Synchronizer assembly

Abstract

The synchronizer assembly comprises a tooth holder, a first gear joint sleeve, a second gear joint sleeve, a synchronizing ring and a sliding sleeve, the first gear joint sleeve and the second gear joint sleeve are coaxially arranged on the same side of the tooth holder, and the second gear joint sleeve is arranged between the first gear joint sleeve and the tooth holder; the synchronous ring is coaxially arranged on the outer side between the first gear joint sleeve and the second gear joint sleeve; the sliding sleeve is coaxially arranged on the outer side of the tooth holder, part of the sliding sleeve is arranged on the tooth holder in a sleeving mode, the other part of the sliding sleeve is arranged on the outer side of the synchronous ring, and the sliding sleeve can move towards one of the first gear joint sleeve and the second gear joint sleeve on the synchronous ring to complete gear shifting. The radial size of the synchronizer can be reduced, the structure is compact, a gearbox which is narrow in installation space and special in layout is perfectly adapted, and the design requirement for miniaturization of the gearbox is met.

Description

Technical Field

[0001] This application belongs to the field of automotive parts technology, specifically relating to a synchronizer assembly. Background Technology

[0002] The synchronizer is a key component of a mechanical gear transmission. It is responsible for shifting gears and transmitting torque, and is a critical component of the gearbox.

[0003] In related technologies, a synchronizer includes a synchronizer ring, a sliding sleeve, a first gear engagement sleeve, a second gear engagement sleeve, and a gear seat that work together. The first gear engagement sleeve and the second gear engagement sleeve are respectively disposed on both sides of the gear seat.

[0004] The design of related technologies increases the overall axial length of the synchronizer assembly, resulting in a longer overall axial layout of the transmission. This makes it unsuitable for transmissions with limited axial mounting space and unique layouts in automotive chassis, thus limiting the trend towards miniaturization and integration of transmissions. Furthermore, the need to reserve space on both sides of the gear seat for the installation and movement of the gear sleeve and synchronizer ring will compress the layout space of other core components inside the transmission (such as the input shaft, output shaft, and bearings), increasing the design complexity of the overall transmission structure. Summary of the Invention

[0005] Based on the above-mentioned technical problems, this application provides a synchronizer assembly, which aims to solve to some extent the technical problems caused by the first gear engagement sleeve and the second gear engagement sleeve being respectively disposed on both sides of the gear seat.

[0006] This application is achieved through the following technical solution: A synchronizer assembly includes: a gear seat; a first gear engagement sleeve and a second gear engagement sleeve, coaxially disposed on the same side of the gear seat, the second gear engagement sleeve being disposed between the first gear engagement sleeve and the gear seat; a synchronizing ring, coaxially disposed on the outer side between the first gear engagement sleeve and the second gear engagement sleeve; and a sliding sleeve, coaxially disposed on the outer side of the gear seat, a portion of the sliding sleeve being sleeved on the gear seat, and the other portion of the sliding sleeve being disposed on the outer side of the synchronizing ring, the sliding sleeve being movable on the synchronizing ring toward one of the first gear engagement sleeve and the second gear engagement sleeve to complete gear shifting.

[0007] In some embodiments, a first ring tooth is provided on one axial side of the outer peripheral surface of the synchronization ring, the first ring tooth being close to the first gear engagement sleeve, the first ring tooth including a plurality of annular and spaced first meshing teeth; a first engagement ring tooth is provided on the outer peripheral surface of the first gear engagement sleeve, the first engagement ring tooth and the first ring tooth being disposed opposite to each other, the first engagement ring tooth including a plurality of annular and spaced first engagement meshing teeth; a locking ring tooth is provided on the inner wall of the sliding sleeve, the locking ring tooth and the first ring tooth being disposed opposite to each other, the locking ring tooth including a plurality of annular and spaced locking teeth; wherein, in the initial state, the first engagement ring tooth, the first ring tooth, and the locking ring tooth sequentially approach the tooth seat; during the process of switching to the first gear, the sliding sleeve moves toward the first gear engagement sleeve, the locking teeth on the locking ring sequentially pass through the first meshing teeth of the first ring tooth and the first engagement meshing teeth on the first engagement ring tooth, the sliding sleeve being locked relative to the synchronization ring and the first gear engagement sleeve.

