CN110682989A - Rear bottom fork of wheel type power vehicle and manufacturing method thereof - Google Patents
Rear bottom fork of wheel type power vehicle and manufacturing method thereof Download PDFInfo
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- CN110682989A CN110682989A CN201911084627.9A CN201911084627A CN110682989A CN 110682989 A CN110682989 A CN 110682989A CN 201911084627 A CN201911084627 A CN 201911084627A CN 110682989 A CN110682989 A CN 110682989A
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- fork arm
- arm
- right fork
- left fork
- connecting parts
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 34
- 229920003023 plastic Polymers 0.000 claims abstract description 23
- 239000004033 plastic Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 4
- 238000013016 damping Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K25/00—Axle suspensions
- B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K19/00—Cycle frames
- B62K19/02—Cycle frames characterised by material or cross-section of frame members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
The invention relates to a rear bottom fork of a wheeled power vehicle, which comprises a left fork arm and a right fork arm, wherein the left fork arm and the right fork arm are made of plastic steel materials or sheet-shaped film plastics; the front ends of the left fork arm and the right fork arm are connected into a whole and are U-shaped; the rear end parts of the left fork arm and the right fork arm are respectively provided with a notch for inserting a rear axle; the metal inserts are embedded in the gaps of the left fork arm and the right fork arm, are sheet and also have gaps, and the positions of the gaps of the metal inserts correspond to the positions of the gaps of the left fork arm and the right fork arm. A method of manufacturing a rear fork for a wheeled motor vehicle is also disclosed. The invention can realize the light weight requirement of the rear bottom fork product and simultaneously ensure the strength and the wear resistance of the product.
Description
Technical Field
The invention belongs to the technical field of wheel-type power vehicles, and particularly relates to a rear bottom fork of a wheel-type power vehicle and a manufacturing method thereof.
Background
Along with the increase of urban traffic pressure, the two-wheeled motor vehicle gradually becomes the first choice of people's short distance trip with its characteristics that receive traffic pressure to influence for a short time, and two-wheeled motor vehicle contains motorcycle, electric motor car, moped etc. especially electric motor car, and its green's characteristic is liked by people deeply, and people have also had higher requirement to the design of electric motor car simultaneously. The electric motor car rear bottom fork is the important part of electric motor car framework, and mainly used fixes electric motor car rear axle and frame, and the bottom fork dress trim cover is installed on the bottom fork, covers the protection with the connecting portion of bottom fork and rear axle, promotes aesthetic measure simultaneously.
Fig. 1 and 2 show a conventional rear fork structure. As shown in the figure: the two opposite fork arms A1 and A2 are provided, the two fork arms A1 and A2 are made of aluminum materials, the front end parts of the two fork arms A1 and A2 are provided with connecting parts extending in opposite directions, and a bolt A3 connects the two fork arms A1 and A2 into a whole through the connecting parts of the front end parts of the fork arms A1 and A2. The rear end parts of the fork arms A1 and A2 are provided with notches A4 for inserting rear wheel shafts. The fork arms A1 and A2 mainly adopt a cover body structure with a notch at the rear end part. Since the rear wheel of the electric vehicle is often the main part for bearing the weight, the strength of the rear fork is very important, and the strength of the rear fork of the cover body structure is not enough. Therefore, in order to increase the strength of the rear fork, some products adopt reinforcing ribs A5 with various shapes added in the cover body structures of the fork arms A1 and A2.
Because the two fork arms a1 and a2 (including the extended connecting parts thereof) are mainly made of aluminum (metal material) in a whole, the fork arms have the defects of large weight, complex processing and high cost, in order to realize the light weight of the rear bottom fork component of the wheel-type motor vehicle, a material with low material cost and light weight is needed to be adopted for replacing the fork arms, and simultaneously, the strength of the rear bottom fork product is considered, including the strength and the wear resistance of the connecting parts of the rear bottom fork and other functional components (such as a rear wheel shaft and a brake component).
Disclosure of Invention
The invention aims to provide a rear bottom fork of a wheeled power vehicle and a manufacturing method thereof, which mainly overcome the defects of large weight, complex processing and high cost of the conventional rear bottom fork product made of metal materials, can meet the light weight requirement of the rear bottom fork product, and simultaneously ensure the strength and the wear resistance of the product.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a rear bottom fork of a wheeled power vehicle is characterized in that: the left fork arm and the right fork arm are made of plastic steel materials or sheet-shaped film plastics; the front ends of the left fork arm and the right fork arm are connected into a whole and are U-shaped; the rear end parts of the left fork arm and the right fork arm are respectively provided with a notch for inserting a rear axle; the metal inserts are embedded in the gaps of the left fork arm and the right fork arm, are sheet and also have gaps, and the positions of the gaps of the metal inserts correspond to the positions of the gaps of the left fork arm and the right fork arm.
