CN109162942B

CN109162942B - Desktop fan

Info

Publication number: CN109162942B
Application number: CN201811131711.7A
Authority: CN
Inventors: 梁瀚林
Original assignee: Zhongshan Xichuang Electronic Technology Co ltd
Current assignee: Zhongshan Xichuang Electronic Technology Co ltd
Priority date: 2018-09-27
Filing date: 2018-09-27
Publication date: 2023-09-29
Anticipated expiration: 2038-09-27
Also published as: CN109162942A

Abstract

The invention relates to the technical field of articles for daily use, in particular to a desktop fan, which comprises a fan blade assembly and a prismatic fan shell, wherein the fan blade assembly is rotatably arranged in the fan shell, and ventilation grooves for ventilation are respectively arranged at the front end, the rear end and the side wall of the fan shell; the fan shell is internally provided with a driving component for driving the fan blade component to rotate. According to the invention, the fan shell is in a prismatic shape, and the driving component and the fan blade component are both arranged in the fan shell, so that the fan shell can be stably and vertically arranged on a desktop without a fan seat, the fan seat is omitted, the effect of fan out of air is achieved, and the space occupied by the fan is saved.

Description

Desktop fan

Technical Field

The invention relates to the technical field of articles for daily use, in particular to a desktop fan.

Background

The fan is a prop which drives air to flow through the rotation of the fan blade component so as to achieve the cooling effect. In addition, nowadays, due to the popularization and use of electric energy, more electric fans are in society at present, namely, electric energy drives a motor to rotate, and the motor drives a fan blade assembly to rotate so as to enable gas to flow directionally. Because of the popularity of electric fans, the fans that people now make are generally referred to as electric fans.

The electric fans on the market have the following essential components: fan seat, fan shell, blade subassembly and drive assembly, the shape of fan shell is the pie to the fan shell is installed at the fan seat and is fixed, and drive assembly is set up in the fan seat. That is, the fan base is an indispensable structure of the electric fan on the market at present, and even the hand-held fan has a handle as a supporting member of the fan housing instead of the fan base.

Obviously, the arrangement of the fan seat makes the fan have larger volume and have the defect of occupying large space, so the fan seat is not suitable for being directly put on a table for use. In order to reduce the space occupied by the fan seat, a fan is also currently disclosed, which is completely embedded in the fan seat, so that the fan is an integrated fan. However, such fans have a disadvantage of occupying a large space, although they have a reduced volume.

Disclosure of Invention

The invention provides a desktop fan aiming at the problems in the prior art, which can save the arrangement of a fan seat, thereby reducing the space occupied by the fan.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides a desktop fan, which comprises a fan blade assembly and a prismatic fan shell, wherein the fan blade assembly is rotatably arranged in the fan shell, and ventilation grooves for ventilation are respectively formed in the front end, the rear end and the side wall of the fan shell; the fan shell is internally provided with a driving component for driving the fan blade component to rotate.

Further, the fan shell comprises a shell body and a front cover, wherein the shell body comprises a rear cover, a plurality of side plates and a plurality of connecting plates, and the side plates and the connecting plates are fixedly connected with the rear cover; the shape of the front cover and the shape of the rear cover are regular polygons with the same edge number, the area of the rear cover is smaller than that of the front cover, and the number of side plates and the number of connecting plates are the same as that of the rear cover; the front cover and the rear cover are parallel to each other, and the side edges of the front cover and the vertex angle of the rear cover are opposite to each other; the side plates and the connecting plates are all arranged on the periphery of the rear cover in a spacing ring mode, and the adjacent side plates are connected end to end with the connecting plates; the front cover is detachably connected with the side plate.

Further, the shape of the side plate and the shape of the connecting plate are triangular, the bottom edge of the side plate is connected with the side edge of the front cover, and the vertex angle of the side plate is connected with the vertex angle of the rear cover; the bottom edge of the connecting plate is connected to the bottom edge of the rear cover, and the vertex angle of the connecting plate is connected to the vertex angle of the front cover.