[0008] In some embodiments, the first tooth is V-shaped on the side facing the tooth holder; the first engaging tooth is V-shaped on the side facing the tooth holder; and the locking tooth is V-shaped on the side away from the tooth holder.

[0009] In some embodiments, a second ring tooth is provided on the axial side of the outer peripheral surface of the synchronizing ring, the second ring tooth being close to the second gear engagement sleeve, and the second ring tooth including a plurality of annular and spaced second teeth; the outer peripheral surface of the second gear engagement sleeve is provided with a second engagement ring tooth, the second engagement ring tooth and the second ring tooth being disposed opposite to each other, the second engagement ring tooth including a plurality of annular and spaced second engagement teeth; wherein, in the initial state, the locking ring tooth, the second ring tooth and the second engagement ring tooth sequentially approach the tooth seat; during the process of switching to the second gear, the sliding sleeve moves toward the direction of the second gear engagement sleeve, the locking tooth on the locking ring sequentially passes through the second teeth of the second ring tooth and the second engagement teeth on the second engagement ring tooth, and the sliding sleeve is locked relative to the synchronizing ring and the second gear engagement sleeve.

[0010] In some embodiments, the second tooth has a V-shape on the side facing away from the tooth holder; the second engaging tooth has a V-shape on the side facing away from the tooth holder; and the locking tooth has a V-shape on the side facing the tooth holder.

[0011] In some embodiments, the inner wall of the sliding sleeve is provided with a plurality of sliding grooves, which are spaced apart around the central axis of the sliding sleeve, and the length direction of the sliding grooves is arranged along the circumference of the sliding sleeve; the outer peripheral surface of the synchronizing ring is provided with a push block, which is arranged in a one-to-one correspondence with the sliding groove, and the push block is disposed in the corresponding sliding groove, and the push block can move in the sliding groove along the circumference of the sliding sleeve.

[0012] In some embodiments, the synchronization ring includes a first ring body and a second ring body, the first ring body facing away from the gear seat and sleeved on the first gear engagement sleeve; the second ring body facing the gear seat and sleeved on the first gear engagement sleeve.

[0013] In some implementations, the first ring body and the second ring body are detachably connected.

[0014] In some embodiments, one of the opposite sides of the first ring body and the second ring body is provided with a plurality of grooves, and the other side is provided with a plurality of protrusions, wherein the protrusions and the grooves are provided in a one-to-one correspondence, and the protrusions are inserted into the corresponding grooves.

[0015] In some embodiments, the inner wall of the sliding sleeve is provided with a plurality of first splines; the outer peripheral surface of the gear seat is provided with a plurality of second splines, and a limit stop is provided on the second splines. The first splines can slide along the axial direction of the gear seat between two adjacent second splines, and the movement position of the sliding sleeve is restricted by the limit stop.

[0016] The synchronizer assembly provided in this application enables gear shifting by controlling the movement of the sliding sleeve on the synchronizer ring towards either the first gear engagement sleeve or the second gear engagement sleeve, thus realizing the synchronizer's function. Furthermore, the first gear engagement sleeve, the second gear engagement sleeve, and the synchronizer ring used for gear shifting are all located on one side of the gear seat's axial direction; that is, the entire assembly is concentrated on the same side of the gear seat. This reduces the synchronizer's radial dimension, resulting in a compact structure that perfectly adapts to gearboxes with limited installation space and unique layouts, meeting the miniaturization design requirements of gearboxes and demonstrating excellent practicality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the synchronizer in one or more embodiments of this application is shown; Figure 2 It shows Figure 1 An explosion diagram; Figure 3 It shows Figure 1 A cross-sectional schematic diagram; Figure 4 A schematic diagram of the synchronization ring structure is shown; Figure 5 It shows Figure 4 Enlarged view of point A; Figure 6 A schematic diagram of the first gear engagement sleeve is shown; Figure 7 It shows Figure 6 Enlarged view of point B; Figure 8 A schematic diagram of the sliding sleeve is shown; Figure 9 It shows Figure 8 Enlarged diagram at point C Figure 10 A schematic diagram of the second gear engagement sleeve is shown; Figure 11 It shows Figure 10 Enlarged diagram of point D; Figure 12 A schematic diagram of the toothed seat structure is shown; Figure 13 It shows Figure 12 Enlarged diagram of point E.

