Nail shooting control device and nail gun

Abstract

The application provides a nail shooting control device and a nail gun, which comprise a nail shooting switch, an energy storage stop switch, a mode switching switch and a control module. The control module comprises a signal receiving unit, a working mode determining unit and a motor control unit. The motor can be controlled according to the electric signals generated by the multiple switches. When the nail shooting switch is triggered in the normal working mode, the control module receives the nail shooting electric signal and controls the motor to start. Until the energy storage stop switch is triggered by the piston, the control module receives the stop electric signal and controls the motor to stop. Therefore, after the nail shooting, the piston can continue to drive the force spring to store energy, and the next nail shooting does not need to wait for the energy storage process. When the mode switching switch is triggered, the control module switches to the maintenance mode. When the nail shooting electric signal is received in the mode, the motor is controlled to start and stop after a predetermined time. Therefore, the piston in the high position can be released, and the safety of the user when maintaining the nail gun is improved.

Description

Technical Field

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

[0002] A nail gun is a fastening tool that is mostly used in construction. At present, a widely used nail gun is an electric nail gun that uses a lithium battery. This nail gun uses a driving motor and a corresponding transmission structure to push the piston, and then the piston compresses the force supply spring to store energy. When shooting a nail, the force supply spring drives the piston to move, and then drives the firing pin installed on the piston to strike and shoot the nail out.

[0003] The initial state of most electric nail guns is a non-energy-storage state, that is, the spring is in a non-compressed state. After the user presses the trigger switch, it takes a long time for the energy storage process to fire the nail, which makes the user feel that the nail gun is slow to respond. To solve this problem, CN216608882U discloses a nail control device and a nail gun. The nail control device controls the nail gun to automatically start energy storage upon startup and maintain it in the energy storage state. The user can directly fire the nail by pressing the double switch. However, because the initial state of this nail gun is the energy storage state, the compressed spring creates a safety hazard when the user performs maintenance on it, which may cause injury to the user during the disassembly and assembly process for maintenance. Summary of the Invention

[0004] The present invention is made to solve the above-mentioned problems and aims to provide a nail-shooting control device with a maintenance mode. When entering the maintenance mode, the spring is in a non-compressed state, thereby improving the safety of the user when maintaining the nail gun. The present invention adopts the following technical solutions:

[0005] The present application provides a nail shooting control device, which is arranged in a nail gun with a motor, a piston and a force spring, and is used for controlling the start and stop of the motor, the motor is used for driving the piston to move, so as to shoot nails and compress the force spring to store energy after shooting nails, and the device is characterized in that it comprises: a nail shooting switch, which comprises a nail shooting pressing part and a nail shooting switch element, the nail shooting switch element generates a nail shooting electric signal when the nail shooting pressing part is pressed; an energy storage stop switch, which comprises a stop pressing part arranged on the moving path of the piston and a stop switch element, the stop switch element generates a stop electric signal when the stop pressing part is pressed by the piston; a mode switching switch, which comprises a mode switching button and a mode switching switch element, the mode switching switch element generates a mode switching electric signal when the mode switching button is pressed; and a control module, which is used for controlling the driving motor, and comprises: a signal receiving unit, which is used for receiving the nail shooting electric signal, the stop electric signal and the mode switching electric signal; a working mode determining unit, which determines a maintenance mode when the mode switch electric signal is received for a long time, and determines a normal working mode when the mode switch electric signal is not received; and a motor control unit, which controls the motor to start when the nail shooting electric signal is received in the normal working mode, controls the motor to stop when the stop electric signal is received, and controls the motor to start and stop after a predetermined time when the nail shooting electric signal is received in the maintenance mode.

[0006] The nail shooting control device provided by the present application can also have the following technical features: the control module further stores a predetermined unit time value, one unit time is the time for the motor to drive the piston to shoot nails and store energy once, including the time T2 from the energy storage completion state to the start shooting state and the time T3 from the start shooting state to the shooting completion state, and the predetermined time is T5, T2 < T5 ≤ T2 + T3.

[0007] The nail shooting control device provided by the present application can also have the following technical features: the device further comprises two indicator lights, which are used for indicating the working mode of the nail gun, and the control module further comprises an indicator light control unit, which controls the two indicator lights to flash alternately in the maintenance mode.

[0008] The nail shooting control device provided by the present application can also have the following technical features: the control module further comprises a signal determining unit, which is used for determining the validity of the electric signal received by the signal receiving unit according to a predetermined signal determining rule, and the signal determining rule comprises: determining the mode switch electric signal with a long pass of more than one second as the mode switching electric signal being received; and shielding the received stop electric signal after the mode switching electric signal is received.

[0009] The nail shooting control device provided by the present invention may also have such a technical feature, wherein the signal judgment rule also includes: judging the repeated / long-lasting nail shooting electrical signal as only receiving the first nail shooting electrical signal within the corresponding unit time; and judging the repeated stop electrical signal as only receiving the first stop electrical signal within the corresponding unit time, and judging the long-lasting stop electrical signal as only receiving the first stop electrical signal.

