Variable-frequency and variable-speed motor

Abstract

A variable-frequency and variable-speed motor relates to the technical field of motors, and can effectively reduce the production cost of the motor, enhance the overall sealing performance of the motor, greatly reduce the mechanical loss of the motor and improve the efficiency of the motor. In the variable-frequency and variable-speed motor, a bearing is mounted on a motor shaft in a pressing manner, a wave spring is arranged on the outer side of the bearing, and a bearing inner cover is assembled on the motor shaft; the bearing is provided with a rear end cover in a pressing mode, the rear end cover is connected with the bearing inner cover, and meanwhile the rear end cover is connected with a bearing outer cover. The bearing outer cover is of a blank cap structure, the blank cap structure is of a structure without a through hole, and meanwhile an oil seal is omitted.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field especially, relates to a variable frequency speed regulation motor, and particularly to a high sealing, low loss variable frequency speed regulation motor. BACKGROUND

[0002] Today's motor market develops rapidly, and various motor factories have various product types, the variable frequency speed regulation motor has the characteristics such as low noise, small vibration, large starting torque, small starting current, stable operation and wide application range, and is still widely applied in various industries.

[0003] At present, the medium and large variable frequency speed regulation motor on the market generally adopts grease lubrication mode, and the motor form is generally single and similar, for example, in the design of the rear end sealing of medium and large motors, various parties generally adopt the sealing mode that the motor shaft penetrates the bearing inner cover, bearing and bearing outer cover in turn and then extends out, and an oil seal groove is processed on the bearing outer cover to install an oil seal.

[0004] However, the present application inventors found that the prior art mainly has the following defects:

[0005] (1) the sealing property of the motor is low, which leads to the shortening of the service life of the motor, and the large procurement and production cost;

[0006] (2) the installation of the oil seal will inevitably increase the mechanical friction of the motor, thereby increasing the mechanical loss, and further increasing the temperature rise of the motor and reducing the efficiency of the motor. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at providing a variable frequency speed regulation motor, which can effectively reduce the production cost of the motor while enhancing the overall sealing property of the motor, greatly reducing the mechanical loss of the motor and improving the efficiency of the motor.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0009] A variable frequency speed regulation motor, comprising: a motor shaft, the motor shaft is press-fitted with a bearing, the outer side of the bearing is provided with a wave spring, and the motor shaft is assembled with a bearing inner cover; the bearing is press-fitted with a rear end cover, and the rear end cover is connected with the bearing inner cover, and the rear end cover is connected with a bearing outer cover;

[0010] The bearing outer cover adopts a cover structure, and the cover structure is a structure without through holes, and the oil seal is cancelled.

[0011] In actual application, the bolt passes through the elastic pad, the flat pad, the bearing outer cover and the rear end cover in turn and is locked into the threaded hole of the bearing inner cover.

[0012] The rear end cover is provided with an axial flow fan.

[0013] Specifically, the rear end cover and the bearing inner cover are connected by a stopper connection.

[0014] The rear end cover and the bearing outer cover are connected by a stopper connection.

[0015] Compared with the prior art, the variable frequency speed regulation motor has the following advantages:

[0016] In the variable frequency speed regulation motor, the bearing outer cover at the rear end is designed as a cover structure to replace the traditional rear end through type structure of a medium and large motor, thereby on the one hand, the process of machining an oil seal groove for the bearing outer cover is effectively reduced, and the use of an oil seal material is reduced, thereby the production cost of the motor is effectively reduced, on the other hand, the sealing performance of the motor is effectively improved, and the service life of the motor is greatly prolonged; in addition, the cancellation of the oil seal can effectively reduce the mechanical friction on the shaft, thereby reducing the mechanical loss of the motor, and thereby the temperature rise of the motor is reduced, and the efficiency of the motor is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structural schematic view of the variable frequency speed regulation motor is provided for the embodiment of the utility model.

[0018] Figure 2 A structural schematic view of the bearing outer cover in the variable frequency speed regulation motor is provided for the embodiment of the utility model.

[0019] REFERENCE NUMERALS:

[0020] 1-motor shaft; 2-bearing inner cover; 3-rear end cover; 4-bearing; 5-wave spring; 6-bearing outer cover; 7-flat pad; 8-spring pad; 9-bolt; 10-axial flow fan. DETAILED DESCRIPTION

[0021] In order to facilitate understanding, the variable frequency speed regulation motor provided by the embodiment of the utility model is described in detail below in combination with the drawings of the specification.

