A stepless angle-variable shaking device and method for electric fan

Abstract

The present invention discloses a stepless variable angle shaking device for electric fans, including a main structure, a driving unit and a swinging structure; the driving unit is fixedly arranged in the left end of the main structure, the swinging structure is fixedly arranged in the right end of the main structure, and the swinging structure is connected to the driving unit. The present invention relates to the technical field of electric fans. The present invention has a stepless speed regulation function: through an adjustable stepless component, the transmission ratio between the two stepless components can be adjusted, thereby adjusting the rotation speed of the stepless component. This stepless speed regulation function allows the fan's shaking speed to be continuously adjusted according to user needs, providing higher flexibility and comfort; by adjusting the rotation speed of the stepless component and the rotation diameter of the reciprocating rod, the connection inclination angle of the transmission arm can be changed, thereby changing the swing angle range of the machine box. This means that users can adjust the fan's shaking angle as needed to adapt to different usage scenarios and needs.

Description

Technical Field

[0001] The invention relates to the technical field of electric fans, and in particular to a stepless angle-variable shaking head device and method for electric fans. Background Art

[0002] Electric fan is also called fan or blower. It is a household appliance that uses an electric motor to drive the blades to rotate to accelerate the circulation of air. It is mainly used for cooling and circulating air. It is widely used in homes, classrooms, offices, shops, hospitals, hotels and other places.

[0003] Common household electric fans are essentially axial flow fans, that is, the direction of wind flow is parallel to the rotating axis of the fan blades; the head of the fan can swing to achieve a wider range of blowing use; the existing fan shaking head mostly uses a simple connecting rod mechanism to swing back and forth through the transmission of the main shaft motor, and it is impossible to adjust the range of the swing angle, and can only achieve a swing back after a certain angle. At the same time, the swing speed is also limited by the internal transmission mechanism. Therefore, the fan shaking head design needs to be developed and improved. This paper designs a stepless variable angle shaking head device for electric fans. Summary of the invention

[0004] The object of the present invention is to provide a stepless angle-variable shaking head device and method for an electric fan, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above-mentioned problem, the present invention provides the following technical solution: a stepless variable angle shaking device applied to an electric fan, comprising a main structure, a driving unit and a swinging structure; the driving unit is fixedly arranged in the left end of the main structure, the swinging structure is fixedly arranged in the right end of the main structure, and the swinging structure is connected to the driving unit.

[0006] Preferably, the main structure includes a machine base, a bearing base, a transfer rod, a transmission arm, a reciprocating rod, a machine box, a partition, a second bearing, a locking rod and a baffle;

[0007] One end of the bearing seat is movably arranged on the machine base, and the other end of the bearing seat is a truncated cone structure. A pair of first bearings are symmetrically arranged on the upper wall of the other end of the bearing seat, one end of the transfer rod is fixedly inserted in one of the first bearings, and one end of the transmission arm is fixedly inserted in the other first bearing. The reciprocating rod is Z-shaped, and one end of the reciprocating rod is movably connected to the other end of the transmission arm. The machine box is a box body without a front side wall, and a driving port is opened on the lower wall at the right end. The lower wall at the left end of the machine box is fixedly arranged on the other end of the transfer rod and is located above the transmission arm. The partition is fixedly arranged on the upper wall inside the machine box and is located at the left end of the driving port and above the lower wall of the box body. The second bearing is fixedly embedded on the center line of the upper wall at the right end of the machine box, and the second bearing is located on the right side of the partition. The locking rod is movably arranged on the upper wall of the machine box and is located on the left side of the second bearing. The left side of one end of the locking rod is arranged on the card slot, and the baffle is detachably buckled on the front side of the machine box.

[0008] Preferably, the driving unit comprises a dual-axis motor, a worm, a pull rod, a sleeve, a worm gear and a spring;

[0009] The dual-axis motor is fixedly arranged on the inner upper wall at the left end of the machine box, and the left and right output ends of the dual-axis motor are respectively movable and pass through the left side wall and the partition of the machine box. One end of the worm is fixedly connected to the right end output end of the dual-axis motor. One end of the pull rod is movable and passes through the upper wall of the machine box and is located on the left side of the second bearing and in front of the locking rod. The other end of the pull rod can be locked by the locking rod. One end of the sleeve is detachably connected to one end of the pull rod. Torsion blocks are symmetrically arranged on the left and right sides of the inner wall of the sleeve. The worm wheel is fixedly sleeved in the middle of the sleeve, and the worm wheel can be lifted and lowered by means of the pull rod. The spring is movably sleeved on the sleeve, and the two ends of the spring are respectively attached to the upper wall of the worm wheel and the inner upper wall of the machine box.

