Nail shooting control device and nail gun

Abstract

The present invention provides a more convenient-to-operate nail shooting control device and a nail gun, including a nail shooting switch, a safety switch, an energy storage stop switch and a control module. The control module can control the driving motor to start or stop according to different electrical signals generated when each switch is pressed. Since the nail shooting pressing part of the nail shooting switch and the safety pressing part of the safety switch are both arranged on the handle of the nail gun, and the safety pressing part is arranged near the nail shooting pressing part, when the user holds the nail gun, the user can simultaneously press the nail shooting switch and the safety switch with one hand to shoot the nail, which is convenient to operate. Since there is an energy storage stop switch, the driving motor can be controlled to stop when the nail gun completes energy storage and the piston reaches a predetermined position, so that the nail gun can pre-complete the energy storage step for the next nail shooting, thus improving the work efficiency. At the same time, since the design of double switches and double insurance is still adopted, the safety during the nail shooting process is also ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of fastening tools, and particularly relates to a nail shooting control device and a nail gun. Background Art

[0002] A nail gun is a fastening tool, which is mostly used in construction. At present, an electric nail gun powered by a lithium battery is widely used. This kind of nail gun drives a piston through a driving motor and a corresponding transmission structure. Then, the piston compresses a force supply spring for energy storage. When shooting a nail, the force supply spring drives the piston to move, and then drives a firing pin installed on the piston to shoot the nail out.

[0003] Due to the large shooting force of the nail, the nail gun usually adopts a double insurance design to improve safety. Its common form is a trigger set at the handle and a push switch set at the nozzle. When shooting a nail is needed, the user needs to press the nozzle hard against the wall or other places, and then press the trigger switch to shoot the nail, which is very laborious and inconvenient. In addition, the initial state of most nail guns is a non-energy storage state, that is, the force supply spring is in a non-compressed state. In this state, after pressing the trigger switch, it is necessary to go through an energy storage process before shooting a nail. Therefore, the user needs to wait for a long time to complete shooting a nail, which not only wastes time but also gives the user an illusion that the nail gun reacts slowly. At the same time, since the firing pin protrudes outward from the nozzle in the non-energy storage state, the firing pin is used for positioning during directional nail shooting instead of the nozzle. Since the firing pin retracts during the energy storage process, it also causes problems of inaccurate and unstable positioning.

[0004] Therefore, in order to make the operation of the user more convenient and fast, and make the positioning more accurate and stable during directional nail shooting, a nail gun with a corresponding optimized structure and control method is needed. Summary of the Invention

[0005] In order to solve the above problems and provide a nail shooting control device that is more convenient to operate and does not affect safety and nail shooting effect, the present invention adopts the following technical solutions:

[0006] The present invention provides a nail shooting control device, which is characterized in that it includes a nail shooting switch, having a pressing part for nail shooting and a switch element for nail shooting, and the switch element for nail shooting generates a nail shooting electrical signal when the pressing part for nail shooting is pressed; a safety switch, having a pressing part for safety and a switch element for safety, and the switch element for safety generates a safety electrical signal when the pressing part for safety is pressed; and a control module, which is electrically connected to a driving motor, the switch element for nail shooting and the switch element for safety respectively. Among them, the nail shooting switch and the safety switch are both arranged on the handle, and the safety switch is arranged near the nail shooting switch. The switch element for nail shooting is arranged at a position corresponding to the pressing part for nail shooting inside the handle, and the switch element for safety is arranged at a position corresponding to the pressing part for safety inside the handle.

[0007] In the nail shooting control device provided by the present invention, the nail gun has a firing pin for hitting the nail, a piston for driving the firing pin to move, and a power supply spring for providing power to the piston. The nail shooting control device may further have the following technical feature, and further includes an energy storage stop switch, having a pushing part for stopping and a switch element for stopping, and the switch element for stopping generates a stop electrical signal when the pushing part for stopping is pushed and pressed. Among them, the piston has a pushing part extending towards the pushing part for stopping, for pushing the pushing part for stopping. The pushing part for stopping is arranged at a predetermined energy storage completion position beside the power supply spring, and the switch element for stopping is arranged at a position corresponding to the pushing part for stopping.

[0008] In the nail shooting control device provided by the present invention, it may further have the following technical feature, wherein the switch element for nail shooting, the switch element for safety, and the switch element for stopping are all microswitches.

[0009] In the nail shooting control device provided by the present invention, it may further have the following technical feature, wherein the control module includes a programmable control chip, and the model of the control chip is DX021 - SOP16.

[0010] In the nail shooting control device provided by the present invention, it may further have the following technical feature, wherein the control module includes: a signal receiving unit, for receiving the nail shooting electrical signal, the safety electrical signal, and the stop electrical signal; and a motor control unit, which controls the driving motor to start when the signal receiving unit receives the nail shooting electrical signal and the safety electrical signal simultaneously, and controls the driving motor to stop when the signal receiving unit receives the stop electrical signal.

[0011] In the nail shooting control device provided by the present invention, it may further have the following technical feature, and further includes a signal determination unit, which determines the validity of the nail shooting electrical signal, the safety electrical signal, and the stop electrical signal received by the signal receiving unit according to a predetermined unit time and a predetermined signal receiving rule.

[0012] The nail shooting control device provided by the present invention may further have the following technical feature: The signal determination unit determines that a repeated / long-on nail shooting electrical signal is the first nail shooting electrical signal received within the corresponding unit time, determines that a repeated safety electrical signal is the first safety electrical signal received within the corresponding unit time, determines that a long-on safety electrical signal is only the first safety electrical signal received, determines that a repeated stop electrical signal is the first stop electrical signal received within the corresponding unit time, and determines that a long-on stop electrical signal is only the first stop electrical signal received.

[0013] The nail shooting control device provided by the present invention may further have the following technical feature: The signal determination unit determines that a repeated nail shooting electrical signal is the first nail shooting electrical signal received within the corresponding unit time, determines that a long-on nail shooting electrical signal is only the first nail shooting electrical signal received, determines that a repeated / long-on safety electrical signal is the first safety electrical signal received within the corresponding unit time, determines that a repeated stop electrical signal is the first stop electrical signal received within the corresponding unit time, and determines that a long-on stop electrical signal is only the first stop electrical signal received.

[0014] The nail shooting control device provided by the present invention may further have the following technical feature: It further includes a power switch. When the power switch is pressed, the signal determination unit shields the stop electrical signal received within 1 unit time and regards it as receiving the stop electrical signal after 1.1 - 1.5 unit times.

