Novel cross-flow fan structure

Abstract

According to the technical scheme, the novel cross-flow fan structure is characterized in that the novel cross-flow fan structure comprises a motor and a fan, a motor support connected with the fan is arranged on the motor, and an output shaft of the motor penetrates through the motor support and extends into the fan to drive fan blades of the fan to rotate. A plurality of rotary buckling holes are formed in the side part of the fan, a plurality of rotary buckling parts screwed into the rotary buckling holes are correspondingly arranged on the motor bracket, and a plurality of fixing buckling parts which are used for fixing the motor bracket on the mounting seat and screwing the rotary buckling parts into the rotary buckling holes by rotating the fan are also arranged on the motor bracket. The motor support is simple in structure, the motor and the fan can be installed and connected more conveniently and quickly, the shape of the motor support is optimized, the strength of the motor support is improved, cost is not increased, motor installation hole positions are optimized, the motor support can be matched with motors of more models, product types are enriched, and users have more choices.

Description

Technical Field

[0001] This utility model relates to a novel cross-flow fan structure. Background Technology

[0002] Cross-flow fans are characterized by their simple structure, small size, large airflow, and low noise. They are widely used in electric fireplaces, equipment cooling and heat dissipation, fresh air systems, ventilation, heating and cooling rooms, wall-mounted air conditioners, display cabinets, air-cooled refrigerators, air evaporators, floor-standing air conditioners, heaters, air curtains, clothes dryers, built-in ovens, and other household appliances. However, existing cross-flow fans still have the disadvantage of inconvenient operation when installing and connecting the motor and fan.

[0003] Existing cross-flow fans mostly use internal rotor motors, where the internal rotor rotates synchronously with the motor's output shaft, which drives the fan blades. The motor bracket is fixedly connected to the external stator. During installation, one hand is sufficient to hold the external stator, and the other hand to hold the fan; the motor bracket's locking mechanism can then be screwed into the locking holes on the side of the fan. However, if the motor is an external rotor motor, the motor bracket is fixedly connected to the internal stator, and the motor bracket and external rotor can rotate relative to each other. In this case, this installation method is not feasible. Because the installation space for the motor bracket is limited, it is inconvenient to hold it by hand. Existing methods rely on complex external tools for clamping, which is inconvenient and slow.

[0004] The information disclosed in the background section is only for enhancing the understanding of the background of this utility model, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] This utility model is achieved through the following technical solution.

[0006] A novel cross-flow fan structure includes a motor 1 and a fan 2. A motor bracket 3 is provided on the motor 1 to connect the fan 2. The output shaft 101 of the motor 1 passes through the motor bracket 3 and extends into the fan 2 to drive the fan blades of the fan 2 to rotate. The characteristic feature is that the motor 1 is an external rotor motor. Several screw holes 201 are provided on the side of the fan 2. Several screw fastening parts 301 are provided on the motor bracket 3 to screw into the screw holes 201. Several fixing fastening parts 302 are also provided on the motor bracket 3 to fix the motor bracket 3 on the mounting base 4 and rotate the fan 2 to screw the screw fastening parts 301 into the screw holes 201.

[0007] The novel cross-flow fan structure described above is characterized in that: the motor 1 includes an outer rotor 102 fixedly connected to the output shaft 101, an inner stator, and a bearing seat 103 fixedly connected to the inner stator, and a plurality of stud portions 5 for fixing the motor bracket 3 are provided on the bearing seat 103.

[0008] As described above, the novel cross-flow fan structure is characterized in that: the motor bracket 3 includes a circular housing, on which a large hole 306 matching the bearing seat 103 is provided, the output shaft 101 passes through the large hole 306, and the housing is provided with a strip hole 303 connected to the large hole 306 and several small holes 304, the housing is tightened to the stud portion 5 by screws passing through the strip hole 303 and the small holes 304, the edge area of ​​the housing extends downward and then bends outward to form the screw fastener 301, and the edge area of ​​the housing extends outward to form the fixing fastener 302.

[0009] The novel cross-flow fan structure described above is characterized in that: a positioning hole 305 is provided in the fixing buckle 302.

[0010] The novel cross-flow fan structure described above is characterized in that: the fixing buckle 302 and the rotating buckle 301 are integrally provided on the housing, and the stud part 5 is integrally provided on the bearing seat 103.

[0011] The novel cross-flow fan structure described above is characterized in that: the screw hole 201 includes a large hole and a small hole connected together, and the screw hole 301 is screwed into the small hole from the large hole.

[0012] The novel cross-flow fan structure described above is characterized in that: four screw holes 201 are provided, symmetrically arranged on the side of the fan 2 in a circumferential manner, and two screw parts 301 are symmetrically arranged.

[0013] The novel cross-flow fan structure described above is characterized in that: two fixing buckles 302 are symmetrically arranged, and the distance between the outer sides of the two fixing buckles 302 is greater than the diameter of the outer rotor 102.

[0014] As described above, the novel cross-flow fan structure is characterized in that: a circuit board 104 and a protective cover 105 are also fixed on the bearing seat 103. The protective cover 105 and the motor bracket 3 are both fixed on the stud portion 5 by screws. The protective cover 105 is also provided with the small hole 304. The protective cover 105 is placed between the bearing seat 103 and the motor bracket 3.

[0015] The novel cross-flow fan structure described above is characterized in that: the mounting base 4 includes a base body, on which a receiving hole 401 for accommodating the motor 1 is provided, and a plurality of slots 402 for positioning the fixing buckle 302 are provided on the edge of the receiving hole 401.

[0016] Compared with the prior art, the present invention has the following advantages.

[0017] 1. This utility model has a simple structure, which makes it easier and faster to install and connect the motor and the fan.

[0018] 2. This utility model optimizes the shape of the motor bracket, improves the strength of the motor bracket, and does not increase the cost. It also optimizes the motor mounting hole positions, which can match more models of motors, enriching the product types and giving users more choices. Attached Figure Description

[0019] Figure 1 This is a perspective view of the utility model.

[0020] Figure 2 This is an exploded view of the present invention.

[0021] Figure 3 This is a perspective view of the motor bracket of this utility model.

[0022] Figure 4 This is a perspective view of the mounting base of this utility model.

[0023] In the diagram: 1 is the motor; 101 is the output shaft; 102 is the outer rotor; 103 is the bearing housing; 104 is the circuit board; 105 is the protective cover; 2 is the fan; 201 is the screw hole; 3 is the motor bracket; 301 is the screw part; 302 is the fixing buckle part; 303 is the strip hole; 304 is the small hole; 305 is the positioning hole; 306 is the large hole; 307 is the flange; 4 is the mounting base; 401 is the receiving hole; 402 is the slot; 5 is the stud part; 6 is the notch. Detailed Implementation

[0024] The technical features of this utility model will be further described in detail below with reference to the accompanying drawings so that those skilled in the art can understand them.

[0025] A novel cross-flow fan structure, such as Figures 1 to 3 As shown, the device includes a motor 1 and a fan 2. A motor bracket 3 is provided on the motor 1 to connect the fan 2. The output shaft 101 of the motor 1 passes through the motor bracket 3 and extends into the fan 2 to drive the fan blades of the fan 2 to rotate. The motor 1 is an external rotor motor. Several screw holes 201 are provided on the side of the fan 2. Several screw parts 301 are provided on the motor bracket 3 to screw into the screw holes 201. Several fixing buckles 302 are also provided on the motor bracket 3 to fix the motor bracket 3 on the mounting base 4 and rotate the fan 2 to screw the screw parts 301 into the screw holes 201.

[0026] The fan 2 of this novel cross-flow fan is cylindrical. During installation, the mounting base 4 is not required. By holding the fixing buckle 302 with your hand and rotating the motor bracket 3 or the fan 2, the screw buckle 301 can be screwed into the fixing buckle 302 of the screw buckle hole 201 to form a snap. Therefore, the worker's hand can be regarded as equivalent to the mounting base 4, but using the mounting base 4 will be more convenient and faster for installation.

[0027] As described above, in the novel cross-flow fan structure, the swivel hole 201 includes a large hole and a small hole connected together, and the swivel part 301 is screwed into the small hole from the large hole.

[0028] The buckle part 301 is provided with a locking protrusion, and two locking points are provided on the outside of the small hole of the buckle hole 201. When the buckle part 301 is screwed into the small hole of the buckle hole 201, the locking protrusion is engaged between the two locking points to form a positioning.

[0029] As described above, in the novel cross-flow fan structure, the rotating buckle hole 201 is preferably provided with four holes, which are symmetrically arranged on the side of the fan 2 in a circumferential manner, while the rotating buckle part 301 is preferably provided with two holes, and the fixing buckle part 302 is also preferably provided with two holes.

[0030] As described above, in the novel cross-flow fan structure, the motor 1 includes an outer rotor 102 fixedly connected to the output shaft 101, an inner stator, and a bearing housing 103 fixedly connected to the inner stator. The bearing housing 103 has multiple studs 5 for fixing the motor bracket 3. The outer rotor 102 drives the output shaft 101 to rotate together; when the output shaft 101 rotates, the bearing housing 103 and the inner stator do not rotate.

[0031] As described above, in the novel cross-flow fan structure, the motor bracket 3 includes a circular housing with a large hole 306 that matches the bearing seat 103. The output shaft 101 passes through the large hole 306. The housing has a strip hole 303 connected to the large hole 306 and several small holes 304. The housing is tightened to the stud portion 5 by screws passing through the strip hole 303 and the small holes 304.

[0032] The strip-shaped hole 303 is an adjustable mounting hole, which can increase the number of motor mounting holes and match more motor models, enriching the product range and giving customers more choices. The diameter of the large hole 306 is slightly larger than the diameter of the bearing housing 103, making it easier to fit the motor bracket 3 and the protective cover 105 onto the bearing housing 103.

[0033] The edge region of the housing portion extends downward and then bends outward to form the snap fastener 301, and the edge region of the housing portion extends outward to form the retaining buckle 302. "Outward" refers to the radial direction. The snap fastener 301 is nested with the snap fastener hole 201 and then rotated to engage, making installation and disassembly convenient and quick.

[0034] The outer edge of the housing has a flange 307, which strengthens the overall strength of the motor bracket 3, making the motor bracket 3 less prone to deformation. After installation, the flange 307 rests against the side of the fan 2.

[0035] Preferably, the fixing buckle 302 and the screw buckle 301 are integrally provided on the housing, that is, the motor bracket 3 is an integral sheet metal part, and the stud part 5 is also integrally provided on the bearing seat 103.

[0036] The surface of the fixing buckle 302 is flush with the surface of the housing, and the distance between the outer sides of the two fixing buckles 302 is greater than the diameter of the outer rotor 102, which facilitates positioning on the mounting base 4.

[0037] As described above, in the novel cross-flow fan structure, a circuit board 104 and a protective cover 105 are also fixed on the bearing housing 103. The circuit board 104, the protective cover 105, and the motor bracket 3 are all fixed on the stud portion 5 by screws. The protective cover 105 is placed between the bearing housing 103 and the motor bracket 3. The protective cover 105 is also provided with the small hole 304 and the large hole 306. The protective cover 105 is also provided with a notch 6 for the wiring of the circuit board 104 to pass through.

[0038] Additionally, the fixing buckle 302 may also be provided with a positioning hole 305, and the mounting base 4 includes a base body, such as Figure 4 As shown, the base has a receiving hole 401 for accommodating the motor 1, and a plurality of slots 402 for positioning the fixing buckle 302 are provided on the edge of the receiving hole 401. During installation, screws can be tightened through the positioning holes 305 into the slots 402 for further fixation.

[0039] The embodiments described herein are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A novel cross-flow fan structure, comprising a motor (1) and a fan (2), wherein a motor bracket (3) for connecting the fan (2) is provided on the motor (1), and the output shaft (101) of the motor (1) passes through the motor bracket (3) and extends into the fan (2) to drive the fan blades of the fan (2) to rotate, characterized in that: The motor (1) is an external rotor motor. Several screw holes (201) are provided on the side of the fan (2). Several screw parts (301) are provided on the motor bracket (3) to screw into the screw holes (201). Several fixing buckles (302) are also provided on the motor bracket (3) to fix the motor bracket (3) on the mounting base (4) and rotate the fan (2) to screw the screw parts (301) into the screw holes (201).

2. The new structure of cross flow fan according to claim 1, characterized in that: The motor (1) includes an outer rotor (102) fixedly connected to the output shaft (101), an inner stator, and a bearing housing (103) fixedly connected to the inner stator. The bearing housing (103) is provided with a plurality of studs (5) for fixing the motor bracket (3).

3. The new structure of cross flow fan according to claim 2, characterized in that: The motor bracket (3) includes a circular housing with a large hole (306) on the housing that matches the bearing seat (103). The output shaft (101) passes through the large hole (306). The housing has a strip hole (303) connected to the large hole (306) and several small holes (304). The housing is tightened to the stud portion (5) by screws passing through the strip hole (303) and the small holes (304). The outer edge of the housing has a flange (307). The edge area of ​​the housing extends downward and then bends outward to form the buckle portion (301). The edge area of ​​the housing extends outward to form the fixing buckle portion (302).

4. The new structure of cross flow fan according to claim 1, characterized in that: The fixing buckle (302) is provided with a mounting hole (305).

5. The new structure of cross flow fan according to claim 2, wherein: The fixing buckle (302) and the screw buckle (301) are integrally provided on the housing, and the stud (5) is integrally provided on the bearing seat (103).

6. The new structure of cross flow fan according to any one of claims 1 to 5, characterized in that: The screw hole (201) includes a large hole and a small hole connected together, and the screw hole (301) is screwed into the small hole from the large hole.

7. The novel cross-flow fan structure according to any one of claims 1 to 5, characterized in that: The screw holes (201) are provided in four circumferentially symmetrically on the side of the fan (2), and the screw parts (301) are provided in two symmetrically.

8. The new structure of cross flow fan according to any one of claims 2 to 5, characterized in that: Two fixing buckles (302) are symmetrically arranged, and the distance between the outer sides of the two fixing buckles (302) is greater than the diameter of the outer rotor (102).

9. The new structure of cross flow fan according to any one of claims 3 to 5, characterized in that: A circuit board (104) and a protective cover (105) are also fixed on the bearing housing (103). The protective cover (105) and the motor bracket (3) are both fixed to the stud portion (5) by screws. A small hole (304) is also provided on the protective cover (105). The protective cover (105) is placed between the bearing housing (103) and the motor bracket (3).

10. The new structure of cross flow fan according to any one of claims 3 to 5, characterized in that: The mounting base (4) includes a base body, on which a receiving hole (401) for accommodating the motor (1) is provided, and a plurality of slots (402) for positioning the fixing buckle (302) are provided on the edge of the receiving hole (401).

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