CN218141958U - Novel motorcycle bottom fork - Google Patents
Novel motorcycle bottom fork Download PDFInfo
- Publication number
- CN218141958U CN218141958U CN202222742351.2U CN202222742351U CN218141958U CN 218141958 U CN218141958 U CN 218141958U CN 202222742351 U CN202222742351 U CN 202222742351U CN 218141958 U CN218141958 U CN 218141958U
- Authority
- CN
- China
- Prior art keywords
- longitudinal support
- support arm
- chain
- hole
- connecting lug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
The utility model discloses a novel motorcycle bottom fork, which comprises two longitudinal support arms and a cross beam, wherein the two ends of the cross beam are respectively connected with the middle parts of the two longitudinal support arms, and the front end of each longitudinal support arm is provided with a frame connecting part; the frame connecting part is provided with a frame connecting hole; the rear end of the longitudinal support arm is provided with a rear wheel connecting groove and a rear wheel adjusting screw hole; the method is characterized in that: the middle part of the cross beam is provided with a rear shock absorption connecting lug which protrudes upwards; the middle part of the rear section of one longitudinal support arm positioned on the left side is provided with a chain tension wheel connecting lug and a chain auxiliary clamp connecting lug which are protruded downwards; the middle part of the rear section of one longitudinal support arm on the right side is provided with a rear brake pump limiting part protruding towards one longitudinal support arm on the left side. The utility model discloses be different from current structural design, the shock attenuation is balanced about can realizing, and the travelling comfort is better, and more shock-resistant improves installation accuracy and rigidity intensity, is difficult for interfering, advantages such as reducible back brake pump vibration.
Description
Technical Field
The utility model belongs to the technical field of the motorcycle, especially, relate to a novel motorcycle chain stay.
Background
A chain stay is widely used in vehicles such as motorcycles and electric vehicles, and is one of main components for fixing a rear wheel at the rear of a vehicle frame and for connecting the rear wheel to the vehicle frame.
The conventional motorcycle bottom fork (refer to the structure of CN201030221673.2 external patent) comprises two longitudinal support arms and a cross beam, wherein two ends of the cross beam are respectively connected with the middle parts of the two longitudinal support arms, and the front end of each longitudinal support arm is provided with a frame connecting part; the frame connecting part is provided with a frame connecting hole; the rear end of the longitudinal support arm is provided with a rear wheel connecting groove and a rear wheel adjusting screw hole. It has the following disadvantages in use and is analyzed as follows:
the middle part of the cross beam is provided with two rear shock absorption connecting lugs which are raised upwards, and the two rear shock absorption connecting lugs are respectively provided with two rear shock absorption connecting holes; the rear shock absorption connecting end is inserted between the two rear shock absorption connecting lugs and is coaxially connected with the two rear shock absorption connecting holes, and the rear shock absorption is single, so that the problems of balanced left and right shock absorption, poor comfort and large impact force exist;
secondly, because the tension wheel and the secondary clamp (such as a clamping piece or a secondary wheel) have no connecting part, the tension wheel and the secondary clamp need to be fixedly connected by adding a connecting piece (such as a bracket) and a bolt, so that the strength is insufficient and the interference is easy to occur;
thirdly, since the rear brake pump is fixedly arranged on the motorcycle, the motorcycle has complex working conditions and is easy to generate vibration influence;
fourthly, the two longitudinal support arms are solid inside, heavy and high in cost, and meanwhile, the two longitudinal support arms and the cross beam are welded, so that the problem of insufficient strength due to poor welding is caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned defect problem or a plurality of defect problems that exist among the prior art, the utility model provides a novel motorcycle chain stay.
