A durable automotive synchronizer

Abstract

The application discloses a good-durability automobile synchronizer and particularly relates to the technical field of automobile synchronizers, which comprises an outer upper gear, the bottom of the outer upper gear is provided with upper joint teeth, the bottom of the upper joint teeth is provided with an upper synchronizing cone, the upper synchronizing cone and the upper joint teeth are in an integral structure, an upper synchronizer gear ring is arranged on the upper synchronizing cone in a sleeving mode, the bottom of the upper synchronizer gear ring is provided with a synchronizer gear shell, the top and the bottom of the synchronizer gear shell are both provided with synchronizer springs, and the bottom of the synchronizer gear shell is provided with a lower synchronizer gear ring. The synchronizer gear sleeve assembly is arranged, so that the synchronizer gear sleeve of the device is combined instead of being integrally formed. If the synchronizer gear ring and the sliding block are stuck, the synchronizer gear sleeve assembly can be directly segmented and disassembled, the overall disassembly difficulty is low, the maintenance difficulty coefficient is reduced, and therefore the actual use effect of the device is better.

Description

Technical Field

[0001] This invention relates to the field of automotive synchronizer technology, and more specifically, to a durable automotive synchronizer. Background Technology

[0002] A synchronizer is a key component in a transmission. Its main function is to coordinate the speeds of the input and output shafts through friction and locking mechanisms during gear shifting to achieve smooth gear shifting.

[0003] While existing automotive synchronizers can be used normally, they still have many shortcomings in actual use. For example, the synchronizer sleeves of existing automotive synchronizers are mostly made of one piece. If the synchronizer ring and slider get stuck during use, the whole unit is difficult to disassemble, which increases the difficulty of maintenance. This makes the actual performance of existing automotive synchronizers not good enough. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a durable automotive synchronizer. By incorporating a synchronizer gear sleeve assembly, the synchronizer gear sleeve of this device is modular rather than integrally molded. If the synchronizer gear ring and slider become stuck, the synchronizer gear sleeve assembly can be directly disassembled in sections, reducing the overall disassembly difficulty and maintenance complexity. Therefore, the actual performance of this device is better, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a durable automotive synchronizer, comprising an upper outer gear, an upper engagement tooth at the bottom of the upper outer gear, an upper synchronizing cone at the bottom of the upper engagement tooth, the upper synchronizing cone and the upper engagement tooth being an integral structure, an upper synchronizer gear ring sleeved on the upper synchronizing cone, a synchronizer gear housing at the bottom of the upper synchronizer gear ring, synchronizer springs at the top and bottom of the synchronizer gear housing, a lower synchronizer gear ring at the bottom of the synchronizer gear housing, a lower synchronizing cone inside the lower synchronizer gear ring, a lower engagement tooth at the bottom of the lower synchronizing cone, the lower engagement tooth and the lower synchronizing cone being an integral structure, an lower outer gear at the bottom of the lower engagement tooth, and a synchronizer gear sleeve assembly on the outside of the synchronizer gear housing;

[0006] The synchronizer sleeve assembly includes a first sleeve, a second sleeve at one end of the first sleeve, and a third sleeve between the second and first sleeves. Both ends of the first and second sleeves near the second and third sleeves have fan-shaped slots. A limit block is welded to one side of the inner wall of each fan-shaped slot. Insert rods are provided on both ends of the second and third sleeves near the second sleeve, with limit holes at their ends. Two insert plates are welded to the end of the first sleeve near the third sleeve, each insert plate having a through-hole. Fixing grooves are provided on both ends of the third sleeve near the first sleeve, and fixing screw holes are provided on both ends of the third sleeve near the first sleeve, with fixing screws installed inside the fixing screw holes.

[0007] In a preferred embodiment, the first, second, and third toothed sleeves are all arc-shaped, and the insert rod is disposed inside the corresponding fan-shaped slot.

[0008] In a preferred embodiment, the height of the sector slot entrance matches the thickness of the insert.

[0009] In a preferred embodiment, the limiting hole is matched in size with the limiting block at the corresponding position.

[0010] In a preferred embodiment, the fixing slots are matched to the size of the inserts, and the two inserts are positioned corresponding to the two fixing slots.

[0011] In a preferred embodiment, the fixing screw hole is connected to the fixing groove.

[0012] In a preferred embodiment, the fixing screw passes through the insertion hole on the corresponding position of the insert, and the fixing screw is threadedly connected to the fixing screw hole.

[0013] In a preferred embodiment, the outer walls of the upper gear, upper engagement tooth, upper synchronizing cone, upper synchronizer gear ring, synchronizer gear housing, lower synchronizer gear ring, lower synchronizing cone, lower engagement tooth, lower gear, first gear sleeve, second gear sleeve, and third gear sleeve are all provided with a protective coating, which is made of chromium plating material.

