CN211093884U - Motor, water knockout drum and dish washer that has this water knockout drum - Google Patents

Abstract

The present disclosure provides a motor, a water separator and a dish washer having the same, the motor including: a housing accommodating the coil assembly; a wire connection portion electrically connected with the coil assembly and configured to be electrically connected with an external connector; a terminal connection device connected to the housing and configured to receive the wire connection portion and the external connector and to electrically connect the wire connection portion with the external connector; and a separation member fixed to the terminal connecting device and surrounding the live part of the wire connecting portion together with the terminal connecting device, the terminal connecting device and the separation member being each made of a flame retardant material.

Description

Motor, water knockout drum and dish washer that has this water knockout drum

Technical Field

The utility model relates to a motor, water knockout drum and dish washer that has this water knockout drum.

Background

The small-sized motor is an important basic product widely applied in various fields such as factory automation, home life automation, office automation and the like. A typical small electric motor needs to be connected to an external connector by wiring to supply current to the stator windings of the motor, the wiring portion forming the live part of the motor. In order to meet safety regulations, flame retardant materials must be used around the live part of the motor, usually the motor mounting base or the rear cover, resulting in higher overall cost of the motor.

In addition, the motor and the external connector are usually connected in a transition manner by means of a PCB. This PCB board connection method causes a series of problems: firstly, the problem of circuit disconnection of the motor can be caused by unsmooth electrical connection between the PCB and the interior of the motor; secondly, the PCB is connected with the motor winding and the external connector by at least one welding process, so that the problems of welding cold joint, pad falling, welding bead splashing to the gear and the like can occur; finally, the key PCB process is labor-intensive in welding.

A dishwasher is a household appliance that requires cyclic switching between a plurality of water flow channels when operating. The diverter is typically connected to a diverter valve of the dishwasher for driving a cyclical switching of the direction of the water flow path within the diverter valve. To achieve accurate diversion control, a motor is typically employed to drive the diverter. The above problems also exist with the water separator and the dishwasher having the above motor.

SUMMERY OF THE UTILITY MODEL

At least one embodiment of the present disclosure provides a motor including: a housing that houses a coil assembly; a wire connection portion electrically connected with the coil assembly and configured to be electrically connected with an external connector; a terminal connection device connected to the housing and configured to receive the wire connection portion and the external connector and to electrically connect the wire connection portion with the external connector; and a separation member fixed to the terminal connecting device and surrounding the live part of the wire connecting portion together with the terminal connecting device, the terminal connecting device and the separation member being each made of a flame retardant material.

In some examples, the terminal connection device includes: a body comprising three body sidewalls arranged generally in a U-shape, the three body sidewalls defining a cavity; and a receptacle integrally formed with the body, the receptacle configured to receive an external connector.

In some examples, the wire portion includes: the contact pin is electrically connected with the coil assembly of the motor; a support member that supports and accommodates the contact pin and fixedly holds the contact pin on the coil block; and one or more terminals made of a conductive material, each terminal including a first terminal portion electrically connected with the pin and a second terminal portion configured to electrically connect the external connector, the terminal being mounted in the cavity of the main body, a live portion of the wire connection portion being the pin and the one or more terminals.

In some examples, the first terminal portion includes a first body defining a first insertion direction for inserting the pin, and a resilient contact extending from the first body and configured to be resiliently deformed as the pin is inserted to exert a contact force on the pin, and the second terminal portion includes a second body defining a second insertion direction into the external connector, each terminal further including a bent portion through which the first terminal portion and the second terminal portion are connected such that the first insertion direction is substantially perpendicular to the second insertion direction.

In some examples, the body has a detent disposed therein, and the isolation component is a shroud that is generally U-shaped and includes a first sidewall and a second sidewall opposite the first sidewall, the first sidewall being inserted into the detent.

In some examples, the isolation component is a cover plate fixedly mounted on the housing and configured to close an opening of the housing.

In some examples, the housing includes a recess on a side wall of the housing, the recess communicating with the opening of the housing, and the terminal connection device is fixedly mounted on a radially outer side of the housing and covers the recess.

In some examples, two opposing body sidewalls of the three body sidewalls include a snap extending from an edge thereof, the snap configured to snap connect with the support component.

At least one embodiment of the present disclosure provides a water separator, including: the above-mentioned motor; the water diversion driving shaft is used for switching the water flow direction of the dishwasher and is in transmission connection with the motor; and a water separator housing accommodating the water separating drive shaft, the water separator housing being fixedly connected to the motor, the wiring portion of the motor passing through the isolation member and the terminal connection device, being isolated from the water separator housing, the water separator housing being made of a non-flame retardant material.

In some examples, the diverter housing includes an upper end cap and a lower end cap that enclose to receive the diverter drive shaft, and the motor is secured to and snap-fit with the lower end cap.

In some examples, the water diverter further comprises: the water storage element is fixedly arranged on one side, facing the motor, of the lower end cover and is in fluid communication with the lower end cover.

In some examples, the bottom of the water storage element includes a water outlet hole and a water blocking member, the bottom of the water storage element is disposed to be inclined toward the water outlet hole such that excess water in the water storage element is discharged from the water outlet hole along the bottom of the water storage element, and the water blocking member is disposed near the water outlet hole and extends from the bottom of the water storage element.

At least one embodiment of the present disclosure provides a dishwasher, including: a shunt valve provided with a switching element and a plurality of water flow channels; and the water knockout drum, wherein the water knockout drive shaft of the water knockout drum is connected to the water knockout valve to drive the switching element to switch the water flow direction between the plurality of water flow channels.

Drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention.

Fig. 1 illustrates a perspective view of an electric machine according to an exemplary embodiment of the present disclosure;

FIG. 2 shows an exploded view of the motor shown in FIG. 1;

fig. 3A illustrates a perspective view of a terminal connection device according to an exemplary embodiment of the present disclosure;

fig. 3B is a perspective view showing another perspective of the terminal-connecting device shown in fig. 3A;

fig. 3C illustrates a perspective view of a terminal according to an exemplary embodiment of the present disclosure;

fig. 3D is a front view of the terminal shown in fig. 3C;

FIG. 3E is a cross-sectional view of the terminal shown in FIG. 3C;

fig. 3F is a partially enlarged view of the terminal shown in fig. 3E, showing an engaged state when the pin is engaged with the first terminal portion;

FIG. 4A illustrates a perspective view of a shroud according to an exemplary embodiment of the present disclosure;

FIG. 4B illustrates a perspective view of another perspective of a shroud according to an exemplary embodiment of the present disclosure;

FIG. 5 illustrates an installation schematic of a shroud according to an exemplary embodiment of the present disclosure;

FIG. 6 illustrates a cross-sectional view of the electric machine illustrated in FIG. 1, showing a close-up view of the shroud mating relationship;

FIG. 7A shows a side view of the motor shown in FIG. 1;

FIG. 7B shows a cross-sectional view along line C-C of FIG. 7A;

fig. 8 shows an exploded view of an electric machine according to another exemplary embodiment of the present disclosure;

figure 9 illustrates a perspective view of a water diverter according to an exemplary embodiment of the present disclosure;

figure 10 shows an exploded view of the diverter shown in figure 9;

FIG. 11A shows a top view of the diverter shown in FIG. 9;

FIG. 11B shows a cross-sectional view along line A-A of FIG. 11A;

FIG. 12 illustrates an exploded view of the lower head cover and water storage element according to an exemplary embodiment of the present disclosure;

FIG. 13A shows a side view of the lower head cover and water storage element according to an exemplary embodiment of the present disclosure;

FIG. 13B shows a cross-sectional view taken along line B-B of FIG. 13A;

FIG. 13C illustrates a cross-sectional view of a water storage element according to an exemplary embodiment of the present disclosure;

FIG. 14A illustrates a perspective view of a drop drive shaft according to an exemplary embodiment of the present disclosure;

figure 14B illustrates a perspective view of a water diversion drive shaft, a photoelectric switch, and a PCB board according to an exemplary embodiment of the present disclosure;

fig. 15 illustrates a schematic connection relationship diagram of a dishwasher according to an exemplary embodiment of the present disclosure.

List of reference numerals

1 casing

11 cover plate

12 opening

13 notch

14 lug

2 coil component

21 skeleton

22 enameled wire

3 wire connecting part

31 pin

32 support member

4 external connector

5 terminal connecting device

51 body

511 hollow space

512 locating slot

513,514,515 body side walls

516 snap fastener

52 terminal

521 first terminal part

5211 first body

5212 elastic contact

5213 the limiting part

131 side wall

132 top wall

133 pin cavity

5214 bottom wall

522 second terminal portion

5221 second body

211 second side wall

523 bending part

5231 incision is made

53 socket

6 isolating component

61 protective cover

611 first side wall

612 second side wall

613 top wall

614 ribs

615 intermediate wall

7 divide water drive shaft

71 rotating shaft

72 baffle

73 water outlet

74 water retaining rib

8 water knockout drum casing

81 upper end cap

82 lower end cap

83 engaging structure

831 elastic part

832 supporting part

833 barb

84 stop

85 hook

9 Water storage element

91 water outlet

92 water stop

93 engaging groove

10 photoelectric switch

20 rotor assembly

30 PCB board

40 switching element

50 water flow channel

100 motor

101 output shaft

102 transmission part

200 water knockout drum

300 dishwasher

400 shunt valve

Detailed Description

In order to make the technical solution of the present invention, its purpose, technical solution and advantages become clearer, the drawings of the embodiments of the present invention will be combined hereinafter, and the technical solution of the embodiments of the present invention will be clearly and completely described. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

It should be noted that the term "flame retardant material" as used in the present disclosure refers to a material that does not easily burn or can self-extinguish, and particularly to a flame retardant material that meets the standard of GB 20286-2006. Commonly used flame retardant materials may be engineering plastic materials or rubber materials. The flame retardant material is generally prepared by adding a flame retardant into a non-flame retardant material so that the non-flame retardant material has flame retardant performance. The price of the flame retardant is higher, so the price of the flame retardant material is higher than that of the non-flame retardant material, and the requirements of the flame retardant material on the manufacturing process are correspondingly increased. In addition, the metal material itself has flame retardant properties, and can also be used as a flame retardant material. Common metallic materials include, but are not limited to, copper, aluminum, iron, copper alloys, aluminum alloys, iron alloys, and the like.

The "non-flame retardant material" referred to in the present disclosure may include, for example, common engineering plastics that are not treated with a flame retardant, such as Polycarbonate (PC), Polyamide (PA), Polyoxymethylene (POM), polyphenylene oxide (PPO), polyester (PET, PBT), polyphenylene sulfide (PPS), and polyarylate or acrylonitrile-butadiene-styrene copolymer (ABS), etc., and the present disclosure is not limited thereto.

A typical motor comprises a body, a coil frame, a contact pin arranged on the coil frame, a motor control end, a mounting base, a rear cover and the like. When the motor is assembled, the motor control end is welded and assembled with the pin feet on the coil frame of the motor, then the motor control end and the body are installed between the rear cover and the installation base, and the motor control end is connected with the electric connector by penetrating through the rear cover.

At this moment, the electrified part of the motor is a contact pin and a motor control end, and the upper end and the lower end of the electrified part are respectively close to or directly contacted with the mounting base and the rear cover. In order to meet the safety requirement, the parts around the motor charged body must be made of flame-retardant materials, so the surrounding of the contact pin and the motor control end must be made of flame-retardant materials. Therefore, the rear cover and the mounting base must both use flame retardant materials, resulting in a high manufacturing cost of the motor.

In addition, the motor contact pin and the external connector are in transitional connection in a PCB mode, and a series of problems can be caused by welding the PCB and the contact pin in the motor, such as the problems of welding cold joint, pad falling off, welding bead splashing to the gear and the like; in addition, the labor cost of the welding process is high, which also results in high overall manufacturing cost of the motor.

A dishwasher is a household appliance that requires cyclic switching between a plurality of water flow channels when operating. The diverter is typically connected to a diverter valve of the dishwasher for driving a cyclical switching of the direction of the water flow path within the diverter valve. To achieve accurate diversion control, a motor is typically employed to drive the diverter. The above problems also exist with the water separator and the dishwasher having the above motor.

At least one embodiment of the present disclosure provides a motor 100, the motor 100 including: a housing 1, a coil block 2, a wire connecting portion 3, a terminal connecting device 5, and a spacer member 6. The housing 1 may house a coil assembly 2. The wire connection portion 3 is electrically connected to the coil block 2 and is configured to be electrically connected to the external connector 4. The terminal connection device 5 is connected to the housing 1 and configured to receive the wire connection portion 3 and the external connector 4 such that the wire connection portion 3 is electrically connected with the external connector 4. The spacer member 6 is fixed to the terminal-connecting means 5 and surrounds the live portion of the wire connecting portion 3 together with the terminal-connecting means 5, and the terminal-connecting means 5 and the spacer member 6 are each made of a flame retardant material.

At least one embodiment of the present disclosure provides the motor 100 that only requires the terminal connecting device 5 and the isolation member 6 to be made of flame retardant materials with high cost, thereby reducing the material cost. In addition, the wiring scheme that the terminal 52 and the contact pin 31 are elastically connected is adopted in the motor, so that the welding process is avoided inside the motor, and the technical problems that the installation is complicated and welding is caused by the scheme of switching through a PCB are avoided.

In addition, the water separator 200 and the dishwasher 300 having the same 200 according to at least one embodiment of the present disclosure include the motor 100 described above, and thus have the same technical advantages.

An electric machine 100 according to an embodiment of the present disclosure will be described below with reference to fig. 1 to 7B. Fig. 1 illustrates a perspective view of a motor according to an exemplary embodiment of the present disclosure. As shown in fig. 1, the motor 100 may include a housing 1, an output shaft 101, a cover plate 11, and a terminal connection device 5.

The housing 1 may house the coil assembly 2, the rotor assembly 20, the wire connecting portion 3, etc. of the motor 100, and the housing 1 may include lugs 14 for snap-in connection to the water separator.

The terminal-connecting device 5 is connected to the housing 1, and in the present embodiment, the terminal-connecting device 5 is detachably connected to the housing 1. In other embodiments the terminal connection device 5 may also be fixedly and non-detachably connected to the housing 1. The terminal-connecting device 5 may include a main body 51 and a socket 53 integrally formed with the main body 51. The body 51 includes three body sidewalls 513,514,515 in a generally U-shaped arrangement, the three body sidewalls 513,514,515 defining the cavity 511. The socket 53 is integrally formed with the main body 51 and is configured to receive the external connector 4.

The terminal portion 3 includes a pin 31 and a support member 32, the pin 31 is electrically connected to the coil block 2 of the motor, and the pin 31 is electrically connected to the terminal 52. The support member 32 supports and accommodates the pin 31 and fixedly holds the pin 31 on the coil block 2.

The motor output shaft 101 may be connected to the water knockout drive shaft 7 of the water knockout vessel 200 to output the driving force of the motor 100 to the water knockout vessel 200.

The cover plate 11 is fixedly installed on the housing 1 and configured to close the opening 12 of the housing 1, thereby physically isolating the motor 100 from the outside. The cover plate 11 comprises a cover plate opening through which the motor output shaft 101 can project outwards and is rotatably fixedly arranged on the cover plate 11.

Fig. 2 shows an exploded view of the electric machine 100 shown in fig. 1. As shown in fig. 2, the housing 1 is provided with an opening 12, and typical components of the motor 100, such as the rotor assembly 20, the coil assembly 2, and the transmission part 102, etc., may be received in the housing 1 through the opening 12. Specifically, the coil block 2 may include a bobbin 21 and an enamel wire 22 wound on the bobbin 21. The transmission member 102 is configured to output the rotation of the output shaft of the rotor assembly 20 to the output shaft 101 after being decelerated, and the transmission member 102 may be a deceleration gear assembly commonly used in the art.

In the present embodiment, the cover plate 11 may be made of a metal material in consideration that the cover plate 11 requires sufficient mechanical strength to fix the gear shaft of the reduction gear assembly of the transmission member 102. Furthermore, in other embodiments, the cover plate 11 may be eliminated and the lower end cover 82 may be used to secure the motor output shaft 101.

The wiring portion 3 includes a pin 31, a support member 32, and one or more terminals 52 made of a conductive material, the pin 31 being electrically connected to the coil block 2, specifically, to the enamel wire 22. The pins 31 may be mounted on the coil block 2 and electrically connected to the coil block 2 by mounting means known in the art, for example, by soldering, and will not be described herein. The support member 32 is fixedly provided on the coil block 2, and is configured to support and accommodate the pins 31, and to fixedly hold the pins 31 on the coil block 2, specifically, on the bobbin 21 of the coil block 2.

Each terminal 52 includes a first terminal portion 521 and a second terminal portion 522, the first terminal portion 521 is electrically connected to the pin 31, the second terminal portion 522 is configured to be electrically connected to the external connector 4, and the terminal 52 is mounted in the cavity 511 of the body 51. The live portions of the wire connecting portion 3 are pins 31 and one or more terminals 52. For example, in the present embodiment, the number of the terminals 52 may be two.

The terminal connection device 5 is detachably provided on the housing 1 and can receive the wire connection portion 3 and the external connector 4 of the motor 100 so that the wire connection portion 3 is electrically connected with the external connector 4. The terminal-connecting device 5 may include a main body 51 and a socket 53 integrally formed with the main body 51. Fig. 3A illustrates a perspective view of a terminal-connecting device 5 according to an exemplary embodiment of the present disclosure, and fig. 3B illustrates a perspective view of another perspective view of the terminal-connecting device 5 illustrated in fig. 3A. As shown in fig. 3A and 3B, the body 51 includes three body sidewalls 513,514,515 that are generally U-shaped, three body sidewalls 513,514,515 defining the cavity 511, and two opposing body sidewalls 513,515 of the body 51 each provided with a positioning slot 512. The receptacle 53 is configured to receive the external connector 4.

The housing 1 further includes a recess 13 on a side wall of the housing 1, the recess 13 communicating with the opening 12 of the housing 1, and the terminal-connecting device 5 is fixedly mounted on a radially outer side of the housing 1 and covers the recess 13. The motor 100 according to at least one embodiment of the present disclosure does not require a back cover, which is replaced with the terminal connection device 5, and thus, material can be saved, cost can be further reduced, and reliability of electrical connection can be ensured.

Fig. 3C illustrates a perspective view of the terminal 52 according to an exemplary embodiment of the present disclosure, fig. 3D is a front view of the terminal illustrated in fig. 3C, fig. 3E is a sectional view of the terminal illustrated in fig. 3C, and fig. 3F is a partially enlarged view of the terminal illustrated in fig. 3E, which illustrates an engagement state when a pin is engaged with the first terminal portion.

The terminal 52 includes a first terminal portion 521 and a second terminal portion 522, the first terminal portion 521 includes a first body 5211 and an elastic contact 5212, the first body 5211 defines a first insertion direction a for inserting the pin 31, the elastic contact 5212 extends from the first body 5211, and the elastic contact 5212 is configured to be elastically deformed as the pin 31 is inserted to exert a contact force on the pin 31. The second terminal portion 522 includes a second body 5221, the second body 5221 defining a second insertion direction B into the external connector 4. The terminal 52 further includes a bent portion 523, and the first terminal portion 521 and the second terminal portion 522 are connected by the bent portion 523 such that the first insertion direction a is substantially perpendicular to the second insertion direction B.

In the present embodiment, the first terminal portion 521, the second terminal portion 522, and the bent portion 523 are integrally formed, for example, by press-forming. The first terminal portion 521 and the second terminal portion 522 are connected by a bent portion 523, and the bent portion 523 is provided on either side surface of an end of the first body 5211 opposite to the elastic contact piece 5212, in this embodiment, the bent portion 523 is provided at the end opposite to the elastic contact piece 5212 and is located on a side surface facing outward of the paper surface in fig. 3C, and the bent portion 523 may also be provided at other positions, for example, a side surface facing inward of the paper surface, or an end side surface facing the elastic contact piece 5212, which will be described in a later embodiment. The bent portion 523 has a bent right-angle shape, and thus bends the first terminal portion 521 and the second terminal portion 522 to be substantially perpendicular, so that the first insertion direction a is substantially perpendicular to the second insertion direction B. The bent portion 523 may further have a notch 5231, which may simplify the structure and save material.

It should be noted that, in the present invention, "substantially perpendicular" means being 90 degrees or approximately equal to 90 degrees, and it is very difficult to realize complete perpendicularity between two components, i.e. precisely 90 degrees, in consideration of actual production conditions, but in practical application, a certain deviation from 90 degrees, for example, within plus or minus 5 degrees, can also realize the technical effects of the present invention.

The terminal 52 is made of a conductive material commonly used in the art, such as copper, aluminum, copper alloy or aluminum alloy, preferably made of copper or copper alloy, and has a thickness of 0.2mm to 0.5mm, such as 0.3mm, and is preferably integrally formed by stamping with a die. The material thickness is selected primarily with consideration of the following factors: if the thickness of the material is too thin, for example, less than 0.2mm, the mechanical strength of the manufactured terminal is too weak to meet the requirement of the terminal insertion strength; if the material thickness is too thick, for example, greater than 0.5mm, the elastic coefficient of the elastic contact 5212 is too large, which results in a large assembly difficulty, and the overall size of the terminal inevitably increases due to the increased material thickness, which increases the entire installation space and wastes space and material cost.

In this embodiment, the first terminal portion 521 further includes at least one limiting portion 5213, preferably two limiting portions 5213, bent from the side of the first body 5211, each limiting portion 5213 includes a side wall 131 and a top wall 132, and the limiting portions 5213 and the first body 5211 surround to form a pin cavity 133 for receiving the pin 31.

The elastic contact 5212 includes an elastic arm 121, a contact protrusion 122, and a support arm 123, the elastic arm 121 being bent with respect to the first insertion direction a to form a first included angle θ, the elastic arm being configured to be bent and deformed toward a direction in which the first included angle θ is decreased as the pin is inserted to generate a contact force, and the contact protrusion 122 being configured to contact the pin 31 to apply the contact force. Specifically, the contact protrusion 122 of the elastic contact 5212 exerts a component force F of the contact force on the pin 20 perpendicular to the first insertion direction a.

In the present embodiment, the first body 5211 includes a bottom wall 5214, and the elastic contact 5212 is bent and extended from the bottom wall 5214 along the first insertion direction a, so that when the pin 31 is inserted into the pin cavity 133 along the first insertion direction a, an elastic connection is formed between the pin 31 and the top wall 132 and the contact protrusion 122.

The support arm 123 extends from the contact protrusion 122 and forms a second angle α with the resilient arm 121, such that the resilient arm 121 and the support arm 123 form a substantially V-shape, as shown in the figure, the support arm 123 has a height a perpendicular to the first insertion direction a, the pin cavity 133 has a height b perpendicular to the first insertion direction a, b may also be defined as the distance between the bottom surface of the top wall 132 and the surface of the first body 5211, the maximum dimension of the cross-section of the pin 31 is c, the above parameters are designed to satisfy the relationship that b-a < c and a < b, in practical applications, the dimension of the pin 31 is given, so c may be considered constant, the size of the parameters a and b may be adjusted according to the above relationship, the size of b-a may be considered as the gap between the contact protrusion 122 and the top wall 132 in the non-inserted state, while satisfying the relationship that b-a < c may ensure that the resilient contact element 5212 is capable of driving the resilient contact element 5212, in particular the resilient arm 121, deforming such that the first angle 122 becomes closely smaller, the contact element 122, namely the contact element 122 may be deformed by an angle 5212, and may be designed to prevent the resilient contact element from being inserted into the contact element 5212, such as a contact element 5215, the contact element 5212 may be easily deformed by a contact element 5215, and may be considered by a person skilled in the range of a contact element 5215, may be considered as a contact element 5215, a contact element 5231, a contact element 5215, a contact element 5231, a contact element 5230, a contact element 5231 may be considered to prevent contact element 5231, a contact element 5215, a contact element 5231 may be considered to prevent contact element 5231, a contact element 5215.

The cross-sectional shape of the second body 5221 of the second terminal portion 522 may be rectangular or U-shaped, including at least two second side walls 211 extending in the second insertion direction B for being configured to be electrically connected with electrical contact portions of the external connector 4 when the external connector 4 is inserted. In particular, the second body 5221 may include two second sidewalls 211. When the external connector is a RAST connector, the electrical contact portion may be two contact blades, and the two second side walls 211 are used to engage with the two contact blades of the external connector 4 respectively when the external connector 4 is inserted, and in the present embodiment, the second body 5221 has a U-shaped cross-sectional shape and extends along the second insertion direction B.

The above describes the construction of the terminal 52 according to an exemplary embodiment, and the following briefly describes the method of manufacturing the terminal 52 according to this embodiment, which is merely exemplary, and the terminal 52 may be manufactured by other conventional methods in the art. First, a copper plate material having a thickness of 0.3mm is provided, and the first terminal portion 521, the second terminal portion 522, and the bent portion 523 of the terminal 52 are press-formed on the copper plate while they are in the same plane. Next, various feature portions of the first terminal portion 521 and the second terminal portion 522, including but not limited to the elastic contact piece 5212, the elastic arm 121, the contact protrusion 122, the support arm 123, the stopper portion 5213, the second side wall 21, and the like, are bent out. Finally, the bent portion 3 is bent by 90 degrees so that the first terminal portion 1 is perpendicular to the second terminal portion 2, thereby forming the terminal 52 of this embodiment.

In the present embodiment, the spacer member 6 is a shroud 61, fig. 4A shows a perspective view of the shroud 61 according to an exemplary embodiment of the present disclosure, and fig. 4B shows a perspective view of another perspective view of the shroud 61 according to an exemplary embodiment of the present disclosure. As shown in fig. 4A and 4B, the shroud 61 is substantially U-shaped, and includes a first side wall 611 and a second side wall 612 opposite to the first side wall 611, and the first side wall 611 is inserted into the positioning groove 512. The first side wall 611 is inserted into the positioning groove 512, and the hood 61 can be positioned on the main body 51 of the terminal-connecting device 5. In this embodiment, the shroud further comprises a top wall 613, a bead 614 and an intermediate wall 615 connecting the second side wall 612 and the top wall 613, the bead 614 extending within the shroud 61. The rib 614 can isolate the heads of two adjacent pins 31, and prevent the distance between the residual ends of the enameled wire 22 wound around the heads of the pins 31 from being too small or short-circuited. In addition, the ribs 614 can also increase the strength of the shield 61 and reduce the deformation of the plastic part of the shield 61. The disclosure is not limited thereto, and the shield 61 may have other shapes or structures as long as the charged portion for closing the cavity 511 is realized.

Referring to fig. 4A and 5, the shroud 61 is generally U-shaped and may be configured to surround the charged portion of the cavity 511 of the body 51. Specifically, shroud 61 surrounds the portion of body 51 within cavity 511 where terminals 52 are electrically connected to pins 31.

For example, the shroud 61 and the main body 51 are both made of a flame retardant material. In the electrical connection mode shown in the present embodiment, the terminal 52 and the pin 31 form a live part of the wiring connection part 3 when the motor 100 is in operation, and the parts around the live part, namely the shield 61 and the main body 51, are made of flame retardant materials, so that the safety requirement is met. Meanwhile, as can be seen from the figure, the size of either the main body 51 or the shroud 61 is small compared to the size of the housing 1 or the water knockout housing 8, so that the use of flame retardant materials can be saved as a whole, thereby reducing the material cost.

Fig. 5 shows a schematic view of the mounting of a shroud 61 according to an exemplary embodiment of the present disclosure. At the time of mounting, the terminal 52 is first mounted in the main body 51 and electrically connected to the pin 31 of the terminal portion 3. Next, the shield 61 is inserted into the main body 51 in the arrow direction in fig. 5, and the first side wall 611 of the shield 61 is inserted into the positioning groove 512 and engaged with the positioning groove 512.

Fig. 6 shows a cross-sectional view of the electric machine of fig. 1, showing a close-up view of the shroud-mating relationship. The relationship between the assembled components can be seen in the enlarged partial view of fig. 6. as seen from fig. 6, the shroud 61 encloses the portion of the cavity 511 of the main body 51 where the terminal 52 is electrically connected to the pin 31, i.e., the live portion of the wiring portion 3 of the motor 100.

Fig. 7A shows a side view of the motor shown in fig. 1, and fig. 7B shows a cross-sectional view taken along line C-C of fig. 7A. Two opposing body sidewalls 513,515 of the three body sidewalls 513,514,515 comprise a catch 516 extending from an edge thereof, the catch 516 being configured to snap-connect with the support member 32. In the present embodiment, as shown in fig. 3A, the catch 516 extends obliquely from the two opposing body side walls 513,515 toward the opening direction of the three body side walls 513,514,515 so as to be able to snap-engage with the corresponding portion of the support member 32.

In actual assembly, the pin 31 is first connected to the terminal 52, the latch 516 is latched to the support member 32, and the main body 51 of the terminal connecting device 5 is mounted to the housing 1. At this time, the outer surface of the catch 516 of the main body 51 of the terminal-connecting device 5 is fitted with the inner surface at the edge of the notch 13 of the housing 1, as shown in fig. 7B.

Fig. 8 illustrates an exploded view of a motor 100 according to another exemplary embodiment of the present disclosure. Only the differences between this embodiment and the embodiment shown in fig. 1 to 7B will be described below, and the similarities will not be described again. The spacer member 6 of the present embodiment is different from the embodiment shown in fig. 1 to 7B. Specifically, the spacer member 6 is a cover plate 11 fixedly mounted on the housing 1 and configured to close the opening 12 of the housing 1. In the present embodiment, the cover plate 11 may be made of a metal material.

In this embodiment, the same structure of the shield 61 as in the previous embodiment may or may not be used. The shield 61 is optional but not necessary because the live part of the wire connecting portion 3 is already surrounded by the cover plate 11 and the terminal connecting means 5 when the cover plate 11 is made of a flame retardant material.

At least one embodiment of the present disclosure provides a water separator 200, including: the motor 100 as described above; a water diversion driving shaft 7 for switching the water flow direction of the dishwasher 300, the water diversion driving shaft 7 being in transmission connection with the motor 100; and a water knockout vessel housing 8, the water knockout vessel housing 8 accommodating the water knockout drive shaft 7 and being fixedly connected with the motor 100, the wiring portion 3 of the motor 100 being isolated from the water knockout vessel housing 8 by the isolation member 6, the water knockout vessel housing 8 being made of a non-flame retardant material.

Fig. 9 illustrates a perspective view of the water diverter 200 according to an exemplary embodiment of the present disclosure, and fig. 10 illustrates an exploded view of the water diverter 200 shown in fig. 9. The diverter 200 includes the motor 100, the diverter drive shaft 7, and the diverter housing 8 as previously described. The water diversion driving shaft 7 is connected with the motor 100 in a transmission way. The water knockout vessel housing 8 accommodates the water knockout drive shaft 7 and is fixedly connected to the motor 100, the wire connection portion 3 of the motor 100 is isolated from the water knockout vessel housing 8 by the isolation member 6 and the terminal connection device 5, and the water knockout vessel housing 8 is made of a non-flame retardant material. In other words, the wire connecting portion 3 of the motor 100 is isolated from the water knockout housing 8 in such a manner that the isolation member 6 and the terminal connecting means 5 are provided therebetween.

The water separator case 8 includes an upper end cover 81 and a lower end cover 82, the upper end cover 81 and the lower end cover 82 surround to accommodate the water separation drive shaft 7, and the motor 100 is fixed on the lower end cover 82 and is in snap-fit connection with the lower end cover 82.

The water separator 200 further includes a water storage element 9, and the water storage element 9 is fixedly mounted on a side of the lower end cover 82 facing the motor 100 and is in fluid communication with the lower end cover 82.

Figure 11A shows a top view of the diverter 200 shown in figure 9 and figure 11B shows a cross-sectional view along line a-a of figure 11A. In this embodiment, the lower end cover 82 and the motor 100 are preferably fixed by the engaging structure 83 of the lower end cover 82.

The snap-fit structure 83 includes a resilient portion 831, a support portion 832, and barbs 833. As previously mentioned, the electric machine 100 is provided with two lugs 14 at corresponding engagement positions. When the motor 100 is mounted, the elastic portion 831 expands toward both sides so that the lug 14 can smoothly slide into the mounting position over the barb 833. When the motor 100 is mounted in place, the elastic portions 831 rebound and cling to both sides of the lugs 14 so that the motor 100 does not wobble. The support portions 832 and the barbs 833 can limit the translational movement of the housing 1 of the electric machine 100 in the axial direction. The elastic portion 831 may restrict a rotational movement of the housing 1 of the motor 100 in a circumferential direction.

Compared with the traditional structure that the two parts are fixed by using the screw, the structure provided by the embodiment does not need the processes of using the screw and screwing the screw, one part and one process are reduced, and the cost is reduced.

Fig. 12 illustrates an exploded view of the lower cap 82 and the water storage element 9 according to an exemplary embodiment of the present disclosure, fig. 13A illustrates a side view of the lower cap 82 and the water storage element 9 according to an exemplary embodiment of the present disclosure, fig. 13B illustrates a sectional view taken along line B-B of fig. 13A, and fig. 13C illustrates a sectional view of the water storage element 9 according to an exemplary embodiment of the present disclosure.

As shown in fig. 12, 13A and 13B, the lower end cap 82 includes a hook 85 and a stopper 84, and the hook 85 and the stopper 84 extend downward from the bottom of the water storage element 9. The water storage element 9 includes a locking groove 93 for engaging the hook 85. As can be seen from the cross-sectional view shown in fig. 13B, the side wall of the hook 85 abuts against the inner wall of the engaging groove 93 to apply forces in two different non-parallel directions, so that the water storage element 9 is tightly engaged with the lower end cap 82. The stopper 84 of the lower end cap 82 is tightly attached to the inner wall of the water storage element 9, and applies a reverse force to the water storage element 9 opposite to the resultant force of the acting forces of the two hooks 85, so as to ensure the radial force balance of the water storage element 9, limit the installation position of the water storage element 9, and maintain the stability of the water storage element 9 installed on the lower end cap 82.

In a typical water separator structure, a water storage tank is usually integrated on a rear cover, the water storage element 9 provided by the embodiment is an independent structure, the whole water storage element 9 is small in size and simple to mount, and the water storage element 9 and the wiring part 3 of the motor 100 are separately arranged, so that the use safety is ensured. Meanwhile, the water storage element 9 can be made of non-flame-retardant materials, and the manufacturing cost is low.

As shown in fig. 13C, the bottom of the water storage element 9 further includes a water outlet hole 91 and a water blocking member 92, the bottom of the water storage element 9 is disposed to be inclined toward the water outlet hole 91 so that excess water in the water storage element 9 can be discharged from the water outlet hole 91 along the bottom of the water storage element 9, and the water blocking member 92 is disposed near the water outlet hole 91 and extends from the bottom of the water storage element 9. The bottom of water blocking member 92 is less than the bottom of apopore 91 for water that water blocking member 92 can prevent apopore 91 from flowing splashes to all around.

Fig. 14A illustrates a perspective view of the water diversion drive shaft 7 according to an exemplary embodiment of the present disclosure, and fig. 14B illustrates a perspective view of the water diversion drive shaft 7, the photoelectric switch 10, and the PCB board 30 according to an exemplary embodiment of the present disclosure.

As shown in fig. 14A, the water dividing drive shaft 7 includes a rotating shaft 71, a baffle 72, a water passing port 73, and a water blocking rib 74. The baffles 72 are arranged at intervals in the circumferential direction of the water dividing drive shaft 7, and the widths of the plurality of baffles 72 are different. The water passing port 73 is provided in the circumferential direction of the bottom of the rotating shaft 71 for passing the leakage water. The water retaining ribs 74 extend axially to form an isolation structure to prevent water leakage from entering the baffle 72.

When water leakage occurs in the water path, the water passes through the water passing hole 73 at the bottom of the rotating shaft 71, passes through the lower end cover 82 and enters the water storage element 9, and then flows out of the water outlet hole 91 of the water storage element 9.

As shown in fig. 14B, the lower end cover 82 may further be provided with the photoelectric switch 10 and the PCB 30, and the photoelectric switch 10 is electrically connected to the PCB 30, and the PCB 30 receives and processes signals sent by the photoelectric switch 10. The motor 100 is electrified to drive the rotating shaft 71 to rotate, when the rotating shaft 71 rotates, the baffles 72 respectively pass through the sensing areas of the photoelectric switch 10, and the photoelectric switch 10 outputs high and low electric frequency signals. Because the widths or gaps of the baffles 72 are different, the high-low frequency signal feedback of the photoelectric switch 10 can generate wavelength differences, and the angular position of the rotating shaft 71 can be fed back according to the wavelength differences, so that the opening and closing of the motor 100 are controlled, and the rotating shaft 71 can timely change the water flow direction of the water distributing valve in the dish washing machine.

Fig. 15 illustrates a schematic connection relationship diagram of a dishwasher according to an exemplary embodiment of the present disclosure. As shown in fig. 15, at least one embodiment of the present disclosure also provides a dishwasher 300, including: a shunt valve 400 provided with a switching member 40 and a plurality of water flow passages 50; and the diverter 200 as previously described, the diverter drive shaft 7 of the diverter 200 is connected to the diverter valve 400 to drive the switching element 40 to switch the direction of water flow between the plurality of water flow channels 50.

The above description is only a specific implementation manner of the present invention, but the scope of the embodiments of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the embodiments of the present invention or under the idea of the present invention disclosed in the embodiments of the present invention, and all the changes or substitutions should be covered within the scope of the embodiments of the present invention.

Claims (13)

1. An electric machine, comprising:

a housing (1) that houses the coil assembly (2);

a wire connection portion (3) electrically connected with the coil block (2) and configured to be electrically connected with an external connector (4);

a terminal connection device (5) connected to the housing (1) and configured to receive the wire connection portion (3) and the external connector (4) and to electrically connect the wire connection portion (3) with the external connector (4); and

a spacer member (6) fixed to the terminal connection device (5) and surrounding the live portion of the wire connection portion (3) together with the terminal connection device (5),

wherein the terminal connecting device (5) and the spacer member (6) are both made of a flame retardant material.

2. The machine according to claim 1, characterized in that the terminal connection means (5) comprise:

a body (51) comprising three body sidewalls (513, 514, 515) arranged substantially in a U-shape, the three body sidewalls (513, 514, 515) defining a cavity (511); and

a socket (53) integrally formed with the body (51), the socket (53) configured to receive an external connector (4).

3. The machine according to claim 2, characterized in that the wire portion (3) comprises:

the contact pin (31), the contact pin (31) is electrically connected with the coil component (2) of the motor;

a support member (32), the support member (32) supporting and accommodating the pin (31) and fixedly holding the pin (31) on the coil assembly (2); and

one or more terminals (52) made of electrically conductive material, each terminal (52) comprising a first terminal portion (521) and a second terminal portion (522), the first terminal portion (521) being electrically connected with the pin (31), the second terminal portion (522) being configured to be electrically connected with the external connector (4), the terminal (52) being mounted in the cavity (511) of the body (51),

wherein the live parts of the wire connecting portion (3) are the pin (31) and the one or more terminals (52).

4. The electric machine of claim 3,

the first terminal portion (521) includes a first body (5211) and a resilient contact (5212), the first body (5211) defining a first insertion direction (A) for inserting the pin (31), the resilient contact (5212) extending from the first body (5211), and the resilient contact (5212) being configured to be resiliently deformed as the pin (31) is inserted to exert a contact force on the pin (31),

the second terminal portion (522) comprises a second body (5221), the second body (5221) defining a second insertion direction (B) into the external connector (4), wherein

Each terminal (52) further comprises a bent portion (523), the first terminal portion (521) and the second terminal portion (522) being connected by the bent portion (523) such that the first insertion direction (a) is substantially perpendicular to the second insertion direction (B).

5. An electric machine according to claim 2, characterized in that a positioning slot (512) is provided in the body (51), the spacer member (6) being a shield (61), the shield (61) being substantially U-shaped and comprising a first side wall (611) and a second side wall (612) opposite the first side wall (611), the first side wall (611) being inserted in the positioning slot (512).

6. The machine according to claim 2, characterized in that the spacer member (6) is a cover plate (11), fixedly mounted on the housing (1) and configured to close an opening (12) of the housing (1).

7. The machine according to claim 2, characterized in that the housing (1) comprises a recess (13) in the side wall of the housing (1), the recess (13) communicating with the opening (12) of the housing (1), the terminal connection device (5) being fixedly mounted radially outside the housing (1) and covering the recess (13).

8. An electric machine according to claim 3, characterized in that two opposite body side walls (513, 515) of the three body side walls (513, 514, 515) comprise a catch (516) extending from an edge thereof, the catch (516) being configured to snap-connect with the support part (32).

9. A water separator, comprising:

the electric machine of any one of claims 1-8;

the water diversion driving shaft (7) is used for switching the water flow direction of the dishwasher, and the water diversion driving shaft (7) is in transmission connection with the motor; and

water knockout drum casing (8), water knockout drum casing (8) hold divide water drive shaft (7), water knockout drum casing (8) with motor fixed connection, the motor wiring part (3) pass through isolation component (6) with terminal connecting device (5), with water knockout drum casing (8) keep apart, water knockout drum casing (8) are made by non-flame retardant material.

10. The water separator according to claim 9, characterized in that the separator housing (8) comprises an upper end cover (81) and a lower end cover (82), the upper end cover (81) and the lower end cover (82) enclosing to accommodate the water separation drive shaft (7), and the motor is fixed on the lower end cover (82) and is snap-connected with the lower end cover (82).

11. The water separator of claim 10, further comprising: the water storage element (9) is fixedly arranged on one side, facing the motor, of the lower end cover (82), and is communicated with the lower end cover (82) in a fluid mode.

12. The water separator according to claim 11, wherein the bottom of the water storage element (9) comprises a water outlet hole (91) and a water stop (92), the bottom of the water storage element (9) is arranged to be inclined towards the water outlet hole (91) so that excess water in the water storage element (9) is discharged from the water outlet hole (91) along the bottom of the water storage element (9), and the water stop (92) is arranged in the vicinity of the water outlet hole (91) and extends from the bottom of the water storage element (9).

13. A dishwasher, comprising:

a shunt valve (400) provided with a switching element (40) and a plurality of water flow passages (50); and

the diverter according to any one of claims 9-12, the diverter drive shaft (7) of the diverter being connected to the diverter valve (400) to drive the switching element (40) to switch the direction of the water flow between the plurality of water flow channels (50).

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