CN103904808B - Motor with a stator having a stator core - Google Patents

Abstract

A motor includes a base, a stator and a rotor. The base is provided with a shaft tube, the shaft tube is provided with an opening end, the opening end is provided with a hot melting positioning part, a shaft tube built-in assembly is arranged in the shaft tube, and the shaft tube built-in assembly is provided with a sunken part facing to the opening end; the stator is combined with the shaft tube; the rotor is combined with the shaft tube inside installation component of the base; therefore, even if the height of the hot-melting positioning part in the axial direction is equal to or lower than that of the shaft tube interior assembly, the hot-melting positioning part can still be positioned in the sunken part of the shaft tube interior assembly by utilizing the design of the sunken part, so that the shaft tube interior assembly is effectively prevented from being separated from the shaft tube.

Description

motor

technical field

The invention relates to a motor, in particular to a motor which can use the hot-melt positioning part of the shaft tube to press against the inner assembly of the positioning shaft tube.

Background technique

Please refer to Fig. 1, the common existing motor 8 on the market generally has a base 81, and the base 81 is provided with a shaft tube 82, and the shaft tube 82 is equipped with components such as bearings 83 and supporting members 84 ( Hereinafter collectively referred to as "shaft tube internal components"), wherein the bearing 83 can be pivotally connected to a rotor 85; and the shaft tube 82 is externally provided with a stator 86 for driving the rotation of the rotor 85, and the stator 86 is provided with a limit A piece 861, the limiting piece 861 is used to press against the "shaft tube inner assembly".

However, the stator 86 of the above-mentioned existing motor 8 must additionally form the stopper 861, so as to achieve the function of pressing against and positioning the "shaft tube internal assembly", which causes the structure of the stator 86 to be too complicated, resulting in the manufacture of the existing motor 8. The cost increases; moreover, when the existing motor 8 is assembled, the stopper 861 of the stator 86 is also prone to cracks or cracks during the process of pressing the stopper 861 of the stator 86 against the "shaft tube interior assembly". Breakage and other situations, resulting in poor assembly convenience and poor positioning effect.

For this reason, please refer to FIG. 2, which is the utility model patent case of "Motor" in China Authorized Announcement No. CN201120131078.9. The utility model patent discloses another existing motor 9, the motor 9 has a base 91, the base 91 is provided with a shaft tube 92, and a shaft tube built-in component 921 is arranged inside the shaft tube 92; and the shaft A thermoplastic positioning portion 922 is disposed on the top of the tube 92 , and the thermoplastic positioning portion 922 is used to press against and position the shaft tube internal component 921 .

However, as shown in FIG. 3 , the molding method of the thermoplastic positioning part 922 of the above-mentioned conventional motor 9 uses a heating fixture 93 to force the top of the shaft tube 92 to melt and deform, and the top of the shaft tube 92 is cooled and solidified. The thermoplastic positioning portion 922 may be molded. Also, in order to ensure that the thermoplastic positioning portion 922 can press against the shaft tube inner assembly 921, the top end of the shaft tube 92 must be higher than the shaft tube inner assembly 921 in the axial direction; in other words, if the top end of the shaft tube 92 is at When the height in the axial direction is equal to or lower than the shaft tube inner component 921 (as shown in FIG. 4 ), the thermoplastic positioning part 922 cannot be formed on the top end of the shaft tube 92 by using the heating jig 93 to press against The shaft tube built-in component 921; therefore, when the existing motor 9 is actually installed and used, the selection of the shaft tube 92 and the shaft tube built-in component 921 is easily subject to many restrictions, and the convenience of use is not good.

Contents of the invention

The main purpose of the present invention is to provide a motor, which is based on the condition that the height of the top end of the shaft tube in the axial direction is equal to or lower than the internal components of the shaft tube, and the hot-melt positioning part can still be used to press against the internal components of the shaft tube .

In order to achieve the aforementioned object of the invention, the motor of the present invention at least includes a base, a stator and a rotor. The base is provided with a shaft tube, the shaft tube has an open end, the open end is provided with a hot-melt positioning part, the shaft tube internal assembly is arranged in the shaft tube, and the shaft tube internal assembly is provided with a concave part facing the open end, The recess is adjacent to the inner peripheral wall of the shaft tube; the stator is combined with the shaft tube of the base; and the rotor is rotatably combined with the shaft tube inner assembly of the base; wherein the hot-melt positioning part is in the axial direction The height is equal to or lower than the above-mentioned shaft tube internal assembly, and the hot-melt positioning part is positioned in the concave part of the shaft tube internal assembly.

