阅读说明：本技术 一种汽车变速箱自增力同步器 (Self-energizing synchronizer of automobile gearbox ) 是由 杨宏伟 吴峰 田军 吴飞 于 2020-11-04 设计创作，主要内容包括：本发明公开了一种汽车变速箱自增力同步器,包括齿毂,所述齿毂外侧设有外花键,所述齿毂外侧均匀设有三对增力凸台,所述增力凸台上设有第一定位面和第一增力面,所述齿毂两侧分别布置有档位齿轮,两个所述档位齿轮上均固定安装有一个摩擦锥盘,所述齿毂外滑动套装有滑套,所述滑套的内表面上设有与所述齿毂的外花键相配合的内花键。本发明通过设置增力凸台和增力销,在挂挡过程中,在挂挡力的作用下。滑盘带着增力销与同步环轴向移动,当同步环的摩擦锥面与摩擦锥盘的摩擦锥面相接触时,产生摩擦扭矩,从而减小了驾驶员挂挡时所必须提供的挂挡力,这就使得驾驶员挂挡更加轻便。适用于汽车。(The invention discloses a self-energizing synchronizer of an automobile gearbox, which comprises a gear hub, wherein external splines are arranged on the outer side of the gear hub, three pairs of energizing bosses are uniformly arranged on the outer side of the gear hub, a first positioning surface and a first energizing surface are arranged on the energizing bosses, gear gears are respectively arranged on two sides of the gear hub, a friction conical disc is fixedly arranged on each of the two gear gears, a sliding sleeve is sleeved outside the gear hub in a sliding manner, and internal splines matched with the external splines of the gear hub are arranged on the inner surface of the sliding sleeve. The boosting boss and the boosting pin are arranged, so that the boosting device is under the action of gear engaging force in the gear engaging process. The sliding disc drives the power pin to axially move with the synchronizing ring, and when the friction conical surface of the synchronizing ring is contacted with the friction conical surface of the friction conical disc, friction torque is generated, so that gear engaging force required by a driver during gear engaging is reduced, and the gear engaging of the driver is lighter. The automobile is suitable for automobiles.)

1. The utility model provides a motor transmission self-energizing synchronizer, includes tooth hub (1), its characterized in that: the outer side of the gear hub (1) is provided with an external spline, the outer side of the gear hub (1) is uniformly provided with three pairs of boosting bosses (1a), the boosting bosses (1a) are provided with a first positioning surface (1a1) and a first boosting surface (1a2), gear gears (2) are respectively arranged on two sides of the gear hub (1), two gear gears (2) are fixedly provided with a friction conical disc (12), the gear hub (1) is externally sleeved with a sliding sleeve (3) in a sliding manner, the inner surface of the sliding sleeve (3) is provided with an internal spline matched with the external spline of the gear hub (1), the sliding sleeve (3) is further provided with a kidney-shaped hole (3a) corresponding to the boosting boss (1a) of the gear hub (1), the outer side of the sliding sleeve is provided with a locking ring (4), two side surfaces of the locking ring (4) are provided with first locking surfaces (4a), a through hole (4b) is formed in the middle of the locking ring (4);

a sliding disc (5) is fixedly sleeved on the outer surface of the locking ring (4), a first notch (5a), a second notch (5b) and a third notch (5c) are arranged on the inner surface of the sliding disc (5), the number of the second gaps (5b) is equal to that of the waist-shaped holes (3a) and the through holes (4b), the second gap (5b) is arranged corresponding to the waist-shaped hole (3a) and the through hole (4b), a reinforcement pin (9) is arranged at the second gap (5b) on the inner surface of the sliding disc (5), after the reinforcement pin (9) sequentially passes through the waist-shaped hole (3a) on the sliding sleeve (3) and the through hole (4b) on the locking ring (4), the top of the reinforcement pin (9) is fixedly arranged in the second notch (5b), and the tail of the reinforcement pin (9) is in sliding contact with the reinforcement boss (1a) of the gear hub (1);

the sliding disc is characterized in that a synchronizing ring (6) is respectively slidably sleeved at positions, corresponding to the two sides of the sliding disc (5), on the outer surface of the locking ring (4), a second locking surface (6a) and three notches (6b) which are uniformly distributed are arranged on the inner side surface of the synchronizing ring (6), and a first friction conical surface (6c) is arranged on the outer surface of the synchronizing ring (6).

