A dust-collecting handheld circular saw
By installing a dust collection box and fan on a handheld circular saw, dust is sucked in and filtered, solving the health and environmental hazards of dust and achieving efficient dust removal and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHANGJIAGANG CHUANGJI MACHINERY MFG
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-26
AI Technical Summary
The dust and debris generated during the cutting process by existing handheld circular saws pose a hazard to the health of workers and the environment.
The design incorporates a dust-collecting handheld circular saw. By incorporating a dust collection box and a fan, the fan draws the dust generated during cutting into a collection pipe, which then passes through multiple stages of piping into the dust collection box. Finally, the dust is filtered through a screen and discharged, achieving efficient dust collection.
It effectively protects the health of workers, keeps the working environment clean, improves dust collection efficiency, simplifies the filter cloth replacement and cleaning process, and enhances ease of use.
Smart Images
Figure CN224275420U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of power tool technology, and in particular relates to a dust-collecting handheld circular saw. Background Technology
[0002] Handheld circular saws are a common type of power tool, widely used for cutting materials such as wood, metal, and plastic. However, existing handheld circular saws generate a large amount of dust and debris during the cutting process of wood and other related materials, which may not only harm the health of workers but also harm the environment. Therefore, we propose a dust-collecting handheld circular saw. Utility Model Content
[0003] The purpose of this invention is to provide a dust-collecting handheld circular saw. By setting up a dust collection box, specifically by starting a fan, the dust generated during the cutting process is sucked into the air collection pipe, and then enters the flexible hose through the air supply pipe, air inlet and outlet, and then enters the dust collection box. When the dust-containing air enters the dust collection box, it is filtered and discharged through the filter screen. This solves the problem that existing handheld circular saws not only harm the health of workers, but are also detrimental to environmental protection.
[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0005] This utility model relates to a dust-collecting handheld circular saw, comprising a cutting component and a dust collection component. The cutting component includes a protective shell, inside which the circular saw is rotatably connected. A motor is fixedly connected to the back of the protective shell, and the front output end of the motor is fixedly connected to the back of the circular saw. A baffle is fixedly connected to the bottom of the protective shell. The dust collection component includes two air collection ports, the bottom of which is fixedly connected to the top of the baffle. An air collection pipe is fixedly connected to the top of the air collection ports, and an air supply pipe is fixedly connected to the top of the two air collection pipes. A fan is fixedly connected to the back of the motor. An air inlet is fixedly connected to the left side of the fan, and the front of the air inlet is fixedly connected to the back of the air supply pipe. An air outlet is fixedly connected to the right side of the fan, and a flexible hose is provided to the right side of the air outlet. A dust collection box is fixedly connected to the right side of the flexible hose, and a filter screen is fixedly connected to the right side of the dust collection box. The dual air collection ports, combined with multi-stage pipe connections, form a directional airflow channel, allowing the dust generated during cutting to be quickly sucked into the dust collection box, effectively improving dust collection efficiency and maintaining a clean working environment.
[0006] Furthermore, a connecting cap is fixedly connected to the side of the hose near the air outlet. The inner wall of the connecting cap is threaded to the outer surface of the air outlet. The sealing structure of the threaded connection ensures that the airflow transmission is leak-free, while also enabling quick assembly and disassembly of the hose, facilitating cleaning and maintenance, and preventing accidental loosening.
[0007] Furthermore, a handle is fixedly connected to the top of the baffle, and the left side of the handle is fixedly connected to the right side of the motor. The integrated layout of the motor and fan optimizes the center of gravity distribution of the equipment, reduces the vibration amplitude during hand operation, and shortens the airflow transmission path to improve dust removal efficiency.
[0008] Furthermore, the top of the dust collection box is hinged with a cover plate, and the bottom of the cover plate is fixedly connected with a buckle plate. The buckle plate is made of elastic material, and the bottom of the dust collection box is fixedly connected with a snap fastener. The outer surface of the snap fastener contacts the inside of the buckle plate. The snap-plate opening and closing structure enables one-handed opening operation, which facilitates quick emptying of accumulated dust and avoids secondary dust re-entrainment when opening the cover.
[0009] Furthermore, the top and bottom inner walls of the dust collector are fixedly connected with sliding grooves, and sliders are slidably connected to the inner walls of the sliding grooves. Filter cloths are fixedly connected to the corresponding sides of the two sliders. The front and back sides of the sliders contact the inner walls of the dust collector and the inner walls of the cover plate, respectively. The sliding groove and slider design allows the filter cloths to be pulled out and replaced, and they can be cleaned and maintained without disassembling the dust collector.
