TWM536289U - Folding and unfolding structure of ceiling fan blade - Google Patents

Description

Retracting and stretching structure of ceiling fan blade

The present invention relates to a ceiling fan, in particular to a folding and extending structure of a ceiling fan blade which is in a collapsed state when not in use and automatically extends outward when the rotation is started.

According to the current, the common ceiling fan structure on the market is divided into two types: fixed type and take-off type. The fixed type means that the ceiling fan blade is connected to the rotating disk of the externally-rotating motor, and is fixedly extended and stretched regardless of rotation or stop. The take-off type means that the ceiling fan blade is pivotally disposed on the rotating disk, and the rotating disk is also located on the externally-rotating motor, and is folded inward when stopped, and is extended outward when rotated. The take-off type is divided into two types depending on the way the blade is stretched. The first type of blade is operated in the horizontal direction of the rotating disk (outwardly extending and inwardly folded), and is matched with the planetary pinion through a main toothed disc, so that the blade is stopped by the elastic member. Restricting the inward folding, when it is rotated, it is extended outward due to the centrifugal force, such as Taiwan Patent No. M345145, Taiwan Patent No. M387920, Taiwan Patent No. M482700, and the like. The second type of blade is in a drooping state when folded, such as Taiwan Patent No. M244370, Chinese Patent No. ZL200620115610.7, etc., and the blades are connected with the rotating arm by a support arm that can be pivoted up and down. When the blade is not rotated, the blade is suspended from the circumference of the rotating disk. It has a convenient cleaning effect, and compared with the fixed ceiling fan blade, there is no disadvantage of damage to each blade due to wiping. However, when the driving is rotated, the upper and lower pivoting operations of the supporting arm must overcome the length of the arm and the weight of the blade, so that the rotating disk (motor) that drives the rotation thereof has a high load, and is likely to cause rotational sway, The instability of the yaw and the unsmooth situation, affecting the service life of the ceiling fan, is a drawback that needs to be improved.

Based on the lack of the above-mentioned conventional ceiling fan, the creator actively strives to develop, research and improve, and introduces the "retracting and stretching structure of the ceiling fan blade", which completely solves the drawbacks of the conventional use, provides smooth movement of the folding and stretching, and has a novel appearance of the ceiling fan. With a special aesthetic, it can enhance the competitiveness of the industry.

The main purpose of this creation is to provide a folding and extending structure of the ceiling fan blade, and the folding and stretching action of the blade is smooth, and the service life of the ceiling fan can be prolonged, and the overall appearance of the ceiling fan has novel and special beauty, which can enhance the industrial competitiveness.

The technical means adopted by the present invention for achieving the above object is as follows: a folding and extending structure of a ceiling fan blade is provided, comprising: a driving device; a rotating member coupled to the driving device and rotating synchronously; and a plurality of connecting arms, one end of each connecting arm Connected to the rotating member, the other end is provided with a first pivoting portion; a plurality of fixing arms, one end of each fixing arm is fixed to the blade, and the other end is provided with a second pivoting portion; a plurality of extending arms, two ends of each extending arm a first pivot end and a second pivot end are disposed, each first pivot end is pivotally coupled to each of the first pivoting portions through the first pivotal member, and each of the second pivot ends is transmitted through the second pivotal member And a plurality of elastic members disposed between each of the first pivot ends and each of the first pivoting portions for limiting the outward extension of each of the extending arms, and providing each The second pivot end of the extension arm pivots upwardly about the first pivotal member and is close to the urging force of the rotating member, and each of the blades pivots downwardly around the second pivotal member to be engaged with the rotating member. The side of the week.

A further technical feature of the present invention is that a resisting rod protrudes outwardly from an intermediate portion of the connecting arm, and when the extending arm pivots close to the rotating member, the resisting rod abuts the extending arm to restrict the pivoting state thereof. .

A further technical feature of the present invention is that the elastic member is a torsion spring, has a connecting portion with a meandering shape, and two spiral coils disposed at two ends of the connecting portion, and each of the coiled coils is respectively provided with an insertion end, and the insertion is in the first A pivotal portion has two sides, and the first pivotal member passes through the two coiled coils, and the connecting portion abuts against the side of the extending arm.

A further technical feature of the present invention is that the first pivoting portion of the connecting arm has two side panels arranged at intervals, and the two side panels of the connecting arm are respectively provided with perforations, and the second pivoting portion of the fixing arm also has The two side panels are disposed at intervals, and the two side panels of the fixing arm are respectively provided with perforations, and the first and second pivot ends of the extension arm have two side panels arranged at intervals, and each side panel is also separately provided. a perforation through the first pivot member through the first pivot portion corresponding to the first pivot end, and the second pivot member passing through the second pivot portion corresponding to the second pivot end The connecting arm, the extension arm and the fixing arm can be pivoted.