[0010] The nail shooting control device provided by the present invention may also have such technical features, and also includes: a power switch, including a power button and a power switch element, the power switch element generates a start electrical signal when the power button is pressed, wherein the signal judgment rule also includes: after receiving the start electrical signal, shielding the stop electrical signal received within 1 unit time; and after receiving the start electrical signal, after 1.1-1.5 unit times, regardless of whether the stop electrical signal is received, it is determined that the stop electrical signal is received, and the motor control unit also controls the motor to start when the start electrical signal is received.

[0011] The nail-shooting control device provided by the present invention may also have such technical features, and also includes: a safety switch, including a safety pressing piece and a safety switching element, wherein the safety switching element generates a safety electrical signal when the safety pressing piece is pressed, wherein the signal judgment rule also includes: judging the repeated safety electrical signal as only receiving the first safety electrical signal within the corresponding unit time, judging the long-passing safety electrical signal as only receiving the first safety electrical signal, the motor control unit controls the motor to start when it receives the nail-shooting electrical signal and the safety electrical signal at the same time in the normal working mode, and controls the motor to start when it receives the nail-shooting electrical signal and the safety electrical signal at the same time in the maintenance mode, and controls the motor to stop after the predetermined time.

[0012] The nail shooting control device provided by the present invention may also have such technical features, wherein the nail shooting switch element and the safety switch element are both micro switches, and the middle part of the micro switch has two mounting holes. The nail gun includes a shell, which includes a left shell and a right shell that match each other. The inner surface of one of the left shell and the right shell is formed with two element fixing parts for fixing the two micro switches, and the inner surface of the other is formed with two element limiting parts for press-fitting and limiting the two micro switches fixed on the element fixing parts. The element fixing part includes: two columnar protrusions, which match the two mounting holes of the micro switch; and a plurality of strip-shaped protrusions, distributed around the two columnar protrusions, which are used to limit the side edges of the micro switch fixed on the columnar protrusions, and the element limiting part is a grid-shaped protrusion.

[0013] The nail shooting control device provided by the present invention may also have such a technical feature, wherein the nail gun includes a shell, the shell has a handle portion for the user to hold, the nail shooting pressing piece is arranged on the handle portion, and the safety pressing piece is arranged on the handle portion and is located near the nail shooting pressing piece.

[0014] The present invention provides a nail gun, characterized in that it includes: a piston for shooting nails; a force supply spring for supplying force for the movement of the piston; a motor for driving the piston to move, thereby shooting nails or compressing the force supply spring for energy storage; and the above-mentioned nail shooting control device for controlling the start and stop of the motor.

[0015] Functions and effects of the invention

[0016] The nail-shooting control device and nail gun according to the present invention include a nail-shooting switch, an energy storage stop switch, a mode switch, and a control module. The control module includes a signal receiving unit, an operating mode determination unit, and a motor control unit. The control module is capable of controlling the motor based on electrical signals generated by the multiple switches. In normal operating mode, when the nail-shooting switch is triggered, the control module receives the nail-shooting electrical signal and controls the motor to start. The control module receives the stop electrical signal and controls the motor to stop until the energy storage stop switch is triggered by the piston. This allows the piston to be driven once for a nail-shooting operation, and after that, the piston continues to be driven to move and compress the supply spring to store energy, eliminating the need for the user to wait for the energy storage process before the next nail-shooting operation. Furthermore, when the mode switch is triggered, the control module switches to a maintenance mode. In this maintenance mode, upon receiving the nail-shooting electrical signal, the control module controls the motor to start and stop after a predetermined time. This allows the piston to be released when it reaches the energy storage completion position (high position), improving user safety when maintaining the nail gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural block diagram of a nail gun according to an embodiment of the present invention;

[0018] Figure 2 is a perspective view of a nail gun according to an embodiment of the present invention;

[0019] Figure 3 This is a side view of the structure of the nail gun in the embodiment of the present invention. Figure 1 ;

[0020] Figure 4 is a perspective view of a striker drive mechanism according to an embodiment of the present invention;

[0021] Figure 5 is an exploded view of the structure of the striker drive mechanism in an embodiment of the present invention;

[0022] Figure 6 This is a structural diagram of a driving wheel and a piston cooperating to store energy in an embodiment of the present invention;

[0023] Figure 7 This is a structural diagram of the drive wheel and piston cooperating to perform two-stage energy storage in an embodiment of the present invention;

[0024] Figure 8 This is a structural diagram of the striker drive mechanism completing two-stage energy storage in an embodiment of the present invention;

[0025] Figure 9 This is a side view of the structure of the nail gun in the embodiment of the present invention. Figure 2 ;

[0026] Figure 10 is a perspective view of the left housing in an embodiment of the present invention;

[0027] Figure 11 is a perspective view of the right housing in an embodiment of the present invention;