[0019] Explanation of reference numerals in the attached figures: 10. Synchronizer assembly; 100. Gear seat; 110. Second spline; 111. Limit stop; 200. First gear engagement sleeve; 210. First engagement ring tooth; 211. First engagement meshing tooth; 212. Second locking angle; 300. Second gear engagement sleeve; 310. Second engagement ring tooth; 311. Second engagement meshing tooth; 312. Fifth locking angle; 400, Synchronizing ring; 410, First ring tooth; 411, First meshing tooth; 412, First locking angle; 420, Second ring tooth; 421, Second meshing tooth; 422, Fourth locking angle; 430, Push block; 440, First ring body; 450, Second ring body; 460, Groove; 470, Protrusion; 480, Pin hole; 500, Sliding sleeve; 510, Locking ring tooth; 511, Locking tooth; 512, Third locking angle; 513, Sixth locking angle; 520, Sliding groove; 530, First spline. Detailed Implementation

[0020] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] Based on the problems presented in the background art, this application provides a synchronizer assembly 10, in which the first gear engagement sleeve 200, the second gear engagement sleeve 300, and the synchronizer ring 400, used for shifting, are all disposed on one side of the axial direction of the gear seat 100. That is, the entire assembly is concentrated on the same side of the gear seat 100, which reduces the radial dimension of the synchronizer, resulting in a compact structure that perfectly adapts to gearboxes with limited installation space and unique layouts, meeting the miniaturization design requirements of gearboxes. The specific details of this synchronizer assembly 10 are now further described with reference to the accompanying drawings.

[0022] Figure 1 A schematic diagram of the synchronizer in one or more embodiments of this application is shown. Figure 2 It shows Figure 1 An explosion diagram. Figure 3 It shows Figure 1 A cross-sectional schematic diagram. (Connection) Figures 1-3 The synchronizer assembly 10 provided in this application includes a gear seat 100, a first gear engagement sleeve 200, a second gear engagement sleeve 300, a synchronizer ring 400, and a sliding sleeve 500. The first gear engagement sleeve 200 and the second gear engagement sleeve 300 are coaxially disposed on the same side of the gear seat 100, and the second gear engagement sleeve 300 is disposed between the first gear engagement sleeve 200 and the gear seat 100. The synchronizer ring 400 is coaxially disposed on the outer side between the first gear engagement sleeve 200 and the second gear engagement sleeve 300. The sliding sleeve 500 is coaxially disposed on the outer side of the gear seat 100, with a portion of the sliding sleeve 500 sleeved on the gear seat 100 and the other portion disposed on the outer side of the synchronizer ring 400. The sliding sleeve 500 can move on the synchronizer ring 400 toward one of the first gear engagement sleeve 200 and the second gear engagement sleeve 300 to complete gear shifting.

[0023] In practice, the first gear engagement sleeve 200 and the second gear engagement sleeve 300 are sleeved on the input shaft, and the gear seat 100 is sleeved on the output shaft. The first gear engagement sleeve 200 or the second gear engagement sleeve 300 receives power from the input shaft and rotates. When the sliding sleeve 500 moves axially along the gear seat 100 and engages with the first gear engagement sleeve 200 or the second gear engagement sleeve 300, the power is transmitted to the sliding sleeve 500 through the first gear engagement sleeve 200 or the second gear engagement sleeve 300. The sliding sleeve 500 then transmits the power to the output shaft through the gear seat 100, thereby driving the output shaft to rotate and ultimately achieving gear switching.