A further technical feature of the present invention is that each of the side portions of the first pivoting portion is further provided with a plurality of annular holes, each of which is disposed on a circumferential side of each of the perforations, and provides insertion of the insertion end on both sides of the torsion spring. Set up.

A further technical feature of the present invention is that the first pivot member includes a shaft and a C-shaped buckle, wherein the end of the shaft is provided with a ring groove for providing a C-shaped buckle, and the connecting arm and the extending arm are transmitted through the first shaft The pivot members are pivotally coupled.

A further technical feature of the present invention is that the second second pivot member comprises a shaft and a nut, wherein the shaft end is provided with an external thread for providing a nut screwing, and the extending arm and the fixing arm are transmitted through the second pivot The pieces are pivotally joined.

Combining the above technical features described in the present invention, the advantage is that the structure of the rotating member and the blade is connected through the connecting arm, the fixing arm and the extending arm, so that the stretching action of the blade is extended one by one. The form of the output is smooth and beautiful, and solves the above-mentioned existing blade swaying, yaw instability, and unsatisfactory drawbacks, and the blade of the present invention is wrapped around the outer peripheral side of the rotating member when the ceiling fan is folded, and the overall appearance is as if The flowers that are to be released are novel and special, which can promote industrial upgrading. Therefore, this creation can be said to be a kind of practical and progressive creation, which is worthy of promotion by the industry and publicized to the public.

1‧‧‧ drive

11‧‧‧heart

2‧‧‧Rotating parts

3‧‧‧ connecting arm

31‧‧‧First pivotal

311‧‧‧ side film

312‧‧‧Perforation

313‧‧‧ hole

32‧‧‧Resistance pole

4‧‧‧Fixed Arm

411‧‧‧ side film

412‧‧‧Perforation

5‧‧‧Extension arm

51‧‧‧First pivot end

52‧‧‧Second pivot end

511, 521‧‧‧ side pieces

512, 522‧‧‧ perforation

6‧‧‧Flexible parts

61‧‧‧Connecting Department

62‧‧‧Helical coil

63‧‧‧Insert

7‧‧‧ leaves

8‧‧‧First axis pivot

81‧‧‧ shaft

82‧‧‧C-shaped buckle

9‧‧‧Second axis pivot

91‧‧‧ shaft

92‧‧‧ nuts

93‧‧‧External thread 93

The first figure is a three-dimensional appearance of the creation blade in a folded state.

Fig. 2 is a schematic view showing the stereoscopic appearance of the blade of the present invention in an extended state.

Figure 3 is a schematic diagram of a blade disassembly and detachment rotation in the present creation.

Fig. 4 is a perspective exploded view of the blade of Fig. 3.

Fig. 5 is an enlarged schematic view of the first portion in the A portion.

Fig. 6 is a partially enlarged schematic view showing the connecting arm and the extending arm of the present blade when it is folded.

Fig. 7 is a partially enlarged schematic view showing the connecting arm and the extending arm of the present blade when it is extended.

In order to clarify that the above objects and effects can be achieved by the present invention, the features and effects of the present embodiment will be described in detail with reference to the drawings. The present invention relates to a folding and extending structure of a ceiling fan blade, which, as shown in FIGS. 1 to 7 , includes: a driving device 1 , a rotating member 2 , a plurality of connecting arms 3 , a plurality of fixing arms 4 , and a plurality of extending arms 5, a plurality of elastic members 6, a plurality of blades 7; wherein: the rotating member 2 is coupled to the driving device 1 and rotates synchronously therewith; one end of each connecting arm 3 is respectively connected to the rotating member 2, and each of the connecting arms 3 One end is provided with a first pivoting portion 31; one end of each of the fixing arms 4 is fixed to a blade 7 respectively, and the other end of each of the fixing arms 4 is respectively provided with a second pivoting portion 41; The two ends of the extension arm 5 are respectively disposed as a first pivot end 51 and a second pivot end 52, and each of the first pivot ends 51 is pivotally assembled by the first pivotal member 8 The pivoting portion 31, each of the second pivot ends 52 is pivotally assembled to each of the second pivoting portions 41 by a second pivoting member 9; each of the elastic members 6 is disposed at each of the first pivot ends 51. Between each of the first pivoting portions 31, a state in which each of the extending arms 5 is extended outward is provided, and a second pivot end 52 of each of the extending arms 5 is provided with each of the first pivoting members 8 in The heart pivots upward and is close to the urging force of the rotating member 2, and each of the blades 7 pivots downwardly around the second pivot member 9 to be folded on the circumferential side of the rotating member 2. (The aforementioned is a creation The main technical features of the main embodiment are corresponding to the content of the first item of the patent application scope of the present application, and the purpose and implementation form of the present invention are known in detail, and the technical features described in the remaining sub-claims are for the scope of patent application. The details of the first item or additional technical features, rather than limiting the scope of the first paragraph of the scope of patent application, should be understood that the first item of the scope of patent application in this case does not necessarily contain the technical features described in the scope of the remaining subsidiary patents. ).

