WO2019192091A1

WO2019192091A1 - Electric fan column

Info

Publication number: WO2019192091A1
Application number: PCT/CN2018/093946
Authority: WO
Inventors: Hongzhao YE
Original assignee: Ye Hongzhao
Priority date: 2018-04-02
Filing date: 2018-07-01
Publication date: 2019-10-10

Abstract

An electric fan column, including a first outer column, wherein the upper surface of the first outer column is fixedly connected with a second outer column, the inner side wall of the first outer column is slidably connected with an inner column, and the outer side wall of the inner column also passes through the second outer column. The lower surface of the inner column is provided with a fixing device, and a shell is provided at an upper end of the outer side wall of the inner column. The electric fan column is made to have the advantages of high strength, light weight and portability by the arrangement of the first outer column, the second outer column and the inner column. Expansion or contraction and fixation between the inner column and the first outer column may be achieved by the fixing device, a connecting piece may be located by an L-shaped locating slot, to prevent the connecting piece from generating horizontal movement under the action of an external force, the inner column may be effectively kept not to rotate together with a connecting rod by a rotating disk and a rotating shaft, and the inner column may be effectively protected by the second outer column, thereby prolonging the service life. The electric fan column is convenient in operation and rational in structure, and has strong practicality.

Description

ELECTRIC FAN COLUMN

TECHNICAL FIELD

The present invention relates to the technical field of electric fans. More particularly, the present invention relates to an electric fan column.

BACKGROUND OF THE PRESENT INVENTION

An electric fan, also called fan or ventilating fan, is a domestic appliance using a motor to drive vanes to rotate so as to accelerate air ventilation, is widely used in places such as house, classroom, office, shop, hospital, hotel and the like. The electric fan mainly includes a base, inner and outer column pipes and an electric fan headlight component. However, the existing electric fan column still has certain disadvantages: the inner and outer column pipes of the existing electric fan are steel pipes, the steel pipe is high in cost, heavy in weight and difficult to carry and the plastic pipe is low in strength and easy to damage, the telescopic structure of the existing electric fan column is mainly fixed using fasteners, and multi-step operations are needed, so that the process is complicated. Therefore, an electric fan column is proposed to solve the above-mentioned problem.

SUMMARY OF THE PRESENT INVENTION

The present invention aims to provide an electric fan column, to solve the problem proposed in the background of the present invention.

In order to achieve the above purpose, the present invention provides the following technical solution: an electric fan column, comprising a first outer column, wherein the upper surface of the first outer column is fixedly connected with a second outer column, the inner side wall of the first outer column is slidably connected with an inner column, and the outer side wall of the inner column passes through the second outer column; the lower surface of the inner column is provided with a fixing device , and the outer side wall of the first outer column is symmetrically provided with sliding straight slots used cooperatively together with the fixing device, the fixing device comprising a lifting base; the inner side wall of the lifting base is provided with a rotating shaft, the upper surface of the rotating shaft is provided with a rotating disk, the upper surface of the rotating disk is provided with an annular locating groove used cooperatively together with the inner column, the side wall of the lifting base is symmetrically provided with connecting pieces, the side wall of each connecting piece is rotatably connected with a handle in the direction away from the circle center of the inner column, the outer side wall of the first outer column is uniformly provided with L-shaped locating slots used cooperatively together with the connecting pieces from bottom to top; a shell is arranged at the upper end of the outer side wall of the inner column, an electric fan control button is arranged at the front end of the outer side wall of the shell, one end of a power line is arranged at the rear end of the outer side wall of the shell, and the other end of the power line is electrically connected to the electric fan control button;

