Attachment for hand-held rotary power tool

Abstract

A power tool assembly includes a handheld rotary power tool and an accessory. The electric tool comprises a power source, a tool shell and a motor arranged in the tool shell. The motor includes a motor output shaft configured to be mechanically connected to an accessory, which may also be part of the assembly. The power tool includes a controller disposed within a tool housing. The controller is configured to control a speed of the motor. The accessory is configured to be connected to a tool housing. Further, the accessory is configured to at least one of electrically connect to the controller, electrically connect to the power source, and mechanically connect to the motor output shaft.

Description

Background Technology

[0001] There are many types of specialized handheld rotary power tools. These tools typically consist of a tool housing shaped and sized for easy gripping and operation, and a motor housed within the housing. The motor's output shaft drives various rotary accessories, including cutting blades, grinding heads, polishing heads, etc., which are detachably attached to the motor's output shaft. These accessories are used to modify the workpiece. Handheld rotary power tools can also utilize "attachments," which are structures attached to the power tool to enhance its functionality. Unlike accessories, attachments do not modify the workpiece. While accessories such as nose cups, plunger attachments, and cutting guides enhance the user's ability to operate the power tool, it is desirable to provide additional functionality to accessories to enhance tool speed control, workpiece illumination, tool stability, and other characteristics affecting tool use. Summary of the Invention

[0002] In some respects, handheld rotary power tools can be mechanically connected to accessories to perform operations on workpieces. Furthermore, power tools can be electrically and / or mechanically connected to accessories that enhance and / or improve the functionality of the power tool. The increased functionality of both the power tool and the accessories is achieved by providing electrical and / or mechanical connections between the accessories and the power tool.

[0003] In some embodiments, a wired or wireless connection is established between the switch or sensor on the accessory and the controller of the power tool, thereby allowing control of the power tool's speed at the accessory. The accessories described herein with wired or wireless connection to the controller can be compared to some power tools and accessories that do not provide speed control or only provide speed control on the tool housing, which may be an inconvenient location in some applications.

[0004] In some embodiments, the power tool powers a functional accessory, enabling the accessory to provide enhanced functionality, such as, but not limited to, lighting, tool stability, and monitoring and display of tool operating status. In other embodiments, the power tool powers a functional accessory, allowing fluids, such as water or air, to be applied to the workpiece modification fitting and / or the workpiece itself. These fluids can be used to provide cooling and / or improve visibility during tool operation.

[0005] In some embodiments, the power tool is mechanically connected to a functional accessory, such as a fluid pump or a stabilized gyroscope (i.e., a flywheel), in such a way that the power tool's actuator drives the functional accessory.

[0006] The interconnections described above between the accessory and the power tool can be used alone or in combination with other interconnections. For example, in some embodiments, a wired or wireless connection is established between a switch or sensor on the accessory and the controller of the power tool, the power tool supplies power to the functional accessory, and / or the power tool is mechanically connected to the functional accessory.

[0007] In some aspects, a handheld rotary power tool assembly includes a handheld rotary power tool and an accessory. The handheld rotary power tool includes a power source, a tool housing, and a motor disposed within the tool housing. The motor has a motor output shaft configured to be mechanically connected to the accessory. The power tool includes a controller disposed within the tool housing. The controller is configured to control the speed of the motor. Furthermore, the power tool includes an accessory configured to be connected to the tool housing, the accessory being configured to be at least one of: electrically connected to the controller, electrically connected to the power source, and mechanically connected to the motor output shaft.

[0008] In some embodiments, the handheld rotary power tool assembly includes accessories.

[0009] In some embodiments, the accessory is a flexible shaft accessory. The flexible shaft accessory includes a shaft body having a first end detachably connected to a tool housing and a second end opposite the first end. The second end has a handle configured to be held in a user's hand. The flexible shaft accessory also includes an internal rotary transmission line having a proximal end connected to a spindle and a distal end supported on the handle. The rotary transmission line transmits rotational output from a motor output shaft to the distal end of the rotary transmission line. The distal end of the rotary transmission line is configured to connect to an accessory. The handle includes a speed selection device. This speed selection device is electrically connected to a controller, and the controller controls the motor speed based on an output signal from the speed selection device.

[0010] The output signal includes either a first output signal or a second output signal. The speed selection device is a push-button switch, configured such that when the push-button switch is not activated, a first output signal is sent to the controller. Furthermore, the controller maintains the current motor speed based on the first output signal. When the push-button switch is activated, a second output signal is sent to the controller, and the controller increases the motor speed by a predetermined amount.

[0011] In some embodiments, the speed selection device is a rotary switch. The output signal corresponds to the angular position of the rotary switch, and the controller adjusts the motor speed according to the output signal.

[0012] In some embodiments, the handheld device has an on / off switch that is electrically connected to the controller and configured to control the power supply to the motor.

[0013] In some embodiments, the handheld device includes a speed selection device. This speed selection device is configured to communicate wirelessly with a controller, and the controller controls the motor speed based on wireless signals received from the speed selection device.

[0014] In some embodiments, the wireless signal includes a first wireless signal or a second wireless signal. The speed selection device is a push-button switch configured such that when the push-button switch is not activated, the first wireless signal is sent to the controller, and the controller maintains the current speed of the motor according to the first wireless signal. When the push-button switch is activated, the second wireless signal is sent to the controller, and the controller increases the speed of the motor by a predetermined amount.

[0015] In some embodiments, the speed selection device is a rotary switch, the wireless signal corresponds to the angular position of the rotary switch, and the controller adjusts the speed of the motor based on the wireless signal.

[0016] In some embodiments, the handheld device includes an on / off switch wirelessly connected to the controller and is configured to control the power supply to the motor.

[0017] In some embodiments, the accessory is a cutting guide detachably attached to the tool housing. The cutting guide is electrically connected to the tool housing such that power from a power source is supplied to a light source supported on the cutting guide.

[0018] In some embodiments, the light source includes LEDs arranged to direct illumination onto the workpiece.

[0019] In some embodiments, the cutting guide includes a guide housing that defines a window opening configured to allow observation of the workpiece through the guide housing, and the window opening is filled with a magnifying material.

[0020] In some embodiments, the accessory is a plunger router (electric milling machine) accessory, comprising a base, a first guide rail fixed to the base, and a second guide rail extending from the base. Furthermore, the plunger router accessory also includes a plunger housing supported above the base by the first and second guide rails. The plunger housing allows the power tool to be supported in a spaced-apart relationship relative to the base. The plunger housing includes a first guide rail mounting portion connected to the first guide rail, a second guide rail mounting portion connected to the second guide rail, and a tool mounting portion disposed between the first and second guide rail mounting portions and connecting the first guide rail mounting portion to the second guide rail mounting portion. The tool mounting portion is configured to receive and support the power tool housing. The tool mounting portion includes a collar portion configured to surround and support the power tool. The first guide rail mounting portion has a first handle projecting from its outer surface, and the second guide rail mounting portion has a second handle projecting from its outer surface. One of the first and second handles includes a speed selection device. The speed selection device is electrically connected to a controller, and the controller controls the motor speed based on an output signal from the speed selection device.

[0021] In some embodiments, the other of the first handle and the second handle includes an on / off switch configured to control the on / off mode of the power tool.

[0022] In some embodiments, the output signal includes a first output signal or a second output signal. The speed selection device is a push-button switch, configured such that when the push-button switch is not activated, a first output signal is sent to the controller, and the controller maintains the current speed of the motor according to the first output signal. When the push-button switch is activated, a second output signal is sent to the controller, and the controller increases the speed of the motor by a predetermined amount.

[0023] In some embodiments, the speed selection device is a rotary switch, the output signal corresponds to the angular orientation of the rotary switch, and the controller adjusts the speed of the motor based on the output signal.

