Fan connecting structure and blowing device

Abstract

The utility model discloses a fan connecting structure and a blowing device. The fan connecting structure comprises a fan outer cover, a base shell and a support used for connecting the fan outer cover and the base shell. One end of the support is arranged on the base shell, and the other end of the support penetrates into the outer wall, close to the base shell, of the fan outer cover and is rotationally connected with the fan outer cover. A limiting structure used for limiting the pitching adjusting angle of the fan is arranged between the support and the fan outer cover. The support is arranged between the fan outer cover and the base shell, one end of the support is fixed to the base shell, and the other end of the support penetrates through the bottom of the fan outer cover and is rotationally connected with the fan outer cover, so that the fan head is not limited by the base during rotation, and large-amplitude downward overturning can be achieved; and the support is connected to the bottom of the fan outer cover, the transverse size of the fan cannot be increased, the fan can achieve large-amplitude pitching angle adjustment and small size, space is saved, and the use requirement of a user is better met.

Description

Technical Field

[0001] The present application relates to the field of fans, and in particular to a fan connection structure and a blowing device. Background Art

[0002] In the hot summer, fans have become a must-have item for people to get rid of the heat. With people's demand for convenient use, lighter and more portable fans are becoming more and more popular.

[0003] In the prior art, a fan includes a fan head and a base. There are two main connection structures between the fan head and the base. One is that the end of the base is connected to the rear of the fan head, and the other is that the base extends two rods and connects to the left and right sides of the fan head. However, when the fan head of the first connection structure is turned downward, it will be restricted by the base, resulting in the fan head being unable to turn downward or only being able to be adjusted slightly. Although the fan head of the second connection structure can be turned downward significantly, it will cause the lateral volume of the fan to become larger, taking up space. Therefore, how to balance large-scale pitch angle adjustment with small volume is one of the difficulties currently faced by desktop fans. Utility Model Content

[0004] The purpose of the present application is to provide a fan connection structure and a blowing device to address the above-mentioned defects.

[0005] The present application provides a fan connection structure, comprising: a fan cover, a base shell, and a bracket for connecting the fan cover and the base shell; one end of the bracket is arranged on the base shell, and the other end of the bracket penetrates from the fan cover close to the outer wall of the base shell and is rotatably connected to the fan cover; a limiting structure for limiting the pitch adjustment angle of the fan is provided between the bracket and the fan cover.

[0006] Optionally, a first connecting block is provided at one end of the bracket facing the fan cover, a second connecting block is provided on the outer wall of the fan cover close to the base shell, and the second connecting block is provided with a first assembly position for inserting the first connecting block; a connecting shaft for mutual cooperation is provided between the first connecting block and the second connecting block.

[0007] Optionally, the second connecting block is provided with a second assembly position located on both sides of the first assembly position; the connecting shaft is composed of a fixed part, a matching part and a movable part passing through the matching part; the first connecting block is provided with a through hole on which the matching part can be installed; the fixed part is rotatably connected with the movable part, and the fixed part and the movable part are respectively arranged on the second assembly position.

[0008] Optionally, the vertical cross-sectional shapes of the fixing portion, the matching portion and the through hole are all oval; and the vertical cross-sectional shape of the movable portion is circular.

[0009] Optionally, the limiting structure is composed of a limiting block arranged on the outer surface of the first connecting block and a limiting groove arranged on the inner surface of the second connecting block, and the limiting block cooperates with the limiting groove;

[0010] Alternatively, the limiting structure is composed of a limiting block arranged on the inner surface of the second connecting block and a limiting groove arranged on the outer surface of the first connecting block, and the limiting block cooperates with the limiting groove.

[0011] Optionally, the connecting shaft is a damping shaft.

[0012] Optionally, an end cover is provided on the second assembly position, and the end cover covers the connecting shaft.

[0013] Optionally, the surface of the base shell facing the fan cover is an inclined surface; one end of the bracket facing the base shell is arranged corresponding to the inclined surface, and one end of the bracket facing the fan cover extends upward.

[0014] Optionally, a first step protrusion is provided on the surface of the bracket facing the base shell, a groove is provided on the surface of the base shell facing the fan cover, a second step protrusion matching with the first step protrusion is provided in the groove; the first step protrusion and the second step protrusion are connected by screws.

