A micro motor with an extended structure

Abstract

The utility model provides a kind of micro motor with extension structure, including motor body, connecting end cover and extension assembly, the rear end of motor body is equipped with rotary conveying shaft, the two sides of the front end of motor body are equipped with positioning slot, connecting end cover includes connecting sleeve ring, middle fixed plate and locking screw, the rear end of connecting sleeve ring is equipped with the positioning lug that is inserted in positioning slot, the outer periphery of connecting sleeve ring is evenly provided with multiple groups of buckling boss, middle fixed plate is fixed in the middle of connecting sleeve ring, and it is fixed in the front end of motor body by locking screw, extension assembly includes first connecting barrel, second connecting barrel, annular reinforcing rib and axial reinforcing rib, the advantage of the design is that: motor body can be inserted into sweeping roller and be in the middle of sweeping roller, make micro motor drive roller middle part rotation, make the force balance of roller both ends, it is more stable when rotating, and its service life can also be extended.

Description

Technical Field

[0001] This utility model relates to the field of micro motors, and in particular to a micro motor with an extended structure. Background Technology

[0002] In modern home and commercial cleaning, vacuum cleaners have become indispensable core equipment. The key to a vacuum cleaner's ability to quickly remove debris from the floor lies in its bottom sweeping roller. Through the friction between the roller's surface brushes or rubber strips and the floor, dust, hair, and other dirt are swept into the dust collection bin. The crucial component driving the roller's rotation is a miniature motor mounted on one side. This single-sided motor design, due to its simple structure and space-saving design, has become the mainstream solution for most mid-to-low-end vacuum cleaners, meeting basic cleaning needs in the short term.

[0003] However, the design flaws of a single-sided motor drive are also significant. From a mechanical perspective, the motor provides rotational power only at one end of the roller, leading to a severe imbalance in force on both sides: the side closer to the motor not only bears its own weight but also the torque output by the motor, while the other side relies solely on bearings for support and lacks active driving force. This imbalance is further amplified when the roller rotates at high speed, manifesting as noticeable "eccentric wobbling" during operation. This wobbling amplitude increases significantly, especially when cleaning uneven surfaces or contacting larger particles, affecting the brush's adhesion to the surface, increasing cleaning dead zones, and generating continuous high-frequency noise, thus reducing the user experience. More seriously, long-term force imbalance will significantly shorten the equipment's lifespan.

[0004] Therefore, it is necessary to develop a micro motor with an extended structure that can be inserted into the sweeping roller, so that the micro motor drives the middle part of the roller to rotate, in order to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a micro motor with an extended structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A micro motor with an extended structure includes a motor body, a connecting end cover, and an extension assembly. The rear end of the motor body is provided with a rotary conveying shaft, and both sides of the front end of the motor body are provided with positioning grooves. The connecting end cover includes a connecting collar, a central fixing plate, and a locking screw. The rear end of the connecting collar is provided with a positioning protrusion inserted into the positioning groove. Multiple sets of snap-fit ​​protrusions are evenly arranged on the outer periphery of the connecting collar. The central fixing plate is fixed in the middle of the connecting collar and is fixed to the front end of the motor body by the locking screw. The extension assembly includes a first connecting cylinder, a second connecting cylinder, an annular reinforcing rib, and an axial reinforcing rib. The rear end of the first connecting cylinder is provided with snap-fit ​​holes corresponding to the snap-fit ​​protrusions, and the snap-fit ​​protrusions snap into the snap-fit ​​holes. The second connecting cylinder is fixed to the front end of the first connecting cylinder. The annular reinforcing rib is fixed to the outer periphery of the second connecting cylinder. Multiple sets of axial reinforcing ribs are provided and correspond to the outer periphery of the second connecting cylinder. The front and rear ends of the axial reinforcing ribs are fixed to the annular reinforcing rib and the first connecting cylinder, respectively.

[0008] Further description of the present invention: The connecting collar is provided with multiple sets of outwardly protruding limiting bosses, and the rear end of the first connecting cylinder is provided with multiple sets of limiting grooves, with the multiple sets of limiting bosses corresponding to the multiple sets of limiting grooves respectively.

[0009] Further description of the present invention: The middle fixing plate is provided with a pin clearance hole, which corresponds to the inner side of the limiting boss. The front end of the motor body is provided with a previously protruding connecting pin, which passes through the pin clearance hole.

[0010] Further description of the present invention: The outer periphery of the first connecting cylinder is provided with multiple sets of heat dissipation holes evenly distributed.

