Universal fan

Abstract

The utility model relates to a universal fan which comprises a base, a fan head and a connecting rod. Universal ball joints are arranged at the two ends of the connecting rod, the base and the fan head are rotationally connected with the connecting rod through the two universal ball joints respectively, a wiring channel penetrating through the universal ball joints at the two ends of the connecting rod is formed in the connecting rod, and the connecting rod comprises two supporting rods detachably connected with each other; an air outlet duct is arranged at the front end of the fan head, and a protective net is arranged in the air outlet duct; the fan head is simple in overall structure, various angles and positions of the fan head can be adjusted through the connecting rod and the two universal ball joints, and great convenience is brought to use and operation of a user.

Description

Technical Field

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

[0002] Fans are commonly used electrical appliances in people's lives. For offices and other office places, small desktop fans are very popular due to limited space. Among the existing desktop fans, some can only be adjusted in pitch, while others can only be adjusted left and right, but none of them can be properly adjusted according to the user's multi-angle requirements, and the position of the fan head cannot be changed, and can only be rotated in the original position, which makes the use more limited. Utility Model Content

[0003] The utility model aims to provide a universal fan to solve the above problems in view of the shortcomings of the prior art.

[0004] In order to achieve the above requirements, the technical solution adopted by the utility model to solve its technical problems is:

[0005] A universal fan is provided, comprising a base, a fan head and a connecting rod; universal ball joints are provided at both ends of the connecting rod, the base and the fan head are rotatably connected to the connecting rod through the two universal ball joints respectively, a wiring channel for the universal ball joints passing through both ends of the connecting rod is provided inside the connecting rod, and the connecting rod comprises two supporting rods detachably connected to each other; an air outlet duct is provided at the front end of the fan head, and a protective net is provided inside the air outlet duct.

[0006] The universal fan of the utility model comprises two universal ball joints respectively connected integrally with the two support rods.

[0007] In the universal fan of the utility model, the diameter of the connecting rod increases gradually from bottom to top.

[0008] In the universal fan of the utility model, the diameter of the universal ball joint at the lower end of the connecting rod is larger than the diameter of the universal ball joint at the upper end.

[0009] The universal fan of the utility model, wherein the fan head and the base are respectively connected with two universal ball joints for damping rotation.

[0010] The universal fan described in the utility model, wherein the fan head includes a rear shell with an opening facing forward, a motor blade unit arranged in the rear shell, and the protective net arranged on the front side of the rear shell; an annular cofferdam is provided around the opening of the rear shell at the front end, and the inner cavity of the annular cofferdam forms the air outlet duct.

[0011] In the universal fan of the utility model, the annular cofferdam is detachably connected to the rear shell.

[0012] The universal fan of the utility model, wherein the rear shell is further provided with a shielding member covering the wiring channel.

[0013] The utility model describes a universal fan, wherein the lower end of the inner side wall of the rear shell is provided with an extension portion extending downwardly concave, the universal ball joint located above the connecting rod is arranged in the inner cavity of the extension portion, the lower end of the extension portion is provided with a through hole for the connecting rod to pass through, the diameter of the through hole is smaller than the diameter of the universal ball joint adjacent to it, a pressure plate for pressing the universal ball joint onto the opening edge of the through hole is detachably provided in the inner cavity, and the shielding member cover is arranged on the pressure plate.

[0014] In the universal fan of the utility model, a recessed portion is provided on the upper surface of the base, and the universal ball joint located at the lower end of the connecting rod is rotatably arranged on the recessed portion.

[0015] The utility model has the beneficial effects of simple overall structure and convenient operation, and can realize adjustment of the fan head to many angles and positions through the connecting rod and two universal ball joints, which greatly facilitates the operation of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0017] Figure 1 It is a front side perspective stereogram of the overall structure of the universal fan of the utility model.

[0018] Figure 2 It is a front side perspective stereogram of the overall structure of the universal fan of the utility model.

[0019] Figure 3 It is a three-dimensional diagram of the overall structure of the universal fan of the utility model from the rear side perspective.

[0020] Figure 4 It is a longitudinal sectional view of the universal fan of the utility model.