[0015] To achieve the purpose of the present application, the present application also provides a blowing device, which includes a fan connection structure as described in any one of the above items.

[0016] The beneficial effects of the embodiments of the present application are as follows: the present application sets a bracket between the fan cover and the base shell, with one end of the bracket fixed to the base shell, and the other end inserted into the bottom of the fan cover and rotatably connected to the fan cover, so that the fan head will not be restricted by the base when rotating, and can be flipped downward significantly, and the bracket is connected to the bottom of the fan cover without increasing the lateral volume of the fan. The fan can take into account both large pitch angle adjustment and small volume, saving space and better meeting the user's usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1 This is a schematic structural diagram of a fan connection structure according to a specific embodiment of the present application;

[0019] Figure 2 An exploded schematic diagram of a fan connection structure according to a specific embodiment of the present application;

[0020] Figure 3 This is a schematic structural diagram of a fan cover according to a specific embodiment of the present application;

[0021] Figure 4 This is a schematic structural diagram of a connecting shaft according to a specific embodiment of the present application;

[0022] Figure 5 For a specific embodiment of this application Figure 1 Schematic cross-sectional view at AA in the middle;

[0023] Figure 6 For a specific embodiment of this application Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 7 This is a schematic diagram of the structure of a bracket according to a specific embodiment of the present application;

[0025] Figure 8 This is a schematic structural diagram of a base shell according to a specific embodiment of the present application.

[0026] Description of the drawings: 1. Fan cover; 2. Base shell; 3. Bracket; 4. Connecting shaft; 11. Second connecting block; 21. Groove; 22. Second step protrusion; 23. Screw; 31. First connecting block; 32. First step protrusion; 41. Fixed portion; 42. Fitting portion; 43. Movable portion; 111. First assembly position; 112. Second assembly position; 113. Limiting groove; 114. End cover; 311. Through hole; 312. Limiting block. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements between them. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0029] Embodiment 1

[0030] like Figure 1 As shown, embodiment 1 of the utility model provides a fan connection structure, comprising: a fan cover 1, a base shell 2, and a bracket 3 for connecting the fan cover 1 and the base shell 2; one end of the bracket 3 is arranged on the base shell 2, and the other end of the bracket 3 penetrates from the outer wall of the fan cover 1 close to the base shell 2, and is rotatably connected to the fan cover 1; a limiting structure for limiting the pitch adjustment angle of the fan is provided between the bracket 3 and the fan cover 1.

[0031] In the above embodiment, the fan includes a fan head and a base, the fan head includes a fan cover 1 and a fan blade assembly, and the base includes a base shell 2. One end of the bracket 3 is fixedly arranged on the base shell 2, and the other end of the bracket 3 is inserted from the bottom of the fan cover 1 and is rotatably connected to the fan cover 1, so that the fan head can be pitched relative to the base when in use. Since the rotating structure is arranged at the bottom of the fan cover 1, when the fan head is flipped downward, its rear part will not be restricted by the base and can be flipped downward to a large extent, and can also be flipped upward to a large extent. A limiting structure is arranged between the bracket 3 and the fan cover 1 to limit the rotation angle of the fan head. The maximum rotation angle of the fan head is 45°, wherein the pitch angle of the fan head that can be rotated is 0°-15°, so that the fan head will not be restricted by the base and affect its horizontal rotation.

[0032] like Figure 2 and Figure 3 As shown, the surface of the base shell 2 facing the fan housing 1 is an inclined surface; one end of the bracket 3 facing the base shell 2 is arranged corresponding to the inclined surface, and one end of the bracket 3 facing the fan housing 1 extends upward. A first connecting block 31 is arranged at one end of the bracket 3 facing the fan housing 1, and a second connecting block 11 is arranged on the outer wall of the fan housing close to the base shell 2. The second connecting block 11 and the base shell 2 can be integrally formed or separately connected. A first assembly position 111 is arranged on the second connecting block 11 for inserting the first connecting block 31; a connecting shaft 4 for mutual cooperation is arranged between the first connecting block 31 and the second connecting block 11.

