A gear set for use in a gearbox

Abstract

The utility model relates to transmission device technical field, especially a gear set for gearbox inside, including input shaft, the planetary gear set is equipped with on input shaft, the planetary gear set is equipped with on input shaft and is fixed disc, input shaft is provided with fixed ring, fixed ring is used for driving input shaft and fixed disc synchronous rotation, when using, the planetary gear set is used for controlling the steering of input shaft and the steering of fixed disc, fixed disc rotates and is installed in the inside of gearbox through bearing, input shaft also rotates and is installed in the inside of gearbox through bearing, the one end of input shaft needs to wear out gearbox, is used for and the output shaft transmission connection of engine, the one end of input shaft is coaxial with fixed disc in the inside of gearbox, when fixed ring is jammed between planetary gear set and fixed disc, input shaft rotates and drives fixed disc to rotate, at this moment is in forward gear, when fixed ring loosens, planetary gear set rotates and works, utilize special structure setting to make at this moment be in reverse gear.

Description

Technical Field

[0001] This utility model relates to the field of transmission device technology, and in particular to a gear set for use inside a gearbox. Background Technology

[0002] A gearbox is a mechanical device used to change the speed at which the engine outputs torque and transmits it to the vehicle's drive wheels. It can change the gear ratio according to changes in vehicle speed and load, thereby enabling the vehicle to have higher efficiency and performance at different speeds. A gearbox typically includes multiple gears and clutches, as well as a lubrication and cooling system to ensure its normal operation and long-term use.

[0003] Dual-meshing transmissions, single automatic sprocket transmissions, and two-speed automatic transmissions exhibit vibration during speed switching and have complex structures. Meanwhile, belt-driven automatic transmissions, although capable of continuously variable transmissions, suffer from drawbacks such as complex structure, high price, and short belt lifespan.

[0004] Chinese patent document CN221374358U discloses an automatic transmission, including a first drive mechanism, a second drive mechanism, and a third drive mechanism. The first drive mechanism includes a first input shaft, a first intermediate shaft, and a first output shaft. An automatic clutch is sleeved at the rear end of the first input shaft, and a first input secondary drive gear is sleeved at one end of the first input shaft near the automatic clutch. A first input drive gear is sleeved at the middle of the first input shaft near the front side of the first input secondary drive gear. In this invention, the transmission can automatically change gears according to changes in road resistance and load, achieving continuously variable transmission (CVT). The automatic transmission has a simple structure, stable and reliable operation, smooth gear shifting, and no defects such as jamming, jerking, or shaking. Using this automatic transmission allows the driver to experience a very relaxed and comfortable driving experience.

[0005] The above technical solution also has the following defects: the reversing gear system has not been improved, resulting in vibration when reversing. Utility Model Content

[0006] The purpose of this invention is to provide a gear set for use inside a gearbox to solve the problems existing in the prior art.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A gear set for use inside a gearbox includes an input shaft, a planetary gear set sleeved on the input shaft, a fixed disk sleeved on the planetary gear set, and a fixed ring disposed on the input shaft for driving the input shaft to rotate synchronously with the fixed disk.

[0008] By adopting the above technical solution, the planetary gear set is used to control the rotation of the input shaft and the fixed plate during use. The fixed plate is rotatably mounted inside the gearbox via bearings, and the input shaft is also rotatably mounted inside the gearbox via bearings. One end of the input shaft needs to pass through the gearbox for transmission connection with the engine's output shaft. The end of the input shaft located inside the gearbox is coaxial with the fixed plate. When the retaining ring is locked between the planetary gear set and the fixed plate, the input shaft rotates, driving the fixed plate to rotate. At this time, it is in forward gear. When the retaining ring is released, the planetary gear set rotates and works, and the special structural setting makes it in reverse gear at this time.

