CN202686675U - Rear flat fork of electric vehicle - Google Patents
Rear flat fork of electric vehicle Download PDFInfo
- Publication number
- CN202686675U CN202686675U CN 201220410201 CN201220410201U CN202686675U CN 202686675 U CN202686675 U CN 202686675U CN 201220410201 CN201220410201 CN 201220410201 CN 201220410201 U CN201220410201 U CN 201220410201U CN 202686675 U CN202686675 U CN 202686675U
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- CN
- China
- Prior art keywords
- grip block
- holes
- hole
- electric vehicle
- clamping blocks
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- 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.)
- Expired - Fee Related
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Abstract
A rear flat fork of an electric vehicle comprises rear flat fork arms of the electric vehicle, and clamping blocks, wherein each clamping block which is stretched backwards and fixed is processed at the rear end of each rear flat fork arm, a through hole is installed in front of each clamping block, another through hole is installed behind each clamping block, the axes of the through holes are vertical, and the nearest distance between the front through hole and the rear through hole of the same clamping block is larger than the diameter of a motor shaft. A movable clamping block is positioned on one side of each fixed clamping block in the vertical direction, each movable clamping block is provided with two through holes which have the vertical axes, and the through holes of the movable clamping blocks can be aligned to the through holes of the fixed clamping blocks. The fixed clamping blocks are connected with the movable clamping blocks through bolts penetrating through the through holes of the fixed clamping blocks and the movable clamping blocks, and the distances between the fixed clamping blocks and the movable clamping blocks can be adjusted after the bolts are screwed into nuts.
Description
Affiliated technical field
The utility model relates to a kind of rear bottom fork of electric vehicle, belongs to the electric vehicle and bicycle field.
Background technology
At present, the hub-type motor is widely used at Electrical Bicycle and battery-operated motor cycle, and it is by on the rear flat fork device that motor shaft is installed in motor, realization driving Vehicle Driving Cycle.But be used for fixing the draw-in groove of motor shaft at present on the chain stay, the termination of the rear chain stay arm of making at rectangular tube often is made by direct punching press; Or the termination of the rear chain stay arm of oval steel pipe manufacturing weldering lastblock in advance the steel plate of made groove be made.The wheel hub motor axle is to be spun on the screw thread of motor shaft fixing with rear chain stay termination clamping sides by nut.The shortcoming of this design is, because draw-in groove is opening, and exists the gap between motor shaft and draw-in groove, the draw-in groove opening in use easily occurs open change and greatly, finally cause the fixing problem incessantly of motor shaft.
Summary of the invention
The shortcoming of easily opening for the draw-in groove that is used for fixing motor shaft on the rear chain stay, a kind of new rear chain stay technical scheme is now proposed, clamp respectively two planes of axle with two grip blocks in each arm rear end of rear chain stay, tighten up two grip blocks with bolt, thus two plane close contacts that make grip block and motor shaft fixed electrical machinery axle firmly.
The technical scheme that its technical matters that solves the utility model adopts is: each the arm rear end at rear chain stay respectively is shaped with a grip block that stretches out backward, each makes a call to a hole that axis is vertical before and after on grip block, and the closest range between two holes, same grip block front and back is greater than the motor shaft diameter; One side of fixed clamp piece vertical direction (above or below), a mobilizable grip block is arranged, on the grip block of activity, also be drilled with two through holes that axis is vertical, and can align with the hole on the fixing fixture block in these two holes.Place motor shaft between grip block and be positioned between two holes, then bolt is penetrated in the hole, screw on nut (also can in two holes of a grip block, process respectively the metric system negative thread and replace nut), tightening bolt dwindles the distance of fixed clamp piece and movable grip block motor shaft is clamped, make two parallel planes and the grip block close contact of motor shaft, motor shaft just is held piece and has firmly clamped like this.
The beneficial effects of the utility model are, make two parallel planes and the grip block close contact of motor shaft, and motor shaft can not become flexible.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the lateral plan of the rear bottom fork of electric vehicle of movable grip block below the fixed clamp piece;
Fig. 2 is the top view of rear bottom fork of electric vehicle;
Fig. 3 is the side schematic view after rear chain stay is loaded onto the hub-type motor;
Fig. 4 is that rear chain stay is loaded onto the scheme drawing of seeing from behind behind the hub-type motor;
Fig. 5 is the rear chain stay side schematic view of movable grip block above the fixed clamp piece.