[0024] In some embodiments, the accessory is a nose mask detachably attached to the tool housing to surround the motor output shaft. The nose mask is electrically connected to the tool housing such that power from a power source is supplied to a light source supported on the nose mask.

[0025] In some embodiments, the light source includes LEDs arranged to direct illumination onto the workpiece.

[0026] In some embodiments, the light source includes a first group of LEDs configured to provide a first light field and a second group of LEDs configured to provide a second light field, wherein the first light field has a greater intensity and a smaller area than the second light field.

[0027] In some embodiments, the nasal mask includes a sensor electrically connected to a controller, such that the sensor receives power from the controller. The controller receives an output signal from the sensor and is configured to control a light source based on the output signal.

[0028] In some embodiments, the sensor is an accelerometer, and the controller controls the light source to provide an indication of the orientation of the power tool in space based on the output signal received from the accelerometer.

[0029] In some embodiments, the sensor detects the current consumed by the motor, and the controller controls the light source to provide an indication of the current consumed by the motor.

[0030] In some embodiments, the accessory is a nose mask detachably attached to the tool housing to surround the motor output shaft. The nose mask includes a speed selection device. This speed selection device is electrically connected to a controller, and the controller controls the motor speed based on an output signal from the speed selection device.

[0031] In some embodiments, the output signal includes a first output signal or a second output signal. Furthermore, the speed selection device is a push-button switch configured such that when the push-button switch is not activated, a first output signal is sent to the controller, and the controller maintains the current speed of the motor based on the first output signal. When the push-button switch is activated, a second output signal is sent to the controller, and the controller increases the speed of the motor by a predetermined amount.

[0032] In some embodiments, the speed selection device is a rotary switch. The output signal corresponds to the angular position of the rotary switch, and the controller adjusts the motor speed according to the output signal.

[0033] In some embodiments, the tool housing includes a main handle. Additionally, the attachment is a sewing tool grip attachment. The sewing tool grip attachment includes an attachment mount configured to be detachably attached to the tool housing and an auxiliary handle. The auxiliary handle has a different shape and / or orientation than the main handle. The auxiliary handle includes a speed selection device. This speed selection device is electrically connected to a controller, and the controller controls the speed of the motor based on an output signal from the speed selection device.

[0034] In some embodiments, the output signal includes a first output signal or a second output signal. The speed selection device is a push-button switch, configured such that when the push-button switch is not activated, a first output signal is sent to the controller, and the controller maintains the current speed of the motor according to the first output signal. When the push-button switch is activated, a second output signal is sent to the controller, and the controller increases the speed of the motor by a predetermined amount.

[0035] In some embodiments, the speed selection device is a rotary switch, the output signal corresponds to the angular position of the rotary switch, and the controller adjusts the speed of the motor based on the output signal.

[0036] In some embodiments, the auxiliary handle includes an on / off switch electrically connected to the controller and is configured to control the power supply to the controller.

[0037] In some embodiments, the sewing machine's grip attachment includes a magnifying glass. The magnifying glass is connected to the sewing machine's grip attachment via a pivot pin, allowing it to pivot relative to the grip attachment between a folded position and an extended position. In the folded position, the magnifying glass covers the surface of the sewing machine's grip attachment. In the extended position, the magnifying glass is arranged side-by-side with the sewing machine's grip attachment.

[0038] In some embodiments, the sewing tool's gripping attachment includes an internal cavity, an opening connecting the internal cavity to the surrounding environment of the sewing tool's gripping attachment, and a blower disposed within the internal cavity. The blower has a fan motor electrically connected to a power source and a fan disposed within the opening. In some embodiments, the fan is driven by the fan motor. In other embodiments, the fan is mechanically connected to and driven by a motor output shaft.

[0039] In some embodiments, the accessory is a foot pedal accessory wirelessly connected to a controller. The foot pedal accessory includes a base, a pedal pivotally connected to the base, and a sensor configured to detect the angle of the pedal relative to the base and wirelessly provide an output signal to the controller. The output signal corresponds to the detected angle, and the controller controls the speed of the motor based on the output signal from the foot pedal accessory.

[0040] In some embodiments, the accessory is a saw accessory. The saw accessory includes an accessory housing configured to be detachably connected to a tool housing and surround a portion of the tool housing's circumference. The saw accessory also includes a cutting accessory connector and a gear set disposed within the accessory housing. The gear set is configured to convert the rotational output of a motor into a gear-based rotational output suitable for driving a cutting accessory connected to the cutting accessory connector. The gear set is connected to the cutting accessory connector and transmits the rotational output of the gear set to the cutting accessory connector. At least one of a light control switch and a speed control switch is disposed within the accessory housing. At least one of the light control switch and the speed control switch is electrically connected to a controller. The controller controls the speed of the motor based on an output signal from the speed control switch and controls the light source based on an output signal from the light control switch.

[0041] In some embodiments, the cutting accessory connector is configured to connect the jigsaw blade to the output end of the gear set. The saw accessory includes a light source disposed on the accessory housing, configured to direct light towards the workpiece. In some embodiments, at least one of a light control switch and a speed control switch is a light control switch. In some embodiments, the light source provides general illumination. In some embodiments, the light source is a laser light source disposed on the accessory housing, configured to direct a laser beam towards the workpiece.

[0042] In some embodiments, the cutting accessory connector is configured to connect the circular saw blade to the output end of the gear set. The saw accessory includes a light source disposed on the accessory housing, which is configured to direct light toward the workpiece. In some embodiments, at least one of a light control switch and a speed control switch is a light control switch. In some embodiments, the light source provides general illumination. In some embodiments, the light source is a laser light source disposed on the accessory housing, which is configured to direct a laser beam toward the workpiece.

[0043] In some embodiments, the cutting accessory connector is configured to connect the pipe cutting saw blade to the output end of the gear set. The saw accessory includes a set of rollers pivotally mounted within the accessory housing so as to protrude from the outer surface of the accessory housing. The rollers have a rotation axis parallel to the rotation axis of the motor output shaft. Furthermore, these rollers are circumferentially spaced around the outer surface.

[0044] In some embodiments, the accessory is a press assembly configured to rest on a support surface. The press assembly includes: a base resting on the support surface, a guide rail extending from the base, and a press housing supporting a power tool spaced apart from the base. The press housing includes: a guide rail mounting portion connected to the guide rail; a tool mounting portion configured to receive and support the power tool housing; a gear set movably connecting the tool mounting portion to the guide rail mounting portion; and a lever mechanically connected to the gear set. Operation of the lever adjusts the position of the tool mounting portion relative to the base between a first position where the tool mounting portion is at a first distance from the base and a second position where the tool mounting portion is at a second distance from the base. The lever includes a speed selection device. The speed selection device is electrically connected to a controller, and the controller controls the speed of the motor based on an output signal from the speed selection device.

[0045] In some embodiments, the output signal includes a first output signal or a second output signal. The speed selection device is a push-button switch, configured such that when the push-button switch is not activated, a first output signal is sent to the controller, and the controller maintains the current speed of the motor according to the first output signal. When the push-button switch is activated, a second output signal is sent to the controller, and the controller increases the speed of the motor by a predetermined amount.

[0046] In some embodiments, the speed selection device is a rotary switch. The output signal corresponds to the angular position of the rotary switch, and the controller adjusts the motor speed according to the output signal.

[0047] In some embodiments, the accessory is a water supply accessory, comprising an accessory housing having an accessory mounting base configured to be detachably connected to a tool housing. The water supply accessory includes a reservoir disposed within the accessory housing and configured to contain fluid, and a fluid pump disposed within the accessory housing. The water supply accessory includes: a first fluid line connecting the reservoir to the inlet of the fluid pump; a second fluid line connecting to the output of the fluid pump, the second fluid line being configured to point towards a workpiece; and a sensor supported on the accessory housing and configured to detect the temperature of the accessory. The sensor is also configured to output an output signal representing the temperature of the accessory to a controller. The controller is configured to control the operation of the fluid pump based on the sensor's output signal.

