High-rotating-speed synchronizer assembly

Abstract

The utility model discloses a high-rotating-speed synchronizer assembly which comprises a gear hub, a positioning push block, a connecting tension spring, a synchronizing ring, a conical hub and a sliding gear sleeve. The positioning push blocks and the connecting tension springs are evenly arranged on the outer ring of the gear hub in the circumferential direction, the synchronizing rings are symmetrically arranged on the two sides of the gear hub, and the synchronizing rings on the two sides are connected through the connecting tension springs. The sliding gear sleeve enters the conical hub, the synchronizing ring is separated from the conical surface of the conical hub under the action of the connecting tension spring, the friction probability of the conical surface of the synchronizing ring and the conical surface of the conical hub is reduced, and when the synchronizing ring is separated from the conical surface of the conical hub, the synchronizing ring moves along with the gear hub under the action of friction force of the first centering conical surface and the second centering conical surface. On one hand, the positioning push block can position the sliding gear sleeve, and on the other hand, the positioning push block can push the synchronous ring to move during gear shifting.

Description

Technical Field

[0001] The utility model relates to the technical field of synchronizers for automobile gearboxes, in particular to a high-speed synchronizer assembly. Background Art

[0002] The working principle of the existing automobile synchronizer is as follows: the sliding gear sleeve and the gear hub, the gear hub and the transmission shaft are all meshed through splines, and the gear is mounted on the transmission shaft through a bearing sleeve. When shifting gears is required, the shift fork shifts the gear sleeve to the gear to be shifted in, and before the bevel hub fixedly connected to the gear to be shifted in is meshed with the sliding gear sleeve, the synchronizer cone ring is first combined, and the rotation speeds of the gear hub and the bevel hub are quickly synchronized through the friction between the cone surfaces, that is, the synchronizer sliding gear sleeve is quickly synchronized with the rotation speed of the gear to be shifted in. At this time, the gear cone hub to be shifted in is meshed with the synchronizer sliding gear sleeve, the shifting process is completed, and the power is transmitted from the gear to be shifted in to the transmission shaft, driving the car to continue driving. In the existing synchronizer, the synchronizer ring is arranged between the cone hub and the gear hub. One side of the synchronizer ring is positioned by the cone surface of the cone hub, and the other side is positioned by the end surface of the gear hub. It can move axially. When in neutral, there is a speed difference between the synchronizer ring and the cone hubs on both sides. After one side is engaged, there is a speed difference between the synchronizer ring on the other side and the cone hub on the other side. Due to the axial movement of the synchronizer ring, the synchronizer ring and the cone hub will generate a certain friction torque, thereby increasing the overall drag torque of the gearbox and reducing the transmission efficiency of the gearbox. In the new energy gearbox, the speed difference will be very large, which will greatly increase the wear of the synchronizer ring and also generate considerable noise. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a high-speed synchronizer assembly, and the utility model is achieved through the following technical solutions.

[0004] A high-speed synchronizer assembly comprises a gear hub, a positioning push block, a connecting tension spring, a synchronizer ring, a cone hub and a sliding gear sleeve; the positioning push block and the connecting tension spring are evenly arranged on the outer ring of the gear hub, the positioning push block and the connecting tension spring are staggered, the synchronizer ring is symmetrically arranged on both sides of the gear hub, the synchronizer rings on both sides are connected by the connecting tension spring, the cone hub is arranged on the outer side of the synchronizer ring, the cone hub and the synchronizer ring are connected by a cone surface, and the inner ring of the sliding gear sleeve is meshed with the gear hub, the synchronizer ring, and the teeth on the cone hub.

[0005] Preferably, the connecting tension spring and the positioning push block are provided at least three locations.

[0006] Preferably, a tension spring groove is provided on the gear hub, the connecting tension spring is located in the tension spring groove, and a first boss adapted to the tension spring groove is integrally formed on one side of the synchronous rings close to each other.

[0007] Preferably, a tension spring hole is formed on the first boss, and hooks are provided at both ends of the connecting tension spring, and the hooks are connected to the tension spring hole.

[0008] Preferably, the inner wall of the sliding gear sleeve is provided with a through groove for the connecting tension spring to pass through.

[0009] Preferably, a push block groove is provided on the gear hub, and the positioning push block is movably installed in the push block groove.

[0010] Preferably, a second boss adapted to the push block groove is integrally formed on one side of the synchronizer rings that is close to each other.

[0011] Preferably, a first centering conical surface is provided on one side of the synchronizer ring that is close to each other, and a second centering conical surface that matches the first centering conical surface is provided on the web of the gear hub.

[0012] Preferably, the positioning push block comprises a T-shaped mounting tube, a positioning ball is connected to the mounting tube via a top spring, and a positioning semicircular hole corresponding to the positioning ball is formed in the inner ring of the sliding gear sleeve.

