Unilateral synchronizer assembly without snap ring structure

Abstract

The utility model relates to the technical field of unilateral synchronizers, in particular to a unilateral synchronizer assembly without a snap ring structure, which comprises a synchronizer gear sleeve, a spline arranged in the synchronizer gear sleeve, a half spline arranged in the synchronizer gear sleeve, a synchronizer gear hub arranged on one side face of the half spline, a first half key arranged on the synchronizer gear hub, and a second half key arranged on the second half key. The synchronizer gear hub is provided with staggered grooves, the other side face of the half spline is provided with a synchronizing ring, the synchronizing ring is provided with a second half key, the synchronizing ring is provided with a protruding block, one side face of the synchronizing ring is provided with a sliding sleeve, a compressed spring is arranged in the half spline, the top end and the bottom end of the compressed spring are symmetrically provided with fixing plates, and sliding blocks are arranged in the fixing plates. By means of the structure of the half splines, the half keys, the staggered grooves, the protruding blocks, the sliding sleeves, the compression springs and the fixing plates, the problems that in the gear shifting process of a traditional synchronizer assembly, distribution of gear shifting force is often not uniform enough, some components bear too large loads, and abrasion and aging of the components are accelerated are solved.

Description

Technical Field

[0001] This utility model relates to the field of single-sided synchronizer technology, specifically a single-sided synchronizer assembly with a ringless structure. Background Technology

[0002] Synchronizers utilize the principle of friction to enable the rotating parts on one side of the synchronizer to engage synchronously with the rotating parts on the other side, ensuring that gear meshing is not impacted and achieving smooth and rapid gear shifting. This can eliminate noise, reduce or avoid impact wear, extend the service life of components, improve the comfort and stability of the car, and reduce costs.

[0003] In traditional synchronizer assemblies, the distribution of shifting force is often uneven during gear shifting, causing some components to bear excessive load, which accelerates the wear and aging of the components.

[0004] Therefore, it is particularly important to design a single-sided synchronizer assembly with a ringless structure to overcome the above-mentioned technical defects and improve the overall practicality. Utility Model Content

[0005] The purpose of this invention is to provide a single-sided synchronizer assembly with a ringless structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A single-sided synchronizer assembly with a snap ring-less structure includes a synchronizer sleeve, a spline inside the synchronizer sleeve, a half-spline inside the synchronizer sleeve, a synchronizer hub on one side of the half-spline, a first half-key on the synchronizer hub, a staggered groove on the synchronizer hub, a synchronizer ring on the other side of the half-spline, a second half-key on the synchronizer ring, a protrusion on the synchronizer ring, a sliding sleeve on one side of the synchronizer ring, a compression spring inside the half-spline, and fixed plates symmetrically arranged at the top and bottom of the compression spring, with a slider inside the fixed plate.

[0008] As a preferred embodiment of this utility model, the protrusion and the sliding sleeve are provided with recessed grooves for matching the slider.

[0009] As a preferred embodiment of this utility model, the half spline, staggered groove, first half key, and protrusion are respectively provided in three groups.

[0010] As a preferred embodiment of this utility model, the second half key is provided with full keys on both sides for matching with the spline, the half spline is matched with the first half key and the second half key, and the staggered groove is matched with the protrusion.

[0011] As a preferred embodiment of this utility model, the two sliding sleeves are disposed inside the top and bottom ends of the synchronizer gear sleeve, and the sliding sleeves and the synchronizer gear sleeve are slidably connected.

[0012] As a preferred embodiment of this utility model, the fixing plate and the half spline are fixedly connected.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model utilizes a single-sided synchronizer assembly with a snap-ring-free structure. This assembly employs a structure of half-splines, half-keys, staggered slots, protrusions, sliding sleeves, compression springs, and a fixing plate. During gear shifting, the spline of the synchronizer sleeve engages with the input shaft, and the half-splines adapt to the half-keys of the synchronizer hub and synchronizer ring. The shifting force acts on the sleeve and sliding sleeve, causing the synchronizer ring to rotate against the conical surface of the hub. Due to the speed difference, the synchronizer ring rotates through an angle and is positioned with the protrusions and staggered slots of the hub. After the frictional torque overcomes the inertial torque, the synchronizer ring returns to its original position, and all components reset. The design of multiple sets of half-splines, staggered slots, first half-keys, and protrusions ensures a uniform distribution of shifting force, improving the stability and durability of the synchronizer assembly. This solves the problem that in traditional synchronizer assemblies, the distribution of shifting force is often uneven during shifting, leading to excessive loads on certain components and accelerating wear and aging. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the entire utility model;

[0016] Figure 2 This is a schematic diagram showing the overall disassembly of this utility model;

[0017] Figure 3 This is a side perspective view of the entire utility model.

