CN207835189U - Rotor catch and the motor for using the rotor catch - Google Patents

Abstract

The utility model discloses the motor of a kind of rotor catch and use the rotor catch, including catch ontology, the catch ontology is suitable for blending to flowing into the residue in motor cavity；The catch ontology includes catch extension, the outer profile of the catch extension be by outer arc section and inner arc section is formed in ox corner-shape structure, the outer arc section is smoothly transitted by multi-section circular arc to be formed.The catch extension being made of outer arc section and inner arc section of the utility model, so that two sections of arc sections of catch extension have preferably mechanical property compared with the prior art, and it can effectively reduce caused by the viscous force of liquid to flow transmission resistance, keep flow flowing smooth, avoids causing energy loss.

Description

Rotor catch and the motor for using the rotor catch

Technical field

The utility model is related to a kind of motors, belong to technical field of motors.

Background technology

In the electric machine structure that household electrical appliance use in the prior art, inside be both provided with catch, catch passes through injection molding After mode is fabricated to component, it is mounted on rotor shaft end, is suitable for and rotor rotates synchronously, plays to blend flowing into motor cavity The effect of the swill in portion, energy instant food residue discharge, is stuck to prevent motor.Existing catch has the following defects：

1, existing catch configuration design is unreasonable, influences the rotating torque of motor, while excessive to flow transmission resistance；

2, existing catch is mounted on rotor shaft end, and when motor instantaneous starting, vibration is larger, while increasing motor Whole vibration.

Invention content

Technical problem to be solved in the utility model is：Overcome the deficiencies of the prior art and provide a kind of rotor catch and Using the rotor structure of the rotor catch, transmission resistance of the catch to flow can be effectively reduced, keeps flow flowing smooth.

In order to solve the above-mentioned technical problem, the technical solution of the utility model is：A kind of rotor catch, including catch Ontology, the catch ontology are suitable for blending to flowing into the residue in motor cavity；

The catch ontology includes catch extension, and the outer profile of the catch extension is by outer arc section and inside What arc section was formed is in ox corner-shape structure, and the outer arc section is smoothly transitted by multi-section circular arc to be formed.

Further, the multi-section circular arc transition tangent to each other for forming outer arc section.

Further, the circular arc for forming the transition tangent to each other of outer arc section is the radius arcs such as non-.

Further, the tangent transition of circular arc of described outer arc Duan Yousan sections non-equal radiuses is formed, respectively the first circular arc Section F, the second arc section E and third arc section D, the catch ontology have rotation center O, the first arc section F closest In the rotation center of catch ontology, the second arc section E is between the first arc section F and third arc section D, third arc section D Farthest away from the rotation center of catch ontology.

Further, the arc length of the first arc section F is 6.2mm, prolongs cutting at the arbitrary point on the first arc section F Line and the point are to the angle between the perpendicular line of action of rotation center O connecting lines between 32 ° -34 °.

Further, the arc length of the second arc section E is 11.2mm, prolongs the tangent line at the arbitrary point on the second arc section E With the point to the angle between the perpendicular line of action of rotation center O connecting lines between 0 ° -32 °.

Further, the arc length of third arc section D is 11.4mm, prolongs the tangent line at the arbitrary point on the third arc section D It it is 0 ° with the point to the angle between the perpendicular line of action of rotation center O connecting lines.

Further, the inner arc section is formed by single hop circular arc.

Further, the arc length of the circular arc for constituting inner arc section is 10.6mm, is prolonged at the arbitrary point on the circular arc Tangent line and the point to the angle between the perpendicular line of action of rotation center O connecting lines between 18 ° -47 °.

Further, the rotor catch further includes forming integrated moulding with catch ontology.

The utility model also provides a kind of motor, including rotor catch and rotor,

The rotor catch is laid with rotor coaxial and is riveted on the rotor.

