KR101775245B1 - Hi-Low synchro-device for power splitting type manual transmission - Google Patents

Hi-Low synchro-device for power splitting type manual transmission Download PDF

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Publication number
KR101775245B1
KR101775245B1 KR1020150185604A KR20150185604A KR101775245B1 KR 101775245 B1 KR101775245 B1 KR 101775245B1 KR 1020150185604 A KR1020150185604 A KR 1020150185604A KR 20150185604 A KR20150185604 A KR 20150185604A KR 101775245 B1 KR101775245 B1 KR 101775245B1
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South Korea
Prior art keywords
synchro
ring
pair
sleeve
rings
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KR1020150185604A
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Korean (ko)
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KR20170076829A (en
Inventor
유현수
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현대다이모스(주)
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/12—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with means for synchronisation not incorporated in the clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/02—Arrangements for synchronisation, also for power-operated clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F16H2055/178—Toothed wheels combined with clutch means, e.g. gear with integrated synchronizer clutch

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

A pair of synchronizing rings located at opposite sides of a middle ring to be meshed with the inner circumferential surface of a sleeve are elastically supported in a direction opposite to each other in a mutually opposite rotational direction, Low synchronous device of a power branching type manual transmission in which a more stable synchronizing action can be realized between the inner circumferential surface of the synchro ring and the cone portion of the clutch gear in high-low speed changeover by forming the photo deflecting chamfer.
The above-described high-low synchro device includes a sleeve 10 movably installed in the axial direction, a middle ring 20 meshing with the inner circumferential surface of the sleeve 10 and having a plurality of accommodating space portions 24 in the rotating direction, And a plurality of protrusions (34) arranged to be engageable with the inner circumferential surface of the sleeve (10) at both sides of the intermediate ring (20) and inserted into the accommodation space part (24) And an elastic pressing portion for elastically supporting the projecting portions 34 of the pair of synchro rings 30 in the rotation direction opposite to each other with respect to the accommodation space portion 24 of the intermediate ring 20 And a pair of clutch gears (40) arranged to be in contact with the pair of synchro ring (30) and synchronized with the synchro ring (30) in accordance with the axial displacement of the sleeve (10) do.

Figure R1020150185604

Description

[0001] The present invention relates to a high-low synchro device for a power branching type manual transmission,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a synchromesh device, which is applied to a planetary gear portion of a power branching type manual transmission and switches the output of a transmission to a high or low state, A pair of synchronizing rings disposed on both sides are elastically supported in a direction opposite to the mutually opposing rotation direction while forming a biasing chamfer inclined in one direction on the external teeth of the synchronizing ring which is in tooth contact with the internal teeth of the sleeve, Speed synchro mechanism of a power branching type manual transmission in which a more stable synchronizing action can be realized between the inner circumferential surface of the clutch gear and the cone portion of the clutch gear.

Generally, a high-power manual transmission mounted on a large-sized commercial vehicle is equipped with a power train type gear train for outputting power at a plurality of speed ratios (12 stages or 16 stages, etc.) using a limited gear train. A plurality of synchromesh mechanisms for switching paths are provided. Further, a planetary gear set capable of dualizing the power transmission structure with the drive shaft for outputting the rotational speed to a high state (constant-velocity transition) or a low state (deceleration transition) And a separate synchromesh mechanism for selecting the high-low switching for the high-low.

For example, a power-split multi-stage manual transmission mounted on a conventional large-sized commercial vehicle includes a gear train and a planetary gear set as shown in FIG. 1 of Patent Application No. 10-2013-0123133 and a plurality of synchronizers . Particularly, the planetary gear set and the synchro mechanism for high-low switching thereof are shown in detail in FIGS. 2 and 3, respectively. In this case, the rotational speed at which the power is transferred from the power branched transmission through the main shaft to the planetary gear set and finally output to the outside can be switched to the constant speed transition or the deceleration transition by the high-low switching by the synchromesh mechanism.

