CN101936299A

CN101936299A - Fan with internal head shaking device

Info

Publication number: CN101936299A
Application number: CN 201010293414
Authority: CN
Inventors: 田畴
Original assignee: Guangdong Kennede Electronics Manufacturing Co Ltd
Current assignee: Guangdong Kennede Electronics Manufacturing Co Ltd
Priority date: 2010-09-27
Filing date: 2010-09-27
Publication date: 2011-01-05
Anticipated expiration: 2030-09-27
Also published as: CN101936299B

Abstract

The invention relates to a fan with an internal head shaking device, comprising a main body, a speed reduction mechanism and a sleeve, wherein the main body is provided with a cavity for accommodating a fan assembly, the fan assembly comprises a movable bracket, a motor shell is arranged in the center of the movable bracket, and a hollow fixed upright column is arranged in the cavity of the main body and connected with the motor shell; the speed reduction mechanism is arranged at the rear part of the motor, the tail end of the speed reduction mechanism extends downwards and is axially connected with a crankarm which is connected with a swing rod, and the length of the swing rod is greater than that of the crankarm; the sleeve is sleeved at the upper part of the upright column, an eccentric lug is arranged at the outer side of the sleeve, the other end of the swing rod is connected with the eccentric lug through a shaft pin, internally convex vertical ribs are evenly distributed on the surface of inner side of the sleeve, a transverse hole is arranged at the upper part of the upright column and provided with a spring, a steel ball is positioned at the end part of the spring, and the spring pushes the steel ball to the inner side surface of the sleeve. The head shaking device of the fan is arranged inside a fan guard and has the advantages of reasonable structure and reasonable stress.

Description

Fan with inner head-shaking device

Technical field

The present invention relates to a kind of fan, particularly a kind of fan with inner head-shaking device.

Background technique

Present oscillating fan main structure comprises blower tray, motor casing, fan housing and fan blade, motor casing is equipped with motor, and motor casing is usually located at the rear portion of fan housing, and motor shaft stretches into, go in the fan housing and be connected with fan blade, the head-shaking device of fan is located between motor casing and the blower tray usually, and above-mentioned traditional oscillating fan exists volume big, uses inconvenient, also be unfavorable for simultaneously packed and transported, when transportation, need take packing apart, assemble again, make troubles to the user in use.

Summary of the invention

In order to overcome the deficiencies in the prior art, the invention provides a kind of compact structure, fashionable, head-shaking device is located at the fan of fan guard inside.

The technical solution adopted in the present invention is:

Fan with inner head-shaking device, comprise main body, main body is provided with the cavity that fan component is installed, fan component comprises travel(l)ing rest, the travel(l)ing rest outside is fixed with forward and backward fan housing, and the center of travel(l)ing rest is a motor casing, and motor casing is equipped with motor, the main body inner chamber is provided with the vertical columns of hollow, and column is connected with motor casing; The motor rear portion is provided with reducing gear, and the terminal shaft of described reducing gear stretches out downwards, and terminal shaft is connected with cranks arm, and cranking arm is connected with fork, and the length of fork is greater than cranking arm; One is sheathed on the jacket casing on column top, the jacket casing outside has eccentric projection, the other end of fork is connected with this eccentric projection by pivot pin, the jacket casing inner surface is evenly distributed with the vertical muscle of convex, column top is provided with transverse holes, transverse holes is equipped with spring, and spring end is placed with steel ball, and spring pushes up steel ball to the jacket casing inner surface.

Further improvement of the present invention, described transverse holes are cross through hole, and both ends of the spring all is placed with steel ball.

Further improvement of the present invention, described reducing gear comprises the two-stage worm drive, motor driving one-level worm screw, one-level worm screw and one-level gear engagement, the one-level gear is movably set in the second-stage worm front portion, the second-stage worm front portion also is arranged with clutch, is provided with circumferential restraint device between clutch and the second-stage worm, and after wind is covered with can stir the switch that clutch axially slidably reciprocates along second-stage worm; Clutch is respectively equipped with the corresponding side of one-level gear can engage the Ka Tai that forms transmission mutually.

Further improvement of the present invention, the Ka Tai of clutch and one-level gear respectively is the triangular shape fixture block by at least two and forms, and the interlock contact position is a straight flange, and the Ka Tai outer end is most advanced and sophisticated, and the back side, interlock position is hypotenuse.

Further improvement of the present invention, described circumferential restraint device comprises: establish in the clutch and offer axial groove, second-stage worm is provided with latch.

Further improvement of the present invention, described circumferential restraint device are spline and keyway linkage structure.