Preferably, the connecting plate and the side plates are respectively provided with a plurality of ventilation grooves at equal intervals.

Further, the driving assembly comprises a driving motor and a control button for controlling the driving motor to start and stop, a mounting seat is arranged in the fan shell, the driving motor is arranged in the mounting seat, and a rotating shaft of the driving motor is rotatably connected with the fan blade assembly.

Further, the fan blade assembly comprises a hub with a shaft hole and a plurality of blades, wherein the hub is provided with a plurality of installation positions for installing the blades, the blades are detachably connected to the installation positions, and the driving assembly is connected to the shaft hole.

Furthermore, the mounting position comprises a limiting groove arranged on the hub, and at least two clamping grooves are arranged in the limiting groove in parallel; the tip of blade is provided with the locating part, and the locating part slides and sets up in the spacing groove, and the locating part is provided with the fixture block that is used for the card to go into the draw-in groove, and the top and the bottom of fixture block are provided with the slip inclined plane respectively.

Preferably, the inner walls of the two sides of the limiting groove are respectively provided with a sliding groove, the two sides of the limiting piece are respectively provided with a sliding piece, and the sliding pieces are arranged in the sliding grooves in a sliding way.

Preferably, the limiting piece is provided with and is used for contradicting the piece, and the contradicting piece includes kink and conflict portion, and the one end of kink is connected in the limiting piece, and conflict portion connects in the other end of kink, is provided with buffer clearance between conflict portion and the limiting piece, and conflict portion is used for contradicting the spout, and the fixture block setting is in conflict portion.

Further, a plurality of blades are respectively connected with the hub at an included angle of 40-50 degrees with the horizontal plane, the number of the blades is 2n+1, and n is a natural number.

The invention has the beneficial effects that: according to the invention, the fan shell is in a prismatic shape, and the driving component and the fan blade component are both arranged in the fan shell, so that the fan shell can be stably and vertically arranged on a desktop without a fan seat, the fan seat is omitted, the effect of fan out of air is achieved, and the space occupied by the fan is saved.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a schematic view of the fan case of the present invention.

Fig. 4 is another view of the fan case of the present invention.

Fig. 5 is a schematic view of the housing of the present invention.

FIG. 6 is a schematic view of a fan blade assembly according to the present invention.

Fig. 7 is a schematic view of the hub of the present invention.

FIG. 8 is another perspective view of the hub of the present invention.

Fig. 9 is a schematic view of a blade of the present invention.

Reference numerals: 1-fan housing, 2-fan blade assembly, 3-driving assembly, 4-ventilation groove, 11-housing, 12-front cover, 21-hub, 22-blade, 31-driving motor, 32-control button, 33-power supply wire, 111-rear cover, 112-side plate, 113-connecting plate, 114-mounting seat, 211-shaft hole, 212-mounting position, 221-limiting piece, 222-clamping block, 223-sliding piece, 224-abutting piece, 225-buffer gap, 2121-limiting groove, 2122-clamping groove, 2123-sliding groove, 2221-sliding inclined plane, 2241-bending part and 2242-abutting part.

Detailed Description

The invention will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the invention. The present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the desktop fan provided by the invention comprises a fan blade assembly 2 and a prismatic fan housing 1, wherein the fan blade assembly 2 is rotatably arranged in the fan housing 1, and ventilation grooves 4 for ventilation are respectively arranged at the front end, the rear end and the side wall of the fan housing 1; a driving component 3 for driving the fan blade component 2 to rotate is arranged in the fan shell 1.

According to the invention, the fan shell 1 is arranged in the prismatic shape, and the driving component 3 and the fan blade component 2 are arranged in the fan shell 1, so that the fan shell 1 can be stably and vertically arranged on a desktop without a fan seat, the fan seat is omitted, the effect of fan out of the fan is achieved, and the space occupied by the fan is saved.

