CN218733630U

CN218733630U - Noise reduction rotor assembly and automobile actuator thereof

Info

Publication number: CN218733630U
Application number: CN202222767259.1U
Authority: CN
Inventors: 何基中; 王志强; 成彪
Original assignee: Keboda Chongqing Intelligent Control Technology Co ltd
Current assignee: Keboda Chongqing Intelligent Control Technology Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-03-24
Anticipated expiration: 2032-10-20

Abstract

The utility model discloses a noise reduction rotor assembly and an automobile actuator thereof, wherein the noise reduction rotor assembly comprises a rotor piece and an insert, the axis position of the rotor piece is provided with an inner hole, the inner hole runs through two end surfaces of the rotor piece in the axis direction, the insert is arranged in the inner hole, a shaft hole is arranged in the insert, the shaft hole is coaxial with the inner hole, the shaft hole runs through two end surfaces of the insert in the axis direction, the inner diameter of the shaft hole is smaller than that of the inner hole, and a limit structure is arranged between the insert and the rotor piece; the automobile actuator comprises the noise reduction rotor assembly. The utility model provides a rotor subassembly and automotive actuator of making an uproar falls through setting up an inserts in the rotor spare, makes its hole that replaces the rotor spare among the prior art come to be connected with the rotor shaft cooperation to reduce the fit clearance, increase substantially the precision, the noise abatement.

Description

Noise reduction rotor assembly and automobile actuator thereof

Technical Field

The utility model relates to an automotive actuator technical field especially relates to a rotor subassembly of making an uproar and automotive actuator falls.

Background

With the increasing demands of customers on the comfort of the driving environment of the automobile, the requirement for reducing the working noise decibel value of the automobile actuator is more and more strict. The noise source of a general automobile actuator is that a clearance fit is formed between a rotor inner hole and a rotor shaft, the rotor inner hole and the rotor shaft are subjected to high-frequency impact to generate noise due to radially unbalanced magnetic field force in the rotation process of a rotor, and the noise is increased when the fit clearance is increased. The size of an inner hole of a plastic part generally adopted by a rotor of the conventional automobile actuator is guaranteed by depending on the precision of a mould, and the plastic part is easy to deform and shrink after existing in the manufacturing process, so that the size and the shape of the inner hole are difficult to meet the high precision. The clearance precision of the matching of the inner hole and the shaft, the material performance of the friction coupling part and the relation between the torque and the speed which are actually applied are important subjects researched in the industry.

Therefore, in combination with the above-mentioned existing technical problems, new innovations are necessary.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve not enough among the prior art, provide a rotor subassembly of making an uproar falls, through set up an inserts in the rotor spare, make its hole that replaces the rotor spare among the prior art come to be connected with the rotor shaft cooperation to reduce fit clearance, increase substantially the precision, the noise abatement. Still provide simultaneously one kind and have this automobile actuator who makes an uproar rotor subassembly that falls, the noise is effectively alleviated.

For realizing the utility model purpose, the utility model provides a rotor subassembly of making an uproar falls, it includes rotor spare and inserts, the axis position of rotor spare is provided with the hole, the hole runs through two terminal surfaces of rotor spare in the axis direction, the inserts set up in the hole, be provided with the shaft hole in the inserts, the shaft hole with the coaxial setting of hole, the shaft hole runs through two terminal surfaces of inserts in the axis direction, the internal diameter in shaft hole is less than the internal diameter of hole, the inserts with be provided with limit structure between the rotor spare.

Further, the insert is a copper-based powder metallurgy part.

Furthermore, the insert is provided with an insert main body part and an insert limiting part along the axis direction, the outer diameter of the insert limiting part is larger than that of the insert main body part, and a plurality of limiting grooves are formed in the insert limiting part.

Further, the rotor piece includes axial region and drive division in proper order along the axis direction, the external diameter of drive division is greater than the external diameter of axial region, be provided with gear structure on the axial region.

Furthermore, a counter bore is formed in one side, away from the shaft part, of the driving part, and the counter bore is communicated with the inner hole.

The utility model also provides an automobile actuator, it includes epitheca, inferior valve, stator spare, rotor shaft, output shaft, circuit board and the foretell rotor subassembly of making an uproar that falls, the epitheca block is in on the inferior valve, the epitheca with form the holding chamber between the inferior valve, stator spare, rotor shaft, output shaft, circuit board and fall the rotor subassembly of making an uproar set up respectively in the holding intracavity, the stator spare has and holds the chamber, it passes through to fall the rotor subassembly of making an uproar the inserts cover is located on the rotor shaft, the both ends of rotor shaft respectively with the epitheca with the inferior valve is connected, the rotor spare at least part of the position of falling the rotor subassembly of making an uproar hold in the chamber, the stator spare with the circuit board is connected, the rotor spare with output shaft transmission fit, stator spare circular telegram back drive the rotor spare rotates, and then drives the output shaft rotates.

