JP3091827U - Motor muff structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor muff structure in which a muff is stably coupled to a base, a bearing inside the muff can be easily replaced, and a machining process and cost can be reduced. . SOLUTION: The muff 1 has a through hole 11. Fan 2
Has a magnet 21. The magnet 21 has a core shaft 22. An O-shaped ring 23, a rolling bearing 24, and an oilless bearing 25 are fitted in the core shaft 22. Core shaft 22 is annular groove 2
21, and the C-shaped ring 26 is fitted in the annular groove 221. A rolling bearing 24 and an oilless bearing 25 are fitted into the inner peripheral wall of the through hole 11 of the muff 1. A stator assembly 3 and a circuit board 31 are fitted on the outer peripheral edge of the muff 1. A bottom 4 is fitted into the end opposite to the fan 2, and the bottom 4 has a through hole 41 at the center. The muff 1 has a plurality of grooves 12 on the outer peripheral wall at one end. The muff 1 abuts on the inner wall of the through hole 41 of the bottom 4 to stably couple the muff 1 to the bottom 4.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  This invention relates to the structure of the motor muff, and in particular, it can be tightly coupled with the base. Related to the structure of the muff of the motor which can be replaced conveniently and the bearing inside it .

[0002]

[Prior art]

  FIG. 5 and FIG. 6 show the structure of a conventional cooling fan. One rolling bearing 52 and one oilless bearing 53 are fitted on the core shaft 51. One C-type phosphorus The groove 54 is engaged with the bottom end of the core shaft 51 to form a rolling bearing 52 and an oilless bearing. 53 is prevented from coming off, and the rolling bearing 52 and the oilless shaft of the core shaft 51 of the fan 5 are prevented. The receiver 53 is provided by being fitted inside the one muff 6. Solid on the outer edge of the muff 6. The fixed set 7 and the one circuit board 71 are fitted together, and the one end edge 61 of the muff 6 is It is provided by being fitted in the through hole 81 of the bottom table 8. The edge 61 at the one end is A plurality of fixing points 62 for fixing with respect to the base 8 are processed by a press. To be so Then, the muff 6 cannot be separated from the base 8, and the base 8 prevents the fan from being removed. Attach 5 to the intended member to dissipate the heat.

[0003]   The fixing point 62 applies a strong external force to the end edge 61 of the muff 6 to move the end edge 61. Destructive deformation is performed to form fixing points 64 on the back side and front side of the edge 61. Therefore, the muff 6 cannot be repeatedly fitted and provided on the base 8, and the muff and If the base 8 breaks, it must be replaced at the same time. And the end of the muff 6 The fixed point 62 on the back side of the edge 61 includes the rolling bearing 52 and the oilless bearing 5 therein. It is very inconvenient to use because it makes the work of taking out No. 3 difficult.

[0004]   On the other hand, it is necessary to separately process the fixed point 62, that is, 5, rolling bearing 52, oilless bearing 53, stator assembly 7, circuit board 71, and base 8 Since the fixing point 62 is machined after assembling all the components such as Increase the cost to increase the cost.

[0005]

[Problems to be solved by the device]

  In this invention, a plurality of grooves are provided on the outer peripheral wall at one end of the muff, and the cross section of each groove is It has a sawtooth shape, and the tooth tips of the sawteeth are in contact with the inner wall of the base so that the muff and the base are secured. The main purpose is to provide a structure for the motor muff that can be fixedly coupled. To do.

[0006]   This device can be assembled separately because the annular groove can be processed during the process of making a muff. Since it is not necessary to process after finishing, it is possible to reduce the processing steps and reduce the cost. The purpose of the present invention is to provide a structure of a motor muff that can be used.

[0007]

[Means for Solving the Problems]

  Claim 1 of the present application made to achieve the above object, the muff pivotally installs a fan. The fan has a through hole, and the fan is provided with at least a bearing. And the core shaft is provided so as to penetrate through the through hole of the muff, and The periphery is covered by the stator assembly, and the bottom stand is provided at one end of the muff opposite to the fan. One through for fitting and fixing, and for fitting and fixing the muff in the center of the base. In the structure of a motor muff having a hole, the muff is fitted into the base and fixed. A plurality of grooves are annularly provided on the outer peripheral wall at one end to be defined, and the groove has a sawtooth cross section. The tip of the sawtooth-shaped tooth comes into contact with the inner wall of the base to make the muff stable with the base. The gist is that it is a motor muff structure characterized by being coupled.

[0008]   According to claim 2 of the present application, one O-type ring and one rolling shaft are provided on the outer periphery of the core shaft of the fan. The O-ring is fitted with a bridge and one oilless bearing, and is also a C-ring. The rolling bearing and the oilless bearing on the core shaft. The ireless bearing is tightly fitted into the inner peripheral wall of the through hole of the muff, and A motor board according to claim 1, wherein one circuit board is fitted around the periphery. The main point is that the structure is F.

