Electric fan stand column lifting device

Abstract

The utility model belongs to the technical field of electric fans, and particularly relates to an electric fan stand column lifting device which comprises a stand column, the top of the stand column is connected with a fan portion through a driving portion, and the stand column comprises a lifting structure and a locking structure. The lifting structure comprises a gas spring, the gas spring is elastically connected with a lifting rod, and the top of the lifting rod is connected with a driving part; the locking structure comprises a pressure clamp, and the pressure clamp is divided into a clamping part and a force arm rod. The air spring pushes the lifting rod to increase the height by opening the locking structure, the reset spring between the two sets of force arm rods is stressed and contracted by pressing the pressure rod, then the two clamping parts of the locking structure are opened to release the lifting rod, and the lifting rod is pushed to rise under the action of the air spring. And after the preset height is reached, the two sets of pressure rods are loosened, the two sets of force arm rods are opened under the action of the reset springs, then the two sets of clamping parts fixedly clamp the lifting rod, and the situation that the hands are clamped in the lifting process of the electric fan is avoided advantageously.

Description

Technical Field

[0001] The utility model relates to the technical field of electric fans, in particular to a column lifting device for an electric fan. Background Art

[0002] An electric fan is a household appliance that uses an electric motor to drive the blades to rotate, thereby generating wind to achieve the purposes of ventilation, heat dissipation and cooling.

[0003] The existing patent (publication number CN220487909U) and a kind of electric fan column lifting device, when it needs to be lifted, this patent can drive the threaded disk to rotate through the motor, because the column is threadedly connected to the threaded disk, and the rotation of the threaded disk allows the column to move up and down on the surface of the support seat, so as to achieve the effect of lifting the column and the fan head. There is no need to use a lot of manual force to press and lift to adjust the column and the fan head, which makes it convenient to adjust the height of the column and the fan head, reduces labor and improves practicality. However, the above-mentioned increase in the motor for lifting and adjustment undoubtedly increases the cost. At the same time, its structure needs to consider the problem of pinching hands during the lifting process, especially children. At present, many electric fans on the market can be lifted and adjusted by children, which may cause children to pinch their hands, the electric fan descends and hits their heads, and even the risk of children's hands penetrating into the electric fan due to the electric fan being too low.

[0004] Therefore, we propose an electric fan column lifting device, which is helpful to avoid the situation of hands being pinched during the lifting process of the electric fan and avoid safety risks caused by children adjusting the electric fan by themselves. Utility Model Content

[0005] In order to overcome the above defects of the prior art, the utility model provides an electric fan column lifting device to solve the problems existing in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: an electric fan column lifting device, comprising a column, the top of which is connected to a fan unit via a driving unit, and the column comprises a lifting structure and a locking structure;

[0007] The lifting structure comprises a gas spring, the gas spring is elastically connected to a lifting rod, and the top of the lifting rod is connected to a driving part;

[0008] The locking structure includes a pressure clamp, which is divided into a clamping part and a lever arm. The clamping part and the lever arm are connected by a central axis. A reset spring is installed between the two groups of lever arms of the pressure clamp. Pressure rods are symmetrically arranged on the outer walls of the two groups of lever arms of the pressure clamp. The pressure clamp pressurizes the outer wall of the lifting rod through the reset spring.

[0009] Further: the driving unit adopts a motor, the fan unit includes fan blades and a protective cover, the protective cover covers the fan blades, and the motor shaft of the motor is connected to the fan blades.

[0010] Further: the bottom end of the column is connected to a base, the base is disc-shaped, and the driving part is connected to a power cord.

[0011] Further: the inner walls of the two clamping parts of the pressure clamp are provided with friction strips, and the friction strips are in contact with the outer wall of the lifting rod.

[0012] Further: the locking structure is located and fixed on the top of the gas spring, and the locking structure locks the outer wall of the lifting rod.

[0013] Furthermore: the two groups of pressure rods contract inwardly to squeeze the reset spring, and the shorter the distance between the two groups of force arm rods of the pressure pliers, the larger the distance between the two groups of clamping parts.

[0014] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0015] 1) The electric fan column lifting device of the utility model is provided with a locking structure and a lifting structure. By opening the locking structure, the gas spring pushes the lifting rod to increase its height. By pressing the pressure rod, the return spring between the two groups of force arm rods is forced to contract, and then the two clamping parts of the locking structure are opened to release the lifting rod. The lifting rod is pushed up by the gas spring, and the two groups of pressure rods are released after reaching a predetermined height, so that the two groups of force arm rods are opened under the action of the return spring, and then the two groups of clamping parts fix the lifting rod, which is beneficial to avoid pinching of hands during the lifting and lowering process of the electric fan.

[0016] 2) With the electric fan column lifting device of the present invention, due to the setting of the locking structure, if a child wants to lower the height of the electric fan, not only does he need one hand to have enough strength to hold the two sets of pressure rods, but he also needs to be tall enough to use the other hand to press down the electric fan as a whole. Children who meet the above two requirements are usually 7 years old and have a certain safety awareness, which can prevent children from pressing their hands when using the electric fan, and prevent children from reaching their hands into the electric fan when the fan is too low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the electric fan column lifting device of the utility model;

[0018] Figure 2 This is a schematic diagram of the column structure of the electric fan column lifting device of the utility model;

[0019] Figure 3 It is a schematic side view of the column structure of the electric fan column lifting device of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the locking structure of the electric fan column lifting device.