The synchromesh mechanism for switching the output of the planetary gear set located at the final output stage to the high or low state in the power branching type manual transmission as described above is a structure of an inertia lock pin type and is configured as disclosed in Registration No. 10-0366316 . That is, the pin-type synchronizing apparatus of Registration No. 10-0366316 frictionally synchronizes and connects one of the first and second drives 14, 16 mounted so as to be rotatable relative to the shaft 12a of the shaft 12 (22) that is selectively operative to rotate relative to said shaft (12), said spline (12) having an inner spline (38, 40) slidably engaged with said outer spline First and second coarse members (30, 32) respectively engaged with third and fourth cooperating members (34, 36) movable toward the first and second drives (14, 16); A first and a second cone friction rings (26, 28) respectively fixed to rotate with the first and second drives; a second friction ring (26, 28) concentric with the shaft and frictionally engaged with the first and second friction rings Third and fourth cone friction rings (46, 48) axially movable between said drives to provide a synchronizing torque for synchronizing the shafts and said drives; In order to axially move said third and fourth coarse members and said third and fourth rings in said engagement in response to an axial bi-directional shift force (F o) applied to said flange, said third and fourth coarse members Radially extending flange (42) having axially opposite surfaces (42a, 42b) located between said first and second friction rings (34, 36) and said third and fourth friction rings (46, 48); Includes a plurality of circumferentially spaced pins 50 extending axially between said third and fourth friction rings 46, 48 and axially within a set of apertures 42c in said flange The pins have blocker shoulders 50c and 50d that engage with a blocker shoulder formed around the respective engaging opening 42c to prevent engagement of the engagement members 30,38 and 32,40 before synchronization Blocking means (50c, 50d) which operate when engaged; And a first means (44) for fixing the flange for relative axial movement relative to the third and fourth co-operating members, the first means comprising a plurality of circumferentially spaced retainers (44) , Said retainer having an axially extending portion (44a) disposed about the radially outer portions (34b, 36b) of said third and fourth coarse members, and said third and fourth coarse members , 36) extending axially inwardly and extending radially inwardly and surrounding the axially opposite portions of the retainer (36), axially extending to limit radially outward movement of the retainers Are axially spaced apart and disposed radially outwardly facing portions 44c (48c, 48c) which are arranged in a proximal-slidable relationship with the radially inner portions 46c, 48c of the third and fourth friction rings 46, ) Is made in a configuration that also.

Conventionally, the pin type synchronizing apparatus disclosed in Registration No. 10-0366316 includes friction rings 46 and 48 located on both sides of a flange 42 and three pins 50 for connecting the friction rings 46 and 48 so as to transmit power therebetween The lower diameter portion 50b of the pin 50 is brought into contact with the chamfered surface formed in the opening 42c of the flange 42 when the high-low switch is performed, So that the desired shift can be achieved.

However, since the pin-type synchromesh mechanism described above is limited to the chamfer portion of the pin and the opening portion of the indexing portion of the synchro ring, when it is applied to a power branching type manual transmission mounted on a heavy-duty commercial vehicle, satisfactory durability can be guaranteed Not only there is a disadvantage in terms of performance, but also disadvantage.

As a countermeasure against this problem, when a conventional friction-type synchromesh mechanism capable of satisfying a desired level of performance by replacing the existing pin-type synchromesh mechanism is applied, the installation itself can not be performed due to the space limitation. Therefore, It is required to develop a new type of synchrotron device which is considered.

Patent Document 1. Patent Application No. 10-2013-0123133 Patent Document 2. Registration No. 10-0366316

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a pneumatic tire which comprises a pair of synchronous rings disposed at both sides of a middle ring, By forming the deflection chamfer inclined in one direction in the external teeth of the synchronizing ring which is in contact with the inner teeth, the synchronizing action can be more stably performed between the inner circumferential surface of the synchronizing ring and the cone portion of the clutch gear during high- So that the durability of the power split type manual transmission can be improved.

