CN201636238U - Automatic clutch centering structure of engine - Google Patents
Automatic clutch centering structure of engine Download PDFInfo
- Publication number
- CN201636238U CN201636238U CN2010201180600U CN201020118060U CN201636238U CN 201636238 U CN201636238 U CN 201636238U CN 2010201180600 U CN2010201180600 U CN 2010201180600U CN 201020118060 U CN201020118060 U CN 201020118060U CN 201636238 U CN201636238 U CN 201636238U
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- CN
- China
- Prior art keywords
- spline
- section
- automatic clutch
- right crank
- centering
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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 - Lifetime
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Abstract
An automatic clutch centering structure of an engine is characterized in that an automatic clutch combination body is sleeved on a right crank via a shaft sleeve, a journal section and a spline section are arranged on the right crank corresponding to the shaft sleeve, the diameter of the journal section is equal to the nominal diameter of spline major diameter of the spline section basically, the inner bore of the shaft sleeve consists of an unthreaded hole section and a spline hole section, the unthreaded hole section of the shaft sleeve is in clearance fit with the journal section of the right crank, and the spline hole section of the shaft sleeve is connected with the spline of the spline section of the right crank. The automatic clutch centering structure can separate centering function from torque transmission function easily, and is applicable to any spline hole and shaft matching structures with higher matching precision requirements. Centering and torque transmission are respectively realized by aid of the shaft and the hole which are in clearance fit and by aid of flank centering spline meeting internal standards, thereby realizing higher precision, and meeting rotation requirements of high-speed, high-precision and large-torque transmission. In addition, as matching holes and shafts and the flank centering spline meeting internal standards are low in processing difficulty, centering precision of parts can not be affected even when spline cutters are abraded in batch production, and then the automatic clutch centering structure is suitable for batch production.
Description
Technical field
The utility model belongs to technical field of engines, specifically, and the particularly adjective-centre structure of motor automatic clutch.
Background technique
At present, the crank-connecting rod of single cylinder dune buggy engine combination right-hand member generally all will be installed the combination of automatic clutch main body, to realize the automatic clutch function.Motor is in idling, and the power of bent axle can not be delivered to the major-minor axle.When the rotation throttle, increase accelerator open degree, when making speed of crankshaft surpass 2000r/min, the automatic and drive sprocket axle combined engagement of automatic clutch main body combination meeting is delivered to the moment of torsion of bent axle in the drive sprocket axle combination, is delivered to the major-minor axle by stepless speed variator again.Unclamp throttle, speed of crankshaft can be got back to idling mode rapidly, because idling speed is lower than 2000r/min, so the combination of automatic clutch main body can break away from the drive sprocket axle combination automatically, thereby cuts off the transmission of power, has realized the automatic clutch function.
When speed of crankshaft is got back to idling mode rapidly, because inertial force effect, have very big speed discrepancy between combination of automatic clutch main body and the drive sprocket axle combination, make automatic clutch main body combination counter-rotating relatively, therefore between combination of automatic clutch main body and drive sprocket axle combination, one-way element must be installed.
As mentioned above, the domestic general employing of Placement between automatic clutch main body combination and the right crank be the spline fitted of flank centering, external particularly Japan is general, and what adopt is the spline fitted of big footpath centering.The centering precision of flank centring type spline fitted is relatively poor, and the spline accuracy of manufacturing is had relatively high expectations, and installation back automatic clutch main body combination cylindrical is beated bigger, often causes the damage of one-way element, can't satisfy the revolution requirement of high speed, highi degree of accuracy, high pulling torque transmission.If adopt the spline fitted of big footpath centering, though centering precision is good, can satisfy the revolution requirement of high speed, highi degree of accuracy, high pulling torque transmission, but the domestic standard cutter that does not have the centering of big footpath, need nonstandard big footpath centering spline cutter customized, and the precise decreasing of spline after the tool wear, centering precision can descend thereupon, cause the damage of one-way element, can not satisfy the centering precision requirement of automatic clutch main body combination when producing in enormous quantities.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of motor automatic clutch adjective-centre structure, on the basis that does not change former motor automatic clutch structure, reduce the difficulty of processing of part, when producing in enormous quantities, satisfy the revolution requirement of high speed, highi degree of accuracy, high pulling torque transmission.