In order to achieve the purpose, the utility model provides a novel motorcycle bottom fork, which comprises two longitudinal support arms and a cross beam, wherein the two ends of the cross beam are respectively connected with the middle parts of the two longitudinal support arms, and the front end of each longitudinal support arm is provided with a frame connecting part; the frame connecting part is provided with a frame connecting hole; the rear end of the longitudinal support arm is provided with a rear wheel connecting groove and a rear wheel adjusting screw hole; the method is characterized in that: the middle part of the cross beam is provided with a single rear shock absorption connecting lug which protrudes upwards, and the rear shock absorption connecting lug is provided with a rear shock absorption connecting hole; a chain tensioning wheel connecting lug and a chain auxiliary clamping connecting lug which protrude downwards are arranged in the middle of the rear section of one longitudinal support arm on the left side, a chain tensioning wheel connecting hole is formed in the chain tensioning wheel connecting lug, and a chain auxiliary clamping connecting hole is formed in the chain auxiliary clamping connecting lug; the middle part of the rear section of one longitudinal support arm on the right side is provided with a rear brake pump limiting part protruding towards one longitudinal support arm on the left side.
By adopting the technical scheme, firstly, the rear shock absorption connecting lug is arranged singly, two rear shock absorbers can be respectively arranged at two side ends of the rear shock absorption connecting hole, the two rear shock absorber connecting ends are connected with the rear shock absorption connecting hole through a common shaft, and the rear shock absorption connecting lug is clamped between the connecting ends of the two rear shock absorbers; because the two rear shock absorbers are two, the left shock absorber and the right shock absorber are balanced, the comfort is better, and the shock resistance is better; secondly, a chain tensioning wheel connecting lug and a chain auxiliary clamping connecting lug which protrude downwards are arranged in the middle of the rear section of one longitudinal support arm positioned on the left side, a chain tensioning wheel connecting hole is formed in the chain tensioning wheel connecting lug, and a chain auxiliary clamping connecting hole is formed in the chain auxiliary clamping connecting lug; the chain tensioning wheel can be directly arranged on a chain tensioning wheel connecting hole of a chain tensioning wheel connecting lug, and the chain auxiliary clamp can be directly arranged on a chain auxiliary clamp connecting hole of a chain auxiliary clamp connecting lug, so that a connecting piece (such as a bracket) is not required to be added, the position precision of the chain auxiliary clamp and the chain tensioning wheel is improved, the strength is improved, the connecting piece and parts such as a bolt for fixing the connecting piece are reduced, and interference is not easily caused; in addition, because the middle part of the rear section of one longitudinal support arm on the right side is provided with a rear brake pump limiting part protruding towards the left longitudinal support arm, the vibration influence of the rear brake pump can be reduced because the brake pump limiting part can abut against or be close to the outer shell of the brake pump when vibration occurs. In addition, the single rear damping connecting lug, the chain tensioning wheel connecting lug and the chain auxiliary clamping connecting lug are integrated on the left longitudinal support arm, and the rear brake pump limiting part is integrated on the right longitudinal support arm, so that the integral strength is reliable, the connection is convenient, and the structure is different from the existing structure.
Preferably, the chain tensioner connecting lug is provided with two spaced apart chain tensioner connecting lugs.
Preferably, the cross beam and the two longitudinal support arms are integrally formed. The hole position or the mounting surface can be processed after casting molding, so that the cost of parts can be reduced, and the integral rigidity and strength can be improved.
Further, the longitudinal support arm is internally provided with an inner cavity; and the thickness of the cavity wall at the position other than the end part of the longitudinal support arm is 5-8mm. Therefore, the weight can be saved through the inner cavity, the material consumption and the cost are reduced, and the integral strength can be ensured.
Furthermore, a front process hole is formed in the middle of the front section of the longitudinal support arm; a rear fabrication hole is formed in the middle of the rear section of the longitudinal support arm; the front process hole and the rear process hole are communicated with the inner cavity. The inner core forming device has the advantages that the inner core forming device is convenient to take out the inner core forming device from the front process hole and the rear process hole during casting, operation is more convenient, and the inner cavity is cleaned more cleanly.
