A rotating and storing type circulating fan

Abstract

The utility model discloses a kind of screwing storage type circulation fans, including fan main body and support, fan main body includes fan shell, support is equipped with fork arm, fan main body is located at the inboard of fork arm, fork arm articulates fan shell at articulation axis, recess is formed on support, fan shell is formed with shell head end face, shell head end face is equipped with air outlet grating, air outlet grating is formed with air outlet, shell head end face and recess are coaxially arranged about articulation axis, fan main body has storage position relative to support, on storage position, shell head end face is adapted to configure in recess.

Description

Technical Field

[0001] This utility model relates to the field of fans, specifically to a folding and retractable circulating fan. Background Technology

[0002] Currently, circulating fans with longer air delivery distances are gradually gaining market acceptance. One type of circulating fan allows the air outlet to swing downwards when not in use, preventing dust or debris from accumulating at the outlet. For example, see Chinese Utility Model Patent Publication No. CN215566769U, "A Desktop Circulating Fan for Easy Storage." The lower surface of the base of this circulating fan is concave to avoid obstructing the air outlet of the swinging fan body. However, when stored, the cavity formed by the concave surface is not utilized, hindering the reduction of the circulating fan's overall size. Therefore, improvement is necessary. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a screw-down storage type circulating fan, which makes the circulating fan more compact when it is in the storage state.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] The present invention discloses a retractable circulating fan, comprising a fan body and a support. The fan body includes a fan housing, and the support is provided with a fork arm. The fan body is located on the inner side of the fork arm, and the fork arm is hinged to the fan housing at the hinge axis. A recess is formed on the support, and a shell head end face is formed on the shell head end face. An air outlet is formed on the air outlet grille. The shell head end face and the recess are coaxially arranged about the hinge axis. The fan body has a storage position relative to the support, and in the storage position, the shell head end face is adapted to be disposed in the recess.

[0006] Preferably, the fan housing has a tail section with an air inlet, and the hinge axis is located between the tail section and the head end face, with the hinge axis offset to one side of the tail section.

[0007] Preferably, the tail portion of the shell is gradually reduced in a direction away from the hinge axis.

[0008] Preferably, the recess is an arc shape with higher ends and a lower middle.

[0009] Preferably, a support hole is formed on the fork arm, a limiting block is formed on one side of the support hole, a hinge shaft head is formed on the fan housing, the hinge shaft head is adapted to connect to the corresponding support hole, a fan-shaped block is formed on the outer side of the hinge shaft head, and in the storage position, one end of the fan-shaped block is attached to the limiting block.

[0010] Compared with the prior art, the advantages of this utility model are as follows: by setting a recess on the support, forming a shell head end face on the fan shell, providing an air outlet grille on the shell head end face, forming an air outlet on the air outlet grille, and setting the shell head end face and the recess coaxially about the hinge axis, the fan body has a storage position relative to the support. In the storage position, the shell head end face is appropriately positioned in the recess, which is beneficial for the circulation fan to have a more compact structure when in the storage state. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the circulating fan of this utility model in use.

[0012] Figure 2 This is an exploded view of the circulating fan of this utility model in its stored state.

[0013] Figure 3 This is a three-dimensional structural diagram of the circulating fan of this utility model in its stored state.

[0014] Figure 4 This is a cross-sectional view of the circulating fan of this utility model in its stored state, viewed from the right.

[0015] Figure 5 This is a cross-sectional view of the circulating fan of this utility model in its stored state.

[0016] Figure 6 This is a schematic diagram of the left-side structure of the circulating fan of this utility model in the upward airflow state.

[0017] Figure 7 This is a cross-sectional view of the circulating fan of this utility model in the upward airflow state, viewed from the right.

[0018] Figure 8 This is a rear-view perspective three-dimensional structural diagram of the fan housing of this utility model.

[0019] Figure 9 This is a partial cross-sectional view of the left side of the circulating fan of this utility model in the upward airflow state.

