CN212588161U - Supporting component, driving device and fan - Google Patents

Abstract

The utility model discloses a supporting component, drive arrangement and fan. Wherein, the supporting component includes: a mounting portion having a bearing cavity configured to mount a bearing; the outer side wall of installation department is located to at least one spacing portion, and spacing portion can be connected with the stator cooperation, and spacing portion is configured to the position of restriction stator. The utility model provides a technical scheme can improve the stator and the installation department be connected the steadiness, is favorable to reducing the drive arrangement noise, and then promotes the drive arrangement performance, and then has improved drive arrangement's use reliability, simple structure moreover, the machine-shaping of being convenient for improves subassembly manufacturing stability.

Description

Supporting component, driving device and fan

Technical Field

The utility model relates to a fan technical field particularly, relates to a supporting component, a drive arrangement and a fan of fan.

Background

The stator and rotor magnetic fields interact to drive the rotor to rotate, and the reaction torque of the rotor rotation acts on the stator, so that the stator and the bearing holding part need to be kept relatively static against the reaction torque, which can cause the noise and performance of the motor to be reduced.

The stator circumferential fixing structure of the existing outer rotor fan is generally characterized in that an adhesive is added between a stator and a bearing holding component, a part and an assembly procedure are added in the method, in a high-temperature environment exceeding the adhesive or in a medium mixed into a motor and chemically reacted with the adhesive, the fastening effect of fastening glue can be invalid, and the stator can circumferentially rotate relative to the bearing holding rack.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

To this end, a first aspect of the present invention provides a support assembly.

A second aspect of the present invention is to provide a driving device.

A third aspect of the present invention provides a fan.

In view of this, according to the first aspect of the present invention, a support assembly is provided, including: a mounting portion having a bearing cavity configured to mount a bearing; the outer side wall of installation department is located to at least one spacing portion, and spacing portion can be connected with the stator cooperation, and spacing portion is configured to the position of restriction stator.

In the above technical solution, further, the limiting portion includes: the first limiting portion is arranged on the outer side wall of the mounting portion and extends along the axial direction of the bearing cavity, and the first limiting portion is configured to limit the circumferential position of the stator.

In any of the above technical solutions, further, in a direction perpendicular to the axis of the bearing cavity, the first limiting portion is configured as a groove structure recessed toward a direction from the outer side wall of the mounting portion to the axis of the bearing cavity; the cross section of the groove structure is in any one of circular arc shape, square shape and trapezoid shape.

In any one of the above technical solutions, further, the limiting portion further includes: the second limiting portion is arranged on the outer side wall of the mounting portion and extends along the circumferential direction of the bearing cavity, and the second limiting portion is configured to limit the axial position of the stator.

In any of the above technical solutions, further, the second position-limiting portion is configured as a protruding structure protruding away from the axis of the bearing cavity.

In any one of the above technical solutions, further, a root portion of the second stopper portion is configured as a chamfered surface.

In any of the above technical solutions, further, the support assembly further includes: dodge the portion, locate the lateral wall of installation department, dodge the portion and extend along the axis direction of bearing chamber, dodge the portion and be constructed as the sunken groove structure of axis towards the bearing chamber, at least part dodge the portion and be located the spacing one side of portion towards the bearing chamber of second.

In any one of the above technical solutions, further, the plurality of limiting portions are disposed on the outer side wall of the mounting portion at intervals along the circumferential direction of the bearing cavity.

In any of the above technical solutions, further, the method further includes: a base body connected with the mounting part; a rib portion connected with the base body and disposed around the base body, the rib portion being configured as a circular arc structure recessed toward an axis of the bearing cavity; and the claw part is connected with the rib part and is provided with an opening which deviates from the axial direction of the bearing cavity.

In any of the above solutions, further, the seat body is constructed as a disc structure; the number of the rib parts is at least three, the at least three rib parts are uniformly distributed along the circumferential direction of the seat body, the end parts of the at least three rib parts are sequentially connected, the rib parts can be enclosed with the seat body to form a through hole, and the through hole is configured to separate the claw part from the seat body.

According to a second aspect of the present invention, there is provided a driving apparatus, comprising: the support assembly set forth in the first aspect; the bearing is arranged in the bearing cavity of the mounting part; the stator is sleeved on the mounting part, the inner wall surface of the stator is provided with a positioning part, and the positioning part is connected with the limiting part in a matching way; the rotor is sleeved on the stator.

In the above technical solution, further, the stator includes: a stator core; an insulating part covering the wall surface of the stator core; the positioning portion is provided on an inner wall surface of the stator core or an insulating portion on the inner wall surface of the stator core.

In any one of the above technical solutions, further, the positioning portion includes: the first positioning portion extends along the axial direction of the stator core, the first positioning portion is constructed into a protruding structure protruding towards the axial line of the stator core, and at least part of the first positioning portion can be arranged in the first limiting portion of the supporting component.

