Fan

Abstract

The utility model discloses a fan which comprises a shell, a first driving assembly and a fan assembly. The first driving assembly drives the shell to swing up and down, and the output end of the first driving assembly is located in the center of the shell. The fan assemblies are arranged in the shell, the number of the fan assemblies is two, the two fan assemblies are symmetrically arranged relative to the center of the shell, each fan assembly comprises a vertically-arranged impeller and a first motor driving the impeller to rotate, the impeller is rotationally connected with the shell, and the first motor is located at the upper end or the lower end of the impeller. The two fan assemblies are symmetrically arranged in the shell relative to the center of the shell, so that the stress balance of the upper end and the lower end of the shell is guaranteed, further, the output end of the first driving assembly is connected to the center of the shell for matching, the shell swings up and down more stably, the service life of the fan is prolonged, and the service life of the fan is prolonged. And the two first motors and the two impellers can use the same model, so that assembly and production are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of fans, and in particular relates to a fan. Background Art

[0002] With the development of economy and the progress of society, various electrical appliances have entered people's lives, among which fans as a kind of air supply device have been widely used in people's lives. Among them, there is a fan with dual fan components on the market, which is equipped with two fan components on the casing to supply air, and can improve the air supply efficiency. The fan component mainly includes an impeller and a motor, and the motors on the two fan components are arranged at the same end, that is, arranged at the upper end or the lower end of the impeller to drive the impeller to rotate. However, such an arrangement will cause the center of gravity to be at the upper end or the lower end of the casing, and the fan will be unstable when shaking its head up and down, and the two motors and the two impellers need to be matched with forward and reverse models respectively, which is not conducive to assembly and production. Summary of the invention

[0003] The purpose of the utility model is to provide a fan which can solve the above problems.

[0004] To achieve the above-mentioned purpose, the present invention provides a fan, comprising:

[0005] case;

[0006] A first driving assembly drives the housing to swing up and down, wherein an output end of the first driving assembly is located at the center of the housing; and

[0007] A fan assembly is arranged inside the shell. Two fan assemblies are provided. The two fan assemblies are symmetrically arranged relative to the center of the shell. The fan assembly includes a vertically arranged impeller and a first motor that drives the impeller to rotate. The impeller is rotatably connected to the shell. The first motor is located at the upper end or the lower end of the impeller.

[0008] Optionally, a limiting member is further included to limit the impeller from sliding downward.

[0009] Optionally, the limiting member is a retaining spring, which is mounted on the shaft of the first motor and abuts against the impeller.

[0010] Optionally, the first driving assembly includes a mounting shell, a wind outlet penetrating the shell is vertically opened at the center of the shell, a connecting wall is provided on the side wall of the wind outlet, and the mounting shell is rotatably connected to the connecting wall.

[0011] Optionally, the first driving assembly further comprises a second motor mounted on the mounting shell, a gear is provided on the shaft of the second motor, and one of the connecting walls is provided with an arc-shaped rack, and the gear is meshingly connected with the arc-shaped rack.

[0012] Optionally, a second driving assembly is further included, and the second driving assembly drives the shell to swing left and right.

[0013] Optionally, the second driving component includes:

[0014] A connecting shell, located below the housing and fixedly connected to the mounting shell;

[0015] a third motor, disposed inside the connecting shell and fixedly connected to the connecting shell; and

[0016] The support base is rotatably connected to the connecting shell, and the shaft of the third motor is fixedly connected to the support base.

[0017] Optionally, an air inlet is provided at the rear end of the shell, the air inlet corresponds to the impeller, and a detachable grid plate is provided on the air inlet.

[0018] Optionally, a filter corresponding to the air inlet is further provided inside the shell.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: by arranging the two fan components inside the shell symmetrically relative to the center of the shell, the force balance at the upper and lower ends of the shell is ensured, and further, by connecting the output end of the first drive component to the center of the shell, the shell can swing up and down more smoothly, which is beneficial to improving the service life of the fan, and can make the two first motors and the two impellers use the same model, which is beneficial to assembly and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is an explosion diagram of the utility model.

[0022] Figure 2 It is a top view of the utility model.

[0023] Figure 3 For along Figure 2 Sectional view along line AA.

[0024] Figure 4 For Figure 3 A partial enlarged view of area A is shown.

[0025] Figure 5It is a three-dimensional diagram of the utility model.