[0010] Furthermore, each of the four corners of the bottom of the dust collection box is equipped with a caster wheel, which facilitates the movement of the equipment on the work site and improves ease of use.
[0011] This utility model has the following beneficial effects:
[0012] 1. This utility model, by setting up a dust collection box, specifically by starting a fan to draw the dust generated during the cutting process into the air collection pipe, then through the air supply pipe, through the air inlet and air outlet into the hose, and then through the hose into the dust collection box. When the dust-containing air enters the dust collection box, it is discharged through the filter screen, which protects the health and life of the workers and is also beneficial to environmental protection.
[0013] 2. This utility model, by setting up a filter cloth, specifically by forcefully pulling the buckle plate to disengage it from the clip, then opening the cover plate, pulling the slider to allow it to slide along the inner wall of the groove, and removing the filter cloth for replacement and cleaning the inside of the dust collection box. The same principle applies during installation; after the outer surface of the slider contacts the inner wall of the dust collection box, the cover plate is closed, allowing the inside of the buckle plate to contact the outer surface of the clip. This enables rapid replacement of the filter cloth and improves work efficiency.
[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the overall rear structure of this utility model;
[0018] Figure 3 This utility model Figure 3 Schematic diagram of the enlarged structure of A in the middle;
[0019] Figure 4 This is a schematic diagram of the bottom structure of the dust collector box of this utility model;
[0020] Figure 5 This is a schematic diagram of the internal structure of the dust collector box of this utility model.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 1. Cutting assembly; 11. Protective shell; 111. Circular saw; 112. Motor; 12. Baffle; 121. Handle; 2. Dust removal assembly; 21. Air collection port; 22. Air collection pipe; 221. Air supply pipe; 23. Fan; 231. Air inlet; 232. Air outlet; 233. Connecting cover; 234. Flexible hose; 24. Dust collection box; 241. Cover plate; 242. Buckle plate; 243. Buckle; 25. Slide groove; 251. Slider; 252. Filter cloth; 26. Filter screen; 27. Casters. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0024] Please see Figures 1-5As shown, this utility model is a dust-collecting handheld circular saw, including a cutting component 1 and a dust collection component 2. The cutting component 1 includes a protective shell 11, with a circular saw 111 rotatably connected inside the protective shell 11. A motor 112 is fixedly connected to the back of the protective shell 11, and the front output end of the motor 112 is fixedly connected to the back of the circular saw 111. A baffle 12 is fixedly connected to the bottom of the protective shell 11. The dust collection component 2 includes two air collection ports 21, the bottom of which is fixedly connected to the top of the baffle 12. An air collection pipe 22 is fixedly connected to the top of the air collection ports 21, and an air supply pipe 221 is fixedly connected to the top of the two air collection pipes 22. A fan 23 is fixedly connected to the back of the motor 112, and an air inlet 231 is fixedly connected to the left side of the fan 23. The front of the fan 23 is fixedly connected to the back of the air supply pipe 221. The right side of the fan 23 is fixedly connected to the air outlet 232. The right side of the air outlet 232 is provided with a flexible hose 234. The right side of the flexible hose 234 is fixedly connected to the dust collection box 24. The right side of the dust collection box 24 is fixedly connected to the filter screen 26. By setting up the dust collection box 24, the fan 23 is started to draw the dust generated during the cutting process into the air collection pipe 22. Then, the dust enters the flexible hose 234 through the air supply pipe 221, the air inlet 231 and the air outlet 232, and then enters the dust collection box 24 through the flexible hose 234. When the dust-containing air enters the dust collection box 24, it is filtered and discharged through the filter screen 26. This protects the health and safety of the workers and is also beneficial to environmental protection.
[0025] A connecting cover 233 is fixedly connected to the side of the hose 234 near the air outlet 232, and the inner wall of the connecting cover 233 is threadedly connected to the outer surface of the air outlet 232.
[0026] The back of the motor 112 is fixedly connected to the front of the fan 23, and a handle 121 is fixedly connected to the top of the baffle 12. The left side of the handle 121 is fixedly connected to the right side of the motor 112.
[0027] The dust collector 24 has a cover plate 241 on the back, and a buckle plate 242 is fixedly connected to the bottom of the cover plate 241. The buckle plate 242 is made of elastic material, and a buckle 243 is fixedly connected to the bottom of the dust collector 24. The outer surface of the buckle 243 is in contact with the inside of the buckle plate 242.
