CN218449697U

CN218449697U - Brushless variable frequency motor capable of preventing deformation of bearing chamber

Info

Publication number: CN218449697U
Application number: CN202222754630.0U
Authority: CN
Inventors: 吴永红; 曾艺成
Original assignee: Zhongshan Gchimay Electric Appliance Co ltd
Current assignee: Zhongshan Gchimay Electric Appliance Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-02-03
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a prevent brushless inverter motor of deformation of bearing room belongs to little special motor technical field, including base and base one side fixed connection's bearing room, the brushless inverter motor body of outside installation of base, a plurality of muscle position has been seted up to the surface equidistance of bearing room, the internally mounted of muscle position has the rib for contact bearing. The utility model discloses the place that motor cabinet rear end close-fitting combined has become many muscle positions to reduce the area of contact with stator core, reduce the range of meeting an emergency, strengthening rib structure simple to use reduces the mechanical stress of bearing during operation, prevents that the bearing room from warping, and the bearing damages the motor bearing sound problem that leads to.

Description

Brushless variable frequency motor capable of preventing deformation of bearing chamber

Technical Field

The utility model relates to a little special motor technical field, more specifically say, relate to a prevent brushless inverter motor of deformation of bearing room.

Background

The micro special motor is a micro special motor which is called a micro motor sometimes, and generally refers to a micro special motor with the diameter of less than 160mm, or rated power, or special performance and special purpose. Miniature special motors are commonly used in control systems of various air conditioners or fans, and are used for driving mechanical loads.

Although the device has more beneficial effects, the following problems still exist: after the motor base and the stator are tightly matched and pressed in and combined, the wall thickness of the space between the motor base and the bearing chamber is very small, so that the wall thickness is deformed in the pressing-in process, the bearing chamber for placing the bearing is deformed, and the bearing cannot be placed in the bearing chamber.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

An object of the utility model is to provide a prevent brushless inverter motor of deformation of bearing room to the motor cabinet and the stator tight fit that provide in solving above-mentioned background art are impressed and are combined the back, because the interval wall thickness of motor cabinet and bearing room is very little, can lead to the wall thickness to warp at the in-process of impressing, and the bearing room of putting the bearing takes place to warp, leads to the bearing can not put into the problem of bearing room.

2. Technical scheme

The utility model provides a prevent brushless inverter motor of deformation of bearing room, includes base and base one side fixed connection's bearing room, the brushless inverter motor body of outside installation of base, a plurality of muscle position has been seted up to the surface equidistance of bearing room, the internally mounted of muscle position has the rib that is used for contacting the bearing.

Preferably, the bearing chamber is a cylindrical bearing chamber with a cylindrical cavity, the rib positions are first rib positions which are circumferentially distributed outside the cylindrical bearing chamber in an array manner, and the ribs are first reinforcing ribs fixedly mounted inside the first rib positions.

Preferably, the bearing chamber is a prismatic bearing chamber with a prismatic cavity, the rib positions are second rib positions distributed on the outer side of the prismatic bearing chamber in a circumferential array mode, and the ribs are second reinforcing ribs fixedly installed inside the second rib positions.

Preferably, the bent angle position of the second rib position is provided with an air inlet, and a filter screen is arranged inside the air inlet.

Preferably, a plurality of air outlets are formed in the second reinforcing rib, one end of each air outlet is located on one side wall of the second reinforcing rib, the other end of each air outlet is located on the outer wall of the second reinforcing rib, and a wind shield is mounted at a position, close to the air inlet, of the inner side of the prismatic bearing chamber.

Preferably, the inner side wall of the second reinforcing rib is provided with an arc-shaped side wall at a position corresponding to the bearing.

Preferably, the surface of filter screen is equipped with a plurality of ventilative hole, and the dog-ear of filter screen equals the setting with the dog-ear angle of prismatic bearing room, and a plurality of ventilative hole is linear array and distributes on two lateral wall surfaces of filter screen.

Preferably, two side walls of the middle position of the wind shield are both provided with cambered surfaces and form double-sided cambered walls, one end part of the wind shield is fixedly connected with the inner side wall of the prismatic bearing chamber, and the other end part of the wind shield is provided with a hook-shaped bent towards the prismatic bearing chamber to form a hook-shaped plate.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

1. through the utility model discloses a base and bearing room structure have become many muscle positions in the place that motor cabinet rear end close-fitting combined to reduce with stator core's area of contact, reduce the strain range, the mechanical stress of simple to use's strengthening rib structure reduces the bearing during operation, prevents that the bearing room from warping, and the motor bearing sound problem that the bearing damage leads to.

2. The utility model discloses a cross the wind gap and admit air, the carminative structure of air outlet for the heat that the indoor portion of bearing during operation produced can flow from the air outlet along the flow of air current, and new gas gets into prismatic bearing room appearance portion after filtering through the filter screen from the air intake, replenish pressure under the prerequisite that does not influence the inner structure precision, form the environment of low temperature air current and high temperature air current cyclic motion, reduce the heat that the indoor portion of bearing produced, thereby keep the indoor portion of bearing's operational environment's temperature suitability.

Drawings

Fig. 1 is a schematic view of a part of the structure in embodiment 1 of the present invention;

fig. 2 is a schematic view of a part of the structure in embodiment 2 of the present invention;

fig. 3 is an exploded view of a part of the structure of embodiment 2 of the present invention;

fig. 4 is a cross-sectional view of a part of the structure in embodiment 2 of the present invention;

FIG. 5 is an enlarged view of the structure A of FIG. 4;

fig. 6 is a schematic structural view of the second reinforcing rib, the filter screen, and the wind deflector in embodiment 2 of the present invention when detached;

fig. 7 is a schematic structural view of a second reinforcing rib in embodiment 2 of the present invention;

the reference numbers in the figures illustrate: 1. a base; 2. a cylindrical bearing chamber; 3. a first rib position; 4. a first reinforcing rib; 5. a prismatic bearing chamber; 6. a second rib position; 7. a second reinforcing rib; 8. an air outlet; 9. filtering with a screen; 10. a wind deflector; 11. an air outlet; 12. an arcuate sidewall; 13. a wind eye; 14. a hook plate; 15. double-sided arc wall.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Please refer to fig. 1, this embodiment provides a brushless variable frequency motor for preventing deformation of a bearing chamber, a plurality of rib positions are disposed at a position where a rear end of a motor base is tightly fitted and combined, the motor base and a stator are tightly fitted and press-fitted and combined, and then a bearing is further disposed in the bearing chamber, ribs are disposed inside first rib positions 3, in this embodiment, the bearing chamber is a cylindrical bearing chamber 2 having a cylindrical cavity, the rib positions are first rib positions 3 distributed at an outer side of the cylindrical bearing chamber 2 in a circumferential array manner, the ribs are first reinforcing ribs 4 fixedly disposed inside the first rib positions 3, three first reinforcing ribs 4 are disposed at the position where the rear end of the motor base is tightly fitted and combined, thereby reducing a contact area between the cylindrical bearing chamber 2 and a stator core, and reducing a strain range, and lengths of the first reinforcing ribs 4 and the first reinforcing ribs 3 do not exceed a range length of a front end and a rear end of the bearing chamber, a micro-special motor body used in an air conditioner or a fan is a micro special motor used in this embodiment, which a micro special motor is not installed in a conventional motor base.

Example 2

Referring to fig. 2 to 7, in the present embodiment, a plurality of rib locations are disposed at a location where a rear end of a motor base is tightly fitted and combined, after the motor base and a stator are tightly fitted and press-fitted and combined, a bearing is further placed in the bearing chamber, ribs are mounted inside a first rib location 3, in the present embodiment, the bearing chamber is a prismatic bearing chamber 5 having a prismatic cavity, the rib locations are second rib locations 6 circumferentially distributed in an array manner outside the prismatic bearing chamber 5, the ribs are second reinforcing ribs 7 fixedly mounted inside the second rib locations 6, a location where the rear end of the motor base is tightly fitted and combined is changed into six second reinforcing ribs 7, so that a contact area between the prismatic bearing chamber 5 and a stator core is reduced, a strain range is reduced, lengths of the second reinforcing ribs 7 and the second reinforcing ribs 6 do not exceed a range length of a front end and a rear end of the bearing chamber, a motor body is a micro-special motor used in an air conditioner or a fan, and the present embodiment is a micro-special motor used in a fan, and is a conventional motor base mounting method.

