TWI674731B - Motor construction - Google Patents

Abstract

The invention discloses a motor structure, which mainly comprises a motor casing, a motor outer ring, most permanent magnets and most magnet pressure plates; a circular ring wall of the motor casing has an outer ring joint portion and a ring-shaped first insert groove ; The outer ring of the motor is a ring body corresponding to the ring wall, the first end of which is combined with the outer ring joint portion, and the second end of the motor has a ring-shaped second slot corresponding to the first slot; Between a recessed slot and a second recessed slot, and corresponding two sides of each permanent magnet are provided with a third recessed slot respectively; and a magnet pressing plate is respectively disposed between the permanent magnets, and the sides of each magnet pressing plate are embedded in a third Recessed grooves, and the upper and lower ends of each magnet pressure plate are respectively embedded in the first recessed groove and the second recessed groove; by this means, the permanent magnet is mechanically fixed to the inner wall of the outer ring of the motor, so as to avoid loosening, stable assembly structure and Convenient for assembly and other purposes.

Description

Motor structure

The invention relates to a motor structure, in particular to a magnet mounting structure inside an external rotation motor (motor) using a ceiling fan.

The permanent magnets of the outer-rotating motors (motors) of the current ceiling fans are arranged on the inner wall of the outer-rotating iron ring of the rotating case, and the permanent magnets are fixed to the outer-rotating iron corresponding to the excitation coils of the stator. The inner wall of the ring is mostly adhered to the inner wall of the outer turn iron ring by gluing. However, such an adhesive fixing method is prone to the problem of degumming failure in a hot motor environment, which causes the motor to fail to operate. Moreover, the assembly time of the conventional adhesive fixed magnet is too long, and it takes a long time to wait for the glue. Curing, production is not very convenient. Although some techniques do not use an adhesive method to fix the permanent magnet, they may need to be fixed one by one with a fastener, so the assembly method is very cumbersome. For this reason, how to solve the problem of easy degumming of the permanent magnets of today's external rotating motors (motors) is a problem to be actively overcome by the present invention.

The purpose of the present invention is to provide a motor structure, which is a mechanical combination structure that fastens a plurality of permanent magnets through a motor housing, a motor outer ring and a plurality of magnet pressure plates, thereby achieving a stable assembly structure that avoids debonding and loosening and facilitates assembly And other purposes.

In order to achieve the above object, a preferred technical solution of the motor structure of the present invention includes a motor housing having an end cover portion, a shaft hole provided in the center of the end cover portion, and a ring wall surrounding the end cover portion. , The end of the ring wall opposite to the end cover has A combination end having a ring-shaped first insert groove; a motor outer ring, which is a ring body corresponding to a ring wall of a motor casing, and a first end of which is detachably combined with the combination of the motor casing A second end having a pair of ring-shaped second recesses corresponding to the first recesses; a plurality of permanent magnets are arranged in a ring shape between the first recesses and the second recesses, and The inner wall of the outer ring of the motor is provided with a third recessed groove on each of the two corresponding sides of the permanent magnet; and a plurality of magnet pressing plates respectively disposed between the permanent magnets. Third sides are respectively embedded in the third recesses of the permanent magnets, one end of each of the magnet pressure plates is respectively embedded in the first recesses of the ring wall, and the other ends of the magnet pressure plates are respectively embedded in the second recesses of the outer ring of the motor.

In the above motor structure, the first recessed groove and the second recessed groove each have an inclined groove wall, and each of the magnet pressing plates abuts against the inclined groove wall.

In the above motor structure, a periphery of the combined end of the ring wall has an annular outer ring joint portion, and an inner side of the outer ring joint portion has an annular first inner retaining wall, the first inner retaining wall and the outer ring The space between the joints forms the first recessed groove.

In the above motor structure, the outer ring joint portion has a flange protruding from the outer side surface of the ring wall, a step groove formed on the outer end of the flange, and the first end of the outer ring of the motor is detachably fitted on the outer ring. The first end of the outer ring of the motor and abuts against the flange.

In the above motor structure, the flange is provided with a plurality of screw perforations, each of which is threaded with a screw, and the screw locks the outer ring of the motor to the flange.

In the above motor structure, the end cover portion of the motor housing is a round cover, the ring wall is an annular wall integrally formed with the motor housing, and the outer ring of the motor is an annular body made of a ferromagnetic material.

In the above motor structure, the permanent magnet is a rectangular magnet, and the third insert grooves on the two sides of the permanent magnet extend to the upper and lower ends thereof, respectively.