[0010] Preferably, the swing structure comprises a support frame, a pair of shafts, a pair of stepless components, a pair of electric push rods, a pair of toggle frames and a transmission belt;

[0011] One end of the support frame is fixedly arranged on the rear side wall of the machine box, and the middle part of the other end of the support frame is embedded in the third bearing, the middle part of the third bearing is opposite to the sleeve, one end of one of the shaft rods is fixedly inserted in the second bearing and is located in the machine box, and the left and right side walls of the other shaft rod are provided with torsion grooves that match the torsion block of the inner wall of the sleeve, and the other shaft rod is fixedly passed through the middle part of the third bearing at the other end of the support frame, and the top end is movably inserted in the bottom end of the sleeve, a pair of the stepless components are respectively fixedly sleeved on the bottom ends of the shaft rods, and are respectively located below the support frame, one ends of the pair of electric push rods are respectively fixedly arranged on the upper wall of the machine box, and are respectively located on the right side of one of the stepless components and the rear side of the other stepless component, the electric push rods are both located on the right side of the support frame, a pair of toggle frames are both concave, a pair of toggle frames are respectively arranged on the telescopic ends of the electric push rods, and the toggle frames are movably connected with the stepless components, and the transmission belts are respectively movably sleeved on the stepless components.

[0012] Preferably, the stepless assembly includes a pulley, an adjustment plate, a plurality of flip seats, a plurality of linkage rods, two pairs of balancing seats and two pairs of shaft adjustment arms;

[0013] The pulley is an H-shaped structure, and its middle diameter is smaller than the diameter at both ends and the middle part is concave. The upper and lower side walls of the pulley are equidistantly provided with shaft adjustment grooves. The pulley is fixedly mounted on the shaft rod and is located below the support frame. The adjusting plate is a circular structure, and a linkage groove corresponding to one of the shaft adjustment grooves is opened in the middle of the front end. The adjusting plate is movably mounted on the shaft rod and is located below the pulley. The adjusting plate is located in the driving port of the lower wall of the right end of the machine box. Several flip seats are equidistantly arranged on the middle part of the upper wall of the adjusting plate and the middle part of the lower wall of the pulley, and the flip seats correspond to the shaft adjustment grooves respectively. One ends of several linkage rods are respectively movably connected to the flip seats, and the other ends of the linkage rods are relatively inclined. Two pairs of balancing seats are respectively movably connected between the other ends of the corresponding linkage rods, and the balancing seats are located between the flip seats. The balancing seats can move forward and backward through the linkage rod. One ends of the two pairs of shaft adjustment arms are respectively movably passed through the shaft adjustment grooves of the upper and lower side walls of the pulley, and the other ends of the shaft adjustment arms are fixedly connected to the balance seat, and the shaft adjustment arm can be translated through the balance seat.

[0014] Preferably, the other end of one of the shaft adjustment arms is fixedly connected to the other end of the reciprocating rod, and the other end of the reciprocating rod movably passes through the linkage groove of the adjustment plate.

[0015] Preferably, the transmission belt is movably mounted on the shaft adjustment arm.

[0016] Preferably, the other end of the toggle frame is movably mounted on the adjustment plate and cannot contact the reciprocating rod and the shaft adjustment arm.

