Dust collector attached to a grinding tool machine

Abstract

A dust collecting device attached to a grinding tool machine includes a main body, an auxiliary pipe connected to the main body, and an air flow generating device. The main body is hollow and defines a first air flow passage. The auxiliary pipe has a second air flow passage communicating with the first air flow passage, and at least one air inlet communicating with the outside and away from the first air flow passage. The air flow generating device is arranged in the second air flow passage. When the air flow generating device is activated, external air is guided from the at least one air inlet into the first air flow passage through the second air flow passage.

Description

Technical Field

[0001] This invention relates to a dust collection component, and more particularly to a dust collection component attached to a grinding tool machine. Background Technology

[0002] Upon investigation, it was found that the dust collection components of grinding tools are designed to collect dust. Currently, in commercially available products, dust collection in grinding tools mainly relies on a suction fan inside the tool body. Specifically, this suction fan is driven by the motor of the grinding tool. When the motor of the grinding tool rotates, the suction fan also rotates, creating an airflow that carries the dust in the dust collection hood towards the dust collection connection pipe.

[0003] However, current handheld machine tools that rely solely on vacuum fans generally suffer from insufficient airflow, resulting in poor dust collection efficiency. Therefore, a technical solution utilizing a vacuum device has been developed in the grinding machine tool industry. This solution's vacuum device connects to the dust collection connection pipe of the vacuum component and actively draws air towards the dust collection hood upon startup, compensating for the shortcomings of those relying solely on vacuum fans, as disclosed in CN 112933791A. However, the aforementioned vacuum device and dust collection component are connected by a vacuum hose, which limits the working range of the grinding machine tool during operation due to the length of the vacuum hose, resulting in poor flexibility. Furthermore, the assembly position of the vacuum device in this solution is restricted; it can only be positioned at the end of the dust collection path. If the vacuum device is positioned in the middle of the dust collection path (as in CN 112933791A), it will not be effective. Figure 3 As revealed, the vacuum cleaner is easily damaged by dust on the dust collection path. Furthermore, the vacuum cleaner is difficult for the user to replace easily. Summary of the Invention

[0004] The main objective of this invention is to solve the problem of poor dust collection efficiency in conventional grinding tools.

[0005] To achieve the above objectives, the present invention provides a dust collection component attached to a grinding machine, comprising a main body, an auxiliary pipe, and an airflow generator. The main body is hollow and defines a first airflow channel. The auxiliary pipe is connected to the main body and has a second airflow channel communicating with the first airflow channel, and at least one air inlet located away from the first airflow channel and communicating with the outside. The airflow generator is disposed in the second airflow channel. After the airflow generator is activated, it guides external gas from the at least one air inlet through the second airflow channel into the first airflow channel.

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

[0007] In one embodiment, the airflow generating member has an air inlet side facing at least one air inlet and an air outlet side opposite to the air inlet side, the air outlet side facing the first airflow channel.

[0008] In one embodiment, the dust collection device includes a dust collection bag connected to the main body and communicating with the first airflow channel.

[0009] In one embodiment, the dust collection component includes a dust collection hood that connects the grinding tool to the main body and communicates with the first airflow channel.

[0010] In one embodiment, the dust collection component includes an extension tube connecting the body and the dust collection bag.

[0011] In one embodiment, the auxiliary pipe includes a pipe body having the second airflow passage and providing the airflow generating element therein, and a cover connected to the pipe body, wherein at least one air inlet is provided on the cover.

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

[0013] As disclosed in the foregoing invention, compared with conventional technology, the present invention has the following features: the dust collection device of the present invention is provided with the airflow generating device, and the airflow generating device is located in the second airflow channel of the auxiliary pipe. When the airflow generating device is activated, it guides external gas from the at least one air inlet into the first airflow channel through the second airflow channel. Attached Figure Description

[0014] Figure 1 This is an exploded view of a dust collection component according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of a dust collection component paired with a grinding tool according to an embodiment of the present invention;

[0016] Figure 3 This is an exploded view of a dust collection component paired with a grinding tool according to an embodiment of the present invention;

[0017] Figure 4 ,for Figure 2 A schematic diagram of the cross section of line segment AA;

[0018] Figure 5 ,for Figure 4 A schematic diagram of the BB line segment cross section;

[0019] Figure 6 ,for Figure 4 A schematic diagram of the BB line segment cross section implementation.