[0015] The present invention provides a nail gun, which is characterized by including a driving motor; and a nail shooting control device electrically connected to the driving motor for controlling the start and stop of the driving motor. The nail shooting control device is the above-mentioned nail shooting control device.

[0016] The nail gun provided by the present invention may further have the following technical feature: It further includes a one-way bearing installed at the output end of the driving motor.

[0017] Function and effect of the invention

[0018] The nail shooting control device and nail gun according to the present invention, the nail shooting control device includes a nail shooting switch, a safety switch and a control module. The control module is electrically connected to the drive motor, the nail shooting switch and the safety switch respectively. Therefore, the control module can control the drive motor of the nail gun according to the nail shooting electrical signal and the safety electrical signal generated when the nail shooting switch and the safety switch are pressed. Since the nail shooting pressing part of the nail shooting switch and the safety pressing part of the safety switch are both arranged on the handle of the nail gun, and the safety pressing part is arranged near the nail shooting pressing part, and the corresponding nail shooting switch element and safety switch element are arranged in the handle, when the user holds the nail gun, he can press the nail shooting switch and the safety switch simultaneously with one hand to shoot the nail, which is convenient to operate and greatly improves the work efficiency. At the same time, since the nail shooting control device of the present invention still adopts the design of double switches and double insurance, the safety during the nail shooting process is also ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the structural block diagram of the nail gun according to the embodiment of the present invention;

[0020] Figure 2 is the structural diagram of the nail gun according to the embodiment of the present invention;

[0021] Figure 3 is the structural diagram of the nail gun according to the embodiment of the present invention after removing part of the housing and the regulation board;

[0022] Figure 4 is the structural diagram of the striker driving mechanism according to the embodiment of the present invention;

[0023] Figure 5 is the exploded structural diagram of the striker driving mechanism according to the embodiment of the present invention;

[0024] Figure 6 is the structural diagram of the piston according to the embodiment of the present invention;

[0025] Figure 7 is the structural diagram of the driving wheel and the piston cooperating for a first stage of energy storage according to the embodiment of the present invention;

[0026] Figure 8 is the structural diagram of the driving wheel and the piston cooperating for a second stage of energy storage according to the embodiment of the present invention;

[0027] Figure 9 is the structural diagram of the striker driving mechanism completing the second stage of energy storage according to the embodiment of the present invention;

[0028] Figure 10 is the structural diagram of the nail gun according to the embodiment of the present invention at different angles after removing part of the housing;

[0029] Figure 11 is the circuit structural diagram of the control circuit according to the embodiment of the present invention;

[0030] Figure 12 is the circuit structure diagram of the battery management circuit according to an embodiment of the present invention;

[0031] Figure 13 is the circuit structure diagram of the power conversion circuit according to an embodiment of the present invention;

[0032] Figure 14 is the circuit structure diagram of the voltage sampling circuit for nail shooting according to an embodiment of the present invention;

[0033] Figure 15 is the circuit structure diagram of the voltage sampling circuit for safety according to an embodiment of the present invention;

[0034] Figure 16 is the circuit structure diagram of the voltage sampling circuit for stopping according to an embodiment of the present invention;

[0035] Figure 17 is the circuit structure diagram of the motor connection circuit according to an embodiment of the present invention;

[0036] Figure 18 is the working flowchart for performing a single nail shooting according to an embodiment of the present invention;

[0037] Figure 19 is the working flowchart for performing continuous nail shooting according to an embodiment of the present invention.

[0038] Reference numerals:

[0039] Nail gun 10; housing 20; main body housing 21; handle 211; firing pin baffle 22; firing pin driving mechanism 30; regulation frame 31; limit base 311; limit plate 312; regulation plate 313; guide rod 32; spring assembly 33; first force supply spring 331; second force supply spring 332; piston 34; piston main body 341; socket through hole 3411; rolling element groove 3412; firing pin mounting portion 3413; first piston protection member 342; second piston protection member 343; first pushing end 345; second pushing end 346; rolling element 35; buffer member 36; driving wheel 37; wheel body 371; first pushing protrusion 3711; second pushing protrusion 3712; driving motor 38; motor 381; speed reduction and torque increase unit 382; one-way bearing 39; firing pin 40; nozzle 50; nail feeding mechanism 60; lithium battery 70; nail firing control device 80; power switch 81; nail firing switch 82; nail firing pressing portion 821; nail firing switch element 822; safety switch 83; safety pressing portion 831; safety switch element 832; energy storage stop switch 84; stop pushing portion 841; stop switch element 842; control module 85; control unit 851; control circuit 8511; power management unit 852; battery management circuit 8521; power conversion circuit 8522; signal receiving unit 853; starting voltage sampling circuit 8531; nail firing voltage sampling circuit 8532; safety voltage sampling circuit 8533; stop voltage sampling circuit 8534; signal determination unit 854; motor driving unit 855; motor connection circuit 8551. Detailed implementation manner

[0040] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the nail firing control device and nail gun of the present invention will be specifically described below in conjunction with embodiments and drawings.

[0041] <Embodiment>

[0042] This embodiment provides a nail firing control device and a nail gun, which are more convenient to operate and do not affect safety and nail firing effect.

[0043] Figure 1 It is a structural block diagram of the nail gun according to an embodiment of the present invention.

[0044] Figure 2 It is a structural diagram of the nail gun according to an embodiment of the present invention.

[0045] Figure 3 It is a structural diagram of the nail gun according to an embodiment of the present invention after removing part of the housing and the regulation plate.

[0046] As Figures 1-3As shown, the nail gun 10 of this embodiment includes a housing 20 (i.e., a shell), a firing pin driving mechanism 30, a firing pin 40, a nozzle 50, a nail feeding mechanism 60, a lithium battery 70, and a nail firing control device 80.

[0047] The housing 20 includes a main body housing 21 and a firing pin baffle 22 detachably mounted on the main body housing 21.

[0048] The main body housing 21 is used to accommodate internal components such as the nail driving mechanism 30 and the firing pin 40, and protect these internal components. The main body housing 21 includes a handle 211 for the user to hold and a base 212 connected to the handle 211. Both the handle 211 and the base 212 are hollow structures. An operation opening 2121 is provided on the base 212, and the power switch 81 etc. are exposed from the operation opening 2121.

[0049] The firing pin driving mechanism 30 is used to drive the firing pin 40 to strike the nail, so that the nail is ejected from the nozzle 50.

[0050] Figure 4 is a structural diagram of the firing pin driving mechanism of the embodiment of the present invention.

[0051] Figure 5 is an exploded view of the structure of the firing pin driving mechanism of the embodiment of the present invention.

