CN102022450A - Synchronization device for gearbox - Google Patents
Synchronization device for gearbox Download PDFInfo
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- CN102022450A CN102022450A CN2009101721938A CN200910172193A CN102022450A CN 102022450 A CN102022450 A CN 102022450A CN 2009101721938 A CN2009101721938 A CN 2009101721938A CN 200910172193 A CN200910172193 A CN 200910172193A CN 102022450 A CN102022450 A CN 102022450A
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Abstract
The invention relates to a synchronization device for a gearbox. Even if under the condition that the axial length of a hub spline part is short, a thrust part can be swung, so that synchronization performance is improved. An input gear (16) is integrated with a spline (16a) which is equivalent to a hub; an axial supporting hole (16d) corresponding to a notch (16b) is formed on a flange part (16c); a force-increasing inclined plane (16f) is formed on the end part of the notch (16b); one end of the thrust part (32) is inserted into the supporting hole (16d), and inclined planes (32d, 32e) for pushing a synchronizing ring (30) and an end face (32c) for receiving torque from the synchronizing ring (30) are formed on the other end side of the thrust part (32), so that when the thrust part (32) receives the torque from the synchronizing ring (30), the other end side swings towards a rotating direction by taking the supporting hole (16d) as a swinging pivot; and a pressure-bearing inclined plane (32f) formed on the thrust part (32) is abutted against the force-increasing inclined plane (16f), so that a force, generated by the torque, in the rotating direction is converted into the axial thrust and the thrust is transmitted to the synchronizing ring (30).
Description
Technical field
The present invention relates to a kind ofly when the vehicle-use transmission case carries out variable speed operation (change gear), the friction torque that produces with synchronizing ring makes sleeve increase the pushing force of synchronizing ring, can improve the synchronizer device for transmission of synchronizing capacity thus.
Background technique
In the past, known have a this synchronizer device for transmission, between wheel hub and synchronizing ring, form contact with the inclined-plane, passing to the thrust that produces in the process of wheel hub in part or all of the friction torque that synchronizing ring is produced, be used as the part of the pushing load of synchronizing ring, i.e. the effect (for example with reference to patent documentation 1, patent documentation 2) that obtains to improve synchronizing capacity by self energizing effort (self-energizing) effect.
In above-mentioned example in the past, between wheel hub and synchronizing ring, be provided with the thrust part, be at sleeve under the state of neutral position (Figure 14 of Figure 14 of patent documentation 1, patent documentation 2), the inclined-plane is not contacted each other mutually, prevent owing to the towing friction torque that produces on synchronizing ring produces thrust.
Its structure is as follows: when carrying out synchronous effect, the thrust part that is inserted in the breach that is formed on the wheel hub is accepted friction torque from synchronizing ring, being that oscillation center is swung in the breach of wheel hub, thereby the inclined-plane that forms on the thrust part is contacted with the inclined-plane that forms on wheel hub.
But there are the following problems in the method, in order to make thrust part swing, need make breach have to a certain degree axial length, and be difficult to be applied on the synchronizer of the short reverse gear of the axial length of wheel hub spline part etc.
That is, on same axle 2 gears are arranged and between is provided with under the situation such as synchronizer, wheel hub becomes one with a gear shape and the axial length of spline part is shorter sometimes, is difficult to use above-mentioned routine in the past.
Patent documentation 1: TOHKEMY 2007-040491 communique
Patent documentation 2: TOHKEMY 2007-225071 communique
Summary of the invention
The problem that invention will solve
The problem that solves is as follows: to swing in order making in the breach of thrust part on being formed at wheel hub, to be difficult to be applied on the short synchronizer of the axial length of spline part of wheel hub.
Even the object of the present invention is to provide under the short situation of a kind of axial length of the spline part at wheel hub, also can make the swing of thrust part, can seek to improve the synchronizer of net synchronization capability.