[0020] Figure 10 This is a partial cross-sectional view of the left side of the circulating fan of this utility model in its stored state.

[0021] Labeling: Fan body 1; Fan housing 10; Hinge shaft 100; Hinge shaft head 101; Fan-shaped block 1011; Housing tail 102; Air inlet 1021; Housing head end face 103; Air outlet grille 1030; Air outlet 1031; Fan motor 11; Turbine fan blade 12; Support 2; Lower convex rotating shaft 201; Fixed chassis 21; Movable seat 22; Fork arm 221; Support hole 2211; Limiting block 2212; Recess 2201. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] The rotating and retractable circulating fan of this utility model, such as Figure 1 and Figure 2 As shown, the device includes a fan body 1 and a support 2. The fan body 1 includes a fan housing 10, and the support 2 is provided with a fork arm 221. The fan body 1 is located inside the fork arm 221, as shown. Figure 5 As shown, the fork arm 221 hinges the fan housing 10 at the hinge axis 100. When the fan body 1 blows air forward, the hinge axis 100 extends in the left-right direction. Figure 2 As shown, a recess 2201 is formed on the support 2, as... Figure 1 As shown, the fan housing 10 has a front end face 103, and an air outlet grille 1030 is provided on the front end face 103. An air outlet 1031 is formed on the air outlet grille 1030. That is to say, as... Figure 1 , Figure 4 and Figure 6 As shown, the outer end of the air outlet grille 1030 (relative to the internal space of the fan housing 10) is located on the front end face 103 of the housing. The air outlet grille 1030 includes generally radial grille bars, allowing airflow to pass between adjacent grille bars. In other words, the gaps between adjacent grille bars form the air outlet 1031 structure. The air outlet grille 1030 blocks hands, preventing fingers from being inserted into the fan housing 10. Figure 4 As shown, the shell head end face 103 and the recess 2201 are coaxially arranged about the hinge axis 100. Figure 4 In the diagram, the hinge axis 100 is shown as a point, meaning that the shell head end face 103 is a part of a rotating structure about the hinge axis 100, and the recess 2201 is also a part of a rotating structure about the hinge axis 100. Therefore, in... Figure 4 In the middle, the surfaces of the head end face 103 and the recess 2201 are both arc-shaped. For example... Figures 3 to 5 As shown, the fan body 1 has a storage position relative to the support 2. In the storage position, the front end face 103 of the shell is adapted to be placed in the recess 2201, as shown. Figure 4As shown, in order to avoid interference and collision between the shell end face 103 and the recess 2201 due to manufacturing and assembly errors, a gap is left between the shell end face 103 and the recess 2201. The width of the gap (dimension "W") can be 2 mm to 4 mm. The recess 2201 is located on the outside of the shell end face 103 (with respect to the hinge axis 100).

[0024] like Figure 4 and Figure 5 As shown, when the fan body 1 is swung downwards so that the front end face 103 of the casing is properly positioned within the recess 2201, it is equivalent to the fan body 1 and the support 2 being rotated relative to each other to a retracted state. Since the front end face 103 of the casing and the recess 2201 are coaxially arranged about the hinge axis 100, and the front end face 103 of the casing is properly positioned within the recess 2201, that is, the front end face 103 of the casing has an outward convex shape, so that the air outlet end of the fan body 1 (i.e., the end with the air outlet 1031) can be hidden inside the recess 2201, thus making full use of the internal space of the recess 2201; as Figure 4 As shown, the fan body 1 also includes a fan motor 11 and a turbine blade 12. The fan motor 11 is installed inside the fan housing 10, and the turbine blade 12 is coaxially mounted on the output shaft of the fan motor 11. Since the end face 103 of the housing is convex, the air outlet grille 1030 can be set as an arc-shaped disc structure. The inner end of the air outlet grille 1030 is concave relative to the internal space of the fan housing 10. The concave structure of the air outlet grille 1030 provides installation space for the turbine blade 12. That is to say, when the circulating fan is in the retracted state, the turbine blade 12 can be closer to the recess 2201, which allows the axial length of the fan body 1 (on the rotation axis of the turbine blade 12) to be shortened. This makes the circulating fan more compact in the retracted state, allowing it to have a smaller external volume and making it easier to store and place. Figure 3 As shown, when the circulating fan is in the retracted state, the air outlet 1031 is located inside the recess 2201, thus preventing dust or debris from easily accumulating at the air outlet 1031. At this time, simply covering the air inlet 1021 with a cloth is sufficient to prevent dust and debris from easily entering the interior of the fan body 1. Figure 1 As shown, when the circulating fan of this utility model is needed, the fan body 1 is swung upward around the hinge axis 100 so that the air outlet 1031 leaves the recess 2201. Since the shell end face 103 and the recess 2201 are coaxially arranged about the hinge axis 100, the shell end face 103 will not collide with the recess 2201.

