WO2023124038A1

WO2023124038A1 - Electric motor protection structure and air output device

Info

Publication number: WO2023124038A1
Application number: PCT/CN2022/107559
Authority: WO
Inventors: 白建东; 侯剑飞; 陈正超; 赵文杰; 张逸鸿; 刘哲
Original assignee: 珠海格力电器股份有限公司
Priority date: 2021-12-31
Filing date: 2022-07-25
Publication date: 2023-07-06
Also published as: CN114285207A

Abstract

Provided in the present application are an electric motor protection structure and an air output device. The electric motor protection structure comprises: a base body, which comprises a first cavity, the first cavity being suitable for accommodating an electric motor, and a first opening being formed in the end of the first cavity that is away from an electric motor output shaft; and a cover body, which comprises a main cover, the main cover being in sealed connection with the first opening and being suitable for shielding the first opening, a flow guide surface being arranged on the side of the main cover that is away from the first opening, and the flow guide surface being configured to be of an arc surface shape and being suitable for dispersing and guiding an airflow flowing towards the main cover. A closed cavity is formed by the first cavity and the main cover which are connected to each other in a sealing manner to wrap the electric motor therein, so that the protection of the whole structure of the electric motor is achieved, and water is prevented from entering the electric motor and dampening the electric motor; moreover, the main cover is arranged on an air intake side away from the electric motor output shaft, and the arc-shaped flow guide surface on the main cover is provided to be windward, with an edge being streamlined, so that the flow guide surface provided in such a manner enables the airflow to slide along an arc surface, such that the wind resistance of a windward side of the electric motor protection structure is reduced, the airflow kinetic energy loss is further reduced, and the air output amount of a fan provided with the electric motor protection structure is improved.

Description

Motor protection structure and air outlet device

technical field

The present application relates to the technical field of fans, in particular to a motor protection structure and an air outlet device.

Background technique

At present, the motor of the cooling fan is generally installed between the air inlet and the air outlet. When the cooling fan turns on the humidification or cooling function, the inlet air is blown out after passing through the humidification device. During this process, if the motor is not protected, it will be exposed to moisture. In the air, the motor will be affected by moisture and water after a long time, reducing the service life.

In the prior art, a protective structure covering the motor is usually installed to provide protection for the motor and prevent the motor from being affected by moisture and water. However, the structure of the common protection device is relatively complicated. The air volume of the fan.

application content

Therefore, the technical problem to be solved in this application is to overcome the defect in the prior art that the protective structure of the motor affects the air output of the whole machine, so as to provide a protective structure for the motor and an air outlet device.

In order to achieve the above object, according to one aspect of the present application, a motor protection structure is provided, including: a base body including a first cavity, the first cavity is suitable for accommodating the motor, and the first cavity is far away from the One end of the output shaft of the motor is provided with a first opening; the cover body includes a main cover, the main cover is in sealing connection with the first opening, and is suitable for blocking the first opening, and the main cover is far away from the first opening. One side of the opening is provided with a guide surface, and the guide surface is arc-shaped, suitable for dispersing and guiding the airflow flowing towards the main cover.

Preferably, the base further includes a second cavity, the second cavity is arranged along the circumference of the first opening, the second cavity is provided with a second opening, the second cavity communicates with the first cavity, and is suitable for accommodating The motor wire; the cover body also includes a wire crimping plate, which is connected to the main cover and detachably sealed with the second opening, and is suitable for covering the second opening.

Preferably, the second opening is arranged in the same direction as the first opening.

Preferably, the pressure plate and the main cover are integrally formed.

Preferably, there are several first stoppers distributed circumferentially along the inner wall of the first cavity, and the side of the main cover facing the first cavity is provided with several second stoppers, the first stopper and the second stopper detachable snap-fit connections.

Preferably, the first limiting member protrudes along the inner wall of the first cavity, and includes a first barb and a first abutment, the first barb extends in the circumferential direction, and the first abutment is away from the first The barb part extends axially; the second limiting part includes a second barb part and a second abutment part, the second barb part is arranged along the circumferential direction, and the second abutment part is away from the second barb part and along the Extending in the axial direction, the second barb part is placed in the first cavity under the action of an external force, and rotates along the first rotation direction to a position-limiting state in which it is snap-connected with the first barb part.

Preferably, the second cavity includes a main cavity and a wire groove, the main cavity is adjacent to and communicated with the first cavity, and the wire groove is connected to the main cavity and extends in a direction away from the first cavity; the wire pressing plate It includes a main board and an extension board. The extension board is connected to the main board and extends in a direction away from the main cover. The main board and the main cavity are correspondingly sealed and connected, and the extension board is correspondingly sealed and connected to the wire groove.

Preferably, a first connecting piece is provided on the outer wall of the main cavity, and a second connecting piece protrudes from the outer edge of the main board. Rotate and move to the installation position abutting against the outer wall of the main cavity, when in the installation position, the second connecting piece is detachably connected to the first connecting piece.

Preferably, the side wall of the trunking is provided with a limiting protrusion protruding along the direction of the second opening, the side wall of the extension plate is provided with a limiting groove set sideways to the opening, and the limiting groove and the second connecting piece They are separately arranged on both sides of the wire crimping plate, and are suitable for accommodating the limiting protrusion in the limiting groove when the second connecting piece moves to the installation position, and abutting against the limiting protrusion.

Preferably, one end of the first cavity facing the output shaft of the motor is further provided with a motor shaft hole and a plurality of heat dissipation holes, the motor shaft hole is arranged on the middle side of the end of the first cavity, and is suitable for the output shaft of the power supply to pass through. The cooling holes are arranged along the periphery of the motor shaft hole.

According to another aspect of the present application, an air outlet device is provided, including: an air passage with a built-in accommodation cavity, and an air inlet and an air outlet are also arranged on the air passage; the driving part includes a motor and a Fan blades on the output shaft; the above-mentioned motor protection structure, the motor protection structure is arranged in the accommodation chamber, the motor is arranged in the first chamber, and the guide surface is arranged toward the direction of the air inlet.

Preferably, the seat body further includes: an outer ring piece, which is sleeved on the outside of the first cavity, arranged concentrically with the first cavity, and connected with the inner wall of the air passage; several support pieces, connected The outer wall of the first cavity is connected with the inner wall of the outer ring; the second cavity on the base body is respectively connected to the first cavity and the outer ring, and the outer ring is also provided with a wire hole communicating with the second cavity.

Preferably, the second cavity and the support are profiled, and the second cavity and the plurality of supports are evenly distributed between the first cavity and the outer ring.

Preferably, the air outlet device is a cooling fan.

The technical solution of the present application has the following advantages:

1. The motor protection structure provided by the present application includes: a seat body, including a first cavity, the first cavity is suitable for accommodating the motor, and a first opening is provided at the end of the first cavity away from the output shaft of the motor; a cover body, including The main cover, the main cover is sealingly connected with the first opening, suitable for blocking the first opening, the side of the main cover away from the first opening is provided with a diversion surface, the diversion surface is arranged in an arc shape, suitable for dispersing and guiding towards the main Cover the flow of airflow.

By setting the first cavity and the main cover which are sealed and connected to form a closed cavity to wrap the motor, the overall structure of the motor can be protected and the motor can be protected from water and moisture. At the same time, the main cover is set on the air inlet side away from the output shaft of the motor The arc-shaped guide surface is set upwindward, and its edge is streamlined. The guide surface set in this way can make the air flow slide along the arc surface, reduce the wind resistance on the windward side of the motor protection structure, thereby reducing the loss of air kinetic energy and improving the design. The air output of the fan with motor protection structure. Such setting is simple and easy to implement, and effectively overcomes the defect in the prior art that the protective structure of the motor affects the air output of the whole machine.

2. In the motor protection structure provided by this application, the seat body also includes a second cavity, the second cavity is arranged along the circumference of the first opening, the second cavity is provided with a second opening, and the second cavity is connected to the first opening. The cavity communicates and is suitable for accommodating motor wires; the cover body also includes a wire clamping plate, which is connected to the main cover and detachably sealed with the second opening, and is suitable for covering the second opening.

By combining the second cavity and the pressure plate, the motor wires are further protected in the second cavity, which not only prevents the motor wires from running around, realizes clustering, but also prevents the motor wires from being damp, which improves the service life.

3. The motor protection structure provided by this application, the pressure plate and the main cover are integrally formed.

The one-piece crimping plate and the main cover make there is no seam at the connection position between the two, which improves the sealing performance during the mating process of the cover body and the seat body, and further improves the protection effect on the motor and the motor line.

4. In the motor protection structure provided by this application, a first connector is provided on the outer wall of the main cavity, and a second connector protrudes from the outer edge of the main board. When the second barb is in a position-limiting state, the first connector The second connecting part rotates in the first rotation direction under the action of external force, and moves to the installation position abutting against the outer wall of the main cavity. In the installation position, the second connecting part is detachably connected to the first connecting part.

Fasten the main cover on the first cavity and turn it in the first rotation direction until the first barb on the first limiter is engaged with the second barb on the second limiter and is in the Position limit state, at this time, the second connector on the main board of the pressure plate has also rotated to the installation position abutting against the outer wall of the main cavity of the second cavity, and in this installation position, the second connector and the first A connecting piece can realize fixed connection.

This arrangement makes the connection between the second connecting piece and the first connecting piece, and the connection between the second connecting piece and the second limiting piece and the first limiting piece realize linkage, ensuring that the connection between the main cavity and the main board is tight. At the same time, it can further realize the installation and positioning between the main cover and the first cavity, as well as between the pressure plate and the second cavity, and play the role of a positioning part. In addition, it can also be used as the first abutment and the second abutment. The redundant structure of components improves the stability and accuracy of installation and positioning.

5. In the motor protection structure provided by this application, the side wall of the trunking is provided with a limit protrusion protruding along the direction of the second opening, and the side wall of the extension plate is provided with a limit groove set laterally to the opening to limit The positioning groove and the second connecting piece are separately arranged on both sides of the pressure plate, and are suitable for accommodating the limiting protrusion in the limiting groove when the second connecting piece moves to the installation position, and abutting against the limiting protrusion.

The setting of the limit protrusion and the limit groove also ensures the fastness of the connection between the wire groove and the extension plate, and at the same time further realizes the installation and positioning between the main cover and the first cavity, as well as between the crimping plate and the second cavity , which plays the role of a positioning part. In addition, it can also be used as a redundant structure of the first abutting part and the second abutting part, as well as the second connecting part and the first connecting part, which improves the stability and accuracy of the installation and positioning. sex.

6. In the air outlet device provided by the present application, the second cavity and the support members are arranged in a profiling manner, and the second cavity and several support members are evenly distributed between the first cavity and the outer ring.

The profiling and uniform distribution of the second cavity and the support makes the combined structure of the second cavity and the pressure plate not only seal and transport the motor wire, but also strengthen the gap between the first cavity and the outer ring. The role of connection stability, and effectively balance the connection strength at various positions between the first cavity and the outer ring.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or prior art. Obviously, the accompanying drawings in the following description The figures show some implementations of the present application, and those skilled in the art can obtain other figures based on these figures without any creative effort.

FIG. 1 is a schematic diagram of the internal structure of an air outlet device provided in an embodiment of the present application;

Fig. 2 is a three-dimensional structural schematic diagram of a motor protection structure with a built-in motor in the air outlet device shown in Fig. 1;

Fig. 3 is a three-dimensional structural schematic diagram of the motor protection structure shown in Fig. 2 when the cover is removed;

Fig. 4 is a three-dimensional schematic diagram of the motor protection structure shown in Fig. 3 when the motor is removed;

Fig. 5 is a schematic diagram of the three-dimensional structure of the cover in the air outlet device shown in Fig. 1;

Fig. 6 is a schematic side view of the cover shown in Fig. 5;

FIG. 7 is a schematic perspective view of another angle of the cover body in the air outlet device shown in FIG. 1 .

Mark Description:

1-base; 11-first cavity; 111-first opening; 112-motor shaft hole; 113-radiation hole; 12-second cavity; 121-second opening; 122-main cavity; 123- Trunk; 13-first limit piece; 131-first barb piece; 132-first abutment piece; 14-first connecting piece; 15-limit protrusion; 16-outer ring piece; 17-support 2-cover body; 21-main cover; 211-guiding surface; 22-clamping plate; 221-main board; 222-extension plate; 23-second limit piece; - the second abutting piece; 24 - the second connecting piece; 25 - the limit slot; 3 - the air inlet; 4 - the air outlet; 5 - the motor; 51 - the motor wire; 6 - the wind blade; 7 - the wet curtain.

Detailed ways

The technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplification of the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific orientation construction and operation, therefore should not be construed as limiting the application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

In addition, the technical features involved in the different embodiments of the present application described below may be combined as long as they do not constitute a conflict with each other.

As shown in FIGS. 1-7 , this embodiment provides a motor protection structure, including a base 1 and a cover 2 .

The seat body 1 includes a first cavity 11, which is cylindrically arranged and can accommodate the motor 5 inside. The end of the first cavity 11 away from the output shaft of the motor 5 is provided with a first opening 111. In this embodiment Among them, the shape of the first opening 111 is the same as the cross section of the first cavity 11 .

In addition, one end of the first cavity 11 facing the output shaft of the motor 5 is provided with a motor shaft hole 112 and a plurality of cooling holes 113, the motor shaft hole 112 is arranged on the middle side of the end of the first cavity 11, and the output of the power supply motor 5 The shaft passes through, and several motor mounting holes are provided on the adjacent peripheral side of the motor shaft hole 112, which are used to fix and connect the motor 5 by screws, and several cooling holes are provided at the junction of the side end and the side wall of the first cavity 11 113 , the heat dissipation holes 113 are also uniformly distributed along the circumference of the motor shaft hole 112 to facilitate the heat dissipation of the motor 5 .

The cover body 2 includes a main cover 21, which is detachably and hermetically connected to the first opening 111 through the limit steps provided at the respective edges. Opening 111, the side of the main cover 21 away from the first opening 111 is provided with a guide surface 211, the guide surface 211 is arranged in an arc shape protruding toward the outside of the first cavity 11, and its vertical section is arranged in a streamlined shape, which can The airflow flowing toward the main cover 21 is dispersed and guided.

By setting the first cavity 11 and the main cover 21 that are sealed and connected to form a closed cavity to wrap the motor 5, the protection of the overall structure of the motor 5 is realized, and the motor 5 is prevented from entering water and getting wet. At the same time, the main cover 21 is arranged far away from the output shaft of the motor 5. On the air inlet side, the curved guide surface 211 on it is arranged facing the wind, and its edge is streamlined. The guide surface 211 set in this way can make the air flow slide along the arc surface, reducing the wind resistance of the windward side of the motor protection structure. Furthermore, the loss of air kinetic energy is reduced, and the air output of the fan provided with the motor protection structure is increased. Such setting is simple and easy to implement, and effectively overcomes the defect in the prior art that the protective structure of the motor 5 affects the air output of the whole machine.

The seat body 1 also includes a second cavity 12, which is in the shape of a square groove and arranged along the circumference of the first opening 111. The second cavity 12 is provided with a second opening 121. In this embodiment, The first opening 111 and the second opening 121 open in the same direction, which is convenient for the design and production of the cover body 2, so that the first opening 111 and the second opening 121 can be snapped together at the same time, and the second cavity 12 and the first cavity 11 Connected, can accommodate the motor line 51.

The cover body 2 also includes a wire pressing plate 22, which is in the shape of a long strip. Along the circumferential direction of the main cover 21, the wire pressing plate 22 is connected to the main cover 21 and abuts against the second opening 121. The wire pressing plate 22 passes through the Connecting parts such as screws are detachably connected in a sealed manner, and the wire pressing plate 22 is suitable for covering the second opening 121 .

By combining the second cavity 12 and the wire pressing plate 22, the motor wires 51 are further protected in the second cavity 12, which not only prevents the motor wires 51 from running around, realizes clustering, but also prevents the motor wires 51 from getting wet, which improves the use life.

In this embodiment, the crimping plate 22 and the main cover 21 are integrally formed. The integrally formed crimping plate 22 and the main cover 21 make there is no seam at the connection position between the two, and the cover body 2 and the seat body 1 are improved. The tightness in the matching process further improves the protection effect on the motor 5 and the motor wire 51 . In addition, the first cavity 11 and the second cavity 12 are integrally formed, and further, the first cavity 11 and the second cavity 12 are integrally formed with the outer ring 16 and the support 17 .

A number of first stoppers 13 are evenly distributed along the circumference of the inner wall of the first cavity 11, and a number of second stoppers 23 are uniformly arranged on the side of the main cover 21 facing the first cavity 11. The first stoppers 13 It is detachably engaged with the second limiting member 23 . The specific forms of the first limiting member 13 and the second limiting member 23 are not limited, they may be engaged with a buckle and a slot, may be engaged with a spring and a hook, or may be other connection forms, such as the first The first limiting member 13 and the second limiting member 23 are magnetically connected or bonded.

In this embodiment, the first limiting member 13 protrudes along the inner wall of the first cavity 11 and includes a first barb 131 and a first abutting member 132. The first barb 131 extends along the circumferential direction, The first abutment piece 132 is away from the first barb piece 131 and extends in the axial direction; the second limiting piece 23 includes several second barb pieces 231 and second abutment piece 232, and the second barb piece 231 is along the circumferential direction It is provided that the second abutting member 232 is away from the second barb member 231 and extends in the axial direction, and the second barb member 231 has the function of being placed in the first cavity 11 under the action of an external force, and rotates to A position-limiting state of engaging connection with the first barb member 131 .

The first abutting piece 132 can limit the second barb 231 , and the second abutting piece 232 can limit the first abutting piece 132 , and through the limitation of the abutting piece and the barb, the first cavity 11 And the main cover 21 can realize rotation fixing. In this embodiment, the first abutting piece 132 and the second abutting piece 232 are also provided with reinforcing ribs, and the main cover 21 is also provided with a number of abutting pieces, and the abutting piece is in contact with each second limiting piece 23. The main cover 21 is adjacent to the inner wall of the first cavity 11 to enhance the overall stability of the connection between the main cover 21 and the first cavity 11 .

The second cavity 12 includes a main cavity 122 and a trunking 123. The volume of the main cavity 122 is smaller than that of the first cavity 11. The main cavity 122 is square and adjacent to and communicated with the first cavity 11. The wire groove 123 is arranged in the shape of a long groove, connected with the main cavity 122, and extends in a direction away from the first cavity 11; the pressure plate 22 includes a main board 221 in the shape of an imitation square plate and an extension plate in the shape of a slat 222, the extension plate 222 is connected to the main board 221, and extends away from the main cover 21, the main board 221 is connected to the main cavity 122 through the corresponding sealing connection of the limit step, and the extension plate 222 is connected to the trunking 123 through the corresponding sealing connection of the limit step.

In this embodiment, the first connecting piece 14 is provided on the outer wall of the main cavity 122, and the second connecting piece 24 protrudes from the outer edge of the main board 221. In the position-limited state, the second connecting piece 24 has a Under the action of external force, it rotates along the first rotation direction and moves to the installation position where it abuts against the outer wall of the main cavity 122 . In the installation position, the second connecting member 24 is detachably connected to the first connecting member 14 . In this embodiment, the first connecting piece 14 is a lug with a screw hole, and the second connecting piece 24 is a screw post, both of which can be fixed by screws. As a changeable embodiment, the first connecting piece 14 and the second connecting piece The two connecting pieces 24 can also be engaged in slots and protrusions respectively.

Fasten the main cover 21 on the first cavity 11 and rotate it in the first direction until the first barb 131 on the first stopper 13 and the second barb on the second stopper 23 231 is engaged and connected and is in a position-limited state. At this time, the second connecting piece 24 on the main board 221 of the pressure plate 22 has also rotated to the installation position abutting against the outer wall of the main cavity 122 of the second cavity 12. In this installation position, the second connecting member 24 can be fixedly connected to the first connecting member 14 .

This arrangement makes the connection between the second connecting piece 24 and the first connecting piece 14, and the connection between the second connecting piece 24 and the second limiting piece 23 and the first limiting piece 13 realize linkage, ensuring that the main cavity is realized. 122 and the main board 221 are fastened while further realizing the installation and positioning between the main cover 21 and the first cavity 11, as well as between the pressure plate 22 and the second cavity 12, and play the role of a positioning member. In addition, it can also As a redundant structure of the first abutting piece 132 and the second abutting piece 232, the stability and accuracy of installation and positioning are improved.

In addition, the side wall of the trunking 123 is provided with a limiting protrusion 15 that protrudes along the direction of the second opening 121, and the side wall of the extension plate 222 is provided with a limiting groove 25 that is arranged laterally to the opening. The limiting groove 25 Separated from the second connecting piece 24 on both sides of the pressure plate 22, it is suitable for the limiting groove 25 to accommodate the limiting protrusion 15 and abut against the limiting protrusion 15 when the second connecting piece 24 moves to the installation position set up.

The setting of the limit protrusion 15 and the limit groove 25 also ensures the tightness of the connection between the wire groove 123 and the extension plate 222, and further realizes that the main cover 21 and the first cavity 11 and the pressure plate 22 are connected to the second cavity. The installation and positioning between the two cavities 12 plays the role of a positioning part. In addition, it can also be used as a redundant component of the first abutting part 132 and the second abutting part 232 and the second connecting part 24 and the first connecting part 14. The remaining structure improves the stability and accuracy of installation and positioning.

As a changeable embodiment, only one of the three groups of the limiting protrusion 15 and the limiting groove 25, the first abutting piece 132 and the second abutting piece 232, the second connecting piece 24 and the first connecting piece 14 can be selected. One or two settings.

The present application also provides an air outlet device, specifically a cooling fan, which may also be a desk fan, a floor fan, a blower, etc., including: an air passage, a driving part, and the above-mentioned motor protection structure.

The air passage is cylindrical and has a built-in accommodating cavity. The two ends of the air passage are also provided with an air inlet 3 and an air outlet 4 arranged in a grid structure. In addition, a wet curtain 7 is arranged on the side of the air inlet 3 . The driving part includes a motor 5 and a fan blade 6 arranged on the output shaft of the motor 5; the above-mentioned motor protection structure is arranged in the housing cavity, the motor 5 is arranged in the first cavity 11, and the guide surface 211 faces the direction of the air inlet 3 set up. The deflector surface 211 arranged in this way can make the air flow slide along the arc surface, reduce the wind resistance of the windward side of the air outlet device, thereby reduce the loss of kinetic energy of the air, increase the air output of the air outlet device, and is simple and easy to operate with low cost.

The seat body 1 also includes an outer ring 16 and several supporting pieces 17 . The outer ring 16 is sleeved on the outside of the first cavity 11, the outer ring is arranged concentrically with the first cavity 11, and its outer wall is connected with the inner wall of the air passage; the support member 17 can connect the outer wall of the first cavity 11 with the The inner wall of the outer ring 16 .

In this embodiment, the second cavity 12 on the seat body 1 is respectively connected to the first cavity 11 and the outer ring 16, and the outer ring 16 is also provided with a wire hole communicating with the second cavity 12, so that the wire Pass through the outer ring 16 and connect with the power supply circuit.

In addition, the support member 17 is arranged in an arc shape, the second cavity 12 and the support member 17 follow the shape, and the second cavity 12 and several support members 17 are evenly distributed between the first cavity 11 and the outer ring member 16 . The profiling and uniform distribution of the second cavity 12 and the support member 17 make the combined structure of the second cavity 12 and the wire pressing plate 22 seal and transport the motor wire 51 and at the same time reinforce the first cavity 11 and the outer ring 16 to stabilize the connection, and effectively balance the connection strength at each position between the first cavity 11 and the outer ring 16 . As an alternative embodiment, each support member 17 is evenly distributed, and the second cavity 12 is arranged independently from the arrangement of the support members 17 .

Claims

A motor protection structure, characterized in that it comprises:

The seat (1), including a first cavity (11), the first cavity (11) is suitable for accommodating the motor (5), and the first cavity (11) is away from the output shaft of the motor (5) One end of is provided with a first opening (111);

The cover body (2) includes a main cover (21), the main cover (21) is sealingly connected with the first opening (111), and is suitable for covering the first opening (111), and the main cover (21 ) is provided with a guide surface (211) on the side away from the first opening (111), and the guide surface (211) is arc-shaped, suitable for dispersing and guiding the flow towards the main cover (21) airflow.
The motor protection structure according to claim 1, characterized in that,

The seat (1) also includes a second cavity (12), the second cavity (12) is arranged along the circumference of the first opening (111), and the second cavity (12) is A second opening (121) is provided, the second cavity (12) communicates with the first cavity (11), and is suitable for accommodating motor wires (51);

The cover body (2) also includes a pressure plate (22), the pressure plate (22) is connected to the main cover (21), and is detachably connected to the second opening (121) in a sealed manner, It is suitable for covering the second opening (121).
The motor protection structure according to claim 2, characterized in that, the second opening (121) is arranged in the same direction as the first opening (111).
The motor protection structure according to claim 2 or 3, characterized in that, the pressure plate (22) and the main cover (21) are integrally formed.
The motor protection structure according to claim 4, characterized in that,

