Miniature coreless motor convenient to disassemble

Abstract

The utility model discloses a miniature coreless motor convenient to disassemble, which belongs to the field of coreless motors and comprises a motor end cover, a boss end is arranged on the edge of one side of an outer cambered surface of the motor end cover, a groove is arranged on one side of the motor end cover close to the boss end, and a sealing washer is movably lapped on an inner cambered surface of the groove. A hole is formed in the edge of the outer cambered surface of the motor end cover, an annular groove is formed in the inner side wall of the motor end cover, the inner cambered surface of the motor end cover is movably connected with the motor shell, the motor shell is plugged into the motor end cover, and then the steel ball falls into the cambered surface groove to be fixed, so that the connection of the whole miniature hollow cup motor is completed. When the motor breaks down and needs to be maintained or the interior of the motor is checked, a maintainer can easily loosen the motor shell so as to dismount the motor end cover, and does not need to find a special tool to dismount screws, so that the characteristic of convenient dismounting is beneficial to shortening the maintenance time, reducing the downtime of equipment and improving the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of coreless motors, in particular to a micro coreless motor which is easy to disassemble. Background Art

[0002] Micro hollow cup motors have been widely used in modern scientific and technological products. With their advantages of small size, high efficiency and fast response, they are widely used in aerospace models, small robots, precision medical equipment (such as micro surgical instruments), consumer electronics (such as smartphone camera anti-shake devices, high-end headphones) and other fields.

[0003] The connection method between the casing and internal components of traditional motors is also relatively complicated, and may involve multiple screws or sealants. For example, the casing of some motors is sealed with sealant, and special solvents are required to dissolve the sealant during disassembly. Otherwise, it is difficult to open the casing, and this method can easily damage the motor casing. At the same time, the use of screwdrivers and tweezers increases the difficulty of hollow cup motor maintenance and disassembly, which is time-consuming and labor-intensive, and reduces maintenance efficiency.

[0004] Therefore, the utility model provides a micro hollow cup motor that is easy to disassemble to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] The utility model provides a micro hollow cup motor that is easy to disassemble, aiming to solve the problems proposed in the background technology that the existing connection methods such as screws or sealants are easy to damage the motor housing, increase the difficulty of repairing and disassembling the hollow cup motor, waste time and labor, and reduce the repair efficiency.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solution: it includes a motor end cover, a boss end is provided at the edge of one side of the outer arc surface of the motor end cover, a groove is provided on the side of the motor end cover close to the boss end, a sealing gasket is movably overlapped on the inner arc surface of the groove, a hole is provided at the edge of the outer arc surface of the motor end cover, an annular groove is provided on the inner side wall of the motor end cover, the inner arc surface of the motor end cover is movably connected to the motor housing, an arc surface groove is provided in the middle part of the outer arc surface of the motor housing, the arc surface groove and the hole are in a vertical plane, a steel ball is movably sleeved on the inner arc surface of the hole, the top end of the boss end of the outer arc surface of the motor end cover is slidably overlapped with a sliding sleeve, a cavity is provided between the sliding sleeve and the outer arc surface of the motor end cover, a compression spring is fixedly installed on the inner arc surface of the sliding sleeve, and the front end of the sliding sleeve is provided with an arc surface.

[0009] As a preferred technical solution of the present application, an abutment end is provided in the middle of the inner arc surface of the sliding sleeve, the inner arc surface of the abutment end is movably overlapped with the steel ball, the bottom of the outer arc surface of the steel ball is movably abutted with the arc surface groove, and the end of the compression spring away from the sliding sleeve is movably overlapped on one side of the boss end.

[0010] As a preferred technical solution of the present application, a gap is provided between the arc surface at the top of the sleeve and the motor housing, a sealing ring is sleeved in the gap between the sleeve and the motor housing, and the sealing ring is sleeved onto the outer arc surface of the motor housing.

[0011] As a preferred technical solution of the present application, there are several holes on the upper end of the outer arc surface of the motor housing, and they are evenly distributed on the motor housing in the form of a circular array. An anti-slip portion is provided on one edge of the outer arc surface of the sliding sleeve.

[0012] As a preferred technical solution of the present application, a supporting shoulder is movably engaged in the annular groove on the inner side wall of the motor end cover, and the outer arc surface of the supporting shoulder is provided with a table surface.

[0013] As a preferred technical solution of the present application, the outer arc surface of the table top is movably sleeved with a stop shoulder, and one side of the stop shoulder is in contact with the end of the motor housing.

[0014] As a preferred technical solution of the present application, the outer arc surface of the supporting shoulder is fitted on the inner arc surface of the motor housing, the motor end cover and the motor housing are tightly connected by steel balls, and the abutting end, hole and arc groove are in the same vertical plane.