The shaft tube also has a closed end, the closed end is opposite to the above-mentioned open end, the shaft tube internal assembly has a first end and a second end opposite, the first end faces the opening of the shaft tube end, the second end is facing the closed end of the shaft tube, and the above-mentioned concave part is arranged at the first end.

The shaft tube inner assembly includes a bearing adjacent to the open end of the shaft tube, the rotor is rotatably coupled to the bearing, and the end face of the bearing facing the open end is a first end of the shaft tube inner assembly. Alternatively, the inner assembly of the shaft tube includes a bearing and a positioning sleeve, the positioning sleeve is adjacent to the open end of the shaft tube, the bearing is located between the positioning sleeve and the closed end of the shaft tube, and the rotor is rotatably combined with the shaft tube. As for the bearing, the end surface of the positioning sleeve facing the open end is the first end of the shaft tube inner assembly. Alternatively, the shaft tube inner assembly includes a bearing adjacent the open end of the shaft tube, the rotor rotatably coupled to the bearing, a retainer and a wear plate adjacent the closed end of the shaft tube , the fastening piece is located between the bearing and the wear-resistant sheet, and the end surface of the bearing facing the open end is the first end of the shaft tube internal component. Alternatively, the inner assembly of the shaft tube includes a bearing, a retaining piece, a wear plate and a positioning sleeve, the positioning sleeve is adjacent to the open end of the shaft tube, the wear plate is adjacent to the closed end of the shaft tube, the bearing and The fastening piece is located between the positioning sleeve and the wear plate, the positioning sleeve presses against the bearing, the rotor is rotatably coupled with the bearing, and the end surface of the positioning sleeve facing the open end is the first part of the inner assembly of the shaft tube one end.

The end surface of the bearing facing the closed end is further provided with a recessed portion.

The rotor is provided with a central shaft, which can be rotatably combined with the bearing of the above-mentioned shaft tube internal assembly, and the outer peripheral wall of the central shaft is provided with a buckle groove, and the buckle of the shaft tube internal assembly is buckled on The buckle slot.

The opening end of the shaft tube forms a minimum inner diameter with the above-mentioned hot-melt positioning portion, and the minimum inner diameter is smaller than the maximum outer diameter of the shaft tube internal assembly.

The hot-melt positioning part of the shaft tube is provided with two radially expanding flanges respectively extending outward and inward in the radial direction, wherein one radially expanding flange is positioned in the concave part of the shaft tube internal assembly, and the other is radially expanding. Position the above mentioned stator towards the expansion flange.

The motor of the present invention uses the design of the recessed part of the inner assembly of the shaft tube, even if the height of the top end of the shaft tube in the axial direction is equal to or lower than that of the inner assembly of the shaft tube, it can still ensure that the hot-melt positioning part presses against and positions the shaft Components are installed in the tube to achieve the effect of improving the convenience of use.

Description of drawings

Figure 1: An assembled sectional view of the first conventional motor.

Fig. 2: An assembled sectional view of the second conventional motor.

Figure 3: Schematic diagram of the second type of conventional motor molded thermoplastic positioning part.

Figure 4: A schematic diagram of the second type of existing motor that cannot form a thermoplastic positioning part.

Fig. 5: An assembled sectional view of the first preferred embodiment of the motor of the present invention.

Fig. 6: An assembled sectional view of the second preferred embodiment of the motor of the present invention.

Fig. 7: An assembled sectional view of the third preferred embodiment of the motor of the present invention.

Fig. 8: A combined sectional view of the fourth preferred embodiment of the motor of the present invention.

Fig. 9: A schematic diagram of the motor of the present invention before forming a hot-melt positioning part.

Fig. 10: A schematic diagram of the motor of the present invention after the hot-melt positioning part is formed.