[0017] The method for using the stepless variable angle shaking device for an electric fan comprises the following steps:

[0018] Step 1: The worm wheel is lowered to the upper limit position of the shaft through the sleeve by the spring in the driving unit, so that it can be in contact with the worm and rotated with the help of the dual-axis motor driving the fan blades in the fan;

[0019] Step 2: One of the stepless components is driven to rotate by the worm gear, and the other stepless component is driven to rotate by the transmission belt. The rotation of the other stepless component drives the Z-shaped reciprocating rod to rotate in a circle, and the movable connection of the transmission arm is used to realize that the machine box can swing left and right within a certain range under the limited state;

[0020] Step 3: By adjusting the transmission ratio between the stepless components, the stepless components can be driven at the same speed, and the high speed drives the low speed or the low speed drives the high speed, so as to change the rotation speed of the reciprocating rod, and also change the rotation circle diameter distance of the reciprocating rod, thereby changing the swing angle adjustment and the swing speed adjustment of the machine box;

[0021] Step 4: Pull the pull rod to move the worm wheel upward on the shaft through the sleeve and compress the spring, then lock the upward pull rod by rotating the locking rod to cause the worm wheel to disengage from the worm, thereby stopping the swing of the machine box.

[0022] The present invention provides a stepless angle-variable shaking device and method for an electric fan, which has the following beneficial effects:

[0023] 1. The present invention has a stepless speed regulation function: through the adjustable stepless components, the transmission ratio between the two stepless components can be adjusted, thereby adjusting the rotation speed of the stepless components. This stepless speed regulation function allows the fan's shaking speed to be continuously adjusted according to user needs, providing higher flexibility and comfort.

[0024] 2. Adjustable swing angle: By adjusting the rotation speed of the stepless component and the rotation diameter of the reciprocating rod, the connection tilt angle of the transmission arm can be changed, thereby changing the swing angle range of the chassis. This means that users can adjust the fan's swing angle as needed to adapt to different usage scenarios and needs.

[0025] 3. Compact structure: This solution realizes the fan's shaking function through the coordinated work of components such as dual-axis motors, worms, worm wheels, transmission belts and stepless components. The overall structure is relatively compact, which reduces space occupancy and makes the fan lighter and easier to install.

[0026] 4. High transmission efficiency: The use of worm and worm gear transmission can provide higher transmission efficiency, while also ensuring the stability and reliability of transmission. This transmission method can reduce energy loss in the fan shaking mechanism and improve overall work efficiency.

[0027] 5. Easy operation: Users can adjust the fan's shaking speed and angle through simple operations, without the need for complicated electrical settings or tools, which also increases its service life.

[0028] 6. Strong adaptability: Since the swing angle and speed can be adjusted, the fan shaking mechanism of this solution can adapt to a variety of environments and usage conditions, and can provide suitable air circulation effects whether in home, office or other places. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the assembly structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the appearance structure of the present invention;

[0031] Figure 3 It is a schematic diagram showing the assembly structure of the present invention;

[0032] Figure 4 It is a schematic diagram of the split structure of the main structure of the present invention;

[0033] Figure 5 It is a schematic diagram of the split structure of the drive unit of the present invention;

[0034] Figure 6 It is a schematic diagram of the split structure of the swing structure of the present invention;

[0035] Figure 7 It is a schematic diagram of the partial enlarged structure of A of the present invention;

[0036] Figure 8 It is a schematic diagram of the partial enlarged structure of B of the present invention;

[0037] Fig. 9 It is a schematic diagram of the partially enlarged structure of position C of the present invention;

[0038] Fig.10 It is a schematic diagram of the local enlarged structure of location D of the present invention.

[0039] In the figure: 1, main structure, 10, machine base, 11, bearing seat, 12, adapter rod, 13, transmission arm, 14, reciprocating rod, 15, machine box, 16, partition, 17, second bearing, 18, locking rod, 19, baffle, 2, drive unit, 21, dual-axis motor, 22, worm, 23, pull rod, 24, sleeve, 25, worm gear, 26, spring, 3, swing structure, 31, support frame, 32, shaft, 33, stepless component, 331, pulley, 332, adjustment plate, 333, flip seat, 334, connecting rod, 335, balance seat, 336, shaft adjustment arm, 34, electric push rod, 35, toggle frame, 36, transmission belt, 4, first bearing, 5, third bearing, 6, drive port, 7, shaft adjustment slot, 8, connecting slot. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-10 The present invention provides a technical solution: a stepless angle-variable shaking device for an electric fan, comprising a main structure 1, a driving unit 2 and a swinging structure 3; the driving unit 2 is fixedly arranged in the left end of the main structure 1, the swinging structure 3 is fixedly arranged in the right end of the main structure 1, and the swinging structure 3 is connected to the driving unit 2; the driving unit 2 and the swinging structure 3 are carried by the main structure 1, power transmission is achieved through the driving structure, and the swinging structure 3 can be driven to swing with the help of the power of the driving unit 2.

