Micro motor with strong anti-electromagnetic interference performance

Abstract

The utility model discloses a miniature motor with strong anti-electromagnetic interference performance, comprising a motor casing, the inner wall of the motor casing is fixedly connected with a first shielding arc plate and a second shielding arc plate in sequence from front to back, and the outer surface of the motor casing is fixedly connected with an upper flux sleeve and a lower flux sleeve in sequence from top to bottom. The upper surface of the motor shell is fixedly connected with an upper shielding cover, and the lower surface of the motor shell is fixedly connected with a lower shielding cover. The first shielding arc plate, the second shielding arc plate, the upper magnetic conductive sleeve and the lower magnetic conductive sleeve are used for inner layer protection and outer layer protection of the micro motor respectively; the upper shielding cover and the lower shielding cover are used for protecting the ends at the two ends of the micro motor respectively, the first shielding arc plate and the second shielding arc plate provide main double-layer strong anti-electromagnetic interference with the upper magnetic conductive sleeve and the lower magnetic conductive sleeve, and the upper shielding cover and the lower shielding cover are used for assisting in providing anti-electromagnetic interference for the ends. Therefore, anti-electromagnetic interference at the inner layer, the outer layer and the end of the micro motor is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of micro motors, in particular to a micro motor with strong anti-electromagnetic interference performance. Background Art

[0002] A micro motor is a type of electric motor with a small size and capacity, an output power generally below a few hundred watts, and special requirements for use, performance and environmental conditions. A micro motor refers to a motor with a diameter less than 160mm or a rated power less than 750W. Micro motors are often used in control systems or transmission mechanical loads to realize functions such as detection, analytical calculation, amplification, execution or conversion of electromechanical signals or energy.

[0003] After searching, it was found that in the Chinese Public Utility Model Patent Publication No. CN216312883U, a micro motor with strong anti-electromagnetic interference performance was disclosed. The interference object is surrounded by the micro motor body by covering the left and right magnetic shells, thereby cutting off or weakening the spatial coupling channel of the interference field and preventing the transmission of its electromagnetic energy, thereby improving the anti-electromagnetic interference performance of the micro motor body. However, in the above device, the magnetic shell is sleeved on the outside of the motor, and the magnetic shell is too thick and the installation method is too cumbersome, which makes the volume of the entire micro motor larger, and the single-layer protection cannot make the micro motor have a strong anti-electromagnetic interference ability. Therefore, a micro motor with an inner and outer double layer and an easy-to-install anti-electromagnetic interference structure is needed. Utility Model Content

[0004] The main purpose of the utility model is to provide a micro motor with strong anti-electromagnetic interference performance, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A micro motor with strong anti-electromagnetic interference performance comprises a motor shell, the inner wall of the motor shell is fixedly connected with a first shielding arc plate and a second shielding arc plate in sequence from front to back, the outer surface of the motor shell is fixedly connected with an upper magnetic conductive sleeve and a lower magnetic conductive sleeve in sequence from top to bottom, the upper surface of the motor shell is fixedly connected with an upper shielding cover, the lower surface of the motor shell is fixedly connected with a lower shielding cover, and a rotor assembly is arranged inside the motor shell.

[0007] In order to achieve the effect of limiting the position of the rotor assembly, as a micro motor with strong anti-electromagnetic interference performance of the utility model, the upper shielding cover and the lower shielding cover are completely consistent in shape and size, the outer surface of the upper shielding cover is fixedly connected with a convex ring, and the inner top wall of the upper shielding cover is fixedly connected with a limiting ring.

[0008] In order to achieve the effect of fixing the first shielding arc plate and the second shielding arc plate, as a micro motor with strong anti-electromagnetic interference performance of the utility model, the lower surface of the upper shielding cover is fixedly connected with the first limiting arc plate and the second limiting arc plate in sequence from front to back, and the upper surface of the upper shielding cover is provided with a groove.