2. The self-energizing synchronizer for a vehicle transmission of claim 1, wherein: each force boosting boss (1a) is respectively provided with two first force boosting surfaces (1a2) and a first positioning surface (1a 1).

3. The self-energizing synchronizer for a vehicle transmission of claim 1, wherein: the tail part of the boosting pin (9) is symmetrically provided with four second boosting surfaces (9b) and two second positioning surfaces (9a), the shapes of the second positioning surfaces (9a) of the boosting pin (9) and the first positioning surfaces (1a1) of the boosting bosses (1a) are the same, the first positioning surfaces (1a1) and the second positioning surfaces (9a) are respectively parallel to the central axis of the synchronizer, the shapes of the second boosting surfaces (9b) of the boosting pin (9) and the first boosting surfaces (1a2) of the boosting bosses (1a) are the same, the middle part of the boosting pin (9) is a cylindrical surface (9c), the diameter of the cylindrical surface (9c) is the same as the width of the sliding sleeve kidney-shaped hole (3a) and the diameter of the through hole (4b) on the locking ring (4), and the length of the sliding sleeve kidney-shaped hole (3a) is greater than the diameter of the cylindrical surface (9c) of the boosting pin, the top of the boosting pin (9) is rectangular, and the width of the top of the boosting pin (9) is equal to that of the second notch (5b) on the sliding disc (5).

4. The self-energizing synchronizer for a vehicle transmission of claim 1, wherein: the tooth hub (1) outside is equipped with blind hole (1b), cartridge has coil spring (11) and supporting pin (10) in proper order in blind hole (1b), coil spring (11) are in the bottom of blind hole (1b), outwards support live the bottom of supporting pin (10), the bottom of supporting pin (10) is the plane, and the top is outer cambered surface, sliding sleeve (3) suit when on tooth hub (1), the top of supporting pin (10) pushes into in nest hole (3b) of sliding sleeve (3), this moment coil spring (11) are in by compression state.

5. The self-energizing synchronizer for a vehicle transmission of claim 1, wherein: a connecting block (7) is arranged between the two synchronizing rings (6), the connecting block (7) penetrates through a first notch (5a) of the sliding disc (5) and is fixedly installed into a notch (6b) of the synchronizing ring (6), the width of the connecting block (7) is equal to that of the notch (6b) of the synchronizing ring (6), the width of the first notch (5a) of the sliding disc (5) is larger than that of the connecting block (7), the connecting block (7) and the notch (6b) of the synchronizing ring are installed in a welding or interference press-fitting mode to integrally connect the two synchronizing rings (6), a locking boss (6a) is arranged on the inner side of the synchronizing ring (6), second locking surfaces (6a1) are arranged at two ends of the inner side of the locking boss (6a), the second locking surfaces (6a1) of the synchronizing ring are equal to the first locking surfaces (4a) on the same side of the locking ring (4), and the number of the first locking surfaces (4a) is equal to that, The positions correspond.

6. The self-energizing synchronizer for a vehicle transmission according to claim 5, wherein: be equipped with three arc groove (4c) along circumference evenly distributed on the outer disc of locking circle (4), locking circle (4) with pre-synchronizing spring (8) have been arranged between connecting block (7), pre-synchronizing spring (8) fixed mounting be in on connecting block (7), be equipped with on pre-synchronizing spring (8) and inwards survey bellied cambered surface (8a), the position of cambered surface (8a) with the position of arc groove (4c) on locking circle (4) corresponds.

7. A self-energizing synchronizer for an automotive transmission according to claim 3, wherein: the boosting pin (9) is connected with the sliding disc (5) into a whole through welding after being installed in place.

8. The self-energizing synchronizer for a vehicle transmission of claim 1, wherein: the inner side of the friction cone disc (12) is provided with a second friction conical surface (12a), and the second friction conical surface (12a) and the first friction conical surface (6c) of the synchronizing ring (6) form a mutual friction surface.

Technical Field

The invention relates to the technical field of synchronizers, in particular to a self-energizing synchronizer of an automobile gearbox.

