Novel spiral bevel gear differential mechanism for electric tricycle

Abstract

The novel spiral bevel gear differential mechanism for the electric tricycle comprises a differential mechanism left shell and a differential mechanism right shell, a positioning pin is arranged at the joint of the differential mechanism left shell and the differential mechanism right shell, and a small spiral bevel gear rotating shaft is arranged in the middle of the differential mechanism left shell and the middle of the differential mechanism right shell. And small spiral bevel gears are fixedly mounted on the outer rings of the two ends of the small spiral bevel gear rotating shaft. The novel spiral bevel gear differential mechanism for the electric tricycle has the advantages of being high in transmission precision, small in noise and vibration, large in bearing torque, small in size, light in weight and the like, stable transmission during gear meshing can be guaranteed through the high-precision spiral bevel gears, noise and vibration generated during gear transmission are reduced, and the service life of the electric tricycle is prolonged. The meshing degree of the high-precision spiral bevel gear pair is greatly improved compared with that of a common straight tooth bevel gear, and then the bearing capacity of the differential mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of differential of electric tricycles, in particular to a new spiral bevel gear differential for electric tricycles. Background Art

[0002] The differential of an electric tricycle is a mechanism that enables the left and right (or front and rear) drive wheels to rotate at different speeds. It mainly consists of left and right half-axle gears, two planetary gears and a gear carrier. Its function is to make the left and right wheels roll at different speeds when the vehicle turns or travels on an uneven road surface, that is, to ensure that the two drive wheels make pure rolling motion.

[0003] At present, the widely used differential of electric tricycles is the ordinary straight bevel gear drive, which has defects such as large gear backlash, unstable meshing, large noise and vibration, and weak strength and stiffness of the differential housing, bringing certain adverse effects to the using process. Therefore, we propose a new spiral bevel gear differential for electric tricycles. Summary of the Utility Model

[0004] The utility model aims at the problems existing in the above-mentioned prior art and provides a new spiral bevel gear differential for electric tricycles.

[0005] The utility model solves the above technical problems by the following technical means:

[0006] A new spiral bevel gear differential for electric tricycles includes a left differential housing and a right differential housing. A positioning pin is provided between the connection parts of the left differential housing and the right differential housing. A small spiral bevel gear rotating shaft is provided in the middle of the left differential housing and the right differential housing. Small spiral bevel gears are fixedly installed on the outer circles at both ends of the small spiral bevel gear rotating shaft. Small spiral bevel gear rectangular groove gaskets are sleeved at both ends of the small spiral bevel gear rotating shaft. Large spiral bevel gears are provided on both sides of the small spiral bevel gear rotating shaft. A flat thrust bearing gasket is provided on the other side of the large spiral bevel gear. A differential housing bearing is fixedly installed between the other side of the flat thrust bearing gasket and the inside of the left differential housing. A differential housing skeleton oil seal is provided in the middle of the inner surfaces on the other sides of the left differential housing and the right differential housing.

[0007] Further, the small spiral bevel gear rotating shaft is stuck in the groove between the inside of the left differential housing and the right differential housing.

[0008] Further, the small spiral bevel gears are symmetrically installed at both ends of the small spiral bevel gear rotating shaft, and are fixedly connected between the small spiral bevel gears and both ends of the small spiral bevel gear rotating shaft. The small spiral bevel gear rectangular groove gaskets are sleeved at both ends of the small spiral bevel gear rotating shaft.

[0009] Further, the number of the large spiral bevel gears is two groups, and the large spiral bevel gears are symmetrically installed on both sides of the small spiral bevel gear rotating shaft, and the large spiral bevel gears are meshed with the small spiral bevel gears.

[0010] Further, the other end of the large spiral bevel gear is connected between the flat thrust bearing gasket and the differential case bearing, and the large spiral bevel gear is movably connected to the inside of the differential left case and the differential right case through the differential case bearing.

[0011] Further, the differential left case and the differential right case are fixedly connected by a positioning pin, and the differential case skeleton oil seal is fixedly connected between the middle parts of the outer surfaces of the other sides of the differential left case and the differential right case respectively.

