CN217055671U

CN217055671U - Direct current low pressure desktop fan

Info

Publication number: CN217055671U
Application number: CN202220719331.0U
Authority: CN
Inventors: 张彦飞
Original assignee: Shenzhen Honestar Electronic Co ltd
Current assignee: Shenzhen Honestar Electronic Co ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-07-26
Anticipated expiration: 2032-03-30

Abstract

The utility model discloses a direct current low pressure desktop fan, including the pedestal, the circular slot has been seted up to the one end of pedestal top outer wall center department, and the pedestal is close to the center department of circular slot top outer wall and has seted up the arm groove, and the inside wall that the circular slot other end was kept away from in the arm groove has the support arm through damping pivot swing joint, and the inside of support arm is pegged graft and is had the bracing piece, and the center department of support arm both sides outer wall all sets up the locating hole that the equidistance is upper and lower structure and distributes. The utility model discloses the reference column is pegged graft in the inside of locating hole under the effect of spacing dish and scroll spring for the bracing piece can obtain fine location in the inside of support arm, simultaneously fine realization the lift adjustment of bracing piece, make the desktop fan can carry out lift adjustment as required, support arm and ring section of thick bamboo can agree with the inside of arm groove and circular slot respectively, make the fine realization of desktop fan folding, reduced the space occupancy of desktop fan.

Description

DC low-voltage desktop fan

Technical Field

The utility model relates to a desktop fan technical field, concretely relates to direct current low pressure desktop fan.

Background

The fan is a household appliance which uses a motor to drive blades to rotate so as to accelerate the circulation of air, and is mainly used for cooling, relieving summer heat and circulating air. The desk fan is small in size, can be generally placed on a desk for use, can provide cool feeling for a user in a short distance, and is widely applied to places such as families, offices and the outdoors.

If the grant bulletin number is CN214063340U, grant bulletin day is 2021.08.27's desktop fan, including the fan main part, its characterized in that fan main part rear hinge is provided with the support, the fixed soft magnetic suction plate that is provided with on the support, can dismantle on the soft magnetic suction plate and be provided with soft magnetic frame, the photo passes through soft magnetic frame fixes on the support.

Above-mentioned and in prior art, some station desks size is less, and the space is put to the desktop is little, uses the desktop fan after, generally just can not additionally put ornaments such as some photo frames, and the desktop fan can't carry out lift adjustment as required simultaneously, and the practicality is relatively poor. And the existing low-voltage desktop fan usually has only 5V voltage gear input, so that the voltage input cannot be finely controlled, and the selectable gear of the rotating speed is less.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model aims at providing a direct current low pressure desktop fan that can be convenient for accomodate, stability is high, the accurate control rotational speed.

To realize the technical purpose, the utility model discloses a scheme is: a direct-current low-voltage desktop fan comprises a pedestal, wherein a circular groove is formed in one end of the center of the outer wall of the top of the pedestal, an arm groove is formed in the center of the pedestal, which is close to the outer wall of the top of the circular groove, the inner side wall, far away from the other end of the circular groove, of the arm groove is movably connected with a support arm through a damping rotating shaft, a support rod is inserted into the support arm, positioning holes which are distributed in an upper-lower structure are formed in the centers of the outer walls of two sides of the support arm at equal intervals, column grooves are formed in the bottom ends, located at the centers of the outer walls of two sides of the interior of the support arm, of the support column are inserted with positioning columns, a limiting disc is welded at one end, located in the column grooves, of the positioning columns, a vortex spring is welded on the outer wall of the other side, far away from the positioning columns, the positioning columns are inserted into the positioning holes under the action of the limiting disc and the vortex springs, and a power supply socket is arranged on the pedestal;

the top end of the supporting rod is welded with a ring cylinder, and hollow screens are mounted on the inner walls of the two sides of the ring cylinder through bolts;

the welding of center department of ring section of thick bamboo inside wall has the support frame, and the axle center department of support frame installs the motor through the bolt, the output parallel key of motor is connected with the flabellum.

