Fastener driving tools

Abstract

The utility model discloses a fastener driving tool, which belongs to the technical field of electric tools, and includes an energy storage component, a striking piece, and a driving component. The driving component includes a power piece, a driving wheel, and a transmission structure. The power piece is provided with an output shaft, and the driving wheel cooperates with the striking piece. The driving component is provided with a transmission structure, and the transmission structure has an engagement state and a separation state. The power shaft drives the driving wheel to rotate forward through the transmission structure in the transmission engagement state, so that the driving wheel that rotates forward drives the striking piece and the piston to move upward and return to the position; the transmission structure is in a transmission separation state during the process in which the piston drives the striking piece to move from the initial position to the striking position, so that the driving wheel that cooperates with the striking piece can be driven to reverse by the striking piece that moves downward. The rotation direction of the driving wheel can be adapted to the moving direction of the striking piece, so as to ensure the thrust stability of driving the striking piece to return to the position, and the driving wheel does not have a stuck problem, thereby improving the smoothness of the movement of the striking piece.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to a fastener driving tool. Background Art

[0002] A nail gun is a handheld nailing tool that drives nails into wood and other workpieces through a fast-moving striker. According to different driving sources, nail guns can be divided into electric nail guns, pneumatic nail guns, manual nail guns, etc. Existing pneumatic nail guns generally adopt a double-cylinder structure. After the large piston in the large cylinder moves to compress the air in the large cylinder to a certain extent, the piston in the small cylinder is released, and the compressed air in the large cylinder flows into the small cylinder through the air flow channel and pushes the small piston in the small cylinder to move rapidly. The fast-moving small piston drives the striker to move synchronously, and the fast-moving striker drives the nail into the wood and other workpieces to achieve the purpose of nailing. Existing pneumatic nail guns generally use a crank-connecting rod structure to drive the large piston in the large cylinder to move to compress the gas. Since the crank-connecting rod structure will have a large force deviation angle during the reciprocating motion, when the swing angle or eccentric angle of the connecting rod is too large, the crank-connecting rod structure will easily cause the thrust to be unstable and the overload to be large during the process of driving the large piston to compress the gas. This will cause the large piston to easily get stuck during the process of compressing the gas, which is not conducive to ensuring the working efficiency and nailing effect of the nail gun. Utility Model Content

[0003] In order to solve the shortcomings and deficiencies in the above-mentioned prior art, the utility model provides a fastener driving tool, in which the rotation direction of the driving wheel can be adapted to the moving direction of the striking piece, and the driving assembly can drive the striking piece and the piston to move upward and return through the driving wheel, thereby ensuring the thrust stability for driving the piston and the striking piece to return, and the driving wheel rotating around its own central axis does not have the problem of sticking, thereby improving the smoothness of the movement of the striking piece during the return process.

[0004] In order to achieve the above technical purpose, the utility model provides a fastener driving tool, comprising:

[0005] The energy storage assembly comprises a cylinder structure provided with an energy storage chamber and a piston arranged in the cylinder structure, wherein the energy storage chamber contains an energy storage medium, and the moving piston changes the volume of the energy storage chamber to change the pressure of the energy storage medium;

[0006] A striking member connected to the piston, the piston drives the striking member to move from the top dead center position to the bottom dead center position so that the striking member drives the fastener into the workpiece;

[0007] A driving assembly, including a power member and a driving wheel, wherein the power member drives the striking member and the piston to move upward from the bottom dead center position through the driving wheel;

[0008] The power member is provided with an output shaft, the driving wheel cooperates with the striking member, the driving assembly is provided with a transmission structure, and the transmission structure has an engaged state and a disengaged state;

[0009] The output shaft transmits power to the driving wheel through the transmission structure in the engaged state and causes the driving wheel to rotate forward, so that the driving wheel that rotates forward drives the striking member and the piston to move upward from the bottom dead center position;

[0010] The transmission structure is in a separated state when the piston drives the striking member to move from the top dead center position to the bottom dead center position. The transmission structure in the separated state interrupts the transmission of power of the output shaft to the drive wheel, so that the drive wheel matched with the striking member can be driven to reverse by the striking member moving downward.

[0011] Preferably, the drive assembly further comprises a rotating shaft, the driving wheel is arranged on the rotating shaft and the two rotate synchronously, and the transmission structure is arranged between the output shaft and the rotating shaft or between the output shaft and the driving wheel.

[0012] Preferably, the transmission structure includes a driving wheel I driven to rotate by the output shaft and a driven wheel I arranged on the rotating shaft, one of the driving wheel I and the driven wheel I is provided with a movable transmission ratchet and the other is provided with a transmission ratchet groove, the transmission ratchet is embedded in the transmission ratchet groove so that the driving wheel I and the driven wheel I are in an engaged state, and the transmission ratchet is disengaged from the transmission ratchet groove so that the driving wheel I and the driven wheel I are in a separated state.

[0013] Preferably, the transmission structure further comprises a transmission spring biasing the transmission ratchet toward the transmission ratchet groove, and the transmission spring is deformed by force when the transmission ratchet disengages from the transmission ratchet groove.

[0014] Preferably, the driving wheel I is provided with a concave cavity on the side facing the driven wheel I, the driven wheel I is accommodated in the concave cavity, the transmission ratchet groove is provided on the side wall of the concave cavity, the transmission ratchet is movably provided on the driven wheel I, and the transmission ratchet disengaged from the transmission ratchet groove abuts against the cavity wall of the concave cavity.

[0015] Preferably, the fastener driving tool further comprises a fixed positioning rod, and the transmission ratchet in contact with the positioning rod overcomes the bias of the transmission spring and disengages from the transmission ratchet groove; and / or, the output shaft is arranged concentrically with the rotating shaft.

[0016] Preferably, the transmission structure includes a driving wheel II driven to rotate by the output shaft and a driven wheel II arranged on the rotating shaft, the outer edge of the driving wheel II is provided with driving teeth and a tooth-missing portion, a plurality of driving teeth are arranged at intervals along the circumference of the driving wheel II, the tooth-missing portion is arranged between the first and last driving teeth, the driven wheel II is meshed with the driving teeth of the driving wheel II so that the transmission structure is in an engaged state, and the driving wheel II interrupts the meshing with the driven wheel II through the tooth-missing portion so that the transmission structure is in a disengaged state.

[0017] Preferably, the transmission structure comprises a driving wheel III driven to rotate by the output shaft, an intermediate wheel rotatably arranged through an intermediate shaft, an elastic member I biasing the driving wheel III toward the intermediate wheel, the intermediate wheel meshes with the driving wheel, the output shaft, the rotating shaft and the intermediate shaft are arranged in parallel, the driving wheel III is movably arranged, the driving wheel III biased by the elastic member I meshes with the intermediate wheel so that the transmission structure is in an engaged state, and the striking member moving to the top dead center position drives the driving wheel III to overcome the bias of the elastic member I and disengage from the intermediate wheel so that the transmission structure is in a disengaged state;

[0018] Alternatively, the transmission structure includes a driving wheel III driven to rotate by the output shaft, an intermediate wheel rotatably arranged through an intermediate shaft, an elastic member I biasing the driving wheel III toward the intermediate wheel, and a driven wheel III arranged on the rotating shaft, the intermediate wheel meshing with the driven wheel III, the output shaft, the rotating shaft and the intermediate shaft are arranged in parallel, the driving wheel III is movably arranged, the driving wheel III biased by the elastic member I meshes with the intermediate wheel to put the transmission structure in an engaged state, and the striking member moving to the top dead center position drives the driving wheel III to overcome the bias of the elastic member I and disengage from the intermediate wheel to put the transmission structure in a disengaged state.

[0019] Preferably, the driving wheel III meshing with the intermediate wheel is arranged concentrically with respect to the output shaft, and the driving wheel III disengaged from the intermediate wheel is arranged eccentrically with respect to the output shaft.

[0020] Preferably, the output shaft is provided with a slide groove, the driving wheel III is provided with a slider inserted into the slide groove, the elastic member I is arranged in the slide groove and abuts against the slider, and the elastic member I biases the driving wheel III toward the axis of the output shaft so that the driving wheel III meshing with the intermediate wheel is arranged concentrically relative to the output shaft.

[0021] Preferably, the intermediate wheel is arranged at the bottom of the driving wheel III, and the striking member is provided with a push-opening member for driving the driving wheel III to overcome the bias of the elastic member I and to separate upward from the intermediate wheel.

[0022] Preferably, the transmission structure comprises a driving wheel IV driven to rotate by the output shaft, a transmission member radially movable on the driving wheel IV, a clutch frame arranged between the driving wheel IV and the driving wheel, a transmission groove arranged on the driving wheel, an elastic member II biasing the transmission member toward the transmission groove, the transmission member biased by the elastic member II is embedded in the transmission groove so that the transmission structure is in an engaged state, and a convex block is arranged on the clutch frame so that the transmission member overcomes the bias of the elastic member II and disengages from the transmission groove, and the transmission member disengages from the transmission groove so that the transmission structure is in a disengaged state;

[0023] Alternatively, the transmission structure includes a driving wheel IV driven to rotate by an output shaft, a transmission member radially movable on the driving wheel IV, a driven wheel IV rotating synchronously with the driving wheel, a clutch frame arranged between the driving wheel IV and the driven wheel IV, a transmission groove arranged on the driven wheel IV, an elastic member II biasing the transmission member toward the transmission groove, the transmission member biased by the elastic member II is embedded in the transmission groove so that the transmission structure is in an engaged state, and a protrusion is provided on the clutch frame to enable the transmission member to overcome the bias of the elastic member II and disengage from the transmission groove, and the transmission member disengages from the transmission groove so that the transmission structure is in a disengaged state.

[0024] Preferably, the protrusion has a pressing surface, and the transmission member in contact with the pressing surface overcomes the bias of the elastic member II and moves in the direction of leaving the transmission groove. The transmission member leaving the protrusion is re-embedded in the transmission groove under the bias of the elastic member II.

[0025] Preferably, the transmission structure includes a driving wheel V driven to rotate by the output shaft, a driven wheel V rotating synchronously with the driving wheel, an elastic member III biasing the driving wheel V toward the driven wheel V, a shift fork cooperating with the driving wheel V, and a shift block used to drive the shift fork to slide axially, the driving wheel V biased by the elastic member III cooperates with the driven wheel V to put the transmission structure in an engaged state, and the shift block rotating with the output shaft drives the driving wheel V through the shift fork to overcome the bias of the elastic member III and disengage from the driven wheel V to put the transmission structure in a disengaged state.

[0026] Preferably, the transmission structure includes a transmission shaft transmission-connected to the output shaft, the driving wheel V and the shift block are arranged on the transmission shaft and rotate synchronously with the transmission shaft, and the driven wheel V and the driving wheel are rotatably sleeved on the output shaft.

[0027] Preferably, the shift block is provided with a shift surface, and the rotating shift block causes the shift fork to drive the driving wheel V to overcome the bias of the elastic member III and move in a direction of disengaging from the driven wheel V through the contact between the shift surface and the shift fork, and the shift fork disengaged from the shift block causes the driving wheel V to re-engage with the driving wheel V under the bias of the elastic member III.

[0028] Preferably, the transmission shaft is provided with a disc body, the shift block is provided on the side of the disc body facing away from the driving wheel V, the elastic member III is provided between the disc body and the driving wheel V, and the two ends of the elastic member III respectively abut against the disc body and the driving wheel V.

[0029] Preferably, the driving wheel V and the driven wheel V are respectively provided with engaging teeth and engaging grooves spaced along the circumferential direction on the facing end faces, the engaging teeth are embedded in the engaging grooves so that the driving wheel V and the driven wheel V are engaged, and the engaging teeth are disengaged from the engaging grooves so that the driving wheel V and the driven wheel V are disengaged; and / or, an annular groove is provided on the outer circumferential surface of the driving wheel V, and one end of the fork is provided with a fork rod embedded in the annular groove.

[0030] Preferably, the fastener driving tool further comprises a lock buckle having a locked state and an unlocked state, the lock buckle in the locked state cooperates with the striking member to lock the striking member, and the lock buckle in the unlocked state disengages from the striking member to release the striking member.

[0031] Preferably, the driving assembly includes an unlocking member that rotates with the output shaft or the driving wheel, and the unlocking member is used to drive the lock to switch from a locked state to an unlocked state so that the striking member is released by the lock.

[0032] Preferably, the outer peripheral surface of the unlocking member includes an arcuate surface and an avoidance surface provided between two ends of the arcuate surface, the center of the arcuate surface coincides with the rotation center line of the unlocking member and has a radius of R, the distance between the avoidance surface and the rotation center line of the unlocking member is less than R, the rotating unlocking member switches the lock buckle to the unlocked state and maintains it through the interference between the arcuate surface and the lock buckle, and the rotating unlocking member releases the lock buckle through the avoidance surface so that the lock buckle can return to the locked state;

[0033] Alternatively, a protrusion protruding outward is provided on the circumference of the unlocking member, and the rotating unlocking member switches the lock buckle from the locked state to the unlocked state through the interference between the protrusion and the lock buckle, and the rotating unlocking member causes the protrusion to separate from the lock buckle to release the lock buckle;

[0034] Alternatively, a protrusion is provided on the end surface of the unlocking member, and the rotating unlocking member switches the lock buckle from a locked state to an unlocked state through the interference between the protrusion and the lock buckle, and the rotating unlocking member causes the protrusion to disengage from the lock buckle to release the lock buckle.

[0035] Preferably, the fastener driving tool also includes a locking spring that biases the lock toward the striking member, and the locking spring is configured to be deformed by force when the lock is switched from a locked state to an unlocked state, and to drive the lock released by the unlocking member to return from the unlocked state to the locked state when the striking member returns to its position.

[0036] Preferably, the fastener driving tool further comprises a locking switch which is positioned so that the lock button returning to the locked state triggers the locking switch.

[0037] Preferably, the striking member has an initial position between the upper dead center position and the lower dead center position, the lock cooperates with the striking member to lock the striking member in the initial position, and the transmission structure is in an engaged state during the process of the striking member moving upward from the lower dead center position to the initial position and during the process of the striking member moving upward from the initial position to the upper dead center position.

[0038] Preferably, the power component includes a motor and a reducer, the output shaft is arranged on the reducer, and a limiting structure for keeping the output shaft rotating in one direction is provided inside the reducer.

[0039] Preferably, the fastener driving tool further comprises a positioned magnetic induction member, the striking member or the driving wheel is provided with a magnet for triggering the magnetic induction member, and the power member brakes or decelerates according to a signal that the magnetic induction member is triggered by the magnet.

[0040] Preferably, the fastener driving tool further comprises a safety switch, a push rod for triggering the safety switch and a block for limiting the push rod, wherein the block prevents the push rod from triggering the safety switch when the number of fasteners to be driven decreases to a warning number.

[0041] After adopting the above technical solution, the utility model has the following advantages:

[0042] 1. The fastener driving tool provided by the utility model has an output shaft provided on the power member of the driving assembly, and the driving wheel of the driving assembly cooperates with the striking member. The driving assembly is also provided with a transmission structure having a combined state and a separated state. When it is necessary to drive the striking member and the piston to move upward to return, the transmission structure is in an engaged state. At this time, the output shaft of the power member can be driven by the driving wheel to rotate forward through the transmission structure. The forward rotating driving wheel drives the striking member and the piston to move upward from the bottom dead point position to return by cooperating with the striking member. The upward moving piston compresses the energy storage medium in the energy storage chamber, thereby increasing the pressure of the energy storage medium. When it is necessary to drive fasteners such as nails into a workpiece, the high-pressure energy storage medium in the energy storage chamber applies force to the piston, so that the piston can drive the striking member to move from the top dead center position to the bottom dead center position. During this process, the transmission structure is in a separated state, and the power of the output shaft cannot be transmitted to the drive wheel. The drive wheel is in a free state relative to the output shaft. The striking member moving downward can drive the drive wheel to reverse, and the reversed drive wheel will not transmit torque to the output shaft, eliminating the downward obstruction caused by the drive wheel to the striking member, so that the piston can drive the striking member to move downward smoothly. The structure of the drive assembly is reasonably set, and the output shaft and the drive wheel of the drive assembly can be switched to transmission engagement or transmission disengagement in time through the transmission structure. The output shaft can maintain unidirectional rotation during the up and down movement of the striking member. The power member does not need to switch the driving direction during the working process of the tool, which is conducive to ensuring the performance stability of the power member and improving the output efficiency of the power member. Since the drive wheel can reverse relative to the output shaft when the transmission structure is in a separated state, the reversed drive wheel driven by the striking member will not hinder the striking movement of the striking member, so that the striking member can smoothly strike the fastener. The rotation direction of the driving wheel can be adapted to the moving direction of the striking piece, so that the driving assembly can smoothly drive the striking piece and the piston to move upward and return through the driving wheel, ensuring the thrust stability of the piston and the striking piece returning. The driving wheel rotating around its own central axis will not get stuck due to large eccentric loads, thereby improving the smoothness of movement of the striking piece during its return process, ensuring nailing efficiency and effect, and helping to improve the user experience.

[0043] 2. The drive assembly can be provided with a rotating shaft, and the driving wheel is provided on the rotating shaft, so that the driving wheel and the output shaft are provided separately. In this case, the transmission structure can be provided between the output shaft and the rotating shaft, or between the output shaft and the driving wheel. The position of the transmission structure is reasonably set according to the specific structure of the drive assembly, so that the output shaft can smoothly transmit power to the driving wheel through the transmission structure in an engaged state, and the output shaft can interrupt the transmission of power to the driving wheel through the transmission structure in a disengaged state.

[0044] 3. In the first structure, the transmission structure adopts a structure in which the driving wheel I and the driven wheel I cooperate. The driving wheel I is driven to rotate by the output shaft, and the driven wheel I is arranged on the rotating shaft. A transmission ratchet and a transmission ratchet groove that can be disengaged are arranged between the driving wheel I and the driven wheel I. When the transmission ratchet is embedded in the transmission ratchet groove, the driving wheel I and the driven wheel I are in an engaged state. At this time, the output shaft can transmit power to the driving wheel through the transmission structure and the rotating shaft, so that the driving wheel rotates forward and drives the striking member to move upward to return. When the transmission ratchet is disengaged from the transmission ratchet groove, the driving wheel I and the driven wheel I are in a separated state. At this time, the striking member moving from top to bottom drives the driving wheel and the rotating shaft to reverse, and the reversed rotating shaft cannot transmit the torque to the output shaft, that is, the driving wheel and the rotating shaft can reverse relative to the output shaft, and the output shaft can still maintain a forward rotation state. When the striking member moves to the lower dead center position, the output shaft drives the forward rotating driving wheel Ⅰ and the reverse rotating driven wheel Ⅰ to make the transmission ratchet and the transmission ratchet groove cooperate again, so that the transmission structure is restored to the engaged state, and the forward rotating output shaft can drive the rotating shaft and the driving wheel to rotate forward again through the transmission structure in the engaged state, so that the driving wheel drives the striking member and the piston to move upward and return.

[0045] 4. The transmission structure also includes a transmission spring that biases the transmission ratchet toward the transmission ratchet groove. When the transmission ratchet is forced to disengage from the transmission ratchet groove, the transmission spring is deformed. When the driving wheel I and the driven wheel I rotate relatively until the transmission ratchet and the transmission ratchet groove are aligned again, the transmission spring that restores the deformation pushes the transmission ratchet toward the transmission ratchet groove, so that the transmission ratchet and the transmission ratchet groove are matched again, thereby restoring the transmission structure to the engaged state, so that the output shaft can transmit power to the rotating shaft and the driving wheel through the transmission structure again.

[0046] 5. A concave cavity is set on the driving wheel I, and the driven wheel I is accommodated in the concave cavity. The transmission ratchet groove is set on the cavity wall of the concave cavity, and the transmission ratchet is movably set on the driven wheel I. The matching mode of the driving wheel I and the driven wheel I is reasonably set, so that the transmission ratchet can easily disengage from the transmission ratchet groove after being subjected to force, and the transmission ratchet can be easily embedded in the transmission ratchet groove when it is aligned with the transmission ratchet groove again, ensuring the smoothness of the transmission ratchet disengaging from and embedding in the transmission ratchet groove. When the transmission ratchet disengages from the transmission ratchet groove, the transmission ratchet abuts against the cavity wall of the concave cavity. When the transmission ratchet is aligned with the transmission ratchet groove again, the transmission ratchet that has disengaged from the side wall of the concave cavity can slide into the transmission ratchet groove, so that the transmission ratchet is matched with the transmission ratchet groove again, ensuring the smoothness of the movement of the transmission ratchet embedded in the transmission ratchet groove.

[0047] 6. The positioning rod is fixedly arranged, and the transmission ratchet can contact the positioning rod during the rotation of the transmission structure. The positioning rod is used to force the transmission ratchet to overcome the bias of the transmission spring and disengage from the transmission ratchet groove, which reasonably simplifies the structure while meeting the requirement of forcing the transmission ratchet to disengage from the transmission ratchet groove.

[0048] The output shaft and the rotating shaft are preferably arranged concentrically, and correspondingly, the driving wheel I and the driven wheel I are also arranged concentrically. The output shaft, the driving wheel I, the driven wheel I, the rotating shaft and the driving wheel rotate around the same central axis. The difficulty of transmission coordination between the output shaft and the rotating shaft can be reduced while the radial size of the driving component is reasonably controlled, thereby reasonably reducing the difficulty of the transmission structure.

[0049] 7. In the second structure, the transmission structure includes a driving wheel II driven to rotate by the output shaft and a driven wheel II arranged on the rotating shaft, and the outer edge of the driving wheel II is provided with driving teeth and a tooth-missing portion. When the driven wheel II is meshed with the driving teeth of the driving wheel II, the transmission structure is in an engaged state, and at this time, the output shaft can drive the rotating shaft and the driving wheel to rotate forward through the meshed driving wheel II and the driven wheel II. When the driving wheel II rotates to the tooth-missing portion corresponding to the driven wheel II, the driving wheel II and the driven wheel II are not meshed, and the transmission structure is in a separated state. The output shaft cannot transmit power to the driven wheel II through the transmission structure, and thus cannot drive the rotating shaft and the driving wheel to rotate forward. At this time, the driven wheel II can reverse relative to the driving wheel II, so that the driving wheel and the rotating shaft can reverse, thereby eliminating the obstruction caused by the driving wheel to the downward movement of the striking member, so that the piston can drive the striking member to move smoothly from the top dead center position to the bottom dead center position.

[0050] 8. In the third structure, the transmission structure includes a driving wheel III, an intermediate wheel, an intermediate shaft, and an elastic member I, or the transmission structure includes a driving wheel III, an intermediate wheel, an intermediate shaft, an elastic member I, and a driven wheel III, the intermediate wheel is meshed with the driving wheel or the driven wheel III, and the elastic member I biases the driving wheel III toward the intermediate wheel. When the driving wheel III biased by the elastic member I is meshed with the intermediate wheel, the transmission structure is in an engaged state, and the driving wheel III driven to rotate by the output shaft can drive the driving wheel to rotate forward through the intermediate wheel, so that the driving wheel drives the striking member to move upward and return. When the striking member moves to the top dead center position, the striking member drives the driving wheel III to overcome the bias of the elastic member I and disengage from the intermediate wheel. At this time, the transmission structure is in a separated state, and the driving wheel and the rotating shaft can rotate freely relative to the output shaft, eliminating the obstruction caused by the driving wheel to the downward movement of the striking member, so that the piston can drive the striking member to move smoothly from the top dead center position to the bottom dead center position.

[0051] 9. When the driving wheel III is meshed with the intermediate wheel, the driving wheel III biased by the elastic member I is concentrically arranged relative to the output shaft, that is, the central axes of the driving wheel III and the output shaft coincide with each other, so that the output shaft can smoothly drive the intermediate wheel to rotate through the driving wheel III, avoiding the situation where the driving wheel III and the intermediate wheel are separated or stuck. When the driving wheel III is separated from the intermediate wheel, the driving wheel III is eccentrically arranged relative to the output shaft, that is, the central axes of the driving wheel III and the output shaft do not coincide with each other, so that the output shaft cannot drive the intermediate wheel to rotate through the driving wheel III.

[0052] 10. A slide groove is provided on the output shaft, a slider is provided on the driving wheel III, the slider is inserted into the slide groove, the elastic member I is provided in the slide groove and contacts the slider, and the elastic member I biases the driving wheel III toward the axis of the output shaft, so that the driving wheel III meshing with the intermediate wheel is arranged concentrically relative to the output shaft, so that the output shaft can smoothly drive the intermediate wheel to rotate through the driving wheel III, avoiding the situation where the driving wheel III and the intermediate wheel are separated or stuck.

[0053] 11. The intermediate wheel is preferably arranged at the bottom of the driving wheel III, and the striking member is provided with a push-opening member. When the striking member moves upward to the top dead center position, the push-opening member drives the driving wheel III to overcome the bias of the elastic member I and move upward, so that the driving wheel III is separated from the intermediate wheel, thereby switching the transmission structure to a separated state. When the piston drives the striking member to move from top to bottom, the push-opening member releases the driving wheel III, and the elastic member I that restores the deformation biases the driving wheel III downward, so that the driving wheel III re-engages with the intermediate wheel, thereby smoothly restoring the transmission structure to an engaged state.

[0054] 12. In the fourth structure, the transmission structure is provided with a driving wheel IV, a transmission member, a clutch frame, and an elastic member II, or the transmission structure is provided with a driving wheel IV, a transmission member, a clutch frame, an elastic member II, and a driven wheel IV, a transmission groove matching the transmission member is provided on the driving wheel or the driven wheel IV, a convex block is provided on the clutch frame, and the elastic member II biases the transmission member toward the transmission groove. When the transmission member is embedded in the transmission groove under the bias of the elastic member II, the transmission structure is in an engaged state, and the output shaft can drive the driving wheel to rotate forward through the transmission structure, so that the driving wheel can drive the striking member to move upward to return. When the transmission member overcomes the bias of the elastic member II under the action of the convex block and disengages from the transmission groove, the transmission structure is in a disengaged state, at which time the driving wheel can reverse relative to the output shaft, eliminating the obstruction caused by the driving wheel to the downward movement of the striking member, so that the piston can drive the striking member to move smoothly from the top dead center position to the bottom dead center position.

[0055] 13. The protrusion is provided with a pressing surface. When the transmission member contacts the pressing surface, it can overcome the bias of the elastic member II and move in the direction of leaving the transmission groove, so that the transmission structure can be switched to a separated state. When the transmission member leaves the protrusion, the transmission member is re-embedded in the transmission groove under the bias of the elastic member II, so that the transmission structure can be smoothly restored to the engaged state.

[0056] 14. In the fifth structure, the transmission structure includes a driving wheel V, a driven wheel V, an elastic member III, a shift fork, and a shift block. The rotating shift block can drive the shift fork to slide axially. When the driving wheel V is in a state of cooperation with the driven wheel V under the bias of the elastic member III, the transmission structure is in an engaged state, and the output shaft can drive the driving wheel to rotate forward through the driving wheel V and the driven wheel V, and the forward rotating driving wheel can drive the striking member to move upward to return. When the shift block drives the shift fork to slide in a direction away from the driven wheel V, the shift fork drives the driving wheel V to slide synchronously to make the driving wheel V disengage from the driven wheel V, and the transmission structure is in a separated state. At this time, the driving wheel can reverse relative to the driving wheel V to eliminate the obstruction caused by the driving wheel to the downward movement of the striking member, so that the piston can drive the striking member to move smoothly from the top dead center position to the bottom dead center position.

[0057] 15. The transmission structure also includes a transmission shaft, on which the driving wheel V and the shift block are arranged and rotate synchronously with the transmission shaft, and the driven wheel V and the driving wheel are rotatably sleeved on the output shaft, that is, all components of the transmission structure are basically arranged on the same shaft, which is conducive to reasonably simplifying the installation difficulty of the transmission structure.

[0058] 16. The shift block is provided with a shifting surface. The rotating shift block, through the contact between the shifting surface and the shifting fork, causes the shifting fork to drive the driving wheel V to overcome the bias of the elastic member III and move in the direction of disengaging from the driven wheel V, so that the transmission structure can be switched to a disengaged state. When the shifting fork is separated from the shift block, the driving wheel V drives the driving wheel V to return to a state of matching with the driven wheel V under the bias of the elastic member III, so that the transmission structure can be smoothly restored to an engaged state.

[0059] 17. A disc body is arranged on the transmission shaft, a shift block is arranged on the side of the disc body facing away from the driving wheel V, and an elastic member III is arranged between the disc body and the driving wheel V. The distribution relationship between the shift block and the elastic member III is reasonably arranged so that the shift block can smoothly drive the driving wheel V to disengage from the driven wheel V through the shift fork, and the elastic member III can smoothly re-match the driving wheel V with the driven wheel V.

[0060] 18. The power transmission between the driving wheel V and the driven wheel V is achieved through the cooperation of the meshing teeth and the meshing grooves, which can ensure the stability of the transmission between the driving wheel V and the driven wheel V.

[0061] An annular groove is arranged on the outer circumference of the driving wheel V, a fork rod is arranged at one end of the shift fork, and the fork rod is embedded in the annular groove to connect the shift fork with the driving wheel V, so that the shift fork can smoothly drive the driving wheel V to overcome the bias of the elastic member III and slide smoothly in the direction of disengaging from the driven wheel V.

[0062] 19. The fastener driving tool is provided with a lock buckle, which has a locked state and an unlocked state. The lock buckle in the locked state cooperates with the striking member to lock the striking member, preventing the striking member from moving toward the bottom dead point position for striking due to accidental reasons, thereby ensuring the safety of the tool. The lock buckle in the unlocked state disengages from the lock buckle to release the striking member, so that the striking member can move toward the bottom dead point position driven by the piston to achieve the purpose of driving the fastener into the workpiece.

[0063] 20. The driving assembly is provided with an unlocking member, which rotates along with the output shaft or the driving wheel. The rotating unlocking member switches the lock from a locked state to an unlocked state, so that the lock releases the striking member first, thereby making the striking member in a state where it can move up and down, and then the striking member can move from the top dead center position to the bottom dead center position driven by the piston.

[0064] 21. In the specific solution of the first unlocking member, the outer peripheral surface of the unlocking member is provided with an arc surface and an avoidance surface, the radius of the arc surface is R, and the distance between the avoidance surface and the rotation center line of the unlocking member is less than R. When the unlocking member rotates to the arc surface corresponding to the lock buckle, the lock buckle can be forced to move from the locked state to the unlocked state and remain in the unlocked state under the interference of the arc surface. When the unlocking member rotates to the avoidance surface corresponding to the lock buckle, since the distance between the avoidance surface and the rotation center line of the unlocking member is less than R, the avoidance surface releases the lock buckle, so that the lock buckle can return from the unlocked state to the locked state.

[0065] In the second specific solution of the unlocking member, a protrusion is provided on the circumference of the unlocking member, and when the unlocking member rotates until the protrusion contacts the lock buckle, the lock buckle is forced to move from the locked state to the unlocked state. When the protrusion is separated from the lock buckle, the lock buckle is released by the unlocking member, and the released lock buckle can return from the unlocked state to the locked state.

[0066] In the third specific solution of the unlocking member, a protrusion is provided on the end surface of the unlocking member, and when the unlocking member rotates until the protrusion contacts the lock buckle, the lock buckle is forced to move from the locked state to the unlocked state. When the protrusion is disengaged from the lock buckle, the lock buckle is released by the unlocking member, and the released lock buckle can return from the unlocked state to the locked state.

[0067] 22. The locking spring biases the lock buckle toward the striking member. When the lock buckle switches from the locked state to the unlocked state, the locking spring is deformed by force. When the striking member returns to its position, the locking spring that recovers its deformation drives the lock buckle released by the unlocked member to return from the unlocked state to the locked state, so that the lock buckle re-locks the striking member. The structure that cooperates with the lock buckle is reasonably set so that the lock buckle can be switched to the locked state in time when the striking member returns to its position, so that the lock buckle can lock the striking member in time.

[0068] 23. The fastener driving tool is provided with a locking switch, and the lock buckle returning to the locked state triggers the locking switch. The control module of the tool determines whether the striking member has returned to the position according to the trigger signal of the locking switch. The control module can command the power member to brake in time according to the trigger signal of the locking switch, so that the power member can cut off the power output in time to avoid excessive return of the striking member.

[0069] 24. The power member includes a motor and a reducer. A limiting structure is provided in the reducer, and the limiting structure is used to keep the output shaft in unidirectional rotation. Since the rotation direction of the output shaft is locked, if the transmission structure is in an engaged state, the rotation directions of the drive wheel and the rotating shaft are also locked, and the drive wheel cannot rotate in the opposite direction, and the striking member cannot move toward the lower dead center position, that is, the striking member is also in a locked state, so that the striking member can be locked at any position between the upper dead center position and the lower dead center position, thereby avoiding accidental striking of the striking member. When the transmission structure is in a disengaged state, the rotation direction lock of the drive wheel and the rotating shaft is released, and the drive wheel and the rotating shaft can be reversed relative to the output shaft. At this time, the striking member can move toward the lower dead center position for nailing. The limiting structure in the reducer allows the striking member to move from the upper dead center position to the lower dead center position only when the transmission structure is in a transmission disengaged state, thereby ensuring the safety of the tool.

[0070] 25. The magnetic sensing part is positioned and arranged. A magnet is arranged on the striking part or the driving wheel. When the magnetic sensing part is triggered by the magnet, it indicates that the striking part is about to return to its original position driven by the driving wheel. The power part brakes or decelerates according to the trigger signal of the magnetic sensing part, so that the striking part can decelerate in advance when it is about to return to its original position. The deceleration time and deceleration distance of the striking part are appropriately extended so that the striking part can slowly decelerate when it is about to return to its original position, thereby ensuring that the striking part can return to its original position and reducing the impact caused by the rapid stop of the striking part when it returns to its original position, which is beneficial to improving the return stability of the striking part and the piston.

