CN110165825B

CN110165825B - Motor and cooking machine

Info

Publication number: CN110165825B
Application number: CN201810140188.8A
Authority: CN
Inventors: 梁显堂; 陈连城; 庞从善; 杨振峰; 杨光仁
Original assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Current assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Priority date: 2018-02-11
Filing date: 2018-02-11
Publication date: 2022-12-09
Anticipated expiration: 2038-02-11
Also published as: CN110165825A

Abstract

The invention relates to the field of household appliances, and discloses a motor and a food processor, wherein the motor comprises a front end cover (11) and an output rotating shaft which penetrates out of the front end cover from the inner cavity of the motor, the output rotating shaft comprises an inner rotating shaft (2) and an outer rotating shaft (3) which are concentrically arranged, and a gear transmission mechanism is also arranged in the inner cavity of the motor and is in transmission connection with the inner rotating shaft and the outer rotating shaft. In the motor, the gear transmission mechanism is accommodated in the inner cavity of the motor, so that the situation that the gear transmission mechanism is damaged or damaged due to negligence of an assembler can be avoided, and the gear transmission assembly is effectively prevented from being interfered when other parts (such as electric wires) in the food processor are loosened, so that the reliability and the service life of the gear transmission mechanism are greatly improved, and the reliability and the service life of the food processor are further improved.

Description

Motor and cooking machine

Technical Field

The invention belongs to the field of household appliances, and particularly relates to a motor and a food processor.

Background

Along with the continuous progress of science and technology and the continuous improvement of the living standard of people, the application of food processors such as a wall breaking machine, a soybean milk machine and the like with the double-shaft whipping function is more and more popularized. Wherein, the motor rotation drive in the cooking machine is the biax of arranging with one heart, and the double-cutter head in the stirring cup body links to each other with biax transmission respectively, realizes that the double-cutter head stirs the operation simultaneously.

At present, the motor generally adopts external drive mechanism with the concentric biax of rotary drive, so, when assembly personnel equipment cooking machine, relatively easy bruising or even damage this drive mechanism, of course, accomplish the back at cooking machine equipment, also relatively easy appear because other parts (for example electric wire) pine in the cooking machine take off and produce the situation of interfering to drive assembly, like this, all can exert an influence to drive assembly's normal operation, and then reduce the life of complete machine.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the motor and the food processer, wherein the motor can effectively protect the gear transmission mechanism, is beneficial to improving the reliability and the service life of the gear transmission mechanism, and further improves the reliability and the service life of the food processer.

In order to achieve the above object, the present invention provides a motor, which includes a front end cover and an output rotation shaft penetrating out of an inner cavity of the motor through the front end cover, wherein the output rotation shaft includes an inner rotation shaft and an outer rotation shaft which are concentrically arranged, and a gear transmission mechanism is further disposed in the inner cavity of the motor, and the gear transmission mechanism is in transmission connection with the inner rotation shaft and the outer rotation shaft.

Preferably, the gear transmission mechanism comprises a gear bracket and a gear transmission piece, the gear transmission piece is accommodated in a bracket inner cavity of the gear bracket, and the gear bracket is positioned in the motor inner cavity and fixedly mounted on the front end cover.

Preferably, the gear holder is a closed cubic holder.

Preferably, the inner rotating shaft sequentially penetrates through the bottom wall and the top wall of the gear bracket and penetrates out of the top wall of the front end cover, the outer rotating shaft is concentrically sleeved outside the inner rotating shaft and extends out of the top wall of the gear bracket and the top wall of the front end cover, the gear transmission part comprises an inner shaft gear and an outer shaft gear which are fixedly sleeved on the outer peripheral walls of the inner rotating shaft and the outer rotating shaft respectively, and the inner shaft gear is in transmission connection with the outer shaft gear.

Preferably, the gear transmission comprises an intermediate gear pivotally mounted to a side wall of the gear rack and engaging the inner and outer shaft gears respectively.

Preferably, the gear bracket includes first and second bracket half sections split along a half section defined by a central axis of the intermediate gear perpendicularly crossing concentric axes of the inner and outer rotating shafts.

Preferably, the outer peripheral walls of the inner rotating shaft and the outer rotating shaft are respectively provided with an inner bearing set and an outer bearing set, the inner bearing set and the outer bearing set are respectively arranged on the bottom wall and the top wall of the gear support, the rotating shaft of the intermediate gear is provided with an intermediate bearing set, and the intermediate bearing set is arranged on the side wall of the gear support.