The scheme that is used to deal with problems
Synchronizer device for transmission of the present invention comprises: axle; Gear, its rotation on above-mentioned axle, and form wheel hub with periphery spline; Sleeve, it is formed with the interior Zhou Huajian corresponding with the periphery spline, can be assemblied on the periphery spline of wheel hub vertically movably; By lockout member, itself and axle rotation coaxially, and have external conical surface; Synchronizing ring, it is configured in gear and by between the lockout member, and has the circular cone internal surface; A plurality of thrust parts, they are inserted in the breach that is formed on the wheel hub, and be configured to and between sleeve and synchronizing ring, transmit end thrust, in this synchronizer device for transmission, on the internal side diameter lip part of gear, be formed with the axial bearing hole corresponding with breach, and, formed inclined plane of reinforcement by the lockout member side at breach, axial one distolateral being inserted in the bearing hole of thrust part, and, on another distolateral pressure-bearing inclined-plane of accepting the end face of friction torque and this friction torque being delivered to inclined plane of reinforcement from synchronizing ring that is formed with, utilize friction torque make another distolateral with the bearing hole be the swing fulcrum to sense of rotation swing and make inclined-plane and inclined plane of reinforcement butt, the force transformation of the sense of rotation that will be produced by friction torque becomes axial thrust and this thrust is delivered to synchronizing ring thus.
The effect of invention
Synchronizer device for transmission of the present invention inserts an end of thrust part in this bearing hole owing to the lip part at gear forms bearing hole, therefore, even under the short situation of the axial length of the spline part of wheel hub, the thrust part also can be swung, so, both prevented to produce thrust, can also improve net synchronization capability owing to the towing friction torque of synchronizing ring.
Description of drawings
Fig. 1 is the sectional view of reverse gear synchronizer.(embodiment 1)
Fig. 2 is the major component enlarged view of Fig. 1.
Fig. 3 is the local appearance figure that sees the input gear of Fig. 1 from the right side.
Fig. 4 is the figure of the relation of expression thrust part and spring.
Fig. 5 is the local appearance figure that sees the synchronizing ring of Fig. 1 from the right side.
Fig. 6 is the expansion External view of seeing from the top of Fig. 5.
Fig. 7 is a unfolded drawing of seeing the spline section of Fig. 2 from the top.
Fig. 8 is the major component enlarged view of Fig. 7.
Fig. 9 is the figure that is equivalent to Fig. 7 in the synchronizing process.
The figure of Figure 10 after to be sleeve from the state of Fig. 9 advance.
Figure 11 be sleeve from the state of Figure 10 advance the back and make EO figure.
Description of reference numerals
10: axle; 12: casing; 14: cover cap; 16: the input gear; 18: actuation gear; 20,22: bearing; 24,26: packing ring; 28: sleeve; 30: synchronizing ring; 32: the thrust part; 34: spring
Embodiment
Below, describe with the synchronizer device for transmission of accompanying drawing based on each embodiment embodiments of the present invention.
Embodiment 1
Fig. 1 is the synchronizer device for transmission of embodiments of the invention 1 and the sectional view of its periphery, is the figure of section of upper half part that draws from the center of axle 10.
In addition, Fig. 2 is the figure of the major component of enlarged view 1.
Axle 10 is supported two ends by the not shown hole 12a, the 14a that are formed on casing 12 and the cover cap 14.
Though can input gear 16 and actuation gear 18 be arranged free rotary ground supporting respectively by bearing 20 and 22 on axle 10, the flange 10a and the packing ring 24 and 26 that move axially by axle 10 of input gear 16 and actuation gear 18 are limited to casing 12 and cover cap 14.
In addition, actuation gear 18 constitutes of the present invention by lockout member.
On input gear 16, be formed with spline 16a, and can be equipped with the sleeve 28 that is formed with the spline 28a that cooperates with this spline 16a vertically movably.The part of this spline 16a is equivalent to the wheel hub on the common synchronizer.
That is, wheel hub becomes one with input gear 16.
On actuation gear 18, also be formed with spline 18a, corresponding with the spline 28a of sleeve 28.
On the periphery of sleeve 28, be formed with the fork groove 28b that is used for for not shown fork cooperation, in variable speed operation, sleeve 28 moved vertically by fork.
Because these if sleeve 28 moves and makes spline 28a and spline 18a engagement to axial right side in Fig. 1, then can make input gear 16 be connected by sleeve 28 with actuation gear 18, and can be with the torque actuated wheel of above-mentioned motor.
Between the spline 16a portion that imports gear 16 and actuation gear 18 and sleeve 28, be provided with synchronizing ring 30.The inboard of synchronizing ring 30 is formed with cone shape rubbing surface 30a, and is corresponding with the conical surface 18b on being formed on actuation gear 18.Carry out synchronous effect described later by rubbing between this rubbing surface 30a and the conical surface 18b.
