CN211565764U - Control mechanism of nail gun - Google Patents
Control mechanism of nail gun Download PDFInfo
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- CN211565764U CN211565764U CN201922486372.0U CN201922486372U CN211565764U CN 211565764 U CN211565764 U CN 211565764U CN 201922486372 U CN201922486372 U CN 201922486372U CN 211565764 U CN211565764 U CN 211565764U
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- nail gun
- piston
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- shifting block
- switch
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Abstract
The utility model belongs to the technical field of nail gun, refer in particular to a control mechanism of nail gun, including the rifle body, the internal removal of rifle is equipped with the piston, is connected with on the piston and penetrates nail mechanism, still includes actuating lever and lockpin, installs first micro-gap switch and shifting block on the rifle body, and the shifting block includes trigger end and stirs the end, and the trigger end extends to the rifle internal portion, stirs the end and connects first micro-gap switch, has seted up the locked groove on the shifting block, and the lockpin tip can stretch into the locked groove and prevent the shifting block to rotate; the front end of the driving rod is also provided with a touch piece extending to the front end of the gun body. The utility model discloses when using, the internal portion of rifle's piston can stretch into the trigger end of the internal portion of rifle to the shifting block and produce thrust in the motion process that triggers the nailing, and when the trigger end was promoted, can make to dial the end and remove, makes first micro-gap switch open, can automatic disconnection power this moment, plays better guard action, avoids the user to receive the unnecessary injury, improves the security performance.
Description
Technical Field
The utility model belongs to the technical field of nail rifle, refer in particular to a control mechanism of nail rifle.
Background
The existing nail gun can be divided into a pneumatic nail gun and an electric nail gun according to different functional modes, the gun body part of the nail gun mainly comprises a gun body, a cylinder, a balance valve, a switch assembly, a firing pin assembly (a gun tongue), a buffer cushion, a gun nozzle, a gun groove and the like, and the firing pin (a piston) is made to reciprocate in the cylinder by utilizing the pressure difference between compressed air and atmosphere through a trigger switch; the bullet clamp portion dress comprises accessories such as rifle head, rifle lid, fixed cartridge clip, activity cartridge clip, sends the nail to the rifle lid inslot through pressure spring or extension spring, when the firing pin comes out from the rifle mouth, beats out the nail to accomplish the nailing process, current nail gun need connect the power and provide the energy at the nailing in-process, and its switch generally sets up on hand, presses the switch on hand and can switch on the power and carry out work. Most of the existing nail guns lack a protection device, if a power supply is always connected in the working process, the nail is difficult to control out after being nailed, if a switch is always pressed, the nail gun is easily in the nail out state, and certain potential safety hazards exist.
The chinese utility model patent CN208867117U discloses a nail gun, which comprises a nail gun body, a power supply connector of the nail gun is reserved at the bottom end of the nail gun body, a nail gun safety switch is fixedly arranged on the right side of the nail gun body, the upper end of the nail gun safety switch is fixedly provided with a nail gun working switch, the top end of the nail gun body is fixedly provided with a nailing device, the left side of the nailing device is movably provided with a buffer spring, the right side of the nailing device is fixedly provided with an electromagnetic coil, a nail striking iron core is arranged in the electromagnetic coil, a nail striking firing pin is fixedly arranged at the right end of the nail striking iron core, the right end of the nailing device is provided with a nail gun muzzle, the lower end of the nail gun muzzle is fixedly provided with a muzzle cover, the inner side of the gun nozzle cover is fixedly provided with a safety switch, and the right end of the safety switch is fixedly provided with a safety switch button. Above-mentioned utility model has set up the safety switch on the rifle body, though can play certain protection effect, but this switch is direct mount on the handle of the rifle body, needs press this switch through the staff and just can be closed this switch, also needs operator press the switch to open simultaneously, and is more inconvenient.
Disclosure of Invention
The utility model aims at providing a thereby be used for power actuated setting device, thereby the internal piston of rifle can control opening of first micro-gap switch in the motion process and break off power supply, and the reliability is high, long service life's control mechanism.