Preferably, a bottom end of the inner shaft gear abuts against a top end of the inner bearing set, a top end of the outer shaft gear abuts against a bottom end of the outer bearing set, and the intermediate gear is respectively engaged with the inner shaft gear and the outer shaft gear.

Preferably, the intermediate gear, the inner shaft gear and the outer shaft gear are all conical gears, and the horizontal inclination angles of the respective conical generatrices of the inner shaft gear and the outer shaft gear are not less than 45 ° and not more than 60 °.

The invention also provides a food processor which comprises an inner shaft stirring cutter component, an outer shaft stirring cutter component and a motor, wherein the inner rotating shaft drives the inner shaft stirring cutter component to rotate, and the outer shaft stirring cutter component is in transmission connection with the outer rotating shaft.

Through the technical scheme, in the motor, the inner rotating shaft and the outer rotating shaft which are concentrically arranged penetrate through the front end cover of the motor, the inner rotating shaft and the outer rotating shaft are in transmission connection through the gear transmission mechanism, and the gear transmission mechanism is accommodated in the inner cavity of the motor, so that the gear transmission mechanism is integrated in the motor, the gear transmission mechanism can be effectively protected, the situation that the gear transmission mechanism is damaged or bruised due to negligence of an assembler can be avoided, interference on the double-shaft transmission assembly when other parts (such as electric wires) in the food processor are loosened can be effectively prevented, the reliability and the service life of the gear transmission mechanism can be greatly improved, and the reliability and the service life of the food processor are improved.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is an overall sectional view of a motor according to a preferred embodiment of the present invention;

fig. 2 to 5 are schematic views illustrating a process of assembling a gear transmission member into a gear holder, in which fig. 2 shows a sectional view of an inner shaft gear and an inner bearing set provided on an outer circumferential wall of an inner shaft, fig. 3 shows a sectional view of an outer shaft provided with an outer shaft gear and an outer bearing set fitted around the inner shaft, fig. 4 shows a sectional view of an inner shaft and an outer shaft fitted into a first holder half-section, and fig. 5 shows a sectional view of an intermediate gear fitted with an intermediate bearing set fitted into a first holder half-section after being engaged with the inner shaft gear and the outer shaft gear, respectively.

Description of reference numerals:

2. inner rotating shaft 3 and outer rotating shaft

4. Gear support

11. Front end cover 12 outer stator

13. Inner rotor 14 rear end cap

51. Inner shaft gear 52 and outer shaft gear

53. Internal bearing set of intermediate gear 61

62. Outer bearing set 63 and intermediate bearing set

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the present invention, unless specified to the contrary, use of the terms "upper, lower, top and bottom" in the orientation illustrated in the drawings generally refers to the orientation of the components as shown in the drawings or to the orientation of the components relative to each other in the vertical, vertical or gravitational direction.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

According to an aspect of the present invention, referring to fig. 1, the motor includes a front end cover 11 and an output rotating shaft passing through the front end cover 11 from an inner cavity of the motor, the output rotating shaft includes an inner rotating shaft 2 and an outer rotating shaft 3 concentrically arranged, and a gear transmission mechanism is further disposed in the inner cavity of the motor, and the gear transmission mechanism is in transmission connection with the inner rotating shaft 2 and the outer rotating shaft 3.

According to another aspect of the present invention, a food processor is provided, which comprises an inner shaft stirring cutter assembly, an outer shaft stirring cutter assembly and a motor, wherein the inner shaft 2 drives the inner shaft stirring cutter assembly to rotate, and the outer shaft stirring cutter assembly is in transmission connection with the outer shaft 3. Wherein, the cooking machine can be broken wall machine, stock juice machine, juice extractor, soybean milk machine, mixer or other kinds of domestic appliance as long as be provided with the motor in this cooking machine to have the function of whipping food.