According to an aspect of the present invention, there is provided a method for manufacturing a sleeve, comprising the steps of: providing a sleeve movably installed in an axial direction, a middle ring coupled to an inner circumferential surface of the sleeve and having a plurality of accommodation spaces in a rotating direction, A pair of synchronizing rings which are disposed so as to be engageable with the inner circumferential surface and are inserted into the accommodating space part with a rotational direction clearance therebetween, a projection part of the pair of synchronizing rings with respect to the accommodation space part of the intermediate ring And an elastic pressing portion that elastically presses the elastic pressing portion in a direction opposite to the rotational direction of the synchro ring and that is synchronized with the synchro ring in accordance with axial movement of the synchro ring in accordance with axial displacement of the sleeve And a pair of clutch gears.

In the present invention, the elastic pressing portion elastically supports any one of the pair of the synchro rings in a rotation direction of one side with respect to the accommodation space portion of the intermediate ring, so that a clearance is formed between the protrusion portion and the accommodation space portion in the rotation direction And the other one of the pair of synchro rings is elastically supported in the other rotation direction with respect to the accommodation space portion of the intermediate ring so that a clearance is formed in the rotation direction between the protrusion portion and the accommodation space portion And a second plug for preventing generation of the second plug.

In the present invention, any one of the pair of synchronizing rings forms a first through hole for accommodating the first plug in the rotation direction inside the projecting portion, and the first plug has the first through- And the other of the pair of synchronizing rings is provided in the inside of the through hole so that the back surface is elastically supported by the first return spring, And the second plug is installed such that the back surface of the second plug is elastically supported by the second return spring inside the second through hole.

In the present invention, the pair of synchro rings each have external teeth for tooth engagement with the internal teeth of the sleeve, and each deflection chamfer forms a deflection chamfer at one end toward the internal teeth of the sleeve, Are set in mutually opposite directions about the center ring.

In the present invention, the accommodating space portion and the protruding portion are radially spaced apart from each other about the axial center of the intermediate ring and the synchro ring, and are disposed at corresponding positions, The protrusions of the synchro ring are interchangeably inserted.

The present invention relates to a synchromesh device, which is applied to a planetary gear portion of a power branching type manual transmission and switches the output of a transmission to a high or low state, The protruding portion of the synchronizing ring of the intermediate ring is elastically supported without any clearance in the rotating direction opposite to the accommodating space portion of the intermediate ring via the elastic pressing portion while a biasing chamfer inclined in one direction A more stable synchronizing action can be realized between the inner circumferential surface of the synchro ring and the cone portion of the clutch gear at the time of high-low speed change, and the durability performance of the synchromesh mechanism can be improved through this.

Particularly, the present invention relates to a high torque transmission type transmission, such as a power branching type manual transmission, through a stable synchronizing action which can be realized by a tooth contact between a plurality of inner teeth formed on the inner circumferential surface of the sleeve and a plurality of outer teeth formed on the outer circumferential surface of the synchro ring. Which is required in a large-sized multi-speed transmission of the present invention. That is, according to the present invention, a pair of synchronizing rings arranged so as to occupy a space defined on both sides around a middle ring to be engaged with the sleeve, and a tooth contact portion capable of being accompanied by a synchronizing action during shifting between the pair of synchronizing rings It can be ensured over a wide range, so that an improved synchronizing effect can be expected.

1 is a perspective view showing an appearance of a high-low synchromesh device of a power branching type manual transmission according to an embodiment of the present invention.
2 is a longitudinal sectional view of the high-low synchrotron device shown in Fig.
3 is an exploded perspective view showing a configuration of the high-low synchrotron device shown in Fig.
4 is a perspective view showing a state in which only the sleeve portion is removed in order to clearly show the arrangement relationship between the inner teeth of the sleeve and the outer teeth of the synchro ring in the present invention.
Fig. 5 is a view for explaining a constitutional relationship in which, according to the present invention, the projecting portion of the synchro ring with respect to the accommodation space portion of the intermediate ring is closely contacted with no clearance in the specific rotation direction via the elastic pressing portion.
6 is an explanatory diagram sequentially showing the interlocking relationship between the internal teeth of the sleeve and the external teeth of the synchro ring and the tooth engagement relationship with the external teeth of the clutch gear in the case of high-low switching.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing an appearance of a high-low synchromesh device of a power branching type manual transmission according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the high- 1 is an exploded perspective view showing a configuration of the high-low synchrotron device shown in Fig.

