Reverse gear structure with reverse gear limiting function, gearbox and automobile

Abstract

The utility model discloses a reverse gear structure with a reverse gear limiting function, a gearbox and an automobile, and belongs to the technical field of gearbox design and manufacture, the reverse gear structure comprises a reverse gear limiting sleeve, a reverse gear shifting fork shaft is sleeved with the reverse gear limiting sleeve, one end of the reverse gear shifting fork shaft is arranged on an upper cover shell, and the upper cover shell is located on one side of the reverse gear limiting sleeve. And a reverse gear shifting fork is arranged on the other side of the gear limiting sleeve on the reverse gear shifting fork shaft. When the reverse gear is removed, the reverse gear shifting fork drives the reverse gear shifting fork shaft installed on the upper cover shell to move leftwards, the reverse gear shifting fork makes contact with the reverse gear limiting sleeve arranged on the reverse gear shifting fork shaft in a sleeving mode to achieve limiting of the reverse gear shifting fork, and the problem that the transmission is over-reset when the reverse gear is removed is solved. Therefore, the problems of early abrasion of the matching surface of the reverse gear shifting fork and the reverse gear sliding sleeve and abrasion of the non-working surface of the reverse gear sliding sleeve and the shaft gear are solved, the service life of the gearbox is prolonged, and the reliability of the gearbox is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gearbox design and manufacturing, and in particular relates to a reverse gear structure with a reverse gear limiting function, a gearbox and a car. Background Art

[0002] As a key component of the automotive power system, the technology development and market status of the gearbox have always been the focus of the automotive industry. The 6J series gearbox is widely used in various passenger cars and commercial vehicles, including sedans, SUVs, trucks, etc., due to its high efficiency, stability, reliability and intelligence. It can meet the power requirements of different models, provide a variety of driving mode options, and meet the needs of different consumers. It occupies an important position in the automotive industry and has made important contributions to improving vehicle performance and driving experience.

[0003] However, the 6J series gearbox was not designed with a limit structure in the reverse gear return direction. Figure 2 When the gearbox is removed from the reverse gear, it is easy to over-return, causing early wear of the matching surface of the reverse gear fork and the reverse gear sleeve, and wear of the non-working surface of the reverse gear sleeve and the first-axis gear. This phenomenon may cause the vehicle to fail to start or drive normally, or even cause a safety accident. Therefore, a reverse gear limit structure must be added to protect the above parts. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a reverse gear structure, a gearbox and a car with a reverse gear limiting function, so as to solve the technical problem that the gearbox in the prior art is prone to over-returning during the reverse gear removal process.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A reverse gear structure with a reverse gear limit function comprises a reverse gear limit sleeve, wherein the reverse gear limit sleeve is arranged on a reverse gear fork shaft, one end of the reverse gear fork shaft is arranged on an upper cover shell, and the upper cover shell is located on one side of the limit sleeve, and a reverse gear fork is arranged on the other side of the limit sleeve on the reverse gear fork shaft.

[0007] Preferably, the inner diameter of the reverse gear limiting sleeve is not less than the outer diameter of the reverse gear fork shaft.

[0008] Preferably, the outer diameter of the reverse gear limit sleeve is 27.5-28 mm.

[0009] Preferably, the length of the reverse gear limit sleeve is 22.2-22.5 mm.

[0010] Preferably, it also includes a second shaft, which is arranged on one side of the reverse gear fork shaft, and is equipped with a second shaft first gear gear, a reverse gear sleeve and a second shaft reverse gear, and the reverse gear sleeve is located between the second shaft first gear gear and the second shaft reverse gear, and the second shaft first gear gear and the reverse gear sleeve are in contact with the reverse gear fork.

[0011] Preferably, when the reverse gear is disengaged, the reverse gear fork contacts the reverse gear limiting sleeve on the reverse gear fork shaft.

[0012] Preferably, when the reverse gear is disengaged, the reverse gear sliding sleeve withdraws from the meshing with the reverse gear of the second shaft and does not contact the first gear of the second shaft.

[0013] A gearbox comprises the reverse gear structure with a reverse gear limiting function as described in any one of the above.

[0014] A car comprises the gearbox with the above characteristics.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The present application adopts a reverse gear limit sleeve to limit the return direction of the reverse gear fork, solving the problem of over-return when the reverse gear is disengaged;

[0017] 2. It solves the problems of early wear of the matching surface between the reverse gear fork and the reverse gear sleeve and the wear of the non-working surface between the reverse gear sleeve and the first-axis gear, thus extending the service life of the gearbox and improving the reliability of the gearbox.

