Nail gun

Abstract

The invention discloses a nail gun. The nail gun comprises a shell; the motor is arranged in the shell; the percussion assembly is arranged in a nailing period, can move from an initial position to a percussion position so as to knock out a nail to a workpiece, and can move from the percussion position to the initial position; the at least one light-emitting device is arranged on the shell; the first control circuit is configured to independently control the light-emitting device to work at least when the motor is not started; the light-emitting control switch is connected with the first control circuit; and the controller controls operation of the motor, and the controller is configured to receive a signal indicating that the motor is powered on and the light-emitting control switch is triggered and control starting of the motor.

Description

Technical Field

[0001] The present application relates to the technical field of electric tools, and in particular to a nail gun. Background Art

[0002] A nail gun is a nailing tool and can be either mechanical or cylinder-type. Cylinder-type nail guns use pressure differences to drive nails by compressing the volume of gas within the cylinder, while mechanical nail guns drive nails by compressing elastic elements such as springs. Typically, nail guns are equipped with LED lights for illumination or marking the nailing position, or display screens that intelligently display information such as the battery level and nailing mode.

[0003] This section provides background information related to the present application which is not necessarily prior art. Summary of the Invention

[0004] In order to address the deficiencies of the prior art, the present application aims to provide a nail gun that is safer to start.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions: A nail gun comprises: a housing; a motor disposed within the housing; a firing assembly configured to move from an initial position to a firing position within a nailing cycle to drive a nail into a workpiece, and to move from the firing position to the initial position; at least one light-emitting device disposed in the housing; a drive circuit configured to at least control the power supply to the motor; a first control circuit configured to independently control the light-emitting device at least when the motor is not started; a light-emitting control switch connected to the first control circuit; a controller configured to at least control the operation of the motor; and the controller configured to, upon receiving a signal indicating that the motor is powered on and the light-emitting control switch is triggered, control the motor to start.

[0006] In one embodiment, a host switch is further included, and the host switch at least controls power on of the controller.

[0007] In one embodiment, a push rod switch is further included. The push rod switch is arranged at the lower end of the firing assembly. When the push rod switch abuts against the workpiece, the push rod switch is triggered.

[0008] In one embodiment, when the host switch is triggered and the push rod switch is triggered, the driving circuit is connected and the motor is energized.

[0009] In one embodiment, a detection circuit is further included, which is used to detect whether the light-emitting control switch is triggered and generate a corresponding signal of the light-emitting control switch being triggered to the controller.

[0010] In one embodiment, when the lighting device is on, the motor is not necessarily powered.

[0011] In one embodiment, the first control circuit and the driving circuit are disposed on the same circuit board.

[0012] In one embodiment, the first control circuit and the driving circuit are disposed on different circuit boards.

[0013] In one embodiment, the nail gun also includes a parameter detection unit, which is configured to detect the operating parameters of the motor and / or the battery parameters of the battery pack that powers the nail gun; the controller is configured to at least control the light-emitting device to change the light-emitting form to issue an alarm when it determines that the nail gun has failed based on the operating parameters and / or battery parameters.

[0014] In one embodiment, the light emitting device is configured to provide an alarm prompt through at least one of the number of light emitting devices, light color, light frequency, number of flashes, brightness level, and content of the light display.

[0015] A nail gun comprises: a housing; a motor disposed in the housing; a firing assembly configured to move from an initial position to a firing position within a nailing cycle to drive a nail into a workpiece, and to move from the firing position to the initial position; at least one light-emitting device disposed in the housing; a light-emitting control switch configured to at least control the state of the light-emitting device; a controller configured to at least control the operation of the motor; a host switch configured to at least control the power supply to the controller; a push rod switch disposed at the lower end of the firing assembly, the push rod switch being triggered when the push rod switch abuts against the workpiece; and the controller being configured to control the motor to start upon receiving a signal that the light-emitting control switch, the host switch, and the push rod switch are all triggered.

[0016] A nail gun comprises: a housing; a motor disposed within the housing; a firing assembly configured to move from an initial position to a firing position within a nailing cycle to drive a nail into a workpiece, and to move from the firing position to the initial position; at least one light-emitting device disposed in the housing; a drive circuit configured to at least control the power supply to the motor; a first control circuit configured to independently control the light-emitting device at least when the motor is not started; a controller configured to at least control the operation of the motor; a detection circuit connected to the first control circuit and the controller; and the controller configured to control the start-up of the motor according to the states of the drive circuit and the detection circuit.

[0017] A nail gun comprises: a housing; a motor disposed in the housing; a firing assembly configured to move from an initial position to a firing position within a nailing cycle to drive a nail into a workpiece, and to move from the firing position to the initial position; at least one light-emitting device disposed in the housing; a controller controlling the operation of the motor; a drive circuit controlling at least the power supply to the motor; a first control circuit configured to independently control the operation of the light-emitting device at least when the motor is not started; a detection circuit connected to the first control circuit and the controller, wherein the detection circuit outputs a corresponding response signal to the controller after receiving a signal that the first control circuit is turned on; and a controller connected to the drive circuit and the detection circuit, wherein the controller outputs a start signal to the motor after receiving a power-on signal from the drive circuit and a response signal from the detection circuit.