The motor further includes motor casing and the pump housing；

The pump housing includes upper pump casing and lower pump body, and the pump housing is mounted on one end of motor casing, the upper pump casing and lower pump body Pump chamber is collectively formed；

The rotor is installed between motor casing and lower pump body in motor casing；

The rotor catch is located in the pump chamber that upper pump casing and lower pump body are formed, and is mounted on rotor shaft end Portion, so that rotor catch is rotated together with rotor.

After using above-mentioned technical proposal, the utility model has the advantages that：

1) the catch extension being made of outer arc section and inner arc section of the utility model so that catch extension Two sections of arc sections compared with the prior art have preferably mechanical property stream is blended by catch extension when pump operating cycle Enter the residue in the pump housing, can more effectively blend into the article residue in the pump housing, and the pump housing is discharged under flow action, effectively Prevent motor from causing motor stuck because of winding residue or residue blocking；

2) the smooth arc structure of catch extension can be reduced effectively and is driven to flow caused by the viscous force of liquid Resistance keeps flow flowing smooth, avoids causing energy loss；

3) it is excessive to use continuous circular arc for the catch extension of the utility model, reduces boundary separation, reduce around Flow resistance power, reduces driving torque, reduces the vibration of motor, keeps operation more stable；

4) the magnetic pole zero pinch at the two poles of the earth NS of catch ontology and magnet ring is 90 °, and when motor load is run, magnet ring is obstructed Power is smaller, can effectively reduce more steady, the load running to reduction complete machine of the vibration of motor, electric motor starting and load running Vibration, serves vital.

Description of the drawings

Fig. 1 is the structural schematic diagram of the rotor catch of the prior art；

Fig. 2 is the structural schematic diagram of the rotor catch of the utility model；

Fig. 3 is the structural schematic diagram of the rotor catch of the utility model；

Fig. 4 is the flow velocity relation schematic diagram (directions A-B-C) of the flow at the rotor catch of the prior art；

Fig. 5 is the flow velocity relation schematic diagram (directions A-B-C) of the flow at the rotor catch of the utility model；

Fig. 6 is the flow velocity relation schematic diagram (radial direction) of the flow at the rotor catch of the prior art；

Fig. 7 is the flow velocity relation schematic diagram (radial direction) of the flow at the rotor catch of the utility model；

Fig. 8 is the overall structure diagram of the rotor structure of the utility model；

Fig. 9 is the exploded view of the rotor structure of the utility model；

Figure 10 is the installation diagram of the catch ontology of the utility model and the magnet ring of rotor；

Figure 11 is the schematic diagram for being riveted the magnet ring of catch ontology and rotor using riveting tool.

Specific implementation mode

In order to make the content of the utility model be easier to be clearly understood, below according to specific embodiment and combine attached Figure, is described in further detail the utility model.

Fig. 1 shows the concrete structure of catch ontology in the prior art.Catch on the catch ontology of the prior art prolongs The outer profile of extending portion is formed by outside curved section and inside curve section 72, also, forms two sections of curves of outside curved section 71 have certain angle., easily there is whirlpool on the outside in the catch extension of such structure at curved section, increase stream resistance (under It is described in detail).

As shown in Figure 2 and Figure 3, a kind of rotor catch 2, including catch ontology 24, the catch ontology 24 are suitable for convection current The residue entered in motor cavity is blended；

The catch ontology 24 includes catch extension 21, and the outer profile of the catch extension 21 is by outer arc section 22 and inner arc section 23 formed be in ox corner-shape structure, the outer arc section 22 is smoothly transitted by multi-section circular arc to be formed.

In the present embodiment, the multi-section circular arc transition tangent to each other for forming outer arc section 22.

In the present embodiment, the circular arc for forming 22 transition tangent to each other of outer arc section is the radius arcs such as non-.

