TWI699946B - Stator of a motor and method for manufacturing the same - Google Patents

Abstract

A stator of a motor and a method for manufacturing the same are provided to overcome the undesired inclination of the circuit board during assembly of the stator. The stator of the motor includes a winding unit having a magnetic pole member coupled with an insulating member and a coil unit wound around the insulating member, a circuit board axially opposite to the winding unit, and at least one connecting member. The winding unit has at least one axial through-hole. Each connecting member extends through a respective axial through-hole and a first end and a second end. The second end of each connecting member is closer to the circuit board than the first end is to the circuit board. The first end is welded to the coil unit. Each connecting member is connected to the circuit board only through the second end.

Description

Motor stator manufacturing method and motor stator

The invention relates to a method for manufacturing motor parts and motor parts, in particular to a method for manufacturing motor stators and motor stators.

Please refer to Figure 1, which is a conventional motor 9. The conventional motor 9 has a base 91, the base 91 has a shaft tube 911, a bearing 92 is accommodated in the shaft tube 911, the stator 93 is arranged on the outer circumference of the shaft tube 911. The stator 93 has an insulating sleeve 931 and a circuit board 932 located below the insulating sleeve 931. There is a minimum distance h1 between the insulating sleeve 931 and the circuit board 932. The stator 93 There is a bobbin 933 on the bottom of the insulating sleeve 931. The bobbin 933 is welded and combined with a coil 934 to form a welding height h2, and the bobbin 933 penetrates the circuit board 932 and is welded and combined with the bottom surface of the circuit board 932 to make the The coil 934 can be electrically connected to the circuit board 932, and a rotor 94 is rotatably arranged on the outer circumference of the stator 93. An embodiment similar to the conventional motor 9 has been disclosed in the Republic of China Publication No. M292204 "Motor Stator Device" patent case.

In the above-mentioned conventional motor 9, the bobbin 933 and the coil 934 are first welded and combined with liquid tin, and then the bobbin 933 is inserted into the hole of the circuit board 932 and welded to the bottom surface of the circuit board 932. However, since the winding post 933 is welded and combined with the coil 934 between the bottom surface of the insulating sleeve 931 and the circuit board 932, and the minimum distance h1 here is very small, if you accidentally use an excessive amount when welding the coil 934 Liquid tin or unfamiliar welding operations may cause the welding height h2 to be too large; or, when there are more than two bobbins 933, the welding height on each bobbin 933 will be caused by soldering with liquid tin. Inconsistent h2, it is easy for the solidified tin to squeeze the circuit board 932 and the circuit board 932 will tilt. Therefore, in order to prevent the circuit board 932 from tilting, it is necessary to more carefully control the amount and actions of tin during soldering. The welding operation is difficult and the efficiency is difficult to improve.

In view of this, the conventional motor does still need to be improved.

In order to solve the above problems, the object of the present invention is to provide a method for manufacturing a motor stator and a motor stator. The welding joint coil of the lead part is not located between the bottom surface of the insulating sleeve and the circuit board, so that the welding of the lead part and the coil is not Affect the bonding relationship between the guide and the circuit board, thereby avoiding the situation of causing the circuit board to tilt.

The second objective of the present invention is to provide a method for manufacturing a motor stator and a motor stator, which can improve the ease of assembly.

Another object of the present invention is to provide a method for manufacturing a motor stator and a motor stator, which can weld the lead and the coil by the tin dip method to improve manufacturing convenience.

Another object of the present invention is to provide a method for manufacturing a motor stator and a motor stator, which can reduce the manufacturing cost.

The directionality described in the full text of the present invention or its similar terms, such as "front", "rear", "left", "right", "up (top)", "down (bottom)", "inner", "outer" , "Side", etc., mainly refer to the directions of the attached drawings. Each directionality or similar terms are only used to help explain and understand the embodiments of the present invention, and are not used to limit the present invention.

The use of the quantifiers "one" or "one" in the elements and components described in the full text of the present invention is only for convenience and to provide the general meaning of the scope of the present invention; in the present invention, it should be interpreted as including one or at least one, and single The concept of also includes the plural, unless it clearly implies other meanings.

