CN210829798U

CN210829798U - Portable folding fan

Info

Publication number: CN210829798U
Application number: CN201921594013.0U
Authority: CN
Inventors: 邹进山; 樊波; 邓先顺
Original assignee: Shenzhen Jing Xin Tai Houseware Co ltd
Current assignee: Shenzhen Jing Xin Tai Houseware Co ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-06-23
Anticipated expiration: 2029-09-24

Abstract

The utility model relates to a portable folding fan, which comprises a base module, a connecting rod and a fan blade module, wherein the base module is used for supporting the fan and providing power supply for a motor of the fan; one end of the connecting rod is rotatably connected to the base module through a first rotating mechanism, and the other end of the connecting rod is rotatably connected to the second fan blade module through a second rotating mechanism; the base module and the fan blade module have the same vertical projection shape, so that when the connecting rod and the fan blade module enter a folded state through the first rotating mechanism and the second rotating mechanism respectively relative to the base module and the connecting rod, the directions of the first rotating mechanism and the second rotating mechanism are opposite, the fan blade module and the base module are completely overlapped, and the space occupied by the fan blade module in the folded state is saved. Implement the utility model discloses a portable folding fan has following beneficial effect: so that the area of the folded fan is minimized.

Description

Portable folding fan

Technical Field

The utility model relates to an electrical apparatus field, more specifically say, relate to a portable folding fan.

Background

Fans have been widely used, and in most cases, the fans use an indoor ac power supply to drive a motor to rotate. There are also fans driven by direct current, which generally rectify alternating current to obtain direct current power. In these cases, it is necessary to connect an indoor ac power supply when the fan is used. In recent years, small fans have been developed, which are powered by batteries inside the fans and have small shapes, and mainly solve the problem that the fans can be used for cooling when the fans are not indoors, such as during traveling or camping outdoors. Generally speaking, the larger the wind force, the larger the blades of the fan, and accordingly, the less portable the fan. Therefore, when wind power is required and the fan is convenient to carry, the problem that the existing fan cannot better solve is a pair of contradictions that the fan blades are enlarged as far as possible and the carrying volume is reduced as far as possible.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect that can not solve the flabellum size betterly of prior art and carry the contradiction between the volume, thereby provide one kind can be with carrying the volume reduction make its flabellum can enlarge a portable folding fan as far as possible.

The utility model provides a technical scheme that its technical problem adopted is: constructing a portable folding fan, which comprises a base module, a connecting rod and a fan blade module, wherein the base module is used for supporting the fan and providing power supply for a motor of the fan; one end of the connecting rod is rotatably connected to the base module through a first rotating mechanism, and the other end of the connecting rod is rotatably connected to the second fan blade module through a second rotating mechanism; the base module and the fan blade module have the same vertical projection shape, so that when the connecting rod and the fan blade module respectively rotate in opposite directions relative to the base module and the connecting rod through the first rotating mechanism and the second rotating mechanism to enter a folded state, the fan blade module and the base module are completely overlapped, and the space occupied by the fan blade module in the folded state is saved;

when the folding machine is folded, the connecting rod is rotated towards the direction of the base module through the first rotating mechanism and is close to the top surface of the base module; the fan blade module rotates towards the direction of the connecting rod through the second rotating mechanism, and the back face of the fan blade module is in contact with the top face of the base module, so that the portable folding fan is converted into a folding state.

Further, the base module is provided with a positioning edge protruding upwards from the top surface of the base module; the back of the fan blade module is provided with a positioning structure matched with the positioning edge; when the portable folding fan is folded, the positioning structure enters the positioning edge to realize the overlapping of the base module and the fan blade module.

Further, the positioning rim continuously or discontinuously encloses the top surface of the base module along the shape of the top surface of the base module; the positioning structure comprises a limiting bulge protruding out of the outer surface of the side edge of the fan blade module and a rear side edge of the base module, wherein the outer diameter of the limiting bulge is matched with the inner diameter of the positioning edge.

