CN216897517U

CN216897517U - Fan fixing structure and air conditioner indoor unit

Info

Publication number: CN216897517U
Application number: CN202220028191.2U
Authority: CN
Inventors: 叶杨凡
Original assignee: TCL Air Conditioner Zhongshan Co Ltd
Current assignee: TCL Air Conditioner Zhongshan Co Ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-07-05
Anticipated expiration: 2032-01-05

Abstract

The embodiment of the application provides a fan fixed knot constructs, includes: the connecting shaft sleeve is provided with a fastening hole penetrating through the inner peripheral surface and the outer peripheral surface of the connecting shaft sleeve; the driving shaft penetrates through the inner periphery of the connecting shaft sleeve, and a positioning plane is arranged on the outer periphery of the driving shaft; and the fastening piece is fixedly connected with the fastening hole, and one end of the fastening piece penetrates through the fastening hole and then is tightly propped against the positioning plane.

Description

Fan fixing structure and air conditioner indoor unit

Technical Field

The application relates to the technical field of air conditioners, in particular to a fan fixing structure and an air conditioner indoor unit.

Background

An air conditioner, that is, an air conditioner, is a device that can adjust and control parameters such as temperature, humidity, and flow rate of ambient air in a building or structure. The split air conditioner comprises an indoor air conditioner and an outdoor air conditioner, wherein a driving motor of the indoor air conditioner drives a fan to rotate, and the fan blows wind to a corresponding indoor position. In the related art, the air-conditioning indoor unit has the problem that the fixing of a fan and a driving motor is unreliable, so that the use reliability of the air-conditioning indoor unit is reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a fan fixed knot constructs and machine in air conditioning, can increase fan and driving motor's connection reliability to improve the use reliability of machine in the air conditioning.

In one aspect, an embodiment of the present application provides a fan fixing structure, including: the connecting shaft sleeve is provided with a fastening hole penetrating through the inner peripheral surface and the outer peripheral surface of the connecting shaft sleeve; the driving shaft penetrates through the inner periphery of the connecting shaft sleeve, and a positioning plane is arranged on the outer periphery of the driving shaft; and the fastening piece is fixedly connected with the fastening hole, and one end of the fastening piece penetrates through the fastening hole and then is tightly propped against the positioning plane.

In some embodiments, the drive shaft is provided with a plurality of the positioning planes, which are uniformly arranged in a circumferential direction of the drive shaft.

In some embodiments, the connecting shaft sleeve is provided with a plurality of fastening holes, and each positioning plane and at least one fastening hole are arranged correspondingly.

In some embodiments, the fastening holes are threaded holes or pin holes and the fasteners are threaded connectors or pin connectors.

In some embodiments, a positioning groove is provided on an end surface of the connecting sleeve, and a positioning protrusion is provided on an outer circumferential side of the driving shaft, and the positioning protrusion may be inserted into or separated from the positioning groove in an axial direction of the driving shaft.

In some embodiments, the positioning boss and the positioning flat are disposed to be offset on the outer peripheral side of the drive shaft.

In some embodiments, a plurality of positioning grooves are formed on an end surface of the connecting sleeve, a plurality of positioning protrusions are formed on an outer circumferential side of the driving shaft, and the plurality of positioning grooves and the plurality of positioning protrusions are equal in number and are arranged in one-to-one correspondence.

In some embodiments, the plurality of positioning protrusions are uniformly arranged in a circumferential direction of the drive shaft.

In some embodiments, the connecting sleeve includes a body sleeve portion and a flange portion disposed on the body sleeve portion, the flange portion being disposed in a region between two end surfaces of the body sleeve portion.

On the other hand, the embodiment of the application provides an indoor unit of an air conditioner, including a fan and the fan fixing structure of any one of the above embodiments, the fan is connected and fixed with the driving shaft through the connecting shaft sleeve.

According to the embodiment of the application, the fastening hole is formed in the connecting shaft sleeve, the positioning plane is formed in the outer peripheral surface of the driving shaft, the fastening piece is fastened and connected with the fastening hole, and one end of the fastening piece penetrates through the fastening hole and then is tightly pressed against the positioning plane; therefore, the tail end of the fastener can be in surface type positioning connection with the positioning plane, when the motor shaft rotates, the tail end of the fastener and the positioning plane cannot slip and loosen, reliable circumferential spacing can be kept between the driving shaft and the connecting shaft sleeve, relative rotation cannot occur, the rotating motion output by the driving shaft can be reliably transmitted to the fan through the connecting shaft sleeve, the connection reliability of the fan and the driving motor can be improved, and the use reliability of the indoor unit of the air conditioner is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a first assembled block diagram of a fan mounting structure provided in some embodiments of the present application;

FIG. 2 is a first exploded view of a fan mounting structure provided in some embodiments of the present application;

FIG. 3 is a second assembled block diagram of a fan mounting structure provided in some embodiments of the present application;

FIG. 4 is a second exploded view of a fan mounting structure provided in some embodiments of the present application;

fig. 5 is a front view structural diagram of an air conditioning indoor unit according to some embodiments of the present application.

Description of the main element symbols:

1-air-conditioning indoor unit, 101-fan fixing structure, 10-connecting shaft sleeve, 10 a-fastening hole, 10 b-positioning groove, 11-body sleeve part, 12-flange part, 20-driving shaft, 21-positioning plane, 22-positioning bulge part, 30-fastening piece and 102-fan.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, 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", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

"A and/or B" includes the following three combinations: a alone, B alone, and a combination of A and B.

The use of "adapted to" or "configured to" in this application means open and inclusive language that does not exclude devices adapted to or configured to perform additional tasks or steps. Additionally, the use of "based on" means open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values may in practice be based on additional conditions or values beyond those stated.

In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes are not set forth in detail in order to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

In the related art, the fan is connected to a motor shaft of the driving motor through a bushing. The shaft sleeve is sleeved on the outer peripheral surface of the motor shaft, and the shaft sleeve and the outer peripheral surface of the motor shaft are fastened through screws. Since the outer circumferential surface of the motor shaft is a circumferential surface, when the screw is fastened to the outer circumferential surface of the motor shaft, the screw and the outer circumferential surface of the motor shaft are positioned at a low reliability point, and it is difficult to reliably position the motor shaft and the sleeve in the circumferential direction. In daily use of the indoor unit of the air conditioner, when a motor shaft rotates, a screw is easy to slip and loosen on the outer peripheral surface of the motor shaft, so that the motor shaft and a shaft sleeve rotate relatively, transmission reliability is reduced, and operation faults are easy to occur.

The embodiment of the application provides a fan fixing structure 101, and the fan fixing structure 101 comprises a connecting shaft sleeve 10, a driving shaft 20 and a fastening piece 30, so that the connection reliability of a fan 102 and a driving motor can be increased, and the use reliability of an air-conditioning indoor unit 1 can be improved.

The coupling sleeve 10 is coupled to the shaft end of the fan 102. The coupling boss 10 may have a ring-shaped configuration to form inner and outer circumferential surfaces, and is provided with fastening holes 10a penetrating the inner and outer circumferential surfaces thereof. The driving shaft 20 can be inserted into the inner circumference of the connecting shaft sleeve 10 to form a shaft hole fit; here, the type of the driving shaft 20 may be determined according to the type of the driving element, and a motor shaft, a hydraulic motor output shaft, and the like may be used, which is not limited in the embodiment of the present application. The outer peripheral side of the drive shaft 20 is provided with a positioning flat 21 so that the positioning flat 21 and the inner peripheral surface of the coupling sleeve 10 are held in opposition; as the name suggests, the positioning plane 21 is a flat plane structure different from a circumferential surface and other curved surfaces. The fastening member 30 is fastened to the fastening hole 10a, and one end of the fastening member 30 is inserted through the fastening hole 10a and then pressed against the positioning plane 21.

In this way, the end of the fastening member 30 can be in surface-type positioning connection with the positioning plane 21, and when the motor shaft rotates, the end of the fastening member 30 and the positioning plane 21 will not slip and loosen, so that the driving shaft 20 and the connecting shaft sleeve 10 can be kept in reliable circumferential spacing and will not rotate relatively, and the rotation motion output by the driving shaft 20 can be reliably transmitted to the fan 102 through the connecting shaft sleeve 10, so that the connection reliability of the fan 102 and the driving motor can be increased, and the use reliability of the air-conditioning indoor unit 1 can be improved.

The number of the fastening holes 10a and the number of the positioning planes 21 may be determined according to actual needs, and may be one or more, which is not limited in the embodiment of the present application. In some embodiments, the drive shaft 20 may be provided with a plurality of locating flats 21. The arrangement of the plurality of positioning planes 21 may be determined according to actual needs, and the embodiment of the present application is not limited thereto. In some examples, the plurality of locating planes 21 may be uniformly arranged along the circumferential direction of the drive shaft 20. Thus, the drive shaft 20 can have a uniform and balanced self-structure, ensuring structural reliability of the drive shaft 20.

In some examples, the coupling boss 10 may be provided with a plurality of fastening holes 10a, and each of the positioning planes 21 and at least one of the fastening holes 10a are correspondingly provided. Accordingly, the fastening member 30 may be plural, and each fastening member 30 is inserted through one fastening hole 10a and then is pressed against the positioning plane 21. In this way, the connecting sleeve 10 and the driving shaft 20 can be circumferentially positioned and connected at a plurality of positions by the plurality of fasteners 30 and the plurality of positioning planes 21 to reliably restrain the freedom of circumferential rotation of the connecting sleeve 10 and the driving shaft 20, and the connection reliability of the fan 102 and the driving motor is increased. Meanwhile, the jacking force applied to the driving shaft 20 through the plurality of positioning planes 21 is relatively balanced, and lateral bending damage caused by lateral bending moment due to offset of the jacking force is avoided.

The types of the fastening holes 10a and the fastening members 30 may be determined according to actual needs, and the embodiment of the present invention is not limited thereto. In some embodiments, the fastening hole 10a may be a threaded hole, and the fastener 30 may be a threaded connector such as a bolt, set screw, or the like. In other embodiments, fastening hole 10a may be a pin hole and fastener 30 may be a pin connector.

As described above, in the related art, the outer circumferential surface of the motor shaft belongs to the circumferential surface. When the screw is fastened to the outer peripheral surface of the motor shaft, the screw and the outer peripheral surface of the motor shaft are positioned at a point with low reliability, and reliable and accurate circumferential positioning between the motor shaft and the shaft sleeve is difficult. Correspondingly, auxiliary positioning needs to be carried out by means of a positioning tool during assembly, so that the operation is inconvenient and the assembly efficiency is influenced; and when later maintenance, if do not have location frock supplementary, lead to easily that the location is inaccurate, installation aversion.

In some embodiments, the end surface of the coupling sleeve 10 may be provided with a positioning recess 10b, and the outer circumferential side of the driving shaft 20 may be provided with a positioning protrusion 22, and the positioning protrusion 22 may be inserted into the positioning recess 10b or separated from the positioning recess 10b in the axial direction of the driving shaft 20.

When the fan 102 and the drive shaft 20 are assembled, the drive shaft 20 is inserted through the inner peripheral side of the coupling boss 10 connected to the shaft end of the fan 102 in the axial direction thereof, and the positioning boss 22 is fitted into the positioning recess 10 b. Due to the circumferential limiting effect of the positioning groove 10b on the positioning convex portion 22, the circumferential rotation freedom degree between the connecting shaft sleeve 10 and the driving shaft 20 can be restrained through the connection cooperation of the positioning groove 10b and the positioning convex portion 22, so that the connecting shaft sleeve 10 and the driving shaft 20 do not circumferentially rotate relatively any more, and the circumferential positioning between the connecting shaft sleeve 10 and the driving shaft 20 is realized. Further, the fastening member 30 is fastened to the fastening hole 10a, and one end of the fastening member 30 is inserted into the fastening hole 10a and then pressed against the positioning plane 21, thereby locking the relative position between the coupling sleeve 10 and the driving shaft 20. Compared with the prior art, the fan fixing structure 101 provided by the embodiment of the application can realize primary circumferential positioning only by self structures of the connecting shaft sleeve 10 and the driving shaft 20 without a positioning tool, and is convenient to assemble and operate and high in assembling efficiency; and when later maintenance, can break away from the reliance to the location frock, maintainer can reliably install connecting shaft sleeve 10 and drive shaft 20 conveniently.

In some examples, the positioning boss 22 and the positioning flat 21 may be disposed to be staggered on the outer circumferential side of the drive shaft 20. Thus, the positioning boss 22 and the positioning flat surface 21 can be made to function at different positions, avoiding the occurrence of positional interference.

The number of the positioning grooves 10b and the positioning protrusions 22 may be determined according to actual needs, and the embodiment of the present application is not limited thereto. In some examples, the end surface of the coupling sleeve 10 may be provided with a plurality of positioning recesses 10b, and the outer circumferential side of the drive shaft 20 may be provided with a plurality of positioning protrusions 22. Here, the plurality of positioning grooves 10b and the plurality of positioning bosses 22 may be provided in equal numbers and in one-to-one correspondence. In this way, the coupling sleeve 10 and the drive shaft 20 can be circumferentially positioned at a plurality of positions by the plurality of positioning grooves 10b and the plurality of positioning bosses 22, and the positioning reliability and the positioning convenience of the coupling sleeve 10 and the drive shaft 20 are increased.