[0011] Further description of the present invention: The second connecting cylinder is provided with a mounting through hole in the middle, and the second connecting cylinder is also provided with multiple sets of wire passing through holes surrounding the mounting through hole.

[0012] Further description of this utility model: The extension component is made of plastic material.

[0013] Further description of this utility model: The extension component is made of metal material.

[0014] The beneficial effects of this utility model are as follows: the positioning boss on the connecting end cover is inserted into the positioning groove, and the middle fixing plate is fixed to the motor body by locking screws, thus making the connecting end cover and the motor body firmly connected. The rear end of the first connecting cylinder is sleeved on the outer circumference of the connecting collar and is fastened to the fastening boss on the connecting collar through the fastening hole, thereby fixing the extension component to the connecting end cover. The extension component is fixed to the mounting housing of the sweeping roller through the front end of the second connecting cylinder, and the motor body is inserted into the sweeping roller, with the rotating output shaft located in the middle of the sweeping roller. The rotating output shaft is connected to the sweeping roller, thereby driving the sweeping roller to rotate. The annular reinforcing rib can enhance the radial strength of the second connecting cylinder, and the axial reinforcing rib can enhance the axial strength of the second connecting cylinder, making the extension component less prone to deformation and the motor body to operate stably. The advantage of this design is that the motor body can be inserted into the sweeping roller and located in the middle of the sweeping roller, so that the micro motor drives the middle of the roller to rotate, making the force on both ends of the roller balanced, its rotation is more stable, and its service life can be extended. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the present invention;

[0016] Figure 2 This is a structural diagram of the motor body in this utility model;

[0017] Figure 3 This is a structural diagram of the connecting end cap in this utility model;

[0018] Figure 4 This is a structural diagram of the extension component in this utility model;

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Motor body; 11. Rotary output shaft; 12. Positioning groove; 13. Connecting pin; 2. Connecting end cover; 21. Connecting collar; 211. Positioning protrusion; 212. Snap-fitting boss; 213. Limiting boss; 22. Central fixing plate; 221. Pin clearance hole; 23. Locking screw; 3. Extension assembly; 31. First connecting cylinder; 311. Snap-fitting hole; 312. Limiting groove; 313. Heat dissipation hole; 32. Second connecting cylinder; 321. Mounting through hole; 322. Wire through hole; 33. Annular reinforcing rib; 34. Axial reinforcing rib. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] like Figures 1 to 4As shown, a micro motor with an extended structure includes a motor body 1, a connecting end cover 2, and an extension assembly 3. The rear end of the motor body 1 is provided with a rotary conveying shaft, and both sides of the front end of the motor body 1 are provided with positioning grooves 12. The connecting end cover 2 includes a connecting collar 21, a central fixing plate 22, and a locking screw 23. The rear end of the connecting collar 21 is provided with a positioning protrusion 211 inserted into the positioning groove 12. Multiple sets of snap-fit ​​protrusions 212 are evenly arranged on the outer periphery of the connecting collar 21. The central fixing plate 22 is fixed in the middle of the connecting collar 21 and is fixed to the motor body by the locking screw 23. The front end of body 1, the extension component 3 includes a first connecting cylinder 31, a second connecting cylinder 32, an annular reinforcing rib 33 and an axial reinforcing rib 34. The rear end of the first connecting cylinder 31 is provided with a fastening hole 311 corresponding to the fastening boss 212. The fastening boss 212 is fastened to the fastening hole 311. The second connecting cylinder 32 is fixed to the front end of the first connecting cylinder 31. The annular reinforcing rib 33 is fixed to the outer periphery of the second connecting cylinder 32. Multiple sets of axial connecting ribs are provided and correspond to the outer periphery of the second connecting cylinder 32. The front and rear ends of the axial connecting ribs are respectively fixed to the annular connecting rib and the first connecting cylinder 31.

[0023] The positioning boss on the connecting end cover 2 is inserted into the positioning groove 12, and the middle fixing plate 22 is fixed to the motor body 1 by the locking screw 23, so that the connecting end cover 2 and the motor body 1 are firmly connected. The rear end of the first connecting cylinder 31 is sleeved on the outer circumference of the connecting collar 21, and is fastened to the fastening boss 212 on the connecting collar 21 through the fastening hole 311, thereby fixing the extension component 3 on the connecting end cover 2. The extension component 3 is fixed to the mounting housing of the sweeping roller through the front end of the second connecting cylinder 32, while the motor body is inserted into the sweeping roller and the rotating output shaft 11 is located in the middle of the sweeping roller. The rotating output shaft 11 is connected to the sweeping roller, thereby driving the sweeping roller to rotate. The annular reinforcing rib 33 can enhance the radial strength of the second connecting cylinder 32, and the axial reinforcing rib 34 can enhance the axial strength of the second connecting cylinder 32, making the extension component 3 less prone to deformation and the motor body 1 running stably. The advantage of this design is that the motor body 1 can be inserted into the sweeping roller and located in the middle of the sweeping roller, so that the micro motor drives the middle of the roller to rotate, so that the force on both ends of the roller is balanced, making its rotation more stable and its service life can be extended.