[0018] A nail gun comprises: a housing; a motor disposed within the housing; a firing assembly configured to move from an initial position to a firing position within a nailing cycle to drive a nail into a workpiece, and to move from the firing position to the initial position; at least one light-emitting device disposed in the housing; a drive circuit configured to at least control the power supply to the motor; a first control circuit configured to independently control the operation of the light-emitting device at least when the motor is not started; a light-emitting control switch connected to the first control circuit; and a controller configured to control the operation of the motor, the controller being configured to receive a signal indicating that the motor is powered on and the light-emitting control switch is triggered, and to control the start of the motor.

[0019] The benefit of the present application is that by setting up a circuit that can independently control the light-emitting device, the light-emitting device can be turned on in advance before the motor is started. During the process of starting the motor, the switch of the light-emitting device is controlled in conjunction. The switch of the light-emitting device is a necessary condition for starting the motor, so that the start-up of the nail gun is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 It is a stereoscopic image of a nail gun from one perspective; Figure 2 yes Figure 1 A cross-sectional view of a nail gun in FIG. Figure 3 yes Figure 1 Schematic diagram of the internal structure of the nail gun in the initial position; Figure 4 yes Figure 1 Schematic diagram of the internal structure of the nail gun in the firing position; Figure 5 yes Figure 1 A three-dimensional schematic diagram of a driving wheel of a nail gun; Figure 6 It is a stereoscopic image of the nail gun from another perspective; Figure 7 is a circuit schematic diagram of a nail gun according to one embodiment; Figure 8 is a circuit schematic diagram of a nail gun according to one embodiment; Figure 9 is a circuit schematic diagram of a nail gun according to one embodiment; Figure 10 is another circuit schematic diagram of a nail gun according to one embodiment; Figure 11 is another circuit schematic diagram of a nail gun according to one embodiment; Figure 12 is a structural cross-sectional view of a nail gun according to an embodiment; Figure 13 The present invention is a control circuit diagram of a light emitting device in an embodiment. DETAILED DESCRIPTION

[0022] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the foregoing drawings.

[0023] In this application, the terms "comprises," "includes," "has," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0024] In this application, the term "and / or" describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this application generally indicates that the related objects are in an "and / or" relationship.

[0025] In this application, the terms "connect," "combine," "couple," and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without an intermediary, and an indirect connection refers to two parts or components being connected to at least one intermediary, with the two parts or components being connected via the intermediary. Furthermore, "connect" and "couple" are not limited to physical or mechanical connections or couplings and may include electrical connections or couplings.

[0026] In this application, it will be understood by those skilled in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of the specific value, the tolerance caused by manufacturing, assembly, and use associated with the specific value, etc. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular) may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) based on the indicated angle.

[0027] In this application, it will be understood by those skilled in the art that the function performed by an assembly can be performed by one assembly, multiple assemblies, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one assembly, or a combination of multiple parts.

[0028] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to the other element "upper" or "lower", but also be indirectly connected to the other element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, below can include directly below, lower left, lower right, lower front and lower back, etc.

[0029] In this application, the terms "controller," "processor," "central processing unit," "CPU," and "MCU" are used interchangeably. Where a unit "controller," "processor," "central processing unit," "CPU," or "MCU" is used to perform a particular function, unless otherwise specified, the function may be performed by a single unit or multiple units.

[0030] In this application, the terms "device", "module" or "unit" can be implemented in the form of hardware or software to achieve specific functions.

[0031] In this application, the terms "calculate", "judge", "control", "determine", "identify", etc. refer to the operations and processes of a computer system or similar electronic computing device (e.g., controller, processor, etc.).

[0032] The definitions of up and down, left and right, or front and back in this application can be referred to Figures 1 to 4 The direction shown.

[0033] Figures 1 to 2 As shown, the nail gun 100 includes: a housing 11, a power output unit 12, a cylinder 13, and a magazine assembly 14. The housing 11 includes a first storage space 111 extending along the first straight line 101 and a second storage space 112 extending along the second straight line 102. In one embodiment, the power output unit 12 can be partially disposed within the first storage space 111 or partially disposed within the second storage space 112. In one embodiment, the power output unit 12 can include a motor 121 or an energy storage device. The so-called energy storage device can be understood as releasing stored kinetic energy in the first half of a nailing cycle to achieve nailing, and storing energy in the second half of a nailing cycle to prepare for subsequent nailing. The energy storage device can be a cylinder that can pre-store gas, a cylinder that can be inflated and deflated during operation, or an elastic member such as a spring. In this embodiment, the cylinder 13 is used as the energy storage device, and the cylinder 13 is disposed within the second storage space 112.

[0034] The housing 11 also includes a handle 113 for the user to grasp. A power port 1131 is provided at one end of the handle 113 for connecting to a DC or AC power source. In this embodiment, the power port 1131 is configured to connect to a battery pack 15. A main switch 251 is provided on the handle 113, which the user uses to control the start and stop of the nail gun 100.

[0035] The other end of the handle 113 is connected to the cylinder 13, which extends along the second straight line 102. The first straight line 101 and the second straight line 102 are perpendicular to each other. The clip assembly 14 is arranged along a third straight line 103, which is parallel to the first straight line 101. As an optional embodiment, the clip assembly 14 is also provided with a window 141 through which the user can observe the remaining nails. Window 141 is configured as one or more notches on the clip assembly 14. This allows the user to check the remaining nails and also allows for simple maintenance of the clip assembly 14 without disassembling it.