Preferably, the motor is a direct current motor, the motor is further electrically connected with a hall sensor, the hall sensor is electrically connected with a controller, and the controller is electrically connected to the power supply socket.

Preferably, the power supply socket is electrically connected to the PD charging head through a typeC-C charging wire, a dc step-down circuit is further electrically connected between the controller and the motor, and the Hall sensor is electrically connected to a Hall port of the controller.

Preferably, the annular cylinder is nested inside the circular groove, and the supporting arm is arranged inside the arm groove.

Preferably, a rectangular groove is formed in one side, close to the supporting arm, of the pedestal, a plug board is inserted into the rectangular groove, a limiting hole is formed in the center of the plug board, located on one side of the inside of the rectangular groove, and a limiting column inserted into the limiting hole is welded in the center of the inside of one side of the rectangular groove.

Preferably, the flashboard is located the welding on the outside wall of one side of rectangular channel inside and has been seted up the spout at the outside spring of spacing post, and the pedestal is close to and has seted up the rectangular channel on the top outer wall, the welding has the shifting block of inlaying and establishing in the spout inside on the top outer wall of flashboard.

Preferably, the outer wall of one side of the supporting arm, which is close to the inserting plate, is provided with two inserting grooves which are respectively distributed in the transverse direction and the vertical direction, and the inserting plate is inserted into the inserting grooves under the action of the spring and the limiting column.

The utility model has the advantages that: the utility model provides a direct current low pressure desktop fan, (1) through the reference column that sets up, the reference column is pegged graft in the inside of locating hole under the effect of spacing dish and volute spring for the bracing piece can obtain fine location in the inside of support arm, has realized the lift adjustment of bracing piece simultaneously fine, makes the desktop fan can carry out lift adjustment as required, novel structure, reasonable in design, the practicality is strong; (2) through the arranged inserting plate, the inserting plate slides along the rectangular groove under the action of the spring and the limiting column, so that the inserting plate can be inserted into the inserting groove, the stability of the supporting arm when the supporting arm is unfolded or wedged into the arm groove is well realized, the structure is reasonable, the stability is high, and the device is suitable for popularization; (3) through the circular groove and the arm groove, the supporting arm and the ring barrel can be respectively embedded into the arm groove and the circular groove, so that the desktop fan is well folded, and the space occupancy rate of the desktop fan is reduced. (4) The control circuit is simpler, a power switch circuit is directly removed, only the controller is required to sample the rotating speed, the PD charger is informed to output the specified voltage through a standard quick charging protocol, the high-voltage output or the low-voltage output can be selected according to the current rotating speed, and the wind speed control is more accurate and diversified.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the ring cylinder structure of the present invention;

FIG. 3 is a schematic view of the structure of the support arm of the present invention;

FIG. 4 is a schematic view of the slot structure of the present invention;

FIG. 5 is a schematic view of the rectangular groove structure of the present invention;

fig. 6 is a circuit block diagram of the present invention.

Description of reference numerals: 1. a pedestal; 2. a circular groove; 3. an arm slot; 4. a support arm; 5. a support bar; 6. a ring cylinder; 7. a support frame; 8. a motor; 9. a fan blade; 10. hollowing out the screen plate; 11. positioning holes; 12. a positioning column; 13. a column groove; 14. a limiting disc; 15. a volute spring; 16. inserting slots; 17. a rectangular groove; 18. inserting plates; 19. a limiting hole; 20. a limiting post; 21. a chute; 22. A spring; 23. shifting blocks; 24. and a power supply socket.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. In order to clearly and completely describe the technical scheme, the following embodiments are selected for illustration; the following embodiments are some of the embodiments of the present invention; based on this application, do not make other embodiments that obtain under the creative work prerequisite, all belong to the utility model discloses the scope of protection.

