CN207994876U - Motor and food cooking machine - Google Patents

Abstract

The utility model discloses a kind of motor and food cooking machines, the motor (100) includes mutually independent multiple rotor assemblies in motor casing (8) and the motor cavity being arranged in the motor casing (8), each rotor assembly is extended with corresponding motor shaft, and each motor shaft is mutually parallel.Multiple rotor assemblies in the motor of the utility model can realize mutual indepedent rotation by the fit structure of multiple stators or single stator, to eliminate the mechanical transmission structure between more parallel electrical machinery axis, the mechanicalness noise that motor generates during the work time is efficiently reduced, durability and job stability are substantially increased.

Description

Motor and food cooking machine

Technical field

The utility model is related to household electrical appliance technical fields, and in particular, to a kind of motor and food cooking machine.

Background technology

The technological deficiency of a variety of steerings or rotating speed cannot be exported simultaneously by being limited by existing motor, be had in the market parallel double The food cooking machine of cutter shaft structure generally can be anti-between two groups of mixing blade assemblies to realize by the way that rational mechanical mechanism is arranged To or differential speed rotation, to improve to the crush efficiencies of food materials.Wherein, which generally includes operator axis and secondary cutter shaft, main Cutter shaft is to directly drive rotation by the motor shaft of motor, and secondary cutter shaft then passes through the gear transmission structure between axis of operating Realize driven rotation.

However, said gear drive mechanism can make the noise of food cooking machine in the operating condition further increase, Seriously affect the usage experience of user；On the other hand, the complexity of structure is unfavorable for easily producing installation, is increasing to a certain degree Production difficulty and production cost are added.

Utility model content

For the drawbacks described above or deficiency of the prior art, the utility model provides a kind of motor and food cooking machine, energy It is enough to realize a variety of steerings or the output of rotating speed in the case of low noise-reduction and optimization drive mechanism, effectively improve food cooking machine Crush efficiency.

To achieve the above object, the utility model provides a kind of motor, and the motor includes that motor casing and setting exist Mutually independent multiple rotor assemblies in motor cavity in the motor casing, each rotor assembly are extended with corresponding motor Axis, each motor shaft are mutually parallel.

Optionally, the motor further includes that setting is in the motor cavity and matched one by one with multiple rotor assemblies Multiple field frame assemblies, be equipped in the stator core of the field frame assembly axially through rotor mounting hole, the corresponding rotor Assembly is installed in multiple rotor mounting holes.

Optionally, the motor includes sharing field frame assembly, the first rotor assembly, the second rotor assembly, first motor axis And second motor shaft, first turn for being equipped with axially through and being mutually parallel in the shared stator core of the shared field frame assembly Sub- mounting hole and the second rotor mounting hole are installed on described in the first rotor assembly driving in the first rotor mounting hole First motor axis rotates, and second rotor assembly being installed in the second rotor mounting hole drives second motor shaft Rotation.

Optionally, the shared stator core includes iron core outer ring portion, and the iron core outer ring is formed with opposed type cloth in portion It sets and the first stator tooth inwardly stretched out toward each other and the second stator tooth and is located at first stator tooth and the second stator The first rotor mounting hole between tooth and the second rotor mounting hole, the first rotor mounting hole and the second rotor mounting hole Hole center line connecting direction perpendicular to the opposed type of first stator tooth and the second stator tooth stretch out direction.

Optionally, first stator tooth is identical as the shape of the second stator tooth and about the hole line of centres pair Claim.

Optionally, the addendum line of first stator tooth include the first rotor mounting hole portion perimeter circular arc line and The portion perimeter circular arc line of the second rotor mounting hole.

Optionally, the tooth crest of first stator tooth include both sides tooth boot portion and towards the first rotor mounting hole with The center corners that intermediate air gap between second rotor mounting hole extends, the center corners are installed by the first rotor Tooth crest is formed described in the portion perimeter circular arc wire cutting of the portion perimeter circular arc line in hole and the second rotor mounting hole, described The center corners of first stator tooth is spaced disconnection, the tooth with the center corners of second stator tooth Periphery circular arc line of the boots portion in wrapping shape along the first rotor mounting hole or the second rotor mounting hole extends.

