CN207297816U - A kind of correction timing sprocket certainly - Google Patents
A kind of correction timing sprocket certainly Download PDFInfo
- Publication number
- CN207297816U CN207297816U CN201721155382.0U CN201721155382U CN207297816U CN 207297816 U CN207297816 U CN 207297816U CN 201721155382 U CN201721155382 U CN 201721155382U CN 207297816 U CN207297816 U CN 207297816U
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- CN
- China
- Prior art keywords
- sprocket
- wheel hub
- block piece
- piece
- correction timing
- 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.)
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Abstract
The utility model discloses a kind of from correction timing sprocket, including wheel hub and the sprocket being circumferentially provided on wheel hub, it is provided with one side end face of the wheel hub and passes through casting integrated molding first block piece with wheel hub, opposite side is arranged with the second block piece, the side of first block piece and the second block piece towards sprocket offers limiting slot, and corrective piece is provided with the limiting slot；The utility model can voluntarily correct engaging for chain and sprocket wheel, improve the degree of engagement of timing sprocket and chain, reduce the abrasion of sprocket, thereby reduce the risk of chain skidding.
Description
Technical field
A kind of mechanical transmission part is the utility model is related to, more particularly to applied to a kind of from correction timing on motorcycle
Sprocket wheel.
Background technology
The engine of motorcycle is to complete the connection between bent axle and camshaft by timing system in the process of running
Come what is driven.In Modern Engine in use, timing system more and more uses chain transmission system, its height it is reliable
Property, accuracy can meet Modern Engine to distribution precision increasingly higher demands.
As shown in Figure 1, existing timing sprocket includes wheel hub 1, it is circumferentially provided with the wheel hub 1 and is meshed with timing chain
Sprocket 11.Engine is in transport process, and the axial float of bent axle can make it that chain is non-coplanar with wheel hub on motorcycle, if
In motorcycle driving there are larger when jolting, it can make it that sprocket and engaging for timing chain are undesirable, and then cause chain
Jump in the axial direction of sprocket wheel.
Utility model content
The purpose of this utility model is to provide a kind of correction timing sprocket certainly, which solves timing sprocket of the prior art
The problem of axial jump, easily occurs for chain when being engaged with chain.
The above-mentioned technical purpose of the utility model technical scheme is that：
It is a kind of from correction timing sprocket, including wheel hub and the sprocket that is circumferentially provided on wheel hub, the one of the wheel hub
It is provided with side end face with wheel hub by casting integrated molding first block piece, opposite side is arranged with the second block piece, described
The side of first block piece and the second block piece towards sprocket offers limiting slot, and correction is provided with the limiting slot
Part.
Using the above scheme, motorcycle is in ride, and timing sprocket is with jolting for motorcycle and engaging for chain
Offset is produced, the first block piece and the second block piece are used for the disengaging that chain clamping lock is prevented to chain and sprocket wheel on wheel hub,
Corrective piece corrects chain when axial jump occurs for chain, improves the degree of engagement of chain and sprocket wheel.In addition, the first resistance
Block piece is wholely set with wheel hub, adds the fastness between the first block piece and wheel hub so that the stop of the first block piece is made
With more in place.Second block piece is set in the opposite side of wheel hub, easy to the installation and removal of chain.
More preferably：The corrective piece is rubber ring, and a part for the rubber ring is embedded by interference fit
In limiting slot, another part is protruded outside limiting slot.
Using the above scheme, rubber ring has elasticity, and when axial jump occurs for chain and sprocket wheel, chain is supported with rubber ring
Connect so that elastic deformation occurs for rubber ring；Elastically-deformable rubber ring corrects chain when resetting, and then adds chain
With the degree of engagement of sprocket.
More preferably：The corrective piece is ball, and a part for the ball is embedded by interference fit
In limiting slot, another part is protruded outside limiting slot.
Using the above scheme, ball has elasticity, and when axial jump occurs for chain and sprocket wheel, chain is supported with ball
Connect so that elastic deformation occurs for ball；Elastically-deformable ball corrects chain when resetting, and then adds chain
With the degree of engagement of sprocket.In addition, ball and chain are point contact, reduce both contact area, reduce chain and rectify
The abrasion of timing, adds the service life of sprocket wheel.
More preferably：First block piece and the second block piece are smooth excessively with wheel hub.
Using the above scheme, when the sprocket on chain and wheel hub all departs from, smooth the first excessive block piece and
The dust stratification that second block piece is easy to fall in sprocket wheel is oriented to along shiny surface discharges, and reduces impurity and is accumulated on sprocket wheel, and then
Reduce the abrasion of sprocket wheel and chain.
More preferably：The inner wall of first block piece is provided with guide surface to the inclined of wheel hub.