[0014] The technical effects and advantages of this invention are as follows:

[0015] 1. By incorporating a synchronizer sleeve assembly, the synchronizer sleeve of this device is modular rather than integrally molded. If the synchronizer ring and slider become stuck, the synchronizer sleeve assembly can be disassembled in sections, reducing the overall disassembly difficulty and maintenance complexity. As a result, the device performs well in practice. Compared with existing technologies, this invention effectively solves the problem that when synchronizer rings and sliders become stuck in automotive synchronizers, the synchronizer sleeves are mostly integrally molded, making disassembly difficult and increasing the maintenance complexity.

[0016] 2. By providing a protective coating, the surfaces of the upper outer gear, upper engaging gear, upper synchronizing cone, upper synchronizer gear ring, synchronizer gear housing, lower synchronizer gear ring, lower synchronizing cone, lower engaging gear, lower outer gear, first gear sleeve, second gear sleeve, and third gear sleeve are protected. This results in higher surface strength for the upper outer gear, upper engaging gear, upper synchronizing cone, upper synchronizer gear ring, synchronizer gear housing, lower synchronizer gear ring, lower synchronizing cone, lower engaging gear, lower outer gear, first gear sleeve, second gear sleeve, and third gear sleeve, making them less susceptible to damage. This improves the durability of the device and enhances its practical performance. Compared with existing technologies, this invention effectively solves the problem of poor durability in automotive synchronizers. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall side cross-sectional structure of the present invention.

[0019] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure of section A in the middle.

[0020] Figure 4 This is a schematic diagram of the overall side structure of the present invention.

[0021] Figure 5 This is a side view of the synchronizer gear sleeve assembly of the present invention.

[0022] Figure 6 This is a side view cross-sectional structural diagram of the synchronizer gear sleeve assembly of the present invention.

[0023] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of section B in the middle.

[0024] Figure 8 For the present invention Figure 6 Enlarged schematic diagram of the C-section structure.

[0025] The attached figures are labeled as follows: 1. Upper outer gear; 2. Upper engagement gear; 3. Upper synchronizing cone; 4. Upper synchronizer gear ring; 5. Synchronizer gear housing; 6. Synchronizer spring; 7. Lower synchronizer gear ring; 8. Lower synchronizing cone; 9. Lower engagement gear; 10. Lower outer gear; 11. Synchronizer gear sleeve assembly; 1101. First gear sleeve; 1102. Second gear sleeve; 1103. Third gear sleeve; 1104. Sector-shaped slot; 1105. Limiting block; 1106. Insert rod; 1107. Limiting hole; 1108. Insert piece; 1109. Insertion hole; 1110. Fixing groove; 1111. Fixing screw hole. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 and attached Figure 8 As shown, the present invention provides a durable automotive synchronizer, including an upper outer gear 1, an upper engagement tooth 2 at the bottom of the upper outer gear 1, an upper synchronizer cone 3 at the bottom of the upper engagement tooth 2, the upper synchronizer cone 3 and the upper engagement tooth 2 being an integral structure, an upper synchronizer gear ring 4 sleeved on the upper synchronizer cone 3, a synchronizer gear housing 5 at the bottom of the upper synchronizer gear ring 4, synchronizer springs 6 at both the top and bottom of the synchronizer gear housing 5, a lower synchronizer gear ring 7 at the bottom of the synchronizer gear housing 5, a lower synchronizer cone 8 inside the lower synchronizer gear ring 7, a lower engagement tooth 9 at the bottom of the lower synchronizer cone 8 being an integral structure, an outer lower gear 10 at the bottom of the lower engagement tooth 9, and a synchronizer gear sleeve assembly 11 on the outside of the synchronizer gear housing 5;

[0028] The synchronizer sleeve assembly 11 includes a first sleeve 1101, a second sleeve 1102 is disposed at one end of the first sleeve 1101, and a third sleeve 1103 is disposed between the second sleeve 1102 and the first sleeve 1101. Fan-shaped slots 1104 are provided on both sides of the first sleeve 1101 near the second sleeve 1102 and the second sleeve 1102 near the third sleeve 1103. A limit block 1105 is welded to one side of the inner wall of each fan-shaped slot 1104. The second sleeve 1102 near the first sleeve 1101 and the third sleeve 1103... Insert rods 1106 are provided on both sides of one end near the second toothed sleeve 1102. The end of the insert rod 1106 is provided with a limiting hole 1107. Two insert pieces 1108 are welded to one end of the first toothed sleeve 1101 near the third toothed sleeve 1103. Insert holes 1109 are provided through the insert pieces 1108. Fixing grooves 1110 are provided on both sides of one end of the third toothed sleeve 1103 near the first toothed sleeve 1101. Fixing screw holes 1111 are provided on both sides of one end of the third toothed sleeve 1103 near the first toothed sleeve 1101. Fixing screws are provided inside the fixing screw holes 1111.