[0048] In some embodiments, the accessory is a tool stabilizer accessory. The tool stabilizer accessory includes a stabilizer housing surrounding an output shaft and an accessory mount supported on the stabilizer housing. The accessory mount is configured to detachably connect the stabilizer housing to the tool housing. The tool stabilizer accessory includes a flywheel disposed within the stabilizer housing. The flywheel has a collar and a speed multiplier, the collar having an inner surface surrounding the output shaft. The speed multiplier is disposed between the collar and the output shaft. The outer surface of the speed multiplier connects to the inner surface of the collar, and the inner surface of the speed multiplier connects to the output shaft, thereby causing the flywheel to rotate at a speed greater than the output shaft's rotational speed.

[0049] In some embodiments, the accessory is a drill drive accessory detachably attached to a power tool. The drill drive accessory includes a gear set having a drive input shaft mechanically connected to a motor output shaft and a drive output shaft rotating at a different speed than the motor output shaft. The drive output shaft is configured to be detachably attached to a drill bit. The drill drive accessory is configured to transmit the rotational output of the motor output shaft to the drill bit at a modified rotational speed. Attached Figure Description

[0050] Figure 1 It is a top perspective view of a handheld rotary power tool, including a nose shield attachment supported at the front of the power tool, and a cutter wheel accessory shown in exploded view.

[0051] Figure 2 yes Figure 1 A side view of a power tool, showing a portion of the tool housing removed to allow view of the internal components of the rotating power tool, and omitting the nose shield attachment and cutting wheel accessory.

[0052] Figure 3 This is a circuit diagram of a rotary power tool.

[0053] Figure 4 This is a perspective view of the nose mask accessory, with the embedded electrical conductor shown in dashed lines.

[0054] Figure 5 This is a perspective view of a portion of a rotary power tool, showing a light source located at the distal end of the nose mask.

[0055] Figure 6 This is a side view of a rotary power tool that includes a nose shield attachment designed to support the toes of a dog or cat.

[0056] Figure 7 Through Figure 6 A diagram illustrating how a rotary power tool can be used to trim a dog's nails.

[0057] Figure 8 yes Figure 6 A perspective view of the nose mask, showing the ring of light used to illuminate the dog's toenails.

[0058] Figure 9 This is a side view of a rotary power tool with a nose mask attachment, showing the first lighting mode of the nose mask.

[0059] Figure 10 yes Figure 9 A side view of a rotary power tool, showing the second lighting mode of the nose mask.

[0060] Figure 11 This is a schematic diagram of a nose mask that includes an exemplary indicator light source used in conjunction with a current sensor.

[0061] Figure 12 This is a schematic diagram of a nose mask that includes another exemplary indicator light source used in conjunction with a current sensor.

[0062] Figure 13 This is a schematic diagram of a nose mask that includes another exemplary indicator light source used in conjunction with an accelerometer.

[0063] Figure 14 This is a schematic diagram of a nose mask including an exemplary speed control switch.

[0064] Figure 15 This is a schematic diagram of an alternative embodiment of a rotary power tool circuit.

[0065] Figure 16 This is a schematic diagram of a nose mask that includes another exemplary speed control switch.

[0066] Figure 17 This is a schematic diagram of a nose mask that works wirelessly with a foot pedal speed control switch.

[0067] Figure 18 This is a schematic diagram of the water supply attachment that is supported on the nasal mask.

[0068] Figure 19 yes Figure 18 Alternative forms of the schematic diagram.

[0069] Figure 20 This is a schematic diagram of a rotary power tool including a drill drive attachment.

[0070] Figure 21 This is a schematic diagram of a tool press accessory, in which rotary power tools are shown with thin dashed lines and electrical conductors are represented by thick dashed lines.

[0071] Figure 22 yes Figure 21 An alternative form of the diagram, where dashed lines represent electrical conductors.

[0072] Figure 23 This is a perspective view of the cutting guide accessory.

[0073] Figure 24 It is assembled Figure 23 A schematic diagram of a rotary power tool with a cutting guide attachment.

[0074] Figure 25 yes Figure 23 A schematic diagram of a cutting guide, in which electrical conductors are shown in dashed lines.

[0075] Figure 26 This is a perspective view of a router plunge attachment for an engraving machine.

[0076] Figure 27 This is a schematic diagram of the handle in an alternative embodiment.

[0077] Figure 28 yes Figure 26 A schematic diagram of a plunger attachment for an engraving machine, in which the rotary power tool is shown in thin dashed lines and the electrical conductor is shown in thick dashed lines.

[0078] Figure 29 It is a perspective view of the finely crafted grip attachment, showing the magnified device in a folded and stored configuration.

[0079] Figure 30 It is assembled Figure 29 A perspective view of a rotary power tool with a finely crafted handle attachment, showing an enlarged view of the device in a folded and stored configuration.

[0080] Figure 31 yes Figure 29 A perspective view of the finely crafted gripping attachment, showing the magnified device in an unfolded configuration.

[0081] Figure 32This is a perspective view of an alternative embodiment of the fine craftsman's grip attachment, showing the enlarged device in an unfolded configuration and including a blower.

[0082] Figure 33A This is a perspective view of the flexible shaft accessory.

[0083] Figure 33B It is assembled Figure 33A A perspective view of a rotary power tool with a flexible shaft attachment.

[0084] Figure 33C This is a cross-sectional view of the flexible shaft accessory viewed along line 33C-33C, showing the rotating transmission line coaxially arranged within the flexible shaft body.

[0085] Figure 34 yes Figure 33A A perspective view of the flexible head of the -C flexible shaft accessory, showing the light source and light control switch set on the flexible head.

[0086] Figure 35 This is a side cross-sectional view of a stabilizer attachment assembled with a rotary power tool.

[0087] Figure 36 This is a schematic diagram of a pipe cutter attachment assembled with a rotary power tool.

[0088] Figure 37 This is an exploded side view of the jigsaw attachment assembled with the rotary tool.

[0089] Figure 38 This is a side view of the jigsaw attachment assembled with the rotary tool.

[0090] Figure 39 This is an exploded side view of the circular saw attachment assembled with the rotary tool.

[0091] Figure 40 This is a side view of a circular saw attachment assembled with a rotary tool. Detailed Implementation

[0092] refer to Figure 1 and Figure 2The handheld rotary power tool 1 includes a tool housing 2. The tool housing 2 is generally cylindrical and ergonomically shaped for easy gripping by the user, with the central portion 4 of the tool housing 2 serving as a handle or grip for the rotary power tool 1. The rotary power tool 1 includes an electric motor 6 disposed within the tool housing 2. The electric motor 6 can be a brushed or brushless DC motor and is controlled by a controller 36 via a circuit 20, which includes an on / off switch 22 and a power supply 18. The output shaft 8 of the electric motor 6 extends parallel to the extension direction of the tool housing 2 and is gearlessly connected to a tool spindle 10. The tool spindle 10 extends outward from a first end 12 of the tool housing 2 and is configured to provide mechanical connection with various workpiece modification accessories 14 for workpiece machining. Accessories 14 may include, but are not limited to, engraving cutters, milling cutters, grinding wheels, grinding stones, polishing heads, polishing discs, polishing brushes, cutting discs, saw blades, and drill bits. Figure 1 An exemplary accessory 14 in the form of a cutting disc is shown in the figure.

[0093] Motor 6 is powered by power supply 18, which is detachably connected to the second end 13 of tool housing 2. Switch 22 is disposed in circuit 20 between controller 36 and power supply 18. Electrical switch 22 is entirely disposed within tool housing 2 and is actuated by the operator of rotary power tool 1 via switch actuator 24. Switch actuator 24 extends through an opening in tool housing 2 so that it is accessible to the operator of rotary power tool 1.