Further, the rotor piece and the output shaft are in gear transmission.

Furthermore, two ends of the output shaft respectively face the upper shell and the lower shell, and through holes are respectively formed in the positions, corresponding to the output shaft, of the upper shell and/or the lower shell.

Furthermore, the stator piece is fixedly connected with the lower shell, and the circuit board is positioned between the stator piece and the upper shell.

Furthermore, one end of the rotor shaft is provided with an anti-skid structure.

Compared with the prior art, the noise reduction rotor assembly and the automobile actuator thereof at least have one or more of the following beneficial effects:

(1) According to the noise reduction rotor assembly, the insert is embedded in the rotor part, and the copper-based powder metallurgy part is preferably adopted, so that when the noise reduction rotor assembly is sleeved on the rotor shaft, the insert is matched with the rotor shaft, compared with the original rotor part, an inner hole is directly matched with the rotor shaft, the accuracy is higher, the wear resistance is higher, the assembly accuracy between the rotor part and the rotor shaft can be ensured, the matching clearance is reduced, and the noise reduction effect is further realized;

(2) According to the noise reduction rotor assembly, the limiting structure is arranged between the insert and the rotor piece, so that the limiting structure can be formed when the base powder metallurgy insert is injected into the rotor piece, and further the base powder metallurgy insert is prevented from rotating in the rotor piece;

(3) According to the noise reduction rotor assembly, the counter bore is formed in one end of the rotor part, so that the rotor part can be better adapted to the structure on the shell of the automobile actuator when being assembled, the internal structure of the automobile actuator is more compact, and the miniaturization design of a product is facilitated;

(4) Compared with the existing automobile actuator, the automobile actuator has lower noise by adopting the noise reduction rotor assembly, and is beneficial to improving the comfort of the automobile driving environment;

(5) The utility model provides an automobile actuator, the one end of its rotor shaft is provided with anti-skidding structure, can guarantee that the rotor shaft can not take place to rotate in the holding intracavity after the equipment.

Drawings

Fig. 1 is a perspective view of a noise reducing rotor assembly according to an embodiment of the present disclosure;

fig. 2 is a schematic perspective view of an insert according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a half-section of a noise reducing rotor assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic top view of an automotive actuator according to an embodiment of the present disclosure;

FIG. 5 is a cross-sectional schematic view of the vehicle actuator of FIG. 4 in position A;

fig. 6 is a schematic diagram of an exploded structure of an automobile actuator according to an embodiment of the present application.

The gear comprises a rotor, an inner hole, a shaft part, a first gear structure, a driving part, a counter bore, a 2-embedded part, a shaft hole, a main body part, an embedded part limiting part, a 231-limiting groove, an upper shell, a lower shell, a stator part, a rotor shaft, a 7-output shaft, a second gear structure, a circuit board and a 9-through hole, wherein 1 the rotor part, 11 the inner hole, 12 the shaft part, 121 the first gear structure, 13 the driving part, 14 the counter bore, 2 the embedded part, 21 the shaft hole, 22 the main body part, 23 the embedded part limiting part, 231 the limiting groove, 3 the upper shell, 4 the lower shell, 5 the stator part, 6 the rotor shaft, 7 the output shaft, 72 the second gear structure, 8 the circuit board and 9-through hole.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.

Examples

The present embodiment provides a noise reducing rotor assembly for an automotive actuator comprising a rotor member 1 and an insert 2, as shown in fig. 1 to 3. The rotor member 1 is preferably made of a plastic member, and an inner hole 11 is formed in an axial position of the rotor member 1, and the inner hole 11 penetrates through two end surfaces of the rotor member 1 in the axial direction, as shown in fig. 1 and 3. The rotor member 1 schematically shown in the drawings sequentially comprises a shaft portion 12 and a driving portion 13 along an axial direction, an outer diameter of the driving portion 13 is larger than an outer diameter of the shaft portion 12, and a gear structure is arranged on the shaft portion 12 and is defined as a first gear structure 121. The driving portion 13 is mainly used for matching with the stator member 5, so as to ensure that when the stator member 5 is electrified to generate a working magnetic field, the driving portion 13 can rotate under the action of the working magnetic field, for example, a coil or a permanent magnet structure is arranged in the driving portion 13, so that the rotation can be realized in the working magnetic field generated after the stator member 5 is electrified, and the specific working principle between the rotor member 1 and the stator member 5 is the prior art, and therefore, the details are not repeated herein. The first gear structure 121 is disposed on the shaft portion 12, so that when the rotor member 1 rotates, the output shaft 7 of the automobile actuator is driven to rotate through gear transmission.