[0018] 3. The inner and outer diameters and length of the reverse gear limit sleeve are calculated by combining the meshing length between the reverse gear sleeve and the reverse gear of the second shaft, the movement clearance between the reverse gear fork and the reverse gear sleeve, and the distance between the left end face of the reverse gear sleeve and the right end face of the first gear of the second shaft through precise dimension chain calculation, which ensures the accurate return of the reverse gear fork and the accurate limit of the reverse gear limit sleeve on the reverse gear fork. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the device structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the prior art.

[0021] Among them: 1-upper cover shell; 2-reverse gear limit sleeve; 3-reverse gear fork; 4-reverse gear fork shaft; 5-second shaft reverse gear; 6-second shaft; 7-reverse gear sliding sleeve; 8-second shaft first gear gear. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] The utility model is further described in detail below with reference to the accompanying drawings:

[0025] The phenomenon of over-returning after the gearbox is removed from reverse gear means that when the gearbox is operated, after the gear is removed from reverse gear, the gear does not return to the neutral position completely, but stays in the middle position or forward gear position. This phenomenon may cause the vehicle to fail to start or drive normally, and even cause a safety accident.

[0026] As a key component of the automobile power system, the gearbox is constantly improving and improving in terms of technology development and market status. At the same time, common problems such as the over-return phenomenon when the gearbox is removed from the reverse gear also need to be paid attention to and concerned by drivers and maintenance personnel to ensure the safety and stable operation of the automobile. Therefore, the present application discloses a reverse gear structure with a reverse gear limit function, a gearbox and an automobile.

[0027] See also Figure 1The present application discloses a reverse gear structure with a reverse gear limiting function, including a reverse gear limiting sleeve 2, wherein the reverse gear limiting sleeve 2 is sleeved on a reverse gear fork shaft 4, one end of the reverse gear fork shaft 4 is arranged on an upper cover shell 1, and the upper cover shell 1 is located on one side of the reverse gear limiting sleeve 2, and a reverse gear fork 3 is arranged on the other side of the reverse gear limiting sleeve 2 on the reverse gear fork shaft 4. When the reverse gear is removed, the reverse gear fork 3 drives the reverse gear fork shaft 4 installed on the upper cover shell 1 to move leftward, and the reverse gear fork 3 contacts the reverse gear limiting sleeve 2 sleeved on the reverse gear fork shaft 4 to limit the reverse gear fork 3, thereby solving the problem of over-returning when the transmission is disengaged from the reverse gear; further solving the problem of early wear of the matching surface of the reverse gear fork and the reverse gear sliding sleeve and the wear of the non-working surface of the reverse gear sliding sleeve and the first-axis gear, thereby extending the service life of the transmission and improving the reliability of the transmission.

[0028] In some embodiments, the inner diameter of the reverse gear limiting sleeve 2 is not less than the outer diameter of the reverse gear fork shaft 4 , so that it can be sleeved on the reverse gear fork shaft 4 to provide protection for the reverse gear limiting fork 3 .

[0029] In some embodiments, the outer diameter of the reverse gear limiting sleeve 2 is 27.5-28 mm, ensuring that it can limit the reverse gear fork 3 without affecting the realization of the overall function inside the gearbox.

[0030] In some embodiments, the length of the reverse gear limit sleeve 2 is 22.2~22.5mm, ensuring that its limit can make the reverse gear sliding sleeve 7 withdraw from the engagement with the second-shaft reverse gear 5 and not contact the second-shaft first-gear gear 8, so that the reverse gear fork can return to its position accurately and the reverse gear limit sleeve can accurately limit the reverse gear fork.

[0031] The inner and outer diameters and length of the reverse gear limit sleeve are calculated through precise dimension chain calculation by combining the meshing length of the reverse gear sleeve and the reverse gear of the second shaft, the movement clearance between the reverse gear fork and the reverse gear sleeve, and the distance between the left end face of the reverse gear sleeve and the right end face of the first gear of the second shaft, thereby ensuring the accurate return of the reverse gear fork and realizing the accurate limiting of the reverse gear limit sleeve on the reverse gear fork.

[0032] In some embodiments, the reverse gear structure with reverse gear limit function also includes a second shaft 6, which is arranged on one side of the reverse gear fork shaft 4, and is equipped with a second shaft first gear 8, a reverse gear sleeve 7 and a second shaft reverse gear 5, and the reverse gear sleeve 7 is located between the second shaft first gear 8 and the second shaft reverse gear 5, and the second shaft first gear 8 and the reverse gear sleeve 7 are in contact with the reverse gear fork 3.