[Description of main component symbols]

〔this invention〕

1 base

11 Shaft tube 111 Open end

112 Closed end 12 Hot melt positioning part

121 Radial Expansion Flange 13 Axis Tube Inner Assembly

13a First end 13b Second end

13c Recess 131 Bearing

132 Buckle 133 Wear plate

134 positioning sleeve

2 stator

21 Silicon steel sheet group 22 Insulation sleeve group

23 Coil Sets

3 rotors

31 Center shaft 311 Buckle groove

4 heating fixture

D1 Minimum inside diameter D2 Maximum outside diameter

〔current technology〕

8 motors

81 Base 82 Shaft tube

83 Bearing 84 Support member

85 Rotor 86 Stator

861 limit piece

9 motor

91 Base 92 Shaft tube

921 Shaft tube inner assembly 922 Thermoplastic positioning part

93 Heat fixture.

detailed description

In order to make the above-mentioned and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are specifically cited below, together with the accompanying drawings, as follows:

Referring to FIG. 5 , the motor of the preferred embodiment of the present invention at least includes a base 1 , a stator 2 and a rotor 3 . The base 1 can be combined with the stator 2 , the rotor 3 is rotatably combined with the base 1 , and the stator 2 is used to drive the rotor 3 to rotate.

The base 1 is provided with a hollow shaft tube 11, the shaft tube 11 has an opposite open end 111 and a closed end 112; referring to the drawing direction of Figure 5, the open end 111 is located at the top of the shaft tube 11, The closed end 112 is located at the bottom of the shaft tube 11, wherein the open end 111 of the shaft tube 11 is provided with a hot-melt positioning part 12; moreover, a shaft tube internal assembly 13 is arranged inside the shaft tube 11, and the shaft tube internal assembly 13 It is a variety of related components that can be installed inside the shaft tube 11 and provide different functions (such as bearings, positioning sleeves, wear-resistant sheets or fasteners, etc., at least one bearing is included, and the positioning sleeve, wear-resistant sheets and Components such as buckles can be omitted according to actual needs, which can be understood by those skilled in the art).

The shaft tube inner component 13 has a first end portion 13 a and a second end portion 13 b opposite to each other. Wherein the first end 13a faces the open end 111 of the shaft tube 11, and the second end 13b faces the closed end 112 of the shaft tube 11; and the first end 13a is provided with a recessed portion 13c, the recessed portion 13c is adjacent to the inner peripheral wall of the shaft tube 11, the height of the hot-melt positioning part 12 of the shaft tube 11 in the axial direction is equal to or lower than the first end 13a of the shaft tube inner assembly 13, the hot-melt positioning part 12 protrudes into the recessed part 13c positioned in the shaft tube inner assembly 13; in a preferred embodiment of the present invention, the open end 111 of the shaft tube 11 can form a minimum inner diameter D1 by means of the hot-melt positioning part 12, and the minimum inner diameter D1 Smaller than the maximum outer diameter D2 of the shaft tube inner component 13 , the open end 111 of the shaft tube 11 forms a reduced diameter structure to prevent the shaft tube inner component 13 from falling off from the shaft tube 11 .

The stator 2 is combined with the outer peripheral wall of the shaft tube 11 of the base 1 , wherein the stator 2 has various structural designs capable of driving the rotor 3 to rotate. In this embodiment, the stator 2 includes a silicon steel sheet group 21, an insulating sleeve group 22 and a coil group 23; the silicon steel sheet group 21 and the insulating sleeve group 22 are stacked and combined, and the coil group 23 is wound on the insulating The intended location of the set 22.

The rotor 3 is provided with a central shaft 31, and the central shaft 3 is rotatably combined with the shaft tube inner assembly 13 of the base 1; and, in the embodiment shown in FIG. 5, the outer peripheral wall of the central shaft 31 can be set There is a buckle groove 311. The shaft tube inner assembly 13 includes a bearing 131 and a buckle 132. The central shaft 31 is rotatably combined with the bearing 131. The buckle 132 is buckled in the buckle groove 311 of the central shaft 31. To prevent the rotor 3 from falling off from the shaft tube 11. In addition, the stator 2 can generate an alternating magnetic field to drive the rotor 3 to rotate (the detailed structural composition and driving method of the stator and rotor of the motor can be understood by those skilled in the art and will not be described in detail).

Based on the above technical concept, the shaft tube inner assembly 13 includes at least a bearing, and can also be arbitrarily matched with at least one or a combination of components such as positioning sleeves, wear-resistant plates, or fasteners. Therefore, the recessed part 13c can be According to actual use requirements, it is arranged on bearings, positioning sleeves or other components suitable for being located at the open end 111 of the shaft tube 11; and the number of the recessed part 13c can also be one or several depending on the location of the installation, and The heat-melt positioning portion 12 can be matched and pressed against the stator at the same time. Accordingly, the motor of the present invention can be roughly further divided into the following several preferred implementation modes:

In the first preferred embodiment as shown in FIG. 5 , the above-mentioned shaft tube internal assembly 13 includes a bearing 131, a fastening member 132 and a wear-resistant plate 133, wherein the bearing 131 is adjacent to the open end 111 of the above-mentioned shaft tube 11 , the wear-resistant sheet 133 is adjacent to the closed end 112 of the shaft tube 11, and the fastening member 132 is located between the bearing 131 and the wear-resistant sheet 133; thereby, the end surface of the bearing 131 facing the open end 111 is the The first end 13a of the shaft tube inner assembly 13, the end surface of the wear-resistant sheet 133 facing the closed end 112 is the second end 13b of the shaft tube inner assembly 13, wherein the bearing 131 faces to the open end 111 The end surface is provided with a concave portion 13c adjacent to the inner peripheral wall of the shaft tube 11, so that the above-mentioned hot-melt positioning portion 12 can extend into the concave portion 13c formed by the bearing 131, so as to effectively prevent the bearing 131 and the retaining member 132 from And the wear plate 133 is released from the shaft tube 11.

In the second preferred embodiment shown in Figure 6, the above-mentioned shaft tube inner assembly 13 includes a bearing 131, a buckle 132, a wear plate 133 and a positioning sleeve 134, wherein the positioning sleeve 134 is adjacent to the above-mentioned shaft The open end 111 of the tube 11, the wear-resistant plate 133 is adjacent to the closed end 112 of the shaft tube 11, the bearing 131 and the fastening member 132 are located between the positioning sleeve 134 and the wear-resistant plate 133, and the positioning sleeve 134 is used To press against the bearing 131, so that the shaft tube inner components 13 have a better combination effect; thereby, the end surface of the positioning sleeve 134 facing the open end 111 is the first end of the shaft tube inner component 13 part 13a, the end surface of the wear plate 133 facing the closed end 112 is the second end 13b of the shaft tube inner assembly 13, wherein the end surface of the positioning sleeve 134 facing the open end 111 is provided adjacent to the shaft tube The concave part 13c of the inner peripheral wall of 11 is used for the above-mentioned hot-melt positioning part 12 to extend into the concave part 13c formed in the positioning sleeve 134, so as to effectively prevent the bearing 131, the buckling part 132, the wear-resistant plate 133 and the positioning The sleeve 134 is disengaged from the shaft tube 11 .

In the third preferred embodiment shown in FIG. 7, when the shaft tube inner assembly 13 includes the bearing 131, and the end surface of the bearing 131 facing the open end 111 of the shaft tube 11 is the shaft tube inner assembly 13 When the first end 13a of the bearing 131 is provided with a concave portion 13c on the end surface facing the open end 111, the bearing 131 can also be provided with another concave portion on the end surface facing the closed end 112 at the same time. 13c, the recessed portion 13c is also adjacent to the inner peripheral wall of the shaft tube 11; thereby, when the bearing 131 is assembled inside the shaft tube 11, the assembly direction of the bearing 131 need not be considered to effectively improve the assembly convenience.

As shown in the fourth preferred embodiment in FIG. 8, the hot-melt positioning portion 12 of the above-mentioned shaft tube 11 can be provided with two opposite radially expanding flanges 121 respectively extending outward and inward in the radial direction of the shaft tube 11, One of the radial expansion flanges 121 protrudes into the recessed portion 13c positioned at the shaft tube internal assembly 13, and the other radial expansion flange 121 is used to position the above stator 2, so as to avoid the shaft tube internal assembly 13 at the same time. And the function that the stator 2 comes off from the shaft tube 11.

With the help of the structural design of the above-mentioned motor of the present invention, as shown in Figures 9 and 10, the motor of the present invention uses the recessed part 13c of the above-mentioned shaft tube inner assembly 13, even if the top of the above-mentioned shaft tube 11 (the part where the hot-melt positioning part 12 is scheduled to be formed) The height in the axial direction is equal to or lower than the first end 13a of the shaft tube inner assembly 13, but since the shaft tube inner assembly 13 is provided with the recessed portion 13c, when a heating jig 4 is used to press against the When the heat-melt positioning part 12 is used, the heating jig 4 can still be pressed against the heat-melt positioning part 12 to bend and deform toward the direction of the recessed part 13c, so that the opening end 111 of the shaft tube 11 forms a diameter-reducing structure to ensure the heat. The melting positioning part 12 extends into and is positioned in the recessed part 13c, so as to effectively prevent the shaft tube internal component 13 from falling off from the shaft tube 11.