[0028] The dust collector 24 has a sliding groove 25 fixedly connected to both the top and bottom inner walls. A slider 251 is slidably connected to the inner wall of the sliding groove 25. Filter cloths 252 are fixedly connected to the corresponding sides of the two sliders 251. The front and back of the sliders 251 contact the inner wall of the dust collector 24 and the inner wall of the cover plate 241, respectively. By setting the filter cloth 252, specifically by forcefully pushing the buckle 242 to disengage it from the latch 243, then opening the cover plate 241, and pulling the slider 251 to slide it along the inner wall of the sliding groove 25, the filter cloth 252 can be removed for replacement and cleaning of the inside of the dust collector 24. The same principle applies during installation. After the outer surface of the slider 251 contacts the inner wall of the dust collector 24, the cover plate 241 is closed, so that the inside of the buckle 242 contacts the outer surface of the latch 243. This allows for quick replacement of the filter cloth 252, improving work efficiency.
[0029] The dust collection box 24 is equipped with casters 27 at each of the four corners of its bottom.
[0030] A specific application of this embodiment is as follows: In use, first rotate the connecting cover 233 to connect the air outlet 232 to the hose 234. Start the motor 112 to drive the circular saw 111 to rotate inside the protective shell 11, causing the bottom of the baffle 12 to contact the material. Use the handle 121 to push the device for cutting. Then, start the fan 23 to draw the dust generated during cutting into the air collection pipe 22. The dust then passes through the air supply pipe 221, the air inlet 231, and the air outlet 232 into the hose 234, and then through the hose 234 into the dust collection box 24. When the dust-containing air enters the dust collection box 24... After being filtered by the filter cloth 252, the dust is discharged through the filter screen 26, which can effectively avoid the harm of dust to the health of workers and the impact on the working environment. After the cutting work is completed, forcefully push the buckle 242 to disengage it from the clip 243, then open the cover 241, pull the slider 251 to slide it on the inner wall of the slide groove 25, remove the filter cloth 252 for replacement and clean the inside of the dust collection box 24. The same applies during installation. After the outer surface of the slider 251 contacts the inner wall of the dust collection box 24, close the cover 241 so that the inside of the buckle 242 contacts the outer surface of the clip 243.
[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A dust-collecting handheld circular saw, comprising a cutting assembly (1) and a dust collection assembly (2), wherein the cutting assembly (1) includes a protective shell (11), a circular saw (111) is rotatably connected inside the protective shell (11), a motor (112) is fixedly connected to the back of the protective shell (11), and the front output end of the motor (112) is fixedly connected to the back of the circular saw (111), characterized in that: The protective shell (11) is fixedly connected to a baffle (12) at the bottom. The dust removal assembly (2) includes two air collection ports (21). The bottom of the air collection port (21) is fixedly connected to the top of the baffle (12). The top of the air collection port (21) is fixedly connected to an air collection pipe (22). The tops of the two air collection pipes (22) are fixedly connected to an air supply pipe (221). The back of the motor (112) is fixedly connected to a fan (23). The left side of the fan (23) is fixedly connected to an air inlet (231). The front of the air inlet (231) is fixedly connected to the back of the air supply pipe (221). The right side of the fan (23) is fixedly connected to an air outlet (232). The right side of the air outlet (232) is provided with a flexible hose (234). The right side of the flexible hose (234) is fixedly connected to a dust collection box (24). The right side of the dust collection box (24) is fixedly connected to a filter screen (26).
2. The dust-collecting handheld circular saw according to claim 1, characterized in that, A connecting cover (233) is fixedly connected to the side of the hose (234) near the air outlet (232), and the inner wall of the connecting cover (233) is threadedly connected to the outer surface of the air outlet (232).
3. A dust-collecting handheld circular saw according to claim 2, characterized in that, A handle (121) is fixedly connected to the top of the baffle (12), and the left side of the handle (121) is fixedly connected to the right side of the motor (112).
4. A dust-collecting handheld circular saw according to claim 3, characterized in that, The dust collector (24) has a cover plate (241) hinged to the top, and a buckle plate (242) is fixedly connected to the bottom of the cover plate (241). The buckle plate (242) is made of elastic material, and a buckle (243) is fixedly connected to the bottom of the dust collector (24). The outer surface of the buckle (243) is in contact with the inside of the buckle plate (242).
5. A dust-collecting handheld circular saw according to claim 4, characterized in that, The dust collector (24) has a sliding groove (25) fixedly connected to the inner wall of the top and bottom. A slider (251) is slidably connected to the inner wall of the sliding groove (25). A filter cloth (252) is fixedly connected to one side of the two sliders (251). The front and back of the sliders (251) are in contact with the inner wall of the dust collector (24) and the inner wall of the cover plate (241), respectively.
6. A dust-collecting handheld circular saw according to claim 5, characterized in that, The dust collection box (24) is equipped with four casters (27) at the bottom corners.