Fig. 2 shows a kind of most preferably schemes of outer arc section 22.In the present embodiment, the catch ontology has rotation Center O, catch ontology 24 further include for the central connecting part with rotor axis connection, and rotation center O is central connecting part Center, catch extension 21 are centrally located interconnecting piece both sides, and using rotation center O as symmetry axis, and be centrosymmetric distribution.Institute It states outer arc section 22 to be formed by the tangent transition of circular arc of three sections of non-equal radiuses, respectively the first arc section F, the second arc section E With third arc section D, the first arc section F closest to catch ontology rotation center O, by the outer profile of rotation center O Extend outwardly, the second arc section E is between the first arc section F and third arc section D, and third arc section D is farthest away from catch sheet The rotation center O of body 24.

When catch ontology 24 rotates under armature spindle drive, every section of circular arc all can be by respectively different turning efforts Power, connecting line of the point relative to the rotation center O of catch ontology 24 each of on every section of circular arc, that is made at this point is vertical It is line of action in the vertical line of the connecting line, line of action and this section of circular arc are formed between the tangent line that this place is done with perseverance Determine the angle of range.

Fig. 2 shows the angles of the tangent line and line of action of three sections of arc sections of outer arc section；Fig. 3 shows inside circle The tangent line of segmental arc and the angle of line of action.

In the present embodiment, the arc length of the first arc section F is 6.2mm, prolongs the arbitrary point on the first arc section F The tangent line at place and the point are to the angle between the perpendicular line of action of rotation center O connecting lines between 32 ° -34 °.First 1 '=34 ° of minimum value the α 1=32 °, maximum value α of the angle between the tangent line and line of action at each point on arc section F, Minimum value is the angle of tangent line and line of action at two endpoints of the first arc section F, remaining point on circular arc with maximum value The tangent line at place and the angle of line of action (are free of endpoint value) within the scope of 32 ° -34 °.

In the present embodiment, the arc length of the second arc section E is 11.2mm, is prolonged at the arbitrary point on the second arc section E Tangent line and the point to the angle between the perpendicular line of action of rotation center O connecting lines between 0 ° -32 °.Second circle 2 '=32 ° of minimum value the α 2=0 °, maximum value α of the angle between the tangent line and line of action at each point on segmental arc E, α 2 ' It is the same angle with α 1；The folder for the tangent line and line of action at two endpoints that minimum value is the second arc section E with maximum value The angle at angle, the tangent line and line of action at remaining point on circular arc (is free of endpoint value) within the scope of 0 ° -32 °.

In the present embodiment, the arc length of third arc section D is 11.4mm, is prolonged at the arbitrary point on the third arc section D Tangent line and the point to the angle between the perpendicular line of action of rotation center O connecting lines be 0 °.On third arc section D The angle between tangent line and line of action at each point is always 0 °, i.e. 3 '=0 ° of α 3=α, α 3 ' are the same folder with α 2 Angle, i.e. third arc section D are using the rotation center O of catch ontology as the center of circle.

In the present embodiment, the inner arc section 23 is formed by single hop circular arc.The circle for constituting inner arc section 23 The arc length of arc is 10.6mm, and it is perpendicular to rotation center O connecting lines with the point to prolong tangent line at the arbitrary point on the circular arc Angle between line of action is between 18 ° -47 °.The folder between the tangent line and line of action at each point on the circular arc The maximum value β 1=47 ° at angle, minimum value β 2=18 °, minimum value and maximum value be tangent line at two endpoints of the arc section with The angle of the angle of line of action, the tangent line and line of action at remaining point on circular arc is being 18 ° -47 °.