[0036] A firing assembly 16 is provided in the cylinder 13, and the gas in the cylinder 13 does work, pushing the firing assembly 16 to move and drive out the nail. The nail gun 100 also includes a striking part 17. The striking part 17 is at least partially provided in the cylinder 13, for example, it can be a piston provided in the cylinder 13 and connected to the firing assembly 16. The striking part 17 can be connected to the firing assembly 16 and can strike the firing assembly 16, thereby causing it to move in the cylinder 13. In one embodiment, the cylinder 13 also includes an inflation nozzle for pre-filling gas in the cylinder 13. The pre-filled gas reserves a large amount of kinetic energy in a compressed state, which can push the striking part 17 to quickly strike the firing assembly 16 to drive out the nail. Alternatively, the cylinder 13 is a cylinder including an air inlet nozzle and an air outlet nozzle, which does not require pre-filling of gas and can be inflated during the operation of the nail gun 100.

[0037] Here, the cylinder 13 that can be pre-filled with gas is used as an example for explanation. After the nail gun 100 is shut down, the motor 121 stops outputting power and can stop the firing assembly 16 at the initial position. The pre-filled gas in the cylinder 13 is in a compressed state. After the nail gun 100 is powered on and the motor is started, the motor 121 outputs power, the firing assembly 16 is released, and the striking part 17 can convert the kinetic energy in the cylinder 13 into a striking force to strike the firing assembly 16, so that the firing assembly 16 instantly obtains a large acceleration and moves to Figure 4 After the nail is driven, the firing assembly 16 is driven from the motor 121. Figure 4 The firing position shown returns to Figure 3 The firing assembly 16 can continuously drive the striking part 17 to compress the gas in the cylinder 13 during this process. The process from the nail gun starting to nailing, and the firing assembly 16 returning to the initial position or the position near the initial position, i.e., the stop position, is called a nailing cycle. It should be noted that Figure 3The initial position shown is the position where the firing assembly 16 stops after the nail gun 100 is shut down, and therefore can also be referred to as the stop position. The position to which the firing assembly 16 can move upward is referred to as the top dead center, and the position to which the firing assembly 16 can move downward is referred to as the bottom dead center. The firing position and the bottom dead center can be the same position, while the initial position is closer to the top dead center from the bottom up, but is not the top dead center, that is, the distance between the initial position and the top dead center is greater than zero.

[0038] like Figure 2 As described above, the motor 121 extends generally along the first straight line 101, while the cylinder 13 and the firing assembly 16 disposed therein extend generally along the second straight line 102. The motor 121 and the cylinder 13 are disposed generally perpendicularly. The motor 121 can serve as a power source to drive the motor 121, thereby driving the firing assembly 16 to move within the cylinder 13. In an alternative implementation, the motor 121 can be a part of the motor 121, capable of outputting power to a drive shaft (not shown), on which the drive wheel 125 is disposed. The firing assembly 16 includes at least a striker 161. In one embodiment, the firing assembly 16 may also include a striking portion 17, which may be a piston connected to the top of the striker 161. The piston may be fixedly or detachably connected to the striker 161. The striking portion 17 can compress the pre-charged gas within the cylinder 13 as the striker 161 is driven upward, i.e., toward its initial position. The firing pin 161 is formed with a transmission tooth 161a, and the firing pin 161 can move along the second straight line 102 in the cylinder 13. The second straight line 102 can be understood as the nailing direction. The driving wheel 125 can cooperate with the transmission tooth 161a to drive the firing assembly 16 to overcome the air pressure in the cylinder 13 to do work, so that the firing assembly 16 can enter the Figure 3 Initial position shown.

[0039] like Figure 4 and Figure 5 As shown, the driving wheel 125 is a gear structure. The driving wheel 125 is also formed with a second connecting hole 125a for connecting to a driving shaft (not shown). The second connecting hole 125a is specifically a flat hole. When the driving shaft (not shown) is connected to the second connecting hole 125a, the driving wheel 125 can rotate synchronously with the driving shaft (not shown). A plurality of driving teeth 125g are formed around the main body of the driving wheel 125. The driving teeth 125g include a first tooth 125b arranged at the starting end and a second tooth 125d arranged at the end. Here, it is defined that the driving wheel 125 starts to drive the firing assembly 16 to reset to Figure 3The driving tooth 125g that first contacts the firing pin 161 of the firing assembly 16 in the initial position is defined as the first tooth 125b. The driving tooth 125g that last engages the firing pin 161 in the firing assembly 16 after the firing assembly 16 has reached the initial position is defined as the second tooth 125d. Between the first tooth 125b and the second tooth 125d is a first section 125e and a second section 125f. The first section 125e is evenly distributed with multiple driving teeth 125g; the second section 125f is smooth and continuous, with no driving teeth 125g distributed thereon. When the driving tooth 125g of the first section 125e engages with the transmission tooth 161a on the firing pin 161, the driving wheel 125 can drive the firing pin 161 to compress the gas in the cylinder 13 to do work; when the second section 125f cooperates with the firing pin 161, since the second section 125f is smooth and continuous, the firing pin 161 will be quickly pushed out by the gas in the cylinder 13 in the absence of the driving tooth 125g to stop it, thereby achieving the nailing effect.