1. rear chain stay arms among the figure, 2. fixed clamp piece, 3. movable grip block, the 4. axle of hub-type motor, 5. bolt, 6. nut, 7. hub-type motor, the 8. hole on the grip block.
The specific embodiment
Fig. 1 is the lateral plan of the rear bottom fork of electric vehicle of movable grip block below the fixed clamp piece, Fig. 2 is the top view of rear chain stay, the rear end of each rear chain stay arm (1) is shaped with a fixing grip block (2) among the figure, all is drilled with the hole (8) that communicates up and down before and after fixed clamp piece (2) is upper; There is the grip block (3) of an activity on one side of the vertical direction of grip block, is drilled with two through holes that axis is vertical at the grip block of activity, and aligns with the hole on the fixing fixture block in these two holes.The minor increment of front and rear gaps should be greater than the diameter of motor shaft, so that motor can the front and back adjusting position on the grip block.
Fig. 3 is that motor is assemblied in the side schematic view on the rear chain stay, Fig. 4 is that motor is assemblied in the back view on the rear chain stay, the axle (4) of wheel hub motor among the figure (7) places between fixed clamp piece and the movable grip block and places between the grip block front and rear gaps (8), the fixed clamp piece is connected by the bolt that is through in the two hole with movable grip block, can regulate the distance between fixed clamp piece and the movable grip block behind the bolt screw-in nut, namely in front and rear gaps, all penetrate the bolt (5) of suitable size, then the threaded end at bolt screws on nut (6), front and back regulating electric machine axle is to suitable position, the suitable nut that firmly tightens up, bolt, distance between fixture block is dwindled, just can make grip block firmly clamp motor shaft.Above-mentioned bolt is spun on the nut and tightens up, and also can process the metric thread that matches with used bolt to replace nut in the hole of a certain grip block, can tighten up equally grip block and clamp motor shaft.
Fig. 5 is the rear chain stay side schematic view of movable grip block above the fixed clamp piece.The difference of itself and Fig. 1 is that the upper-lower position of movable grip block and fixed clamp piece has been changed, and other parts are identical.
Claims (3)
1. rear bottom fork of electric vehicle, comprise the rear chain stay arm of battery-driven car and respectively be shaped with a fixing grip block that stretches out backward in each arm rear end of rear chain stay two arms, it is characterized in that: each makes a call to a through hole that axis is vertical in the front and back of grip block, and the closest range between two holes, same grip block front and back is greater than the motor shaft diameter.
2. rear bottom fork of electric vehicle according to claim 1, it is characterized in that: one side the fixed clamp piece vertical direction of stretching out backward in each arm rear end of rear chain stay has a mobilizable grip block, grip block in activity has two through holes that axis is vertical, and can align with the hole on the fixing fixture block in these two holes.
3. rear bottom fork of electric vehicle according to claim 1, it is characterized in that: the fixed clamp piece is connected by the bolt that is through in the two hole with movable grip block, and bolt screws in the distance that can regulate behind the nut between fixed clamp piece and the movable grip block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220410201 CN202686675U (en) | 2012-08-08 | 2012-08-08 | Rear flat fork of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220410201 CN202686675U (en) | 2012-08-08 | 2012-08-08 | Rear flat fork of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202686675U true CN202686675U (en) | 2013-01-23 |
Family
ID=47542330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220410201 Expired - Fee Related CN202686675U (en) | 2012-08-08 | 2012-08-08 | Rear flat fork of electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202686675U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104554601A (en) * | 2013-10-18 | 2015-04-29 | 无锡爱奇克发动机有限公司 | Bottom fork and motor connection structure of electric bicycle |
| JP2020006751A (en) * | 2018-07-04 | 2020-01-16 | ブリヂストンサイクル株式会社 | Electric vehicle |
-
2012
- 2012-08-08 CN CN 201220410201 patent/CN202686675U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104554601A (en) * | 2013-10-18 | 2015-04-29 | 无锡爱奇克发动机有限公司 | Bottom fork and motor connection structure of electric bicycle |
| JP2020006751A (en) * | 2018-07-04 | 2020-01-16 | ブリヂストンサイクル株式会社 | Electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20140808 |
|
| EXPY | Termination of patent right or utility model |