Still further, the base module includes a base body and a base floor; the base bottom plate is arranged on the bottom surface of the base main body, and an installation space of a power supply module for supplying power to a motor on the fan blade module is reserved between the base bottom plate and the base main body; the mounting space is full or not full of the base bottom plate main body, the top surface of the mounting space is the top surface of the base module, and the outer surface of the top surface of the mounting space keeps a set distance from the top of the positioning edge.

Furthermore, a concave accommodating groove for accommodating the connecting rod is formed in the top surface of the base module, and the accommodating groove penetrates through the top surface of the base module; the relative position of two sunken sides about storage tank one end is provided with owing to hold the connection and be in the first pivot mounting groove of the first pivot of connecting rod one end, first pivot with first pivot mounting groove constitutes first revolution mechanic.

Furthermore, a second rotating shaft accommodating groove for accommodating a second rotating shaft connected to the other end of the connecting rod is formed in the edge position of the back face of the fan blade module; the second rotating mechanism is formed by the second rotating shaft and the second rotating shaft accommodating groove; when the portable folding fan is in the folding position, the first rotating shaft accommodating groove and the second rotating shaft accommodating groove are respectively positioned at two ends of a straight line penetrating through the folded appearance.

Furthermore, the first rotating shaft mounting groove and the second rotating shaft mounting groove are both provided with stopping structures matched with the corresponding positions of the connecting rods in shape, and the stopping structures are used for preventing the rotating shafts from continuously rotating; the stopping structure comprises a blocking piece arranged on the rotating route; the back of the fan blade module and the edge opposite to the second rotating shaft containing groove are also provided with positioning pieces with set elasticity, and the positioning pieces are used for being matched with blocking pieces arranged on the first rotating shaft mounting groove to enable the portable folding fan to keep a folding state.

Further, the connecting rod comprises a hollow bottom support rod and a hollow upper telescopic connecting rod; one end of the bottom supporting rod is connected with the first rotating shaft, the other end of the bottom supporting rod is connected with the upper telescopic connecting rod, and the other end of the upper telescopic connecting rod is connected with the second rotating shaft; the power supply module arranged in the mounting space supplies power to the motor on the fan blade module through a cable penetrating through the hollow part of the connecting rod; the upper telescopic connecting rod adjusts the distance between the fan blade module and the base module during work through the telescopic adjustment of the upper telescopic connecting rod.

Furthermore, the positioning module comprises a pressing block sleeved on the bottom supporting rod and a rotating block installed on the external thread of the bottom supporting rod, the rotating block moves along the external thread to enable the pressing block to be pressed on the top surface of the base module, and therefore the bottom supporting rod cannot rotate relative to the base module or the pressing block can be loosened relative to the base module to enable the bottom supporting rod to rotate relative to the base module.

Further, the power module includes an external power module converting an external ac or dc voltage into a dc voltage required by the motor or a local battery module having a chargeable function.

Implement the utility model discloses a portable folding fan has following beneficial effect: the portable folding fan comprises a base module and a fan blade module, wherein the two modules can be overlapped together through rotation between the modules and a connecting rod connected with the modules when being folded, meanwhile, because the two modules have the same appearance, when being folded, the connecting rod is placed between the base module and the fan blade module, and the fan blade module is overlapped on the base module with the same shape, thus the area of the folded fan is minimized, and larger fan blades can be selected as much as possible on the basis of the carrying volume, therefore, the structure better solves the contradiction between the carrying volume and the size of the fan blades.

Drawings

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

FIG. 2 is a schematic view showing the position of the folding fan in the folded state according to the embodiment;

FIG. 3 is a schematic structural view of a base module in the embodiment;

FIG. 4 is an assembly view of the connecting rod in the embodiment;

FIG. 5 is a schematic front view of the connecting rod in the embodiment;

fig. 6 is a sectional view of the connecting rod in the embodiment.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