[0024] Figure 4 A schematic diagram of the synchronization loop is shown. Figure 5 It shows Figure 4 Enlarged diagram of point A. (Connection) Figure 4 as well as Figure 5 In some embodiments, a first ring tooth 410 is provided on one axial side of the outer peripheral surface of the synchronization ring 400. The first ring tooth 410 is close to the first gear engagement sleeve 200. The first ring tooth 410 includes a plurality of first meshing teeth 411 arranged in a ring shape and spaced apart. Figure 6 A schematic diagram of the first gear engagement sleeve is shown. Figure 7 It shows Figure 6 Enlarged diagram at point B, combined Figure 6 as well as Figure 7 The outer peripheral surface of the first gear engagement sleeve 200 is provided with a first engagement ring tooth 210. The first engagement ring tooth 210 and the first ring tooth 410 are arranged opposite to each other. The first engagement ring tooth 210 includes a plurality of first engagement teeth 211 arranged in a ring shape and spaced apart. Figure 8 A schematic diagram of the sliding sleeve is shown. Figure 9 It shows Figure 8 Enlarged diagram at point C, combined Figure 8 as well as Figure 9 The inner wall of the sliding sleeve 500 is provided with locking ring teeth 510, which are arranged opposite to the first ring teeth 410. The locking ring teeth 510 includes a plurality of locking teeth 511 arranged in a ring shape and spaced apart. In the initial state, the first engaging ring teeth 210, the first ring teeth 410 and the locking ring teeth 510 approach the gear seat 100 in sequence, and the sliding sleeve 500 and the first gear engagement sleeve are separated, so power cannot be transmitted to the sliding sleeve 500 through the first gear engagement sleeve. During the process of switching to the first gear, the sliding sleeve 500 moves towards the first gear engagement sleeve 200, and the locking teeth 511 on the locking ring teeth 511 pass through the first meshing teeth 411 of the first ring teeth 410 and the first engaging meshing teeth 211 on the first engaging ring teeth 210 in sequence. The sliding sleeve 500 locks relative to the synchronizing ring 400 and the first gear engagement sleeve 200, and the power is transmitted to the sliding sleeve 500 through the first gear engagement sleeve to switch to the first gear.

[0025] join Figures 4-9 In some embodiments, the first tooth 411 is V-shaped on the side facing the tooth base 100 to form a first locking angle 412; the first engaging tooth 211 is also V-shaped on the side facing the tooth base 100 to form a second locking angle 212; and the locking tooth 511 is also V-shaped on the side away from the tooth base 100 to form a third locking angle 512. With this configuration, when the sliding sleeve 500 moves toward the first gear engagement sleeve 200, the third locking angle 512 of the locking tooth 511 interacts with the first locking angle 412 of the first meshing tooth 411 to form a mechanical lock, preventing forced engagement. At the instant the speed difference is eliminated, the lock is released, the locking tooth 511 of the sliding sleeve 500 passes over the first meshing tooth 411, and the third locking angle 512 of the locking tooth 511 interacts with the second locking angle 212 of the first engagement tooth 211 to form a mechanical lock, preventing forced engagement. At the instant the speed difference is eliminated, the locking tooth 511 inserts into the first engagement tooth 211, allowing the locking tooth 511 to smoothly engage with the first gear engagement sleeve 200, achieving smooth and shock-free gear shifting.