Background

The synchronizer is an important part of the automobile transmission, and the input part and the output part of the synchronizer are combined after being synchronized, so that the impact and noise during gear shifting are reduced, the gear shifting force is reduced, the gear shifting is smooth and light, the fatigue of a driver is reduced, the service life of the transmission is prolonged, the driving safety and riding comfort of an automobile are improved, and the acceleration and economy during starting of the automobile are improved to play an extremely important role.

As is well known, the shifting force of a manual transmission must be manually applied to a synchronizer by a vehicle driver, and as the requirement for comfort of shifting operation of a vehicle is improved, the shifting process is expected to be light and fast, so that the shifting time needs to be shortened while the shifting force is reduced by the driver, and the requirements for designing the synchronizer are higher.

Chinese patent CN201910071341.0 discloses a synchronizer for an automobile transmission, which comprises a gear hub, gear gears are respectively arranged on two sides of the gear hub, a sliding sleeve is slidably sleeved outside the gear hub, sliding sleeve locking surfaces are respectively arranged at two ends of an external spline of the sliding sleeve, a sliding disc is fixedly sleeved on the outer surface of the sliding sleeve, and an even number of sliding disc notches are arranged on the inner surface of the sliding disc; the outer surface of the sliding sleeve is respectively sleeved with a synchronizing ring in a sliding way at the position corresponding to the two sides of the sliding disc, and the inner end surface of the synchronizing ring is provided with limiting bosses which are inserted in the notches of the sliding disc at intervals; the inner surface of the synchronizing ring is provided with an internal spline, the internal spline and the notch of the sliding disc are arranged in a staggered manner, the inner end of the internal spline on the synchronizing ring is provided with a synchronizing ring locking surface, and the outer surface of the synchronizing ring is a friction conical surface; the outer surface of the sliding sleeve is clamped with a shrapnel which can drive the synchronous ring to slide; and the two gear gears are respectively and fixedly provided with a friction conical disc, and the inner surfaces of the friction conical discs are friction conical surfaces matched with the friction conical surfaces of the synchronizing rings, so that the gear box is suitable for a gearbox.

The synchronizer of the automobile gearbox is provided with the friction conical disc independently, so that the width of the friction conical surface can be increased by reducing the thickness of the sliding disc, the synchronizer has larger synchronization capacity, and the overload resistance of the synchronizer is improved; through designing into sliding sleeve and sliding tray and assembling the structure, reduced the part production degree of difficulty so widely. But it is still difficult to improve the comfort of the driver in engaging the gear.

Disclosure of Invention

The invention aims to provide a self-energizing synchronizer of an automobile gearbox.

In order to achieve the purpose, the invention provides the following technical scheme: a self-energizing synchronizer of an automobile gearbox comprises a gear hub, wherein external splines are arranged on the outer side of the gear hub, three pairs of energizing bosses are uniformly arranged on the outer side of the gear hub, a first positioning surface and a first energizing surface are arranged on each energizing boss, gear gears are arranged on two sides of the gear hub respectively, a friction conical disc is fixedly mounted on each of the two gear gears, a sliding sleeve is sleeved on the outer side of the gear hub in a sliding manner, internal splines matched with the external splines of the gear hub are arranged on the inner surface of the sliding sleeve, kidney-shaped holes corresponding to the energizing bosses of the gear hub are further formed in the sliding sleeve, a locking ring is sleeved on the outer side of the sliding sleeve, first locking surfaces are arranged on two side surfaces of the locking ring, and a through hole is formed in the middle of the locking ring;

a sliding disc is fixedly sleeved on the outer surface of the locking ring, a first notch, a second notch and a third notch are arranged on the inner surface of the sliding disc, the number of the second notch is equal to that of the kidney-shaped holes and the through holes, the second notch, the kidney-shaped holes and the through holes are correspondingly arranged, a force increasing pin is arranged at the second notch on the inner surface of the sliding disc, the force increasing pin sequentially penetrates through the kidney-shaped holes in the sliding sleeve and the through holes in the locking ring, the top of the force increasing pin is fixedly arranged in the second notch, and the tail of the force increasing pin is in sliding contact with a force increasing boss of the gear hub;

the outer surface of the locking ring is respectively sleeved with a synchronizing ring in a sliding mode at the positions corresponding to the two sides of the sliding disc, the inner side face of the synchronizing ring is provided with a second locking face and three notches which are evenly distributed, and the outer surface of the synchronizing ring is provided with a first friction conical face.