The rear bottom fork of the wheel-type power vehicle is characterized in that: the front end connecting parts of the left fork arm and the right fork arm are respectively provided with a corresponding positioning bulge and a corresponding positioning groove, and the positioning bulges and the positioning grooves are used for preventing the front end connecting parts of the left fork arm and the right fork arm from radially rotating after being correspondingly contacted and positioned; the front end connecting parts of the left fork arm and the right fork arm are correspondingly contacted and positioned, and then are connected and combined through the fixing element.
The rear bottom fork of the wheel-type power vehicle is characterized in that: the front end connecting parts of the left fork arm and the right fork arm are respectively provided with a fixed shaft mounting hole, and a fixed shaft sleeve made of metal is mounted in the fixed shaft mounting holes; the peripheries of the fixing shaft mounting holes of the front end connecting parts of the left fork arm and the right fork arm are respectively provided with an annular bulge and an annular groove which are corresponding in position and shape, and the annular bulge and the annular groove are used for preventing the front end connecting parts of the left fork arm and the right fork arm from radially rotating after being correspondingly contacted and positioned.
The rear bottom fork of the wheel-type power vehicle is characterized in that: the left fork arm and the right fork arm are both provided with damping mechanism mounting seats.
The rear bottom fork of the wheel-type power vehicle is characterized in that: the inner side of the left fork arm or the right fork arm is embedded with a brake part mounting column made of metal.
The rear bottom fork of the wheel-type power vehicle is characterized in that: reinforcing ribs are arranged on the inner sides of the left fork arm and the right fork arm; the metal brake part mounting post is embedded in the reinforcing rib.
The rear bottom fork of the wheel-type power vehicle is characterized in that: decorative covers are arranged outside the gaps of the left fork arm and the right fork arm.
A method for manufacturing a rear fork of a wheeled motor vehicle as described above, characterized in that: the left fork arm and the right fork arm of the rear bottom fork are formed by plastic steel materials or sheet-shaped film plastics through injection molding; the connecting parts of the left fork arm and the right fork arm with the rear wheel shaft, the connecting parts of the left fork arm and the right fork arm with the braking mechanism and the connecting parts between the left fork arm and the right fork arm are provided with metal inserts for improving the strength and the wear resistance.
The manufacturing method of the rear bottom fork of the wheel-type power vehicle is characterized in that: the connecting part of the left fork arm and the right fork arm is injected with a positioning bulge or a groove, and the left fork arm and the right fork arm are connected through a connecting part after being in contact positioning.
Compared with the prior art, the invention has the following advantages:
1. because the main body (the left fork arm and the right fork arm) of the invention is made of light plastic steel material or sheet-shaped film plastic, the product has the advantages of smaller weight and lower material cost. And the adoption of light plastic steel materials or sheet-shaped film plastics can be helpful for realizing the injection molding manufacture of the main body and also reduce the manufacturing cost of the product.
2. In order to enhance the strength and the wear resistance of the notch part for inserting the rear axle, the metal inserts are embedded in the notch parts of the left fork arm and the right fork arm, the metal inserts are flaky and also have notches, and the positions of the notches of the metal inserts correspond to the positions of the notches of the left fork arm and the right fork arm, so that the defects that the strength and the wear resistance of a plastic steel material or a flaky film plastic are insufficient at important parts are overcome.
3. In the invention, the front end connecting parts of the left fork arm and the right fork arm are respectively provided with a corresponding positioning bulge and a corresponding positioning groove, and the positioning bulges and the positioning grooves are used for ensuring that the front end connecting parts of the left fork arm and the right fork arm do not generate radial rotation after being correspondingly contacted and positioned; the positioning protrusion and the positioning groove can not only complete the positioning when the fixing element is locked, but also avoid the phenomenon of dislocation between the left fork arm and the right fork arm after the fixing element is used for a period of time.