[0042] The following are the models and functions of the electrical components in this case:

[0043] Dual-axis motor: This is a prior art and any motor that is suitable for this solution can be used.

[0044] Electric push rod: It is a prior art and any electric push rod applicable to this solution can be used.

[0045] As a further solution of the present invention, the main structure 1 includes a machine base 10, a bearing base 11, a transfer rod 12, a transmission arm 13, a reciprocating rod 14, a machine box 15, a partition 16, a second bearing 17, a locking rod 18 and a baffle 19;

[0046] One end of the bearing seat 11 is movably arranged on the machine base 10, and the other end of the bearing seat 11 is a truncated cone structure. A pair of first bearings 4 are symmetrically arranged on the upper wall of the other end of the bearing seat 11. One end of the transfer rod 12 is fixedly inserted in one of the first bearings 4. One end of the transmission arm 13 is fixedly inserted in the other first bearing 4. The reciprocating rod 14 is Z-shaped, and one end of the reciprocating rod 14 is movably connected to the other end of the transmission arm 13. The machine box 15 is a box body without a front side wall, and a driving port 6 is opened on the lower wall of the right end. The lower wall of the left end of the machine box 15 is fixedly arranged on the other end of the transfer rod 12 and is located above the transmission arm 13. The plate 16 is fixedly arranged on the inner upper wall of the machine box 15, and is located at the left end of the drive port 6 and above the lower wall of the box body. The second bearing 17 is fixedly embedded on the center line of the upper wall of the right end of the machine box 15, and the second bearing 17 is located on the right side of the partition 16. The locking rod 18 is movably arranged on the upper wall of the machine box 15, and is located on the left side of the second bearing 17. The left side of one end of the locking rod 18 is arranged in the card slot, and the baffle 19 is detachably buckled on the front side of the machine box 15; it can be placed through the machine base 10, and the machine box 15 can be supported by the transfer rod 12 and rotated with the help of the first bearing 4, and the reciprocating rod 14 and the transmission arm 13 are movably connected to each other for transmission.

[0047] As a further solution of the present invention, the driving unit 2 includes a dual-axis motor 21, a worm 22, a pull rod 23, a sleeve 24, a worm wheel 25 and a spring 26;

[0048] The double-axis motor 21 is fixedly arranged on the upper inner wall at the left end of the machine box 15, and the left and right output ends of the double-axis motor 21 are respectively movable and penetrate the left side wall of the machine box 15 and the partition 16, one end of the worm 22 is fixedly connected to the right end output end of the double-axis motor 21, one end of the pull rod 23 is movable and penetrates the upper wall of the machine box 15 and is located on the left side of the second bearing 17 and in front of the locking rod 18, the other end of the pull rod 23 can be locked by the locking rod 18, one end of the sleeve 24 is detachably connected to one end of the pull rod 23, and the inner wall of the sleeve 24 is symmetrically provided with torsion blocks on the left and right sides. The wheel 25 is fixedly sleeved in the middle of the sleeve 24, and the worm wheel 25 can be raised and lowered by means of the pull rod 23. The spring 26 is movably sleeved on the sleeve 24, and the two ends of the spring 26 are respectively attached to the upper wall of the worm wheel 25 and the upper wall inside the machine box 15; the sleeve 24 and the worm wheel 25 can be pulled up and moved by the pull rod 23, and the worm wheel 25 can be separated from the worm 22 by means of the locking rod 18. The worm wheel 25 can be pressed down by the spring 26 to maintain a stable contact transmission with the worm 22, and the worm wheel 25 can be driven to rotate through the worm 22 by the dual-axis motor 21.