[0028] Figure 12 4 is a flow chart of releasing the piston in maintenance mode according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] Nail gun 10; housing 20; left housing 21; right housing 22; handle 211; base 212; component fixing portion 213; component limiting portion 214; firing pin baffle 23; firing pin drive mechanism 30; regulating frame 31; guide rod 32; spring assembly 33; piston 34; rolling element 35; buffer 36; drive wheel 37; drive motor 38; one-way bearing 39; firing pin 40; gun nozzle 50; nail magazine 60; lithium battery 70; nail shooting control device 80; power switch 81; power button 811; left indicator light 812; right indicator light 813; nail shooting switch 82; Pressing piece 821 for nail shooting; switching element 822 for nail shooting; resetting piece 823 for nail shooting; safety switch 83; pressing piece 831 for safety; switching element 832 for safety; resetting piece 833 for safety; energy storage stop switch 84; pushing piece 841 for stop; switching element 842 for stop; mode switching switch 85; mode switching button 851; control module 86; control unit 861; power management unit 862; signal receiving unit 863; signal determination unit 864; working mode determination unit 865; motor control unit 866; indicator light control unit 867. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the nail control device and nail gun of the present invention are described in detail below with reference to the embodiments and drawings.

[0032] <Example>

[0033] Figure 1 It is a structural block diagram of the nail gun in this embodiment.

[0034] Figure 2 It is a three-dimensional diagram of the nail gun in this embodiment.

[0035] Figure 3 This is a side view of the nail gun structure in this embodiment. Figure 1 , to show the internal structure, Figure 3 The right case is omitted.

[0036] like Figure 1-Figure 3 As shown, the nail gun 10 includes a housing 20 , a firing pin driving mechanism 30 , a firing pin 40 , a nozzle 50 , a nail magazine 60 , a lithium battery 70 and a nail shooting control device 80 .

[0037] The shell 20 includes a left shell 21 and a right shell 22 that match each other. The two can be assembled facing each other to form an integral shell. After assembly, a roughly rectangular replacement opening is formed on the upper part of the shell. The shell 20 also includes a striker baffle 23, which can be detachably installed at the replacement opening.

[0038] The housing 20 includes a handle 211 for the user to grip and a base 212 connected to the handle 211. Both the handle 211 and the base 212 are hollow structures. The handle 211 has two openings on the inner side for mounting two trigger members. The base 212 has another opening on the inner side for mounting the power switch unit.

[0039] The firing pin driving mechanism 30 is used to drive the firing pin 40 to strike the nail, thereby causing the nail to be ejected from the gun nozzle 50 .

[0040] Figure 4 2 is a perspective view of the striker drive mechanism in this embodiment.

[0041] Figure 5 1 is an exploded view of the structure of the striker drive mechanism in this embodiment.

[0042] like Figure 4 、 Figure 5 As shown, the striker drive mechanism 30 includes a regulating frame 31 , a guide rod 32 , a spring assembly 33 , a piston 34 , a pair of rolling elements 35 , a buffer element 36 , a drive wheel 37 , a drive motor 38 and a one-way bearing 39 .

[0043] The guide rod 32 is mounted within the control frame 31. The piston 34 is mounted on the guide rod 32 and positioned within the control frame 31, allowing it to move along the extension of the guide rod 32. The spring assembly 33 comprises two springs, each with one end abutting against one end within the control frame 31 and the other end abutting against the piston 34. The piston 34 does not directly contact the control frame 31. Instead, a pair of rolling elements 35 connect the piston 34 to the control frame 31 on either side, reducing resistance to the piston's movement. A buffer element 36 is mounted at the other end within the control frame 31 to cushion the piston 34 during nailing.

[0044] The driving wheel 37 is provided with two pushing protrusions of different heights, which can respectively cooperate with the two protrusions on the side of the piston 34. Under the drive of the driving motor 38, the driving wheel 37 rotates, and the two pushing protrusions on the driving wheel 37 sequentially abut against the two protrusions of the piston 34, pushing the piston 34 toward the spring assembly 33 to move in two stages, thereby compressing the spring to store energy.

[0045] The drive motor 38 includes a motor 381 and a deceleration and torque-increasing unit 382. The deceleration and torque-increasing unit 382 is used to increase the driving force of the motor 381. The one-way bearing 39 allows the output end of the drive motor 38 to rotate in only one direction.

[0046] The specific structure of the striker drive mechanism 30 can be found in the description in CN216608882U and will not be described in detail.

[0047] Figure 6 This is a structural diagram of the drive wheel and piston cooperating to store energy in this embodiment.

[0048] like Figure 6 As shown, the driving wheel 37 includes a wheel body 371 and a first pushing protrusion 3711 and a second pushing protrusion 3712, both of which are cylindrical protrusions, mounted on one surface of the wheel body 371. The side of the piston 34 has a first pushing end 345 and a second pushing end 346 that are adapted to the two pushing protrusions.

[0049] As the driving wheel 37 rotates, the second pushing protrusion 3712 first abuts against the second pushing end 346 of the piston 34 and pushes the piston 34 toward the spring, completing the first stage of energy storage.

[0050] Figure 7 This is a structural diagram of the drive wheel and piston cooperating to perform two-stage energy storage in this embodiment.