[0071] 26. When in use, the push rod against the workpiece moves toward the safety switch and triggers the safety switch, so that the striking movement of the striking piece is carried out under the premise that the safety switch is triggered, ensuring the safety of the tool. When the number of fasteners is reduced to the warning number, the block prevents the push rod from triggering the safety switch. Even if the push rod is against the workpiece, the push rod cannot trigger the safety switch and the tool cannot be started smoothly, thereby reminding the user to load the fasteners. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 This is a diagram of the entire fastener driving tool of Example 1;

[0073] Figure 2 A three-dimensional diagram of a part of the structure of the fastener driving tool in the first embodiment;

[0074] Figure 3 A three-dimensional diagram of another part of the structure of the fastener driving tool in the first embodiment;

[0075] Figure 4 It is a structural diagram of an energy storage component and a striking member in a fastener driving tool of Example 1;

[0076] Figure 5 An exploded view of a base, a support seat and a guide rail seat in a fastener driving tool in Example 1;

[0077] Figure 6 It is a cross-sectional view of a support seat, a guide rail seat and a striking member in a fastener driving tool of Example 1 along a direction perpendicular to the up-down direction;

[0078] Figure 7 A diagram showing the coordination between the striking member and the driving wheel in the fastener driving tool of the first embodiment;

[0079] Figure 8 An exploded view of a driving assembly in a fastener driving tool according to Embodiment 1;

[0080] Fig. 9 It is an axial cross-sectional view of a reducer in a fastener driving tool according to the first embodiment;

[0081] Fig.10 An exploded view of a reducer in a fastener driving tool according to Embodiment 1;

[0082] Fig.11 It is a structural diagram of a driving component part and a lock buckle in a fastener driving tool in Example 1;

[0083] Fig.12 An axial cross-sectional view of a portion of the structure of a driving assembly in a fastener driving tool in Embodiment 1;

[0084] Fig.13 A three-dimensional diagram of a transmission structure diagram in a fastener driving tool according to the first embodiment;

[0085] Fig.14 A structural diagram of a transmission ratchet in a fastener driving tool according to the first embodiment;

[0086] Fig.15 It is a structural diagram of the driving wheel I in the fastener driving tool of the first embodiment;

[0087] Fig.16 It is a structural diagram of the driven wheel I in the fastener driving tool of the first embodiment;

[0088] Fig.17 This is a structural diagram of a driving wheel, an unlocking member and a locking buckle in a fastener driving tool in Example 1;

[0089] Fig.18 A structural diagram of a lock catch, a locking spring and a locking switch in a fastener driving tool in Example 1;

[0090] Fig.19 This is a diagram showing the matching structure of the seat plate structure and the lock buckle in the fastener driving tool of the first embodiment;

[0091] Fig. 20 It is a diagram of the matching mechanism of the seat plate structure, the lock catch and the locking switch in the fastener driving tool of the first embodiment;

[0092] Fig.21 This is a schematic diagram of the connection of electrical components in a fastener driving tool in Example 1;

[0093] Fig. 22 An exploded view of a safety structure and a guide rail seat in a fastener driving tool in Example 1;

[0094] Fig.23a , Figure 23b , Fig.23c , Fig.23d , Fig.23e Schematic diagram of the transmission structure and striking member in the fastener driving tool of Example 1 in different states during the movement of the striking member;

[0095] Fig.24 An exploded view of a guide seat, a push rod, a clamp, a stopper, and a bias spring in a fastener driving tool in Example 1;

[0096] Fig.25 It is a structural diagram of the secondary planet carrier of the reducer in the fastener driving tool of the second embodiment;

[0097] Fig.26 An exploded view of a restriction structure in a fastener driving tool according to Embodiment 2;

[0098] Fig. 27 This is a diagram showing the coordination of the secondary ring gear, the secondary planet carrier and the limiting structure in the fastener driving tool of the second embodiment;

[0099] Fig.28 This is a structural diagram of a driving wheel, an unlocking member and a locking buckle in a fastener driving tool of Example 3;

[0100] Fig.29 This is a structural diagram of an unlocking member, a striking member, a locking buckle and an output shaft in a fastener driving tool according to a fourth embodiment;

[0101] Fig.30 This is a structural diagram of the transmission structure, the driving wheel and the striking member in the fastener driving tool of Example 5;

[0102] Fig.31 It is a structural diagram of the driving wheel II in the fastener driving tool of the fifth embodiment;

[0103] Fig.32 A schematic diagram of a driving assembly in a fastener driving tool according to a fifth embodiment;

[0104] Fig.33 It is a structural diagram of the transmission structure, the driving wheel and the striking member in the fastener driving tool of Example 6;

[0105] Fig.34 It is a structural diagram of a transmission head in a fastener driving tool according to a sixth embodiment;

[0106] Fig.35 It is a schematic diagram of the driving assembly in the fastener driving tool of Example 6 when the transmission structure is in a separated state;

[0107] Fig.36 It is a schematic diagram of the driving assembly in the fastener driving tool of Example 6 when the transmission structure is in an engaged state;

[0108] Fig.37 It is a structural diagram of the transmission structure, the driving wheel and the striking member in the fastener driving tool of the seventh embodiment;

[0109] Fig.38 It is a diagram showing the coordination of the transmission structure in the fastener driving tool of the seventh embodiment;

[0110] Fig.39 It is a schematic diagram of the driving assembly in the fastener driving tool of Example 7 when the transmission structure is in an engaged state;

[0111] Fig.40 It is a structural diagram of the transmission structure, the driving wheel and the striking member in the fastener driving tool of the eighth embodiment;

[0112] Fig.41 An exploded view of a transmission structure and a driving wheel in a fastener driving tool in Embodiment 8;

[0113] Fig.42It is a schematic diagram of a part of the structure of the driving assembly in the fastener driving tool of Embodiment 8 when the transmission structure is in an engaged state;

[0114] Fig.43 It is a schematic diagram of a part of the structure of the driving assembly in the fastener driving tool of the eighth embodiment when the transmission structure is in a separated state;

[0115] Fig.44 This is a structural diagram of a transmission shaft in a fastener driving tool according to Embodiment 8;

[0116] Fig.45 It is a structural diagram of a striking member and a part of a driving assembly in a fastener driving tool according to Embodiment 9;

[0117] Fig.46 This is a structural diagram of a driving wheel, a speed reducer and a lock buckle in a fastener driving tool according to Embodiment 9;

[0118] Fig.47 This is a diagram of the final transmission structure of the reducer in the fastener driving tool of Example 9.

[0119] In the figure, 100-energy storage assembly, 110-cylinder structure, 111-energy storage chamber, 112-outer cylinder sleeve, 113-inner cylinder sleeve, 114-cover plate, 115-base, 1151-outer ring, 1152-inner ring, 120-piston, 130-energy storage medium, 140-shock absorber, 141-through hole,

[0120] 200- striking piece, 210- protruding tooth, 220- groove, 230- locking groove, 240- unlocking slope,

[0121] 300-drive assembly, 310-power part, 311-motor, 3111-main shaft, 312-reducer, 3121-output shaft, 3122-housing, 3122a-main housing, 3122b-rear cover, 3123-first-stage sun gear, 3123a-power joint, 3124-first-stage planetary gear, 3125-first-stage ring gear, 3126-first-stage planetary carrier, 3126a-first-stage support shaft, 3127-second-stage sun gear, 3128-second-stage planetary gear, 3129-second-stage planetary carrier, 3129a-second-stage support shaft, 3130-second-stage ring gear, 3131-third-stage sun gear, 3132-third-stage planetary gear, 3133-third-stage planetary carrier, 3133a-third-stage support shaft, 3134-third-stage ring gear, 3135-ratchet,

[0122] 312a-final sun gear, 312b-final planetary gear, 312c-final inner gear ring, 3121c-limiting groove,

[0123] 320-rotating shaft, 330-driving wheel, 331-transmission tooth, 340-limiting structure, 341-limiting ratchet, 342-spring,

[0124] 350-transmission structure, 351A-driving wheel Ⅰ, 3511A-concave cavity, 35111-cavity wall, 352A-driven wheel Ⅰ, 3521-notch, 3522-lug, 353A-transmission ratchet, 3531-notch, 3532-positioning groove, 354A-transmission ratchet groove, 3541A-first groove wall, 3542A-second groove wall, 355A-pin, 356A-transmission spring,

[0125] 351B-driving wheel II, 3511B-driving tooth, 3512B-toothless part, 352B-driven wheel II,

[0126] 351C-driving wheel III, 3511C-slider, 3512C-top block, 352C-intermediate wheel, 353C-intermediate shaft, 354C-elastic part I, 355C-transmission head, 3551C-slide, 356C-top opening part,

[0127] 351D-driving wheel Ⅳ, 352D-transmission part, 353D-clutch frame, 354D-transmission groove, 355D-elastic part Ⅱ, 3531D-bump, 3532D-pressure surface,

[0128] 351E-driving wheel V, 352E-driven wheel V, 3521E-annular groove, 353E-elastic member III, 354E-shift fork, 3541E-column rod, 3542E-fork rod, 355E-shift block, 3551E-shift surface, 356E-transmission shaft, 3561E-disc body, 357E-connecting sleeve, 3581E-biting tooth, 3582E-biting groove,

[0129] 360-unlocking piece, 361-arc surface, 362-avoidance surface, 363-protrusion, 364-protrusion, 370-magnet,

[0130] 400-housing, 410-handle,

[0131] 500-nail feeding assembly, 510-guide rail, 520-push block, 530-pressing plate,

[0132] 610-support seat, 620-guide seat, 621-mounting hole, 631-guide groove, 632-guide rib, 640-positioning rod, 650-locking switch, 660-magnetic sensing element, 661-first seat plate, 662-second seat plate, 663-third seat plate, 664-fourth seat plate, 670-control module, 681-trigger, 682-start-stop switch, 691-push block, 692-mode selection switch,

[0133] 710-lock buckle, 711-linkage part, 712-locking part, 720-locking spring, 730-push rod,

[0134] 810-safety switch, 820-rod, 821-thick part, 830-pressing piece, 840-safety spring, 850-top frame, 860-elastic sleeve, 870-hoop, 881-stopper, 882-bias spring,

[0135] 910- inflation valve, 920- deflation valve. DETAILED DESCRIPTION

[0136] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following words indicating orientation or positional relationship such as "upper", "lower", "left", "right", "longitudinal", "lateral", "inner", "outer", "vertical", "horizontal", "top", "bottom", etc. are only based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0137] Embodiment 1

[0138] Combination Figures 1 to 24 The fastener driving tool provided in the first embodiment of the utility model comprises:

[0139] The energy storage assembly 100 includes a cylinder structure 110 having an energy storage chamber 111 and a piston 120 disposed in the cylinder structure 110. The energy storage chamber 111 contains an energy storage medium 130. The moving piston 120 changes the volume of the energy storage chamber 111 to change the pressure of the energy storage medium 130.

[0140] A striking member 200 connected to the piston 120, the piston 120 drives the striking member 200 to move from a top dead center (TDC) toward a bottom dead center (BDC) so that the striking member 200 drives the fastener into the workpiece;

[0141] The driving assembly 300 includes a power member 310 and a driving wheel 330. The power member 310 drives the striking member 200 and the piston 120 to move upward and return to their original positions through the driving wheel 330.

[0142] The power member 310 is provided with an output shaft 3121, the driving wheel 330 cooperates with the striking member 200, and the driving assembly 300 is provided with a transmission structure 350, and the transmission structure 350 has an engaged state and a disengaged state;

[0143] The output shaft 3121 transmits power to the driving wheel 330 through the transmission structure 350 in the engaged state and causes the driving wheel 330 to rotate forward, so that the driving wheel 330 that rotates forward drives the striking member 200 and the piston 120 to move upward from the bottom dead center position;

[0144] The transmission structure 350 is in a separated state when the piston 120 drives the striking member 200 to move from the top dead center position toward the bottom dead center position. The transmission structure 350 in the separated state interrupts the transmission of power from the output shaft 3121 to the driving wheel 330, so that the driving wheel 330 matched with the striking member 200 can be driven by the striking member 200 to reverse.

[0145] The specific structure of the driving assembly 300 is reasonably set, and the output shaft 3121 and the driving wheel 330 of the driving assembly 300 can be switched to transmission engagement or transmission disengagement in a timely manner through the transmission structure 350. The output shaft 3121 can maintain unidirectional rotation during the up and down movement of the striking member 200, and the power member 310 does not need to switch the driving direction during the operation of the tool, which is conducive to ensuring the performance stability of the power member 310 and improving the output efficiency of the power member 310. Since the driving wheel 330 can be reversed relative to the output shaft 3121 when the transmission structure 350 is in a disengaged state, the driving wheel 330 driven to reverse by the striking member 200 will not hinder the striking movement of the striking member 200, so that the striking member 200 can smoothly strike the fastener. The rotation direction of the driving wheel 330 can be adapted to the moving direction of the striking piece 200, so that the driving assembly 300 can drive the striking piece 200 and the piston 120 to return upward through the driving wheel 330, ensuring the thrust stability of the return of the piston 120 and the striking piece 200. The driving wheel 330 rotating around its own central axis will not get stuck due to a large eccentric load, thereby improving the smoothness of the movement of the striking piece 200 during the return process, ensuring the nailing efficiency and nailing effect, and helping to improve the user experience.

[0146] Combination Figure 1 In this embodiment, the fastener driving tool further includes a housing 400, and components such as the energy storage assembly 100, the striking member 200, and the driving assembly 300 are disposed in the housing 400. The housing 400 preferably adopts a shell assembly structure that is split left and right, and the housing 400 is formed with a handle portion 410 arranged roughly along the front-back direction, and the user can hold the entire tool through the handle portion 410.

[0147] The fastener driving tool of this embodiment can be powered by a battery pack with a voltage of 12V, 24V, 36V, 48V, 60V, etc., or can be powered by connecting a wire to the mains. When powered by a battery pack, a connection socket for installing the battery pack can be provided at the rear end of the handle 410.

[0148] In this embodiment, the direction in which the piston 120 and the striking member 200 move toward the bottom dead center position (BDC) is defined as bottom, and the direction in which the piston 120 and the striking member 200 move toward the top dead center position (TDC) is defined as top.

[0149] Combination Figure 4The energy storage assembly 100 is arranged in the front end of the casing 400. As a preferred solution of this embodiment, the cylinder structure 110 of the energy storage assembly 100 includes an inner cylinder sleeve 113 and an outer cylinder sleeve 112 arranged inside and outside. A cover plate 114 is fixed to the upper end of the outer cylinder sleeve 112, and the cover plate 114 maintains a circumferential sealing fit with the upper end of the outer cylinder sleeve 112. The cylinder structure 110 also includes a base 115 arranged at the lower end, the lower end of the outer cylinder sleeve 112 is connected to the outer ring 1151 of the base 115 and maintains a circumferential sealing fit, the lower end of the inner cylinder sleeve 113 is connected to the inner ring 1152 of the base 115 and maintains a circumferential sealing fit, the piston 120 is arranged in the inner cylinder sleeve 113 and can move up and down, the outer peripheral surface of the piston 120 and the inner wall of the inner cylinder sleeve 113 maintain a circumferential sealing fit, the rear end of the inner cylinder sleeve 113 is open so that the cavity of the inner cylinder sleeve 113 is connected to the cavity of the outer cylinder sleeve 112, and the energy storage chamber 111 is formed by the outer cylinder sleeve 112, the inner cylinder sleeve 113, the cover plate 114, the base 115 and the piston 120. The length direction of the striking member 200 is arranged in the up-down direction. The upper end of the striking member 200 is connected to the piston 120 through a threaded fit and / or a pin rod and the like, and the lower end of the striking member 200 extends downward from the cylinder structure 110. In this embodiment, the energy storage medium 130 is a gas disposed in the energy storage chamber 111. The upward movement of the piston 120 reduces the volume of the energy storage chamber 111, thereby compressing the gas in the energy storage chamber 111, and the gas pressure of the gas increases accordingly, thereby realizing the energy storage of the energy storage medium. When the striking member 200 is released, the piston 120 drives the striking member 200 to move downward toward the bottom dead center position (BDC) under the action of the high-pressure gas in the energy storage chamber 111, and the volume of the energy storage chamber 111 increases. The gas in the energy storage chamber 111 expands to reduce the gas pressure. As an alternative to this embodiment, the energy storage medium 130 may also adopt an energy storage spring in the prior art. In this case, the cylinder structure 110 may only be provided with one cylinder sleeve, the energy storage spring is provided in the cylinder sleeve, the upper end of the energy storage spring is positioned relative to the cylinder sleeve, the lower end of the energy storage spring contacts the piston 120, the piston 120 moving upward compresses the energy storage spring to achieve energy storage, and the energy storage spring that restores the deformation applies force to the piston 120 so that the piston 120 drives the striking member 200 to move downward toward the bottom dead center position (BDC). As an alternative to this embodiment, the energy storage medium 130 may adopt a combination of gas and energy storage spring. In this case, the energy storage spring is provided in the inner cylinder sleeve 113, the energy storage chamber 111 is filled with gas, the piston 120 moving upward compresses the gas and compresses the energy storage spring to achieve energy storage, the high-pressure gas and the energy storage spring that restores the deformation can simultaneously apply force to the piston 120 so that the piston 120 drives the striking member 200 to move downward toward the bottom dead center position. As an alternative to this embodiment, when the energy storage medium 130 is only gas, the cylinder structure 110 may also be provided with only one cylinder sleeve on the premise of meeting the nailing requirements.

[0150] In this embodiment, a shock absorber 140 is provided at the lower end of the cylinder structure 110 and is located on the inner periphery of the base 115. The shock absorber 140 is provided with a through hole 141 for the striking member 200 to pass through. When the piston 120 and the striking member 200 move downward until the piston 120 and the shock absorber 140 contact, the piston 120 and the striking member 200 move to the bottom dead center position (BDC), and the piston 120 and the striking member 200 cannot continue to move downward. The shock absorber 140 is used to absorb the vibration generated by the piston 120 and the striking member 200 when they move to the bottom dead center position (BDC), so as to prevent other components from following the vibration or being offset, and also improve the user experience. As a preferred solution of this embodiment, in order to prevent the circumferential rotation of the shock absorber 140 from interfering with the striking movement of the striking member 200, the cross-sectional shape of the shock absorber 141 along the vertical direction can be set to be non-circular. Accordingly, the inner hole of the base 115 is set to be consistent with the shape of the shock absorber 141. The shock absorber 141 is arranged on the inner periphery of the base 115 through a non-circular matching structure, so that the shock absorber 141 is circumferentially limited.

