Safety interlocking electric saw

Abstract

The safety interlocking electric saw comprises a saw body, a switch piece, a saw locking assembly, a safety lock assembly, a first linkage mechanism and a second linkage mechanism, the saw body comprises a machine base, a driving device and a saw blade, and the saw locking assembly comprises a saw locking switch, a first transmission assembly and a first locking piece; the saw locking switch can move to a first locking position and a first unlocking position, the saw locking switch can drive the first locking piece to be matched with the driving device in a limiting mode at the first locking position, the safety lock assembly comprises a safety lock switch, the safety lock switch can move to a second locking position and a second unlocking position, and the safety lock switch can drive the first locking piece to be matched with the driving device in a limiting mode at the second locking position. The safety lock switch can limit movement of the switch piece, when the safety lock switch is at the second unlocking position, the first interlocking mechanism can lock the saw locking switch at the first unlocking position, and when the safety lock switch is at the first locking position, the second interlocking mechanism can lock the safety lock switch at the second locking position and interlock the safety lock switch and the saw locking switch, so that overload of the driving device can be prevented. And the safety is improved.

Description

Technical Field

[0001] This invention relates to the field of chainsaw technology, and in particular to a safety interlocking chainsaw. Background Technology

[0002] Currently, most chainsaws on the market are equipped with a locking mechanism that facilitates the installation and removal of the saw blade. This mechanism restricts the rotation of the shaft connected to the saw blade during blade replacement, allowing users to safely and quickly disassemble and install the blade. Additionally, to enhance safety, chainsaws typically have a safety switch. When this switch is not activated, it restricts the operation of the start button, effectively preventing accidental start-up and reducing the risk of misoperation. However, certain safety hazards still exist in existing technology. If the user simultaneously activates the safety switch and starts the chainsaw while the locking mechanism is in the open position, the motor may stall due to abnormal load. This situation not only affects the normal operation of the chainsaw but may also cause equipment overload, motor burnout, and other malfunctions, thereby shortening the chainsaw's lifespan and even posing safety risks. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a safety interlocking chainsaw that can solve the problem of equipment overload caused by misoperation.

[0004] According to a first aspect of the present invention, a safety interlocked chainsaw includes: a saw body, a switch, a locking saw assembly, a safety lock assembly, a first linkage mechanism, and a second linkage mechanism. The saw body includes a base, a drive device, and a saw blade. The drive device is disposed on the base, and the saw blade is detachably mounted on the output shaft of the drive device. The switch is movably connected to the base and is used to control the drive device. The locking saw assembly includes a locking saw switch, a first transmission assembly, and a first locking member. The locking saw switch is movably connected to the base, and the first locking member is drivenly connected to the locking saw switch through the first transmission assembly. The locking saw switch is movable to a first locked position and a first unlocked position. In the first locked position, the locking saw switch can drive the first locking member to engage with the drive device to limit the rotation of the output shaft. In the first unlocked position... When the first locking member is disengaged from the driving device, the safety lock assembly includes a safety lock switch, which is movably connected to the base and can move to a second locked position and a second unlocked position. In the second locked position, the safety lock switch abuts against the switch member to restrict its movement. In the second unlocked position, the switch member can move. The first interlocking mechanism is located on the lock saw switch and the safety lock assembly. When the safety lock switch is in the second unlocked position, the first interlocking mechanism can lock the lock saw switch in the first unlocked position. The second interlocking mechanism is located on the base and is drively connected to the lock saw assembly and the safety lock switch. When the lock saw switch moves to the first locked position, the second interlocking mechanism can lock the safety lock switch in the second locked position.

[0005] According to an embodiment of the present invention, a safety interlocked chainsaw has at least the following beneficial effects: Through the first interlocking mechanism, when the safety lock switch is opened to the second unlocking position, the saw lock switch is locked to the first unlocking position. At this time, the switch can be opened, and the saw lock switch remains unlocked, allowing the chainsaw to operate normally. Through the second interlocking mechanism, when the saw lock switch is moved to the first locking position, the output shaft of the drive device can be locked to facilitate saw blade disassembly. At this time, the safety lock switch cannot be opened to the second unlocking position; it can only remain in the second locking position. Therefore, the switch cannot be opened, ensuring normal saw blade disassembly. This structure prevents overload of the drive device and improves safety during use.

