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CN-224204896-U - Brushless external rotor motor

CN224204896UCN 224204896 UCN224204896 UCN 224204896UCN-224204896-U

Abstract

The utility model discloses a brushless outer rotor motor, belonging to the field of driving devices and solving the problem of easy damage of a driving shaft in the prior art, the technical proposal for solving the problem mainly comprises a body and a supporting seat, wherein the body is rotationally arranged on the supporting seat and comprises the driving shaft, a rotor shell connected with the driving shaft and a stator positioned between the driving shaft and the rotor shell, be equipped with first damping piece on the rotor housing, be equipped with the second damping piece of detachable connection on the supporting seat, first damping piece can be along with rotor housing synchronous rotation, and in the rotor housing rotates the in-process, first damping piece can with install on the supporting seat second damping piece friction is in order to produce damping force. The utility model is mainly used for guaranteeing the self-locking performance of the motor and guaranteeing the service life of the driving shaft.

Inventors

  • GUO FEIHU

Assignees

  • 深圳市昱森机电有限公司

Dates

Publication Date
20260505
Application Date
20250424

Claims (10)

  1. 1. The utility model provides a brushless external rotor motor, its characterized in that includes body and supporting seat, the body rotates and sets up on the supporting seat, the body includes the drive shaft, connects in the rotor shell of drive shaft and is located the stator between drive shaft and the rotor shell, be equipped with first damping piece on the rotor shell, be equipped with the second damping piece of detachable connection on the supporting seat, first damping piece can with rotor shell synchronous rotation, and in the rotor shell rotates the in-process, first damping piece can with install on the supporting seat the second damping piece rubs in order to produce the damping force.
  2. 2. The brushless external rotor motor of claim 1, wherein the second damping member is telescopically disposed on the support base to adjust a spacing between the second damping member and the first damping member.
  3. 3. The brushless outer rotor motor of claim 2, wherein the support base is provided with a through hole penetrating the support base, and the second damping member is close to or far from the first damping member through the through hole.
  4. 4. The brushless outer rotor motor according to claim 3, wherein the second damping member comprises a damping block and a support column for supporting the damping block, the support column is movably arranged on the damping block through a threaded matching structure, or the second damping member comprises a damping block and a support column for supporting the damping block, the support column is provided with at least two support columns which are connected with each other in a threaded manner so as to adjust the height of the damping block, or the second damping member comprises a positioning pin, a damping block and a support column for supporting the damping block, the support column is provided with at least two support columns, the at least two support columns are mutually sleeved, a plurality of positioning holes are formed in the support column, and the positioning holes of the positioning pin inserted into the two support columns are used for fixing the two support columns.
  5. 5. The brushless outer rotor motor of claim 4, wherein the support base further comprises support legs positioned at both sides of the support column, and an operation space for operating the support column is formed between the support legs.
  6. 6. The brushless external rotor motor of claim 1, wherein the second damping member is movably disposed on the support base by a screw-fit structure.
  7. 7. The brushless outer rotor motor of claim 1, wherein the rotor housing comprises a rigid skeleton, wherein the rigid skeleton is surrounded by an outwardly protruding plastic member or flexible encapsulation, and wherein the plastic member or flexible encapsulation forms the first damping member.
  8. 8. The brushless outer rotor motor of claim 7, wherein the first damping member is disposed at an intermediate position of the rigid frame, and the second damping member is disposed at an intermediate position of the first damping member.
  9. 9. The brushless outer rotor motor of claim 1, wherein the first damping member comprises a damping ring provided on an outer side of the rotor housing, and the second damping member is provided with a circular or arc-shaped damping surface adapted to the damping ring.
  10. 10. The brushless external rotor motor of claim 9, wherein the second damping members are provided with at least two, the roughness of the damping surfaces of the at least two second damping members is different, and the at least two second damping members are alternatively mounted on the support base.

Description

Brushless external rotor motor Technical Field The utility model relates to the field of driving devices, in particular to a brushless outer rotor motor. Background The brushless outer rotor motor comprises a driving shaft, a rotor shell connected with the driving shaft and a stator positioned between the driving shaft and the rotor shell, and the motor needs to have a braking self-locking function for the occasion of rapid braking or sliding prevention, for example, patent CN212412959U discloses that the friction piece matched with the driving shaft and an elastic piece used for keeping the friction piece to be in contact with the driving shaft are included, the friction force of the friction piece and the driving shaft is larger than or equal to the torsion force of the driving shaft after the motor body is powered off, but the driving shaft is always in friction contact with the friction piece, the driving shaft is easy to wear after long-term use, the driving shaft is difficult to replace, and the concentricity of the rotation of the damaged driving shaft can be damaged, so that the motor vibrates in the running process. Disclosure of utility model The utility model aims to provide a brushless outer rotor motor, which solves the problem that a driving shaft is easy to damage in the prior art, ensures the self-locking performance of the motor and simultaneously ensures the service life of the driving shaft. In order to achieve the aim, the brushless outer rotor motor comprises a body and a supporting seat, wherein the body is rotatably arranged on the supporting seat, the body comprises a driving shaft, a rotor shell connected with the driving shaft and a stator positioned between the driving shaft and the rotor shell, a first damping piece is arranged on the rotor shell, a second damping piece which is detachably connected is arranged on the supporting seat, the first damping piece can synchronously rotate along with the rotor shell, and in the rotating process of the rotor shell, the first damping piece can rub with the second damping piece arranged on the supporting seat to generate damping force. After the technical scheme is adopted, the motor has the advantages that damping force is generated through friction between the first damping piece arranged on the rotor shell and the second damping piece arranged on the supporting seat, direct contact between the driving shaft and the friction piece is avoided as much as possible, so that abrasion of the driving shaft is effectively reduced, the service life of the driving shaft is guaranteed, and secondly, the second damping piece arranged on the supporting seat is detachably connected, if the second damping piece is worn or damaged, the motor is relatively convenient to replace, the maintenance cost and difficulty of the motor are reduced, and the second damping piece can be selectively installed or detached, so that enough braking force can be provided when needed to ensure safety or meet specific operation requirements, and unnecessary friction loss can be reduced when not needed. Further, the second damping piece is telescopically arranged on the supporting seat so as to adjust the interval between the second damping piece and the first damping piece. By adopting the technical scheme, the friction force generated between the second damping piece and the first damping piece can be flexibly controlled by adjusting the distance between the second damping piece and the first damping piece without replacing parts, so that the damping force can be accurately adjusted. The motor can dynamically adjust the braking force according to different working requirements, and the adaptability and the flexibility of the system are improved. The contact and wear between the second damping member and the first damping member can be reduced by increasing the spacing therebetween without requiring high damping forces, contributing to an extended service life of the associated components. Further, a through hole penetrating through the supporting seat is formed in the supporting seat, and the second damping piece is close to or far away from the first damping piece through the through hole. By adopting the technical scheme, the second damping piece moves through the through hole, the through hole can play a certain guiding role on the movement of the second damping piece, and the second damping piece can be ensured to accurately move along the preset direction when being close to or far away from the first damping piece, so that the precision of the interval adjustment between the second damping piece and the first damping piece is ensured. Further, the second damping piece comprises a damping block and support columns used for supporting the damping block, the support columns are movably arranged on the damping block through a threaded matching structure, or the second damping piece comprises the damping block and support columns used for supporting the damping block, the