Double-head fan

Abstract

The utility model provides a double-head fan, which relates to the technical field of fans and comprises a shell, and a threaded rod is rotatably connected between the inner surface walls of the shell. During use, a hand wheel is rotated to drive a threaded rod to rotate forwards and backwards, then a moving block is controlled to move forwards and backwards on the surface of the moving block, and two mounting blocks are pushed and pulled under the matching action of a first connecting block, a first U-shaped seat, a connecting rod, a second connecting block and a second U-shaped seat; the two fan bodies can be unfolded for use or contracted to the inner side of the shell for storage according to requirements, the two fan bodies are unfolded and stored by rotating a hand wheel to drive a threaded rod to rotate correspondingly and controlling a moving block to move back and forth on the surface of the threaded rod, and therefore in the use process of the two fan bodies after being unfolded, the two fan bodies are not prone to falling off. And the two fan main bodies are difficult to push by external force, so that the two fan main bodies can be kept stable when extending outwards to work, and the using effect of the double-head fan is improved.

Description

Technical Field

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

[0002] A fan is a device that can increase the air circulation speed by rotating fan blades, and take away the temperature on the surface of an object through the flowing air. It is usually driven by electricity. The fan blades inside are rotated after being powered on, converting mechanical energy into wind energy, thus forming natural wind to achieve a cooling effect. A double-headed fan is a fan that has two groups of fan bodies at the same time, which can increase the cooling effect of the fan.

[0003] In the prior art, such as a double-headed fan in Chinese Patent CN218817149U, it includes a fan housing and fan bodies. Fan bodies are respectively arranged on both sides of the fan housing. A reset hinge is installed between the fan housing and the fan bodies. A storage groove is formed on the side surface of the fan housing close to the fan bodies. For this double-headed fan, the fan body can be pushed to rotate in the direction close to the inside of the storage groove. When the fan body drives the fixed slot to move to the bottom position of the fixed plug, at this time, the magnet in the fixed slot can generate an attractive force on the fixed plug. The fixed plug can move downward under the attraction of the magnet. After the fixed plug moves downward into the fixed slot, the position of the fan body can be fixed, so as to fix the position of the fan body.

[0004] In the above patent, through the combined use of the fixed plug and the fixed slot, when the two fan bodies are stored, they can be rotatably connected to the housing through a hinge and stored inside the housing, and are fixed by the fixed plug, having a good storage effect. However, during the use of the two fan bodies, since they are connected to the housing through a hinge, the fan bodies are prone to shaking and moving into the housing due to external force collision or the reaction force generated by the fan, which further affects the stability of the two fan bodies when extending outward for work, reducing the use effect of the double-headed fan. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problem in the prior art that the fan body and the housing are connected by a hinge, and there is no support structure behind the fan body, which easily causes it to shake and move into the housing during work, further affecting the stability of the two fan bodies when extending outward for work and reducing the use effect of the double-headed fan, and to propose a double-headed fan.

[0006] To achieve the above object, the present utility model adopts the following technical solutions: A dual-head fan, comprising: a housing, between the inner surfaces of the housing, a threaded rod is rotatably connected, a moving block is threadedly and rotatably connected to the outer surface of the threaded rod, first connection blocks are respectively fixedly connected to the outer surfaces on both sides of the moving block, first U-shaped seats are rotatably connected to the outer surfaces of the two first connection blocks, connecting rods are fixedly connected to the outer surfaces of the two first U-shaped seats, second connection blocks are fixedly connected to the outer surfaces of the two connecting rods at positions away from the two first U-shaped seats, fixing rods are symmetrically and fixedly connected to the inner surface of the housing, and mounting components are arranged on the outer surfaces of the two fixing rods; Mounting components, the mounting components are provided in two groups, the two groups of mounting components are respectively arranged on both sides of the housing, the mounting component includes a mounting block, the mounting block is arranged on the outer surface of the fixing rod, the inner surface of the mounting block is rotatably connected to the outer surface of the fixing rod, a ventilation groove is opened on the outer surface of the mounting block, a fan main body is arranged on the inner surface of the ventilation groove, a second U-shaped seat is fixedly connected to the rear surface of the mounting block, and the inner surface of the second U-shaped seat is rotatably connected to the outer surface of the second connection block.

[0007] Preferably, a storage battery is arranged at the inner bottom of the housing, and the storage battery and the fan main body are provided in a matching manner.

[0008] Preferably, a fixing block is fixedly connected to the outer surface of the threaded rod near the middle position, and the fixing block and the moving block are provided in a matching manner.

[0009] Preferably, a sliding rod is fixedly connected to the inner surface of the housing, and the sliding rod is located above the moving block.

