CN102374276A - Transmission shaft device - Google Patents
Transmission shaft device Download PDFInfo
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- CN102374276A CN102374276A CN2010102606499A CN201010260649A CN102374276A CN 102374276 A CN102374276 A CN 102374276A CN 2010102606499 A CN2010102606499 A CN 2010102606499A CN 201010260649 A CN201010260649 A CN 201010260649A CN 102374276 A CN102374276 A CN 102374276A
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Abstract
The invention relates to a transmission shaft device. The device comprises a key shaft, a transmission piece which is sleeved with the key shaft along an axis, and a plurality of rolling bolt key groups, wherein a plurality of semicircular grooves are formed on the outer surface of the key shaft; a plurality of second semicircular grooves are formed on the inner surface of the transmission piece; and the rolling bolt key groups pass through the first semicircular grooves and the second semicircular grooves respectively and are provided with at least one cylindrical key and at least one rolling ball which are arranged along a direction parallel to the axis respectively. Thus, by using the characteristic that the semicircular grooves are convenient to process and the mode in which the rolling balls can be easily arranged, required transmission torque can be maintained under the key coupling effect of the cylindrical key and the smoothness in a sliding process can be improved under the rolling effect of the rolling ball, so that the aims of simplifying a process, reducing wear and improving precision are fulfilled.
Description
Technical field
The present invention relates to a kind of transmission shaft, particularly relate to a kind of driveline that is used for transferring power.
Background technique
Consulting Fig. 1, is example with general transmission shaft 1, consists predominantly of a key axle 11 that extends along an axis X direction, and a driving component 12.This key axle 11 is to receive a drive power source and rotate, and has around this axis X and be formed on a plurality of bolt keys 111 of an outer surface.This driving component 12 have along this axis X run through and with an axis hole 121 of these driving component 12 fits, and be formed on an internal surface and with the involutory a plurality of crozes 122 of this bolt key 111.Whereby, through the relationship in a mutual action of aforementioned bolt key 111, make this driving component 12 and this key axle 11 form interlock, and allow this driving component 12 or this key axle 11 to move along this axis X with aforementioned croze 122.
Generally speaking; Aforementioned bolt key 111 is formed in the outer surface of this key axle 11; Processing mode is unrestricted, and therefore, the be shaped processing method of aforementioned bolt key 111 of general industry has a lot; Like gear hobbing, cutting, roll flute processing ... Deng, usually also can both select optimal processing method according to factors such as the structure of assembly, material, heat treatment, required precisions.
Consult Fig. 1, Fig. 2, yet, because aforementioned croze 122 is formed in this driving component 12 internal surfaces; And has a degree of depth along vertical this axis X direction; Therefore, even do not consider the restriction whether aperture of this axis hole 121 enough supplies a workpiece 2 (like hobcutter, grinding cutter, milling cutter) to get into, list is discussed with the processing mode of this workpiece 2; The capital is because this workpiece 2 is to be the center turn with an axis Y; So that do not have to drive this workpiece 2 to can reaching through the driving element that this axis hole 121 maybe can pass this driving component 12 for a short time, so this mode also is not suitable for the aforementioned croze 122 that is shaped. at all
According to aforementioned, at present industry all be utilize a broaching tool of a broaching machine (figure does not show) along this axis X through this axis hole 121, and the broaching internal surface forms aforementioned croze 122, yet, the costing an arm and a leg of broaching machine, and the about 0.02mm of each bite of broaching, workload is little.The croze 122 of aforementioned again rectangle or involute is easy to after heat treatment, produce distortion, therefore; The dealer have to carry out precision processing to this key axle 11, and what make that this key axle 11 and this driving component 12 can precision cooperates this following process; But make centre of sphere precision (out of roughness) variation of this key axle 11 and this driving component 12, not only procedure is numerous and diverse, slow, and can't between machining accuracy and processing cost, obtain Economy; Once required precision descends, just rock easily, reach shortcomings such as producing noise.
