Fixture Device of Blade and Blade Frame of a Ceiling Fan
A fixture of blade and blade frame in a ceiling fan is disclosed. The blade frame has an inserting part to go through the through hole on the blade. The stopping part of the inserting part is blocked by the limiting parts of the positioning element, thereby restricting and positioning the blade and the blade frame. At least one of the several limiting parts is movable and can retract and extend relative to the positioning element, thereby blocking and leaving the corresponding stopping part. Along with fixed limiting parts, the blade and the blade frame can be controlled to be positioned or departed.
1. Field of Invention
The invention relates to a ceiling fan structure and, in particular, to a fixture device of its blade and blade frame.
2. Related Art
A ceiling fan has several blade frames outside the central motor. Each blade frame is mounted with a blade. The invention relates to the technique of combining the blade and the blade frame.
In the early days, the blades of a ceiling fan are fixed on blade frames using simply screws. For example, the blade frame is protruded with a screw rod to go through the blade. A bolt is then used to lock the blade and the blade frame. However, this structure is somewhat inconvenient because all the parts have to be taken apart before the assembly. Therefore, structures more convenient in assembly have been introduced.
As shown in
Please refer to
Finally, please refer to
Although the above-mentioned three structures of blade and blade frame are more convenient than the conventional structure using screws, the hook, clip or inserting part is positioned on the blade after going through the corresponding through hole. Taking
Therefore, it is the goal of the invention to provide a structure of blade and blade frame that can be readily combined and firmly fixed without the need for a high precision as in the prior art.
SUMMARY OF THE INVENTIONAn objective of the invention is to solve the above-mentioned problems by providing a fixture device of ceiling fan blade and blade frame so that their assembly is simpler.
To achieve the above objective, the invention includes:
a blade, whose one end has at least two through holes;
a blade frame, which has an inserting part for each of the through holes on the blade, the end of each of the inserting parts exposed from the through hole having a stopping part; and
at least one positioning element, which has a limiting part for each of the inserting parts;
wherein each of the stopping parts goes through the corresponding through hole and is restricted by the corresponding limiting part to position the blade and the blade frame, at least one of the limiting parts is movable to retract or extend relative to the positioning element, the positioning element further has a fixed limiting parts so that the movable limiting element blocks or leaves the corresponding stopping part as it extends and retracts, and the movable and fixed limiting parts are disposed along different limiting directions to position the blade and the blade frame.
The invention will become more fully understood from the detailed description given herein below illustration only, and thus is not limitative of the present invention, and wherein:
The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements.
A first embodiment of the invention provides a fixture device of ceiling fan blade and blade frame. It includes: a blade 1, a blade frame 2, and at least one positioning element 3.
The blade 1 has at least two through holes 11 on its one end. As shown in the drawing, the blade 1 in this embodiment has three through holes 11 arranged in a triangle.
The blade frame 2 has an inserting part 21 for each of the through holes 11 on the blade 1. A stopping part 211 is formed on the end of each of the inserting parts 21 exposed from the corresponding through hole 11. In this embodiment, the inserting parts 21 are independent elements and fixed on the blade frame 2 by screwing. Of course, they can be formed integrally with the blade frame 2.
The positioning element 3 has a limiting part 31 for each of the inserting part 21. Each of the stopping parts 211 goes through the corresponding through hole 11 and is restricted by the corresponding limiting part 31 to position the blade 1 and the blade frame 2. At least one of the limiting parts 31 is movable and can retract and extend with respect to the positioning element 3. When the movable limiting element 311 extends and retracts, it blocks and leaves the corresponding stopping part 211, respectively, thereby controlling the positioning and departing of the blade frame 2 and the blade 1.
As shown in
The number of positioning element 3 used in this embodiment is 1. Of course, the number thereof can be determined by the combination relation between the blade 1 and the blade frame 2.
In this embodiment, the movable limiting part 311 is at the central position of the positioning element 3. The positioning element 3 further has fixed limiting parts 312 on both ends. The movable and fixed limiting parts 311, 312 are disposed along different limiting directions. For example, in this embodiment, the fixed limiting parts 312 are embedded in the inserting part 21 in the direction opposite to that of the movable limiting part 311. Therefore, the limiting parts 311, 312 and the inserting part 21 can restrict each other when positioning.
The movable limiting part 311 of the positioning element 3 has a rod 311a accommodated inside an accommodating space 32 of the positioning element 3 to extend and retract. As the rod 311a extends and positions at the blocking position of the stopping part 211, it positions the blade 1 and the blade frame 2 with the fixed limiting parts 312.
The width of the stopping part 211 is larger than the outer diameter of the through hole 11. The fixed limiting part 312 of the positioning element 3 is embedded between the stopping part 211 and the blade 1. An embedding part 311b is pivotally disposed on the end of the rod 311a outside the accommodating space 32 to be embedded between the stopping part 211 and the blade 1.
The fixed limiting parts 312 recess toward the positioning element and have an arc shape. The embedding part 311a also has a recessed and arc-shaped structure. The first limiting parts 312 and the embedding part 311a are embedded into the corresponding first stopping part 211a between the second stopping part 211b and the blade 1.
A pushing rod 311c is disposed on the rod 311a of the movable positioning part 311. The positioning element 3 has a long groove 33 corresponding to the shifting direction of the pushing rod 311c. One side of the long groove 33 is formed with a connected limiting groove 34 that restricts the pushing rod 311c. The limiting groove 34 is formed at the place where the embedding part 311b embeds into the pushing rod 311c of the stopping part 211.