[0029] The first toothed sleeve 1101, the second toothed sleeve 1102 and the third toothed sleeve 1103 are all arc-shaped, and the insertion rod 1106 is disposed inside the corresponding fan-shaped slot 1104;

[0030] The entrance height of the sector slot 1104 is matched with the thickness of the insertion rod 1106;

[0031] The size of the limiting hole 1107 matches that of the corresponding limiting block 1105;

[0032] The fixing groove 1110 is matched in size with the insert 1108, and the two inserts 1108 are positioned corresponding to the two fixing grooves 1110.

[0033] The fixing screw hole 1111 is connected to the fixing groove 1110;

[0034] The fixing screw passes through the insertion hole 1109 on the corresponding position of the insert 1108, and the fixing screw is threadedly connected to the fixing screw hole 1111.

[0035] The specific implementation method is as follows: When using this invention, if it is necessary to disassemble the synchronizer sleeve assembly 11, unscrew the fixing screws on both sides of the end of the third sleeve 1103. At this time, the insert 1108 is no longer fixed in the fixing groove 1110, so the insert 1108 can be pulled out from the fixing groove 1110. Then, pull the third sleeve 1103 upward, so that the insert rod 1106 on the third sleeve 1103 rotates downward. At this time, the insert rod 1106 will separate from the limiting block 1105 in the sector slot 1104, so the insert rod 1106 can be pulled out. Repeat the operation to remove the second sleeve 1102 from the first sleeve 1101. This makes the synchronizer sleeve assembly 11 of this device... It can be removed in three parts without any jamming. If reassembly is required, the above steps can be reversed. By providing the synchronizer sleeve assembly 11, the synchronizer sleeve of this device is modular, not a single piece. If the synchronizer ring and slider get stuck, the synchronizer sleeve assembly 11 can be removed in sections. The overall disassembly difficulty is low, and the maintenance difficulty coefficient is reduced. Therefore, the actual use effect of this device is better. This embodiment solves the problem in the prior art that the synchronizer sleeve of automotive synchronizers is mostly made of one piece, which makes it difficult to disassemble the synchronizer ring and slider when they get stuck, and increases the maintenance difficulty coefficient.

[0036] As attached Figure 1 As shown, the present invention provides a durable automotive synchronizer, which also includes a protective coating. The protective coating is disposed on the outer wall of the upper gear 1, the upper engagement tooth 2, the upper synchronizer cone 3, the upper synchronizer gear ring 4, the synchronizer gear housing 5, the lower synchronizer gear ring 7, the lower synchronizer cone 8, the lower engagement tooth 9, the lower gear 10, the first gear sleeve 1101, the second gear sleeve 1102, and the third gear sleeve 1103. The protective coating is made of chromium plating material.

[0037] The specific implementation method is as follows: When using the present invention, since the chromium plating material has good corrosion resistance and hardness, it can increase the wear resistance of the object. Therefore, the protective coating made of the chromium plating material can protect the surfaces of the upper gear 1, upper engagement tooth 2, upper synchronizing cone 3, upper synchronizer gear ring 4, synchronizer gear housing 5, lower synchronizer gear ring 7, lower synchronizing cone 8, lower engagement tooth 9, lower gear 10, first gear sleeve 1101, second gear sleeve 1102, and third gear sleeve 1103. This results in higher surface strength and less damage to the upper gear 1, upper engagement tooth 2, upper synchronizing cone 3, upper synchronizer gear ring 4, synchronizer gear housing 5, lower synchronizer gear ring 7, lower synchronizing cone 8, lower engagement tooth 9, lower gear 10, first gear sleeve 1101, second gear sleeve 1102, and third gear sleeve 1103, thereby improving the durability of the device and making the actual use effect of the device better. This implementation method solves the problem of poor durability of automotive synchronizers in the prior art.

[0038] Working principle of this invention:

[0039] Refer to the instruction manual appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 and attached Figure 8 When using this invention, the synchronizer gear sleeve assembly 11 is provided, so that the synchronizer gear sleeve of this device is a combination type and not a one-piece molded one. If the synchronizer gear ring and the slider get stuck, the synchronizer gear sleeve assembly 11 can be directly disassembled in sections. The overall disassembly difficulty is low and the maintenance difficulty coefficient is reduced, thus making the actual use effect of this device better.