[0020] [Symbol Explanation]

[0021] 20: Dust collection components

[0022] 21: Main Body

[0023] 211: First airflow channel

[0024] 212: First Axis

[0025] 213: Air Inlet

[0026] 214: Air vent

[0027] 22: Auxiliary pipe

[0028] 221: Second airflow channel

[0029] 222: Air Inlet

[0030] 223: Second Axis

[0031] 224: Pipe body

[0032] 225: Cover

[0033] 23: Airflow generating components

[0034] 231: First airflow

[0035] 232: Air intake side

[0036] 233: Air outlet side

[0037] 24: Dust Collection Cover

[0038] 241: Assembly port

[0039] 25: Dust collection bag

[0040] 251: Bag opening

[0041] 252: Connecting pipe

[0042] 26: Extension tube

[0043] 261: Pipe fittings

[0044] 262: Screw-in structure

[0045] 27: Filter element

[0046] 28: Bump

[0047] 281: Wing

[0048] 30: Grinding machine tool

[0049] 31: Machine tool body

[0050] 311: Heat dissipation holes

[0051] 312: Head

[0052] 313: Grip section

[0053] 314: Through hole

[0054] 32: Motor

[0055] 33: Eccentric block

[0056] 34: Vacuum Cleaner Fan

[0057] 341: Second airflow

[0058] 342: Dust collection airflow

[0059] 343: First blade

[0060] 344: Second blade

[0061] 35: Grinding disc

[0062] 36: Groove

[0063] 361: Positioning Surface

[0064] 37: Electronic control module

[0065] 38: Heat dissipation fin assembly Detailed Implementation

[0066] The detailed description and technical content of this invention are now explained in conjunction with the accompanying drawings:

[0067] Please see Figures 1 to 6 The present invention provides a dust collection component 20, which includes a main body 21, an auxiliary pipe 22, and an airflow generator 23. The main body 21 is hollow and defines a first airflow channel 211. The auxiliary pipe 22 is connected to the main body 21 and is hollow. The auxiliary pipe 22 has a second airflow channel 221 and at least one air inlet 222. The second airflow channel 221 communicates with the first airflow channel 211. The at least one air inlet 222 is located on the side of the second airflow channel 221 away from the first airflow channel 211 and communicates with the outside. The airflow generator 23 is disposed in the second airflow channel 221. After the airflow generator 23 is activated, it guides external gas from the at least one air inlet 222 through the second airflow channel 221 into the first airflow channel 211, forming a first airflow 231.

[0068] Continuing from the above, the dust collection component 20 of the present invention further includes a dust collection hood 24 and a dust collection bag 25, and the implementation of the dust collection component 20 is paired with a grinding tool 30. It should be noted that the grinding tool 30 collects dust with the dust collection bag 25 and is used as a handheld tool. The grinding tool 30 has a tool body 31, a motor 32, an eccentric block 33, a dust extraction fan 34, and a grinding disc 35. The motor 32 is located inside the tool body 31, the eccentric block 33 is located inside the tool body 31 and is connected to the motor 32 and driven by the motor 32, the dust extraction fan 34 is located inside the tool body 31 and is connected to the eccentric block 33, and the dust extraction fan 34 is driven by the eccentric block 33, and the grinding disc 35 is connected to the eccentric block 33 and is driven by the eccentric block 33. Furthermore, the dust collection hood 24 has an assembly port 241, which is connected to the grinding tool machine 30. The dust collection hood 24 is connected to the main body 21 and communicates with the first airflow channel 211. The dust collection bag 25 is connected to the main body 21 and is opposite to the dust collection hood 24. The dust collection bag 25 is communicated with the first airflow channel 211 to collect dust from the first airflow channel 211.