Fig. 3 is that the part master who sees input gear 16 in Fig. 1 from the right side looks enlarged view.
As seeing among Fig. 2 and Fig. 3, on the spline 16a of input gear 16, be formed with breach 16b at 3 places of periphery, as shown in Figure 3, periphery in synchronizing ring 30 (drawing with thin double dot dash line) is formed with jut 30b, and this jut 30b is fastened among the above-mentioned breach 16b along sense of rotation as described later like that with having plurality of gaps.
In input gear 16, on lip part 16c, be formed with bearing hole 16d accordingly with the above-mentioned 3 breach 16b of place, as see among Fig. 3, thrust part 32 and bearing hole 16d fasten, and fasten with the inboard of sleeve 28 as illustrated in fig. 2.
That is, as shown in Figure 2, on thrust part 32, be formed with groove 32a, and the projection 28c of sleeve 28 is fastened among the groove 32a.And in the spline 28a of sleeve 28, the remaining remainder in right side that downcuts among 3 figure of place is projection 28c.
And as shown in Figure 4, the end 34a of spring 34 is fastened on to the radial direction outside curve in the not shown hole of input gear 16, and restraining spring 34 moves to sense of rotation.
Fig. 5 is a partial front elevation view of seeing synchronizing ring 30 in Fig. 1 from the left side, and Fig. 6 draws the figure of the expansion shape seen from the top of Fig. 5, and Fig. 5 and Fig. 6 are enlarged views.
Fig. 7 is figure section, that launch that sees each spline 16a, 18a, 28a from radial outside, and Fig. 8 is the figure of the major component of enlarged view 7.
In Fig. 7,, remove projection 28c and with the draw spline 28a of sleeve 28 of fine rule for easy understanding.
At this, be the center with Fig. 5, Fig. 8, at length the periphery to thrust part 32 describes.
Central part at the jut 30b of synchronizing ring 30 is formed with axial groove 30c, and the circumferential width of groove 30c is the size that thrust part 32 can pass through.
Be formed with inclined- plane 30d, 30e in the end of groove 30c,, on thrust part 32, be formed with and the corresponding inclined-plane 32d of inclined- plane 30d, 30e, 32e as seeing among Fig. 8.
On the jut 30b of synchronizing ring 30, be provided with from back side 30f to the side-prominent 30g of fastening portion of input gear 16, and be formed with the fastening face 30h and the 30i of sense of rotation.
If synchronizing ring 30 imports gear 16 to a sideway swivel Z degree relatively from the state of Fig. 8, the end face 34c butt of fastening face 30h and thrust part 32 then, if to opposition side rotation Y degree, the fastening face 16e butt of fastening face 30i and the breach 1b that imports gear 16 then.
On thrust part 32, be formed with pressure-bearing inclined-plane 32f, on input gear 16, be formed with the inclined plane of reinforcement 16f corresponding with pressure-bearing inclined-plane 32f.
And thrust part 32 can move in the bearing hole 16d of input gear 16 vertically, and, being that oscillation center is swung as described later like that in the bearing hole 16d.
The work of synchronizer shown in Figure 1 below is described.
With the working drawing with Fig. 8 and the corresponding Fig. 9 of Fig. 7～shown in Figure 11 is that the center describes its work.
Fig. 9～working drawing shown in Figure 11 is a unfolded drawing with Fig. 7, Fig. 8 equally also.
Making not shown clutch separation under the state that has speed discrepancy between input gear 16 and the actuation gear 18 under the situation of reverse gear speed change, at first sleeve 28 right sides of beginning in each figure are moved by not shown fork.
If thrust part 32 also moves with sleeve 28, then at first, be fastened on the back side 30f butt of spring 34 and synchronizing ring 30 among the groove 32a of thrust part 32.
Because spring 34 is fastened among the spring groove 32b by the tension force that is caused by elasticity, so if sleeve 28 further moves to the right, then spring 34 is as desire breaks away from from spring groove 32b, by to radially inner side compression, and use with the corresponding power of its tension force and push synchronizing ring 30 vertically.
Because this pushing force, the rubbing surface 30a of synchronizing ring 30 is compressed against on the conical surface 18b of actuation gear 18, produces friction between rubbing surface 30a and the conical surface 18b, because the torque of this friction, synchronizing ring 30 input gear 16 is relatively rotated relatively, becomes state shown in Figure 9.