Optionally, first stator tooth is equipped with the first stator winding, and second stator tooth is equipped with the second stator winding, First stator winding covers the first rotor mounting hole and second with the stator field that second stator winding generates Rotor mounting hole, the stator field are in spindle distribution of shapes.

Optionally, the motor casing includes upper shell assembly and lower housing assembly, and the top of each motor shaft is stretched Go out the upper shell assembly and the lower housing assembly is stretched out in bottom end, the bottom end of each motor shaft is connected with one by one to be changed To device, the multiple carbon brush of each equal sliding contact of commutator.

In addition, the utility model additionally provides a kind of food cooking machine, the food cooking machine includes multiple stirring blade groups Part and above-mentioned motor, each mixing blade assembly are mounted on the top of each motor shaft and follow each institute correspondingly State motor shaft rotation.

Through the above technical solutions, can be rotated independently of each other provided with multiple in the motor casing of the motor of the utility model Rotor assembly so that two-by-two more parallel motor shafts need not by gear engage etc. mechanical drive modes can realize synchronization It is independent to pivot, it effectively reduces the operating noise of motor and improves its durability and job stability.

Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.

Description of the drawings

Attached drawing is to be used to provide a further understanding of the present invention, an and part for constitution instruction, and following Specific implementation mode be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings：

Fig. 1 is the vertical view of the stator core in specific embodiment of the present utility model；

Fig. 2 is the side view for the motor for using the stator core in Fig. 1；

Fig. 3 is the sectional view of the motor in Fig. 2；

Fig. 4 is the main sectional view of the motor in Fig. 2；

Fig. 5 is the cross-sectional view of the motor in Fig. 2；

Fig. 6 is the circuit diagram of the motor in Fig. 2.

Reference sign：

100 motors

1 field frame assembly, 2 the first rotor assembly

3 second rotor assembly, 4 commutator

5 carbon brush, 6 carbon brush holder

7 bearing, 8 motor casing

11 stator core, 12 first stator winding

13 second stator winding, 21 first motor axis

22 the first rotor winding, 31 second motor shaft

32 second rotor windings, 81 upper shell assembly

82 lower housing assemblies

111 first stator tooth, 112 second stator tooth

113 the first rotor mounting hole, 114 second rotor mounting hole

115 center corners, 116 tooth boot portion

117 iron core outer ring portion, 118 addendum line

Specific implementation mode

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein Described specific implementation mode is only used for describing and explaining the present invention, and is not intended to limit the utility model.

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually Be for direction shown in the drawings either for it is vertical, vertically or on gravity direction for each component mutual alignment Relationship description word.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

Present embodiments provide for a kind of stator cores 11.As shown in Figure 1, the stator core 11 includes iron core outer ring portion 117.The first stator tooth 111 and second for being formed with opposed type arrangement in the iron core outer ring portion 117 and inwardly stretching out toward each other Stator tooth 112, and between the first stator tooth 111 and the second stator tooth 112 and the first rotor arranged in parallel peace Fill hole 113 and the second rotor mounting hole 114.The hole line of centres side of the first rotor mounting hole 113 and the second rotor mounting hole 114 Direction is stretched out to perpendicular to the opposed type of the first stator tooth 111 and the second stator tooth 112.

When the winding mode of stator winding is reasonable, 11 unique stator odontoid of stator core can be guided effectively by fixed The magnetic induction line trend for the stator field that sub- winding energization generates, that is, enable the magnetic induction line to be distributed in first turn relatively independently In sub- mounting hole 113 and the second rotor mounting hole 114.In this way, in the first rotor mounting hole 113 and the second rotor mounting hole 114 In two rotor assemblies accordingly installing can independently of each other be pivoted under electromagnetic action, and put down from two rotor assemblies Two motor shafts that row stretches out need not be also driven by the mechanical structure of additional form, effectively low to have subtracted when motor works Noise.In addition, the structure of the stator core 11 of present embodiment is more simple compared with structures such as machine drivings, life is advantageously reduced Difficulty is produced, to improve production efficiency and reduce production cost.