As shown in fig. 1 and 2, in an embodiment of the portable folding fan of the present invention, the portable folding fan includes a base module 1 for serving as a base of the portable folding fan and supporting the fan and providing power supply for a motor of the fan, a connecting rod 2, and a fan blade module 3 for mounting the motor and fan blades; one end of the connecting rod 2 is rotatably connected to the base module 1 through a first rotating mechanism (15, 23), and the other end of the connecting rod 2 is rotatably connected to the fan blade module 3 through a second rotating mechanism (31, 24); the base module 1 and the fan blade module 3 have the same vertical projection shape (i.e. although the heights of the two may be different, the shapes and sizes of the peripheral boundaries of the two components are the same when the two are placed on a horizontal plane and viewed from top to bottom), so that when the connecting rod 2 and the fan blade module 3 are brought into the folded state by the rotation of the first rotating mechanism (15, 23) and the second rotating mechanism (31, 24) in opposite directions (e.g. one is rotated clockwise and the other is rotated counterclockwise) with respect to the base module 1 and the connecting rod 2, respectively, the fan blade module 3 and the base module 1 are completely overlapped, and the space occupied by the portable folding fan in the folded state is saved. In this embodiment, when the portable folding fan is folded, the connecting rod 2 is rotated toward the base module 1 by the first rotating mechanism (15, 23) and is close to the top surface 12 of the base module 1; the fan blade module 3 is rotated in the direction of the connecting rod 2 by the second rotating mechanism (31, 24) (at this time, the rotating direction is opposite to the rotating direction of the previous connecting rod 2), and the back surface of the fan blade module 3 is in contact with the top surface 12 of the base module 1 (at this time, the connecting rod 2 enters the accommodating groove under the action of the fan blade module 3), so that the portable folding fan is converted into a folded state. In this embodiment, the base module 1 and the fan blade module 3 are configured to have the same shape so as to be overlapped in the folded state. Thereby minimizing the volume of the fan in a folded state for portability; meanwhile, the portable folding fan can be folded by connecting the rotating structures.

Specifically, in the present embodiment, as shown in fig. 1, the connecting rod 2 is rotated 90 degrees to the left side of fig. 1 (i.e. when the connecting rod 2 enters the folding mode in fig. 1, it is rotated 90 degrees counterclockwise from the position in fig. 1); meanwhile, the fan blade module 3 is also rotated 180 degrees (i.e., the fan blade module 3 rotates 180 degrees clockwise) from the position in fig. 1 to the right side of fig. 1 relative to the connecting rod 2, so that the back surface (i.e., the air inlet surface or the surface connected to the connecting rod 2) of the fan blade module 3 is in contact with or adjacent to the top surface of the base module 1, thereby realizing folding.

Fig. 2 shows the positional relationship between the components in the folded state of the present embodiment, and it can be seen from fig. 2 that when the folded state is entered, the connecting bar 2 is already in contact with the surface or the setting surface of the base module 1 and cannot rotate in the above-mentioned direction any more, and at the same time, the back surface of the fan module 3 is also already in contact with the connecting bar 2 or the surface of the base module 1 and also cannot rotate in the above-mentioned direction any more. Therefore, in the present embodiment, the positional relationship between such members functions to stop the rotation to some extent; in addition, in the open state (for example, in the state shown in fig. 1), these components are also positioned by the position relationship between the components, for example, in fig. 1, two enlarged views a and B show the component relationship between the fan blade module 3 and the connecting rod 2, and the connecting rod 2 and the base module 1, and also because the components are already in contact with each other, they will not rotate in the original moving direction, and at this time, the moving direction is opposite to the moving direction into the folded state.

In order to better overlap the base module 1 and the fan blade module 3 and make them not easily spread out in the folded state, in other words, there should be a structure to fix the position of the above components after entering the folded state, in this embodiment, the fan blade module 3 is provided with a positioning hook 32, please refer to the enlarged view of part C in fig. 2, which visually shows how the cover positioning hook 32 is fixed to match with the structure on the base module 1 to fix the position of the above components in the folded state.

In this embodiment, the base module 1 is provided with a positioning edge 11 protruding upward from a top surface 12 of the base module 1; the back of the fan blade module 3 is provided with a positioning structure matched with the positioning edge 11; when the portable folding fan is folded, the positioning structure enters the inner side of the positioning edge 11, so that the base module 1 and the fan blade module 3 are overlapped.