The approximate terms such as "combination", "combination" or "assembly" mentioned in the full text of the present invention mainly include the types that can be separated without destroying the components after being connected, or the components can be made inseparable after being connected, which are common knowledge in the field Those can be selected based on the materials of the components to be connected or assembly requirements.

The method for manufacturing a motor stator of the present invention includes: preparing a winding set having a magnetic pole piece combined with an insulating member; inserting at least one guide member into at least one axial through hole of the winding set; A coil is wound around the insulating member, the wire end of the coil is wound around the first end of the at least one guiding member, and then the wire end and the at least one guiding member are welded together; and the at least one guiding member The second end is connected to a circuit board.

The present invention also provides a motor stator, including: a winding set having a magnetic pole piece combined with an insulating piece, a coil wound around the insulating piece, the winding set having at least one axial through hole; a circuit board, and The winding assembly is axially opposite; and at least one guide piece is disposed through the at least one axial through hole, the at least one guide piece has a first end and a second end, and the second end is larger than the first end One end is adjacent to the circuit board, the first end is welded and combined with the coil, and the at least one conductive member is connected to the circuit board only by the second end.

Accordingly, in the motor stator manufacturing method and the motor stator of the present invention, the wire end of the coil is first connected to the first end of the at least one guide member, and then the second end is connected to the circuit board; thereby, the The welding place between the lead and the coil is located at the first end of the lead, and the welding condition will naturally not affect the bonding relationship between the second end of the lead and the circuit board, thereby avoiding the circuit board tilt It also greatly reduces the difficulty of welding operations, and has the effects of improving welding convenience and efficiency.

Wherein, the at least one guiding member is pressed down so that the at least one guiding member penetrates the at least one axial through hole, and then the circuit board is disposed on the second end of the at least one guiding member so that the at least one guiding member The second end of the connector can penetrate a through hole of the circuit board, and the second end of the at least one conductive element and the circuit board can be welded to connect the second end of the at least one conductive element to the circuit board . In this way, the coil can be electrically connected to the circuit board, which has the effect of improving operation convenience.

Wherein, before pressing down the at least one guiding piece, the wire end of the coil is wound around the at least one guiding piece higher than the top surface of the insulating piece, and then the first end of the at least one guiding piece is welded and combined A welding part is formed to cover the wire end of the coil. In this way, the coil and the conductive member can be welded and firmly combined by the dipping method, which has the effect of improving the welding efficiency and preventing the coil from separating from the conductive member.

Wherein, the at least one guiding member can be pressed down by a jig, so that the first end of the at least one guiding member can protrude from the top surface of the insulating member. In this way, it is possible to prevent the winding set from being damaged by the pressing of the jig when the guide member is pressed down by the jig, which has the effect of protecting the winding set.

Wherein, the two ends of the axial through hole may respectively form a first opening and a second opening, the first opening of the axial through hole and the top surface of the insulating member have an interval height, and the guide member is welded and combined A welding part is formed at the coil, and the welding part has an axial height, and the axial height may be smaller than the interval height. In this way, after pressing down the at least one guide member, it is still possible to ensure that the coil maintains proper tension and does not form an excessively slack state, which can further improve the molding of the motor while maintaining good performance of the motor stator. The smooth operation and efficiency of the stator.

Wherein, the insulating member may have a middle ring portion, the outer periphery of the middle ring portion may be connected with several pole corresponding parts, the outer periphery of the middle ring portion may have at least one protruding post and at least one coupling groove portion, and the protruding post can be The axial through hole is provided, the protruding column is located between the corresponding portions of two adjacent pole posts, the coupling groove portion can communicate with the top surface of the insulator, and the welding portion is opposite to the coupling groove portion. In this way, the structure is simple and easy to manufacture, and has the effect of reducing manufacturing costs.

Wherein, the first end of the at least one guiding member may protrude from the top surface of the insulating member. In this way, when the guide member is pressed down by a jig, the winding set is prevented from being damaged by the pressing of the jig, which has the effect of protecting the winding set.

Wherein, the axial height can be 0.5-2mm. In this way, it is ensured that the welding portion can have a sufficient axial height, which has the effect of improving the stability of the combination of the coil and the connecting member.