Further improvement of the present invention, column top is connected with jacket casing by intermediate connector, and the bottom of described intermediate connector is stretched in the column and is utilized screw to fix, and the intermediate connector top is provided with the anti-limit that prevents that jacket casing from upwards throwing off.

The invention has the beneficial effects as follows: the design is arranged at the column of the whole rotation section of supports fan in the forward and backward fan housing, and fan electromotor and head-shaking device all are located at inside, makes the overall structure of fan very compact, but fan complete machine packing when transportation is easy to use; In addition, the design is located at column top with the overload device of fan, has not only simplified the structure of link in the motor casing, the working life of having improved transmission device, and also overload device is stressed also more reasonable.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the decomposition texture schematic representation of fan;

Fig. 3 is the decomposing schematic representation of travel(l)ing rest and vertical columns;

Fig. 4 is the decomposing schematic representation of head-shaking device;

Fig. 5 is the top exploded view of head-shaking device.

Embodiment

Referring to figs. 1 through shown in Figure 5, fan with inner head-shaking device, comprise main body 1, main body 1 is provided with the cavity that fan component is installed, and fan component comprises travel(l)ing rest 11, and travel(l)ing rest 11 outsides are fixed with forward and backward fan housing 12,13, the center of travel(l)ing rest 11 is motor casings 14, motor casing 14 is equipped with motor 3, and main body 1 inner chamber is provided with the vertical columns 2 of hollow, and column 2 is connected with motor casing 14; The motor rear portion is provided with reducing gear, and the terminal shaft of reducing gear stretches out downwards, and terminal shaft is connected with cranks arm 36, cranks arm 36 to be connected with fork 37, and the length of fork 37 is greater than cranking arm 36; One is sheathed on the jacket casing 4 on column 2 tops, jacket casing 4 outsides have eccentric projection 41, the other end of fork 37 is connected with this eccentric projection 41 by pivot pin, jacket casing 4 inner surfaces are evenly distributed with the vertical muscle 42 of convex, column 2 tops are provided with transverse holes 21, transverse holes is equipped with spring 22, and spring 22 ends are placed with steel ball 23, and spring 22 pushes up steel ball 23 to jacket casing 4 inner surfaces.

When fan head swinging was worked, motor drove reducing gear successively, and terminal shaft also drives 36 rotations of cranking arm, when 36 the rotating force of cranking arm puts on fork 37; Because column is relatively-stationary, and the jacket casing 4 that is connected in fork 37 other ends is compressed by spring and steel ball, and under the normal working, cranking arm 36 puts on the pressure that power on the jacket casing can't overcome spring, the rotation of jacket casing is subjected to stopping of vertical muscle 42, can't move; Therefore, under the anti-power of work, the fan component that comprises travel(l)ing rest, front and back fan housing, motor, reducing gear is that the center swings back and forth as small angle with the joint of fork 37 and eccentric projection 41, thereby realizes the work of shaking the head.When shaking the head of fan is subjected to other factors and can not runs well, shake the head such as stopping by force under external force, and clutch, at this moment, because motor is still at normal output, produce bigger torsion, torsion puts on the eccentric projection 41, when the torsion that is produced acquires a certain degree, torsion has overcome the pressure of spring to steel ball, toward interior pressure, rotating appears the vertical muscle 42 of jacket casing 4 inboards in jacket casing 4, thereby has avoided the gear of reducing gear impaired with steel ball.

In order to make the stressed more reasonable of overload device, transverse holes 21 is a cross through hole, and spring 22 two ends all are placed with steel ball 23.

Reducing gear comprises the two-stage worm drive, motor 3 drives one-level worm screw 31, one-

level worm screw

31 and 32 engagements of one-level gear, one-level gear 32 is movably set in second-stage worm 33 front portions, second-stage worm 33 front portions also are arranged with clutch 34, be provided with circumferential restraint device between clutch 34 and the second-stage worm 33, back fan housing 13 is provided with can stir the switch 5 that clutch 34 axially slidably reciprocates along second-stage worm 33; Clutch 34 is respectively equipped with one-level gear 32 corresponding sides can engage the card platform 341,321 that forms transmission mutually.When fan did not need to shake the head, clutch 34 did not engage with one-level gear 32, and at this moment, the one-level gear 32 that is sheathed on the second-stage worm 33 dallies under the driving of one-level worm screw 31; When needs are shaken the head, operating switch 5, switch 5 is stirred clutch 34 and is moved along the axis direction of second-stage worm 33, clutch 34 is engaged mutually near one-level gear 32 and with one-level gear 32, one-level gear 32 drives clutch 34 and rotates, and be provided with circumferential constraint between clutch 34 and the second-stage worm 33, the also synchronous rotation work of second-stage worm 33 and other connected element, fan head swinging swing work.