[0151] Combination Figure 3 , Figure 5 A fixed support seat 610 is provided in the housing 400, and the base 115 is fixed to the upper end of the support seat 610, so that the cylinder structure 110 is fixed to the top of the support seat 610. A nose-shaped guide seat 620 is fixed to the lower end of the support seat 610, and the lower part of the guide seat 620 extends downward from the front of the housing 400. Figure 6 The support seat 610 and the guide seat 620 have an overlapping portion in the up-down direction, and the overlapping portion of the two forms a guide groove 631 extending in the up-down direction. The guide seat 620 is also provided with a guide rib 632 extending in the up-down direction. The lower end of the striking piece 200 extends into the guide groove 631 and a groove 220 for the guide rib 632 to be embedded is provided on the side facing the guide rib 632. The striking piece 200 moving up and down is limited by the guide groove 631 and the guide rib 632, so that the striking piece 200 maintains a straight line motion during movement, thereby preventing the striking piece 200 from swinging during movement and affecting the nailing effect.

[0152] Combination Figure 7In this embodiment, the striking member 200 is provided with a plurality of protruding teeth 210 spaced apart along the length direction, and the outer peripheral surface of the driving wheel 330 is provided with a plurality of transmission teeth 331 spaced apart along the circumferential direction, and the transmission teeth 331 mesh with the protruding teeth 210. When the driving wheel 330 rotates forwardly around its own central axis in the direction indicated by +ω, the driving wheel 330 drives the striking member 200 and the piston 120 to move upward through the meshing of the transmission teeth 331 and the protruding teeth 210, so that the striking member 200 and the piston 120 can move upward to return. When the striking member 200 moves downward toward the bottom dead center position driven by the piston 120, the striking member 200 moving downward drives the driving wheel 330 to reverse around its own central axis in the direction indicated by -ω through the engagement of the convex teeth 210 and the transmission teeth 331. The reverse rotation of the driving wheel 330 removes the obstruction of the driving wheel 330 to the downward movement of the striking member 200, so that the striking member 200 can move toward the bottom dead center position driven by the piston 120. In order to ensure the structural strength of the striking member 200, in this embodiment, the convex teeth 210 are preferably integrally formed with the striking member 200. As an alternative to this embodiment, a rack can also be provided on the striking member 200, and the convex teeth 210 can be provided on the rack.

[0153] Combination Figure 8 The driving assembly 300 is disposed in the housing 400. The power member 310 in this embodiment includes a motor 311 and a reducer 312. The motor 311 has a main shaft 3111, which is transmission-connected to the power input end of the reducer 312, and the output shaft 3121 is the power output end of the reducer 312. In this embodiment, the power member 310 is located below the handle 410. The motor 311 and the reducer 312 are preferably coaxially arranged and arranged axially in the front-to-back direction. The axial directions of the motor 311 and the reducer 312 are perpendicular to the length direction of the striking member 200.

[0154] Combination Fig. 9 , Fig.10The reducer 312 includes a housing 3122 and a planetary gear reduction structure disposed in the housing 3122. In this embodiment, the reducer 312 preferably adopts a three-stage planetary gear reduction structure. Specifically, the housing 3122 includes a main housing 3122a and a rear cover 3122b disposed at the rear end of the main housing 3122a. The planetary gear reduction structure includes a primary sun gear 3123, a primary planetary gear 3124, a primary ring gear 3125, a primary planet carrier 3126, a secondary sun gear 3127, a secondary planetary gear 3128, a secondary planet carrier 3129, a secondary ring gear 3130, a tertiary sun gear 3131, a tertiary planetary gear 3132, a tertiary planet carrier 3133, and a tertiary ring gear 3134. A power connector 3123a is provided at the rear end of the first-stage sun gear 3123, and the power connector 3123a is fixedly sleeved on the main shaft 3111 of the motor 311 so that the first-stage sun gear 3123 can be driven to rotate by the main shaft 3111. A plurality of first-stage planetary gears 3124 are evenly spaced along the outer circumference of the first-stage sun gear 3123, and each of the first-stage planetary gears 3124 is meshed with the outside of the first-stage sun gear 3123 and with the inside of the first-stage ring gear 3125. The first-stage ring gear 3125 is fixed in the main housing 3122a, and a first-stage support shaft 3126a corresponding to the first-stage planetary gear 3124 is provided on the first-stage planetary carrier 3126, and each of the first-stage planetary gears 3124 is respectively arranged on each of the first-stage support shafts 3126a. The secondary sun gear 3127 is fixed together with the primary planetary carrier 3126 or is formed as one piece. A plurality of secondary planetary gears 3128 are evenly spaced along the outer circumference of the secondary sun gear 3127. Each secondary planetary gear 3128 is meshed with the outside of the secondary sun gear 3127 and is meshed with the inside of the secondary ring gear 3130. The secondary ring gear 3130 is fixed in the main housing 3122a. The secondary planetary carrier 3129 is provided with a secondary support shaft 3129a corresponding to the secondary planetary gear 3128, and each secondary planetary gear 3128 is respectively arranged on each secondary support shaft 3129a. The three-stage sun gear 3131 is fixed together or integrally formed with the two-stage planet carrier 3129. A plurality of three-stage planet gears 3132 are evenly spaced along the outer periphery of the three-stage sun gear 3131. Each three-stage planet gear 3132 meshes with the outside of the three-stage sun gear 3131 and meshes with the inside of the three-stage ring gear 3134. The three-stage ring gear 3134 is fixed in the main housing 3122a. The three-stage planet carrier 3133 is provided with a three-stage support shaft 3133a corresponding to the three-stage planet gear 3132. Each three-stage planet gear 3132 is respectively arranged on each three-stage support shaft 3133a. The output shaft 3121 is rotatably mounted in the housing 3122 through a bearing. The rear end of the output shaft 3121 is transmission-connected with the three-stage planet carrier 3133. The front end of the output shaft 3121 extends forward from the housing 3122 of the reducer 312.When the motor 311 is working, it drives the primary sun gear 3123 to rotate around the central axis L1 of the reducer 312. The rotating primary sun gear 3123 drives the secondary sun gear 3127 to rotate around the central axis L1 of the reducer 312 through the primary planetary gear 3124 and the primary planetary carrier 3126. The rotating secondary sun gear 3127 drives the tertiary sun gear 3131 to rotate around the central axis L1 of the reducer 312 through the secondary planetary gear 3128 and the secondary planetary carrier 3129. The rotating tertiary sun gear 3131 drives the output shaft 3121 to rotate around the central axis L1 of the reducer 312 through the tertiary planetary gear 3132 and the tertiary planetary carrier 3133 to achieve power output. As an alternative to this embodiment, the reducer 312 can also adopt other reasonable reduction structures such as a secondary planetary gear reduction structure or a four-stage planetary gear reduction structure. As an optional solution of this embodiment, the rear end of the output shaft 3121 and the tertiary planetary carrier 3133 can be connected to each other through a non-circular shaft hole matching structure or a spline matching structure.

[0155] Combination Fig.11 , Fig.12 In this embodiment, the drive assembly 300 further includes a rotating shaft 320, which is rotatably mounted on the support seat 610 through a bearing. In order to reduce the structural difficulty of the transmission structure 350, the central axes of the output shaft 3121 and the rotating shaft 320 are preferably arranged to coincide with each other, that is, the central axis of the rotating shaft 320 is preferably arranged to roughly coincide with the central axis L1 of the reducer 312. The transmission structure 350 includes a driving wheel I351A arranged on the output shaft 3121 and a driven wheel I352A arranged on the rotating shaft 320. Since the driving wheel 330 is also arranged on the rotating shaft 320, the output shaft 3121, the driving wheel I351A, the driven wheel I352A, the rotating shaft 320 and the driving wheel 330 rotate around the same central axis L1, so that the transmission matching difficulty between the output shaft 3121 and the rotating shaft 320 can be reduced while the radial size of the drive assembly 300 is reasonably controlled.

[0156] Combination Fig.13 , one of the driving wheel Ⅰ351A and the driven wheel Ⅰ352A is provided with a movable transmission ratchet 353A, and the other is provided with a transmission ratchet groove 354A, the transmission ratchet 353A is embedded in the transmission ratchet groove 354A so that the driving wheel Ⅰ351A and the driven wheel Ⅰ352A are in an engaged state, and the transmission ratchet 353A is disengaged from the transmission ratchet groove 354A so that the driving wheel Ⅰ351A and the driven wheel Ⅰ352A are in a separated state. Specifically in this embodiment, the driving wheel Ⅰ351A is arranged at the front end of the output shaft 3121 through a non-circular shaft hole matching structure, and the driven wheel Ⅰ352A is arranged at the rear end of the rotating shaft 320 through a non-circular shaft hole matching structure. Fig.15, a concave cavity 3511A is provided on the front side of the driving wheel Ⅰ351A, and the driven wheel Ⅰ352A is accommodated in the cavity 3511A. The transmission ratchet 353A is swingably provided on the outer edge of the driven wheel Ⅰ352A through a pin 355A, and the transmission ratchet groove 354A is provided on the cavity wall 35111 of the cavity 3511A. The transmission ratchet groove 354A is provided with a first groove wall 3541A connected to the cavity wall 35111 at one arc end and a second groove wall 3542A connected to the cavity wall 35111 at the other arc end. The inclination of the first groove wall 3541A relative to the cavity wall 35111 is greater than the inclination of the second groove wall 3542A relative to the cavity wall 35111. Combined with Fig.16 The driven wheel I 352A is provided with a notch 3521 at the outer edge for arranging the transmission ratchet 353A, and the notch 3521 is provided with a lug 3522 which is arranged approximately in the center of the driven wheel I 352A in the axial direction. Fig.14 The transmission ratchet 353A is provided with a notch 3531 for avoiding the lug 3522 in the middle of the thickness direction, the lug 3522 is inserted into the notch 3531, and the pin 355A passes through the lug 3522 and the hole on the transmission ratchet 353A so that the transmission ratchet 353A is hinged to the driven wheel I 352A, and the transmission ratchet 353A can swing toward the center of the driven wheel I 352A or away from the center of the driven wheel I 352A. As an alternative to this embodiment, the transmission ratchet can also be slidably arranged at the outer edge of the driven wheel I, and the transmission ratchet can slide toward the center of the driven wheel I or away from the center of the driven wheel I.

[0157] A fixed positioning rod 640 is provided on the support seat 610, and the transmission ratchet 353A that contacts the positioning rod 640 is forced to disengage from the transmission ratchet groove 354A. In order to ensure that the transmission structure 350 can smoothly switch between the transmission engagement state and the separation state, the transmission structure 350 also includes a transmission spring 356A that biases the transmission ratchet 353A toward the transmission ratchet groove 354A. The transmission spring 356A is deformed when the transmission ratchet 353A is forced to disengage from the transmission ratchet groove 354A. When the transmission ratchet 353A is released, the transmission spring 356A recovers the deformation and pushes the transmission ratchet 353A toward the transmission ratchet groove 354A. In this embodiment, the transmission ratchet 353A is provided with a positioning groove 3532 on the side facing the driving wheel I 351A, one end of the transmission spring 356A is pressed against the side wall of the notch 3521 to achieve positioning, and the other end of the transmission spring 356A is inserted into the positioning groove 3532 to contact the transmission ratchet 353A. When the transmission ratchet 353A is disengaged from the transmission ratchet groove 354A due to the interference of the positioning rod 640 and the transmission spring 356A is compressed, the transmission structure 350 is in a separated state, and the driven wheel I352A can be reversed relative to the driving wheel I351A, that is, the driven wheel I352A, the rotating shaft 320 and the driving wheel 330 can be reversed relative to the driving wheel I351A and the output shaft 3121, so as to prevent the driving wheel 330 from causing movement obstruction to the striking member 200. When the driven wheel I 352A and the driving wheel I 351A rotate in the opposite direction until the transmission ratchet 353A and the transmission ratchet groove 354A are aligned again, the transmission spring 356A that restores the deformation biases the transmission ratchet 353A toward the transmission ratchet groove 354A, so that the transmission ratchet 353A and the transmission ratchet groove 354A are matched again, so that the transmission structure 350 is restored to the engaged state, so that the output shaft 3121 can drive the rotating shaft 320 and the driving wheel 330 to rotate forward through the transmission structure 350, so that the forward rotating driving wheel 330 can drive the striking member 200 to move upward to return. As an alternative to this embodiment, the transmission ratchet 353A can also be provided with a positioning column on the side facing the driving wheel I 351A, and the other end of the transmission spring 356A is provided on the positioning column to achieve contact with the transmission ratchet 353A.

[0158] Combination Fig.17 The fastener driving tool of this embodiment further includes a lock buckle 710 having a locked state and an unlocked state. The lock buckle 710 in the locked state cooperates with the striking member 200 to lock the striking member 200, and the lock buckle 710 in the unlocked state releases the striking member 200 so that the striking member 200 can be driven by the piston 120 to move from the bottom dead center position. The lock buckle 710 in the locked state locks the striking member 200 to prevent the striking member 200 from moving from the bottom dead center position due to accidental reasons under the drive of the piston 120, thereby ensuring the safety of the tool.

[0159] Combination Fig.17In order to enable the lock buckle 710 to release the striking member 200 in time, in this embodiment, the driving assembly 300 further includes an unlocking member 360 that rotates with the output shaft 3121 or the driving wheel 330, and the unlocking member 360 is used to drive the lock buckle 710 to switch from the locked state to the unlocked state, so that the striking member 200 is released by the lock buckle 710. In order to reduce the difficulty of the unlocking member 360 driving the lock buckle 710 to switch states, the lock buckle 710 is preferably slidable left and right on the support seat 610, so that the sliding direction of the lock buckle 710 is perpendicular to the axial direction of the driving assembly 300. Specifically, the unlocking member 360 in this embodiment rotates with the rotating shaft 320, and the unlocking member 360 is preferably integrally formed with the driving wheel 330 or separately formed and fixed together. The rotation centerline of the unlocking member 360 is roughly coincident with the central axis L1 of the reducer 312. The unlocking member 360 is a cam structure. The outer peripheral surface of the unlocking member 360 includes an arc surface 361 and an avoidance surface 362 provided between the two ends of the arc surface 361. The center of the arc surface 361 is located on the central axis L1 and has a radius of R. The avoidance surface 362 is roughly flat and its two ends are respectively smoothly connected to the two ends of the arc surface 361. The distance between the avoidance surface 362 and the central axis L1 is less than R. The rotating unlocking member 360 switches the lock buckle 710 to the unlocked state and maintains it through the arc surface 361 and the lock buckle 710. The rotating unlocking member 360 releases the lock buckle 710 through the avoidance surface 362 so that the lock buckle 710 can return to the locked state. As a feasible solution of this embodiment, the avoidance surface 362 can be an inclined surface parallel to the central axis L1, or a curved surface structure such as an inwardly concave curved surface or an S-shaped curved surface that bends toward the central axis L1.

[0160] Combination Fig.18In order to allow the lock buckle 710 released by the unlocked member 360 to return to the locked state smoothly, the fastener driving tool also includes a locking spring 720 that biases the lock buckle 710 toward the striking member 200. The locking spring 720 is configured to be deformed by force when the lock buckle 710 switches from the locked state to the unlocked state, and to drive the lock buckle 710 released by the unlocked member 360 to return from the unlocked state to the locked state when the striking member 200 returns to its position. The lock buckle 710 includes a linkage portion 711 close to the unlocking member 360 and a locking portion 712 away from the unlocking member 360. The thickness of the linkage portion 711 is less than the thickness of the locking portion 712. The unlocking member 360 is arranged on the rear side of the driving wheel 330, and the locking portion 712 is correspondingly located on the rear side of the striking member 200. One end of the locking spring 720 is positioned, and the other end of the locking spring 720 is inserted into the hole on the lock buckle 710 to contact the lock buckle 710. The locking spring 720 is in a compressed state and presses the lock buckle 710 against the unlocking member 360. The striking member 200 is provided with a locking groove 230 on the side facing the locking portion 712 for the locking portion 712 to be embedded. When the striking member 200 returns to its original position, the lock buckle 710, under the preload force of the locking spring 720, causes the linkage portion 711 to abut against the outer circumferential surface of the unlocking member 360 and causes the locking portion 712 to be inserted into the locking groove 230 of the striking member 200, and the locking portion 712 cooperates with the locking groove 230 to lock the striking member 200. When nailing is required, the unlocking member 360 rotating with the driving wheel 330 causes the arc surface 361 to abut against the linkage portion 711 of the lock buckle 710, and the lock buckle 710 is pushed to slide in a direction away from the central axis L1, causing the locking portion 712 to disengage from the locking groove 230, so that the striking member 200 is released by the lock buckle 710, and the released striking member 200 can move downward toward the bottom dead center position under the drive of the piston 120. During the striking process, the linkage part 711 of the lock buckle 710 contacts the arc surface 361, so that the lock buckle 710 will basically not contact the striking member 200 when the striking member 200 moves toward the bottom dead point position, avoiding the motion interference of the lock buckle 710 on the striking member 200. When the driving wheel 330 drives the striking member 200 to move upward and is about to return to its original position, the linkage part 711 of the lock buckle 710 is separated from the arc surface 361 and contacts the avoidance surface 362. Since the distance between the avoidance surface 362 and the central axis L1 is less than the radius R of the arc surface 361, the unlocking member 360 releases the lock buckle 710, and the locking spring 720 that restores the deformation can drive the lock buckle 710 released by the unlocking member 360 to slide toward the unlocking member 360. When the striking member 200 returns to its original position, the locking portion 712 of the lock buckle 710 is embedded in the locking groove 230, and the lock buckle 710 returns to the locked state and locks the striking member 200. As an alternative to this embodiment, the unlocking member 360 can be independently provided, and the independent unlocking member 360 can be provided on the rotating shaft 320 to rotate with the rotating shaft 320, or can be provided on the output shaft 3121 to rotate with the output shaft 3121.As a preferred solution of this embodiment, a height H1 of the locking groove 230 in the up-down direction is slightly greater than a height H2 of the locking buckle 710 in the up-down direction.

