Compact electronic actuator of gear structure

Abstract

The utility model relates to the technical field of automobile actuators, in particular to a compact electronic actuator with a gear structure, which comprises a driving motor and a gear assembly, motor teeth are arranged on an output shaft of the driving motor, and the gear assembly comprises a first-stage stacked tooth, a sector gear shaft, a sector gear, a second-stage stacked tooth and a gear shaft. The first-stage stacked teeth are arranged in the sector gear shaft in a sleeved mode and meshed with the motor teeth, the sector gear is fixedly arranged on the sector gear shaft in an injection molding mode and is coaxial with the first-stage stacked teeth, and the second-stage stacked teeth are arranged in the gear shaft in a sleeved mode and meshed with the first-stage stacked teeth and the sector gear. The projection of the gear shaft and the projection of the output shaft of the driving motor on the horizontal plane are concentric. Through coaxial distribution, the original center distance of three stages of gears can be reduced to the center distance of one stage of gears, the number of gear shafts is reduced, the cost is reduced, and meanwhile the risk that gear meshing fails due to the fact that the center distance of the gears is not accurate is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile executor relates to a compact electronic executor of gear structure. BACKGROUND

[0002] In modern industry and automobile field, electronic executor as a kind of device for converting electric energy into mechanical energy is widely applied in various control systems, these executor usually needs compact structure design to adapt to limited space, and requires high efficiency and high reliability to meet strict performance requirements, gear structure as the key part in electronic executor, its design directly influences the performance and life of executor.

[0003] Due to the environment requirement of energy conservation and emission reduction, the demand of small displacement automobile is more and more big, due to the space limitation of small turbocharger used by small displacement automobile, the size of turbocharging electronic executor commonly used in market is relatively big, which is easy to cause insufficient engine compartment space. UTILITY MODEL CONTENT

[0004] The utility model discloses to solve the problem of prior art, provide a kind of compact electronic executor of gear structure, which can effectively solve the insufficient engine compartment space, reduce the volume of electronic executor, and transmission torque can still be enough, stable output.

[0005] The utility model discloses a compact electronic executor of gear structure, including: drive motor and gear assembly, motor tooth is provided on the output shaft of drive motor, gear assembly includes and first stack of teeth, fan tooth shaft, fan tooth, second stack of teeth and gear shaft, first stack of teeth is set in fan tooth shaft and is engaged with motor tooth, fan tooth is fixed by injection molding and is arranged on fan tooth shaft and is coaxial with first stack of teeth, second stack of teeth is set in gear shaft and is engaged with first stack of teeth and fan tooth, the projection of gear shaft and the output shaft of drive motor is concentric in horizontal plane.

[0006] Further improvement, fan tooth shaft is provided with knurling part, and fan tooth is arranged on the knurling part of fan tooth shaft by injection molding.

[0007] Further improvement, first stack of teeth includes fixedly arranged first lower gear and first upper gear, first lower gear is engaged with motor tooth, and first upper gear is engaged with second stack of teeth.

[0008] Further improvement, second stack of teeth includes fixedly arranged second lower gear and second upper gear, second lower gear is engaged with first upper gear, and second upper gear is engaged with fan tooth.

[0009] Further improvement, the fan tooth includes a fan tooth body and an outer tooth arranged outside the fan tooth body, a mounting hole is arranged in the middle of the fan tooth body, and a boss is arranged at the upper end of the mounting hole.

[0010] Compared with the prior art, the utility model has the advantages of:

[0011] 1、 The utility model discloses a one -level tooth and fan tooth coaxial, two -level tooth and motor tooth coaxial, ensure that big transmission ratio torque, greatly reduce the gear layout space simultaneously,

[0012] 2、 The utility model discloses a coaxial distribution can reduce the original three -level gear center distance to one -level gear center distance, reduced the risk of gear meshing problem because of gear center distance inaccuracy. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the structural schematic diagram of the utility model;

[0014] Fig. 2 It is the utility model's explosion map;

[0015] Fig. 3 It is the sectional view of gear assembly of the utility model;

[0016] Fig. 4 It is the structural schematic diagram of fan tooth of the utility model.

[0017] In the drawing, 1, drive motor;11, motor tooth;2, gear assembly;21, one -level tooth;211, first lower gear;212, first upper gear;22, fan tooth shaft;221, knurling part;23, fan tooth;231, fan tooth body;2311, boss;232, outer tooth;24, two -level tooth;241, second lower gear;242, second upper gear;25, gear shaft. DETAILED DESCRIPTION

[0018] In the description of the utility model, it is explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawing, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0019] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or it can be detachable connection, or it can be integrally connected.