Preferably, each force boosting boss is provided with two first force boosting surfaces and one first positioning surface respectively.

Preferably, the tail of the boosting pin is symmetrically provided with four second boosting surfaces and two second positioning surfaces, the second positioning surfaces of the boosting pin and the first positioning surfaces of the boosting bosses are the same in shape, the first positioning surfaces and the second positioning surfaces are respectively parallel to the central axis of the synchronizer, the second boosting surfaces of the boosting pin and the first boosting surfaces of the boosting bosses are the same in shape, the middle of the boosting pin is a cylindrical surface, the diameter of the cylindrical surface is the same as the width of the sliding sleeve kidney-shaped hole and the diameter of the through hole in the locking ring, the length of the sliding sleeve kidney-shaped hole is larger than the diameter of the cylindrical surface of the boosting pin, the top of the boosting pin is rectangular, and the width of the top of the boosting pin is equal to the width of the second notch in the sliding disc.

Preferably, the outer side of the gear hub is provided with a blind hole, a spiral spring and a supporting pin are sequentially inserted into the blind hole, the spiral spring is arranged at the bottom of the blind hole and supports the bottom of the supporting pin outwards, the bottom of the supporting pin is a plane, the top of the supporting pin is an outer arc surface, when the sliding sleeve is sleeved on the gear hub, the top of the supporting pin is pushed into a socket hole of the sliding sleeve, and at the moment, the spiral spring is in a compressed state.

Preferably, a connecting block is arranged between the two synchronizing rings, the connecting block penetrates through a first notch of the sliding disc and is fixedly installed in a notch of the synchronizing ring, the width of the connecting block is equal to that of the notch of the synchronizing ring, the width of the first notch of the sliding disc is larger than that of the connecting block, the connecting block and the notch of the synchronizing ring are installed in a welding or interference press-fitting mode, the two synchronizing rings are connected into a whole, a locking boss is arranged on the inner side of the synchronizing ring, locking surfaces are arranged at two ends of the inner side surface of the locking boss, and the second locking surfaces of the synchronizing ring correspond to the first locking surfaces of the locking ring on the same side in quantity and position.

Preferably, the outer circular surface of the locking ring is provided with three arc grooves which are uniformly distributed along the circumference, a pre-synchronizing spring is arranged between the locking ring and the connecting block, the pre-synchronizing spring is fixedly installed on the connecting block, the pre-synchronizing spring is provided with an inward-measuring convex arc surface, and the position of the arc surface corresponds to the position of the arc groove on the locking ring.

Preferably, the boosting pin is integrally connected with the sliding disc through welding after being installed in place.

Preferably, a second friction conical surface is arranged on the inner side of the friction conical disc, and the second friction conical surface and the first friction conical surface of the synchronizing ring form a mutual friction surface.

The invention provides a self-energizing synchronizer of an automobile gearbox. The method has the following beneficial effects:

1. by arranging the force-increasing boss and the force-increasing pin, the gear is engaged in the process. The sliding disc drives the boosting pin to axially move with the synchronous ring, when a friction conical surface of the synchronous ring is contacted with a friction conical surface of the friction conical disc, friction torque is generated, the sliding disc and the boosting pin rotate under the action of the friction torque, so that a boosting surface of the boosting pin is rotationally contacted with a boosting surface of the boosting boss and is pressed, at the moment, axial component force towards the gear engaging side is generated between the boosting surfaces, the axial component force is transmitted to the sliding disc through the boosting pin and is further transmitted to the synchronous ring, so that the synchronous ring obtains an additional axial force besides gear engaging force provided by a vehicle driver during working, the gear engaging force required by the driver is reduced, and the gear engaging of the driver is lighter.