1 to 3, a Hi-Low synchro device applied to the planetary gear unit of the power split type manual transmission according to the present invention includes a sleeve 10, a sleeve 10, A pair of synchronizing rings 30 disposed on both sides of the intermediate ring 20 and a pair of clutch gears 40 arranged on the outside of the pair of synchronizing rings 30 ).

The sleeve 10 is displaced in the axial direction due to the operation of a shift fork (not shown) upon high-low switching. The sleeve 10 is provided with an outer tooth 12 at the front circumference of the outer circumference, And a recessed groove 14 for engagement with the shift fork is formed on one side along the entire circumference. The sleeve 10 has an inner tooth 16 for tooth coupling between the intermediate ring 20 and the synchro ring 30 and the clutch gear 40 at the front peripheral portion of the inner circumferential surface.

The intermediate ring 20 forms a tooth 22 at a position defined by a plurality of points on the circumference of the outer circumferential surface for tooth coupling with the inner teeth 16 of the sleeve 10. The intermediate ring 20 has a plurality of accommodating space portions 24 formed in a concave shape along the rotational direction on the outer circumferential surface thereof. The accommodating space portion 24 includes a pair of synchronizing rings 30 To be able to allow a rotation directional clearance to the rotating direction clearance. In this case, it is preferable that the accommodation space portion 24 is disposed so as to be spaced radially equidistantly with respect to the axial center of the intermediate ring 20. That is, the intermediate ring 20 is configured to form the external teeth 22 on the entire circumference excluding the forming space of the accommodation space 24. [

The sleeve 10 is a pair of members arranged to face opposite sides of the intermediate ring 20 so as to be opposed to each other in the axial direction of the sleeve 10, As shown in FIG. To this end, the synchro ring 30 is formed on the outer circumferential surface at a position defined by a plurality of points in the front circumferential portion of the outer circumferential surface 32 capable of being meshed with the inner tooth 16 of the sleeve 10. The external teeth 32 of the synchro ring 30 are formed at positions corresponding to the external teeth 22 formed in the remaining circumferential portions of the intermediate ring 20 except for the accommodation space portion 24. [

The external teeth 32 of the synchro ring 30 are not symmetrically formed at one end of the sleeve 10 toward the internal teeth 16 but form a deflection chamfer 32a inclined to one side. In particular, the inclined direction of the deflection chamfer 32a is set so as to be opposite to each other in the synchro ring 30 disposed on both sides with respect to the intermediate ring 20 as a left-right point symmetrical structure. The inclined direction of the deflection chamfer 32a is set to be opposite to the rotation direction of the synchro ring 30 by the elastic pressing portion 50 described later.

In addition, the synchro ring 30 is provided at one side with a protrusion 34 inserted into the accommodation space portion 24 of the intermediate ring 20 with a clearance in the rotational direction, Is formed at a position corresponding to the accommodation space portion (24) of the ring (20). That is, the accommodating space portion 24 and the protruding portion 34 are radially spaced apart from each other about the axial centers of the intermediate ring 20 and the synchro ring 30, and are disposed at corresponding positions. Particularly, the projecting portions 34 of the pair of synchro rings 30 with respect to the accommodation space portion 24 of the intermediate ring 20 are configured to be interchangeably inserted.

3, the projecting portion 34 of the synchro ring 30 located on the left side of the specific accommodation space portion 24 among the plurality of accommodation space portions 24 formed in the intermediate ring 20 is inserted The protrusion 34 of the synchro ring 30 located on the right side is inserted into the other accommodating space part 24 adjacent to the specific accommodating space part 24. The number of the accommodating space portions 24 formed in the intermediate ring 20 is set to be twice as many as the number of the protruding portions 34 formed in the synchro ring 30. As a result, as shown in FIG. 3, the projections 34 of the pair of synchro rings 30 located on both sides of the intermediate ring 20 are alternately inserted into the accommodation space 24 .