[0094] In the illustrated embodiment, the power source 18 includes a rechargeable battery pack 28 detachably connected to the second end 13 of the tool housing. In other embodiments, the power source 18 may consist of a primary battery housed within the tool housing 2. In still other embodiments, the power source 18 may be located away from the tool housing 2 and connected to the tool housing 2 via a wire (not shown) wrapped with conductive leads.

[0095] When the electrical switch 22 is in the "ON" position, the motor 6 drives the tool spindle 10 at a speed of over 10,000 rpm. In some embodiments, the operator can adjust the speed of the motor 6 between 5,000 rpm and 40,000 rpm using the speed control knob 38.

[0096] In some embodiments, the rotary power tool 1 includes an output shaft locking mechanism 30 having a pressable control button 32 that covers a locking shaft 34. When actuated by the control button 32, the locking shaft 34 is configured to engage with an opening in the output shaft 8 to prevent rotation of the output shaft 8 when the fitting 14 is attached to it. The output shaft locking mechanism 30 also includes a spring 35 that biases the locking shaft 30 and the control button 32 into a disengaged configuration.

[0097] The tool housing 2 encapsulates the motor 6, electrical switch 22, switch actuator 24, output shaft locking mechanism 30, speed control knob 38, output shaft support bearing 39, controller 36, and other auxiliary components and structures.

[0098] refer to Figure 2 and 3 The controller 36 is part of a printed circuit board assembly (PCBA) 40, which includes other auxiliary electronic devices (not shown) supported on a printed circuit board (PCB) 42. The electronics supported on the PCBA 40, including the controller 36, are powered by a power supply 18. The controller 36 can communicatively connect to various operating components of the rotary power tool 1, including but not limited to electrical switches 22, rotation speed control knobs 38, battery management systems (BMS), sensors, or other input devices. The term "communicative connection" as used herein can refer to a direct wired connection via, for example, conductive signal lines, a shared communication bus, or alternatively, a wireless connection. As used herein, references to wireless connection or communication indicate that the device can be configured to communicate wirelessly via one or more of the following: RF (radio frequency) specifications, cellular telephone channels (analog or digital), cellular data channels, Bluetooth specifications, Wi-Fi specifications, satellite transceiver specifications, infrared transmission, Zigbee specifications, local area networks (LANs), wireless local area networks (WLANs), or any other alternative configurations, protocols, or standards known to those skilled in the art.

[0099] Therefore, the controller 36 can receive information from these devices and selectively activate and operate various operating components. For example, the controller 36 can control the voltage supplied to the motor 6.

[0100] In some embodiments, controller 36 includes one or more storage devices and one or more processors. The processor can be any combination of a general-purpose or special-purpose processor, CPU, etc., which can execute programming instructions or control code related to the operation of the rotary power tool 1. The storage device (i.e., memory) can represent random access memory (e.g., DRAM) or read-only memory (e.g., ROM or FLASH). In some embodiments, the processor executes programming instructions stored in the memory. The memory can be a component separate from the processor or can be contained on a board within the processor. Alternatively, controller 36 may not use a processor; for example, it may be constructed using a combination of discrete analog or digital logic circuits (e.g., switches, amplifiers, integrators, comparators, flip-flops, AND gates, etc.) to perform control functions, rather than relying on software.

[0101] In some embodiments discussed below, controller 36 includes a network interface so that controller 36 can connect to and communicate through one or more networks (not shown). Controller 36 may also include one or more transmitting, receiving, or transceiver components for transmitting and / or receiving communication with other devices that are communicatively coupled to rotary power tool 1. Alternatively, the transmitting, receiving, or transceiver components may be located outside the controller 36 board. Typically, the PCBA 40 containing controller 36 can be located anywhere suitable throughout the tool housing 2.

[0102] The various functions performed by controller 36 may be implemented or supported by one or more computer programs, each computer program consisting of computer-readable program code and contained in a computer-readable medium. The terms "application program" and "program" refer to one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, instances, associated data, or portions thereof, suitable for implementation in appropriate computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer-readable medium" includes any type of computer-accessible medium, such as read-only memory (ROM), random access memory (RAM), hard disk drive, optical disc (CD), digital video disc (DVD), or any other type of storage. "Non-transitory" computer-readable medium does not include wired, wireless, optical, or other communication links that transmit transient electrical or other signals. Non-transitory computer-readable medium includes media that can permanently store data and media that can store data and be rewritten later, such as rewritable optical discs or erasable storage devices.

[0103] The tool housing 12 includes an annular protrusion 11 centered on the axis of rotation of the spindle 10. The protrusion 11 surrounds the spindle 10 with sufficient clearance to allow rotation of the spindle 10 within it and has external threads 15 that allow attachment 16 to be connected to the rotary power tool 1. The spindle 10 extends through the protrusion 11, with its end located outside the protrusion 11. Furthermore, the tool housing 2 may include two or more electrical contacts 13 (only two are shown) disposed on the first end 12. In the illustrated embodiment, the electrical contacts 13 are disposed on the first end 12 and spaced apart around the protrusion 11. The electrical contacts 13 are electrically connected to a circuit 20 and provide electrical connection between components of the circuit 20 and attachment 16 mechanically connected to the rotary power tool 1.

[0104] In some applications, the rotary power tool 1 can be assembled with accessories 16, which are structures that can be mechanically connected to the rotary power tool 1 and enhance its functionality. Unlike accessory 14, accessories 16 do not modify the workpiece. While some accessories 16 (including, but not limited to, nose shield 100, engraving machine plunger accessory 150, cutting guide 130, and other accessories (some of which will be described below)) enhance the user's ability to operate the rotary power tool 1, it is desirable to provide accessories 16 with added functionality to enhance tool speed control, workpiece illumination, tool stability, and other features that contribute to tool use and improve the user experience.

[0105] refer to Figures 3 to 5 Example accessory 16 is a nose mask 100. The nose mask 100 has a generally hollow, thick-walled, cylindrical nose shell 102. The inner surface 103 of the nose shell 102 includes threads 105 configured to engage with the external threads 15 of the protrusion 11. The outer surface 109 of the nose shell 102 has a circumferentially extending concave surface and provides auxiliary gripping force, enabling the user to hold the rotary power tool 1 in a "pencil grip". The centerline 112 of the nose mask 100 is aligned with the rotation axis 9 of the spindle 10 and the motor output shaft 8.

[0106] The nose mask 100 includes a pair of embedded electrical conductors 108 extending between a proximal end 104 and a distal end 106 of the nose mask 100. One end of the electrical conductors 108 is electrically connected to an electrical contact 110 disposed on the proximal end 104 of the nose mask. In the illustrated embodiment, the nose mask 100 includes two electrical conductors 108, and therefore two electrical contacts 110, but is not limited to having only two electrical conductors. The nose mask 100 is detachably attached to a first end 12 of the housing via threaded engagement between an external thread 15 of the protrusion and an internal thread 105 of the nose mask. When the nose mask 100 is attached to the first end 12 of the tool housing, the nose mask electrical contacts 110 form an electrical connection with electrical contacts 13 of the first end 12 of the tool housing, thereby electrically connecting the nose mask 100 to a power source 18 via a controller 36. In this configuration, a portion of the spindle 10 is surrounded by the nose mask 100, and one end of the spindle 10 extends outward from the nose mask 24 to allow engagement between the spindle 10 and the fitting 14.

[0107] In the illustrated embodiment, power is supplied to a light source 50 disposed within a nose mask 100 via an electrical conductor 108, which is in turn electrically connected to a power tool circuit 20. The power supply 18 is activated by the aforementioned switch actuator 24. When the power supply is activated, the light source 50 illuminates the working area in front of the rotating power tool.