The technical solution of the utility model is as follows: a kind of motor automatic clutch adjective-centre structure, comprise right crank, the combination of automatic clutch main body, drive sprocket axle combination and one-way element, described automatic clutch main body combination is set on the right crank by the axle sleeve at its center, between axle sleeve and drive sprocket axle combination, be provided with one-way element, its key is: the position of corresponding axle sleeve is provided with axle journal section and spline segment on the described right crank, and the diameter of axle journal section equates substantially with the big footpath of the spline nominal diameter of spline segment; The endoporus of described axle sleeve is made up of unthreaded hole section and splined hole section, and the unthreaded hole section of described axle sleeve cooperates with the intersegmental crack of the axle journal of right crank, and the splined hole section of axle sleeve is connected with the spline segment spline of right crank.
Adopt above technological scheme, on the basis of the former splined shaft of right crank, shorten splined section, in one section of inboard increase of spline and the essentially identical engage journal of the big footpath of spline nominal diameter; On the basis of the former splined hole of described axle sleeve, increase the essentially identical unthreaded hole section of nominal diameter, the big footpath of the spline of splined hole section is by unthreaded hole section (be that axle sleeve is a spline housing, internal spline ground off one section form the unthreaded hole section); This unthreaded hole sector hole footpath cooperates with the intersegmental crack of the corresponding axle journal of right crank, has satisfied high-precision centering requirement; The splined hole section of described axle sleeve is connected with the corresponding axle journal section of right crank spline, and spline adopts the flank centering spline of GB, only plays driving torque.Can satisfy the revolution requirement of high speed, highi degree of accuracy, high pulling torque transmission by above two kinds of measures, and reduce the difficulty of processing of part.
Processing for convenience is provided with first annular groove between the axle journal section of described right crank and spline segment, be provided with second annular groove between the unthreaded hole section of described axle sleeve endoporus and the splined hole section.
Beneficial effect: the utility model is simple in structure, can improve on the basis of any original splined hole that higher quality of fit requirement arranged, axle cooperating structure.Only need to process the cooperation endoporus in original splined hole side of packing into; Only need shorten the spline length of original splined shaft,, can will feel relieved and the transmitting torque functional separation like a cork in one section of inboard increase of spline and the essentially identical engage journal of the big footpath of spline nominal diameter.Centering and transmitting torque rely on the flank centering spline of Spielpassung axle, hole and GB to realize respectively, quality of fit is very high, can satisfy the revolution requirement of high speed, highi degree of accuracy, high pulling torque transmission, the hole that cooperates is low with the flank centering spline difficulty of processing of axle and GB, the spline tool wear also can not influence the centering precision of part during production in enormous quantities, is well suited for producing in enormous quantities.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing of right crank in the utility model.
Fig. 3 is the structural representation of the utility model Intermediate shaft sleeve.
Fig. 4 is the left view of Fig. 3.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, the utility model is made up of parts such as right crank 1, automatic clutch main body combination 2, drive sprocket axle combination 4, one-way element 5 and needle bearings 6, described automatic clutch main body combination 2 is positioned at the disk of drive sprocket axle combination 4, and be set on the right crank 1 by the axle sleeve 2a at its center, lock by tightening nut.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the position of corresponding axle sleeve 2a is provided with axle journal section 1a and spline segment 1b on the described right crank 1, and the diameter of axle journal section 1a equates substantially with the big footpath of the spline nominal diameter of spline segment 1b, is provided with the first annular groove 1c between the axle journal section 1a of right crank 1 and spline segment 1b.The endoporus of described axle sleeve 2a is made up of unthreaded hole section 2a1 and splined hole section 2a2, and unthreaded hole sector hole footpath 2a1 is passed through in the big footpath of spline of axle sleeve 2a splined hole section 2a2, and is provided with the second annular groove 2b between unthreaded hole section 2a1 and the splined hole section 2a2.The axle journal section 1a Spielpassung of the unthreaded hole section 2a1 of described axle sleeve 2a and right crank 1, the size in gap are determined according to actual needs; The splined hole section 2a2 of axle sleeve 2a is connected with the spline segment 1b spline of right crank 1.