[0069] During implementation, the grinding machine 30 is started, the motor 32 rotates, and drives the dust extraction fan 34 and the grinding disc 35 to rotate, allowing the grinding disc 35 to grind a workpiece (not shown). At this time, the dust extraction fan 34 rotates, forming a second airflow 341, which flows from the dust collection hood 24 towards the first airflow channel 211. Simultaneously, the airflow generator 23 is started, causing the first airflow 231 to flow from the at least one air inlet 222 into the first airflow channel 211 through the second airflow channel 221. Subsequently, the first airflow 231 and the second airflow 341 merge to form a dust-collecting airflow 342, which flows from the main body 21 towards the dust collection bag 25, allowing dust to be collected inside the dust collection bag 25.

[0070] As described above, the grinding tool 30 implemented with this invention is a handheld tool that uses the dust collection bag 25 to collect dust. The invention utilizes an airflow generator 23 located within the second airflow channel 221. When activated, the airflow generator 23 guides external gas from at least one air inlet 222 through the second airflow channel 221 into the first airflow channel 211, thereby assisting in the collection of dust within the dust collection hood 24 into the dust collection bag 25, thus improving the dust collection efficiency of the grinding tool 30 implemented with this invention. Furthermore, the dust collection component 20 is implemented with the dust collection bag 25, and the ease of replacement of the dust collection bag 25 facilitates the use of the dust collection component 20. Moreover, the grinding tool 30 implemented with this invention offers greater mobility compared to conventional models equipped with a vacuum cleaner, and its working range is no longer limited by the vacuum cleaner.

[0071] Please refer to the above. Figures 4 to 6 In one embodiment, the first airflow channel 211 of the main body 21 defines a first axis 212, and the second airflow channel 221 of the auxiliary pipe 22 defines a second axis 223. The angle between the first axis 212 and the second axis 223 is less than 90 degrees. Furthermore, the airflow generating element 23 has an air inlet side 232 and an air outlet side 233. The air inlet side 232 faces the at least one air inlet 222 to draw gas into the at least one air inlet 222, while the air outlet side 233 faces the first airflow channel 211 to provide the first airflow 231 to the first airflow channel 211.

[0072] Additionally, please see Figures 1 to 4 The main body 21 has at least one air inlet 213 and at least one air outlet 214. The at least one air inlet 213 and the at least one air outlet 214 communicate with the first airflow channel 211 and are located at opposite ends of the main body 21. In this embodiment, the at least one air inlet 213 communicates with the dust collection hood 24, and the at least one air outlet 214 communicates with the dust collection bag 25. In another embodiment, the dust collection component 20 further includes an extension tube 26, which connects the main body 21 and the dust collection bag 25, and connects the at least one air outlet 214 with a bag opening 251 of the dust collection bag 25. Furthermore, the extension tube 26 can be assembled from multiple tubes 261, and the assembly of the multiple tubes 261 can be implemented using at least one screw connection structure 262. Furthermore, the dust collection bag 25 is a replaceable component. The bag opening 251 of the dust collection bag 25 can be formed by the body of the dust collection bag 25 or by a connecting tube 252 provided on the dust collection bag 25.

[0073] Continuing from the above, the auxiliary pipe 22 of the present invention has a pipe body 224 and a cover 225. The pipe body 224 is connected to the main body 21 and defines the second airflow channel 221. The pipe body 224 provides the airflow generator 23 for placement therein. The cover 225 has at least one air inlet 222. The cover 225 is connected to the pipe body 224 and can be selectively separated from the pipe body 224. When the cover 225 is separated from the pipe body 224, the airflow generator 23 can be selectively removed from the pipe body 224, thereby facilitating the installation and maintenance of the airflow generator 23. Furthermore, in this embodiment, the dust collection component 20 further has at least one filter element 27. The at least one filter element 27 is disposed in the second airflow channel 221. The at least one filter element 27 is located on the air inlet side 232 of the airflow generator 23 and faces the at least one air inlet 222.