[0006] According to some embodiments of the present invention, a fixed base is further included, and the saw body is rotatably connected to the fixed base. The saw body can rotate to a working position and a storage position. The safety lock assembly further includes a second transmission assembly and a second locking member. The second locking member is operatively connected to the safety lock switch through the second transmission assembly. When the saw body is in the storage position and the safety lock switch is moved to the second locking position, it can drive the second locking member to connect with the fixed base to restrict the rotation of the saw body. When the safety lock switch is moved to the second unlocking position, the saw body can rotate to the working position.

[0007] According to some embodiments of the present invention, the safety lock switch is slidably connected to the base, the safety lock switch is provided with a guide groove, the second transmission assembly includes a transmission rod, the transmission rod includes a first transmission part, a rotating shaft and a second transmission part connected in sequence, the rotating shaft is rotatably connected to the base, when the safety lock switch slides, the guide groove can drive the first transmission part to swing around the rotating shaft, so that the second transmission part swings to drive the second locking member to lock or unlock with the fixed seat.

[0008] According to some embodiments of the present invention, the lock saw switch is rotatably connected to the base, the outer end of the rotating shaft faces the lock saw switch, the first interlocking mechanism includes a hook and a locking block, the hook is disposed on the side of the lock saw switch near the base, the hook has a locking groove, the locking block is disposed on the outer end of the rotating shaft, when the lock saw switch is rotated to the first unlocking position, the hook is located on one side of the rotating shaft, and when the safety lock switch is slid to the second unlocking position, the rotating shaft can rotate to engage the locking block into the locking groove, thereby restricting the rotation of the lock saw switch.

[0009] According to some embodiments of the present invention, the second interlocking mechanism includes a locking plate and a first elastic member. The locking plate is slidably connected to the base, and the first elastic member is disposed between the locking plate and the base. The first elastic member can drive the locking plate to slide to engage with the safety lock switch, so as to lock the safety lock switch in the second locking position. The locking plate is provided with a transmission hole. When the lock saw switch is rotated to the first unlocking position, the hook is inserted into the transmission hole and can drive the locking plate to compress the first elastic member, so as to disengage the locking plate from the safety lock switch.

[0010] According to some embodiments of the present invention, the hook has a guide ramp that can abut against the side wall of the transmission hole away from the safety lock switch, and the guide ramp can guide the locking piece to slide in a direction away from the safety lock switch.

[0011] According to some embodiments of the present invention, the rotating shaft is located within the transmission hole.

[0012] According to some embodiments of the present invention, the locking piece includes a first piece portion, a second piece portion, and a third piece portion connected in sequence. The first piece portion is parallel to the third piece portion, and the second piece portion is perpendicular to the first piece portion. The transmission hole is provided in the first piece portion. The outer end of the first piece portion can engage with the safety lock switch. An abutment piece is provided on the inner wall of the transmission hole on the side away from the safety lock switch. The abutment piece is perpendicular to the first piece portion. The guide slope can abut against the abutment piece. The first elastic member abuts against the side of the abutment piece away from the safety lock switch. The second piece portion is provided with a clearance hole for avoiding the passage of the first elastic member.

[0013] According to some embodiments of the present invention, the base includes a main body and a gripping part. The main body is provided with the driving device and the saw blade, and the gripping part is provided with the safety lock switch, the saw lock switch and the switching element.

[0014] According to some embodiments of the present invention, the safety lock switch is located on the side of the grip portion away from the main body portion, the switch member is provided on the side of the grip portion close to the main body portion, and the lock saw switch is located on the side of the safety lock switch.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 These are schematic diagrams of some embodiments of the present invention when the saw body is in the storage position; Figure 2 This is a schematic diagram of some embodiments of the saw body in the working position in this invention; Figure 3 These are exploded structural diagrams of some embodiments of the present invention; Figure 4 This is an internal structural diagram showing the safety lock switch in the second locked position and the lock saw switch in the first unlocked position. Figure 5 This is an internal structural diagram of the safety lock switch in the second unlocked position according to the present invention; Figure 6 This is an internal structural diagram of the locking saw switch in the first locking position in this invention; Figure 7 for Figure 6A schematic diagram of the other direction; Figure 8 This is an exploded view of the structure of some embodiments of the invention; Figure 9 This is a schematic diagram of the first interlocking mechanism and the second interlocking mechanism.