Wherein, the at least one guiding member can be tightly coupled with the at least one axial through hole. In this way, before pressing down the at least one conductive member, it can be ensured that the first end is higher than the top surface of the insulating member, and the welding operation of the coil and the conductive member can be performed smoothly, which has improved manufacturing convenience effect.

Wherein, the cross section of the at least one guiding member may be polygonal. In this way, several or each corner portion of the at least one guide member can be fastened to the inner wall of the at least one axial through hole, and there is a way to prevent the at least one guide member from being relative to the at least one axial through hole. The sliding effect of the inner wall.

In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the following describes the preferred embodiments of the present invention in conjunction with the accompanying drawings in detail as follows:

Please refer to Figures 2 and 3, the motor stator manufacturing method of the present invention includes the following steps:

First, a winding set 1 is prepared. The winding set 1 has a magnetic pole piece 11, which can be formed by axially stacking several silicon steel sheets, or directly formed by forming a magnetic material (such as soft magnetic powder) . A hole can be formed in the center of the pole piece 11 for a shaft tube (not shown in the figure) to penetrate. The winding set 1 further has an insulating member 12 coupled to the magnetic pole piece 11, the insulating member 12 may have a lower insulating sleeve and an upper insulating sleeve, and the lower insulating sleeve and the upper insulating sleeve may jointly cover the magnetic pole piece 11 In this embodiment, the insulating member 12 is selected as an integral injection molding method to cover the magnetic pole piece 11, the insulating member 12 may have a middle ring portion 121 and a plurality of pole corresponding portions 122, the plurality of poles The corresponding portion 122 connects the outer circumference of the middle ring portion 121.

In addition, the winding set 1 also has at least one axial through hole 14 for the at least one guide member 3 to pass through. The shape of the axial through hole 14 is not limited in the present invention; in this embodiment, Optionally, the outer periphery of the middle ring portion 121 may have at least one protrusion 123, the protrusion 123 is located between two adjacent pole corresponding portions 122, the axial through hole 14 penetrates the protrusion 123, and the axial Both ends of the through hole 14 respectively form a first opening 14a and a second opening 14b, the first opening 14a is located above the second opening 14b, and the first opening 14a of the axial through hole 14 reaches the insulating member 12 The top surface 12a has an interval height H1.

Preferably, the boss 123 may also have a coupling groove 124 above the protruding column 123, and the coupling groove 124 can be recessed in the outer peripheral surface of the insulating member 12, so that the coupling groove 124 can communicate with the axial through hole 14 and The top surface 12a of the insulating member 12.

Then, at least one guide member 3 is inserted into at least one axial through hole 14 of the winding set 1, so that the at least one guide member 3 is tightly fitted with at least one axial through hole 14 of the winding set 1 In combination, the at least one guiding member 3 can temporarily maintain its position after passing through the at least one axial through hole 14 without sliding down, so that the first end 3a of the at least one guiding member 3 can be higher than the insulating The top surface 12a of the piece 12. The at least one guiding member 3 has a first end 3a and a second end 3b.

Please refer to Figures 3 and 4, and then, a coil 13 of the winding set 1 is wound around the pole corresponding portions 122 of the insulating member 12, so that the insulating member 12 can be located between the magnetic pole member 11 and Between the coils 13 to ensure good insulation between the coil 13 and the magnetic pole piece 11, and to avoid a short circuit between the coil 13 and the magnetic pole piece 11. Moreover, after the wire end 13a of the coil 13 is wound around the first end 3a of the at least one guiding member 3, the first end 3a of the at least one guiding member 3 is coated with tin liquid to make the wire end 13a It is welded and combined with the at least one conductive member 3 to form a welding portion 31 covering the wire end 13 a of the coil 13. At this time, the welding portion 31 is higher than the top surface 12 a of the insulating member 12.

In detail, a welding portion 31 may be formed where the guide member 3 is welded and combined with the coil 13. The welding portion 31 may have an axial height H2, the axial height H2 may be smaller than the interval height H1, and the axial height H2 The height H2 is preferably 0.5-2 mm.

