Motor structure with gear boxes at two ends

Abstract

The utility model provides a motor structure with gear boxes at two ends, which comprises a motor shell, a first end cover, a second end cover, a first bearing, a second bearing, a rotary driving assembly and a rotary shaft, the first end cover is fixed at the front end of the motor shell, the first bearing is fixed in the middle of the first end cover, and the second end cover is fixed at the rear end of the motor shell. The second bearing is fixed in the middle of the second end cover, the rotary driving assembly is installed in the motor shell, the rotary shaft is connected with the power output end of the rotary driving assembly, and the front end and the rear end of the rotary shaft penetrate through the first end cover and the second end cover respectively and are rotatably installed on the first bearing and the second bearing respectively. The motor has the advantages that the cost and the size of the motor can be greatly reduced, miniaturization design of products is facilitated, and the ground brushes on the two sides of the dust collector can operate synchronously.

Description

Technical Field

[0001] The utility model relates to the technical field of micro motors, in particular to a motor structure with gear boxes installed at both ends. Background Art

[0002] Micro motors are widely used in various household appliances, including vacuum cleaners. Some vacuum cleaners have floor brushes installed on both sides. Traditional vacuum cleaners use two independent motors with planetary gearboxes to drive the floor brush pulleys on both sides of the vacuum cleaner, thereby rotating the floor brushes on both sides. However, its drive structure is relatively bloated and the assembly space is greatly limited. It cannot meet the needs of the gradual miniaturization of product design, and it is difficult to ensure the synchronous operation of the floor brushes on both sides. Therefore, it is necessary to produce a motor structure with gearboxes at both ends to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a motor structure with gear boxes installed at both ends to solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0005] A motor structure with gearboxes at both ends includes a motor housing, a first end cover, a second end cover, a first bearing, a second bearing, a rotary drive assembly and a rotary shaft. The first end cover is fixed to the front end of the motor housing, the first bearing is fixed to the middle part of the first end cover, the second end cover is fixed to the rear end of the motor housing, the second bearing is fixed to the middle part of the second end cover, the rotary drive assembly is installed in the motor housing, the rotary shaft is connected to the power output end of the rotary drive assembly, the front and rear ends of the rotary shaft pass through the first end cover and the second end cover respectively, and the front and rear ends of the rotary shaft are rotatably mounted on the first bearing and the second bearing respectively.

[0006] Further description of the utility model: A first circular groove is provided in the middle of the front end of the first end cover, and a second circular groove is provided in the middle of the rear end of the second end cover. The front and rear ends of the rotating shaft correspond to the first circular groove and the second circular groove respectively.

[0007] Further description of the utility model: The front end of the first end cover is provided with multiple groups of first arcuate grooves, and the multiple groups of first arcuate grooves are evenly distributed on the outer circumference of the first circular groove; the rear end of the second end cover is provided with multiple groups of second arcuate grooves, and the multiple groups of second arcuate grooves are evenly distributed on the outer circumference of the second circular groove.

[0008] Further description of the present invention: three groups of positioning grooves are evenly arranged on the peripheral edge of the first end cover, and three groups of positioning holes are evenly arranged on the peripheral edge of the second end cover. The positions of the three groups of positioning grooves and the three groups of positioning holes are staggered with each other.

[0009] Further description of the utility model: The rotary drive assembly includes a stator, a rotor, a commutator and a carbon brush assembly. The stator is fixed to the inner wall of the motor housing, the rotor and the commutator are fixed on the rotating shaft, the winding on the rotor is connected to the commutator, the carbon brush assembly is fixed in the motor housing and corresponds to the rear side of the first end cover, and the carbon brushes on the carbon brush assembly are in contact with the commutator.

[0010] Further description of the utility model: A first connecting plane is provided on one side of the front end of the rotating shaft, and a second connecting plane is provided on one side of the rear end of the rotating shaft.

[0011] Further description of the utility model: It also includes a first gear box and a second gear box, the first gear box is fixed on the front side of the first end cover and is connected to the front end of the rotating shaft drive, and the second gear box is fixed on the rear side of the second end cover and is connected to the rear end of the rotating shaft drive.