2. The tooth sleeve of the traditional lock ring type synchronizer is split into the sliding sleeve, the locking ring and the sliding disc according to functions, and the sliding sleeve assembly is formed by connecting the sliding sleeve, the locking ring and the sliding disc through the reinforcement pin, on one hand, the structure of each part is greatly simplified, the parts are processed and assembled independently, the processing cost is reduced, on the other hand, the head of the reinforcement pin is rigidly connected with the sliding disc into a whole through fixed connection, the middle part of the reinforcement pin passes through the through hole of the locking ring, the diameter of the middle part of the reinforcement pin is equal to that of the through hole of the locking ring, the sliding disc and the locking ring are rigidly connected into a whole, the middle part of the reinforcement pin passes through the waist-shaped hole of the sliding sleeve, the width of the waist-shaped hole is equal to that of the middle part of the reinforcement pin, the length of the waist-shaped hole is larger than that of the middle part of the reinforcement pin, so that the sliding disc is completely, and the force increasing surface of the force increasing boss can be always attached and pressed through circumferential rotation along with the movement of the axial position in the working process of the force increasing pin, so that the continuous force increasing effect is achieved until the gear is engaged.

3. The tail parts of the boosting boss and the boosting pin are respectively provided with the positioning surfaces, the positioning surfaces of the boosting pin and the positioning surfaces of the boosting boss are in the same shape, and the 2 groups of positioning surfaces are respectively parallel to the central axis of the synchronizer, so that the positioning surfaces of the boosting pin and the positioning surfaces of the boosting boss are in contact when the synchronizer is in a neutral gear, the relative rotation of the sliding sleeve assembly and the gear hub can be limited, the contact of the boosting pin and the boosting surfaces of the gear hub is avoided, no axial component force is generated when the synchronizer is in the neutral gear, the sliding sleeve assembly and the gear hub cannot rotate relatively in the circumferential direction and shift relatively in the axial direction when the synchronizer is in the neutral gear, and the failure risk of the synchronizer and the noise of the gearbox are.

4. Through setting up coil spring and supporting pin, can carry out radial support to the sliding sleeve through the supporting pin like this, the sliding sleeve is in order smoothly to slide on the tooth hub when the design, and the design has great clearance between its internal spline and the tooth hub external spline, through the support of supporting pin, can make sliding sleeve and tooth hub keep better axiality, avoids the sliding sleeve to deviate central point under the exogenic action such as gravity and puts, appears the jamming or hangs the condition that does not advance the shelves when leading to putting into gear.

5. 2 synchronizer rings are connected into a whole by arranging the connecting block, the synchronizer is shifted back from a gear on one side and is hung on the other side, and the friction conical surface of the synchronizer ring on the shift back side is actively separated from the friction conical surface of the friction conical disc under the action of the gear hanging force, so that the situation that the friction conical surface fails due to continuous friction due to the fact that the friction conical surface is tightly attached and is difficult to separate under the action of no external force is avoided. After the gear is engaged, the synchronizing ring on the non-gear engaging side and the synchronizing ring on the gear engaging side are integrated, so that the phenomenon that the synchronizing ring on the non-gear engaging side is in contact damage with other parts due to the fact that the synchronizing ring shakes too much is avoided.

6. The boosting pin is installed in place and then welded with the sliding disc into a whole, so that the sliding sleeve assembly can be disassembled into the sliding sleeve, the locking ring and the sliding disc according to functions and then connected through the boosting pin, the boosting function of the synchronizer is achieved, the welding process enables the boosting pin and the sliding disc to be high in connecting strength, axial boosting generated by the boosting pin can be reliably transmitted to the sliding disc, and the risk that 2 persons are mutually separated due to unreliable connection is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention in a neutral state;

FIG. 2 is a schematic view of the mounting structure of the hub gear, the sliding sleeve, the coil spring and the support pin;

FIG. 3 is a schematic view of the mounting structure of the sliding sleeve, the locking ring, the sliding disk and the force increasing pin;

FIG. 4 is an exploded view of the installation of the hub, the sleeve, the locking ring, the sliding plate and the power pin;

FIG. 5 is a schematic partial broken cross-sectional view of the mounting structure of the sliding plate, the synchronizing ring, the connecting block and the pre-synchronizing spring;

FIG. 6 is a schematic view of the structure of the gear hub;

FIG. 7 is a schematic structural view of a locking ring;

FIG. 8 is a schematic structural view of a slide plate;

FIG. 9 is a schematic view of a synchronizer ring;

FIG. 10 is a top plan view and a front view of the positional relationship between the hub force increasing boss and the force increasing pin in the neutral state;

FIG. 11 is a schematic structural diagram showing a positional relationship between a hub force-increasing boss and a force-increasing pin during a gear engaging process.