[0026] In some embodiments, engagement Figure 4 as well as Figure 5 A second ring tooth 420 is provided on the other side of the outer peripheral surface of the synchronizing ring 400. The second ring tooth 420 is close to the second gear engagement sleeve 300. The second ring tooth 420 includes a plurality of second meshing teeth 421 arranged in a ring shape and spaced apart. Figure 10 A schematic diagram of the second gear engagement sleeve is shown. Figure 11 It shows Figure 10 Enlarged diagram at point D, combined Figure 10 as well as Figure 11 The outer circumferential surface of the second gear engagement sleeve 300 is provided with a second engagement ring tooth 310. The second engagement ring tooth 310 and the second ring tooth 420 are arranged opposite to each other. The second engagement ring tooth 310 includes a plurality of second engagement teeth 311 arranged in a ring shape and spaced apart. In the initial state, the locking ring tooth 510, the second ring tooth 420 and the second engagement ring tooth 310 approach the tooth seat 100 in sequence, and the sliding sleeve 500 and the second gear engagement sleeve are separated. Power cannot be transmitted to the sliding sleeve 500 through the second gear engagement sleeve. During the process of switching to the second gear, the sliding sleeve 500 moves towards the second gear engagement sleeve 300. The locking teeth 511 on the locking tooth ring 511 pass through the second teeth 421 of the second ring tooth 420 and the second engagement teeth 311 on the second engagement ring tooth 310 in sequence. The sliding sleeve 500 is locked relative to the synchronizing ring 400 and the second gear engagement sleeve 300. Power is transmitted to the sliding sleeve 500 through the second gear engagement sleeve to switch to the second gear.

[0027] join Figure 5 , Figure 9 as well as Figure 11In some embodiments, the side of the second tooth 421 facing away from the tooth seat 100 is V-shaped to form a fourth locking angle 422; the side of the second engaging tooth 311 facing away from the tooth seat 100 is also V-shaped to form a fifth locking angle 312; the side of the locking tooth 511 facing the tooth seat 100 is also V-shaped to form a sixth locking angle 513, so that the locking tooth 511 can smoothly engage with the first gear engagement sleeve 200 to achieve smooth and shock-free gear shifting.

[0028] As can be seen from the above, the synchronizer assembly 10 provided in this application has three working positions. The initial position is the neutral position, in which the sliding sleeve 500 is separated from both the first gear engagement sleeve 200 and the second gear engagement sleeve 300. When the sliding sleeve 500 is engaged and locked with the first gear engagement sleeve 200 and separated from the second gear engagement sleeve 300, the synchronizer assembly 10 is in the first gear position. When the sliding sleeve 500 is engaged and locked with the second gear engagement sleeve 300 and separated from the first gear engagement sleeve 200, the synchronizer assembly 10 is in the second gear position.

[0029] join Figure 8 as well as Figure 9 In some embodiments, the inner wall of the sliding sleeve 500 is provided with a plurality of sliding grooves 520, which are spaced apart around the central axis of the sliding sleeve 500, and the length direction of the sliding grooves 520 is arranged along the circumference of the sliding sleeve 500; engagement Figure 6 as well as Figure 7 The outer circumferential surface of the synchronizing ring 400 is provided with push blocks 430, and push blocks 430 and slide grooves 520 are arranged in a one-to-one correspondence. The push blocks 430 are set in the corresponding slide grooves 520 and can move in the slide grooves 520 along the circumference of the sliding sleeve 500. When the locking teeth 511 of the sliding sleeve 500 are mechanically locked with the first meshing teeth or the second meshing teeth, there is a speed difference between the sliding sleeve 500 and the synchronizing ring 400. The push blocks 430 on the synchronizing ring 400 move in the slide grooves 520 of the sliding sleeve 500 until the synchronizing ring 400 and the sliding sleeve 500 rotate at the same speed, thereby eliminating the speed difference, and the locking teeth 511 can proceed to the next stroke.

[0030] join Figure 6 as well as Figure 7 In some embodiments, the synchronizing ring 400 includes a first ring body 440 and a second ring body 450. The first ring body 440 faces away from the gear seat 100 and is sleeved on the first gear engagement sleeve 200. The second ring body 450 faces the gear seat 100 and is sleeved on the second gear engagement sleeve 300. The first ring tooth 410 is disposed on the outer peripheral surface of the first ring body 440, and the second ring tooth 420 is disposed on the outer peripheral surface of the second ring body 450, to accommodate the technical solution that the first gear engagement sleeve 200, the second gear engagement sleeve 300, and the synchronizing ring 400 are all disposed on one side of the axial direction of the gear seat 100.

