An electronically controlled actuator motor

Abstract

The present invention discloses an electronically controlled actuator motor, which includes a housing, a motor assembly, a transmission gear set, an output shaft, a sliding bearing, and a grounding component. The housing is an injection-molded shell, the motor assembly is installed inside the housing, the transmission gear set is respectively meshed and connected with the output end of the motor assembly and the output shaft, the sliding bearing is sleeved on the bottom end of the output shaft, the grounding component is arranged inside the housing, and one end of the grounding component abuts against the cover plate of the motor assembly, and the other end of the grounding component abuts against the inner ring of the sliding bearing. For the electronically controlled actuator motor disclosed in this application, by adding a grounding component inside the motor assembly, one end of the grounding component is electrically connected to the motor assembly, the other end of the grounding component is electrically connected to the sliding bearing, and then electrically connected to the ground through the output shaft and the external vehicle, realizing the electrical connection between the motor assembly and the vehicle, avoiding the situation of using metal parts for motor grounding in the prior art, reducing the metal parts of the vehicle, and achieving product lightweighting.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly to an electronically controlled actuator motor. Background Art

[0002] As a kind of modern means of transportation, automobiles play a very important role, and the requirement for the lightweight of the whole vehicle is getting higher and higher to meet the needs during use.

[0003] Most of the electronically controlled actuators of automobiles use a motor as the power source to control the actions of products. In the field of vehicle electronically controlled actuators, due to the particularity of its application environment, the electromagnetic compatibility performance requirements for the electronically controlled actuator itself are very high. Coupled with the influence of surrounding components in the working environment, the electromagnetic compatibility performance requirements for the electronically controlled actuator are further aggravated. And the electromagnetic compatibility performance of the motor is the main factor affecting the electromagnetic compatibility performance of the electronically controlled actuator. Grounding the motor to the whole vehicle will significantly improve the electromagnetic compatibility performance of the motor.

[0004] At present, there are many forms of grounding the motor of the whole vehicle to the whole vehicle. For example, one end of the grounding terminal is electrically connected to the brush through the brush base and the brush arm, and the other end is externally disposed outside the housing to achieve grounding to the whole vehicle. For another example, in the motor module, a pole cover for accommodating the electromechanical component is provided, and at least one fixing element is arranged on the pole cover. The pole cover can be connected to the component of the electric driver or the vehicle body by means of the fixing element. The fixing element has at least one additional contact element for conductively connecting the pole cover to the vehicle body grounding wire to realize motor grounding. For another example, the supercharger actuator usually adopts a metal housing or a metal cover plate. The motor makes conductive contact with the metal housing or the metal cover plate, and then the metal housing or the metal cover plate is directly or indirectly grounded to the vehicle. The supercharger actuator makes the motor contact with the metal housing, and connects the metal housing to the supercharger housing by means of screw locking. Then the motor is indirectly grounded on the supercharger housing, and the supercharger housing is grounded. Therefore, the motor inside the actuator is indirectly grounded to the whole vehicle. However, the above-mentioned motor grounding forms all use a metal housing or a metal cover plate. Although the motor can be directly grounded, the weight of the product will be greatly increased. In the case of the increasing requirement for the lightweight of the whole vehicle, it is necessary to minimize the mass of each component to meet the requirement of vehicle lightweight. Obviously, the above-mentioned grounding forms are not conducive to the lightweight requirement of the whole vehicle components.

[0005] Therefore, how to solve the technical problem that the motor grounding in the prior art cannot meet the lightweight requirement of the whole vehicle is a technical problem that those skilled in the art need to solve urgently. Summary of the Invention

[0006] The object of the present invention is to provide an electronically controlled actuator motor, which adds a motor grounding component embedded in a plastic housing. The use of a plastic housing can also ground the motor, achieving product lightweighting.

[0007] To solve the above technical problems, the present invention provides an electronically controlled actuator motor, including a housing, a motor assembly, a transmission gear set, an output shaft, a sliding bearing and a grounding component. The housing is an injection molded housing, the motor assembly is installed in the housing, the transmission gear set is respectively meshed and connected with the output end of the motor assembly and the output shaft, the sliding bearing is sleeved at the bottom end of the output shaft, the grounding component is arranged in the housing, and one end of the grounding component abuts against the cover plate of the motor assembly, and the other end of the grounding component abuts against the inner ring of the sliding bearing.

[0008] Preferably, a sector gear meshing and driving with the transmission gear set is sleeved on the output shaft.