Please refer to Figures 4 and 5. Finally, after the at least one guiding member 3 penetrates the at least one axial through hole 14, a circuit board 2 can be arranged axially opposite to the winding assembly 1, and Located at an end away from the coupling groove 124, so that the second end 3b of the at least one guiding member 3 is closer to the circuit board 2 than the first end 3a, and then the second end 3b of the at least one guiding member 3 penetrates Enter a through hole 21 of the circuit board 2. The through hole 21 penetrates an upper surface 2a and a lower surface 2b of the circuit board 2. In this embodiment, the second end 3b can protrude from the lower surface of the circuit board 2. 2b, and weld and join the second end 3b of the at least one conductive member 3 with the circuit board 2, so that the second end 3b of the at least one conductive member 3 is connected to the lower surface 2b of the circuit board 2, wherein the At least one conductive member 3 is made of metal material, so that the coil 13 and the circuit board 2 can be electrically connected.

In particular, when the at least one guiding member 3 penetrates the at least one axial through hole, if the length of the at least one guiding member 3 is not enough to make the second end 3b protrude from the second opening 14b, It is also possible to choose to press down the at least one guiding member 3 by a jig T so that the second end 3b can protrude from the second opening 14b to connect to the circuit board 2; and during the pressing process, the jig T is relatively It is better not to touch the winding set 1 so that the first end 3a of the at least one guiding member 3 can slightly protrude from the top surface 12a of the insulating member 12 to prevent the winding set 1 from being damaged by the pressing of the jig T .

Please refer to Figures 2, 6, and 7, in addition, it is noted that the cross section of the at least one guiding member 3 can be circular or polygonal, etc., preferably polygonal, for example: the at least one guiding member 3 The member 3 may be quadrilateral as shown in FIG. 6, or may be octagonal as shown in FIG. 7, and the present invention is not limited. Thereby, the at least one guide member 3 can be fixed to the inner wall 141 of the at least one axial through hole 14 by its several or each corner portion 30, so as to prevent the at least one guide member 3 from being relative to the at least one axis. Slide to the inner wall 141 of the through hole 14.

Referring to FIG. 5, the motor stator according to a preferred embodiment of the present invention can be manufactured by the aforementioned motor stator manufacturing method, which includes a winding assembly 1, a circuit board 2 and at least one guiding member 3. The welding portion 31 of the guide member 3 is located in the coupling groove 124, and the first end 3a of the at least one guide member 3 may be higher or lower than the top surface 12a of the insulating member 12. In this embodiment, The first end 3a slightly protrudes from the top surface 12a of the insulating member 12 for illustration. Thereby, the first end 3a is welded to the coil 13, and the at least one conductive member 3 is connected to the circuit board 2 only by the second end 3b, which means that if there are more than two circuit boards 2 or other circuits The components of the unit will not be connected to the circuit board 2 or other circuit unit components by the first end 3a, so that the soldering portion 31 is located at the end away from the circuit board 2 to ensure that the at least one lead 3 is assembled The welding condition of the at least one conductive member 3 and the coil 13 will not affect the bonding relationship between the at least one conductive member 3 and the circuit board 2, which can prevent the circuit board 2 from tilting.

In summary, in the motor stator manufacturing method and the motor stator of the present invention, the wire end of the coil is first connected to the first end of the at least one guide member, and then the second end is connected to the circuit board; thereby , The welding place between the lead and the coil is located at the first end of the lead, and the welding condition will naturally not affect the bonding relationship between the second end of the lead and the circuit board, thus avoiding the occurrence of the circuit When the board is inclined, the difficulty of the welding operation is greatly reduced, and the welding convenience and efficiency are improved.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with the art without departing from the spirit and scope of the present invention may make various changes and modifications relative to the above-mentioned embodiments. The technical scope of the invention is protected. Therefore, the scope of protection of the invention shall be subject to the scope of the attached patent application.