Under some specific work condition environments, it may be necessary to which two motor shafts of motor all have roughly the same output work Rate.At this point, the first stator tooth 111 of stator core 11 and the second stator tooth 112 can be preferably arranged to shape it is identical and about Hole line of centres symmetrical structure, to make stator field be evenly distributed on the first rotor mounting hole 113 and the installation of the second rotor In hole 114, that is, there is roughly the same magnetic field shape and magnetic density.At this point, the global shape of stator core 11 is also more It is well-balanced, it is ensured that motor has the shape of preferable inner space utilization rate and generous beauty.

Specifically, the addendum line 118 of the first stator tooth 111 includes the portion perimeter circular arc line of the first rotor mounting hole 113 With the portion perimeter circular arc line of the second rotor mounting hole 114, and in the shape phase of the first stator tooth 111 and the second stator tooth 112 With and about the hole line of centres it is symmetrical in the case of, the tooth top wire shaped of the two is also identical.The shape of the addendum line can Make that there is smaller air gap between stator tooth and rotor assembly, is more advantageous to distribution of the stator field in rotor mounting hole.

Further, the tooth crest of the first stator tooth 111 is equipped with towards the first rotor mounting hole 113 and the second rotor and installs The center corners 115 that intermediate air gap between hole 114 extends.It should be noted that the center corners 115 is exactly by the At the top of the portion perimeter circular arc line cutting teeth of the portion perimeter circular arc line of one rotor mounting hole 113 and the second rotor mounting hole 114 And formed.When two portion perimeter circular arc lines intersect or is tangent, the top of center corners 115 is formed as pointed shape Shape；When two portion perimeter circular arc lines are non-intersecting, the top of center corners 115 is then formed as approximate angular shape, this When two portion perimeter circular arc lines between spacing should not be too large, it is no that it will cause stator fields at center corners 115 Magnetic density is excessive, to cause the stress between two rotor assemblies to interfere.

In addition, tooth crest is additionally provided with the tooth boot portion 116 for the both sides for being formed in center corners 115, the tooth boot portion 116 is in packet Extend along the periphery circular arc line of the first rotor mounting hole 113 or the second rotor mounting hole 114 around shape.The setting of tooth boot portion 116 Be conducive to expand overlay area of the stator field in the first rotor mounting hole 113 or the second rotor mounting hole 114, it is ensured that rotor Assembly can improve the job stability of motor sustainedly and stably rotate at high speed.

It can be seen from the above, to avoid two rotor assemblies in the first rotor mounting hole 113 and the second rotor mounting hole 114 Stress interference is generated, the stator field distribution at center corners 115 should be reduced to the greatest extent.In addition to as far as possible by center corners 115 are set as except tip shape, can also be by the middle apex of the heart of the center corners 115 of the first stator tooth 111 and the second stator tooth 112 Corner 115 is preferably arranged to the structure that interval disconnects.Under this structure, two can exist between apex of the heart corner 115 among the above compared with Big air gap, and the magnetic conductivity of air gap is smaller for the magnetic conductivity of stator core 11, to make the first rotor mounting hole 113 and the second transitional region between rotor mounting hole 114 almost without covering stator field, avoid two rotor assemblies it Between there is the case where stress interference, it is ensured that two rotor assemblies can pivot independently of each other.

But the spacing of two center corners 115 is also unsuitable too small, otherwise can be covered in the first rotor mounting hole 113 Or second effective stator field region in rotor mounting hole 114 becomes smaller.Hereby, in the present embodiment by the first stator tooth The spacing of 111 center corners 115 and the center corners 115 of the second stator tooth 112 is preferably arranged to 5mm~8mm.