The clutch gear 40 is disposed so as to be in contact with the pair of synchro rings 30 and is synchronized with the axial movement of the synchro ring 30 resulting from the axial displacement of the sleeve 10, (16) of the sleeve (10). For this purpose, the clutch gear 40 forms the external teeth 42 at the front peripheral portion of the outer circumferential surface in order to engage with the external teeth 32 of the synchro ring 30. The clutch gear 40 is provided with a cone portion 44 which is formed so as to protrude in an inclined shape to carry out synchronization through friction between the clutch gear 40 and the inner circumferential surface of the synchro ring 30. [

The high-low synchromesh device of the power split type manual transmission according to the present invention is characterized in that the protrusions 34 of the pair of synchro rings 30 are rotated with respect to the receiving space portion 24 of the intermediate ring 20 And a plurality of elastic pressing portions 50 elastically supported in the direction of the arrows. That is, the elastic pressing portion 50 elastically urges the projecting portions 34 of the pair of synchro-rings 30 in the holding space 24 of the intermediate ring 20 in a direction opposite to the rotational direction The protrusions 34 of the pair of synchro rings 30 are brought into close contact with each other in the direction opposite to the accommodation space 24 of the intermediate ring 20, And the space in the rotation direction is not generated above the contact portion between the accommodating space portions 24.

3, the synchro ring 30 positioned on the left side of the intermediate ring 20 is elastically supported by the elastic pressing portion 50 so as to rotate in the counterclockwise direction CCW And the synchro ring 30 located on the right side is elastically supported to rotate toward the clockwise direction (CW) by the elastic pressing portion 50.

To this end, the elastic pressing portion 50 is provided on one of the pair of the synchro rings 30, which is located on the left side of the intermediate ring 20, A first plug 52 which is elastically supported in a counterclockwise direction CCW with respect to the protruding portion 34 so as not to generate a clearance in a clockwise direction CW which is an opposite direction between the protruding portion 34 and the accommodating space portion 24, And the other one of the pair of synchro rings 30 (located on the right side in reference to FIG. 3) in the clockwise direction (CW) with respect to the housing space portion 24 of the intermediate ring 20 And a second plug (54) that elastically supports the protrusion (34) so that no clearance is generated in a counterclockwise direction (CCW), which is an opposite direction between the protrusion (34) and the accommodation space (24).

Any one of the pair of synchro rings 30 (located on the left side in reference to FIG. 3) can receive the first plug 52 in the rotation direction inside the protrusion 34 And the first plug 52 is installed such that the back surface of the first plug 52 is elastically supported by the first return spring 52a in the first through hole 34a. The other one of the pair of synchro rings 30 (located on the right side in reference to FIG. 3) accommodates the second plug 54 in the rotation direction inside the protrusion 34 And the second plug 54 is installed such that the back surface of the second plug 54 is elastically supported by the second return spring 54a in the second through hole 34b.

The arrangement relationship between the internal teeth 16 of the sleeve 10 and the external teeth 32 of the synchro ring 30 located on both the left and right sides in the high-low synchro apparatus of the power branching type manual transmission according to the present invention is This can be more clearly understood with reference to FIG. That is, the inner teeth 16 of the sleeve 10 shown in FIG. 4 are shown in a state in which only the sleeve 10 is removed so that the arrangement relationship with the outer teeth 32 of the synchro ring 30 can be more easily understood FIG.

5, the protrusion 34 of the synchro ring 30 is pressed against the housing space 24 of the intermediate ring 20 by the elastic pressing portion 50 in a specific rotation direction It is possible to more clearly understand the state of being supported. 5, the synchro ring 30 positioned on the left side with respect to the intermediate ring 20 is formed so that the first plug 52 of the elastic pressing portion 50 contacts the protrusion 34, The protruding portion 34 is provided in the receiving space portion 24 so as to be elastically supported in the first through hole 34a in the specific rotation direction via the first return spring 52a. Can be closely contacted with the side surface of the accommodation space portion (24) in the direction opposite to the installation direction of the first plug (52) supported by the first return spring (52a). In the case of the synchro ring 30 positioned on the right side of the intermediate ring 20, the second plug 54 and the second return spring 54a are elastically supported in a direction opposite to the above direction, And can be closely contacted in the rotation direction opposite to the side surface of the accommodation space portion 24 without clearance.