[0051] Figure 8 It is a structural diagram of the striker drive mechanism completing the second stage of energy storage in this embodiment.

[0052] like Figure 7 、 Figure 8As shown, after completing a stage of energy storage, the motor 381 drives the driving wheel 37 to continue rotating, and the second pushing protrusion 3712 disengages from the second pushing end 346. At the same time, the first pushing protrusion 3711 abuts against the first pushing end 345 and pushes the piston 34 to move further toward the spring, completing the second stage of energy storage. After completing the two stages of energy storage, the piston 34 remains at Figure 8 This position is recorded as the high position.

[0053] After completing the two stages of energy storage, when firing a nail, the drive motor 38 drives the drive wheel 37 to continue rotating, causing the first push protrusion 3711 to rotate and disengage from the first push end 345. At this point, both the first push protrusion 3711 and the second push protrusion 3712 are outside the movement path of the piston 34. The piston 34, under the elastic force of the spring assembly 33, moves in the direction of firing the nail until it strikes the buffer 36, completing the nail firing process. Under the action of the spring force, the piston 34 first quickly drives the firing pin 40 to strike the nail, then moves relatively slowly to the buffer 36. This position is recorded as the stop position. The position where the piston 34 has fired but has not yet reached the stop position is recorded as the low position.

[0054] The firing pin 40 is detachably mounted on the side of the piston 34 and is used to strike the nail at the gun nozzle 50 to eject the nail.

[0055] The gun mouth 50 is used to accommodate the nails to be fired and plays a limiting and guiding role for the firing pin 40 during the nail shooting process. The nail box 60 is used to store nails and supply the stored nails to the gun mouth 50 in sequence.

[0056] The lithium battery 70 provides electrical energy for the drive motor 38 .

[0057] The nail shooting control device 80 controls the driving motor 38 based on the operation of a plurality of switches, thereby controlling the nail gun 10 to store energy or shoot nails.

[0058] Figure 9 This is a side view of the nail gun structure in this embodiment. Figure 2 , to show the internal structure, Figure 9 The left housing is omitted.

[0059] like Figure 3 、 Figure 9 As shown, the nail shooting control device 80 includes a power switch 81 , a nail shooting switch 82 , a safety switch 83 , an energy storage stop switch 84 , a mode switching switch 85 and a control module 86 .

[0060] The power switch 81 is a button-type switch, and the structure can refer to that in the prior art. It includes a power button 811 and a power switch element (not shown in the figure). When the power button 811 is pressed, the power switch element generates a corresponding start-up electrical signal.

[0061] The mode switching switch 85 is also a button-type switch, including a mode switching button 851 and a mode switching switch element. When the mode switching button 851 is pressed, the mode switching switch element generates a corresponding mode switching electrical signal.

[0062] In this embodiment, the power switch 81 and mode switch 85 are integrated into a power switch unit. The switch components are housed in a housing that fits within the opening of the base 212. The power button 811 and mode switch button 851 are exposed through corresponding openings above the housing. The power switch unit also includes a left indicator light 812 and a right indicator light 813, both LED lights, that indicate the operating status of the nail gun 10. These two indicators are also exposed through corresponding openings above the housing.

[0063] The nail-shooting switch 82 is a trigger-type switch comprising a nail-shooting pressing member 821, a nail-shooting switch element 822, and a nail-shooting reset member 823. The nail-shooting pressing member 821 is rotatably mounted on the handle 211, with one end protruding from an opening in the handle 211. The nail-shooting switch element 822 is a microswitch mounted within the handle 211 and adjacent to the nail-shooting pressing member 821. When the nail-shooting pressing member 821 is pressed, its other end contacts the reed of the nail-shooting switch element 822, generating a corresponding nail-shooting electrical signal. The nail-shooting reset member 823 is a spring, which is installed in the groove formed by the protrusion on the inner surface of the handle part 211. One end abuts against the groove wall, and the other end abuts against one end of the nail-shooting pressing member 821. When the user releases the nail-shooting pressing member 821, the nail-shooting pressing member 821 is reset under the action of the spring.

[0064] The safety switch 83 is also a trigger-type switch, comprising a safety pressing member 831, a safety switch element 832, and a safety reset member 833. Its structure is similar to that of the nail-shooting switch 82 and will not be further described. The safety switch element 832 (a microswitch) is tiltedly mounted within the handle 211, allowing the safety pressing member 831 to be positioned closer to the nail-shooting pressing member 821, making it easier for the user to press both pressing members with one hand.

[0065] The energy storage stop switch 84 includes a stop pusher 841 and a stop switch element 842. The stop switch element 842 is also a microswitch. The stop pusher 841 has a curled end and a generally straight end. The curled end is rotatably mounted on the inner surface of the left housing 21. When the piston 34 moves to the position of the stop pusher 841, the piston 34 pushes the stop pusher 841, triggering the reed of the stop switch element 842.

[0066] Figure 10 It is a three-dimensional view of the left housing in this embodiment.