[0040] In other embodiments, the driving wheel 125 may also be a driving component in other forms. This application does not specifically limit the structural forms of other possible driving wheels 125.

[0041] In this embodiment, the nail gun 100 is provided with a light emitting device 18. The light emitting device 18 can be one or more LED lamp beads arranged at different positions, or a row of light strips, or a digital tube, or a display screen, etc. Figure 6 As shown, the lighting device 18 is composed of three LED lights mounted on the housing 11. One lighting device 181 is positioned directly above the horizontal plane where the striker 161 is located. The other two lighting devices 182 cooperate with the lighting device 181 to project a V-shaped, arrow-shaped, or triangular light spot on the workpiece being nailed, indicating the nailing location on the workpiece. In one implementation, the other two lighting devices 182 are mounted on the housing 11 on the left and right sides of the front end of the nail gun 100.

[0042] refer to Figure 7 The control circuit of the illustrated nail gun may include at least a parameter detection unit 21, a drive circuit 22, a controller 23, a light-emitting device 18, and a motor 121. The battery pack 15, serving as the power supply for the control circuit, not only provides driving power for the motor 121 but also provides low-voltage power to the controller 23 after conversion by the power conversion unit, or provides power to the parameter detection unit 21, or provides power to the light-emitting device 18. This embodiment only illustrates the power supply path through which the battery pack 15 provides power to the motor 121; other possible power supply paths are not described in detail.

[0043] In one embodiment, the drive circuit 22 at least controls the power supply of the motor 121, and the controller 23 at least controls the operation of the motor 121. The drive circuit 22 is connected between the controller 23 and the motor 121, and can receive the control signal output by the controller 23, and control the operation state of the motor 121 by changing its own conduction state, such as stopping or rotating or rotating speed or rotating direction. Optionally, the drive circuit 22 can be composed of one or more power components. In one embodiment, as Figure 7 As shown, the drive circuit 22 includes multiple power elements VT1, VT2, VT3, VT4, VT5, and VT6. Each gate terminal of each power element is electrically connected to the controller 23 for receiving control signals from the controller 23. Each drain or source terminal of each power element is connected to the stator winding of the motor 121. Power elements VT1-VT6 receive control signals from the controller 23 to change their respective conduction states, thereby changing the current applied by the battery pack to the stator winding of the motor 121. In one embodiment, the drive circuit 22 may be a three-phase bridge driver circuit including six controllable semiconductor power devices (e.g., field effect transistors (FETs), bipolar junction transistors (BJTs), insulated gate bipolar transistors (IGBTs), etc.). It will be appreciated that the aforementioned power elements may also be any other type of solid-state switch, such as insulated gate bipolar transistors (IGBTs) or bipolar junction transistors (BJTs).

[0044] To rotate the motor 121, the drive circuit 22 has multiple drive states. In one drive state, the stator winding of the motor generates a magnetic field. The controller 23 outputs a corresponding pulse width modulation (PWM) control signal to the switching element in the drive circuit based on the rotor position or back electromotive force of the motor, so that the drive circuit switches the drive state, thereby causing the stator winding to generate a changing magnetic field to drive the rotor to rotate, thereby achieving rotation or phase change of the motor. It should be noted that any other circuit and control method capable of driving the rotation or phase change of the motor can be used in the present disclosure. The present disclosure does not limit the circuit structure of the drive circuit 22 and the control of the drive circuit 22 by the controller 23.

[0045] The parameter detection unit 21 can at least detect the operating parameters of the motor 121, or detect the electrical parameters of the battery pack 15. In one embodiment, the parameter detection unit 21 can detect the output current, output voltage, or output power of the motor 121, or the working time of the motor 121 in a nailing cycle, i.e., the time of the nailing cycle, or the nailing frequency, or the number of revolutions of the motor in a nailing cycle, etc. In one embodiment, the parameter detection unit 21 can also detect the battery parameters of the battery pack 15, such as detecting the output voltage, current, power consumption, or power consumption of the battery pack in a nailing cycle. It is understandable that the parameter detection unit 21 may include one or more detection devices, which can detect a variety of different operating parameters or battery parameters separately or simultaneously.

[0046] refer to Figure 8 The control circuit of the nail gun shown in the figure is Figure 7 The control circuit has the same structure or parts as the Figure 8 The circuit labels in Figure 7 The control circuit includes at least a first control circuit 24 that controls the operation of the light-emitting device 18, and a second control circuit 25 that controls the motor 121. The first control circuit 24 is capable of independently controlling the lighting device 18 to illuminate when the motor 121 is not started. This means that the lighting device 18 is activated in advance when the motor 121 is not powered or powered but not started. Illuminating the lighting device 18 before nailing can illuminate the workpiece or work environment in advance, providing a better user experience. Even if the motor 121 fails to start, the lighting device 18 can still operate.

[0047] In one embodiment, the first control circuit 24 and the second control circuit 25 can be arranged on the same circuit board. In one embodiment, the first control circuit 24 and the second control circuit 25 can also be arranged on different circuit boards.