6 is an explanatory diagram sequentially showing the interlocking relationship between the internal teeth of the sleeve and the external teeth of the synchro ring and the tooth engagement relationship with the external teeth of the clutch gear in the case of high-low switching.

6 (a), when the axial movement of the sleeve 10 is performed in accordance with the axial displacement of the shift fork when the hi-low switch is operated, The free end of the inner teeth 16 of the synchro ring 30 comes into contact with the deflection chamfer 32a formed on the outer teeth 32 of the synchro ring 30. [

In this process, at the tooth contact portion between the internal teeth 16 of the sleeve 10 and the external teeth 32 of the synchronizing ring 30, the synchronizing ring 30 rotates in accordance with the angle setting by the deflection chamfer 32a And is rotated in one direction (downward as viewed in the drawing). That is to say, the inner teeth 16 of the sleeve 10 ride over the teeth contact surfaces of the deflection chamfer 32a formed on the outer teeth 32 of the synchro ring 30. [

The protruding portion 34 of the synchro ring 30 is maintained in a state of receiving a repulsive force in the clockwise direction CW by the elastic pressing portion 50, (CCW, reference downward direction) by the rotational direction acting force generated by the tooth contact between the deflection chamfer 32a of the external teeth 32 of the ring 30.

The inner circumferential surface of the synchro ring 30 and the outer circumferential surface of the inner circumferential surface 16 of the sleeve 10 receive the force acting on the inner circumferential surface 16 of the sleeve 10, Between the cone portions 44 of the gear 40 is accompanied by a synchronous action by friction.

6 (b) to 6 (c), when the axial movement of the internal teeth 16 of the sleeve 10 toward the external teeth 32 of the synchro ring 30 continues, The CCW rotation of the projection 34 of the ring 30 continues until it completely contacts the receiving space 24 of the intermediate ring 20 while the synchronizing ring 30 The clutch gear 40 is further moved in the axial direction toward the clutch gear 40 located at the side and continues until the synchronization is completed.

6 (d), when the synchronization between the synchro ring 30 and the clutch gear 40 is completed through the above-described series of processes, the inner teeth 16 of the sleeve 10 The shift to the fully engaged state with respect to the external tooth 42 of the clutch gear 40 is made through the external teeth 32 of the synchro ring 30 and the high-low shift is ended.

Accordingly, when switching to the series of high-low gear stages as described above, the rotation direction of the accommodating space portion 24 is set to be a reference position on both sides of the intermediate ring 20 via the elastic pressing portion 50, A pressing action for elastically supporting the projecting portion 34 of the synchro ring 30 in a direction opposite to the direction of rotation of the sleeve 10 and a pressing action for pressing the protrusion 34 of the synchro ring 30 between the internal teeth 16 of the sleeve 10 and the external teeth 32 of the synchro ring 30 Contact between the inner circumferential surface of the synchro ring 30 and the cone portion 44 of the clutch gear 40 through a rotational action opposite to the pressing direction by the elastic pressing portion 50 made by the biasing chamfer 32a It is possible to stabilize the synchronization and increase the durability of the parts.

Particularly, the present invention is characterized in that a stable synchronous action due to tooth contact between a plurality of internal teeth 16 formed on the inner circumferential surface of the sleeve 10 and a plurality of external teeth 32 formed on the outer circumferential surface of the synchro ring 30, It is possible to satisfy the high motive power required in a high-torque, large-sized multi-speed transmission, such as a power split type manual transmission. That is, the present invention is characterized in that between the pair of synchro ring (30) and the clutch gear (40) arranged so as to occupy a space defined on both sides around the intermediate ring (20) It is possible to secure a tooth contact portion that can be accompanied by a synchronizing action in a shift operation over a wider range, thereby achieving an improved synchronizing effect.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the particular details of the embodiments set forth herein. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