[0012] Beneficial effects

[0013] Compared with the prior art, the present utility model provides a novel spiral bevel gear differential for an electric tricycle, having the following beneficial effects:

[0014] The novel spiral bevel gear differential for an electric tricycle is integrally designed by high-precision spiral bevel gears, high-strength aluminum alloy cases and bearing oil seals, etc., and has the advantages of high transmission precision, low noise and vibration, large load-bearing torque, small volume and weight, etc. The high-precision spiral bevel gears can ensure the smooth transmission during gear meshing, reduce the noise and vibration generated during gear transmission, and the meshing degree of the high-precision spiral bevel gear pair is greatly improved compared with that of the ordinary straight-tooth bevel gears, thereby improving the load-bearing capacity of the differential. Description of the drawings

[0015] Figure 1 It is a schematic diagram of the overall disassembled structure of a novel spiral bevel gear differential for an electric tricycle according to the present utility model.

[0016] In the figure: 1. Differential left case; 2. Differential right case; 3. Small spiral bevel gear rotating shaft; 4. Small spiral bevel gear; 5. Small spiral bevel gear rectangular groove gasket; 6. Large spiral bevel gear; 7. Flat thrust bearing gasket; 8. Differential case bearing; 9. Differential case skeleton oil seal; 10. Positioning pin. Specific embodiments

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present utility model belong to the scope of protection of the present utility model.

[0018] As shown Figure 1 in the figure, a new type of spiral bevel gear differential for an electric tricycle includes a differential left housing 1 and a differential right housing 2. A positioning pin 10 is provided between the connection parts of the differential left housing 1 and the differential right housing 2. A small spiral bevel gear rotating shaft 3 is provided in the middle of the differential left housing 1 and the differential right housing 2. Small spiral bevel gears 4 are fixedly installed on the outer circles at both ends of the small spiral bevel gear rotating shaft 3. Small spiral bevel gear rectangular groove gaskets 5 are sleeved on both ends of the small spiral bevel gear rotating shaft 3. Large spiral bevel gears 6 are provided on both sides of the small spiral bevel gear rotating shaft 3. A flat thrust bearing gasket 7 is provided on the other side of the large spiral bevel gear 6. A differential housing bearing 8 is fixedly installed between the other side of the flat thrust bearing gasket 7 and the inside of the differential left housing 1. A differential housing skeleton oil seal 9 is provided in the middle of the inner surfaces on the other sides of the differential left housing 1 and the differential right housing 2.

[0019] The small spiral bevel gear rotating shaft 3 is stuck in the groove between the inside of the differential left housing 1 and the differential right housing 2.

[0020] The small spiral bevel gears 4 are symmetrically installed at both ends of the small spiral bevel gear rotating shaft 3, and are fixedly connected between the small spiral bevel gears 4 and both ends of the small spiral bevel gear rotating shaft 3. The small spiral bevel gear rectangular groove gaskets 5 are sleeved on both ends of the small spiral bevel gear rotating shaft 3.

[0021] The number of the large spiral bevel gears 6 is two groups, and the large spiral bevel gears 6 are symmetrically installed on both sides of the small spiral bevel gear rotating shaft 3, and are meshed and connected between the large spiral bevel gears 6 and the small spiral bevel gears 4.

[0022] The other end of the large spiral bevel gear 6 is connected between the flat thrust bearing gasket 7 and the differential housing bearing 8, and the large spiral bevel gear 6 is movably connected between the inside of the differential left housing 1 and the differential right housing 2 through the differential housing bearing 8.

[0023] The differential left housing 1 and the differential right housing 2 are fixedly connected through the positioning pin 10, and the differential housing skeleton oil seal 9 is fixedly connected between the middle of the outer surfaces on the other sides of the differential left housing 1 and the differential right housing 2 respectively.

