TW201504531A - Synchronized expanding collapsing device of an expanding fan - Google Patents

Abstract

This invention provides a synchronized expanding and collapsing device of an expanding fan. The expanding fan is equipped with a driving device, a rotating base, and multiple fan blades. The synchronized expanding and collapsing device comprises multiple lower support frames, multiple rotatable axles, and a transmission component. The lower support frames are alternatively configured around the perimeter of the rotating base. Each of the lower support frames includes a pivot region. Each of the rotatable axles includes an upper tip, a lower tip pivotally connected to each pivot region, and a gear part. These upper tips are connected to those fan blades, respectively. The transmission component surrounds and meshes with the gear parts of those rotatable axles. When the rotating base is switched between a rotation state and a stationary state, the transmission component and those rotatable axles are operated together to drive the fan blades by taking those rotatable axles as an axis to rotate and switch between an expanding position and a collapsing position.

Description

Expanding fan synchronous unfolding and folding device

The present invention relates to a deployment fan, and more particularly to a synchronous deployment and collapsing device for an expansion fan.

A synchronizing and unfolding structure of a spreading fin fan disclosed in the Patent No. M387920 of the Republic of China, which mainly comprises a driving device, a plurality of casings, a plurality of connecting rods and a plurality of blades, wherein the driving device is provided outwardly a radially arranged support frame, and a pivot post is disposed at a near end of the support frame; a pivot hole corresponding to the pivot post is disposed at a center of the case, and the case is provided with three perforations around the pivot hole; the link The two joint sections are integrally formed at two ends of a connecting section, and the connecting rod section is provided with a corresponding perforating through hole, and the connecting rod is respectively provided with a through hole of the two ends and a perforation of two adjacent shells by two screws. One end of the fan blade is provided with a corresponding portion of the corresponding housing, and the combination portion is provided with a screwing hole corresponding to the pivoting hole, and the combined portion is provided with a screwing hole corresponding to the through hole for the screw to pass through the connecting rod The through hole and the housing are perforated and locked to the screw hole; accordingly, the housing is pivoted relative to the support frame by the connecting rod, and the fan blade and the housing are synchronously unfolded or folded.

The above-mentioned spread-wing fan synchronous unfolding and folding structure has the disadvantage that the connecting blades are synchronously linked or unfolded by the connecting rods, and the connecting structure has a plurality of components (links) and a plurality of pivoting points, once among them If the structural deformation of a component or the pivoting function of one of the pivot points fails, the function of the synchronous linkage will be invalidated. In addition, the design change of the number of different blades and the different relative positions of the blades must be Redesigning the structural shape of each connecting rod can achieve the effect of synchronously interlocking the fan blades for unfolding and folding.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a synchronous unfolding and folding device for a deployment fan which is simple in construction, smooth in transmission, and arbitrarily combinable, and is applicable to various fan blade numbers and combinations.

Therefore, the present invention expands the synchronous unfolding and folding device of the fan, the unfolding fan has a driving device, a rotating base that can be driven to rotate by the driving device and is provided for the synchronous unfolding and folding device, and most of which have a connection for the synchronous deployment The fan blade of the connecting portion of the folding device comprises a plurality of lower support frames, a plurality of shaft members, and a belt member.

The lower support brackets are spaced around the axis of the spin base and are detachably disposed on a circumferential side of the spin base. The lower support frames each include a pivoting zone. The pivoting zones each have a pivoting aperture.

The shaft members are respectively pivotally disposed in the pivoting regions of the lower support frames, and respectively include an upper end portion, a lower end portion pivotally disposed at a pivot hole of the corresponding pivoting portion, and a gear portion. The upper ends are connected to the connecting portions of the fan blades, respectively.

The belt member surrounds the shaft members and meshes with the gear portions of the shaft members.

Wherein, when the rotating base changes between rotating and stationary states When the belt member cooperates with the shaft members, the fan blades are driven to rotate, and the fan blades are respectively rotated between the unfolding position and the folding position with the shaft members as the axis.