Promptly, because the friction torque between rubbing surface 30a and the conical surface 18b, the gap Z of Fig. 8 dwindles, the fastening face 30h of synchronizing ring 30 and thrust part 32 butts, and in thrust part 32, the inclined-plane 30d butt of inclined-plane 32d and synchronizing ring 30, and, as shown in Figure 9, thrust part 32 to be in the bearing hole 16d being center swing, thereby makes the inclined plane of reinforcement 16f butt of pressure-bearing inclined-plane 32f and input gear 16.
If sleeve 28 will further move to the right, then the inclined-plane 30d of the inclined-plane 32d of the thrust part 32 that moves together pushing synchronizing ring 30 further is pressed against rubbing surface 30a on the conical surface 18b of actuation gear 18.
At this, if set the tilt angle of inclined-plane 32d and inclined-plane 30d rightly, then as long as produce friction torque between rubbing surface 30a and conical surface 18b, thrust part 32 will continue to push synchronizing ring 30, imports the synchronous effect between gear 16 and the actuation gear 18.
At this moment, the friction torque that makes 32 swings of thrust part between rubbing surface 30a and the conical surface 18b is delivered on the inclined plane of reinforcement 16f of input gear 16 from the pressure-bearing inclined-plane 32f of thrust part 32, produces thrust at this.
That is, the pressure-bearing inclined-plane 32f that loads on of the sense of rotation that is caused by friction torque becomes axial load with inclined plane of reinforcement 16f up conversion, the result, and this load (thrust) makes thrust part 32 push synchronizing ring 30 more forcefully.
In other words, because can obtain has increased load, the so-called reinforcement effect that produces on the power of pushes against sleeve 28 to the right at not shown fork between pressure-bearing inclined- plane 32f, 16f, so, can performance exceed the effect corresponding synchronous performance of bringing into play with this part, promptly so-called reinforcement effect than common synchronizer.
If continue pushes against sleeve 28 to the right, then above-mentioned reinforcement effect makes as power-assisted that also the speed discrepancy between input gear 16 and the actuation gear 18 just disappears soon.
At this, if further pushes against sleeve 28 to the right, then thrust part 32 utilizes inclined-plane 32f to push synchronizing ring 30 open and makes synchronizing ring 30 degree of the above-mentioned gap Z of rotation relatively, becomes position relation as shown in Figure 10.
Then, if sleeve 28 further moves to the right, then soon as shown in figure 11, the spline 28a of sleeve 28 and the spline 18a of actuation gear 18 engagement follow the variable speed operation of synchronous effect to finish.
As understanding in the above description, in order to obtain identical synchronized loading (friction torque), the load of not shown fork pushes against sleeve 28, little just more passable owing to part than common lock ring type (Borg Warner) synchronizer with above-mentioned reinforcement effect, so, we can say and improved net synchronization capability therefrom.
Because it is shorter to be equivalent to the axial length of spline 16a of input gear 16 of wheel hub in the past, so, although the swing of thrust part 32 in the breach of spline 16a was with example was same difficult in the past, can obtain reinforcement effect as previously discussed, this is because thrust part 32 is fastened on be formed among the bearing hole 16d on the input gear 16, and can make thrust part 32 being the cause that swing at the center in this bearing hole 16d.
And in the structure with embodiment explanation, though 32 sides in sense of rotation of thrust part are formed with pressure-bearing inclined-plane 32f, in the reverse gear of gearbox etc., this is enough.
But, if the thrust part forms the pressure-bearing inclined-plane in the both sides of sense of rotation, and also append the inclined-plane of gear (being input gear 16) side accordingly with it in above-mentioned example, no matter sense of rotation how, can both be made the synchronizer with reinforcement effect.
Synchronizer device for transmission of the present invention, general knowledge according to those skilled in the art, can shift gears and implement, for example, in order to improve the friction factor of rubbing surface, on the rubbing surface of synchronizing ring, form screw thread or oil groove etc., and, can obtain higher net synchronization capability by on rubbing surface, using suitable material, be applied to be called the synchronizer with a plurality of rubbing surfaces of many conical surfaces.
Utilizability on the industry
Even owing to axially and in the sychronisation of the littler reverse gear of radial space etc. also can obtain reinforcement effect, be convenient to improve net synchronization capability, so, be specially adapted to want the little lightweight riding vehicle gearbox of cube and can obtain advantage, and, also be applicable to have the gearbox etc. that carries out the sychronisation of variable speed operation with transmission device.