[0052] As Figure 4 and Figure 5 shown, the nail driving mechanism 30 of this embodiment includes a regulation frame 31, a guide rod 32, a spring assembly 33, a piston 34, a pair of rolling elements 35, a buffer 36, a driving wheel 37, a driving motor 38, and a one-way bearing 39.

[0053] The regulation frame 31 is used to regulate and limit the piston 34, so that the piston 34 only moves along a predetermined reciprocating motion direction. As Figure 3 shown, the direction indicated by the arrow D1 is the nail firing direction, the direction indicated by the arrow D2 is the energy storage direction, and the reciprocating motion direction includes the above-mentioned nail firing direction and the energy storage direction. The length direction of the regulation frame 31 is consistent with this reciprocating motion direction. The regulation frame 31 includes a limit base 311, a limit plate 312, and two regulation plates 313.

[0054] The limit base 311 is used to limit the movement of the piston 34 during nail shooting and bear the impact of the piston 34. The limit plate 312 is used to limit the piston 34 and the spring assembly 33. The middle part of the limit plate 312 has a circular limit through hole 3121 that matches the guide rod 32 for installing the guide rod 32. The regulation plate 313 is used to regulate the movement direction of the piston 34. The two regulation plates 313 are arranged in parallel and both extend along the length direction of the regulation frame 31. At the same time, the limit base 311 and the limit plate 312 are both perpendicular to the regulation plate 313, and the two ends of the limit base 311 and the limit plate 312 are respectively connected to the ends of the two regulation plates 313 and fastened by a plurality of frame fasteners 314 to form an open square frame.

[0055] The guide rod 32 is used to guide the piston 34 to move along a predetermined reciprocating movement direction. The guide rod 32 is a circular rod with uniform thickness along its length direction. One end of the guide rod 32 is fixedly installed in the middle of the limit base 311 through the guide rod installation hole 3111, and the other end is movably installed in the middle of the limit plate 312 through the limit through hole 3121.

[0056] The spring assembly 33 is used to provide power for hitting the nail. The spring assembly 33 in this embodiment includes a first power supply spring 331 and a second power supply spring 332, both of which are sleeved on the guide rod 32 and both have one end abutted against the limit plate 312 and the other end abutted against the piston 34. Among them, the diameter of the first power supply spring 331 is larger than that of the second power supply spring 332, and the helix directions of the first power supply spring 331 and the second power supply spring 332 are different. When sleeved on the guide rod 32, the first power supply spring 331 is in the outer layer and the second power supply spring 332 is in the inner layer.

[0057] The piston 34 is used to drive the striker 40 installed on the piston 34 to move.

[0058] Figure 6 is the structural diagram of the piston in this embodiment.

[0059] As Figure 6 shown, the piston 34 in this embodiment includes a piston main body 341, a first piston protection part 342, and a second piston protection part 343.

[0060] The piston main body 341 is a component made of aluminum. A socket through hole 3411 is opened in the middle of the piston main body 341 for movably sleeving the piston 34 onto the guide rod 32. On both sides of the piston 341 facing the two regulation plates 313, rolling element grooves 3412 are respectively provided for rollably fitting the rolling elements 35.

[0061] On one side of the piston body 341 facing the firing pin baffle 22, there is a firing pin mounting portion 3413 which has a firing pin mounting hole for fixedly mounting the firing pin 40. On one side of the piston body 341 facing the drive wheel 37, there are a first pushing portion 3414 and a second pushing portion 3415 for cooperating with the drive wheel 37 to push the piston 34 to move. Among them, the first pushing portion 3414 extends from the piston body 341 towards the nail firing direction, the second pushing portion 3415 extends from the piston body 341 towards the drive wheel 37, and the second pushing portion 3415 is substantially perpendicular to the first pushing portion 3414.

[0062] Both the first piston protection member 342 and the second piston protection member 343 are made of iron, so they are more wear-resistant and play a protective role for the piston body 341. Among them, the shape of the first piston protection member 342 matches that of the first pushing portion 3414, and the first piston protection member 342 covers the first pushing portion 3414 to form the first pushing end 345. The shape of the second piston protection member 343 matches that of the second pushing portion 3415, and the second piston protection member 343 covers the second pushing portion 3415 to form the second pushing end 346.

[0063] Both the first piston protection member 342 and the second piston protection member 343 are fixedly mounted on the piston body 341 through corresponding fasteners (not shown in the figure). In this embodiment, the fastener is a screw.

[0064] The rolling member 35 is used to reduce the frictional force suffered by the piston 34 during movement. In this embodiment, the rolling member 35 is a steel ball and is spherical. It is rollably mounted in the rolling member groove 3412 and protrudes outwards from the rolling member groove 3412, so that the piston 34 does not directly contact the regulating plate 313, thereby reducing the frictional force suffered by the piston 34 during movement.

[0065] The buffer member 36 is used to buffer the impact on the piston 34 during nail firing, thereby protecting the limit base 311 and the piston 34. At the same time, the setting of the buffer member 36 can also reduce the rebounding force of the piston 34. In this embodiment, the buffer member 36 is a buffer pad made of soft plastic material, which is installed in the corresponding groove on the limit base 311 and protrudes outwards from the groove, so that the piston 34 does not directly impact the limit base 311 during nail firing.

[0066] The drive wheel 37 is used to push the piston 34 towards the spring assembly 33, that is, towards the energy storage direction, so as to compress and store energy for the first force supply spring 331 and the second force supply spring 332. As Figure 2 and Figure 5 shown, the drive wheel 37 has a wheel body 371 and a first pushing protrusion 3711 and a second pushing protrusion 3712 provided on the wheel body 371.

[0067] The wheel body 371 can rotate along its central axis, driving the first pushing protrusion 3711 and the second pushing protrusion 3712 to perform an arc-shaped movement, and then pushing the piston 34 to move. The middle part of the wheel body 371 has a pivot hole 3713, and the wheel body 371 is installed on the output end of the drive motor 38 through this pivot hole 3713 and rotates with this output end as the axis.

[0068] On the side of the wheel body 371 facing the piston 34, there are arranged a first pushing protrusion 3711 and a second pushing protrusion 3712. Both the first pushing protrusion 3711 and the second pushing protrusion 3712 are cylindrical, their extending directions are the same as the extending direction of the pivot hole 3713, and the height of the first pushing protrusion 3711 is higher than that of the second pushing protrusion 3712.

[0069] The shape and height of the first pushing protrusion 3711 correspond to the setting of the first abutting end 345, and the shape and height of the second pushing protrusion 3712 correspond to the setting of the second abutting end 346.