[0010] Preferably, a slider is fixedly connected to the top of the moving block, and the outer surface of the sliding rod is slidably connected to the inner surface of the slider.

[0011] Preferably, the outer surface of the threaded rod near the rear surface rotatably penetrates through the rear surface of the housing and extends outward, and a handwheel is fixedly connected to the rear end surface of the threaded rod.

[0012] Preferably, the outer surface of the mounting block near one side of the fixing rod is arc-shaped, the outer surface of the mounting block away from the fixing rod is arc-shaped, and the mounting block and the housing are provided in a matching manner.

[0013] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0014] 1. In the present utility model, during use, by rotating the handwheel, the threaded rod is driven to rotate forward and backward, thereby controlling the forward and backward movement of the moving block on its surface. Through the cooperation of the first connecting block, the first U-shaped seat, the connecting rod, the second connecting block, and the second U-shaped seat, the two mounting blocks are pushed and pulled. The two fan bodies can be unfolded for use according to requirements or retracted inside the housing for storage. The unfolding and storage of the two fan bodies are achieved by rotating the handwheel to drive the corresponding rotation of the threaded rod and controlling the forward and backward movement of the moving block on the surface of the threaded rod. Therefore, during the use process after the two fan bodies are unfolded, it is difficult for external forces to push the two fan bodies, enabling them to remain stable when extending outward for work and improving the use effect of the dual-head fan.

[0015] 2. In the present utility model, during use, a fixed block is fixedly arranged on the outer surface of the threaded rod near the middle position. The fixed block can limit the moving block. When the moving block is blocked by the fixed block, the two mounting blocks are perpendicular to both sides of the housing, and the two mounting blocks are parallel to each other, playing a positioning role and further improving the use effect of the dual-head fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of a dual-head fan proposed by the present utility model;

[0017] Figure 2 is a schematic structural diagram of the mounting assembly of a dual-head fan proposed by the present utility model;

[0018] Figure 3 is a partial structural diagram of a dual-head fan proposed by the present utility model;

[0019] Figure 4 is a schematic structural diagram of the connecting rod of a dual-head fan proposed by the present utility model.

[0020] Legend: 1. Housing; 2. Threaded rod; 3. Moving block; 4. First connecting block; 5. Fixed block; 6. Slide bar; 7. Slide block; 8. Mounting assembly; 801. Mounting block; 802. Second U-shaped seat; 803. Fan body; 9. Connecting rod; 10. First U-shaped seat; 11. Second connecting block; 12. Handwheel; 13. Battery; 14. Fixed rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the present utility model will be further described below in conjunction with the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0023] Embodiment 1, as Figures 1 - 4 shown, the present utility model provides a double-headed fan, comprising: a housing 1, a threaded rod 2 is rotatably connected between the inner surfaces of the housing 1, a moving block 3 is threadedly rotatably connected to the outer surface of the threaded rod 2, first connecting blocks 4 are respectively fixedly connected to the outer surfaces on both sides of the moving block 3, first U-shaped seats 10 are rotatably connected to the outer surfaces of the two first connecting blocks 4, connecting rods 9 are fixedly connected to the outer surfaces of the two first U-shaped seats 10, second connecting blocks 11 are fixedly connected to the outer surfaces of the two connecting rods 9 at positions far from the two first U-shaped seats 10, fixing rods 14 are symmetrically and fixedly connected to the inner surface of the housing 1, and mounting assemblies 8 are arranged on the outer surfaces of the two fixing rods 14; mounting assemblies 8, the mounting assemblies 8 are provided in two groups, the two groups of mounting assemblies 8 are respectively arranged on both sides of the housing 1, the mounting assembly 8 comprises a mounting block 801, the mounting block 801 is arranged on the outer surface of the fixing rod 14, the inner surface of the mounting block 801 is rotatably connected to the outer surface of the fixing rod 14, a ventilation groove is formed in the outer surface of the mounting block 801, a fan body 803 is arranged on the inner surface of the ventilation groove, a second U-shaped seat 802 is fixedly connected to the rear surface of the mounting block 801, the inner surface of the second U-shaped seat 802 is rotatably connected to the outer surface of the second connecting block 11, a storage battery 13 is arranged at the inner bottom of the housing 1, the storage battery 13 and the fan body 803 are provided in a matching manner, the outer surface of the threaded rod 2 rotatably penetrates through the rear surface of the housing 1 near the rear surface and extends outward, a hand wheel 12 is fixedly connected to the rear end surface of the threaded rod 2, the outer surface of the mounting block 801 is arc-shaped near one side of the fixing rod 14, the outer surface of the mounting block 801 is arc-shaped far from one side of the fixing rod 14, and the mounting block 801 and the housing 1 are provided in a matching manner.