[0048] refer to Figure 9 The nail gun control circuit shown in the figure, the first control circuit 24 includes at least a light control switch 241 and a light circuit 242, wherein the light control switch 241 is operated by the user to conduct the current path between the light circuit 242 and the battery pack 15, so that the light device 18 can be illuminated. In this embodiment, the light control switch 241 can be a button switch, a toggle switch, a membrane switch, a lever switch, a micro switch, a travel switch, etc. The second control circuit 25 and Figure 7The control circuit in is basically the same, which is a circuit that controls the operation or shutdown of the motor 121, and can also be called the main control circuit of the nail gun 100. In this embodiment, the second control circuit 25 may include a host switch 251, a drive circuit 22 and a controller 23. After the host switch 251 is operated by the user, it can conduct the current path between the controller 23, the drive circuit 22 and the motor 121, and can control the operation of the motor 121 after the controller 23 outputs a control signal. For the implementation of the controller 23 controlling the operation of the motor 121, please refer to Figure 7 The control circuit is described in detail here. It should be noted that the host switch 251 can also be a button switch, a toggle switch, a membrane switch, a lever switch, a micro switch, a travel switch, etc.

[0049] In other embodiments, the light control switch 241 may be considered not to belong to the first control circuit 24 but to be connected to the first control circuit 24. Alternatively, the host switch 251 may be considered not to belong to the second control circuit 25 but to be connected to the second control circuit 25. In other words, other methods of dividing the control circuits may be used, as long as they can achieve the corresponding functions.

[0050] In one embodiment, the nail gun 100 may include a travel switch that functions as the aforementioned light control switch 241 when in a first travel position and as a main switch 251 when in a second travel position. In one embodiment, when the travel switch is in the second travel position, the controller 23 in the second control circuit 25 is turned on, but the motor 121 is not yet started. When the travel switch is operated to the third travel position, the motor 121 is started. In one embodiment, when the travel switch is operated to the fourth travel position, the controller 23 can perform specific control operations on the motor 121, such as controlling the motor 121 to operate at a constant speed.

[0051] In one embodiment, the light-emitting device 18 can be turned off by operating the light-emission control switch 241. Alternatively, the controller 23 in the second control circuit 25 can be used to de-energize the light-emitting circuit 242, thereby turning off the light-emitting device 18. In one embodiment, the controller 23 can also control the light-emitting circuit 242 to delay turning off, thereby delaying the extinguishing of the light-emitting device 18. It is understood that various components can be used to implement the functions of the light-emitting circuit 242, and this application does not limit the specific circuit structure of this circuit.

[0052] Continue to refer Figure 9The controller 23 can also control the lighting circuit 242 to change its circuit state based on the operating parameters of the motor 121 and / or the battery parameters of the battery pack 15 detected by the parameter detection unit 21, so that the lighting device 18 can change its lighting pattern to provide an alarm. The operating parameters of the motor 121 can include the output current, output voltage, output power, operating time of the motor 121 during a nailing cycle (i.e., nailing frequency), number of motor rotations during a nailing cycle, or temperature. Battery parameters can include the output voltage, current, energy consumption, power consumption, or temperature of the battery pack 15 during a nailing cycle. For example, if the controller 23 determines that the motor 121 is stalled based on the current of the motor 121, it can control the motor 121 to stop rotating and simultaneously control the lighting circuit 242 to change its circuit state, causing the lighting device 18 to flash and / or emit red light as an alarm. In this embodiment, the controller 23 can control the lighting device 18 to provide an alarm by at least one of the following: the number of light-emitting devices, the color of the light, the frequency of the light, the number of flashes, the brightness level, and the content of the light display. The controller 23 may also set an alarm based on the fault type or fault level.

[0053] refer to Figure 10 and Figure 11 Another control circuit of the nail gun shown in FIG. Figure 7 、 Figure 9 The control circuit has the same structure or parts as the Figure 10 and Figure 11 The circuit labels in Figure 7 、 Figure 9 The control circuit is Figure 8 、 Figure 9 The difference is that the starting state of the motor is also affected by the lighting control switch 241.

[0054] In this embodiment, the first control circuit 24 is capable of independently controlling the lighting device 18 to illuminate at least when the motor 121 is not activated. Specifically, the lighting device 18 is pre-activated when the motor 121 is powered on but not activated. In some embodiments, the first control circuit 24 is capable of independently controlling the lighting device 18 to illuminate at least when the motor 121 is not powered. Illuminating the lighting device 18 before nailing provides a better user experience by pre-illuminating the workpiece or work environment. Even if the motor 121 fails to start, the lighting device 18 can still operate. The first control circuit 24 includes at least a lighting control switch 241 and a lighting circuit 242. When the lighting control switch 241 is operated by the user, it establishes a current path between the lighting circuit 242 and the battery pack 15, thereby illuminating the lighting device 18. In this embodiment, the lighting control switch 241 can be a push button switch, a toggle switch, a membrane switch, a lever switch, a micro switch, a travel switch, or the like.