[0009] In order to achieve the effect of sealing the top and bottom ends of the motor housing, as a micro motor with strong anti-electromagnetic interference performance of the utility model, the upper surface of the upper shielding cover is fixedly connected with a top shell cover, and the lower surface of the lower shielding cover is fixedly connected with a bottom shell cover, and the top shell cover and the bottom shell cover are exactly the same in shape and size.

[0010] In order to achieve the effect of fixing the upper shielding cover, as a micro motor with strong anti-electromagnetic interference performance of the utility model, the inner wall of the top shell cover is provided with an internal thread, and the outer surface of the upper shielding cover is provided with an external thread.

[0011] In order to achieve the effect of connecting the top shell cover and the upper shielding cover, as a micro motor with strong anti-electromagnetic interference performance of the utility model, the inner top wall of the top shell cover is fixedly connected with a protrusion, and a slot is arranged inside the top shell cover.

[0012] In order to achieve the effect of fixing the reinforcement strip, as a micro motor with strong anti-electromagnetic interference performance of the utility model, the inner wall of the top shell cover is fixedly connected with an inner ring, and the upper surface of the top shell cover is provided with a card slot.

[0013] In order to achieve the effect of fixing the bottom of the upper magnetic conductive sleeve and the top of the lower magnetic conductive sleeve, as a micro motor with strong anti-electromagnetic interference performance of the utility model, the inner wall of the slot is fixedly connected with a reinforcement strip, and the inner wall of the reinforcement strip is fixedly connected with a ring.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The micro motor with strong anti-electromagnetic interference performance is provided with a first shielding arc plate, a second shielding arc plate, an upper magnetic sleeve, a lower magnetic sleeve, and an upper shielding cover and a lower shielding cover. The first shielding arc plate and the second shielding arc plate and the upper magnetic sleeve and the lower magnetic sleeve are respectively the inner layer protection and the outer layer protection of the micro motor, the upper shielding cover and the lower shielding cover are respectively the end protections at both ends of the micro motor, the first shielding arc plate and the second shielding arc plate and the upper magnetic sleeve and the lower magnetic sleeve provide the main double-layer strong anti-electromagnetic interference, and the upper shielding cover and the lower shielding cover assist in providing anti-electromagnetic interference to the end, thereby providing the micro motor with inner and outer double layers and anti-electromagnetic interference at the end.

[0016] 2. The micro motor with strong anti-electromagnetic interference performance is provided with a top shell cover, an internal thread, an external thread, a convex block, a slot, an inner ring, a bottom shell cover, a slot, a reinforcement strip and a collar. The tops of the first shielding arc plate and the second shielding arc plate are respectively inserted into the first limiting arc plate and the second limiting arc plate on the upper shielding cover, and the bottoms of the first shielding arc plate and the second shielding arc plate are respectively inserted into the first limiting arc plate and the second limiting arc plate on the lower shielding cover, and the positions of the first shielding arc plate and the second shielding arc plate are fixed. The top of the upper magnetic conductive sleeve is connected by an external thread. The top shell cover is connected with the internal thread in the top shell cover, and its bottom end is inserted into the collar. The bottom end of the lower magnetic conductive sleeve is connected with the internal thread in the bottom shell cover through the external thread, and its top end is inserted into the collar. The positions of the upper magnetic conductive sleeve and the lower magnetic conductive sleeve are fixed. The upper shielding cover and the lower shielding cover are respectively inserted into the top and bottom ends of the motor shell. The top shell cover and the bottom shell cover are respectively covered on the upper shielding cover and the lower shielding cover. The positions of the upper shielding cover and the lower shielding cover are fixed, and the fixing relationship is strengthened by the reinforcement strip, so that the anti-electromagnetic interference structure is easy to be installed on the micro motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a micro motor with strong anti-electromagnetic interference performance according to Embodiment 1 of the utility model;