[0161] Combination Figures 23a to 23e In this embodiment, the striking member 200 has an initial position locked by the lock 710, and the lock position is between the top dead center position (TDC) and the bottom dead center position (BDC), that is, the initial position is lower than the top dead center position (TDC). Specifically, the number of transmission teeth 331 on the circumference of the driving wheel 330 is slightly greater than the number of protruding teeth 210 on the striking member 200. Fig.23a In the initial position shown in FIG. 1 , the protruding tooth 210 or the two protruding teeth 210 at the bottom have not yet engaged with the driving wheel 330, and the transmission ratchet 353A has not yet disengaged from the transmission ratchet groove 354A. When the tool is striking, the driving wheel 330 is driven by the power member 310 to rotate forward first, and the driving wheel 330 that rotates forward drives the striking member 200 and the piston to move forward. Fig.23a The initial position shown moves upward to Figure 23b The top dead center position (TDC) is shown. At the same time, the unlocking member 360 that rotates synchronously with the driving wheel 330 switches the lock buckle 710 from the locked state to the unlocked state through the interference between the arc surface 361 and the lock buckle 710. The lock buckle 710 switched to the unlocked state disengages from the lock slot 230, thereby releasing the striking member 200. When the forwardly rotating driving wheel 330 drives the striking member 200 to move upward until the transmission tooth 331 on the driving wheel 330 is about to disengage from the convex tooth 210 at the lower end of the striking member 200, the striking member 200 moves to the top dead center position (TDC). At this time, the transmission ratchet 353A overcomes the bias of the transmission spring 356A under the resistance of the positioning rod 640, swings toward the center of the driven wheel I 352A and disengages from the transmission ratchet groove 354A. The transmission ratchet 353A disengaged from the transmission ratchet groove 354A abuts against the cavity wall 35111 of the concave cavity 3511A, and the transmission structure 350 switches from the engaged state to the disengaged state. Subsequently, the compressed gas in the energy storage chamber 111 expands and exerts force on the piston 120, and the piston 120 drives the striking member 200 to move downward from the top dead center position (TDC) to the bottom dead center position (BDC). During the downward movement of the piston 120 and the striking member 200, since the speed of the striking member 200 moving downward is much greater than the speed at which the locking spring 720 drives the lock buckle 710 to return, when the striking member 200 moves downward to the point where the locking groove 230 is located below the lock buckle 710, the lock buckle 710 has not yet returned to the locked state under the force of the locking spring 720, thereby preventing the lock buckle 710 from being embedded in the locking groove 230 during the downward movement of the striking member 200 and affecting the striking movement of the striking member 200. Fig.23cDuring the movement of the piston 120 and the striking member 200 toward the bottom dead center (BDC), the striking member 200 moving downward drives the driving wheel 330 to reverse in the direction indicated by -ω, and the driving wheel 330 drives the rotating shaft 320 and the driven wheel I352A to reverse synchronously, and the driven wheel I352A and the driving wheel I351A rotate in opposite directions, and the transmission ratchet 353A abuts against the cavity wall 35111 of the concave cavity 3511A and moves relative to the cavity wall 35111. During this process, the lock buckle 710 abuts against the arc surface 361 and is kept in the unlocked state. When the piston 120 and the striking member 200 move downward until the piston 120 contacts the shock absorber 140, the piston 120 and the striking member 200 move to Fig.23d At the bottom dead center position (BDC) shown in FIG. 1 , the transmission tooth 331 on the driving wheel 330 is meshed with the convex tooth 210 at the uppermost end of the striking member 200, and the transmission ratchet tooth 353A is about to be re-aligned with the transmission ratchet groove 354A. Fig.23e When the driving wheel I351A rotates forward until the transmission ratchet groove 354A and the transmission ratchet tooth 353A are realigned, the transmission spring 356A that has restored its deformation drives the transmission ratchet tooth 353A that has separated from the cavity wall 35111 to re-embed into the transmission ratchet groove 354A, and the transmission structure 350 returns to the engaged state. Then, the driving wheel I351A that is rotating forward drives the driven wheel I352A to rotate forward synchronously through the cooperation between the transmission ratchet groove 354A and the transmission ratchet tooth 353A. The driven wheel I352A drives the driving wheel 330 to rotate forward synchronously through the rotating shaft 320. The driving wheel 330 that is rotating forward drives the striking member 200 and the piston 120 to move upward and return to their original position through the meshing of the transmission tooth 331 and the convex tooth 210. Fig.23a When the striking member 200 and the piston 120 move upward until the locking groove 230 corresponds to the lock buckle 710, the locking spring 720 that restores the deformation drives the lock buckle 710 to return from the unlocked state to the locked state, and the locking portion 712 of the lock buckle 710 is embedded in the locking groove 230 to lock the striking member 200 in the initial position, thus completing a striking cycle. In order to ensure the striking force on the fastener, the striking member 200 can contact the fastener to be struck before or when it moves to the bottom dead center position (BDC).

[0162] Combination Fig.19 , Fig. 20 The support seat 610 is fixed with a first seat plate 661 and a second seat plate 662 for mounting the lock buckle 710. The first seat plate 661 and the second seat plate 662 cooperate to form a groove for the lock buckle 710 to slide. The lock buckle 710 is located between the first seat plate 661 and the second seat plate 662 and is partially located in the groove. The support seat 610 is fixed with a third seat plate 663 on the side of the lock buckle 710 facing away from the striking member 200. One end of the locking spring 720 abuts against the third seat plate 663 to achieve positioning.

[0163] The fastener driving tool also includes a locking switch 650 that is positioned and arranged, and the lock buckle 710 that returns to the locked state triggers the locking switch 650. Specifically, the locking switch 650 can be a micro switch, and the locking switch 650 is fixed to the first seat plate 661 through the fourth seat plate 664. The lock buckle 710 is provided with a push rod 730 for triggering the locking switch 650, and the push rod 730 presses the elastic sheet of the micro switch to trigger the micro switch. When the lock buckle 710 moves from the locked state to the unlocked state, the push rod 730 releases the locking switch 650 to change the on-off state of the locking switch 650. When the lock buckle 710 returns from the unlocked state to the locked state, the push rod 730 triggers the locking switch 650 to change the on-off state of the locking switch 650 again. The change in the on-off state of the locking switch 650 is used to determine whether the lock buckle 710 returns to the locked state, thereby determining whether the striking member 200 returns to the initial position. As an alternative to this embodiment, the locking switch 650 may also adopt a non-contact switch such as a magnetic switch, a photoelectric switch, etc. When the locking switch 650 adopts a magnetic switch, a magnet for triggering the locking switch may be provided on the lock buckle 710.

[0164] Combination Fig.11 , Fig.12 The fastener driving tool also includes a magnetic sensing member 660 which is positioned and arranged. A magnet 370 for triggering the magnetic sensing member 660 is arranged on the driving wheel 330. The power member 310 slows down or brakes in advance according to the signal that the magnetic sensing member 660 is triggered by the magnet 370. Specifically, the magnetic sensing member 660 can be a sensing element such as a Hall element or a reed switch which can output different electrical signals according to the change of magnetic field strength. The magnetic sensing member 660 is fixed to the support seat 610 through a bracket. There is a certain distance between the magnetic sensing member 660 and the driving wheel 330 to avoid causing rotation interference to the driving wheel 330. The magnet 370 is completely embedded in the driving wheel 330. As an alternative to this embodiment, the magnet 370 can also be arranged on the striking member 200.

[0165] Combination Fig.21 The fastener driving tool of this embodiment further includes a control module 670 disposed in the housing 400, the motor 311 is controlled by the control module 670, and the locking switch 650 and the magnetic sensing member 660 are electrically connected to and / or signal-connected to the control module 670. The control module 670 determines whether the striking member 200 is in the initial position according to the signal fed back by the locking switch 650, and the control module 670 determines whether the striking member 200 is about to return to the initial position according to the signal fed back by the magnetic sensing member 660. Figure 1The handle 410 of the housing 400 is provided with a trigger 681 for starting the tool, and a start-stop switch 682 electrically connected to and / or signal-connected to the control module 670 is provided in the housing 400 corresponding to the trigger 681. The trigger 681 is pressed to trigger the start-stop switch 682, and the released trigger 681 releases the start-stop switch 682. The control module 670 starts or stops the tool according to the signal fed back by the start-stop switch 682. In order to better meet the user's needs, the housing 400 is also provided with a push block 691 for selecting a nailing mode. A mode selection switch 692 electrically connected to and / or signal-connected to the control module 670 is provided in the housing 400 corresponding to the push block 691. The user can select a single nailing mode or a continuous nailing mode through the push block 691.

[0166] In this embodiment, when the forward-rotating driving wheel 330 drives the striking member 200 to move upward until the magnetic sensing member 660 is triggered by the magnet 370, it indicates that the striking member 200 is about to return to the initial position. At this time, the control module 670 commands the motor 311 to decelerate according to the trigger signal of the magnetic sensing member 660. When the locking switch 650 is triggered by the push rod 730, it indicates that the striking member 200 has returned to the initial position. At this time, the control module 670 commands the motor 311 to brake according to the trigger signal of the locking switch 650, so that the driving wheel 330 stops rotating forward. By triggering the magnetic sensing member 660 and the locking switch 650 successively, the motor 311 is first decelerated and then braked when a striking cycle is about to end, which can reduce the braking difficulty of the motor 311 and is conducive to ensuring the working performance stability of the motor 311. As an optional solution of this embodiment, when the control module 670 commands the motor 311 to decelerate according to the trigger signal of the magnetic sensing member 660, the motor 311 can decelerate by any value within 50% to 80%.

[0167] As an alternative to this embodiment, the locking switch 650 can be cancelled and only the magnetic sensing member 660 can be retained. When the magnetic sensing member 660 is triggered by the magnet 370, it indicates that the striking member 200 has returned to the initial position, and the control module 670 commands the motor 311 to brake according to the trigger signal of the magnetic sensing member 660. As another alternative to this embodiment, the magnetic sensing member 660 can be cancelled and only the locking switch 650 can be retained. When the locking switch 650 is triggered, it indicates that the striking member 200 has returned to the initial position, and the control module 670 commands the motor 311 to brake according to the trigger signal of the locking switch 650.

[0168] Combination Figure 2 , Fig. 22In order to ensure working safety, a safety structure is provided on the guide seat 620. Specifically, the safety structure includes a safety switch 810, a push rod 820, a pressure piece 830, a safety spring 840, a push frame 850 and an elastic sleeve 860. The safety switch 810 is fixed on the guide seat 620 or the support seat 610. The safety switch 810 is electrically connected to and / or signal-connected to the control module 670. The safety switch 710 in this embodiment 810 adopts a micro switch. The push rod 820 is arranged on the guide seat 620 and can move up and down through a clamp 870. The movement stroke of the push rod 820 is limited by the clamp 870. The pressure piece 830 is arranged on the push rod 820 and is used to trigger the safety switch 810. The safety spring 840 is in a compressed state and the upper end is positioned and the lower end is against the pressure piece 830. The safety spring 840 pushes the push rod 820 downward. The push frame 850 is connected to the lower end of the push rod 820, and the elastic sleeve 860 is sleeved on the lower end of the push frame 850. Under normal conditions, the safety spring 840 pushes the push rod 820 downward, causing the pressure plate 830 to release the safety switch 810, and the safety switch 810 is in an untriggered state. The control module 670 will not start the tool when the safety switch 810 is in an untriggered state. When the user holds the tool and presses the elastic sleeve 860 against the workpiece, the elastic sleeve 860 drives the push rod 820 to move upward through the push frame 850 to overcome the preload force of the safety spring 840 and compress the safety spring 840. The pressure plate 830 that moves upward with the push rod 820 triggers the safety switch 810. The control module 670 determines that the tool is ready to strike according to the trigger signal of the safety switch 810. After the trigger 681 is compressed, the control module 670 commands the motor 311 to work. When the elastic sleeve 860 is released, the safety spring 840 that restores its deformation drives the push rod 820, the top frame 850 and the elastic sleeve 860 to move downward and return to their original positions, and the pressing piece 830 releases the safety switch 810, so that the safety switch 810 returns to an untriggered state. As an alternative to this embodiment, the safety switch 710 can also adopt an existing non-contact switch such as a magnetic switch, a photoelectric switch, a proximity switch, etc. The push rod 820 that moves upward can cause the electrical signal output by the safety switch 810 to change, and the control module 670 determines that the tool is ready to strike based on the change in the electrical signal of the safety switch 810.

[0169] In order to enable the tool to adjust the nailing depth, in this embodiment, the top frame 850 is connected to the lower end of the top rod 820 by threaded cooperation. When the nailing depth needs to be adjusted, force is applied to the top rod 820 to rotate it around its own central axis. The upper and lower positions of the rotating top rod 820 relative to the top frame 850 change, thereby changing the stroke of the top rod 820 moving up and down relative to the clamp 870, and further changing the stroke of the top frame 850 moving up and down to adjust the nailing depth.

[0170] As an alternative to the present embodiment, the safety switch assembly in the present embodiment may also adopt the contents disclosed in the prior art such as CN109623737B, US11478912B2, EP3670093A1, etc., which will not be described in detail here.

[0171] Combination Figure 1 The fastener driving tool of this embodiment further includes a nail feeding assembly 500 for supplying fasteners to be driven. The front end of the nail feeding assembly 500 is detachably connected to the guide seat 620 through a buckle structure, and the rear end of the nail feeding assembly 500 is detachably connected to the rear end of the housing 400 through a snap-fit ​​structure. The nail feeding assembly 500 is provided with a guide rail 510 and a push block 520. The guide rail 510 is provided with a receiving groove for loading fasteners. The push block 520 is movably arranged on the guide rail 510. The push block 520 biases the fasteners in the receiving groove forward under the action of a tension spring or other elastic member, so that the fasteners in the receiving groove can automatically enter the position to be driven. The fasteners to be struck can be straight nails, staples, etc. The tool can be configured with a variety of nail feeding components 500 according to the type or model or continuous arrangement of the fasteners. Other structures of the nail feeding components 500 can refer to the contents disclosed in the prior art such as CN109623737B, US11478912B2, EP3670093A1, etc., which will not be repeated here.

[0172] Combination Fig.24In order to prevent empty hitting, a stopper 881 for limiting the push rod 820 is provided on the guide seat 620. The stopper 881 prevents the push rod 820 from triggering the safety switch 810 when the number of fasteners to be hit is reduced to the warning number. In this embodiment, a part of the stopper 881 is inserted into the mounting hole 621 on the guide seat 620, and the stopper 881 can move forward and backward relative to the guide seat 620. A bias spring 882 is provided between the clamp 870 and the stopper 881. The bias spring 882 is in a compressed state and one end of the bias spring 882 is against the clamp 870 to realize the positioning setting, and the other end is against the stopper 881. The bias spring 882 pushes the stopper 881 backward, and a pressing plate 530 is provided on the push block 520 of the nail feeding assembly 500 to push the stopper 881 forward. When the number of fasteners in the nail feeding assembly 500 is reduced to the warning number, the push block 520 moving to the front end of the guide rail 510 causes the pressure plate 530 to contact the block 881 and causes the block 881 to overcome the preload force of the bias spring 882 and move forward and further compress the bias spring 882. The block 881 moving forward causes its part to be stuck between the clamp 870 and the thickened portion 821 of the push rod 820. At this time, if the elastic sleeve 860 is pressed against the workpiece, due to the blocking effect of the block 881, the push frame 850 that is hit by the workpiece cannot drive the push rod 820 to move up to trigger the safety switch 810, and the tool cannot be started, thereby reminding the user to load the fasteners. As a feasible solution of this embodiment, when the number of fasteners is reduced to 0, 1, 2 or 3, the block 881 is partially stuck between the clamp 870 and the thickened portion 821 of the push rod 820 to prevent the push rod 820 from triggering the safety switch 810.

[0173] When the tool is in standby mode, the lock 710 is in a locked state and locks the striking member 200 and the piston 120 in the initial position, the gas in the energy storage chamber 111 as the energy storage medium 130 is in a compressed state, and the transmission ratchet 353A is embedded in the transmission ratchet groove 354A to put the transmission structure 350 in an engaged state. After the tool is started, the motion state of the striking member 200, the driving wheel 330, and the transmission structure 350 can be combined with the above content and Figure 23a to Figure 23e Records of.

[0174] When the driving wheel 330 rotates forward until the magnetic sensing member 660 is triggered by the magnet 370, the motor 311 decelerates. At this time, the striking member 200 is about to move upward to the locking groove 230 corresponding to the lock buckle 710. The lock buckle 710 is disengaged from the arc surface 361 of the unlocking member 360 and corresponds to the avoidance surface 362. The locking spring 720 that restores the deformation drives the lock buckle 710 released by the unlocking member 360 to slide toward the unlocking member 360 to return the lock buckle 710 from the unlocking state to the locking state. The lock buckle 710 returned to the locked state causes the locking portion 712 to be embedded in the locking groove 230 of the striking member 200. The lock buckle 710 that cooperates with the locking groove 230 locks the striking member 200 in the initial position. When the lock buckle 710 returns to the locked state, the push rod 730 triggers the locking switch 650 , and the control module 670 determines that the striking member 200 returns to the initial position according to the trigger signal of the locking switch 650 , and the motor 311 brakes.

[0175] If the striking member 200 gets stuck while returning to the top dead center position (TDC), the driving load of the motor 311 increases, and the current of the motor 311 also increases accordingly. In this case, the control module 670 can command the motor 311 to stop.