[0017] Figure label: Saw body 100, base 110, main body 111, grip 112, drive device 120, saw blade 130; Switch component 200; Locking switch 310, first transmission assembly 320, first locking element 330; Safety lock switch 410, guide groove 411, transmission rod 420, first transmission part 421, rotating shaft 422, second transmission part 423, second locking member 430; First interlocking mechanism 500, hook 510, slot 511, guide slope 512, block 520; The second interlocking mechanism 600, locking piece 610, transmission hole 611, first piece 612, abutting piece 6121, second piece 613, clearance hole 6131, third piece 614, and first elastic element 620. Fixed base 700. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Reference Figures 1 to 9According to a first aspect of the present invention, a safety interlocked chainsaw includes a saw body 100, a switch 200, a locking saw assembly, a safety lock assembly, a first linkage mechanism, and a second linkage mechanism. The saw body 100 includes a base 110, a drive device 120, and a saw blade 130. The drive device 120 is disposed on the base 110, and the saw blade 130 is detachably mounted on the output shaft of the drive device 120. The switch 200 is movably connected to the base 110 and is used to control the switching of the drive device 120. The locking saw assembly includes a locking saw switch 310, a first transmission assembly 320, and a first locking member 330. The locking saw switch 310 is movably connected to the base 110, and the first locking member 330 is drivenly connected to the locking saw switch 310 through the first transmission assembly 320. The locking saw switch 310 can move to a first locked position and a first unlocked position. In the first locked position, the locking saw switch 310 can drive the first locking member 330 to engage with the drive device 120 in a limited engagement. To restrict the rotation of the output shaft, in the first unlocked position, the first locking member 330 disengages from the limiting engagement with the drive device 120. The safety lock assembly includes a safety lock switch 410, which is movably connected to the base 110 and can move to a second locked position and a second unlocked position. In the second locked position, the safety lock switch 410 abuts against the switch member 200 to restrict the movement of the switch member 200. In the second unlocked position, the switch member 200 can move. A first interlocking mechanism 500 is provided on the lock saw switch 310 and the safety lock assembly. When the safety lock switch 410 is in the second unlocked position, the first interlocking mechanism 500 can lock the lock saw switch 310 in the first unlocked position. A second interlocking mechanism 600 is provided on the base 110 and is drively connected to the lock saw assembly and the safety lock switch 410. When the lock saw switch 310 moves to the first locked position, the second interlocking mechanism 600 can lock the safety lock switch 410 in the second locked position. The first interlocking mechanism 500 allows the safety lock switch 410 to be opened to the second unlocked position, locking the saw switch 310 to the first unlocked position. In this position, the switch 200 can be opened, and the saw switch 310 remains unlocked, allowing the chainsaw to operate normally. Conversely, the second interlocking mechanism 600 prevents the safety lock switch 410 from opening to the second unlocked position when the saw switch 310 is opened to the first locked position; it remains in the second locked position. In this position, the switch 200 cannot be opened, ensuring the saw assembly can properly lock the shaft and disassemble the saw blade 130. This structure prevents overload of the drive unit 120 and improves safety during use.