[0049] As a further solution of the present invention, the swing structure 3 includes a support frame 31, a pair of shafts 32, a pair of stepless components 33, a pair of electric push rods 34, a pair of toggle frames 35 and a transmission belt 36;

[0050] One end of the support frame 31 is fixedly set on the rear side wall of the machine box 15, and the middle part of the other end of the support frame 31 is embedded in the third bearing 5, and the middle part of the third bearing 5 is opposite to the sleeve 24. One end of one shaft rod 32 is fixedly inserted in the second bearing 17 and is located in the machine box 15. The left and right side walls of the other shaft rod 32 are provided with torsion grooves that fit with the torsion block on the inner wall of the sleeve 24. The other shaft rod 32 is fixedly passed through the middle part of the third bearing 5 at the other end of the support frame 31, and the top end is movably inserted in the bottom end of the sleeve 24. A pair of stepless components 33 are respectively fixedly sleeved on the bottom ends of the shaft rods 32 and are respectively located below the support frame 31. One end of a pair of electric push rods 34 is respectively fixedly set On the inner upper wall of the machine box 15, and respectively located on the right side of one of the stepless components 33 and the rear side of the other stepless component 33, the electric push rods 34 are all located on the right side of the support frame 31, and a pair of toggle frames 35 are both concave. A pair of toggle frames 35 are respectively arranged on the telescopic ends of the electric push rods 34, and the toggle frames 35 are movably connected with the stepless components 33, and the transmission belts 36 are respectively movably mounted on the stepless components 33; through the support of the support frame 31, the worm gear 25 and the sleeve 24 can be rotated to drive the shaft rod 32 to rotate on the support frame 31, thereby driving one of the stepless components 33 to rotate, and the other stepless component 33 can be driven to rotate through the connection of the transmission belt 36.

[0051] As a further solution of the present invention, the stepless assembly 33 includes a pulley 331, an adjustment plate 332, a plurality of flip seats 333, a plurality of linkage rods 334, two pairs of balancing seats 335 and two pairs of shaft adjustment arms 336;

[0052] The pulley 331 is an H-shaped structure, and its middle diameter is smaller than the diameters at both ends and the middle part is concave. The upper and lower side walls of the pulley 331 are equidistantly provided with shaft adjustment grooves 7. The pulley 331 is fixedly mounted on the shaft rod 32 and is located below the support frame 31. The adjustment plate 332 is a circular structure, and a linkage groove 8 corresponding to one of the shaft adjustment grooves 7 is opened in the middle of the front end. The adjustment plate 332 is movably mounted on the shaft rod 32 and is located below the pulley 331. The adjustment plate 332 is located in the driving port 6 of the lower wall of the right end of the machine box 15. A number of flip seats 333 are equidistantly arranged in the middle of the upper wall of the adjustment plate 332 and the middle of the lower wall of the pulley 331, and the flip seats 333 correspond to the shaft adjustment grooves 7 respectively. One end of a number of linkage rods 334 is movably connected to the flip seats 333 respectively, and the other end of the linkage rod 334 is relatively inclined. Two pairs of balancing seats 335 are movably connected to the corresponding linkage seats 335 respectively. The balancing seat 335 is located between the other ends of the movable rod 334 and the balancing seat 335. The balancing seat 335 can be moved forward and backward by the connecting rod 334. One end of the two pairs of adjustment arms 336 respectively movably passes through the adjustment slots 7 on the upper and lower side walls of the pulley 331, and the other end of the adjustment arm 336 is fixedly connected to the balancing seat 335, and the adjustment arm 336 can be translated by the balancing seat 335; the pulley 331 is fixed and limited by the shaft rod 32, and the adjustment plate 332 can be limited below the pulley 331 by the connecting rod 334 movably connected between the flip seat 333 and the balancing seat 335, and the distance between the adjustment plate 332 and the pulley 331 can be adjusted by flipping the connecting rod 334, and the adjustment arm 336 is driven to rise and fall and move forward and backward in the adjustment slot 7, so as to adjust the diameter of the middle part of the pulley 331, that is, to adjust the transmission ratio between the two sets of stepless components 33.

[0053] As a further solution of the present invention, the other end of one of the adjustment arms 336 is fixedly connected to the other end of the reciprocating rod 14, and the other end of the reciprocating rod 14 is movably inserted into the linkage groove 8 of the adjustment plate 332, so as to realize the synchronous adjustment of the rotation diameter of the reciprocating rod 14 and the change of the swing angle when adjusting the transmission ratio according to design requirements.