[0176] If the push rod 730 does not trigger the locking switch 650 after the motor 311 stops, the control module 670 determines that the striking member 200 has not returned to the top dead center position at the end of the previous nailing cycle. When starting the next nailing cycle, the control module 670 first commands the motor 311 to drive the striking member 200 to return to the top dead center position and then executes the nailing cycle.

[0177] Combination Figure 2 , Figure 4 In order to make the gas used as the energy storage medium meet the nailing requirements, the support seat 610 is provided with an air charging valve 910 for inflating the energy storage chamber 111. After the tool has been used for a period of time, it can be inflated through the air charging valve 910 to ensure the striking force of the striking member 200 on the fastener. The cover plate 114 is provided with a relief valve 920 for relieving the pressure in the energy storage chamber 111. When the tool leaves the factory, the air pressure in the energy storage chamber 111 can be adjusted by combining the relief valve 920 with the air charging valve 910. In the subsequent use process, if the ambient temperature is high and the air pressure in the energy storage chamber 111 is too high, the air pressure in the energy storage chamber 111 can also be adjusted through the relief valve 920.

[0178] In order to facilitate the hanging of the fastener driving tool of this embodiment, a rotatable hook can be provided on the housing 400, and the user can hang the tool on a rack or other position through the hook, and the hook can be rotated to fit the housing 400 when the tool is not needed. In addition, in order to facilitate the user to carry the tool, a shoulder strap buckle can be provided at the front and rear ends of the housing 400, and the shoulder strap can be detachably connected to the shoulder strap buckle, and the user can hang the tool on the body through the shoulder strap.

[0179] As an alternative to the present embodiment, the drive wheel 330 may also adopt other structures, such as providing a plurality of transmission pins distributed along the circumferential direction at intervals on the front end face of the drive wheel 330, and the forward-rotating drive wheel 330 drives the striking member 200 to move upward and return to the top dead center position (TDC) through the cooperation between the transmission pins and the convex teeth 210; or, the drive wheel 330 includes two relatively spaced-apart discs and a transmission pin provided between the two discs, a plurality of transmission pins are distributed along the circumferential direction of the drive wheel 330, and both ends of the transmission pins are fixedly inserted on the two discs respectively, and the forward-rotating drive wheel 330 drives the striking member 200 to move upward and return to the top dead center position (TDC) through the cooperation between the transmission pins and the convex teeth 210.

[0180] Embodiment 2

[0181] Combination Fig.25 , Fig.26 , Fig. 27 In this embodiment, a limiting structure 340 is provided in the reducer to prevent the output shaft from reversing. Specifically, the general structure of the reducer is the same as that in the first embodiment, and will not be described in detail here. The difference is that a ratchet 3135 which rotates synchronously with the secondary planet carrier 3129 and the tertiary sun gear 3131 is provided between the two, and the limiting structure 340 includes a limiting ratchet 341 provided on the inner wall of the secondary gear ring 3130 and a spring piece 342 which biases the limiting ratchet 341 toward the ratchet 3135, and a plurality of limiting ratchet teeth 341 are distributed at circumferential intervals along the secondary gear ring 3130, and the limiting ratchet teeth 341 are hinged to the inner side of the secondary gear ring 3130, and the spring piece 342 is roughly V-shaped and provided between the secondary gear ring 3130 and the limiting ratchet teeth 341, and the spring piece 342 biases the limiting ratchet teeth 341 toward the ratchet 3135, and the ratchet 3135 can only rotate in one direction through the cooperation between the limiting ratchet teeth 341 and the ratchet 3135, so that the tertiary planet carrier and the output shaft can only rotate in one direction.

[0182] The limiting structure 340 is utilized to allow the output shaft to rotate only in one direction. Since the reverse rotation of the output shaft is locked, when the transmission structure is still in the engaged state, the reverse rotation of the drive wheel and the rotating shaft is also locked. Since the drive wheel cannot rotate in the reverse direction, the striking member cannot move downward toward the bottom dead center position, that is, the striking member is also in a locked state, and the striking member can be locked at any position between the top dead center position and the bottom dead center position, thereby avoiding accidental striking of the striking member.

[0183] When the transmission structure is in a disengaged state, the one-way rotation lock of the driving wheel and the rotating shaft is released, and the driving wheel and the rotating shaft can be reversed relative to the output shaft. At this time, the striking member is released and can move toward the bottom dead center position driven by the piston.

[0184] By improving the structure of the reducer, the striking member can move from the upper dead point position to the lower dead point position only when the transmission structure is in the transmission separation state, thereby ensuring the safety of the tool.

[0185] As an optional solution of this embodiment, the secondary planet carrier 3129, the tertiary sun gear 3131 and the ratchet 3135 can be formed as one piece, or can be formed separately and then fixed together.

[0186] As an optional solution of this embodiment, a spring may be used to replace the spring piece 342 .

[0187] As an optional solution of this embodiment, the lock buckle, locking spring and unlocking member described in the first embodiment may be provided, or the lock buckle, locking spring and unlocking member may be eliminated. When the lock buckle is eliminated, the limiting structure 340 is used to lock the output shaft in one direction to lock the striking member in the initial position.

[0188] As an optional solution of this embodiment, the ratchet 3135 can also be arranged on the first-stage planetary carrier or the third-stage planetary carrier or the output shaft, and the limiting structure 340 is arranged corresponding to the ratchet 3135.

[0189] The other structures of the second embodiment are the same as those of the first embodiment and will not be described in detail here.

[0190] Embodiment 3

[0191] Combination Fig.28 In this embodiment, a protrusion 363 protruding outward is provided on the circumference of the unlocking member 360, and the unlocking member 360 adopts a cam structure. When the unlocking member 360 rotates until the protrusion 363 contacts the lock buckle 710, the lock buckle 710 is forced to move from the locked state to the unlocked state. When the protrusion 363 is disengaged from the lock buckle 710, the lock buckle 710 is released by the unlocking member 360, and the locking spring that restores the deformation can drive the released lock buckle 710 to return from the unlocked state to the locked state.

[0192] As an optional solution of this embodiment, the lock buckle 710 can be set to slide or swing.

[0193] As an optional solution of this embodiment, the unlocking member 360 can be arranged on the rotating shaft 320 and formed integrally with the driving wheel 330 , or can be independently arranged and arranged on the rotating shaft 320 or the output shaft 3121 .

[0194] As an optional solution of this embodiment, this embodiment can also set the limiting structure described in the second embodiment in the reducer.

[0195] The other structures of the third embodiment are the same as those of the first embodiment and will not be described in detail here.

[0196] Embodiment 4

[0197] Combination Fig.29 In this embodiment, a protrusion 364 is provided on one end surface of the unlocking member 360, and an oblique push surface cooperating with the protrusion 364 is provided at one end of the lock catch 710. When the unlocking member 360 rotates until the protrusion 364 contacts the oblique push surface, the lock catch 710 is forced to overcome the pre-tightening force of the locking spring and moves from the locked state to the unlocked state. When the protrusion 364 is disengaged from the lock catch 710, the lock catch 710 is released by the unlocking member 360, and the locking spring that restores its deformation can drive the released lock catch 710 to return from the unlocked state to the locked state.

[0198] As an optional solution of this embodiment, the lock buckle 710 can be set to slide or swing.

[0199] As an optional solution of this embodiment, the unlocking member 360 can be arranged on the rotating shaft 320 and formed integrally with the driving wheel 330 , or can be independently arranged and arranged on the rotating shaft 320 or the output shaft 3121 .

[0200] As an optional solution of this embodiment, this embodiment can also set the limiting structure described in the second embodiment in the reducer.

[0201] The other structures of the fourth embodiment are the same as those of the first embodiment and will not be described in detail here.

[0202] Embodiment 5

[0203] Combination Fig.30 , Fig.31 , Fig.32 In this embodiment, the transmission structure 350 includes a driving wheel II 351B driven to rotate by the output shaft 3121 and a driven wheel II 352B arranged on the rotating shaft 320. The outer edge of the driving wheel II 351B is provided with a driving tooth 3511B and a tooth-missing portion 3512B. A plurality of driving teeth 3511B are arranged at intervals along the circumference of the driving wheel II 351B. The tooth-missing portion 3512B is arranged between the first and last driving teeth 3511B. The driven wheel II 352B meshes with the driving tooth 3511B of the driving wheel II 351B to put the transmission structure 350 in an engaged state. The driving wheel II 351B interrupts the meshing with the driven wheel II 352B through the tooth-missing portion 3512B to put the transmission structure 350 in a disengaged state.

[0204] In this embodiment, the driving wheel II 351B is directly sleeved on the output shaft 3121, or the driving wheel II 351B is driven to rotate by the output shaft 3121 through other gears. The driving teeth 3511B on the outer edge of the driving wheel II 351B are continuously spaced along the circumferential direction, and the outer edge of the driving wheel II 351B is not provided with teeth at the position of the tooth-missing portion 3512B, and the outer diameter of the tooth-missing portion 3512B is approximately equal to the minor diameter of the driving teeth 3511B. When the driving wheel II 351B rotates until the tooth-missing portion 3512B corresponds to the driven wheel II 352B, the driving wheel II 351B does not mesh with the driven wheel II 352B, so that the transmission structure 350 switches to the separation state. When the driving wheel II 351B continues to rotate so that the driving teeth 3511B mesh with the driven wheel II 352B again, the transmission structure 350 returns to the engagement state. The rotating shaft 320 and the output shaft 3121 are arranged in parallel and their central axes do not overlap, and the driven wheel II 352B is sleeved on the rotating shaft 320 or is integrally formed with the rotating shaft 320. The unlocking member 360 can be integrally formed with the driving wheel 330, or integrally formed with the driven wheel II 352B, or integrally formed with the rotating shaft 320. The rotating shaft 320, the driving wheel 330, the unlocking member 360 and the driven wheel II 352B can also be integrally formed.

[0205] In the non-nailing state, the lock buckle is inserted into the lock slot 230 to lock the striking member 200 in the initial position, and the plurality of teeth at the lower end of the striking member 200 have not yet engaged with the driving wheel 330 , and the transmission structure 350 is in an engaged state.

[0206] When nailing, the output shaft 3121 drives the driving wheel Ⅱ351B to reverse in the direction indicated by -ω, and the reversed driving wheel Ⅱ351B drives the driven wheel Ⅱ352B to rotate forward in the direction indicated by +ω through engagement, and the forward rotating driven wheel Ⅱ352B drives the driving wheel 330 to rotate forward through the rotating shaft 320, and the unlocking member 360 follows the forward rotation and drives the lock to switch from the locked state to the unlocked state to release the striking member 200, and the forward rotating driving wheel 330 drives the striking member 200 to move upward from the initial position to the top dead center position (TDC). When the striking member 200 moves to the top dead center position (TDC), the driving tooth 3511B on the driving wheel II 351B disengages from the driven wheel II 352B, and the piston drives the striking member 200 to move rapidly from the top dead center position (TDC) to the bottom dead center position (BDC) under the pressure of the high-pressure gas. During the downward movement of the striking member 200, the driving wheel II 351B does not mesh with the driven wheel II 352B, and the transmission structure 350 is in a separated state. The output shaft 3121 cannot transmit power to the driven wheel II 352B through the transmission structure 350, thereby failing to drive the rotating shaft 320 and the driving wheel 330 to rotate forward. At this time, the driven wheel II 352B can be reversed relative to the driving wheel II 351B, so that the driving wheel 330 and the rotating shaft 320 can also be reversed.

[0207] During the downward movement of the striking member 200, the striking member 200 drives the driving wheel 330 to reverse in the direction indicated by -ω. When the striking member 200 moves downward to the bottom dead center position (BDC), the driving wheel II 351B driven by the output shaft 3121 rotates to re-engage with the driven wheel II 352B, and the transmission structure 350 returns to the engaged state. The driving wheel II 351B drives the rotating shaft 320 and the driving wheel 330 to rotate forward in the direction indicated by +ω through the engagement with the driven wheel II 352B. The forward rotating driving wheel 330 drives the striking member 200 and the piston to move upward and return to their original position through the engagement between the transmission tooth 331 and the convex tooth 210. When the striking member 200 returns to the initial position, the lock buckle is inserted into the lock slot 230 to lock the striking member 200 in the initial position.

[0208] As an optional solution of this embodiment, the unlocking member 360 may also be arranged on the output shaft 3121, and the unlocking member 360 may also be integrally formed with the driving wheel II 351B.

[0209] As an optional solution of this embodiment, the fifth embodiment can adopt the lock buckle in the first embodiment to achieve the purpose of locking the striking member 200 in the initial position, and can also adopt the restriction structure in the second embodiment to achieve the purpose of locking the striking member 200 in the initial position, and can also set the lock buckle and the restriction structure at the same time to achieve the purpose of locking the striking member 200 in the initial position. When the lock buckle is cancelled, the setting of the unlocking member is also cancelled.

[0210] The other structures of the fifth embodiment are the same as those of the first embodiment and will not be described in detail here.

[0211] Embodiment 6

[0212] Combination Figure 33 to Figure 36 In this embodiment, the transmission structure 350 includes a driving wheel III351C driven to rotate by the output shaft 3121, an intermediate wheel 352C rotatably arranged through an intermediate shaft 353C, and an elastic member I354C biasing the driving wheel III351C toward the intermediate wheel 352C, the intermediate wheel 352C is meshed with the driving wheel 330, the output shaft 3121, the rotating shaft 320 and the intermediate shaft 353C are arranged in parallel, the driving wheel III351C is movably arranged, the driving wheel III351C biased by the elastic member I354C is meshed with the intermediate wheel 352C to put the transmission structure 350 in an engaged state, and the striking member 200 moving to the top dead center position (TDC) drives the driving wheel III351C to overcome the bias of the elastic member I354C and disengage from the intermediate wheel 352C to put the transmission structure 350 in a disengaged state.

[0213] When the driving wheel III351C biased by the elastic member I354C meshes with the intermediate wheel 352C, the transmission structure 350 is in an engaged state, and the driving wheel III351C driven to rotate by the output shaft 3121 can drive the driving wheel 330 to rotate forward through the intermediate wheel 352C, so that the driving wheel 330 drives the striking member 200 to move upward to return. When the striking member 200 moves to the top dead center position (TDC), the striking member 200 drives the driving wheel III351C to overcome the bias of the elastic member I354C and disengage from the intermediate wheel 352C. At this time, the transmission structure 350 is in a disengaged state, and the driving wheel 330 and the rotating shaft 320 can reverse relative to the output shaft 3121, eliminating the obstruction caused by the driving wheel 330 to the downward movement of the striking member 200, so that the piston can drive the striking member 200 to move smoothly from the top dead center position (TDC) to the bottom dead center position (BDC).

[0214] In this embodiment, the transmission structure 350 includes a transmission head 355C fixed on the output shaft 3121, a slide groove 3551C is provided on the transmission head 355C, a slider 3511C inserted into the slide groove 3551C is provided on the driving wheel III 351C, an elastic member I 354C is provided in the slide groove 3551C and abuts against the slider 3511C, and the elastic member I 354C biases the driving wheel III 351C toward the axis of the output shaft 3121 so that the driving wheel III 351C meshing with the intermediate wheel 352C is arranged concentrically relative to the output shaft 3121, so that the output shaft 3121 can smoothly drive the intermediate wheel 352C to rotate through the driving wheel III 351C. The elastic member I 354C can be a spring, a spring sheet or other elastic member, which is not too limited here.

[0215] The intermediate wheel 352C is arranged at the bottom of the driving wheel III351C and the driving wheel 330. The driving wheel III351C can overcome the bias of the elastic member I354C and disengage from the intermediate wheel 352C upward, so that the transmission structure 350 switches from the engaged state to the disengaged state. Further, the transmission structure 350 also includes a push-up member 356C, which is used to drive the driving wheel III351C to overcome the bias of the elastic member I354C and move upward to disengage from the intermediate wheel 352C. Specifically, the driving wheel III351C is provided with a push-up block 3512C on the side facing away from the driving wheel 330. The push-up member 356C can contact with the push-up block 3512C to push the driving wheel III351C upward away from the intermediate wheel 352C. The push-up block 3512C is connected to the striking member 200 and moves up and down synchronously with the striking member 200.

[0216] When the striking member 200 moves upward to the top dead center (TDC), the output shaft 3121 drives the transmission head 355C to rotate until it is roughly arranged up and down in the extension direction of the slide slot 3551C. At this time, the driving wheel III 351C rotates until the top block 3512C corresponds to the top opening member 356C up and down. The top opening member 356C that moves synchronously with the striking member 200 conflicts with the top block 3512C and drives the driving wheel III 351C to overcome the bias of the elastic member I 354C to move upward and disengage from the intermediate wheel 352C. The transmission structure 350 is in a separated state. At this time, the driving wheel III 351C is eccentrically arranged relative to the output shaft 3121.

[0217] In the non-nailing state, the lock buckle is inserted into the lock slot 230 to lock the striking member 200 in the initial position, and the several teeth at the lower end of the striking member 200 have not yet engaged with the driving wheel 330. The driving wheel III351C is concentrically arranged with the output shaft 3121 under the biasing action of the elastic member I354C, and the driving wheel III351C is engaged with the intermediate wheel 352C, and the transmission structure 350 is in an engaged state.