﹝this invention﹞

1: Winding group

11: Magnetic pole pieces

12: Insulation

12a: Top surface

121: middle circle

122: pole corresponding part

123: convex column

124: Combination groove

13: Coil

13a: wire end

14: Axial through hole

14a: first opening

14b: second opening

141: Inner Wall

2: circuit board

2a: upper surface

2b: lower surface

21: Through hole

3: guide parts

3a: first end

3b: second end

30: Corner

31: Welding Department

H1: Interval height

H2: Axial height

T: Fixture

﹝Used ﹞

9: Motor

91: Pedestal

911: Shaft tube

92: Bearing

93: stator

931: Insulation sleeve

932: Circuit Board

933: Spool

934: Coil

h1: minimum spacing

h2: welding height

94: Rotor

[Figure 1] A sectional view of a conventional motor assembly. [Figure 2] An exploded perspective view of a preferred embodiment of the present invention. [Figure 3] The combined cross-sectional view along the line A-A in Figure 2. [Figure 4] Partial enlarged view of Figure 3. [Figure 5] A combined cross-sectional view of a preferred embodiment of the present invention after the guide member is pressed down. [Figure 6] Sectional view along the line B-B in Figure 5. [Figure 7] A cross-sectional view of another aspect along the line B-B in Figure 5.

1: Winding group

11: Magnetic pole pieces

12: Insulation

12a: Top surface

122: pole corresponding part

123: convex column

124: Combination groove

13: Coil

13a: wire end

14: Axial through hole

14a: first opening

14b: second opening

2: circuit board

2a: upper surface

2b: lower surface

21: Through hole

3: guide parts

3a: first end

3b: second end

31: Welding Department

T: Fixture

Claims (11)

A method for manufacturing a motor stator includes: preparing a winding set having a magnetic pole piece combined with an insulating member; inserting at least one guide member into at least one axial through hole of the winding set; The coil is wound around the insulating member, and after the wire end of the coil is wound around the first end of the at least one guiding member, the wire end and the at least one guiding member are welded together; and the at least one guiding member The second end is connected to a circuit board. According to the method for manufacturing a motor stator according to claim 1, wherein the at least one guide member is pressed down so that the at least one guide member penetrates the at least one axial through hole, and then the circuit board is placed on The second end of the at least one connecting piece is made so that the second end of the at least one connecting piece penetrates a through hole of the circuit board, and the second end of the at least one connecting piece and the circuit board are welded and joined so that the The second end of at least one connecting member is connected to the circuit board. The method for manufacturing a motor stator according to claim 2, wherein, before pressing down the at least one guide member, the wire end of the coil is wound around the at least one guide member higher than the top surface of the insulating member , And then weld the first end of the at least one connecting piece to form a welding part covering the wire end of the coil. The method for manufacturing a motor stator according to the second item of the patent application, wherein the at least one guide member is pressed down by a jig so that the first end of the at least one guide member protrudes from the top of the insulating member surface. A motor stator includes: a winding set having a magnetic pole piece combined with an insulating part, a coil is wound around the insulating part, the winding set has at least one axial through hole; a circuit board, and the winding set Axially opposite; and at least one guide member is provided through the at least one axial through hole, the at least one guide member has a first One end and a second end, the second end is closer to the circuit board than the first end, the first end is welded and combined with the coil, and the at least one conductive member is connected to the circuit board only by the second end. According to the motor stator described in item 5 of the scope of patent application, wherein two ends of the axial through hole are respectively formed with a first opening and a second opening, and the first opening of the axial through hole extends to the top of the insulating member The mask has an interval height, the guide piece is welded and combined with the coil to form a welding part, the welding part has an axial height, and the axial height is smaller than the interval height. According to the motor stator described in item 6 of the scope of patent application, wherein the insulating member has a middle ring portion, the outer circumference of the middle ring portion is connected with a plurality of pole corresponding portions, and the outer circumference of the middle ring portion has at least one convex post and At least one coupling groove portion, the protruding post is provided with the axial through hole, the protruding post is located between the corresponding portions of two adjacent pole posts, the coupling groove portion is connected to the top surface of the insulator, and the welding portion is opposed to the Combine the groove. According to the motor stator described in item 6 of the scope of patent application, the axial height is 0.5-2mm. According to the motor stator described in claim 5, the first end of the at least one guiding member protrudes from the top surface of the insulating member. According to the motor stator described in item 5 of the patent application, the at least one guide member is tightly coupled with the at least one axial through hole. According to the motor stator described in item 5 of the scope of patent application, the cross section of the at least one guide member is polygonal.

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