In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top/bottom", and other orientations and positional relationships are all based on the orientations and positional relationships shown in the drawings, and are only for the convenience of clarity of description of the embodiments, but do not indicate or imply that the devices or elements referred to must have specific orientations, and therefore, should not be construed as limiting the present application. Meanwhile, the terms "first" and "second" in the embodiments are used only for distinguishing the description purposes, and are not intended to indicate or imply relative importance.

As shown in figures 1-6, the embodiment of the present invention is a DC low-voltage desktop fan, which comprises a pedestal 1, a circular groove 2 is disposed at one end of the center of the outer wall of the top of the pedestal 1, and the pedestal 1 is provided with an arm groove 3 at the center close to the outer wall of the top of the circular groove 2, the inner side wall of the arm groove 3 far away from the other end of the circular groove 2 is movably connected with a supporting arm 4 through a damping rotating shaft, and the supporting arm 4 is inserted with a supporting rod 5, the centers of the outer walls of both sides of the supporting arm 4 are respectively provided with positioning holes 11 which are distributed in an upper and lower structure at equal intervals, the bottom ends of the supporting rods 5 at the centers of the outer walls at the two sides in the supporting arms 4 are respectively provided with a column groove 13, a positioning column 12 is inserted in the column groove 13, and one end of the positioning column 12, which is positioned in the column groove 13, is welded with a limiting disc 14, the outer wall of the other side of the limiting disc 14, which is far away from the positioning column 12, is welded with a volute spring 15, and the positioning column 12 is inserted into the positioning hole 11 under the action of the limiting disc 14 and the scroll spring 15.

The utility model provides a direct current low pressure desktop fan, which comprises a pedestal 1, a circular groove 2 is arranged at one end of the center of the outer wall at the top of the pedestal 1, an arm groove 3 is arranged at the center of the outer wall at the top of the circular groove 2, the inner side wall of the arm groove 3 far away from the other end of the circular groove 2 is movably connected with a supporting arm 4 through a damping rotating shaft, a supporting rod 5 is inserted in the supporting arm 4, positioning holes 11 which are distributed in an upper and lower structure at equal intervals are arranged at the center of the outer wall at two sides of the supporting arm 4, column grooves 13 are arranged at the bottom ends of the outer wall centers at two sides of the supporting arm 4, a positioning column 12 is inserted in the column grooves 13, a limiting disc 14 is welded at one end of the positioning column 12 positioned in the column grooves 13, a vortex spring 15 is welded on the outer wall at the other side of the limiting disc 14 far away from the positioning column 12, and the positioning column 12 is inserted in the positioning holes 11 under the action of the limiting disc 14 and the vortex spring 15, the positioning column 12 is inserted into the positioning hole 11 under the action of the limiting disc 14 and the volute spring 15, so that the supporting rod 5 can be well positioned in the supporting arm 4, the lifting adjustment of the supporting rod 5 is well realized, and the desktop fan can be lifted and adjusted as required.

The utility model provides a further embodiment, as shown in fig. 1 and fig. 2, the welding of the top of bracing piece 5 has a ring section of thick bamboo 6, and all install fretwork otter board 10 through the bolt on the inner wall of a ring section of thick bamboo 6 both sides, the welding of the center department of a ring section of thick bamboo 6 inside wall has support frame 7, and the axle center department of support frame 7 installs motor 8 through the bolt, motor 8's output parallel key is connected with flabellum 9, motor 8 can drive flabellum 9 and rotate, and the fine promotion of support frame 7 motor 8 stability when a ring section of thick bamboo 6 is inside.

In another embodiment, as shown in fig. 1, the ring tube 6 is nested inside the circular groove 2, and the support arm 4 is disposed inside the arm groove 3, and the support arm 4 and the ring tube 6 can be wedged inside the arm groove 3 and the circular groove 2 respectively, so that the desktop fan is folded well, and the space occupancy rate of the desktop fan is reduced.

