Chain saw with safety protection structure

Abstract

The invention relates to the technical field of chain saws, and discloses a chain saw with a safety protection structure, a second rotating shaft movably penetrates through the interior of a fixed cylinder, a protection frame is fixedly connected to one end of the second rotating shaft and is located on the outer side of a fixed cover body and the outer side of a shell, and the other end of the second rotating shaft is located in the fixed cylinder and movably sleeved with a second torsional spring; the other end of the second rotating shaft is fixedly connected with a push block on the outer side of the second torsional spring, and a touch switch is mounted on the outer side of the fixed cylinder and in the shell. When the chain saw moves downwards to be close to the leg of a person, a blocking frame on a protection frame abuts against the leg of the person, the protection frame is stressed to abut against the bottom of a limiting block and drives a second rotating shaft to rotate, the chain saw is supported through the protection frame, and a saw chain on a guide plate is prevented from being close to the leg of the person; meanwhile, the second rotating shaft rotates to drive the push block to abut against and press the outer side of the touch switch, the circuit is disconnected, the driving motor stops rotating, personnel are prevented from being injured, and guarantee is provided for personnel safety.

Description

Technical Field

[0001] The present invention relates to the technical field of chain saws, in particular to a chain saw with a safety protection structure. Background Art

[0002] An electric chain saw is a commonly used power tool for woodworking. It typically uses a rotating chain saw blade for sawing. Electric chain saws are widely used and come in a variety of types. An electric chain saw typically includes a saw chain, a main body, a first handle, a second handle, and a push-button switch. The push-button switch is typically located on the first handle, with the saw chain connected to the main body. The first and second handles are both located on the main body. A worker typically lifts the main body of the electric chain saw by holding the first and second handles, then presses the push-button switch to activate the saw chain, which then allows for sawing.

[0003] When a person lifts a chainsaw and cuts from top to bottom, the resistance of the chain will suddenly disappear at the moment the chainsaw cuts the object, and the saw body will easily rush forward due to inertia. Since people usually operate in a standing posture, the forward trajectory of the chainsaw will point to the thigh position, causing injury to the person. Therefore, a chainsaw with a safety protection structure is proposed. Summary of the Invention

[0004] The object of the present invention is to provide a chain saw with a safety protection structure to solve the problem raised in the above-mentioned background art that when a person lifts the chain saw to cut from top to bottom, the resistance of the chain will suddenly disappear at the moment the chain saw cuts the object, and the saw body will easily rush forward due to inertia. Since people usually operate the chain saw in a standing position, the forward trajectory of the chain saw will point to the thigh position, thereby causing injury to the person.

[0005] To achieve the above object, the present invention provides the following technical solution: a chain saw with a safety protection structure, comprising

[0006] A housing, a cutting assembly is mounted on the housing, a protective assembly is mounted on the upper and lower sides of one end of the housing, a fixing assembly is disposed inside the protective assembly, and a driving assembly is disposed inside the housing;

[0007] The protective assembly includes a fixed cover body, a first rotating shaft and a protective frame, the fixed cover body is installed on one side of the shell, the first rotating shaft is rotatably connected to the fixed cover body, one end of the outer side of the first rotating shaft is fixedly connected to the upper cover plate, the other end of the outer side of the first rotating shaft is movably sleeved with a first torsion spring, the interior of the shell is fixedly connected to a fixed cylinder, the interior of the fixed cylinder movably penetrates a second rotating shaft, the protective frame is fixedly connected to one end of the second rotating shaft and is respectively located on the outside of the fixed cover body and the shell, the other end of the second rotating shaft is located in the interior of the fixed cylinder and movably sleeved with a second torsion spring, the other end of the second rotating shaft is located on the outside of the second torsion spring and is fixedly connected to a push block, and the outside of the fixed cylinder is located inside the shell and a touch switch is installed.

[0008] Preferably, one end of the first torsion spring is fixedly connected to the inner side of the fixed cover, and the other end of the first torsion spring is fixedly connected to the outer side of the first rotating shaft.

