CN212106330U

CN212106330U - Desktop fan

Info

Publication number: CN212106330U
Application number: CN201922293601.7U
Authority: CN
Inventors: 袁厚兵; 袁杰
Original assignee: Guangdong Meyou Electrical Appliance Co ltd
Current assignee: Guangdong Meyou Electrical Appliance Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-12-08
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a desktop fan, which comprises a fan head, a base and a bracket, wherein the bracket is used for connecting the fan head and the base; the fan head is hinged to one side of the top of the support through a turnover connecting mechanism with two limit position limiting surfaces, the turnover connecting mechanism comprises a rotating shaft fixedly connected with the support and a turnover seat and a damping sheet which are arranged at the end part of the rotating shaft in a sleeved mode, the rotating shaft is horizontally arranged, the turnover seat is fixedly connected with the fan head, the damping sheet is arranged on two sides of the turnover seat and abutted against two side faces of the turnover seat, and the stop position of the fan head can be adjusted between the two limit positions at will. The utility model discloses conveniently adjust the rotation angle of fan head, and adjust and be difficult to the inefficacy.

Description

Desktop fan

Technical Field

The utility model relates to a fan technical field especially relates to a desktop fan.

Background

Fans are electric appliances commonly used in life, and the types of fans also exist in many kinds, such as a desk type, a floor type and the like. In office spaces such as offices, there is generally no provision for placing a large floor fan due to limited space. The small desktop fan is attractive due to the advantages of small size, convenience in carrying and small occupied space, and is suitable for being placed on an office table.

The existing desktop fan is characterized in that a fan head is fixed on a support, the air supply height is not adjustable, the fan head and the support are connected through a gear piece, the fan head and the support are prone to failure after long-time abrasion, and the function of adjusting the upper air supply angle and the lower air supply angle is lost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a desktop fan is provided, its convenient rotation angle who adjusts the fan head, and adjust and be difficult to become invalid.

In order to solve the technical problem, the utility model provides a desktop fan, which comprises a fan head, a base and a bracket, wherein the bracket is used for connecting the fan head and the base;

the fan head is hinged to one side of the top of the support through a turnover connecting mechanism with two limit position limiting surfaces, the turnover connecting mechanism comprises a rotating shaft fixedly connected with the support and a turnover seat and a damping sheet which are arranged at the end part of the rotating shaft in a sleeved mode, the rotating shaft is horizontally arranged, the turnover seat is fixedly connected with the fan head, the damping sheet is arranged on two sides of the turnover seat and abutted against two side faces of the turnover seat, and the stop position of the fan head can be adjusted between the two limit positions at will.

As an improvement of the scheme, the bracket can horizontally rotate relative to the base.

As an improvement of the scheme, the bracket is provided with a cavity with a downward opening, a vertical shaft and a sliding chute are arranged in the cavity, the vertical shaft is vertically arranged in the cavity and is positioned on an extension line of the length of the sliding chute;

a first driving motor, a crank rocker arm and a shaft sleeve matched with the vertical shaft are arranged in the base, the shaft sleeve is fixed with the base, and the free end of the vertical shaft extends into the shaft sleeve;

one end of the crank rocker arm is connected with an output shaft of the first driving motor, the other end of the crank rocker arm is inserted into the sliding groove, and the crank rocker arm rotates in the sliding groove and moves along the sliding groove under the driving of the first driving motor so as to push the support to horizontally rotate relative to the base by taking the vertical shaft as a turning center.

As an improvement of the scheme, the lower part of the support is provided with a cylindrical barrel body which takes the vertical shaft as a central axis, and the base is provided with an annular groove matched with the cylindrical barrel body.

As an improvement of the scheme, the annular groove is internally provided with the turnover guide rail which is arc-shaped and is arranged along the circumferential direction of the annular groove.

As an improvement of the scheme, the overturning guide rail is made of POM materials.