The purpose of the utility model is realized like this:
a control mechanism of a nail gun comprises a gun body, wherein a piston is arranged in the gun body, a nail shooting mechanism is connected onto the piston, the control mechanism further comprises a driving rod and a lock pin, a first micro switch and a shifting block are mounted on the gun body, the shifting block comprises a trigger end and a shifting end, the trigger end extends into the gun body, the shifting end is connected with the first micro switch, and the trigger end can be pushed to drive the shifting block to rotate in the moving process of the piston;
the shifting block is provided with a lock groove, and the end part of the lock pin can extend into the lock groove to prevent the shifting block from rotating;
the front end of the driving rod is also provided with a touch piece extending to the front end of the gun body, and the driving rod is provided with a reset piece for driving the driving rod and the touch piece to reset.
The gun is further provided with a second microswitch, a drive rod is provided with a micro contact facing the second microswitch, one end of the drive rod close to the micro contact is provided with a sliding groove, one end of the lock pin is formed with a push block, and the push block extends into the sliding groove.
The first microswitch is a normally closed switch, and the second microswitch is a normally open switch.
Further, one end of the lock pin is provided with a driving piece for driving the lock pin to move.
Further, a fixing block is arranged on the gun body, the resetting piece is pressed between the fixing block and the driving rod, and the driving piece is pressed between the lock pin and the fixing block.
Further, the reset piece is a reset spring, the driving piece is a driving spring, and the maximum elastic force which can be reached by the reset spring is greater than the maximum elastic force which can be reached by the driving spring.
The nail gun is characterized in that a pressing sheet is arranged at the front end of the touch sheet, a nail gun outlet is arranged at the front end of the gun body, and the outer end of the pressing sheet extends out of the nail gun outlet.
The front end of the driving rod is connected with the touch piece through an adjusting component, the adjusting component comprises an adjusting screw rod and an adjusting nut, the driving rod is connected to the adjusting nut, and the touch piece is connected to the adjusting screw rod.
The first microswitch is further provided with a shifting sheet, one end of the shifting sheet is hinged to the first microswitch, and the other end of the shifting sheet is inserted into the shifting end.
Further set up to, the internal energy storage chamber that is equipped with of rifle, energy storage intracavity are equipped with energy storage spring, and energy storage spring connects the piston, the inside guide bar that is equipped with of energy storage spring, guide bar include one-level guide section and second grade guide section, and the piston removes on one-level guide section, energy storage chamber lateral wall is close to one side of one-level guide bar and second grade guide bar junction and has seted up the slotted hole, the trigger end stretches into in this slotted hole.
The gun is further provided with a switch support, the shifting block is rotatably arranged on the switch support, and the switch support is also fixedly provided with the first micro switch and the second micro switch.
Compared with the prior art, the utility model outstanding and profitable technological effect is:
when the utility model is used, the piston in the gun body can generate thrust to the trigger end of the shifting block extending into the gun body in the motion process of triggering the nailing, when the trigger end is pushed, the shifting end can be driven to move, the first micro switch is driven to be opened, the power supply can be automatically cut off at the moment, a better protection effect is achieved, unnecessary injury to a user is avoided, and the safety performance is improved; meanwhile, the shifting block is provided with a locking groove, and the lock pin can extend into the locking groove to prevent the shifting block from rotating, so that the shifting block can continuously maintain the state of opening the first microswitch, even if the circuit is always kept in a disconnected state, the reliability and the safety are improved.
The utility model discloses first micro-gap switch's disconnection need not manual operation, and the motion that directly passes through the piston can be realized, and is very convenient, and some can adopt hall element or photosensitive switch to realize the automatic disconnection of circuit among the prior art, and this kind of mechanical type structure that this embodiment adopted compares hall element or photosensitive switch and can not receive the influence of environment, and overall structure and effect will be stable and reliable many, and life is also more permanent.
The utility model discloses the slotted hole is seted up at the junction that energy storage chamber lateral wall is close to one-level direction section and second grade direction section, the piston has arrived stroke maximum position promptly when reaching this junction, because in energy storage spring's elasticity reaction, the piston is more backward to be removed, speed can be slow more, when it moves the junction, speed drops to 0 almost, the in-process of slowing down gradually here touches the trigger end of shifting block, can avoid between the two because the too fast violent striking of speed leads to damaging, increase of service life.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a partially enlarged view of fig. 1 at a.
