Inner rotor brushless motor

Abstract

The utility model relates to the technical field of motors, in particular to an inner rotor brushless motor, which comprises a brushless motor, and a shell of the brushless motor is provided with a silencing assembly. The silencing assembly comprises an inner cylinder sleeve arranged on a brushless motor shell, an empty groove is reserved between the outer wall of the inner cylinder sleeve and the inner wall of the outer cylinder sleeve, trapezoidal hollow blocks are arranged on the periphery of the side, tightly attached to the inner wall of the outer cylinder sleeve, of the interior of the empty groove, and the outer cylinder sleeve is arranged on the outer side of the inner cylinder sleeve. Screen plates are arranged on the outer wall of the outer cylinder sleeve at the interval of two centimeters, meshes are formed in the positions, close to the outer wall of the inner cylinder sleeve, between the two sets of trapezoid hollow blocks, and an anti-loosening belt is arranged on the periphery of the middle of the outer wall of each trapezoid hollow block. The outer wall of the brushless motor is connected with the inner cylinder sleeve and the trapezoidal hollow block in a sleeving mode, the trapezoidal hollow block is used for silencing, mesh holes and a mesh plate are used for heat dissipation, the trapezoidal hollow block is reinforced through an anti-loosening belt, and the trapezoidal hollow block is prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to an inner rotor brushless motor. Background Art

[0002] The inner rotor brushless motor is mainly composed of a stator and an inner rotor arranged in a casing, and the inner rotor is mainly composed of a rotating shaft and a magnet fixed on the rotating shaft. The magnet is generally fixed to the rotating shaft by means of glue or a retaining ring. When the motor runs at high speed for a long time, the connection strength between the motor shaft and the magnet will gradually deteriorate and there is even a risk of falling off. In addition, there is no limiting structure between the rotating shaft and the bearing. There is a certain floating during the rotation process of the rotating shaft, and the motor vibrates greatly during operation. Over time, the surface of the rotating shaft will show varying degrees of wear, which aggravates the vibration of the motor and accelerates the decline in the life of the motor.

[0003] In the patent with the publication number CN215010008U, an inner rotor brushless motor is proposed, which includes a shell and a motor part arranged in the shell. The shell includes a side shell, an upper cover and a base detachably connected to the upper and lower sides of the side shell. The motor part includes an inner rotor mechanism and a stator mechanism. The inner rotor mechanism includes a rotating shaft and a magnetic core assembly. The magnetic frame is sleeved on the magnetic frame connection section and the rotation of the magnetic frame is limited by the limit section. The magnetic frame is stuck on the lower side of the limit separation section. The first bearing is stuck between the first bearing seat and the first bearing connection section, and the second bearing is stuck between the second bearing connection section and the second bearing seat. After the shell is assembled, the upper cover and the base limit the first bearing and the second bearing. The rotating shaft cannot float when it is running. The magnetic core assembly runs stably in the magnetic frame connection section, and the upper cover connection section runs stably on the shaft hole. Its structure is simple and easy to disassemble and assemble. However, there are still the following problems in this patent:

[0004] The inner rotor is mainly composed of a rotating shaft and a magnet fixed on the rotating shaft. When the motor runs at high speed for a long time, it will generate noise, which will have a certain impact on the user. Using multiple sets of inner rotor motors at the same time will aggravate the noise generation and have a certain impact on the surrounding environment.

[0005] In view of the above problems, it is necessary to design an inner rotor brushless motor to overcome the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide an inner rotor brushless motor, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] An inner rotor brushless motor comprises a brushless motor, wherein a housing of the brushless motor is provided with a silencer assembly;

[0009] The silencer assembly includes an inner cylindrical sleeve arranged on the housing of the brushless motor, an empty groove is left between the outer wall of the inner cylindrical sleeve and the inner wall of the outer cylindrical sleeve, a trapezoidal hollow block is arranged around one side of the inner wall of the outer cylindrical sleeve in the empty groove, the outer cylindrical sleeve is arranged on the outside of the inner cylindrical sleeve, mesh plates are arranged on the outer wall of the outer cylindrical sleeve at intervals of two centimeters, mesh holes are arranged between the two groups of trapezoidal hollow blocks near the outer wall of the inner cylindrical sleeve, an anti-loosening belt is arranged around the middle of the outer wall of the trapezoidal hollow block, the right end of the opening of the anti-loosening belt is connected to a connecting plate, the middle of the left end of the connecting plate is connected to a plug plate, the left end of the opening of the anti-loosening belt is connected to a connecting groove, and a clamping block is arranged at the bottom end of the connecting groove.