The motor structure of the present invention adopts a mechanical fixing technology, and the upper and lower ends of each of the magnet pressure plates are fixed by the first recessed groove of the motor housing and the second recessed groove structure of the motor outer ring, and each of the magnet pressure plates is provided. Between each of the permanent magnets and embedding the third inset slot, the permanent magnets arranged in a ring shape can be firmly assembled into the motor casing, thereby avoiding the problem of degumming that may be caused by the conventional gluing method. Each of the magnet pressing plates is disposed between two adjacent permanent magnets, and is embedded in a third recessed groove of the side wall. Each of the magnet pressing plates is preferably made of stainless steel, so that the magnet pressing plate is elastic and rigid. The protruding permanent magnets protrude outwardly, and the protruding portions at the upper and lower ends of the protruding magnets respectively abut against the walls of the first groove and the second groove of the second groove to generate lateral pressure, forcing each of the permanent magnets to closely press against the permanent magnet. The inner wall of the outer ring of the motor prevents the permanent magnets from falling off or becoming loose. Another advantage of the present invention is that all permanent magnets can be installed. When the motor housing is combined with the outer ring of the motor, the first inserting groove and the second inserting groove can be fitted into a magnet pressing plate arranged in a complete circle to achieve Quick and easy assembly.

100‧‧‧ Ceiling Fan

10‧‧‧Motor housing

11‧‧‧ end cap

12‧‧‧ Shaft hole

13‧‧‧ ring wall

14‧‧‧Combination side

15‧‧‧The first slot

151‧‧‧chamber wall

16‧‧‧ outer ring junction

161‧‧‧ flange

162‧‧‧Class slot

163‧‧‧ Screw perforation

164‧‧‧Screw

17‧‧‧The first inner retaining wall

20‧‧‧motor outer ring

21‧‧‧Second slot

211‧‧‧chamber wall

30‧‧‧ permanent magnet

31‧‧‧The third slot

40‧‧‧Magnet plate

41‧‧‧side

42, 43‧‧‧

50‧‧‧ stator

FIG. 1 is a schematic diagram of a composition state of a motor structure of the present invention applied to a ceiling fan motor.

FIG. 2 is a schematic exploded view of a preferred embodiment of the motor structure of the present invention applied to a ceiling fan motor.

FIG. 3 is a schematic perspective sectional view of a combined state of a preferred embodiment of a motor structure according to the present invention.

FIG. 4 is a schematic side sectional view of a combined state of a preferred embodiment of a motor structure according to the present invention.

The structural features and other functions and purposes of the present invention are described in detail in the embodiments of the accompanying drawings as follows: Referring to FIG. 1, the motor structure of the present invention is used to install an external rotation motor that becomes a ceiling fan 100. As shown in FIGS. 2, 3 and 4, the present invention is preferred Specific embodiments include: a motor housing 10, which is a housing made of a metal such as aluminum-based alloy with better heat dissipation, and has a structure mainly including a round end cover portion 11 disposed at the center of the end cover portion 11. The shaft hole 12 is used for penetrating the mandrel of the stator 50. A circular ring wall 13 surrounding the end cover portion 11 has a combination end 14 opposite to one end of the end cover portion 11. The combined end 14 has a ring-shaped first recess 15; a motor outer ring 20, which is a circular ring body made of a ferromagnetic material corresponding to the ring wall 13 of the motor housing 10, and a first end The second end 14 of the motor housing 10 is detachably assembled, and a second end thereof has a pair of annular second recesses 21 corresponding to the first recesses 15; a plurality of permanent magnets 30, each of which is The magnet is preferably implemented as a rectangular piece. Each of the two sides of the permanent magnet 30 is provided with a third insertion groove 31, which extends to the upper and lower ends of the permanent magnet 30. Permanent magnets 30 are annularly arranged between the first recessed slot 15 and the second recessed slot 21, and are abutted against the motor. The inner wall of the ring 20; and a plurality of magnet pressing plates 40 respectively disposed between the permanent magnets 30. Each of the magnet pressing plates 40 is a rectangular stainless steel thin plate, and the two sides 41 of each of the magnet pressing plates 40 are respectively embedded in the respective The third recessed groove 31 of the permanent magnet 30, one end 42 of each of the magnet pressure plates 40 is fitted into the first recessed groove 15 of the annular wall 13, and the other end 43 of the magnet pressure plate 40 is respectively fitted into the second of the motor outer ring 20. Inlaid groove 21. Accordingly, the present invention can be used to fix the upper and lower ends 42 and 43 of the magnet platen 40 through the first recessed groove 15 of the motor housing 10 and the second recessed groove 21 of the outer ring 20 of the motor. The magnet pressing plate 40 is disposed between each of the permanent magnets 30 and fits into the third recessed groove 31, so that the annular permanent magnets 30 can be firmly assembled on the inner wall of the outer ring 20 of the motor, thereby avoiding the conventional sticking. May cause problems with degumming.