[0040] Refer to the instruction manual appendix Figure 1 When using this invention, the protective coating protects the surfaces of the upper gear 1, upper engaging tooth 2, upper synchronizing cone 3, upper synchronizer ring 4, synchronizer tooth housing 5, lower synchronizer ring 7, lower synchronizing cone 8, lower engaging tooth 9, lower gear 10, first tooth sleeve 1101, second tooth sleeve 1102, and third tooth sleeve 1103. This results in higher surface strength and less damage to the upper gear 1, upper engaging tooth 2, upper synchronizing cone 3, upper synchronizer ring 4, synchronizer tooth housing 5, lower synchronizer ring 7, lower synchronizing cone 8, lower engaging tooth 9, lower gear 10, first tooth sleeve 1101, second tooth sleeve 1102, and third tooth sleeve 1103, thereby improving the durability of the device and enhancing its actual performance.

[0041] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0042] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0043] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A durable automotive synchronizer, comprising an external upper gear (1), characterized in that: The upper gear (1) is provided with an upper engagement tooth (2) at the bottom. The upper engagement tooth (2) is provided with an upper synchronizing cone (3) at the bottom. The upper synchronizing cone (3) and the upper engagement tooth (2) are an integral structure. An upper synchronizer gear ring (4) is sleeved on the upper synchronizing cone (3). A synchronizer gear housing (5) is provided at the bottom of the upper synchronizer gear ring (4). Synchronizer springs (6) are provided at the top and bottom of the synchronizer gear housing (5). A lower synchronizer gear ring (7) is provided at the bottom of the synchronizer gear housing (5). A lower synchronizing cone (8) is provided inside the lower synchronizer gear ring (7). A lower engagement tooth (9) is provided at the bottom of the lower synchronizing cone (8). The lower engagement tooth (9) and the lower synchronizing cone (8) are an integral structure. An outer lower gear (10) is provided at the bottom of the lower engagement tooth (9). A synchronizer gear sleeve assembly (11) is provided on the outside of the synchronizer gear housing (5). The synchronizer sleeve assembly (11) includes a first sleeve (1101), a second sleeve (1102) is provided at one end of the first sleeve (1101), and a third sleeve (1103) is provided between the second sleeve (1102) and the first sleeve (1101). A fan-shaped slot (1104) is provided on both sides of the first sleeve (1101) near the second sleeve (1102) and the second sleeve (1102) near the third sleeve (1103). A limit block (1105) is welded to one side of the inner wall of the fan-shaped slot (1104). The second sleeve (1102) near the first sleeve (1101) and the third sleeve (1103) are... A rod (1106) is provided on both sides of the end near the second tooth sleeve (1102). The end of the rod (1106) is provided with a limiting hole (1107). Two inserts (1108) are welded to the end of the first tooth sleeve (1101) near the third tooth sleeve (1103). Inserts (1109) are provided through the inserts (1108). Fixing grooves (1110) are provided on both sides of the end of the third tooth sleeve (1103) near the first tooth sleeve (1101). Fixing screw holes (1111) are provided on both sides of the end of the third tooth sleeve (1103) near the first tooth sleeve (1101). Fixing screws are provided inside the fixing screw holes (1111).

2. The durable automotive synchronizer according to claim 1, characterized in that: The first toothed sleeve (1101), the second toothed sleeve (1102) and the third toothed sleeve (1103) are all arc-shaped, and the insertion rod (1106) is disposed inside the corresponding fan-shaped slot (1104).

3. The durable automotive synchronizer according to claim 1, characterized in that: The entrance height of the sector slot (1104) matches the thickness of the insert (1106).

4. A durable automotive synchronizer according to claim 1, characterized in that: The limiting hole (1107) is matched in size with the limiting block (1105) at the corresponding position.

5. A durable automotive synchronizer according to claim 1, characterized in that: The fixing slot (1110) is matched in size with the insert (1108), and the two inserts (1108) are positioned corresponding to the two fixing slots (1110).

6. A durable automotive synchronizer according to claim 1, characterized in that: The fixing screw hole (1111) is connected to the fixing groove (1110).

7. A durable automotive synchronizer according to claim 1, characterized in that: The fixing screw passes through the insertion hole (1109) on the corresponding insert (1108), and the fixing screw is threadedly connected to the fixing screw hole (1111).

8. A durable automotive synchronizer according to claim 1, characterized in that: The outer upper gear (1), upper engagement tooth (2), upper synchronizing cone (3), upper synchronizer gear ring (4), synchronizer gear housing (5), lower synchronizer gear ring (7), lower synchronizing cone (8), lower engagement tooth (9), outer lower gear (10), first gear sleeve (1101), second gear sleeve (1102) and third gear sleeve (1103) are all provided with a protective coating on their outer walls, and the protective coating is made of chromium plating material.

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