In the present embodiment, the positioning rim 11 continuously or discontinuously encloses the top surface 12 of the base module 1 with the top surface 12 of the base module 1; in other words, in this embodiment, the positioning edge 11 may be continuous or discontinuous, but in any case, the positioning edge 11 finally surrounds the top surface 12, that is, surrounds the top surface 12. The positioning structure disposed on the fan blade module 3 includes a limiting protrusion protruding from an outer surface of a side of the housing of the fan blade module 3 (or other structures on the housing of the fan blade module 3, such as a decorative strip or an air intake or exhaust fence, etc.), and a rear side of the housing of the base module 3 having an outer diameter matched with an inner diameter of the positioning edge 11.

As shown in fig. 3, in the present embodiment, the base module 1 includes a base main body 18 and a base bottom plate 19; the base bottom plate 19 is installed on the bottom surface of the base main body 18, and an installation space (i.e., a space occupied by the power supply installation structure 16 in fig. 3) of a power supply module (not shown in the figure) for supplying power to the motor on the fan blade module 3 is left between the base bottom plate and the base main body 18; the installation space is full or not full of the base main body 18, the top surface of the installation space is the top surface 12 of the base module 1, and the outer surface of the top surface 12 keeps a set distance from the top of the positioning edge 11. Referring to fig. 1 or fig. 3, in fig. 3, a recessed receiving groove 14 for receiving the connecting rod is disposed on a top surface 12 of the base module 1, the receiving groove 14 is disposed along one direction of the top surface 12 of the base module 2, and has a width and a depth adapted to the connecting rod 2, so that the connecting rod 2 can be placed in the receiving groove; the base bottom plate 19 is further provided with a first rotating shaft mounting groove 17 for receiving a first rotating shaft 23 connected to one end of the connecting rod 2 at a position opposite to the left and right recessed side surfaces at one end of the receiving groove 14, and the first rotating shaft 23 and the first rotating shaft mounting groove 15 constitute the first rotating structure (in this case, the connecting rod 2 passes through the base body 18). In the case of the present embodiment shown in fig. 3. Because of the accommodating groove 14, the installation space for installing the power module is not fully distributed on the base main body 18, and because of the accommodating groove 14, in the present embodiment, the power module or the battery as the power module is disposed on one side of the base bottom plate 19, please refer to the position of the power installation structure 16 in fig. 3.

As shown in fig. 2, a connecting structure 33 for connecting the main body of the fan blade module 3 and the second rotating shaft accommodating groove 31 is disposed at an edge position of the back surface of the fan blade module 3, the second rotating shaft accommodating groove 31 is connected to the connecting structure 33 through a screw, and meanwhile, the second rotating shaft accommodating groove 31 is accommodated and rotatably connected to the second rotating shaft 24 through a bolt; the second rotating mechanism is formed by the second rotating shaft 24 and the second rotating shaft accommodating groove 31; when the portable folding fan is in the folded position, the first rotating shaft receiving groove 15 and the second rotating shaft receiving groove 31 are respectively located at two ends of a straight line passing through the folded shape.

Referring to fig. 4, 5 and 6, the connecting rod 2 is shown in a schematic view from inside to outside. Wherein, fig. 4 is an assembly view of the connecting rod 2 in the embodiment, fig. 5 is an outline structure view in one direction of the connecting rod 2, and fig. 6 is a sectional view in the direction of fig. 5. In the present embodiment, the second rotation axis receiving slot 31 and the fan module 3 are fixed into a whole by screws through the mounting structure 33, and the fan module 3 can rotate 180 ° (and the above-mentioned 180 ° rotation) relative to the connecting rod 2 by the second rotation mechanism (including the second rotation axis receiving slot 31), and when the rotation is between 0 ° and 180 °, the positioning is limited by the opposite surface of the structural member, please refer to the enlarged view of part a in fig. 1 and fig. 2. The second soft rubber damping plug 221 is clamped in the second rotating shaft 22, and then is actively fixed with the second rotating shaft 23 through the rotating shaft screw rod 222, the fixed rear fan blade module 2 and the connecting rod 2 can rotate relatively (the angle is 180 degrees), and in the rotating process, the rotating damping is increased through the second soft rubber damping plug 221', so that the part is prevented from being loosened automatically in the rotating process.