[0108] In the nasal mask 100, an electrical conductor 108 powers a plurality of independent light sources 50, which are contained within the nasal mask 100 and arranged to illuminate a workpiece. In the illustrated embodiment, the nasal mask 100 includes two light sources, such as light-emitting diodes (LEDs) 52, which emit light from the distal end 106 of the nasal mask. Other types of light sources 50 may be used instead of LEDs.

[0109] refer to Figures 6-8 As an alternative to multiple discrete light sources or point light sources, light source 50 can take the form of a ring-shaped light strip 150. The light strip 150 can be an illuminated, transparent ring structure and can be used on pet grooming accessories, where a nose mask 100 or a similarly constructed accessory provides a support surface 90 on which the pet's (e.g., a dog's) toes 92 can be placed while the pet's nails are trimmed using accessory 14. The light strip 150 is mounted to extend around the periphery of the support surface 90. By surrounding the nail with the light strip 150, the nail is illuminated. Under this illumination, the pet's nail becomes partially transparent, allowing the tool user to clearly see the internal structure of the nail during trimming. This illumination prevents the pet's nails from being over-trimmed.

[0110] refer to Figure 9 and 10 Another alternative lighting configuration that can be used in Annex 16 (e.g., nose mask 100) advantageously allows selection between two light modes. In the first mode, the light source 50 is configured to provide a conical light field, wherein the angle of the conical light field is wide, and the illumination area A1 at a predetermined distance D from the light source 50 is large ( Figure 9 In the first mode, the light intensity in the wide conical light field is moderate. For example, this wide conical light field can be used to illuminate large workpieces. In the second mode, the light source 50 is configured to provide a conical light field with a relatively narrow angle compared to the first mode, and a relatively small illumination area A2 at a predetermined distance D from the light source 50. In the second mode, the illumination field is focused, and the light intensity is enhanced relative to the first mode. Different modes can be achieved, for example, by using different light sources for different modes, or by using the same light source for each mode while using different lenses 54 to achieve the desired mode. In some embodiments, switching between modes can be achieved by pressing a button, while in other embodiments, switching is achieved by rotating the lens 54. Advantageously, the user can switch between a wide-angle LED and a focused LED to achieve optimal illumination for a given task.

[0111] refer to Figure 11 and Figure 12 In some embodiments, the nose mask 100 may include an indicator light source 250, such as an LED 52, which provides information to the user of the tool. Such an indicator light source 250 may be used alone or in combination with illumination sources 50, 150.

[0112] In some embodiments, the rotary power tool 1 may include a sensor 64 that detects overload conditions of the motor 6. For example, the PCBA 40 may include sensor 64 that detects motor current and outputs a signal corresponding to the detected current to the controller 36. The controller 36 compares the detected current with a predetermined current corresponding to the normal load state of the rotary power tool 1. If the detected current is at or below the predetermined current, the controller 36 controls the indicator light 250 to illuminate a green LED. Green indicates that the rotary power tool 1 is operating normally. If the detected current is greater than the predetermined current, the controller 36 controls the indicator light 250 to illuminate a red LED. The red LED indicates to the user that the rotary power tool 1 is operating in an overload state (e.g., in an abnormal state where the tool may become damaged). The indicator light 250 is positioned on the nose shield 100 to ensure that the user can easily monitor the tool's status while operating the tool. Figure 11 The diagram indicates that light source 250 is an independent LED 52, while Figure 12 The illustration indicates that the light source 250 is an axially elongated light band disposed on the outer peripheral surface of the nose mask 100. These examples are not limiting, and the light source can be disposed on the nose mask 100 in any color and configuration.

[0113] refer to Figure 13 In one alternative embodiment, the indicator light 350 is used in conjunction with a sensor 66, which detects the angle of the tool housing 2 in space. In some embodiments, the sensor 66 may detect the angle of the tool relative to the direction of gravity. In some embodiments, the sensor 66 may be an accelerometer, which is placed in the nose shield 100 or the tool housing 2. For example, the accelerometer 66 may be included in the PCBA 40. The accelerometer 66 outputs a signal corresponding to the detected tool angle to a controller 36. The controller 36 compares the detected angle with a predetermined angle. The predetermined angle may correspond to the optimal angle for using a given accessory 14 (e.g., a cutting wheel or grinding head). If the detected angle is within an acceptable angle range for a given application, the controller 36 controls the indicator light 350 to illuminate a green LED. Green indicates that the rotary power tool 1 is properly angled. If the detected angle is greater than the acceptable angle range, the controller 36 controls the indicator light 350 to illuminate a red LED. The red LED indicates that the user is operating the rotary power tool 1 at a suboptimal angle. The indicator light 350 is positioned on the nose shield 100 to ensure that the user can easily monitor the tool's status while operating the tool.

[0114] Although different colored light sources are used in this example, different types of lighting can be used to provide tool orientation feedback. For example, an accelerometer can be used in conjunction with the aforementioned light sources 50 and 150. When the accelerometer detects that the power tool is being used at an appropriate angle, light sources 50 and 150 can be turned on to provide working illumination; while when the accelerometer detects that the rotating power tool 1 is being used at an inappropriate angle, light sources 50 and 150 will be turned off and remain off (or flash intermittently) until the tool housing angle is adjusted to the appropriate angle.

[0115] refer to Figure 14 and Figure 15 In an alternative embodiment, the nose mask 400 is similar to the nose mask 100, and common elements are indicated using common reference numerals. However, Figure 13 The nasal mask 400 differs from the nasal mask 100 described above in that it includes a speed control switch 80 instead of light sources 50, 150, 250, and 350. That is, the speed control switch 80 is connected to the circuit 20 via an electrical conductor 108.

[0116] In the nasal mask 400, the speed control switch 80 is a push-button switch. The speed control switch 80 is electrically connected to the controller 36 via an electrical conductor 108, and when the controller 36 determines that the speed control switch 80 is closed, the controller 36 controls the motor 6 to provide a gradual increase in the output shaft speed. For example, in some embodiments, actuation of the speed control switch 80 results in an increase in speed of 5000 rpm. In some embodiments, the increased speed is maintained as long as the switch 80 is pressed; while in other embodiments, the speed increase is temporary and lasts for a predetermined period of time.

[0117] refer to Figure 16 Another alternative embodiment of the nose mask 500 and Figure 14 The nose mask 400 is similar, and common components are indicated using common reference numerals. However, Figure 16 500 nose mask and Figure 14 The difference with the nasal mask 400 is that the push-button speed control switch 80 is replaced by an integrated potentiometer speed control switch 180 (e.g., a rotary switch). The speed control switch 180 is electrically connected to the controller 36 via an electrical conductor 108, and when the controller 36 determines a change in the rotational orientation of the speed control switch 180, the controller 36 controls the motor 6 to provide a corresponding change in the output shaft speed.

[0118] In relation to Figures 14 to 16 In the disclosed embodiments, the placement of speed control switches 80, 180 in the nose mask allows the user to control the motor speed without having to change the position of their hand from the nose grip to the tool housing grip.

[0119] refer to Figure 17 Another alternative embodiment of the nose mask 600 and Figure 14 The nose mask 400 is similar, and common components are indicated using common reference numerals. However, Figure 17 600 nose mask and Figure 14 The difference in the nose mask 400 is that the push-button speed control switch 80 is replaced by a transceiver 290, which is wirelessly connected to the circuit 20, for example, using a radio frequency (RF) signal. In this embodiment, a wireless speed control switch 280 is disposed in a foot pedal accessory 230. The foot pedal accessory 230 includes a pedal 231 pivotally mounted to a base 232. The speed control switch 280 detects the angle of the pedal 231 relative to the base 232 and wirelessly transmits a signal corresponding to the detected angle to the transceiver 290 of the nose mask 600. The transceiver 290 receives the signal from the foot pedal sensor and wirelessly transmits it to the controller 36 via a receiver or transceiver provided in the PCBA 40. When the controller 36 determines a change in the angle of the speed control switch 280, the controller 36 controls the motor 6 to provide a corresponding change in the output shaft speed. Thus, by connecting the nose mask 600 to the rotary power tool 1, a wireless connection is automatically established with the foot pedal accessory 230, allowing the user to control the speed of the motor by pressing the pedal 231.