The arrangement of the positioning protrusions 22 may be determined according to actual needs, and the embodiment of the present application is not limited thereto. For example, the plurality of positioning protrusions 22 may be uniformly arranged in the circumferential direction of the drive shaft 20. Therefore, the driving shaft 20 can have a uniform and balanced self structure, the circumferential positioning force of the driving shaft 20 is relatively balanced through the plurality of convex parts, and the structural safety of the driving shaft 20 is ensured.

The structural form of the connecting shaft sleeve 10 can be determined according to actual needs, and the embodiment of the present application is not limited thereto. In some embodiments, the connecting sleeve 10 may include a body sleeve portion 11 and a flange portion 12 disposed on the body sleeve portion 11, the flange portion 12 being disposed in a region between two end surfaces of the body sleeve portion 11. Here, the fastening hole 10a may be provided on the body housing part 11 and penetrate the inner and outer circumferential surfaces of the body housing part 11, and the positioning groove 10b may be provided on one end surface of the body housing part 11. The connecting sleeve 10 can axially limit the axial end of the fan 102 through the flange portion 12, so that the connecting sleeve 10 and the fan 102 can be reliably positioned and connected in the axial direction of the connecting sleeve 10.

On the other hand, the embodiment of the present application provides an air conditioning indoor unit 1, where the air conditioning indoor unit 1 includes a fan 102 and the fan fixing structure 101 provided in any of the above embodiments, and the fan 102 is fixedly connected to the driving shaft 20 through the connecting bushing 10. Here, the type of the air-conditioning indoor unit 1 may be determined according to the type of the air-conditioner, and the present embodiment is not limited thereto, and the present invention may be applied to a structure type such as an indoor unit of a wall-mounted air-conditioner, an indoor unit of a cabinet air-conditioner, and the like. The type of the fan 102 may be determined according to actual needs, and may be, for example, a cross-flow fan 102, a centrifugal fan 102, or the like, which is not limited in the embodiments of the present application. The air-conditioning indoor unit 1 provided by the embodiment of the application has the fan fixing structure 101, so that the connection reliability of the fan 102 and the driving motor can be improved, and the use reliability is higher.

The above-mentioned detailed descriptions of the fan fixing structure and the air-conditioning indoor unit provided in the embodiments of the present application apply specific examples to explain the principle and the embodiments of the present application, and the descriptions of the above-mentioned embodiments are only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A fan fixing structure, comprising:

the connecting shaft sleeve is provided with a fastening hole penetrating through the inner peripheral surface and the outer peripheral surface of the connecting shaft sleeve;

the driving shaft penetrates through the inner periphery of the connecting shaft sleeve, and a positioning plane is arranged on the outer periphery of the driving shaft;

and the fastening piece is fixedly connected with the fastening hole, and one end of the fastening piece penetrates through the fastening hole and then is tightly propped against the positioning plane.

2. The fan fixing structure according to claim 1, wherein the driving shaft is provided with a plurality of the positioning planes, which are uniformly arranged in a circumferential direction of the driving shaft.

3. The fan fixing structure as claimed in claim 2, wherein the coupling boss is provided with a plurality of the fastening holes, and each of the positioning planes is provided corresponding to at least one of the fastening holes.

4. The fan fixing structure as claimed in claim 1, wherein the fastening hole is a threaded hole or a pin hole, and the fastening member is a screw connector or a pin connector.

5. The fan fixing structure according to claim 1, wherein a positioning recess is provided on an end surface of the coupling boss, and a positioning protrusion is provided on an outer peripheral side of the drive shaft, the positioning protrusion being capable of being fitted into or removed from the positioning recess in an axial direction of the drive shaft.

6. The fan fixing structure according to claim 5, wherein the positioning boss and the positioning flat are disposed to be shifted on an outer peripheral side of the drive shaft.

7. The fan fixing structure according to claim 5, wherein a plurality of positioning recesses are provided on an end surface of the coupling boss, a plurality of positioning protrusions are provided on an outer peripheral side of the driving shaft, and the plurality of positioning recesses and the plurality of positioning protrusions are provided in equal number and in one-to-one correspondence.

8. The fan fixing structure according to claim 7, wherein the plurality of positioning bosses are evenly provided in a circumferential direction of the drive shaft.

9. The fan fixing structure as claimed in claim 1, wherein the coupling boss includes a body boss portion and a flange portion provided on the body boss portion, the flange portion being provided in a region between both end surfaces of the body boss portion.

10. An indoor unit of an air conditioner, comprising a fan and the fan fixing structure of any one of claims 1 to 9, wherein the fan is fixedly coupled to the driving shaft by the coupling boss.