[0022] The embodiment of the utility model provides a variable frequency speed regulation motor, such as Figure 1 and Figure 2 As shown, comprising: motor shaft 1, motor shaft 1 is pressed and mounted with bearing 4, the outer side of bearing 4 is provided with wave spring 5, and motor shaft 1 is equipped with bearing inner cover 2;Bearing 4 is pressed and mounted with rear end cover 3, and rear end cover 3 is connected with bearing inner cover 2, and at the same time, rear end cover 3 is connected with bearing outer cover 6;

[0023] The bearing outer cover 6 adopts a cover structure, and the cover structure is a structure without through holes, and the oil seal is cancelled.

[0024] Compared with the prior art, the variable frequency speed regulation motor provided by the embodiment of the utility model has the following advantages:

[0025] The utility model embodiment provides a variable frequency speed regulation motor, bearing outer cover 6 of rear end is designed as the form of the cover to replace the traditional rear end through type structure of medium and large motor, thereby on one hand effectively reduce the process procedure that bearing outer cover 6 needs to process oil seal groove, reduce the use of an oil seal material simultaneously, further effectively reduce the production cost of motor, on the other hand effectively improve the whole machine sealing of motor, and greatly prolong the service life of motor, in addition, cancel the oil seal can effectively reduce the mechanical friction on the shaft, thereby reduce the whole machine mechanical loss, further make motor temperature rise reduce, simultaneously make motor efficiency rise.

[0026] In practical application, as shown in Figure 1 and Figure 2 Bolt 9 can pass through elastic pad 8, flat pad 7, bearing outer cover 6, rear end cover 3 in turn and be locked into the threaded hole of bearing inner cover 2, thereby realizing the whole machine assembly of variable frequency speed regulation motor well.

[0027] As shown in Figure 1 and Figure 2 The rear end cover 3 can be installed with an axial flow fan 10.

[0028] Axial flow fan, purpose is very extensive, just air flow direction and the shaft of the blade are in the same direction of a kind of fan, such as electric fan, air conditioner outdoor unit fan is axial flow mode operation fan, it is called "axial flow type" because gas flows parallel to the fan shaft, axial flow fan is usually used in the occasion of higher flow requirement and lower pressure requirement, axial flow fan is fixed in position and makes air move.

[0029] Specifically, as shown in Figure 1 and Figure 2 The rear end cover 3 and the bearing inner cover 2 can adopt a stop opening connection, and the rear end cover 3 and the bearing outer cover 6 can also be connected through a stop opening.

[0030] One of the main functions of the stop opening design is to prevent misplacement or gap during shell assembly, through the design of the stop opening, the deformation of A shell towards the outside can be effectively prevented, and the B shell towards the inside can also be prevented, thereby ensuring the stability and reliability of the product, and the limiting effect is crucial for ensuring the appearance and function of the product, at the same time, the stop opening is also called an electrostatic wall, which can block static electricity from entering from the outside, thereby protecting the internal electronic components, when designing, the complete stop opening is retained as much as possible to effectively prevent the damage of static electricity to the internal components, and improve the safety and reliability of the product.

[0031] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A variable frequency drive motor, characterized by, The utility model relates to a motor bearing structure, including: Motor shaft, bearing is pressed and is equipped with the motor shaft, the outside of bearing is provided with wave spring, and the motor shaft is equipped with bearing inner cover, bearing is pressed and is equipped with rear end cover, and the rear end cover is connected with bearing inner cover, simultaneously the rear end cover is connected with bearing outer cover, Bearing outer cover adopts the structure of stifling cover structure, and the stifling cover structure is the structure without through -hole, simultaneously cancels oil seal.

2. The variable frequency drive motor of claim 1, wherein, Bolt passes through elastic pad, flat pad, bearing outer cover, rear end cover locking to the threaded hole of bearing inner cover in proper order.

3. The variable frequency drive motor of claim 2, wherein, The rear end cover is installed with axial flow fan.

4. The variable frequency speed-adjustable motor according to any one of claims 1-3, characterized in that, The rear end cover is connected with the bearing inner cover and adopts the stop opening connection. The rear end cover is connected with the bearing outer cover through the stop opening.

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