An electric circular saw with anti-pinch and chip removal functions

Abstract

This application provides an electric circular saw with anti-pinch and chip removal functions, including an upper protective shell, a lower protective shell, a saw blade protection structure, and a chip removal structure. The application includes a separator blade, whose extension length can be flexibly adjusted to adapt to different cutting scenarios by adjusting the position of the knob in the positioning groove and locking it with the fine thread of the threaded rod via the positioning hole. The spacing adjustment block can not only change the installation position by loosening the fastening nut to adjust the position of the positioning rod in the positioning groove, but also adapt to more sizes of wooden boards by replacing the adjustment block with one of different thicknesses. During operation, the lower protective shell is retracted into the upper protective shell, allowing the first and second chip outlets to precisely align and form a continuous chip removal channel. The chips generated during cutting enter the temporary chip storage space of the lower protective shell under the drive of the saw blade. The chips are then efficiently discharged into a collection bag through the first and second chip outlets and the chip removal pipe, preventing chip accumulation from interfering with the saw blade's cutting accuracy and preventing chips from clogging transmission components or heat dissipation channels.

Description

Technical Field

[0001] This application relates to the field of electric circular saw technology, and in particular to an electric circular saw with anti-pinch and chip removal functions. Background Technology

[0002] In the field of wood processing, the circular saw is the core equipment for cutting wood boards and is widely used in furniture manufacturing, construction and decoration, and many other industries. Existing circular saws mainly work by driving a saw blade to rotate at high speed, which simultaneously moves the saw blade or the wood board relative to each other. The cutting action of the saw blade cuts the wood board into the required size and shape, meeting the wood board processing needs of different processing scenarios.

[0003] The existing problems are as follows: When the saw blade cuts the wood, as the saw blade advances, the wood will be gradually divided into two independent boards. Due to the internal stress of the wood itself, and the vibration generated by the cutting action between the saw blade and the wood during the cutting process, the two boards after cutting are prone to shaking. Under the combined effect of stress release and vibration, the boards that are pulled inward will come into direct contact with the saw blade and be squeezed, which can easily cause the saw blade to be clamped. Once the saw blade is clamped, it will not only cause the cutting operation to be interrupted and affect the processing efficiency, but may also cause damage to the saw blade or cause fragments to fly, which poses a great threat to the personal safety of the operator and has significant safety hazards. Furthermore, existing electric circular saws generate a large amount of wood chips during the cutting process. These chips usually accumulate in the cutting work area or inside the equipment. The accumulated chips can affect the normal cutting movement of the saw blade and interfere with the cutting accuracy. On the other hand, they may also block the transmission components or heat dissipation channels of the equipment, shortening the service life of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide an electric circular saw with anti-pinch and chip removal functions to solve the above-mentioned problems.

[0005] The technical solution of this application is implemented as follows: This application provides an electric circular saw with anti-pinch and chip removal functions, including an upper protective shell, a saw blade protection structure and a chip removal structure. A lower protective shell is rotatably installed at the bottom of the upper protective shell, and the lower protective shell can be rotated into the upper protective shell. The saw blade protection structure is detachably disposed on the left and right front end of the upper protective shell. Part of the chip removal structure is disposed on the left and right front end of the upper protective shell, and the other part is disposed at the bottom of the lower protective shell. The saw blade protection structure includes a positioning hole and a separator. The positioning hole is located on the left and right sides of the front end of the upper protective shell. A positioning groove is formed through the middle of the front end of the separator. A knob is inserted into the opening at the front end of the positioning groove. The separator can be detachably installed on the left and right sides of the front end of the upper protective shell by cooperating with the knob and the positioning hole. It also includes a spacing adjustment block, wherein a positioning rod is fixedly installed at one end of the spacing adjustment block near the separator blade, and a fastening nut is sleeved on the other end of the positioning rod away from the spacing adjustment block after passing through the positioning groove. The spacing adjustment block and the separator blade are detachably fixed by locking the fastening nut with the positioning rod.