the second outer column comprises an annular base, wherein the upper surface of the annular base is uniformly provided with a plurality of lower steel sheets, the upper end of the outer side wall of each of the plurality of lower steel sheets is fixedly connected to a first outer ring, the upper end of the inner side wall of each of the plurality of lower steel sheets is fixedly connected to an inner ring, walls between side walls of the plurality of lower steel sheets are slidably connected with upper steel sheets through by sliding slots, the upper surface of each of the plurality of upper steel sheets is fixedly connected with an annular top cover, the lower end of the inner side wall of each of the plurality of upper steel sheets is fixedly connected with an inner ring, and the lower end of the outer side wall of each of the plurality of upper steel sheets is fixedly connected with a second outer ring;

wherein, the rotating shaft and the rotating disk are integrated in one piece, an elastic rubber is connected between the upper surface of the connecting piece and the outer side wall of the handle, and a spring is connected between the lower surface of the connecting piece and the outer side wall of the handle.

Preferably, both the first outer column and the second outer column are steel pipes, the inner column is a plastic pipe, and the inner side wall of the inner column is uniformly provided with honeycomb holes.

Preferably, the wall thickness of the lower steel sheet is equal to that of the upper steel sheet, the internal diameter of the first outer column is equal to that of the second outer column, and the external diameter of the inner column is less than the internal diameter of the inner ring.

Preferably, a piece of shock-absorption sponge is arranged at the bottom of an inner cavity of the first outer column, the lower surface of the inner column is wrapped with a rubber mat, and the lower surface of the lift base is provided with a shock-absorption rubber mat.

Compared with the prior art, the present invention has the advantageous effect that: for an electric fan column, expansion or contraction and fixation between the inner column and the first outer column may be achieved by a fixing device, a connecting piece may be located by an L-shaped locating slot, to prevent the connecting piece from generating horizontal movement under the action of an external force, the inner column may be effectively kept not to rotate together with a connecting rod by a rotating disk and a rotating shaft, the inner column may be effectively protected by the second outer column, thereby prolonging the service life, the lower steel sheets and the upper steel sheets may be effectively fixed by arranging the first outer ring, the inner ring and the second outer ring, thereby preventing the upper steel sheets and the lower steel sheets from falling off in the frequent sliding process, and the electric fan column may be made to have the advantages of high strength, light weight and portability by arrangement of the first outer column, the second outer column and the inner column, thereby being easy in operation and rational in structure, and having strong practicality.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a main view of the present invention;

FIG. 2 is longitudinal sectional view of a first outer column of the present invention;

FIG. 3 is a sectional top view of a second outer column of the present invention; and

FIG. 4 is a right view of a first outer column of the present invention.

In the drawing: 1. first outer column; 201. annular base; 202. lower steel sheet; 203. first outer ring; 204. inner ring; 205. upper steel sheet; 206. annular top cover; 207. second outer ring; 3. inner column; 4. fixing device; 401. lifting base; 402. rotating shaft; 403. rotating disk; 404. annular locating groove; 405. connecting piece; 406. handle; 407. L-shaped locating slot; 5. sliding straight slot; 6. shell; 7. power line; 8 electric fan control button; 9. shock-absorption sponge; 10. elastic rubber; 11. spring.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

The technical solution in the embodiments of the present invention will be clearly and fully described below in combination with the drawings in the embodiments of the present invention. Apparently, the described embodiments are merely part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those ordinary skilled in the art without contributing creative labor will belong to the protection scope of the present invention.