[0009] In a further embodiment, the planetary gear set includes a gear carrier, an internal gear ring, a first ring, and a second ring. The gear carrier is fixedly mounted on a fixed disk, and the gear carrier and the fixed disk are collinear. A coaxial first spur gear is rotatably mounted at the center of the gear carrier. Both the first ring and the second ring are coaxial with the gear carrier and are located inside the gear carrier. The inner diameter of the second ring is larger than the outer diameter of the first ring, and the first ring and the second ring are concentric. Three second spur gears are axially and evenly mounted on the second ring, and three third spur gears are axially and evenly mounted on the first ring. Each third spur gear meshes with a first spur gear. Each second spur gear meshes with one third spur gear, and all second spur gears mesh with the internal gear ring. The internal gear ring is fixedly mounted on the fixed disk, and its internal gear ring is coaxial with the first spur gear. The first spur gear is sleeved on the output shaft.

[0010] By adopting the above technical solution, under normal circumstances, the retaining ring is locked between the gear carrier and the internal gear ring, preventing the gear carrier from rotating relative to the internal gear ring. At this time, the internal gear ring rotates in the same direction as the input shaft. When the retaining ring is released, the rotation direction of the internal gear ring is opposite to the rotation direction of the input shaft. The first and second rings ensure that the relative positions between the three second spur gears and the third spur gear do not change, thus preventing the problem of local gear misalignment caused by sudden overload.

[0011] In a further embodiment, the first ring and the second ring are fixedly connected.

[0012] By adopting the above technical solution, the relative positions of the three second spur gears and the third spur gear remain unchanged.

[0013] In a further embodiment, each of the two ends of the second spur gear is provided with a cylindrical protrusion, and a bearing is sleeved on the cylindrical protrusion. The outer ring of the bearing is fixedly connected to the second ring, and both the first ring and the second ring are rotatably mounted on the input shaft.

[0014] In a further embodiment, the fixing disk is a cylindrical sleeve structure, and one end of the fixing disk is completely closed, with the closed end face of the fixing disk being conical.

[0015] The above technical solution is used to achieve continuously variable transmission (CVT) in conjunction with a mobile disk.

[0016] In a further embodiment, a spline groove and a spline shaft are provided between the first spur gear and the input shaft.

[0017] The above technical solution is used to avoid relative rotation between the first spur gear and the input shaft.

[0018] In summary, this utility model has the following beneficial effects: 1. During use, the planetary gear set is used to control the rotation of the input shaft and the fixed plate. The fixed plate is rotatably mounted inside the gearbox via bearings, and the input shaft is also rotatably mounted inside the gearbox via bearings. One end of the input shaft needs to pass through the gearbox for transmission connection with the engine's output shaft. The end of the input shaft inside the gearbox is coaxial with the fixed plate. When the retaining ring is locked between the planetary gear set and the fixed plate, the input shaft rotates, driving the fixed plate to rotate. At this time, it is in forward gear. When the retaining ring is released, the planetary gear set rotates, and a special structural design allows it to be in reverse gear at this time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram illustrating the structure of the planetary gear set of this utility model.