Please refer to
Take the structure of this embodiment as an example. When the blade 1 is drawn outwards relative to the blade frame 2, it is blocked by the two limiting parts 312. When the blade 1 is pushed inwards relative to the blade frame 2, it is blocked by the limiting part 311. Therefore, there is no problem of the blade falling off because the blade and the blade frame have blocking in the same direction as in the prior art.
The advantage of the invention, as seen from the above description, is a simple combination structure between the blade and the blade frame. Moreover, it prevents the blade from carelessly falling off the blade frame.
Of course, there are other embodiments that differ from the current one in details. Please refer to
According to the above-mentioned structure, when the rod 311a of the embodiment extends outwards, the elastic urging element 4 between it and the accommodating space 32 exerts a force towards the inserting part 21. Therefore, before use, one only needs to push the pushing rod 311c to retract the rod 311a. The pushing rod 311c is released when the positioning element 3 is at an appropriate position. In that case, the rod 311a extends out so that the embedding part 311b is embedded between the stopping part 211 and the blade 1. This achieves the same effects as the first embodiment.
Please refer to
As in the first embodiment, this embodiment also uses a pushing rod 311c along with a limiting groove 34 are provided between the limiting part 311 and the positioning element 3 to position the rod 311a in the accommodating space. The use of the limiting parts 311d, 312a in this embodiment can achieve the same effects as the previous two embodiments.
Please refer to
Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to people skilled in the art. Therefore, it is contemplated that the appended claims will cover all modifications that fall within the true scope of the invention.
Claims
1. A fixture device of blade and blade frame of a ceiling fan, comprising:
- a blade, which has at least two through holes;
- a blade frame, which has an inserting part for each of the through hole of the blade, each of the inserting parts having a stopping part on the end exposed from the through hole; and
- at least one positioning element, which has a limiting part for each of the inserting parts;
- wherein each of the stopping parts goes through the corresponding through hole and is restricted by the corresponding limiting part to position the blade and the blade frame, at least one of the limiting parts is movable to retract or extend relative to the positioning element, the positioning element further has a fixed limiting parts so that the movable limiting element blocks or leaves the corresponding stopping part as it extends and retracts, and the movable and fixed limiting parts are disposed along different limiting directions to position the blade and the blade frame.
2. The fixture device of blade and blade frame of a ceiling fan as in claim 1, wherein the movable limiting part of the positioning element has a rod accommodated in an accommodating space of the positioning element to extend and retract, and the rod extends and positions at the blocking position of the stopping part to position the blade and the blade frame along with the fixed limiting parts.
3. The fixture device of blade and blade frame of a ceiling fan as in claim 2, wherein the width of the stopping part is greater than the outer diameter of the through hole, the fixed limiting parts of the positioning element are embedded between the stopping part and the blade, and the movable limiting part is pivotally disposed with an embedding part at one end of the rod outside the accommodating space for being embedded between the stopping part and the blade.
4. The fixture device of blade and blade frame of a ceiling fan as in claim 3 with each of the stopping parts having a first stopping part and a second stopping part, wherein the inserting part exposes form the blade by its first stopping part for stopping the corresponding limiting part from moving horizontally with respect to the blades the inserting part goes through the through hole and positions between the second stopping part and the blade, the fixed limiting parts are recessed in an arc shape towards the positioning element due to the blocking of the limiting parts on the blade, the embedding part also has a recessed and arc-shaped structure, and the fixed limiting parts and the embedding part are embedded in the corresponding first stopping part between the second stopping part and the blade.
5. The fixture device of blade and blade frame of a ceiling fan as in claim 3, wherein the movable limiting part has a pushing rod on the rod, the positioning element has a long groove along the moving direction of the pushing rod, and an elastic urging element is disposed in the accommodating space for urging an end of the rod towards the inserting part.
6. The fixture device of blade and blade frame of a ceiling fan as in claim 3, wherein the movable limiting part has a pushing rod on the rod, the positioning element has a long groove along the moving direction of the pushing rod, a limiting groove is formed on one side of and in communication with the long groove to block the pushing rod, and the limiting groove is formed at the position where the embedding part embeds into the pushing rod of the stopping part.
7. The fixture device of blade and blade frame of a ceiling fan as in claim 2, wherein each of the stopping parts has a hole, each of the fixed limiting parts is formed with a pillar protruding towards the stopping part to be inserted into the hole, and the rod of the movable limiting part extends outwards from the accommodating space and goes into the hole.
8. The fixture device of blade and blade frame of a ceiling fan as in claim 7, wherein the movable limiting part has a pushing rod on the rod, the positioning element has a long groove along the moving direction of the pushing rod, and an elastic urging element is disposed in the accommodating space to urge against and end of the rod towards the inserting part.
9. The fixture device of blade and blade frame of a ceiling fan as in claim 7, wherein the movable limiting part has a pushing rod on the rod, the positioning element has a long groove along the moving direction of the pushing rod, a limiting groove is formed on one side of and in communication with the long groove to block the pushing rod, and the limiting groove is formed at the position where the embedding part embeds into the pushing rod of the stopping part.
10. The fixture device of blade and blade frame of a ceiling fan as in claim 1, wherein the limiting parts block the corresponding stopping parts in opposite directions.
Type: Application
Filed: Dec 14, 2008
Publication Date: Jun 17, 2010
Inventor: Teng-san TSENG (Wufong Township)
Application Number: 12/334,472
International Classification: F04D 25/02 (20060101); F04D 29/00 (20060101); F04D 29/60 (20060101);