Cross-flow fan blade assembly and air conditioner

Abstract

The utility model discloses a cross-flow fan blade assembly and an air conditioner, and belongs to the technical field of automatic machinery. The cross-flow fan blade assembly comprises a motor and a cross-flow fan blade, and a mounting shaft sleeve matched with a driving shaft of the motor is arranged at one end of the cross-flow fan blade. A clamping groove is formed in the peripheral face of the driving shaft, the installation shaft sleeve is formed in an injection molding mode, and an elastic buckle clamped with the clamping groove is formed on the inner wall of a shaft hole of the installation shaft sleeve in an injection molding mode. When the cross-flow fan blade assembly provided by the utility model is assembled and the driving shaft just penetrates into the shaft hole of the mounting shaft sleeve, the elastic buckle is pressed to retract; when the clamping groove in the driving shaft is aligned with the elastic buckle, the elastic buckle resets and is clamped with the clamping groove, so that the assembly convenience is realized, the connection stability can be ensured, the cross-flow fan blade is fixed without a screw, and the installation between the motor and the cross-flow fan blade is optimized.

Description

Technical Field

[0001] This utility model belongs to the field of automated machinery technology, specifically relating to a cross-flow fan blade assembly and an air conditioner using the cross-flow fan blade assembly. Background Technology

[0002] In existing technologies, air conditioning indoor units use a motor to drive cross-flow fan blades to deliver air into the room. Therefore, the secure connection between the cross-flow fan blades and the motor is particularly important.

[0003] See Figure 1 and Figure 2 As shown, taking an indoor wall-mounted air conditioner as an example, the current method of fastening the cross-flow fan blades and the motor is as follows: the drive shaft 11 of the motor 10 is inserted into the central bushing 21 of the cross-flow fan blade 20, the screw holes on the bushing 21 are aligned with the screw holes on the drive shaft 11, and then the screw 90 is inserted from the side blade gap and locked with the corresponding screw hole, thereby connecting the cross-flow fan blades and the motor drive.

[0004] However, the existing technology has obvious problems with the way the cross-flow fan blade 20 is fixed to the motor 10: it requires using tools to tighten screws through the narrow gap between the blades, which is difficult to operate and has low assembly efficiency. Utility Model Content

[0005] The present invention aims to provide a cross-flow fan blade assembly and an air conditioner, with the purpose of improving assembly efficiency and stability.

[0006] A first aspect of this utility model provides a cross-flow fan blade assembly, comprising: a motor and a cross-flow fan blade, wherein one end of the cross-flow fan blade is provided with a mounting sleeve that cooperates with the drive shaft of the motor; characterized in that: a snap-fit ​​groove is formed on the outer circumferential surface of the drive shaft, the mounting sleeve is injection molded, and an elastic buckle that engages with the snap-fit ​​groove is injection molded on the inner wall of the shaft hole of the mounting sleeve.

[0007] The cross-flow fan assembly provided by the above technical solution features a snap-fit ​​groove on the motor drive shaft and an elastic buckle on the mounting sleeve of the cross-flow fan. During assembly, when the drive shaft just enters the shaft hole of the mounting sleeve, the elastic buckle is compressed and retracts. When the snap-fit ​​groove on the drive shaft aligns with the elastic buckle, the elastic buckle resets and engages with the snap-fit ​​groove. At this point, the assembly between the motor drive shaft and the cross-flow fan is completed. As long as the engagement force between the elastic buckle and the snap-fit ​​groove is maintained, the cross-flow fan will only rotate with the rotation of the drive shaft. The cross-flow fan assembly provided by this utility model achieves convenient assembly while ensuring connection stability, thereby realizing screwless fixing of the cross-flow fan and optimizing the installation between the motor and the cross-flow fan.

[0008] As a preferred technical solution, the snap-fit ​​groove is a circumferentially continuous annular groove, the elastic buckle is a circumferentially continuous annular flange, and the groove wall of the annular groove and the outer wall of the annular flange are provided with anti-slip textures to prevent relative rotation between them.

[0009] The advantages of the above-mentioned preferred solution are as follows: the snap-fit ​​groove can be formed by one-time grooving, and the annular flange is formed by injection molding, which is convenient for processing; in addition, the anti-slip texture can further enhance the snap-fit ​​force between the elastic buckle and the snap-fit ​​groove.

[0010] As a preferred technical solution, the cross-sections of the radial and axial surfaces of the annular groove and the annular flange are isosceles triangles.

[0011] The advantages of the above preferred solution are that the annular flange with an isosceles triangular cross section is structurally stable and not easily damaged when elastic deformation occurs, and its waist can form a gradual guiding effect when the drive shaft passes through the shaft hole of the mounting bushing.

[0012] As a preferred technical solution, the snap-fit ​​groove is a plurality of snap-fit ​​grooves that are discretely distributed at equal angular intervals in the circumferential direction, and the elastic buckle is a plurality of protrusions that are discretely distributed at equal angular intervals in the circumferential direction, the number and spacing of the plurality of protrusions corresponding to the plurality of snap-fit ​​grooves.

[0013] The advantages of the above preferred solution are: although the process of opening multiple slots on the drive shaft is slightly complicated, the slots and protrusions in this way can be set to be smaller and shallower, and the overall clamping force is sufficient after multiple protrusions are inserted into multiple slots.

[0014] As a preferred technical solution, the cross-flow fan assembly further includes a support base, and the other end of the cross-flow fan is provided with a support shaft that cooperates with the support base.

[0015] The advantages of the above-mentioned preferred solution are: by setting a dedicated support base, the other end of the cross-flow fan blade can be stably supported, and the motor, cross-flow fan blade and support base can be installed in the relevant equipment as a whole component in a modular way, avoiding the need to process the support mechanism of the other end of the cross-flow fan blade on the housing of the equipment.

[0016] As a preferred technical solution, the support base includes a base body and a support bushing disposed on the base body, wherein the support shaft is fitted into the shaft hole of the support bushing.

[0017] The advantages of the above preferred solution are that the base can be designed as a standard part for easy installation, and the support bushing is easy to maintain, adjust or replace.

[0018] A second aspect of this utility model provides an air conditioner, including a housing and a cross-flow fan assembly disposed within the housing; characterized in that: the cross-flow fan assembly is the cross-flow fan assembly described above.

[0019] The air conditioner provided by the above technical solution uses the cross-flow fan blade assembly described above, which can ensure the stability of the connection while achieving convenient assembly, thereby realizing screwless fixing of the cross-flow fan blade and improving the installation efficiency of the entire air conditioner.

[0020] As a preferred technical solution, the housing is provided with a motor mounting slot, a cross-flow fan blade receiving slot, and a support base mounting slot; the motor is embedded in the motor mounting slot, the cross-flow fan blade is rotatably received in the cross-flow fan blade receiving slot, and the support base is embedded in the support base mounting slot.

[0021] In the above preferred embodiment, by setting motor mounting slots and support mounting slots, the motor and support in the cross-flow fan assembly can be quickly installed in an embedded manner, avoiding the cumbersome operation of screw installation in the prior art. Attached Figure Description

[0022] Figure 1 This is a structural diagram of an existing cross-flow fan assembly used in an air conditioner.

[0023] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0024] Figure 3 An exploded view of the cross-flow fan assembly provided for a specific embodiment of this utility model.

[0025] Figure 4 A detailed structural diagram of the inner side of the mounting bushing in the cross-flow fan assembly provided for a specific embodiment of this utility model.

[0026] Figure 5 A cross-sectional view of the cross-flow fan assembly provided for a specific embodiment of this utility model.

[0027] Figure 6 for Figure 5 Enlarged view of section B.

[0028] Figure 7 The cross-flow fan assembly provided for a specific embodiment of this utility model includes a front view of the support base.

[0029] Figure 8 An exploded view of the cross-flow fan blade assembly provided for a specific embodiment of this utility model before the other end of the cross-flow fan blade is fitted with the support base.

[0030] Figure 9A perspective view of an air conditioner provided for a specific embodiment of this utility model.

[0031] Figure 10 This is a structural diagram of the internal casing of an air conditioner before the cross-flow fan assembly is installed, provided for a specific embodiment of this utility model.

[0032] Figure 11 This is a structural diagram of the internal casing of an air conditioner after it has been equipped with a cross-flow fan blade assembly, which is a specific embodiment of this utility model.

[0033] Explanation of reference numerals: 10-Motor, 20-Cross-flow fan blade, 21-Mounting bushing, 211-Shaft hole, 111-Snap-fit ​​groove, 212-Elastic buckle, 30-Support base, 25-Support shaft, 31-Base body, 32-Support bushing, 50-Housing housing, 51-Motor mounting slot, 52-Cross-flow fan blade receiving slot, 53-Support base mounting slot. Detailed Implementation

[0034] The technical solutions of the present utility model embodiments will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. In the description of the present utility model, it should 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", "front", "back", etc., indicating the orientation or positional relationship, are all based on the orientation or relative positional relationship shown in the accompanying drawings. They are intended to facilitate a clear description of the structure of the product or device and are not used to limit the actual orientation of the product or device during production, use, sales, etc.

[0035] Furthermore, the terms "first" and "second" are used only for distinguishing purposes in the description and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0036] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Under the premise that the specific embodiments do not conflict with each other, the technical features of the various specific embodiments can be used interchangeably.

[0037] Combination Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the cross-flow fan assembly provided in this embodiment includes a motor 10 and a cross-flow fan blade 20. One end of the cross-flow fan blade is provided with a mounting sleeve 21, which has a shaft hole 211 that mates with the drive shaft 11 of the motor 10. A snap-fit ​​groove 111 is formed on the outer circumferential surface of the drive shaft 11 at a predetermined axial position. The mounting sleeve 21 or the entire cross-flow fan blade 20 is injection molded. During injection molding, the inner wall of the shaft hole 211 of the mounting sleeve 21 is formed with an elastic buckle 212 that engages with the snap-fit ​​groove 111.

[0038] During assembly, when the drive shaft 11 just enters the shaft hole 211 of the mounting sleeve 21, the elastic buckle 212 is compressed and retracts; when the locking groove 111 on the drive shaft 11 aligns with the elastic buckle 212, the elastic buckle 212 resets and engages with the locking groove 111; at this time, the drive shaft 11 of the motor 10 and the mounting sleeve 21 of the cross-flow fan 20 are assembled, and the locking force between the elastic buckle 212 and the locking groove 111 can ensure that the cross-flow fan 20 will only rotate with the rotation of the drive shaft 11, and the two will not have axial movement or relative rotation.

[0039] As can be seen from the above, the cross-flow fan blade assembly provided in this embodiment can ensure the stability of the connection while achieving convenient assembly, thereby realizing screwless fixing of the cross-flow fan blade and optimizing the installation between the motor 10 and the cross-flow fan blade 20.

[0040] See Figure 3 , Figure 5 and Figure 6 As shown, the snap-fit ​​groove 111 is a circumferentially continuous annular groove, while the elastic buckle 212 is a circumferentially continuous annular flange. Thus, the snap-fit ​​groove can be formed in a single grooving process, and the annular flange is easy to injection mold, facilitating processing. Furthermore, anti-slip textures are provided on the groove walls of the annular groove and the outer wall of the annular flange to prevent relative rotation between them, further enhancing the snap-fit ​​force between the elastic buckle 212 and the snap-fit ​​groove 111.

[0041] In one specific implementation, the cross-sections of the radial and axial surfaces of the annular groove and the annular flange are isosceles triangles. This makes the annular flange more stable and less prone to damage when it undergoes elastic deformation under the pressure of the drive shaft 11. Furthermore, the sides of the isosceles triangle provide a gradual guide when the drive shaft 11 passes through the shaft hole 211 of the mounting bushing 21.

[0042] As an alternative implementation, the snap-fit ​​grooves are multiple grooves discretely distributed at equal angular intervals around the circumference, and the elastic buckles are multiple protrusions discretely distributed at equal angular intervals around the circumference. The number and spacing of the multiple protrusions correspond to the multiple grooves. Although the process of opening multiple grooves on the drive shaft is slightly more complicated in this implementation, the grooves and protrusions can be made smaller and shallower, and the overall snap-fit ​​force is sufficient after the multiple protrusions are engaged with the multiple grooves.