As shown in fig. 1, 3 and 4, in this embodiment, the fan case 1 includes a case 11 and a front cover 12, the case 11 includes a rear cover 111, a plurality of side plates 112 and a plurality of connecting plates 113, and the side plates 112 and the connecting plates 113 are fixedly connected to the rear cover 111; the shape of the front cover 12 and the shape of the rear cover 111 are regular polygons with the same number of sides, the area of the rear cover 111 is smaller than that of the front cover 12, and the number of side plates 112 and the number of connecting plates 113 are the same as that of the rear cover 111; the front cover 12 and the rear cover 111 are parallel to each other, and the side edges of the front cover 12 are opposite to the vertex angle of the rear cover 111; the side plates 112 and the connecting plates 113 are all arranged in a spacing and annular mode, and the adjacent side plates 112 and the connecting plates 113 are connected end to end; the front cover 12 is detachably connected to the side panels 112. In the present embodiment, the shape of the front cover 12 and the shape of the rear cover 111 are each regular hexagons, and the side plates 112 and the connecting plates 113 are each six. The fan blade assembly 2 in the shell 11 can be cleaned by a user by detaching the front cover 12 through the detachable connection of the front cover 12 and the shell 11.

Specifically, as shown in fig. 3 or fig. 4, the shape of the side plate 112 and the shape of the connecting plate 113 are both triangular, the bottom edge of the side plate 112 is connected to the side edge of the front cover 12, and the top angle of the side plate 112 is connected to the top angle of the rear cover 111; the bottom edge of the connection plate 113 is connected to the bottom edge of the rear cover 111, and the top corner of the connection plate 113 is connected to the top corner of the front cover 12.

Since the area of the front cover 12 is larger than the area of the rear cover 111 and the length of the bottom side of the side plate 112 is equal to the length of the side of the front cover 12 and the length of the bottom side of the connection plate 113 is equal to the length of the side of the rear cover 111, the area of the side plate 112 is larger than the area of the connection plate 113 according to the area formula of the triangle. In this embodiment, the wind direction of the fan may be changed, including two modes, i.e., direct blowing and oblique upward blowing, specifically: when direct blowing is needed, one side plate 112 is abutted against the tabletop, and at the moment, the air flow driven by the rotation of the fan blade assembly 2 is changed, so that the wind is blown out from the front cover 12 in a straight and horizontal direction; when the fan needs to blow obliquely upwards, one of the connecting plates 113 is abutted against the desktop, and the area of the side plate 112 is larger than that of the connecting plate 113, so that the ventilation area of the whole fan casing 1 is smaller than that of the connecting plate 113 abutted against the desktop (the ventilation area is realized by the ventilation groove 4 formed in the whole fan casing 1), and when the fan blade assembly 2 drives the air flow to change, the air direction changes to blow obliquely upwards; in addition, since the top angle of the connecting plate 113 is directed to the front cover 12 and is mainly stressed backward, when the connecting plate 113 abuts against the table top, a slight upward inclination angle is provided compared with the case that the side plate 112 abuts against the table top, so that wind can be blown obliquely upward when the connecting plate 113 abuts against the table top. The invention realizes the effect of changing the blowing path by only rotating the fan housing 1 by setting the area of the connecting plate 113 and the area of the side plate 112 to be unequal, and has higher convenience in operation compared with the fan which needs to break the fan housing 1 up and down when changing the blowing path in the market.

Preferably, as shown in fig. 1 and 3, the connection plate 113 and the side plate 112 are provided with a plurality of ventilation slots 4 at equal intervals, respectively. By arranging the ventilation grooves 4 at equal intervals, the air outlet of the air conditioner is more uniform.

As shown in fig. 2 and 5, in this embodiment, the driving assembly 3 includes a driving motor 31 and a control button 32 for controlling the driving motor 31 to start and stop, a mounting seat 114 is disposed in the fan casing 1, the driving motor 31 is disposed in the mounting seat 114, and a rotating shaft of the driving motor 31 is rotatably connected to the fan blade assembly 2. Specifically, the control button 32 is disposed at the rear end of the mounting base 114, and an energy supply unit (not labeled in the drawing) is disposed in the mounting base 114, and the energy supply unit includes a power source and a control circuit for controlling the motor, where the power source may be a battery, a power supply wire 33, or a combination of the battery and the power supply wire 33 (in this embodiment, the power supply wire 33 is disposed), and the control circuit may be a motor driving circuit commonly used in the market at present.