The utility model has the advantages that the driving belt member cooperates with the rotating shaft members to synchronously drive the rotation of the fan blades between a deployed position and a folding position, not only the transmission member is simple, but also the annular transmission mode is more traditional than the connecting rod transmission. Smooth, and suitable for a variety of fan blade number and combination type of expansion fan. In addition, the lower support frames are detachably disposed on the rotating base, and the number of the lower support frames and the distance between them can be arbitrarily adjusted, so that the assembly structure between the components of the present invention is not Need to be redesigned, it can be applied to the expansion fan of various fan blade numbers and combination types.

1‧‧‧ drive

2‧‧‧Synchronous expansion and collapse device

21‧‧‧ lower support frame

211‧‧‧ erection area

212‧‧‧ pivot hole

213‧‧‧Arc-shaped guide holes

214‧‧‧Expanded end

215‧‧‧ Closed end

22‧‧‧Upper support

23‧‧‧Shaft parts

231‧‧‧Upper end

232‧‧‧Bottom

233‧‧‧ Gear Department

234‧‧‧Limited arm

24‧‧‧fan blade holder

25‧‧‧Response

26‧‧‧Transmission belt parts

3‧‧‧Rotating base

4‧‧‧fan blades

41‧‧‧Connecting Department

L‧‧‧ axis

Other features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the accompanying drawings, wherein: Figure 1 is a perspective exploded view showing a comparison of the synchronous unfolding device of the deployment fan of the present invention. FIG. 2 is a perspective view showing a plurality of fan blades of the preferred embodiment in a deployed position; FIG. 3 is a plan view showing a plurality of fan blades of the preferred embodiment in the deployed position; FIG. A perspective view of a plurality of blades of the preferred embodiment in a folded position; FIG. 5 is a top plan view showing a plurality of blade holders of the preferred embodiment in the folded position; Figure 6 is a top plan view showing a combination of three blade holders in the preferred embodiment and in the folded position; and Figure 7 is a top plan view showing the preferred embodiment having five fans The combination of the leaves is in the folded position.

Referring to FIG. 1 , FIG. 2 and FIG. 4 , a preferred embodiment of the synchronous unfolding and folding device of the fan of the present invention has a driving device 1 , which can be driven to rotate by the driving device 1 for synchronous expansion. The rotating base 3 provided in the folding device 2 and the plurality of fan blades 4 each having a connecting portion 41 connected to the synchronous unwinding and folding device 2 respectively include a plurality of lower support frames 21 and a plurality of upper supports The frame 22, the plurality of shaft members 23, the plurality of blade holders 24, the plurality of return members 25, and a belt member 26.

The lower support frames 21 are spaced around the axis L of the spin base 3 and are detachably disposed on the circumferential side of the spin base 3. The lower support frames 21 each include a pivoting region 211. The pivoting regions 211 respectively have a pivot hole 212 and an arcuate guide hole 213. Each of the arcuate guide holes 213 has an unfolded end portion 214 and a converging end portion 215 which are oppositely disposed.

The upper support frames 22 are spaced around the axis L of the spin base 3 and are respectively located above the lower support frames 21 and are detachably disposed on the circumferential side of the spin base 3 .

The shaft members 23 are rotatably disposed between each of the two adjacent lower support frames 21 and the upper support frame 22. The shaft members 23 respectively include an upper end portion 231 pivotally disposed on the corresponding upper support frame 22, a lower end portion 232 pivotally disposed on the pivot hole 212 of the corresponding pivoting portion 211, and a gear portion. 233, and a limiting arm portion 234 protruding outwardly and having an outer end slidingly disposed on the arcuate guiding hole 213 of the corresponding pivoting portion 211.

One end of the fan blade holder 24 is connected to the upper end portion 231 of the shaft member 23, and the other end portion of the fan blade holder 24 is connected to the connecting portion 41 of the fan blades 4, respectively. Each of the vane holders 24 can be used to adjust the angle between the connected fan blades 4 and the rotating surface when the fan blades 4 are rotated.