Claims (2)
1. a synchronizer device for transmission is characterized in that, comprising:
Axle;
Gear, its rotation on above-mentioned axle, and form wheel hub with periphery spline;
Sleeve, it is formed with the interior Zhou Huajian corresponding with above-mentioned periphery spline, can be assemblied on the periphery spline of above-mentioned wheel hub vertically movably;
By lockout member, itself and above-mentioned axle rotate coaxially, and have external conical surface;
Synchronizing ring, it is configured in said gear and above-mentioned by between the lockout member, and has the circular cone internal surface;
A plurality of thrust parts, they are inserted in the breach that is formed on the above-mentioned wheel hub, and are configured to and can transmit end thrust between above-mentioned sleeve and above-mentioned synchronizing ring,
Wherein, on the internal side diameter lip part of said gear, be formed with the axial bearing hole corresponding with above-mentioned breach, and, formed inclined plane of reinforcement the above-mentioned of above-mentioned breach by the lockout member side,
Axial one distolateral being inserted in the above-mentioned bearing hole of above-mentioned thrust part, and, on another distolateral pressure-bearing inclined-plane of accepting the end face of friction torque and this friction torque being delivered to above-mentioned inclined plane of reinforcement from above-mentioned synchronizing ring that is formed with, utilize above-mentioned friction torque make above-mentioned another state more than distolateral bearing hole for the swing fulcrum to the sense of rotation swing and make above-mentioned inclined-plane and above-mentioned inclined plane of reinforcement butt, will become axial thrust and this thrust is delivered to above-mentioned synchronizing ring by the force transformation of the sense of rotation of above-mentioned friction torque generation thus.
2. synchronizer device for transmission according to claim 1, it is characterized in that, radially inner side at above-mentioned thrust part forms recess, in this recess, be provided with and make the spring of this thrust part to the radial outside expansion, at above-mentioned thrust part with above-mentioned sleeve to above-mentioned during by the lockout member side shifting, above-mentioned spring is used with the corresponding power of its tension force and is pushed above-mentioned synchronizing ring vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910172193.8A CN102022450B (en) | 2009-09-21 | 2009-09-21 | Synchronization device for gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910172193.8A CN102022450B (en) | 2009-09-21 | 2009-09-21 | Synchronization device for gearbox |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102022450A true CN102022450A (en) | 2011-04-20 |
| CN102022450B CN102022450B (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910172193.8A Expired - Fee Related CN102022450B (en) | 2009-09-21 | 2009-09-21 | Synchronization device for gearbox |
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| Country | Link |
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| CN (1) | CN102022450B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105308365A (en) * | 2013-05-29 | 2016-02-03 | 技术推进公司 | Transmission with lubrication of a synchromesh |
| CN111692228A (en) * | 2015-07-22 | 2020-09-22 | 伊顿智能动力有限公司 | Lift synchronizer set with reduced axial length |
| CN112303142A (en) * | 2020-10-29 | 2021-02-02 | 燕山大学 | Pressure-controllable friction ring type synchronizer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6900376U (en) * | 1969-01-07 | 1969-06-19 | Opel Adam Ag | SYNCHRONIZATION DEVICE FOR STEP-BY-STEP TRANSMISSIONS OF MOTOR VEHICLES |
| JP4609796B2 (en) * | 2005-08-05 | 2011-01-12 | 協和合金株式会社 | Synchronizer for transmission |
-
2009
- 2009-09-21 CN CN200910172193.8A patent/CN102022450B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105308365A (en) * | 2013-05-29 | 2016-02-03 | 技术推进公司 | Transmission with lubrication of a synchromesh |
| CN105308365B (en) * | 2013-05-29 | 2018-10-23 | 技术推进公司 | Gearbox with synchromesh gear lubrication |
| CN111692228A (en) * | 2015-07-22 | 2020-09-22 | 伊顿智能动力有限公司 | Lift synchronizer set with reduced axial length |
| CN112303142A (en) * | 2020-10-29 | 2021-02-02 | 燕山大学 | Pressure-controllable friction ring type synchronizer |
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| Publication number | Publication date |
|---|---|
| CN102022450B (en) | 2014-07-02 |
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Granted publication date: 20140702 Termination date: 20170921 |
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