Referring to FIG. 1-FIG. 4, the present invention provides the following technical solution: an electric fan column, comprising a first outer column 1, wherein the upper surface of the first outer column 1 is fixedly connected with a second outer column, the inner side wall of the first outer column 1 is slidably connected with an inner column 3, and the outer side wall of the inner column 3 passes through the second outer column; the expansion or contraction of the electric fan column is achieved by the relative sliding generated between the first outer column and the inner column; the lower surface of the inner column 3 is provided with a fixing device 4, and the outer side wall of the first outer column 1 is symmetrically provided with sliding straight slots 5 used cooperatively together with the fixing device 4, the fixing device 4 comprising a lifting base 401; the inner side wall of the lifting base 40 is provided with a rotating shaft 402, the upper surface of the rotating shaft 402 is provided with a rotating disk 403, the upper surface of the rotating disk 403 is provided with an annular locating groove 404 used cooperatively together with the inner column 3, the side wall of the lifting base 401 is symmetrically provided with connecting pieces 405, the side wall of each connecting piece 405 is rotatably connected with a handle 406 in the direction away from the circle center of the inner column 3, and the outer side wall of the first outer column 1 is uniformly provided with L-shaped locating slots 407 used cooperatively together with the connecting pieces 405 from bottom to top. Expansion or contraction and fixation between the inner column and the first outer column may be achieved by the fixing device. When not used, the connecting piece is located at the bottom of the sliding straight slot when the inner column is under the action of the force of gravity. When there is a need to adjust the electric fan column in height, the handles are held by two hands, the handles are upwards pulled and the connecting pieces are upwards moved along the sliding straight slots at the same time. After the connecting pieces are moved to a suitable height, the handles are anticlockwise rotated, so that the connecting pieces are anticlockwise rotated together with the handles. The left connecting piece enters a horizontal slot of the front L-shaped locating slot, the right connecting piece enters a horizontal slot of the rear L-shaped locating slot, and all the connecting pieces fall and enter the vertical slots of the L-shaped locating slots under the action of force of gravity after removing the force acted on the handles. The connecting piece may be located by the L-shaped locating slot, to prevent the connecting piece from generating horizontal movement under the action of an external force. In the process of rotation, the connecting piece generates a horizontal rotation force to the lifting base, and at the same time, the rotating disk and the inner column thereabove generate relative sliding to the lifting base under the action of the rotating shaft. Therefore, the force acted on the lifting base may not dive the inner column to rotate together with same. A shell 6 is arranged at the upper end of the outer side wall of the inner column 3, an electric fan control button 8 is arranged at the front end of the outer side wall of the shell 6, one end of a power line 7 is arranged at the rear end of the outer side wall of the shell 6, and the other end of the power line 7 is electrically connected to the electric fan control button 8. The lower surface of the shell is fixedly connected with an annular top cover, power is supplied to the electric fan through the power line, and the electric fan is controlled by the electric fan control button.

The second outer column comprises an annular base 201, wherein the upper surface of the annular base 201 is uniformly is provided with a plurality of lower steel sheets 202, the upper end of the outer side wall of each of the plurality of the lower steel sheets 202 is fixedly connected with a first outer ring 203, the upper end of the inner side wall of each of the plurality of the lower steel sheets 202 is fixedly connected with an inner ring 204, walls between side walls of the plurality of the lower steel sheets 202 are slidably connected with upper steel sheets 205 by sliding slots, the upper surface of each of the plurality of the upper steel sheets 205 is fixedly connected with an annular top cover 206, the lower end of the inner side wall of each of the plurality of the upper steel sheets 205 is fixedly connected with an inner ring 204, and the lower end of the outer side wall of each of the plurality of the upper steel sheets 205 is fixedly connected with a second outer ring 207. In order to reduce the cost of the electric fan and the weight of the electric fan column, the inner column is designed into a plastic pipe. Because the strength of the plastic pipe is relatively lower than that of a steel pipe, the inner column may be effectively protected by the second outer column, thereby prolonging the service life. Before use, no relative sliding is generated between the upper steel sheets and the lower steel sheets, and the lower surface of the second outer ring is fitted to the upper surface of the annular base, when the inner column is upwards pushed, because the lower surface of the shell is fixedly connected with the annular top cover, an upward pushing force is generated to the annular top cover. At this moment, relative sliding is generated between the lower steel sheets and the upper steel sheets, both the inner ring and the second outer ring which are fixedly connected with the upper steel sheets upwards move. At this moment, the second outer column becomes a hollow circular ring, and the second outer column is increased in length to package the inner column therein, to prevent the outside world from damaging the inner column and then affecting the service life thereof. The lower steel sheets and the upper steel sheets may be effectively fixed by arranging the first outer ring, the inner ring and the second outer ring, thereby preventing the upper steel sheets and the lower steel sheets from falling off in the frequent sliding process.