[0020] The following will be described in conjunction with the embodiments and the accompanying Figs. 1-4 The technical scheme of the utility model will be further described.

[0021] Embodiment 1

[0022] A compact electronic actuator of gear structure, comprising: drive motor 1 and gear assembly 2, motor tooth 11 is arranged on the output shaft of the drive motor 1, the gear assembly 2 includes and primary stack gear 21, fan gear shaft 22, fan gear 23, secondary stack gear 24 and gear shaft 25, the primary stack gear 21 is set in the fan gear shaft 22 and is engaged with the motor tooth 11, the fan gear 23 is fixedly arranged on the fan gear shaft 22 by injection molding and is coaxial with the primary stack gear 21, the secondary stack gear 24 is set in the gear shaft 25 and is engaged with the primary stack gear 21 and fan gear 23, and the gear shaft 25 is concentric with the projection of the output shaft of the drive motor 1 on the horizontal plane.

[0023] As Figs. 1-4 The utility model discloses a coaxial layout, primary stack gear 21, fan gear shaft 22, fan gear 23 are coaxial, motor tooth 11, secondary stack gear 24 and gear shaft 25 are coaxial, reduce the original three-stage gear center distance to primary gear center distance, reduce the risk that gear engagement is out of problem due to inaccurate gear center distance, double coaxial distribution gear, guarantee big transmission ratio torque, and reduce the number of gear layout space, and reduce the number of gear shaft.

[0024] Preferably, the material of primary stack gear 21, secondary stack gear 24 and fan gear 23 is PA46-GF30-PTFE, which meets the toughness and hardness requirements of vehicle level, and the material of fan gear shaft 22 and gear shaft 25 is SUS304, which meets the corrosion resistance and strength requirements of vehicle level.

[0025] As a further preferred embodiment, the fan gear shaft 22 is provided with a knurled portion 221, and the fan gear 23 is arranged on the knurled portion 221 of the fan gear shaft 22 by injection molding. The knurled portion 221 improves the stability of the device and prevents the fan gear 23 from being separated from the fan gear shaft 22.

[0026] As a further preferred embodiment, the primary gear stack 21 comprises a fixedly arranged first lower gear 211 meshing with the motor gear 11 and a first upper gear 212 meshing with the secondary gear stack 24.

[0027] As a further preferred embodiment, the secondary gear stack 24 comprises a fixedly arranged second lower gear 241 meshing with the first upper gear 212 and a second upper gear 242 meshing with the fan gear 23.

[0028] As a further preferred embodiment, the fan gear 23 comprises a fan gear body 231 and an outer gear 232 arranged outside the fan gear body 231, a mounting hole 2311 is arranged through the middle of the fan gear body 231, and a boss 2312 is arranged at the upper end of the mounting hole 2311, so as to improve the stability of the lifting device.

[0029] The preferred embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor based on the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment based on the existing technology within the scope of the claims shall be within the protection scope.

Claims

1. A compact electronic actuator of a gear structure, characterized by, The utility model relates to a drive motor (1) and gear assembly (2) are included, the output shaft of drive motor (1) is provided with motor gear (11), gear assembly (2) includes and primary gear (21), fan gear shaft (22), fan gear (23), secondary gear (24) and gear shaft (25), primary gear (21) is set in fan gear shaft (22) and is engaged with motor gear (11), fan gear (23) is fixed by injection molding and is provided on fan gear shaft (22) and is coaxial with primary gear (21), secondary gear (24) is set in gear shaft (25) and is engaged with primary gear (21) and fan gear (23), gear shaft (25) is concentric with the projection of the output shaft of drive motor (1) on horizontal plane. Fan gear shaft (22) is provided with knurled part (221), and fan gear (23) is provided on the knurled part (221) of fan gear shaft (22) by injection molding.

2. A compact electronic actuator of a gear structure according to claim 1, characterized in that, Primary gear (21) includes fixedly arranged first lower gear (211) and first upper gear (212), first lower gear (211) is engaged with motor gear (11), and first upper gear (212) is engaged with secondary gear (24).

3. A compact electronic actuator of gear structure according to claim 1, characterized in that, Secondary gear (24) includes fixedly arranged second lower gear (241) and second upper gear (242), second lower gear (241) is engaged with first upper gear (212), and second upper gear (242) is engaged with fan gear (23).

4. A compact electronic actuator of a gear structure according to claim 3, characterized in that, Fan gear (23) includes fan gear body (231) and outer gear (232) arranged outside fan gear body (231), and mounting hole (2311) is arranged in the middle of fan gear body (231), and boss (2312) is arranged on the upper end of mounting hole (2311).

5. A compact electronic actuator of gear structure according to claim 1, characterized in that, ​

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