[0021] Figure 5 yes Figure 4 A magnified view of the local structure. DETAILED DESCRIPTION

[0022] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0025] Moreover, the terms "up, down, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0027] The universal fan of the preferred embodiment of the utility model is as follows Figure 1-5As shown, it includes a base 10, a fan head 20 and a connecting rod 30. Universal ball joints 40 are provided at both ends of the connecting rod 30. The base 10 and the fan head 20 are rotatably connected to the connecting rod 30 through two universal ball joints 40 respectively. A wiring channel 50 is provided in the connecting rod 30 for passing through the universal ball joints 40 at both ends. The connecting rod 30 includes two supporting rods 31 that are detachably connected to each other, and the two supporting rods 31 are coaxially threaded. An air outlet duct 60 is provided at the front end of the fan head 20, and a protective net 23 is provided in the air outlet duct 60. The fan has a simple overall structure and is easy to operate. The fan head 20 can be adjusted to a variety of angles and positions through the connecting rod and two universal ball joints 40, which greatly facilitates the user's operation. Moreover, by rotating the universal ball joint 40 at the upper end of the connecting rod 30, the duct opening of the fan head 20 can be rotated upward, and the connecting rod 30 can be adjusted to tilt forward. At this time, the cavity formed by the duct and the protective net 23 can be used as a storage cavity. When the user is not using the fan, small objects can be temporarily placed there, which plays a multi-purpose role and further enriches the functionality and adaptability of the product.

[0028] In this embodiment, the two universal ball joints 40 are respectively connected to the two support rods 31 in one piece, so as to improve the strength of the structure and reduce the number of assembly steps.

[0029] In this embodiment, the diameter of the connecting rod 30 gradually increases from bottom to top, so as to strengthen the strength of the force-bearing structure of the connecting rod 30 and also beautify the appearance.

[0030] In this embodiment, the diameter of the universal ball joint 40 at the lower end of the connecting rod 30 is larger than the diameter of the universal ball joint 40 at the upper end, so as to prevent mistakes and facilitate identification. At the same time, it also increases the friction between the universal ball joint 40 at the lower end of the connecting rod 30 and the base 10 to avoid unstable positioning of the connecting rod 30 and the fan head 20 due to too small a force-bearing area. In addition, the diameter of the universal fan head 20 at the upper end of the connecting rod 30 is smaller, which can reduce the space occupied on the fan head 20.

[0031] In this embodiment, the fan head 20 and the base 10 are respectively connected to two universal ball joints 40 for damped rotation to ensure the positioning effect of the connecting rod 30 and the fan head 20, so that the user can adjust the fan head 20 to any position within the adjustable range.

[0032] In this embodiment, the fan head 20 includes a rear shell 21 with an opening facing forward, a motor blade unit 22 disposed in the rear shell 21, and a protective net 23 disposed on the front side of the rear shell 21; the front end of the rear shell 21 is provided with an annular cofferdam 80 around its opening, and the inner cavity of the annular cofferdam 80 forms an air outlet duct 60. By adding the annular cofferdam 80 to form the air outlet duct 60, the flow rate of the blown air flow can be increased, further improving the user's experience. In addition, when the fan is not in use, after adjusting the air outlet duct 60 to face upward, the annular cofferdam 80 can be used to store small objects that are temporarily placed.

[0033] In this embodiment, the annular cofferdam 80 is detachably connected to the rear shell 21, which is convenient for separate processing and manufacturing, as well as subsequent maintenance and replacement.

[0034] In this embodiment, a shielding member 70 is further provided in the rear shell 21 and covers the wiring channel 50 to shield the wires passing through the wiring channel 50, which not only plays a protective role but also further improves the aesthetics of the product.