Specifically, both the first outer column 1 and the second outer column are steel pipes, the inner column 3 is a plastic pipe, and the inner side wall of the inner column 3 is uniformly provided with honeycomb holes. The steel pipe has the advantages of high hardness and high strength, but the steel pipe is heavy in weight and is not easy to carry and move. The plastic pipe has the advantage of light in weight, but has the strength relatively lower than that of the steel pipe. The electric fan column is made to have the advantages of high strength, light weight and portability by arranging the steel pipes and plastic pipe in sequence.

Specifically, the wall thickness of the lower steel sheet 202 is equal to that of the upper steel sheet 205, the internal diameter of the first outer column 1 is equal to that of the second outer column, the external diameter of the inner column 3 is less than the internal diameter of the inner ring 204, and the external diameter of the inner column is less than the internal diameter of the inner ring, thereby guaranteeing that the inner column smoothly slides in the first outer column and the second outer column.

Specifically, a piece of shock-absorption sponge 9 is arranged at the bottom of an inner cavity of the first outer column 1, the lower surface of the inner column 3 is wrapped with a rubber mat, and the lower surface of the lift base is provided with a shock-absorption rubber mat 401, thereby weakening the force acted on the inner column in the process that the inner column falls and prolonging the service life.

Specifically, the rotating shaft 402 and the rotating disk 403 are integrated in one piece, which improves the fixing relationship between the two, an elastic rubber 10 is connected between the upper surface of the connecting piece 405 and the outer side wall of the handle 406, the junction of the connecting piece and the handle are protected by the elastic rubber, and a spring 11 is connected between the lower surface of the connecting piece 405 and the outer side wall of the handle 406. When the handheld handle rotates, the spring is extended, so that the handle automatically returns to the initial state under the action of the elasticity of the spring after removing the force acted on the handle.

The operating principle is that: the present invention provides an electric fan column. Expansion or contraction and fixation between the inner column and the first outer column may be achieved by a fixing device. When not used, the connecting piece is located at the bottom of the sliding straight slot when the inner column is under the action of the force of gravity. When there is a need to adjust the electric fan column in height, the handle is held by two hands, so that the handle and the connecting piece are at the same level. The handle is upwards pulled and the connecting piece is upwards moved along the sliding straight slot at the same time. After the connecting piece is moved to a suitable height, the handle is anticlockwise rotated, so that the connecting piece is driven to enter the horizontal slot of the L-shaped locating slot. The connecting piece falls and enters the vertical slot of the L-shaped locating slot under the action of force of gravity after removing the force acted on the handle. The connecting piece may be located by the L-shaped locating slot, to prevent the connecting piece from generating horizontal movement under the action of an external force. The connecting piece generates a horizontal rotation force to the lifting base in the rotation process, and the rotating disk and the inner column thereabove generate relative sliding to the lifting base under the action of the rotating shaft. Therefore, the force acted on the lifting base will not drive the inner column to rotate together with same. Power is supplied to the electric fan through the power line, and the electric fan is controlled by the electric fan control button. In order to reduce the cost of the electric fan and the weight of the electric fan column, the inner column is designed into a plastic pipe. Because the strength of the plastic pipe is relatively lower than that of a steel pipe, the inner column may be effectively protected by the second outer column, thereby prolonging the service life. Before use, no relative sliding is generated between the upper steel sheets and the lower steel sheets, and the lower surface of the second outer ring is fitted to the upper surface of the annular base. When the inner column is upwards pushed, because the lower surface of the shell is fixedly connected with the annular top cover, an upward pushing force is generated to the annular top cover. At this moment, relative sliding is generated between the lower steel sheets and the upper steel sheets, both the inner ring and the second outer ring which fixedly connected with the upper steel sheets upwards move. At this moment, the second outer column becomes a hollow circular ring, and the second outer column is increased in length to package the inner column therein, to prevent the outside world from damaging the inner column and then affecting the service life thereof. The lower steel sheets and the upper steel sheets may be effectively fixed by arranging the first outer ring, the inner ring and the second outer ring, thereby preventing the upper steel sheets and the lower steel sheets from falling off in the frequent sliding process.