[0120] In some embodiments, the nose mask 400, 500, 600 of the alternative embodiments may optionally include a light source (such as...) in addition to the speed control features. Figure 17 (As shown).

[0121] refer to Figure 18 and Figure 19 Another alternative embodiment of the nose mask 700 and Figure 14 The nose mask 400 is similar, and common components are indicated using common reference numerals. However, Figure 18 and Figure 19 The nose mask 700 and Figure 14The difference with the nose mask 400 is that the push-button speed control switch 80 is replaced by a fluid delivery accessory 160, which is configured to drip fluid onto the workpiece during operation of the power tool. The fluid delivery accessory 160 may include a nose mask 700 that provides a detachable connection to the rotary power tool 1. Furthermore, the fluid delivery accessory 160 includes a reservoir 161 mounted on the nose mask 700, which stores a fluid such as water. The fluid delivery accessory includes a fluid line 162 connected at one end 163 to the reservoir 161. The opposite end 164 of the fluid line 162 is arranged to direct fluid from the reservoir 161 onto the workpiece or fitting 14. A fluid pump 166, an actuator 165 driving the fluid pump 166, and other auxiliary devices including appropriate valves (not shown) are disposed in the reservoir or the fluid line 162. In addition, PCBA 40 may include a sensor 64 that detects the current of the motor 6 of the rotary power tool 1 and outputs a signal corresponding to the detected current to a controller 36. The controller 36 compares the detected current with a predetermined current corresponding to the normal load conditions of the rotary power tool 1. If the detected current is at or above the predetermined current, the controller 36 controls the actuator 165 to drive the fluid pump 166 to deliver fluid to the water pipe 162. If the detected current is less than the predetermined current, the controller 36 controls the actuator 165 to stop the pump 166. A fluid delivery accessory 160 may deliver fluid to fittings 14 (e.g., diamond glass drill bits for drill bit casing, stone, glass, etc.) to keep the drill bit cool during tool operation. Since the fluid is delivered based on the load state of the rotary power tool 1, the fluid is only distributed during tool operation.

[0122] In some embodiments, the nasal mask 700 of the alternative embodiment may optionally include a light source 52 (e.g., in addition to the fluid delivery accessory 160) Figure 18 (As shown).

[0123] refer to Figure 20 Another exemplary accessory 16 is a drill drive accessory 200, which converts the rotary power tool 1 into a drill drive. The drill drive accessory 200 includes a drive housing 201. The proximal end 202 of the drive housing 201 includes a threaded opening with internal threads configured to engage with the external threads 15 of the protrusion 11. The drive housing 201 houses a gear set (not shown) configured to engage with and be driven by the spindle 10. This gear set converts the output speed of the motor 6 into a suitable drilling speed. Furthermore, the drive housing 201 supports a chuck 204 connected to the output of the gear set and configured to transmit the output of the gear set to the drill bit (not shown).

[0124] In some embodiments, the drill drive accessory 200 may omit the gear set and include features such as an identification resistor that is electrically connected to the tool housing electrical contacts 13. In this case, the controller 36 can determine that the accessory 200 is a drill drive based on the detected resistance and adjust the motor output speed to a suitable speed for the drill bit drive.

[0125] refer to Figures 21-22 Another exemplary accessory 16 is a workstation accessory 140, which holds the rotary power tool 1 in space and also converts the rotary power tool 1 into a stamping tool. Workstation accessory 140 includes a press assembly 141 configured to rest on a support surface (e.g., a workbench top). Press assembly 141 includes a base 142 resting on the support surface and a guide rail 143 extending from the base 142 in a direction perpendicular to the base 142. Press assembly 141 also includes a press housing 144 slidably mounted on the guide rail 143 and supporting the rotary power tool 1 spaced apart relative to the base 142. The press housing 144 includes: a guide rail mounting portion 145, which is connected to a guide rail 143, for example, via a clamping mechanism; a tool mounting portion 146 configured to receive and support a power tool housing 2; and a gear set (not shown) that movably connects the tool mounting portion 146 to the guide rail mounting portion 145 via a rod 147 mechanically connected to the gear set. Operation of the rod 147 drives the gears of the gear set, thereby adjusting the position (e.g., height) of the tool mounting portion 146 relative to the base 142. The rod 147 moves the tool mounting portion 146 between a first position, in which the tool mounting portion 146 is at a first distance from the base 142, and in a second position, in which the tool mounting portion is at a second distance from the base 142, wherein the second distance is closer to the base 142 than the first position.

[0126] The press assembly 142 includes an embedded electrical conductor 148 extending between a tool mount 146 and a handle 149 of a lever 147. One end of the conductor 148 is electrically connected to an electrical contact (not shown) disposed on the tool mount 146, which includes an internally threaded collar 146(1) that receives and engages with a protrusion 11. Thus, the tool mount 146 forms an electrical connection with the electrical contact 13 of the tool housing 2 in a manner similar to that of a nose mask 100, thereby connecting the tool mount 146 to a power source 18 via a controller 36. The opposite end of the conductor 148 terminates at the handle 149 of the lever 147. More specifically, the handle 149 includes speed control switches 80, 180, which are electrically connected to the controller 36 via the conductor 148. The controller 36 controls the speed of the motor based on output signals from the speed control switches 80, 180. Because the lever handle 149 includes integrated speed control switches 80, 180, the user has complete control over the tool speed without releasing the lever 147. In some embodiments, both speed control switches 80 and 180 and tool on / off switch 122 are disposed in handle 149. Figure 22 ).

[0127] refer to Figures 23 to 25 Another exemplary accessory 16 is a cutting guide accessory 130, which is attached to the first end 12 of the tool housing and allows the tool to cut while providing guidance on the cutting depth. The cutting guide accessory 130 includes a guide housing 131 having a hollow frustoconical shape. The guide housing 131 has a first end defining a collar portion 132 and an opposite end defining a guide surface 133. The diameter of the guide surface 133 is larger than the diameter of the collar portion 132. The collar portion 132 has an internal thread configured to engage with an external thread 15 of a protrusion 11 of the tool housing 2. The distance between the collar portion 132 and the guide surface 133 can be adjusted by a set screw 134. The guide housing 131 also includes an opening 135 that allows a user to view the internal space of the guide housing 133, particularly providing observation of the workpiece during cutting operations. In some embodiments, the opening 135 may be filled with a transparent material. In some embodiments, the transparent material may be configured to provide magnification.

[0128] The collar portion 132 includes a pair of embedded electrical conductors 138 extending between a proximal end 136 and a distal end 137 of the collar portion. One end of the electrical conductors 138 is electrically connected to an electrical contact 139 disposed on the proximal end 136 of the collar portion. The collar portion 132 is detachably attached to the first end 12 of the housing via threaded engagement between the external thread 15 of the protrusion and the internal thread of the collar. When the collar portion 132 is attached to the first end 12 of the tool housing, the electrical contacts of the collar portion form an electrical connection with the electrical contacts 13 of the first end 12 of the tool housing, thereby electrically connecting the collar portion 132 to the power supply 18 via the controller 36. In this configuration, a portion of the spindle 10 is surrounded by the collar portion 132, and one end of the spindle 10 extends outward from the collar portion toward the guide surface 133 to allow engagement between the spindle 10 and the fitting 14.

[0129] In the illustrated embodiment, power is supplied via an electrical conductor 138 to light sources 50, 150, 250, and 350 located at the distal end 137 of the collar portion. The electrical conductor 138 is also electrically connected to the power tool circuit 20. When the power supply 18 is turned on, the light sources 50, 150, 250, and 350 illuminate the working area in front of the rotating power tool 1.