[0054] As a further solution of the present invention, the transmission belt 36 is movably mounted on the shaft adjustment arm 336 to achieve transmission ratio adjustment according to design requirements.

[0055] As a further solution of the present invention, the other end of the toggle frame 35 is movably mounted on the adjustment plate 332 and cannot contact the reciprocating rod 14 and the adjustment arm 336. It is used for design requirements to adjust the position of the adjustment arm 336 by lifting and lowering the toggle frame 35 without obstructing the rotation of the adjustment arm 336 and the reciprocating rod 14.

[0056] Working principle:

[0057] The base 10 in the main structure 1 is placed horizontally, and the inclination angle of the machine box 15 can be turned on the base through the bearing seat 11 to adjust the up and down angle of the air blowing after the fan blades are installed; and the front side of the machine box 15 can be detachably shielded by the baffle 19, which is convenient for maintenance and installation of the swing structure 3 and the drive unit 2;

[0058] By driving the double-axis motor 21, the fan blades can be installed on its left end for blowing, because the double-axis motor 21 is separated and carries the double axes by the left side wall of the machine box 15 and the partition 16; when the double-axis motor 21 is driven, the worm wheel 25 on the sleeve 24 is pressed down by the spring 26 and limited by the pull rod 23, so that the worm wheel 25 can contact with the worm 22 for transmission; that is, the double-axis motor 21 drives the worm 22 to rotate, and the worm wheel 25 is driven to rotate by the worm 22. The rotation of the worm wheel 25 will drive one of the shaft rods 32 to rotate by the third bearing 5 on the support frame 31 through the sleeve 24, and then realize the rotation of one of the stepless components 33; through the connection of the transmission belt 36, it is realized to drive another group of stepless components 33 to rotate by the shaft rod 32 on the second bearing 17;

[0059] The rotation of the other stepless component 33 will drive the reciprocating rod 14 to rotate in a circle. Since the reciprocating rod 14 is movably connected to the transmission arm 13, and the transmission arm 13 is movably connected to the bearing seat 11 through the first bearing 4, the swing limit can be performed. That is, when the reciprocating rod 14 rotates in a circle, the machine box 15 will be forced to move the reciprocating rod 14 to a certain angle on the first bearing 4 to achieve swing;

[0060] When adjustment is needed, the electric push rod 34 can be driven to extend or contract respectively, and the adjustment plate 332 can be driven to move up and down by the toggle frame 35 to adjust the spacing relative to the pulley 331. The adjustment plate 332 and the pulley 331 are connected and limited by the linkage rod 334 between the flip seat 333 and the balance seat 335. When the adjustment plate 332 is lifted or lowered, the linkage rod 334 will be driven to flip a certain angle, and the balance seat 335 will be driven to move back and forth, thereby driving the correspondingly connected shaft adjustment arm 336 to move back and forth in the shaft adjustment slot 7 to adjust the spacing of the shaft adjustment arm 336 located on one pulley 331, that is, changing the diameter of the middle part of the pulley 331, thereby changing the transmission ratio of the two sets of relative stepless components 33 and achieving different rotation speeds;

[0061] Finally, the speed of driving the reciprocating rod 14 located below the driving port 6 to rotate is changed, thereby changing the swing speed of the machine box 15; as the position of the adjusting arm 336 moves back and forth, the position of the reciprocating rod 14 connected to one of the adjusting arms 336 is also relatively changed, and the connecting end of the reciprocating rod 14 and the adjusting arm 336 also moves through the linkage groove 8, thereby changing the circumferential rotation diameter range of the connecting end of the reciprocating rod 14 and the transmission arm 13, thereby changing the angle range of the machine box 15 under force swing.

