DUST COLLECTION COMPONENT ATTACHED TO GRINDING TOOL MACHINE

FIELD OF THE INVENTION

[0001]The invention relates to a dust collection component, particularly a dust collection component attached to a grinding tool machine.

BACKGROUND OF THE INVENTION

[0002]The dust collection component of a grinding tool machine is designed to collect dust. In current commercially available products, dust collection in grinding tool machines primarily relies on the vacuum fan within the machine itself. Specifically, the vacuum fan is driven by the motor of the grinding tool machine. When the motor of the grinding tool machine rotates, the vacuum fan also rotates, creating an airflow that drives the dust inside the dust collection shield towards the dust collection connection pipe.

[0003]However, handheld tool machines that use a vacuum fan typically suffer from insufficient airflow, leading to poor dust collection efficiency. As a result, a new technical solution utilizing a dust collection device has been developed in the field of grinding tool machines. In this solution, a dust collection device is connected to a dust collection shield via a dust collection connection pipe, and actively extracts air towards the dust collection shield after activation. This compensates for the shortcomings of using only a vacuum fan, as described in CN 112933791A. However, the connection between the dust collection device and the dust collection component via a vacuum pipe restricts motion of the grinding tool, limiting the working range and flexibility due to the fixed length of the vacuum pipe. Additionally, an assembly position of the dust collection device is restricted, as it can only be placed at an end of a dust collection path. When placed in the middle of the dust collection path (as shown in FIG. 3 of CN 112933791A), the dust collection device is prone to damage due to dust accumulation along the path. Furthermore, the dust collection device is difficult to replace easily when implemented.

SUMMARY OF THE INVENTION

[0004]A main object of the invention is to solve the problem of poor dust collection efficiency commonly found in conventional grinding tool machines.

[0005]In order to achieve the above objects, the invention provides a dust collection component attached to a grinding tool machine, including a main body, an auxiliary pipe, and an airflow-generating component. An interior of the main body is hollow and defines a first airflow passage. The auxiliary pipe is connected to the main body, including a second airflow passage communicating with the first airflow passage, at least one intake port distanced from the first airflow passage and communicated with outside. The airflow-generating component is provided within the second airflow passage. The airflow-generating component guides external air from the at least one intake port through the second airflow passage into the first airflow passage after activation.

[0006]In one embodiment, an angle between the first airflow passage of the main body and the second airflow passage of the auxiliary pipe is less than 90 degrees.

[0007]In one embodiment, the airflow-generating component includes an intake side facing the at least one intake port, and an exhaust side opposite to the intake side, the exhaust side facing the first airflow passage.

[0008]In one embodiment, the dust collection component comprises a dust collection bag connected to the main body and communicated with the first airflow passage.

[0009]In one embodiment, the dust collection component comprises a dust collection shield connected to the main body, and communicated with the first airflow passage.

[0010]In one embodiment, the dust collection component includes an extension pipe connected to the main body and the dust collection bag.

[0011]In one embodiment, the auxiliary pipe comprises a pipe body providing with the second airflow passage and providing the airflow-generating component to be placed therein, and a cover connected to the pipe body and provided with the at least one intake port.

[0012]In one embodiment, the dust collection component is provided with at least one assembly structure on the main body and connected to the grinding tool machine.

[0013]Through the aforementioned implementation of the invention, the invention has the following characteristics compared with the prior art.

[0014]The dust collection component of the invention comprises the airflow-generating component provided within the second airflow passage, and the airflow-generating component guides external air from the at least one intake port through the second airflow passage into the first airflow passage after activation.

BRIEF DESCRIPTION OF THE DRAWINGS

[0015]FIG. 1 is an exploded schematic diagram of the dust collection component of an embodiment of the present invention.

[0016]FIG. 2 is a schematic diagram showing the dust collection component in conjunction with the structure of the grinding tool machine in an embodiment of the present invention.

[0017]FIG. 3 is an exploded schematic diagram showing the dust collection component in conjunction with the grinding tool machine in an embodiment of the present invention.

[0018]FIG. 4 is a sectional view along line A-A of FIG. 2.

[0019]FIG. 5 is a sectional view along line B-B of FIG. 4.

[0020]FIG. 6 is an implementation schematic diagram of the sectional view along line B-B of FIG. 4.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021]The detailed description and technical content of the invention are described below with reference to the accompanying extractings.