Fig. 3 is a partially enlarged view of fig. 1 at B.
Detailed Description
The invention will be further described in the following with reference to specific embodiments thereof, with reference to figures 1-3:
a nail gun comprises a gun body 1, wherein a switch assembly is arranged on the gun body 1 and comprises a first micro switch 23, a second micro switch 28 and a switch for controlling a motor, and when the three switches are closed simultaneously, the nail gun can be started to work. The working process is as follows: an energy storage cavity 11 is arranged in the gun body 1, an end cover 14 is arranged at the rear end of the energy storage cavity 11, a piston 7 is movably arranged at the front end, an energy storage spring 8 is also arranged in the energy storage cavity 11, the energy storage spring 8 is connected with the piston 7 and is pressed between the piston 7 and the end cover 14, the energy storage spring 8 can be directly connected with the piston 7 and the end cover 14, a buffer pad and a gasket can be pressed between the piston 7 and the end cover 14 to enhance the buffer and shock absorption performance, a guide rod 9 is arranged in the energy storage spring 8, one end of the guide rod 9 is connected with the end cover 14, the other end of the guide rod penetrates through the piston 7 and is connected with the front end of the gun body 1, the guide rod 9 comprises a primary guide section 91 and a secondary guide section 92, the piston 7 moves on the primary guide section 91, a nail shooting mechanism 15 is connected on the piston 7, when three switches are all in a closed state, the nail shooting, therefore, the energy storage spring 8 is compressed, when the piston moves to the joint of the first-stage guide section 91 and the second-stage guide section 92, the piston 7 reaches the maximum stroke, the motor is driven to stop at the moment, the piston 7 is pushed out under the elastic force of the energy storage spring 8, and the nail shooting mechanism is shot out to realize the nail shooting process.
In this embodiment, the first microswitch 23 is a normally closed switch, the second microswitch 28 is a normally open switch, and the nail gun is provided with a control mechanism for controlling the first microswitch 23 and the second microswitch 28 to open and close, and the specific control mechanism structure is as follows:
as shown in fig. 1 and fig. 2, the control mechanism further includes a driving rod 22 and a lock pin 26, the lock pin 26 is disposed on the driving rod or the gun body through a driving spring 52, the gun body 1 is mounted with a switch bracket 21, the lock pin 26 is movably disposed on the switch bracket 21, the switch bracket 21 is rotatably disposed with a dial block 24, and the switch bracket 21 is further fixedly disposed with the first micro switch 23 and the second micro switch 28; the shifting block 24 includes a triggering end 241 and a shifting end 242, the triggering end 241 extends to the interior of the gun body 1, a slot hole 13 is formed in one side of the side wall of the energy storage cavity 11, which is close to the joint of the first-level guide section 91 and the second-level guide section 92, and the triggering end 241 extends into the slot hole 13. When the piston 7 moves in the primary guide section 91, the trigger end 241 of the shifting block 24 extends into the slot hole 13, the trigger end 241 is pushed by the piston 7, the shifting end 242 prompts the first microswitch 23 (normally closed switch) to be switched off by a trigger circuit in the rotating process of the shifting block 24, and the automatic circuit switching-off during the nailing period can avoid the situation that continuous nailing is generated at the same position, so that the safety is higher; the triggering of the first micro-gap switch of this embodiment need not manual operation, and the motion of direct through the piston can be realized, and is very convenient, some can adopt hall element or photosensitive switch to realize the automatic disconnection of circuit among the prior art, and this kind of mechanical type structure that this embodiment adopted compares hall element or photosensitive switch and can not receive the influence of environment, and overall structure and effect will be stable and reliable many, and life is also more permanent.
The reason why the slot hole 13 is formed in the side wall of the energy storage cavity 11 near the joint of the primary guide section 91 and the secondary guide section 92 is that the piston reaches the maximum stroke position when reaching the joint, and due to the elastic reaction of the energy storage spring, the speed is slower as the piston moves backwards, and when the piston moves to the joint, the speed is almost reduced to 0, and the piston touches the trigger end of the shifting block in the gradual speed reduction process, so that the damage caused by the over-high and violent impact between the piston and the shifting block can be avoided, and the service life is prolonged.