In the technical scheme of the invention, an inner rotating shaft 2 and an outer rotating shaft 3 which are concentrically arranged respectively drive an inner stirring cutter assembly and an outer stirring cutter assembly in a rotating manner, the inner stirring cutter assembly and the outer stirring cutter assembly are both positioned in a stirring cup body of a food processor, and an output rotating shaft is driven by the rotation of a rotor of a motor to drive double stirring cutter assemblies (namely the inner stirring cutter assembly and the outer stirring cutter assembly) to simultaneously operate so as to cut and stir food contained in the stirring cup body. Wherein, the biax drive mechanism who connects interior pivot 2 and outer pivot 3 of transmission sets up in the motor inner chamber, be about to biax drive mechanism integrated in the motor, thus, when assembly personnel equipment cooking machine, can protect biax drive mechanism effectively, thereby avoid appearing damaging or damaging the situation of biax drive mechanism because of assembly personnel's carelessness, and accomplish the back at cooking machine equipment, also can prevent effectively to produce the interference to biax drive assembly when other parts (like the electric wire) in the cooking machine appear taking off, thus, not only be favorable to improving reliability and life of biax drive mechanism in order to promote the reliability and the life of complete machine, but also can effectively improve cooking machine's yield. In addition, with the biax drive mechanism integration in the motor, still can effectively improve assembler's assembly speed, assembly personnel only need with the motor equipment that integrates the biax drive mechanism in the cooking machine promptly can, and do not need additionally to assemble biax drive mechanism again, like this, be favorable to improving the production efficiency of cooking machine by a wide margin. Of course, the integration has biax drive mechanism in the motor, can also make the cooking machine save extra inner space with holding biax drive mechanism, can reduce the inner space of the cooking machine that needs occupy effectively, makes the complete machine small and exquisite compactness more, and the storage space of complete machine has been little moreover, also is favorable to reducing the transportation and the storage cost of cooking machine.

Specifically, biax drive mechanism is gear drive, so sets up, sets up to other drive structures such as band pulley drive with biax drive mechanism, and gear drive has comparatively apparent technological effect. The following describes the technical effect of a double-shaft transmission mechanism as a gear transmission mechanism by taking a belt wheel transmission mechanism as a comparative example. Specifically, the gear transmission mechanism transmits through the mutual engagement of the gear and the gear, and a transmission belt is required to be arranged between the belt wheel and the belt wheel in the belt wheel transmission mechanism for transmission, so that compared with the belt wheel transmission mechanism, the gear transmission mechanism can enable the structure to be smaller and more compact due to the fact that the transmission belt is not required to be additionally arranged, and further the motor and even the whole machine are smaller and more compact. In addition, the transmission belt in the belt wheel transmission mechanism is gradually loosened in operation over the years, so that the transmission capability is reduced and even lost, and the gear transmission mechanism cannot be in the above situation, so that the gear transmission mechanism has higher operation reliability and longer service life compared with the belt wheel transmission mechanism. Of course, the transmission efficiency of the gear transmission mechanism is higher because the gear transmission mechanism does not need to be linked through a transmission belt.

Preferably, the motor comprises an inner rotor 13 and an outer stator 12, and the rotating shaft of the inner rotor 13 is the inner rotating shaft 2, as shown in fig. 1, so that the motor is smaller and more compact and occupies less space due to the inner rotor 13 being the rotor of the motor, compared to the motor which is the outer rotor. Further, the motor includes a rear end cap 14, and the rear end cap 14 is fixed to a rear end portion of the outer stator 12.

Specifically, gear drive includes gear support 4 and gear drive spare, gear drive spare holding is in gear support 4's support inner chamber, gear support 4 is arranged in the motor inner chamber and fixed mounting on front end housing 11, refer to fig. 1, so, through with gear support 4 and front end housing 11 fixed connection, can make gear support 4 and front end housing 11 form into a unified whole, be favorable to making the gear drive spare that is arranged in the support inner chamber to carry out the transmission steadily, and then make interior pivot 2 transmit rotatory kinetic energy to outer pivot 3 steadily through gear drive spare, even the transmission between interior pivot 2 and the outer pivot 3 is more steady, thus, be favorable to improving user's use experience. Of course, the transmission of the gear transmission part is stable, the operation noise generated during the gear meshing transmission can be effectively reduced, and the use experience of a user can be improved. In addition, since the gear transmission mechanism is accommodated in the inner cavity of the front end cover 11, the transmission efficiency of the rotor and the stator in the motor is not affected.

Further, referring to fig. 1, the gear holder 4 is an enclosed cubic holder. Specifically, for the reliability and the life of improvement gear drive spare, paint lubricating oil on gear drive spare usually, consequently, set up gear bracket 4 into closed support, can avoid effectively because lubricating oil on the gear drive spare drips or splashes and produce the interference to other parts in the motor, be favorable to improving the reliability and the life of motor. In addition, the shape of the gear holder 4 may be selected from other shapes such as a spherical shape, in addition to a cubic shape.