The insert 2 is arranged in the bore 11, as shown in fig. 3. The insert 2 is preferably a copper-based powder metallurgy part which is formed by adopting a powder metallurgy die, and the specific manufacturing method is the prior art and is not described herein any more. The insert 2 is preferably embedded in the inner hole 11 of the rotor member 1 through an insert injection molding process, which is the prior art and is not described herein again.

The insert 2 is internally provided with a shaft hole 21, the shaft hole 21 and the inner hole 11 are coaxially arranged, and the shaft hole 21 penetrates through two end faces of the insert 2 in the axial direction, as shown in fig. 2. The inner diameter of the shaft hole 21 is smaller than that of the inner hole 11. And a limiting structure is arranged between the insert 2 and the rotor piece 1. For example, as shown in fig. 2, a limiting structure is schematically shown in the drawing, that is, the insert 2 is structurally designed to have an insert main body portion 22 and an insert limiting portion 23 along an axial direction, an outer diameter of the insert limiting portion 23 is larger than an outer diameter of the insert main body portion 22, and a plurality of limiting grooves 231 are formed in the insert limiting portion 23. Thus, when the powder metallurgy insert is injection molded in the rotor 1, the limiting groove 231 can limit the position of the rotor 1, and the powder metallurgy insert is prevented from rotating in the rotor 1. Of course, the limiting manner between the insert 2 and the rotor member 1 is not limited, and other structures are also possible, for example, a plurality of protrusions are arranged on the outer wall of the insert 2, and the same technical effect can be achieved. In specific implementation, the rotor assembly is sleeved on a rotor shaft 6 of an automobile actuator, the rotor assembly 1 is provided with the insert 2, so that the insert 2 can be matched with the rotor shaft 6 instead of an inner hole 11 of the rotor assembly 1, and after the rotor assembly is electrified, the insert 2 in the rotor assembly 1 and the rotor shaft 6 move in a friction mode. And the inserts 2 compare the working of plastics, and the precision is higher, and the wearability is also stronger to can guarantee rotor spare 1 with the equipment precision between the rotor shaft 6 reduces the fit clearance, and then realizes the effect of noise abatement.

In a further embodiment, a counter bore 14 is further provided on a side of the driving portion 13 away from the shaft portion 12, and the counter bore 14 is in communication with the inner bore 11. Through the arrangement of the counter bore 14, the rotor part 1 can be better adapted to the structure on the shell of the automobile actuator when being assembled, so that the internal structure of the automobile actuator is more compact, and the miniaturization design of a product is facilitated.

The embodiment also provides an automobile actuator, which mainly comprises an upper shell 3, a lower shell 4, a stator part 5, a rotor shaft 6, an output shaft 7, a circuit board 8 and the noise reduction rotor assembly, as shown in fig. 4 to 6. The upper shell 3 is clamped on the lower shell 4, and an accommodating cavity is formed between the upper shell 3 and the lower shell 4. The stator piece 5, the rotor shaft 6, the output shaft 7, the circuit board 8 and the noise reduction rotor assembly are respectively arranged in the accommodating cavity. Preferably, the stator member 5 is fixedly connected to the lower case 4, and the circuit board 8 is located between the stator member 5 and the upper case 3, as shown in fig. 5. The circuit board 8 is connected to the coil of the stator 5, and the stator 5 has a receiving cavity in which a working magnetic field is generated after the stator 5 is energized. The noise reduction rotor assembly is sleeved on the rotor shaft 6 through the insert 2, and two ends of the rotor shaft 6 are connected with the upper shell 3 and the lower shell 4 respectively. Preferably, rotor shaft 6 is the metal material, and its one end is provided with anti-skidding structure, for example the annular knurl, just rotor shaft 6 is provided with the one end of anti-skidding structure adopt the mode that the inserts were moulded plastics with inferior valve 4 fixed connection, the last anti-skidding structure of rotor shaft 6 then can with form spacingly between inferior valve 4, and then prevent rotor shaft 6 is in the holding intracavity takes place to rotate. The other end of the rotor shaft 6 is preferably a smooth end, a shaft groove is formed in a position corresponding to the upper shell 3, and when the upper shell 3 is clamped on the lower shell 4, the smooth end of the rotor shaft 6 is inserted into the shaft groove.