[0012] The beneficial effects of the present invention are as follows: after the motor is energized, the rotary drive assembly drives the rotary shaft to rotate. By arranging the two ends of the rotary shaft to pass through the outside of the first end cover and the second end cover, both ends of a single motor can be connected to the gear box for use, thereby driving the floor brushes to rotate through the gear boxes on both sides at the same time. The advantage is that the cost and volume of the motor can be greatly reduced, which is conducive to the miniaturized design of the product and can enable the floor brushes on both sides of the vacuum cleaner to operate synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall structure diagram of the utility model (front view);

[0014] Figure 2 This is the overall structure diagram of the utility model (rear view);

[0015] Figure 3 This is the overall structure diagram of the utility model (where the motor housing is hidden);

[0016] Figure 4 This is the overall structure diagram of the utility model (including the first gear box and the second gear box);

[0017] Description of reference numerals:

[0018] 01. Motor housing; 02. First end cover; 021. First circular groove; 022. First arcuate groove; 023. Positioning groove; 03. Second end cover; 031. Second circular groove; 032. Second arcuate groove; 033. Positioning hole; 04. First bearing; 05. Second bearing; 06. Rotary drive assembly; 061. Stator; 062. Rotor; 063. Commutator; 064. Carbon brush assembly; 07. Rotating shaft; 071. First connecting plane; 072. Second connecting plane; 08. First gearbox; 09. Second gearbox. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figures 1 to 3 As shown, a motor structure with gearboxes at both ends includes a motor housing 01, a first end cover 02, a second end cover 03, a first bearing 04, a second bearing 05, a rotary drive assembly 06 and a rotary shaft 07. The first end cover 02 is fixed to the front end of the motor housing 01, the first bearing 04 is fixed to the middle part of the first end cover 02, the second end cover 03 is fixed to the rear end of the motor housing 01, the second bearing 05 is fixed to the middle part of the second end cover 03, the rotary drive assembly 06 is installed in the motor housing 01, the rotary shaft 07 is connected to the power output end of the rotary drive assembly 06, the front and rear ends of the rotary shaft 07 pass through the first end cover 02 and the second end cover 03 respectively, and the front and rear ends of the rotary shaft 07 are rotatably mounted on the first bearing 04 and the second bearing 05 respectively.

[0021] After the motor is powered on, the rotary drive assembly 06 drives the rotary shaft 07 to rotate. By setting the two ends of the rotary shaft 07 to pass through the outside of the first end cover 02 and the second end cover 03, both ends of a single motor can be connected to the gear box for use, thereby driving the floor brush to rotate through the gear boxes on both sides at the same time. The advantage is that it can greatly reduce the cost and volume of the motor, which is conducive to the miniaturization design of the product, and can make the floor brushes on both sides of the vacuum cleaner run synchronously.

[0022] A first circular groove 021 is defined in the center of the front end of the first end cap 02, and a second circular groove 031 is defined in the center of the rear end of the second end cap 03. The front and rear ends of the rotating shaft 07 correspond to the first and second circular grooves 021 and 031, respectively. When assembling the gearbox with the first and second end caps 02 and 03, the first and second circular grooves 021 and 031 serve as guides and stoppers, facilitating quick installation of the gearbox.

[0023] The front end of the first end cap 02 is provided with multiple groups of first arcuate grooves 022, which are evenly distributed around the periphery of the first circular groove 021. The rear end of the second end cap 03 is provided with multiple groups of second arcuate grooves 032, which are evenly distributed around the periphery of the second circular groove 031. The first and second arcuate grooves 022 and 032 can reduce the weight of the first and second end caps 02 and 03, thereby reducing the overall weight of the motor.

[0024] The outer edge of the first end cap 02 is evenly distributed with three sets of positioning grooves 023, and the outer edge of the second end cap 03 is evenly distributed with three sets of positioning holes 033. The three sets of positioning grooves 023 and the three sets of positioning holes 033 are staggered. Positioning grooves 023 enable the gearbox to be accurately installed on the first end cap 02, and positioning holes 033 enable the gearbox to be accurately installed on the second end cap 03. The staggered positions of positioning grooves 023 and positioning holes 033 provide a preventative measure, preventing the gearboxes at both ends from being installed upside down.