Consult Fig. 3, a kind of ball type transmission shaft 3 arranged on the market in addition, consist predominantly of along axis X direction extend and each other fit key axle 31 and a driving component 32, form a retainer 33 of interlocks with this driving component 32, reach a plurality of balls 34.This key axle 31 and this driving component 32 have a plurality of arc grooves 311,321 that are formed on an outer surface and an internal surface and supply aforementioned a plurality of ball 34 to insert respectively.This retainer 33 has a plurality of holes 331 of aforementioned ball 34 of polyphone and spacing aforementioned ball 34.Whereby, through the snap-fit relationship of aforementioned ball 34, make this driving component 32 and this key axle 31 form interlock, and allow this driving component 32 or this key axle 31 to move along this axis X with aforementioned arc groove 311,321.
Yet, because aforementioned ball 34 is a state that contacts and be used for freely rotating with this key axle 31,32 of this driving components, therefore; Must set up this retainer 33 again, just can keep the stability of aforementioned ball 34, and improve whole moment of torsion; Not only assembly is more, and can promote the complexity when installing.
This shows that above-mentioned existing transmission shaft obviously still has inconvenience and defective, and demands urgently further improving in structure and use.Therefore how to found a kind of driveline of new structure, also becoming the current industry utmost point needs improved target.
Summary of the invention
The objective of the invention is to; Overcome the defective that existing transmission shaft exists; And a kind of driveline of new structure is provided, technical problem to be solved is to make it that a kind of driving torque that can promote is provided, and between machining accuracy and processing cost, obtains the driveline of an economic benefit.
The object of the invention and solve its technical problem and adopt following technological scheme to realize.A kind of driveline according to the present invention proposes wherein comprises: a key axle has around an axis and is formed on a plurality of first half slots of an outer surface; A driving component closes along this axis and this key axle sleeve, and has around this axis and be formed on a plurality of second half slots of an internal surface; And a plurality of rolling bolt key groups, be set in respectively between this first half slot and this second half slot, and have respectively and along at least one round key and at least one ball of parallel this axial direction arrangement.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
Aforesaid driveline, the ball of wherein said each rolling bolt key group is total a plurality of.
Aforesaid driveline, wherein said ball is arranged in the both sides of this round key respectively.
Aforesaid driveline also includes two bounding meanss, and wherein said bounding means is used for spacing aforementioned rolling bolt key group, makes aforementioned rolling bolt key group slide against this key axle with this driving component.
Aforesaid driveline; Wherein said driving component also has an annular groove that is formed on this internal surface and a contiguous end; And a thread section of the contiguous the other end, aforementioned bounding means is respectively a C shape latch closure and a collar nut, and this C shape latch closure is embedded in this annular groove and is blocked in aforementioned rolling bolt key group one side; The thread section of this collar nut and this driving component screws togather, and compels to be against aforementioned rolling bolt key group opposite side.
The present invention compared with prior art has tangible advantage and beneficial effect.Know by above,, the invention provides a kind of driveline, comprise a key axle, a driving component for achieving the above object, and a plurality of rolling bolt key groups.This key axle has around an axis and is formed on a plurality of first half slots of an outer surface.This driving component closes along this axis and this key axle sleeve, and has around this axis and be formed on a plurality of second half slots of an internal surface.Aforementioned rolling bolt key group is set in respectively between this first half slot and this second half slot, and at least one round key and at least one ball that have respectively and arrange along parallel this axial direction.
By technique scheme, driveline of the present invention has advantage and beneficial effect at least: effect of the present invention is to utilize the characteristic of the convenient processing of half slot, and mode that can simple and easy configuration ball; Bonding interaction with aforementioned round key; Keep required driving torque, reach rolling effect, the smoothness when promoting slippage with aforementioned ball; And then reach and simplify technology, reduce wear, improve the purpose of precision.
1, the present invention be except strengthening integrally-built stability and structural strength with the bonding interaction of aforementioned round key, and then promotes outside moment of torsion and the load; Can also be with the rolling effect of aforementioned ball; Under the situation that does not influence driving torque, reduce wear, and promote the smoothness of slippage.
2, the present invention can directly machine aforementioned first half slot and aforementioned second half slot, and can directly dispose ball with the mode of grinding; And do not need to be provided with in addition retainer or circulatory flow, whereby, except can simplified processing process; And can significantly reduce manufacture cost,, then can obtain compensation by aforementioned round key as for the problem of required precision; And then keep the centre of sphere precision (out of roughness) of this key axle; And can between machining accuracy and processing cost, obtain an economic benefit, and significantly reduce noise, improve quality of product of the present invention.