10-Sleeve 12-Shout
14-recessed groove 16-internal tooth
20-Middle Ring 22-Shout
24-
30 - Synchro ring 32 - Shout
32a-deflection chamfer 34-
34a - First through hole 34b - Second through hole
40-clutch gear 42-shout
44-
50-elastic pressing portion 52-first plug
52a - first return spring 54 - second plug
54a - Second return spring

Claims (8)

A sleeve (10) movably installed in an axial direction;
An intermediate ring 20 meshing with the inner circumferential surface of the sleeve 10 and having a plurality of accommodating space portions 24 in the rotating direction;
Having a plurality of protrusions (34) arranged to be engageable with the inner circumferential surface of the sleeve (10) at both sides of the intermediate ring (20) and inserted into the accommodating space part (24) A synchro ring 30;
An elastic pressing portion 50 elastically supporting the projecting portions 34 of the pair of synchro rings 30 in the rotation direction opposite to each other with respect to the accommodation space portion 24 of the intermediate ring 20; And
And a pair of clutch gears (40) arranged to be in contact with the pair of synchro ring (30) and synchronized with the synchro ring (30) in accordance with the axial displacement of the sleeve (10)
The pair of synchronizing rings 30 are provided with external teeth 32 for tooth engagement with the internal teeth 16 of the sleeve 10 and each of the external teeth 32 has an internal teeth 16, the deflection chamfer 32a is formed at one end,
Wherein the inclined direction of the deflection chamfer (32a) is set in a direction opposite to the center of the intermediate ring (20) in a left-right point symmetrical structure. The method according to claim 1,
The elastic pressing portion (50)
A first plug (52) elastically supporting any one of the pair of the synchro rings (30) in one rotation direction with respect to the accommodation space (24) of the intermediate ring (20); And
And a second plug (54) elastically supporting the other one of the pair of the synchro rings (30) in the rotation direction of the other side with respect to the accommodation space (24) of the intermediate ring (20) A high - low synchro device of a branched manual transmission. The method of claim 2,
One of the pair of synchro rings (30)
A first through hole 34a for receiving the first plug 52 in the rotation direction is formed in the protrusion 34 and the first plug 52 is formed in the protrusion 34 of the first through hole 34a Wherein the first return spring (52a) is supported by the first return spring (52a) so as to support the rear surface thereof. The method of claim 2,
The other one of the pair of synchro rings (30)
A second through hole 34b for receiving the second plug 54 in the rotational direction is formed in the protrusion 34 and the second plug 54 is formed in the second through hole 34b And the rear surface of the rear portion is elastically supported by a second return spring (54a). delete delete The method according to claim 1,
Wherein the housing space (24) and the projections (34) are radially spaced apart from each other about the axis center of the intermediate ring (20) and the synchro ring (30) High-Low Synchro device of manual transmission. The method of claim 7,
Characterized in that the projecting portions (34) of the pair of synchronizing rings (30) are interchangeably inserted into the accommodating space portion (24) of the intermediate ring (20) Device.
KR1020150185604A 2015-12-24 2015-12-24 Hi-Low synchro-device for power splitting type manual transmission KR101775245B1 (en)

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KR101775245B1 true KR101775245B1 (en) 2017-09-06

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EP3462051B1 (en) * 2017-09-27 2020-04-15 Ningbo Geely Automobile Research & Development Co. Ltd. A transmission device
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JP2006226515A (en) * 2005-02-21 2006-08-31 Kyowa Metal Work Co Ltd Synchronizing device for transmission
JP2007211966A (en) * 2006-02-13 2007-08-23 Aichi Mach Ind Co Ltd Synchronizer
KR101510968B1 (en) * 2013-12-27 2015-04-09 현대다이모스(주) Synchronizer for manual transmission

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JP2006226515A (en) * 2005-02-21 2006-08-31 Kyowa Metal Work Co Ltd Synchronizing device for transmission
JP2007211966A (en) * 2006-02-13 2007-08-23 Aichi Mach Ind Co Ltd Synchronizer
KR101510968B1 (en) * 2013-12-27 2015-04-09 현대다이모스(주) Synchronizer for manual transmission

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