[0015] (3) Beneficial effects

[0016] By inserting the motor housing into the motor end cover, and then the steel ball falls into the arc groove and is fixed, the entire micro hollow cup motor is connected. When the motor fails and needs maintenance or internal inspection of the motor, the maintenance personnel can easily loosen the motor housing and remove the motor end cover without finding special tools to remove the screws. This easy disassembly feature helps shorten maintenance time, reduce equipment downtime, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the partial structure of the end cover and housing of a micro hollow cup motor that is easy to disassemble;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of a motor end cover of a micro hollow cup motor that is easy to disassemble;

[0019] Figure 3 This is a schematic diagram of the overall planar cross-section structure of a micro hollow cup motor that is easy to disassemble;

[0020] Figure 4 A schematic diagram of the disassembled structure of the motor end cover and motor housing of a micro hollow cup motor that is easy to disassemble;

[0021] Figure 5 The diagram is a partial cross-sectional structural diagram of a supporting shoulder of a micro hollow cup motor that is easy to disassemble.

[0022] In the picture:

[0023] 1. Motor end cover; 101. Boss end; 102. Groove; 2. Sealing gasket; 3. Hole; 4. Motor housing; 401. Arc groove; 5. Steel ball; 6. Sleeve; 601. Abutment end; 602. Anti-slip portion; 7. Cavity groove; 8. Compression spring; 9. Sealing ring; 10. Support shoulder; 11. Table top; 12. Stop shoulder. DETAILED DESCRIPTION

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

[0025] The utility model provides a micro hollow cup motor which is easy to disassemble. Figures 1 to 5As shown, it includes a motor end cover 1, a boss end 101 is provided at the edge of one side of the outer arc surface of the motor end cover 1, a groove 102 is provided on the side of the motor end cover 1 close to the boss end 101, and a sealing gasket 2 is movably overlapped on the inner arc surface of the groove 102, a hole 3 is provided at the edge of the outer arc surface of the motor end cover 1, an annular groove is provided on the inner side wall of the motor end cover 1, and the inner arc surface of the motor end cover 1 is movably connected to the motor housing 4, and an arc groove 401 is provided in the middle of the outer arc surface of the motor housing 4, and the arc groove 401 and the hole 3 are in a vertical plane. A steel ball 5 is movably sleeved on the inner arc surface of the hole 3, and a sliding sleeve 6 is slidably overlapped on the top of the outer arc surface boss end 101 of the motor end cover 1, and a cavity groove 7 is provided between the sliding sleeve 6 and the outer arc surface of the motor end cover 1. A compression spring 8 is fixedly installed on the inner arc surface, a curved surface is provided at the front end of the sliding sleeve 6, and an abutting end 601 is provided in the middle of the inner arc surface of the sliding sleeve 6. The inner arc surface of the abutting end 601 is movably overlapped with the steel ball 5, and the bottom of the outer arc surface of the steel ball 5 is movably abutted with the arc surface groove 401. The end of the compression spring 8 away from the sliding sleeve 6 is movably overlapped on the side of the boss end 101. A gap is provided between the curved surface at the top of the sliding sleeve 6 and the motor housing 4. A sealing ring 9 is sleeved in the gap between the sliding sleeve 6 and the motor housing 4. The sealing ring 9 is sleeved on the outer arc surface of the motor housing 4. The number of holes 3 on the upper end of the outer arc surface of the motor housing 4 is several, and they are evenly distributed on the motor housing 4 in the form of a ring array. An anti-slip portion 602 is provided at the edge of one side of the outer arc surface of the sliding sleeve 6.

[0026] The compression spring 8 is arranged between the sleeve 6 and the motor end cover 1, so that the sleeve 6 can be moved by the compression spring 8, which is convenient for operation control. The anti-slip part 602 is arranged on the outer side of the sleeve 6 near the edge. The anti-slip part 602 is an annular boss as a whole, and equilateral triangular grooves are evenly distributed on the boss, which can better allow the user to control the sleeve 6. The abutment end 601 is arranged on the inner side of the sleeve 6, and when the compression spring 8 is not compressed, the area covered by the abutment end 601 includes the position where the steel ball 5 is set. When the compression spring 8 is compressed, the area covered by the abutment end 601 is offset from the position where the steel ball 5 is set, so that the steel ball 5 no longer gets stuck in the motor end cover 1 and the motor housing 4.

[0027] During installation, insert the compression spring 8 into the boss end 101 outside the motor end cover 1, then put the steel ball 5 with some grease into the hole 3 of the motor end cover 1, insert the sliding sleeve 6 onto the motor end cover 1, leaving the groove 102 position, insert the sealing gasket 2 into the motor end cover 1 and one end of the compression spring 8, and play a role in limiting the movement space of the sliding sleeve 6, finally insert the motor housing 4 into the motor end cover 1, and then the steel ball 5 falls into the arc groove 401 and is fixed, so that the entire micro hollow cup motor connection is completed.