[0006] In one embodiment, the chip removal structure includes a first chip outlet, a second chip outlet, and a chip removal pipe. The first chip outlet is opened through the bottom of the lower protective shell, the second chip outlet is opened on the left side of the front end of the upper protective shell, and the chip removal pipe is fixedly provided on the lower protective shell at the opening position of the second chip outlet. The chip removal pipe is connected to the second chip outlet.

[0007] In one embodiment, the knob includes a connector with an integrally formed auxiliary handle on the outer side of the connector, and a threaded rod coaxially fixed to one end of the connector near the separator blade. When the separator blade is fixed to the upper protective shell by the knob, the threaded rod passes through the positioning groove and locks with the positioning hole. At this time, the end face of the connector near the separator blade is tightly pressed against the front end face of the separator blade, realizing the detachable locking and fixing of the separator blade to the left and right front end of the upper protective shell.

[0008] In one embodiment, when the lower protective shell is rotated and retracted into the upper protective shell, the first chip outlet and the second chip outlet correspond to each other and connect to form a continuous chip removal channel.

[0009] In one embodiment, a guide groove is provided inside the second chip outlet. The guide groove is a spiral groove that extends along the direction of chip discharge.

[0010] In one embodiment, the positioning hole is provided with an internal thread, which is a fine thread that matches the external thread of the threaded rod. The two are engaged by the thread to press the connector against the separator blade, thereby locking and fixing the separator blade to the left and right front ends of the upper protective shell.

[0011] In one embodiment, the end of the positioning rod that passes through the positioning groove is provided with an external thread section, and the inner wall of the fastening nut is provided with an internal thread that matches the external thread section. The two achieve locking and fixing of the spacing adjustment block and the separator blade through threaded engagement.

[0012] In one embodiment, a collection bag is detachably connected to the outer periphery of the chip outlet of the chip removal pipe via an elastic clamp.

[0013] The advantages or beneficial effects of the above technical solutions include at least the following: This application discloses an electric circular saw with anti-pinch and chip removal functions, wherein the separator blade can be adjusted by adjusting the position of the knob in the positioning groove and locking it with the fine thread of the threaded rod through the positioning hole, flexibly adjusting the extension length to adapt to different cutting scenarios, and directly preventing the cut wooden boards from gathering together. The spacing adjustment block can not only change the installation position by loosening the fastening nut to adjust the position of the positioning rod in the positioning groove, but also adapt to more sizes of wooden boards by replacing the adjustment block with one of different thicknesses. This ensures that the separator blade always plays a stable role in preventing the saw blade from getting stuck, ensuring continuous operation, reducing saw blade wear, eliminating the safety threat of flying debris, and improving processing efficiency and operational safety. During operation, the lower protective shell is retracted into the upper protective shell, allowing the first and second chip outlets to precisely align and form a continuous chip removal channel. The waste chips generated during cutting are driven by the saw blade into the temporary chip storage space of the lower protective shell. The waste chips are then efficiently discharged into the collection bag through the first and second chip outlets and the chip removal pipe. This not only prevents the accumulation of waste chips from interfering with the saw blade's cutting accuracy but also prevents waste chips from clogging transmission components or heat dissipation channels, effectively extending the service life of the equipment. At the same time, it eliminates the need for a separate step of cleaning the waste chips inside the lower protective shell. Attached Figure Description

[0014] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the description thereof, serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0015] Figure 1 A schematic diagram of the overall structure of an embodiment of this application is shown; Figure 2 A schematic diagram of the saw blade protection structure and chip removal structure according to an embodiment of this application is provided; Figure 3 A schematic diagram of the installation structure of the protective shell and saw blade protection structure in an embodiment of this application is provided; Figure 4 A schematic diagram of the saw blade protection structure according to an embodiment of this application is shown; Figure 5 A schematic diagram of the chip removal structure according to an embodiment of this application is shown; Figure 6 A schematic diagram of the knob in an embodiment of this application is shown.