[0009] Preferably, a needle roller bearing is also sleeved on the output shaft, and a connecting rod is installed at the top end of the output shaft.

[0010] Preferably, the transmission gear set includes an intermediate pinion, an intermediate gear and an intermediate gear pin. The bottom of the intermediate pinion is provided with an annular inner tooth meshing with the output end gear of the motor assembly, a pinion column meshing with the outer tooth of the intermediate gear is provided at the center of the intermediate pinion, the intermediate gear pin is inserted into the pinion column, and a large gear column meshing with the sector gear is provided at the center of the intermediate gear.

[0011] Preferably, it further includes a small cover plate and a large cover plate arranged at both ends of the housing. A corrugated washer is installed on the small cover plate, and the large cover plate is used for installing the intermediate gear and the needle roller bearing.

[0012] Preferably, the grounding component is an elastic metal sheet.

[0013] Preferably, one end of the grounding component is provided with a convex edge connecting portion, and the other end of the grounding component is provided with a hook-shaped connecting portion.

[0014] Preferably, a limiting hole is provided in the middle of the grounding component.

[0015] The electronically controlled actuator motor provided by the present invention includes a housing, a motor assembly, a transmission gear set, an output shaft, a sliding bearing and a grounding component. The housing is an injection molded housing, the motor assembly is installed in the housing, the transmission gear set is respectively meshed and connected with the output end of the motor assembly and the output shaft, the sliding bearing is sleeved at the bottom end of the output shaft, the grounding component is arranged in the housing, and one end of the grounding component abuts against the cover plate of the motor assembly, and the other end of the grounding component abuts against the inner ring of the sliding bearing. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0017] Figure 1 Schematic diagram of the overall structure of a specific implementation manner provided by the present invention;

[0018] Figure 2 For Figure 1 Cross-sectional view of the shown structure;

[0019] Figure 3 For Figure 1 Schematic diagram of the overall structure shown with the housing removed;

[0020] Figure 4 For Figure 1 Schematic diagram of the grounding component structure shown.

[0021] Among them, Figures 1-4 In:

[0022] Outer shell - 1, motor assembly - 2, transmission gear set - 3, intermediate pinion - 301, intermediate large gear - 302, intermediate gear pin - 303, output shaft - 4, sliding bearing - 5, grounding component - 6, convex edge connection part - 601, hook-shaped connection part - 602, with a limit hole provided in the middle - 603, sector gear - 7, needle bearing - 8, connecting rod - 9, small cover plate - 10, large cover plate - 11. Specific implementation manner

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] Please refer to Figures 1 to 4 , Figure 1 Schematic diagram of the overall structure of a specific implementation manner provided by the present invention; Figure 2 For Figure 1 Cross-sectional view of the shown structure; Figure 3 For Figure 1 Schematic diagram of the overall structure shown with the housing removed; Figure 4 For Figure 1 Schematic diagram of the grounding component structure shown.

[0025] In a specific embodiment provided by the present invention, it mainly includes a housing 1, a motor assembly 2, a transmission gear set 3, an output shaft 4, a sliding bearing 5, and a grounding assembly 6. The housing 1 is an injection-molded shell. The motor assembly 2 is installed inside the housing 1. The transmission gear set 3 is meshed and connected to the output end of the motor assembly 2 and the output shaft 4 respectively. The sliding bearing 5 is sleeved on the bottom end of the output shaft 4. The grounding assembly 6 is arranged inside the housing 1, and one end of the grounding assembly 6 abuts against the cover plate of the motor assembly 2, and the other end of the grounding assembly 6 abuts against the inner ring of the sliding bearing 5.

[0026] Among them, the housing 1 is a motor housing. The motor assembly 2 is installed inside the housing 1 to output power for the whole vehicle. The transmission gear set 3 is meshed and connected to the output end of the motor assembly 2 and the output shaft 4 respectively to transmit the power output by the motor to the output shaft 4. The sliding bearing 5 is sleeved on the bottom end of the output shaft 4. The output shaft 4 and the sliding bearing 5 cooperate to further transmit the power to the power demand component. The grounding assembly 6 is arranged inside the housing 1, and one end of the grounding assembly 6 abuts against the cover plate of the motor assembly 2, and the other end of the grounding assembly 6 abuts against the inner ring of the sliding bearing 5. The cover plate of the motor assembly 2, the sliding bearing 5, and the output shaft 4 are all necessary metal parts. The grounding assembly 6 is grounded to the whole vehicle through the above power transmission connection method.