A first soft rubber damping plug 171 is arranged on the first rotating shaft mounting groove 17, and the first soft rubber damping plug 171 can increase experience feeling during rotation and prevent looseness during rotation) and is clamped in the base module 1; the first rotating shaft 23 is fixed on the first rotating shaft mounting groove 17 through screws, and after the first rotating shaft 23 is fixed, the first rotating shaft can rotate along the clamping groove for 90 degrees; when rotating to 90 degrees, the structural surface of the base main body 18 is limited to prevent the connecting rod 2 from falling backwards, and meanwhile, the support rod 21 rotates downwards to drive the pressing block 26 to move downwards to prop against the end surface or the top surface of the base main body 18, so that the connecting rod 2 is locked and prevented from falling. If when turning the ascending direction of bracing piece 21, can drive briquetting 26 and upwards remove to loosen locking structure, the whole fan head (flabellum module 3) that is driven by connecting rod 2 this moment can rotate, when rotating to the state of falling, can accomodate connecting rod 2 in whole storage tank 14, cooperate flabellum module 3 to the opposite direction (to the direction of rotation of connecting rod 2) rotatory 180 this moment, can accomplish the state of accomodating of fan (see fan state schematic diagram of accomodating, fig. 2).

In this embodiment, the connecting rod 2 comprises a hollow bottom support rod 21 and a hollow upper telescopic link 22; one end of the bottom support rod 21 is connected with a first rotating shaft 23, the other end of the bottom support rod is connected with the upper telescopic connecting rod 22, and the other end of the upper telescopic connecting rod 22 is connected with the second rotating shaft 24; the power supply module arranged in the installation space supplies power to the motor on the fan blade module 3 through a cable penetrating through the hollow part of the connecting rod 2; the upper telescopic link 22 adjusts the distance between the fan blade module 3 and the base module 1 during operation by its extension and retraction. On the above-mentioned bottom sprag 21, still be provided with orientation module (not shown in the figure), orientation module including cup joint fix on bottom sprag 21 the briquetting, the rotatory piece of urceolus of bottom sprag 21 is along setting up the outside external screw thread motion of the inner tube of bottom sprag 21 makes the briquetting is compressed tightly at base module 1 top surface, and then makes whole connecting rod 2 fixed on base module 1.

Specifically, in the present embodiment, the top of the connecting rod 2 is fixed integrally with the second rotating shaft 24, and the bottom thereof is fixed integrally with the first rotating shaft 23, wherein the telescopic link 22 is a telescopic rod that can be freely stretched and compressed; the bottom support rod 21 is movably connected with the pressing block 26 through a buckling position, the bottom support rod 21 is meshed with the first rotating shaft 23 in a threaded mode, and the pressing block 26 is driven to move up and down when the bottom support rod 21 rotates leftwards or rightwards around the first rotating shaft 23; the stopper 25 is fixed to the telescopic link 22 (specifically, the outer surface of the telescopic link 22) in a snap-fit manner to restrict the upward displacement of the whole assembled by the bottom support bar 21 and the pressing piece 26 on the link 2 to prevent the release.