[0016] Reference numerals: Upper protective shell 1, Lower protective shell 2, Saw blade protection structure 3, Chip removal structure 4, Positioning hole 31, Divider blade 32, Positioning groove 33, Knob 34, Spacing adjustment block 35, Positioning rod 36, Fastening nut 37, First chip outlet 41, Second chip outlet 42, Chip removal pipe 43, Connector 341, Power handle 342, Threaded rod 343, Guide groove 421. Detailed Implementation

[0017] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0018] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this application are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0020] It should be noted that the terms "a" and "several" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0021] The names of the messages or information exchanged between multiple devices in the embodiments of this application are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0022] Reference Figures 1-3 An electric circular saw with anti-pinch and chip removal functions includes an upper protective shell 1, a saw blade protection structure 3, and a chip removal structure 4. The upper protective shell 1 serves as the core external support and protection component of the electric circular saw. On the one hand, it provides an installation base for some components of the saw blade protection structure 3 and the chip removal structure 4. On the other hand, it protects the key working components such as the saw blade inside the electric circular saw, preventing external impurities from entering or components from being exposed and causing safety risks.

[0023] The bottom of the upper protective shell 1 is rotatably mounted with a lower protective shell 2. The lower protective shell 2 can be rotated into the upper protective shell 1. The lower protective shell 2 can protect the bottom area of ​​the electric circular saw and install the corresponding components of the chip removal structure 4. At the same time, it can be rotated and stored into the upper protective shell 1 through the pivot, reducing the space occupied by the equipment when it is not in operation.

[0024] The saw blade protection structure 3 is detachably installed on the left and right sides of the front end of the upper protective shell 1. The saw blade protection structure 3 is used to prevent the cut wood boards from shaking and gathering together and damaging the saw blade during the wood cutting process, and to avoid the saw blade from jamming and being damaged.

[0025] The chip removal structure 4 is partly located on the left side of the front end of the upper protective shell 1 and partly located at the bottom of the lower protective shell 2. The chip removal structure 4 is used to quickly collect and discharge the wood chips generated during the cutting operation, so as to prevent the chips from accumulating in the cutting area and inside the equipment.

[0026] In one embodiment, reference is made to Figure 4 The saw blade protection structure 3 includes a positioning hole 31 and a separator 32. The positioning hole 31 is located on the left and right sides of the front end of the upper protective shell 1. The positioning hole 31, in cooperation with the knob 34, provides a mounting point for the separator 32, ensuring that the separator 32 can be stably and detachably mounted on the upper protective shell 1.

[0027] During the wood cutting process, the separator blade 32 prevents the two cut wood pieces from shaking and converging inward, thus avoiding the saw blade from being pinched and damaged, and avoiding the safety hazards of saw blade jamming, damage and flying fragments.

[0028] The front end of the separator 32 has a through-hole 33. The positioning groove 33 is used to fit the knob 34 to connect the separator 32 to the upper protective shell 1. It can also fit the positioning rod 36 to assemble the spacing adjustment block 35 with the separator 32.

[0029] A knob 34 is inserted into the opening at the front end of the positioning groove 33. The separator 32 is detachably installed on the left and right sides of the front end of the upper protective shell 1 through the cooperation of the knob 34 and the positioning hole 31. The knob 34 serves as a connector between the separator 32 and the upper protective shell 1. After passing through the positioning groove 33, it is locked in place with the positioning hole 31, fixing the separator 32 in the designated position of the upper protective shell 1. When disassembly is required, the fixation can be released by simply reversing the operation.

[0030] It also includes a spacing adjustment block 35. By replacing the adjustment block 35 with one of different thicknesses, the separator 32 can be adapted to different sizes of wooden boards, thus avoiding the inability to achieve the anti-pinch function due to differences in the size of the wooden boards.

[0031] A positioning rod 36 is fixed at one end of the spacing adjustment block 35 near the separator 32. As a connecting part between the spacing adjustment block 35 and the separator 32, one end is fixed to the spacing adjustment block 35 and the other end passes through the positioning groove 33. With the help of the fastening nut 37, it provides stable installation support for the spacing adjustment block 35. At the same time, the positioning rod 36 can change the position of the spacing adjustment block 35 on the separator 32 by changing the position of the rod passing through the positioning groove 33, so as to accurately adapt to the wooden boards of different sizes and specifications.