As an improvement of the above scheme, the base comprises an upper cover and a bottom cover, the upper cover and the bottom cover are matched to form an accommodating cavity, the first driving motor is arranged in the accommodating cavity,

the upper cover is provided with a movable groove communicated with the accommodating cavity and the cavity, the movable groove is a circular groove which takes the output shaft of the first driving motor as the center of a circle and takes the arm length of the crank rocker arm as the radius,

the upper cover is provided with a cylindrical sleeve for installing the shaft sleeve, a fixed pressing block is arranged in the cylindrical sleeve, and the shaft sleeve is inserted in the fixed pressing block.

As an improvement of the above scheme, the fan head comprises a front cover and a rear cover which are fixed together, the rear cover is provided with a second driving motor, an output shaft of the second driving motor extends into a space enclosed between the front cover and the rear cover, an impeller is arranged at the end of the second driving motor, and the second driving motor drives the impeller to rotate.

As an improvement of the scheme, the support comprises a shaking head seat and a connector, the lower end part of the connector is inserted into the top of the shaking head seat, the upper end part of the connector is connected with the rear cover in a rotatable mode through the overturning connecting mechanism, and the cavity is formed in the bottom of the shaking head seat.

As an improvement of the scheme, a control panel and a falling switch are arranged in the accommodating cavity, and the control panel is connected with the falling switch, the first driving motor and the second driving motor.

Implement the utility model discloses, following beneficial effect has:

the utility model discloses a set up the upset coupling mechanism who has two extreme position limit faces between fan head and support and realize the upset and be connected, specifically set up the pivot through at the level, upset seat and damping fin are established to the tip cover in the pivot, the damping fin setting in the both sides of upset seat and with the both sides face looks butt of upset seat, the pivot is fixed with the support, the upset seat is fixed with the fan head, make the fan head support upset relatively, the damping fin makes the fan head can stop the optional position between two extreme position, reach the upset positioning action, its ten minutes person of facilitating the use adjusts the air supply direction of fan head in vertical direction, the scheme that the contrast passes through gear adjustment machine fan head degree position is difficult to become invalid, and is more durable.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a desktop fan according to the present invention;

FIG. 2 is a schematic structural view of the flip-up connection of FIG. 1;

FIG. 3 is a schematic structural view of the fan head and bracket of FIG. 1;

FIG. 4 is a schematic structural view of the rocker base of FIG. 3;

FIG. 5 is a schematic structural diagram of the base and the rocker seat;

fig. 6 is an exploded view of the inner parts of the upper cover and the base.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the present invention provides an embodiment of a desktop fan, which includes a fan head 1, a base 2 and a bracket 3, wherein the bracket 3 is used for connecting the fan head 1 and the base 2; wherein, fan head 1 articulates in support 3's top one side through the upset coupling mechanism 4 that has two extreme position limiting surface, combines fig. 2, upset coupling mechanism 4 include with support 3 fixed connection's pivot 41 to and the cover establish upset seat 42 and the damping fin 43 at pivot 41 tip, pivot 41 level sets up, upset seat 42 and fan head 1 fixed connection, damping fin 43 locates the both sides of upset seat 42, and with the both sides face looks butt of upset seat 42, the stop position of fan head 1 can be adjusted wantonly between two extreme positions.

This embodiment realizes the upset through the upset coupling mechanism 4 that sets up to have two extreme position limiting surface between fan head 1 and support 3 and connects, specifically through setting up pivot 41 at the level, establish upset seat 42 and damping fin 43 at the tip cover of pivot 41, damping fin 43 sets up the both sides at upset seat 42 and with the both sides face looks butt of upset seat 42, pivot 41 is fixed with the support, upset seat 42 is fixed with fan head 1, make fan head 1 can the support 3 upset relatively, damping fin 43 makes fan head 1 can stop the optional position between two extreme positions, reach the upset positioning action, its very person of facilitating the use adjusts the direction of fan head 1 in vertical direction, the scheme of contrast through gear adjustment machine fan head 1 degree position is difficult to lose efficacy, and is more durable.

