FAST DETACHABLE POLISHING PLATE MECHANISM
The present invention provides a fast detachable polishing plate mechanism. The fast detachable polishing plate mechanism includes a polishing plate and a rod. The polishing plate has an adhesion unit disposed on the lower surface of the polishing plate. The rod connects straightly to the upper surface of the polishing plate. The rod is divided into an upper section, a middle section and a lower section from top to bottom, and only the middle section has a thread. The present invention further provides a hand-held machine tool having a drive shaft. The drive shaft has a tapped hole. The fast detachable polishing plate mechanism is mounted to the hand-held machine tool through the rod being inserted to the tapped hole.
The present application claims the priority of Taiwan Application No. 107212476, filed on Sep. 12, 2018, the disclosure of which is hereby incorporated by reference herein in its entirety.
BACKGROUND OF THE INVENTION 1. Field of the InventionThe present invention relates to polishing plates, and more specifically, to a fast detachable polishing plate which is easy to install and disassemble in a sander.
2. Description of Related ArtSanders are quite common in the industry and are mainly used to polish objects. The sander is based on a motor and is operated with various types of sanding elements. In practice, different sanding components are replaced depending on the user's needs, and they are often required to be installed or removed. At present, some types of sanding machines installed on the market are fixed components, which cannot be removed and replaced. Some types of sanding components installed in the sander can be replaced at will, but it is inconvenient to install or disassemble.
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Thus, there is an urgent need to develop a joint structure which is capable of disassembling quickly between the sander and the sanding components.
SUMMARY OF THE INVENTIONIn order to solve the foregoing problems of the prior art, the present invention provides a fast detachable polishing plate mechanism, which comprises: a polishing plate having an adhesion unit disposed on the lower surface thereof; and a rod connected straightly to the upper surface of the polishing plate, wherein the rod is divided into an upper section, a middle section and a lower section from top to bottom, and only the middle section has a thread.
In an embodiment, the fast detachable polishing plate mechanism further comprises a grinding unit fixed to the surface of the polishing plate through the adhesion unit.
In an embodiment, the grinding unit includes a sponge or a sandpaper.
In an embodiment, the adhesion unit includes a touch fastener.
In an embodiment, the end face of the upper section of the rod is cylindrical, spherical, chamfered or tapered.
The present invention provides a hand-held machine tool, which comprises a drive shaft having a tapped hole used for jointing to the rod of the fast detachable polishing plate mechanism described above.
Compared with the prior art, the fast detachable polishing plate mechanism provided by the present invention is easily jointed to the polishing device through the upper section of the rod being quickly aligned with and inserted into the tapped hole of the polishing device. Then, the thread at the middle section of the rod is coupled to the female thread in the tapped hole so that the polishing plate can be fixed to the polishing device. The fast detachable polishing plate mechanism of the present invention has the advantages of easy disassembly and quick loading. It is convenient for the user to replace the grinding components with different grinding units.
The present invention is described by the following specific embodiments. Those with ordinary skills in the arts can readily understand other advantages and functions of the present invention after reading the disclosure of this specification. The present disclosure may also be practiced or applied with other different implementations. Based on different contexts and applications, the various details in this specification can be modified and changed without departing from the spirit of the present disclosure.
It should be noted that the structures, ratios, sizes shown in the drawings appended to this specification are to be construed in conjunction with the disclosure of this specification in order to facilitate understanding of those skilled in the art. They are not meant, in any ways, to limit the implementations of the present invention, and therefore have no substantial technical meaning. Without affecting the effects created and objectives achieved by the present invention, any modifications, changes or adjustments to the structures, ratio relationships or sizes, are to be construed as fall within the range covered by the technical contents disclosed herein. Meanwhile, terms, such as “upper”, “inner”, “external”, “bottom”, “one”, “a” and the like, are for illustrative purposes only, and are not meant to limit the range implementable by the present invention. Any changes or adjustments made to their relative relationships, without modifying the substantial technical contents, are also to be construed as within the range implementable by the present invention.
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Since the surfaces of the lower section 221 and the upper section 223 of the rod 22 are not provided with threads, the upper section 223 is only a cylindrical structure easily to be inserted into the tapped hole 20 by guiding the user. The user can directly insert the upper section 223 into the tapped hole 20 of the sander without worrying about whether the internal thread 201 in the tapped hole 20 is aligned. The middle section 222 of the rod 22 is inserted into the tapped hole along the upper section 223. At the same time, the thread 2221 on the surface of the middle section 222 is automatically aligned with the internal thread 201 of the tapped hole 20. After that, the user applies the force to rotate the rod 22 so that the rod 22 is coupled to the tapped hole 20.
Besides, the improve structure of the lower section 221 can make the user easily disassemble the polishing plate. It is not easy for the user to disassemble the conventional structure of
In an embodiment of the present invention, the fast detachable polishing plate mechanism further comprises a grinding unit 23. The grinding unit 23 is fixed to the surface of the polishing plate 21 through the adhesion unit 211. The adhesion unit 211 can be, for example, a touch fastener. The grinding unit 23 includes, for example, a sponge or sandpaper, adhered to the polishing plate 21 via a touch fastener.
In the preferred embodiment of the present invention, the shape of the end surface B of the upper portion 223 of the rod 22 is planar. In other embodiments, the shape of the end surface B may be other shapes, such as a cylindrical, a spherical, a chamfered, or a tapered. Further, the end face B of the upper section 223 of the rod 22 cannot contact the bottom A of the tapped hole 20, thereby avoiding an increase in friction.
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The fast detachable polishing plate mechanism of the present invention is improved by the upper and lower sections of the rod connected to the sander being provided without threads, so that the rod can be quickly aligned when inserted in the tapped holes. It is more convenient to disassemble, making it easier for users to replace various grinding components.
The above embodiments are only used to illustrate the principles of the present invention, and should not be construed as to limit the present invention in any way. The above embodiments can be modified by those with ordinary skill in the art without departing from the scope of the present invention as defined in the following appended claims.
Claims
1. A fast detachable polishing plate mechanism, comprising:
- a polishing plate having an adhesion unit disposed on a lower surface thereof; and
- a rod connected straightly to an upper surface of the polishing plate, wherein the rod is divided into an upper section, a middle section and a lower section from top to bottom, and only the middle section has a thread.
2. The fast detachable polishing plate mechanism of claim 1, further comprising a grinding unit fixed to the lower surface of the polishing plate through the adhesion unit.
3. The fast detachable polishing plate mechanism of claim 2, wherein the grinding unit includes a sponge or a sandpaper.
4. The fast detachable polishing plate mechanism of claim 1, wherein the adhesion unit includes a touch fastener.
5. The fast detachable polishing plate mechanism of claim 1, wherein the end face of the upper section of the rod is cylindrical, spherical, chamfered or tapered.
6. A hand-held machine tool, including:
- the fast detachable polishing plate mechanism of any one of claim 1; and
- a drive shaft having a tapped hole used for jointing to the rod of the fast detachable polishing plate mechanism.
Type: Application
Filed: Jan 30, 2019
Publication Date: Mar 12, 2020
Inventors: Lin-Han YEN (New Taipei City), Chien-Hsiung HSIEH (New Taipei City)
Application Number: 16/261,894