[0010] As a preferred solution of the utility model, the inner wall of the group of outer cylindrical sleeves is provided with sixteen groups of trapezoidal hollow blocks, and the outer wall of the group of outer cylindrical sleeves is provided with four groups of mesh plates.

[0011] As a preferred solution of the utility model, the inner cylindrical sleeve is sleeved with the brushless motor, and the trapezoidal hollow block is bonded with the outer cylindrical sleeve.

[0012] As a preferred solution of the utility model, the outer cylindrical sleeve is detachably connected to the inner cylindrical sleeve, the mesh plate is non-detachably connected to the outer cylindrical sleeve, and the mesh hole is non-detachably connected to the inner cylindrical sleeve.

[0013] As a preferred solution of the utility model, the anti-loosening belt is detachably connected to the trapezoidal hollow block, and the connecting plate is non-detachably connected to the right end of the anti-loosening belt.

[0014] As a preferred solution of the utility model, the plug plate and the connecting plate are non-detachably connected, the connecting groove and the left end of the anti-loosening belt are non-detachably connected, the clamping block and the connecting groove are non-detachably connected, and the plug plate and the clamping block are clamped.

[0015] Beneficial Effects

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. In the utility model, an inner rotor brushless motor is designed, and an inner cylindrical sleeve and a trapezoidal hollow block are sleeved on the outer wall of the brushless motor. The trapezoidal hollow block is used for silencing, the mesh and the mesh plate are used for heat dissipation, and the trapezoidal hollow block is reinforced by an anti-loosening belt to prevent the trapezoidal hollow block from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the inner cylindrical sleeve and the outer cylindrical sleeve of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the inner cylindrical sleeve and the trapezoidal hollow block of the utility model;

[0021] Figure 4 It is a schematic diagram of the anti-loosening belt structure of the utility model.

[0022] In the figure: 1, brushless motor; 2, silencer assembly; 201, inner cylindrical sleeve; 202, empty slot; 203, trapezoidal hollow block; 204, outer cylindrical sleeve; 205, mesh plate; 206, mesh; 207, anti-loosening belt; 208, connecting plate; 209, plug plate; 210, connecting slot; 211, clamping block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0025] like Figure 1-4 As shown, an inner rotor brushless motor comprises a brushless motor 1, and a housing of the brushless motor 1 is provided with a silencer assembly 2;

[0026] Please see attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Figure 4As shown, the silencer assembly 2 includes an inner cylindrical sleeve 201 arranged on the outer shell of the brushless motor 1, an empty groove 202 is left between the outer wall of the inner cylindrical sleeve 201 and the inner wall of the outer cylindrical sleeve 204, a trapezoidal hollow block 203 is arranged around one side of the inner wall of the outer cylindrical sleeve 204 in the empty groove 202, the outer cylindrical sleeve 204 is arranged on the outside of the inner cylindrical sleeve 201, and a mesh plate 205 is arranged on the outer wall of the outer cylindrical sleeve 204 at intervals of two centimeters, a mesh hole 206 is arranged between the two groups of trapezoidal hollow blocks 203 near the outer wall of the inner cylindrical sleeve 201, an anti-loosening belt 207 is arranged around the middle of the outer wall of the trapezoidal hollow block 203, a connecting plate 208 is connected to the right end of the opening of the anti-loosening belt 207, a plug plate 209 is connected to the middle of the left end of the connecting plate 208, a connecting groove 210 is connected to the left end of the opening of the anti-loosening belt 207, a clamping block 211 is arranged at the bottom end of the connecting groove 210, and a group of outer cylindrical Sixteen groups of trapezoidal hollow blocks 203 are arranged on the inner wall of the sleeve 204, four groups of mesh plates 205 are arranged on the outer wall of a group of outer cylindrical sleeves 204, the inner cylindrical sleeve 201 is sleeved with the brushless motor 1, the trapezoidal hollow blocks 203 are bonded with the outer cylindrical sleeve 204, the outer cylindrical sleeve 204 and the inner cylindrical sleeve 201 are detachably connected, the mesh plates 205 and the outer cylindrical sleeve 204 are not detachably connected, the mesh 206 and the inner cylindrical sleeve 201 are not detachably connected, the anti-loosening belt 207 and the trapezoidal hollow blocks 203 are detachably connected, the connecting plate 208 and the right end of the anti-loosening belt 207 are not detachably connected, the plug plate 209 and the connecting plate 208 are not detachably connected, the connecting groove 210 and the left end of the anti-loosening belt 207 are not detachably connected, the clamping block 211 and the connecting groove 210 are not detachably connected, and the plug plate 209 and the clamping block 211 are clamped;

[0027] Among them, one end of the anti-loosening belt 207 is clamped with the inside of the clamping block 211 through the plug plate 209 for fixing, which is convenient for installation and disassembly. It is sleeved with the outer wall of the brushless motor 1 through the inner wall of the inner cylindrical sleeve 201. The sleeve is rotated through the thread of the inner wall of the inner cylindrical sleeve 201 to be sleeved on the outer wall of the brushless motor 1, and the thread of the inner wall of the inner cylindrical sleeve 201 has an anti-slip effect.

