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CN-224233508-U - Bonding tool for multistage magnetic ring

CN224233508UCN 224233508 UCN224233508 UCN 224233508UCN-224233508-U

Abstract

The utility model discloses an adhesive fixture for a multistage magnetic ring, which relates to the technical field of auxiliary adhesive fixtures for magnetic rings and comprises a motor shaft, wherein at least two annular magnets are sleeved and adhered on the motor shaft, two adjacent annular magnets are closely arranged together, a starting end and a tail end are arranged on the motor shaft, the length from the starting end to the tail end is equal to the total length of all annular magnets closely arranged together, an auxiliary fixing piece is arranged on the outer side of the tail end and detachably connected to the motor shaft, and when the auxiliary fixing piece is locked, one end, close to the annular magnets, of the auxiliary fixing piece is abutted against the end face of the outermost annular magnet.

Inventors

  • LU GUOYOU

Assignees

  • 楚瑞智能科技(苏州)有限公司

Dates

Publication Date
20260512
Application Date
20250603

Claims (7)

  1. 1. The bonding tool for the multistage magnetic ring is characterized by comprising a motor shaft (1), wherein at least two annular magnets (2) are sleeved and bonded on the motor shaft (1), two adjacent annular magnets (2) are closely arranged together, a starting end (11) and a tail end (12) are arranged on the motor shaft (1), the length from the starting end (11) to the tail end (12) is equal to the total length of all the annular magnets (2) closely arranged together, an auxiliary fixing piece is arranged on the outer side of the tail end (12), the auxiliary fixing piece is detachably connected to the motor shaft (1), and when the auxiliary fixing piece is locked, one end, close to the annular magnets (2), of the auxiliary fixing piece abuts against the end face of the outermost annular magnet (2).
  2. 2. The bonding tool of the multistage magnetic ring according to claim 1, wherein the auxiliary fixing piece is a fixing nut (3), and an external thread (4) matched with an internal thread of the fixing nut (3) is arranged on the outer side of the tail end (12).
  3. 3. The bonding tool of the multistage magnetic ring according to claim 2, wherein the external threads (4) and the internal threads of the fixing nut (3) are fine threads.
  4. 4. The bonding tool of the multistage magnetic ring according to claim 2, wherein a clearance groove (5) is formed in the inner wall of the fixing nut (3) close to one end of the annular magnet (2).
  5. 5. The bonding tool for the multistage magnetic ring according to claim 4, wherein the depth of the void-avoidance groove (5) is 1-3mm.
  6. 6. The bonding tool of the multistage magnetic ring according to claim 1, wherein the auxiliary fixing piece is a plug pin (6), and a jack (7) matched with the plug pin (6) is arranged on the outer side of the tail end (12).
  7. 7. The bonding tool of the multistage magnetic ring according to claim 6, wherein the plug pin (6) is a conical plug pin.

Description

Bonding tool for multistage magnetic ring Technical Field The utility model belongs to the technical field of auxiliary bonding tools for magnetic rings, and particularly relates to a simple and efficient multistage magnetic ring bonding tool. Background The splicing structure of the plurality of bending magnets of the traditional miniature motor rotor leads to poor magnetic field uniformity, complex assembly and low heat dissipation efficiency. In the process of designing the miniature motor, the permanent magnet of the motor rotor structure is redesigned in consideration of the optimization of motor performance, and the splicing of a plurality of bending magnets is changed into an integral ring-shaped magnet, so that the magnets of the structure are axially connected in series, and under the condition that the axial fixation of the glue curing stage is difficult due to the repulsive force of the same magnetic pole when the number of the magnets is more than or equal to two, the stable fixation of the existing fixture is difficult to realize, and the bonding offset or the glue layer is easy to be uneven. A simple and efficient tool is designed for assisting the bonding and solidification of the magnet and the glue of the motor shaft. Disclosure of utility model The utility model aims to provide a bonding tool for multistage magnetic rings, which is used for bonding and curing glue of an auxiliary magnet and a motor shaft through the design of an auxiliary fixing piece, and solves the problems that two or more magnetic rings are difficult to realize stable fixation and are easy to cause bonding offset or uneven glue layers in the prior art. In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a multistage magnetic ring's bonding frock, includes the motor shaft, the cover is established on the motor shaft and is glued there are two at least annular magnet, two adjacent annular magnet closely arrange together, be provided with beginning and tail end on the motor shaft, the length of beginning to the tail end equals the total length that all annular magnet closely arrange together, the tail end outside is provided with auxiliary fixing piece, auxiliary fixing piece detachable connection is on the motor shaft, and when auxiliary fixing piece locking, the one end that auxiliary fixing piece is close to annular magnet supports on the annular magnet terminal surface in the outside. Optionally, the auxiliary fixing piece is a fixing nut, and an external thread matched with the internal thread of the fixing nut is arranged on the outer side of the tail end. Optionally, the external thread and the internal thread of the fixing nut are fine threads. Optionally, a clearance groove is formed in the inner wall, close to one end of the annular magnet, of the fixing nut. Optionally, the depth of the empty-avoiding groove is 1-3mm. Optionally, the auxiliary fixing piece is a bolt, and a jack matched with the bolt is arranged on the outer side of the tail end. Optionally, the bolt is a taper bolt. The bonding tool for the multistage magnetic ring has the beneficial effects that the auxiliary fixing piece is designed to assist the glue of the magnet and the motor shaft to bond and solidify, so that the problems that two or more magnetic rings are difficult to realize stable fixation, the bonding offset or the glue layer is uneven in the prior art are solved, and the whole structure is simple and the operation is easy. Drawings Fig. 1 is a schematic diagram illustrating a disassembly of an adhesion tool for a multi-stage magnetic ring in embodiment 1; Fig. 2 is a sectional view of the fixing nut in embodiment 1; Fig. 3 is a schematic diagram illustrating a disassembly of an adhesion tool for a multi-stage magnetic ring in embodiment 2. In the figure, 1, a motor shaft, 11, a start end, 12, a tail end, 2, a ring magnet, 3, a fixing nut, 4, external threads, 5, a clearance groove, 6, a bolt, 7 and a jack. Detailed Description In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the present utility model will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the drawings is only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art. It should be noted that the description of these examples is for aiding in understanding the present utility model, but is not intended to limit the present utility model. In the description of the present invention, it should be understood that the azimuth terms such as "front, rear, upper, lower, left, right", "horizontal, vertical, horizontal", and "top, bottom", etc., are generally based on the a