Although embodiments of the present invention have been shown and described, it will be appreciated that various variations, amendments, replacements and modifications can be made by the person of ordinary skill in the art without departing from the principle and spirit of the present invention, and the scope of the present invention is limited by the appended claims and the equivalent thereof.

Claims

An electric fan column, comprising a first outer column (1) , wherein the upper surface of the first outer column (1) is fixedly connected with a second outer column, the inner side wall of the first outer column (1) is slidably connected with an inner column (3) , and the outer side wall of the inner column (3) also passes through the second outer column; the lower surface of the inner column (3) is provided with a fixing device (4) , and the outer side wall of the first outer column (1) is symmetrically provided with sliding straight slots (5) used cooperatively together with the fixing device (4) ; the fixing device (4) comprises a lifting base (401) ; the inner side wall of the lifting base (401) is provided with a rotating shaft (402) , the upper surface of the rotating shaft (402) is provided with a rotating disk (403) , the upper surface of the rotating disk (403) is provided with an annular locating groove (404) used cooperatively together with the inner column (3) , the side wall of the lifting base (401) is symmetrically provided with connecting pieces (405) , the side wall of each connecting piece (405) is rotatably connected with a handle (406) in the direction away from the circle center of the inner column (3) , the outer side wall of the first outer column (1) is uniformly provided with L-shaped locating slots (407) used cooperatively together with the connecting pieces (405) from bottom to top; a shell (6) is arranged at the upper end of the outer side wall of the inner column (3) , an electric fan control button (8) is arranged at the front end of the outer side wall of the shell (6) , one end of a power line (7) is arranged at the rear end of the outer side wall of the shell (6) , and the other end of the power line (7) is electrically connected to the electric fan control button (8) ;

the second outer column comprises an annular base (201) , wherein the upper surface of the annular base (201) is uniformly provided with a plurality of lower steel sheets (202) , the upper end of the outer side wall of each of the plurality of lower steel sheets (202) is fixedly connected to a first outer ring (203) , the upper end of the inner side wall of each of the plurality of lower steel sheets (202) is fixedly connected to an inner ring (204) , walls between side walls of the plurality of lower steel sheets (202) are slidably connected with upper steel sheets (205) by sliding slots, the upper surface of each of the plurality of upper steel sheets (205) is fixedly connected with an annular top cover (206) , the lower end of the inner side wall of each of the plurality of upper steel sheets (202) is fixedly connected with an inner ring (204) , and the lower end of the outer side wall of each of the plurality of upper steel sheets (202) is fixedly connected with a second outer ring (207) ;

wherein the rotating shaft (402) and the rotating disk are integrated in one piece, an elastic rubber (10) is connected between the upper surface of the connecting piece (405) and the outer side wall of the handle (406) , and a spring (11) is connected between the lower surface of the connecting piece (405) and the outer side wall of the handle (406) .
The electric fan column of claim 1, wherein both the first outer column (1) and the second outer column are steel pipes, the inner column (3) is a plastic pipe, and the inner side wall of the inner column (3) is uniformly provided with honeycomb holes.
The electric fan column of claim 1, wherein the wall thickness of the lower steel sheet (202) is equal to that of the upper steel sheet (205) , the internal diameter of the first outer column (1) is equal to that of the second outer column, and the external diameter of the inner column (3) is less than the internal diameter of the inner ring (204) .
The electric fan column of claim 1, wherein a piece of shock-absorption sponge (9) is arranged at the bottom of an inner cavity of the first outer column (1) , the lower surface of the inner column (3) is wrapped with a rubber mat, and the lower surface of the lift base (401) is provided with a shock-absorption rubber mat.