[0009] Preferably, one end of the second torsion spring is fixedly connected to the inner side of the fixing cylinder, and the other end of the second torsion spring is fixedly connected to the outer side of the other end of the second rotating shaft.

[0010] Preferably, the above-mentioned fixing assembly includes a guide seat, a slide and a fixing column, the guide seat is fixedly connected to the inner side of the fixed cover body, the slide passes through one end of the guide seat, the fixing column is fixedly connected to one end of the slide, and the other end of the slide is fixedly connected to the connecting block, the interior of the connecting block is connected with a threaded rod through a thread, one end of the threaded rod is rotatably connected to one end of the guide seat, and the other end of the threaded rod extends to the outside of the fixed cover body.

[0011] Preferably, the cutting assembly includes a drive shaft, a sprocket and a guide plate, the drive shaft is rotatably connected to the inside of the shell, the sprocket is fixedly sleeved on one end of the drive shaft, the guide plate is installed on one side of the shell, a saw chain is installed on the outside of the sprocket and the guide plate, a long through slot is provided on the guide plate, and a connecting hole is provided on one end of the long through slot.

[0012] Preferably, two threaded columns are installed on one side of the above-mentioned shell, and two mounting holes are opened on the fixed cover body. The two threaded columns respectively pass through the long through groove and the interior of the two mounting holes. The outer sides of the two threaded columns are connected with fixing nuts through threads, and the fixing nuts are in contact with the outer side of the fixed cover body, and the fixing columns are inserted into the interior of the connecting holes.

[0013] Preferably, the above-mentioned drive assembly includes a drive motor, a driving gear and a driven gear, the drive motor is installed on the other side of the shell, the driving gear is installed on the output shaft of the drive motor and is located inside the shell, the driven gear is fixedly sleeved on the other end of the outer side of the drive shaft, and the driven gear is meshed and connected to the outer side of the driving gear.

[0014] Preferably, a mounting seat is provided at the rear end of the handle of the housing, a lithium battery is mounted on the mounting seat, and a button switch is mounted on the handle of the housing.

[0015] Preferably, a through hole is provided on the inner side of the protective frame, a retaining frame is fixedly connected to one end of the bottom of the protective frame, and limiting blocks are provided on the other side of the shell and the outer side of the fixed cover.

[0016] Preferably, the electrical output end of the above-mentioned lithium battery is connected to the electrical input end of the button switch, the electrical output end of the button switch is connected to the electrical input end of the tact switch, and the electrical output end of the tact switch is connected to the electrical input end of the drive motor.

[0017] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0018] 1. When the chain saw moves down and approaches the legs of a person, the blocking frame on the protective frame contacts the legs of the person. The protective frame is forced to contact the bottom of the limit block and drives the second rotating shaft to rotate. The chain saw is supported by the protective frame to prevent the saw chain on the guide plate from approaching the legs of the person. At the same time, the rotation of the second rotating shaft drives the push block to contact and press the outer side of the touch switch, disconnecting the circuit and stopping the drive motor from rotating, thereby preventing people from being injured and providing protection for people's safety.

[0019] 2. The present invention drives the connecting block to move by rotating the threaded rod, and the connecting block drives the slide to move inside the guide seat. The slide drives the guide plate to move through the fixed column, thereby adjusting the position of the guide plate, thereby completing the adjustment of the tightness of the saw chain, facilitating the installation of the saw chain, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2It is a schematic diagram of the protective frame structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the fixed cover structure of the present invention;

[0024] Figure 4 Schematic diagram of the guide plate structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the fixed cylinder structure of the present invention;

[0026] Figure 6 Schematic diagram of the drive motor structure of the present invention;

[0027] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of area A in the middle.