[0018] Figure 2 This is a schematic diagram of the axonometric structure of a micro motor with strong anti-electromagnetic interference performance when viewed from above in Example 1 of the utility model;

[0019] Figure 3 This is a schematic cross-sectional structural diagram of a micro motor with strong anti-electromagnetic interference performance in the front view of Example 1 of the utility model;

[0020] Figure 4 This is a schematic diagram of the exploded structure of a magnetically conductive sleeve in a micro motor with strong anti-electromagnetic interference performance in Example 1 of the utility model;

[0021] Figure 5 This is a schematic diagram of the explosion structure of a shielding arc plate in a micro motor with strong anti-electromagnetic interference performance in Example 1 of the utility model;

[0022] Figure 6 This is a schematic diagram of the axonometric structure of a motor housing in a micro motor with strong anti-electromagnetic interference performance in Example 1 of the utility model;

[0023] In the figure: 1, motor housing; 2, first shielding arc plate; 3, second shielding arc plate; 4, upper magnetic conductive sleeve; 5, lower magnetic conductive sleeve; 6, upper shielding cover; 7, convex ring; 8, limiting ring; 9, first limiting arc plate; 10, second limiting arc plate; 11, lower shielding cover; 12, groove; 13, top shell cover; 14, internal thread; 15, external thread; 16, bump; 17, slot; 18, inner ring; 19, bottom shell cover; 20, slot; 21, reinforcement strip; 22, collar; 23, rotor assembly. DETAILED DESCRIPTION

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

[0025] Example 1

[0026] like Figure 1-6 As shown, a micro motor with strong anti-electromagnetic interference performance includes a motor housing 1, the inner wall of the motor housing 1 is fixedly connected with a first shielding arc plate 2 and a second shielding arc plate 3 in sequence from front to back, the outer surface of the motor housing 1 is fixedly connected with an upper magnetic conductive sleeve 4 and a lower magnetic conductive sleeve 5 in sequence from top to bottom, the upper surface of the motor housing 1 is fixedly connected with an upper shielding cover 6, the lower surface of the motor housing 1 is fixedly connected with a lower shielding cover 11, and a rotor assembly 23 is arranged inside the motor housing 1.

[0027] During specific use, through the arrangement of the first shielding arc plate 2, the second shielding arc plate 3, the upper magnetic conductive sleeve 4, the lower magnetic conductive sleeve 5, the upper shielding cover 6 and the lower shielding cover 11, the tops of the first shielding arc plate 2 and the second shielding arc plate 3 are respectively inserted into the first limiting arc plate 9 and the second limiting arc plate 10 on the upper shielding cover 6, and the bottoms of the first shielding arc plate 2 and the second shielding arc plate 3 are respectively inserted into the first limiting arc plate 9 and the second limiting arc plate 10 on the lower shielding cover 11, so as to fix the positions of the first shielding arc plate 2 and the second shielding arc plate 3, the top end of the upper magnetic conductive sleeve 4 is connected with the internal thread 14 in the top shell cover 13 through the external thread 15, and the bottom end thereof is inserted into the collar 22, the bottom end of the lower magnetic conductive sleeve 5 is connected with the internal thread 14 in the bottom shell cover 19 through the external thread 15, and the top end thereof is inserted into the collar 22, so as to fix the positions of the upper magnetic conductive sleeve 4 and the lower magnetic conductive sleeve 5 The upper shielding cover 6 and the lower shielding cover 11 are respectively inserted into the top and bottom ends of the motor housing 1, and the top shell cover 13 and the bottom shell cover 19 are respectively covered on the upper shielding cover 6 and the lower shielding cover 11 to fix the positions of the upper shielding cover 6 and the lower shielding cover 11, and the fixing relationship is strengthened by the reinforcement strip 21. The first shielding arc plate 2 and the second shielding arc plate 3 and the upper magnetic sleeve 4 and the lower magnetic sleeve 5 are respectively the inner and outer protections of the micro motor, and the upper shielding cover 6 and the lower shielding cover 11 are respectively the end protections of the micro motor at both ends. The first shielding arc plate 2 and the second shielding arc plate 3 and the upper magnetic sleeve 4 and the lower magnetic sleeve 5 provide the main double-layer strong anti-electromagnetic interference, and the upper shielding cover 6 and the lower shielding cover 11 provide auxiliary anti-electromagnetic interference to the end, so that the anti-electromagnetic interference structure is easy to be installed on the micro motor, and the micro motor is provided with inner and outer double layers and anti-electromagnetic interference at the end.