In any one of the above technical solutions, further, the positioning portion further includes: the second positioning portion extends along the circumferential direction of the stator core, the second positioning portion is constructed to be a groove structure deviating from the axis of the stator core and sunken, and at least part of the second limiting portion of the supporting assembly can be arranged in the second positioning portion.

According to the utility model discloses a third aspect provides a fan, include: a load; and the driving device is connected with the load and used for driving the load to operate.

The utility model discloses among the technical scheme, the supporting component includes: installation department and at least one spacing portion. The bearing cavity is formed by enclosing the inner side wall of the mounting part, a bearing port is formed in one end of the bearing cavity, a bearing can be mounted in the bearing cavity through the bearing port, and the outer side wall of the mounting part is arranged on the limiting part. The stator is connected with the driving device in a matched mode through the limiting portion, and circumferential rotation and/or axial movement of the stator relative to the installation portion are prevented. On the one hand, the position stability of stator has been improved, be favorable to reducing the drive arrangement noise, promote the drive arrangement performance, and then improved drive arrangement's use reliability, on the other hand, simple structure, the machine-shaping of being convenient for improves subassembly manufacturing stability, on the other hand, through a plurality of spacing portions, make relative effort evenly distributed between installation department and stator, the spacing intensity of reinforcing installation department to the stator improves the stator and the installation department is connected the steadiness, further guarantees that the stator mounted position is accurate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 shows a schematic structural view of a support assembly according to an embodiment of the present invention;

FIG. 2 shows an enlarged view of area A of FIG. 1;

fig. 3 shows a schematic structural diagram of a driving device according to an embodiment of the present invention;

FIG. 4 shows an enlarged view of area B of FIG. 3;

FIG. 5 shows an enlarged view of area C of FIG. 4;

FIG. 6 shows a cross-section in the direction O-O' of the drive unit in FIG. 3;

FIG. 7 shows an enlarged view of region D of FIG. 6;

fig. 8 shows a schematic structural diagram of a stator according to an embodiment of the present invention.

The reference numbers illustrate:

100 supporting components, 110 mounting parts, 120 limiting parts, 122 first limiting parts, 124 second limiting parts, 130 base bodies, 140 rib parts, 150 claw parts, 160 avoiding parts, 170 through holes, 200 driving devices, 210 rotating shafts, 220 bearings, 230 rotors, 240 stators, 242 positioning parts, 2422 first positioning parts, 2424 second positioning parts, 2426 stopping parts, 244 stator iron cores and 246 insulating parts.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

A support assembly of a drive arrangement of a wind turbine, a drive arrangement and a wind turbine according to some embodiments of the present invention are described below with reference to fig. 1 to 8.

Example 1:

as shown in fig. 1 to 4, according to an embodiment of the first aspect of the present invention, a support assembly 100 is provided, including: a mounting portion 110 and a stopper portion 120.

In detail, the inner side wall of the mounting portion 110 encloses to form a bearing cavity, one end of the bearing cavity is provided with a bearing opening, the bearing cavity can be used for mounting the bearing 220 of the driving device 200, and the limiting portion 120 is arranged on the outer side wall of the mounting portion 110. The number of the limiting parts 120 is at least one, the limiting parts 120 can be matched and connected with the stator 240 of the driving device 200, and the limiting parts 120 are configured to limit the circumferential position and/or the axial position of the stator 240.

In this embodiment, a bearing opening is opened at one end of the mounting portion 110, the mounting portion 110 has a bearing cavity communicated with the bearing opening, the bearing cavity is used for accommodating the bearing 220, and the outer side wall is used for mounting the stator 240. The stator 240 is prevented from rotating circumferentially and/or axially relative to the mounting portion 110 by the engaging connection of the position-limiting portion 120 of the mounting portion 110 with the stator 240 of the driving device 200. On the one hand, the position stability of stator 240 has been improved, be favorable to reducing drive arrangement 200 noise, promote drive arrangement 200 performance, and then the use reliability of drive arrangement 200 has been improved, on the other hand, moreover, the steam generator is simple in structure, the machine-shaping of being convenient for, improve subassembly manufacturing stability, on the other hand, through a plurality of spacing portions 120, make relative effort evenly distributed between installation department 110 and stator 240, strengthen installation department 110 to stator 240 circumference and/axial spacing intensity, improve the stator 240 and installation department 110 be connected the steadiness, further guarantee that stator 240 mounted position is accurate.

Further, a plurality of stopper portions 120 may be disposed at intervals along the circumferential direction of the bearing cavity at an outer side wall of the mounting portion 110.

Specifically, the mounting portion 110 is configured as a hollow cylindrical structure.

Example 2:

as shown in fig. 2, 4 and 5, according to an embodiment of the invention, including the features defined in any of the above embodiments, and further: the stopper 120 includes: the first position-limiting portion 122.

In detail, the first stopper portion 122 is disposed at an outer side wall of the mounting portion 110, and the first stopper portion 122 forms a groove structure extending in an axial direction of the bearing cavity, the groove structure being recessed toward a direction from the outer side wall of the mounting portion to the axial direction of the bearing cavity to limit a circumferential position of the stator 240.

In this embodiment, the outer side wall of the mounting portion 110 is formed with a first limiting portion 122 recessed inward in the radial direction of the bearing cavity, and the first limiting portion 122 extends in the axial direction of the bearing cavity and has a lower end surface, which may be a planar structure or a non-planar structure. The lower end surface of the first limiting part 122 is matched with the upper end surface of the first positioning part 2422 protruding from the stator 240, so that the stator 240 is limited to move along the circumferential direction of the bearing cavity relative to the mounting part 110, the position stability of the stator 240 is improved, and the use reliability of the fan is improved. In addition, since the first position-limiting portion 122 is configured as a groove structure, the first positioning portion 2422 of the stator 240 that is engaged with the first position-limiting portion needs to be configured as a protrusion structure, and since the groove structure is eliminated at the inner side of the stator 240, the magnetic density of the yoke portion of the stator core 244 can be ensured to be uniform without being influenced by the structure, the driving device 200 can achieve better performance, and the stress concentration at the position of the stator core 240 is reduced when the stator core is stamped and formed, so that the processing and manufacturing stability is improved.

Specifically, the groove structure has any one of a circular arc shape, a square shape and a trapezoid shape in a direction perpendicular to the axis of the bearing cavity, that is, in a radial direction of the bearing cavity.

For example, the shape of the groove structure is circular arc, and the first position-limiting portion 122 has a lower end surface and a top portion (a boundary position between the first position-limiting portion 122 and the outer side wall of the mounting portion 110). The first positioning part 2422 of the stator 240 engaged with the first position-limiting part 122 has an upper end surface. During the assembly process, the lower end surface of the first stopping portion 122 is engaged with the upper end surface of the first positioning portion 2422, when the first positioning portion 2422 tends to rotate circumferentially relative to the first stopping portion 122, the top of the first stopping portion 122 contacts with the upper end surface of the first positioning portion 2422, so as to prevent the circumferential rotation of the first positioning portion 2422, and thus limit the circumferential movement of the stator 240 relative to the mounting portion 110.

It should be noted that, as shown in fig. 5, during the assembly process, the upper end surface of the first positioning portion 2422 of the stator 240 and the lower end surface of the first positioning portion 122 are matched with each other to have an error-proofing function, that is, a gap exists between the upper end surface of the first positioning portion 2422 and the lower end surface of the first positioning portion 122 during the matching connection, so as to prevent an angle difference between the stator 240 and the mounting portion 110 in the circumferential direction.

For example, the shape of the groove structure is square, and the first position-limiting portion 122 has a side surface and a bottom surface. The first positioning part 2422 of the stator 240 engaged with the first position-limiting part 122 has a side surface and a top surface. The side surface of the first stopper portion 122 abuts against the side surface of the first positioning portion 2422 to limit the circumferential movement of the stator 240 relative to the mounting portion 110. Of course, the top surface of the first positioning portion 2422 and the bottom surface of the first position-limiting portion 122 of the stator 240 also have an error-proofing function, that is, a gap exists between the top surface of the first positioning portion 2422 and the bottom surface of the first position-limiting portion 122 during the matching connection.

Example 3:

as shown in fig. 2 and 7, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the stopper 120 includes: and a second limiting portion 124.

In detail, the second position-limiting portion 124 is disposed on an outer side wall of the mounting portion 110, and the second position-limiting portion 124 forms a protruding structure extending along a circumferential direction of the bearing cavity, and the protruding structure protrudes away from an axis of the bearing cavity to limit an axial position of the stator 240.

In this embodiment, the outer side wall of the mounting portion 110 forms a second limiting portion 124 protruding in the direction from the axis of the bearing cavity to the outer side wall of the mounting portion 110, the second limiting portion 124 extends in the circumferential direction of the bearing cavity, when the stator 240 is assembled, the stator 240 is sleeved outside the mounting portion 110, and the second positioning portion 2424 of the stator 240 passes over the second limiting portion 124 on the outer side wall of the mounting portion 110 and cooperates with the second limiting portion 124 in a stopping manner to limit the movement of the stator 240 relative to the mounting portion 110 in the axial direction of the bearing cavity. Thereby effectively preventing axial float caused by reverse motion of the stator 240 and improving the position stability of the stator 240. And backstop complex machinery is spacing mode moreover, and stator 240 takes place the axial float when not only effectively preventing the fan from receiving the impact, can also effectively prevent the influence of environment such as high temperature, uses the reliability height.