Existing pressure p and flow velocity v of the convection current running body state on the outside curved section of the prior art at tri- points of A, B, C Between existing relationship analyzed：

Such as Fig. 4 and such as Fig. 5, the rotor catch of the utility model is designed to：X-axis positive direction is set as along the directions A-B-C to compare It is distinguished in prior art as follows：

1, before fluid moves to B points by A points, the area of flow section is gradually reduced, and the stream of fluid can be obtained by the conservation of mass Fast v is gradually increased, and can show that pressure p is gradually reduced by Bernoulli equation.The differential equation discussion of application boundary layer, that is, have：

In formula：P is water flow pressure in formula, and v is water velocity

Partial differential equation for pressure about the functional relation of camber line x indicates variation of the pressure along ABC sections of camber lines；

Partial differential equation of the water velocity about the functional relation of camber line x indicates change of the water velocity along ABC sections of camber lines Change；

2, when moving to B points, speed v reaches maximum value, and pressure p reaches minimum value；

3, C points are arrived after running to B points, flow section area becomes larger suddenly, and flow velocity v is made to reduce suddenly, and pressure p is prominent So become larger, just has：

As it can be seen that barometric gradient direction is opposite with directional velocity.Meanwhile fluid is also acted on by catch Surface adhesion force, It is gradual to slow down, until v=0.This rear leans on the fluid of near wall under the action of barometric gradient, generation and directional velocity phase Anti- movement, as adverse current, the liquid that exclusion upstream is come, make it be detached with wall surface, whirlpool occur, increase and stream resistance, such as In Fig. 4 shown in arrow.The utility model is smoothly transitted using arc section, reduces boundary separation, can be at anti-stop tab surface The flow velocity of flow first increase and reduce afterwards, stream resistance to reduce, fundamentally prevented the generation of adverse current.

Such as Fig. 6, Fig. 7, radially, due to the unexpected reduction of speed, the speed of radial direction is being increased perpendicular to A-B-C Gradient is spent, i.e.,：

In formula：V is flow flowing velocity, and h is borderless contact distance；

The differential equation for water velocity relative to interface contacts distance indicates that water velocity connects relative to interface The flowing velocity of synapsis changes；

Since resistance suffered by catch is influenced by the viscous force and velocity gradient of liquid, i.e.,：

In formula：μ is liquid sticky power；

Since the utility model reduces velocity gradient, resistance is compared with prior art smaller suffered by catch, to reduce Energy loss, reduce driving torque, reduce the vibration of motor.

The catch extension 21 being made of outer arc section 22 and inner arc section 23 of the utility model, can make two Section arc end part has preferably mechanical property compared with the prior art.When pump operating cycle, can more effectively blend into the pump housing Interior article residue, while the resistance caused by the viscous force of liquid can effectively be overcome to increase, it avoids causing energy loss.

In the present embodiment, the catch ontology 24 is moulding.

On the basis of above-mentioned rotor catch, the utility model additionally provides a kind of rotor structure, including rotor 4 and above-mentioned There is armature spindle, the armature spindle to be riveted with the catch ontology 24 for rotor catch 2, the rotor 4；

Further include motor casing 5 and the pump housing；

The pump housing includes upper pump casing 1 and lower pump body 3, and the pump housing is mounted on one end of motor casing 5, and the upper pump casing 1 is under Pump chamber is collectively formed in the pump housing 3；

The rotor 4 is installed between motor casing 5 and lower pump body 3 in motor casing 5；

The catch ontology 24 is located in the pump chamber that upper pump casing 1 and lower pump body 3 are formed, and is mounted on rotor shaft end Portion, so that catch ontology 24 is rotated together with rotor 4.

When installation, by the positioning device on riveting tool, catch ontology 24 and armature spindle 4 is riveted, catch is made Angle with the magnetic pole zero at the two poles of the earth NS of magnet ring is 90 °, as shown in Figure 10.

Catch ontology 24 is fixed on riveting tooling base 8, radially fixed immovable, magnet ring is fixed on tooling top, Positioning is realized by the annular magnet 9 installed in tooling, is kept the magnetic pole zero of magnet ring and catch ontology 24 in 90 °, is passed through press Push 41 riveting of magnet ring into catch ontology 24, as shown in figure 11.