[0020] In the diagram, 1 is the input shaft; 2 is the planetary gear set; 21 is the gear carrier; 22 is the internal gear ring; 23 is the first ring; 24 is the second ring; 25 is the first spur gear; 26 is the second spur gear; 27 is the third spur gear; 3 is the fixed disc; and 4 is the fixed ring. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0023] Example 1: like Figures 1-2 As shown, a gear set for use inside a gearbox includes an input shaft 1, a planetary gear set 2 mounted on the input shaft 1, a fixed disk 3 mounted on the planetary gear set 2, and a fixed ring 4 on the input shaft 1 for driving the input shaft 1 to rotate synchronously with the fixed disk 3. The planetary gear set 2 includes a gear carrier 21, an internal gear ring 22, a first ring 23, and a second ring 24. The gear carrier 21 is fixedly mounted on the fixed disk 3, and the axes of the gear carrier 21 and the fixed disk 3 are collinear. A coaxial first spur gear 25 is rotatably mounted at the center of the gear carrier 21. The first ring 23 and the second ring 24 are both coaxial with the gear carrier 21 and are located inside the gear carrier 21. The inner diameter of the second ring 24 is larger than the outer diameter of the first ring 23, and the first ring 23 and the second ring 24 are concentric. Three second spur gears 26 are axially and evenly mounted on the second ring 24. Three third spur gears 27 are evenly installed axially on the 3rd shaft. Each third spur gear 27 meshes with a first spur gear 25. Each second spur gear 26 meshes with one third spur gear 27, and each second spur gear 26 meshes with an internal gear ring 22. The internal gear ring 22 is fixedly installed on the fixed disk 3 and is coaxial with the first spur gear 25. The first spur gear 25 is sleeved on the output shaft. A first ring 23 and a second ring 24 are fixedly connected. Each second spur gear 26 has a cylindrical protrusion at the center of both ends, and a bearing is sleeved on the cylindrical protrusion. The outer ring of the bearing is fixedly connected to the second ring 24. The first ring 23 and the second ring 24 are rotatably installed on the input shaft 1. The fixed disk 3 is a cylindrical sleeve structure, and one end of the fixed disk 3 is completely closed. The closed end face of the fixed disk 3 is conical. A spline groove and a spline shaft are provided between the first spur gear 25 and the input shaft 1. Under normal circumstances, the retaining ring is locked between the gear carrier and the internal gear ring, preventing the gear carrier from rotating relative to the internal gear ring. At this time, the internal gear ring rotates in the same direction as the input shaft. When the retaining ring is released, the rotation direction of the internal gear ring is opposite to the rotation direction of the input shaft. The first and second rings ensure that the relative positions between the three second spur gears and the third spur gear do not change, preventing the problem of local gear misalignment due to sudden overload.

[0024] Specific implementation process: It should be noted that the fixed ring in this solution is the clutch, which is the structure used in the existing technology to control the transmission part of the planetary gear set. The main improvement of this solution is the overall improvement of the planetary gear set, so that there will be no relative position change between the second spur gear and the third spur gear inside the planetary gear set, making the transmission system more stable and having higher overload resistance.

[0025] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0026] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A gear set for use inside a gearbox, characterized in that: It includes an input shaft (1), on which a planetary gear set (2) is fitted, on which a fixed disk (3) is fitted, and on which a fixed ring (4) is provided, the fixed ring (4) being used to drive the input shaft (1) and the fixed disk (3) to rotate synchronously; The planetary gear set (2) includes a gear carrier (21), an internal gear ring (22), a first ring (23), and a second ring (24). The gear carrier (21) is fixedly mounted on a fixed disk (3), and the gear carrier (21) and the fixed disk (3) are collinear. A coaxial first spur gear (25) is rotatably mounted at the center of the gear carrier (21). The first ring (23) and the second ring (24) are both coaxial with the gear carrier (21), and both the first ring (23) and the second ring (24) are located inside the gear carrier (21). The inner diameter of the second ring (24) is larger than the outer diameter of the first ring (23), and the first ring... The ring (23) and the second ring (24) are concentric. Three second spur gears (26) are axially evenly installed on the second ring (24), and three third spur gears (27) are axially evenly installed on the first ring (23). Each third spur gear (27) meshes with the first spur gear (25). Each second spur gear (26) meshes with one third spur gear (27), and each second spur gear (26) meshes with the internal gear ring (22). The internal gear ring (22) is fixedly installed on the fixed disk (3). Its internal gear ring (22) is coaxial with the first spur gear (25). The first spur gear (25) is sleeved on the output shaft.

2. A gear set for use inside a gearbox according to claim 1, characterized in that: The first ring (23) and the second ring (24) are fixedly connected.

3. A gear set for use inside a gearbox according to claim 1, characterized in that: Each of the two ends of the second spur gear (26) is provided with a cylindrical protrusion at the center position. A bearing is sleeved on the cylindrical protrusion. The outer ring of the bearing is fixedly connected to the second ring (24). The first ring (23) and the second ring (24) are rotatably mounted on the input shaft (1).

4. A gear set for use inside a gearbox according to claim 1, characterized in that: The fixed disk (3) is a cylindrical sleeve structure, and one end of the fixed disk (3) is completely closed. The closed end face of the fixed disk (3) is conical.

5. A gear set for use inside a gearbox according to claim 1, characterized in that: A spline groove and a spline shaft are provided between the first spur gear (25) and the input shaft (1).

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