Above-mentioned explanation only is the general introduction of technological scheme of the present invention; Understand technological means of the present invention in order can more to know; And can implement according to the content of specification, and for let of the present invention above-mentioned with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Fig. 1 is a stereogram of the general transmission shaft of explanation;
Fig. 2 is a sectional view of the processing worker method of aforementioned transmission shaft one driving component of explanation;
Fig. 3 is a three-dimensional cutaway view of the general ball type transmission shaft of explanation;
Fig. 4 is a three-dimensional exploded view of a preferred embodiment of explanation the present invention one driveline;
Fig. 5 is a three-dimensional cutaway view of this preferred embodiment; And
Fig. 6 is a sectional view of this preferred embodiment.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention; Below in conjunction with accompanying drawing and preferred embodiment; To its embodiment of driveline, structure, characteristic and the effect thereof that proposes according to the present invention, specify as after.
Consult Fig. 4, Fig. 5, and Fig. 6, a preferred embodiment of driveline of the present invention comprises a key axle 4, driving component 5, a plurality of rolling bolt key group 6, and two bounding meanss 71,72.
This key axle 4 extends along an axis X direction, and has around this axis X and be formed on a plurality of first half slots 42 of an outer surface 41.
This driving component 5 is a gear in this preferred embodiment; And along this axis X and this key axle 4; And have around this axis X and be formed on an internal surface 51 a plurality of second half slots 52, be formed on an annular groove 53 of this internal surface 51 and a contiguous end and a thread section 54 of the contiguous the other end.What deserves to be mentioned is; This preferred embodiment is to be processing machine with a grinder (figure do not show); This grinder has with the axis X center and rotates and pass the grinding wheel spindle (figure does not show) of these driving component 5 internal surfaces 51 along this axis X, is processed to form aforementioned second half slot 52 through lapping mode.
Aforementioned rolling bolt key group 6 is set in 52 of this first half slot 42 and this second half slots respectively, and has respectively and along a round key 61 of parallel this axis X direction configuration, and four balls 62.What deserves to be mentioned is, can through a plurality of bolt spares (figure do not show) respectively spiral shell wear this driving component 5, and be spirally connected with the round key 61 of relative position, make that aforementioned round key 61 and this driving component 5 are fixed to be one.
Aforementioned bounding means 71,72 is respectively a C shape latch closure and a collar nut in this preferred embodiment, and this bounding means 71 is embedded in the annular groove 53 of this driving component 5, and is blocked in aforementioned rolling bolt key group 6 one sides.This bounding means 72 screws togather with the thread section 54 of this driving component 5, and compels to be against aforementioned rolling bolt key group 6 opposite sides, makes aforementioned rolling bolt key group 6 slide against this key axle 4 with this driving component 5.
During installation; Only need earlier cover should driving component 5 and this key axle 4, more aforementioned round bolt key 61 and aforementioned ball 62 are received into 52 of aforementioned first half slot 42 and aforementioned second half slots in regular turn, at last; Be blocked in aforementioned rolling bolt key group 6 both sides with aforementioned bounding means 71,72, just can accomplish assembling.
During action; This driving component 5 is involutory with aforementioned first half slot 42 with aforementioned round key 61 except meeting; Make this driving component 5 and this key axle 4 form interlocks and outside rotating synchronously, and this driving component 5 can be chute with first half slot 42 of this key axle 4, be slider with aforementioned round key 61; Reaching with aforementioned ball 62 is roll piece, and follows this key axle 4 to move along this axis X.
Whereby; Spacing aforementioned round key 61 on 4 on this driving component 5 and this key axle is except strengthening outside integrally-built stability and the structural strength with the mode of face contact; And aforementioned ball 62 in aforementioned first half slot 42 and 52 rollings of aforementioned second half slot; Also can utilize the means of rolling of a contact, reduce frictional resistance, and promote the smoothness of slippage.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technological scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technological scheme of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technological scheme of the present invention according to technical spirit of the present invention.
Claims (5)
1. driveline is characterized in that it comprises:
A key axle has around an axis and is formed on a plurality of first half slots of an outer surface;
A driving component closes along this axis and this key axle sleeve, and has around this axis and be formed on a plurality of second half slots of an internal surface; And
A plurality of rolling bolt key groups are set in respectively between this first half slot and this second half slot, and at least one round key and at least one ball that have respectively and arrange along parallel this axial direction.