Furthermore, a wire clamp connecting hole is formed in the upper surface of the longitudinal support arm, and the upper surface of the longitudinal support arm is close to the joint of the longitudinal support arm and the cross beam. The wire clip can be conveniently installed.
Furthermore, a wire clamp connecting hole is formed in the upper surface of the longitudinal support arm positioned on the left side; two wire clamp connecting holes are formed in the upper surface of the longitudinal support arm on the right side; the three line card connecting holes are distributed in a triangular mode.
The utility model discloses beneficial effect:
first, the rear shock absorption connecting lug of the utility model adopts a single arrangement, two rear shock absorbers can be respectively arranged at the two side ends of the rear shock absorption connecting hole, the two rear shock absorber connecting ends are connected with the rear shock absorption connecting hole through a common shaft, and the rear shock absorption connecting lug is clamped between the connecting ends of the two rear shock absorbers; because the two rear shock absorbers are two, the left shock absorber and the right shock absorber are balanced, the comfort is better, and the shock resistance is better;
secondly, the middle part of the rear section of one longitudinal support arm positioned on the left side of the utility model is provided with a chain tensioning wheel connecting lug and a chain auxiliary clamping connecting lug which are protruded downwards, the chain tensioning wheel connecting lug is provided with a chain tensioning wheel connecting hole, and the chain auxiliary clamping connecting lug is provided with a chain auxiliary clamping connecting hole; the chain tensioning wheel can be directly arranged on a chain tensioning wheel connecting hole of a chain tensioning wheel connecting lug, and the chain auxiliary clamp can be directly arranged on a chain auxiliary clamp connecting hole of a chain auxiliary clamp connecting lug, so that connecting pieces such as a bracket are not required to be added, the position precision of the chain auxiliary clamp and the chain tensioning wheel is improved, the strength is improved, the connecting pieces and parts such as bolts for fixing the connecting pieces are reduced, and interference is not easily caused;
thirdly, the utility model has a rear brake pump limiting part protruding towards the left side in the middle of the rear section of the longitudinal support arm positioned on the right side, and the vibration influence of the rear brake pump can be reduced because the brake pump limiting part can be abutted against or close to the outer shell of the brake pump when vibration occurs; in addition, the single rear damping connecting lug, the chain tensioning wheel connecting lug and the chain auxiliary clamp connecting lug are integrated on the left longitudinal support arm, and the rear brake pump limiting part is integrated on the right longitudinal support arm, so that the whole strength is reliable, the connection is convenient, and the structure is different from the existing structure;
fourth, the utility model discloses because the chain take-up pulley engaging lug has two and interval distribution. Therefore, the chain tensioning wheel is clamped between the two chain tensioning wheel connecting lugs and is in rotating fit, so that the chain tensioning wheel can be prevented from axially moving and loosening to influence stable transmission, and the problem of chain release can be prevented;
fifth, the inner cavity is arranged in the longitudinal support arm of the utility model; and the thickness of the cavity wall at the position other than the end part of the longitudinal support arm is 5-8mm. Therefore, the inner cavity can save weight, reduce material consumption and cost and ensure the integral strength;
sixthly, the middle part of the front section of the longitudinal support arm is provided with a front fabrication hole; a rear fabrication hole is formed in the middle of the rear section of the longitudinal support arm; the front process hole and the rear process hole are communicated with the inner cavity. The inner core forming device has the advantages that the inner core forming device is convenient to take out the inner core forming device from the front process hole and the rear process hole during casting, operation is more convenient, and the inner cavity is cleaned more cleanly.
Drawings
Fig. 1 is a projection view of a novel motorcycle bottom fork of the present invention.
Fig. 2 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A in fig. 1.
Fig. 3-4 are perspective views of a novel motorcycle bottom fork of the present invention.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
example (b): referring to fig. 1-4, a novel motorcycle bottom fork comprises two longitudinal support arms 1 and a cross beam 2.