Because the Placement between combination 2 of automatic clutch main body and the right crank 1 is by an intersegmental crack engage journal centering, and connects driving torque by spline, will feel relieved like a cork and the transmitting torque functional separation.The utility model can be fit to any splined hole, axle cooperating structure that higher quality of fit requirement is arranged.This Placement can satisfy the revolution requirement of high speed, highi degree of accuracy, high pulling torque transmission, has reduced the difficulty of processing of part simultaneously.When right crank 1 rotating speed reaches 2000 ± 200r/min, the time, the combination 2 of automatic clutch main body engages with drive sprocket axle combination 4, the moment of torsion of bent axle is delivered to drive sprocket axle makes up on 4.Described automatic clutch main body combination 2 is made of parts such as axle sleeve 2a, spring and friction hoof pieces 3, be bonded with friction material on the friction hoof piece 3 of automatic clutch main body combination 2, it is same as the prior art that the automatic clutch main body makes up the structure and the Placement of 2 each several parts, do not do at this and give unnecessary details.Prior art is also adopted in described drive sprocket axle combination 4, and its structure is not done at this yet and given unnecessary details.
As can be known from Fig. 1, between right crank 1 end and the drive sprocket axle combination 4 needle bearing 6 has been installed.Between the axle sleeve 2a of automatic clutch main body combination 2 and the drive sprocket axle combination 4 one-way element 5 is installed.When motor when starting to walk to quicken, this one-way element 5 is not worked; When motor slows down suddenly, right crank 1 slows down immediately, automatic clutch main body combination 2 is slowed down immediately, inertial force still runs up drive sprocket axle combination 4, this moment, one-way element 5 worked, make drive sprocket axle combination 4 and automatic clutch main body make up 2 run-in synchronisms, prevent the friction material inordinate wear on the friction hoof piece 3 that the high speed discrepancy of drive sprocket axle combination 4 and automatic clutch main body combination 2 causes.
Claims (2)
1. motor automatic clutch adjective-centre structure, comprise right crank (1), automatic clutch main body combination (2), drive sprocket axle combination (4) and one-way element (5), described automatic clutch main body combination (2) is set on the right crank (1) by the axle sleeve (2a) at its center, between axle sleeve (2a) and drive sprocket axle combination (4), be provided with one-way element (5), it is characterized in that: the position that described right crank (1) is gone up corresponding axle sleeve (2a) is provided with axle journal section (1a) and spline segment (1b), and the diameter of axle journal section (1a) equates substantially with the big footpath of the spline nominal diameter of spline segment (1b); The endoporus of described axle sleeve (2a) is made up of unthreaded hole section (2a1) and splined hole section (2a2), axle journal section (1a) Spielpassung of the unthreaded hole section (2a1) of described axle sleeve (2a) and right crank (1), the splined hole section (2a2) of axle sleeve (2a) is connected with spline segment (1b) spline of right crank (1).
2. motor automatic clutch adjective-centre structure according to claim 1, it is characterized in that: between the axle journal section (1a) of described right crank (1) and spline segment (1b), be provided with first annular groove (1c), be provided with second annular groove (2b) between the unthreaded hole section (2a1) of described axle sleeve (2a) endoporus and the splined hole section (2a2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201180600U CN201636238U (en) | 2010-02-24 | 2010-02-24 | Automatic clutch centering structure of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201180600U CN201636238U (en) | 2010-02-24 | 2010-02-24 | Automatic clutch centering structure of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201636238U true CN201636238U (en) | 2010-11-17 |
Family
ID=43080730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201180600U Expired - Lifetime CN201636238U (en) | 2010-02-24 | 2010-02-24 | Automatic clutch centering structure of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201636238U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798952B (en) * | 2010-02-24 | 2012-05-23 | 力帆实业(集团)股份有限公司 | Automatic clutch and right crank assembly of dune buggy engine |
| CN114233742A (en) * | 2021-12-16 | 2022-03-25 | 北京动力机械研究所 | Segmented shaft transmission structure based on flexible spline connection |
-
2010
- 2010-02-24 CN CN2010201180600U patent/CN201636238U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798952B (en) * | 2010-02-24 | 2012-05-23 | 力帆实业(集团)股份有限公司 | Automatic clutch and right crank assembly of dune buggy engine |
| CN114233742A (en) * | 2021-12-16 | 2022-03-25 | 北京动力机械研究所 | Segmented shaft transmission structure based on flexible spline connection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101117 Effective date of abandoning: 20120523 |