Preferably, the inner rotating shaft 2 sequentially passes through the bottom wall and the top wall of the gear bracket 4 and penetrates out of the top wall of the front end cover 11, the outer rotating shaft 3 is concentrically sleeved outside the inner rotating shaft 2 and extends out of the top wall of the gear bracket 4 and the top wall of the front end cover 11, referring to fig. 1 to 4, the gear transmission member comprises an inner shaft gear 51 and an outer shaft gear 52 fixedly sleeved on the outer peripheral walls of the inner rotating shaft 2 and the outer rotating shaft 3 respectively, and the inner shaft gear 51 is in transmission connection with the outer shaft gear 52.

Further, the gear transmission mechanism further includes an intermediate gear 53, and referring to fig. 1 to 5, the intermediate gear 53 is pivotally mounted to the side wall of the gear bracket 4 and engages with the inner shaft gear 51 and the outer shaft gear 52, respectively. So set up, can make outer shaft 3 for 2 antiport of interior pivot to make interior stirring knife tackle spare and outer shaft stirring knife tackle spare have opposite direction of rotation, like this, the positive and negative double-speed stack of two stirring knife tackle spares can greatly improve two stirring knife tackle spares to the cutting speed of food granule, is favorable to cutting food more finely broken bits, and then promotes the juice rate of food and drinks the taste. In other words, for the motor with the inner rotating shaft 2 and the outer rotating shaft 3 rotating in opposite directions, the rotating speed of the rotor 13 in the motor can be greatly reduced (for example, the rotating speed is reduced to 1/2 of the original rotating speed), and the food beating and crushing effect can also be achieved when the inner rotating shaft 2 and the outer rotating shaft 3 rotate in the same direction, so that the food processor can be provided with the original food crushing effect by reducing the rotating speed of the rotor, and the noise generated when the motor body operates can also be reduced by reducing the rotating speed of the rotor. In addition, the rotating speed of the rotor is reduced, the rotating speed of the double stirring knife assemblies can be correspondingly reduced, and the vibration noise generated when the double stirring knife assemblies cut food is reduced.

Specifically, the intermediate gear 53, the inner shaft gear 51, and the outer shaft gear 52 are all conical gears. The intermediate gear 53, the inner gear 51, and the outer gear 52 may be straight-tooth bevel gears, helical bevel gears, spiral bevel gears, or other suitable types of bevel gears.

In addition, referring to fig. 1, the horizontal inclination angles of the respective conical generatrices of the inner shaft gear 51 and the outer shaft gear 52 should each be not less than 45 ° and not more than 60 °. The concentric axes of the inner shaft gear 51 and the outer shaft gear 52 are perpendicular to the central axis of the intermediate gear 53, and the horizontal inclination angle of the conical generatrix of the inner shaft gear 51, the outer shaft gear 52 or the intermediate gear 53 means the acute angle included between the conical generatrix of the gears and the horizontal plane when the gears are horizontally arranged (i.e. the central axis of the gears is perpendicular to the horizontal plane), so that the sum of the horizontal inclination angle of the conical generatrix of the inner shaft gear 51 or the outer shaft gear 52 and the horizontal inclination angle of the conical generatrix of the intermediate gear 53 is 90 °, and thus, when the horizontal inclination angles of the respective conical generatrixes of the inner shaft gear 51 and the outer shaft gear 52 are both 60 °, the horizontal inclination angle of the conical generatrix of the intermediate gear 53 is 30 °. Preferably, the horizontal inclination angles of the respective conical generatrices of the inner and

outer gears

51, 52 are all 45 °, so that the inner gear 51, the outer gear 52 and the intermediate gear 53 can be designed to be universal, i.e. when assembling, an assembling person only needs to assemble the gears at the positions where the gears need to be assembled, and does not need to spend extra time and effort to manually determine the types of the gears and the corresponding assembling positions. In addition, the horizontal inclination angle of the respective conical generatrix of the inner shaft gear 51 and the outer shaft gear 52 is greater than 45 ° and not greater than 60 °, namely the horizontal inclination angle of the conical generatrix of the intermediate gear 53 is less than 45 °, thus, the size of the intermediate gear 53 can be designed to be smaller, thereby being beneficial to designing the height of the gear bracket 4 to be shorter, and further enabling the structure of the motor to be smaller and more compact, certainly, the required occupied space of the motor is small, and also being beneficial to reducing the storage space of the food processor, and further reducing the transportation and storage cost of the whole machine.