[0009]

[Embodiment of device]

  1 to 3 show the configuration of the embodiment of the present invention. Of this embodiment In the structure of the motor muff, the muff 1 has one through hole 11 for pivotally installing one fan 2. Have. One magnet 21 is provided in a ring inside the fan 2, and the center of the magnet 21 is located at the center of the magnet 21. A single core shaft 22 extending downward is provided. One ring is formed near the bottom end of the core shaft 22. A groove 221 is provided, and one O-shaped ring 23 is provided on the core shaft 22 in order from top to bottom. And one rolling bearing 24 and one oilless bearing 25 are fitted and provided, and the core The C-shaped ring 26 is provided in the annular groove 221 of the shaft 22 so as to roll with the O-shaped ring 23. A bearing 24 and an oilless bearing 25 are positioned on the core shaft 22, and the rolling bearing is provided. 24 and the oilless bearing 25 are tightly fitted to the inner peripheral wall of the through hole 11 of the muff 1. It is provided. One stator assembly 3 and one circuit board 31 are fitted and installed on the outer peripheral edge of the muff 1. The bottom base 4 is fitted and fixed to one end of the muff opposite to the fan 2, A through hole 41 for fitting and fixing the muff is provided at the center of the bottom table 4.

[0010]   As shown in FIG. 4, the outer peripheral wall at one end fitted and fixed to the base 4 of the muff 1 A plurality of grooves 12 are annularly provided in the groove, and the cross section of each groove 12 has a saw-tooth shape. Sawtooth The tooth tips 121 of the bottom base 4 come into contact with the inner wall of the through hole 41 of the bottom base 4 to move the muff 1 to the bottom base 4 Stable bond with.

[0011]   Each groove 12 in the muff 1 can be machined during the process of making the muff 1. It is not necessary to separately process after assembling the fan 2 and the stator assembly 3 and assembling. Since the muff 1 can be fixed to the bottom 4 at the same time, the machining process can be saved. The cost can be reduced.

[0012]   Further, the bottom base 4 is fitted and fixed to the muff 1 by the respective grooves 12 so as to be destructive. Since it is not a fixing method, the base 4 can be fixed by overlapping with the muff. If the base 4 or the muff 1 breaks, you only have to replace the damaged base 4 or the muff 1. However, it is not necessary to replace both at the same time.

[0013]   The grooves 12 are provided on the outer peripheral wall of the muff 1, and the back wall of the through hole 11 is Since it is still smooth, the rolling bearing 24 and the oilless bearing 25 are required. It is extremely convenient to use because it can be taken out and replaced.

[0014]

[Effect of device]

  This device has the following effects.   (B) Since the annular groove can be processed during the process of making a muff, it can be added after it is assembled separately. It is not necessary to carry out the work, and it is possible to reduce the processing steps and reduce the cost.

[0015]   (B) Since the bottom stand is fitted and fixed with the muffs by each groove, it is not a destructive fixing method, The base can be attached to the muff in duplicate and fixed, and damaged if the base or muff breaks Only the base or muff needs to be replaced, not both at the same time.

[0016]   (C) Each groove is provided on the outer peripheral wall of the muff, and the back wall of the through hole of the muff is also smooth. The rolling bearings and oilless bearings can be taken out and replaced if necessary. Because it is possible, it is extremely convenient to use.

[Brief description of drawings]

FIG. 1 is a perspective view showing a muff of a motor according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a muff of a motor according to an embodiment of the present invention.

FIG. 3 is a sectional view of an assembled state in which a motor muff according to an embodiment of the present invention is applied to a cooling fan.

FIG. 4 is a cross-sectional view showing a state in which a muff of a motor according to an embodiment of the present invention is fitted and fixed to a base.

FIG. 5 is a cross-sectional view showing a conventional cooling fan.

FIG. 6 is a bottom view showing a conventional cooling fan.

[Explanation of symbols]

1 muff 2 fans 3 Stator assembly 4 bottom stand 5 fans 6 muffs 7 Stator assembly 8 base 11 through holes 12 grooves 21 magnet 22 core shaft 23 O type ring 24 Rolling bearing 25 oilless bearing 26 C type ring 31 circuit board 41 through hole 51 core shaft 52 Rolling bearing 53 Oilless bearing 54 C type ring 61 Edge 62 fixed point 71 circuit board 81 through hole 121 tooth tip 221 annular groove

Claims (2)

[Scope of utility model registration request] 1. The muff has a through hole for pivotally installing a fan, and the fan has a core shaft into which at least a bearing is fitted, the core shaft penetrating into the through hole of the muff. The outer peripheral edge of the muff is covered by a stator assembly, a bottom stand is fitted and fixed to one end of the muff opposite to the fan, and the muff is fitted and fixed in the center of the bottom stand. In a structure of a motor muff having a through hole for, a plurality of grooves are annularly provided in an outer peripheral wall of one end where the muff is fitted and fixed to the bottom stand, and the cross section of the groove is a sawtooth shape. The structure of the motor muff is characterized in that the tips of the teeth of the saw-tooth shape are brought into contact with the inner wall of the base so as to stably couple the muff with the base. 2. An O-shaped ring, a rolling bearing and an oilless bearing are fitted around the outer circumference of the core shaft of the fan, and C
The O-shaped ring, the rolling bearing, and the oilless bearing are localized on the core shaft by a mold ring, and the rolling bearing and the oilless bearing are tightly fitted to the inner peripheral wall of the through hole of the muff, and The motor muff structure according to claim 1, wherein a circuit board is fitted to the outer peripheral edge.