Specifically, the end of the rotating shaft 41 is fixed by a fastening nut 44 so that the damping plate 43 is in contact with both side surfaces of the flip base 42. This upset coupling mechanism 4 can guarantee through the position of adjusting tight set nut 44 that damping fin 43 and upset seat 42 remain the butt state throughout, provides the upset positioning action, and the scheme of contrast through gear adjustment casing angular position is difficult to become invalid, and is more durable. In this embodiment, the flipping connecting mechanisms 4 are preferably symmetrically arranged in two groups, so that the reliability of flipping can be further improved.

The stand 3 of this embodiment is preferably arranged to be horizontally rotatable relative to the base 2. Specifically, referring to fig. 3, the fan head 1 of the present embodiment includes a front cover 11 and a rear cover 12 fixed together, a second driving motor 13 is disposed in the rear cover 12, an output shaft of the second driving motor 13 extends into a space enclosed between the front cover 11 and the rear cover 12, an impeller 14 is disposed at an end of the second driving motor 13, and the second driving motor 13 drives the impeller 14 to rotate. The support 3 of this embodiment is assembled by shaking head seat 31 and connector 32 and forms, the lower tip of connector 32 is pegged graft with the top of shaking head seat 31, the upper end of connector 32 passes through upset coupling mechanism 4 with back cover 12 rotatable coupling. Referring to fig. 4, a cavity 33 with a downward opening is formed at the bottom of the rocker seat 31, a vertical shaft 34 and a sliding chute 35 are arranged in the cavity 33, and the vertical shaft 34 is vertically arranged in the cavity 33 and is located on an extension line of the length of the sliding chute 35.

With reference to fig. 5, the base 2 of this embodiment includes an upper cover 21 and a bottom cover 22, the upper cover 21 and the bottom cover 22 cooperate to form a receiving cavity, a first driving motor 23, a crank rocker 24, and a shaft sleeve 25 adapted to a vertical shaft 34 are disposed in the receiving cavity, the shaft sleeve 25 is fixed to the base 2, and a free end of the vertical shaft 34 extends into the shaft sleeve 25; one end of the crank rocker 24 is connected with an output shaft of the first driving motor 23, the other end of the crank rocker 24 is inserted into the sliding groove 35, and the crank rocker 24 rotates in the sliding groove 35 and moves along the sliding groove 35 under the driving of the first driving motor 23 so as to push the bracket 3 to horizontally rotate relative to the base 2 by taking the vertical shaft 34 as a turning center.

One end of the crank rocker arm 24 is connected with the output shaft of the first driving motor 23 by arranging a sliding chute 35 in the cavity 33 of the bracket 3, the other end of the crank rocker arm is inserted into the sliding chute 35, a vertical shaft 34 is arranged on the extension line of the length of the sliding chute 35, the vertical shaft 34 is inserted into the shaft sleeve 25 of the base 2, when the first driving motor 23 drives the crank rocker arm 24 to rotate, the crank rocker arm 24 rotates and moves in the sliding chute 35, and the bracket 3 is pushed to rotate relative to the base 2 by taking the vertical shaft 34 as a turning center. Its simple structure, convenient assembling only needs to correspond vertical axis 34 and inserts in axle sleeve 25 to connect the one end of crank rocking arm 24 with the output axle sleeve 25 of first driving motor 23, insert the spout 35 with the other end of crank rocking arm 24 and can realize the function of shaking the head, and the driven reliability of shaking the head is high.