It is to be noted that the one end of each of the connecting arms 3 is respectively connected to the rotating member 2, and one end of each of the fixing arms 4 is respectively fixed to the structure of a blade 7, and may be generally assembled by bolts. The driving device 1 is an internal rotation type motor, and the rotating member 2 is coupled with the motor spindle, so that the rotating member 2 can move circumferentially with the motor spindle. The present invention is not limited thereto, and the driving device 1 can also be An externally-rotating motor is used, and the rotating member 2 of the present invention is a motor housing, and the connecting arm 3 can be assembled under the motor housing, wherein the structure of the external-rotating motor or the internal-rotating motor is conventionally known, and The main feature technology of this creation is not described here; however, the folding and extension structure of the ceiling fan blade of the present invention is as shown in Figures 3, 4 and 5, where The connecting arm 3 protrudes outwardly from the connecting portion 32. When the extending arm 5 pivots close to the rotating member 2, the resisting rod 32 abuts the extending arm 5 to restrict its pivoting state.

Moreover, the elastic member 6 is a torsion spring having a U-shaped connecting portion 61 and two spiral coils 62 disposed at two ends of the connecting portion 61. Each of the coiled coils 62 has an insertion end 63. Inserted on the two sides of the first pivoting portion 31, the first pivoting member 8 is pivoted through the two coiled coils 62, and the connecting portion 61 abuts against one side of the extending arm 5 (see Figure 5). Shown).

Furthermore, the folding and extending structure of the ceiling fan blade of the present invention is as shown in FIG. 4, wherein the first pivoting portion 31 of the connecting arm 3 has two side panels 311 arranged at intervals, and the two side panels 311 respectively The second pivoting portion 41 of the fixing arm 4 also has two side panels 411 arranged at intervals. The two side panels 411 are also respectively provided with a through hole 412, and the first pivot of the extending arm 5 End 51 The second pivotal ends 52 and the second pivotal ends 52 are provided with two side plates 511, 521, and each of the side panels 511, 521 is also provided with a through hole 512, 522, respectively, the first pivotal member 8 passes through the first The pivoting portion 31, the first pivot end 51 corresponding to the through hole 312, 512, the second pivot member 9 through the second pivot portion 41, the second pivot end 52 corresponding to the perforations 412, 522 complete Pivot.

In addition, each of the side panels 311 of the first pivoting portion 31 is further provided with a small hole 313, and the small hole 313 is disposed on the circumferential side of the through hole 312, and the elastic member 6 has two coil coils 62 each having The insertion ends 63 are inserted into the small holes 313, respectively.

The first pivot member 8 includes a shaft 81 and a C-shaped buckle 82. The shaft 81 passes through the first pivoting portion 31 and the corresponding pivots 312 and 512 of the first pivot end 51. The C-shaped buckle 82 is embedded in a ring groove 83 at the end of the shaft 81.

The second pivot member 9 includes a shaft 91 and a nut 92. The shaft 91 passes through the corresponding second and second pivot ends 52 and 522, 522. 92 is screwed to the external thread 93 at the end of the shaft 91.

According to the content described above for the present invention, please refer to FIGS. 1 and 3, when the driving device 1 is not activated, the rotating member 2 is not rotated around the core rod 11, because each of the elastic members The elastic force of 6 is such that the first pivot end 51 of each of the extension arms 5 is centered on the first pivot member 8 and the second pivot end 52 is pivoted upwardly and close to the type of the rotary member 2, And the second pivoting portion 41 of the fixing arm 4 pivots downwardly about the second pivoting member 9 due to the gravity of the blade 7 itself, and each of the blades 7 will be downwardly swayed, and Closely folded inwardly on the circumferential side of the rotating member 2, providing a convenient cleaning and wiping action on the blade 7, and there is no disadvantage that the conventional ceiling fan is liable to cause blade damage during wiping, and the extension arm 5 is pivoted When the rotating member 2 is adjacent to the rotating member 2, the resisting rod 32 protruding outwardly from the intermediate portion of the connecting arm 3 provides a state of resisting the extending arm 5 to restrict the pivoting of the extending arm 5, such as the fifth As shown in FIG. 6 , it can be avoided that the blade 7 is too close to and touches the driving device 1 and the rotating member 2; however, when the driving device is activated 1 when the rotating member 2 is rotated, Then, due to the centrifugal force, the blade 7 is straightened and pivoted upward by the fixing arm 4 around the second pivoting member 9, and the extending arm 5 overcomes the elastic force of the elastic member 6 to make it The second pivot end 52 pivots downwardly, and the second pivot end 52 will extend outward in a direction away from the rotating member 2, and each of the blades 7 will extend outwardly around the driving device 1, and each of the blades 7 when the rotation produces a blowing effect; the folding and extending structure of the ceiling fan blade of the present invention, the blade 7 will be connected to the rotating member 2 through the fixing arm 4, the extending arm 5 and the connecting arm 3, when the rotating member 2 starts to rotate The stretching action of the blade 7 is a form of protruding one layer at a time, so the movement is smooth and beautiful, completely solving the aforementioned rotatory, yaw, and unsatisfactory defects of the blade, and can indeed achieve the intended purpose of creation. The folding and extending structure of the ceiling fan blade can extend the service life of the ceiling fan, and has practicality and advancement, and the overall appearance of the ceiling fan is novel and special whether it is folded or extended (as shown in Figures 1 and 2). Aesthetic sense can enhance industrial competitiveness. The above description is only a preferred embodiment for explaining the present creation, and is not intended to impose any form limitation on the creation, so that any modification related to the creation in the same creative spirit is made. Or the changer, other types that can be implemented and have the same effect, should still be included in the scope of protection of this creation.

