CN109681459B

CN109681459B - Floor fan

Info

Publication number: CN109681459B
Application number: CN201910064956.0A
Authority: CN
Inventors: 胡荞阳
Original assignee: Individual
Current assignee: FOSHAN CITY NANHAI DISTRICT SONGGANG HUAXING ELECTRIC APPLIANCE CO.,LTD.
Priority date: 2019-01-23
Filing date: 2019-01-23
Publication date: 2020-06-02
Anticipated expiration: 2039-01-23
Also published as: CN109681459A

Abstract

The application provides a floor fan, including fan head, lifter and base, the base includes base and lower base, it rotationally sets up to go up the base the top of base down, go up the base with be equipped with positioning mechanism down between the base, positioning mechanism is used for the restriction go up the base with relative rotation between the base down. The application provides a fall to ground fan can conveniently adjust the orientation of fan, and very laborsaving.

Description

Floor fan

Technical Field

The present disclosure relates to fans, and particularly to a floor fan.

Background

The fan is a traditional tool for enjoying the cool, the fan utilizes electric energy to drive the fan blades to rotate, the rotating fan stirs air to enable the air to flow so as to achieve the effect of enjoying the cool, and the fan is very practical in hot summer.

The floor fan is one of fans, and the floor fan generally comprises fan head, lifter and base, but the fan head horizontal hunting to increase the scope of blowing, but traditional floor fan puts the back in good place, and the scope of blowing of fan has just been confirmed, when the position of blowing that needs is not in the scope of blowing of fan, people often need lift up whole fan and adjust the orientation of fan, very hard, especially to the less user of strength, and it is very inconvenient to use.

In summary, how to conveniently adjust the orientation of the floor fan is a problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a floor fan, which solves the problem that the traditional floor fan is very labor-consuming in adjusting the orientation of the fan.

In order to solve the technical problems, the invention provides the following technical scheme: a floor fan comprises a fan head, a lifting rod and a base, wherein the base comprises an upper base and a lower base, the upper base is rotatably arranged above the lower base, a positioning mechanism is arranged between the upper base and the lower base, and the positioning mechanism is used for limiting the relative rotation between the upper base and the lower base.

Furthermore, the middle part of the bottom of the upper base is provided with a central column, the middle part of the upper surface of the lower base is provided with a central sleeve, the central sleeve is sleeved on the central column, the central column can rotate around the central axis of the central sleeve in the central sleeve, an annular roller path is arranged on the upper surface of the lower base, a plurality of universal balls are circumferentially arranged at intervals at the bottom of the upper base, and when the upper base rotates relative to the lower base, the plurality of universal balls roll in the annular roller path.

Still further, the positioning mechanism includes: the middle part of the swinging piece is pivoted above the lower base through a first pivot; the rolling wheel is pivoted above one end of the swinging piece, the rotating axis of the rolling wheel is arranged along the vertical direction, the rolling wheel is accommodated in the cavity at the bottom of the upper base, the outer peripheral surface of the rolling wheel is abutted against the inner peripheral wall of the cavity, a plurality of concave parts are uniformly arranged on the inner peripheral wall of the cavity at intervals along the circumferential direction, and the rolling wheel can be clamped in the concave parts; one end of the extension spring is fixedly connected to the other end of the swinging piece, and the other end of the extension spring is fixed on the lower base through an upright post; when the upper base is operated to rotate relative to the lower base, the rolling wheel is separated from one concave part, the rolling wheel drives the swinging piece to rotate, the swinging piece pulls the extension spring, the extension spring is elastically deformed, and then the rolling wheel is clamped in the adjacent concave part under the action of the elastic force of the extension spring.

Furthermore, the swinging member has a first lever arm, a second lever arm and a connecting portion, wherein the ends of the first lever arm and the second lever arm close to each other are respectively connected to the connecting portion, the rolling wheel is pivoted to the other end of the first lever arm, and one end of the extension spring is connected to the other end of the second lever arm.

Furthermore, the inner side surface of the concave part comprises an arc surface and a pair of guide planes, the pair of guide planes are symmetrically connected to two ends of the arc surface, and the guide planes are tangent to the arc surface.

Furthermore, the adjacent guide planes of two adjacent concave parts are in transition connection through a transition cambered surface.

Furthermore, an auxiliary handle is arranged on the periphery of the lower base, so that people can conveniently operate the upper base to rotate relative to the lower base.

Furthermore, a first groove is arranged on the periphery of the lower base, and the auxiliary handle can be accommodated in the first groove.