[0027] Specifically, in the actual application process, first, one end of the grounding assembly 6 is abutted against the cover plate of the motor assembly 2 to achieve a metal electrical connection between the grounding assembly 6 and the motor assembly 2. Then, the other end of the grounding assembly 6 is abutted against the inner ring of the sliding bearing 5, also making the grounding assembly 6 form a metal electrical connection with the sliding bearing 5. In this way, a metal electrical connection is formed between the motor assembly 2 and the sliding bearing 5. Since the sliding bearing 5 is a power transmission component, the sliding bearing 5 is connected to a connecting rod 9 outside the motor, and the connecting rod 9 is metal-connected to the output pin. Therefore, a metal electrical connection is formed between the motor assembly 2 and the output pin, thus realizing the grounding of the motor assembly 2 to the whole vehicle. In the whole scheme, only by adding the grounding assembly 6 can the grounding of the motor assembly 2 to the whole vehicle be completed, and the weight of the grounding assembly 6 itself is negligible compared to the whole vehicle. However, through the above grounding form of the motor assembly 2, the housing 1 of the motor assembly 2 can be changed from a metal part to a plastic shell. Thus, while realizing the grounding of the motor assembly 2 to the whole vehicle, the overall weight of the motor assembly 2 is greatly reduced, meeting the requirement of vehicle lightweight.

[0028] In order to optimize the advantage that the electric control actuator motor in the above embodiments can further meet the requirements of vehicle lightweighting, a sector gear 7 meshing with the transmission gear set 3 is sleeved on the output shaft 4. In the actual application process, the motor assembly 2 outputs power to the transmission gear set 3, and the transmission gear set 3 needs to transmit the power to the output shaft 4. At this time, a transmission mechanism is required. In this solution, the transmission mechanism is set as the sector gear 7. The motor assembly 2 transmits the power to the sector gear 7 through the transmission gear set 3. The sector gear 7 is sleeved with the output shaft 4. Therefore, the sector gear 7 can transmit the power to the output shaft 4 to achieve the purpose of power transmission.

[0029] Based on the power transmission situation in the above solution, a needle roller bearing 8 is also sleeved on the output shaft 4, and a connecting rod 9 is installed at the top of the output shaft 4. The needle roller bearing 8 has a compact radial structure. When the inner diameter size and load capacity are the same as those of other types of bearings, its outer diameter is the smallest, which is especially suitable for the supporting structure where the radial installation size of the motor assembly 2 is restricted. Due to the compact structure and small outer diameter of the needle roller bearing 8, it also meets the requirements of vehicle lightweighting; the connecting rod 9 can transmit the power of the motor assembly 2 to the power demand components and at the same time make a metal electrical connection with the external vehicle body, realizing the grounding of the motor assembly 2.

[0030] Further, the transmission gear set 3 includes an intermediate pinion 301, an intermediate gear 302 and an intermediate gear pin 303. The bottom of the intermediate pinion 301 is provided with an annular inner tooth meshing with the output end gear of the motor assembly 2. A pinion column meshing with the external teeth of the intermediate gear 302 is provided at the center of the intermediate pinion 301. The intermediate gear pin 303 is inserted into the pinion column. A large gear column meshing with the sector gear 7 is provided at the center of the intermediate gear 302. In the actual application process, the motor assembly 2 outputs power and transmits the power to the annular inner tooth provided at the bottom of the intermediate pinion 301 through the output end. The intermediate pinion 301 is driven by the motor assembly 2 to rotate, and further drives the intermediate gear 302 to rotate, thereby transmitting the power to the intermediate gear 302. The large gear column of the intermediate gear 302 meshes with the sector gear 7. Therefore, the rotation of the intermediate gear 302 drives the sector gear 7 to rotate. So, the sector gear 7 transmits the power to the output shaft 4 sleeved with the sector gear 7, and the output shaft 4 then outputs the power upward to the outside of the motor assembly 2 to complete the power transmission work.

[0031] It should be noted that the electric control actuator motor further includes a small cover plate 10 and a large cover plate 11 provided at both ends of the housing 1. A wave washer 12 is installed on the small cover plate 10, and the large cover plate 11 is used to install the intermediate gear 302 and the needle roller bearing 8. The wave washer 12 improves the overall stability performance of the motor assembly and ensures the stable power output. The large cover plate 11 is used to install the intermediate gear 302 and the needle roller bearing 8, ensuring the stable performance of the motor assembly 2 during the power transmission process.

