External rotor motor for balancing engine

Abstract

The utility model discloses an external rotor motor for balancing an engine, which comprises a plurality of groups of external rotor motor assemblies and a shell assembly, the external rotor motor assemblies are distributed according to a phase relation and are rotatably erected in the shell assembly, and the shell assembly is fixedly connected with the engine; a controller which is in signal connection with the outer rotor motor assembly and used for receiving engine data and controlling the rotating speed of an outer rotor motor is arranged on the shell assembly, the outer rotor motor assembly comprises a motor outer rotor and a motor stator, and the motor stator is fixed in the shell assembly and electrified to generate a magnetic field. The motor outer rotor comprises an outer rotor shell with the outer wall of an eccentric unbalanced structure and a permanent magnet, and the outer rotor shell is driven to rotate in the shell assembly through cooperation of the permanent magnet and a magnetic field so as to generate centrifugal force counteracting reciprocating inertia force of an engine piston. The utility model has a compact structure, does not need a complex gear set mechanism, does not need to correspond to a corresponding phase angle during assembly, and can balance the reciprocating inertia force of the piston more intelligently by using the controller for control.

Description

Technical Field

[0001] The utility model relates to an outer rotor motor for engine balancing, belonging to the technical field of automobile engines. Background Art

[0002] With technological advancements, people's demands for greater functionality and comfort in their vehicles are increasing. The engines of traditional fuel-powered vehicles produce significant vibration and noise during operation, creating a negative experience for both the surrounding environment and the driver and passengers. Engine vibration and noise are primarily caused by the reciprocating inertia of the pistons. Currently, most household fuel-powered vehicles are equipped with four-cylinder engines. These engines can effectively offset first-order reciprocating inertia by adjusting the piston phase. Second-order reciprocating inertia is the primary cause of engine noise and vibration.

[0003] An existing Chinese patent, published with publication number CN205260134U, proposes a "second-order reciprocating inertia force balancing mechanism for gasoline engines." The mechanism includes a timing chain, a drive sprocket, a crankshaft sprocket, and balance shaft sprockets I and II, all located on the side of the engine. Key technical features include: the drive sprocket, balance shaft sprocket II, and crankshaft sprocket are connected by a timing chain to form a triangular structure. A tensioner is positioned within the triangular structure. A vibration damper is provided on the timing chain between the drive sprocket and balance shaft sprocket II. Balance shaft sprocket I is located at the bottom of the timing chain between the drive sprocket and crankshaft sprocket, meshing with the drive sprocket. This mechanism fundamentally reduces the vibration amplitude of the second-order reciprocating inertia force and gasoline engine noise, thereby improving engine performance.

[0004] The above-mentioned balancing mechanism requires a complex gear set mechanism, occupies a large space, and requires corresponding phase angles during assembly. The operation is cumbersome and the degree of intelligence is not high. Therefore, there is an urgent need for an outer rotor motor with a compact structure that does not require a complex gear set mechanism and does not require corresponding phase angles during assembly. At the same time, a controller is used to control the reciprocating inertia force more intelligently, which is specially used to balance the vibration of the engine, so as to effectively offset the second-order reciprocating inertia torque and improve the vibration and noise of the engine. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the existing automobile engine balancing mechanism has complex structure, cumbersome installation and low intelligence level.

[0006] In order to solve the above technical problems, the utility model provides an outer rotor motor for engine balancing, which has a compact structure, does not require a complex gear set mechanism, and does not require corresponding phase angles during assembly. At the same time, the use of a controller can more intelligently balance the reciprocating inertia force of the piston.

[0007] To achieve the above technical objectives and effects, this application is implemented through the following technical solutions:

[0008] An outer rotor motor for engine balancing includes an outer rotor motor assembly and a housing assembly. The outer rotor motor assemblies are provided in multiple groups and are all rotatably mounted in the housing assembly. The housing assembly is used to connect to the engine and transmit the centrifugal force of the outer rotor motor assembly to the engine.

[0009] It also includes a controller, which is arranged on the housing assembly and is connected to the outer rotor motor assembly signal, and is used to receive engine data and control the speed of the outer rotor motor.

[0010] Preferably, the multiple groups of outer rotor motors are distributed according to phase relationship.