It should be noted that the gear transmission member can be provided with various suitable arrangements, such as the above-mentioned inner shaft gear 51 and outer shaft gear 52 are engaged and driven by the intermediate gear 53; or the inner rotating shaft 2 is provided with an external gear, the bottom end of the outer rotating shaft 3 is provided with an internal gear, the connecting gear is pivotally arranged on the bottom wall of the gear bracket 4, and the connecting gear is respectively meshed with the internal gear and the external gear, etc., which are not illustrated herein.

Preferably, the rotating speed ratio between the outer rotating shaft 3 and the inner rotating shaft 2 is not less than 1/5 and not more than 1, so that the double-stirring-knife assembly is beneficial to cutting food contained in the stirring cup body into finer particles, more food juice is squeezed out, the taste of the drink obtained by stirring is finer and finer, and the use experience of a user can be greatly improved. Further, the rotation speed ratio between the outer rotary shaft 3 and the inner rotary shaft 2 should be not less than 1/3 and not more than 3/4. It can be understood that the larger the rotation speed ratio between the outer rotating shaft 3 and the inner rotating shaft 2 is, the better the food beating and crushing effect of the double stirring knife assemblies is, but the speed of the food impacting the stirring cup body under the driving of the high-speed double stirring knife assemblies can be increased, and the overall operation noise is further increased, therefore, the rotation speed ratio parameter between the outer rotating shaft 3 and the inner rotating shaft 2 is preferably in the range, so that not only the better beating and crushing effect is achieved, but also the noise during the beating operation is smaller.

To facilitate the assembly of the gear transmission into the gear holder 4 by the assembler, preferably, with reference to fig. 1 to 5, the gear holder 4 comprises a first and a second holder half-section, taken along a half-section, which is defined by the central axis of the intermediate gear 53, which perpendicularly intersects, together with the concentric axes of the inner and

outer spindles

2, 3. Specifically, the outer rotating shaft 3 provided with the outer shaft gear 52 is sleeved on the inner rotating shaft 2 provided with the inner shaft gear 51, referring to fig. 2 and 3, and then the inner rotating shaft 2 and the outer rotating shaft 3 are installed in corresponding positions of the half-section part of the first bracket, referring to fig. 4; the intermediate gear 53 is engaged with the outer shaft gear 52 and the inner shaft gear 51, respectively, by using the external space, and then the intermediate gear 53 is rotated with the concentric axes of the outer rotary shaft 3 and the inner rotary shaft 2 as the central axis, and the intermediate gear 53 is fitted into the corresponding position of the first bracket half section, as shown in fig. 5; and finally, the second support half-section part and the first support half-section part are assembled to form a unified gear support 4, the assembly personnel can conveniently mount the gear transmission part into the gear support 4 by the breakthrough assembly mode, the operability is high, and the assembly efficiency is high.

Preferably, the inner rotating shaft 2 and the outer rotating shaft 3 are respectively provided with an inner bearing group 61 and an outer bearing group 62 on the outer peripheral walls thereof, the inner bearing group 61 and the outer bearing group 62 are respectively arranged on the bottom wall and the top wall of the gear support 4, the rotating shaft of the intermediate gear 53 is provided with an intermediate bearing group 63, and the intermediate bearing group 63 is mounted on the side wall of the gear support 4, referring to fig. 1 and 5, so that the inner rotating shaft 2 can be radially supported by arranging the inner bearing group 61 between the outer peripheral wall of the inner rotating shaft 2 and the gear support 4, which is beneficial to improving the rotation precision of the inner rotating shaft 2, thereby being beneficial to avoiding unstable transmission of the inner rotating shaft 2, and the arrangement can also effectively reduce the friction coefficient between the inner rotating shaft 2 and the gear support 4 in the rotating process, so as to promote the inner rotating shaft 2 to smoothly rotate in the gear support 4, and be beneficial to improving the use experience of users. Similarly, an outer bearing set 62 is arranged between the outer peripheral wall of the outer rotating shaft 3 and the gear support 4, and an intermediate bearing set 63 is arranged between the outer peripheral wall of the rotating shaft of the intermediate gear 53 and the gear support 4, which are both beneficial to improving the rotation precision of the rotating shafts of the outer rotating shaft 3 and the intermediate gear 53, and can also enable the rotating shafts of the outer rotating shaft 3 and the intermediate gear 53 to smoothly rotate in the gear support 4, thereby improving the use experience of users.