In the figure: the gear hub comprises a gear hub 1, a boosting boss 1a, a first positioning surface 1a1, a first boosting surface 1a2, a blind hole 1b, a gear wheel 2, a sliding sleeve 3, a kidney-shaped hole 3a, a socket hole 3b, a locking ring 4, a first locking surface 4a, a through hole 4b, an arc groove 4c, a sliding disc 5, a first gap 5a, a second gap 5b, a third gap 5c, a synchronizing ring 6, a locking boss 6a, a second locking surface 6a1, a gap 6b, a first friction conical surface 6c, a connecting block 7, a pre-synchronizing spring 8, an arc surface 8a, a boosting pin 9, a second positioning surface 9a, a second boosting surface 9b, a cylindrical surface 9c, a supporting pin 10, a spiral spring 11, a friction conical disc 12 and a second friction conical surface 12 a.

Detailed Description

As shown in fig. 1 to 11, the present invention provides a technical solution: a self-energizing synchronizer of an automobile gearbox comprises a gear hub 1, wherein external splines are arranged on the outer side of the gear hub 1, three pairs of energizing bosses 1a are uniformly arranged on the outer side of the gear hub 1, a first positioning surface 1a1 and a first energizing surface 1a2 are arranged on the energizing boss 1a, gear gears 2 are respectively arranged on two sides of the gear hub 1, a friction conical disc 12 is fixedly arranged on each of the two gear gears 2, a sliding sleeve 3 is slidably sleeved outside the gear hub 1, internal splines matched with the external splines of the gear hub 1 are arranged on the inner surface of the sliding sleeve 3, a kidney-shaped hole 3a corresponding to the energizing boss 1a of the gear hub 1 is further arranged on the sliding sleeve 3, a locking ring 4 is sleeved outside the sliding sleeve 3, two side surfaces of the locking ring 4 are provided with first locking surfaces 4a, and a through hole 4b is arranged in the middle of the;

the outer surface of the locking ring 4 is fixedly sleeved with a sliding disc 5, the inner surface of the sliding disc 5 is provided with a first notch 5a, a second notch 5b and a third notch 5c, the number of the second notch 5b is equal to that of the kidney-shaped holes 3a and the number of the through holes 4b, the second notch 5b is arranged corresponding to the kidney-shaped holes 3a and the positions of the through holes 4b, the second notch 5b of the inner surface of the sliding disc 5 is provided with a reinforcement pin 9, the reinforcement pin 9 sequentially penetrates through the kidney-shaped holes 3a on the sliding sleeve 3 and the through holes 4b on the locking ring 4, the top of the reinforcement pin 9 is fixedly arranged in the second notch 5b, and the tail of the reinforcement pin 9 is in sliding contact with the reinforcement boss 1a of the gear hub 1;

the outer surface of the locking ring 4 is respectively sleeved with a synchronizing ring 6 in a sliding way at the positions corresponding to the two sides of the sliding disc 5, the inner side surface of the synchronizing ring 6 is provided with a second locking surface 6a and three notches 6b which are uniformly distributed, and the outer surface of the synchronizing ring 6 is provided with a first friction conical surface 6 c.

Each force boosting boss 1a is provided with two first force boosting surfaces 1a2 and a first positioning surface 1a 1.

The tail part of the boosting pin 9 is symmetrically provided with four second boosting surfaces 9b and two second positioning surfaces 9a, the shapes of the second positioning surfaces 9a of the boosting pin 9 and the first positioning surfaces 1a1 of the boosting boss 1a are the same, the first positioning surfaces 1a1 and the second positioning surfaces 9a are respectively parallel to the central axis of the synchronizer, the shapes of the second boosting surfaces 9b of the boosting pin 9 and the first boosting surfaces 1a2 of the boosting boss 1a are the same, the middle part of the boosting pin 9 is a cylindrical surface 9c, the diameter of the cylindrical surface 9c is the same as the width of the waist-shaped hole 3a of the sliding sleeve and the diameter of the through hole 4b on the locking ring 4, the length of the waist-shaped hole 3a of the sliding sleeve is larger than the diameter of the cylindrical surface 9c of the boosting pin, the top part of the boosting pin 9 is rectangular, and the width of the top part of the boosting pin 9 is the same as the width of.