[0218] When nailing, the output shaft 3121 drives the active wheel III351C to rotate forward in the direction indicated by +ω, the active wheel III351C rotating forward drives the intermediate wheel 352C to rotate reversely in the direction indicated by -ω, the reversed intermediate wheel 352C drives the driving wheel 330 to rotate forward in the direction indicated by +ω, the unlocking member 360 follows the rotation and drives the lock to switch from the locked state to the unlocked state to release the striking member 200, and the driving wheel 330 rotating forward drives the striking member 200 to move upward from the initial position to the top dead center position (TDC). When the striking member 200 moves to the top dead center position (TDC), the push-open member 356C pushes the driving wheel III351C upward away from the intermediate wheel 352C, the driving wheel III351C is eccentric relative to the output shaft 3121, the driving wheel III351C does not mesh with the intermediate wheel 352C, the transmission structure 350 is in a separated state, the output shaft 3121 cannot transmit power to the driving wheel 330 through the transmission structure 350, and the driving wheel 330 and the rotating shaft 320 can be reversed in the direction indicated by -ω.

[0219] During the downward movement of the striking member 200, the striking member 200 drives the driving wheel 330 to reverse in the direction indicated by -ω. Since the striking member 200 moves downward at a very high speed, the striking member 200 reaches the bottom dead center position (BDC) before the driving wheel III 351C re-engages with the intermediate wheel 352C.

[0220] When the striking member 200 moves downward to the bottom dead center (BDC), the driving wheel III 351C returns to the position concentrically arranged with the output shaft 3121 and meshes with the intermediate wheel 352C under the bias of the elastic member I 354C, and the transmission structure 350 returns to the engaged state. The output shaft 3121 drives the driving wheel 330 to rotate forward in the direction indicated by +ω through the transmission structure 350. The forward-rotating driving wheel 330 drives the striking member 200 and the piston to move upward and return to the position through the meshing of the transmission teeth and the convex teeth 210. When the striking member 200 returns to the initial position, the lock buckle is inserted into the lock slot 230 to lock the striking member 200 in the initial position.

[0221] As an optional solution of this embodiment, the unlocking member 360 can be arranged on the rotating shaft 320 and formed integrally with the driving wheel 330 , or the unlocking member 360 can be independently arranged and sleeved on the rotating shaft 320 .

[0222] As an optional solution of this embodiment, the unlocking member 360 may also be arranged on the output shaft 3121 .

[0223] As an optional solution of this embodiment, the sixth embodiment can adopt the lock buckle in the first embodiment to achieve the purpose of locking the striking member 200 in the initial position, and can also adopt the restriction structure in the second embodiment to achieve the purpose of locking the striking member 200 in the initial position, and can also set the lock buckle and the restriction structure at the same time to achieve the purpose of locking the striking member 200 in the initial position. When the lock buckle is cancelled, the setting of the unlocking member is also cancelled.

[0224] As an alternative to the present embodiment, the transmission structure 350 further includes a driven wheel III disposed on the rotating shaft 320, the intermediate wheel 352C meshes with the driven wheel III, the intermediate wheel 352C driven by the driving wheel III 351C drives the driven wheel III to rotate, and the driven wheel III drives the driving wheel 330 to rotate synchronously via the rotating shaft 320.

[0225] The other structures of the sixth embodiment are the same as those of the first embodiment and will not be described in detail here.

[0226] Embodiment 7

[0227] Combination Fig.37 , Fig.38 , Fig.39The transmission structure 350 includes a driving wheel IV351D driven to rotate by the output shaft 3121, a transmission member 352D radially movable on the driving wheel IV351D, a clutch frame 353D disposed between the driving wheel IV351D and the driving wheel 330, a transmission groove 354D disposed on the driving wheel 330, and an elastic member II355D biasing the transmission member 352D toward the transmission groove 354D. The transmission member 352D biased by the elastic member II355D is embedded in the transmission groove 354D to put the transmission structure 350 in an engaged state. The clutch frame 353D is provided with a protrusion 3531D to enable the transmission member 352D to overcome the bias of the elastic member II355D and disengage from the transmission groove 354D. The transmission member 352D disengages from the transmission groove 354D to put the transmission structure 350 in a disengaged state.

[0228] When the transmission member 352D is embedded in the transmission groove 354D under the bias of the elastic member II 355D, the transmission structure 350 is in an engaged state, and the output shaft 3121 can drive the driving wheel 330 to rotate forward in the direction indicated by +ω through the transmission structure 350, so that the driving wheel 330 can drive the striking member 200 to move upward to return. When the transmission member 352D overcomes the bias of the elastic member II 355D under the action of the protrusion 3531D and disengages from the transmission groove 354D, the transmission structure 350 is in a disengaged state, and at this time, the driving wheel 330 can reverse relative to the output shaft 3121.

[0229] In this embodiment, the driving wheel IV351D is sleeved on the output shaft 3121, and the driving wheel IV351D is provided with a groove extending along a certain radial direction on the side facing the clutch frame 353D. The driving wheel 330 is also provided with a groove extending along a certain radial direction on the side facing the clutch frame 353D. The grooves on the driving wheel IV351D and the driving wheel 330 are combined to form a receiving groove for accommodating the transmission member 352D and the elastic member II355D, and the transmission member 352D and the elastic member II355D are arranged in the receiving groove. The clutch frame 353D is fixedly arranged and located between the driving wheel IV351D and the driving wheel 330. The clutch frame 353D is in a flat ring shape. The protrusion 3531D protrudes from the inner ring surface of the clutch frame 353D toward the center. The transmission member 352D and the elastic member II355D are arranged on the inner periphery of the clutch frame 353D. The protrusion 3531D is provided with a pressing surface 3532D, and the pressing surface 3532D can be arranged parallel to a certain radial direction of the clutch frame 353D. The elastic member II 355D biases the transmission member 352D toward the transmission groove 354D. The transmission member 352D is embedded in the transmission groove 354D under the bias of the elastic member II 355D. The transmission structure 350 is in an engaged state. The active wheel IV 351D driven to rotate by the output shaft 3121 drives the driving wheel 330 to rotate forward in the direction indicated by +ω through the cooperation between the transmission member 352D and the transmission groove 354D. The forward rotating driving wheel 330 can drive the striking member 200 to move upward. When the driving wheel IV351D drives the transmission member 352D and the elastic member II355D to rotate until the pressing surface 3532D of the protrusion 3531D contacts, the transmission member 352D overcomes the bias of the elastic member II355D under the action of the pressing surface 3532D and moves toward the center of the driving wheel IV351D, so that the transmission member 352D is separated from the transmission groove 354D on the driving wheel 330. At this time, the driving wheel IV351D can no longer drive the driving wheel 330 to rotate through the cooperation of the transmission member 352D and the transmission groove 354D, and the transmission structure 350 is in a separated state, and the driving wheel 330 can be reversed relative to the driving wheel IV351D. As a feasible solution of this embodiment, the transmission member 352D can be set to a reasonable structure such as a sphere, a cone or a column. As a feasible solution of this embodiment, the elastic member II355D can be a spring, a spring sheet or other elastic member.

[0230] In the non-nailing state, the lock buckle is inserted into the lock slot 230 to lock the striking member 200 in the initial position, the several teeth at the lower end of the striking member 200 have not yet engaged with the driving wheel 330, the transmission member 352D cooperates with the transmission slot 354D, and the transmission structure 350 is in an engaged state.

[0231] When nailing, the output shaft 3121 drives the active wheel IV351D to rotate forward in the direction indicated by +ω, and the active wheel IV351D that rotates forward drives the driving wheel 330 to rotate forward in the direction indicated by +ω through the cooperation between the transmission member 352D and the transmission groove 354D, and the unlocking member 360 follows the rotation and drives the lock to switch from the locked state to the unlocked state to release the striking member 200, and the driving wheel 330 that rotates forward drives the striking member 200 to move upward from the initial position to the top dead center position (TDC). When the striking member 200 moves to the top dead center position (TDC), the transmission member 352D overcomes the bias of the elastic member II 355D under the resistance of the pressing surface 3532D, moves toward the center of the driving wheel IV 351D and disengages from the transmission groove 354D, the transmission structure 350 is in a separated state, the output shaft 3121 cannot transmit power to the driving wheel 330 through the transmission structure 350, and the driving wheel 330 and the rotating shaft 320 can be reversed in the direction indicated by -ω.

[0232] During the downward movement of the striking member 200, the striking member 200 drives the driving wheel 330 to reverse in the direction indicated by -ω. When the striking member 200 moves downward to the bottom dead center position (BDC), the transmission member 352D disengages from the protrusion 3531D. When the driving wheel IV351D and the driving wheel 330 rotate until the transmission member 352D and the transmission groove 354D are re-aligned, the transmission member 352D is re-embedded in the transmission groove 354D under the bias of the elastic member II355D, and the transmission structure 350 is restored to the engaged state. The driving wheel IV351D that is rotating forward drives the driving wheel 330 to rotate forward in the direction indicated by +ω through the cooperation between the transmission member 352D and the transmission groove 354D. The driving wheel 330 that is rotating forward drives the striking member 200 and the piston to move upward and return to their original position through the meshing of the transmission teeth and the protruding teeth. When the striking member 200 returns to the initial position, the lock buckle is inserted into the lock groove 230 to lock the striking member 200 in the initial position.

[0233] As an optional solution of this embodiment, the unlocking member 360 can be arranged on the output shaft 3121 and formed integrally with the driving wheel IV351D, or it can be independently arranged and sleeved on the output shaft 3121. The unlocking member 360, the driving wheel IV351D and the output shaft 3121 can be formed integrally.

[0234] As an alternative to this embodiment, the driving wheel IV351D can be driven to rotate by the output shaft 3121 through other gears.

[0235] As an alternative to the present embodiment, the transmission structure 350 further includes a driven wheel IV coaxially arranged with the driving wheel 330, the driven wheel IV is arranged on the rotating shaft 320, the clutch frame 353D is arranged between the driving wheel IV 351D and the driven wheel IV, the transmission groove 354D is arranged on the driven wheel IV, the driving wheel IV 351D can drive the driven wheel IV to rotate forwardly through the cooperation of the transmission member 352D and the transmission groove 354D, and the forwardly rotating driven wheel IV drives the driving wheel 330 to rotate forward synchronously through the rotating shaft 320.

[0236] As an optional solution of this embodiment, the seventh embodiment can adopt the lock buckle in the first embodiment to lock the striking member 200 in the initial position, or adopt the restriction structure in the second embodiment to lock the striking member 200 in the initial position, or can also set the lock buckle and the restriction structure at the same time to lock the striking member 200 in the initial position. When the lock buckle is cancelled, the setting of the unlocking member is cancelled at the same time.

[0237] The other structures of the seventh embodiment are the same as those of the first embodiment and will not be described in detail here.

[0238] Embodiment 8

[0239] Combination Figures 40 to 44 The transmission structure 350 includes a driving wheel V351E driven to rotate by the output shaft 3121, a driven wheel V352E rotating synchronously with the driving wheel 330, an elastic member III353E biasing the driving wheel V351E toward the driven wheel V352E, a shift fork 354E cooperating with the driving wheel V351E, and a shift block 355E used to drive the shift fork 354E to slide axially. The driving wheel V351E biased by the elastic member III353E cooperates with the driven wheel V352E to put the transmission structure 350 in an engaged state. The shift block 355E rotating with the output shaft 3121 drives the driving wheel V351E through the shift fork 354E to overcome the bias of the elastic member III353E and disengage from the driven wheel V352E to put the transmission structure 350 in a disengaged state.

[0240] When the driving wheel V351E is in a state of cooperation with the driven wheel V352E under the bias of the elastic member III353E, the transmission structure 350 is in an engaged state, and the output shaft 3121 can drive the driving wheel 330 to rotate forward through the driving wheel V351E and the driven wheel V352E, and the driving wheel 330 that rotates forward can drive the striking member 200 to move upward to return. When the shift block 355E drives the shift fork 354E to move away from the driven wheel V352E, the shift fork 354E drives the driving wheel V351E to slide synchronously so that the driving wheel V351E is separated from the driven wheel V352E, and the transmission structure 350 is in a separated state. At this time, the driving wheel 330 can reverse relative to the driving wheel V351E.

[0241] In this embodiment, the transmission structure 350 also includes a transmission shaft 356E that is transmission-connected to the output shaft 3121 through a coupling sleeve 357E. The driving wheel V351E is sleeved on the transmission shaft 356E through a non-circular shaft hole matching structure or a spline matching structure, so that the driving wheel V351E can slide axially relative to the transmission shaft 356E. The driven wheel V352E and the driving wheel 330 are both sleeved on the transmission shaft 356E through a clearance fit. The driven wheel V352E and the driving wheel 330 can both rotate circumferentially relative to the transmission shaft 356E. The driven wheel V352E and the driving wheel 330 can be integrally formed, or they can be separately formed and then fixed together. As an alternative to this embodiment, the transmission shaft 356E can also be integrally formed with the output shaft 3121.

[0242] The transmission shaft 356E is provided with a disc body 3561E located at the rear end of the driving wheel V351E, and the shift block 355E is provided on the side of the disc body 3561E facing away from the driving wheel V351E. The shift block 355E, the disc body 3561E and the transmission shaft 356E can be formed in one piece. The rear end of the shift fork 354E is provided with a column rod 3541E that cooperates with the shift block 355E, and the front end of the shift fork 354E is provided with a U-shaped fork rod 3542E. The outer peripheral surface of the driving wheel V351E is provided with an annular groove 3521E, and a part of the fork rod 3542E is always embedded in the annular groove 3521E. The shift fork 354E cooperates with the driving wheel V351E through the cooperation of the fork rod 3542E and the annular groove 3521E.

[0243] The driving wheel V351E and the driven wheel V352E are respectively provided with engaging teeth 3581E and engaging grooves 3582E distributed in the circumferential direction on the facing end faces. The engaging teeth 3581E are embedded in the engaging grooves 3582E to make the driving wheel V351E engage with the driven wheel V352E, and the engaging teeth 3581E are disengaged from the engaging grooves 3582E to make the driving wheel V351E disengage from the driven wheel V352E.

[0244] The elastic member III353E is disposed between the disc body 3561E and the driving wheel V351E, and the elastic member III353E may be a spring, a spring sheet or other elastic member. When the elastic member III353E is a spring, the elastic member III353E may be sleeved on the outside of the transmission shaft 356E, the rear end of the elastic member III353E contacts the disc body 3561E to achieve positioning, and the front end of the elastic member III353E contacts the driving wheel V351E to bias the driving wheel V351E toward the driven wheel V352E.

[0245] Under the bias of the elastic member III353E, the driving wheel V351E makes the engaging tooth 3581E embed into the engaging groove 3582E, and the transmission structure 350 is in an engaged state. The transmission shaft 356E driven by the output shaft 3121 drives the driving wheel 330 to rotate forward in the direction indicated by +ω through the driving wheel V351E and the driven wheel V352E. The driving wheel 330 that rotates forward can drive the striking member 200 to move upward to return.

[0246] The shift block 355E is provided with a shift surface 3551E which is axially inclined relative to the transmission shaft 356E. The transmission shaft 356E drives the shift block 355E to rotate synchronously. When the shift block 355E rotates until the column rod 3541E contacts the shift surface 3551E, the shift block 355E drives the shift fork 354E to move backward. The shift fork 354E moving backward drives the driving wheel V351E to overcome the bias of the elastic member III353E and slide backward relative to the transmission shaft 356E. The driving wheel V351E sliding backward is disengaged from the driven wheel V352E, and the transmission structure 350 is in a separated state. The driving wheel 330 and the driven wheel V352E can be reversed relative to the driving wheel V351E.

[0247] In the non-nailing state, the lock buckle is inserted into the lock slot 230 to lock the striking member 200 in the initial position, the several teeth at the lower end of the striking member 200 have not yet engaged with the driving wheel 330, the driving wheel V351E is engaged with the driven wheel V352E, and the transmission structure 350 is in an engaged state.

[0248] When nailing, the output shaft 3121 drives the driving wheel V351E to rotate forward in the direction indicated by +ω through the transmission shaft 356E. The forward rotating driving wheel V351E drives the driven wheel V352E to rotate forward in the direction indicated by +ω through the engagement of the engagement tooth 3581E and the engagement groove 3582E. The driven wheel V352E drives the driving wheel 330 to rotate forward synchronously. The unlocking member 360 follows the rotation and drives the lock to switch from the locked state to the unlocked state to release the striking member 200. The forward rotating driving wheel 330 drives the striking member 200 to move upward from the initial position to the top dead center position (TDC).

[0249] When the striking member 200 moves to the top dead center position (TDC), the shift fork 354E drives the driving wheel V351E to slide backward under the interference of the column rod 3541E and the shift surface 3551E, overcoming the bias of the elastic member III353E, so that the driving wheel V351E is disengaged from the driven wheel V352E, the transmission structure 350 is in a separated state, the output shaft 3121 cannot transmit power to the driving wheel 330 through the transmission structure 350, and the driving wheel 330 can reverse in the direction indicated by -ω.

[0250] During the downward movement of the striking member 200, the striking member 200 drives the driving wheel 330 to reverse in the direction indicated by -ω. When the striking member 200 moves downward to the bottom dead center position (BDC), the column rod 3541E disengages from the shifting block 355E, and when the driving wheel V351E and the driven wheel V352E rotate until the engaging tooth 3581E and the engaging groove 3582E are re-aligned, the driving wheel V351E slides forward under the bias of the elastic member III353E and the engaging tooth 3581E is re-embedded in the engaging groove 3582E, and the transmission structure 350 is restored to the engaged state, and the forward-rotating transmission shaft 356E drives the driving wheel 330 to rotate forward in the direction indicated by +ω through the driving wheel V351E and the driven wheel V352E, and the forward-rotating driving wheel 330 drives the striking member 200 and the piston to move upward and return to the position through the meshing of the transmission teeth and the convex teeth. When the striking member 200 returns to the initial position, the lock buckle is inserted into the lock slot 230 to lock the striking member 200 at the initial position.