[0025] Furthermore, such as Figure 2 and Figure 3 As shown, the fan housing 10 has a housing tail 102, as... Figure 3 and Figure 8As shown, an air inlet 1021 is formed on the tail portion 102 of the casing. Specifically, the tail portion 102 has three concentrically arranged ring plates, which are coaxially arranged with the turbine blades 12. The tail portion 102 also has spokes, and the ring plates are connected as one unit by the spokes. The spaces on both sides of the radial direction of the ring plates form the air inlet 1021. Figure 5 As shown, the hinge axis 100 is located between the tail end 102 and the head end face 103 of the shell. The hinge axis 100 is offset to one side of the tail end 102. That is, the distance (dimension "L") from the upper end of the tail end 102 to the hinge axis 100 is less than the distance (dimension "R") from the lower end of the head end face 103 to the hinge axis 100. With the above arrangement, as Figure 6 and Figure 7 As shown, when the fan body 1 swings to the upward airflow state, the tail 102 of the shell faces the recess 2201. At this time, there is a large space between the tail 102 of the shell and the recess 2201, so the airflow can easily flow into the space between the tail 102 of the shell and the recess 2201. Then the airflow is drawn into the fan housing 10, and then the airflow is blown upward through the air outlet 1031.

[0026] Furthermore, such as Figure 2 and Figure 4 As shown, the tail portion 102 of the shell gradually tapers away from the hinge axis 100, that is to say, in Figure 4 In the state shown, the tail portion 102 of the shell is smaller at the top and larger at the bottom, as... Figure 7 As shown, when the circulating fan is in the upward airflow state, the tail 102 of the casing is larger at the top and smaller at the bottom. The air intake channel formed by the combination of the tail 102 and the recess 2201 is relatively wide, and the outside air can be guided by the tail 102 and gently turn into the fan casing 10, which is conducive to the circulating fan having a better air intake effect.

[0027] Furthermore, such as Figure 2 and Figure 5 As shown, the recess 2201 is designed as an arc shape with higher ends and a lower middle. In other words, the generatrix of the shape of the recess 2201 about the hinge axis 100 is a concave arc. Since the shell head end face 103 and the recess 2201 are coaxially arranged about the hinge axis 100, accordingly, as... Figure 5 As shown, the head end face 103 of the shell is a convex arc shape with higher ends and a lower middle, as... Figure 1 and Figure 6 As shown, this makes the end face 103 of the shell approximately spherical, allowing the user to grasp the air outlet of the fan body 1 with their hand. The aforementioned convex shape of the air outlet of the fan body 1 is more in line with the curvature of the palm and fingers, making it easier for the user to pick up the circulating fan.