[0024] Working principle

[0025] It is composed of parts such as the left differential housing 1 cast from aluminum alloy, the right differential housing 2, the small spiral bevel gear rotating shaft 3, the small spiral bevel gear 4, the small spiral bevel gear rectangular groove gasket 5, the large spiral bevel gear 6, the flat thrust bearing gasket 7, and the differential housing bearing 8. Grooves for placing the small spiral bevel gear rotating shaft 3 are provided in the left differential housing 1 and the right differential housing 2. Two small spiral bevel gears 4 are installed on the outer surfaces at both ends of the small spiral bevel gear rotating shaft 3. Card slots for installing the small spiral bevel gear rectangular groove gasket 5 are machined at both ends of the small spiral bevel gear rotating shaft 3. The small spiral bevel gear 4 transmits power to the large spiral bevel gear 6 through gear meshing. There are spline holes for installing the left and right half shafts on the large spiral bevel gear 6. The left and right half shafts are connected to the differential through splines, and then the power is transmitted to the left and right half shafts to drive the wheels to rotate. The left differential housing 1 and the right differential housing 2 ensure concentricity by the positioning method of one plane and two pins through two positioning pins 10. The small spiral bevel gear 4 is separated from the left differential housing 1 and the right differential housing 2 of the differential by the small spiral bevel gear rectangular groove gasket 5, avoiding wear on the left and right differential housings caused by the rotation of the small spiral bevel gear 4. Because when the small spiral bevel gear 4 rotates, the small spiral bevel gear rectangular groove gasket 5 is stuck on the small spiral bevel gear rotating shaft 3, and the small spiral bevel gear rotating shaft 3 is stuck in the card slots formed by the left differential housing 1 and the right differential housing 2, there is no relative rotation between the small spiral bevel gear rectangular groove gasket 5 and the left and right differential housings, thus avoiding friction between the small spiral bevel gear rectangular groove gasket 5 and the left and right housings.

[0026] It should be noted that in this article, relational terms such as first and second (No. 1, No. 2) are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0027] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A novel spiral bevel gear differential for an electric tricycle, comprising a differential left housing (1) and a differential right housing (2), characterized in that: A positioning pin (10) is provided between the connection parts of the left differential housing (1) and the right differential housing (2). A small spiral bevel gear rotating shaft (3) is provided in the middle of the left differential housing (1) and the right differential housing (2). Small spiral bevel gears (4) are fixedly installed on the outer rings at both ends of the small spiral bevel gear rotating shaft (3). Small spiral bevel gear rectangular groove gaskets (5) are sleeved on both ends of the small spiral bevel gear rotating shaft (3). Large spiral bevel gears (6) are provided on both sides of the small spiral bevel gear rotating shaft (3). A flat thrust bearing gasket (7) is provided on the other side of the large spiral bevel gear (6). A differential housing bearing (8) is fixedly installed between the other side of the flat thrust bearing gasket (7) and the inside of the left differential housing (1). A differential housing skeleton oil seal (9) is provided in the middle of the inner surfaces of the other sides of the left differential housing (1) and the right differential housing (2).

2. The novel spiral bevel gear differential for an electric tricycle according to claim 1, wherein: The small spiral bevel gear rotating shaft (3) is stuck in the groove between the inside of the left differential housing (1) and the right differential housing (2).

3. The novel spiral bevel gear differential for an electric tricycle according to claim 1, characterized in that: The small spiral bevel gears (4) are symmetrically installed at both ends of the small spiral bevel gear rotating shaft (3), and the small spiral bevel gears (4) are fixedly connected to both ends of the small spiral bevel gear rotating shaft (3). The small spiral bevel gear rectangular groove gaskets (5) are sleeved on both ends of the small spiral bevel gear rotating shaft (3).

4. A novel spiral bevel gear differential for an electric tricycle according to claim 1, characterized in that: The number of the large spiral bevel gears (6) is two groups, and the large spiral bevel gears (6) are symmetrically installed on both sides of the small spiral bevel gear rotating shaft (3), and the large spiral bevel gears (6) are meshed and connected with the small spiral bevel gears (4).

5. A novel spiral bevel gear differential for an electric tricycle according to claim 1, characterized in that: The other end of the large spiral bevel gear (6) is connected between the flat thrust bearing gasket (7) and the differential housing bearing (8), and the large spiral bevel gear (6) is movably connected between the inside of the left differential housing (1) and the right differential housing (2) through the differential housing bearing (8).

6. The novel spiral bevel gear differential for an electric tricycle according to claim 1, wherein: The left differential housing (1) and the right differential housing (2) are fixedly connected through the positioning pin (10), and the differential housing skeleton oil seal (9) is fixedly connected between the middle of the outer surfaces of the other sides of the left differential housing (1) and the right differential housing (2) respectively.

Images