[0022] Reference Figures 1 to 3In some embodiments of the present invention, a fixed base 700 is further included. The saw body 100 is rotatably connected to the fixed base 700. The saw body 100 can rotate to a working position and a storage position. The safety lock assembly also includes a second transmission assembly and a second locking member 430. The second locking member 430 is connected to the safety lock switch 410 via the second transmission assembly. When the saw body 100 is in the storage position, and the safety lock switch 410 moves to the second locking position, it can drive the second locking member 430 to connect with the fixed base 700 to restrict the rotation of the saw body 100. When the safety lock switch 410 moves to the second unlocking position, the saw body 100 can rotate to the working position. Specifically, the fixed base 700 can be a slide that cooperates with a track. The saw body 100 and the fixed base 700 can be pivotally connected. The saw body 100 can rotate downward to the working position, at which time the saw blade 130 can extend downward from the fixed base 700. The saw body 100 can also rotate upward to the storage position, at which time the saw blade 130 can be retracted into the fixed base 700. When the safety lock switch 410 is activated, it can be driven by the second transmission assembly to activate the second locking member 430. The specific transmission structure is not described in detail here. Before use, the saw body 100 is in the storage position. At this time, the safety lock switch 410 is in the second locked position, and the second locking member 430 is limitedly connected to the fixed base 700. The saw body 100 cannot rotate relative to the fixed base 700, which can keep the saw blade 130 within the fixed base 700. At the same time, the safety lock switch 410 limits the switch member 200, and the switch member 200 cannot start the drive device 120, so as to ensure that the saw body 100 is in a safe state. At this point, the saw blade 130 can be disassembled and reassembled. The saw lock switch 310 can be opened to the first locking position. At this point, the output shaft of the drive device 120 connected to the saw blade 130 can be locked, making it easy to unscrew the nut locking the saw blade 130. At this point, the second interlocking mechanism 600 can lock the safety lock switch 410 to the second locking position, thereby locking the switch 200. The user cannot operate the switch 200 to start the electric saw, which can prevent damage to the motor when disassembling and reassembling the saw blade 130, and can also prevent the electric saw from starting unexpectedly when disassembling and reassembling the saw blade 130. In normal use, the safety lock switch 410 needs to be operated to the second unlocking position. At this point, the second transmission component can drive the second locking member 430 to disengage from the fixed seat 700, the saw body 100 can be flipped downwards to the working position, and the switch 200 can be opened, allowing the saw body 100 to work normally. Furthermore, the first interlocking mechanism 500 can cooperate with the locking saw switch 310 to lock the locking saw switch 310 in the first unlocked position. The user cannot open the locking saw switch 310 to the first locked position, which can prevent the drive device 120 from being locked by the first locking member 330 during operation, thus avoiding overload damage to the equipment.

[0023] Reference Figures 4 to 5In some embodiments of the present invention, the safety lock switch 410 is slidably connected to the base 110. The safety lock switch 410 is provided with a guide groove 411. The second transmission assembly includes a transmission rod 420. The transmission rod 420 includes a first transmission part 421, a rotating shaft 422 and a second transmission part 423 connected in sequence. The rotating shaft 422 is rotatably connected to the base 110. When the safety lock switch 410 slides, the guide groove 411 can drive the first transmission part 421 to swing around the rotating shaft 422, so that the second transmission part 423 swings to drive the second locking member 430 to lock or unlock with the fixed seat 700. Specifically, the safety lock switch 410 can be a sliding switch, capable of sliding between a second locked position and a second unlocked position. The safety lock switch 410 has a guide groove 411 on its inner side near the machine base 110. The guide groove 411 can be inclined, with the inclination direction being towards the direction away from the fixed base 700 along the direction from the second locked position to the second unlocked position. The first transmission part 421 can be inserted into the guide groove 411 and can swing around the rotating shaft 422 under the drive of the guide groove 411, thereby driving the second transmission part 423 to swing. The second locking member 430 can be provided with a locking post, and the second transmission part 423 can abut against the locking post to drive the locking post to slide towards or away from the fixed base 700. The fixed base 700 can have a hole for engaging the locking post. When the locking post is inserted into the hole, it can restrict the rotation of the saw body 100. The transmission structure is compact, reducing the internal space of the machine base 110.

[0024] Reference Figures 4 to 7In some embodiments of the present invention, the locking saw switch 310 is rotatably connected to the base 110, and the outer end of the rotating shaft 422 faces the locking saw switch 310. The first interlocking mechanism 500 includes a hook 510 and a block 520. The hook 510 is located on the side of the locking saw switch 310 near the base 110 and has a slot 511. The block 520 is located on the outer end of the rotating shaft 422. When the locking saw switch 310 is rotated to the first unlocking position, the hook 510 is located on the side of the rotating shaft 422. When the safety lock switch 410 is slid to the second unlocking position, the rotating shaft 422 can rotate to engage the block 520 into the slot 511 to restrict the rotation of the locking saw switch 310. Specifically, the locking saw switch 310 is rotatably connected to the base 110. The first transmission component 320 can be configured as a linkage slider mechanism, and the first locking member 330 can be provided with a locking hole that mates with the output shaft. When the locking saw switch 310 is rotatably connected, it can drive the linkage slider mechanism to slide and drive the first locking member 330 to slide. In the first locked position, the locking hole can engage with the output shaft and restrict the rotation of the output shaft. In the first unlocked position, the locking hole can disengage from the output shaft. The first linkage mechanism is configured as a hook 510 and a block 520, which are small in size and do not occupy the internal space of the base 110. With the chainsaw initially in its stored position, the locking switch 310 is in the first unlocked position, and the safety lock switch 410 is in the second locked position. At this time, the locking switch 310 can be attached to the base 110, the hook 510 can be located on one side of the rotating shaft 422, and the locking block 520 is located on the rotating shaft 422. At this time, the locking block 520 and the hook 510 do not interfere with each other, and the locking switch 310 can be freely rotated to facilitate the removal of the saw blade 130. When the safety lock switch 410 slides to the second unlocked position, the rotating shaft 422 rotates and drives the locking block 520 to engage in the slot 511 of the hook 510, thereby interlocking the locking switch 310. The interlocking effect can be cleverly achieved by utilizing the rotation angle of the rotating shaft 422. The structure is simple and occupies little space.