4. In the invention, the front end connecting parts of the left fork arm and the right fork arm are respectively provided with a fixed shaft mounting hole, and a fixed shaft sleeve made of metal is mounted in the fixed shaft mounting holes; the peripheries of the fixing shaft mounting holes of the front end connecting parts of the left fork arm and the right fork arm are respectively provided with an annular bulge and an annular groove which are corresponding in position and shape, and the annular bulge and the annular groove are used for preventing the front end connecting parts of the left fork arm and the right fork arm from radially rotating after being correspondingly contacted and positioned. The metal stationary shaft cover contributes to enhancing the strength of the stationary shaft mounting portion. The annular bulge and the annular groove can also avoid the phenomenon of dislocation between the left fork arm and the right fork arm after the use for a period of time.
5. In the invention, the brake part mounting column made of metal is embedded in the inner side of the left fork arm or the right fork arm and is used for mounting a drum brake or a disc brake, and the brake part mounting column is made of metal so as to increase the strength of a mounting part.
Drawings
Fig. 1 is a perspective assembly view of a conventional rear fork.
Fig. 2 is an exploded perspective view of a prior art rear fork.
Fig. 3 is a perspective assembly view of the present invention.
Fig. 4 is an exploded perspective view of the present invention.
Fig. 5 is a schematic structural view of the left yoke portion of the present invention.
Fig. 6 is a schematic structural view of the right yoke portion of the present invention.
FIG. 7 is a front view of the left yoke portion of the present invention.
Fig. 8 is a sectional view taken along line a-a of fig. 7.
Fig. 9 is a sectional view taken along line B-B of fig. 7.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 3-9, it is a schematic structural view of a rear fork of a wheeled motor vehicle according to a preferred embodiment of the present invention. The fork arm comprises a left fork arm 1 and a right fork arm 2 which are made of plastic steel materials or sheet film plastics (SMC); the front ends of the left fork arm 1 and the right fork arm 2 are connected into a whole and are U-shaped; the rear end parts of the left fork arm 1 and the right fork arm 2 are respectively provided with a notch 4 for inserting a rear axle; the metal inserts 5 are embedded in the gaps 4 of the left fork arm 1 and the right fork arm 2, the metal inserts 5 are sheet-shaped and also provided with gaps 51, and the positions of the gaps 51 of the metal inserts correspond to the positions of the gaps 4 of the left fork arm 1 and the right fork arm 2.
The main body (the left fork arm 1 and the right fork arm 2) of the invention is made of light plastic steel material or sheet-shaped film plastic, so that the product has the advantages of smaller weight and lower material cost. Certainly, in order to enhance the strength and the wear resistance of the notch 4 part for inserting the rear axle, the metal inserts 5 are embedded in the notches 4 of the left fork arm 1 and the right fork arm 2, the metal inserts 5 are sheet-shaped and also have notches 51, and the positions of the notches 51 of the metal inserts correspond to the positions of the notches 4 of the left fork arm 1 and the right fork arm 2, so that the defects that the strength and the wear resistance of the important parts are insufficient by plastic-steel materials or sheet-shaped film plastics are overcome.
In the invention, the front end connecting parts of the left fork arm 1 and the right fork arm 2 are respectively provided with a corresponding positioning bulge 11 and a corresponding positioning groove 21, and the positioning bulge 11 and the positioning groove 21 are used for preventing the front end connecting parts of the left fork arm 1 and the right fork arm 2 from radially rotating after being correspondingly contacted and positioned; the front ends of the left fork arm 1 and the right fork arm 2 are correspondingly contacted and positioned, and then the two are connected and combined through a fixing element (such as a bolt). If the left yoke 1 and the right yoke 2 are connected only by the fixing element, the left yoke 1 and the right yoke 2 are inevitably dislocated with the increase of the service time, and the positioning of the fixing element during locking can be completed by the positioning protrusion 11 and the positioning groove 21, and the phenomenon of the dislocation between the left yoke 1 and the right yoke 2 after the fixing element is used for a period of time can also be avoided.
In the invention, the front end connecting parts of the left fork arm 1 and the right fork arm 2 are respectively provided with a fixed shaft mounting hole, and a fixed shaft sleeve 3 made of metal is mounted in the fixed shaft mounting holes; the periphery of the fixing shaft mounting hole of the front end connecting part of the left fork arm 1 and the right fork arm 2 is respectively provided with an annular bulge 12 and an annular groove 22 which are corresponding in position and shape, and the annular bulge 12 and the annular groove 22 are used for preventing the front end connecting part of the left fork arm 1 and the right fork arm 2 from radially rotating after being correspondingly contacted and positioned. The fixing boss 3 made of metal contributes to enhancing the strength of the fixing shaft mounting portion. The annular protrusion 12 and the annular groove 22 can also prevent the left yoke 1 and the right yoke 2 from being misaligned after a period of use.