[0070] Figure 7 It is a structural diagram of the driving wheel and the piston in the embodiment of the present invention for performing a section of energy storage in cooperation. At the same time, to make the illustration of energy storage clearer, Figures 7-9 structures such as the second force supply spring 332 and the regulation plate 313 are omitted.

[0071] As Figure 7 shown, the driving wheel 37 rotates under the drive of the drive motor 38. As the pushing member 37 rotates, the second pushing protrusion 3712 moves to the second abutting end 346 and abuts against the second abutting end 346. At this time, the pushing member 37 continues to rotate, and the second pushing protrusion 3712 makes an arc-shaped movement roughly towards the energy storage direction, applying an arc-shaped driving force roughly towards the energy storage direction to the piston 34 through the second abutting end 346. Under the action of this driving force, the piston 34 can move along the guide rod 32 towards the energy storage direction, and can also perform a circular motion around the guide rod 32. Since the piston 34 abuts against the corresponding regulation plate 313 through a pair of rolling members 35 respectively, the movement direction of the piston 34 is restricted, so that it cannot perform a circular motion, that is, the piston 34 will not deflect along the width direction of the regulation frame 31, but can only move along the guide rod 32 towards the energy storage direction, thereby compressing the first force supply spring 331 and the second force supply spring 332 for energy storage.

[0072] Figure 8 It is a structural diagram of the driving wheel and the piston in the embodiment of the present invention for performing the second stage of energy storage in cooperation. Figure 9 It is a structural diagram of the striker driving mechanism in the embodiment of the present invention for completing the second stage of energy storage.

[0073] As Figure 8 and Figure 9As shown, when the second pushing protrusion 3712 rotates along the energy storage direction to the maximum stroke, the first-stage energy storage is completed. At this time, the pushing member 37 continues to rotate, and the second pushing protrusion 3712 rotates accordingly and disengages from the second pushing end 346. At the same time, the first pushing protrusion 3711 rotates to the first pushing end 345 and abuts against the first pushing end 345. Subsequently, the first pushing protrusion 3711 pushes the piston 34 further in the energy storage direction in the same manner until the first pushing protrusion 3711 rotates along the energy storage direction to the maximum stroke, completing the second-stage energy storage.

[0074] After the second-stage energy storage is completed, the nail shooting can be carried out. During nail shooting, the driving motor 38 drives the pushing member 37 to continue rotating, and the first pushing protrusion 3711 rotates accordingly and disengages from the first pushing end 345. At this time, both the first pushing protrusion 3711 and the second pushing protrusion 3712 are outside the movement path of the piston 34. Therefore, the piston 34 moves in the nail shooting direction under the action of the elastic force of the spring assembly 33 until the piston 34 hits the buffer member 36, completing the nail shooting process.

[0075] The driving motor 38 is used to drive the driving wheel 37 to rotate, and then push the piston 34 to move through the driving wheel 37. As Figure 3 and Figure 5 shown, the driving motor 38 includes a motor 381 and a speed reduction and torque increase unit 382. The motor 381 in this embodiment is a brushless motor. The speed reduction and torque increase unit 382 is installed at the output end of the motor 381 and is used to reduce the rotational speed of the output end of the motor 381, thereby obtaining a higher output torque, that is, a greater driving force. An output shaft 3821 is provided at the end of the speed reduction and torque increase unit 382, and this output shaft 3821 is the output end of the driving motor 38. The wheel body 371 of the driving wheel 37 is installed on the output shaft 3821 through a pivot hole in the middle thereof, so that the driving wheel 37 can rotate synchronously with the output shaft 3821.

[0076] The one-way bearing 39 is used to limit the rotation direction of the output end of the driving motor 38 so that it can only rotate in one direction. The one-way bearing 39 is installed on the output shaft 3821 of the speed reduction and torque increase unit 382 and forms a hole-shaft fit with the output shaft 3821, so that the output shaft 3821 can only rotate in one direction. At the same time, when the driving wheel 37 is subjected to a driving force that makes it rotate in the reverse direction, the one-way bearing 39 bears this driving force, so that this driving force is not transmitted to the output shaft 3821, thereby playing a protective role for the driving motor 38. Therefore, during the above-mentioned first-stage energy storage or second-stage energy storage, the driving wheel 37 will not rotate in the reverse direction under the action of the piston 34, resulting in accidental nail shooting.

[0077] The specific structures of the motor 381, the speed reduction and torque increase unit 382, and the one-way bearing 39 can adopt the structures in the prior art.

[0078] The firing pin 40 is used to strike a nail, so that the nail is ejected from the nozzle 50.

[0079] The nozzle 50 is used to accommodate the firing pin 40, and plays a role in limiting and guiding the firing pin 40 when the firing pin 40 strikes and fires a nail. At the same time, the nozzle 50 also receives the nail from the nail feeding mechanism 60.

[0080] The nail feeding mechanism 60 is used to accommodate a plurality of nails and sequentially send the plurality of nails to the nozzle 50.

[0081] The specific structures of the nozzle 50 and the nail feeding mechanism 60 can adopt the structures in the prior art.

[0082] The lithium battery 70 is used to provide electrical energy for the drive motor 38, and has a positive electrode for charging, a negative electrode for charging, a battery positive electrode, and a battery negative electrode.

[0083] The nail firing control device 80 is used to control the drive motor 38, so as to control the nail gun 10 to store energy or eject the nail.

[0084] Figure 10 It is a structural diagram of the nail gun according to the embodiment of the present invention at different angles after removing part of the casing.

[0085] As Figure 3 and Figure 10 shown, the nail firing control device 80 of this embodiment includes a power switch 81, a nail firing switch 82, a safety switch 83, an energy storage stop switch 84, and a control module 85.

[0086] The power switch 81 is a button-type switch, and its specific structure can adopt the structure in the prior art. When the power switch 81 is pressed, a corresponding start electrical signal is generated.

[0087] The nail firing switch 82 is a trigger-type switch, and has a nail firing pressing part 821 and a nail firing switch element 822. The nail firing switch element 822 of this embodiment is a micro switch, which is arranged inside the handle 211 at a position corresponding to the nail firing pressing part 821. This micro switch has a trigger reed. When the nail firing pressing part 821 is pressed down and touches this trigger reed, the nail firing switch element 832 generates a corresponding nail firing electrical signal, and this nail firing electrical signal is a voltage signal.

[0088] The safety switch 83 is also a trigger-type switch, and has a safety pressing part 831 and a safety switch element 832. The safety switch element 832 of this embodiment is also a micro switch, which is arranged inside the handle 211 and at a position corresponding to the safety pressing part 831. This micro switch has a trigger reed. When the safety pressing part 831 is pressed down and touches this trigger reed, the nail firing switch element 832 generates a corresponding safety electrical signal, and this nail firing electrical signal is a voltage signal.