Further, identical as the shape of the second stator tooth 112 in the first stator tooth 111 and symmetrical about the hole line of centres In the case of, two rotor assemblies being mounted in the first rotor mounting hole 113 and the second rotor mounting hole 114 in order to prevent exist It is interfered when rotation, in the radius R of the first rotor mounting hole 113, the radius r of the second rotor mounting hole 114 and hole It is set as meeting relationship between the length s of heart line：s>r+R.

In addition, present embodiment additionally provides a kind of field frame assembly 1.As shown in Figure 2 and Figure 5, which includes upper The stator core 11 stated.Wherein, the first stator tooth 111 of stator core 11 is equipped with the first stator winding 12, the second stator tooth 112 are equipped with the second stator winding 13.The stator field that first stator winding 12 and the second stator winding 13 generate is covered in the In one rotor mounting hole 113 and the second rotor mounting hole 114.Also, by the way that the first stator tooth 111 and the second stator is rationally arranged The shape of tooth 112, the stator field that stator winding generates can be respectively distributed to the first rotor mounting hole 113 in spindle shape In the second rotor mounting hole 114, so that in the first rotor mounting hole 113 and the second rotor mounting hole 114 Two rotors can pivot independently of each other.

Present embodiment additionally provides a kind of motor 100, as shown in Figures 2 to 5, the motor 100 include motor casing 8 and Mutually independent multiple rotor assemblies, each rotor assembly in motor cavity in motor casing 8 are set and are extended with corresponding motor Axis, each motor shaft are mutually parallel and corresponding rotor assembly can be followed to pivot.

The structure that multiple rotor assemblies of motor 100 pivot independently of each other can be realized a kind of, multiple rotor assemblies It is mounted in the rotor mounting hole of multiple field frame assemblies correspondingly, multiple field frame assembly is installed in the same motor casing In 8 and multiple rotor mounting holes are axial pass-through holes.By being arranged the structure of the more rotors of the multiple stators, more of motor 100 Transmission output need not be carried out by mechanical transmission mechanisms such as gear engagements between parallel electrical machinery axis, to reduce the machine of motor shaft Tool vibrates and mechanical wear, service life are effectively improved.But the structure wants the current overload ability of motor 100 Ask higher, and in the case of undertension, motor 100 is it is possible that certain root motor shaft rotates slow or intermittent stalling etc. Situation.In addition, in the case of coordinating running in multiple stator sames, the operating noise of motor 100 may not most be had The low of effect subtracts.

Further to solve the deficiency of above structure, present embodiment, which additionally provides another kind, can realize motor 100 Single stator and double-rotor structure that multiple rotor assemblies pivot independently of each other.In this configuration, motor 100 includes that shared stator is total At, the first rotor assembly 2, the second rotor assembly 3, first motor axis 21 and the second motor shaft 31.Wherein, the first rotor assembly It is equipped with the first rotor winding 22 in 2 rotor core, the second rotor windings 32 are equipped in the rotor core of the second rotor assembly 3.

In the present embodiment, said stator assembly 1 can be used in shared field frame assembly, and shares the shared fixed of field frame assembly Sub- iron core is said stator iron core 11.At this point, share field frame assembly shared stator core in be equipped with axially through and mutually Parallel the first rotor mounting hole 113 and the second rotor mounting hole 114.First turn be installed in the first rotor mounting hole 113 Sub- assembly 2 can drive first motor axis 21 to rotate, and the second rotor assembly 3 being installed in the second rotor mounting hole 114 then can The second motor shaft 31 is enough driven to rotate.As it can be seen that the motor 100 for using single stator and double-rotor structure in present embodiment can The deficiency for effectively making up the more rotor structures of above-mentioned multiple stators, has that operating noise is small, service life is long and job stability is high The advantages that.

