CN101798952A - Automatic clutch and right crank assembly of dune buggy engine - Google Patents
Automatic clutch and right crank assembly of dune buggy engine Download PDFInfo
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- CN101798952A CN101798952A CN201010113440A CN201010113440A CN101798952A CN 101798952 A CN101798952 A CN 101798952A CN 201010113440 A CN201010113440 A CN 201010113440A CN 201010113440 A CN201010113440 A CN 201010113440A CN 101798952 A CN101798952 A CN 101798952A
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- spline
- right crank
- section
- automatic clutch
- combination
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Abstract
The invention discloses an automatic clutch and right crank assembly of a dune buggy engine. An automatic clutch main body assembly is sleeved on a right crank through a shaft sleeve, the position on the right crank corresponding to the shaft sleeve is provided with a shaft neck section and a spline section, and the diameter of the shaft neck section is basically equal to the nominal diameter of the major diameter of a spline of the spline section; and an inner hole 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 shaft neck 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 assembly can easily separate the functions of centering and torque transfer, and is suitable for any spline hole and shaft matched structure with higher matching precision requirement. The centering and the torque transfer are realized by means of a shaft, a hole and a gear side centering spline in clearance fit; the matching precision is high and can meet the rotation requirement of high-speed, high-precision and large-torque transfer; the matched hole and shaft and the national standard gear side centering spline have low machining difficulty; and during mass production, the abrasion of a spline cutter does not affect the centering precision of parts, so the assembly is suitable for mass production.
Description
Technical field
The invention belongs to the dune buggy engine technical field, specifically, particularly motor automatic clutch and right crank combination.
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.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of dune buggy engine automatic clutch and the combination of right crank, 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.
Technological scheme of the present invention is as follows: a kind of dune buggy engine automatic clutch and the combination of right crank, 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 present invention 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 invention.
Fig. 2 is the partial enlarged drawing of right crank among the present invention.
Fig. 3 is the structural representation of Intermediate shaft sleeve of the present invention.
Fig. 4 is the left view of Fig. 3.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1, the present invention 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 present invention 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. a dune buggy engine automatic clutch and right crank combination, 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. dune buggy engine automatic clutch according to claim 1 and the combination of right crank, 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 |
|---|---|---|---|
| CN201010113440XA CN101798952B (en) | 2010-02-24 | 2010-02-24 | Automatic clutch and right crank assembly of dune buggy engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010113440XA CN101798952B (en) | 2010-02-24 | 2010-02-24 | Automatic clutch and right crank assembly of dune buggy engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101798952A true CN101798952A (en) | 2010-08-11 |
| CN101798952B CN101798952B (en) | 2012-05-23 |
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ID=42594770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010113440XA Expired - Fee Related CN101798952B (en) | 2010-02-24 | 2010-02-24 | Automatic clutch and right crank assembly of dune buggy engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101798952B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1442362A (en) * | 1973-12-17 | 1976-07-14 | Brown Tractors Ltd | Power take-off shaft assembly |
| JP5186118B2 (en) * | 2006-03-14 | 2013-04-17 | 川崎重工業株式会社 | Multi-plate friction clutch and motorcycle |
| CN201636238U (en) * | 2010-02-24 | 2010-11-17 | 力帆实业(集团)股份有限公司 | Automatic clutch centering structure of engine |
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2010
- 2010-02-24 CN CN201010113440XA patent/CN101798952B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101798952B (en) | 2012-05-23 |
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Granted publication date: 20120523 Termination date: 20200224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |