Improved structure of electric fan

Abstract

The utility model discloses an electric fan improved structure, including fan main body and support frame, and fan main body includes motor, fan blade, front screen case and rear screen case, and the drive shaft of motor is connected with fan blade to be arranged at the back of rear screen case, still include blocking ring subassembly, connecting piece and locking piece, and the rear edge of front screen case is clamped in the inside front end of blocking ring subassembly, and the front edge of rear screen case is clamped in the inside rear end of blocking ring subassembly, and the vertical projection of at least one part fan blade is located in the vertical projection range of blocking ring subassembly, and the one end of connecting piece passes blocking ring subassembly from inside to outside, and locking piece sets up support frame in rotatable mode, and the one end of locking piece passes one end of support frame and is connected with the one end of connecting piece to make blocking ring subassembly be clamped between connecting piece and locking piece, this kind of electric fan improved structure, and blocking ring subassembly plays certain blocking guide effect in vertical direction to wind, is favorable to the wind and is discharged from front screen case, improves user's use experience.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to an improved structure for an electric fan. Background Technology

[0002] Existing electric fans, such as the one described in Chinese Utility Model Patent CN220267984U (title: A Fan for Easy Packaging, authorized on December 29, 2023), include a fan body and a support frame. The fan body is rotatably mounted at both ends of the support frame around a horizontal axis. The fan body includes a mesh cover, a motor, and fan blades. The motor is located on the back of the mesh cover, and the fan blades are mounted on the motor shaft and located inside the mesh cover. The two ends of the support frame are rotatably connected to the back of the mesh cover, and the width of the support frame is smaller than the diameter of the fan body. In this utility model, the two ends of the support frame are rotatably connected to the back of the mesh cover, and the width of the support frame is smaller than the diameter of the fan body, thereby reducing the packaging volume of the fan, lowering the difficulty of packaging and transporting the fan, and facilitating packaging and transportation.

[0003] However, the above-mentioned fan structure still has the following shortcomings: (1) The above-mentioned mesh cover includes a first mesh cover and a second mesh cover connected to each other. The fan blades are wrapped in the first mesh cover and the second mesh cover. However, since the first mesh cover and the second mesh cover are both hollow, some of the wind generated when the fan blades rotate is discharged from the upper and lower parts of the first mesh cover and the second mesh cover, resulting in a certain amount of wind power waste, which is not conducive to the user's experience. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an improved electric fan structure with the addition of a blocking ring assembly, which plays a certain role in blocking and guiding the air generated by the fan blades in the vertical direction, and the product is easier to assemble and disassemble.

[0005] The purpose of this utility model is achieved as follows:

[0006] An improved structure for an electric fan includes a fan body and a support frame. The fan body includes a motor, fan blades, a front grille, and a rear grille. The motor is located on the back of the rear grille, and its drive shaft passes through the rear grille and connects to the fan blades. The fan body further includes a blocking ring assembly, a connector, and a locking member. The rear edge of the front grille is engaged with the inner front end of the blocking ring assembly, and the front edge of the rear grille is engaged with the inner rear end of the blocking ring assembly. The fan blades are enclosed within the front grille, rear grille, and blocking ring assembly, and at least a portion of the fan blades' vertical projection lies within the vertical projection range of the blocking ring assembly. One end of the connector passes through the blocking ring assembly from the inside out. The locking member... The fan is rotatably mounted on the support frame, with one end of the locking component passing through one end of the support frame and connecting to the end of the connector that passes through the blocking ring assembly. This allows the blocking ring assembly to be clamped between the connector and the locking component. This improved structure of the electric fan, by adding a blocking ring assembly, provides a certain degree of obstruction and guidance for the airflow generated by the fan blades during operation in the vertical direction, which facilitates the airflow from the front grille and improves the user experience. Furthermore, the fan body can be installed and rotated on the support frame through the cooperation of the connector and the locking component. Users only need to operate the locking component to install and remove the fan body from the support frame, making the operation quite convenient.

[0007] The objective of this utility model can also be achieved by the following technical measures:

[0008] Specifically, the blocking ring assembly includes an upper blocking half-ring and a lower blocking half-ring connected to each other, with the lower surface of the upper blocking half-ring abutting against the upper surface of the lower blocking half-ring. The upper blocking half-ring has first latches at its inner front and rear ends, with the upper rear edge of the front mesh cover and the upper front edge of the rear mesh cover respectively engaging in the corresponding first latches. The lower blocking half-ring has second latches at its inner front and rear ends, with the lower rear edge of the front mesh cover and the lower front edge of the rear mesh cover respectively engaging in the corresponding second latches. One end of the connector passes through the abutting area of ​​the upper and lower blocking half-rings from the inside out. This allows the connector to simultaneously restrict both the upper and lower blocking half-rings, facilitating the connection between the connector and the locking member to simultaneously clamp and lock the upper and lower blocking half-rings. Furthermore, the upper blocking half-ring connects with the front and rear mesh covers through its first latch, and the lower blocking half-ring connects with the front and rear mesh covers through its second latch. This latching method is relatively easy to implement.

[0009] Specifically, it further includes connecting screws and connecting nuts. The upper blocking half-ring is provided with an upper hollow connecting post, and the upper opening of the upper hollow connecting post extends to the outer wall of the upper blocking half-ring. The lower blocking half-ring is provided with a lower hollow connecting post, and the lower opening of the lower hollow connecting post extends to the outer wall of the lower blocking half-ring. The connecting nut is placed inside the lower hollow connecting post, and the connecting screw is placed inside the upper hollow connecting post, with one end of the connecting screw extending downward into the lower hollow connecting post and connecting to the connecting nut. The connecting screw and the connecting nut cooperate to achieve relative locking between the upper blocking half-ring and the lower blocking half-ring. At the same time, the relative locking of the upper blocking half-ring and the lower blocking half-ring also helps to improve the tightness of the engagement between the front and rear mesh covers and the blocking ring assembly.

[0010] Specifically, the upper and lower blocking half-rings are identical in shape and size, so that the overall structure of the blocking ring assembly is simple and easy to implement.

[0011] Specifically, the vertical projection of the fan blade is completely within the vertical projection range of the blocking ring assembly, so that the blocking ring assembly has a better blocking and guiding effect on the wind generated by the fan blade in the vertical direction.

[0012] Specifically, the connecting member includes a connecting bolt and a blocking plate. The locking member has a connecting screw hole. The blocking plate is sleeved on the outer periphery of the connecting bolt and abuts against the inner side of the blocking ring assembly. One end of the connecting bolt passes through the blocking ring assembly and connects to the connecting screw hole of the locking member. The connecting member achieves a stable connection with the locking member through the connecting bolt. At the same time, the connecting member cooperates with the locking member through the blocking plate, so that the blocking ring assembly is well clamped between the blocking plate and the locking member, and its fixing effect is good.

[0013] Specifically, the locking component includes an operating part and a cylindrical connecting part. One end of the connecting part passes through one end of the support frame and abuts against the outer side of the blocking ring assembly. One end of the connecting part has the connecting screw hole. The cylindrical connecting part facilitates the rotation of the locking component on the support frame, while the operating part facilitates the user to rotate the locking component.

[0014] Furthermore, it also includes a control box, which is fixed to the back of the rear grille and the motor is placed inside the control box. The control box is equipped with control buttons to facilitate user control of the motor and fan blades.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) This electric fan has an improved structure. By adding a blocking ring assembly, the blocking ring assembly plays a certain role in blocking and guiding the wind generated by the fan blades in the vertical direction, which is conducive to the wind being discharged from the front grille and improving the user experience. Furthermore, the fan body can be installed and rotated on the support frame through the cooperation of the connecting parts and the locking parts. Users only need to operate the locking parts to realize the installation and removal of the fan body on the support frame, which is relatively simple to operate.

[0017] (2) The connecting screw and the connecting nut work together to achieve relative locking between the upper blocking half ring and the lower blocking half ring. At the same time, the relatively locked upper blocking half ring and the lower blocking half ring also help to improve the tightness of the snap-fit ​​between the front and rear mesh covers and the blocking ring assembly.

[0018] (3) The connector is stably connected to the locking part through the connecting bolt. At the same time, the connector cooperates with the locking part through the blocking plate so that the blocking ring assembly is well clamped between the blocking plate and the locking part, and its fixing effect is good. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the improved structure of the electric fan according to this utility model.

[0020] Figure 2 This is an exploded view of the improved structure of the electric fan according to this utility model.

[0021] Figure 3 for Figure 2 Enlarged view of point A.

[0022] Figure 4 This is a cross-sectional view of the improved structure of the electric fan according to this utility model.

[0023] Figure 5 for Figure 4 Enlarged view of point B.

[0024] Figure 6 This is a three-dimensional enlarged view of the upper blocking semi-ring of this utility model. Detailed Implementation

[0025] The present patent will be further described below with reference to the accompanying drawings and embodiments: The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures, and should not be construed as limiting the present patent; In order to better illustrate the embodiments of the present patent, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] The terms "first," "second," etc., used in this patent do not indicate any order, quantity, or importance, but are merely for distinction. The terms "one," "a kind," etc., used in this patent do not indicate a limitation on quantity, but rather indicate the presence of at least one of the mentioned objects. The terms indicating direction or location used in this patent, such as "top," "bottom," "side," "longitudinal," "lateral," "middle," "center," "outer," "inner," "horizontal," "vertical," "left," "right," "above," "below," etc., reflect relative positions, not absolute positions; those skilled in the art can understand the specific meaning of these terms according to the specific circumstances.

[0027] Implementation examples, in conjunction with Figures 1 to 6 As shown, an improved structure for an electric fan includes a fan body 1 and a support frame 2. The fan body 1 includes a motor, fan blades 3, a front grille 4, and a rear grille 5. The motor is located on the back of the rear grille 5, and the motor's drive shaft passes through the rear grille 5 and connects to the fan blades 3. The fan body 1 also includes a blocking ring assembly 6, a connector 7, and a locking member 8. The rear edge of the front grille 4 is engaged with the inner front end of the blocking ring assembly 6, and the front edge of the rear grille 5 is engaged with the inner rear end of the blocking ring assembly 6. The fan blades 3 are enclosed within the front grille 4, the rear grille 5, and the blocking ring assembly 6, and at least a portion of the vertical projection of the fan blades 3 lies within the vertical projection range of the blocking ring assembly 6. One end of the connector 7 passes through the blocking ring assembly 6 from the inside out. The locking member 8 is rotatably mounted on the support frame 2, and one end of the locking member 8 passes through one end of the support frame 2 and connects to one end of the connector 7 that passes through the blocking ring assembly 6, so that the blocking ring assembly 6 is clamped between the connector 7 and the locking member 8.

[0028] As a specific embodiment, the blocking ring assembly 6 includes an upper blocking half-ring 61 and a lower blocking half-ring 62 connected together, with the lower surface of the upper blocking half-ring 61 abutting against the upper surface of the lower blocking half-ring 62. The upper blocking half-ring 61 has a first latch 611 at both the front and rear ends of its inner side. The upper rear edge of the front mesh cover 4 and the upper front edge of the rear mesh cover 5 are respectively inserted into the corresponding first latch 611. The lower blocking half-ring 62 has a second latch 621 at both the front and rear ends of its inner side. The lower rear edge of the front mesh cover 4 and the lower front edge of the rear mesh cover 5 are respectively inserted into the corresponding second latch 621. One end of the connector 7 passes through the abutting part of the upper blocking half-ring 61 and the lower blocking half-ring 62 from the inside out.

[0029] In this embodiment, a connecting screw 10 and a connecting nut 20 are also included. An upper hollow connecting post 612 is provided on the upper blocking half ring 61, and the upper opening of the upper hollow connecting post 612 extends to the outer wall of the upper blocking half ring 61. A lower hollow connecting post 622 is provided on the lower blocking half ring 62, and the lower opening of the lower hollow connecting post 622 extends to the outer wall of the lower blocking half ring 62. The connecting nut 20 is placed inside the lower hollow connecting post 622. The connecting screw 10 is placed inside the upper hollow connecting post 612, and one end of the connecting screw 10 extends downward into the lower hollow connecting post 622 and connects with the connecting nut 20.

[0030] As a preferred embodiment, the upper blocking half-ring 61 and the lower blocking half-ring 62 have the same shape and size.

[0031] As a preferred embodiment, the vertical projection of the fan blade 3 is entirely within the vertical projection range of the blocking ring assembly 6.

[0032] As a more specific solution, there are two connectors 7 and two locking pieces 8. The two locking pieces 8 are respectively set at both ends of the support frame 2, and the two connectors 7 are respectively set at both ends of the blocking ring assembly 6, so that the two ends of the fan body 1 are rotatably connected to the two ends of the support frame 2 through the above two sets of connectors 7 and locking pieces 8.

[0033] In this embodiment, the connector 7 includes a connecting bolt 71 and a blocking plate 72. The locking member 8 has a connecting screw hole 81. The blocking plate 72 is sleeved on the outer periphery of the connecting bolt 71 and abuts against the inner side of the blocking ring assembly 6. One end of the connecting bolt 71 passes through the blocking ring assembly 6 and is connected to the connecting screw hole 81 of the locking member 8.

[0034] In this embodiment, the locking member 8 includes an operating part 82 and a cylindrical connecting part 83. One end of the connecting part 83 passes through one end of the support frame 2 and abuts against the outer side of the blocking ring assembly 6. One end of the connecting part 83 has the connecting screw hole 81.