Specifically, the motor casing 8 of motor 100 includes upper shell assembly 81 and lower housing assembly 82, the top of each motor shaft End stretches out upper shell assembly 81 and lower housing assembly 82 is stretched out in bottom end.Wherein, the top position of upper shell assembly 81 with And the bottom position of lower housing assembly 82 is both provided with the bearing 7 for supporting each motor shaft.The bottom end of each motor shaft is equal It is connected with commutator 4 one by one, the 4 equal sliding contact of each commutator is mounted on multiple carbon in multiple carbon brush holders 6 correspondingly Brush 5.

In addition, Fig. 6 show the one of which circuit connecting mode of motor 100.Wherein, the anode of power supply is connected to first The electric current of stator winding 12 flows into end, and the electric current outflow end shunting of the first stator winding 12 is connected to the first rotor assembly 2 and the On two rotor assemblies, a 3 corresponding carbon brush 5, the first rotor assembly 2 and the second rotor assembly 3 it is corresponding another The electric current that carbon brush 5 is then connected to the second stator winding 13 simultaneously flows into end, and the electric current outflow end of final second stator winding 13 connects It is connected to power cathode, to make motor 100 form complete electrical circuit.

When passing through the second rotor windings in the first rotor winding 22 and the second rotor assembly 3 in the first rotor assembly 2 When 32 current direction is identical, the first rotor assembly 2 is identical with the pivotal orientation of the second rotor assembly 3；When current direction is opposite When, the pivotal orientation of the first rotor assembly 2 and the second rotor assembly 3 is opposite.Determine in present embodiment it can be seen that using The motor 100 of sub- iron core 11 can make the first rotor assembly 2 and the second rotor assembly 3 in the same direction or to reversely rotate simultaneously, and electric Stream direction then can be by adjusting stator winding and between carbon brush the order of connection switch.

In addition, when identical with the above-mentioned size of current of the second rotor windings 32 by the first rotor winding 22, first turn Sub- assembly 2 and the second rotor assembly 3 to rotate at the same speed；When size of current difference, the first rotor assembly 2 and the second rotor assembly 3 with differential speed rotation.The size of electric current can be adjusted by changing the resistance of circuit, for example, can be by the way that add in circuit can The resistive element of adjusting or by change rotor windings coil turn come regulation resistance.

Foregoing circuit connection type should be regarded as the explanation of the function to the motor 100 of the utility model, without that should regard For limitations of the present invention.In other words, such as series excitation, shunt excitation can also be used between stator winding and rotor windings and are answered It the connection type for being suitable for different operating modes such as encourages, does not repeat one by one herein.Furthermore motor 100 can also be used and this embodiment party The identical permanent magnetism iron core of shape and structure of stator core 11 in formula, at this time motor 100 can be omitted the setting of stator winding, should Structure is suitable for permanent magnet DC motor.

Present embodiment additionally provides a kind of food cooking machine using above-mentioned motor 100.The food cooking machine further includes Multiple mixing blade assemblies, each mixing blade assembly are mounted on the top of each motor shaft and follow each electricity correspondingly Arbor rotates.For example, when food cooking machine is set there are two when mixing blade assembly, the knot of single stator and double-rotor can be used in motor 100 Structure, at this time two mixing blade assemblies can be separately mounted to the top of first motor axis 21 and the second motor shaft 31.Wherein, when first Motor shaft 21 and the second motor shaft 31 to reversely rotate or when differential speed rotation in the same direction, the rotating blade of food materials and mixing blade assembly it Between remain larger relative velocity, be conducive to improve food cooking machine crush efficiency.

Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail above in association with attached drawing Detail in the above embodiment can be to the skill of the utility model in the range of the technology design of the utility model Art scheme carries out a variety of simple variants, these simple variants belong to the scope of protection of the utility model.

It is further to note that specific technical features described in the above specific embodiments, in not lance It in the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the utility model is to each The possible combination of kind no longer separately illustrates.