[0033] The bracket 3 is divided into two sections, one section extending downwardly in an inclined manner toward the base shell 2, and one section extending vertically upward toward one end of the fan cover 1, with a large fillet transition between the two sections. The first connecting block 31 is a hollow cylindrical block protruding from the middle position of the end of the bracket 3. A depression is provided in the middle of the second connecting block 11, namely the first assembly position 111. After the first connecting block 31 is inserted into the first assembly position 111, the first connecting block 31 and the second connecting block 11 are penetrated through the connecting shaft 4, so that the two form a rotational connection, and the fan cover 1 can be adjusted in pitch angle relative to the bracket 3.

[0034] like Figure 3 and Figure 4 As shown, the second connection block 11 is provided with second assembly positions 112 located on both sides of the first assembly position 111; the connection shaft 4 is composed of a fixed portion 41, a matching portion 42 and a movable portion 43 penetrating the matching portion 42; the first connection block 31 is provided with a through hole 311 for installing the matching portion 42; the fixed portion 41 is rotatably connected with the movable portion 43, and the fixed portion 41 and the movable portion 43 are respectively arranged on the second assembly position 112. Among them, the connection shaft 4 is a damping shaft.

[0035] The movable portion 43 and the matching portion 42 are designed as one body, and the movable portion 43 can rotate relative to the fixed portion 41. There are two second assembly positions 112, one of which matches the shape of the fixed portion 41, and the second assembly position 112 matches the fixed portion 41 with a regular or irregular shape, so that the fixed portion 41 can drive the second assembly position 112 to rotate, and the other matches the shape of the movable portion 43, and the part of the second assembly position 112 that matches the movable portion 43 and the movable portion 43 are both columnar. The fixed portion 41 is fixed on the second assembly position 112, and the movable portion 43 and the matching portion 42 are driven by the first connecting block 31 to rotate.

[0036] Furthermore, by providing a damping shaft, the fan head of the present application can hover at any angle within the set rotation angle range.

[0037] like Figure 2 As shown, an end cover 114 is provided on the second assembly position 112 for preventing the connecting shaft 4 from being separated.

[0038] The two ends of the connecting shaft 4 are sealed by end covers 114. Firstly, it can prevent the connecting shaft 4 from being separated from the first connecting block 31 and the second connecting block 11 during use. Secondly, it can prevent dust from entering the connecting shaft 4 and affecting the rotation of the connecting shaft 4. It can also be used to beautify the appearance of the two ends of the connecting shaft 4.

[0039] Optionally, the vertical cross-sectional shapes of the fixing portion 41 , the matching portion 42 and the through hole 311 are all oval; and the vertical cross-sectional shape of the movable portion 43 is circular.

[0040] The shapes of the fixing portion 41 and the matching portion 42 are set to be oval-shaped bodies, which can prevent the fixing portion 41 from rotating relative to the second assembly position 112 or the matching portion 42 from rotating relative to the first connecting block 31 during rotation.

[0041] like Figure 5 and Figure 6 As shown, the limiting structure is composed of a limiting block 312 arranged on the outer surface of the first connecting block 31 and a limiting groove 113 arranged on the inner surface of the second connecting block 11 , and the limiting block 312 cooperates with the limiting groove 113 .

[0042] The cooperation between the limiting block 312 and the limiting slot 113 is used to limit the pitch adjustment angle of the fan head, so as to avoid excessive adjustment of the pitch angle of the fan head, which may cause the fan to fail to blow air toward the user.

[0043] like Figure 7 and Figure 8 As shown, the surface of the bracket 3 facing the base shell 2 is provided with a first step protrusion 32, and the surface of the base shell 2 facing the fan outer cover 1 is provided with a groove 21, and the groove 21 is provided with a second step protrusion 22 matching the first step protrusion 32; the first step protrusion 32 and the second step protrusion 22 are connected by screws 23.

[0044] Since the surface of the bracket 3 facing the base shell 2 and the surface of the base shell 2 facing the fan cover 1 are both inclined surfaces, by providing the first step protrusion 32 and the second step protrusion 22 that cooperate with each other, it is possible to facilitate the alignment between the bracket 3 and the base shell 2, so that the screw 23 can be installed vertically, which is convenient for assembling the fan. In addition, the first step protrusion 32 and the second step protrusion 22 can act as reinforcing ribs, which can make the connection between the bracket 3 and the base shell 2 more stable. In other embodiments, the bracket 3 and the base shell 2 can also be connected by means of snap-fitting, plug-in, etc., so as to achieve a fixed connection between the bracket 3 and the base shell 2.