[0067] Figure 11 1 is a perspective view of the right housing in this embodiment. Figure 10 and Figure 11 The structures of the inner surfaces of the left housing 21 and the right housing 22 are shown respectively.

[0068] like Figure 10 、 Figure 11 As shown, grid-shaped protrusions, columnar protrusions and strip-shaped protrusions are formed on the inner surface of the left housing 21, forming multiple element fixing parts 213 for fixing multiple switching elements (micro switches) and reset element accommodating grooves 214 for accommodating multiple reset elements (springs).

[0069] The microswitch has two circular, through-going mounting holes in its center. Each component fixing portion 213 comprises two cylindrical protrusions surrounded by several strip-shaped protrusions. The two cylindrical protrusions pass through the microswitch's two mounting holes, while the surrounding strip-shaped protrusions restrain the sides of the microswitch, thereby securing it to the inner surface of the left housing 21. The reset member receiving groove 214 is a roughly square groove formed within the grid-like protrusions. The reset member is accommodated within this groove, with one end abutting the groove wall and the other end abutting one end of the corresponding pressing member.

[0070] A plurality of component limiting portions 223 are formed on the inner surface of the right housing 22, which respectively correspond to the positions of a group of component fixing portions 213 and reset member accommodating grooves 214. The component limiting portions 223 are grid-shaped protrusions. When the left housing 21 and the right housing 22 are put together, the component limiting portions 223 on the inner surface of the right housing 22 can press and limit the springs and micro switches installed on the inner surface of the left housing 21. With such a design, all springs and micro switches are installed on the inner surface of the left housing 21, and the right housing 22 is only used for limiting. It is more convenient to combine the two halves of the housing, and the micro switches no longer need to be fixed with screws, reducing the number of small parts. In addition, these protrusions on the inner surface of the housing are also used as reinforcing ribs.

[0071] The control module 86 includes a circuit board and multiple wires. The switching elements of the aforementioned switches, the motor 381, the indicator lights, and the lithium battery 70 are connected to the circuit board via wires. The control module 86 includes a power management unit 862, a signal receiving unit 863, a signal determination unit 864, an operating mode determination unit 865, a motor control unit 866, an indicator light control unit 867, and a control unit 861 that controls each of these units. The corresponding circuit structure can be found in the description of CN216608882U.

[0072] The power management unit 862 manages the charging of the lithium battery 70 and protects the lithium battery 70 .

[0073] The signal receiving unit 863 is used to receive the electrical signals generated by the above-mentioned switches, including: receiving the start electrical signal when the power switch 81 is pressed; receiving the nail shooting electrical signal when the nail shooting switch 82 is pressed; receiving the safety electrical signal when the safety switch 83 is pressed; receiving the stop electrical signal when the energy storage stop switch 84 is pushed down; and receiving the mode switching electrical signal when the mode switching switch 85 is long pressed.

[0074] Signal determination unit 864 determines the validity of each of the electrical signals received by signal receiving unit 863 based on predetermined signal determination rules. A programmable control chip (MCU) is integrated on the circuit board. The signal determination rules are pre-programmed and stored in the control chip. The control chip also stores preset parameters, including a predetermined unit time value. The unit time is set such that one unit time of motor 381 operation is sufficient to fire one nail and complete two stages of energy storage.

[0075] One unit of time specifically includes:

[0076] The time T1 from the start state or the stop state to the energy storage completion state, that is, the time it takes for the piston 34 to be pushed from the stop position to the high position after the power button is pressed or the last nail is fired;

[0077] The time T2 from the energy storage completion state to the nail shooting state is the time it takes for the piston 34 in the high position to be further pushed by the driving wheel 37 until it falls off;

[0078] The time T3 from the start of nail shooting to the completion of nail shooting is the time it takes for the piston 34 to fall off the driving wheel 37 and be pushed from the high position to the low position by the spring;

[0079] The time T4 from the nail-shooting completion state to the stop state is the time for the piston 34 to continue to be pushed by the spring from the low position to the stop position.

[0080] One unit of time is T1+T2+T3+T4.

[0081] In this embodiment, the signal determination rule is specifically as follows:

[0082] The repeated / long-lasting nail-shooting electrical signals are determined as only the first nail-shooting electrical signal being received within the corresponding unit time;

[0083] A repeated safety electrical signal is determined as only the first safety electrical signal being received within the corresponding unit time, and a long-lasting safety electrical signal is determined as only the first safety electrical signal being received;

[0084] A repeated stop signal is determined as only the first stop signal being received within the corresponding unit time, and a long-lasting stop signal is determined as only the first stop signal being received;

[0085] After receiving the start signal, the stop signal received within 1 unit time is shielded;

[0086] After receiving the start signal, it is determined that the stop signal has been received after 1.1-1.5 unit time, regardless of whether the stop signal is received;

[0087] Determine that a mode switch electrical signal that is on for more than one second is received as a mode switch electrical signal;

[0088] After receiving the mode switching electrical signal, the received stop electrical signal is shielded.