[0130] refer to Figures 26 to 28Another exemplary accessory 16 is a plunger engraving machine accessory 150 that converts the rotary power tool 1 into a compact plunger engraving machine. The plunger engraving machine accessory 150 includes a base 151 and first and second guide rails 152, 153 fixed to the base 151 and extending from the base 151 in a direction perpendicular to the base 151. The plunger engraving machine accessory 150 includes a plunger housing 154, which is a hollow, generally cylindrical structure supported above the base 151 by the first and second guide rails 152, 153. The plunger housing 154 supports the rotary power tool 1 in a spaced-apart relationship relative to the base 151. The plunger-type housing 154 includes a first guide rail mounting portion 154(1) adjustablely connected to a first guide rail 152, a second guide rail mounting portion 154(2) adjustablely connected to a second guide rail 153, and a tool mounting portion 154(3) disposed between the first guide rail mounting portion 154(1) and the second guide rail mounting portion 154(2) and connecting the first guide rail mounting portion 154(1) to the second guide rail mounting portion 154(2). The tool mounting portion 154(3) is suspended between the first and second guide rail mounting portions 154(1) and 154(2). The tool mounting portion 154(3) includes a collar portion 154(4) configured to surround and support a power tool. More specifically, the collar portion 154(4) has an internal thread (not shown) configured to engage with the external thread 15 of the protrusion 11 of the tool housing 2. The distance between the collar portion 154(4) and the base 151 can be adjusted by, for example, a set screw (not shown) provided in each of the first and second guide rail mounting portions 154(1), 154(2).

[0131] The first guide rail mounting portion 154(1) includes a first handle 155 that protrudes from the outer surface of the first guide rail mounting portion 154(1) on the side opposite to the tool mounting portion 154(3). Similarly, the second guide rail mounting portion 154(2) includes a second handle 156 that protrudes from the outer surface of the second guide rail mounting portion 154(2) on the side opposite to the tool mounting portion 154(3). Each of the first handle 155 and the second handle 156 includes an embedded electrical conductor 158 that extends between the proximal end of each respective handle and the collar portion 154(4). One end of the electrical conductor 158 is electrically connected to an electrical contact (not shown) disposed on the proximal end of the collar portion. Therefore, in this embodiment, the collar portion 154(4) includes four electrical contacts. The collar portion 154(4) is detachably attached to the first end 12 of the tool housing via threaded engagement between the external thread 15 of the protrusion and the internal thread of the collar. When the collar portion 154(4) is attached to the first end 12 of the tool housing, the electrical contacts of the collar portion form an electrical connection with the corresponding contacts of the four electrical contacts 13 provided on the first end 12 of the tool housing, thereby connecting the collar portion 132 to the power supply 18 via the controller 36. As in the aforementioned embodiments where the collar portion is included, a portion of the spindle 10 is surrounded by the collar portion 154(4), and one end of the spindle 10 extends outward from the collar portion 154(4) toward the base 151 to allow engagement between the spindle 10 and the fitting 14.

[0132] In the illustrated embodiment, the first handle 155 includes a speed selection device 180, such as a rotary switch or a slide switch, which provides an output signal corresponding to the angular position of the rotary switch (or the longitudinal position of the slide switch). The controller 36 adjusts the speed of the motor 6 according to the output signal from the speed selection device 180. Furthermore, the second handle 156 includes an on / off switch 122 configured to control the on / off state of the rotary power tool 1 mounted in the collar portion 154 (4).

[0133] Because the plunger engraving machine accessory 150 includes an integrated switch in each of the first and second handles 155, 156, the user can have complete control over the tool speed and on / off function while firmly holding the rotary power tool 1.

[0134] The speed selection device 180 and the on / off switch 122 are electrically connected to electrical contacts located on the proximal end of the collar portion.

[0135] Figure 27 An alternative embodiment of the first handle 155' is shown, wherein the trigger switch 180' provides a speed selection device 180.

[0136] refer to Figures 29 to 32Another exemplary accessory 16 is a fine-grained grip accessory 220, which is attached to the first end 12 of the rotary power tool and provides a supplementary grip that is ergonomically designed to reduce fatigue, especially when using the rotary power tool 1 for detailed work. The fine-grained grip accessory 220 includes a mounting portion 221 configured to be detachably attached to the tool housing 2, and an auxiliary handle 222 protruding from the mounting portion 221.

[0137] Mounting portion 221 includes a collar portion 223 configured to surround and support the first end 12 of the power tool. More specifically, the collar portion 223 has an internal thread (not shown) configured to engage with the external thread 15 of the protrusion 11 of the tool housing 2. An auxiliary handle 222 extends integrally from mounting portion 221 at an acute angle relative to the centerline 223(1) of the collar portion 223. The shape of the auxiliary handle 222 differs from that of the handle 4 provided by the tool housing 2. Furthermore, when the power tool 1 is attached to mounting portion 221, the orientation of the auxiliary handle 222 relative to the spindle rotation axis 9 differs from that of the handle 4 provided by the tool housing 2.

[0138] The fine-grained grip attachment 220 includes a folding magnifying device 224. The magnifying device 224 includes a frame 225 having an elongated arm 225(1) pivotally connected at one end to the outer surface of a mounting portion 221 via a pin 226. The frame 225 also includes an annular edge 225(2) integrally projecting from the other end of the arm 225(1). The magnifying device 224 includes a magnifying lens 224(1) received and supported by the inner surface of the edge 225(2). The magnifying device 224 pivots relative to the mounting portion 221 between a stored (e.g., folded and stowed) position and an operating position, in which the frame 225 is side-by-side with an auxiliary handle 222. Figure 29 ), and in the operating position, the arm portion 225(1) and the edge portion 225(2) are spaced apart from the auxiliary handle 222 and the collar portion 223. Figure 31 It also provides users with a magnified view of the workpiece.

[0139] In some embodiments, the edge portion includes light sources 50, 150, 250, and 350, such as LED 52, spaced apart along the edge portion 225(2) to illuminate the workpiece. The light sources 50, 150, 250, and 350 are powered by an electrical conductor 258(1) extending between the edge portion 225(2) of the amplification device and a corresponding electrical contact disposed near the end of the collar portion 223.

[0140] In some embodiments, the auxiliary handle 222 includes speed selection devices 80, 180 and / or on / off switch 122, which are electrically connected to the controller 36 via an electrical conductor 258 (2) extending between the speed selection devices 180 and / or on / off switch 122 and corresponding electrical contacts disposed near the end of the collar portion 223.

[0141] In some embodiments, the auxiliary handle 222 includes an internal cavity 227 and an opening 229 that communicates the internal cavity 227 with the environment of the sewing machine's grip attachment 220. The opening 229 opens toward the workpiece. Furthermore, the sewing machine's grip attachment 220 includes a blower 228 disposed within the cavity 227. Figure 32 The blower 228 includes a fan motor 228(1) electrically connected to a power supply 18 and a fan 228(2) driven to rotate by the fan motor 228(1), the fan 228(2) being configured to exhaust air from the cavity 227 through an opening 229. The fan motor 228(1) is powered by an electrical conductor 258(3) extending between the blower 228 and a corresponding electrical contact located near the end of the collar portion 223. The blower 228, integrated into the auxiliary handle 222, blows away dust and debris that accumulates on the workpiece during the cutting operation, thereby improving visibility for the user.

[0142] In some embodiments, at least two or more combinations of light sources 50, 150, 250, 350, speed selection devices 80, 180, on / off switch 122, and blower 228 are provided in the same embodiment.