[0074] On the other hand, please see Figures 1 to 4The dust collection component 20 of the present invention has at least one assembly structure, which is connected to the grinding tool 30, allowing the dust collection component 20 to be attached to the grinding tool 30. In this embodiment, the at least one assembly structure may be a groove (e.g., reference numeral 36) or a protrusion (e.g., reference numeral 28), and the form of the at least one assembly structure is limited to its fit with the grinding tool 30, and not limited to what is depicted in the drawings of this invention. Figure 4 For example, the grinding tool 30 of the present invention is provided with the groove 36, and the main body 21 is provided with the protrusion 28. Furthermore, the groove 36 of the present invention has a positioning surface 361, which contacts the protrusion 28 to position the protrusion 28 in its assembly position. In another embodiment, the protrusion 28 has at least one wing 281, which corresponds to the groove 36 to help improve assembly stability.

[0075] In addition to the foregoing, the vacuum fan 34 of the present invention has a plurality of first blades 343 and a plurality of second blades 344. The plurality of first blades 343 face the grinding disc 35, and the plurality of second blades 344 face the motor 32. When the vacuum fan 34 rotates, the plurality of first blades 343 form the second airflow 341, and the plurality of second blades 344 dissipate heat from the motor 32. Furthermore, the grinding tool 30 has an electronic control module 37 connected to the motor 32. The electronic control module 37 is disposed within the tool body 31 and controls the operation of the motor 32. The tool 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 with external air to dissipate heat from the interior of the tool body 31. In this embodiment, at least a portion of the electronic control module 37 is disposed facing the at least one heat dissipation hole 311. Furthermore, the grinding tool 30 has at least one heat dissipation fin assembly 38 connected to the electronic control module 37. This assembly faces the at least one heat dissipation hole 311 and receives heat from the gas passing through it, thereby providing a cooling effect to the electronic control module 37. On the other hand, the tool body 31 has a head 312 and a grip 313. The head 312 houses the motor 32 and is connected to the dust collection hood 24. The grip 313 is connected to the head 312 and can be assembled with the body 21. In this embodiment, the head 312 has at least one through hole 314 on the side near the dust collection hood 24, allowing airflow generated by the start-up of the vacuum fan 34 to pass through it.

Claims

1. A dust collection component attached to a grinding tool machine, characterized in that, Include: A main body, the interior of which is hollow and a first airflow channel is defined; An auxiliary pipe, connected to the main body, the auxiliary pipe having a second airflow channel communicating with the first airflow channel, and at least one air inlet located away from the first airflow channel and communicating with the outside; and An airflow generator is disposed in the second airflow channel. After the airflow generator is activated, it guides external gas from the at least one air inlet through the second airflow channel into the first airflow channel.

2. The dust collection component attached to a grinding machine as described in claim 1, characterized in that, The angle between the first airflow channel of the main body and the second airflow channel of the auxiliary pipe is less than 90 degrees.

3. The dust collection component attached to a grinding machine as described in claim 2, characterized in that, The airflow generating component has an air inlet side facing at least one air inlet and an air outlet side opposite to the air inlet side, the air outlet side facing the first airflow channel.

4. The dust collection component attached to a grinding machine as described in any one of claims 1 to 3, characterized in that, The dust collection device includes a dust collection bag that connects to the main body and communicates with the first airflow channel.

5. The dust collection component attached to a grinding machine as described in claim 4, characterized in that, The dust collection component includes a dust collection hood that connects the grinding tool to the main body and communicates with the first airflow channel.

6. The dust collection component attached to a grinding machine as described in claim 5, characterized in that, The dust collection device includes an extension tube connecting the main body and the dust collection bag.

7. The dust collection component attached to a grinding machine as described in any one of claims 1 to 3, characterized in that, The auxiliary pipe includes a pipe body having the second airflow passage and the airflow generating element disposed therein, and a cover connected to the pipe body, wherein at least one air inlet is disposed on the cover.

8. The dust collection component attached to a grinding machine as described in claim 7, characterized in that, The dust collection component has at least one assembly structure disposed on the main body and connected to the grinding tool.

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