[0043] Combination Figure 7 and Figure 8 As shown, the cross-flow fan assembly provided in this embodiment also includes a support base 30, and a support shaft 25 is provided at the other end of the cross-flow fan 20. The support shaft 25 is rotatably supported on the support base 30. In this way, the other end of the cross-flow fan 20 can be stably supported, and the motor 10, the cross-flow fan 20 and the support base 30 can be installed in the relevant equipment (e.g., an air conditioner) as a complete assembly in a modular way, avoiding the need to specially process a support mechanism for supporting the other end of the cross-flow fan on the casing of the equipment (e.g., the air conditioner).

[0044] Specifically, the support base 30 includes a base body 31 and a support bushing 32 disposed on the base body 31, and a support shaft 25 disposed at the other end of the cross-flow fan blade 20 is fitted into the shaft hole of the support bushing 32. The base body 31 can be designed as a standard part to facilitate installation in equipment (such as an air conditioner), while the support bushing 32, as an independent component, facilitates maintenance, adjustment, or replacement.

[0045] Combination Figure 9 , Figure 10 and Figure 11 As shown, this embodiment also provides an air conditioner, which includes a housing 50 and a cross-flow fan assembly disposed within the housing 50; wherein the cross-flow fan assembly adopts the cross-flow fan assembly described above.

[0046] The housing 50 is provided with a motor mounting slot 51, a cross-flow fan blade receiving slot 52, and a support mounting slot 53. During assembly, the motor 10 of the cross-flow fan blade assembly is embedded in the motor mounting slot 51, the cross-flow fan blade 20 is rotatably received in the cross-flow fan blade receiving slot 52, and the support 30 is embedded in the support mounting slot 53.

[0047] The air conditioner provided by the above technical solution, by setting the motor mounting slot 51 and the support mounting slot 53, enables the motor 10 and the support 30 in the cross-flow fan assembly to be quickly installed by a snap-fit ​​method, avoiding the cumbersome operation of the screw installation method in the prior art.

[0048] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A cross-flow fan blade assembly, comprising: The motor and the cross-flow fan blade, wherein one end of the cross-flow fan blade is provided with a mounting sleeve that cooperates with the drive shaft of the motor; characterized in that: a snap-fit ​​groove is opened on the outer circumferential surface of the drive shaft, the mounting sleeve is injection molded, and the inner wall of the shaft hole of the mounting sleeve is injection molded with an elastic buckle that engages with the snap-fit ​​groove.

2. The cross-flow fan assembly according to claim 1, characterized in that, The snap-fit ​​groove is a circumferentially continuous annular groove, and the elastic buckle is a circumferentially continuous annular flange. The groove wall of the annular groove and the outer wall of the annular flange are provided with anti-slip textures to prevent relative rotation between them.

3. The cross-flow fan blade assembly according to claim 2, characterized in that, The cross-sections of the radial and axial surfaces of the annular groove and the annular flange are isosceles triangles.

4. The cross-flow fan blade assembly according to claim 1, characterized in that, The snap-fit ​​groove is a plurality of slots that are discretely distributed at equal angular intervals in the circumferential direction, and the elastic buckle is a plurality of protrusions that are discretely distributed at equal angular intervals in the circumferential direction. The number and spacing of the plurality of protrusions correspond to the plurality of slots.

5. The cross-flow fan assembly according to any one of claims 1-4, characterized in that, The cross-flow fan assembly also includes a support base, and the other end of the cross-flow fan is provided with a support shaft that cooperates with the support base.

6. The cross-flow fan assembly according to claim 5, characterized in that, The support base includes a base body and a support bushing disposed on the base body, wherein the support shaft is fitted into the shaft hole of the support bushing.

7. An air conditioner, comprising a casing and a cross-flow fan assembly disposed within the casing; characterized in that: The cross-flow fan blade assembly is the cross-flow fan blade assembly as described in claim 6.

8. The air conditioner according to claim 7, characterized in that, The housing is provided with a motor mounting slot, a cross-flow fan blade receiving slot, and a support base mounting slot; the motor is embedded in the motor mounting slot, the cross-flow fan blade is rotatably received in the cross-flow fan blade receiving slot, and the support base is embedded in the support base mounting slot.

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