As shown in fig. 6 and 8, in the present embodiment, the fan blade assembly 2 includes a hub 21 having a shaft hole 211 and a plurality of blades 22, the hub 21 is provided with a plurality of mounting positions 212 for mounting the blades 22, the blades 22 are detachably connected to the mounting positions 212, and the driving assembly 3 is connected to the shaft hole 211. According to the invention, the hub 21 and the blades 22 are detachably arranged, so that a user can detach the blades 22 according to the needs, and the number of the blades 22 meets the needs of the user; meanwhile, the user can replace the blades 22 with different colors or patterns according to the requirements, so that the interestingness of the invention is improved.

Specifically, as shown in fig. 7 and 9, the mounting position 212 includes a limiting groove 2121 disposed on the hub 21, and at least two clamping grooves 2122 are disposed in parallel in the limiting groove 2121; the end of the blade 22 is provided with a limiting piece 221, the limiting piece 221 is slidably arranged in the limiting groove 2121, the limiting piece 221 is provided with a clamping block 222 for being clamped into the clamping groove 2122, and the top and the bottom of the clamping block 222 are respectively provided with a sliding inclined surface 2221. The detachable function of the fan blade is realized by the way that the clamping block 222 is clamped into the clamping groove 2122; in addition, at least two clamping grooves 2122 are disposed in each limiting groove 2121 of the present invention, and in this embodiment, three clamping grooves 2122 are specifically provided, so that a user can change the interval between adjacent blades 22 by clamping the clamping blocks 222 into different clamping grooves 2122 according to needs. As is known from common knowledge, the larger the interval between adjacent blades 22, the more the pitch of the blade cutting wind, and thus the larger the air output. Namely, the invention has the advantages that the two clamping grooves 2122 matched with the clamping blocks 222 are arranged, so that a user can manually change the air output according to the needs, the effect of changing the air output is achieved on the premise that the driving motor 31 only maintains one rotating speed, the loss of the driving motor 31 caused by the large number of times of changing the working gear is reduced, the service life of the driving motor 31 is prolonged, the gear shifting buttons are not required to be additionally arranged, and the influence caused by omitting a fan seat is further reduced.

In addition, as shown in fig. 9, the top and bottom of the clamping block 222 are respectively provided with a sliding inclined surface 2221, so that when a user needs to change the clamping groove 2122 into which the clamping block 222 is clamped, the user only needs to directly move up or down the clamping block 222, and the clamping block 222 can slide out of the original clamping groove 2122 and slide into another clamping groove 2122, so that the fan blade position change is simpler.

Preferably, as shown in fig. 8, sliding grooves 2123 are respectively provided on inner walls of two sides of the limiting groove 2121, sliding pieces 223 are respectively provided on two sides of the limiting piece 221, and the sliding pieces 223 are slidably disposed in the sliding grooves 2123. By means of the sliding piece 223 being arranged in the sliding groove 2123 in a sliding mode, when the blade 22 is assembled to the hub 21, positioning can be completed only by sliding the sliding piece 223 into the sliding groove 2123, and therefore assembling efficiency is improved.

Preferably, as shown in fig. 9, the limiting member 221 is provided with a pressing member 224, the pressing member 224 includes a bending portion 2241 and a pressing portion 2242, one end of the bending portion 2241 is connected to the limiting member 221, the pressing portion 2242 is connected to the other end of the bending portion 2241, a buffer gap 225 is provided between the pressing portion 2242 and the limiting member 221, the pressing portion 2242 is used for pressing the sliding groove 2123, and the clamping block 222 is disposed on the pressing portion 2242. Through the arrangement of the buffer gap 225, when the fan blade position is changed and the fixture block 222 is required to be separated from the clamping groove 2122, the fixture block 222 is separated more easily by giving way.