In order to enable the shifting block to keep the state of opening the first microswitch after being pushed by the piston, a locking groove 27 is formed on the shifting block 24, and the end part of the lock pin 26 can extend into the locking groove 27 to prevent the shifting block from rotating; in the original position, the end of the lock pin abuts against the circumferential surface of the dial 24, when the dial 24 rotates after being pushed by the piston 7, the lock groove 27 gradually turns to the direction of the lock pin 26, the lock pin 26 extends into the lock groove 27 (as shown in fig. 2) under the driving of the driving spring 52, and the dial 24 cannot rotate and reset under the blocking of the lock pin 26, so that the first microswitch 23 is continuously kept in an open state, and the circuit is disconnected.
The front end of the driving rod 22 is further provided with a touch piece 25 extending to the front end of the gun body 1, the driving rod 22 is provided with a reset piece for driving the driving rod 22 and the touch piece 25 to reset, and the reset piece is a reset spring 51. The front end of the touch piece 25 exceeds the nail shooting muzzle and is provided with a pressing piece 251, the front end of the gun body 1 is provided with a nail gun outlet 12, and the outer end of the pressing piece 251 extends out of the nail gun outlet 12. When the nail gun is pressed against the operation surface, the contact piece 25 contacts the operation surface first, then the driving rod 22 is driven to move backwards under the counterforce, so that the nail gun mouth contacts the operation surface, and when the nail gun is lifted after the nail shooting is finished, the contact piece and the driving rod move forwards and reset under the driving of the elastic force of the reset spring.
The second microswitch 28 is arranged on the switch bracket 21, the micro contact 222 facing the second microswitch 28 is arranged on the driving rod 22, when the nail gun is abutted against an operation surface to prepare for nail shooting, the driving rod 22 moves backwards under the thrust of the contact piece, the micro contact 222 acts on the second microswitch 28 (normally open switch), the second microswitch 28 is triggered to be closed, and the circuit is connected.
A sliding groove 221 is formed at one end of the driving rod 22 close to the micro contact 222, a pushing block 261 is formed at one end of the lock pin 26, the outer end of the pushing block extends out of the sliding groove 221, a fixed block 4 is arranged on the gun body 1, the return spring 51 is arranged between the fixed block 4 and the driving rod 22 in a pressing mode, and the driving spring 52 is arranged between the lock pin 26 and the fixed block 4 in a pressing mode; the maximum spring force that can be achieved by the return spring 51 is greater than the maximum spring force that can be achieved by the drive spring 52. When the nail of the nail gun is lifted off the operating surface, under the elastic force of the reset spring 51, the driving rod and the touch sheet are pushed to reset, the driving rod moves forwards, the micro contact 222 leaves the second micro switch, so that the second micro switch is restored to the off state, meanwhile, in the process of the forward movement of the driving rod, as the push block extends into the sliding groove 221, the end side surface of the sliding groove 221 is gradually attached to the push block 261, as the maximum elastic force which can be reached by the reset spring 51 is greater than the maximum elastic force which can be reached by the driving spring 52, the driving rod 22 can drive the push block 261 to move forwards, namely, the lock pin 26 is driven by the driving rod 22 to move forwards and gradually separates from the lock groove 27, the shifting block 24 rotates to reset under the reaction force of the first micro switch 23, at the moment, the first micro switch 23 returns to the on state, and in this state, as the second micro switch 28 is opened, the, even the motor switch is pressed, the nail gun cannot be started, the condition that the nail gun can still be opened after the completion of nail shooting is avoided, and the safety is enhanced.
The front end of the driving rod 22 is connected to the touch piece 25 through an adjusting assembly, as shown in fig. 3, the adjusting assembly includes an adjusting screw 61 and an adjusting nut 62, the driving rod 22 is connected to the adjusting nut 62, and the touch piece 25 is connected to the adjusting screw 61. The adjusting component can adjust the distance between the driving rod and the touch sheet according to the actual operation condition, and is very convenient.