The rotor member 1 of the noise reduction rotor assembly is at least partially located in the accommodating cavity, and the rotor member 1 is in transmission fit with the output shaft 7, preferably in gear fit. I.e. the output shaft 7 is designed with a gear structure, which is defined as the second gear structure 72. The first gear structure 121 on the shaft portion 12 of the rotor member 1 is in transmission connection with the second gear structure 72 through a gear set, so that when the stator member 5 is powered on and drives the rotor member 1 to rotate, the output shaft 7 is driven to rotate. And two ends of the output shaft 7 respectively face the upper casing 3 and the lower casing 4, and the upper casing 3 and/or the lower casing 4 are respectively provided with through openings 9 at positions corresponding to the output shaft 7 so that an external device can be connected with the output shaft 7.

(1) According to the noise reduction rotor assembly, the insert is embedded in the rotor part, and the copper-based powder metallurgy part is preferably adopted, so that when the rotor shaft is sleeved with the insert, the insert is matched with the rotor shaft, compared with the original rotor part, an inner hole is directly matched with the rotor shaft, the precision is higher, the wear resistance is higher, the assembling precision between the rotor part and the rotor shaft can be ensured, the matching clearance is reduced, and the noise reduction effect is realized;

(3) According to the noise reduction rotor assembly, the counter bore is formed in one end of the rotor part, so that the rotor part can be better adapted to a structure on a shell of an automobile actuator when being assembled, the internal structure of the automobile actuator is more compact, and the miniaturization design of a product is facilitated;

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a rotor subassembly of making an uproar falls, its characterized in that, it includes rotor spare (1) and inserts (2), the axis position of rotor spare (1) is provided with hole (11), hole (11) run through rotor spare (1) is at two terminal surfaces of axis direction, inserts (2) set up in hole (11), be provided with shaft hole (21) in inserts (2), shaft hole (21) with hole (11) coaxial setting, shaft hole (21) run through inserts (2) are at two terminal surfaces of axis direction, the internal diameter in shaft hole (21) is less than the internal diameter of hole (11), inserts (2) with be provided with limit structure between rotor spare (1).

2. The noise reducing rotor assembly according to claim 1, wherein the insert (2) is a copper-based powder metallurgy.

3. The noise reducing rotor assembly according to claim 1, wherein the insert (2) has an insert main body portion (22) and an insert limiting portion (23) along an axial direction, an outer diameter of the insert limiting portion (23) is larger than an outer diameter of the insert main body portion (22), and a plurality of limiting grooves (231) are provided on the insert limiting portion (23).

4. The noise reducing rotor assembly according to claim 1, wherein the rotor member (1) comprises a shaft portion (12) and a driving portion (13) in order along an axial direction, an outer diameter of the driving portion (13) is larger than an outer diameter of the shaft portion (12), and a gear structure is provided on the shaft portion (12).

5. The noise reducing rotor assembly according to claim 4, wherein a side of the driving portion (13) remote from the shaft portion (12) is provided with a counterbore (14), the counterbore (14) communicating with the internal bore (11).

6. An automobile actuator is characterized by comprising an upper shell (3), a lower shell (4), a stator part (5), a rotor shaft (6), an output shaft (7), a circuit board (8) and a noise reduction rotor assembly according to any one of claims 1 to 5, wherein the upper shell (3) is clamped on the lower shell (4), a containing cavity is formed between the upper shell (3) and the lower shell (4), the stator part (5), the rotor shaft (6), the output shaft (7), the circuit board (8) and the noise reduction rotor assembly are respectively arranged in the containing cavity, the stator part (5) is provided with the containing cavity, the noise reduction rotor assembly is sleeved on the rotor shaft (6) through an insert (2), two ends of the rotor shaft (6) are respectively connected with the upper shell (3) and the lower shell (4), at least part of the rotor part (1) of the noise reduction rotor assembly is positioned in the containing cavity, the stator part (5) is connected with the circuit board (8), the rotor part (1) is in transmission fit with the output shaft (7), and the noise reduction rotor part (5) drives the output shaft (7) to rotate after being electrified.

7. The vehicle actuator according to claim 6, wherein the rotor member (1) and the output shaft (7) are geared.

8. The vehicle actuator according to claim 6, wherein both ends of the output shaft (7) face the upper case (3) and the lower case (4), respectively, and the upper case (3) and/or the lower case (4) are provided with through openings (9) at positions corresponding to the output shaft (7), respectively.

9. The motor vehicle actuator according to claim 6, characterized in that the stator part (5) is fixedly connected to the lower housing (4), and the circuit board (8) is located between the stator part (5) and the upper housing (3).

10. The vehicle actuator according to claim 6, wherein one end of the rotor shaft (6) is provided with an anti-slip structure.