[0035] In this embodiment, a control box 9 is also included. The control box 9 is fixed to the back of the rear mesh cover 5 and the motor is placed inside the control box 9. The control box 9 is provided with control buttons 91.

[0036] The embodiments described above are merely examples for clearly illustrating this patent, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this patent, and these all fall within the scope of protection of this patent. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An improved structure for an electric fan, comprising a fan body (1) and a support frame (2), wherein the fan body (1) includes a motor, fan blades (3), a front grille (4), and a rear grille (5), the motor is disposed on the back of the rear grille (5), and the drive shaft of the motor passes through the rear grille (5) and is connected to the fan blades (3), characterized in that, It also includes a blocking ring assembly (6), a connector (7) and a locking member (8). The rear edge of the front mesh cover (4) is locked inside the front end of the blocking ring assembly (6), and the front edge of the rear mesh cover (5) is locked inside the rear end of the blocking ring assembly (6). The fan blade (3) is wrapped inside the front mesh cover (4), the rear mesh cover (5) and the blocking ring assembly (6), and at least a portion of the vertical projection of the fan blade (3) is located within the vertical projection range inside the blocking ring assembly (6). One end of the connector (7) passes through the blocking ring assembly (6) from the inside to the outside. The locking member (8) is rotatably mounted on the support frame (2), and one end of the locking member (8) passes through one end of the support frame (2) and is connected to one end of the connector (7) that passes through the blocking ring assembly (6), so that the blocking ring assembly (6) is clamped between the connector (7) and the locking member (8).

2. The improved electric fan structure according to claim 1, characterized in that, The blocking ring assembly (6) includes an upper blocking half ring (61) and a lower blocking half ring (62) connected to each other, with the lower surface of the upper blocking half ring (61) and the upper surface of the lower blocking half ring (62) abutting each other. The upper blocking half ring (61) has a first slot (611) at both the front and rear ends of its inner side. The upper part of the rear edge of the front mesh cover (4) and the upper part of the front edge of the rear mesh cover (5) are respectively inserted into the corresponding first slot (611). The lower blocking half ring (62) has a second slot (621) at both the front and rear ends of its inner side. The lower part of the rear edge of the front mesh cover (4) and the lower part of the front edge of the rear mesh cover (5) are respectively inserted into the corresponding second slot (621). One end of the connector (7) passes through the abutting part of the upper blocking half ring (61) and the lower blocking half ring (62) from the inside out.

3. The improved electric fan structure according to claim 2, characterized in that, It also includes a connecting screw (10) and a connecting nut (20). The upper blocking half ring (61) is provided with an upper hollow connecting post (612) and the upper opening of the upper hollow connecting post (612) extends to the outer wall of the upper blocking half ring (61). The lower blocking half ring (62) is provided with a lower hollow connecting post (622) and the lower opening of the lower hollow connecting post (622) extends to the outer wall of the lower blocking half ring (62). The connecting nut (20) is placed inside the lower hollow connecting post (622). The connecting screw (10) is placed inside the upper hollow connecting post (612) and one end of the connecting screw (10) extends downward into the lower hollow connecting post (622) and connects with the connecting nut (20).

4. The improved electric fan structure according to claim 3, characterized in that, The upper blocking half-ring (61) and the lower blocking half-ring (62) are the same in shape and size.

5. The improved electric fan structure according to claim 1, characterized in that, The vertical projection of the fan blade (3) is completely within the vertical projection range of the blocking ring assembly (6).

6. The improved electric fan structure according to claim 1, characterized in that, The connector (7) includes a connecting bolt (71) and a blocking plate (72). The locking member (8) has a connecting screw hole (81). The blocking plate (72) is sleeved on the outer periphery of the connecting bolt (71) and abuts against the inner side of the blocking ring assembly (6). One end of the connecting bolt (71) passes through the blocking ring assembly (6) and is connected to the connecting screw hole (81) of the locking member (8).

7. The improved electric fan structure according to claim 6, characterized in that, The locking member (8) includes an operating part (82) and a cylindrical connecting part (83). One end of the connecting part (83) passes through one end of the support frame (2) and abuts against the outside of the blocking ring assembly (6). One end of the connecting part (83) has the connecting screw hole (81).

8. The improved electric fan structure according to claim 1, characterized in that, It also includes a control box (9), which is fixed to the back of the rear mesh cover (5) and the motor is placed inside the control box (9). The control box (9) is equipped with control buttons (91).

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