Further, as shown in fig. 1, fig. 2 and fig. 7, an outside wall of the mounting portion 110 on a side away from the bearing opening is formed with an escape portion 160 having a groove structure, the escape portion 160 is recessed toward an axis of the bearing cavity and extends along an axis direction of the bearing cavity, and along a direction from the outside wall of the mounting portion 110 to the axis of the bearing cavity, at least a part of the escape portion 160 is located at a bottom of the second limiting portion 124, that is, at least a part of the escape portion 160 is located on a side of the second limiting portion 124 facing the bearing cavity. In the process of assembling the mounting part 110 with the stator 240, when the second positioning part 2424 of the stator 240 presses the second position-limiting part 124, a portion of the second position-limiting part 124 can be elastically deformed and move in the direction of the bearing cavity, so that the stator 240 can be quickly and smoothly mounted in place. After the stator 240 moves to the assembling position, the second position-limiting portion 124 is deformed to be reset and is matched with the second positioning portion 2424, so that the axial position of the stator 240 is limited. Through setting up dodging portion 160, make to have the deformation space between spacing portion 124 of second and the main part of installation department 110, can effectively reduce the assembly degree of difficulty of installation department 110 and stator 240 to improve assembly efficiency.

Specifically, the root of the second stopper portion 124 is configured as a chamfered surface, that is, the end surface of the second stopper portion 124 on the side away from the bearing opening forms a guide inclined surface. By arranging the chamfer, the stator 240 moves more smoothly in the assembling process, so that the installation part 110 and the stator 240 are more easily and conveniently assembled.

Example 4:

as shown in fig. 1 and 6, according to an embodiment of the present invention, there is provided a support assembly 100, including: the holder body 130, the mounting portion 110, the stopper portion 120, the rib portion 140, and the claw portion 150.

In detail, one end of the mounting portion 110 is connected to the base 130, and the other end of the mounting portion 110 is opened with a bearing opening. The rib portions 140 are connected to the base 130 and arranged around the base 130, the rib portions 140 are extended in an arc shape along the radial outer side of the bearing cavity of the mounting portion 110, the number of the rib portions 140 is at least three, and the plurality of rib portions 140 are uniformly distributed on the base 130 along the circumferential direction of the bearing cavity. The ends of at least three ribs 140 are connected in sequence, and the area enclosed by two interconnected ribs 140 and the base 130 forms a through hole 170. The claw parts 150 can be arranged at two ends of the rib part 140, namely at the connecting position of two adjacent rib parts 140, the claw parts 150 can also be arranged between two end parts of the rib part 140, the claw parts 150 are provided with openings facing away from the bearing cavity, and the openings of the claw parts 150 can fix other components of the fan.

In this embodiment, the rib 140 has an arc-shaped structure, and the base body 130 and the claw portion 150 are connected by the rib 140, so that the relative positional relationship between the claw portion 150 and the mounting portion 110 in the middle of the base body 130 is ensured, and the positional accuracy is ensured. The through-holes 170 partition the claw 150 from the housing 130 in a radial direction of the bearing cavity, thereby interrupting a noise propagation path, so that noise inside the fan cannot be transmitted to a connection part connected to the claw 150, and noise during operation of the fan is reduced. And a plurality of costal portion 140 evenly distributed for the axial force evenly distributed that drives when the fan rotates is at claw 150, and claw 150 atress is even, reduces drive arrangement and sweeps the thorax risk, guarantees drive arrangement steady operation, and then promotes user's use and experiences, reinforcing product practicality.

Example 5:

as shown in fig. 3 to 8, according to an embodiment of a second aspect of the present invention, there is provided a driving device 200, including: the first aspect proposes a support assembly 100, a bearing 220, a stator 240 and a rotor 230 adapted to the stator 240.

In detail, the support assembly 100 mounts the parts 110 and the stoppers 120. The mounting portion 110 has a bearing cavity, the bearing 220 is mounted inside the bearing cavity, and the bearing 220 is used for supporting the rotating shaft 210. The stator 240 is sleeved outside the mounting portion 110. The inner wall surface of the stator 240 has a positioning portion 242, and the positioning portion 242 can be in fit connection with at least one limiting portion 120 on the outer side wall of the mounting portion 110 to limit the circumferential position and/or the axial position of the stator 240. The rotor 230 is enclosed outside the stator 240, and an air gap exists between the stator 240 and the rotor 230.

In this embodiment, the driving apparatus 200 is constructed in the structure of the inner stator 240 of the outer rotor 230, and the bearing 220 and the stator 240 are fixed using the support assembly 100. The positioning portion 242 of the stator 240 is coupled to the limiting portion 120 of the mounting portion 110, so as to prevent the stator 240 from rotating circumferentially and/or axially relative to the mounting portion 110. On the one hand, the position stability of the stator 240 is improved, which is beneficial to reducing the noise of the driving device 200, and the performance of the driving device 200 is improved, thereby improving the use reliability of the driving device 200. On the other hand, the structure is simple, the processing and forming are convenient, and the processing and manufacturing stability of the component is improved.

Specifically, as shown in fig. 4, the stator 240 includes: stator core 244 and insulation 246. The insulating portion 246 covers the wall surface of the stator core 244. The positioning portion 242 is provided in an inner wall surface of the stator core 244 or a portion of the insulating portion 246 on the inner wall surface of the stator core 244. The stator core 244 has a plurality of teeth on a side of the stator core 244 facing the rotor 230, the plurality of teeth are arranged along a circumferential direction of the stator core 244, a slot of the stator 240 is defined between adjacent teeth, and coils are wound on the teeth.

Example 6:

as shown in fig. 2 and 8, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the positioning part 242 includes a first positioning part 2422.

In detail, the first positioning part 2422 extends in the axial direction of the stator core 244, the first positioning part 2422 is configured as a convex structure protruding toward the axial direction of the stator core 244, and at least part of the first positioning part 2422 can be provided in the first stopper part 122 of the support member.

In this embodiment, the inner wall of the stator core 244 is formed with first positioning portions 2422 protruding radially inward along the stator core 244, and the first positioning portions 2422 extend axially along the stator core 244 and have an upper end surface, which may be a planar structure or a non-planar structure. The upper end surface of the first positioning part 2422 is matched with the lower end surface of the first limiting part 122 of the supporting component, so that the circumferential movement of the stator 240 relative to the mounting part 110 along the bearing cavity is limited, the position stability of the stator 240 is improved, and the use reliability of the fan is improved. In addition, compare in the inboard groove structure of stator core 244, first positioning portion 2422 is constructed protruding structure and can guarantee that stator core 244 yoke portion magnetic density is even, does not receive the structural influence for drive arrangement reaches better performance, and the inboard groove structure that cancels of stator core 244 reduces here stress concentration when punching sheet stamping forming, improves manufacturing stability.

Specifically, the shape of the protruding structure is any one of a circular arc shape, a square shape, and a trapezoidal shape in the radial direction of the stator core 244.

For example, the shape of the protrusion is circular arc, the first positioning portion 2422 has an upper end surface, and the first limiting portion 122 engaged with the first positioning portion 2422 has a lower end surface and a top. During the assembly process, the lower end surface of the first stopping portion 122 is engaged with the upper end surface of the first positioning portion 2422, when the first positioning portion 2422 tends to rotate circumferentially relative to the first stopping portion 122, the top of the first stopping portion 122 contacts with the upper end surface of the first positioning portion 2422, so as to prevent the circumferential rotation of the first positioning portion 2422, and thus limit the circumferential movement of the stator 240 relative to the mounting portion 110.

It should be noted that, during the assembly process, the upper end surface of the first positioning part 2422 and the lower end surface of the first limiting part 122 are matched to have an error-proofing function, so that a gap exists between the upper end surface of the first positioning part 2422 and the lower end surface of the first limiting part 122, that is, the height of the protrusion of the first positioning part 2422 is smaller than the depth of the groove of the first limiting part 122, thereby preventing an angle difference between the stator and the mounting part in the circumferential direction.

For example, the shape of the protruding structure is a square, and the first positioning portion 2422 has a side surface and a top surface. The first stopper part 122 engaged with the first positioning part 2422 has a side surface and a bottom surface. The side surface of the first stopper portion 122 abuts against the side surface of the first positioning portion 2422 to limit the circumferential movement of the stator 240 relative to the mounting portion 110. Of course, the top surface of the first positioning portion 2422 and the bottom surface of the first position-limiting portion 122 of the stator 240 also have an error-proofing function, that is, a gap exists between the top surface of the first positioning portion 2422 and the bottom surface of the first position-limiting portion 122 during the matching connection.

Example 7:

as shown in fig. 6 to 8, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the positioning parts 242 include second positioning parts 2424.

In detail, the second positioning part 2424 extends in the circumferential direction of the stator core 244, the second positioning part 2424 is configured as a groove structure recessed away from the axis of the stator core 244, and one end surface of the groove forms the stopper part 2426. At least a portion of the second stopper portion 124 of the mounting portion 110 can be disposed within the second positioning portion 2424.

In this embodiment, the outer side wall of the mounting portion 110 forms a second limiting portion 124 protruding in the direction from the axis of the bearing cavity to the outer side wall of the mounting portion 110, the second positioning portion 2424 extends along the circumferential direction of the stator core 244 to form a groove, when the stator 240 is assembled, the stator 240 is sleeved outside the mounting portion 110 of the support assembly 100, and the second positioning portion 2424 passes over the second limiting portion 124 on the outer side wall of the mounting portion 110 and cooperates with the second limiting portion 124 in a stopping manner to limit the movement of the stator 240 relative to the mounting portion 110 in the axial direction of the bearing cavity. Thereby effectively preventing axial float caused by reverse motion of the stator 240 and improving the position stability of the stator 240. In addition, the groove structure of the second positioning part 2424 can avoid the second limiting part 124 on the outer side wall of the mounting part 110 in the assembling process, so that the probability of interference, clamping stagnation and even clamping death between the stator 240 and the mounting part 110 in the assembling process is reduced, the assembling difficulty is further reduced, and the second positioning part 2424 contributes to light weight of the fan.

Specifically, as shown in fig. 7, the second limiting portion 124 is designed in the form of a blind groove, and one end surface of the blind groove is used as a stopping portion 2426, wherein the stopping portion 2426 can be provided as a chamfered surface. Therefore, the process of separately processing the stopping part 2426 is not needed, the production process is facilitated to be simplified, and the production efficiency is improved. Meanwhile, when the stopping portion 2426 is in stopping fit with the second position-limiting portion 124, at least a portion of the second position-limiting portion 124 is also embedded into the blind groove. Therefore, the blind slot can limit the relative movement between the mounting portion 110 and the stator 240 in the axial direction of the stator 240, and also can limit the relative movement between the mounting portion 110 and the stator 240 in the circumferential direction of the stator 240, so that the structure of the driving device 200 is more stable.

In addition, when the stopping portion 2426 is in stopping fit with the second limiting portion 124, the radial outer edge of the flange of the second limiting portion 124 abuts against the radial outer edge of the second positioning portion 2424, so that the contact area between the mounting portion 110 and the stator 240 is increased, and a relatively large static friction force can be generated after assembly is completed, which is beneficial to preventing the second limiting portion 124 from being separated from the stator 240, so that the fitting stability of the stator 240 and the mounting portion 110 is improved, and the position stability of the stator 240 is further improved.

Example 8:

according to the utility model discloses the embodiment of third aspect provides a fan, include: a load and a drive device as set forth in the second aspect. The driving device is connected with a load. The fan thus has all the advantages of the drive device proposed by the second aspect.

Specifically, the blower fan may be applied to an air conditioner, a refrigerator, a fan, a hood, a cleaner, and the like.

Example 9:

as shown in fig. 1 to 8, according to a specific embodiment of the present invention, an external rotor fan is provided, including: a bearing holding member (support assembly 100) and a stator 240.

In detail, the bearing holding member includes a cylindrical holding portion (mounting portion 110), a disk portion (base body 130), a rib portion 140, and a claw portion 150.

As shown in fig. 1 and 6, the disk portion is disposed at one axial end of the holding portion. The rib 140 is extended in an arc shape along the radial outer side of the disk portion, and connects the claw portion 150 and the disk portion, the claw portion 150 is disposed on the radial outer side of the rib 140, the radial outer side is in an open structure, and the claw portion 150 supports the entire fan. Thereby connecting the fan support site with the fan function site via the rib 140. The ribs 140 have an arc-shaped structure, and three or more ribs are uniformly distributed in the circumferential direction. The rib portion 140 directly connects the disk portion and the claw portion 150 as shown, and this structure more easily ensures the relative positional relationship of the claw portion 150 and the holding portion between the disk portions from a process point of view, ensuring positional accuracy. Rib 140 is along circumferencial direction evenly distributed, and the axial force evenly distributed that the fan rotated the drive is at claw 150, and claw 150 atress is even, reduces the motor and sweeps the thorax risk, guarantees that the motor operates steadily. The two ribs 140 and the claw portion 150 form a through hole 170, the through hole 170 separates the claw portion 150 from the disk portion in a radial direction, a noise propagation path is interrupted, and noise inside the fan cannot be transmitted to the claw portion 150, so that noise inside the fan cannot be transmitted to the fan connecting member, and noise is reduced.

As shown in fig. 1 and 2, the holding portion defines a bearing cavity, and an outer side wall of the holding portion is provided with at least one rotation preventing portion (first stopper portion 122). The rotation preventing portion extends axially along the outer side wall of the holding portion and is recessed inwards along the radial direction of the holding portion, and the rotation preventing portion is provided with a lower end face. The lateral wall of the holding part is provided with at least one axial limiting part, the axial limiting part comprises a limiting convex part (a second limiting part 124) and an avoiding concave part (an avoiding part 160), and the limiting convex part protrudes out of the lateral wall of the holding part along the radial direction of the holding part. The avoiding concave part is arranged on the radial inner side of the limiting convex part, so that a deformation space is formed between the limiting convex part and the main body of the holding part.

The rotation preventing portions are disposed at equal intervals in the circumferential direction on the outer circumferential surface of the bearing holding member. The rotation preventing parts are distributed uniformly along the circumferential direction of the holding part. By increasing the number of the rotation preventing portions, the reliability of connection can be improved, and the circumferential limit strength of the bearing holding member to the stator 240 is enhanced. Meanwhile, the plurality of axial limiting parts are uniformly distributed along the circumferential direction of the holding part, so that the relative acting force between the bearing holding part and the stator 240 is uniformly distributed, and the stability and the use reliability of the stator 240 are improved.

As shown in fig. 4 and 8, the stator 240 is sleeved outside the holding portion, and the stator 240 is provided with a rotation-preventing fitting portion (first positioning portion 2422), and the stator 240 includes an iron core and an insulating portion 246, and the rotation-preventing fitting portion is provided on the iron core or the insulating portion 246. The rotation preventing fitting portion protrudes radially inward along the inner wall of the stator 240 and extends in the axial direction. The rotation preventing portion is in contact with the rotation preventing fitting portion for defining a circumferential position of the stator 240 to restrict rotation of the stator 240 relative to the bearing holding member in the circumferential direction of the holding portion. The stator 240 is provided with a limit fitting portion (second positioning portion 2424), and the limit portion 120 is fitted with the limit fitting portion for limiting the axial position of the stator 240 to limit the axial movement of the stator 240 relative to the bearing holding member along the holding portion. The limiting and matching part comprises a matching concave part which is arranged on the inner side wall of the stator 240 and extends along the circumferential direction of the stator 240 to form a blind groove, and a stopping part 2426 is formed on one end surface of the blind groove.

Specifically, the derivative structure of the circumferential fixing structure of the outer rotor 230 fan is as follows:

the rotation preventing part is inwards sunken along the radial direction of the holding part and is provided with a lower end surface, and the lower end surface can be of a planar structure or a non-planar structure. The anti-rotation fitting portion protrudes radially along the inner wall of the stator 240 and has an upper end surface, which may be of a planar structure or a non-planar structure. The lower end surface of the stopper portion 120 is engaged with the upper end surface of the rotation preventing engagement portion to restrict circumferential movement of the stator 240 relative to the bearing holding member. In the assembling process, the upper end face and the lower end face are matched with an error-proofing function, so that the stator 240 and the bearing holding part are prevented from having an angle difference in the circumferential direction.

The rotation preventing portion is recessed radially inward along the holding portion and has a side surface and a bottom surface. The rotation-preventing fitting portion protrudes radially inward along the inner wall of the stator 240 and has a side surface and a top surface, and the side surface of the rotation-preventing portion is fitted with the side surface of the rotation-preventing fitting portion to restrict circumferential movement of the stator 240 relative to the bearing holding member.

In this embodiment, by the rotation preventing portion provided on the holding portion and the rotation preventing fitting portion provided on the stator 240 being fitted, the circumferential position of the stator 240 can be defined, thereby preventing the stator 240 from rotating circumferentially relative to the bearing holding member. Through spacing portion 120 and the cooperation of spacing cooperation portion, can inject the axial position of stator 240 to prevent that stator 240 reverse motion from taking place the axial float, improved stator 240's positional stability, and simple structure, the machine-shaping of being convenient for. And then the position stability of stator 240 has been improved, and then the use reliability of fan has been improved.

Further, the bearing holding member outer side is a protruding circumferential rotation preventing structure, as compared to the stator core 244 inner side groove structure. The inner side of the stator core 244 is provided with a convex anti-rotation matching part, and the outer side wall of the holding part is provided with a concave anti-rotation part, so that the yoke part of the stator core 244 can be ensured to be uniform in magnetic density and not influenced by the structure, and the motor can achieve better performance; the groove structure is cancelled to stator core 244 inboard, when punching sheet stamping forming, reduces here stress concentration, improves manufacturing stability. And the spacing convex part on the lateral wall of the holding part can be avoided by the matching concave part in the assembling process, so that the probability of interference, clamping stagnation and even clamping death between the stator 240 and the holding part in the assembling process is reduced, the assembling difficulty is further reduced, and the matching concave part contributes to the light weight of the fan.

In addition, as shown in fig. 6 to 8, in the assembling process, the stator 240 is sleeved outside the holding portion, and the stopping portion 2426 of the stator 240 goes over the limiting convex portion on the outer side wall of the holding portion and is in stopping fit with the limiting convex portion, so that the stator 240 is prevented from moving in the opposite direction and moving axially, the position stability of the stator 240 is improved, the structure is simple, and the processing and forming are convenient. Further, the stopper portion 120 is provided with an escape recess portion on the radially inner side thereof, so that a part of the stopper protrusion portion can move in a direction approaching the holding portion and elastically deform. Thus, when the stopper 2426 of the stator 240 presses the limit protrusion during the process of assembling the bearing holding member with the stator 240, the limit protrusion can elastically deform and move in a direction approaching the holding portion, so that the stator 240 can be quickly and smoothly mounted in place. After the stator 240 moves to the assembling position, the limiting convex part can be reset and deformed and is matched with the stopping part 2426 in a stopping way, so that the axial position of the stator 240 is limited. Therefore, the provision of the relief recess can effectively reduce the difficulty in assembling the bearing holding member and the stator 240, thereby improving the assembling efficiency. Further, the matching concave part is designed to be in a blind groove form, and one end face of the blind groove is used as the stopping part 2426, so that the process of independently processing the stopping part 2426 is not needed, the production process is facilitated to be simplified, and the production efficiency is improved. When stopping portion 2426 is matched with the stopping portion of the limiting convex portion, at least a portion of the limiting convex portion is embedded into the blind groove, so that the blind groove can limit relative movement between the bearing holding member and stator 240 along the axial direction of the holding portion, and can also limit relative movement between the bearing holding member and stator 240 along the circumferential direction of the holding portion, so that the structure of the outer rotor 230 fan provided by the scheme is more stable.