[0011] Preferably, the outer rotor motor assembly includes an outer rotor and a stator, the stator is fixed in the housing assembly, and the outer rotor is driven to rotate by the stator to generate centrifugal force to offset the reciprocating inertia force of the engine piston.

[0012] Furthermore, the motor stator includes a rotating shaft and a coil, the rotating shaft is fixed on the housing assembly, the coil winding is fixedly wound on the rotating shaft and electrically connected to an external power supply to realize power supply and generate a magnetic field.

[0013] Furthermore, the outer rotor of the motor includes an outer rotor shell and a permanent magnet. The permanent magnet is arranged in the outer rotor shell. The outer rotor shell is coaxially arranged with the rotating shaft. The outer wall of the outer rotor shell is arranged as an eccentric unbalanced structure.

[0014] Furthermore, the outer walls at both ends of the rotating shaft are provided with limiting planes, and the housing component is provided with mounting grooves adapted to the limiting planes.

[0015] Furthermore, a plurality of bearings are provided between the outer rotor of the motor and the rotating shaft.

[0016] Furthermore, the housing assembly includes an upper housing and a lower housing, and the upper housing and the lower housing are detachably connected and are both connected to the engine cylinder block.

[0017] The utility model provides an outer rotor motor for engine balancing, which has the following advantages:

[0018] 1. When the utility model is used, the controller receives engine data and controls the outer rotor motor assembly to rotate in the housing assembly. During rotation, the motor stator is energized to generate a magnetic field, thereby driving the outer rotor of the motor to rotate. The outer rotor of the motor with an eccentric and unbalanced structure generates centrifugal force during rotation. The centrifugal force is transmitted to the engine through the housing assembly to offset the reciprocating inertia force of the engine piston, thereby improving the vibration and noise of the engine. At the same time, there is no need for a complicated gear structure, the structure is simple, and the installation is convenient and quick.

[0019] 2. When the utility model is used, the reciprocating inertia force of the piston can be balanced more intelligently through the control of the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the phase diagram of the second-order reciprocating inertia force of a four-cylinder engine;

[0021] Figure 2 This is a schematic structural diagram of an outer rotor motor for engine balancing according to the present invention;

[0022] In the picture:

[0023] 1-outer rotor motor assembly; 11-motor outer rotor; 111-outer rotor housing; 112-permanent magnet; 12-motor stator; 121-rotating shaft; 122-coil; 2-housing assembly; 21-upper housing; 22-lower housing; 3-bearing; 4-limiting plane; 5-mounting slot; 51-mounting slot 1; 52-mounting slot 2; 6-controller. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this utility model, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts are within the scope of protection of this utility model.

[0025] Reference Figure 1 and Figure 2 An outer rotor motor for engine balancing includes an outer rotor motor assembly 1 and a housing assembly 2. The outer rotor motor assembly 1 is installed with multiple groups and all of them are rotated according to a phase relationship and mounted in the housing assembly 2. The housing assembly 2 is used to connect to the engine and transmit the centrifugal force of the outer rotor motor assembly 1 to the engine to offset the reciprocating inertia force of the engine piston, thereby improving the vibration and noise of the engine.

[0026] In a further embodiment, the outer rotor motor assembly 1 includes a motor outer rotor 11 and a motor stator 12. The motor stator 12 is fixed in the housing assembly 2. The motor outer rotor 11 is driven by the motor stator 12 to rotate in the housing assembly 2 to generate centrifugal force to offset the reciprocating inertia force of the engine piston.

[0027] The motor stator 12 includes a rotating shaft 121 and a coil 122. The rotating shaft 121 is fixedly mounted on the housing assembly 2. The coil 122 winding is fixedly wound on the rotating shaft 121 and is electrically connected to an external power supply to enable power to be supplied to generate a magnetic field. The motor outer rotor 11 includes an outer rotor housing 111 and a permanent magnet 112. The permanent magnet 112 is embedded in the outer rotor housing 111 to cooperate with the magnetic field generated by the motor stator 12 to realize the rotation of the outer rotor housing 111. The outer rotor housing 111 is coaxially installed with the rotating shaft 121. A bearing 3 is installed at each end of the outer rotor housing 111. The outer ring of the bearing 3 is matched with the inner circle of the outer rotor housing 111, and the inner ring of the bearing 3 is matched with the rotating shaft 121 of the motor stator 12. The bearing 3 is used to support the rotation of the outer rotor housing 111, reduce friction, and improve the overall life of the outer rotor motor assembly 1. The outer wall of the outer rotor housing 111 is integrally injection-molded into an eccentric unbalanced structure to generate centrifugal force during rotation.