[0025] The rotating drive assembly 06 includes a stator 061, a rotor 062, a commutator 063 and a carbon brush assembly 064. The stator 061 is fixed to the inner wall of the motor housing 01, the rotor 062 and the commutator 063 are fixed on the rotating shaft 07, the winding on the rotor 062 is connected to the commutator 063, the carbon brush assembly 064 is fixed in the motor housing 01 and corresponds to the rear side of the first end cover 02, and the carbon brushes on the carbon brush assembly 064 are in contact with the commutator 063.

[0026] The front end of the rotating shaft 07 is provided with a first connecting surface 071, and the rear end of the rotating shaft 07 is provided with a second connecting surface 072. The positions where the gearboxes at both ends connect with the rotating shaft 07 are respectively configured to match the first connecting surface 071 and the second connecting surface 072, allowing the gearboxes to be quickly assembled and connected to the rotating shaft 07.

[0027] In this design, it also includes a first gearbox 08 and a second gearbox 09. The first gearbox 08 is fixed on the front side of the first end cover 02 and is connected to the front end of the rotating shaft 07. The second gearbox 09 is fixed on the rear side of the second end cover 03 and is connected to the rear end of the rotating shaft 07.

[0028] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A motor structure with gearboxes installed at both ends, characterized by: It includes a motor housing, a first end cover, a second end cover, a first bearing, a second bearing, a rotary drive assembly and a rotary shaft, wherein the first end cover is fixed to the front end of the motor housing, the first bearing is fixed to the middle part of the first end cover, the second end cover is fixed to the rear end of the motor housing, the second bearing is fixed to the middle part of the second end cover, the rotary drive assembly is installed in the motor housing, the rotary shaft is connected to the power output end of the rotary drive assembly, the front and rear ends of the rotary shaft pass through the first end cover and the second end cover respectively, and the front and rear ends of the rotary shaft are rotatably mounted on the first bearing and the second bearing respectively.

2. The motor structure with gearboxes installed at both ends according to claim 1, characterized in that: A first circular groove is provided in the middle of the front end of the first end cover, and a second circular groove is provided in the middle of the rear end of the second end cover. The front and rear ends of the rotating shaft correspond to the first circular groove and the second circular groove respectively.

3. The motor structure with gearboxes installed at both ends according to claim 2, characterized in that: The front end of the first end cover is provided with multiple groups of first arcuate grooves, which are evenly distributed on the outer circumference of the first circular groove; the rear end of the second end cover is provided with multiple groups of second arcuate grooves, which are evenly distributed on the outer circumference of the second circular groove.

4. The motor structure with gearboxes installed at both ends according to claim 1, characterized in that: Three groups of positioning grooves are evenly arranged on the outer peripheral edge of the first end cover, and three groups of positioning holes are evenly arranged on the outer peripheral edge of the second end cover. The positions of the three groups of positioning grooves and the three groups of positioning holes are staggered.

5. The motor structure with gearboxes installed at both ends according to claim 1, characterized in that: The rotary drive assembly includes a stator, a rotor, a commutator and a carbon brush assembly. The stator is fixed to the inner wall of the motor housing, the rotor and the commutator are fixed to the rotating shaft, the winding on the rotor is connected to the commutator, and the carbon brush assembly is fixed in the motor housing and corresponds to the rear side of the first end cover. The carbon brushes on the carbon brush assembly are in contact with the commutator.

6. The motor structure with gearboxes installed at both ends according to claim 1, characterized in that: A first connection plane is provided on the front end side of the rotating shaft, and a second connection plane is provided on the rear end side of the rotating shaft.

7. The motor structure with gearboxes installed at both ends according to claim 1, characterized in that: It also includes a first gear box and a second gear box, the first gear box is fixed on the front side of the first end cover and connected to the front end of the rotating shaft drive, and the second gear box is fixed on the rear side of the second end cover and connected to the rear end of the rotating shaft drive.

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