[0032] The end of the positioning rod 36 away from the spacing adjustment block 35 passes through the positioning groove 33 and is fitted with a fastening nut 37. The fastening nut 37 locks into the positioning rod 36, thereby achieving the detachable and fixed installation of the spacing adjustment block 35 and the separator blade 32. By locking with the positioning rod 36, the spacing adjustment block 35 can be firmly fixed in the adjusted position of the separator 32, preventing the spacing adjustment block 35 from shifting due to vibration during the cutting operation, and ensuring that the spacing adjustment block 35 can continuously and stably assist the separator 32 in achieving the anti-aggregation function.

[0033] In summary, the separator blade 32 can be extended to different lengths by adjusting the installation position of the knob 34 in the positioning groove 33 and locking it with the positioning hole 31, in order to adapt to the cutting needs of different wooden boards. The spacing adjustment block 35 can be adjusted by loosening the fastening nut 37 to change the position of the positioning rod 36 in the positioning groove 33, and then re-locking the fastening nut 37 to change its installation position on the separator blade 32. By replacing the spacing adjustment block 35 with one of different thicknesses, it can be further adapted to wooden boards of different sizes and specifications.

[0034] The positioning rod 36 has an external thread section at one end that passes through the positioning groove 33, and the inner wall of the fastening nut 37 has an internal thread that matches the external thread section. The two achieve locking and fixing of the spacing adjustment block 35 and the separator 32 through threaded engagement. The threaded engagement provides a stable and adjustable locking force, which can firmly fix the spacing adjustment block 35 in the preset position of the separator 32, preventing the spacing adjustment block 35 from shifting due to vibration during the cutting operation; and can also be easily released by loosening the fastening nut 37, making it easy to adjust the position of the spacing adjustment block 35 according to the size of the wooden board.

[0035] In one embodiment, reference is made to Figure 5 The chip removal structure 4 includes a first chip outlet 41, a second chip outlet 42, and a chip removal pipe 43.

[0036] The first chip outlet 41 is opened through the bottom of the lower protective shell 2. The first chip outlet 41 is used to receive wood chips generated when the saw blade cuts the wood board and guide the chips from inside the lower protective shell 2 to the chip discharge path.

[0037] The second chip outlet 42 is located on the left side of the front end of the upper protective shell 1. It is used to discharge the waste chips conveyed by the chip discharge path to the outside, so as to avoid the accumulation of waste chips inside the equipment and ensure the cleanliness of the cutting area and the inside of the lower protective shell 2.

[0038] The lower protective shell 2 is fixedly provided with a chip discharge pipe 43 at the opening position of the second chip outlet 42, and the chip discharge pipe 43 is connected to the second chip outlet 42. When the lower protective shell 2 is rotated and stored inside the upper protective shell 1, the first chip outlet 41 and the second chip outlet 42 correspond to each other and are connected to form a continuous chip discharge channel. During operation, the lower protective shell 2 will be rotated and stored inside the upper protective shell 1, and the outlet of the first chip outlet 41 will be aligned with and connected to the inlet of the second chip outlet 42, forming a continuous chip removal channel that runs through the inside of the lower protective shell 2 and the outside of the upper protective shell 1. The waste chips generated during cutting will be directly thrown into the temporary chip storage space formed by the inner wall of the lower protective shell 2 under the drive of the high-speed rotating saw blade. Then, they will be discharged into the first chip outlet 41 and then into the second chip outlet 42. The waste chips entering the second chip outlet 42 will flow directly into the chip discharge pipe 43 under the drive of gravity and the airflow of the saw blade. Finally, they will be collected in the collection bag connected to the chip discharge pipe 43, which avoids the waste chips from scattering and polluting the environment, and also eliminates the need for separate cleaning of the waste chips inside the lower protective shell 2.

[0039] The chip discharge pipe 43 has a collection bag detachably connected to the outer circumference of the chip outlet via an elastic clamp. This detachable design allows users to quickly remove the collection bag for easy emptying of waste chips or replacement of the collection bag, reducing the complexity of equipment maintenance.