With the help of the structural design of the motor of the present invention, the motor of the present invention can still use the hot-melt positioning part 12 to press even if the height of the top end of the shaft tube 11 in the axial direction is equal to or lower than the shaft tube inner assembly 13. Therefore, when the motor of the present invention is actually installed and used, the selection of the size of the shaft tube 11 and the shaft tube inner component 13 is less likely to be restricted, so as to achieve the effect of improving the convenience of use.

The above is only a preferred embodiment of the present invention, and should not limit the implementation scope of the present invention; therefore, all simple equivalent changes and modifications made according to the patent scope of the present invention and the contents of the creation instructions, All should still belong to the scope that the patent of the present invention covers.

Claims (11)

1. A motor, characterized in that, comprising: A base, provided with a shaft tube, the shaft tube has an open end, the open end is provided with a hot-melt positioning part, the shaft tube internal assembly is arranged in the shaft tube, and the shaft tube internal assembly is provided with a concave part facing the open end , the recess is adjacent to the inner peripheral wall of the shaft tube; a stator coupled to the shaft tube of said base; and a rotor rotatably coupled to the shaft tube inner assembly of said base; Wherein the height of the heat-melt positioning part in the axial direction is equal to or lower than the shaft tube internal assembly, and the heat-melt positioning part is positioned in the concave part of the shaft tube internal assembly. 2. The motor according to claim 1, wherein the shaft tube further has a closed end, the closed end is opposite to the open end, and the shaft tube internal assembly has a first opposite end and a second second end. end portion, the first end portion faces the open end of the shaft tube, the second end portion faces the closed end of the shaft tube, and the above-mentioned concave portion is provided at the first end portion. 3. The motor of claim 2, wherein said shaft tube inner assembly includes a bearing adjacent the open end of said shaft tube, said rotor rotatably coupled to said bearing, said bearing facing toward said open end The end face is the first end of the shaft tube inner assembly. 4. The motor according to claim 3, characterized in that, the end surface of the bearing facing the closed end is further provided with a recessed portion. 5. The motor according to claim 2, wherein said shaft tube inner assembly comprises a bearing and a positioning sleeve, said positioning sleeve is adjacent to the open end of said shaft tube, and said bearing is located between said positioning sleeve and said shaft tube Between the closed ends, the above-mentioned rotor is rotatably coupled with the bearing, and the end surface of the positioning sleeve facing the open end is the first end of the shaft tube inner assembly. 6. The motor according to claim 2, wherein said shaft tube inner assembly comprises a bearing, a retainer and a wear plate, said bearing is adjacent to the open end of said shaft tube, said rotor is rotatably coupled The bearing, the wear-resistant sheet is adjacent to the closed end of the shaft tube, the fastening member is located between the bearing and the wear-resistant sheet, and the end surface of the bearing facing the open end is the first end of the shaft tube internal assembly. 7. The motor as claimed in claim 6, characterized in that, the end surface of the bearing facing the closed end is further provided with a recessed portion. 8. The motor as claimed in claim 2, wherein said shaft tube inner assembly comprises a bearing, a fastening member, a wear plate and a positioning sleeve, and said positioning sleeve is adjacent to the open end of said shaft tube, said The wear-resistant sheet is adjacent to the closed end of the above-mentioned shaft tube, the bearing and the fastening member are located between the positioning sleeve and the wear-resistant sheet, the positioning sleeve is pressed against the bearing, the above-mentioned rotor is rotatably combined with the bearing, and the positioning sleeve The end surface facing the open end is the first end of the shaft tube inner assembly. 9. The motor according to claim 6, 7 or 8, wherein the rotor is provided with a central shaft, the central shaft is rotatably coupled to the bearing of the inner assembly of the shaft tube, and the outer peripheral wall of the central shaft A buckle groove is provided, and the buckle part of the inner component of the shaft tube is buckled in the buckle groove. 10. The motor according to claim 1, 2, 3, 4, 5, 6, 7 or 8, characterized in that, the opening end of the shaft tube is formed with a minimum inner diameter by the hot-melt positioning part, and the minimum inner diameter is smaller than the The maximum outside diameter of the shaft tube inner assembly. 11. The motor according to claim 1, 2, 3, 4, 5, 6, 7 or 8, characterized in that, the above-mentioned shaft tube hot-melt positioning part is provided with opposite radially extending outwards and inwards respectively. Two radial expansion flanges, one radial expansion flange is positioned at the recessed part of the inner assembly of the shaft tube, and the other radial expansion flange is positioned at the stator.