In addition, referring to fig. 1, the bottom end of the inner shaft gear 51 abuts against the top end of the inner bearing set 61, the top end of the outer shaft gear 52 abuts against the bottom end of the outer bearing set 62, and the intermediate gear 53 is respectively engaged with the inner shaft gear 51 and the outer shaft gear 52, so that the situation that the outer shaft gear 52 and the inner shaft gear 51 are displaced axially (i.e., move up and down) during the operation of the motor can be effectively prevented, which is beneficial to improving the transmission stability and reliability of the gear transmission mechanism, and further improving the reliability of the whole machine.

It should be particularly noted that other configurations and functions of the motor and the food processor according to the embodiments of the present invention are known to those skilled in the art, and are not described herein in detail to reduce redundancy.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. A motor is characterized by comprising a front end cover (11) and an output rotating shaft penetrating out of the front end cover (11) from an inner cavity of the motor, wherein the output rotating shaft comprises an inner rotating shaft (2) and an outer rotating shaft (3) which are concentrically arranged, and a gear transmission mechanism is further arranged in the inner cavity of the motor and is in transmission connection with the inner rotating shaft (2) and the outer rotating shaft (3);

the gear transmission mechanism comprises a gear support (4) and a gear transmission piece, the gear transmission piece is accommodated in a support inner cavity of the gear support (4), the gear support (4) is located in the motor inner cavity and is fixedly installed on the front end cover (11), and the gear support (4) is a closed support;

the gear bracket (4) comprises a first bracket half-section part and a second bracket half-section part which are split along a half-section;

the inner rotating shaft (2) sequentially penetrates through the bottom wall and the top wall of the gear support (4) and penetrates out of the top wall of the front end cover (11), the outer rotating shaft (3) is concentrically sleeved outside the inner rotating shaft (2) and extends out of the top wall of the gear support (4) and the top wall of the front end cover (11), the gear transmission part comprises an inner shaft gear (51) and an outer shaft gear (52) which are fixedly sleeved on the outer peripheral walls of the inner rotating shaft (2) and the outer rotating shaft (3) respectively, and the inner shaft gear (51) is in transmission connection with the outer shaft gear (52);

the gear transmission mechanism comprises an intermediate gear (53), the intermediate gear (53) is pivotally mounted on the side wall of the gear bracket (4) and is respectively meshed with the inner shaft gear (51) and the outer shaft gear (52);

the motor comprises an inner rotor (13) and an outer stator (12), wherein a rotating shaft of the inner rotor (13) is an inner rotating shaft (2).

2. The machine according to claim 1, characterised in that the gear holder (4) is a closed cube-shaped holder.

3. The machine according to claim 1, characterized in that the half section is defined by the central axis of the intermediate gear wheel (53) crossing perpendicularly together with the concentric axes of the inner and outer rotating shafts (2, 3).

4. An electric machine according to claim 1, characterized in that the respective peripheral walls of the inner shaft (2) and the outer shaft (3) are provided with an inner bearing set (61) and an outer bearing set (62), respectively, the inner bearing set (61) and the outer bearing set (62) being provided on the bottom wall and the top wall of the gear holder (4), respectively, and the shaft of the intermediate gear (53) is provided with an intermediate bearing set (63), the intermediate bearing set (63) being mounted on the side wall of the gear holder (4).

5. The electric machine according to claim 4, characterized in that the bottom end of the inner shaft gear (51) abuts the top end of the inner bearing set (61), the top end of the outer shaft gear (52) abuts the bottom end of the outer bearing set (62), and the intermediate gear (53) meshes with the inner shaft gear (51) and the outer shaft gear (52), respectively.

6. The machine according to claim 1, characterized in that the intermediate gear (53), the inner shaft gear (51) and the outer shaft gear (52) are all conical gears, and the horizontal inclination of the respective conical generatrices of the inner shaft gear (51) and the outer shaft gear (52) is not less than 45 ° and not more than 60 °.

7. A food processor, characterized in that, the food processor includes interior axle stirring knife tackle spare, outer axle stirring knife tackle spare and according to the motor of any one of claims 1-6, interior pivot (2) drive the rotation of interior axle stirring knife tackle spare, outer axle stirring knife tackle spare with outer pivot (3) transmission is connected.