Furthermore, the rear end of the auxiliary handle is pivoted on the rear end part of the first groove, a first protrusion is arranged on the front end surface of the first groove, a second protrusion is arranged at the front end of the auxiliary handle, and the second protrusion can be clamped on the inner side of the first protrusion, so that the auxiliary handle can be clamped and connected in the first groove.

According to the technical scheme, the invention has the following beneficial effects:

when the orientation of the fan is adjusted, the auxiliary handle is firstly pulled to enable the front end of the auxiliary handle to be screwed out of the first groove, then one hand holds the auxiliary handle, the other hand twists the lower part of the lifting rod to enable the upper base to rotate relative to the lower base, the rolling wheels roll on the inner peripheral wall of the concave cavity until the orientation of the fan is adjusted, then the upper base is slightly adjusted to enable the rolling wheels to be clamped in the nearest concave part, the accidental rotation of the upper base relative to the lower base can be effectively prevented, and finally the auxiliary handle is accommodated in the first groove.

The invention is described in further detail below with reference to the figures and the detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

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

Fig. 2 is a partial sectional structural view of the present invention.

3 fig. 33 3 is 3 a 3 schematic 3 sectional 3 view 3 along 3 the 3 direction 3 a 3- 3 a 3 in 3 fig. 32 3. 3

Fig. 4 is a bottom view of the upper base of the present invention.

Fig. 5 is a schematic top view of the lower base of the present invention.

Fig. 6 is an enlarged schematic view of a structure at B in fig. 5.

Description of reference numerals: the fan head 1, the lifting rod 2, the upper base 3, the mounting groove 31, the cavity 32, the recess 321, the arc surface 3211, the guide plane 3212, the transition arc surface 3213, the annular groove 33, the central column 34, the arc-shaped long hole 35, the accommodating hole 36, the lower base 4, the annular raceway 41, the central sleeve 42, the first groove 43, the first protrusion 431, the second groove 44, the jack 45, the universal ball 5, the positioning mechanism 6, the swinging member 61, the first lever arm 611, the through hole 6111, the second lever arm 612, the hanging hole 6121, the connecting portion 613, the rolling wheel 62, the tension spring 63, the first pivot 64, the upright post 65, the second pivot 66, the auxiliary handle 7, the main body 71, the second protrusion 711, the boss part 72, the third pivot 8, the latch 9, and the magnet piece 10.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

The invention will be further explained with reference to fig. 1 to 6, and the floor fan shown in fig. 1 comprises a fan head 1, a lifting rod 2 and a base, wherein the fan head 1 is arranged at the upper end of the lifting rod 2, the lower end of the lifting rod 2 is fixed on the base, the base comprises an upper base 3 and a lower base 4, the upper base 3 is rotatably arranged above the lower base 4, the lower end of the lifting rod 2 is fixed on the upper base 3, the bottom of the upper base 3 is provided with a cavity 32, the middle of the cavity 32 is provided with a central column 34, the middle of the upper surface of the lower base 4 is provided with a central sleeve 42, the central sleeve 42 is sleeved on the central column 34, the peripheral part of the bottom of the upper base 3 is provided with a plurality of universal balls 5 at intervals in the circumferential direction, the plurality of universal balls 5 are respectively arranged in a plurality of mounting grooves 31 at the bottom of the upper base 3, the upper, when the upper base 3 rotates relative to the lower base 4, the center post 34 rotates within the center sleeve 42, and the plurality of ball transfer balls 5 roll within the annular raceway 41.