When catch ontology 24 and the magnetic pole zero pinch of the poles NS of magnet ring are 90 °, when motor load is run, 41 institute of magnet ring It is smaller by resistance, can effectively reduce the vibration of motor, electric motor starting and load running it is more steady.It is born to reducing complete machine Operational shock is carried, is served vital.

Particular embodiments described above, the technical issues of the utility model is solved, technical solution and advantageous effect into It has gone further description, it should be understood that the foregoing is merely specific embodiment of the utility model, and has not had to In limitation the utility model, within the spirit and principle of the utility model, any modification, equivalent substitution and improvements done Deng should be included within the scope of protection of this utility model.

Claims (12)

1. a kind of rotor catch (2), it is characterised in that：Including catch ontology (24), the catch ontology (24) be suitable for pair The residue flowed into motor cavity is blended；

The catch ontology (24) includes catch extension (21), and the outer profile of the catch extension (21) is by outer arc What section (22) and inner arc section (23) were formed is in ox corner-shape structure, and the outer arc section (22) is smoothly transitted by multi-section circular arc It is formed.

2. rotor catch (2) according to claim 1, it is characterised in that：The formation outer arc section (22) Multi-section circular arc transition tangent to each other.

3. rotor catch (2) according to claim 2, it is characterised in that：The formation outer arc section (22) that The circular arc of this tangent transition is the radius arcs such as non-.

4. rotor catch (2) according to claim 3, it is characterised in that：The outer arc section (22) is by three sections The tangent transition of circular arc of non-equal radiuses is formed, respectively the first arc section F, the second arc section E and third arc section D, the gear There is piece ontology the rotation center of rotation center O, the first arc section F closest to catch ontology, the second arc section E to be located at Between first arc section F and third arc section D, rotation centers of the third arc section D farthest away from catch ontology.

5. rotor catch (2) according to claim 4, it is characterised in that：The arc length of the first arc section F is 6.2mm prolongs tangent line and the point to the perpendicular effect of rotation center O connecting lines at the arbitrary point on the first arc section F Angle between the line of force is between 32 ° -34 °.

6. rotor catch (2) according to claim 4, it is characterised in that：The arc length of second arc section E is 11.2mm prolongs tangent line and the point to the perpendicular effect of rotation center O connecting lines at the arbitrary point on the second arc section E Angle between the line of force is between 0 ° -32 °.

7. rotor catch (2) according to claim 4, it is characterised in that：The arc length of third arc section D is 11.4mm prolongs tangent line and the point to the perpendicular effect of rotation center O connecting lines at the arbitrary point on the third arc section D Angle between the line of force is 0 °.

8. rotor catch (2) according to claim 1, it is characterised in that：The inner arc section (23) is by single hop Circular arc is formed.

9. rotor catch (2) according to claim 8, it is characterised in that：The composition inner arc section (23) The arc length of circular arc is 10.6mm, prolongs tangent line at the arbitrary point on the circular arc and the point is perpendicular to rotation center O connecting lines Line of action between angle between 18 ° -47 °.

10. rotor catch (2) according to claim 1, it is characterised in that：The rotor catch (2) is also wrapped Include the moulding that one is formed with catch ontology (24).

11. a kind of motor, it is characterised in that：Including claims 1 to 10 any one of them rotor catch (2) and turn Sub (4),

The rotor catch (2) and rotor (4) are coaxial to be laid and is riveted on the rotor (4).

12. a kind of motor according to claim 11, it is characterised in that：

Further include motor casing (5) and the pump housing；

The pump housing includes upper pump casing (1) and lower pump body (3), and the pump housing is mounted on one end of motor casing (5), the upper pump casing (1) Pump chamber is collectively formed with lower pump body (3)；

The rotor (4) is located between motor casing (5) and lower pump body (3), and installs into motor casing (5)；

The rotor catch (2) is located in the pump chamber that upper pump casing (1) and lower pump body (3) are formed, and is mounted on rotor Shaft end, so that rotor catch (2) is rotated together with rotor (4).