A number of first stoppers (13) are distributed circumferentially along the inner wall of the first cavity (11), and a number of first stoppers (13) are arranged on the side of the main cover (21) facing the first cavity (11). Two limiting parts (23), the first limiting part (13) and the second limiting part (23) are detachably engaged and connected.
The motor protection structure according to claim 5, characterized in that,

The first stopper (13) protrudes along the inner wall of the first cavity (11), and includes a first barb (131) and a first abutment (132). The first barb (131) extends in the circumferential direction, and the first abutting member (132) is away from the first barb member (131) and extends in the axial direction;

The second limiting member (23) includes a second barb member (231) and a second abutment member (232), the second barb member (231) is arranged along the circumferential direction, and the second abutment member The part (232) is away from the second barb part (231) and extends in the axial direction, and the second barb part (231) has the function of extending into the first cavity (11) under the action of external force, And rotate along the first rotation direction to the limiting state of engaging and connecting with the first barb member (131).
The motor protection structure according to claim 6, characterized in that,

The second cavity (12) includes a main cavity (122) and a wire slot (123), the main cavity (122) is adjacent to and communicated with the first cavity (11), and the wire slot (123) is connected to the main cavity (122), and extends in a direction away from the first cavity (11);

The pressure plate (22) includes a main board (221) and an extension board (222), the extension board (222) is connected to the main board (221) and extends in a direction away from the main cover (21), The main board (221) is in corresponding sealing connection with the main cavity (122), and the extension plate (222) is in corresponding sealing connection with the wire groove (123).
The motor protection structure according to claim 7, characterized in that,

The outer wall of the main cavity (122) is provided with a first connecting piece (14), and the outer edge of the main board (221) is provided with a second connecting piece (24). , the second connecting piece (24) has the ability to rotate along the first rotation direction under the action of an external force, and move to the installation position abutting against the outer wall of the main cavity (122), when in the installation position , the second connecting member (24) is detachably connected to the first connecting member (14).
The motor protection structure according to claim 7 or 8, characterized in that,

A limit protrusion (15) protruding along the direction of the second opening (121) is provided on the side wall of the trunking (123), and an opening side wall is provided on the side wall of the extension plate (222). The limit groove (25) arranged in the direction, the limit groove (25) and the second connecting piece (24) are respectively arranged on both sides of the described pressure plate (22), suitable for the second connecting piece ( 24) When moving to the installation position, the limiting groove (25) accommodates the limiting protrusion (15), and is set in abutment with the limiting protrusion (15).
The motor protection structure according to claim 1, characterized in that,

One end of the first cavity (11) facing the output shaft of the motor (5) is also provided with a motor shaft hole (112) and a number of cooling holes (113), and the motor shaft hole (112) is arranged on the The middle side of the end of the first cavity (11) is suitable for the output shaft of the motor (5) to pass through, and several heat dissipation holes (113) are distributed along the circumference of the motor shaft hole (112).
An air outlet device, characterized in that it comprises:

The air passage has a built-in accommodation cavity, and the air inlet (3) and air outlet (4) are also arranged on the air passage;

A drive member, including a motor (5) and a fan blade (6) arranged on the output shaft of the motor (5);

The motor protection structure according to any one of claims 1-10, the motor protection structure is arranged in the accommodating cavity, the motor (5) is arranged in the first cavity (11), and the guide The flow surface (211) is arranged towards the direction of the air inlet (3).
The air outlet device according to claim 11, characterized in that, the base (1) further comprises:

An outer ring (16), the outer ring (16) is sleeved on the outside of the first cavity (11), and the outer ring (16) is arranged concentrically with the first cavity (11) , and connected with the inner wall of the air passage;

Several supporting pieces (17) connect the outer wall of the first cavity (11) and the inner wall of the outer ring (16).
The air outlet device according to claim 12, characterized in that, the second cavity (12) on the base (1) connects the first cavity (11) and the outer ring (16) respectively ), the outer ring (16) is also provided with a wire hole communicating with the second cavity (12).
The air outlet device according to claim 13, characterized in that, the second cavity (12) is profiled with the support (17), and the second cavity (12) and several of the supports The parts (17) are evenly distributed between the first cavity (11) and the outer ring part (16).
The air outlet device according to any one of claims 11-14, characterized in that the air outlet device is a cooling fan.