[0022]Please refer to FIG. 1. FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6. The invention provides a dust collection component 20, comprising a main body 21, an auxiliary pipe 22, and an airflow-generating component 23. An interior of the main body 21 is hollow and defines a first airflow passage 211. The auxiliary pipe 22 is connected to the main body 21. The auxiliary pipe 22 is hollow. The auxiliary pipe 22 includes a second airflow passage 221 and at least one intake port 222. The second airflow passage 221 is communicated with the first airflow passage 211. The at least one intake port 222 is located on a side of the second airflow passage 221, which is distanced from the first airflow passage 211. The at least one intake port 222 is communicated with external environment. The airflow-generating component 23 is provided within the second airflow passage 221. The airflow-generating component 23 guides external air from the at least one intake port 222 through the second airflow passage 221 into the first airflow passage 211 after activation, and forms a first airflow 231.

[0023]The dust collection component 20 further includes a dust collection shield 24 and a dust collection bag 25, and the dust collection component 20 is implemented in conjunction with a grinding tool machine 30. It should first be noted that the grinding tool machine 30 uses the dust collection bag 25 to collect dust and is used as a handheld tool machine. The grinding tool machine 30 includes a tool machine body 31, a motor 32, an eccentric block 33, a vacuum fan 34, and a grinding disc 35. The motor 32 is located inside the tool machine body 31. The eccentric block 33 is located inside the tool machine body 31 and is connected to the motor 32 to be driven by the motor 32. The vacuum fan 34 is located inside the tool machine body 31 and is connected to the eccentric block 33, and the vacuum fan 34 is driven by the eccentric block 33. The grinding disc 35 is connected to the eccentric block 33 and is driven by eccentric block 33. Additionally, the dust collection shield 24 includes an assembly port 241 connected to the grinding tool machine 30. The dust collection shield 24 is connected to the main body 21 and communicates with the first airflow passage 211. The dust collection bag 25 is connected to the main body 21, positioned opposite the dust collection shield 24, and communicating with the first airflow passage 211 to collect dust coming from the first airflow passage 211.

[0024]In implementation, when the grinding tool machine 30 is activated, the motor 32 rotates and drives both the vacuum fan 34 and the grinding disc 35 to rotate, allowing the grinding disc 35 to grind a workpiece (not shown in the diagram). At this moment, the vacuum fan 34 rotates and generates a second airflow 341, which flows from the dust collection shield 24 towards the first airflow passage 211. Simultaneously, the airflow-generating component 23 is activated, causing the first airflow 231 to flow from the at least one intake port 222 through the second airflow passage 221 into the first airflow passage 211. Subsequently, the first airflow 231 and the second airflow 341 merge to form a dust collection airflow 342, which flows from the main body 21 towards the dust collection bag 25 to collect dust in the dust collection bag 25.

[0025]As can be seen from the above, the grinding tool machine 30 used in conjunction with the invention is a handheld tool machine collecting dust by the dust collection bag 25. The airflow-generating component 23 is positioned within the second airflow passage 221. The airflow-generating component 23 guides external air from the at least one intake port 222 through the second airflow passage 221 into the first airflow passage 211 upon activation, thereby assisting the dust collection shield 24 in collecting dust into the dust collection bag 25. This enhances the dust collection efficiency of the grinding tool machine 30 of the invention. Furthermore, the dust collection component 20 implemented with the dust collection bag 25 benefits from the easy replaceability of the dust collection bag, and improves the usability of the dust collection component 20. Compared to conventional implementations with vacuum devices, the grinding tool machine 30 of the invention offers more flexible mobility and is no longer limited by a working range of the vacuum device.

[0026]Please refer to FIG. 4, FIG. 5, and FIG. 6. In one embodiment, the first airflow passage 211 of the main body defines a first axis 212, the second airflow passage 221 of the auxiliary pipe 22 defines a second axis 223, and an angle between the first axis 212 and the second axis 223 is less than 90 degrees. Additionally, the airflow-generating component 23 includes an intake side 232 and an exhaust side 233. The intake side 232 is opposite to the exhaust side 233. The intake side 232 faces and extracts air from the at least one intake port 222, and the exhaust side 233 faces the first airflow passage 211 and provides the first airflow 231.