Specifically, when the radial outer edge of the limit convex part abuts against the radial outer edge of the matching concave part, the contact area between the limit convex part and the stator 240 is increased, and a relatively large static friction force can be generated after the assembly is completed, which is beneficial to preventing the limit convex part from separating from the stator 240, so that the matching stability of the stator 240 and the holding part is improved, and the position stability of the stator 240 is further improved.

In addition, the mechanical limit mode of the stop cooperation can effectively prevent the axial movement of the stator 240 when the fan is impacted, and can also effectively prevent the influence of high temperature and other environments, so that the use reliability is high.

Meanwhile, as shown in fig. 7, the limit protrusion is provided with a guide slope. Through setting up the direction inclined plane, make stator 240 in the assembling process, the motion is more smooth and easy to make bearing retainer block and stator 240 assemble more easily portably.

Claims (14)

1. A support assembly for mounting a stator and a bearing, comprising:

a mounting portion having a bearing cavity configured to mount the bearing;

at least one spacing portion, spacing portion locates the lateral wall of installation department, spacing portion can with the stator cooperation is connected, spacing portion is configured to the restriction the position of stator.

2. The support assembly of claim 1, wherein the restraint portion comprises:

the first limiting portion is arranged on the outer side wall of the mounting portion and extends along the axis direction of the bearing cavity, and the first limiting portion is configured to limit the circumferential position of the stator.

3. The support assembly of claim 2,

along the direction of perpendicular to the axis of bearing chamber, first spacing portion is constructed as the orientation the lateral wall of installation department extremely the recessed groove structure of the direction of the axis of bearing chamber, groove structure's cross-sectional shape is any one of arc, square and trapezoidal.

4. The support assembly of claim 1, wherein the restraint portion comprises:

the second limiting part is arranged on the outer side wall of the mounting part and extends along the circumferential direction of the bearing cavity, and the second limiting part is configured to limit the axial position of the stator.

5. The support assembly of claim 4,

the second limiting part is constructed into a protruding structure protruding away from the axis of the bearing cavity; and/or

The root of the second stopper portion is configured as a chamfered surface.

6. The support assembly of claim 4, further comprising:

dodge the portion, locate the lateral wall of installation department, dodge the portion and follow the axis direction of bearing chamber extends, dodge the portion and be constructed as the orientation the sunken groove structure of axis of bearing chamber, at least part dodge the portion and be located the spacing orientation of second one side of bearing chamber.

7. The support assembly according to any one of claims 1 to 6,

a plurality of spacing portion is followed bearing chamber circumference direction interval set up in the lateral wall of installation department.

8. The support assembly of any of claims 1-6, further comprising:

the seat body is connected with the mounting part;

a rib connected with the housing and disposed around the housing, the rib being configured as a circular arc structure recessed toward an axis of the bearing cavity;

and a claw portion connected to the rib portion, the claw portion having an opening facing away from an axial direction of the bearing chamber.

9. The support assembly of claim 8,

the base is constructed as a disc structure;

the number of the rib parts is at least three, the at least three rib parts are uniformly distributed along the circumferential direction of the seat body, the end parts of the at least three rib parts are sequentially connected, the rib parts and the seat body can form a through hole in a surrounding mode, and the through hole is configured to separate the claw part from the seat body.

10. A drive device, comprising:

the support assembly of any one of claims 1 to 9;

the bearing is arranged in the bearing cavity of the mounting part;

the stator is sleeved on the mounting part, the inner wall surface of the stator is provided with a positioning part, and the positioning part is connected with the limiting part in a matching way;

the rotor is sleeved on the stator.

11. The drive device of claim 10, wherein the stator comprises:

a stator core;

an insulating part covering a wall surface of the stator core;

the positioning portion is provided on an inner wall surface of the stator core or an insulating portion on the inner wall surface of the stator core.

12. The drive device according to claim 11, wherein the positioning portion includes:

the first positioning part extends along the axial direction of the stator core, the first positioning part is constructed into a protruding structure protruding towards the axial line of the stator core, and at least part of the first positioning part can be arranged in the first limiting part of the supporting component.

13. The drive device according to claim 11, wherein the positioning portion includes:

the second positioning portion extends along the circumferential direction of the stator core, the second positioning portion is constructed to deviate from the recessed groove structure of the axis of the stator core, and at least part of the second limiting portion of the supporting assembly can be arranged in the second positioning portion.

14. A fan, comprising:

a load;

a drive arrangement according to any one of claims 10 to 13 connected to the load.

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