[0055] Continue to refer Figure 1 and Figure 2 The illustrated nail gun 100 includes, in addition to a main switch 251, a push rod switch 252. The push rod switch 252 serves as a safety switch and is located at the lower end of the firing assembly 16. When the user pushes the nail gun 100 downward in the nailing direction, i.e., in the direction of the second straight line 102, the push rod switch 252 abuts against the workpiece, thereby opening the push rod switch 252, i.e., triggering the push rod switch 252. In this embodiment, the nail gun 100 also includes a guide assembly 114. The guide assembly 114 can be attached to the housing 11 or disposed on the housing 11, partially or completely covering the firing assembly 16 and at least guiding the firing assembly 16 in the nailing direction. It is understood that the lower end of the guide assembly 114 can serve as a nail outlet. There is a height difference between the lower end of the push rod switch 252 and the lower end of the guide assembly 114. When the push rod switch 252 first contacts the workpiece, there is still a height difference between the lower end of the guide assembly 114 and the workpiece.

[0056] The drive circuit 22 at least controls the power supply to the motor 121. The controller 23 controls the operation of the motor 121. In this embodiment, the host switch 251 at least powers the controller 23. It can be understood that when the host switch 251 is triggered, a current path is established between the battery pack 15 and the controller 23. The drive circuit 22 is connected between the controller 23 and the motor 121. The host switch 251 and the push rod switch 252 jointly control the power supply to the drive circuit 22. When the host switch 251 and the push rod switch 252 are respectively triggered and maintained in the triggered state, the drive circuit 22 is energized and the motor 121 is energized. That is, when the host switch 251 and the push rod switch 252 are in the triggered state at the same time, the current path between the battery pack 15 and the drive circuit 22, the current path between the battery pack 15 and the motor 121, and the motor is energized but not started.

[0057] The controller 23 is configured to control the motor 121 to start when it determines that the motor is powered on and the light control switch 241 is triggered. That is, after the drive circuit 22 is powered on and the light control switch 241 is triggered, the controller 23 sends a start signal to the motor. After the motor 121 is powered on and receives the start signal, the motor 121 starts operating in response to the parameters of the start signal. After receiving the power-on control signal from the drive circuit 22 and the signal that the light control switch 241 is triggered, the controller 23 outputs the start signal to the motor 121.

[0058] In this embodiment, the controller 23 controls the motor 121 to start when it determines that the light control switch 241, the main switch 251, and the push-rod switch 252 are all triggered and remain in the triggered state. Upon receiving a signal indicating that the light control switch 241, the main switch 251, and the push-rod switch 252 are all triggered, the controller 23 outputs a start signal to the motor 121. In this embodiment, the first control circuit 24 independently controls the light-emitting device. In this embodiment, a detection circuit 231 is provided, connected to the first control circuit 24 and the controller 23. Upon receiving a signal indicating that the first control circuit 24 is turned on, the detection circuit 231 outputs a corresponding response signal to the controller 23. Optionally, the detection circuit 231 is configured to detect that the light control switch 241 is triggered and transmit a corresponding response signal to the controller 23. The controller 23 is connected to the drive circuit 22 and the detection circuit 231. Upon receiving a power-on signal from the drive circuit 22 and a response signal from the detection circuit 231, the controller 23 outputs a start signal to the motor 121. By setting up a circuit that can independently control the light-emitting device, the light-emitting device can be turned on in advance before the motor starts. During the process of starting the motor, the switch of the light-emitting device is controlled in conjunction, making the switch of the light-emitting device a necessary condition for starting the motor, thereby making the starting of the nail gun safer.

[0059] In some embodiments, the detection circuit 231 is an independent circuit or control chip for detecting the trigger state of the light control switch 241. In some embodiments, the detection circuit 231 is a detection module within the controller 23 for collecting the signal or current of the light control switch 241.

[0060] In some embodiments, the activation sequence of the host switch 251 and the push switch 252 does not affect the power-on of the drive circuit 22. In some embodiments, when the host switch 251 and the push switch 252 are activated in a specified sequence, the drive circuit 22 is powered on.

[0061] In this embodiment, if Figure 12 As shown, a lighting control switch 241 is also disposed within the handle portion 113, adjacent to the main unit switch 251. A trigger 2121 is disposed on the handle portion and is movably coupled to the handle portion, allowing the trigger 2121 to move relative to the handle portion housing. The lighting control switch 241 and the main unit switch 251 are located behind the trigger 2121, and the lighting control switch 241 is configured to be activated by the trigger 2121. The lighting control switch 241 is also configured to be activated by the trigger 2121 before the main unit switch 251. This allows the lighting device 18 to be illuminated before the motor 121 is activated, thereby facilitating illumination of the work area.

[0062] Illustratively, in the front-to-back direction, the host switch 251 is further away from the trigger 2121 relative to the lighting control switch 241, so that during the rotation or movement of the trigger 2121, it will first contact the lighting control switch 241 to light up the lighting element 196, and then contact the host switch 251 to start the fastener driver 100.

[0063] In some cases, the user can operate the trigger 2121 to rotate or move only a small angle or distance and maintain the position of the trigger 2121, so that the trigger 2121 can only trigger the lighting control switch 241 without triggering the host switch 251, thereby only lighting the lighting element 196 to illuminate the work area.