[0028] The annular groove on the inner wall of the motor end cover 1 is movably connected with a supporting shoulder 10, and the outer arc surface of the supporting shoulder 10 is provided with a table 11. The outer arc surface of the table 11 is movably sleeved with a stop shoulder 12. One side of the stop shoulder 12 is fitted with the end of the motor housing 4. The outer arc surface of the supporting shoulder 10 is fitted on the inner arc surface of the motor housing 4. The motor end cover 1 and the motor housing 4 are tightly connected by the steel ball 5. The abutting end 601, the hole 3 and the arc groove 401 are in the same vertical plane. The supporting shoulder 10 is formed around the circumference of the annular groove on the back of the motor end cover 1. In the assembled state, the end of the motor housing 4 presses against one side of the internal stop shoulder 12 and abuts against the supporting shoulder 10 so as to be kept in place in the motor end cover 1. A table 11 for accommodating the stop shoulder 12 is formed on the supporting shoulder 10. The size of the supporting shoulder 10 along the radial direction of the table 11 is larger than the size of the internal stop shoulder 12 so as to allow the internal stop shoulder 12 to undergo necessary deformation when under pressure.

[0029] The provided sealing ring 9 and sealing gasket 2 help to retain the lubricating oil or grease inside the motor to prevent leakage, ensure that the lubricating substance can continue to play a role inside the motor, reduce wear between components, and improve the efficiency of the motor.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A micro hollow cup motor that is easy to disassemble, comprising a motor end cover (1), characterized in that: The outer arc surface of the motor end cover (1) is provided with a boss end (101) at one edge thereof, the motor end cover (1) is provided with a groove (102) on the side close to the boss end (101), the inner arc surface of the groove (102) is movably overlapped with a sealing gasket (2), the outer arc surface edge of the motor end cover (1) is provided with a hole (3), the inner side wall of the motor end cover (1) is provided with an annular groove, the inner arc surface of the motor end cover (1) is movably connected to the motor housing (4), and the motor housing (4) is provided with a plurality of holes (3) at the outer arc surface edge thereof. An arc groove (401) is provided in the middle of the outer arc surface, and the arc groove (401) and the hole (3) are in a vertical plane. A steel ball (5) is movably sleeved on the inner arc surface of the hole (3). A sliding sleeve (6) is slidably overlapped on the top end of the outer arc boss end (101) of the motor end cover (1). A cavity groove (7) is provided between the sliding sleeve (6) and the outer arc surface of the motor end cover (1). A compression spring (8) is fixedly installed on the inner arc surface of the sliding sleeve (6), and a curved surface is provided at the front end of the sliding sleeve (6).

2. The micro hollow cup motor that is easy to disassemble according to claim 1, characterized in that: An abutting end (601) is provided in the middle of the inner arc surface of the sliding sleeve (6), the inner arc surface of the abutting end (601) is movably overlapped with the steel ball (5), the bottom of the outer arc surface of the steel ball (5) is movably abutted with the arc surface groove (401), and the end of the compression spring (8) away from the sliding sleeve (6) is movably overlapped with one side of the boss end (101).

3. The micro hollow cup motor that is easy to disassemble according to claim 2, characterized in that: A gap is provided between the arc-shaped surface at the top of the sliding sleeve (6) and the motor housing (4); a sealing ring (9) is sleeved in the gap between the sliding sleeve (6) and the motor housing (4); and the sealing ring (9) is sleeved onto the outer arc surface of the motor housing (4).

4. The micro hollow cup motor that is easy to disassemble according to claim 3, characterized in that: The number of holes (3) on the upper end of the outer arc surface of the motor housing (4) is several and is evenly distributed on the motor housing (4) in the form of a ring array. An anti-slip portion (602) is provided at one edge of the outer arc surface of the sliding sleeve (6).

5. The micro hollow cup motor that is easy to disassemble according to claim 2, characterized in that: A supporting shoulder (10) is movably engaged in the annular groove on the inner side wall of the motor end cover (1), and a table surface (11) is provided on the outer arc surface of the supporting shoulder (10).

6. The micro hollow cup motor that is easy to disassemble according to claim 5, characterized in that: The outer arc surface of the table top (11) is movably sleeved with a stop shoulder (12), and one side of the stop shoulder (12) is in contact with the end of the motor housing (4).

7. The micro hollow cup motor that is easy to disassemble according to claim 6, characterized in that: The outer arc surface of the supporting shoulder (10) is fitted on the inner arc surface of the motor housing (4); the motor end cover (1) and the motor housing (4) are tightly connected via a steel ball (5); and the abutting end (601), the hole (3) and the arc surface groove (401) are located in the same vertical plane.

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