In addition, the power module installed in the installation space includes an external power module converting an external ac or dc voltage into a dc voltage required by the motor or a local battery module having a chargeable function. That is, in the present embodiment. The power supply may be a dc voltage rectified from ac or may be a dc power supplied by batteries which may, of course, be charged using ac or dc power, and which may be selected by a button 5 provided on the top surface 12 of the base module 1 for powering the motor.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A portable folding fan is characterized by comprising a base module, a connecting rod and a fan blade module, wherein the base module is used for supporting the fan and providing power supply for a motor of the fan; one end of the connecting rod is rotatably connected to the base module through a first rotating mechanism, and the other end of the connecting rod is rotatably connected to the fan blade module through a second rotating mechanism; the base module and the fan blade module have the same vertical projection shape, so that when the connecting rod and the fan blade module respectively rotate in opposite directions relative to the base module and the connecting rod through the first rotating mechanism and the second rotating mechanism to enter a folded state, the fan blade module and the base module are completely overlapped, and the space occupied by the fan blade module in the folded state is saved;

2. The portable folding fan according to claim 1, characterized in that said base module is provided with a positioning rim projecting upward from the top surface of said base module; the back of the fan blade module is provided with a positioning structure matched with the positioning edge; when the portable folding fan is folded, the positioning structure enters the positioning edge to realize the overlapping of the base module and the fan blade module.

3. The portable folding fan of claim 2 wherein said locating rim continuously or discontinuously encloses the top surface of said base module along the shape of the top surface of said base module; the positioning structure comprises a limiting bulge protruding out of the outer surface of the side edge of the fan blade module and a rear side edge of the base module, wherein the outer diameter of the limiting bulge is matched with the inner diameter of the positioning edge.

4. The portable folding fan of claim 3 in which said base module includes a base body and a base floor; the base bottom plate is arranged on the bottom surface of the base main body, and an installation space of a power supply module for supplying power to a motor on the fan blade module is reserved between the base bottom plate and the base main body; the mounting space is full or not full of the base bottom plate main body, the top surface of the mounting space is the top surface of the base module, and the outer surface of the top surface of the mounting space keeps a set distance from the top of the positioning edge.

5. The portable folding fan according to claim 4, wherein a recessed receiving groove is provided on the top surface of the base module for receiving the connecting rod, the receiving groove penetrating the top surface of the base module; the relative position of two sunken sides about storage tank one end is provided with owing to hold the connection and be in the first pivot mounting groove of the first pivot of connecting rod one end, first pivot with first pivot mounting groove constitutes first revolution mechanic.

6. The portable folding fan according to claim 5, wherein a second shaft receiving groove for receiving a second shaft connected to the other end of the connecting rod is provided at a predetermined position of the back surface of the fan blade module; the second rotating mechanism is formed by the second rotating shaft and the second rotating shaft accommodating groove; when the portable folding fan is in the folding position, the first rotating shaft accommodating groove and the second rotating shaft accommodating groove are respectively positioned at two ends of a straight line penetrating through the folded appearance.

7. The portable folding fan according to claim 6, wherein the first and second hinge mounting grooves are each provided with a stop structure adapted to the corresponding position of the connecting rod, and the stop structure is used for preventing the hinge from further rotating; the stopping structure comprises a blocking piece arranged on the rotating route; the back of the fan blade module and the edge opposite to the second rotating shaft containing groove are also provided with positioning pieces with set elasticity, and the positioning pieces are used for being matched with blocking pieces arranged on the first rotating shaft mounting groove to enable the portable folding fan to keep a folding state.

8. The portable folding fan according to claim 7 in which said connecting rods comprise a hollow bottom support rod and a hollow upper telescoping link; one end of the bottom supporting rod is connected with the first rotating shaft, the other end of the bottom supporting rod is connected with the upper telescopic connecting rod, and the other end of the upper telescopic connecting rod is connected with the second rotating shaft; the power supply module arranged in the mounting space supplies power to the motor on the fan blade module through a cable penetrating through the hollow part of the connecting rod; the upper telescopic connecting rod adjusts the distance between the fan blade module and the base module during work through the telescopic adjustment of the upper telescopic connecting rod.

9. The portable folding fan of claim 8 further comprising a positioning module, said positioning module including a press block sleeved on said bottom support rod, said bottom support rod rotating such that said press block is pressed against said base module top surface, thereby enabling said bottom support rod to rotate relative to said base module.

10. The portable folding fan according to claim 9, wherein the power module includes an external power module that converts an external ac or dc voltage into a dc voltage required by the motor or a local battery module having a chargeable function.