The outside of the gear hub 1 is provided with a blind hole 1b, a spiral spring 11 and a supporting pin 10 are sequentially inserted into the blind hole 1b, the spiral spring 11 outwards supports the bottom of the supporting pin 10 at the bottom of the blind hole 1b, the bottom of the supporting pin 10 is a plane, the top of the supporting pin 10 is an outer arc surface, when the sliding sleeve 3 is sleeved on the gear hub 1, the top of the supporting pin 10 pushes into a socket hole 3b of the sliding sleeve 3, and the spiral spring 11 is in a compressed state at the moment.

Be provided with connecting block 7 between two synchronizer rings 6, connecting block 7 passes the first breach 5a of sliding plate 5 and the fixed breach 6b of synchronizer ring 6 of packing into, the width of connecting block 7 equals with the width of breach 6b of synchronizer ring 6, the width of the first breach 5a of sliding plate 5 is greater than the width of connecting block 7, connecting block 7 and synchronizer ring breach 6b install through welding or interference pressure equipment mode, link two synchronizer rings 6 into an organic whole, synchronizer ring 6 inboard is equipped with locking boss 6a, the second has locking face 6a1 at locking boss 6a medial surface both ends all, synchronizer ring second locking face 6a1 equals with the quantity of locking ring 4 with the same one side first locking face 4a, the position corresponds.

Be equipped with three arc groove 4c along circumference evenly distributed on the outer disc of locking circle 4, arranged between locking circle 4 and the connecting block 7 and prefaynchronous spring 8, presynchronous spring 8 fixed mounting is equipped with the bellied cambered surface 8a of inside survey on the prefaynchronous spring 8 on the connecting block 7 in advance, and the position of cambered surface 8a corresponds with the position of arc groove 4c on the locking circle 4.

The boosting pin 9 is connected with the sliding disc 5 into a whole by welding after being installed in place, so that the sliding sleeve assembly can be disassembled into the sliding sleeve, the locking ring and the sliding disc according to functions, and then the boosting pin 9 is connected, so that the boosting function of the synchronizer is realized, the welding process ensures that the connection strength of the boosting pin 9 and the sliding disc 5 is high, the axial boosting generated by the boosting pin 9 can be reliably transmitted to the sliding disc 5, and the risk of mutual separation of 2 persons due to unreliable connection is reduced.

The inner side of the conical friction disk 12 is provided with a second conical friction surface 12a, which second conical friction surface 12a forms a mutual friction surface with the first conical friction surface 6c of the synchronizing ring 6.

When in use, firstly, the two friction conical discs 12 are respectively fixed on the two gear gears 2; then, the locking ring 4 is sleeved on the outer surface of the sliding sleeve 3, the through hole 4b corresponds to the waist-shaped hole 3a, the sliding disc 5 is sleeved on the locking ring in a sliding mode, the second notch 5b corresponds to the through hole 4b of the locking ring 4, the head of the reinforcement pin 9 sequentially penetrates through the waist-shaped hole 3a and the through hole 4b and is installed in the second notch 5b, the head of the reinforcement pin 9 is fixedly connected with the second notch 5b through welding, and at the moment, the sliding sleeve 3, the locking ring 5, the sliding disc 6 and the reinforcement pin 9 are assembled into a sliding sleeve assembly; then, the connecting block 7 passes through the first gap 5a of the sliding disc 5, the gaps 6b of the synchronizing rings 6 on the two sides are respectively and fixedly connected with the two ends of the connecting block 7, and then the pre-synchronizing spring 8 is arranged in the connecting block 7; then, the sliding sleeve assembly with the assembled synchronizing ring is slidably sleeved on the gear hub 1, so that the internal spline of the sliding sleeve 3 is meshed with the external spline of the gear hub, and when the sliding sleeve is sleeved, the socket hole 3b of the sliding sleeve 3 corresponds to the position of the supporting pin 10, so that after the sleeving is completed, the head of the supporting pin 10 is pushed into the socket hole 3b of the sliding sleeve 3, and the cambered surface 8a of the pre-synchronizing spring 8 is clamped into the arc groove 4c of the locking ring 4. At the moment, the self-energizing synchronizer assembly of the automobile gearbox and the gear on the side 2 are assembled.