[0028] Reference Figure 1 In a further embodiment, the housing assembly 2 includes an upper housing 21 and a lower housing 22, the upper housing 21 and the lower housing 22 are fixed by bolts, and the upper housing 21 and the lower housing 22 are both connected to the engine cylinder block by bolts, and the limiting planes 4 are symmetrically opened on the outer walls at both ends of the rotating shaft 121, and a mounting groove 5-1 for mounting the rotating shaft 121 and adapted to one side of the limiting plane 4 is opened on the upper housing 21 or the lower housing 22, and a mounting groove 5-2 for mounting the rotating shaft 121 is opened on the lower housing 22 or the upper housing 21, which is different from the side of the limiting plane 4. The mounting groove 5-1 and the mounting groove 5-2 constitute a mounting groove 5 for fixing the rotating shaft 121.

[0029] Reference Figure 1 and Figure 2 , an outer rotor motor for engine balancing, also includes a controller 6. The signal connection between the controller 6 and the outer rotor motor assembly 1 is a prior art and will not be described in detail. The controller 6 is installed on the side wall of the upper shell or the lower shell to receive and read the phase position of the engine rotation and the rotation speed of the crankshaft, and input the relevant signals to the outer rotor motor assembly 1, so that the motor outer rotor 11 rotates and the motor outer rotor 11 generates centrifugal force to offset the reciprocating inertia force. The two motors must have a corresponding phase relationship when rotating.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form or substance. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be considered as the scope of protection of the present invention. Any technician familiar with this profession can make some changes, modifications and equivalent changes made by using the technical content disclosed above without departing from the spirit and scope of the present invention, which are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An outer rotor motor for engine balancing, characterized in that: The invention comprises an outer rotor motor assembly (1) and a housing assembly (2), wherein the outer rotor motor assembly (1) is provided with a plurality of groups and all of the groups are rotatably mounted in the housing assembly (2), and the housing assembly (2) is used to connect to an engine and transmit the centrifugal force of the outer rotor motor assembly (1) to the engine; It also includes a controller (6), which is arranged on the housing assembly (2) and is connected to the outer rotor motor assembly (1) for signal reception and control of the outer rotor motor speed.

2. The outer rotor motor for engine balancing according to claim 1, characterized in that: The plurality of groups of outer rotor motors are distributed according to a phase relationship.

3. The outer rotor motor for engine balancing according to claim 1, characterized in that: The outer rotor motor assembly (1) comprises an outer rotor (11) and a stator (12), wherein the stator (12) is fixed in the housing assembly (2), and the outer rotor (11) is driven to rotate by the stator (12) and is arranged in the housing assembly (2) to generate a centrifugal force to offset the reciprocating inertia force of the engine piston.

4. The outer rotor motor for engine balancing according to claim 3, characterized in that: The motor stator (12) comprises a rotating shaft (121) and a coil (122), wherein the rotating shaft (121) is fixed on the housing assembly (2), and the coil (122) is fixedly wound on the rotating shaft (121) and electrically connected to an external power source to achieve power supply and generate a magnetic field.

5. The outer rotor motor for engine balancing according to claim 4, characterized in that: The motor outer rotor (11) comprises an outer rotor housing (111) and a permanent magnet (112). The permanent magnet (112) is arranged in the outer rotor housing (111). The outer rotor housing (111) and the rotating shaft (121) are coaxially arranged. The outer wall of the outer rotor housing (111) is arranged to have an eccentric unbalanced structure.

6. The outer rotor motor for engine balancing according to claim 4, characterized in that: Limiting planes (4) are provided on the outer walls at both ends of the rotating shaft (121), and mounting grooves (5) adapted to the limiting planes (4) are provided on the housing component (2).

7. The outer rotor motor for engine balancing according to claim 4, characterized in that: A plurality of bearings (3) are provided between the motor outer rotor (11) and the rotating shaft (121).

8. The outer rotor motor for engine balancing according to claim 2, characterized in that: The housing assembly (2) comprises an upper housing (21) and a lower housing (22); the upper housing (21) and the lower housing (22) are detachably connected and are both connected to the engine cylinder block.

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