[0028] In this embodiment, the upper shielding cover 6 and the lower shielding cover 11 are completely consistent in shape and size. A convex ring 7 is fixedly connected to the outer surface of the upper shielding cover 6 , and a limit ring 8 is fixedly connected to the inner top wall of the upper shielding cover 6 .

[0029] During specific use, the position of the rotor assembly 23 is limited by the setting of the limiting ring 8.

[0030] In this embodiment, the lower surface of the upper shielding cover 6 is fixedly connected with a first limiting arc plate 9 and a second limiting arc plate 10 in sequence from front to back, and a groove 12 is formed on the upper surface of the upper shielding cover 6 .

[0031] During specific use, the first arc-limiting plate 9 and the second arc-limiting plate 10 are provided to fix the first arc-shielding plate 2 and the second arc-shielding plate 3 .

[0032] In this embodiment, a top shell cover 13 is fixedly connected to the upper surface of the upper shielding cover 6 , and a bottom shell cover 19 is fixedly connected to the lower surface of the lower shielding cover 11 . The top shell cover 13 and the bottom shell cover 19 are completely identical in shape and size.

[0033] When in use, the top and bottom ends of the motor housing 1 are closed by the arrangement of the top housing cover 13 and the bottom housing cover 19 .

[0034] In this embodiment, an inner wall of the top shell cover 13 is provided with an internal thread 14 , and an outer surface of the upper shielding cover 6 is provided with an external thread 15 .

[0035] During specific use, the upper shielding cover 6 is fixed by setting the internal thread 14 and the external thread 15 .

[0036] In this embodiment, a protrusion 16 is fixedly connected to the inner top wall of the top shell cover 13 , and a slot 17 is disposed inside the top shell cover 13 .

[0037] During specific use, the top shell cover 13 and the upper shielding cover 6 are conveniently connected by the arrangement of the protrusion 16 and the slot 17 .

[0038] In this embodiment, an inner ring 18 is fixedly connected to the inner wall of the top shell cover 13 , and a slot 20 is formed on the upper surface of the top shell cover 13 .

[0039] During specific use, the reinforcing strip 21 is fixed by setting the card slot 20 .

[0040] In this embodiment, a reinforcement strip 21 is fixedly connected to the inner wall of the slot 20 , and a collar 22 is fixedly connected to the inner wall of the reinforcement strip 21 .

[0041] During specific use, the bottom of the upper magnetic conductive sleeve 4 and the top of the lower magnetic conductive sleeve 5 are fixed by setting the collar 22 .

