seat 31 is arranged to facilitate rubber blocks, so that the chain is not easy to collide and rub with the rear bottom fork. Through setting up chain box mount pad 23 easy to assemble chain box in order better to protect the chain, set up two stopper 32 and can make things convenient for brake equipment's installation, set up bolt 10 on shock attenuation board 9, make things convenient for the installation of bumper shock absorber.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a flat fork behind strenghthened type which characterized in that: connecting pipe (3) that two chain stays were responsible for and were connected two chain stays and be responsible for are included, two chain stays are responsible for and are followed connecting pipe (3) the central axis mirror image sets up, two the chain stay is responsible for and all is equipped with first minute pipe (21) and second minute pipe (22), first minute pipe (21) and the second minute pipe (22) both ends welding, first minute pipe (21) and the second is divided and is left the clearance between pipe (22), fixedly connected with bracing piece (4) between first minute pipe (21) and the second minute pipe (22).

2. The reinforced chain stay of claim 1, wherein: the supporting rod (4) is obliquely arranged relative to the first branch pipe (21).

3. The reinforced chain stay of claim 2, wherein: and a rubber block mounting seat (31) is fixedly connected to the pipe wall of one end, close to one of the main pipes of the bottom fork, of the connecting pipe (3).

4. The reinforced chain stay of claim 3, wherein: the connecting pipe (3) is far away from a limiting block (32) fixedly connected to the pipe wall at one end of the rubber block mounting seat (31), and a limiting hole (33) is formed in the limiting block (32).

5. The reinforced chain stay of claim 4, wherein: two one of the chain stay is responsible for and all is equipped with well beam barrel (5), the lateral wall of well beam barrel (5) with first minute pipe (21) and second minute pipe (22) welded one end fixed connection.

6. The reinforced chain stay of claim 5, wherein: the other ends of the two bottom fork main pipes are fixedly connected with wheel shaft installation seats (7), the side faces of the wheel shaft installation seats (7) are fixedly connected with the other ends of the first branch pipe (21) and the second branch pipe (22) in a welded mode, and installation holes (8) are formed in the two wheel shaft installation seats (7).

7. The reinforced chain stay of claim 6, wherein: the two wheel shaft mounting seats (7) are fixedly connected with damping plates (9), and the two damping plates (9) are fixedly connected with bolts (10).

8. The reinforced chain stay of claim 7, wherein: the chain box mounting seats (23) which are not less than two are arranged on the bottom fork main pipe close to the rubber block mounting seats (31), round holes (11) are formed in the chain box mounting seats (23), and the circle centers of the round holes (11) are on the same straight line.

9. The reinforced chain stay of claim 8, wherein: and buffer sleeves (6) are arranged in the two middle shaft cylinders (5).

Images