In addition, referring to fig. 6, the upper cover 21 is provided with a movable groove 211 communicating the accommodating cavity with the cavity 33, the movable groove 211 is a circular groove that takes the output shaft of the first driving motor 23 as the center of a circle and the arm length of the crank rocker 24 as the radius, a cylindrical sleeve 212 for installing the shaft sleeve 25 is formed on the upper cover 21, a fixed pressing block 213 is arranged in the cylindrical sleeve 212, and the shaft sleeve 25 is inserted into the fixed pressing block 213. The lower part of the rocker head seat 31 is provided with a cylindrical barrel 36 taking the vertical shaft 34 as a central axis, the upper cover 21 is provided with an annular groove 26 matched with the cylindrical barrel 36, the annular groove 26 is internally provided with a turnover guide rail 27, and the turnover guide rail 27 is arc-shaped and is arranged along the circumferential direction of the annular groove 26. The turning guide rail 27 is made of POM material, so that good wear resistance can be kept, the support 3 can always rotate smoothly in the base 2, the blocking phenomenon is reduced, and the silencing effect is good.

In addition, this embodiment hold the intracavity and be equipped with control panel 28, control panel 28 with first driving motor 23 and second driving motor 13 are connected, upper cover 21 surface is equipped with control button, conveniently adjusts the horizontal direction of wind-force size and air supply. In addition, a falling switch 29 connected with the control board 28 is further arranged in the accommodating cavity, and the falling switch 29 plays a role in power failure when the desk fan falls down, so that the safety of the desk fan is improved.

To sum up, implement the utility model discloses following beneficial effect has:

1. the fan head of the utility model can be stopped at any position between the two extreme positions, which is convenient for adjusting and positioning the position of the desktop fan for blowing air up and down;

2. after the damping fin is worn, the damping fin can be kept in butt joint with the overturning seat by adjusting the fastening nut, so that the damping fin is more reliable and durable;

3. the structure of enabling the fan head to swing horizontally is simple, the assembly is convenient, the fan head can swing only by inserting the vertical shaft into the shaft sleeve correspondingly, sleeving one end of the crank rocker arm with the output shaft of the driving motor and inserting the other end of the crank rocker arm into the sliding groove, and the reliability of the swing transmission is high;

4. the upper cover is provided with an annular groove matched with the shaking seat, and a rotary guide rail is arranged in the annular groove, so that the horizontal shaking process is smoother and more silent.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.

Claims

1. A desktop fan is characterized by comprising a fan head, a base and a support, wherein the support is used for connecting the fan head and the base;

2. The desktop fan of claim 1, wherein the bracket is horizontally rotatable with respect to the base.

3. A desktop fan according to claim 1 or 2, wherein the bracket is provided with a cavity which is opened downwards, a vertical shaft and a sliding chute are arranged in the cavity, the vertical shaft is vertically arranged in the cavity and is positioned on an extension line of the length of the sliding chute;

4. The desktop fan as claimed in claim 3, wherein the lower portion of the bracket is provided with a cylindrical barrel with the vertical shaft as a central axis, and the base is provided with an annular groove matched with the cylindrical barrel.

5. The table top fan of claim 4, wherein the annular groove has a roll-over guide rail disposed therein, the roll-over guide rail having an arc shape and being arranged along a circumferential direction of the annular groove.

6. The table top fan of claim 5, wherein the tumble guide rail is made from a POM material.

7. The desk fan of claim 3, wherein the base includes an upper cover and a lower cover, the upper cover and the lower cover cooperating to form an accommodating cavity, the first drive motor being disposed in the accommodating cavity,

8. The desk fan as recited in claim 7, wherein said fan head comprises a front housing and a rear housing fixed together, said rear housing having a second drive motor, an output shaft of said second drive motor extending into a space defined between said front housing and said rear housing and having an impeller at an end thereof, said second drive motor driving said impeller to rotate.

9. The desktop fan as claimed in claim 8, wherein the bracket comprises a rocker base and a connector, the lower end of the connector is inserted into the top of the rocker base, the upper end of the connector is rotatably connected with the rear cover through the turnover connection mechanism, and the cavity is arranged at the bottom of the rocker base.

10. The desk fan of claim 8, wherein a control board and a fall switch are disposed in the accommodating cavity, and the control board is connected to the fall switch, the first driving motor and the second driving motor.