[0028] Explanation of the accompanying reference numerals: 1. Housing; 21. Drive shaft; 22. Sprocket; 23. Guide plate; 24. Saw chain; 25. Long through groove; 26. Connecting hole; 31. Fixed cover; 32. First rotating shaft; 33. Upper cover; 34. First torsion spring; 35. Fixed cylinder; 36. Second rotating shaft; 37. Second torsion spring; 38. Push block; 39. Touch switch; 310. Protective frame; 41. Guide seat; 42. Slide plate; 43. Fixed column; 44. Connecting block; 45. Threaded rod; 46. Threaded column; 47. Mounting hole; 48. Fixing nut; 51. Drive motor; 52. Driving gear; 53. Driven gear; 6. Mounting seat; 7. Lithium battery; 8. Push button switch; 9. Limit block; 10. Through hole; 11. Stop frame. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0031] Example

[0032] In the prior art, when a person lifts a chainsaw and cuts from top to bottom, the resistance of the chain suddenly disappears at the moment the chainsaw cuts the object, and the saw body is likely to rush forward due to inertia. Since people usually operate the chain saw in a standing position, the chain saw's forward trajectory will point to the thigh position, causing injury to the person.

[0033] See also Figure 1-7 The present invention provides a technical solution: a chain saw with a safety protection structure, comprising a shell 1, a cutting assembly installed on the shell 1, and protection assemblies installed on the upper and lower sides of one end of the shell 1. The protection assembly can provide safety protection for the operator, a fixing assembly is arranged inside the protection assembly, and a driving assembly is arranged inside the shell 1.

[0034] By providing a protective assembly, personnel are prevented from being injured and their safety is guaranteed; the protective assembly includes a fixed cover body 31, a first rotating shaft 32 and a protective frame 310, the fixed cover body 31 is mounted on one side of the housing 1, the first rotating shaft 32 is rotatably connected to the fixed cover body 31, one end of the outer side of the first rotating shaft 32 is fixedly connected to an upper cover plate 33, and the other end of the outer side of the first rotating shaft 32 is movably sleeved with a first torsion spring 34. By providing the upper cover plate 33 on the outer side of the saw chain 24, it is possible to prevent the chain saw from suddenly tilting up after cutting an object when the chain saw is used from bottom to top, causing injury to the head of the person, thereby playing a protective role and reminding the person to cut the object from top to bottom, thereby improving the person's awareness of prevention;

[0035] The interior of the shell 1 is fixedly connected to a fixed cylinder 35, and a second rotating shaft 36 is movably passed through the interior of the fixed cylinder 35. The protective frame 310 is fixedly connected to one end of the second rotating shaft 36 and is respectively located on the outside of the fixed cover 31 and the shell 1. The other end of the second rotating shaft 36 is located inside the fixed cylinder 35 and is movably sleeved with a second torsion spring 37. The other end of the second rotating shaft 36 is located on the outside of the second torsion spring 37 and is fixedly connected to a push block 38. The outside of the fixed cylinder 35 is located inside the shell 1 and a light touch switch 39 is installed. A through hole 10 is opened on the inside of the protective frame 310, and the through hole 10 can prevent object debris from being released. The bottom end of the protective frame 310 is fixedly connected to a blocking frame 11, and the other side of the shell 1 and the outer side of the fixed cover 31 are provided with a limit block 9; when the chain saw moves down and approaches the person's legs, the blocking frame 11 on the protective frame 310 is pressed against the person's legs, and the protective frame 310 is forced to press against the bottom of the limit block 9 and drive the second rotating shaft 36 to rotate, and the chain saw is supported by the protective frame 310 to prevent the saw chain 24 on the guide plate 23 from approaching the person's legs. At the same time, the rotation of the second rotating shaft 36 drives the push block 38 to press and press the outer side of the touch switch 39, the circuit is disconnected, and the chain saw stops running.

[0036] One end of the first torsion spring 34 is fixedly connected to the inner side of the fixed cover body 31, and the other end of the first torsion spring 34 is fixedly connected to the outer side of the first rotating shaft 32. When the chain saw cuts from top to bottom, the upper cover 33 will resist and tilt up on the object. At this time, the first torsion spring 34 is in a power storage state. When the cutting is completed, the first torsion spring 34 can drive the upper cover 33 to return to its original position to provide protection for personnel. The first torsion spring 34 is a wearing part and needs to be replaced and maintained regularly.