[0024] The effect achieved by the entire Embodiment 1 is that when the double-headed fan is in use and the handwheel 12 is rotated forward and backward, the threaded rod 2 will rotate synchronously between the inner walls of the housing 1. The moving block 3 rotatably connected to the surface thread thereof will reciprocate on its surface. When the moving block 3 moves backward, it will pull the two connecting rods 9 through the two first connecting blocks 4. The two connecting rods 9 respectively rotate correspondingly on the outer surfaces of the two first connecting blocks 4 through the corresponding first U-shaped seats 10. At the same time, the two second connecting blocks 11 respectively rotate between the inner walls of the two second U-shaped seats 802, and the two mounting blocks 801 respectively rotate towards the inside of the housing 1 with the two fixed rods 14 as the axes until the two connecting rods 9 change from an inclined state to a state parallel to the threaded rod 2. At this time, the two mounting blocks 801 are retracted inside the housing 1, playing a role of storage. Similarly, when the moving block 3 moves forward, the two mounting blocks 801 will rotate correspondingly on their surfaces with the two fixed rods 14 as the axes until the two mounting blocks 801 unfold outward from the inside of the housing 1 until the two mounting blocks 801 are perpendicular to both sides of the housing 1 and the two mounting blocks 801 are parallel to each other. Through the electrical connection of the storage battery 13, power is supplied to the two fan bodies 803 to drive them. The fully unfolded double-headed fan increases the cooling effect. By rotating the handwheel 12, it drives the threaded rod 2 to rotate forward and backward, thereby controlling the forward and backward movement of the moving block 3 on its surface. And through the cooperation of the first connecting block 4, the first U-shaped seat 10, the connecting rod 9, the second connecting block 11 and the second U-shaped seat 802, the two mounting blocks 801 are pushed and pulled. The two fan bodies 803 can be unfolded for use or retracted inside the housing 1 for storage according to needs. The unfolding and storage of the two fan bodies 803 are realized by rotating the handwheel 12 to drive the corresponding rotation of the threaded rod 2 and controlling the forward and backward movement of the moving block 3 on the surface of the threaded rod 2. Therefore, during the use process after the two fan bodies 803 are unfolded, it is very difficult for an external force to push the two fan bodies 803, so that they can remain stable when stretching outwards for work, improving the use effect of the double-headed fan.

[0025] Embodiment 2, as Figures 1 - 4 shown, a fixed block 5 is fixedly connected to the outer surface of the threaded rod 2 near the middle position. The fixed block 5 and the moving block 3 are provided in a matching manner. A sliding rod 6 is fixedly connected to the inner surface of the housing 1. The sliding rod 6 is located above the moving block 3. A sliding block 7 is fixedly connected to the top of the moving block 3. The outer surface of the sliding rod 6 and the inner surface of the sliding block 7 are slidably connected.

[0026] The effect achieved by the entire Embodiment 2 is that when in use, when the moving block 3 moves back and forth under the rotation of the threaded rod 2, the slider 7 fixedly connected to its top will slide reciprocally synchronously on the outer surface of the sliding rod 6, playing a limiting role to prevent the position of the moving block 3 from shifting during the movement. By fixedly arranging a fixed block 5 on the outer surface of the threaded rod 2 near the middle position, the fixed block 5 can limit the moving block 3. When the moving block 3 is blocked by the fixed block 5, the two mounting blocks 801 are perpendicular to both sides of the housing 1, and the two mounting blocks 801 are parallel to each other, playing a positioning role and further improving the use effect of the dual-head fan.