The utility model provides a still another embodiment, as shown in fig. 4 and 5, rectangular channel 17 has been seted up to one side that pedestal 1 is close to support arm 4, and the inside grafting of rectangular channel 17 has picture peg 18, picture peg 18 is located the center department of the inside one side of rectangular channel 17 and has seted up spacing hole 19, and the welding of the inside center department in rectangular channel 17 one side has the spacing post 20 of grafting inside at spacing hole 19, spacing post 20 and the collocation use of spacing hole 19, make picture peg 18 can be more stable firm when the inside of rectangular channel 17 slides.

The utility model provides a further embodiment, motor 8 is direct current motor, motor 8 still electricity is connected with hall sensor, hall sensor electricity is connected with the controller, the controller electricity is connected to power supply socket 24. As shown in fig. 6, the power supply socket 24 is electrically connected to the PD charging head through a typeC-C charging wire, a dc step-down circuit is also electrically connected between the controller and the motor 8, and the Hall sensor is electrically connected to a Hall port of the controller. The PD charging head can output fine voltage in a range of 3.3V-21V, and the fine voltage is output every 10-20 mV. The design of the traditional fan controller is optimized, and a power switch circuit is directly removed; the controller judges the current rotating speed of the fan blades through the Hall sensor, informs the PD charger to output the specified voltage through a standard USB quick-charging protocol, and can select high-voltage output or low-voltage output according to the current rotating speed so that the target rotating speed meets the controlled requirement. The desktop fan is simple in circuit design and easy to produce. Meanwhile, the voltage output of the PD charger is fine, the wind speed control of the desktop fan is more accurate, fine multi-gear wind changing can be achieved, and natural wind can be simulated.

The utility model provides a further embodiment, as shown in fig. 4 and 5, picture peg 18 is located the welding on one side outer wall of rectangular channel 17 inside and has been cup jointed at the outside spring 22 of spacing post 20, and the pedestal 1 has seted up spout 21 on being close to the top outer wall of rectangular channel 17, the welding has the shifting block 23 of inlaying and establishing in spout 21 inside on the top outer wall of picture peg 18, shifting block 23 can drive picture peg 18 when spout 21 slides and slide along rectangular channel 17, and set up the anti-skidding stripe that is equidistant structural distribution on the top outer wall of shifting block 23.

The utility model provides a further embodiment, as shown in fig. 5, two slots 16 that are horizontal and vertical distribution respectively are seted up on the support arm 4 is close to one side outer wall of picture peg 18, and picture peg 18 pegs graft in the inside of slot 16 under spring 22 and spacing post 20's effect, picture peg 18 is convenient for insert the inside of slot 16 more when horizontal and vertical distribution's slot 16 makes support arm 4 agree with arm groove 3, thereby fine positioning action has been played support arm 4, thereby support arm 4 stability when arm groove 3 is inside has been promoted, picture peg 18 slides along rectangular channel 17 under spring 22 and spacing post 20's effect, make picture peg 18 can peg graft in the inside of slot 16, fine realization support arm 4 expand or agree with the stability when arm groove 3 is inside.

The working principle is as follows: an operator firstly dials the support arm 4 out of the arm groove 3, at the moment, the inserting plate 18 slides along the rectangular groove 17 under the action of the spring 22 and the limiting column 20, the inserting plate 18 can be inserted into the slot 16, the stability of the support arm 4 when the support arm 4 is unfolded or wedged into the arm groove 3 is well realized, when the desktop fan is lifted and lowered, the positioning column 12 is inserted into the positioning hole 11 under the action of the limiting disc 14 and the volute spring 15, the support rod 5 can be well positioned in the support arm 4, meanwhile, the lifting and lowering of the support rod 5 are well realized, the desktop fan can be lifted and lowered as required, the support arm 4 and the ring cylinder 6 can be wedged into the arm groove 3 and the circular groove 2 respectively, the desktop fan is well folded, and the space occupancy rate of the desktop fan is reduced. In addition, this application direct power switch circuit only needs simple controller and hall sensor sampling motor rotational speed, and rethread standard USB fills the agreement soon and tells the quick charger output appointed voltage, can select to be high voltage output or low-voltage output according to the height of current rotational speed, makes the target motor rotational speed satisfy controlled requirement.