[0040] In one embodiment, reference is made to Figure 6 The knob 34 includes a connector 341. The connector 341 is used to install the power handle 342 and the threaded rod 343 to form a complete knob assembly. On the other hand, when the threaded rod 343 is engaged and locked with the positioning hole 31, its end face near the separator 32 can directly press the separator 32, transmitting the locking force of the knob to the separator 32 and ensuring that the separator 32 is stably fixed on the upper protective shell 1.

[0041] The connector 341 has an integrally formed auxiliary handle 342 on the outside. The auxiliary handle 342 is used to increase the lever arm when the operator rotates the knob 34, making the rotation operation more effortless.

[0042] A threaded rod 343 is coaxially fixed to one end of the connector 341 near the separator 32. The threaded rod 343 engages with the internal thread in the positioning hole 31 to convert the rotational motion into an axial locking force, thereby pressing and fixing the separator 32 with the connector 341. When rotating in the opposite direction, the threaded rod 343 disengages from the positioning hole 31, releasing the separator 32 from fixation, thus enabling the separator 32 to be detachably installed.

[0043] When the separator 32 is fixed to the upper protective shell 1 by the knob 34, the threaded rod 343 passes through the positioning groove 33 and locks with the positioning hole 31. At this time, the end face of the connector 341 close to the separator 32 is tightly pressed against the front end face of the separator 32, so as to realize the detachable locking and fixing of the separator 32 to the left and right front end of the upper protective shell 1.

[0044] The positioning hole 31 is provided with an internal thread, which is a fine thread that matches the external thread of the threaded rod 343. The two are engaged by the thread to make the connector 341 press the separator 32, thereby locking and fixing the separator 32 to the left and right front end of the upper protective shell 1. By utilizing the characteristics of fine-pitch threads, such as small pitch and large meshing surface, locking stability can be enhanced to resist vibration and loosening, and clamping force can be increased to ensure that the separator 32 is firmly fixed.

[0045] In one embodiment, reference is made to Figure 5 The second chip outlet 42 is provided with a guide groove 421 inside. The guide groove 421 is a spiral groove that extends along the direction of chip discharge. The guide groove 421 of the spiral path can guide the orderly flow of waste chips, which can not only prevent waste chips from accumulating and clogging in the chip outlet, but also accelerate the discharge of waste chips by utilizing the guiding effect of the spiral structure. At the same time, it can separate and carry away fine wood chips, thereby improving the chip discharge efficiency.

[0046] Working principle: The separator blade 32 is installed in the positioning groove 33 at its front end by adjusting the installation position of the knob 34. After the position is determined, the knob 34 is passed through the positioning groove 33 and locked with the positioning hole 31 of the upper protective shell 1. The fine thread of the knob 34 thread rod 343 is engaged and fixed by the positioning hole 31 and the fine thread of the positioning hole 31, so as to adjust the extension length of the separator blade 32 to adapt to different wood cutting needs. When adjusting the position of the spacing adjustment block 35, simply loosen the fastening nut 37 on its positioning rod 36, move the positioning rod 36 to the corresponding position in the positioning groove 33, and then tighten the fastening nut 37 to lock it in place through the threaded engagement. This will change the position of the spacing adjustment block 35 on the separator blade 32. At the same time, by replacing the spacing adjustment block 35 with one of different thicknesses, it can be further adapted to different sizes and specifications of wood boards, ensuring that the separator blade 32 can stably prevent the cut wood boards from gathering together to avoid damaging the saw blade. During operation, the lower protective shell 2 is rotated and stored inside the upper protective shell 1, so that the first chip outlet 41 of the lower protective shell 2 is precisely connected with the second chip outlet 42 of the upper protective shell 1. The waste chips generated by cutting are thrown into the temporary chip storage space of the lower protective shell 2 by the high-speed saw blade, enter the second chip outlet 42 through the first chip outlet 41, and then be discharged into the collection bag through the chip discharge pipe 43 connected to the second chip outlet 42. The spiral guide groove 421 inside the second chip outlet 42 can also guide the waste chips to flow in an orderly manner and avoid blockage.