Specifically, the air inlet 8 has been seted up to the dog-ear position department of second muscle position 6, outside gas enters into prismatic bearing room 5 inside through air inlet 8, the internally mounted of air inlet 8 has filter screen 9, the air through air inlet 8 is filtered by filter screen 9, it is inside to block the dust to get into prismatic bearing room 5, the inboard position department that is close to air inlet 8 of prismatic bearing room 5 installs deep bead 10, the air that gets into prismatic bearing room 5 is blockked by deep bead 10, the gas after being blockked slows down along the surface of deep bead 10 and gets into inside prismatic bearing room 5, thereby realize the effect of admitting air.

It is worth noting that a plurality of air outlet 11 has been seted up to second strengthening rib 7's inside, an end of air outlet 11 is located a second strengthening rib 7 lateral wall, another tip of air outlet 11 is located the outer wall of second strengthening rib 7, air outlet 11 forms the shape of similar L shape on the cross section of second strengthening rib 7, thereby make the inside gaseous 11 ports of air outlet from second strengthening rib 7 lateral wall of prismatic bearing room 5 get into, and flow through the port on the second strengthening rib 7 outer wall, thereby realize the effect of giving vent to anger, the heat that the bearing during operation produced is taken away to the flowing gas, thereby realize the cooling to the bearing.

In addition, the position department that the inside wall of second strengthening rib strip 7 corresponds the bearing sets to arc lateral wall 12, and arc lateral wall 12 and the lateral wall cambered surface looks adaptation of bearing to improve the laminating effect of arc lateral wall 12 and bearing.

It has to be said that, the surface of the filter screen 9 is provided with a plurality of ventilation holes 13, the folding angle of the filter screen 9 is equal to the folding angle of the prism bearing chamber 5, the plurality of ventilation holes 13 are distributed on the two side wall surfaces of the filter screen 9 in a linear array, the ventilation holes 13 are arranged such that the opening of one end part far away from the prism bearing chamber 5 is large, and the opening of one end part close to the prism bearing chamber 5 is small, which is convenient for the air outside the prism bearing chamber 5 to enter and is inconvenient for the air inside the prism bearing chamber 5 to flow out.

Furthermore, two side walls at the middle position of the wind shield 10 are both set into cambered surfaces and form a double-faced arc wall 15, the double-faced arc wall 15 of the cambered surfaces facilitates air flow, the double-faced arc wall 15 close to one side of the prism bearing chamber 5 facilitates bearing movement to drive air to form vortex in the prism bearing chamber 5, when the double-faced arc wall 15 far away from one side of the prism bearing chamber 5 facilitates air inlet, the air is attached to the surface of the double-faced arc wall 15 to form a guide to the wind direction, one end part of the wind shield 10 is fixedly connected with the inner side wall of the prism bearing chamber 5, the other end part of the wind shield 10 is set into a hook shape bent towards the prism bearing chamber 5 to form a hook-shaped plate 14, when the air enters the prism bearing chamber 5 through the filter screen 9, the air firstly moves towards the direction of the hook-shaped double-faced arc wall 15 of the cambered surfaces, the air flows towards a gap cavity formed by the hook-shaped plate 14 and the side wall of the prism bearing chamber 5 along the hook-shaped plate 14, and flows towards the inside of the prism bearing chamber 5 from the gap cavity;

it should be noted that, when the bearing inside the prismatic bearing chamber 5 works, the bearing inside the prismatic bearing chamber 5 rotates and generates heat to form a hot air flow similar to a vortex and moving in a spiral manner, when the hot air flow moves, a main part of the hot air flow can follow the surfaces of the double-sided arc walls 15, enters from the air outlet 11 of the side wall of the second reinforcing rib 7 and flows out from the air outlet 11 of the outer wall of the second reinforcing rib 7, so that the hot air inside the prismatic bearing chamber is not cut off, the bearing is cooled, meanwhile, under the action of pressure, the outside air can enter the prismatic bearing chamber 5 through the filter screen 9, the temperature of the entering air is lower than that of the flowing gas, the low-temperature gas flows to the hook-shaped plate 14 along the surfaces of the double-sided arc walls 15 and flows to the inside the prismatic bearing chamber 5 from the clearance cavity, due to the unique structure of the wind shield 10, the flow rate of the low-temperature gas flowing into the inside from the outside of the prismatic bearing chamber 5 is higher than that of the inside the prismatic bearing chamber 5, so that the high-temperature gas does not cut off, the pressure of the prismatic bearing chamber is balanced, and the heat is continuously taken away.

The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only the preferred embodiments of the present invention, and is not intended to limit the present invention, and that there may be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a prevent brushless inverter motor of deformation of bearing room, includes base (1) and base (1) one side fixed connection's bearing room, the brushless inverter motor body of outside installation of base (1), its characterized in that: a plurality of rib positions are arranged on the outer surface of the bearing chamber at equal intervals, and ribs for contacting the bearing are arranged inside the rib positions.

2. The brushless inverter motor for preventing deformation of a bearing housing according to claim 1, wherein: the bearing chamber is a cylindrical bearing chamber (2) with a cylindrical cavity, the rib positions are first rib positions (3) distributed on the outer side of the cylindrical bearing chamber (2) in a circumferential array mode, and the ribs are first reinforcing ribs (4) fixedly mounted inside the first rib positions (3).

3. A brushless inverter motor for preventing deformation of a bearing housing according to claim 1, wherein: the bearing chamber is a prismatic bearing chamber (5) with a prismatic cavity, the rib positions are second rib positions (6) distributed on the outer side of the prismatic bearing chamber (5) in a circumferential array mode, and the ribs are second reinforcing ribs (7) fixedly installed inside the second rib positions (6).

4. A brushless inverter motor for preventing deformation of a bearing housing according to claim 3, wherein: air intake (8) have been seted up to the dog-ear position department of second muscle position (6), the internally mounted of air intake (8) has filter screen (9).

5. The brushless inverter motor for preventing deformation of a bearing housing according to claim 4, wherein: a plurality of air outlet (11) has been seted up to the inside of second strengthening rib (7), and a tip of air outlet (11) is located a second strengthening rib (7) lateral wall, and another tip of air outlet (11) is located the outer wall of second strengthening rib (7), deep bead (10) are installed to the inboard position department that is close to air intake (8) of prismatic bearing room (5).

6. A brushless variable frequency motor preventing deformation of a bearing housing according to claim 5, wherein: the inner side wall of the second reinforcing rib (7) is provided with an arc-shaped side wall (12) at a position corresponding to the bearing.

7. The brushless inverter motor for preventing deformation of a bearing housing according to claim 5, wherein: the surface of the filter screen (9) is provided with a plurality of ventilation holes (13), the angle of the filter screen (9) is equal to that of the prismatic bearing chamber (5), and the ventilation holes (13) are distributed on the surfaces of two side walls of the filter screen (9) in a linear array manner.

8. A brushless variable frequency motor preventing deformation of a bearing housing according to claim 5, wherein: two side walls at the middle position of the wind shield (10) are both arranged to be cambered surfaces and form a double-faced cambered wall (15), one end part of the wind shield (10) is fixedly connected with the inner side wall of the prismatic bearing chamber (5), and the other end part of the wind shield (10) is arranged to be in a hook shape bent towards the prismatic bearing chamber (5) to form a hook-shaped plate (14).