[0032] Further, the grounding component 6 is an elastic metal sheet. The grounding component 6 is arranged as an elastic metal sheet and elastically contacts the sliding bearing 5 and the cover plate of the motor assembly 2. Due to the elastic contact, even if there are dimensional errors during the contact of parts, they can be compensated for and reliably contacted, ensuring the reliability of the grounding of the motor assembly 2, further improving the electromagnetic compatibility performance of the motor, thereby improving the electromagnetic compatibility performance of the actuator, which is beneficial to the production and use of the whole vehicle.

[0033] It should also be noted that one end of the grounding component 6 is provided with a convex edge connecting portion 601, and the other end of the grounding component 6 is provided with a hook-shaped connecting portion 602; a limiting hole 603 is provided in the middle of the grounding component 6. The convex edge connecting portion 601 is used to contact the cover plate of the motor assembly 2. The convex edge structure is more conducive to the contact between the grounding component 6 and the cover plate of the motor assembly 2, improving the reliability. The hook-shaped connecting portion 602 is used to connect with the sliding bearing 5. The hook-shaped structure is more conducive to the contact between the grounding component 6 and the sliding bearing 5, further improving the reliability of the grounding of the motor assembly 2.

[0034] In summary, the motor of the electric control actuator provided in this embodiment mainly includes a housing, a motor assembly, a transmission gear set, an output shaft, a sliding bearing, and a grounding component. The housing is an injection-molded housing. The motor assembly is installed in the housing. The transmission gear set is respectively meshed and connected with the output end of the motor assembly and the output shaft. The sliding bearing is sleeved on the bottom end of the output shaft. The grounding component is arranged in the housing, and one end of the grounding component abuts against the cover plate of the motor assembly, and the other end of the grounding component abuts against the inner ring of the sliding bearing. The motor of the electric control actuator disclosed in this application realizes the electrical connection between the motor assembly and the whole vehicle by adding a grounding component inside the motor assembly, with one end of the grounding component electrically connected to the motor assembly and the other end of the grounding component electrically connected to the sliding bearing, and then electrically connecting and grounding with the outside whole vehicle through the output shaft, avoiding the situation of using metal parts for motor grounding in the prior art, reducing the metal parts of the whole vehicle, and realizing the lightweight of the product.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electronically controlled actuator motor, characterized in that, It includes a housing (1), a motor assembly (2), a transmission gear set (3), an output shaft (4), a sliding bearing (5) and a grounding assembly (6). The housing (1) is an injection-molded housing. The motor assembly (2) is installed inside the housing (1). The transmission gear set (3) is meshed and connected to the output end of the motor assembly (2) and the output shaft (4) respectively. The sliding bearing (5) is sleeved on the bottom end of the output shaft (4). The grounding assembly (6) is arranged inside the housing (1), and one end of the grounding assembly (6) abuts against the cover plate of the motor assembly (2), and the other end of the grounding assembly (6) abuts against the inner ring of the sliding bearing (5).

2. The electric control actuator motor according to claim 1, characterized in that, A sector gear (7) meshed with the transmission gear set (3) is sleeved on the output shaft (4).

3. The electric control actuator motor according to claim 2, wherein, A needle roller bearing (8) is also sleeved on the output shaft (4), and a connecting rod (9) is installed at the top end of the output shaft (4).

4. The electric control actuator motor according to claim 3, characterized in that, The transmission gear set (3) includes an intermediate pinion (301), an intermediate gear (302) and an intermediate gear pin (303). The bottom of the intermediate pinion (301) is provided with an annular inner tooth meshed with the output end gear of the motor assembly (2). A pinion column meshed with the outer teeth of the intermediate gear (302) is provided at the center of the intermediate pinion (301). The intermediate gear pin (303) is inserted into the pinion column. A large gear column meshed with the sector gear (7) is provided at the center of the intermediate gear (302).

5. The electric control actuator motor according to claim 4, characterized in that, It also includes a small cover plate (10) and a large cover plate (11) arranged at both ends of the housing (1). A wave washer (12) is installed on the small cover plate (10). The large cover plate (11) is used to install the intermediate gear (302) and the needle roller bearing (8).

6. The electric control actuator motor according to any one of claims 1 to 5, characterized in that, The grounding assembly (6) is an elastic metal sheet.

7. The electric control actuator motor according to claim 6, characterized in that, One end of the grounding assembly (6) is provided with a convex edge connecting part (601), and the other end of the grounding assembly (6) is provided with a hook-shaped connecting part (602).

8. The electric control actuator motor according to claim 7, characterized in that A limiting hole (603) is provided in the middle of the grounding assembly (6).

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