Rotor and motor including the same

Abstract

The present invention relates to a rotor and a motor including the same, wherein the rotor is characterized by comprising a rotor sleeve having a rotational center axis of the rotor and a support member connected to the rotor sleeve and integrally formed with the rotor sleeve.

Description

Technology Field

[0001] The present invention relates to a vehicle rotor and a motor including the same, and more specifically, to a vehicle rotor and a motor including the same in which a rotor sleeve connected to a rotor used in a HEV (Hybrid Electric Vehicle) and a support member supporting the rotor sleeve are integrally manufactured to reduce material costs. Background Technology

[0003] A motor includes a rotor and a stator. An electromagnetic force is generated between the coils of the stator and the magnets of the rotor, and power is transmitted as the rotor rotates outward from the stator.

[0004] Generally, Hybrid Electric Vehicles (HEVs) are equipped with both an engine and a motor. Depending on driving conditions, the vehicle switches between an Electric Vehicle (EV) mode, where only the motor is driven, and an HEV mode, where the engine and motor are selectively driven as needed, thereby improving fuel efficiency.

[0005] This TMED (Transmission Mounted Electric Device) method is a method in which an electric motor is equipped in the automatic transmission.

[0006] Power transmission in an HEV transmission begins with the engine. Engine power is transmitted to the transmission through the rotor and the engine clutch.

[0007] When switching from EV mode to HEV mode, there is a problem in that engine torque changes, causing vibration in the engine clutch and potentially generating noise due to shaking.

[0008] In addition, conventionally, the rotor sleeve and the engine clutch support are manufactured using separate methods, followed by a welding process. However, this process had the disadvantage of reduced cleanliness due to the spatter generated, as well as increased manufacturing costs and time.

[0009] The background technology of the present invention is disclosed in Korean Registered Patent Publication No. 10-2631217 B1 (registered on January 25, 2024, title of invention: Hybrid Driving Module). The problem to be solved

[0011] The present invention was created to improve upon the aforementioned problems, and the objective of the present invention is to reduce material costs and improve workability by manufacturing the rotor sleeve and the supporting member therein as a single unit. means of solving the problem

[0013] A rotor according to the present invention is characterized by comprising: a rotor sleeve having a rotational center axis of the rotor, and a support member connected to the rotor sleeve and integrally formed with the rotor sleeve.

[0014] In the present invention, the rotor sleeve and the support can be manufactured by flow forming.

[0015] In the present invention, the support member is connected to a hydraulic hole located inside a hydraulic cylinder and can support the operation of the piston.

[0016] The motor according to the present invention may include a rotor as described above.

[0017] In the present invention, the motor may further include a stator disposed on the outer side of the rotor. Effects of the invention

[0019] The rotor according to the present invention and the motor including the same can prevent noise and vibration occurring at the connection point by eliminating the connection process between the two parts due to the integral formation of the rotor sleeve and the support member.

[0020] The rotor according to the present invention and the motor including the same can reduce the number of parts and reduce manufacturing time by integrating the rotor sleeve and the support into a single part.

[0021] The rotor according to the present invention and the motor including the same can reduce material costs by integrating the rotor sleeve and the support into a single part.

[0022] The rotor according to the present invention and the motor including the same can simplify the process by manufacturing the rotor sleeve and the support using the same method.

[0023] The rotor according to the present invention and the motor including the same can prevent spatter defects by manufacturing the rotor sleeve and the support using the same method.

[0024] The rotor according to the present invention and the motor including the same can increase cleanliness during the process. Brief explanation of the drawing

[0026] FIG. 1 is a side cross-sectional view schematically showing a rotor as a prior art. FIG. 2 is a side cross-sectional view schematically showing the configuration of a rotor according to one embodiment of the present invention. FIG. 3 is a side cross-sectional view schematically showing the configuration of a rotor and a stator according to one embodiment of the present invention. Specific details for implementing the invention

[0027] Hereinafter, an embodiment of a rotor according to the present invention and a motor including the same will be described with reference to the contents described in the attached drawings. However, the present invention is not limited or restricted by exemplary embodiments and can be modified in various forms.

[0028] In this process, the thickness of lines or the size of components depicted in the drawings may be exaggerated for convenience. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intentions or conventions of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0029] Furthermore, in this specification, when a part is described as being “connected (or joined)” to another part, this includes not only cases where they are “directly connected (or joined)” but also cases where they are “indirectly connected (or joined)” with other members interposed between them. In this specification, when a part is described as “comprising (or having) a certain component,” this means that, unless specifically stated otherwise, it does not exclude other components but may additionally “comprising (or having)” other components.

[0030] The purpose and effects of the present invention may be naturally understood or become clearer through the following description, and the purpose and effects of the present invention are not limited solely to the description below. Furthermore, in describing the present invention, if it is determined that a description of known technology related to the present invention may unnecessarily obscure the essence of the invention, such detailed description will be omitted.

[0031] The present invention relates to a rotor and a motor including the same, specifically to a hybrid electric vehicle (hereinafter HEV) in which a TMED (Transmission Mounted Electric Device) method is used.