[0021] The accompanying drawings are marked as follows: 1. column; 11. locking structure; 111. friction strip; 112. pressure clamp; 113. pressure rod; 114. return spring; 115. central axis; 12. lifting structure; 121. gas spring; 122. lifting rod; 2. base; 3. power cord; 4. drive unit; 5. fan unit. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solution of the utility model in conjunction with the drawings in the utility model. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the structures involved in the utility model are not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0023] Example:

[0024] See also Figure 1-4 The utility model provides a technical solution: an electric fan column lifting device, comprising a column 1, the top of the column 1 is connected to a fan unit 5 through a driving unit 4, the column 1 comprises a lifting structure 12 and a locking structure 11, the height of the electric fan is adjusted by the lifting structure 12, and the height of the lifting structure 12 of the electric fan is limited by the locking structure 11;

[0025] The lifting structure 12 includes a gas spring 121, the gas spring 121 is elastically connected to a lifting rod 122, and the top of the lifting rod 122 is connected to a driving unit 4;

[0026] The locking structure 11 includes a pressure clamp 112, which is divided into a clamping part and a lever arm. The clamping part and the lever arm are connected by a central axis 115. A reset spring 114 is installed between the two groups of lever arms of the pressure clamp 112. Pressure rods 113 are symmetrically arranged on the outer walls of the two groups of lever arms of the pressure clamp 112. The pressure clamp 112 applies pressure to the outer wall of the lifting rod 122 through the reset spring 114.

[0027] By opening the locking structure 11, the gas spring 121 pushes the lifting rod 122 to increase its height. By pressing the pressure rod 113, the return spring 114 between the two groups of force arm rods is forced to shrink, and then the two clamping parts of the locking structure 11 open to release the lifting rod 122. The lifting rod 122 is pushed up by the gas spring 121. After reaching a predetermined height, the two groups of pressure rods 113 are released, so that the two groups of force arm rods are opened under the action of the return spring 114, and then the two groups of clamping parts fix the lifting rod 122 to avoid pinching of hands during the lifting and lowering process of the electric fan.

[0028] Among them, the driving part 4 adopts a motor, the fan part 5 includes fan blades and a protective cover, the protective cover covers the fan blades, the motor shaft of the motor is connected to the fan blades, the driving part 4 and the fan part 5 are basic components of the electric fan, which are common knowledge among people in this technical field.

[0029] The bottom end of the column 1 is connected to a base 2, and the base 2 is disc-shaped. The driving part 4 is connected to a power line 3. The disc-shaped base 2 improves the overall support and ensures the overall stability.

[0030] The inner walls of the two clamping parts of the pressure clamp 112 are provided with friction strips 111 , which are attached to the outer wall of the lifting rod 122 . The friction strips 111 further increase the friction force, so that the pressure clamp 112 can effectively clamp and fix the lifting rod 122 .

[0031] The two groups of pressure rods 113 contract inwardly to squeeze the return spring 114 . The shorter the distance between the two groups of force arms of the pressure clamp 112 , the larger the distance between the two groups of clamping parts.

[0032] Working principle: the power cord 3 is connected to the power supply, the driving part 4 is started to drive the fan part 5 to rotate, and the gas spring 121 pushes the lifting rod 122 to increase the height by opening the locking structure 11 through the switch, and the return spring 114 between the two groups of force arm rods is forced to shrink by pressing the pressure rod 113, and then the two clamping parts of the locking structure 11 are opened to release the lifting rod 122, and the lifting rod 122 is pushed up by the gas spring 121. After reaching a predetermined height, the two groups of pressure rods 113 are released, so that the two groups of force arm rods are opened under the action of the return spring 114, and then the two groups of clamping parts fix the lifting rod 122. To lower the height of the electric fan, not only one hand needs to have enough strength to pinch the two groups of pressure rods 113, but also enough height is required to use the other hand to press down the electric fan as a whole, and then relax the two groups of pressure rods 113, so that the return spring 114 between the two groups of force arm rods is automatically reset, and the two clamping parts clamp the lifting rod 122 to fix it.

[0033] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric fan column lifting device, comprising a column (1), wherein the top of the column (1) is connected to a fan unit (5) via a driving unit (4), and characterized in that: The column (1) comprises a lifting structure (12) and a locking structure (11); The lifting structure (12) comprises a gas spring (121), the gas spring (121) is elastically connected to a lifting rod (122), and the top of the lifting rod (122) is connected to a driving unit (4); The locking structure (11) comprises a pressure clamp (112), wherein the pressure clamp (112) is divided into a clamping portion and a lever arm, wherein the clamping portion and the lever arm are connected via a central axis, a return spring (114) is installed between two groups of lever arms of the pressure clamp (112), and pressure rods (113) are symmetrically arranged on the outer walls of the two groups of lever arms of the pressure clamp (112), and the pressure clamp (112) applies pressure to the outer wall of the lifting rod (122) via the return spring (114).

2. The electric fan column lifting device according to claim 1, characterized in that: The driving part (4) adopts a motor, the fan part (5) comprises fan blades and a protective cover, the protective cover covers the fan blades, and the motor shaft of the motor is connected to the fan blades.

3. The electric fan column lifting device according to claim 1, characterized in that: The bottom end of the column (1) is connected to a base (2), the base (2) is disc-shaped, and the driving part (4) is connected to a power line (3).

4. The electric fan column lifting device according to claim 1, characterized in that: The inner walls of the two clamping parts of the pressure clamp (112) are provided with friction strips (111), and the friction strips (111) are in contact with the outer wall of the lifting rod (122).

5. The electric fan column lifting device according to claim 1, characterized in that: The locking structure (11) is located and fixed on the top of the gas spring (121), and the locking structure (11) locks the outer wall of the lifting rod (122).

6. The electric fan column lifting device according to claim 1, characterized in that: The two groups of pressure rods (113) contract inwards to squeeze the return spring (114), and the shorter the distance between the two groups of force arm rods of the pressure clamp (112), the larger the distance between the two groups of clamping parts.

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