In addition, arbitrary combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.

Claims (10)

1. a kind of motor, which is characterized in that the motor (100) includes motor casing (8) and setting in the motor casing (8) Motor cavity in mutually independent multiple rotor assemblies, each rotor assembly is extended with corresponding motor shaft, described in each Motor shaft is mutually parallel.

2. motor according to claim 1, which is characterized in that the motor (100) further includes being arranged in the motor cavity In and with multiple rotor assembly multiple field frame assemblies matched one by one, be equipped in the stator core of the field frame assembly axial The rotor mounting hole of perforation, the corresponding rotor assembly are installed in multiple rotor mounting holes.

3. motor according to claim 1, which is characterized in that the motor (100) include share field frame assembly, first turn Sub- assembly (2), the second rotor assembly (3), first motor axis (21) and the second motor shaft (31), the shared field frame assembly Share the first rotor mounting hole (113) and the second rotor mounting hole for being equipped with axially through and being mutually parallel in stator core (114), the first rotor assembly (2) being installed in the first rotor mounting hole (113) drives the first motor axis (21) it rotates, second rotor assembly (3) being installed in the second rotor mounting hole (114) drives second motor Axis (31) rotates.

4. motor according to claim 3, which is characterized in that the shared stator core includes iron core outer ring portion (117), Opposed type arrangement is formed in iron core outer ring portion (117) and the first stator tooth (111) for inwardly stretching out toward each other and the Two stator tooths (112) and the first rotor peace between first stator tooth (111) and the second stator tooth (112) Fill hole (113) and the second rotor mounting hole (114), the first rotor mounting hole (113) and the second rotor mounting hole (114) Hole center line connecting direction stretches out direction perpendicular to the opposed type of first stator tooth (111) and the second stator tooth (112).

5. motor according to claim 4, which is characterized in that first stator tooth (111) and second stator tooth (112) shape is identical and symmetrical about the hole line of centres.

6. motor according to claim 5, which is characterized in that the addendum line (118) of first stator tooth (111) includes The portion perimeter circular arc line of the first rotor mounting hole (113) and the portion perimeter of the second rotor mounting hole (114) circle Camber line.

7. motor according to claim 6, which is characterized in that the tooth crest of first stator tooth (111) includes both sides Tooth boot portion (116) and prolong towards the intermediate air gap between the first rotor mounting hole (113) and the second rotor mounting hole (114) The center corners (115) stretched, the center corners (115) are justified by the portion perimeter of the first rotor mounting hole (113) Tooth crest is formed described in the portion perimeter circular arc wire cutting of camber line and the second rotor mounting hole (114), first stator The center corners (115) of tooth (111) and the center corners (115) of second stator tooth (112) are to each other Partition is opened, and the tooth boot portion (116) is in wrapping shape along the first rotor mounting hole (113) or the second rotor mounting hole (114) Periphery circular arc line extend.

8. motor according to claim 4, which is characterized in that first stator tooth (111) is equipped with the first stator winding (12), second stator tooth (112) is equipped with the second stator winding (13), and first stator winding (12) is fixed with described second The stator field that sub- winding (13) generates covers the first rotor mounting hole (113) and the second rotor mounting hole (114), described Stator field is in spindle distribution of shapes.

9. the motor according to any one of claim 1~8, which is characterized in that the motor casing (8) includes upper shell The upper shell assembly (81) is stretched out on the top of assembly (81) and lower housing assembly (82), each motor shaft and bottom end is equal The lower housing assembly (82) is stretched out, the bottom end of each motor shaft is connected with commutator (4), each commutation one by one Device (4) the multiple carbon brush of sliding contact (5).

10. a kind of food cooking machine, which is characterized in that the food cooking machine includes multiple mixing blade assemblies and according to right It is required that the motor (100) described in any one of 1~9, each mixing blade assembly is mounted on each motor correspondingly The top of axis simultaneously follows each motor shaft rotation.