CN211869585U

CN211869585U - Carbon fiber type motorcycle bottom fork

Info

Publication number: CN211869585U
Application number: CN202020449660.9U
Authority: CN
Inventors: 李睿; 古里阳; 罗浩
Original assignee: Chongqing Andes Motorcycle Manufacturing Co ltd
Current assignee: Chongqing Everest Yttrium Power Technology Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-11-06
Anticipated expiration: 2030-03-31

Abstract

The utility model discloses the application belongs to the technical field of motorcycle, specifically discloses a carbon fiber formula motorcycle chain stay, including two platelike crotch that are, fixedly connected with crossbeam between two crotch, two the mutual symmetry of crotch set up, and two the crotch between the setting of inclining each other, the crotch all includes front bezel, medium plate and back plate in proper order on extending its length direction, the back plate with angle between the medium plate is the obtuse angle. The utility model discloses can improve the structural strength of chain stay, make the stationarity of chain stay better.

Description

Carbon fiber type motorcycle bottom fork

Technical Field

The utility model discloses the application belongs to the technical field of motorcycle, specifically discloses a carbon fiber formula motorcycle chain stay.

Background

A bottom fork is widely used in vehicles such as motorcycles, electric vehicles, and the like, and is an important part for fixing a motor shaft at the rear of a frame and connecting a rear wheel of a motorcycle with the frame of the motorcycle. The seat fork is also called a rear seat fork because it is located behind the frame, and it can fix the rear wheel, bear the weight of the vehicle body, bear the power for driving the rear wheel and the tension when braking the rear wheel, and maintain the stability of the vehicle body, so the seat fork is an indispensable part in vehicles such as motorcycles and electric vehicles.

The bottom fork in the prior art is usually made of a round steel pipe or a square steel pipe, the appearance quality is low, the experience feeling of consumers is not strong, the bottom fork made of the steel pipe is heavy in weight, low in structural strength and poor in stability, and when a motorcycle is bent at a high speed, the rear bottom fork is easy to deform due to large torsion.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a carbon fiber formula motorcycle bottom fork aims at improving the structural strength of bottom fork, makes the stationarity of bottom fork better.

In order to achieve the above object, the basic scheme of the utility model is:

carbon fiber formula motorcycle chain stay, including two platelike crotch, fixedly connected with crossbeam between two crotch, two the mutual symmetry of crotch set up, and two the crotch between the slope setting each other, two the crotch all include front bezel, medium plate and the back plate that distributes in proper order along its length direction, the back plate with angle between the medium plate is the obtuse angle.

The working principle and the beneficial effects of the basic scheme are as follows:

1) symmetry and slope setting between two crotch among this technical scheme, still fixedly connected with crossbeam between two crotch, so set up intensity and the reliability that can effectual reinforcing whole chain stay, the stability between two crotch can be guaranteed to the crossbeam, and because divide into the triplex with the crotch among this technical scheme, and the angle between back plate and the medium plate is the obtuse angle, such setting can make the rear portion of chain stay and the rear wheel connection assembly of motorcycle simpler, and can form stronger steadiness with the rear wheel, thereby improve the stationarity of whole chain stay.

In addition, two forks are symmetrically arranged in an inclined manner, so that a narrow end and a wide end are arranged between the two forks, a motor of the electric motorcycle is generally coaxially arranged with a rear wheel in the installation process of the electric motorcycle, and a flat fork is arranged on the rear wheel, so that the required width is large.

2) The fork frame is plate-shaped in the technical scheme, the attractiveness of the whole bottom fork can be improved through the arrangement, the fork frame in the technical scheme is simple and ingenious in structure, attractive, high in stability, and capable of effectively improving the experience of consumers, is deeply loved by the consumers, and has a good market popularization effect.

Further, the width of the middle plate is sequentially reduced along the length direction, the large end of the middle plate is connected with the front plate, and the small end of the middle plate is connected with the rear plate.

So set up for between two crotch more stable, and compare in the width homogeneous phase on crotch length direction equal, the chain stay among this technical scheme is difficult to warp, when the motorcycle is at high-speed bending, the chain stay among this technical scheme is difficult to receive great torsion and produce the deformation.

Further, the crossbeam is connected at the juncture of front bezel and medium plate, and the length of front bezel is less than the length of medium plate.

So set up, make things convenient for the installation of rear wheel, make the rear wheel can be located between two crotch, and can avoid the crossbeam to produce the hindrance to the installation of rear wheel to make the frame distance of rear wheel and motorcycle close to relatively, and accord with the production technology of motorcycle, avoid between rear wheel and the motorcycle apart from too big, and weaken the antitorque square power of motorcycle.

Further, fillets are formed between the cross beam and the fork frame.

So set up, make whole chain stay more pleasing to the eye.

Further, the fork frame is made of carbon fiber materials.

So set up, can make whole chain stay quality light, intensity is high, the good reliability.

Further, the equal fixedly connected with fixed plate in upper end of back plate, all set up the recess that is the U-shaped on the fixed plate.

So set up, the setting of fixed plate is simple to operate installation back wheel brake pincers more.