[0028] Furthermore, such as Figure 2As shown, a support hole 2211 is formed on the fork arm 221, such as Figure 9 As shown, a limiting block 2212 is formed on one side of the support hole 2211. The fork arm 221 has a hollow structure, and the limiting block 2212 is located inside the fork arm 221. Figure 8 As shown, the fan housing 10 has a hinged shaft head 101, as... Figure 5 As shown, the hinged shaft head 101 is adapted to connect to the corresponding support hole 2211, so the axis of the hinged shaft head 101 is the hinge axis 100, as shown. Figure 8 As shown, a fan-shaped block 1011 is formed on the outer side of the hinge head 101, as... Figure 10 As shown, in the storage position, one end of the fan-shaped block 1011 is attached to the connecting limiting block 2212. That is, the limiting block 2212 restricts the vertical swing angle of the fan body 1. When the fan body 1 swings downwards until the axis of the turbine blades 12 is vertical and the air outlet 1031 faces downwards, one end of the fan-shaped block 1011 just contacts the front end of the limiting block 2212, allowing the user to quickly and accurately switch the fan body 1 to the storage state. Figure 9 As shown, for example, when the fan body 1 swings upward so that the axis of the turbine blade 12 is in a vertical position and the air outlet 1031 is upward, the other end of the fan block 1011 just contacts the rear end of the limiting block 2212, and the fan body 1 is limited and cannot be flipped backward.

[0029] like Figure 1 As shown, the support 2 includes a fixed base 21 and a movable base 22. The fixed base 21 is used to place on a table. A recess 2201 is specifically formed on the movable base 22. A fork arm 221 is formed on the upper part of the movable base 22. A downwardly protruding rotating shaft 201 is formed on the lower part of the movable base 22. The downwardly protruding rotating shaft 201 extends in the vertical direction. When the circulating fan is in the retracted state, the downwardly protruding rotating shaft 201 is coaxially arranged with the turbine fan blade 12. The downwardly protruding rotating shaft 201 is rotatably connected to the fixed base 21, so that the fan body 1 can swing horizontally. In some embodiments, the fan housing 10 can be angularly positioned relative to the fork arm 221 by friction. For example, a friction rubber ring is provided between the hinge shaft head 101 and the support hole 2211 (it should be noted that the above-mentioned "friction rubber ring" is not shown in any of the figures). The friction rubber ring is circumferentially positioned with the hinge shaft head 101. For example, refer to the "A Quick Positioning Electric Fan" of Chinese Utility Model Patent Publication No. CN204152831U.

Claims

1. A retractable circulating fan, comprising a fan body (1) and a support (2), wherein the fan body (1) includes a fan housing (10), the support (2) is provided with a fork arm (221), the fan body (1) is disposed on the inner side of the fork arm (221), and the fork arm (221) is hinged to the fan housing (10) at a hinge axis (100), characterized in that: The support (2) has a recess (2201), the fan housing (10) has a shell head end face (103), the shell head end face (103) is provided with an air outlet grille (1030), the air outlet grille (1030) has an air outlet (1031), the shell head end face (103) and the recess (2201) are coaxially arranged about the hinge axis (100), the fan body (1) has a storage position relative to the support (2), and in the storage position, the shell head end face (103) is adapted to be placed in the recess (2201).

2. The screw-down retractable circulating fan according to claim 1, characterized in that: The fan housing (10) has a housing tail (102) and an air inlet (1021) is formed on the housing tail (102). The hinge axis (100) is located between the housing tail (102) and the housing head end face (103), and the hinge axis (100) is offset to one side of the housing tail (102).

3. The screw-down retractable circulating fan according to claim 2, characterized in that: The tail portion (102) of the shell is gradually reduced in size along a direction away from the hinge axis (100).

4. The screw-down retractable circulating fan according to claim 1, characterized in that: The recess (2201) is designed as an arc shape with high left and right ends and low middle.

5. The screw-down retractable circulating fan according to claim 1, characterized in that: A support hole (2211) is formed on the fork arm (221), and a limiting block (2212) is formed on one side of the support hole (2211). A hinge head (101) is formed on the fan housing (10). The hinge head (101) is adapted to connect to the corresponding support hole (2211). A fan-shaped block (1011) is formed on the outer side of the hinge head (101). In the storage position, one end of the fan-shaped block (1011) is attached to the limiting block (2212).

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