Compact electric steering engine structure

Abstract

The utility model relates to the technical field of electric steering engines, in particular to a compact electric steering engine structure which comprises a motor and an angle sensor, one side of the motor is connected with a hollow shell, the bottom end of the shell is detachably provided with a bottom plate, and the motor can drive a transmission gear set to rotate. The transmission gear set comprises a first bevel gear detachably installed at the output end of the motor, and the first bevel gear is connected with a third gear set in an engaged mode through a plurality of gears. According to the utility model, through the matching of the ball bearing sleeved at the lower half part of the output shaft and the gear ring, in the rotating process of the transmission gear set, the five-stage transmission effect is realized through the four transmission shafts, and the transmission ratio of the transmission gear set is effectively increased in a space range with the same size; interference between the sector gear and the transmission gear set in the rotating process is avoided, so that the sector gear with the larger transmission ratio can be selected, and the space is utilized more effectively.

Description

Technical Field

[0001] The utility model relates to the technical field of electric steering gears, in particular to a compact electric steering gear structure. Background Art

[0002] A servo is an electric actuator commonly used to control the angle position. In drones, smart ammunition and other flying devices, it is used to control the rotation of wings, tails, rudders and other components. Through the control of the servo, the aviation device can achieve stable flight and various flight maneuvers.

[0003] The space inside the aircraft is very limited, and the various components need to be arranged reasonably. If the servo is too large, it may take up too much space, causing other key components to be unable to be installed or work properly. Therefore, in order to reduce the size of the aircraft or save space, it is usually necessary to choose an electric servo that occupies a smaller volume. However, smaller electric servos often provide insufficient transmission ratios. The transmission ratio determines the response speed of the servo to the control signal. A small transmission ratio will generate a relatively small torque, and it is impossible to achieve precise control of the position. More time is required to adjust the position of the control surface. In high-speed flight or maneuvers that require a quick response, this may cause the aircraft to respond more slowly, thereby reducing flight performance.

[0004] Therefore, it is necessary to invent a compact electric servo structure to solve the above problems. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the purpose of the utility model is to provide a compact electric servo structure, which solves the problem that in order to reduce the size of the aircraft or save space in actual use, it is usually necessary to select an electric servo with a smaller volume, but the smaller electric servo often provides an insufficient transmission ratio. The transmission ratio determines the response speed of the servo to the control signal. After receiving the control signal, the servo with a too low transmission ratio needs more time to adjust the position of the control surface. In high-speed flight or maneuvers that require a quick response, this may cause the aircraft to respond more slowly, thereby reducing the flight performance.

[0006] In order to achieve the above objectives, the utility model adopts the following technical solutions:

[0007] A compact electric steering gear structure comprises a motor and an angle sensor, wherein a hollow shell is connected to one side of the motor, a bottom plate is detachably mounted on the bottom end of the shell, an output end of the motor is located inside a cavity formed by the shell and the bottom plate, the motor can drive a transmission gear set to rotate, the transmission gear set comprises a bevel gear 1 detachably mounted on the output end of the motor, the bevel gear 1 is meshedly connected to a third gear set via a plurality of gears, a driving gear in the third gear set is meshedly connected to a sector gear, and the sector gear is coaxially mounted with an output shaft.

[0008] As a preferred solution of the present utility model, the transmission gear set also includes a first gear set, the driven gear in the first gear set is a bevel gear meshingly connected with a bevel gear, the driving gear in the first gear set is meshingly connected with the driven gear of the second gear set, the driving gear in the second gear set is meshingly connected with a gear ring, and the gear ring is meshingly connected with the driven gear of the third gear set.

[0009] As a preferred solution of the utility model, the inner side wall of the gear ring is connected to a ball bearing, and the ball bearing is sleeved on the outer surface of the lower half of the output shaft.

[0010] As a preferred solution of the utility model, a groove is opened in the middle of the base plate, the angle sensor is installed inside the groove opened in the base plate, the detection end of the angle sensor is sleeved on the bottom end of the output shaft, and a mounting plate for fixing the angle sensor is installed in the middle of the base plate.

[0011] As a preferred solution of the utility model, a plurality of grooves for installing the gear shaft in the transmission gear set are opened inside the outer shell and the base plate, and the outer side walls of the gear shaft in the groove are sleeved with positioning bearings, and the inner side wall of the outer shell is provided with two limit blocks for limiting the rotation angle of the sector gear.