2. driveline according to claim 1 is characterized in that, the ball of each rolling bolt key group is total a plurality of.
3. driveline according to claim 2 is characterized in that aforementioned ball is arranged in the both sides of this round key respectively.
4. driveline according to claim 1 is characterized in that, also includes two bounding meanss, and aforementioned bounding means is used for spacing aforementioned rolling bolt key group, makes aforementioned rolling bolt key group slide against this key axle with this driving component.
5. driveline according to claim 4; It is characterized in that this driving component also has an annular groove that is formed on this internal surface and a contiguous end, and a thread section of the contiguous the other end; Aforementioned bounding means is respectively a C shape latch closure and a collar nut; This C shape latch closure is embedded in this annular groove and is blocked in aforementioned rolling bolt key group one side, and the thread section of this collar nut and this driving component screws togather, and compels to be against aforementioned rolling bolt key group opposite side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102606499A CN102374276A (en) | 2010-08-20 | 2010-08-20 | Transmission shaft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102606499A CN102374276A (en) | 2010-08-20 | 2010-08-20 | Transmission shaft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102374276A true CN102374276A (en) | 2012-03-14 |
Family
ID=45793324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102606499A Pending CN102374276A (en) | 2010-08-20 | 2010-08-20 | Transmission shaft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102374276A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527756B (en) * | 2013-02-04 | 2016-08-24 | 马骥 | Compact type variable transmission mechanism |
| WO2018072515A1 (en) * | 2016-10-21 | 2018-04-26 | 珠海格力电器股份有限公司 | Impeller locking structure and compressor |
| DE102016124837B3 (en) * | 2016-12-19 | 2018-04-26 | Schaeffler Technologies AG & Co. KG | Hub bearing housing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH274958A (en) * | 1948-12-23 | 1951-04-30 | D Eternod Edgar | Device comprising a bored part mounted on a cylindrical surface of a support element. |
| JPS57190119A (en) * | 1981-05-15 | 1982-11-22 | Nippon Seiko Kk | Ball spline device |
| CN2517904Y (en) * | 2002-01-19 | 2002-10-23 | 刘亚军 | Steel ball spline |
| JP2005003108A (en) * | 2003-06-12 | 2005-01-06 | Nsk Ltd | Spline device and toroidal continuously variable transmission using the same |
| CN201100392Y (en) * | 2007-09-03 | 2008-08-13 | 盘讯精密工业股份有限公司 | Improved transmission structure for engine car power generator |
| CN101354061A (en) * | 2007-07-25 | 2009-01-28 | 基尔谢中央传动有限公司 | Connection of two bodies which can be rotated around a common rotation axis |
| CN202381555U (en) * | 2011-12-16 | 2012-08-15 | 王昇辉 | Slide shaft device |
-
2010
- 2010-08-20 CN CN2010102606499A patent/CN102374276A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH274958A (en) * | 1948-12-23 | 1951-04-30 | D Eternod Edgar | Device comprising a bored part mounted on a cylindrical surface of a support element. |
| JPS57190119A (en) * | 1981-05-15 | 1982-11-22 | Nippon Seiko Kk | Ball spline device |
| CN2517904Y (en) * | 2002-01-19 | 2002-10-23 | 刘亚军 | Steel ball spline |
| JP2005003108A (en) * | 2003-06-12 | 2005-01-06 | Nsk Ltd | Spline device and toroidal continuously variable transmission using the same |
| CN101354061A (en) * | 2007-07-25 | 2009-01-28 | 基尔谢中央传动有限公司 | Connection of two bodies which can be rotated around a common rotation axis |
| CN201100392Y (en) * | 2007-09-03 | 2008-08-13 | 盘讯精密工业股份有限公司 | Improved transmission structure for engine car power generator |
| CN202381555U (en) * | 2011-12-16 | 2012-08-15 | 王昇辉 | Slide shaft device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527756B (en) * | 2013-02-04 | 2016-08-24 | 马骥 | Compact type variable transmission mechanism |
| WO2018072515A1 (en) * | 2016-10-21 | 2018-04-26 | 珠海格力电器股份有限公司 | Impeller locking structure and compressor |
| DE102016124837B3 (en) * | 2016-12-19 | 2018-04-26 | Schaeffler Technologies AG & Co. KG | Hub bearing housing |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120314 |