In the invention, the left fork arm 1 and the right fork arm 2 are both provided with a damping mechanism mounting seat 6.
In the invention, the brake part mounting column 7 made of metal is embedded in the inner side of the left fork arm 1 or the right fork arm 2 and is used for mounting a drum brake or a disc brake, and the brake part mounting column 7 is made of metal so as to increase the strength of a mounting part. Particularly, reinforcing ribs 8 are arranged on the inner sides of the left fork arm 1 and the right fork arm 2; the metal brake member mounting post 7 is embedded in the reinforcing rib 8.
In the invention, the decorative covers 9 are arranged outside the gaps 4 of the left fork arm 1 and the right fork arm 2, thereby not only ensuring the attractive appearance of a rear bottom fork product, but also protecting the gap 4 for inserting a rear wheel shaft.
In order to realize the rear bottom fork of the wheel-type power vehicle, the invention also discloses a manufacturing method of the rear bottom fork of the wheel-type power vehicle, wherein a left fork arm 1 and a right fork arm 2 of the rear bottom fork are formed by plastic steel materials or sheet film plastics through injection molding; the connecting parts of the left fork arm 1 and the right fork arm 2 with the rear wheel shaft, the connecting parts of the left fork arm 1 and the right fork arm 2 with the braking mechanism and the connecting parts between the left fork arm 1 and the right fork arm 2 are provided with metal inserts for increasing the strength and the wear resistance.
Specifically, in the method, positioning protrusions or grooves (such as the positioning protrusions 11 and the positioning grooves 21, and the annular protrusions 12 and the annular grooves 22) are molded at the connecting part of the left yoke 1 and the right yoke 2, and the left yoke 1 and the right yoke 2 are connected through the connecting part after being in contact positioning.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the content of the claims of the present invention should be within the technical scope of the present invention.
Claims (9)
1. A rear bottom fork of a wheeled power vehicle is characterized in that: the fork arm comprises a left fork arm (1) and a right fork arm (2) which are made of plastic steel materials or sheet-shaped film plastics; the front ends of the left fork arm (1) and the right fork arm (2) are connected into a whole and are U-shaped; the rear end parts of the left fork arm (1) and the right fork arm (2) are respectively provided with a notch (4) for inserting a rear axle; the metal inserts (5) are embedded in the positions of the notches (4) of the left fork arm (1) and the right fork arm (2), the metal inserts (5) are sheet-shaped and also provided with notches (51), and the positions of the notches (51) of the metal inserts correspond to the positions of the notches (4) of the left fork arm (1) and the right fork arm (2).
2. The rear fork of a wheeled motor vehicle as defined in claim 1, wherein: the front end connecting parts of the left fork arm (1) and the right fork arm (2) are respectively provided with a corresponding positioning protrusion (11) and a corresponding positioning groove (21), and the positioning protrusion (11) and the positioning groove (21) are used for preventing the front end connecting parts of the left fork arm (1) and the right fork arm (2) from generating radial rotation after being correspondingly contacted and positioned; the front end connecting parts of the left fork arm (1) and the right fork arm (2) are correspondingly contacted and positioned, and then are connected and combined through a fixing element.
3. The rear fork of a wheeled motor vehicle as defined in claim 2, wherein: the front end connecting parts of the left fork arm (1) and the right fork arm (2) are respectively provided with a fixed shaft mounting hole, and a fixed shaft sleeve (3) made of metal is mounted in the fixed shaft mounting holes; the peripheries of the fixing shaft mounting holes of the front end connecting parts of the left fork arm (1) and the right fork arm (2) are respectively provided with an annular bulge (12) and an annular groove (22) which are corresponding in position and shape, and the annular bulge (12) and the annular groove (22) are used for preventing the front end connecting parts of the left fork arm (1) and the right fork arm (2) from radially rotating after being correspondingly contacted and positioned.
4. The rear fork of a wheeled motor vehicle as defined in claim 1, wherein: the left fork arm (1) and the right fork arm (2) are both provided with damping mechanism mounting seats (6).
5. The rear fork of a wheeled motor vehicle as defined in claim 1, wherein: a brake component mounting column (7) made of metal is embedded in the inner side of the left fork arm (1) or the right fork arm (2).