Furthermore, the lower ends of the rear plates are fixedly connected with transmission mounting plates.

So set up, the derailleur mounting panel is used for installing the derailleur of motorcycle.

Furthermore, an n-shaped shaft hole is formed in one end, far away from the middle plate, of the rear plate.

The cross section of a motor shaft of a motorcycle is in an oblong flat shape, the motor shaft is convenient to mount through the shaft hole in the technical scheme, the shaft hole in the technical scheme is in an n shape, one end of the shaft hole is provided with a notch through the arrangement, the motor shaft is convenient to insert when the motor shaft is mounted, and therefore the mounting of the motor shaft is simplified.

Further, the equal fixedly connected with connecting cylinder of one end that the medium plate was kept away from to the front bezel, the connecting cylinder with the crotch sets up perpendicularly, the connecting cylinder is cylindricly, and the through-hole has been seted up along its axial to the connecting cylinder.

In this technical scheme, the setting of connecting cylinder is convenient for be connected with the frame of motorcycle, and the through-hole that can set up on the connecting cylinder among this technical scheme, when convenient more is connected with motorcycle frame, realizes detachable fixed connection through the bolt.

Further, the upper end fixedly connected with of crossbeam has two bumper shock absorber mounting brackets that mutual symmetry set up.

So set up, the setting of bumper shock absorber mounting bracket is convenient for at crotch and motorcycle rear wheel and connected back of frame, through installing damping device between the saddle of crossbeam and motorcycle to play absorbing effect.

Drawings

FIG. 1 is a perspective view of a first embodiment of the carbon fiber type motorcycle bottom fork of the present invention;

FIG. 2 is a front view of the first embodiment of the carbon fiber type motorcycle bottom fork of the present invention;

fig. 3 is a top view of a first embodiment of the carbon fiber type motorcycle bottom fork of the present invention;

FIG. 4 is a perspective view of a second embodiment of the carbon fiber motorcycle bottom fork of the present invention;

fig. 5 is a partial perspective view of the motor shaft.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: fork frame 1, front bezel 101, medium plate 102, back plate 103, crossbeam 2, connecting cylinder 3, bumper shock absorber mounting bracket 4, connecting seat 5, connecting plate 6, fixed plate 7, shaft hole 8, derailleur mounting panel 9, telescopic link 10, damping spring 11.

Example one

The embodiment is basically as shown in the attached figure 1: carbon fiber formula motorcycle chain stay is platelike crotch 1 including two, fixedly connected with crossbeam 2 between two crotch 1, crossbeam 2 and two crotch 1 integrated into one piece in this embodiment.

Two fork arms 1 are symmetry each other and set up, and incline each other between two fork arms 1 and set up, and two fork arms 1 all include front bezel 101, medium plate 102 and the back plate 103 that distribute along its length direction in proper order, have the contained angle between back plate 103 and the medium plate 102, and this contained angle is the obtuse angle, and the contained angle between medium plate 102 and the back plate 103 is 158 in this embodiment.

Referring to fig. 2, the width of the middle plate 102 decreases along the length direction thereof, and in this embodiment, the width of the middle plate 102 decreases from left to right, so that the middle plate 102 has a taper, which can enhance the strength of the fork carriage 1. The end of the middle plate 102 with the largest width (i.e. the large end of the middle plate 102) is integrally formed with the front plate 101, the end of the middle plate 102 with the smallest width (i.e. the small end of the middle plate 102) is integrally formed with the rear plate 103, and the connection between the middle plate 102 and the rear plate 103 is rounded in this embodiment.

In this embodiment, the cross beam 2 is connected at the junction of the front plate 101 and the middle plate 102, and both ends of the cross beam 2 and the two forks 1 are rounded. Referring to fig. 3, two front plates 101 are disposed in parallel with each other, two middle plates 102 are disposed in an inclined manner with each other, and the length of the front plate 101 is smaller than that of the middle plate 102.

As shown in fig. 1, the rear plates 103 are welded and fixed with fixing plates 7 at the upper ends thereof, the fixing plates 7 are of plate-shaped structures, U-shaped grooves are formed in the fixing plates 7, and the two U-shaped grooves on the two rear plates 103 are symmetrically arranged.

The rear plate 103 is fixedly welded at the lower end of the rear plate, a transmission mounting plate 9 is fixed at the lower end of the rear plate in a welding mode, the transmission mounting plate 9 is used for mounting a transmission of a motorcycle, through holes are formed in the transmission mounting plate 9, and bolts can pass through the through holes formed in the transmission mounting plate 9 when the transmission is mounted, so that the transmission is fixed on the transmission mounting plate 9.

An n-shaped shaft hole 8 is formed in one end, away from the middle plate 102, of the rear plate 103, and one end, away from the middle plate 102, of the shaft hole 8 is communicated with the rear plate 103, so that one end, away from the middle plate 102, of the shaft hole 8 is a notch. The motor in this embodiment is installed on the rear wheel, and the motor that needs to be installed this moment is wheel hub motor usually, and shaft hole 8 in this embodiment is used for installing the fixed motor shaft, and it is shown with reference to fig. 5 that, wheel hub motor's motor shaft is the flat of obround usually, and the structure that shaft hole 8 is n shape in this embodiment can make things convenient for the installation of motor shaft more fixed, only need insert the motor shaft from the breach end in shaft hole 8 can make the motor shaft be located shaft hole 8.