[0089] Meanwhile, the nail shooting switch 82 and the safety switch 83 are both disposed on the handle 211 and protrude outward from the handle 211 in the nail shooting direction, that is, protruding in the direction indicated by the arrow D1 in Figure 2 , and the safety switch 83 is disposed adjacent to the nail shooting switch 82. Therefore, when the user holds the handle 211, the user can simultaneously press the nail shooting switch 82 and the safety switch 83 with one hand. For example, the user presses the nail shooting switch 82 with the index finger and presses the safety switch 83 with the middle finger and the ring finger at the same time.

[0090] The energy storage stop switch 84 includes a stop pressing portion 841 and a stop switch element 842. The stop switch element 842 is also a micro switch, which is disposed at a predetermined energy storage completion position inside the main body housing 21, specifically on the side of the spring assembly 33, corresponding to the position of the piston 34 when the two-stage energy storage is completed, that is, Figure 9 the position of the piston 34 shown in. The micro switch has a trigger reed. When the stop pressing portion 841 is pushed and pressed to touch the trigger reed, the stop switch element 842 generates a corresponding stop electrical signal. The stop pressing portion 841 is a switch actuating member that matches the trigger reed and is inclined.

[0091] As Figure 4 shown, when the piston 34 is installed on the regulation frame 31, two abutting portions of the piston 34 protrude outward from the regulation frame 31 toward the drive wheel 37. Among them, the second abutting portion 3415 also extends in the direction of the stop pressing portion 841. Therefore, when the piston 34 reaches the corresponding position, the second abutting portion 3415 can abut against the stop pressing portion 841 and push the stop pressing portion 841, thereby triggering the micro switch.

[0092] The control module 85 controls the drive motor 38 according to the above-mentioned start electrical signal, mode switching electrical signal, nail shooting electrical signal, and safety electrical signal, so as to control the nail gun 10 to perform energy storage or nail shooting. The control module 85 is electrically connected to the drive motor 38, the power switch 81, the nail shooting switch 82, the safety switch 83, and the energy storage stop switch 84 respectively.

[0093] The control module 85 includes a control unit 851, a power management unit 852, a signal receiving unit 853, a signal determination unit 854, and a motor drive unit 855.

[0094] Figure 11 is the circuit structure diagram of the control circuit of the embodiment of the present invention.

[0095] As Figure 11As shown, the control unit 851 of this embodiment includes a control circuit 8511, and the control circuit 8511 includes a control chip U2 and a fixed-value capacitor C6. Among them, the model of the control chip U2 is DX021-SOP16, which has pins 1-16.

[0096] Pin 1 of the control chip U2 is connected to the access power supply, pin 16 of the control chip U2 is grounded, one end of the fixed-value capacitor C6 is connected to the access power supply, and the other end is grounded. Pins 2-15 of the control chip U2 are respectively connected to other circuits, which will be described in detail in combination with other circuits below.

[0097] Figure 12 is the circuit structure diagram of the battery management circuit of the embodiment of the present invention.

[0098] Figure 13 is the circuit structure diagram of the power conversion circuit of the embodiment of the present invention.

[0099] As Figure 12 and Figure 13 shown, the power management unit 852 of this embodiment includes a battery management circuit 8521 and a power conversion circuit 8522.

[0100] The battery management circuit 8521 performs charging management on the lithium battery 70 and plays a protective role for the lithium battery 70. The battery management circuit 8521 includes a terminal TP4, a terminal TP6, a charging control chip U3, a triode Q5, a triode Q6, a field effect transistor Q7, a field effect transistor Q8, a field effect transistor Q11, a field effect transistor Q12, a diode D1, a diode D2, a rectifier diode ZD1, a resistor R7, a resistor R10, resistors R11-R18, a resistor R21, a resistor R22, resistors R24-R28, resistors R30-R35, a fixed-value capacitor C4, fixed-value capacitors C7-C9, a fixed-value capacitor C10, a fixed-value capacitor C11, and the connection relationship of the above components is as Figure 11 shown. Among them, the terminal TP4 is connected to the positive electrode for charging the lithium battery 70, the terminal TP6 is connected to the negative electrode for charging the lithium battery 70, one end of the resistor R11 is connected to pin 12 of the control chip U2, and one end of the resistor R16 is connected to pin 6 of the control chip U2. The specific circuit structure and function of the battery management circuit 8521 are prior art and will not be described in detail.

[0101] The power conversion circuit 8522 converts the input power supply Vin from the lithium battery 70 into a stable access power supply VCC and a DC power supply Vad. The power conversion circuit 8522 includes a terminal TP1, a terminal TP5, a voltage regulator chip U1, a push switch S1, a triode Q1, a triode Q2, a diode D3, a diode D4, resistors R1-R6, a resistor R9, and capacitors C1-C3, and the connection relationship of the above components is as Figure 12As shown in the figure. Among them, terminal TP1 is connected to the positive electrode of the lithium battery 70, terminal TP5 is vacant, one end of resistor R4 and the positive electrode of diode D3 are connected to pin 4 of control chip U2, one end of resistor R9 is connected to pin 7 of control chip U2, and one end of resistor R6 and fixed capacitor C3 are connected in parallel and then one end is connected to pin 15 of control chip U2. The specific circuit structure and function of the power conversion circuit 8522 are prior art and will not be described in detail.

[0102] The signal receiving unit 853 is used to receive the electrical signals generated by the above-mentioned various switches, including: receiving a start electrical signal when the power switch 81 is pressed; receiving a nail-firing electrical signal when the nail-firing switch 82 is pressed; receiving a safety electrical signal when the safety switch 83 is pressed; receiving a stop electrical signal when the energy storage stop switch 84 is pushed down.

[0103] Figure 14 It is the circuit structure diagram of the voltage sampling circuit for nail-firing in the embodiment of the present invention.

[0104] Figure 15 It is the circuit structure diagram of the voltage sampling circuit for safety in the embodiment of the present invention.

[0105] Figure 16 It is the circuit structure diagram of the voltage sampling circuit for stop in the embodiment of the present invention.

[0106] As Figures 13-16 shown, the signal receiving unit 853 of this embodiment includes a start voltage sampling circuit 8531, a nail-firing voltage sampling circuit 8532, a safety voltage sampling circuit 8533, and a stop voltage sampling circuit 8534.

[0107] As Figure 13 shown, the start voltage sampling circuit 8531 is a part of the power conversion circuit 8522, so it will not be described repeatedly. The start electrical signal is obtained through the start voltage sampling circuit 8531 when the push switch S1 is pressed.