[0012] As a preferred solution of the utility model, the outer side wall of the output shaft is sleeved with a sealing block fixed to the bottom wall of the housing, and a sealing ring is arranged in the inner side wall groove of the sealing block.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] In the utility model, by the combination of the ball bearing and the gear ring sleeved on the lower part of the output shaft, during the rotation of the transmission gear set, the five-stage transmission effect is achieved through the four transmission shafts, and the transmission ratio of the transmission gear set is effectively increased within the same size of the space. The arrangement of the sector gear and the limit block avoids the interference between the sector gear and the transmission gear set during the rotation of the sector gear, so that the sector gear with a larger transmission ratio can be selected, and the space can be used more effectively. Through a more compact gear distribution and arrangement, a larger transmission ratio of the servo under the same size can be achieved. A higher transmission ratio means that the servo can respond to the control signal more quickly, realize rapid action adjustment, and enhance stability and safety in high-speed flight. While ensuring that the transmission ratio meets the use requirements, more volume can be saved. The servo with a smaller volume and lighter weight can effectively improve the performance and efficiency of the aviation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall top view structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model when viewed from above;

[0017] Figure 3 This is a schematic diagram of the structure of the utility model when the bottom plate is removed;

[0018] Figure 4 It is a schematic diagram of the overall partial cross-sectional structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the utility model after removing the outer shell.

[0020] Explanation of the accompanying drawings: 1. Motor; 2. Housing; 3. Output shaft; 4. Base plate; 5. Mounting plate; 6. Angle sensor; 7. Positioning bearing; 8. Limit block; 9. Transmission gear set; 901. Bevel gear one; 902. First gear set; 903. Second gear set; 904. Gear ring; 905. Third gear set; 906. Fan gear; 10. Sealing block; 11. Ball bearing; 12. Sealing ring. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0022] The utility model provides Figure 1-5 A compact electric servo structure shown in the figure includes a motor 1 and an angle sensor 6, one side of the motor 1 is connected to an internal hollow shell 2, the bottom end of the shell 2 is detachably mounted with a base plate 4, the output end of the motor 1 is located inside a cavity formed by the shell 2 and the base plate 4, the motor 1 can drive a transmission gear set 9 to rotate, the transmission gear set 9 includes a bevel gear 901 detachably mounted on the output end of the motor 1, the bevel gear 901 is meshedly connected to a third gear set 905 through a plurality of gears, the driving gear in the third gear set 905 is meshedly connected to a fan gear 906, the fan gear 906 is coaxially mounted with the output shaft 3, by coaxially mounting the fan gear 906 with the output shaft 3, the hierarchically amplified transmission ratio can be transmitted to the output end, so that when the servo is in a high-speed flight state, the output of a force of sufficient magnitude is ensured to resist the force exerted on it by the high-speed airflow, thereby ensuring the corresponding speed of the servo.

[0023] The transmission gear set 9 also includes a first gear set 902, in which the driven gear of the first gear set 902 is a bevel gear meshing with the bevel gear 1 901, the driving gear of the first gear set 902 is meshing with the driven gear of the second gear set 903, the driving gear of the second gear set 903 is meshing with the gear ring 904, and the gear ring 904 is meshing with the driven gear of the third gear set 905. The diameter of the driving gear in the transmission gear set 9 is smaller than the diameter of the driven gear, so as to ensure the step-by-step increase of the transmission ratio during the rotation process. A higher transmission ratio means that under the same control signal, the servo needs less energy to rotate to the specified position, which helps to improve the energy efficiency of the aviation device and extend the flight time.

[0024] The inner wall of the gear ring 904 is connected to a ball bearing 11, and the ball bearing 11 is sleeved on the outer surface of the lower half of the output shaft 3. The setting of the ball bearing 11 can make the gear ring 904 and the output shaft 3 rotate at different speeds at the same time. The sleeve of the gear ring 904 effectively saves the space occupied by a gear shaft, so that the servo can save more volume and reduce the weight of the equipment.

[0025] A groove is opened in the middle of the bottom plate 4, and the angle sensor 6 is installed inside the groove opened in the bottom plate 4. The detection end of the angle sensor 6 is sleeved on the bottom end of the output shaft 3. A mounting plate 5 for fixing the angle sensor 6 is installed in the middle of the bottom plate 4. The angle sensor 6 is connected to the bottom end of the output shaft 3, and can monitor the rotation angle of the output shaft 3 at all times, provide feedback in time, ensure the control accuracy of the servo, and facilitate accurate adjustment of the flight attitude of the aviation device.