[0047] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] Those skilled in the art should understand that the above embodiments are merely for illustrative purposes and are not intended to limit the scope of this application. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of this application.

Claims

1. An electric circular saw with anti-pinch and chip removal functions, comprising an upper protective shell (1), wherein a lower protective shell (2) is rotatably mounted on the bottom of the upper protective shell (1), and the lower protective shell (2) is rotatable into the upper protective shell (1); characterized in that: It also includes a saw blade protection structure (3) and a chip removal structure (4). The saw blade protection structure (3) is detachably installed on the left side of the front end of the upper protective shell (1). The chip removal structure (4) is partially installed on the left side of the front end of the upper protective shell (1) and partially installed at the bottom of the lower protective shell (2). The saw blade protection structure (3) includes a positioning hole (31) and a separator (32). The positioning hole (31) is located on the left and right sides of the front end of the upper protective shell (1). The middle of the front end of the separator (32) is provided with a positioning groove (33). A knob (34) is provided in the opening at the front end of the positioning groove (33). The separator (32) can be detachably installed on the left and right sides of the front end of the upper protective shell (1) through the cooperation of the knob (34) and the positioning hole (31). It also includes a spacing adjustment block (35), and a positioning rod (36) is fixedly provided at one end of the spacing adjustment block (35) near the separator (32). The positioning rod (36) is provided with a fastening nut (37) after passing through the positioning groove (33) at the other end away from the spacing adjustment block (35). The spacing adjustment block (35) and the separator (32) are detachably fixed by locking the fastening nut (37) and the positioning rod (36).

2. The electric circular saw with anti-pinch and chip removal functions according to claim 1, characterized in that: The chip removal structure (4) includes a first chip outlet (41), a second chip outlet (42), and a chip removal pipe (43). The first chip outlet (41) is opened through the bottom of the lower protective shell (2), and the second chip outlet (42) is opened on the left side of the front end of the upper protective shell (1). The lower protective shell (2) is fixedly provided with a chip removal pipe (43) corresponding to the opening position of the second chip outlet (42). The chip removal pipe (43) is connected to the second chip outlet (42).

3. The electric circular saw with anti-pinch and chip removal functions according to claim 1, characterized in that: The knob (34) includes a connector (341), an auxiliary handle (342) is integrally formed on the outside of the connector (341), and a threaded rod (343) is coaxially fixed to one end of the connector (341) near the separator (32). When the separator (32) is fixed to the upper protective shell (1) by the knob (34), the threaded rod (343) passes through the positioning groove (33) and locks with the positioning hole (31). At this time, the end face of the connector (341) close to the separator (32) is tightly pressed against the front end face of the separator (32), so as to realize the detachable locking and fixing of the separator (32) and the left and right front end of the upper protective shell (1).

4. The electric circular saw with anti-pinch and chip removal functions according to claim 2, characterized in that: When the lower protective shell (2) is rotated and stored inside the upper protective shell (1), the first chip outlet (41) corresponds to and connects with the second chip outlet (42) to form a continuous chip discharge channel.

5. The electric circular saw with anti-pinch and chip removal functions according to claim 4, characterized in that: The second chip outlet (42) is provided with a guide groove (421), which is a spiral groove that extends along the chip discharge direction.

6. The electric circular saw with anti-pinch and chip removal functions according to claim 3, characterized in that: The positioning hole (31) is provided with an internal thread, which is a fine thread that matches the external thread of the threaded rod (343). The two are engaged by the thread to make the connector (341) press the separator (32) together, thereby locking and fixing the separator (32) to the left and right front end of the upper protective shell (1).

7. The electric circular saw with anti-pinch and chip removal functions according to claim 1, characterized in that: The positioning rod (36) has an external thread section at one end that passes through the positioning groove (33), and the inner wall of the fastening nut (37) has an internal thread that matches the external thread section. The two are locked and fixed by threaded engagement of the spacing adjustment block (35) and the separator (32).

8. The electric circular saw with anti-pinch and chip removal functions according to claim 2, characterized in that: The outer circumference of the chip discharge pipe (43) is detachably connected to a collection bag via an elastic clamp.

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