Using the above scheme, it is necessary to when installing or substituting sprocket wheel, the guide surface that is obliquely installed, which first penetrates to coordinate with sprocket wheel, to be made
Bent axle, then pushes to required installation position by sprocket wheel again.Guiding role is played in installation of the guide surface to sprocket wheel, accelerates
The handling of sprocket wheel, add the work efficiency of sprocket wheel replacement.
More preferably：The wheel hub is outward extended with fixing piece along its inside edge, and second block piece is arranged
It is interference fitted on fixing piece and with fixing piece and connects.
Using the above scheme, the second block piece is set in the surface of fixing piece so that the installation of the second block piece and wheel hub
It is more firm, strengthen barrier effect of second block piece to chain；Interference fit is easy to the handling of the second block piece, if chain
When breaking down or damaging, the second block piece can quickly depart from from fixing piece, easy to the handling of chain.
More preferably：The outer circumferential surface of the fixing piece offers cricoid first annular groove, second block piece
Inner peripheral surface is provided with the second annular groove, and first annular groove and the second ring groove shape are embedded with sealing ring into ring cavity in the ring cavity.
Using the above scheme, a sealing ring part is embedded in fixing piece, and another part is embedded in the second block piece, with
Fixing piece and the second block piece play positioning action, add the fastness of the second block piece and fixing piece so that second stops
Part more in place, and then adds the stability of sprocket wheel entirety to the barrier effect of chain.
More preferably：The teeth groove both sides of the sprocket are provided with guide groove, footpath of the guide groove along wheel hub
To evenly distributed, its one end is connected with the teeth groove of sprocket, and the other end is abutted with wheel hub.
Using the above scheme, the engaged transmission of timing sprocket and chain needs to add suitable machine oil to reduce abrasion, viscous
Thick machine oil is adhered on sprocket the impurity such as the dust outside sprocket wheel, produces abrasion to sprocket, guide groove is easy to impurity
Guiding discharge, reduce impurity accumulated on sprocket.
In conclusion the utility model has the advantages that：
By the setting of the first block piece and the second block piece, prevent chain that axial dystopy occurs on timing sprocket, the
The chain to jump is corrected in the setting of one corrective piece and the second corrective piece, improves engaging for timing sprocket and chain
Degree, reduces the abrasion of sprocket, thereby reduces the risk of chain skidding；Guide groove reduces heap of the impurity on sprocket
Product, increases the wearability of sprocket, prolongs the service life.
Brief description of the drawings
Fig. 1 is the structure diagram of timing sprocket in the prior art；
Fig. 2 is the structure diagram from correction timing sprocket of embodiment one；
Fig. 3 is the exploded perspective view from correction timing sprocket of embodiment one；
Fig. 4 is the internal structure schematic diagram from correction timing sprocket of embodiment one；
Fig. 5 is the structure diagram from correction timing sprocket of embodiment two.
In figure, 1, wheel hub；2nd, the first block piece；3rd, the second block piece；4th, ring cavity；5th, sealing ring；6th, limiting slot；7th, rubber
Ring；8th, ball；11st, sprocket；111st, teeth groove；112nd, guide groove；12nd, fixing piece；121st, the first annular groove；21st, guide surface；
31st, the second annular groove.
Embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment one：
It is a kind of from correction timing sprocket, as shown in Fig. 2, including wheel hub 1, positioned at 1 both sides of wheel hub the first block piece 2 and
Second block piece 3.Wherein, the first block piece 2 is integrally formed by casting with wheel hub 1, and the second block piece 3 is set in wheel hub 1
Opposite side, and the first block piece 2 and the second block piece 3 are smooth excessively with wheel hub 1.
As shown in Figure 3 and Figure 4, wheel hub 1 is cylindrical, is circumferentially evenly arranged with some sprockets 11, and the one of wheel hub 1 is lateral
Also it is extended with a cricoid fixing piece 12 outside.A teeth groove 111 is formed between two sprockets 11, the both sides of teeth groove 111 are respectively opened
Equipped with a smooth guide groove 112.Radially uniform arrangement of the guide groove 112 along wheel hub 1, its one end and the tooth of sprocket 11
Groove 111 connects, and the other end is abutted with wheel hub 1, to help the guiding discharge on impurity accessary sprocket wheel tooth 11.
First block piece 2 is annular in shape, is arranged on side of the wheel hub 1 away from fixing piece 12.First block piece 2 and sprocket 11
It is arranged at intervals, its side away from sprocket 11 is provided with a cricoid guide surface 21, and guide surface 21 is towards the center of wheel hub 1
Axis is obliquely installed.
Second block piece 3 is annular in shape, and the outside of fixing piece 12 is set in by interference fit.Wherein, fixing piece 12 is outer
Side face offers cricoid first annular groove 121, and the inner peripheral surface of the second block piece 3 offers a second annular annular groove 31, the
One annular groove 121 and the second annular groove 31 form a ring cavity 4, a sealing ring 5 are embedded with ring cavity 4, to reinforce the second block piece 3
With the stability of the second block piece 3.