[0025] Reference Figure 7 and Figure 9In some embodiments of the present invention, the second interlocking mechanism 600 includes a locking piece 610 and a first elastic member 620. The locking piece 610 is slidably connected to the base 110, and the first elastic member 620 is disposed between the locking piece 610 and the base 110. The first elastic member 620 can drive the locking piece 610 to slide and engage with the safety lock switch 410 to lock the safety lock switch 410 in a second locking position. The locking piece 610 is provided with a transmission hole 611. When the lock saw switch 310 is rotated to the first unlocking position, the hook 510 is inserted into the transmission hole 611 and can drive the locking piece 610 to compress the first elastic member 620, so that the locking piece 610 is disengaged from the safety lock switch 410. Specifically, the base 110 may be provided with a guide groove 411 for the locking piece 610 to slide. The specific structure is not described in detail here. The safety lock switch 410 may be provided with a snap-fit ​​structure that cooperates with the locking piece 610. The first elastic element 620 can be a spring. When the saw lock switch 310 is opened to the first locked position, the hook 510 flips away from the base 110, disengaging from the transmission hole 611. The first elastic element 620 can drive the locking piece 610 to slide and engage with the locking structure of the safety lock switch 410. At this time, the safety lock switch 410 cannot slide to the second unlock position, ensuring that the electric saw will not start when the saw blade 130 is disassembled or assembled. When the saw blade 130 is disassembled or assembled, when the saw lock switch 310 flips to the first unlock position, the hook 510 can flip towards the locking piece 610 and engage with the transmission hole 611. It can also drive the locking piece 610 to slide away from the safety lock switch 410, thereby disengaging the locking piece 610 from the locking structure of the safety lock switch 410, allowing the electric saw to start running.

[0026] The above structure allows for clever use of the hook 510 for linkage, and the locking piece 610 is small in size and will not take up too much internal space in the base 110.

[0027] It is understandable that there is a locking structure between the locking saw switch 310 and the base 110. When the locking saw switch 310 is flipped to the first unlocked position, the locking structure can engage so that the locking saw switch 310 can remain in the current position.

[0028] Reference Figure 7 and Figure 9In some embodiments of the present invention, the hook 510 has a guide slope 512, which abuts against the side wall of the transmission hole 611 away from the safety lock switch 410, and guides the locking piece 610 to slide away from the safety lock switch 410. Specifically, the guide slope 512 can be configured to be inclined towards the transmission hole 611 along the protruding direction of the hook 510. During the process of the lock saw switch 310 switching to the first unlock position, the guide slope 512 can first abut against the transmission hole 611. As the hook 510 flips, the guide slope 512 can drive the locking piece 610 to slide until the hook 510 is fully inserted into the transmission hole 611. The guide slope 512 guides both the hook 510 to insert into the transmission hole 611 and the locking piece 610 to slide and unlock.

[0029] Reference Figures 4 to 7 In some embodiments of the present invention, the rotating shaft 422 is located within the transmission hole 611. The transmission hole 611 is used for transmission engagement with the hook 510, and can also avoid the rotating shaft 422 and the locking block 520, and allow the locking piece 610 to slide through the rotating shaft 422, thereby reducing the space occupied inside the base 110.