In this embodiment, as shown in fig. 1, 2, 3, and 4, a positioning mechanism 6 is disposed between the upper base 3 and the lower base 4, the positioning mechanism 6 includes a swinging member 61, a rolling wheel 62, and an extension spring 63, the swinging member 61 is pivotally connected above the lower base 4 through a first pivot 64, the swinging member 61 is in a "V" shape, the swinging member 61 has a first lever arm 611, a second lever arm 612, and a connecting portion 613, one end of the first lever arm 611 and one end of the second lever arm 612, which are close to each other, are respectively connected to the connecting portion 613, the connecting portion 613 is pivotally connected to the first pivot 64, the rolling wheel 62 is pivotally connected above one end of the first lever arm 611, which is away from the second lever arm 612, a rotation axis of the rolling wheel 62 is disposed along a vertical direction, the rolling wheel 62 is accommodated in the cavity 32 at the bottom of the upper base 3, an outer circumferential surface of the rolling wheel 62 abuts against an inner circumferential wall of the cavity 32, a plurality of recesses 321 are uniformly spaced along a circumferential direction on, the inner side surface of each concave portion 321 comprises an arc surface 3211 and a pair of guide planes 3212, the pair of guide planes 3212 are symmetrically connected to two ends of the arc surface 3211, the pair of guide planes 3212 are tangent to the arc surface 3211, the adjacent guide planes 3212 of the two adjacent concave portions 321 are transitionally connected through a transition arc surface 3213, when the rolling wheel 62 is engaged in the concave portion 321, the outer peripheral surface of the rolling wheel 62 abuts against the arc surface 3211 of the concave portion 321, the upper surface of the lower base 4 is provided with an upright post 65, one end of the second lever arm 612 away from the first lever arm 611 is provided with a hanging hole 6121, one end of the extension spring 63 is fixedly connected to the hanging hole 6121 of the oscillating piece 61, the other end of the extension spring 63 is connected to the upright post 65, the extension spring 63 is always in a stretching state, so as to ensure that the outer periphery of the rolling wheel 62 can always tightly abut against the inner peripheral wall of the concave cavity 32, and the upper base 3, when the rolling wheel 62 rolls into the other concave portion 321 from one concave portion 321, the rolling wheel 62 rolls out of the concave portion 321 along the guiding plane 3212 of the concave portion 321, in the process, the rolling wheel 62 drives the oscillating piece 61 to rotate the oscillating piece 61, the rotating oscillating piece 61 pulls the extension spring 63 to elastically deform the extension spring 63, then the rolling wheel 62 rolls onto the guiding plane 3212 of the other concave portion 321 through the transition arc surface 3213, at this time, under the elastic force of the extension spring 63, the oscillating piece 61 rotates in the opposite direction, finally, the periphery of the rolling wheel 62 abuts against the arc surface 3211 of the concave portion 321, the rolling wheel 62 is clamped in the adjacent concave portion 321, and the positioning mechanism 6 is arranged to lock the orientation of the fan, so as to avoid the orientation of the fan being changed due to the accidental rotation of the upper base 3 relative to the lower base 4.

In this embodiment, as shown in fig. 2, 3 and 4, an annular groove 33 is provided on a lower portion of the inner peripheral wall of the cavity 32 of the upper base 3 to prevent the swinging member 61 from colliding with the upper base 3 during rotation.

In this embodiment, as shown in fig. 1, 2, 5, and 6, an auxiliary handle 7 is disposed on the periphery of the lower base 4, the auxiliary handle 7 has a main body 71 and a protruding plate portion 72, a first groove 43 is disposed on the periphery of the lower base 4, the rear end of the main body 71 is pivotally connected to the rear end of the first groove 43 through a third pivot 8, a second protrusion 711 is disposed at the front end of the main body 71, the second protrusion 711 can be engaged with the inner side of the first protrusion 431 on the front end surface of the first groove 43, so that the auxiliary handle 7 can be engaged and fixed in the first groove 43, so that the auxiliary handle 7 is accommodated in the first groove 43 when not in use, the protruding plate portion 72 is connected to the front end of the main body 71, the protruding plate portion 72 is accommodated in the second groove 44 of the lower base 4, a gap is formed between the protruding plate portion 72 and the side wall of the second groove 44, so that a person can pull the auxiliary handle 7 by holding the protruding plate portion 72 by hand, the front end of the auxiliary shank 7 is screwed out of the first groove 43.

In this embodiment, as shown in fig. 1, 2, 3, 4, and 5, in order to facilitate the installation of the upper base 3 on the lower base 4, the through hole 6111 is disposed on the first lever arm 611 of the swing member 61, the insertion hole 45 is disposed on the lower base 4, the arc-shaped long hole 35 is disposed on the upper base 3, when the upper base 3 is installed, the swing member 61 is rotated to make the rolling wheel 62 approach to the center of the lower base 4, the extension spring 63 is extended, the bolt 9 is inserted into the insertion hole 45 on the lower base 4 through the through hole 6111 on the swing member 61 to prevent the swing member 61 from rotating reversely, the central post 34 of the upper base 3 is inserted into the central sleeve 42, the upper base 3 is adjusted to make the upper end of the bolt 9 protrude upward from the arc-shaped long hole 35 on the upper base 3, then the bolt 9 is pulled out, the swing member 61 rotates reversely under the elastic force of the extension spring 63, the outer periphery of the rolling wheel 62 abuts against the inner peripheral wall, finally, the upper base 3 is adjusted and rotated so that the roller 62 is engaged with the recess 321.

In this embodiment, as shown in fig. 1 and 2, a receiving hole 36 is formed on the outer periphery of the upper base 3, the plug 9 can be received in the receiving hole 36, a magnet piece 10 is fixed at the inner end of the receiving hole 36, the plug 9 is made of an iron material, and the plug 9 is connected to the magnet piece 10 by magnetic attraction, so as to effectively prevent the plug 9 from falling off and losing from the receiving hole 36.