[0032] Generally, hybrid vehicles have a structure in which a motor is located between the engine and the transmission, and an engine clutch is located between the engine and the motor.

[0033] Power is transmitted from the motor to the input shaft of the transmission so that the rotation axis of the stator located at the outermost edge and the rotor located inside relative to the stator can engage with the engine clutch.

[0034] The engine clutch serves to transmit the rotational motion of a car engine to the transmission. Since the engine continues to rotate and transmit this motion to the transmission even when the vehicle is stationary, the engine clutch is used to control this movement.

[0035] Conventionally, the rotor sleeve constituting the rotor and the support member, which is one of the components of the engine clutch, were joined by welding.

[0036] When the rotor sleeve and the support are connected by welding as in the past, there was a problem in that spatter was generated during the welding process, resulting in reduced cleanliness.

[0037] In addition, there is the inconvenience of having to invest in welding facilities, and production time increases significantly, leading to problems such as reduced efficiency in terms of workability.

[0038] Accordingly, the present invention provides a rotor and a motor including the same that solve the above-mentioned problems by applying a method of integrally forming a rotor sleeve and a support member that supports the same.

[0039] FIG. 1 is a side cross-sectional view schematically showing a rotor (1) as a prior art.

[0040] Referring to FIG. 1, the rotor sleeve (100) and the support member (200) are each manufactured and combined.

[0041] In conventional technology, the manufacturing method of the rotor sleeve (100) and the support member (200) is different.

[0042] Specifically, the rotor sleeve (100) is manufactured by a flow forming method, and the support part (200) is manufactured by a general forging method.

[0043] Forging is a technique that processes all sides of a forged material.

[0044] FIG. 2 is a side cross-sectional view schematically showing the configuration of a rotor (1) according to one embodiment of the present invention.

[0045] A rotor (1) according to one embodiment of the present invention includes a rotor sleeve (100) having a rotational center axis of the rotor (1), and a support member (200) connected to the rotor sleeve (100) and integrally formed with the rotor sleeve (100).

[0046] Specifically, a rotational center axis is provided on the inner side of the rotor sleeve (100), and the rotor sleeve (100) protects the rotating axis from the outside and reduces vibration between rotating parts.

[0047] The support member (200) is one of the parts that support the rotor sleeve (100), specifically a part that constitutes an engine clutch (not shown). In one embodiment, the support member (200) may be an inner boss.

[0048] The engine clutch parts are assembled into the inner diameter of the rotor sleeve (100) connected to the rotor.

[0049] A support member (200) of a rotor (1) according to one embodiment of the present invention is connected to a hydraulic hole located inside a hydraulic cylinder (not shown) and supports the operation of a piston.

[0050] Referring to FIG. 2, the rotor sleeve (100) and the support member (200) are provided integrally.

[0051] Specifically, the rotor sleeve (100) and the support member (200) are manufactured by a flow forming method.

[0052] Flow forming is a method that utilizes both casting and forging techniques. It involves pressing a cast wheel into a rapidly rotating barrel and then shaping the barrel with steel rollers, offering the advantage of superior fuel efficiency and durability.

[0053] In the past, only the rotor sleeve (100) was manufactured using the flow forming method, whereas in one embodiment of the present invention, the rotor (1) and the motor including it can have both the rotor sleeve (100) and the support member (200) manufactured integrally using the flow forming method.

[0054] FIG. 3 is a side cross-sectional view schematically showing the configuration of a rotor and a stator according to one embodiment of the present invention.

[0055] Referring to FIG. 3, a motor according to one embodiment of the present invention may further include a stator (300) disposed on the outside of a rotor (1).

[0056] The rotor according to the present invention can prevent noise and vibration occurring at the connection point by eliminating the connection process between the two parts due to the integral formation of the rotor sleeve and the support member.

[0057] The rotor according to the present invention integrates the rotor sleeve and the support into a single part, thereby reducing the number of parts and saving manufacturing time.

[0058] The rotor according to the present invention can reduce material costs by integrating the rotor sleeve and the support into a single component.

[0059] The rotor according to the present invention can simplify the process by manufacturing the rotor sleeve and the support using the same method.

[0060] The rotor according to the present invention can prevent spatter defects by manufacturing the rotor sleeve and the support using the same method.

[0061] The rotor according to the present invention can increase cleanliness during the process.

[0062] In addition, the motor of the present invention can have the same effect as the rotor of the present invention.

[0063] Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely illustrative and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the claims below. Explanation of the symbols

[0065] 1 : Rotor 100 : Rotor Sleeve 200 : Support 300 : Status

Claims

Claim 1 A rotor characterized by comprising: a rotor sleeve having a rotational center axis of the rotor; and a support member provided in an engine clutch, connected to a hydraulic hole located inside a hydraulic cylinder, supporting the operation of a piston, connected to the rotor sleeve, and integrally provided with the rotor sleeve. Claim 2 A rotor according to claim 1, characterized in that the rotor sleeve and the support are manufactured by flow forming. Claim 3 A motor comprising the rotor of claim 1. Claim 4 A motor characterized by further including a stator disposed on the outer side of the rotor in claim 3.

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