[0027] Working principle: When using the double-headed fan, when the handwheel 12 is held and rotated forward and backward, the threaded rod 2 will rotate synchronously between the inner walls of the outer shell 1. The moving block 3 threadedly connected to its surface will reciprocate on its surface. When the moving block 3 moves backward, it will pull the two connecting rods 9 through the two first connecting blocks 4. The two connecting rods 9 respectively rotate correspondingly on the outer surfaces of the two first connecting blocks 4 through the corresponding first U-shaped seats 10. At the same time, the two second connecting blocks 11 respectively rotate between the inner walls of the two second U-shaped seats 802. The two mounting blocks 801 respectively rotate towards the inside of the outer shell 1 with the two fixed rods 14 as the axes until the two connecting rods 9 change from an inclined state to a state parallel to the threaded rod 2. At this time, the two mounting blocks 801 are retracted inside the outer shell 1, playing a role of storage. Similarly, when the moving block 3 moves forward, the two mounting blocks 801 will rotate correspondingly on their surfaces with the two fixed rods 14 as the axes until the two mounting blocks 801 expand outward from the inside of the outer shell 1 until the two mounting blocks 801 are perpendicular to both sides of the outer shell 1 and the two mounting blocks 801 are parallel to each other. Through the electrical connection of the storage battery 13, power is supplied to the two fan bodies 803 to drive them. The fully expanded double-headed fan increases the cooling effect. By rotating the handwheel 12, it drives the threaded rod 2 to rotate forward and backward, thereby controlling the moving block 3 to move back and forth on its surface. And through the cooperation of the first connecting block 4, the first U-shaped seat 10, the connecting rod 9, the second connecting block 11 and the second U-shaped seat 802, the two mounting blocks 801 are pushed and pulled. The two fan bodies 803 can be expanded and used according to needs or retracted inside the outer shell 1 for storage. The expansion and storage of the two fan bodies 803 are realized by rotating the handwheel 12 to drive the corresponding rotation of the threaded rod 2 and controlling the moving block 3 to move back and forth on the surface of the threaded rod 2. Therefore, during the use process after the two fan bodies 803 are expanded, it is very difficult for an external force to push the two fan bodies 803, so that they can remain stable when extending outward for work, improving the use effect of the double-headed fan. When the moving block 3 moves back and forth under the rotation of the threaded rod 2, the slider 7 fixedly connected to its top will reciprocate synchronously on the outer surface of the slide rod 6, playing a role of limiting to prevent the moving block 3 from shifting in position during the movement process. By fixedly arranging a fixed block 5 on the outer surface of the threaded rod 2 near the middle position, the fixed block 5 can limit the moving block 3. When the moving block 3 is blocked by the fixed block 5, the two mounting blocks 801 are perpendicular to both sides of the outer shell 1 and the two mounting blocks 801 are parallel to each other, playing a role of positioning and further improving the use effect of the double-headed fan.

[0028] The above are only the preferred embodiments of the present utility model, and do not limit the present utility model in other forms. Any person skilled in the relevant art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A double-head fan, characterized in that: include: A shell (1), a threaded rod (2) is rotatably connected between the inner surface walls of the shell (1), a moving block (3) is threadedly rotatably connected to the outer surface of the threaded rod (2), first connecting blocks (4) are respectively fixedly connected to the outer surfaces of both sides of the moving block (3), the outer surfaces of the two first connecting blocks (4) are both rotatably connected to the first U-shaped seats (10), the outer surfaces of the two first U-shaped seats (10) are both fixedly connected to connecting rods (9), the outer surfaces of the two connecting rods (9) are both fixedly connected to the second connecting blocks (11) at positions away from the two first U-shaped seats (10), the inner surface of the shell (1) is symmetrically fixedly connected to fixing rods (14), and the outer surfaces of the two fixing rods (14) are both provided with mounting components (8); The mounting assembly (8) is provided in two groups, and the two groups of the mounting assembly (8) are respectively arranged on both sides of the housing (1); the mounting assembly (8) comprises a mounting block (801); the mounting block (801) is arranged on the outer surface of the fixing rod (14); the inner surface of the mounting block (801) is rotatably connected to the outer surface of the fixing rod (14); the outer surface of the mounting block (801) is provided with a ventilation groove; the inner surface of the ventilation groove is provided with a fan body (803); the rear surface of the mounting block (801) is fixedly connected to a second U-shaped seat (802); the inner surface wall of the second U-shaped seat (802) is rotatably connected to the outer surface of the second connecting block (11).

2. The double-head fan according to claim 1, characterized in that: A storage battery (13) is arranged at the inner bottom of the housing (1), and the storage battery (13) and the fan body (803) are arranged in a matching manner.

3. The double-head fan according to claim 1, characterized in that: A fixed block (5) is fixedly connected to the outer surface of the threaded rod (2) near the middle position, and the fixed block (5) and the movable block (3) are arranged in a matching manner.

4. The double-head fan according to claim 1, characterized in that: A sliding rod (6) is fixedly connected to the inner surface of the housing (1), and the sliding rod (6) is located above the moving block (3).

5. The double-head fan according to claim 4, characterized in that: A sliding block (7) is fixedly connected to the top of the moving block (3), and the outer surface of the sliding rod (6) and the inner surface of the sliding block (7) are slidably connected.

6. The double-head fan according to claim 1, characterized in that: The outer surface of the threaded rod (2) rotates near the rear surface to penetrate the rear surface of the housing (1) and extend outwards, and the rear end surface of the threaded rod (2) is fixedly connected to a hand wheel (12).

7. The double-head fan according to claim 1, characterized in that: The outer surface of the mounting block (801) is in an arc shape on the side close to the fixing rod (14), and the outer surface of the mounting block (801) is in an arc shape on the side away from the fixing rod (14). The mounting block (801) and the housing (1) are arranged in a matching manner.

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