[0013] Preferably, when the positioning ball enters the positioning semicircular hole, the top spring is in a compressed state.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The synchronizer rings on both sides are connected by connecting tension springs, and the cone hub and synchronizer ring are connected by cone surfaces. When shifting gears, the synchronizer ring and the cone hub are synchronized by mutual friction of the cone surfaces, and then the sliding gear sleeve enters the cone hub. Then, under the action of the connecting tension springs, the synchronizer rings approach each other, so that the cone surfaces of the synchronizer ring and the cone hub are separated, reducing the friction probability between the cone surfaces of the synchronizer ring and the cone hub, reducing the wear of the synchronizer ring, and also effectively reducing noise.

[0016] 2. A first centering cone surface and a second centering cone surface are respectively provided on the synchronizer ring and the gear hub. When the connecting tension spring tightens the synchronizer rings on both sides, the two centering cone surfaces come into play, that is, when the synchronizer ring is separated from the cone surface of the cone hub, the synchronizer ring moves with the gear hub under the friction force of the first centering cone surface and the second centering cone surface.

[0017] 3. A positioning push block is provided, which includes a mounting tube, and a positioning ball is connected to the mounting tube through a top spring. On the one hand, it can position the sliding gear sleeve, and on the other hand, it can also push the synchronizer ring to move when shifting gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 : A cross-sectional view of a high-speed synchronizer assembly according to the utility model;

[0020] Figure 2 : Figure 1 A partial enlarged view of point A shown;

[0021] Figure 3 : An exploded view of a high-speed synchronizer assembly according to the utility model;

[0022] Figure 4 : A three-dimensional schematic diagram of the gear hub of the utility model;

[0023] Figure 5 : A three-dimensional schematic diagram of the synchronization ring of the utility model;

[0024] Figure 6 : A three-dimensional schematic diagram of the synchronization ring of the utility model from another angle;

[0025] Figure 7 : A three-dimensional schematic diagram of the connecting tension spring of the utility model;

[0026] Figure 8 : A three-dimensional schematic diagram of the sliding gear sleeve of the utility model.

[0027] The reference numerals are as follows:

[0028] 1-gear hub, 2-positioning push block, 201-installing cylinder, 202-top spring, 203-positioning ball, 3-connecting tension spring, 4-synchronizing ring, 5-conical hub, 6-sliding gear sleeve, 7-tension spring groove, 8-first boss, 9-tension spring hole, 10-hook, 11-through groove, 12-push block groove, 13-second boss, 14-first centering cone surface, 15-second centering cone surface. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1-8 As shown, a high-speed synchronizer assembly includes a gear hub 1, a positioning push block 2, a connecting tension spring 3, a synchronizer ring 4, a cone hub 5 and a sliding gear sleeve 6; the positioning push block 2 and the connecting tension spring 3 are evenly arranged on the outer ring of the gear hub 1, the positioning push block 2 and the connecting tension spring 3 are staggered, the synchronizer ring 4 is symmetrically arranged on both sides of the gear hub 1, the synchronizer rings 4 on both sides are connected by the connecting tension spring 3, the cone hub 5 is arranged on the outside of the synchronizer ring 4, the cone hub 5 and the synchronizer ring 4 are connected by a conical surface, and the inner ring of the sliding gear sleeve 6 is meshed with the gear hub 1, the synchronizer ring 4, and the teeth on the cone hub 5.

[0031] Furthermore, at least three locations are provided to connect the tension spring 3 and the positioning push block 2 .

[0032] Furthermore, a tension spring groove 7 is formed on the gear hub 1 , the connecting tension spring 3 is located in the tension spring groove 7 , and a first boss 8 adapted to the tension spring groove 7 is integrally formed on the side of the synchronizer ring 4 that is close to each other.

[0033] Furthermore, a tension spring hole 9 is formed on the first boss 8 , and hooks 10 are provided at both ends of the tension spring 3 , and the hooks 10 are connected to the tension spring hole 9 .

[0034] Furthermore, the inner wall of the sliding gear sleeve 6 is provided with a through groove 11 for the connecting tension spring 3 to pass through.

[0035] Furthermore, a push block groove 12 is provided on the gear hub 1 , and the positioning push block 2 is movably installed in the push block groove 12 .

[0036] Furthermore, a second boss 13 adapted to the push block groove 12 is integrally formed on one side of the synchronizer ring 4 that is close to each other.

[0037] Furthermore, a first centering cone surface 14 is provided on one side of the synchronizer ring 4 that is close to each other, and a second centering cone surface 15 that matches the first centering cone surface 14 is provided on the web of the gear hub 1 .