Referring to fig. 3-4, specifically, the two ends of the beam 2 are respectively connected to the middle portions of the two longitudinal arms 1, and the beam 2 and the two longitudinal arms 1 are integrally formed and combined to be substantially H-shaped. The hole position or the mounting surface can be processed after casting molding, so that the cost of parts can be reduced, and the integral rigidity and strength can be improved.
Referring to fig. 3-4, the connection between the longitudinal arm 1 and the beam 2 is divided into a front section and a rear section, so that the longitudinal arm 1 is divided into the front section and the rear section.
Referring to fig. 3-4, specifically, the front ends of the two longitudinal support arms 1 are provided with frame connecting parts 1-1; the frame connecting part 1-1 is provided with a frame connecting hole 1-11. The frame connecting holes 1-11 at the front ends of the two longitudinal support arms 1 are concentrically arranged.
Referring to fig. 3-4, in particular, the rear ends of the two longitudinal support arms 1 are respectively provided with a rear wheel connecting groove 1-2 and a rear wheel adjusting screw hole 1-3.
Referring to fig. 3-4, in particular, the middle of the cross beam 2 is provided with a single rear shock absorption connecting lug 2-1 protruding upwards, and the rear shock absorption connecting lug 2-1 is provided with a rear shock absorption connecting hole 2-11. Because the rear shock absorption connecting lug 2-1 is arranged singly, two rear shock absorbers can be respectively arranged at the two side ends of the rear shock absorption connecting hole 2-11, the two rear shock absorber connecting ends are connected with the rear shock absorption connecting hole 2-11 through a common shaft, and the rear shock absorption connecting lug 2-1 is clamped between the connecting ends of the two rear shock absorbers; because two rear shock absorbers are balanced in left and right shock absorption, the comfort is better, and the shock resistance is better.
Referring to fig. 3-4, specifically, a chain tensioning wheel connecting lug 1-4 and a chain secondary clamping connecting lug 1-5 protruding downwards are arranged in the middle of the rear section of one longitudinal support arm 1 on the left side, a chain tensioning wheel connecting hole 1-41 is formed in the chain tensioning wheel connecting lug 1-4, and a chain secondary clamping connecting hole 1-41 is formed in the chain secondary clamping connecting lug 1-5. Because the middle part of the rear section of one longitudinal support arm 1 positioned on the left side is provided with a chain tension wheel connecting lug 1-4 protruding downwards and a chain auxiliary clamp connecting lug 1-5, the chain tension wheel connecting lug 1-4 is provided with a chain tension wheel connecting hole 1-41, and the chain auxiliary clamp connecting lug 1-5 is provided with a chain auxiliary clamp connecting hole 1-41; the chain tensioning wheel can be directly installed on chain tensioning wheel connecting holes 1-41 of chain tensioning wheel connecting lugs 1-4, and the chain auxiliary clamp can be directly installed on chain auxiliary clamp connecting holes 1-41 of chain auxiliary clamp connecting lugs 1-5, so that connecting pieces (such as supports) are not required to be added, the position precision of the chain auxiliary clamp and the chain tensioning wheel is improved, the strength is improved, the connecting pieces and parts such as bolts for fixing the connecting pieces are reduced, and the interference is not easy to cause.
Referring to fig. 3-4, specifically, the middle of the rear section of one longitudinal arm 1 on the right side has a rear brake pump limiting part 1-6 protruding toward one longitudinal arm 1 on the left side. Because the middle part of the rear section of one longitudinal support arm 1 on the right side is provided with a rear brake pump limiting part 1-6 protruding towards the left side of the longitudinal support arm 1, the vibration influence of the rear brake pump can be reduced because the brake pump limiting part 1-6 can abut against or be close to and contact with the outer shell of the brake pump when vibration occurs.
In addition, the single rear shock absorption connecting lug 2-1, the chain tension wheel connecting lug 1-4, the chain auxiliary clamp connecting lug 1-5 and the rear brake pump limiting part 1-6 are integrated on the corresponding longitudinal support arm 1, so that the whole strength is reliable, the connection is convenient, and the structure is different from the existing structure.