[0064] In some embodiments, the activation order of the lighting control switch 241, the main unit switch 251, and the push-rod switch 252 does not affect the activation of the motor 121. In some embodiments, when the lighting control switch 241, the main unit switch 251, and the push-rod switch 252 are activated in a prescribed order, the controller 23 controls the motor 121 to activate. Exemplarily, when a user sequentially activates the lighting control switch 241, the main unit switch 251, and the push-rod switch 252, the controller controls the motor 121 to activate. Exemplarily, the user activates the main unit switch 251 and the push-rod switch 252 to energize the drive circuit 22, and then activates the lighting control switch 241. After the controller detects that the drive circuit 22 is energized and then detects the triggering status of the three switches, it controls the motor 121 to activate.

[0065] In one embodiment, the first control circuit 24 and the driving circuit 22 may be disposed on the same circuit board. In one embodiment, the first control circuit 24 and the driving circuit 22 may also be disposed on different circuit boards.

[0066] The controller 23 can also control the lighting circuit 242 to change its circuit state based on the operating parameters of the motor 121 and / or the battery parameters of the battery pack 15 detected by the parameter detection unit 21, so that the lighting device 18 can change its lighting pattern to provide an alarm. The operating parameters of the motor 121 can include the output current, output voltage, output power, operating time of the motor 121 during a nailing cycle (i.e., nailing frequency), number of motor rotations during a nailing cycle, or temperature. Battery parameters can include the output voltage, current, energy consumption, power consumption, or temperature of the battery pack 15 during a nailing cycle. For example, if the controller 23 determines that the motor 121 is stalled based on the current of the motor 121, it can control the motor 121 to stop rotating and simultaneously control the lighting circuit 242 to change its circuit state, causing the lighting device 18 to flash and / or emit red light as an alarm. In this embodiment, the controller 23 can control the lighting device 18 to provide an alarm by at least one of the following: the number of light-emitting devices, the color of the light, the frequency of the light, the number of flashes, the brightness level, and the content of the light display. The controller 23 can also set an alarm based on the fault type or fault level. By incorporating a triggering check for the light control switch 241 during motor startup, the light-emitting device is also activated when the motor starts, further reducing the risk of accidental activation. Furthermore, the light-emitting device can be independently activated while maintaining synchronization with the motor, further enhancing the prompt and alarm functions of the light-emitting device.

[0067] In one embodiment, the controller 23 can also control the light-emitting device 18 to display different prompt information after determining the relationship between the air pressure in the cylinder 13 and the air pressure threshold. For example, when the air pressure is lower than the low-pressure threshold, the cylinder 13 may have an air leakage problem, and the controller 23 can control the light-emitting device 18 to output prompt information in a first manner, wherein the first manner may include at least one of the number of light-emitting devices, light-emitting color, light-emitting frequency, brightness level, and light-emitting display content. When the air pressure is basically equal to the air pressure threshold, the controller 23 can control the light-emitting device 18 not to emit light or to emit light in a second manner that is different from the first manner. When the air pressure is greater than the air pressure threshold, the controller 23 can control the light-emitting device 18 to emit light in a second manner that is different from the first and second manners. Similarly, the determination or warning method of the spring elastic force can also refer to the determination or warning method of the air pressure in the cylinder 13, which will not be repeated here.

[0068] refer to Figure 13 The control circuit of the light emitting device shown in FIG. Figure 7 The label is also used in Figure 7 The parameter detection unit 21 may include a sensor capable of detecting the total number of nails in the clip assembly 14 or the number of nails remaining, or a sensor capable of detecting the depth of driven nails, or a sensor capable of detecting the driving force, etc. This embodiment does not specifically limit the types, installation locations, or operating modes of the various sensors.

[0069] The controller 23 can obtain information transmitted by the parameter detection unit 21 and then control the light-emitting device 18 to display first information about the nails in the clip assembly 14 and / or second information about the nails that have been driven. In one embodiment, the first information may include information about the specific number of nails remaining in the clip assembly 14, or information about the range of the number of remaining nails, or an alarm message when the number of remaining nails is less than a preset number. The second information may include information about the driving depth of the nails that have been driven, or information about the driving force, or information about the driving angle, or information about the nailing interval, etc. A display screen may also be included. The digital tube may display the first information and / or the second information through one or more methods such as light intensity, flash frequency, number of flashes, light color, and light quantity. The display screen can directly display content data, and the light-emitting device 18 can display a graphic and number of nails, or display an actual image or depth of the driven nails, or display a nailing animation. Any light-emitting device that can display the above information, regardless of whether it is a digital tube or a display screen, is within the scope of protection of this application.

[0070] In one embodiment, the controller 23 can also display the fault information of the nail gun 100 or the current working mode or battery pack information. The fault information may include various common faults, such as overtemperature, overvoltage, undervoltage, overcurrent, stall, anti-lock, etc. The working mode may include a single-shot mode and a single-drive mode, and a continuous-shot mode is a continuous-drive mode. The battery information may include the remaining power or remaining time of the battery pack, or the output voltage, or the output current, or the temperature, etc. In this embodiment, the light-emitting device 18 can also display the above-mentioned fault information or working mode or battery pack information by at least one of the following methods: light intensity, flash frequency, number of flashes, light color, light quantity, and display content data.