[0038] Furthermore, the positioning push block 2 includes a T-shaped mounting tube 201, in which a positioning ball 203 is connected via a top spring 202, and the inner ring of the sliding gear sleeve 6 is provided with a positioning semicircular hole (not shown) corresponding to the positioning ball 203.

[0039] Furthermore, when the positioning ball 203 enters the positioning semicircular hole, the top spring 202 is in a compressed state.

[0040] A specific implementation of the utility model is:

[0041] like Figure 1 As shown, before the gear shift, the sliding gear sleeve 6 is located outside the two synchronizer rings 4 and the gear hub 1 , and the top spring 202 pushes the positioning ball 203 into the positioning semicircular hole, thereby positioning the sliding gear sleeve 6 .

[0042] When shifting gears, the positioning push block 2 moves to drive the sliding gear sleeve 6 to one side (assuming it moves to the left), and the positioning push block 2 drives the synchronizer ring 4 on the left to move. In this process, the synchronizer block cooperates with the conical surface on the cone hub 5. Under the action of friction, the synchronizer ring 4 and the cone hub 5 are roughly synchronized, and the sliding gear sleeve 6 and the synchronizer ring 4 rotate synchronously, that is, the synchronizer sleeve and the cone hub 5 are roughly synchronized. At this time, the sliding gear sleeve 6 enters the cone hub 5 and separates from the synchronizer ring 4. At this time, the connecting tension spring 3 pulls the synchronizer ring 4 to reset, so that the conical surfaces of the synchronizer ring 4 and the cone hub 5 are separated from each other, reducing the probability of friction between the conical surfaces of the synchronizer ring 4 and the conical surfaces of the cone hub 5, and reducing the wear of the synchronizer ring 4.

[0043] When the conical surfaces of the synchronizer ring 4 and the conical hub 5 are separated from each other, the synchronizer ring 4 moves along with the gear hub 1 under the friction force of the first centering conical surface 14 and the second centering conical surface 15 .

[0044] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high speed synchronizer assembly, characterized in that: The invention comprises a gear hub (1), a positioning push block (2), a connecting tension spring (3), a synchronous ring (4), a conical hub (5) and a sliding gear sleeve (6); the positioning push block (2) and the connecting tension spring (3) are evenly arranged on the outer ring of the gear hub (1), the positioning push block (2) and the connecting tension spring (3) are arranged alternately, the synchronous ring (4) is symmetrically arranged on both sides of the gear hub (1), the synchronous rings (4) on both sides are connected by the connecting tension spring (3), the conical hub (5) is arranged on the outer side of the synchronous ring (4), the conical hub (5) and the synchronous ring (4) are connected by a conical surface, and the inner ring of the sliding gear sleeve (6) is meshed with the gear hub (1), the synchronous ring (4) and the teeth on the conical hub (5).

2. A high speed synchronizer assembly according to claim 1, characterized in that: The connecting tension spring (3) and the positioning push block (2) are provided at least at three locations.

3. A high speed synchronizer assembly according to claim 2, characterized in that: The gear hub (1) is provided with a tension spring groove (7), the connecting tension spring (3) is located in the tension spring groove (7), and a first boss (8) adapted to the tension spring groove (7) is integrally formed on the side of the synchronous ring (4) close to each other.

4. A high speed synchronizer assembly according to claim 3, characterized in that: A tension spring hole (9) is provided on the first boss (8), and hooks (10) are provided at both ends of the connecting tension spring (3), and the hooks (10) are connected to the tension spring hole (9).

5. A high speed synchronizer assembly according to claim 3, characterized in that: The inner wall of the sliding gear sleeve (6) is provided with a through groove (11) for the connecting tension spring (3) to pass through.

6. A high speed synchronizer assembly according to claim 2, characterized in that: The gear hub (1) is provided with a push block groove (12), and the positioning push block (2) is movably installed in the push block groove (12).

7. A high speed synchronizer assembly according to claim 6, characterized in that: A second boss (13) adapted to the push block groove (12) is integrally formed on one side of the synchronizer ring (4) that is close to each other.

8. The high speed synchronizer assembly according to claim 6, characterized in that: A first centering cone surface (14) is provided on one side of the synchronous ring (4) that is close to each other, and a second centering cone surface (15) that matches the first centering cone surface (14) is provided on the web of the gear hub (1).

9. A high speed synchronizer assembly according to claim 6, characterized in that: The positioning push block (2) comprises a T-shaped mounting tube (201), a positioning ball (203) is connected to the mounting tube (201) via a top spring (202), and a positioning semicircular hole corresponding to the positioning ball (203) is formed in the inner ring of the sliding gear sleeve (6).

10. A high speed synchronizer assembly according to claim 9, characterized in that: When the positioning ball (203) enters the positioning semicircular hole, the top spring (202) is in a compressed state.

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