The utility model discloses a theory of operation:
in the state where the nail gun is not used (initial state): the first microswitch is a normally closed switch, keeps a closed state, the shifting block 4 is also at an original position (the lock pin is propped against the circumferential surface of the shifting block), and the second microswitch is a normally open switch, so that a circuit cannot be conducted, and nailing cannot be realized even if the motor switch is pressed.
When the nail gun is used for shooting nails on an operation surface, the front end of the nail gun is abutted against the operation surface, the touch sheet 25 contacts the operation surface firstly, then the touch sheet 25 drives the driving rod 22 to move backwards under the reaction force, so that the nail gun mouth contacts the operation surface, at the moment, in the process that the driving rod 22 moves backwards, the micro contact 222 acts on the second micro switch 28 (normally open switch), the second micro switch 28 is triggered to be closed, at the moment, the first micro switch 23 and the second micro switch 28 are both in a closed state, and the work of the nail gun can be started only by pressing the motor switch to be closed. After the motor is started, the nail shooting mechanism pushes the piston 7 to move on the primary guide section 91 under the control of the motor, when the piston 7 moves to the limit position quickly, the triggering end 241 of the shifting block 24 rotates under the thrust of the piston 7, so that the shifting end 242 triggers the first microswitch 23 to disconnect a circuit, meanwhile, the lock groove 27 rotates towards the direction of the lock pin 26, the lock pin 26 is inserted into the lock groove 27, the shifting block 24 is prevented from rotating and resetting, and the first microswitch 2 is kept in a disconnected state continuously; the nail shooting mechanism loses the pushing action of the motor at the moment, and the piston 7 carries the nail shooting mechanism to be pushed out under the elastic force of the energy storage spring 8, so that nailing is realized. Because first micro-gap switch 2 keeps the off-state continuously for the circuit also can't restart after shooting the nail, avoided the condition of repeated play nail, the security is high.
When the nail gun is taken off from the operation surface after the nailing is finished, under the elastic force of the reset spring 51, the driving rod 22 and the touch piece 25 are pushed to reset, the driving rod 22 moves forwards, the micro contact 222 leaves the second micro switch 28, so that the second micro switch 28 is restored to the off state, meanwhile, in the forward movement process of the driving rod 22, the side surface of the end part of the sliding groove 221 is gradually attached to the push block 261, because the maximum elastic force which can be reached by the reset spring 51 is greater than the maximum elastic force which can be reached by the driving spring 52, the driving rod can drive the push block 261 to move forwards, namely, the lock pin 26 is driven by the driving rod 22 to move forwards and gradually separate from the lock groove 27, the shifting block 24 rotates to reset under the reaction force of the first micro switch 23, at the moment, the first micro switch 23 restores to the on state, namely, the initial state, because the second micro switch is switched off and the first micro switch is switched on, even the motor switch is pressed, the nail gun cannot be started, the condition that the nail gun can still be opened after the completion of nail shooting is avoided, and the safety is enhanced.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a control mechanism of power actuated setting device, includes the rifle body (1), removes in the rifle body (1) and is equipped with piston (7), is connected with power actuated setting device on piston (7), its characterized in that: the gun body (1) is provided with a first microswitch (23), a second microswitch (28) and a shifting block (24), the shifting block (24) comprises a trigger end (241) and a shifting end (242), the trigger end (241) extends into the gun body (1), the shifting end (242) is connected with the first microswitch (23), and the piston (7) can push the trigger end (241) to drive the shifting block (24) to rotate in the moving process;
a lock groove (27) is formed in the shifting block (24), and the end of the lock pin (26) can extend into the lock groove (27) to prevent the shifting block from rotating;
the front end of the driving rod (22) is also provided with a touch piece (25) extending to the front end of the gun body (1), the driving rod is provided with a reset piece driving the driving rod and the touch piece to reset, and the driving rod (22) is provided with a micro contact (222) facing to the second micro switch (28).
2. The control mechanism for a nail gun according to claim 1, wherein: a sliding groove (221) is formed in one end, close to the micro contact (222), of the driving rod (22), a pushing block (261) is formed in one end of the lock pin (26), and the pushing block extends into the sliding groove (221).