[0030] Reference Figure 9 In some embodiments of the present invention, the locking piece 610 includes a first piece portion 612, a second piece portion 613, and a third piece portion 614 connected in sequence. The first piece portion 612 and the third piece portion 614 are parallel, and the second piece portion 613 is perpendicular to the first piece portion 612. A transmission hole 611 is provided in the first piece portion 612. The outer end of the first piece portion 612 can be engaged with the safety lock switch 410. An abutment piece 6121 is provided on the inner wall of the transmission hole 611 away from the safety lock switch 410. The abutment piece 6121 is perpendicular to the first piece portion 612. A guide slope 512 can abut against the abutment piece 6121. A first elastic member 620 abuts against the side of the abutment piece 6121 away from the safety lock switch 410. The second piece portion 613 is provided with an avoidance hole 6131 for avoiding the passage of the first elastic member 620. Specifically, the locking piece 610 can be bent into a Z-shaped first piece 612, a second piece 613, and a third piece 614 to fit the internal space of the base 110. The first piece 612 can be inserted into the latching part of the safety lock switch 410 to restrict the sliding of the safety lock switch 410. When punching the transmission hole 611, the first piece 612 can retain the abutment piece 6121 and be bent so that it is perpendicular to the head of the first piece. The abutment piece 6121 can be used for the latch 510 to abut and engage, and can also be used for the first elastic member 620 to abut and position. It is conceivable that a positioning post could be provided on the abutment piece 6121, which could position the spring.

[0031] Reference Figures 1 to 8 In some embodiments of the present invention, the base 110 includes a main body 111 and a grip 112. The main body 111 is provided with a drive device 120 and a saw blade 130, and the grip 112 is provided with a safety lock switch 410, a saw lock switch 310, and a switch element 200. Specifically, the grip 112 can be configured as a handle structure, allowing the user to hold the grip 112 for cutting. The safety lock switch 410, the saw lock switch 310, and the switch element 200 can all be located on the grip 112 to facilitate operation by the user during gripping.

[0032] Reference Figures 1 to 8 In some embodiments of the present invention, the safety lock switch 410 is located on the side of the grip portion 112 away from the main body portion 111, the switch element 200 is located on the side of the grip portion 112 closer to the main body portion 111, and the lock saw switch 310 is located on the side of the safety lock switch 410. Specifically, the grip portion 112 may be located on the top of the main body portion 111. When the user grips the grip portion 112, the switch element 200 located on the side of the grip portion 112 closer to the main body portion 111 can be pressed open with the index finger. The safety lock switch 410 is located on the opposite side of the switch element 200, allowing the user to slide it with their thumb for easy operation. The lock saw switch 310 is located on the side of the safety lock switch 410. The close proximity of these switches facilitates mutual linkage and convenient operation.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," 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 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.

[0034] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A safety interlocked electric chainsaw characterized by, The application relates to a saw body (100) comprising a base (110), a driving device (120) arranged on the base (110) and a saw blade (130) detachably mounted on an output shaft of the driving device (120); a switch part (200) movably connected to the base (110), the switch part (200) being used for controlling the driving device (120) to switch on and off; a lock-saw assembly comprising a lock-saw switch (310), a first transmission assembly (320) and a first locking part (330), the lock-saw switch (310) being movably connected to the base (110), the first locking part (330) being in transmission connection with the lock-saw switch (310) through the first transmission assembly (320), the lock-saw switch (310) being movable to a first locking position and a first unlocking position, when the lock-saw switch (310) is in the first locking position, the lock-saw switch (310) can drive the first locking part (330) to limit position cooperation with the driving device (120) to limit the rotation of the output shaft, when the lock-saw switch (310) is in the first unlocking position, the first locking part (330) is out of the limit position cooperation with the driving device (120); a safety lock assembly comprising a safety lock switch (410), the safety lock switch (410) being movably connected to the base (110), and the safety lock switch (410) being movable to a second locking position and a second unlocking position, when the safety lock switch (410) is in the second locking position, the safety lock switch (410) abuts against the switch part (200) to limit the movement of the switch part (200), when the safety lock switch (410) is in the second unlocking position, the switch part (200) can move; a first interlocking mechanism (500) arranged on the lock-saw switch (310) and the safety lock assembly, when the safety lock switch (410) is in the second unlocking position, the first interlocking mechanism (500) can lock the lock-saw switch (310) in the first unlocking position; a second interlocking mechanism (600) arranged on the base (110) and in transmission connection with the lock-saw assembly and the safety lock switch (410), when the lock-saw switch (310) is moved to the first locking position, the second interlocking mechanism (600) can lock the safety lock switch (410) in the second locking position. ​ ​ ​ ​ ​ ​ 2. A safety interlocked electric chainsaw according to claim 1, wherein The safety lock assembly further comprises a second transmission assembly and a second locking member (430), the second locking member (430) is in transmission connection with the safety lock switch (410) through the second transmission assembly, when the safety lock switch (410) is moved to the second locking position, the second locking member (430) can be connected with the fixed seat (700) to limit the rotation of the saw body (100), when the safety lock switch (410) is moved to the second unlocking position, the saw body (100) can be rotated to the working position.