[0251] As an optional solution of this embodiment, the unlocking member 360, the driving wheel 330 and the driven wheel V352E can be formed as one piece, or can be formed separately and then fixed together.

[0252] As an optional solution of this embodiment, the eighth embodiment can adopt the lock buckle in the first embodiment to achieve the purpose of locking the striking member 200 in the initial position, and can also adopt the restriction structure in the second embodiment to achieve the purpose of locking the striking member 200 in the initial position, and can also set the lock buckle and the restriction structure at the same time to achieve the purpose of locking the striking member 200 in the initial position. When the lock buckle is cancelled, the setting of the unlocking member is also cancelled.

[0253] The other structures of the eighth embodiment are the same as those of the first embodiment and will not be described in detail here.

[0254] Embodiment 9

[0255] Combination Fig.45 , Fig.46 , Fig.47In this embodiment, the reducer 312 adopts a two-stage, three-stage or four-stage planetary gear reduction structure. The reducer 312 has a final sun gear 312a, a final planetary gear 312b, and a final inner gear ring 312c. Two, three or four final planetary gears 312b are arranged at intervals along the outer periphery of the final sun gear 312a. Each final planetary gear 312b is meshed with the final sun gear 312a and the final inner gear ring 312c at the same time. The final inner gear ring 312c is rotatably arranged in the front end of the reducer 312. The driving wheel 330 can be connected to each final planetary gear 312b through a planet carrier. At this time, the shaft used to support each final planetary gear 312b is fixed to the planet carrier, the rear end of the output shaft 3121 is fixed to the planet carrier, and the driving wheel 330 is sleeved on the output shaft 3121. The driving wheel 330 may also be directly connected to each final-stage planetary gear 312 b . In this case, the shaft for supporting each final-stage planetary gear 312 b is directly fixed to the driving wheel 330 .

[0256] A limiting groove 3121c is provided on the outer circumference of the final inner gear ring 312c, and the lock buckle 710 is used not only to lock the striking member 200 in the initial position, but also to lock the final inner gear ring 312c. In this embodiment, the striking member 200 is provided with an unlocking inclined surface 240 inclined relative to the side surface of the striking member 200 at the bottom side of the locking groove 230, and the unlocking inclined surface 240 is used to switch the lock buckle 710 from the locked state to the unlocked state.

[0257] In the non-nailing state, the lock buckle 710 is inserted into the lock groove 230 to lock the striking member 200 in the initial position, and the several teeth at the lower end of the striking member 200 have not yet engaged with the driving wheel 330. At the same time, a part of the lock buckle 710 is inserted into the limiting groove 3121c in the final inner gear ring 312c so that the final inner gear ring 312c is circumferentially limited.

[0258] When nailing, the output shaft 3121 drives the driving wheel 330 to rotate forward in the direction indicated by +ω, and the driving wheel 330 that rotates forward drives the striking member 200 to move upward, and the striking member 200 that moves upward switches the lock buckle 710 from the locked state to the unlocked state through the unlocking inclined surface 240. When the striking member 200 moves to the top dead center position (TDC), the lock buckle 710 completely disengages from the limiting groove 3121c, the final inner gear ring 312c is unlocked, and the final inner gear ring 312c is in a rotatable state. At this time, the motor stops working, the final sun gear 312a is in a stationary state, the final inner gear ring 312c and the final planetary gear 312b are in a rotatable state, and the piston drives the striking member 200 to move from the top dead center position (TDC) to the bottom dead center position (BDC) under the pressure of the high-pressure gas. The downward moving striking member 200 drives the driving wheel 330 to reverse in the direction indicated by -ω, and the reversed driving wheel 330 drives each final planetary gear 312b to revolve in the direction indicated by -ω through the output shaft 3121. At the same time, each final planetary gear 312b also rotates, and the final inner gear ring 312c can also rotate under the drive of the final planetary gear 312b, and the final sun gear 312a remains stationary, preventing the reverse rotation of the driving wheel 330 from continuing to be transmitted backward.

[0259] When the final inner gear ring 312c rotates to the limit groove 3121c and re-aligns with the lock buckle 710, the lock buckle 710 is first inserted into the limit groove 3121c to stop the final inner gear ring 312c from rotating, and then the motor is started, the final sun gear 312a is driven to rotate, and the final sun gear 312a drives the output shaft 3121 to rotate forward along the direction indicated by +ω through the final planetary gear 312b and the final planetary carrier, and the output shaft 3121 drives the driving wheel 330 to rotate forward synchronously, and the forward rotating driving wheel 330 drives the striking member 200 to move upward. When the striking member 200 moves upward to the initial position, the motor stops, and the lock buckle 710 switches to the locked state and locks the striking member 200 in the initial position.

[0260] The other structures of the ninth embodiment are the same as those of the first embodiment and will not be described in detail here.

[0261] In addition to the above preferred embodiments, the present invention has other implementation modes. Those skilled in the art can make various changes and modifications based on the present invention. As long as they do not deviate from the spirit of the present invention, they should all fall within the scope defined in the claims of the present invention.

Claims

1. Fastener driving tool, including: The energy storage assembly comprises a cylinder structure provided with an energy storage chamber and a piston arranged in the cylinder structure, wherein the energy storage chamber contains an energy storage medium, and the moving piston changes the volume of the energy storage chamber to change the pressure of the energy storage medium; A striking member connected to the piston, the piston drives the striking member to move from the top dead center position to the bottom dead center position so that the striking member drives the fastener into the workpiece; A driving assembly, including a power member and a driving wheel, wherein the power member drives the striking member and the piston to move upward from the bottom dead center position through the driving wheel; The invention is characterized in that the power member is provided with an output shaft, the driving wheel cooperates with the striking member, the driving assembly is provided with a transmission structure, and the transmission structure has an engaged state and a disengaged state; The output shaft transmits power to the driving wheel through the transmission structure in the engaged state and causes the driving wheel to rotate forward, so that the driving wheel that rotates forward drives the striking member and the piston to move upward from the bottom dead center position; The transmission structure is in a separated state when the piston drives the striking member to move from the top dead center position to the bottom dead center position. The transmission structure in the separated state interrupts the transmission of power of the output shaft to the drive wheel, so that the drive wheel matched with the striking member can be driven to reverse by the striking member moving downward.

2. The fastener driving tool according to claim 1, characterized in that: The driving assembly also includes a rotating shaft, a driving wheel is arranged on the rotating shaft and the two rotate synchronously, and a transmission structure is arranged between the output shaft and the rotating shaft or between the output shaft and the driving wheel.

3. The fastener driving tool according to claim 2, characterized in that: The transmission structure includes a driving wheel I driven to rotate by an output shaft and a driven wheel I arranged on the rotating shaft. One of the driving wheel I and the driven wheel I is provided with a movable transmission ratchet and the other is provided with a transmission ratchet groove. The transmission ratchet is embedded in the transmission ratchet groove so that the driving wheel I and the driven wheel I are in an engaged state, and the transmission ratchet is disengaged from the transmission ratchet groove so that the driving wheel I and the driven wheel I are in a separated state.

4. The fastener driving tool according to claim 3, characterized in that: The transmission structure also includes a transmission spring that biases the transmission ratchet toward the transmission ratchet groove, and the transmission spring is deformed by force when the transmission ratchet is separated from the transmission ratchet groove.

5. The fastener driving tool according to claim 3, characterized in that: The driving wheel I is provided with a concave cavity on the side facing the driven wheel I, the driven wheel I is accommodated in the concave cavity, the transmission ratchet groove is provided on the side wall of the concave cavity, the transmission ratchet is movably provided on the driven wheel I, and the transmission ratchet disengaged from the transmission ratchet groove abuts against the cavity wall of the concave cavity.

6. The fastener driving tool according to claim 3, characterized in that: The fastener driving tool further comprises a fixed positioning rod, and a transmission ratchet in contact with the positioning rod overcomes the bias of a transmission spring and disengages from a transmission ratchet groove; and / or, the output shaft is arranged concentrically with the rotating shaft.

7. The fastener driving tool according to claim 2, characterized in that: The transmission structure includes a driving wheel II driven to rotate by an output shaft and a driven wheel II arranged on the rotating shaft. The outer edge of the driving wheel II is provided with driving teeth and a tooth-missing portion. A plurality of driving teeth are arranged at intervals along the circumference of the driving wheel II. The tooth-missing portion is arranged between the first and last driving teeth. The driven wheel II is meshed with the driving teeth of the driving wheel II to put the transmission structure in an engaged state. The driving wheel II interrupts the meshing with the driven wheel II through the tooth-missing portion to put the transmission structure in a disengaged state.

8. The fastener driving tool according to claim 2, characterized in that: The transmission structure comprises a driving wheel III driven to rotate by the output shaft, an intermediate wheel rotatably arranged through an intermediate shaft, an elastic member I biasing the driving wheel III toward the intermediate wheel, the intermediate wheel meshing with the driving wheel, the output shaft, the rotating shaft and the intermediate shaft being arranged in parallel, the driving wheel III being movably arranged, the driving wheel III biased by the elastic member I meshing with the intermediate wheel so that the transmission structure is in an engaged state, and the striking member moving to the top dead center position drives the driving wheel III to overcome the bias of the elastic member I and disengage from the intermediate wheel so that the transmission structure is in a disengaged state; Alternatively, the transmission structure includes a driving wheel III driven to rotate by the output shaft, an intermediate wheel rotatably arranged through an intermediate shaft, an elastic member I biasing the driving wheel III toward the intermediate wheel, and a driven wheel III arranged on the rotating shaft, the intermediate wheel meshing with the driven wheel III, the output shaft, the rotating shaft and the intermediate shaft are arranged in parallel, the driving wheel III is movably arranged, the driving wheel III biased by the elastic member I meshes with the intermediate wheel to put the transmission structure in an engaged state, and the striking member moving to the top dead center position drives the driving wheel III to overcome the bias of the elastic member I and disengage from the intermediate wheel to put the transmission structure in a disengaged state.

9. The fastener driving tool according to claim 8, characterized in that: The driving wheel III meshing with the intermediate wheel is arranged concentrically with respect to the output shaft, and the driving wheel III disengaged from the intermediate wheel is arranged eccentrically with respect to the output shaft.

10. The fastener driving tool according to claim 9, characterized in that: The output shaft is provided with a slide groove, and the driving wheel III is provided with a slider inserted into the slide groove. The elastic member I is arranged in the slide groove and abuts against the slider. The elastic member I biases the driving wheel III toward the axis of the output shaft so that the driving wheel III meshing with the intermediate wheel is arranged concentrically relative to the output shaft.

11. The fastener driving tool according to claim 9, characterized in that: The intermediate wheel is arranged at the bottom of the driving wheel III, and the striking member is provided with a push-opening member for driving the driving wheel III to overcome the bias of the elastic member I and to be separated from the intermediate wheel upward.

12. The fastener driving tool according to claim 1, characterized in that: The transmission structure comprises a driving wheel IV driven to rotate by an output shaft, a transmission member disposed on the driving wheel IV and movable in a radial direction, a clutch frame disposed between the driving wheel IV and the driving wheel, a transmission groove disposed on the driving wheel, an elastic member II biasing the transmission member toward the transmission groove, the transmission member biased by the elastic member II is embedded in the transmission groove so that the transmission structure is in an engaged state, a convex block is disposed on the clutch frame so that the transmission member overcomes the bias of the elastic member II and disengages from the transmission groove, and the transmission member disengages from the transmission groove so that the transmission structure is in a disengaged state; Alternatively, the transmission structure includes a driving wheel IV driven to rotate by an output shaft, a transmission member radially movable on the driving wheel IV, a driven wheel IV rotating synchronously with the driving wheel, a clutch frame arranged between the driving wheel IV and the driven wheel IV, a transmission groove arranged on the driven wheel IV, an elastic member II biasing the transmission member toward the transmission groove, the transmission member biased by the elastic member II is embedded in the transmission groove so that the transmission structure is in an engaged state, and a protrusion is provided on the clutch frame to enable the transmission member to overcome the bias of the elastic member II and disengage from the transmission groove, and the transmission member disengages from the transmission groove so that the transmission structure is in a disengaged state.

13. The fastener driving tool according to claim 12, characterized in that: The protrusion has a pressing surface, and the transmission member in contact with the pressing surface overcomes the bias of the elastic member II and moves toward the direction of leaving the transmission groove. The transmission member leaving the protrusion is re-embedded in the transmission groove under the bias of the elastic member II.

14. The fastener driving tool according to claim 1, characterized in that: The transmission structure includes a driving wheel V driven to rotate by an output shaft, a driven wheel V rotating synchronously with the driving wheel, an elastic member III biasing the driving wheel V toward the driven wheel V, a shift fork cooperating with the driving wheel V, and a shift block used to drive the shift fork to slide axially. The driving wheel V biased by the elastic member III cooperates with the driven wheel V to put the transmission structure in an engaged state. The shift block rotating with the output shaft drives the driving wheel V through the shift fork to overcome the bias of the elastic member III and disengage from the driven wheel V to put the transmission structure in a disengaged state.

15. The fastener driving tool according to claim 14, characterized in that: The transmission structure comprises a transmission shaft which is transmission-connected to the output shaft, a driving wheel V and a shifting block are arranged on the transmission shaft and rotate synchronously with the transmission shaft, and a driven wheel V and a driving wheel are rotatably sleeved on the output shaft.

16. The fastener driving tool according to claim 14, characterized in that: The shift block is provided with a shift surface. The rotating shift block causes the shift fork to drive the driving wheel V to overcome the bias of the elastic member III and move in the direction of disengaging from the driven wheel V through the contact between the shift surface and the shift fork. The shift fork disengaged from the shift block causes the driving wheel V to re-match with the driving wheel V under the bias of the elastic member III.

17. The fastener driving tool according to claim 15, characterized in that: The transmission shaft is provided with a disc body, the shifting block is arranged on the side of the disc body facing away from the driving wheel V, the elastic member III is arranged between the disc body and the driving wheel V, and the two ends of the elastic member III respectively abut against the disc body and the driving wheel V.

18. The fastener driving tool according to claim 15, characterized in that: The driving wheel V and the driven wheel V are respectively provided with engaging teeth and engaging grooves spaced along the circumferential direction on the facing end faces, the engaging teeth are embedded in the engaging grooves so that the driving wheel V and the driven wheel V are engaged, and the engaging teeth are disengaged from the engaging grooves so that the driving wheel V and the driven wheel V are disengaged; and / or, an annular groove is provided on the outer circumferential surface of the driving wheel V, and one end of the fork is provided with a fork rod embedded in the annular groove.

19. The fastener driving tool according to claim 1, characterized in that: The fastener driving tool also includes a lock buckle having a locked state and an unlocked state. The lock buckle in the locked state cooperates with the striking piece to lock the striking piece, and the lock buckle in the unlocked state is separated from the striking piece to release the striking piece.

20. The fastener driving tool according to claim 18, wherein: The driving assembly includes an unlocking member that rotates with the output shaft or the driving wheel, and the unlocking member is used to drive the lock to switch from a locked state to an unlocked state so that the striking member is released by the lock.

21. The fastener driving tool according to claim 20, characterized in that The outer peripheral surface of the unlocking member includes an arcuate surface and an avoidance surface provided between two ends of the arcuate surface, the center of the arcuate surface coincides with the rotation center line of the unlocking member and has a radius of R, the distance between the avoidance surface and the rotation center line of the unlocking member is less than R, the rotating unlocking member switches the lock buckle to the unlocked state and maintains it through the interference between the arcuate surface and the lock buckle, and the rotating unlocking member releases the lock buckle through the avoidance surface so that the lock buckle can return to the locked state; Alternatively, a protrusion protruding outward is provided on the circumference of the unlocking member, and the rotating unlocking member switches the lock buckle from the locked state to the unlocked state through the interference between the protrusion and the lock buckle, and the rotating unlocking member causes the protrusion to separate from the lock buckle to release the lock buckle; Alternatively, a protrusion is provided on the end surface of the unlocking member, and the rotating unlocking member switches the lock buckle from a locked state to an unlocked state through the interference between the protrusion and the lock buckle, and the rotating unlocking member causes the protrusion to disengage from the lock buckle to release the lock buckle.

22. The fastener driving tool according to claim 19, characterized in that The fastener driving tool also includes a locking spring that biases the lock toward the striking member. The locking spring is configured to be deformed by force when the lock is switched from a locked state to an unlocked state, and to drive the lock released by the unlocking member to return from the unlocked state to the locked state when the striking member returns to its position.

23. The fastener driving tool according to claim 19, characterized in that The fastener driving tool also includes a locking switch that is positioned, and the lock buckle that returns to the locked state triggers the locking switch.

24. The fastener driving tool according to claim 19, wherein: The striking member has an initial position between the upper dead center position and the lower dead center position. The lock cooperates with the striking member to lock the striking member in the initial position. The transmission structure is in an engaged state during the process of the striking member moving upward from the lower dead center position to the initial position and during the process of the striking member moving upward from the initial position to the upper dead center position.

25. The fastener driving tool according to claim 1, characterized in that The power part comprises a motor and a reducer, the output shaft is arranged on the reducer, and a limiting structure for keeping the output shaft rotating in one direction is arranged inside the reducer.

26. The fastener driving tool according to claim 1, characterized in that The fastener driving tool also includes a magnetic induction member positioned and arranged, and a magnet for triggering the magnetic induction member is arranged on the striking member or the driving wheel, and the power member brakes or decelerates according to the signal of the magnetic induction member being triggered by the magnet.

27. The fastener driving tool according to claim 1, characterized in that The fastener driving tool also includes a safety switch, a push rod for triggering the safety switch, and a stopper for limiting the push rod, wherein the stopper prevents the push rod from triggering the safety switch when the number of fasteners to be struck is reduced to a warning number.

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