[0033] When the reverse gear is removed, the reverse gear fork 3 drives the reverse gear fork shaft 4 installed on the upper cover shell 1 to move leftward, and at the same time drives the reverse gear sliding sleeve 7 meshing with the reverse gear sliding sleeve shaft section on the second shaft 6 to move leftward, gradually withdrawing from the meshing with the reverse gear gear 5 of the second shaft; when the reverse gear fork 3 returns to its position, it contacts the reverse gear limiting sleeve 2 sleeved on the reverse gear fork shaft 4 to limit the reverse gear fork 3, thereby preventing the reverse gear sliding sleeve 7 driven by the reverse gear fork 3 from contacting the first gear gear 8 of the second shaft.

[0034] This application is mainly aimed at improving the 6J series gearbox, which is a type of gearbox widely used in the automotive industry. It adopts advanced technology and design concepts to provide more efficient, smooth and reliable power transmission.

[0035] Features of the 6J Series gearbox include:

[0036] High efficiency: By optimizing gear design and transmission ratio, this series of gearboxes can achieve higher transmission efficiency, reduce energy loss, and thus improve the vehicle's fuel economy.

[0037] Smoothness: The 6J series gearbox adopts advanced synchronizer technology and shift control strategy, which makes the shifting process smoother, reduces the sense of frustration and improves driving comfort.

[0038] Reliability: The components of this series of gearboxes have undergone strict quality control and durability testing to ensure that they can operate stably in various harsh working environments and extend their service life.

[0039] Intelligence: Some advanced 6J series gearboxes are also equipped with an intelligent control system that can perform intelligent gear shifting according to actual driving conditions and vehicle status, further improving driving convenience and safety.

[0040] In terms of application, the 6J series gearbox is widely used in various types of passenger cars and commercial vehicles, including sedans, SUVs, trucks, etc. It can meet the power requirements of different models, provide a variety of driving mode options, and meet the needs of different consumers.

[0041] This application improves the 6J series gearbox, solves the problems of early wear of the mating surface between the reverse gear fork and the reverse gear sleeve and wear of the non-working surface between the reverse gear sleeve and the first-axis gear, extends the service life of the gearbox and improves the reliability of the gearbox, and makes an important contribution to improving vehicle performance and driving experience.

[0042] The present application also discloses a gearbox, comprising a reverse gear structure with a reverse gear limiting function as described in any one of the above.

[0043] A car comprises the gearbox with the above characteristics.

[0044] The above content is only for explaining the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.

Claims

1. A reverse gear structure with a reverse gear limit function, characterized in that: The invention comprises a reverse gear limit sleeve (2), wherein the reverse gear limit sleeve (2) is sleeved on a reverse gear fork shaft (4), one end of the reverse gear fork shaft (4) is arranged on an upper cover shell (1), and the upper cover shell (1) is located on one side of the reverse gear limit sleeve (2), and a reverse gear fork (3) is arranged on the reverse gear fork shaft (4) on the other side of the reverse gear limit sleeve (2).

2. The reverse gear structure with reverse gear limit function according to claim 1, characterized in that: The inner diameter of the reverse gear limiting sleeve (2) is not less than the outer diameter of the reverse gear fork shaft (4).

3. The reverse gear structure with reverse gear limit function according to claim 1, characterized in that: The outer diameter of the reverse gear limiting sleeve (2) is 27.5-28 mm.

4. The reverse gear structure with reverse gear limit function according to claim 1, characterized in that: The length of the reverse gear limiting sleeve (2) is 22.2-22.5 mm.

5. The reverse gear structure with reverse gear limit function according to claim 1, characterized in that: The invention also comprises a second shaft (6), the second shaft (6) being arranged on one side of the reverse gear fork shaft (4), the second shaft (6) being equipped with a second shaft first gear (8), a reverse gear sliding sleeve (7) and a second shaft reverse gear (5), and the reverse gear sliding sleeve (7) being located between the second shaft first gear (8) and the second shaft reverse gear (5), and the second shaft first gear (8) and the reverse gear sliding sleeve (7) being in contact with the reverse gear fork (3).

6. The reverse gear structure with reverse gear limit function according to claim 1, characterized in that: When the reverse gear is removed, the reverse gear shift fork (3) contacts the reverse gear limiting sleeve (2) on the reverse gear shift fork shaft (4).

7. The reverse gear structure with reverse gear limit function according to claim 5, characterized in that: When the reverse gear is removed, the reverse gear sliding sleeve (7) withdraws from the meshing with the second shaft reverse gear (5) and does not contact the second shaft first gear (8).

8. A gearbox, characterized in that: It comprises the reverse gear structure with reverse gear limiting function as claimed in any one of claims 1 to 7.

9. A car, characterized in that: Including the gearbox as described in claim 8.

Images