The return members 25 are each a return spring. One end of the restoring member 25 is respectively connected to the outer end of the limiting arm portion 24 of the shaft member 23, and the other end of the restoring member 25 is connected to the lower supporting bracket 21 adjacent to the curved guiding hole 213 thereof. The closing end 215. Thereby, the restoring members 25 respectively provide the restoring forces of the shaft members 23 to slide the outer ends of the limiting arm portions 234 to the closing end portions 215 of the corresponding curved guiding holes 213.

The belt member 26 surrounds the shaft members 23 and meshes with the gear portions 233 of the shaft members 23. The belt member 26 is a time gauge belt.

In this embodiment, the lower support frame 21, the upper support frame 22, and the fan blade holders 24 are all made of aluminum to achieve weight reduction and high structural strength, but the above components of the present invention are The material is not limited to the above, and can also be processed from other materials. In addition, in the embodiment, the fan blades 4, the lower support frames 21, the upper support frames 22, and the fan blade holders 24 correspond to the number of the recovery members 25, respectively, and are four. However, the number of the above-mentioned members of the present invention is not limited to the above, and may be changed according to design requirements.

When the rotating base 3 is driven by the driving device 1 to change between a rotating state and a stationary state, the driving belt member 26 cooperates with the rotating shaft members 23 to simultaneously drive the fan blades 4, so that the fan blades 4 are The rotation of the shaft member 23 is in an expanded position (see FIGS. 2 and 3) and a folding position (see FIGS. 4 and 5).

When the unfolding fan is in a stationary state, the fan blades 4 are folded in the folding position (see FIGS. 4 and 5) and do not overlap each other, and the outer ends of the limiting arm portions 234 of the rotating shaft members 23 are located. Corresponding end portion 215 of the curved guide hole 213, when the user activates the driving device 1 to drive the rotating base 3 to rotate, by rotating the centrifugal force, each of the fan blades 4 is pivoted with each of the rotating shaft members 23 and opposite The lower and upper support frames 21, 22 are rotated, and the adjacent fan blades 4 are simultaneously driven to the deployed position (see FIGS. 2 and 3) through the belt member 26 and the shaft members 23, so that the fan blades are 4 are apart from each other and do not overlap each other. At this time, the outer ends of the limiting arm portions 234 of the rotating shaft members 23 are located at the unfolded end portions 214 of the corresponding curved guiding holes 213.

When the user closes the driving device 1 , each of the blades 4 rotates with each of the rotating shaft members 23 as an axis and rotates relative to the lower and upper supporting frames 21 and 22 , and transmits the driving belt member 26 and the rotating shaft members 23 . Synchronously driving the adjacent fan blades 4 to be folded to the folding position (see FIGS. 4 and 5).

It is worth mentioning that the lower and upper support frames 21, 22 are detachably disposed on the rotating base 3, and the number of the lower and upper support frames 21, 22 can be arbitrarily adjusted and between each other. Therefore, the assembly structure between the components does not need to be redesigned, and can be applied to the fan blades of various fan blades and combinations.

It is further worth mentioning that, since the belt member 26 has flexibility, according to this, in addition to the gear portion 233 which can be engaged with the above-mentioned number four of the shaft members 23, the simultaneous deployment of the fan blades can be achieved. The function of 4 can also be engaged with different number and spatial distribution of the shaft members 23 (as shown in FIG. 6 and FIG. 7), and the shaft members 23 can be simultaneously driven to rotate to achieve the rotation of the fan blades 4 connected thereto. The effect of simultaneous expansion and collapse.

In summary, the fan blades 4 of the synchronous unfolding and folding device of the fan of the present invention can be synchronously rotated between a folding position and a deployed position by the rotation of the shaft member 23 and the belt member 26, respectively. Not only the transmission member is simple, but the ring transmission mode is smoother than the traditional connecting rod transmission, and is suitable for the expansion fan of various fan blade numbers and combined types. In addition, the lower and upper support frames 21 and 22 are detachably disposed on the rotating base 3, and the number of the lower and upper support frames 21 and 22 and the distance between them can be arbitrarily adjusted, and thus the present invention The assembly structure between the components does not need to be redesigned, and can be applied to the fan blades of various fan blades and combinations. Furthermore, the fan blades 4 do not overlap each other during the rotation between the folding position and the deployed position, so that the fan blades 4 do not have the problem of noise and wear due to collision friction. In addition, the shaft members 3 are vertically erected on the lower and upper support members 21 and 22, respectively, so that the shaft members 23 do not have left and right yaw rotation problems, thereby improving the stability of the synchronous rotation and the device. The service life is indeed achieved by the purpose of the present invention.