[0037] One end of the second torsion spring 37 is fixedly connected to the inner side of the fixing tube 35, and the other end of the second torsion spring 37 is fixedly connected to the outer side of the other end of the second rotating shaft 36. When the protective frame 310 is subjected to force and drives the second rotating shaft 36 to rotate, the second rotating shaft 36 drives the second torsion spring 37 to rotate and store force. However, when the protective frame 310 is separated from the person's legs, the second torsion spring 37 drives the protective frame 310 to return to its original position. The second torsion spring 37 is a wearing part and needs to be replaced and maintained regularly.

[0038] In order to facilitate the adjustment of the tightness of the saw chain 24, the fixing assembly includes a guide seat 41, a slide plate 42 and a fixing column 43. The guide seat 41 is fixedly connected to the inner side of the fixed cover body 31, the slide plate 42 passes through one end of the guide seat 41, the fixing column 43 is fixedly connected to one end of the slide plate 42, and the other end of the slide plate 42 is fixedly connected to the connecting block 44. The interior of the connecting block 44 is connected with a threaded rod 45 through a thread, one end of the threaded rod 45 is rotatably connected to one end of the guide seat 41, and the other end of the threaded rod 45 extends to the outside of the fixed cover body 31; the threaded rod 45 is rotated to drive the connecting block 44 to move, and the connecting block 44 drives the slide plate 42 to move inside the guide seat 41, and the slide plate 42 drives the guide plate 23 to move through the fixing column 43, thereby adjusting the position of the guide plate 23 to facilitate the installation of the saw chain 24.

[0039] The cutting assembly includes a drive shaft 21, a sprocket 22 and a guide plate 23. The drive shaft 21 is rotatably connected to the inside of the housing 1. The sprocket 22 is fixedly sleeved on one end of the drive shaft 21. The guide plate 23 is installed on one side of the housing 1. A saw chain 24 is installed on the outside of the sprocket 22 and the guide plate 23. A long through slot 25 is provided on the guide plate 23. A connecting hole 26 is provided on one end of the long through slot 25 on the guide plate 23. The drive assembly includes a drive motor 51, a driving gear 52 and a driven gear 53. The drive motor 51 is installed on the other side of the housing 1. The driving gear 52 is installed on the output shaft of the drive motor 51 and Located inside the housing 1, the driven gear 53 is fixedly sleeved on the other end of the outer side of the drive shaft 21, and the driven gear 53 is meshed and connected to the outer side of the driving gear 52; the person holds the handle on the housing 1 with one hand and the handle of the housing 1 with the other hand, and presses the button switch 8 while holding the handle. The circuit is connected, and the lithium battery 7 supplies power to the drive motor 51. At this time, the output shaft of the drive motor 51 drives the driving gear 52 to rotate, and the driving gear 52 drives the sprocket 22 to rotate through the driven gear 53, and the sprocket 22 drives the saw chain 24 to rotate on the guide plate 23, and the chain saw can be used.

[0040] In order to facilitate the replacement of the saw chain 24, two threaded columns 46 are installed on one side of the housing 1, and two mounting holes 47 are opened on the fixed cover body 31. The two threaded columns 46 are respectively inserted into the long through groove 25 and the two mounting holes 47. The outer sides of the two threaded columns 46 are connected with fixing nuts 48 through threads. The fixing nuts 48 abut against the outer side of the fixed cover body 31, and the fixing columns 43 are inserted into the interior of the connecting holes 26. By removing the fixing nuts 48 on the two threaded columns 46 and then removing the fixed cover body 31, the saw chain 24 on the sprocket 22 and the guide bar 23 can be replaced. The operation is simple and quick. During installation, the saw chain 24 is installed on the sprocket 22 and the guide bar 23, and then the fixed cover body 31 is installed on the outer sides of the two threaded columns 46 through the mounting holes 47. At the same time, the fixing columns 43 are inserted into the interior of the connecting holes 26.

[0041] A mounting base 6 is provided at the rear end of the handle of the shell 1, and a lithium battery 7 is installed on the mounting base 6. A button switch 8 is installed on the handle of the shell 1. The electrical output end of the lithium battery 7 is connected to the electrical input end of the button switch 8, and the electrical output end of the button switch 8 is connected to the electrical input end of the touch switch 39. The electrical output end of the touch switch 39 is connected to the electrical input end of the drive motor 51. The touch switch 39 is a normally open switch, which is disconnected when pressed. The button switch 8 is a normally closed switch, which is connected when pressed. The button switch 8 and the touch switch 39 are installed in series.