In summary, the creation of the "retracting and stretching structure of the ceiling fan blade" is in line with the needs of industrial development, and the disclosed structure is unprecedented and novel. This creation is more effective than its application, and it is progressive and undoubted. It fully complies with the application requirements of China's patent law, and it is a patent application in accordance with the law. Please review it and give it affirmation.

1‧‧‧ drive

2‧‧‧Rotating parts

3‧‧‧ connecting arm

4‧‧‧Fixed Arm

5‧‧‧Extension arm

7‧‧‧ leaves

Claims (7)

A folding and extending structure of a ceiling fan blade comprises: a driving device; a rotating member coupled to the rotating device and rotating synchronously; and a plurality of connecting arms, one end of each connecting arm is connected to the rotating member, and the other end is provided with a first pivot a plurality of fixing arms, one end of each fixing arm is fixed to the blade, and the other end is provided with a second pivoting portion; a plurality of extending arms, the two ends of each extending arm are provided with a first shaft end and a second shaft end Each of the first shaft ends is pivotally coupled to each of the first pivoting portions through the first pivot member, and each of the second shaft ends is pivotally coupled to each of the second pivot portions through the second pivot member; and a plurality of elastic members are disposed between each of the first shaft transmitting ends and the first pivoting portions for restricting the outward extending state of the extending arms, and providing the second shaft transmitting ends of the extending arms to the first axes The pivoting member pivots upward and is close to the urging force of the rotating member, and each of the blades pivots downwardly around the second pivoting member to be folded on the circumferential side of the rotating member. The folding and extending structure of the ceiling fan blade according to claim 1, wherein a resisting rod protrudes outwardly from an intermediate portion of the connecting arm, and is resisted when the extending arm pivots close to the rotating member. The rod abuts the extension arm to limit its pivoting state. The folding and extending structure of the ceiling fan blade according to claim 2, wherein the elastic member is a torsion spring, has a U-shaped connecting portion, and two spiral coils disposed at two ends of the connecting portion, Each of the coiled coils is respectively provided with an insertion end, and the insertion end is inserted on two sides of the first pivoting portion, and the first pivotal member is pivoted through the two coiled coils, and the connecting portion abuts against the side of the extending arm. The folding and extending structure of the ceiling fan blade according to the first aspect of the invention, wherein the first pivoting portion of the connecting arm has two side plates arranged at intervals, and the two side pieces of the connecting arm are respectively provided on the two sides The second pivoting portion of the fixing arm also has two side pieces arranged at intervals. The two side pieces of the fixing arm are also respectively provided with perforations, and the first shaft end and the second shaft of the extending arm are respectively The ends have two side plates arranged at intervals, and each side piece is also provided with a perforation respectively, through the first pivot member passing through the first pivoting portion corresponding to the first shaft receiving end, and the second pivot The through hole corresponding to the second shaft receiving portion and the second shaft receiving end can pivot the connecting arm, the extending arm and the fixing arm. The folding and extending structure of the ceiling fan blade according to claim 4, wherein each side piece of the first pivoting portion is provided with a small hole, and each small hole is disposed on a circumferential side of each of the perforations to provide a torsion spring Insert the side of the insertion into the group. The folding and extending structure of the ceiling fan blade according to claim 1, wherein the first pivot member comprises a shaft and a C-shaped buckle, and the end of the shaft is provided with a ring groove for providing a C-shaped buckle. . The folding extension structure of the ceiling fan blade according to claim 1, wherein the second pivot member comprises a shaft and a nut, and the shaft end is provided with an external thread that provides a nut screwing.