Referring to fig. 3-4, preferably, the chain tensioner lugs 1-4 are two and spaced apart. Therefore, the chain tensioning wheel is clamped between the two chain tensioning wheel connecting lugs 1 to 4 and is in running fit, so that the problem that the chain tensioning wheel is loosened in axial displacement to influence stable transmission can be avoided, and the problem of chain release can be prevented.
Referring to fig. 2, further, the longitudinal arm 1 has an inner cavity N therein; and the thickness of the cavity wall at the position of the non-end part of the longitudinal support arm 1 is 5-8mm. Therefore, the weight can be saved through the inner cavity N, the material consumption and the cost are reduced, and the integral strength can be ensured.
Referring to fig. 2-4, further, a front fabrication hole 1-7 is arranged in the middle of the front section of the longitudinal support arm 1; the middle part of the rear section of the longitudinal support arm 1 is provided with a rear fabrication hole 1-8; the front fabrication holes 1-7 and the rear fabrication holes 1-8 are communicated with the inner cavity N. The inner core of the inner cavity N can be conveniently taken out from the front and rear fabrication holes during casting, the operation is more convenient, and the inner cavity is cleaned more cleanly.
Preferably, the front technical holes 1-7 of the two longitudinal support arms 1 are oppositely arranged, and the back technical holes 1-8 of the two longitudinal support arms 1 are oppositely arranged. Therefore, the front fabrication holes 1-7 and the rear fabrication holes 1-8 are not exposed, the integral appearance is not influenced, and dust is reduced.
Referring to fig. 3-4, further, the upper surface of the longitudinal support arm 1 is provided with wire clamp connection holes 1-9 near the joint with the beam 2. The wire clip can be conveniently installed. Specifically, a wire clamp connecting hole 1-9 is formed in the upper surface of the left longitudinal support arm 1; two wire clamp connecting holes 1-9 are formed in the upper surface of the longitudinal support arm 1 on the right side; the three line card connecting holes 1-9 are distributed in a triangular shape.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (7)
1. A novel motorcycle bottom fork comprises two longitudinal support arms (1) and a cross beam (2), wherein the middle parts of the two longitudinal support arms (1) are respectively connected with the two ends of the cross beam (2), and a frame connecting part (1-1) is arranged at the front end of each longitudinal support arm (1); a frame connecting hole (1-11) is formed in the frame connecting part (1-1); the rear end of the longitudinal support arm (1) is provided with a rear wheel connecting groove (1-2) and a rear wheel adjusting screw hole (1-3); the method is characterized in that:
the middle part of the cross beam (2) is provided with a single rear shock absorption connecting lug (2-1) which protrudes upwards, and the rear shock absorption connecting lug (2-1) is provided with a rear shock absorption connecting hole (2-11);
a chain tensioning wheel connecting lug (1-4) and a chain auxiliary clamping connecting lug (1-5) which are protruded downwards are arranged in the middle of the rear section of one longitudinal support arm (1) positioned on the left side, a chain tensioning wheel connecting hole (1-41) is formed in the chain tensioning wheel connecting lug (1-4), and a chain auxiliary clamping connecting hole (1-51) is formed in the chain auxiliary clamping connecting lug (1-5);
the middle part of the rear section of one longitudinal support arm (1) positioned on the right side is provided with a rear brake pump limiting part (1-6) protruding towards one longitudinal support arm (1) on the left side.
2. A novel motorcycle bottom fork as claimed in claim 1, wherein: the chain tension wheel connecting lugs (1-4) are distributed at intervals.
3. A novel motorcycle bottom fork as claimed in claim 1, wherein: the beam (2) and the two longitudinal support arms (1) are integrally formed.