[0042] The working principle or structural principle is that when using the chain saw, a person holds the handle on the housing 1 with one hand and the handle of the housing 1 with the other hand, and presses the button switch 8 while holding the handle. The circuit is connected, and the lithium battery 7 supplies power to the drive motor 51. At this time, the output shaft of the drive motor 51 drives the driving gear 52 to rotate, and the driving gear 52 drives the sprocket 22 to rotate through the driven gear 53. The sprocket 22 drives the saw chain 24 to rotate on the guide plate 23, and the chain saw can be used.

[0043] By providing an upper cover plate 33 on the outer side of the saw chain 24, it can prevent the chain saw from suddenly tilting up and causing injury to the head of the person after cutting the object when the chain saw is used from bottom to top, which can play a protective role and at the same time remind the person to cut the object from top to bottom, thereby improving the person's awareness of prevention; at the same time, when the person cuts the object from top to bottom, when the chain saw moves down and approaches the person's legs, the blocking frame 11 on the protective frame 310 abuts against the person's legs. At this time, the protective frame 310 is driven by the force to drive the second rotating shaft 36 to rotate, so that the top of the protective frame 310 abuts against the bottom of the limit block 9, thereby supporting the chain saw through the protective frame 310, blocking the saw chain 24 on the guide plate 23 from approaching the person's legs, and at the same time, the rotation of the second rotating shaft 36 drives the push block 38 to abut and press the outer side of the touch switch 39, disconnecting the circuit and stopping the drive motor 51 from rotating, preventing the person from being injured and providing protection for the safety of the person. At this time, release the button switch 8 and take the chain saw away.

[0044] When the saw chain 24 needs to be replaced, the fixing nuts 48 on the two threaded posts 46 are removed, and then the fixing cover 31 is removed, and the saw chain 24 on the sprocket 22 and the guide bar 23 can be replaced. The operation is simple and quick. During installation, the saw chain 24 is installed on the sprocket 22 and the guide bar 23, and then the fixing cover 31 is installed on the outside of the two threaded posts 46 through the mounting holes 47. At the same time, the fixing posts 43 are inserted into the interior of the connecting holes 26, and the fixing nuts 48 are installed on the outside of the two threaded posts 46. At this time, the guide bar 23 is not fixed. By rotating the threaded rod 45 forward, the threaded rod 45 drives the slide plate 42 to move inside the guide seat 41 through the connecting block 44, thereby driving the guide bar 23 to move, thereby adjusting the position of the guide bar 23, so that the guide bar 23 can adjust the tightness of the saw chain 24, so as to facilitate the installation of the saw chain 24, saving time and effort. After the adjustment is completed, the fixing nut 48 is tightened to fix the guide bar 23.

[0045] Those skilled in the art will appreciate that various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be made, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be made, without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

Claims

1. A chain saw with a safety protection structure, characterized in that: include A housing (1), a cutting assembly being mounted on the housing (1), a protective assembly being mounted on upper and lower sides of one end of the housing (1), a fixing assembly being disposed inside the protective assembly, and a driving assembly being disposed inside the housing (1); The protective assembly includes a fixed cover (31), a first rotating shaft (32) and a protective frame (310), wherein the fixed cover (31) is mounted on one side of the housing (1), the first rotating shaft (32) is rotatably connected to the fixed cover (31), an outer end of the first rotating shaft (32) is fixedly connected to an upper cover plate (33), and the outer other end of the first rotating shaft (32) is movably sleeved with a first torsion spring (34), and a fixed cylinder (35) is fixedly connected to the interior of the housing (1), and the interior of the fixed cylinder (35) is fixedly connected to the upper cover plate (33). A second rotating shaft (36) is movably passed through, the protective frame (310) is fixedly connected to one end of the second rotating shaft (36) and is respectively located on the outside of the fixed cover (31) and the shell (1), the other end of the second rotating shaft (36) is located inside the fixed cylinder (35) and is movably sleeved with a second torsion spring (37), the other end of the second rotating shaft (36) is located outside the second torsion spring (37) and is fixedly connected to a push block (38), and the outside of the fixed cylinder (35) is located inside the shell (1) and is equipped with a light touch switch (39).