[0024] The connecting collar 21 is provided with multiple sets of outwardly protruding limiting bosses 213, and the rear end of the first connecting cylinder 31 is provided with multiple sets of limiting grooves 312, with the multiple sets of limiting bosses 213 corresponding to the multiple sets of limiting grooves 312 respectively.

[0025] The limiting boss 213 and the limiting groove 312 work together to prevent the first connecting cylinder 31 and the connecting end cover 2 from rotating relative to each other during the operation of the motor body 1, thus avoiding abnormal noise from the equipment.

[0026] The central fixing plate 22 is provided with a pin clearance hole 221, which corresponds to the inner side of the limiting boss 213. The front end of the motor body 1 is provided with a previously protruding connecting pin 13, which passes through the pin clearance hole 221. The pin clearance hole 221 facilitates the soldering of wires to the connecting pin 13.

[0027] The outer periphery of the first connecting cylinder 31 is uniformly provided with multiple sets of heat dissipation holes 313. The heat generated by the motor body 1 is transferred into the first connecting cylinder 31 and then rapidly diffuses outward through the heat dissipation holes 313, thereby improving the heat dissipation efficiency.

[0028] The second connecting cylinder 32 has a mounting through hole 321 in the middle and multiple sets of wire-passing through holes 322 surrounding the mounting through hole 321. The guide connected to the connecting pin 13 passes through the first connecting cylinder 31 and exits through the wire-passing through hole 322 of the second connecting cylinder 32. The mounting through hole 321 is used to engage with screws to install the second connecting cylinder 32 onto the equipment housing.

[0029] The extension component 3 can be made of plastic material, which is inexpensive and lightweight.

[0030] The extension component 3 can also be made of metal, which is stronger, more durable, and has better heat dissipation.

[0031] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A miniature motor with an extended structure, characterized in that: The device includes a motor body, a connecting end cover, and an extension assembly. The motor body has a rotating conveying shaft at its rear end and positioning grooves on both sides of its front end. The connecting end cover includes a connecting collar, a central fixing plate, and a locking screw. The connecting collar has a positioning protrusion inserted into the positioning groove at its rear end. Multiple sets of snap-fit ​​protrusions are evenly arranged on the outer circumference of the connecting collar. The central fixing plate is fixed to the middle of the connecting collar and to the front end of the motor body by the locking screw. The extension assembly includes a first connecting cylinder, a second connecting cylinder, an annular reinforcing rib, and an axial reinforcing rib. The rear end of the first connecting cylinder has snap-fit ​​holes corresponding to the snap-fit ​​protrusions, and the snap-fit ​​protrusions snap into the snap-fit ​​holes. The second connecting cylinder is fixed to the front end of the first connecting cylinder. The annular reinforcing rib is fixed to the outer circumference of the second connecting cylinder. Multiple sets of axial reinforcing ribs are provided and correspond to the outer circumference of the second connecting cylinder. The front and rear ends of the axial reinforcing ribs are fixed to the annular reinforcing rib and the first connecting cylinder, respectively.

2. A micro motor with an extended structure according to claim 1, characterized in that: The connecting collar is provided with multiple sets of outwardly protruding limiting bosses, and the rear end of the first connecting cylinder is provided with multiple sets of limiting grooves, with the multiple sets of limiting bosses corresponding to the multiple sets of limiting grooves respectively.

3. A micro motor with an extended structure according to claim 2, characterized in that: The central fixing plate is provided with pin clearance holes, which correspond to the inner side of the limiting boss. The front end of the motor body is provided with previously protruding connecting pins, which pass through the pin clearance holes.

4. A micro motor with an extended structure according to claim 1, characterized in that: The outer circumference of the first connecting cylinder is uniformly provided with multiple sets of heat dissipation holes.

5. A micro motor with an extended structure according to claim 1, characterized in that: The second connecting cylinder has a mounting through hole in the middle, and the second connecting cylinder also has multiple sets of wire through holes surrounding the mounting through hole.

6. A micro motor with an extended structure according to claim 1, characterized in that: The extension component is made of plastic material.

7. A micro motor with an extended structure according to claim 1, characterized in that: The extension component is made of metal.

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