[0026] In the figure: shell 100, air outlet 110, connecting wall 111, arc-shaped rack 112, air inlet 120, grid plate 130, filter 140, first drive assembly 200, mounting shell 210, second motor 220, gear 221, fan assembly 300, impeller 310, first motor 320, second drive assembly 400, connecting shell 410, third motor 420, support base 430. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the embodiments of the present invention, it should be understood that if there are directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, inside, outside, etc., the directions or positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] In the embodiments of the present invention, unless otherwise clearly specified and limited, if there are terms such as "installed", "connected", "connected", "fixed", etc., they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0031] like Figures 1 to 5As shown, an embodiment of the utility model provides a fan, including a housing 100 , a first driving assembly 200 , a fan assembly 300 , a second driving assembly 400 and a limiting member 500 .

[0032] Among them, the first driving component 200 drives the shell 100 to swing up and down, that is, to shake its head up and down, wherein the output end of the first driving component 200 is located at the center of the shell 100; the second driving component 400 drives the shell 100 to swing left and right, that is, to shake its head left and right, so as to meet the user's needs for adjusting different angles.

[0033] Furthermore, the fan assembly 300 is disposed inside the shell 100, wherein two fan assemblies 300 are provided, and the two fan assemblies 300 are symmetrically arranged relative to the center of the shell 100. Specifically, the fan assembly 300 includes a vertically arranged impeller 310 and a first motor 320 that drives the impeller 310 to rotate, the impeller 310 is rotatably connected to the shell 100, and the first motor 320 is located at the upper end or the lower end of the impeller 310.

[0034] Furthermore, the limiting member 500 is used to limit the impeller 310 from sliding downward to ensure the stability of the impeller 310 .

[0035] It should be understood that the front end of the housing 100 is provided with an air outlet corresponding to the impeller 310, the first motor 320 drives the impeller 310 to rotate, and the impeller 310 drives the wind flow to be discharged from the housing 100 through the air outlet; The fan 100 is symmetrical relative to the center of the shell 100, that is, the first motor 320 on one group of the fan assemblies 300 is located at the upper end of the corresponding impeller 310, while the first motor 320 of the other group of the fan assemblies 300 is located at the lower end of the corresponding impeller 310, so as to ensure that the forces at the upper and lower ends of the shell 100 are balanced. Furthermore, by connecting the output end of the first drive assembly 200 to the center of the shell 100 for cooperation, the shell 100 can swing up and down more smoothly, and the service life of the fan can be improved. Furthermore, the two first motors 320 are respectively arranged on the corresponding impellers 310 up and down, so that the two first motors 320 and the two impellers 310 can use the same model, which is conducive to assembly and production, and solves the problem that the two first motors 320 on the existing double-impeder fan are arranged at the same end, and both the forward-rotating first motor 320 and the reverse-rotating first motor 320 need to be used, which is not conducive to assembly and production.

[0036] In some specific embodiments, the limiting member 500 is a retaining spring, which is installed on the shaft of the first motor 320 and abuts against the impeller 310. Specifically, the shaft of the first motor 320 extends into the interior of the impeller 310 from the upper end or the lower end of the impeller 310, and since the first motors 320 on the two impellers 310 are arranged up and down, the retaining spring 500 on the shaft of the first motor 320 at the upper end needs to be arranged inside the impeller 310, while the retaining spring 500 on the shaft of the first motor 320 at the lower end needs to be arranged at the outer end of the impeller 310, thereby achieving the problem of limiting the impeller 310 from sliding down when working.

[0037] Of course, the limiting member 500 can also be a screw, that is, a threaded hole is opened on one side of the connection between the impeller 310 and the first motor 320, and the screw is assembled on the threaded hole. The end of the tightened screw can be close to the shaft of the first motor 320, so as to fix the impeller 310 and the first motor 320.

[0038] In one embodiment, the first driving component 200 includes a mounting shell 210, and an air vent 110 is vertically opened at the center of the shell 100 and penetrates the shell 100. When the air outlet on the shell 100 exhausts air, the air vent 110 can provide negative pressure to improve the exhaust efficiency. Furthermore, the side wall of the air vent 110 is provided with a connecting wall 111. Specifically, the axis of the connecting wall 111 coincides with the horizontal axis of the shell 100. Furthermore, the mounting shell 210 is rotatably connected to the connecting wall 111, so as to realize the up and down swing of the shell 100.