2. The chain saw with a safety protection structure according to claim 1, characterized in that: One end of the first torsion spring (34) is fixedly connected to the inner side of the fixed cover (31), and the other end of the first torsion spring (34) is fixedly connected to the outer side of the first rotating shaft (32).

3. The chain saw with a safety protection structure according to claim 1, characterized in that: One end of the second torsion spring (37) is fixedly connected to the inner side of the fixed cylinder (35), and the other end of the second torsion spring (37) is fixedly connected to the outer side of the other end of the second rotating shaft (36).

4. The chain saw with a safety protection structure according to claim 1, characterized in that: The fixing assembly comprises a guide seat (41), a slide plate (42) and a fixing column (43), wherein the guide seat (41) is fixedly connected to the inner side of the fixing cover body (31), the slide plate (42) passes through one end of the guide seat (41), the fixing column (43) is fixedly connected to one end of the slide plate (42), and the other end of the slide plate (42) is fixedly connected to a connecting block (44), and a threaded rod (45) is connected to the interior of the connecting block (44) by a thread, and one end of the threaded rod (45) is rotatably connected to one end of the guide seat (41), and the other end of the threaded rod (45) extends to the outer side of the fixing cover body (31).

5. The chain saw with a safety protection structure according to claim 4, characterized in that: The cutting assembly comprises a drive shaft (21), a sprocket (22) and a guide plate (23); the drive shaft (21) is rotatably connected to the interior of the housing (1); the sprocket (22) is fixedly sleeved on one end of the drive shaft (21); the guide plate (23) is mounted on one side of the housing (1); a saw chain (24) is mounted on the outer sides of the sprocket (22) and the guide plate (23); a long through slot (25) is provided on the guide plate (23); and a connecting hole (26) is provided on one end of the guide plate (23) located at the long through slot (25).

6. The chain saw with a safety protection structure according to claim 5, characterized in that: Two threaded columns (46) are installed on one side of the housing (1), and two mounting holes (47) are opened on the fixed cover (31). The two threaded columns (46) respectively pass through the long through groove (25) and the interior of the two mounting holes (47). The outer sides of the two threaded columns (46) are connected with fixing nuts (48) through threads. The fixing nuts (48) abut against the outer side of the fixed cover (31), and the fixing columns (43) are inserted into the interior of the connecting holes (26).

7. The chain saw with a safety protection structure according to claim 5, characterized in that: The driving assembly comprises a driving motor (51), a driving gear (52) and a driven gear (53); the driving motor (51) is mounted on the other side of the housing (1); the driving gear (52) is mounted on the output shaft of the driving motor (51) and is located inside the housing (1); the driven gear (53) is fixedly sleeved on the other end of the outer side of the driving shaft (21); and the driven gear (53) is meshedly connected to the outer side of the driving gear (52).

8. The chain saw with a safety protection structure according to claim 7, characterized in that: A mounting seat (6) is provided at the rear end of the handle of the housing (1), a lithium battery (7) is mounted on the mounting seat (6), and a button switch (8) is mounted on the handle of the housing (1).

9. The chain saw with a safety protection structure according to claim 1, characterized in that: A through hole (10) is provided on the inner side of the protective frame (310), a retaining frame (11) is fixedly connected to one end of the bottom of the protective frame (310), and a limiting block (9) is provided on the other side of the shell (1) and the outer side of the fixed cover (31).

10. The chain saw with a safety protection structure according to claim 8, characterized in that: The electrical output end of the lithium battery (7) is connected to the electrical input end of the button switch (8), the electrical output end of the button switch (8) is connected to the electrical input end of the touch switch (39), and the electrical output end of the touch switch (39) is connected to the electrical input end of the drive motor (51).

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