[0026] The shell 2 and the base plate 4 are provided with a plurality of grooves for installing the gear shaft in the transmission gear set 9. The outer side walls of the gear shaft in the grooves are sleeved with positioning bearings 7. The inner side wall of the shell 2 is provided with two limit blocks 8 for limiting the rotation angle of the sector gear 906. The positioning bearings 7 are provided to reduce the force loss of the transmission gear set 9 during the rotation process, and at the same time facilitate the positioning and installation of the gear shaft, reduce the energy consumption of the servo, and extend the flight time of the aircraft.

[0027] The outer wall of the output shaft 3 is sleeved with a sealing block 10 fixed to the bottom wall of the outer shell 2, and a sealing ring 12 is arranged in the inner wall groove of the sealing block 10. The arrangement of the sealing block 10 and the sealing ring 12 can dynamically seal the output shaft 3, ensure the movement accuracy of the steering gear, and avoid the reduction of the transmission ratio or failure of the steering gear due to impurities entering the steering gear.

[0028] The utility model realizes a five-stage transmission effect through the combination of the ball bearing 11 and the gear ring 904 sleeved on the lower part of the output shaft 3 during the rotation of the transmission gear set 9 through four transmission shafts, and effectively increases the transmission ratio of the transmission gear set 9 within the same size of the space. The arrangement of the sector gear 906 and the limit block 8 avoids the interference between the sector gear 906 and the transmission gear set 9 during the rotation, so that the sector gear 906 with a larger transmission ratio can be selected, and the space can be used more effectively. Through a more compact gear distribution and arrangement, the servo with a larger transmission ratio under the same size can be achieved. A higher transmission ratio means that the servo can respond to control signals more quickly, realize rapid action adjustment, and enhance stability and safety in high-speed flight. While ensuring that the transmission ratio meets the use requirements, more volume can be saved. The servo with a smaller volume and lighter weight can effectively improve the performance and efficiency of the aviation device.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A compact electric steering gear structure, characterized in that: The invention comprises a motor (1) and an angle sensor (6), wherein one side of the motor (1) is connected to an internally hollow housing (2), a bottom plate (4) is detachably mounted on the bottom end of the housing (2), an output end of the motor (1) is located inside a cavity formed by the housing (2) and the bottom plate (4), the motor (1) can drive a transmission gear set (9) to rotate, the transmission gear set (9) comprises a bevel gear 1 (901) detachably mounted on the output end of the motor (1), the bevel gear 1 (901) is meshedly connected to a third gear set (905) via a plurality of gears, a driving gear in the third gear set (905) is meshedly connected to a fan gear (906), and the fan gear (906) is coaxially mounted with an output shaft (3).

2. A compact electric steering gear structure according to claim 1, characterized in that: The transmission gear set (9) further comprises a first gear set (902), wherein the driven gear in the first gear set (902) is a bevel gear meshingly connected with the bevel gear 1 (901), the driving gear in the first gear set (902) is meshingly connected with the driven gear of the second gear set (903), the driving gear in the second gear set (903) is meshingly connected with a gear ring (904), and the gear ring (904) is meshingly connected with the driven gear of the third gear set (905).

3. A compact electric steering gear structure according to claim 2, characterized in that: The inner side wall of the gear ring (904) is connected to a ball bearing (11), and the ball bearing (11) is sleeved on the outer surface of the lower half of the output shaft (3).

4. A compact electric steering gear structure according to claim 1, characterized in that: A groove is provided in the middle of the base plate (4), the angle sensor (6) is installed inside the groove provided in the base plate (4), the detection end of the angle sensor (6) is sleeved on the bottom end of the output shaft (3), and a mounting plate (5) for fixing the angle sensor (6) is installed in the middle of the base plate (4).

5. A compact electric steering gear structure according to claim 2, characterized in that: The outer shell (2) and the bottom plate (4) are provided with a plurality of grooves for installing the gear shafts in the transmission gear set (9), and the outer side walls of the gear shafts in the grooves are sleeved with positioning bearings (7), and the inner side wall of the outer shell (2) is provided with two limit blocks (8) for limiting the rotation angle of the sector gear (906).

6. A compact electric steering gear structure according to claim 1, characterized in that: The outer wall of the output shaft (3) is sleeved with a sealing block (10) fixed to the bottom wall of the outer shell (2), and a sealing ring (12) is arranged in the inner wall groove of the sealing block (10).

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