3. The control mechanism for a nail gun according to claim 2, wherein: the first microswitch (23) is a normally closed switch, and the second microswitch (28) is a normally open switch.
4. The control mechanism of a nail gun according to claim 1, 2 or 3, characterized in that: one end of the lock pin (26) is provided with a driving piece for driving the lock pin to move.
5. The control mechanism for a nail gun according to claim 4, wherein: the gun body (1) is provided with a fixed block (4), the reset piece is pressed between the fixed block (4) and the driving rod (22), and the driving piece is pressed between the lock pin (26) and the fixed block (4).
6. The control mechanism for a nail gun according to claim 5, wherein: the reset piece is a reset spring (51), the driving piece is a driving spring (52), and the maximum elastic force which can be reached by the reset spring (51) is greater than the maximum elastic force which can be reached by the driving spring (52).
7. The control mechanism for a nail gun according to claim 1, wherein: the front end of the touch piece (25) is provided with a pressing piece (251), the front end of the gun body (1) is provided with a nail gun outlet (12), and the outer end of the pressing piece (251) extends out of the nail gun outlet (12).
8. The control mechanism of a nail gun according to claim 1, 2, 3 or 7, characterized in that: the utility model discloses a drive rod, including actuating lever (22), drive rod (22) front end pass through adjusting part with it links to each other to touch piece (25), and adjusting part includes adjusting screw (61) and adjusting nut (62), drive rod (22) are connected on adjusting nut (62), touch piece (25) and connect on adjusting screw (61).
9. The control mechanism of a nail gun according to claim 1, 2, 3 or 7, characterized in that: be equipped with energy storage chamber (11) in rifle body (1), be equipped with energy storage spring (8) in energy storage chamber (11), energy storage spring (8) are connected piston (7), energy storage spring (8) inside is equipped with guide bar (9), and guide bar (9) include one-level direction section (91) and second grade direction section (92), and piston (7) move on one-level direction section (91), slotted hole (13) have been seted up to one side that energy storage chamber (11) lateral wall is close to one-level direction section (91) and second grade direction section (92) junction, trigger end (241) stretch into in this slotted hole (13).
10. The control mechanism of a nail gun according to claim 1, 2 or 3, characterized in that: the gun is characterized in that a switch support (21) is arranged on the gun body (1), the shifting block (24) is rotatably arranged on the switch support (21), and the switch support (21) is further fixedly provided with the first micro switch (23) and the second micro switch (28).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922486372.0U CN211565764U (en) | 2019-12-30 | 2019-12-30 | Control mechanism of nail gun |
| US16/996,059 US11618144B2 (en) | 2019-08-26 | 2020-08-18 | Energy storage mechanism and nail gun having same |
| US16/996,100 US11511406B2 (en) | 2019-08-26 | 2020-08-18 | Control and protection mechanism and nail gun having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922486372.0U CN211565764U (en) | 2019-12-30 | 2019-12-30 | Control mechanism of nail gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211565764U true CN211565764U (en) | 2020-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922486372.0U Active CN211565764U (en) | 2019-08-26 | 2019-12-30 | Control mechanism of nail gun |
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| Country | Link |
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| CN (1) | CN211565764U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023093037A1 (en) * | 2021-11-29 | 2023-06-01 | 台州市大江实业有限公司 | Force providing unit for nail shooting gun, nail shooting driving mechanism, and nail shooting gun |
| WO2024055537A1 (en) * | 2022-09-15 | 2024-03-21 | 台州市大江实业有限公司 | Fastener drive and control mechanism and fastener gun |
-
2019
- 2019-12-30 CN CN201922486372.0U patent/CN211565764U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023093037A1 (en) * | 2021-11-29 | 2023-06-01 | 台州市大江实业有限公司 | Force providing unit for nail shooting gun, nail shooting driving mechanism, and nail shooting gun |
| WO2024055537A1 (en) * | 2022-09-15 | 2024-03-21 | 台州市大江实业有限公司 | Fastener drive and control mechanism and fastener gun |
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