[0089] Operating mode determination unit 865 determines the current operating mode based on the received and valid electrical signals. Operating modes include normal operating mode, maintenance mode, and stop mode. Upon receiving a start signal, the system is in normal operating mode. Upon receiving a mode switch signal, the system is in maintenance mode. If no signal is received within a predetermined period of time, the system is in stop mode.

[0090] The motor control unit 866 controls the motor 381 to start or stop according to the current working mode and the received and valid electrical signal, specifically including:

[0091] In normal working mode or stop mode, the motor 381 is controlled to start when a start electrical signal is received;

[0092] In normal working mode, the motor 381 is controlled to stop when a stop signal is received;

[0093] In normal working mode, the control motor 381 starts when both the nail shooting signal and the safety signal are received;

[0094] In the maintenance mode, when the nail shooting signal and the safety signal are received at the same time, the motor 381 is controlled to start and the motor 381 is controlled to stop after a predetermined time T5. <T5≤T2+T3。也即预定时间T5能够保证活塞34脱离驱动轮37(即活塞被释放)后停在低位或停止位。本实施例中,预定时间T5为0.1~0.2个单位时间。

[0095] That is, after the nail gun 10 is started or after the last nailing, the nail gun 10 will automatically store energy and keep the piston 34 in the energy storage completion position.

[0096] In normal working mode, the user can fire a nail by simultaneously pressing the nail-shooting push piece 821 and the safety push piece 831 on the handle. After firing, the motor 381 continues to work and automatically stores energy until the energy storage stop switch 83 is triggered, thereby maintaining the piston 34 in the energy storage completion position (high position). In addition, continuous nail shooting can also be performed. The user presses and holds the nail-shooting push piece 821 for a long time, and the safety push piece 831 needs to be released and pressed again each time a nail is shot. The specific process of single nail shooting and continuous nail shooting can be found in the description of CN216608882U.

[0097] After switching to maintenance mode, the user simultaneously presses the nail shooting push piece 821 and the safety push piece 831 on the handle to release the piston 34, so that the spring assembly 33 is in a non-energy storage state. Since the motor only works for 0.1-0.2 unit time, the piston 34 will no longer automatically store energy after being released to the low position, and the piston 34 will remain in the low position.

[0098] The indicator light control unit 867 controls the left indicator light 812 and the right indicator light 813 to light up or down according to the current working mode. In the normal working mode, the left indicator light 812 and the right indicator light 813 are controlled to light up continuously; in the maintenance mode, the left indicator light 812 and the right indicator light 813 are controlled to flash alternately.

[0099] Figure 12 1 is an operational flow chart for releasing the piston in maintenance mode in an embodiment of the present invention.

[0100] like Figure 12 As shown, based on the above-mentioned nail shooting control device 80 and nail shooting gun 10, in this embodiment, the process of entering the maintenance mode and releasing the piston 34 specifically includes the following steps:

[0101] Step S1, remove the two screws on the striker baffle 23, remove the striker baffle 23, and expose the replacement opening above the housing 20;

[0102] Step S2, remove the connecting pin of the striker 40 and take out the striker 40 from the replacement opening;

[0103] Step S3: The user presses the power button 811, and the power switch element generates a start-up electrical signal;

[0104] Step S4: The signal receiving unit 863 receives the start-up electrical signal, the signal determining unit 864 determines that the start-up electrical signal is valid, and the working mode determining unit 865 determines that the current working mode is the normal working mode;

[0105] Step S5: The motor control unit 866 controls the motor 381 to start working, driving the piston 34 to move in the energy storage direction, i.e., energy storage starts automatically.

[0106] Step S6: The piston 34 moves to the stop push member 841 and pushes it, and the stop switch element 842 generates a stop electrical signal;

[0107] Step S7: The signal receiving unit 863 receives the stop electrical signal, and the signal determining unit 864 determines that the stop electrical signal is valid;

[0108] Step S8: The motor control unit 866 controls the motor 381 to stop working, and the piston 34 stops moving and stays at the energy storage completion position (high position);

[0109] Step S9: The user presses the mode switch button 851 for more than one second, and the mode switch element generates a long-on mode switch electrical signal;

[0110] Step S10: The signal receiving unit 863 receives a mode switch electrical signal that lasts for more than one second, the signal determining unit 864 determines that a valid mode switch electrical signal has been received, and the working mode determining unit 865 determines that the current mode is maintenance mode.

[0111] Step S11: The indicator light control unit 867 controls the left indicator light 812 and the right indicator light 813 to flash alternately. The user can know that the maintenance mode has been entered by observing the indicator lights flashing alternately.

[0112] Step S12: The user presses the nail-shooting pressing member 821 and the safety pressing member 831 simultaneously, and the nail-shooting switch element and the safety switch element generate a nail-shooting electrical signal and a safety electrical signal respectively.

[0113] Step S13: The signal receiving unit 863 receives the nail-shooting electrical signal and the safety electrical signal simultaneously, and the signal determining unit 864 determines that the nail-shooting electrical signal and the safety electrical signal are valid;

[0114] In step S14 , the motor control unit 866 controls the motor 381 to work for 0.1-0.2 unit time, the piston 34 is released from the high position, and the spring assembly 33 returns to the non-energy storage state.

[0115] By following the above steps, the maintenance mode is entered, the piston 34 is released from the high position and kept in the low position, and the user can safely perform maintenance operations such as disassembly, cleaning, and component replacement on the nail gun 10.

[0116] Furthermore, in the above steps, steps S1 and S2 can be omitted and the subsequent steps can be performed directly. Steps S1 and S2 are performed to better observe the position of piston 34 and ensure that it is released to the lower position in maintenance mode. In this way, if the piston 34 is still in a high position after the operation, steps S3-S5 can be repeated to try to release the piston 34 to the lower position again.

[0117] Example Function and Effect

[0118] According to the nail shooting control device 80 and the nail gun 10 provided in this embodiment, they include a nail shooting switch 82, a safety switch 83, an energy storage stop switch 84, a mode switching switch 85 and a control module 86, wherein the control module 86 includes a signal receiving unit 862, a working mode determination unit 863 and a motor control unit 866, and can control the motor 381 according to the electrical signals generated by multiple switches. In the normal working mode, when the nail shooting switch 82 and the safety switch 83 are triggered at the same time, the control module 86 receives the nail shooting electrical signal and the safety electrical signal and controls the motor 381 to start until the energy storage stop switch 84 is pushed and triggered by the piston 34. The control module 86 receives the stop electrical signal and controls the motor 381 to stop, thereby driving the piston 34 to shoot a nail once, and continuing to drive the piston 34 to move and compress the spring assembly 33 to store energy after shooting the nail, so that the user does not need to wait for the energy storage process when shooting the nail next time, thereby improving work efficiency. Furthermore, when the mode switching switch 85 is triggered, the control module 86 switches to the maintenance mode. When the maintenance mode receives the nail shooting electrical signal and the safety electrical signal, the control motor 381 starts and stops after a predetermined time, thereby releasing the piston 34 located in the energy storage completion position (high position), thereby improving the safety of the user when maintaining the nail gun.

[0119] In the embodiment, in maintenance mode, the firing switch 82 and the safety switch 83 are simultaneously triggered, and the control module 86 controls the motor 381 to start and stop after 0.1-0.2 time units, thereby releasing the piston 34 in the high position. After release, the motor 381 stops and no longer drives the piston 34 in the energy storage direction, causing it to remain in the low position, thereby ensuring safety during maintenance. Furthermore, in maintenance mode, the firing switch 82 and the safety switch 83 still need to be triggered simultaneously to release the piston 34, which also ensures the safety of the user during the release process.

[0120] In this embodiment, the mode switch 85 is located at the upper end of the base portion 212, facing the inner side of the housing 20. The mode switch 85 requires a long press of at least one second to trigger the mode switch. This reduces the likelihood of accidental triggering during normal nailing. Two LED indicators are also located on either side of the mode switch 85. When the mode switch is triggered by a long press, the two indicators flash alternately, allowing the user to intuitively confirm that the switch has successfully switched to maintenance mode.

[0121] In the embodiment, the switching elements of the nail shooting switch 82, the safety switch 83, and the energy storage stop switch 84 are all micro switches, and all have springs for resetting the pressing parts. The micro switches and the reset springs are fixed to the mounting structure on the inner surface of the left casing 21, and the right casing 22 is only used to press and limit them. Unlike traditional nail guns, the left and right casings are symmetrical structures, and the micro switches are fixed by screws. Through such a structural design, the two-halves of the casing are easier to combine, the number of parts is smaller, and the efficiency of assembly and maintenance can be improved.

[0122] The above embodiments are only used to illustrate specific implementations of the present invention, and the present invention is not limited to the description scope of the above embodiments.

[0123] In the above embodiment, a plurality of micro switches, return springs and other small components are installed on the inner surface of the left housing 21, and the inner surface of the right housing 22 only has a corresponding limiting structure, so as to facilitate the combination of the two halves of the housing. In an alternative solution, the designs of the left and right housings can also be exchanged.

[0124] In the above embodiment, the signal determination rule enables the user to long-press the nail shooting switch 82, release it multiple times, and then press the safety switch 83 to achieve continuous nail shooting. In an alternative solution, a different signal determination rule can also be used, so that the user can long-press the safety switch 83, release it multiple times, and then press the nail shooting switch 82 to achieve continuous nail shooting. For details, please refer to the modified example of CN216608882U.