First block piece 2 and the second block piece 3 circumferentially offered towards the side of sprocket 11 one it is cricoid spacing
Groove 6, is embedded with a rubber ring 7 by interference fit in limiting slot 6.Wherein, 7 part of rubber ring is embedded in limiting slot 6
In, another part is protruded in the outside of limiting slot 6.
When timing chain wheel and rack engages, the first block piece 2 and the second block piece 3 are spacing therebetween by chain, rubber
Rubber ring 7 corrects the chain that axial jump occurs, to meet fully engaging for chain and timing sprocket.
Embodiment two：As shown in figure 5, it is with the difference of embodiment one, the first block piece 2 and the second block piece 3
Some spherical limiting slots 6 are circumferentially uniformly provided with towards the side of sprocket 11, in limiting slot 6 interference be embedded with a rubber
Glueballs 8.Wherein, 8 part of ball is embedded in limiting slot 6, and another part is protruded in the outside of limiting slot 6.
This specific embodiment is only explanation to the utility model, it is not the limitation to the utility model, ability
Field technique personnel as needed can make the present embodiment the modification of no creative contribution after this specification is read, but
As long as within the protection scope of the present utility model all protected be subject to Patent Law.
Claims (8)
- It is 1. a kind of from correction timing sprocket, including wheel hub（1）And it is circumferentially provided on wheel hub（1）On sprocket（11）, it is special Sign is：The wheel hub（1）A side end face on be provided with and wheel hub（1）Pass through casting integrated molding first block piece（2）, separately Side is arranged with the second block piece（3）, first block piece（2）With the second block piece（3）Towards sprocket（11）Side Offer limiting slot（6）, the limiting slot（6）In be provided with corrective piece.
- 2. it is according to claim 1 a kind of from correction timing sprocket, it is characterized in that：The corrective piece is rubber ring（7）, institute State rubber ring（7）A part by interference fit be embedded in limiting slot（6）In, another part is protruded in limiting slot（6）Outside.
- 3. it is according to claim 1 a kind of from correction timing sprocket, it is characterized in that：The corrective piece is ball（8）, institute State ball（8）A part by interference fit be embedded in limiting slot（6）In, another part is protruded in limiting slot（6）Outside.
- 4. it is according to claim 1 a kind of from correction timing sprocket, it is characterized in that：First block piece（2）With second Block piece（3）And wheel hub（1）It is smooth excessive.
- 5. it is according to any one of claims 1 to 4, a kind of from correction timing sprocket, it is characterized in that：Described first stops Part（2）Inner wall to wheel hub（1）Inclined be provided with guide surface（21）.
- 6. it is according to claim 1 a kind of from correction timing sprocket, it is characterized in that：The wheel hub（1）Along its inside edge It is outward extended with fixing piece（12）, second block piece（3）It is set in fixing piece（12）Upper and and fixing piece（12）Interference is matched somebody with somebody Close connection.
- 7. it is according to claim 6 a kind of from correction timing sprocket, it is characterized in that：The fixing piece（12）Outer circumferential surface open Equipped with cricoid first annular groove（121）, second block piece（3）Inner peripheral surface be provided with the second annular groove（31）, described first Annular groove（121）With the second annular groove（31）Form ring cavity（4）, the ring cavity（4）In be embedded with sealing ring（5）.
- 8. it is according to any one of claims 1 to 4, a kind of from correction timing sprocket, it is characterized in that：The sprocket （11）Teeth groove（111）Both sides are provided with guide groove（112）, the guide groove（112）Along wheel hub（1）Radially uniform row Row, its one end and sprocket（11）Teeth groove（111）Connection, the other end and wheel hub（1）Abut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721155382.0U CN207297816U (en) | 2017-09-09 | 2017-09-09 | A kind of correction timing sprocket certainly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721155382.0U CN207297816U (en) | 2017-09-09 | 2017-09-09 | A kind of correction timing sprocket certainly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207297816U true CN207297816U (en) | 2018-05-01 |
Family
ID=62446776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721155382.0U Expired - Fee Related CN207297816U (en) | 2017-09-09 | 2017-09-09 | A kind of correction timing sprocket certainly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207297816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332299A (en) * | 2019-05-08 | 2019-10-15 | 杭州九钻机械有限公司 | A kind of low abrasion low-noise chainwheel |
-
2017
- 2017-09-09 CN CN201721155382.0U patent/CN207297816U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332299A (en) * | 2019-05-08 | 2019-10-15 | 杭州九钻机械有限公司 | A kind of low abrasion low-noise chainwheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 Termination date: 20190909 |