[0031] In some embodiments, the first ring body 440 and the second ring body 450 can be connected separately. That is, the synchronizer ring 400 is split into two independent components to facilitate the assembly of the synchronizer ring 400 on the first gear engagement sleeve and the second gear engagement sleeve, which meets the design requirements of miniaturization and weight reduction of the gearbox.

[0032] join Figure 4 In some embodiments, the opposite sides of the first ring body 440 and the second ring body 450 are inserted together. For example, the opposite sides of the first ring body 440 and the second ring body 450 are provided with a plurality of grooves 460 and a plurality of protrusions 470. The protrusions 470 and the grooves 460 are arranged in a one-to-one correspondence. The protrusions 470 are inserted into the corresponding grooves 460, so that the first ring body 440 and the second ring body 450 can rotate synchronously when separated. The structure is simple and reliable, and the force is more uniform when transmitting torque, and it is not easy to deform or crack.

[0033] join Figure 4 In some embodiments, the first ring body 440 and the second ring body 450 are also provided with pin holes 480 so that a pin can pass through the pin holes 480, thereby further ensuring the reliability of the connection between the two.

[0034] join Figure 8 as well as Figure 9 In some embodiments, the inner wall of the sliding sleeve 500 is provided with a plurality of first splines 530; Figure 12 A schematic diagram of the tooth holder structure is shown. Figure 13 It shows Figure 12 Enlarged diagram at point E, combined Figure 12 as well as Figure 13 The outer peripheral surface of the gear seat 100 is provided with multiple second splines 110. Multiple first splines 530 and multiple second splines 110 mesh with each other to drive the gear seat 100 and Hua'ao to rotate synchronously. Furthermore, the first spline 530 can slide along the axial direction of the gear seat 100 between two adjacent second splines 110. When the sliding sleeve 500 is driven to slide by the shift fork of the gearbox shift mechanism, the movement direction of the sliding sleeve 500 can be guaranteed by the guidance of the splines.

[0035] In addition, the joint Figure 12 as well as Figure 13 In some embodiments, a limit stop 111 is provided on the second spline 110 to limit the movement of the sliding sleeve 500. For example, the limit stop 111 is provided on the outer side of the end of the second spline 110 away from the second gear engagement sleeve, so as to limit the movement of the sliding sleeve 500 while ensuring that the overall length of the synchronization ring 400 assembly does not increase.

[0036] In summary, the synchronizer assembly 10 provided in this application enables gear shifting by controlling the movement of the sliding sleeve 500 on the synchronizer ring 400 towards either the first gear engagement sleeve 200 or the second gear engagement sleeve 300, thus realizing the synchronizer's function. Furthermore, the first gear engagement sleeve 200, the second gear engagement sleeve 300, and the synchronizer ring 400, used for gear shifting, are all located on one side of the gear seat 100's axial direction; that is, the entire assembly is concentrated on the same side of the gear seat 100. This reduces the synchronizer's radial dimension, resulting in a compact structure that perfectly suits gearboxes with limited installation space and unique layouts, meeting the miniaturization design requirements of gearboxes and demonstrating excellent practicality.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A synchronizer assembly, characterized in that, The synchronizer assembly includes: Tooth base; The first gear engagement sleeve and the second gear engagement sleeve are coaxially disposed on the same side of the gear seat, and the second gear engagement sleeve is disposed between the first gear engagement sleeve and the gear seat. A synchronization ring is coaxially disposed on the outer side between the first gear engagement sleeve and the second gear engagement sleeve; A sliding sleeve is coaxially disposed on the outside of the gear seat. Part of the sliding sleeve is sleeved on the gear seat, and the other part of the sliding sleeve is disposed on the outside of the synchronizing ring. The sliding sleeve can move on the synchronizing ring toward one of the first gear engagement sleeve and the second gear engagement sleeve to complete gear shifting.