[0042] Working principle: The tops of the first shielding arc plate 2 and the second shielding arc plate 3 are respectively inserted into the first limiting arc plate 9 and the second limiting arc plate 10 on the upper shielding cover 6, and the bottoms of the first shielding arc plate 2 and the second shielding arc plate 3 are respectively inserted into the first limiting arc plate 9 and the second limiting arc plate 10 on the lower shielding cover 11, so as to fix the positions of the first shielding arc plate 2 and the second shielding arc plate 3. The top end of the upper magnetic conductive sleeve 4 is connected with the internal thread 14 in the top shell cover 13 through the external thread 15, and the bottom end thereof is inserted into the collar 22. The bottom end of the lower magnetic conductive sleeve 5 is connected with the internal thread 14 in the bottom shell cover 19 through the external thread 15, and the top end thereof is inserted into the collar 22, so as to fix the positions of the upper magnetic conductive sleeve 4 and the lower magnetic conductive sleeve 5. The upper shielding cover 6 and the lower shielding cover 11 are respectively inserted into the top and bottom ends of the motor housing 1, the top shell cover 13 and the bottom shell cover 19 are respectively covered on the upper shielding cover 6 and the lower shielding cover 11, the upper shielding cover 6 and the lower shielding cover 11 are fixed in position, and the fixing relationship is strengthened by the reinforcement strip 21, the first shielding arc plate 2 and the second shielding arc plate 3 and the upper magnetic sleeve 4 and the lower magnetic sleeve 5 are respectively the inner and outer protections of the micro motor, the upper shielding cover 6 and the lower shielding cover 11 are respectively the end protections of the micro motor at both ends, the first shielding arc plate 2 and the second shielding arc plate 3 and the upper magnetic sleeve 4 and the lower magnetic sleeve 5 provide the main double-layer strong anti-electromagnetic interference, and the upper shielding cover 6 and the lower shielding cover 11 provide auxiliary anti-electromagnetic interference for the end.

[0043] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A micro motor with strong anti-electromagnetic interference performance, comprising a motor housing (1), characterized in that: The inner wall of the motor housing (1) is fixedly connected with a first shielding arc plate (2) and a second shielding arc plate (3) in sequence from front to back, the outer surface of the motor housing (1) is fixedly connected with an upper magnetic conductive sleeve (4) and a lower magnetic conductive sleeve (5) in sequence from top to bottom, the upper surface of the motor housing (1) is fixedly connected with an upper shielding cover (6), the lower surface of the motor housing (1) is fixedly connected with a lower shielding cover (11), and a rotor assembly (23) is arranged inside the motor housing (1).

2. A micro motor with strong anti-electromagnetic interference performance according to claim 1, characterized in that: The upper shielding cover (6) and the lower shielding cover (11) are completely identical in shape and size; a convex ring (7) is fixedly connected to the outer surface of the upper shielding cover (6); and a limiting ring (8) is fixedly connected to the inner top wall of the upper shielding cover (6).

3. The micro motor with strong anti-electromagnetic interference performance according to claim 1, characterized in that: The lower surface of the upper shielding cover (6) is fixedly connected with a first limiting arc plate (9) and a second limiting arc plate (10) in sequence from front to back, and a groove (12) is provided on the upper surface of the upper shielding cover (6).

4. The micro motor with strong anti-electromagnetic interference performance according to claim 1, characterized in that: The upper surface of the upper shielding cover (6) is fixedly connected to a top shell cover (13), and the lower surface of the lower shielding cover (11) is fixedly connected to a bottom shell cover (19); the top shell cover (13) and the bottom shell cover (19) are completely identical in shape and size.

5. A micro motor with strong anti-electromagnetic interference performance according to claim 4, characterized in that: The inner wall of the top shell cover (13) is provided with an internal thread (14), and the outer surface of the upper shielding cover (6) is provided with an external thread (15).

6. A micro motor with strong anti-electromagnetic interference performance according to claim 4, characterized in that: A protrusion (16) is fixedly connected to the inner top wall of the top shell cover (13), and a slot (17) is arranged inside the top shell cover (13).

7. The micro motor with strong anti-electromagnetic interference performance according to claim 4, characterized in that: An inner ring (18) is fixedly connected to the inner wall of the top shell cover (13), and a clamping groove (20) is provided on the upper surface of the top shell cover (13).

8. The micro motor with strong anti-electromagnetic interference performance according to claim 7, characterized in that: A reinforcing strip (21) is fixedly connected to the inner wall of the clamping slot (20), and a collar (22) is fixedly connected to the inner wall of the reinforcing strip (21).

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