[0028] Working process of the utility model: when the inner rotor brushless motor designed by the present scheme is working, the anti-loosening belt 207 is wrapped around the outer wall of the trapezoidal hollow block 203 for a circle, and the plug plate 209 at one end of the anti-loosening belt 207 is inserted into the middle of the block 211 inside the connecting groove 210 for fixing, and the outer wall of the trapezoidal hollow block 203 is adhered to the inner wall of the outer cylindrical sleeve 204 by means of glue, and the other side of each group of trapezoidal hollow blocks 203 is located on both sides of the mesh holes 206 opened in the inner cylindrical sleeve 201, without covering the mesh holes 206 to prevent affecting the heat dissipation effect, and the inner cylindrical sleeve 201 is rotatably sleeved on the outer wall of the brushless motor 1 for use, and the motor is soundproofed by the trapezoidal hollow block 203, and heat is dissipated by the mesh plate 205 and the mesh holes 206. While soundproofing, the heat dissipation effect of the brushless motor 1 will not be affected, which makes it more convenient to use the inner rotor brushless motor.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inner rotor brushless motor, comprising a brushless motor (1), characterized in that: The housing of the brushless motor (1) is provided with a silencer component (2); The silencer assembly (2) comprises an inner cylindrical sleeve (201) arranged on the outer shell of the brushless motor (1), a hollow groove (202) is left between the outer wall of the inner cylindrical sleeve (201) and the inner wall of the outer cylindrical sleeve (204), a trapezoidal hollow block (203) is arranged around one side of the inner wall of the outer cylindrical sleeve (204) in the hollow groove (202), the outer cylindrical sleeve (204) is arranged outside the inner cylindrical sleeve (201), and mesh plates (205) are arranged on the outer wall of the outer cylindrical sleeve (204) at intervals of two centimeters, and the two mesh plates (205) are arranged on the outer wall of the outer cylindrical sleeve (204) at intervals of two centimeters. A mesh (206) is provided between the groups of trapezoidal hollow blocks (203) near the outer wall of the inner cylindrical sleeve (201); an anti-loosening belt (207) is provided around the middle of the outer wall of the trapezoidal hollow block (203); a connecting plate (208) is connected to the right end of the opening of the anti-loosening belt (207); a plug plate (209) is connected to the middle of the left end of the connecting plate (208); a connecting groove (210) is connected to the left end of the opening of the anti-loosening belt (207); and a clamping block (211) is provided at the bottom end of the inner part of the connecting groove (210).

2. The inner rotor brushless motor according to claim 1, characterized in that: Sixteen groups of trapezoidal hollow blocks (203) are arranged on the inner wall of the group of outer cylindrical sleeves (204), and four groups of mesh plates (205) are arranged on the outer wall of the group of outer cylindrical sleeves (204).

3. The inner rotor brushless motor according to claim 2, characterized in that: The inner cylindrical sleeve (201) is sleeved with the brushless motor (1), and the trapezoidal hollow block (203) is bonded with the outer cylindrical sleeve (204).

4. The inner rotor brushless motor according to claim 3, characterized in that: The outer cylindrical sleeve (204) and the inner cylindrical sleeve (201) are detachably connected, the mesh plate (205) and the outer cylindrical sleeve (204) are non-detachably connected, and the mesh (206) and the inner cylindrical sleeve (201) are non-detachably connected.

5. The inner rotor brushless motor according to claim 4, characterized in that: The anti-loosening belt (207) is detachably connected to the trapezoidal hollow block (203), and the connecting plate (208) is non-detachably connected to the right end of the anti-loosening belt (207).

6. The inner rotor brushless motor according to claim 5, characterized in that: The plug plate (209) and the connecting plate (208) are non-detachably connected, the connecting groove (210) and the left end of the anti-loosening belt (207) are non-detachably connected, the clamping block (211) and the connecting groove (210) are non-detachably connected, and the plug plate (209) and the clamping block (211) are clamped.

Images