2. A synchronizer assembly according to claim 1, characterized in that, The outer peripheral surface of the synchronization ring is provided with a first ring tooth on one side of the axial direction. The first ring tooth is close to the first gear engagement sleeve. The first ring tooth includes a plurality of first meshing teeth arranged in a ring shape and spaced apart. The outer peripheral surface of the first gear engagement sleeve is provided with a first engagement ring tooth, the first engagement ring tooth and the first ring tooth are arranged opposite to each other, and the first engagement ring tooth includes a plurality of first engagement teeth arranged in a ring shape and spaced apart. The inner wall of the sliding sleeve is provided with locking ring teeth, which are arranged opposite to the first ring teeth. The locking ring teeth include a plurality of locking teeth arranged in a ring shape and spaced apart. In the initial state, the first engaging ring tooth, the first ring tooth, and the locking ring tooth sequentially approach the tooth seat; During the process of switching to the first gear, the sliding sleeve moves toward the first gear engagement sleeve, and the locking teeth on the locking ring pass through the first meshing teeth of the first ring teeth and the first engagement teeth on the first engagement ring teeth in sequence, and the sliding sleeve is locked relative to the synchronization ring and the first gear engagement sleeve.

3. A synchronizer assembly according to claim 2, characterized in that, The first tooth is V-shaped on the side facing the tooth seat; The first engaging tooth is V-shaped on the side facing the tooth seat; The locking tooth is V-shaped on the side facing away from the tooth seat.

4. A synchronizer assembly according to claim 2, characterized in that, A second ring tooth is provided on the other side of the axial direction of the outer peripheral surface of the synchronization ring. The second ring tooth is close to the second gear engagement sleeve. The second ring tooth includes a plurality of second meshing teeth arranged in a ring shape and spaced apart. The outer circumferential surface of the second gear engagement sleeve is provided with a second engagement ring tooth, the second engagement ring tooth and the second ring tooth are arranged opposite to each other, and the second engagement ring tooth includes a plurality of second engagement teeth arranged in a ring shape and spaced apart. In the initial state, the locking ring tooth, the second ring tooth, and the second engaging ring tooth sequentially approach the tooth seat; During the process of switching to the second gear, the sliding sleeve moves toward the second gear engagement sleeve, and the locking teeth on the locking ring pass through the second meshing teeth of the second ring teeth and the second engagement meshing teeth on the second engagement ring teeth in sequence, and the sliding sleeve is locked relative to the synchronizing ring and the second gear engagement sleeve.

5. A synchronizer assembly according to claim 4, characterized in that, The side of the second tooth facing away from the tooth seat is V-shaped; The second engaging tooth has a V-shape on the side facing away from the tooth seat; The locking tooth is V-shaped on the side facing the tooth seat.

6. A synchronizer assembly according to claim 5, characterized in that, The inner wall of the sliding sleeve is provided with a plurality of sliding grooves, which are spaced apart around the central axis of the sliding sleeve, and the length direction of the sliding grooves is arranged along the circumference of the sliding sleeve. The outer circumferential surface of the synchronization ring is provided with a push block, and the push block and the slide groove are arranged in a one-to-one correspondence. The push block is disposed in the corresponding slide groove and can move in the slide groove along the circumferential direction of the sliding sleeve.

7. A synchronizer assembly according to any one of claims 1-6, characterized in that, The synchronization ring includes a first ring body and a second ring body. The first ring body faces away from the gear seat and is sleeved on the first gear engagement sleeve. The second ring body faces the gear seat and is sleeved on the first gear engagement sleeve.

8. A synchronizer assembly according to claim 7, characterized in that, The first ring body and the second ring body are detachably connected.

9. A synchronizer assembly according to claim 8, characterized in that, The first ring body and the second ring body have multiple grooves on one side of their opposite sides and multiple protrusions on the other side. The protrusions and grooves are arranged in a one-to-one correspondence and the protrusions are inserted into the corresponding grooves.

10. A synchronizer assembly according to any one of claims 1-6, characterized in that, The inner wall of the sliding sleeve is provided with a plurality of first splines; the outer peripheral surface of the gear seat is provided with a plurality of second splines, and a limit stop is provided on the second splines. The first splines can slide along the axial direction of the gear seat between two adjacent second splines, and the movement position of the sliding sleeve is restricted by the limit stop.

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