[0018] In the diagram: 1. Synchronizer gear sleeve; 101. Spline; 102. Half spline; 2. Synchronizer gear hub; 201. First half key; 202. Offset slot; 3. Synchronizer ring; 301. Second half key; 302. Protrusion; 303. Sliding sleeve; 4. Compression spring; 401. Fixing plate; 402. Slider. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] For examples, please refer to Figure 1-3 This utility model provides a technical solution:

[0024] A single-sided synchronizer assembly with a snap ring-less structure includes a synchronizer sleeve 1. The synchronizer sleeve 1 has a spline 101 inside and a semi-spline 102 inside. A synchronizer hub 2 is located on one side of the semi-spline 102, with a first semi-key 201 and a staggered groove 202. A synchronizer ring 3 is located on the other side of the semi-spline 102, with a second semi-key 301 and a protrusion 302. A sliding sleeve 303 is located on one side of the synchronizer ring 3. A compression spring 4 is located inside the semi-spline 102. A fixing plate 401 is symmetrically located at the top and bottom of the compression spring 4. A slider 402 is located inside the fixing plate 401. During gear shifting... During the process, the spline 101 inside the synchronizer sleeve 1 engages with the spline groove of the input shaft, while the half spline 102 is adapted to the half key on the synchronizer hub 2 and the synchronizer ring 3. When shifting gears is required, the shifting force acts on the synchronizer sleeve 1 and the sliding sleeve 303, causing the inner conical surface of the synchronizer ring 3 to rub and slide against the outer conical surface of the inner ring of the shift gear of the synchronizer hub 2. The frictional force generated by the speed difference causes the synchronizer ring 3 to rotate through an angle and is positioned by the engagement of the protrusion 302 on the synchronizer hub 2 and the staggered groove 202. When the frictional torque of the conical surface overcomes the inertial torque of the engaged part, the speed difference and frictional torque disappear, the synchronizer ring 3 returns to the center, and all components return to their initial positions, waiting for the next shifting operation.

[0025] The protrusion 302 and the sliding sleeve 303 are provided with recessed grooves for matching the slider 402. The slider can move flexibly in the recessed grooves, further enhancing the stability and flexibility of the synchronizer assembly during gear shifting. The half spline 102, the staggered groove 202, the first half key 201, and the protrusion 302 are each provided in three sets. The design of multiple sets of structures allows the synchronizer to distribute the shifting force more evenly during gear shifting, reducing the stress on individual components and improving the stability and durability of the overall structure. The second half key 301 has two sides for matching the spline 101. The full key and half spline 102 are adapted to the first half key 201 and the second half key 301, and the staggered groove 202 is adapted to the protrusion 302, which helps to reduce the impact and noise during shifting and improve the smoothness and comfort of shifting. The two sliding sleeves 303 are set inside the top and bottom of the synchronizer sleeve 1, and the sliding sleeves 303 and synchronizer sleeve 1 are slidably connected, which improves shifting efficiency and also helps to extend the service life of the synchronizer. The fixing plate 401 is fixedly connected to the half spline 102 to prevent the compression spring from shifting or falling off during shifting.

[0026] The working process of this utility model is as follows: When using this type of single-sided synchronizer assembly with no retaining ring, firstly, during gear shifting, the spline 101 inside the synchronizer sleeve 1 engages with the spline groove of the input shaft, while the half-spline 102 adapts to the half-keys on the synchronizer hub 2 and the synchronizer ring 3. When gear shifting is required, the shifting force acts on the synchronizer sleeve 1 and the sliding sleeve 303, causing the inner conical surface of the synchronizer ring 3 to rub and slide against the outer conical surface of the inner ring of the shift gear of the synchronizer hub 2. The frictional force generated by the speed difference causes the synchronizer ring 3 to rotate. After turning at an angle and being positioned by the engagement of the protrusion 302 on the synchronizer hub 2 with the staggered slot 202, the speed difference and friction torque disappear when the conical friction torque overcomes the inertial torque of the engaged part. The synchronizer ring 3 returns to center, and all components return to their initial positions, waiting for the next gear shift. Throughout the process, the design of multiple sets of half splines, staggered slots, the first half key and the protrusions enables the shifting force to be evenly distributed, reducing the stress on individual components and thus improving the stability and durability of the synchronizer assembly.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-sided synchronizer assembly with a circlip-less structure, comprising a synchronizer sleeve (1), characterized in that: The synchronizer sleeve (1) has a spline (101) inside and a half spline (102) inside. One side of the half spline (102) has a synchronizer hub (2), a first half key (201) on the synchronizer hub (2), a staggered groove (202) on the synchronizer hub (2), a synchronizer ring (3) on the other side of the half spline (102), a second half key (301) on the synchronizer ring (3), a protrusion (302) on the synchronizer ring (3), a sliding sleeve (303) on one side of the synchronizer ring (3), a compression spring (4) inside the half spline (102), a fixing plate (401) symmetrically provided at the top and bottom of the compression spring (4), and a slider (402) inside the fixing plate (401).

2. The single-sided synchronizer assembly with a ringless structure according to claim 1, characterized in that: The protrusion (302) and the sliding sleeve (303) are provided with recessed grooves for matching the slider (402).

3. The single-sided synchronizer assembly with a ringless structure according to claim 1, characterized in that: The half-spline (102), staggered slot (202), first half-key (201), and bump (302) are respectively set in three groups.

4. The single-sided synchronizer assembly with a ringless structure according to claim 1, characterized in that: The second half-key (301) has full keys on both sides for matching with the spline (101), the half spline (102) is matched with the first half-key (201) and the second half-key (301), and the staggered groove (202) is matched with the bump (302).

5. The single-sided synchronizer assembly with a ringless structure according to claim 1, characterized in that: The two sliding sleeves (303) are disposed inside the top and bottom ends of the synchronizer sleeve (1), and the sliding sleeves (303) and the synchronizer sleeve (1) are slidably connected.

6. The single-sided synchronizer assembly with a ringless structure according to claim 1, characterized in that: The fixed plate (401) and the half spline (102) are fixedly connected.

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