[0108] As Figure 14 shown, the nail-firing voltage sampling circuit 8532 includes pins 3 and 4 of terminal P1, resistor R39, and fixed capacitor C13. Terminal P1 is connected to the nail-firing switch element 822 and pins 3 and 4 of terminal P1 respectively correspond to the two output terminals of the nail-firing switch element 822. Pin 3 of terminal P1 is grounded, pin 4 of terminal P1 is connected to both one end of resistor R39 and pin 14 of control chip U2, and one end of fixed capacitor C13 is connected to pin 4 of terminal P1, and the other end of fixed capacitor C13 is grounded.

[0109] The nail-firing electrical signal is obtained through the nail-firing voltage sampling circuit 8532 when the nail-firing pressing part 821 is pressed.

[0110] As shown Figure 15 in FIG. 1, the safety voltage sampling circuit 8533 includes pins 5 and 6 of terminal P1, resistor R38, and fixed-value capacitor C12. Terminal P1 is connected to the safety switch element 832, and pins 5 and 6 of terminal P1 respectively correspond to the two output terminals of the safety switch element 822. Pin 5 of terminal P1 is grounded, pin 6 of terminal P1 is connected to both one end of resistor R38 and pin 11 of control chip U2, one end of fixed-value capacitor C12 is connected to pin 6 of terminal P1, and the other end of fixed-value capacitor C12 is grounded.

[0111] A safety electrical signal is obtained through the safety voltage sampling circuit 8533 when the safety pressing portion 831 is pressed.

[0112] As shown Figure 16 in FIG. 2, the stop voltage sampling circuit 8534 includes pins 1 and 2 of terminal P1, resistor R40, and fixed-value capacitor C14. Terminal P1 is connected to the stop switch element 842, and pins 1 and 2 of terminal P1 respectively correspond to the two output terminals of the stop switch element 842. Pin 1 of terminal P1 is grounded, pin 2 of terminal P1 is connected to both one end of resistor R40 and pin 9 of control chip U2, one end of fixed-value capacitor C14 is connected to pin 2 of terminal P1, and the other end of fixed-value capacitor C12 is grounded.

[0113] A stop electrical signal is obtained through the stop voltage sampling circuit 8534 when the stop pushing portion 841 is pushed down.

[0114] The signal determination unit 854 determines the validity of each of the above electrical signals received by the signal receiving unit 853 according to a predetermined signal reception rule. In this embodiment, the control chip U2 is a programmable MCU, and the signal determination unit 854 includes a pre-written program stored in the control chip U2. This program includes a predetermined value of the unit time and a predetermined signal determination rule. The signal determination rule is specifically:

[0115] Determine the repeated / long-pass nail shooting electrical signal as only receiving the first nail shooting electrical signal within the corresponding unit time;

[0116] Determine the repeated safety electrical signal as only receiving the first safety electrical signal within the corresponding unit time, and determine the long-pass safety electrical signal as only receiving the first safety electrical signal;

[0117] Determine the repeated stop electrical signal as only receiving the first stop electrical signal within the corresponding unit time, and determine the long-pass stop electrical signal as only receiving the first stop electrical signal;

[0118] After receiving the start electrical signal, shield the stop electrical signals received within one unit time;

[0119] After receiving the start electrical signal, it is determined that the stop electrical signal is received whether or not the stop electrical signal is received after 1.1 - 1.5 unit times.

[0120] That is, when the user needs to perform continuous nail shooting, the nail shooting switch 82 can be long - pressed, while the safety switch 83 needs to be released and pressed again each time for nail shooting. Long - pressing the safety switch 83 cannot achieve the continuous nail shooting effect.

[0121] The motor control unit 855 controls the start or stop of the motor 381 according to the received and valid start electrical signal, nail shooting electrical signal, safety electrical signal, and stop electrical signal, specifically including:

[0122] Control the motor 381 to start when receiving the start electrical signal;

[0123] Control the motor 381 to stop when receiving the stop electrical signal;

[0124] Control the motor 381 to start when receiving the nail shooting electrical signal and the safety electrical signal simultaneously.

[0125] Figure 17 It is the circuit structure diagram of the motor connection circuit of the embodiment of the present invention.

[0126] Such as Figure 17 As shown, the motor control unit 855 includes a pre - written program in the control chip U2 and the motor connection circuit 8551. The motor connection circuit 8551 includes a terminal P2. The terminal P2 is used to connect the motor 381 and has pins 1 - 5. The pin 1 of the terminal P1 is connected to the access power supply VCC, the pin 2 of the terminal P2 is connected to the pin 15 of the control chip U2, the pin 3 of the terminal P2 is connected to the pin 2 of the control chip U2, the pin 4 of the terminal P2 is connected to the pin 4 of the control chip U2, and the pin 5 of the terminal P2 is grounded.

[0127] The nail shooting control device 80 further includes a plurality of LED indicators and corresponding indicator driving circuits not shown in the figure. The plurality of LED indicators are used to indicate the working state of the nail gun 10, and can specifically adopt the settings in the prior art.

[0128] Figure 18 It is the working flow chart for performing one nail shooting in the embodiment of the present invention.

[0129] Such as Figure 18 As shown, based on the above - mentioned nail shooting control device 80, the process for the user to hold the nail gun 10 to perform one nail shooting includes the following steps:

[0130] Step S1-1: The user aims the gun nozzle 50 at the target and then presses the nail firing switch 82 and the safety switch 83 simultaneously, generating a nail firing electrical signal and a safety electrical signal.

[0131] Step S1-2: The signal receiving unit 853 receives the nail firing electrical signal and the safety electrical signal.

[0132] Step S1-3: The signal determination unit 854 determines whether both the nail firing electrical signal and the safety electrical signal are valid. If the determination is yes, proceed to Step S1-4; if the determination is no, enter the end state.

[0133] Step S1-4: The motor control unit 855 controls the driving motor 38 to start and drives the driving wheel 37 to rotate.

[0134] Step S1-5: When the driving wheel 37 rotates until the first pushing protrusion 3711 disengages from the first abutting end 345, the piston 34 drives the firing pin 40 to eject the nail, and then enter the end state.

[0135] In the above steps, the initial state of the nail gun 10 is the energy storage completed state, so the user can directly fire nails.

[0136] Figure 19 It is the flowchart of the continuous nail firing operation in the embodiment of the present invention.

[0137] As Figure 19 shown, based on the above nail firing control device 80, the process of the user holding the nail gun 10 for continuous nail firing includes the following steps:

[0138] Step S2-1: The user long presses the nail firing switch 82 to generate a continuously on nail firing electrical signal, and then proceed to Step S2-2.