[0027]Please refer to FIG. 1. FIG. 2, FIG. 3, and FIG. 4. The main body 21 includes at least one air inlet 213 and at least one exhaust 214, both the at least one air inlet 213 and the at least one exhaust 214 communicate with the first airflow passage 211 and respectively located on both sides of the main body. In this embodiment, the at least one air inlet 213 communicates with the dust collection shield 24, and the at least one exhaust 214 communicates with the dust collection bag 25. In one embodiment, the dust collection component 20 further includes an extension pipe 26 connected to the main body 21 and the dust collection bag 25, and communicated to the at least one exhaust 214 and a bag mouth 251 of the dust collection bag 25. Additionally, the extension pipe 26 is assembled by a plurality of pipe sections 261, and an assembly of the plurality of pipe sections 261 may be implemented by using at least one threaded connection structure. The dust collection bag 25 is replaceable. The bag mouth 251 of the dust collection bag 25 may be formed by a body of the dust collection bag 25, or a connection pipe 252 provided on the dust collection bag 25.

[0028]Furthermore, the auxiliary pipe 22 includes a pipe body 224 and a cover 225. The pipe body 224 is connected to the main body 21 and defines the second airflow passage 221. The pipe body 224 provides with the airflow-generating component 23 to be placed therein. The cover 225 is provided with the at least one intake port 222 and is connected to the pipe body 224, which can be selectively detached from the pipe body 224. When the cover 225 is detached from the pipe body 224, the airflow-generating component 23 can be selectively removed from the pipe body 224, facilitating the installation and maintenance of the airflow-generating component 23. In one embodiment, the dust collection component 20 further includes at least one filter 27 located inside the second airflow passage 221. The at least one filter 27 is positioned on the intake side 232 of the airflow-generating component 23 and is arranged to face the at least one intake port 222.

[0029]On the other hand, referring to FIG. 1, FIG. 2, FIG. 3, and FIG. 4. The dust collection component 20 is provided with at least one assembly structure connected to the grinding tool machine 30, allowing the dust collection component 20 to be attached to the grinding tool machine 30. In one embodiment, the at least one assembly structure may be a groove or a protrusion. The specific form of the assembly structure is designed to fit with the grinding tool machine 30 and is not limited to the specific examples shown in the figures. For example, in FIG. 4, the grinding tool machine 30 is provided with a groove 36, while the main body 21 is provided with a protrusion 28. Furthermore, the groove 36 is provided with a positioning surface 361 contacted to the protrusion 28 to position an assembly of the protrusion 28. In one embodiment, the protrusion 28 is provided with at least one wing part 281 corresponds to the groove 36, helping to enhance the stability of the assembly.

[0030]In addition to the above, the vacuum fan 34 includes a plurality of first blades 343 and a plurality of second blades 344. The plurality of first blades 343 face the grinding disc 35, while the plurality of second blades 344 face the motor 32. When the vacuum fan 34 rotates, the plurality of first blades 343 generate the second airflow 341, and the plurality of second blades 344 provide cooling for the motor 32. Furthermore, the grinding tool machine 30 is provided with an electronic control module 37 connected to the motor 32. The electronic control module 37 is located within the tool machine body 31 and controls an operation of the motor 32. The tool machine body 31 is provided with at least one heat dissipation hole 311. The at least one heat dissipation hole 311 provides the vacuum fan 34 to extract external air and dissipate heat inside the tool machine body 31. In one embodiment, at least part of the electronic control module 37 is arranged to face the at least one heat dissipation hole 311. Additionally, the grinding tool machine 30 includes at least one heat dissipation fin assembly 38 connected to the electronic control module 37. The at least one heat dissipation fin assembly 38 is positioned to face the at least one heat dissipation hole 311 and receive air from the at least one heat dissipation hole 311 to help dissipate heat, thus providing cooling for the electronic control module 37. On the other hand, the tool machine body 31 includes a head portion 312 and a handle portion 313. The head portion 312 is provided with the motor 32 and is connected to the dust collection shield 24. The handle portion 313 connects to the head portion 312 and is assembled with the main body 21. In one embodiment, the head portion 312 close to the dust collection shield 24 is provided with at least one through hole 314, allowing an airflow generated by the vacuum fan 34 to flow through thereof.