Claims

1. A nail shooting control device, provided in a nail shooting gun having a motor, a piston, and a force supply spring, for controlling the start and stop of the motor, the motor for driving the piston to move to shoot the nail and compressing the force supply spring to store energy after the nail shooting, characterized in that: Comprising: A nail firing switch, including a pressing member for nail firing and a switch element for nail firing, and the switch element for nail firing generates a nail firing electrical signal when the pressing member for nail firing is pressed; An energy storage stop switch, including a pushing member for stop disposed on the moving path of the piston and a switch element for stop, and the switch element for stop generates a stop electrical signal when the pushing member for stop is pushed by the piston; A mode switching switch, including a mode switching button and a mode switching switch element, and the mode switching switch element generates a mode switching electrical signal when the mode switching button is pressed; And A control module for controlling a drive motor, which includes: A signal receiving unit for receiving the nail firing electrical signal, the stop electrical signal, and the mode switching electrical signal; A working mode determination unit, which determines it as a maintenance mode when receiving the continuously-conducted mode switching electrical signal, and determines it as a normal working mode when not receiving the mode switching electrical signal; and A motor control unit, which controls the motor to start when receiving the nail firing electrical signal in the normal working mode, controls the motor to stop when receiving the stop electrical signal, and controls the motor to start and stop after a predetermined time when receiving the nail firing electrical signal in the maintenance mode, wherein the control module further stores a value of a predetermined unit time, and one unit time is the time for the motor to drive the piston to perform one nail firing and one energy storage; which includes a time T1 from the start state or the stop state to the energy storage completion state, a time T2 from the energy storage completion state to the start of nail firing state, a time T3 from the start of nail firing state to the nail firing completion state, and a time T4 from the nail firing completion state to the stop state, and one unit time is T1 + T2 + T3 + T4; the predetermined time is T5, T2 < T5 ≤ T2 + T3, and T5 is 0.1 to 0.2 of the unit time.

2. The nail shooting control device according to claim 1, characterized in that: It further includes: Two indicator lights for indicating the working mode of the nail gun, wherein the control module further includes an indicator light control unit, and in the maintenance mode, the indicator light control unit controls the two indicator lights to flash alternately.

3. The nail shooting control device according to claim 1, It is characterized in that: wherein the control module further includes a signal determination unit for determining the validity of the electrical signal received by the signal receiving unit according to a predetermined signal determination rule, the signal determination rule includes: Determining the continuously-conducted mode switching electrical signal for more than one second as receiving the mode switching electrical signal; and shielding the received stop electrical signal after receiving the mode switching electrical signal.

4. The nail shooting control device according to claim 3, It is characterized in that: wherein the signal determination rule further includes: Determining the repeated / continuously-conducted nail firing electrical signal as only receiving the first nail firing electrical signal within the corresponding unit time; and Determining the repeated stop electrical signal as only receiving the first stop electrical signal within the corresponding unit time, and determining the continuously-conducted stop electrical signal as only receiving the first stop electrical signal.

5. The nail shooting control device according to claim 4, characterized in that: It further includes: A power switch, including a power button and a power switch element, and the power switch element generates a start electrical signal when the power button is pressed. The signal determination rules further include: After receiving the start electrical signal, shielding the stop electrical signal received within one unit time; and After receiving the start electrical signal, it is determined that the stop electrical signal has been received after 1.1-1.5 of the unit time, regardless of whether the stop electrical signal is received. The motor control unit further controls the motor to start in response to the start electrical signal.

6. The nail shooting control device according to claim 4, characterized in that: Also includes: A safety switch includes a safety pressing piece and a safety switch element. The safety switch element generates a safety electrical signal when the safety pressing piece is pressed. The signal determination rules further include: The repeated safety electrical signal is determined as only the first safety electrical signal received within the corresponding unit time, and the long-lasting safety electrical signal is determined as only the first safety electrical signal received, The motor control unit controls the motor to start when receiving the nail shooting electrical signal and the safety electrical signal at the same time in the normal working mode. The motor control unit controls the motor to start when receiving the nail shooting electrical signal and the safety electrical signal simultaneously in the maintenance mode, and controls the motor to stop after the predetermined time.

7. The nail shooting control device according to claim 6, Its characteristics are: Wherein, the switch element for nail shooting and the switch element for safety are both micro switches, and the middle part of the micro switch has two mounting holes. The nail gun includes a housing, which includes a left housing and a right housing that match each other. The inner surface of one of the left housing and the right housing is formed with two element fixing parts for fixing the two micro switches, and the inner surface of the other housing is formed with two element limiting parts for pressing and limiting the two micro switches fixed to the element fixing parts. The component fixing portion includes: Two cylindrical protrusions matching the two mounting holes of the micro switch; and Several strip-shaped protrusions are distributed around the two columnar protrusions and are used to limit the sides of the micro switch fixed on the columnar protrusions. The element limiting portion is a grid-shaped protrusion.

8. The nail shooting control device according to claim 6, characterized in that: in, The nail gun includes a housing having a handle for a user to hold. The nail-shooting pressing piece is arranged on the handle portion. The safety pressing piece is provided on the handle portion and is located near the nail-shooting pressing piece.

9. A nail gun, characterized in that: include: A piston for firing nails; a force supply spring, for supplying force to the movement of the piston; A motor, used to drive the piston to move, thereby shooting nails or compressing the force supply spring to store energy; as well as The nail shooting control device is used to control the start and stop of the motor. Wherein, the nail shooting control device is the nail shooting control device according to any one of claims 1-8.

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