[0139] Step S2-2: The user determines whether to continue firing nails. If the determination is yes, proceed to Step S2-3; if the determination is no, enter the end state.

[0140] Step S2-3: After the user aims the gun nozzle 50 at the target, press the safety switch 83 to generate a safety electrical signal, and then proceed to Step S2-4.

[0141] Step S2-4: The signal receiving unit 853 receives the nail firing electrical signal and the safety electrical signal, and then proceed to Step S2-4.

[0142] Step S2-5: The signal determination unit 854 determines whether both the nail firing electrical signal and the safety electrical signal are valid. If the determination is yes, proceed to Step S2-6; if the determination is no, return to Step S2-2.

[0143] Step S2-6, the motor control unit 855 controls the driving motor 38 to start, drives the driving wheel 37 to rotate, and then proceeds to step S2-7;

[0144] Step S2-7, the driving wheel 37 rotates until the first pushing protrusion 3711 disengages from the first pushing end 345, and the piston 34 drives the firing pin 40 to eject the nail, and then proceeds to step S2-8;

[0145] Step S2-8, the driving motor 38 drives the driving wheel 37 to continue rotating for the first-stage energy storage, and then proceeds to step S2-9;

[0146] Step S2-9, the driving motor 38 drives the driving wheel 37 to continue rotating for the second-stage energy storage, and then proceeds to step S2-10;

[0147] Step S2-10, the piston 34 reaches the predetermined energy storage completion position, and the first pushing end 345 presses the energy storage stop switch 84 to generate a stop electrical signal, and then proceeds to step S2-11;

[0148] Step S2-11, the signal receiving unit 853 receives the stop electrical signal, and then proceeds to step S2-12;

[0149] Step S2-12, the signal determination unit 854 determines that the stop electrical signal is valid, and then proceeds to step S2-13;

[0150] Step S2-13, the motor control unit 855 controls the driving motor 38 to stop, and then returns to step S2-2.

[0151] In the above steps, steps S2-1 to S2-6 complete one nail firing, and steps S2-7 to S2-12 pre-complete the energy storage steps for the next nail firing. When the nail gun 10 automatically performs steps S2-6 to S2-12, the user can carry the nail gun 10 to move to the next nail firing position for efficient and continuous nail firing. The user can also put down the nail gun 10 to perform other tasks, which does not affect the progress of the energy storage steps of the nail gun 10.

[0152] Meanwhile, in step 2-5 above, when the judgment is negative, the nail gun 10 does not fire nails, and the LED indicator will have corresponding displays. The user can know this situation by observing the non-nail ejection situation and the display of the LED indicator, and can re-attempt to press the double switch to trigger nail firing.

[0153] <Variant Example>

[0154] This variant example provides a nail firing control device and a nail gun, which are more convenient to operate and do not affect safety and nail firing effect. Compared with the above embodiment, the difference is that in this variant example, the pre-programmed signal determination rule is:

[0155] Determine that repeated nail firing electrical signals are only the first nail firing electrical signal received within the corresponding unit time, and determine that a long-on nail firing electrical signal is only the first nail firing electrical signal received;

[0156] Determine that repeated / long-on safety electrical signals are only the first safety electrical signal received within the corresponding unit time;

[0157] Determine that repeated stop electrical signals are only the first stop electrical signal received within the corresponding unit time, and determine that a long-on stop electrical signal is only the first stop electrical signal received;

[0158] After receiving the start electrical signal, shield the stop electrical signals received within one unit time;

[0159] After receiving the start electrical signal, determine that a stop electrical signal is received whether or not a stop electrical signal is received 1.1 - 1.5 unit times later.

[0160] That is, when the user needs to perform continuous nail firing, the safety switch 83 can be long - pressed, while the nail firing switch 82 needs to be released and pressed again each time for nail firing. Long - pressing the nail firing switch 82 cannot achieve the effect of continuous nail firing.

[0161] In this modification example, other structures and working principles are the same as those in the above - mentioned embodiment, so no repeated description will be given.

[0162] Functions and Effects of the Embodiment

[0163] According to the nail firing control device 80 and the nail gun 10 provided in this embodiment, the nail firing control device 80 includes a nail firing switch 82, a safety switch 83, and a control module 85. The control module 85 is electrically connected to the drive motor 38, the nail firing switch 82, and the safety switch 83 respectively. Therefore, the control module 85 can control the drive motor 38 of the nail gun 10 according to the nail firing electrical signals and safety electrical signals generated by pressing the nail firing switch 82 and the safety switch 83. When both the nail firing electrical signal and the safety electrical signal are received and both signals are valid, the drive motor 38 is controlled to start, thereby performing nail firing. Since the nail firing pressing part 821 of the nail firing switch 82 and the safety pressing part 831 of the safety switch 83 are both arranged on the handle 211 of the nail gun 10, and the safety pressing part 831 is arranged near the nail firing pressing part 821, and the corresponding nail firing switch element 822 and safety switch element 832 are arranged inside the handle 211, when the user holds the nail gun 10, the user can use one hand to simultaneously press the nail firing switch 82 and the safety switch 83 for nail firing, which is very convenient and greatly improves the work efficiency. At the same time, since the nail firing control device 80 still adopts a double - switch and double - insurance design, the safety during nail firing is also ensured.

[0164] Furthermore, the nail shooting control device 80 further includes an energy storage stop switch 84 electrically connected to the control module 85. The energy storage stop switch 84 includes a stop pressing portion 841 and a stop switch element 842. The stop pressing portion 841 is arranged at a predetermined energy storage completion position near the spring assembly 33. After the second-stage energy storage is completed, the first abutting end 345 of the piston 34 abuts against and presses the stop pressing portion 841, so as to cause the corresponding stop switch element 842 to generate a stop electrical signal. Therefore, the nail shooting control device 80 can also control the driving motor 38 to stop when the nail gun 10 completes two-stage energy storage according to the stop electrical signal, so that the nail gun 10 remains in the energy storage completion state.

[0165] Furthermore, the control module 85 includes a signal receiving unit 853, a signal determination unit 854, and a motor control unit 855. Due to the presence of the signal receiving unit 853, corresponding electrical signals can be sampled from each micro switch. Due to the presence of the signal determination unit 854, the validity of the received electrical signal can be determined according to a predetermined unit time and signal receiving rule. The repeatedly received and long-connected electrical signals are regarded as receiving a signal once or receiving a signal once within the unit time according to the predetermined signal receiving rule. Therefore, misoperations caused by repeated and long-connected signals can be avoided, and it also provides convenience for the user's operation. For example, the user can long-press the nail shooting switch 82 and then intermittently press the safety switch 83 to perform multiple consecutive nail shootings. Also due to the presence of the motor control unit 855, the driving motor 38 can be controlled to start or stop according to the received valid electrical signal, so as to perform nail shooting or energy storage.

[0166] Furthermore, through the nail shooting control device 80 of this embodiment, the nail gun 10 can automatically start energy storage when the power switch 81 is pressed, that is, at startup, and remain in the energy storage completion state. Therefore, when the user presses the double switch during nail shooting, nails can be directly ejected without waiting. Similarly, the nail gun 10 will automatically start energy storage after completing one nail shooting, so the production efficiency is improved and the user experience is enhanced. At the same time, since the nail gun 10 initially remains in the energy storage state, at this time, the firing pin 40 is accommodated in the nozzle 50 and does not protrude outwards, so the user can position more accurately. In addition, since the nail gun 10 automatically performs energy storage when starting up and after completing one nail shooting, and the energy storage process does not require manual intervention, the user can also use the time of this energy storage to move to a target position. Therefore, a large amount of time is saved when continuous nail shooting is required, and the work efficiency is improved.

[0167] The above embodiments are only used to illustrate the specific implementation manners of the present invention, and the present invention is not limited to the description scope of the above embodiments.

Claims

1. A nail shooting control device is arranged in a nail gun having a housing which includes a handle for the user to hold, and is used to control the start or stop of the driving motor of the nail gun. It is characterized in that, Comprising: A nail firing switch, having a nail firing pressing portion and a nail firing switch element, which generates a nail firing electrical signal when the nail firing pressing portion is pressed; A safety switch, having a safety pressing portion and a safety switch element, which generates a safety electrical signal when the safety pressing portion is pressed; An energy storage stop switch, having a stop pushing portion and a stop switch element, which generates a stop electrical signal when the stop pushing portion is pushed and pressed; And A control module, electrically connected to the driving motor, the nail firing switch element, the safety switch element, and the stop switch element respectively, wherein the nail firing switch and the safety switch are both provided on the handle, and the safety switch is provided near the nail firing switch, the nail firing switch element is provided at a position corresponding to the nail firing pressing portion inside the handle, the safety switch element is provided at a position corresponding to the safety pressing portion inside the handle, the control module includes: A signal receiving unit, for receiving the nail firing electrical signal, the safety electrical signal, and the stop electrical signal; A signal determination unit, for determining the validity of the nail firing electrical signal, the safety electrical signal, and the stop electrical signal received by the signal receiving unit according to a predetermined unit time and a predetermined signal receiving rule; and A motor control unit, for controlling the driving motor to start when the signal receiving unit receives both the nail firing electrical signal and the safety electrical signal, and for controlling the driving motor to stop when the signal receiving unit receives the stop electrical signal, wherein the signal determination unit determines the repeated / continuously-conducted nail firing electrical signal as receiving the first nail firing electrical signal within the corresponding unit time, determines the repeated safety electrical signal as receiving the first safety electrical signal within the corresponding unit time, determines the continuously-conducted safety electrical signal as only receiving the first safety electrical signal, determines the repeated stop electrical signal as receiving the first stop electrical signal within the corresponding unit time, and determines the continuously-conducted stop electrical signal as only receiving the first stop electrical signal.

2. A nail shooting control device is arranged in a nail gun having a housing which includes a handle for the user to hold, and is used to control the start or stop of the driving motor of the nail gun. It is characterized in that, Comprising: A nail firing switch, having a nail firing pressing portion and a nail firing switch element, which generates a nail firing electrical signal when the nail firing pressing portion is pressed; A safety switch, having a safety pressing portion and a safety switch element, which generates a safety electrical signal when the safety pressing portion is pressed; An energy storage stop switch, having a stop pushing portion and a stop switch element, which generates a stop electrical signal when the stop pushing portion is pushed and pressed; And A control module, electrically connected to the driving motor, the nail firing switch element, the safety switch element, and the stop switch element respectively, wherein the nail firing switch and the safety switch are both provided on the handle, and the safety switch is provided near the nail firing switch, the nail firing switch element is provided at a position corresponding to the nail firing pressing portion inside the handle, The safety switch element is arranged at a position in the handle corresponding to the safety pressing part. The control module includes: A signal receiving unit for receiving the nail shooting electrical signal, the safety electrical signal, and the stop electrical signal; A signal determination unit for determining the validity of the nail shooting electrical signal, the safety electrical signal, and the stop electrical signal received by the signal receiving unit according to a predetermined unit time and a predetermined signal receiving rule; and A motor control unit for controlling the driving motor to start when the signal receiving unit receives both the nail shooting electrical signal and the safety electrical signal, and for controlling the driving motor to stop when the signal receiving unit receives the stop electrical signal. Wherein, the signal determination unit determines the repeated nail shooting electrical signal as receiving the first nail shooting electrical signal within the corresponding unit time, and determines the continuously-conducted nail shooting electrical signal as only receiving the first nail shooting electrical signal. The repeated / continuously-conducted safety electrical signal is determined as receiving the first safety electrical signal within the corresponding unit time. The repeated stop electrical signal is determined as receiving the first stop electrical signal within the corresponding unit time, and the continuously-conducted stop electrical signal is determined as only receiving the first stop electrical signal.

3. The nail shooting control device according to claim 1 or 2, wherein the nail gun has a firing pin for hitting a nail, a piston for driving the firing pin to move, and a power supply spring for providing power to the piston, and is characterized in that: Wherein, The piston has a pushing part extending towards the stop pushing part for pushing the stop pushing part. The stop pushing part is arranged at a predetermined energy storage completion position beside the force supply spring, and the stop switch element is arranged at a position corresponding to the stop pushing part.

4. The nail shooting control device according to claim 3, and is characterized in that: Wherein, The nail shooting switch element, the safety switch element, and the stop switch element are all microswitches.

5. The nail shooting control device according to claim 4, and is characterized in that: Wherein, The control module includes a programmable control chip. The model of the control chip is DX021-SOP16.

6. The nail shooting control device according to claim 1 or 2, and is characterized in that, It further includes: A power switch. Wherein, when the power switch is pressed, the signal determination unit shields the stop electrical signal received within 1 unit time and regards it as receiving the stop electrical signal after 1.1 - 1.5 unit times.

7. A nail gun, and is characterized in that, It at least includes: A driving motor; And A nail shooting control device electrically connected to the driving motor for controlling the start and stop of the driving motor. Wherein, the nail shooting control device is the nail shooting control device according to any one of claims 1 - 6.

8. The nail gun according to claim 7, and is characterized in that, It further includes: A one-way bearing installed at the output end of the driving motor.

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