In this embodiment, as shown in fig. 1, 2, and 3, when the orientation of the fan is adjusted, the auxiliary handle 7 is firstly pulled to rotate the front end of the auxiliary handle 7 out of the first groove 43, then one hand holds the auxiliary handle 7, the other hand twists the lower portion of the lifting rod 2 to rotate the upper base 3 relative to the lower base 4, the rolling wheel 62 rolls on the inner peripheral wall of the concave cavity 32 until the orientation of the fan is adjusted, then the upper base 3 is slightly adjusted to engage the rolling wheel 62 in the nearest concave portion 321, so that the accidental rotation of the upper base 3 relative to the lower base 4 can be effectively prevented, and finally the auxiliary handle 7 is accommodated in the first groove 43.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A floor fan comprises a fan head (1), a lifting rod (2) and a base, and is characterized in that the base comprises an upper base (3) and a lower base (4), the upper base (3) is rotatably arranged above the lower base (4), a positioning mechanism (6) is arranged between the upper base (3) and the lower base (4), the positioning mechanism (6) is used for limiting the relative rotation between the upper base (3) and the lower base (4), a central column (34) is arranged in the middle of the bottom of the upper base (3), a central sleeve (42) is arranged in the middle of the upper surface of the lower base (4), the central sleeve (42) is sleeved on the central column (34), and the central column (34) can rotate around the central axis of the central sleeve (42) in the central sleeve (42), be equipped with annular raceway (41) on the upper surface of lower base (4), the bottom circumference interval of going up base (3) is equipped with a plurality of universal ball (5), works as it is relative to go up base (3) when lower base (4) rotate, a plurality of universal ball (5) are in roll in annular raceway (41).

2. A floor fan according to claim 1, wherein the positioning mechanism (6) comprises:

the middle part of the swinging piece (61) is pivoted above the lower base (4) through a first pivot (64);

the rolling wheel (62) is pivoted above one end of the swinging piece (61), the rotating axis of the rolling wheel (62) is arranged along the vertical direction, the rolling wheel (62) is accommodated in the concave cavity (32) at the bottom of the upper base (3), the outer peripheral surface of the rolling wheel (62) is abutted against the inner peripheral wall of the concave cavity (32), a plurality of concave parts (321) are uniformly arranged on the inner peripheral wall of the concave cavity (32) at intervals along the circumferential direction, and the rolling wheel (62) can be clamped in the concave parts (321);

one end of the extension spring (63) is fixedly connected to the other end of the swinging piece (61), and the other end of the extension spring (63) is fixed on the lower base (4) through an upright post (65);

when the upper base (3) is operated to rotate relative to the lower base (4), the rolling wheel (62) is separated from one concave part (321), the rolling wheel (62) drives the swinging piece (61) to rotate, the swinging piece (61) pulls the extension spring (63), the extension spring (63) is elastically deformed, and then the extension spring (63) is clamped in the adjacent concave part (321) under the action of the elastic force of the extension spring (63).

3. A floor fan according to claim 2, wherein the swinging member (61) has a first lever arm (611), a second lever arm (612) and a connecting portion (613), one ends of the first lever arm (611) and the second lever arm (612) near each other are respectively connected to the connecting portion (613), the rolling wheel (62) is pivotally connected to the other end of the first lever arm (611), and one end of the extension spring (63) is connected to the other end of the second lever arm (612).

4. A floor fan according to claim 2, wherein the inner side surface of the recess (321) includes a circular arc surface (3211) and a pair of guide planes (3212), the pair of guide planes (3212) are symmetrically connected to both ends of the circular arc surface (3211), and the guide planes (3212) are tangent to the circular arc surface (3211).

5. A floor fan according to claim 4, characterized in that the adjacent guide planes (3212) of two adjacent recesses (321) are transitionally connected by a transition arc surface (3213).

6. A floor fan as claimed in claim 2, characterised in that the lower base (4) is provided with auxiliary handles (7) on its periphery to facilitate the rotation of the upper base (3) relative to the lower base (4) by a person.

7. A floor fan according to claim 6, characterized in that the lower base (4) is provided on its periphery with a first recess (43), the auxiliary handle (7) being receivable in the first recess (43).

8. A floor fan as claimed in claim 7, wherein the rear end of the auxiliary lever (7) is pivoted to the rear end of the first recess (43), a first protrusion (431) is provided on the front end surface of the first recess (43), a second protrusion (711) is provided on the front end of the auxiliary lever (7), and the second protrusion (711) is engaged with the inner side of the first protrusion (431) so that the auxiliary lever (7) is engaged with the first recess (43).