[0062] When swinging is not needed, the pull rod 23 can be pulled up to drive the sleeve 24 to slide upward on one of the shafts 32. The sleeve 24 always remains connected to the shaft 32, but as the sleeve 24 rises, the worm wheel 25 is also relatively raised and thus disengaged from the meshing transmission with the worm 22, and the raised pull rod 23 is locked and limited by rotating the locking rod 18, at which time the spring 26 is compressed; thus, the worm wheel 25 and the worm 22 cannot transmit, that is, the machine box 15 cannot swing.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stepless angle-variable shaking device for electric fans, characterized in that: It comprises a main structure (1), a driving unit (2) and a swinging structure (3); the driving unit (2) is fixedly arranged in the left end of the main structure (1), the swinging structure (3) is fixedly arranged in the right end of the main structure (1), and the swinging structure (3) is connected to the driving unit (2); The main structure (1) comprises a machine base (10), a bearing base (11), a transfer rod (12), a transmission arm (13), a reciprocating rod (14), a machine box (15), a partition (16), a second bearing (17), a locking rod (18) and a baffle (19); One end of the bearing seat (11) is movably arranged on the machine base (10), and the other end of the bearing seat (11) is a truncated cone structure. A pair of first bearings (4) are symmetrically arranged on the upper wall of the other end of the bearing seat (11). One end of the transfer rod (12) is fixedly inserted into one of the first bearings (4). One end of the transmission arm (13) is fixedly inserted into the other first bearing (4). The reciprocating rod (14) is Z-shaped. One end of the reciprocating rod (14) is movably connected to the other end of the transmission arm (13). The machine box (15) is a box body without a front side wall, and a driving port (6) is opened on the lower wall of the right end. The machine box (15) 5) The lower wall at the left end is fixedly arranged on the other end of the transfer rod (12) and is located above the transmission arm (13); the partition (16) is fixedly arranged on the inner upper wall of the machine box (15) and is located at the left end of the drive port (6) and above the lower wall of the box body; the second bearing (17) is fixedly embedded on the center line of the upper wall at the right end of the machine box (15), and the second bearing (17) is located on the right side of the partition (16); the locking rod (18) is movably arranged on the upper wall of the machine box (15) and is located on the left side of the second bearing (17); the left side of one end of the locking rod (18) is arranged in a card slot; the baffle (19) is detachably buckled on the front side of the machine box (15); The driving unit (2) comprises a dual-axis motor (21), a worm (22), a pull rod (23), a sleeve (24), a worm wheel (25) and a spring (26); The dual-axis motor (21) is fixedly arranged on the upper inner wall at the left end of the machine box (15), and the left and right output ends of the dual-axis motor (21) are respectively movable and penetrate the left side wall of the machine box (15) and the partition (16), one end of the worm (22) is fixedly connected to the right end output end of the dual-axis motor (21), one end of the pull rod (23) is movable and penetrates the upper wall of the machine box (15) and is located on the left side of the second bearing (17) and on the front side of the locking rod (18), and the other end of the pull rod (23) can be passed through The locking rod (18) is locked, one end of the sleeve (24) is detachably connected to one end of the pull rod (23), the inner wall of the sleeve (24) is symmetrically provided with torsion blocks on the left and right sides, the worm gear (25) is fixedly sleeved in the middle of the sleeve (24), and the worm gear (25) can be lifted and lowered by means of the pull rod (23), the spring (26) is movably sleeved on the sleeve (24), and the two ends of the spring (26) are respectively attached to the upper wall of the worm gear (25) and the inner upper wall of the machine box (15); The swing structure (3) comprises a support frame (31), a pair of shafts (32), a pair of stepless components (33), a pair of electric push rods (34), a pair of toggle frames (35) and a transmission belt (36); One end of the support frame (31) is fixedly arranged on the rear side wall of the machine box (15), and the middle part of the other end of the support frame (31) is embedded in the third bearing (5), and the middle part of the third bearing (5) is opposite to the sleeve (24). One end of one of the shaft rods (32) is fixedly inserted in the second bearing (17) and is located in the machine box (15). The left and right side walls of the other shaft rod (32) are both provided with torsion grooves that match the torsion blocks on the inner wall of the sleeve (24). The other shaft rod (32) is fixedly passed through the middle part of the third bearing (5) at the other end of the support frame (31), and the top end is movably inserted in the bottom end of the sleeve (24). A pair of the stepless components ( 33) are respectively fixedly sleeved on the bottom end of the shaft rod (32) and are respectively located below the support frame (31); one end of a pair of electric push rods (34) are respectively fixedly arranged on the inner upper wall of the machine box (15) and are respectively located on the right side of one of the stepless components (33) and the rear side of the other stepless component (33); the electric push rods (34) are both located on the right side of the support frame (31); the pair of toggle frames (35) are both concave; the pair of toggle frames (35) are respectively arranged on the telescopic ends of the electric push rods (34), and the toggle frames (35) are movably connected to the stepless components (33); the transmission belts (36) are respectively movably sleeved on the stepless components (33); The stepless assembly (33) comprises a pulley (331), an adjustment plate (332), a plurality of flip seats (333), a plurality of linkage rods (334), two pairs of balancing seats (335) and two pairs of shaft adjustment arms (336); The pulley (331) is an H-shaped structure, and its middle diameter is smaller than the diameters at both ends and the middle part is concave. The upper and lower side walls of the pulley (331) are equidistantly provided with shaft adjustment grooves (7). The pulley (331) is fixedly sleeved on the shaft rod (32) and is located below the support frame (31). The adjustment plate (332) is a circular structure, and a linkage groove (8) corresponding to one of the shaft adjustment grooves (7) is opened in the middle of the front end. The adjustment plate (332) is movably sleeved on the shaft rod (32) and is located below the pulley (331). The adjustment plate (332) is located in the driving port (6) of the lower wall of the right end of the machine box (15). A plurality of flip seats (333) are equidistantly arranged in the middle of the upper wall of the adjustment plate (332) and the lower wall of the pulley (331). The turning seats (333) are respectively corresponding to the shaft adjustment grooves (7), one end of a plurality of the linkage rods (334) are respectively movably connected to the turning seats (333), and the other end of the linkage rods (334) is relatively inclined, two pairs of the balancing seats (335) are respectively movably connected between the other ends of the corresponding linkage rods (334), and the balancing seats (335) are located between the turning seats (333), and the balancing seats (335) can move forward and backward through the linkage rods (334), one end of the two pairs of shaft adjustment arms (336) are respectively movably passed through the shaft adjustment grooves (7) on the upper and lower side walls of the pulley (331), and the other end of the shaft adjustment arm (336) is fixedly connected to the balancing seat (335), and the shaft adjustment arm (336) can translate through the balancing seat (335).