4. A new motorcycle bottom fork as claimed in any one of claims 1 to 3, wherein: the longitudinal support arm (1) is internally provided with an inner cavity (N); and the thickness of the cavity wall on the non-end position of the longitudinal support arm (1) is 5-8mm.
5. The novel motorcycle chain stay as claimed in claim 4, wherein: the middle part of the front section of the longitudinal support arm (1) is provided with a front fabrication hole (1-7); the middle part of the rear section of the longitudinal support arm (1) is provided with a rear fabrication hole (1-8); the front process hole (1-7) and the rear process hole (1-8) are communicated with the inner cavity (N).
6. The novel motorcycle chain stay as claimed in claim 1, wherein: and line card connecting holes (1-9) are formed in the upper surface of the longitudinal support arm (1) close to the joint of the longitudinal support arm and the cross beam (2).
7. The novel motorcycle bottom fork as claimed in claim 6, wherein: a wire clamp connecting hole (1-9) is formed in the upper surface of the longitudinal support arm (1) on the left side; two line card connecting holes (1-9) are formed in the upper surface of the right longitudinal support arm (1); the three line card connecting holes (1-9) are distributed in a triangular mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222742351.2U CN218141958U (en) | 2022-10-18 | 2022-10-18 | Novel motorcycle bottom fork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222742351.2U CN218141958U (en) | 2022-10-18 | 2022-10-18 | Novel motorcycle bottom fork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218141958U true CN218141958U (en) | 2022-12-27 |
Family
ID=84570518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222742351.2U Active CN218141958U (en) | 2022-10-18 | 2022-10-18 | Novel motorcycle bottom fork |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218141958U (en) |
-
2022
- 2022-10-18 CN CN202222742351.2U patent/CN218141958U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5730547A (en) | Knuckle bracket | |
| CN218141958U (en) | Novel motorcycle bottom fork | |
| CN210661163U (en) | Rear spiral spring damping mounting structure of electric vehicle | |
| CN204623144U (en) | A kind of back stay and subframe assembly | |
| CN211893523U (en) | Carbon fiber type electric motorcycle bottom fork | |
| CN110900149B (en) | Automobile rear axle crimping tool | |
| CN211730962U (en) | Vehicle shock absorber mounting structure | |
| CN208559640U (en) | A kind of double antitheft unilateral chain stay systems of the anti-disc brake of rear-wheel | |
| CN210116342U (en) | High-strength lightweight rear lower control arm | |
| CN219172586U (en) | Rear bottom fork structure of electric motorcycle | |
| CN221273396U (en) | Independent suspension of electric vehicle | |
| US20100253030A1 (en) | Hybrid arm for an independent rear suspension for a motor vehicle | |
| CN215705530U (en) | Fork arm of shock absorber for vehicle | |
| CN213566310U (en) | Three shock attenuation electric motor car frame structure | |
| CN211468639U (en) | Motorcycle front mudguard and mounting structure thereof | |
| CN216636735U (en) | High-speed motorcycle frame assembly | |
| CN220721285U (en) | Motorcycle | |
| CN220465709U (en) | Motorcycle | |
| CN220809670U (en) | Cross-country electric motorcycle frame | |
| CN211869585U (en) | Carbon fiber type motorcycle bottom fork | |
| CN219635401U (en) | Adjustable electric vehicle bottom fork | |
| CN213921301U (en) | Novel steering gear positioning structure | |
| CN204309551U (en) | With the suspension gear of bumper safety sleeve brace panel | |
| CN211869095U (en) | Torsion beam rear axle assembly | |
| CN210653364U (en) | Heavy truck fender's mounting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 402560 Bailong community, Nancheng sub district office, Tongliang District, Chongqing Patentee after: Chongqing Tongliang District Baoke Machinery Manufacturing Co.,Ltd. Address before: 402560 Bailong community, Nancheng sub district office, Tongliang District, Chongqing Patentee before: CHONGQING CITY TONGLIANG DISTRICT BAOKE MACHINERY MANUFACTURING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |