CN217769692U - Motor and electrical equipment - Google Patents

Abstract

The utility model discloses a motor and electrical equipment, which belongs to the technical field of motors, wherein the motor comprises a stator component, a first end cover, a second end cover and a conductive piece, the stator component comprises a plastic package shell, the first end cover is covered at the opening of the plastic package shell through a mounting groove, and the second end cover is arranged at one end of the plastic package shell, which is far away from the first end cover; the one end of electrically conductive piece sets firmly and is located open-ended first terminal surface in the plastic envelope casing, and be connected with first end cap electricity, the other end is connected with the second end cap electricity, and set up the sealing member between the bottom surface and the first terminal surface of mounting groove, and the area of the second terminal surface of sealing member is less than or equal to 90% of the groove basal area of mounting groove, be favorable to reducing the influence of the compressive force that the sealing member pressurized deformation produced to the assembly cohesion of first end cap and plastic envelope casing, improve the leakproofness between first end cap and the stator module, thereby make electrically conductive piece obtain effective seal at the hookup location of first end cap, promote motor operational reliability.

Description

Motor and electrical equipment

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to a motor and electrical equipment are related to.

Background

In the related art, the brushless motor supports the bearing by using the end covers, and the end covers at two ends are electrically connected through the conductive piece, so that the condition that the electric corrosion of the bearing occurs is reduced, however, the connection position of the end covers of the motor is easy to enter water under severe working conditions such as rain, and the performance of the motor is reduced, and even the motor cannot normally work.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a motor effectively improves the leakproofness of motor at the end cover hookup location, reduces the phenomenon that the motor appears intaking, promotes motor operational reliability.

The utility model discloses still provide the electrical equipment including above-mentioned motor.

According to the utility model discloses a motor of first aspect embodiment, include:

the stator assembly comprises a plastic package shell, and one end of the plastic package shell along the axial direction of the stator assembly is opened to form an opening;

the first end cover is provided with an installation groove matched with one end, located at the opening, of the plastic package shell;

the second end cover is arranged at one end of the plastic package shell, which is far away from the first end cover;

one end of the conductive piece is fixedly arranged on the first end face of the plastic package shell, positioned at the opening, and electrically connected with the first end cover, and the other end of the conductive piece is electrically connected with the second end cover;

the sealing member is arranged between the first end surface and the groove bottom of the mounting groove, the sealing member is arranged on the second end surface of the end surface abutted against the groove bottom of the mounting groove, and the area of the second end surface is smaller than or equal to 90% of the area of the groove bottom of the mounting groove.

According to the utility model discloses motor has following beneficial effect at least:

the stator assembly of the motor forms a plastic package shell through injection molding, the components such as the rotor assembly of the motor and the like can be installed in the stator assembly through an opening, the first end cover covers the opening of the plastic package shell through the installation groove, and the first end cover and the second end cover at the two ends of the stator assembly are connected through the conductive piece, so that the first end cover is electrically connected with the second end cover, and the influence of electric corrosion of the bearing is effectively reduced; the one end that electrically conductive piece and first end cap are connected is fixed and is located open-ended first terminal surface at the plastic envelope casing, need not to stretch into stator module inner space with electrically conductive piece, and set up the sealing member between the tank bottom of first terminal surface and mounting groove, the second terminal surface of sealing member and the tank bottom butt of mounting groove, and the area of second terminal surface is less than or equal to 90% of the groove bottom area of mounting groove, be favorable to reducing the influence of the compressive force that the sealing member pressurized deformation produced to the assembly cohesion of first end cap and plastic envelope casing, improve the leakproofness between first end cap and the stator module, thereby make electrically conductive piece obtain effective seal at the hookup location of first end cap, effectively solve the problem that the motor intake easily under harsh operating mode, promote motor operational reliability.

According to some embodiments of the invention, the thickness of the sealing member is greater than or equal to 0.6mm.

According to the utility model discloses a some embodiments, the plastic envelope casing is located the opening part is equipped with the annular flange, the mounting groove with flange interference fit, first terminal surface form in the flange is followed the axial surface of stator module.

According to some embodiments of the present invention, the sealing member is made of silica gel or rubber.

According to some embodiments of the invention, the hardness of the seal is greater than or equal to 30HA and less than or equal to 50HA.

According to some embodiments of the invention, the sealing member is a glue material provided between the bottom of the mounting groove and the first end surface.

According to some embodiments of the utility model, electrically conductive piece is equipped with bellied shell fragment, the shell fragment is located the outside of plastic envelope casing and with the lateral wall butt of mounting groove.

According to the utility model discloses a some embodiments, first terminal surface is equipped with the draw-in groove, the draw-in groove with the inside wall interval of plastic envelope casing sets up, the one end lock joint of electrically conductive piece in the draw-in groove.

According to some embodiments of the utility model, electrically conductive piece includes first section of bending and the second section of bending, first section of bending certainly the lateral wall of plastic envelope casing extends to the draw-in groove, the second section of bending is located in the draw-in groove and with draw-in groove interference fit.

According to the utility model discloses a some embodiments, the draw-in groove with distance between the inside wall of plastic envelope casing is more than or equal to 1mm.

According to some embodiments of the utility model, the lateral wall of plastic envelope casing is equipped with certainly first terminal surface is followed stator module axial extension crosses the wire casing, cross the inslot and be equipped with the solidus clamp that is used for fixed electric wire.

According to some embodiments of the utility model, the solidus clamp is silica gel or rubber material.

According to the utility model discloses an electrical equipment of second aspect embodiment, including the motor of above-mentioned first aspect embodiment.

According to the utility model discloses electrical equipment has following beneficial effect at least:

the motor of above-mentioned embodiment is applied to electrical equipment, the first end cover of motor covers the opening part at plastic envelope casing through the mounting groove, first end cover and the second end cover at stator module both ends are connected through electrically conductive piece, make first end cover and second end cover electricity be connected, electrically conductive piece need not to stretch into stator module inner space after the assembly, and set up the sealing member between the tank bottom of first end face and mounting groove, the second terminal surface of sealing member and the tank bottom butt of mounting groove, and the area of second terminal surface is less than or equal to 90% of the groove basal area of mounting groove, be favorable to reducing the influence of the compressive force that the sealing member compressed deformation produced to the assembly cohesion of first end cover and plastic envelope casing, improve the leakproofness between first end cover and the stator module, thereby make electrically conductive piece obtain effective seal at the hookup location of first end cover, effectively solve the easy problem of intaking of motor under the harsh operating mode, the motor operation is more stable, be favorable to promoting electrical equipment operational reliability.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded schematic view of a motor according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a motor according to an embodiment of the present invention;

fig. 3 is an enlarged schematic view of the present invention at a in fig. 1;

fig. 4 is an enlarged schematic structural view of the present invention at B in fig. 1;

fig. 5 is an enlarged schematic structural view of the present invention at C in fig. 2;

fig. 6 is a schematic front view of the sealing member of the present invention;

fig. 7 is a schematic front structural view of the first end cap of the present invention.

Reference numerals:

a stator assembly 100; a plastic package housing 110; a second groove 111; an opening 120; a flange 130; a first end face 131; a card slot 132; a first groove 133; a wire passage groove 140;

the first end cap 200; a mounting groove 210;

a second end cap 300;

a seal 400; a second end face 410;

a conductive member 500; a first bend section 510; a second bending section 520; a spring plate 530;

a rotor assembly 600;

a wire harness 700; a wire fixing clip 710;

an electric machine 1000.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, it should be noted that the words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in combination with the specific content of the technical solution of the present invention.

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the embodiments described below are some, not all embodiments of the present invention.

A motor 1000 according to an embodiment of the present invention is described with reference to fig. 1 to 7, where the motor 1000 is a brushless motor, and is applied to a household appliance such as an air conditioner, and the motor 1000 is described below with a specific example.

Referring to fig. 1, the embodiment of the present invention provides a motor 1000, including stator module 100 and bearing support assembly, stator module 100 forms plastic package casing 110 through moulding plastics, and the inside of plastic package casing 110 is formed with installation space, and installation space is used for holding rotor module 600, and plastic package casing 110 opens along stator module 100's axial one end and forms opening 120, opening 120 and installation space intercommunication. During assembly, the stator assembly 100 is first injection-molded to form the plastic package housing 110, and then the rotor assembly 600 and other components are assembled into the installation space through the opening 120. The bearing support assembly includes a first end cap 200 and a second end cap 300, the first end cap 200 is assembled at one end of the stator assembly 100 located at the opening 120, the opening 120 is covered by the first end cap 200, and the second end cap 300 is disposed at the other end of the plastic package housing 110 far away from the first end cap 200. The first end cap 200 and the second end cap 300 are respectively provided with a bearing, the rotor assembly 600 includes a rotating shaft, and the rotating shaft is supported by the bearings at both ends, so that the rotor assembly 600 can rotate in the stator assembly 100, and the structure of the rotating shaft and the bearing is not shown in the drawings.

Fig. 1 is an exploded schematic structural diagram of a motor 1000 according to an embodiment, and it can be understood that the first end cap 200 is matched with the opening 120 of the plastic package housing 110, so that the first end cap 200 can cover the opening 120, and the second end cap 300 and the plastic package housing 110 are formed into an integral structure by injection molding, so that the first end cap 200 and the second end cap 300 are respectively located at two ends of the plastic package housing 110 along an axial direction. In the embodiment, the first end cap 200 and the second end cap 300 are both metal members, and the conductive member 500 is used to connect the first end cap 200 and the second end cap 300, so that the first end cap 200 and the second end cap 300 are electrically connected, and the conductive member 500 is disposed on an outer sidewall of the plastic package housing 110.

It should be noted that the bearing is a key component of the motor 1000, and the performance of the bearing has an important influence on the service life of the motor 1000. In the embodiment, the first end cap 200 is connected to the second end cap 300 through the conductive member 500, so that the equivalent capacitance of the motor 1000 can be reduced, the shaft voltage can be reduced, the purpose of reducing the electric corrosion can be achieved, the service life of the bearing can be prolonged, and the motor 1000 can operate stably and reliably.

It is understood that, as shown in fig. 1, the second end cap 300 and the plastic package housing 110 are an integral structure, one end of the conductive element 500 may be fixedly connected to the second end cap 300, and the conductive element 500 may be electrically connected to the second end cap 300 in various manners, such as riveting, crimping, and the like, without limitation.

In the related art, at the position of the opening 120 of the plastic package housing 110, the conductive member 500 may pass through the plastic package housing 110 to be connected to the end cap, or the conductive member 500 may be snapped on the plastic package housing 110 and connected to the end cap, so that the conductive member 500 is electrically connected to the end cap, however, in the above structure, the conductive member 500 needs to enter an installation space in the stator assembly 100, so that gaps are formed between the conductive member 500 and the end cap and between the conductive member 500 and the plastic package housing 110, thereby reducing the sealing performance of the entire stator assembly 100. It can be understood that as the application scenarios of products such as household appliances carrying the motor 1000 become wider and wider, the diversity of the application environment of the motor 1000 also increases, and the reliability of the motor 1000 in operation in a harsh environment should be paid more attention to in the design process of the motor 1000, and particularly, the problem of water inflow at the connection position of the conductive member 500 and the end cover is likely to occur under the working conditions such as rain, which causes the performance of the motor 1000 to be reduced or even the motor 1000 cannot work normally. In view of the above problem, the embodiment of the utility model provides a to the mounting structure who leads electrical piece 500 at opening 120 position optimize, effectively improve the leakproofness of motor 1000 at the electrically conductive 500 hookup location of leading, reduce the phenomenon that motor 1000 appears intaking, promote motor 1000 operational reliability.

Specifically, referring to fig. 2, fig. 2 is a schematic cross-sectional view of a motor 1000 according to an embodiment, in which the first end cap 200 is connected to the plastic package housing 110 in an interference fit manner, an edge of the first end cap 200 is press-fit onto a first end surface 131 of the plastic package housing 110 at the opening 120, and an end of the conductive member 500 is connected to the first end surface 131, so that an upper end of the conductive member 500 is fixed and electrically connected to the first end cap 200.

It can be understood that, as shown in fig. 1, the conductive element 500 is made of a conductive metal material and is a long strip-shaped plate, the conductive element 500 is disposed on the outer sidewall of the plastic package housing 110, the upper end of the conductive element 500 extends to the position of the first end surface 131 along the outer sidewall of the plastic package housing 110, the end of the conductive element 500 is fixed on the first end surface 131 and cannot enter the plastic package housing 110, and the conductive element 500 is prevented from penetrating through the sidewall of the plastic package housing 110 to affect the sealing performance between the first end cap 200 and the plastic package housing 110. It should be noted that the lower end of the conductive member 500 extends along the outer sidewall of the plastic package housing 110 and is connected to the second end cap 300, the lower end of the conductive member 500 does not enter the plastic package housing 110, and the second end cap 300 and the plastic package housing 110 are integrally injection-molded, so that the structure is stable and reliable, and the sealing performance is high.

It is understood that, in some embodiments, the end portion of the upper end of the conductive element 500 may extend to the middle of the first end surface 131, the end portion of the upper end of the conductive element 500 may be pressed against the first end surface 131 by the first end cap 200, or the conductive element 500 may be fixedly connected to the first end surface 131 by glue or the like. Referring to fig. 2 and 4, without extending the conductive member 500 into the inner space of the stator assembly 100, in the radial direction of the stator assembly 100, the conductive member 500 covers a part of the first end surface 131, and the first end surface 131 between the conductive member 500 and the inner side wall of the plastic package housing 110 is not covered by the conductive member 500, that is, a part of the first end surface 131 remains at the connection position of the conductive member 500 as a sealing surface, so that the influence of the conductive member 500 on the sealing performance between the first end cover 200 and the first end surface 131 is reduced, and compared with a fixing structure in which the conductive member 500 enters the inner space of the stator assembly 100, the risk of water inflow is reduced, and the sealing performance is higher.

With continued reference to fig. 2 and 5, in the embodiment, a sealing structure is disposed between the first end cap 200 and the first end surface 131, and the sealing structure may be a sealing ring, a sealant, or the like, so as to form a seal between the first end cap 200 and the first end surface 131, it can be understood that, since the conductive member 500 does not radially cross over the first end surface 131, that is, the integrity of the first end surface 131 along the circumferential direction of the stator assembly 100 is maintained, the first end cap 200 and the plastic package housing 110 are effectively sealed along the circumferential direction, and have a high sealing performance, thereby effectively solving the problem that water is easily introduced into the connection position of the conductive member 500 when the motor 1000 is in a harsh operating condition, and improving the operation reliability of the motor 1000.

Specifically, in the embodiment shown in fig. 2 and 5, the sealing structure includes a sealing member 400, where the sealing member 400 may be a silicon rubber or rubber seal ring, the sealing member 400 is assembled between the first end cap 200 and the first end surface 131 of the plastic package housing 110, and is pressed by the first end cap 200 and the plastic package housing 110, so that a seal is formed between an upper surface of the sealing member 400 and the first end cap 200, and a seal is formed between a lower surface of the sealing member 400 and the first end surface 131 of the plastic package housing 110.

Referring to fig. 2 and 5, considering that the first end cap 200 and the plastic package housing 110 have a dimensional tolerance during the manufacturing process and an assembly tolerance during the assembly process, if the sealing member 400 is too thin, due to the influence of the size and the assembly tolerance, the upper and lower surfaces of the sealing member 400 cannot be tightly attached to the first end cap 200 and the plastic package housing 110, so that the sealing effect cannot be achieved. Therefore, in the embodiment of the present invention, the thickness t of the sealing member 400 satisfies: t is more than or equal to 0.6mm (millimeter), that is, the thickness of the sealing element 400 needs to be more than or equal to 0.6mm, for example, the thickness of the sealing element 400 can be set to 0.6mm, 0.8mm, 1mm, and the like, and can be specifically set according to the assembly requirement; it can be understood that, by setting the thickness of the sealing member 400 to satisfy the above conditions, the influence of the size and the assembly tolerance of the first end cap 200 and the plastic package housing 110 can be effectively reduced, so that the upper and lower surfaces of the sealing member 400 can be tightly attached to the first end cap 200 and the plastic package housing 110, and the sealing performance between the first end cap 200 and the stator assembly 100 is improved, thereby effectively sealing the connection position of the conductive member 500 at the first end cap 200, and providing a better sealing effect.

Referring to fig. 1 and 3, in some embodiments, a slot 132 is disposed on the first end surface 131, the slot 132 extends from the first end surface 131 along an axial direction of the stator assembly 100, the slot 132 is spaced apart from an inner sidewall of the plastic package housing 110, and an upper end of the conductive member 500 is fastened in the slot 132, so that the conductive member 500 is connected to the first end surface 131 and can be fixed without extending into the stator assembly 100. As shown in fig. 5, it can be understood that, when the conductive elements 500 are assembled in place, the conductive elements 500 are bent and fastened to the side walls of the card slot 132, and the first end cap 200 presses the sealing element 400, so that the sealing element 400 can press the upper end of the conductive element 500, and the upper end of the conductive element 500 is fastened in the card slot 132, thereby the structure is stable and reliable, the conductive element 500 is effectively prevented from being separated from the card slot 132, and the sealing element 400 and the conductive element 500 are effectively sealed, so as to reduce the risk of water entering between the sealing element 400 and the conductive element 500.

It should be noted that, as shown in fig. 5, in the embodiment, along the radial direction of the stator assembly 100, the distance between the slot 132 and the inner side wall of the plastic package housing 110 is h, which satisfies: h is larger than or equal to 1mm, that is, the width of the first end face 131 at the connection position of the conductive piece 500 along the radial direction is larger than or equal to 1mm, so that a large enough sealing area is ensured, the lower surface of the sealing piece 400 is tightly attached to the first end face 131 to form a seal, and thus the sealing piece 400 can form an effective seal between the first end cover 200 and the plastic package shell 110 along the circumferential direction of the stator assembly 100, and the sealing requirement under a severe working condition is met.

Referring to fig. 4, it can be understood that the conductive member 500 includes a first bending section 510 and a second bending section 520, the first bending section 510 extends from an outer sidewall of the plastic package housing 110 to the first bending section 510 of the clamping groove 132, and the first bending section 510 radially covers a portion of the first end surface 131, in consideration of a certain thickness of the conductive member 500, a groove corresponding to the first bending section 510 is disposed on the first end surface 131, and the first bending section 510 extends into the clamping groove 132 along the groove, so that the first bending section 510 does not protrude from the first end surface 131 after being assembled in place, and thus when the sealing member 400 abuts against the first end surface 131, the influence of the first bending section 510 on the sealing member 400 is reduced, which is beneficial for maintaining the stability of the seal between the sealing member 400 and the first end surface 131.

Referring to fig. 3, in some embodiments, the outer sidewall of the plastic package housing 110 is in transition connection with the slot 132 through the first groove 133, in the axial direction of the stator assembly 100, the bottom surface of the first groove 133 is lower than the first end surface 131, and chamfering is performed at a transition position between the first groove 133 and the plastic package housing 110 and a transition position between the first groove 133 and the inner wall of the slot 132, so as to improve the assembly stability of the conductive device 500. It should be noted that the outer sidewall of the plastic package housing 110 is provided with a second groove 111 for accommodating the conductive element 500, the second groove 111 extends along the axial direction of the stator assembly 100, the conductive element 500 is assembled in the second groove 111, and two ends of the conductive element 500 are respectively connected to the first end cap 200 and the second end cap 300, so that the stability of the assembly structure of the conductive element 500 can be improved.

Referring to fig. 4 and 5, the end of the first bending section 510 extends and bends to form a second bending section 520, the second bending section 520 is located in the clamping groove 132 and is in interference fit with the clamping groove 132, specifically, the first bending section 510 is U-shaped and is located in the first groove 133, the second bending section 520 is U-shaped, and two ends of the second bending section 520 respectively abut against two side walls of the clamping groove 132, so that the second bending section 520 and the clamping groove 132 achieve the purpose of interference fit, and the conductive element 500 is fixed without being matched with additional connecting elements, glue adhesion and other manners, thereby further improving the stability of the installation structure of the conductive element 500, and being simple and rapid to assemble.

Referring to fig. 1 and 2, in some embodiments, an annular flange 130 is disposed at the opening 120 of the plastic package housing 110, the first end face 131 is disposed on an axial surface of the flange 130, an edge of the first end cap 200 is bent along a circumferential direction to form an annular mounting groove 210, and the flange 130 is in interference fit with the mounting groove 210, so that the first end cap 200 is connected with the flange 130 for fastening. It will be appreciated that, as shown in connection with fig. 5, the sealing member 400 is located between the bottom surface of the mounting groove 210 and the first end surface 131. During assembly, the sealing member 400 is pre-installed in the installation groove 210, and then the first cap 200 is closed to the opening 120, so that the flange 130 is correspondingly inserted into the installation groove 210, and the first cap 200 is pressed to control the depth of the flange 130 pressed into the installation groove 210, so that the upper and lower surfaces of the sealing member 400 are pressed, thereby forming a sealing structure, and generating a better sealing effect at the connection position of the conductive member 500. Meanwhile, the first end cap 200 is in interference fit with the flange 130 of the plastic package housing 110, so that the conductive member 500 is further limited, and the stability of the whole structure is improved.

Referring to fig. 4 and 5, the conductive member 500 is provided with a protruding elastic piece 530, and the elastic piece 530 is located at the outer side of the plastic package housing 110 and abuts against the side wall of the mounting groove 210, so that the conductive member 500 is electrically connected to the first end cap 200. It can be understood that one end of the elastic piece 530 is connected to the main body of the conductive member 500, and the other end of the elastic piece 530 extends and protrudes out of the surface of the conductive member 500, so that the elastic piece 530 has certain elasticity, and the elastic piece 530 is integrally formed with the conductive member 500. During assembly, the upper end of the conductive sheet is fastened in the clamping groove 132, then the first end cap 200 is pressed into the flange 130, and when the conductive piece 500 is pressed by the first end cap 200, the elastic sheet 530 is pressed to deform and abut against the side wall of the mounting groove 210, so that stable conductivity between the conductive piece 500 and the first end cap 200 is ensured.

Referring to fig. 5, it can be understood that in the embodiment, the sealing member 400 is made of a silicon rubber or a rubber material, and has certain elasticity, when the sealing member 400 is assembled, the sealing member 400 is deformed by the pressing of the first end cap 200 and the first end surface 131, and in the installation position of the conductive member 500, the sealing member 400 can be pressed toward the conductive member 500, so that the sealing member 400 and the conductive member 500 form a seal.

Referring to fig. 5, 6 and 7, it should be noted that, it is considered that the sealing member 400 may be deformed after being compressed to generate a compressive force, and the compressive force may cause a decrease in the coupling force of the assembly of the first end cap 200 and the plastic housing 110. The embodiment thus ensures stable coupling force by reducing the sectional size of the sealing member 400, and more particularly, the sealing member 400 has an end surface abutting against the groove bottom of the mounting groove 210 as the second end surface 410, which is also the upper surface of the sealing member 400, and the area of the upper surface of the sealing member 400 is set smaller than the groove bottom area of the mounting groove 210. The utility model discloses in the preferred embodiment, the area of the upper surface of sealing member 400 is S1, and the groove basal area of mounting groove 210 is S2, needs to satisfy: s1 is not greater than S2 by 90%, that is, the upper surface area of the sealing member 400 needs to be less than or equal to 90% of the groove bottom area of the mounting groove 210, so that the upper surface size of the sealing member 400 is smaller relative to the groove bottom size of the mounting groove 210, so that the sealing member 400 and the side wall of the mounting groove 210 have a certain space, the deformation amount generated by the compression of the sealing member 400 can be accommodated, the influence of the compression force on the assembling bonding force of the first end cover 200 and the plastic package housing 110 is effectively reduced, and the sealing effect is improved.

In some embodiments, the hardness c of the seal 400 preferably satisfies: 30 HA.ltoreq.c.ltoreq.50 HA, i.e. the hardness of the seal 400 needs to be greater than or equal to 30HA and less than or equal to 50HA. It is understood that the compressive strength of the seal 400 is reflected by the hardness, and the lower the hardness, the more easily the seal 400 deforms, whereas the higher the hardness, the less easily the seal 400 deforms, and both too low and too high hardness affect the sealing performance of the seal 400.

Referring to fig. 5, a sealing element 400 made of a silicone material is taken as an example for description, when the sealing element 400 is compressed, a seal can be formed between the first end cap 200 and the plastic package housing 110, the sealing element 400 adopts different hardness, and the bonding force between the sealing element 400 and the first end cap 200 also changes, in the embodiment, the shore hardness value is taken as a reference value, and the preferred hardness is in a range of 30HA to 50HA, for example, the shore hardness value of the sealing element 400 may be 30HA, 35HA, 50HA, and the like, and when the sealing element 400 is within the above hardness range, the bonding force between the sealing element 400 and the first end cap 200 may reach 1500N to 2000N, and the sealing effect is better. Along with the increase of the hardness value, the bonding force between the sealing member 400 and the first end cap 200 is gradually reduced, and the bonding force is reduced to a level below 1500N when the hardness exceeds 50HA, which affects the sealing performance.

It is understood that in some embodiments, the sealing member 400 may be replaced by an adhesive material having a certain viscosity to adhere the groove bottom of the mounting groove 210 to the first end surface 131 to form a seal, and the adhesive material may be a sealant or other glue having sealing property, which is not limited in particular.

Referring to fig. 1, in some embodiments, a wire passing groove 140 is disposed on a side wall of the plastic package housing 110, the wire passing groove 140 extends from the first end surface 131 in an axial direction of the stator assembly 100, a wire of the stator assembly 100 passes through the plastic package housing 110 from the wire passing groove 140 and enters the interior, a wire fixing clip 710 is disposed in the wire passing groove 140, and the wire is fixed by the wire fixing clip 710, so that a wiring structure of the wire is more stable and reliable.

In consideration of the sealing property between the wire passing groove 140 and the wire fixing clip 710, the wire fixing clip 710 of the embodiment is made of a silicone rubber or a rubber material, so that the wire fixing clip 710 has certain elasticity, a plurality of wires form the wire harness 700, and the wire fixing clip 710 clamps the wire harness 700 in the wire passing groove 140 for fixing. The tight fit between the wire fixing clip 710 and the inner wall of the wire passing groove 140 can form a seal, so that the wire fixing clip 710 can fix the wire harness 700 and also can play a role in sealing.

Taking the wire fixing clip 710 made of a silicone material as an example for illustration, the wire fixing clip 710 and the wire harness 700 can be formed into an integral structure through an injection molding process, specifically, in the injection molding process, the wire harness 700 is firstly placed into an injection mold cavity, the wire fixing clip 710 wraps the wire harness 700 when being formed in the mold cavity, so that the sealing between the wire fixing clip 710 and the wire harness 700 is realized, and adjacent wires are separated, so that each wire and the wire fixing clip 710 have high sealing performance.

It should be noted that, in the embodiment, the height of the wire fixing clip 710 may be greater than the height of the wire passing groove 140, when the wire fixing clip 710 is assembled in the wire passing groove 140, the upper first end surface of the wire fixing clip 710 protrudes out of the first end surface 131 of the flange 130, and the wire fixing clip 710 has elasticity, and when the first end cover 200 is covered, the upper first end surface of the wire fixing clip 710 is squeezed, and the wire fixing clip 710 deforms toward the wire passing groove 140 under the action of pressure, so that the contact surface of the wire fixing clip 710 and the wire passing groove 140 is tightly attached to form effective sealing, thereby improving the sealing property between the wire fixing clip 710 and the stator assembly 100, effectively reducing the risk of water inflow of the motor 1000 at the position of the wire passing groove 140, and improving the operation reliability of the motor 1000.

The embodiment of the utility model also provides an electrical equipment (the attached drawing is not shown), and this electrical equipment can be domestic appliance such as air conditioner, and electrical equipment adopts the motor 1000 of above-mentioned embodiment as drive assembly.

Specifically, the stator assembly 100 of the motor 1000 forms the plastic package housing 110 through injection molding, and the first end cap 200 and the second end cap 300 at the two ends of the stator assembly 100 are connected by using the conductive member 500, so that the equivalent capacitance of the motor 1000 can be reduced, the shaft voltage can be reduced, the purpose of reducing the electric corrosion can be achieved, and the service life of the bearing can be prolonged; the one end that electrically conductive piece 500 is connected with first end cover 200 is fixed at the first terminal surface 131 that plastic envelope casing 110 is located opening 120, need not to stretch into stator module 100 inner space with electrically conductive piece 500, and set up seal structure between first end cover 200 and first terminal surface 131, improve the leakproofness between first end cover 200 and stator module 100, thereby make electrically conductive piece 500 obtain effective seal at the hookup location of first end cover 200, effectively solve the problem that electrically conductive piece 500 hookup location easily intakes under the harsh operating mode of motor 1000, make the operation of motor 1000 more stable, be favorable to promoting the reliability of electrical equipment operation.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (13)

1. An electric machine, comprising:

the stator assembly comprises a plastic package shell, and one end of the plastic package shell along the axial direction of the stator assembly is opened to form an opening;

the first end cover is provided with an installation groove matched with one end, located at the opening, of the plastic package shell;

the second end cover is arranged at one end of the plastic package shell, which is far away from the first end cover;

one end of the conductive piece is fixedly arranged on the first end face of the plastic package shell, positioned at the opening, and electrically connected with the first end cover, and the other end of the conductive piece is electrically connected with the second end cover;

the sealing member is arranged between the first end surface and the groove bottom of the mounting groove, the end surface of the sealing member abutted against the groove bottom of the mounting groove is a second end surface, and the area of the second end surface is smaller than or equal to 90% of the area of the groove bottom of the mounting groove.

2. The electric machine of claim 1, wherein the seal has a thickness greater than or equal to 0.6mm.

3. The motor of claim 1, wherein the plastic package housing is provided with an annular flange at the opening, the mounting groove is in interference fit with the flange, and the first end surface is formed on the surface of the flange along the axial direction of the stator assembly.

4. A machine as claimed in any one of claims 1 to 3, wherein the seal is of silicone or rubber.

5. A machine as claimed in any of claims 1 to 3, wherein the hardness of the seal is greater than or equal to 30HA and less than or equal to 50HA.

6. An electric machine according to any of claims 1 to 3, wherein the seal is an adhesive material provided between the groove bottom of the mounting groove and the first end face.

7. The motor of claim 1, wherein the conductive member is provided with a raised spring plate, and the spring plate is located outside the plastic package shell and abuts against the side wall of the mounting groove.

8. The motor of claim 1, wherein the first end surface is provided with a clamping groove, the clamping groove is spaced from an inner side wall of the plastic package shell, and one end of the conductive member is fastened to the clamping groove.

9. The motor of claim 8, wherein the conductive member comprises a first bending section and a second bending section, the first bending section extends from an outer sidewall of the plastic package housing to the slot, and the second bending section is located in the slot and is in interference fit with the slot.

10. The motor of claim 8, wherein a distance between the clamping groove and an inner side wall of the plastic package housing is greater than or equal to 1mm.

11. The motor of claim 1, wherein the sidewall of the plastic package housing is provided with a wire passing groove extending axially from the first end surface along the stator assembly, and a wire fixing clip for fixing a wire is provided in the wire passing groove.

12. The electric machine according to claim 11, wherein the wire-fixing clips are of silicone or rubber.

13. Electrical apparatus, characterized in that it comprises an electrical machine according to any one of claims 1 to 12.

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