In order to make engaging and disengaging gear when work sensitive more, reliable, the card platform 341,321 of clutch and one-level gear respectively is the triangular shape fixture block by at least two and forms, the interlock contact position is a straight flange 342,322, and the Ka Tai outer end is tip 343,323, and the back side, interlock position is hypotenuse 344,324., above-mentioned clamping close device has not only improved sensitivity, and is faster during two pointed end engagings, and avoided engaging moment area of contact excessive, stuck situation occurs.

Circumferentially the linkage structure of restraint device can have multiple mode, and is preferred, establishes in clutch and offers axial groove 345, and second-stage worm is provided with latch 331, and clutch axial groove when doing entangles latch and slidably reciprocates.Another kind of mode of execution, circumferentially restraint device also can adopt the linkage structure of spline and keyway.

Jacket casing on being directly installed on column, in order to make and easy to assembly, also can on column, install intermediate connector additional, utilize this intermediate connector that jacket casing is installed, column 2 tops are connected with jacket casing 4 by intermediate connector 24, the bottom of intermediate connector 24 is stretched in the column 2 and is utilized screw to fix, and intermediate connector 24 tops are provided with the anti-limit 25 that prevents that jacket casing 4 from upwards throwing off.

The above is the preferred embodiment of the present invention, and it does not constitute limiting the scope of the invention, so long as realize that with essentially identical means purpose of the present invention all should belong to protection scope of the present invention.

Claims

1. the fan that has inner head-shaking device, it is characterized in that: comprise main body (1), main body (1) is provided with the cavity that fan component is installed, fan component comprises travel(l)ing rest (11), travel(l)ing rest (11) outside is fixed with forward and backward fan housing (12,13), and the center of travel(l)ing rest (11) is motor casing (14), and motor casing (14) is equipped with motor (3), main body (1) inner chamber is provided with the vertical columns (2) of hollow, and column (2) is connected with motor casing (14); The motor rear portion is provided with reducing gear, and the terminal shaft of described reducing gear stretches out downwards, and terminal shaft is connected with crank arm (36), and crank arm (36) are connected with fork (37), and the length of fork (37) is greater than crank arm (36); One is sheathed on the jacket casing (4) on column (2) top, jacket casing (4) outside has eccentric projection (41), the other end of fork (37) is connected with this eccentric projection (41) by pivot pin, jacket casing (4) inner surface is evenly distributed with the vertical muscle (42) of convex, column (2) top is provided with transverse holes (21), transverse holes is equipped with spring (22), and spring (22) end is placed with steel ball (23), and spring (22) pushes up steel ball (23) to jacket casing (4) inner surface.

2. the fan with inner head-shaking device according to claim 1 is characterized in that: described transverse holes (21) is a cross through hole, and spring (22) two ends all are placed with steel ball (23).

3. the fan with inner head-shaking device according to claim 1, it is characterized in that: described reducing gear comprises the two-stage worm drive, motor (3) drives one-level worm screw (31), one-level worm screw (31) and one-level gear (32) engagement, one-level gear (32) is movably set in second-stage worm (33) front portion, second-stage worm (33) front portion also is arranged with clutch (34), be provided with circumferential restraint device between clutch (34) and the second-stage worm (33), back fan housing (13) is provided with can stir the switch (5) that clutch (34) axially slidably reciprocates along second-stage worm (33); Clutch (34) is respectively equipped with the corresponding side of one-level gear (32) can engage the Ka Tai (341,321) that forms transmission mutually.

4. the fan with inner head-shaking device according to claim 2, it is characterized in that: the Ka Tai of clutch and one-level gear (341,321) respectively is the triangular shape fixture block by at least two and forms, the interlock contact position is straight flange (342,322), the Ka Tai outer end is most advanced and sophisticated (343,323), and the back side, interlock position is hypotenuse (344,324).

5. the fan with inner head-shaking device according to claim 2 is characterized in that: described circumferential restraint device comprises: establish in the clutch and offer axial groove (345), second-stage worm is provided with latch (331).

6. the fan with inner head-shaking device according to claim 2 is characterized in that: described circumferential restraint device is spline and keyway linkage structure.

7. the fan with inner head-shaking device according to claim 1, it is characterized in that: column (2) top is connected with jacket casing (4) by intermediate connector (24), the bottom of described intermediate connector (24) is stretched in the column (2) and is utilized screw to fix, and intermediate connector (24) top is provided with the anti-limit (25) that prevents that jacket casing (4) from upwards throwing off.