Above, only be the preferred embodiment of the present invention, not be used for limiting the present invention, all the technical essence of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement made to the above embodiments.

Claims

1. A direct-current low-voltage desktop fan comprises a pedestal (1) and is characterized in that a circular groove (2) is formed in one end of the center of the outer wall of the top of the pedestal (1), arm grooves (3) are formed in the center of the outer wall of the top of the circular groove (2) close to the pedestal (1), the inner side wall, far away from the other end of the circular groove (2), of each arm groove (3) is movably connected with a supporting arm (4) through a damping rotating shaft, supporting rods (5) are inserted into the supporting arms (4), positioning holes (11) which are distributed in an up-and-down structure at equal intervals are formed in the centers of the outer walls of two sides of each supporting arm (4), column grooves (13) are formed in the bottoms of the centers of the outer walls of two sides of each supporting rod (5) located in the supporting arms (4), positioning columns (12) are inserted into the column grooves (13), and limiting discs (14) are welded at one ends, located in the column grooves (13), of the positioning columns (12), a volute spring (15) is welded on the outer wall of the other side, away from the positioning column (12), of the limiting disc (14), the positioning column (12) is inserted into the positioning hole (11) under the action of the limiting disc (14) and the volute spring (15), and a power supply socket (24) is arranged on the pedestal (1);

the top end of the support rod (5) is welded with a ring cylinder (6), and the inner walls of two sides of the ring cylinder (6) are respectively provided with a hollowed-out screen plate (10) through bolts;

the welding of center department of ring section of thick bamboo (6) inside wall has support frame (7), and the axle center department of support frame (7) installs motor (8) through the bolt, the flat key of output of motor (8) is connected with flabellum (9).

2. A direct current low voltage desk fan according to claim 1, wherein the motor (8) is a direct current motor, the motor (8) is further electrically connected with a hall sensor, the hall sensor is electrically connected with a controller, and the controller is electrically connected to a power supply socket (24).

3. A low voltage dc desk fan according to claim 2, wherein the power jack (24) is electrically connected to the PD charging head through typeC-C charging wire, and further electrically connected between the controller and the motor (8) is a dc voltage step-down circuit, and the Hall sensor is electrically connected to the Hall port of the controller.

4. A low dc pressure table top fan according to claim 1, wherein the ring cylinder (6) is nested inside the circular slot (2) and the support arms (4) are arranged inside the arm slots (3).

5. The direct-current low-voltage desktop fan is characterized in that a rectangular groove (17) is formed in one side, close to the supporting arm (4), of the pedestal (1), an inserting plate (18) is inserted into the rectangular groove (17), a limiting hole (19) is formed in the center of one side, located inside the rectangular groove (17), of the inserting plate (18), and a limiting column (20) inserted into the limiting hole (19) is welded in the center of one side, located inside the rectangular groove (17).

6. The direct-current low-voltage desktop fan is characterized in that a spring (22) sleeved outside a limiting column (20) is welded on the outer wall of one side, located inside a rectangular groove (17), of the insertion plate (18), a sliding groove (21) is formed in the outer wall, close to the top of the rectangular groove (17), of the pedestal (1), and a shifting block (23) embedded inside the sliding groove (21) is welded on the outer wall of the top of the insertion plate (18).

7. The direct-current low-voltage desktop fan is characterized in that two slots (16) which are respectively distributed transversely and vertically are formed in the outer wall of one side, close to the inserting plate (18), of the supporting arm (4), and the inserting plate (18) is inserted into the slots (16) under the action of a spring (22) and a limiting column (20).