[0071] In one embodiment, the light-emitting device 18 can be divided into a lighting device and a fault indication device. In some embodiments, the lighting device and the fault indication device can be the same device or different devices. If the lighting device and the fault indication device are the same lighting device, when the nail gun 100 is not faulty, the lighting device 18 remains constantly lit. When a fault occurs, the lighting device 18 can indicate the fault by flashing a certain frequency, color, number of flashes, or fault code, or by turning off the lighting device. If the lighting device and the fault indication device are different lighting devices, when the nail gun 100 is not faulty, the lighting device can remain constantly lit, while the fault indication device can remain permanently off. When a fault occurs, the lighting device can remain constantly lit or turn off, and the fault indication device can indicate the fault in the manner described above. If the lighting device and the fault indication device are different lighting devices, when the nail gun 100 is not faulty, the lighting device and the fault indication device can remain constantly lit. When a fault occurs, the lighting device can remain constantly lit or turn off, and the fault indication device can turn off to indicate the fault or indicate the fault in the manner described above. In one embodiment, the fault indicator device may indicate the fault level by illuminating the color and / or flashing frequency when or after indicating the fault type. For example, a green light may be permanently on when there is no fault; a yellow light may be on or flashing when there is a minor fault (such as undervoltage protection or overtemperature protection); and a red light may be on or flashing when there is a major fault (such as overcurrent protection, stall protection, or anti-lock braking protection).

[0072] In one embodiment, parameter detection unit 21 may be a brightness sensor or other sensor capable of detecting the light intensity in the nail gun's operating environment. Controller 23 may control whether light-emitting device 18 is illuminated or the light intensity thereof based on the detected light intensity. For example, when operating outdoors during daytime in good weather, light-emitting device 18 may be turned off, or at least the lighting device may be turned off. When operating indoors in dim light, the brightness of the light-emitting device may be increased, or at least the brightness of the lighting device may be enhanced.

[0073] The above shows and describes the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and that any technical solutions obtained by equivalent substitution or equivalent transformation fall within the scope of protection of this application.

Claims

1. A nail gun comprising: case; a motor, disposed in the housing; a firing assembly configured to move from an initial position to a firing position to drive a nail into a workpiece during a nailing cycle, and to move from the firing position to the initial position; at least one light-emitting device, disposed on the housing; a drive circuit for controlling at least the energization of the motor; a first control circuit configured to independently control the light emitting device at least when the motor is not started; a light-emitting control switch connected to the first control circuit; The controller at least controls the operation of the motor; the controller is configured to: control the motor to start when receiving a signal that the motor is powered on and the light control switch is triggered.

2. The nail gun according to claim 1, characterized in that A host switch is also included, and the host switch controls at least powering on the controller.

3. The nail gun according to claim 2, characterized in that It also includes a push rod switch, which is arranged at the lower end of the firing assembly. When the push rod switch abuts against the workpiece, the push rod switch is triggered.

4. The nail gun according to claim 3, characterized in that When the host switch is triggered and the push rod switch is triggered, the drive circuit is connected and the motor is powered.

5. The nail gun according to claim 1, characterized in that It also includes a detection circuit for detecting that the light-emitting control switch is triggered and sending a corresponding signal indicating that the light-emitting control switch is triggered to the controller.

6. The nail gun according to claim 1, characterized in that When the light emitting device is on, the motor is not necessarily powered on.

7. The nail gun according to claim 1, characterized in that The first control circuit and the driving circuit are arranged on the same circuit board.

8. The nail gun according to claim 1, wherein: The first control circuit and the driving circuit are arranged on different circuit boards.

9. The nail gun according to claim 1, wherein: The nail gun also includes a parameter detection unit, which is configured to detect the operating parameters of the motor and / or the battery parameters of the battery pack that powers the nail gun; the controller is configured to at least control the light-emitting device to change the light-emitting form to issue an alarm when it is determined that the nail gun has failed based on the operating parameters and / or the battery parameters.

10. The nail gun according to claim 9, characterized in that The light emitting device is configured to provide an alarm prompt through at least one of the number of light emitting devices, light emitting color, light emitting frequency, number of flashes, brightness level, and light emitting display content.

11. A nail gun comprising: case; a motor, disposed in the housing; a firing assembly configured to move from an initial position to a firing position to drive a nail into a workpiece during a nailing cycle, and to move from the firing position to the initial position; at least one light-emitting device, disposed on the housing; a light control switch, for controlling at least the state of the light emitting device; a controller, at least controlling the operation of the motor; A host switch, at least controlling the power supply of the controller; a push rod switch, disposed at the lower end of the firing assembly, and triggered when the push rod switch abuts against the workpiece; The controller is configured to control the motor to start when receiving a signal indicating that the lighting control switch, the host switch, and the push rod switch are all triggered.

12. A nail gun comprising: case; a motor, disposed in the housing; a firing assembly configured to move from an initial position to a firing position to drive a nail into a workpiece during a nailing cycle, and to move from the firing position to the initial position; at least one light-emitting device, disposed on the housing; a drive circuit for controlling at least the energization of the motor; a first control circuit configured to independently control the light emitting device at least when the motor is not started; a controller, at least controlling the operation of the motor; A detection circuit is connected to the first control circuit and the controller; the controller is configured to control the start-up of the motor according to the status of the drive circuit and the detection circuit.

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