[0035] In this embodiment, the lower end of the inner wall of the rear shell 21 is provided with an extension portion 211 extending downwardly, and the universal ball joint 40 located above the connecting rod 30 is arranged in the inner cavity 2111 of the extension portion 211, and the lower end of the extension portion 211 is provided with a through hole 2110 for the connecting rod 30 to pass through, and the diameter of the through hole 2110 is smaller than the diameter of the universal ball joint adjacent thereto, and a detachable pressure plate 90 is provided in the inner cavity 2111 for pressing the universal ball joint 40 on the opening edge of the through hole 2110, and further, an annular positioning rib 100 adapted to the outer diameter of the universal ball joint 40 is also provided on the lower surface of the pressure plate 90, which can enhance the positioning effect of the universal ball joint 40 and ensure its rotation stability, thereby allowing the universal ball head to stably rotate inside the inner cavity 2111. The shielding member 70 is covered on the pressing plate 90 so that the pressing plate 90 and the shielding member 70 can be fixed on the rear housing 21 by the same fixing screws.

[0036] In this embodiment, a recessed portion 101 is provided on the upper surface of the base 10, and the universal ball joint located at the lower end of the connecting rod 30 is rotatably set on the recessed portion 101. Specifically, the base 10 includes a bottom plate 11 and a mask 12 covered on the bottom plate 11, and the recessed portion is located on the upper surface of the mask. A battery 110 and a control panel 120 are provided inside the mask 12. Accordingly, a switch button 130 is provided at the front end of the upper surface of the mask 12 to trigger the switch body 1200 on the control panel. The universal ball joint 40 at the lower end of the connecting rod 30 is pressed against the inner wall of the mask 12 through another pressure plate 140. Correspondingly, a window 121 is provided on the mask 12 for the connecting rod 30 and part of the universal ball joint 40 at its lower end to pass through. The window is located on the recessed portion. After the pressure plate 90 is installed in place, the universal ball joint 40 at the lower end of the connecting rod 30 is pressed against the edge of the window 121, thereby achieving the damped rotation of the universal ball joint 40. Furthermore, in order to enhance the effect of damped rotation, rubber rings 150 that fit with the outer wall of the universal ball joint 40 are provided on the pressure plates 90 at the upper and lower ends of the connecting rod 30 to increase friction.

[0037] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A universal fan, characterized in that: It includes a base, a fan head and a connecting rod; both ends of the connecting rod are provided with universal ball joints, the base and the fan head are rotatably connected to the connecting rod through the two universal ball joints respectively, the connecting rod is provided with a wiring channel for the universal ball joint running through both ends thereof, the connecting rod includes two supporting rods detachably connected to each other; the front end of the fan head is provided with an air outlet duct, and a protective net is provided in the air outlet duct.

2. The universal fan according to claim 1, characterized in that: The two universal ball joints are respectively connected integrally with the two support rods.

3. The universal fan according to claim 1, characterized in that: The diameter of the connecting rod increases gradually from bottom to top.

4. The universal fan according to claim 1, characterized in that: The diameter of the universal ball joint at the lower end of the connecting rod is greater than the diameter of the universal ball joint at the upper end.

5. The universal fan according to any one of claims 1 to 4, characterized in that: The fan head and the base are respectively connected to the two universal ball joints for damping rotation.

6. The universal fan according to claim 1, characterized in that: The fan head includes a rear shell with an opening facing forward, a motor blade unit arranged in the rear shell, and the protective net arranged on the front side of the rear shell; a ring cofferdam is arranged around the opening at the front end of the rear shell, and the inner cavity of the ring cofferdam forms the air outlet duct.

7. The universal fan according to claim 6, characterized in that: The annular cofferdam is detachably connected to the rear shell.

8. The universal fan according to claim 6, characterized in that: The rear shell is also provided with a shielding member covering the wiring channel.

9. The universal fan according to claim 8, characterized in that: An extension portion extending downwardly is provided at the lower end of the inner side wall of the rear shell, and the universal ball joint located above the connecting rod is arranged in the inner cavity of the extension portion. A through hole is provided at the lower end of the extension portion for the connecting rod to pass through, and the diameter of the through hole is smaller than the diameter of the universal ball joint adjacent thereto. A pressure plate for pressing the universal ball joint onto the opening edge of the through hole is detachably provided in the inner cavity, and the shielding member cover is arranged on the pressure plate.

10. The universal fan according to claim 1, characterized in that: A recessed portion is provided on the upper surface of the base, and the universal ball joint located at the lower end of the connecting rod is rotatably arranged on the recessed portion.

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