[0045] In the above embodiment, the number of screws 23 is 3. It can also be other numbers, such as 1, 2, 4, 5, 6, etc., so as to ensure stable connection and economical saving.

[0046] Embodiment 2

[0047] Embodiment 2 of the present invention provides a fan connection structure, which differs from Embodiment 1 in that the limiting structure is composed of a limiting block arranged on the inner surface of the second connection block and a limiting groove arranged on the outer surface of the first connection block, and the limiting block cooperates with the limiting groove.

[0048] The cooperation between the limit block and the limit slot is used to limit the pitch adjustment angle of the fan head, so as to avoid excessive adjustment of the pitch angle of the fan head, which may cause the fan to fail to blow air towards the user.

[0049] Embodiment 3

[0050] Embodiment 3 of the present application provides a blowing device, including the fan connection structure in Embodiment 1 and Embodiment 2.

[0051] It should be noted that the blowing device in this embodiment includes (but is not limited to): bladeless fans, desktop fans, floor fans, spherical fans, neck fans, handheld fans, industrial fans, air conditioners, hair dryers and other products that need to promote air circulation. The fan connection structure in the first embodiment and the second embodiment is assembled on the above products.

[0052] This embodiment uses a bracket to connect the fan cover and the base shell. The fan head will not be restricted by the base when rotating, and can be flipped downward significantly without increasing the lateral volume of the fan. The fan can take into account large-scale pitch angle adjustment and small volume, saving space and better meeting the user's usage needs.

[0053] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not intended to be additional limitations on the content of the present application. The purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the present invention; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the present application.

Claims

1. A fan connection structure, characterized in that: include: A fan cover, a base shell, and a bracket for connecting the fan cover and the base shell; One end of the bracket is arranged on the base shell, and the other end of the bracket penetrates from the outer wall of the fan cover close to the base shell and is rotatably connected to the fan cover; a limiting structure for limiting the pitch adjustment angle of the fan is provided between the bracket and the fan cover.

2. The fan connection structure according to claim 1, characterized in that: A first connecting block is provided at one end of the bracket facing the fan outer cover, a second connecting block is provided on the outer wall of the fan outer cover close to the base shell, and a first assembly position for inserting the first connecting block is provided on the second connecting block; a connecting shaft for mutual cooperation is provided between the first connecting block and the second connecting block.

3. The fan connection structure according to claim 2, characterized in that: The second connecting block is provided with second assembly positions located on both sides of the first assembly position; the connecting shaft is composed of a fixed part, a matching part and a movable part passing through the matching part; the first connecting block is provided with a through hole for installing the matching part; the fixed part is rotatably connected with the movable part, and the fixed part and the movable part are respectively arranged on the second assembly position.

4. The fan connection structure according to claim 3, characterized in that: The vertical cross-sectional shapes of the fixing portion, the matching portion and the through hole are all oval; the vertical cross-sectional shape of the movable portion is circular.

5. The fan connection structure according to claim 2 or 3, characterized in that: The limiting structure is composed of a limiting block arranged on the outer surface of the first connecting block and a limiting groove arranged on the inner surface of the second connecting block, and the limiting block cooperates with the limiting groove; Alternatively, the limiting structure is composed of a limiting block arranged on the inner surface of the second connecting block and a limiting groove arranged on the outer surface of the first connecting block, and the limiting block cooperates with the limiting groove.

6. The fan connection structure according to claim 2 or 3, characterized in that: The connecting shaft is a damping shaft.

7. The fan connection structure according to claim 3, characterized in that: An end cover is provided on the second assembly position, and the end cover covers the connecting shaft.

8. The fan connection structure according to claim 1, characterized in that: The surface of the base shell facing the fan outer cover is an inclined surface; one end of the bracket facing the base shell is arranged corresponding to the inclined surface, and one end of the bracket facing the fan outer cover extends upward.

9. The fan connection structure according to claim 1, characterized in that: A first step protrusion is provided on the surface of the bracket facing the base shell, and a groove is provided on the surface of the base shell facing the fan cover. A second step protrusion matching with the first step protrusion is provided in the groove; the first step protrusion and the second step protrusion are connected by screws.

10. A blowing device, characterized in that: It comprises the fan connection structure as claimed in any one of claims 1 to 9.

Images