Referring again to FIG. 4, the first recessed groove 15 of the motor housing 10 and the second recessed groove 21 of the motor outer ring 20 according to the present invention are corresponding annular grooves, and are used to respectively fix the upper and lower sides of the magnet pressing plates 40. The ends 42 and 43 are formed so that the back surface of each of the permanent magnets 30 can be tight. It is grounded against the inner wall of the outer ring 20 of the motor. The present invention further implements a first groove 15 and a second groove 21 respectively with inclined groove walls 151 and 211, so that the first groove 15 and the The cross-sectional shape of the second recessed groove 21 has a structure with a wide entrance and a narrow groove bottom, so that when the upper and lower ends 42 and 43 of each of the magnet pressing plates 40 are inserted into the first recessed groove 15 and the second recessed groove 21 At this time, they can abut against the chute walls 151 and 211, respectively, and then generate a component force that pushes the permanent magnets 30 against the inner wall of the outer ring 20 of the motor, so that the permanent magnets 30 are tightly and firmly attached. Leaning against the inner wall of the outer ring 20 of the motor does not require the use of conventional adhesives for adhesion.

Referring again to FIG. 3 and FIG. 4, in order to enable the motor housing 10 to implement the above-mentioned structure of the first recessed groove 15 and to be used to combine the motor outer ring 20, it is one of the preferred embodiments. A ring-shaped outer ring joint portion 16 can be integrally formed on the periphery of the combined end 14 of the motor housing 10, and the inner side of the outer ring joint portion 16 has a ring-shaped first inner retaining wall 17, thereby passing A space between the first inner barrier wall 17 and the outer ring joint portion 16 forms the first recessed groove 15, and an outer surface of the first inner barrier wall 17 is used to form the inclined groove wall 151. Among them, the outer ring coupling portion 16 is preferably implemented with a flange 161 protruding from the outer side of the ring wall 13 and a step groove 162 formed on an end surface of the flange 161, so that the motor outer ring 20 The first end is detachably fitted to the step groove 162, and the first end of the motor outer ring 20 is abutted against the flange 161; and the flange 161 may be provided with a plurality of screw holes 163, each of which A through hole 163 is provided with a screw 164, and the screw 164 locks the motor outer ring 20 to the flange 161, and then fixes the motor outer ring 20 to the outer ring joint portion 16, while using the screw 164 to lock the With the force, the first recessed groove 15 and the second recessed groove 21 are abutted, so that the upper and lower ends 42 and 43 of each of the magnet pressing plates 40 abut against the inclined groove walls 151 and 211, respectively, so as to push the permanent magnet 30. The component force. It can be seen that the multiple effects of simultaneously fixing the motor outer ring 20, the magnet pressing plates 40, and the permanent magnets 30 can be achieved through a screw-locking action.

In summary, the motor structure of the present invention is indeed practical and creative, and the use of its technical means is also novel and undoubted, and the efficacy and design purpose are indeed consistent, and it has been said that the reasonable progress is clear. To this end, an application for an invention patent was filed in accordance with the law, but I would like to ask Jun Bureau for detailed review and to grant the patent as a prayer.

Claims (7)

A motor structure includes a motor housing having an end cover portion, a shaft hole provided in the center of the end cover portion, and a ring wall surrounding the end cover portion, the ring wall being opposite to the end cover portion. One end has a combined end, the combined end has a ring-shaped first insert groove; a motor outer ring, which is a ring body corresponding to the ring wall of the motor casing, and a first end of which is detachably combined with the motor casing A combination end of which has a pair of ring-shaped second inserting grooves corresponding to the first inserting grooves at a second end; a plurality of permanent magnets are arranged annularly between the first inserting grooves and the second inserting grooves, And abuts against the inner wall of the outer ring of the motor, each of the two sides of the permanent magnet is provided with a third insert groove; and a plurality of magnet pressing plates respectively disposed between the permanent magnets, and each of the magnet pressing plates The two sides of each are respectively inserted into the third insertion grooves of the permanent magnet, one end of each of the magnet pressing plates is respectively inserted into the first insertion groove of the ring wall, and the other ends of the magnet pressing plates are respectively inserted into the second insertion grooves of the outer ring of the motor. groove. The motor structure according to claim 1, wherein the first recessed groove and the second recessed groove each have an inclined groove wall, and each of the magnet pressing plates abuts against the inclined groove wall. The motor structure according to claim 1, wherein a periphery of the combined end of the ring wall has a ring-shaped outer ring joint portion, and an inner side of the outer ring joint portion has a ring-shaped first inner retaining wall, the first inner A space between the retaining wall and the outer ring joint portion forms the first embedding groove. The motor structure according to claim 3, wherein the outer ring joint portion has a flange protruding from an outer side surface of the ring wall, and a step groove formed at an outer end of the flange; and the first end of the outer ring of the motor may be Separately fit in the step groove, the first end of the outer ring of the motor abuts against the flange. The motor structure according to claim 4, wherein the flange is provided with a plurality of screw holes, and each of the screw holes penetrates a screw, and the screw locks the outer ring of the motor to the flange. The motor structure according to claim 1, wherein the end cover portion of the motor housing is a round cover, the ring wall is an annular wall integrally formed with the motor housing, and the outer ring of the motor is composed of a ferromagnetic material Torus. The motor structure according to claim 1, wherein the permanent magnet is a rectangular magnet, and the third recesses on the two sides of the permanent magnet extend to the upper and lower ends thereof, respectively.