As shown in fig. 1, a connecting cylinder 3 is welded and fixed to one end of the front plate 101, which is far away from the middle plate 102, the connecting cylinder 3 is perpendicular to the fork frame 1, the connecting cylinder 3 is cylindrical, and a through hole is formed in the connecting cylinder 3 along the axial direction of the connecting cylinder. The provision of the connecting cylinder 3 facilitates the connection of the entire fork 1 to the frame of the motorcycle.

In this embodiment, the upper end of the middle plate 102 is fixedly connected with a connecting plate 6 through screws, the connecting plate 6 is close to the rear plate 103, the upper end of the connecting plate 6 is fixedly welded with a connecting seat 5, the upper part of the connecting seat 5 is provided with a through hole, and the connecting seats 5 on the two fork frames 1 are symmetrically arranged. The connecting seat 5 in this embodiment is convenient for installing a fender above the rear wheel, and can support and connect the fender.

The bottom fork in this embodiment wholly adopts the carbon fiber material to make, and its intensity is high, and the quality is light.

In the embodiment, the motor is suitable for electric vehicles such as electric motorcycles, and the motor is mounted on the rear wheel and is mounted coaxially with the rear wheel.

Fork frame 1 all is platelike in this embodiment, and such setting can improve the aesthetic property of whole chain stay, and 1 simple structure of fork frame among this technical scheme is ingenious, both pleasing to the eye, and stability is higher moreover, effectively improves consumer's experience sense, receives liking of consumer deeply, has better marketing effect.

Example two

As shown in fig. 4, the carbon fiber type motorcycle bottom fork is different from the first embodiment in that: the upper end welded fastening of crossbeam 2 has two bumper shock absorber mounting bracket 4 that mutual symmetry set up. In this embodiment, the shock absorber mounting frame 4 and the cross beam 2 are inclined to each other, an included angle is formed between the shock absorber mounting frame 4 and the front plate 101, and the included angle between the shock absorber mounting frame 4 and the front plate 101 is an obtuse angle.

Two bumper shock absorber mounting brackets 4 are used for installing the bumper shock absorber, and the bumper shock absorber that uses in this embodiment includes telescopic link 10 and damping spring 11, and during the installation, the one end of telescopic link 10 is located between two bumper shock absorber mounting brackets 4 and through screw and bumper shock absorber mounting bracket 4 fixed connection, and damping spring 11 covers in the telescopic link 10 outside, and the one end that bumper shock absorber mounting bracket 4 was kept away from to telescopic link 10 is fixed with the seat of motorcycle. The bottom fork in the embodiment can realize the installation of the shock absorber, thereby playing a shock-absorbing role in the motorcycle.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The carbon fiber type motorcycle bottom fork is characterized by comprising two platy fork frames, a cross beam is fixedly connected between the two fork frames, the two fork frames are symmetrically arranged, the two fork frames are inclined to each other, the two fork frames comprise front plates, middle plates and rear plates which are sequentially distributed along the length direction of the fork frames, and the angles between the rear plates and the middle plates are obtuse angles.

2. The carbon fiber type motorcycle bottom fork according to claim 1, wherein the middle plate has a width that decreases in sequence along a length direction thereof, and a large end of the middle plate is connected to the front plate and a small end of the middle plate is connected to the rear plate.

3. The carbon fiber motorcycle flat fork of claim 1, wherein the cross member is connected at the intersection of a front plate and a middle plate, and the length of the front plate is less than the length of the middle plate.

4. The carbon fiber motorcycle flat fork of claim 3, wherein the cross member and the fork are rounded.

5. The carbon fiber motorcycle flat fork of claim 1, wherein the fork is made of carbon fiber.

6. The carbon fiber type motorcycle bottom fork according to claim 1, wherein the upper ends of the rear plates are fixedly connected with fixing plates, and the fixing plates are provided with U-shaped grooves.

7. The carbon fiber motorcycle bottom fork of claim 1, wherein a transmission mounting plate is fixedly connected to each of the lower ends of the rear plates.

8. The carbon fiber type motorcycle bottom fork according to claim 1, wherein an n-shaped shaft hole is formed at one end of the rear plate away from the middle plate.

9. The carbon fiber type motorcycle bottom fork according to claim 1, wherein a connecting cylinder is fixedly connected to one end of the front plate away from the middle plate, the connecting cylinder is perpendicular to the fork, the connecting cylinder is cylindrical, and a through hole is formed in the connecting cylinder in the axial direction of the connecting cylinder.

10. The carbon fiber type motorcycle bottom fork according to claim 1, wherein two shock absorber mounting brackets are fixedly connected to the upper end of the cross beam, and are symmetrically arranged with respect to each other.