6. The rear fork of a wheeled motor vehicle as defined in claim 5, wherein: reinforcing ribs (8) are arranged on the inner sides of the left fork arm (1) and the right fork arm (2); the metal brake part mounting column (7) is embedded in the reinforcing rib (8).
7. The rear fork of a wheeled motor vehicle as defined in claim 1, wherein: decorative covers (9) are arranged outside the gaps (4) of the left fork arm (1) and the right fork arm (2).
8. A method of manufacturing a rear fork for a wheeled motor vehicle as claimed in claim 1, 2, 3, 4, 5, 6 or 7, characterized in that: the left fork arm (1) and the right fork arm (2) of the rear bottom fork are formed by plastic steel materials or sheet-shaped film plastics through injection molding; the connecting parts of the left fork arm (1) and the right fork arm (2) with the rear wheel axle, the connecting parts of the left fork arm (1) and the right fork arm (2) with the braking mechanism and the connecting parts between the left fork arm (1) and the right fork arm (2) are provided with metal inserts for increasing the strength and the wear resistance.
9. The method of manufacturing a rear fork of a wheeled motor vehicle as defined in claim 8, wherein: the connecting part of the left fork arm (1) and the right fork arm (2) is injected with a positioning bulge or a groove, and the left fork arm (1) and the right fork arm (2) are connected through a connecting part after being in contact positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911084627.9A CN110682989A (en) | 2019-11-08 | 2019-11-08 | Rear bottom fork of wheel type power vehicle and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911084627.9A CN110682989A (en) | 2019-11-08 | 2019-11-08 | Rear bottom fork of wheel type power vehicle and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110682989A true CN110682989A (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911084627.9A Pending CN110682989A (en) | 2019-11-08 | 2019-11-08 | Rear bottom fork of wheel type power vehicle and manufacturing method thereof |
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| Country | Link |
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| CN (1) | CN110682989A (en) |
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| CN106314647A (en) * | 2016-08-24 | 2017-01-11 | 孙友国 | Rear flat fork |
| CN206049920U (en) * | 2016-08-22 | 2017-03-29 | 浙江奔宝车业有限公司 | A kind of chain stay of electric motor car |
| CN206537430U (en) * | 2017-02-27 | 2017-10-03 | 包永贵 | A kind of rear chain stay and rear chain stay safeguard construction |
| CN206766237U (en) * | 2017-02-27 | 2017-12-19 | 包永贵 | Chain stay after wheel driving force car |
| CN206938961U (en) * | 2017-02-27 | 2018-01-30 | 包永贵 | Chain stay after a kind of wheel driving force car |
| CN107878652A (en) * | 2017-10-19 | 2018-04-06 | 中航复材（北京）科技有限公司 | A kind of nonmetallic bicycle frame structure and its manufacture method |
| CN208429199U (en) * | 2018-07-07 | 2019-01-25 | 绿佳车业科技股份有限公司 | A kind of chain stay of electric vehicle |
| CN209176835U (en) * | 2018-12-12 | 2019-07-30 | 台州市中奇压铸有限公司 | A kind of rear bottom fork of electric vehicle |
| CN211391576U (en) * | 2019-11-08 | 2020-09-01 | 台州华锐电动科技股份有限公司 | Rear bottom fork of wheel type power vehicle |
-
2019
- 2019-11-08 CN CN201911084627.9A patent/CN110682989A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206049920U (en) * | 2016-08-22 | 2017-03-29 | 浙江奔宝车业有限公司 | A kind of chain stay of electric motor car |
| CN106314647A (en) * | 2016-08-24 | 2017-01-11 | 孙友国 | Rear flat fork |
| CN206537430U (en) * | 2017-02-27 | 2017-10-03 | 包永贵 | A kind of rear chain stay and rear chain stay safeguard construction |
| CN206766237U (en) * | 2017-02-27 | 2017-12-19 | 包永贵 | Chain stay after wheel driving force car |
| CN206938961U (en) * | 2017-02-27 | 2018-01-30 | 包永贵 | Chain stay after a kind of wheel driving force car |
| CN107878652A (en) * | 2017-10-19 | 2018-04-06 | 中航复材（北京）科技有限公司 | A kind of nonmetallic bicycle frame structure and its manufacture method |
| CN208429199U (en) * | 2018-07-07 | 2019-01-25 | 绿佳车业科技股份有限公司 | A kind of chain stay of electric vehicle |
| CN209176835U (en) * | 2018-12-12 | 2019-07-30 | 台州市中奇压铸有限公司 | A kind of rear bottom fork of electric vehicle |
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