[0039] In one embodiment, the first driving assembly 200 also includes a second motor 220, and the second motor 220 is mounted on the mounting shell 210, specifically, fixed inside the mounting shell 210, and a gear 221 is provided on the shaft of the second motor 220, wherein one of the connecting walls 111 is provided with an arc-shaped rack 112, and the gear 221 is meshingly connected with the arc-shaped rack 112, that is, the gear 221 is driven by the second motor 220 to drive the arc-shaped gear 112, thereby controlling the shell 100 to swing up and down, and the up and down swing angle of the shell 100 is 0 to 90 degrees.

[0040] In some specific embodiments, in order to realize that the second driving component 400 can drive the shell 100 to rotate left and right, specifically, the second driving component 400 includes a connecting shell 410, a third motor 420 and a support seat 430, wherein the connecting shell 410 is located below the shell 100 and is fixedly connected to the mounting shell 210; the third motor 420 is arranged inside the connecting shell 410 and is fixedly connected to the connecting shell 410; the support seat 430 is rotatably connected to the connecting shell 410 through a bearing, specifically, the support seat 430 includes a base and a support rod, wherein the bearing is fixed at the top end of the support rod, and the base is fixed at the bottom end of the support rod; the shaft of the third motor 420 is fixedly connected to the support seat 430, that is, the connecting shell 410 is driven to rotate on the support rod by the third motor 420 to realize the left and right rotation of the shell 100.

[0041] Of course, the second driving component 400 can also be a combination of a bottom shell, the third motor 420 and other accessories. Specifically, the bottom shell includes an upper bottom shell and a lower bottom shell, the upper bottom shell is rotatably connected to the lower bottom shell, the third motor 420 is fixed on the lower bottom shell, and the mounting shell 210 is fixed on the upper bottom shell. The third motor 420 drives the upper bottom shell to rotate, thereby realizing the left and right rotation of the shell 100, which is called a desktop fan on the market.

[0042] In one embodiment, an air inlet 120 is provided at the rear end of the housing 100 , and the air inlet 120 corresponds to the impeller 310 . A detachable grid plate 130 is provided on the air inlet 120 to facilitate removal of the impeller 310 for cleaning.

[0043] In one embodiment, a filter 140 corresponding to the air inlet 120 is further disposed inside the housing 100 to filter external air and prevent dust from accumulating on the impeller 310 .

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fan, characterized in that: include: case; A first driving assembly drives the housing to swing up and down, wherein an output end of the first driving assembly is located at the center of the housing; as well as A fan assembly is arranged inside the shell. Two fan assemblies are provided. The two fan assemblies are symmetrically arranged relative to the center of the shell. The fan assembly includes a vertically arranged impeller and a first motor that drives the impeller to rotate. The impeller is rotatably connected to the shell. The first motor is located at the upper end or the lower end of the impeller.

2. A fan according to claim 1, characterized in that: It also includes a limiting member for limiting the downward movement of the impeller.

3. A fan according to claim 2, characterized in that: The limiting member is a retaining spring, which is mounted on the shaft of the first motor and abuts against the impeller.

4. A fan according to claim 1, characterized in that: The first driving assembly comprises: The installation shell has an air outlet vertically opened at the center of the shell and passing through the shell, and the side wall of the air outlet is provided with a connecting wall, and the installation shell is rotatably connected to the connecting wall.

5. A fan according to claim 4, characterized in that: The first drive assembly also includes: The second motor is mounted on the mounting shell, a gear is provided on the shaft of the second motor, one of the connecting walls is provided with an arc-shaped rack, and the gear is meshed and connected with the arc-shaped rack.

6. A fan according to claim 4, characterized in that: Also includes: A second driving assembly drives the shell to swing left and right.

7. A fan according to claim 6, characterized in that: The second driving assembly comprises: A connecting shell, located below the housing and fixedly connected to the mounting shell; a third motor, disposed inside the connecting shell and fixedly connected to the connecting shell; and The support base is rotatably connected to the connecting shell, and the shaft of the third motor is fixedly connected to the support base.

8. A fan according to any one of claims 1 to 7, characterized in that: An air inlet is arranged at the rear end of the shell, the air inlet corresponds to the impeller, and a detachable grid plate is arranged on the air inlet.

9. A fan according to claim 8, characterized in that: A filter corresponding to the air inlet is also provided inside the shell.

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