However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent change of the patent application scope and the patent specification content of the present invention is Modifications are still within the scope of the invention.

2‧‧‧Synchronous expansion and collapse device

21‧‧‧ lower support frame

213‧‧‧Arc-shaped guide holes

214‧‧‧Expanded end

215‧‧‧ Closed end

22‧‧‧Upper support

23‧‧‧Shaft parts

231‧‧‧Upper end

233‧‧‧ Gear Department

234‧‧‧Limited arm

24‧‧‧fan blade holder

25‧‧‧Response

26‧‧‧Transmission belt parts

3‧‧‧Rotating base

4‧‧‧fan blades

41‧‧‧Connecting Department

L‧‧‧ axis

Claims (7)

A synchronous unfolding and folding device for deploying a fan, the unfolding fan having a driving device, a rotating base that can be driven to rotate by the driving device and provided for the synchronous unfolding and folding device, and a plurality of respectively having a connection for the synchronous expansion and folding a fan blade of the connecting portion of the device, the synchronous unfolding device includes: a plurality of lower support frames spaced around an axis of the rotating base and detachably disposed on a circumference side of the rotating base, the lower support frames respectively including a pivoting zone, each of the pivoting zones has a pivoting hole; a plurality of pivoting members are respectively pivotally disposed in the pivoting zones of the lower supporting frames, and respectively comprise an upper end portion and a pivoting device corresponding to the pivoting a lower end portion of the pivot hole of the region, and a gear portion respectively connected to the connecting portions of the fan blades; and a belt member surrounding the shaft members and meshing with the gear portions of the shaft members Wherein, when the rotating base changes between a rotating state and a stationary state, the driving belt member cooperates with the rotating shaft members to simultaneously drive the fan blades, so that the fan blades are respectively centered on the rotating shaft members. A change in rotational position between the deployed position and a collapsed. The synchronous fan-folding device of the unfolding fan according to claim 1, wherein the pivoting region of the lower support frame further has an arc-shaped guiding hole, and each of the arc-shaped guiding holes has an unfolded end portion and an opposite end portion The end portion of each of the rotating shaft members further includes a limiting arm portion which protrudes outwardly and has an outer end slidingly disposed on the arcuate guiding hole of the corresponding pivoting portion, when the fan blades are synchronously rotated to In the folded position, the outer ends of the limiting arm portions of the rotating shaft members are respectively located at the folding ends of the arcuate guiding holes, and when the fan blades are synchronously rotated to the deployed position, the rotating shaft members are The outer ends of the limiting arm portions are respectively located at the unfolded ends of the arcuate guiding holes. The synchronous unfolding and folding device of the unfolding fan according to claim 2, further comprising a plurality of returning members, wherein one end portion of the returning member is respectively connected to an outer end of the limiting arm portion of the rotating shaft member, and the rest of the returning member The other end is respectively connected to the folding end of the lower support frame adjacent to the arcuate guide hole, whereby the returning members respectively provide the rotating shaft members to slide the outer end of the limiting arm portion to the phase The restoring force of the folded end of the corresponding curved guide hole. The synchronous unfolding and folding device of the unfolding fan according to claim 3, wherein the returning members are respectively a return spring. The synchronous unfolding and folding device of the unfolding fan according to claim 4, further comprising a plurality of upper support frames spaced around the axis of the rotating base and respectively located above the lower support frames and detachably The upper end portions of the rotating shafts are respectively pivotally disposed on the upper support frames. A synchronous unfolding and folding device for an unfolding fan according to any one of claims 1 to 5, wherein the belt member is a timing belt. The synchronous fan-folding and folding device of the unfolding fan according to claim 6, further comprising a plurality of fan blade frames, wherein the fan blades are connected to the upper end portions of the shaft members by the fan blade frames.