2. The stepless angle-variable shaking device for electric fans according to claim 1, characterized in that: The other end of one of the shaft adjustment arms (336) is fixedly connected to the other end of the reciprocating rod (14), and the other end of the reciprocating rod (14) movably penetrates the linkage groove (8) of the adjustment plate (332).

3. The stepless angle-variable shaking device for electric fans according to claim 2, characterized in that: The transmission belt (36) is movably mounted on the shaft adjustment arm (336).

4. The stepless angle-variable shaking device for electric fans according to claim 3, characterized in that: The other end of the toggle frame (35) is movably mounted on the adjustment plate (332) and cannot contact the reciprocating rod (14) and the shaft adjustment arm (336).

5. The method for using the stepless angle-variable oscillating device for an electric fan according to claim 4, characterized in that: The following steps are involved: Step 1: The worm wheel (25) is lowered to the upper limit position on the shaft (32) through the sleeve (24) by the spring (26) in the driving unit (2), so that the worm wheel (25) can be in contact with the worm (22) and rotated with the help of the double-axis motor (21) driving the fan blades in the fan; Step 2: one of the stepless components (33) is driven to rotate by the worm gear (25), and the other stepless component is driven to rotate by the transmission belt (36). The rotation of the other stepless component (33) drives the Z-shaped reciprocating rod (14) to rotate in a circle, and the movable connection of the transmission arm (13) is used to realize that the machine box (15) can swing left and right within a certain range in a limited state; Step 3: By adjusting the transmission ratio between the stepless components (33), the stepless components (33) can be driven at the same speed, and high speed drives low speed or low speed drives high speed, so as to change the rotation speed of the reciprocating rod (14), and at the same time change the rotation circle diameter distance of the reciprocating rod (14), thereby changing the swing angle adjustment and the swing speed adjustment of the machine box (15); Step 4: Pull the pull rod (23) to move the worm wheel (25) upward on the shaft (32) through the sleeve (24) and compress the spring (26), and then lock the upward pull rod (23) by rotating the lock rod (18), so that the worm wheel (25) is disengaged from the worm (22), thereby stopping the swing of the machine box (15).

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