Specifically, the blades 22 are connected to the hub 21 at angles of 40-50 ° with respect to the horizontal plane, the number of the blades 22 is 2n+1, and n is a natural number. By providing an odd number of blades 22, the occurrence of resonance can be advantageously avoided, and the angle of the blades 22 is set to 40-50 °, and preferably the cross-sectional shape of the blades 22 is streamlined, which is advantageous in reducing the resistance of the blades 22 when cutting air, thereby improving the conversion rate of the rotational energy of the driving motor 31.

The present invention is not limited to the preferred embodiments, but is intended to be limited to the following description, and any modifications, equivalent changes and variations in light of the above-described embodiments will be apparent to those skilled in the art without departing from the scope of the present invention.

Claims

1. A desktop fan, characterized in that: the fan comprises a fan blade assembly and a prismatic fan shell, wherein the fan blade assembly is rotatably arranged in the fan shell, and ventilation grooves for ventilation are respectively formed in the front end, the rear end and the side wall of the fan shell; a driving component for driving the fan blade component to rotate is arranged in the fan shell;

the fan shell comprises a shell body and a front cover, wherein the shell body comprises a rear cover, a plurality of side plates and a plurality of connecting plates, and the side plates and the connecting plates are fixedly connected with the rear cover; the shape of the front cover and the shape of the rear cover are regular polygons with the same edge number, the area of the rear cover is smaller than that of the front cover, and the number of side plates and the number of connecting plates are the same as that of the rear cover; the front cover and the rear cover are parallel to each other, and the side edges of the front cover and the vertex angle of the rear cover are opposite to each other; the side plates and the connecting plates are all arranged on the periphery of the rear cover in a spacing ring mode, and the adjacent side plates are connected end to end with the connecting plates; the front cover is detachably connected with the side plate;

the fan blade assembly comprises a hub with a shaft hole and a plurality of blades, wherein the hub is provided with a plurality of installation positions for installing the blades, the blades are detachably connected to the installation positions, and the driving assembly is connected to the shaft hole.

2. A desktop fan according to claim 1, characterized in that: the shape of the side plate and the shape of the connecting plate are triangular, the bottom edge of the side plate is connected to the side edge of the front cover, and the vertex angle of the side plate is connected to the vertex angle of the rear cover; the bottom edge of the connecting plate is connected to the bottom edge of the rear cover, and the vertex angle of the connecting plate is connected to the vertex angle of the front cover.

3. A desktop fan according to claim 1 or 2, characterized in that: the connecting plate and the side plates are respectively provided with a plurality of ventilation grooves at equal intervals.

4. A desktop fan according to claim 1, characterized in that: the fan comprises a fan shell and is characterized in that the driving assembly comprises a driving motor and a control button for controlling the driving motor to start and stop, a mounting seat is arranged in the fan shell, the driving motor is arranged in the mounting seat, and a rotating shaft of the driving motor is rotatably connected with the fan blade assembly.

5. A desktop fan according to claim 1, characterized in that: the mounting position comprises a limiting groove arranged on the hub, and at least two clamping grooves are arranged in the limiting groove in parallel; the tip of blade is provided with the locating part, and the locating part slides and sets up in the spacing groove, and the locating part is provided with the fixture block that is used for the card to go into the draw-in groove, and the top and the bottom of fixture block are provided with the slip inclined plane respectively.

6. A desktop fan according to claim 5, characterized in that: sliding grooves are formed in the inner walls of the two sides of the limiting groove respectively, sliding pieces are arranged on the two sides of the limiting piece respectively, and the sliding pieces are arranged in the sliding grooves in a sliding mode.

7. A desktop fan according to claim 5, characterized in that: the locating part is provided with the conflict piece, and the conflict piece includes kink and conflict portion, and the one end of kink is connected in the locating part, and conflict portion connects in the other end of kink, is provided with the buffer clearance between conflict portion and the locating part, and conflict portion is used for contradicting the spout, and the fixture block setting is in conflict portion.

8. A desktop fan according to claim 1, characterized in that: the blades are respectively connected with the hub at an included angle of 40-50 degrees with the horizontal plane, the number of the blades is 2n+1, and n is a natural number.