3. A safety interlocked electric chainsaw according to claim 2, wherein The safety lock switch (410) is slidably connected with the machine base (110), the safety lock switch (410) is provided with a guide groove (411), the second transmission assembly comprises a transmission rod (420), the transmission rod (420) comprises a first transmission part (421), a rotating shaft (422) and a second transmission part (423) connected in sequence, the rotating shaft (422) is rotatably connected with the machine base (110), when the safety lock switch (410) is slid, the guide groove (411) can drive the first transmission part (421) to swing around the rotating shaft (422) to make the second transmission part (423) swing to lock or unlock the second locking member (430) with the fixed seat (700).

4. A safety interlocked electric chainsaw according to claim 3, wherein The lock saw switch (310) is rotatably connected with the machine base (110), the outer end of the rotating shaft (422) faces the lock saw switch (310), the first interlocking mechanism (500) comprises a hook (510) and a clamping block (520), the hook (510) is arranged on the side of the lock saw switch (310) close to the machine base (110), the hook (510) is provided with a clamping groove (511), the clamping block (520) is arranged on the outer end of the rotating shaft (422), when the lock saw switch (310) is rotated to the first unlocking position, the hook (510) is located on one side of the rotating shaft (422), and when the safety lock switch (410) is slid to the second unlocking position, the rotating shaft (422) can be rotated to clamp the clamping block (520) into the clamping groove (511) to limit the rotation of the lock saw switch (310).

5. A safety interlocked electric chainsaw according to claim 4, wherein The second interlocking mechanism (600) comprises a locking piece (610) and a first elastic member (620), the locking piece (610) is slidingly connected to the machine base (110), the first elastic member (620) is arranged between the locking piece (610) and the machine base (110), the first elastic member (620) can drive the locking piece (610) to slide to be clamped with the safety lock switch (410), so as to lock the safety lock switch (410) in the second locking position, the locking piece (610) is provided with a transmission hole (611), when the lock switch (310) rotates to the first unlocking position, the clamping hook (510) is inserted into the transmission hole (611) and can drive the locking piece (610) to compress the first elastic member (620), so that the locking piece (610) is disengaged from the clamping of the safety lock switch (410).

6. A safety interlocked electric chainsaw according to claim 5, wherein The clamping hook (510) has a guide slope (512), which can abut against the side wall of the transmission hole (611) away from the safety lock switch (410), and the guide slope (512) can guide the locking piece (610) to slide away from the safety lock switch (410).

7. A safety interlocked electric chainsaw according to claim 5, wherein The rotating shaft (422) is located in the transmission hole (611).

8. A safety interlocked electric chainsaw according to claim 6, wherein The locking piece (610) comprises a first piece body (612), a second piece body (613) and a third piece body (614) connected in sequence, the first piece body (612) is parallel to the third piece body (614), the second piece body (613) is perpendicular to the first piece body (612), the transmission hole (611) is arranged in the first piece body (612), the outer end of the first piece body (612) can be clamped with the safety lock switch (410), the inner wall of the transmission hole (611) away from the safety lock switch (410) is provided with an abutting piece (6121), the abutting piece (6121) is perpendicular to the first piece body (612), the guide slope (512) can abut against the abutting piece (6121), the first elastic member (620) abuts on the side of the abutting piece (6121) away from the safety lock switch (410), and the second piece body (613) is provided with an avoiding hole (6131) for avoiding the first elastic member (620) to pass through.

9. The safety interlocked electric saw according to claim 1, wherein, The machine base (110) comprises a main body (111) and a holding part (112), the main body (111) is provided with the driving device (120) and the saw blade (130), and the holding part (112) is provided with the safety lock switch (410), the lock switch (310) and the switch member (200).

10. A safety interlocked electric chainsaw according to claim 9, characterized in that The safety lock switch (410) is located on the side of the holding part (112) away from the main body (111), the switch member (200) is arranged on the side of the holding part (112) close to the main body (111), and the lock switch (310) is located on the side of the safety lock switch (410).

Images