[0143] The ends of electrical conductors 258(1), 258(2), and 258(3) terminate at corresponding electrical contacts (not shown) provided on the proximal end of the collar portion, which are configured to engage with corresponding electrical contacts 13 of the tool housing 2. When the tool's grip attachment 220 is connected to the rotary power tool 1, the controller 36 controls the speed of the motor 6 according to the output signals from the speed selection devices 80 and 180.

[0144] In some embodiments, the blower 228 is not driven by a fan motor powered by the power supply 18. Instead, the fan of the blower 228 is driven by the output shaft 8 of the motor 6.

[0145] refer to Figure 33A -C and Figure 34 Another exemplary accessory 16 is a flexible shaft accessory 120, which is attached to the first end 12 of the rotary power tool and provides enhanced tool mobility and comfort when operating the rotary power tool 1.

[0146] The flexible shaft accessory 120 includes a flexible shaft body 121 having a proximal end 127 connected to the rotary power tool 1 and a distal end 123 opposite to the proximal end 127. The flexible shaft accessory 120 includes a handheld part 124 disposed at the distal end 123 of the flexible shaft body. The handheld part 124 is ergonomically designed for use by a user, allowing for precise control during operation.

[0147] A rotary transmission line 125 is coaxially disposed within the flexible shaft body 121. The rotary transmission line 125 extends from the proximal end 127 to the distal end 123 of the body and connects to the output shaft 8 of the motor 6, thereby allowing the rotary transmission line 125 to rotate relative to the flexible shaft body 121. A handheld component 124 supports the distal end of the rotary transmission line, and when the handheld component 124 is held by a user, the distal end of the rotary transmission line is configured to be detachably connected to the accessory 14. With this structure, the rotary transmission line 125 is configured to transmit the rotational output of the motor output shaft 8 to the accessory 14.

[0148] In some embodiments, the handheld component 124 includes speed selection devices 80, 180, which are electrically connected to the controller 36 in the same manner as in the foregoing embodiments, for example, through electrical conductors (not shown) within the handheld component 124 and the flexible shaft body 121. The controller 36 controls the speed of the motor 6 based on output signals from the speed selection devices 80, 180. The speed selection devices 80, 180 may be push-button switches, such as single-press switches providing a brief burst of speed, or up-and-down toggle switches, or alternatively, rotary or sliding switches that allow the user to increase or decrease the motor speed. In some embodiments, the speed selection devices 80, 180 may include multiple buttons or switches.

[0149] In some embodiments, in addition to speed selection devices 80, 180, handheld device 124 also includes an on / off switch 122, which is electrically connected to controller 36 and configured to control the power supply to motor 6.

[0150] In some embodiments, the speed selection devices 80, 180 and / or the on / off switch 122 are configured to communicate wirelessly with the controller 36, and the controller 36 controls the speed of the motor 6 based on the wireless signals received from the speed selection devices 80, 180.

[0151] In some embodiments, the handpiece 124 of the flexible shaft accessory 120 includes integrated light control that controls the light sources 50, 150 to enhance visibility during flexible shaft operation. In the illustrated embodiment, electrical conductors within the handpiece 124 and the flexible shaft body 121 power the light source 50 in the form of an annular light strip 150. The light strip 150 may be an illuminated annular transparent structure. The light strip 150 is mounted to extend around the periphery of the distal end of the transmission line and direct light forward toward the workpiece. In other embodiments, the light sources 50, 150 may take the form of multiple independent light sources 50 (not shown) contained in the nose of the handpiece 124 (1) and arranged to illuminate the workpiece. In still other embodiments, the nose 124 (1) includes two or more light sources, such as light-emitting diodes (LEDs) 52 (not shown), which emit light from the nose 124 (1). Other types of light sources 50 may be used instead of LEDs.

[0152] Light control may include a light on / off switch 126 and a dimming control switch 128, allowing the user to adjust the brightness of light sources 50 and 150 as needed. The light on / off switch 126 is conveniently located on the handheld component 124, allowing the user to easily turn the light sources on and off without interrupting their operation. The light on / off switch 126 is electrically connected to a controller 36 within the tool housing, which manages the power supply to the light sources. The dimming control switch 128 may be implemented, for example, as a rotary dial or a slide switch. Alternatively, the dimming control switch 128 may be incorporated into the light on / off switch 126 and activated by repeatedly pressing the light on / off switch 126. The dimming control switch 128 allows the user to adjust the brightness of light sources 50 and 150. The dimming control switch 128 is electrically connected to the controller 36, which adjusts the power supplied to light sources 50 and 150 based on user input.

[0153] refer to Figure 35Another exemplary accessory 16 is a tool stabilizer accessory 240, which is attached to the first end 12 of a rotary power tool and provides increased tool stability and user control over the accessory 14. The tool stabilizer accessory 240 includes a generally tapered stabilizer housing 241 that surrounds the spindle 11 and covers a portion of the first end 12 of the tool housing. The stabilizer housing 241 includes an accessory mounting base 242 supported on an inner surface of the stabilizer housing. The accessory mounting base 242 is configured to detachably connect the stabilizer housing 241 to the tool housing 2. For example, the accessory mounting base 242 may include a collar 243 with internal threads (not shown) configured to engage with external threads 15 of a protrusion 11 of the tool housing 2. In some embodiments, the collar 243 is omitted, and the stabilizer housing 141 is connected to a nose shield 100. Furthermore, the tool stabilizer accessory 240 includes a gyroscope or flywheel 244 disposed within the stabilizer housing 241 and surrounding the first end 12 of the tool housing. The flywheel 244 is generally conical, and its axis of rotation 244(1) is coaxial with the axis of rotation 9 of the spindle 11. The flywheel 244 is connected to the spindle 11 via a speed multiplier 245. The speed multiplier 245 is axially outward relative to the collar 243. The outer surface of the speed multiplier 245 is connected to the inner surface of the flywheel, and the inner surface of the speed multiplier 245 is connected to the spindle 11, thereby causing the flywheel 244 to rotate at a speed greater than that of the motor output shaft 8. The high rotational speed of the flywheel 244 provides a reaction force to resist any forces from the cutting process, thus producing very stable tool operating conditions.

[0154] refer to Figure 36 Another exemplary accessory 16 is a pipe cutting accessory 250, which is attached to the first end 12 of a rotary power tool and supports and rotates the pipe 3 during pipe cutting operations, thereby simplifying the cutting process and providing precise cuts. The pipe cutting accessory 250 includes an accessory housing 251 having an internal accessory mounting base 252 configured to be detachably connected to the tool housing 2. For example, the accessory mounting base 252 may include a collar 253 having internal threads (not shown) configured to engage with external threads 15 of a protrusion 11 of the tool housing 2. In some embodiments, the collar 253 is omitted, and the accessory housing 251 is connected to the nose shield 100. The accessory housing 251 surrounds at least a portion of the first end 12 of the tool housing. The accessory housing 251 includes rollers 253 pivotally mounted within the accessory housing 251 to extend from an opening in the housing. The rollers 253 are arranged such that the axis of rotation of each roller is parallel to the axis of rotation of the spindle 11. In addition, these rollers 253 are spaced apart around the circumference of the first end 12 of the tool housing.

[0155] In some embodiments, roller 253 rotates freely and is therefore passively operated as a conveying roller. With this configuration, roller 253 supports the pipe only when the rotary power tool 1 is operated to cut the pipe. In other embodiments, roller 253 is actively rotated by a motor (not shown), thereby rotating the pipe as it is cut by the rotary power tool 1.

[0156] In an embodiment where the accessory housing 251 is connected to the nose mask 100, the speed control switch 80 can be connected to the circuit 20 via an electrical conductor 108. As in the previous embodiments, the speed control switch 80 can be a push-button switch 80 or a rotary switch 180.

[0157] refer to Figure 37 and Figure 38 Another exemplary accessory 16 is a jigsaw cutting accessory 450, which is detachably connected to the first end 12 of the rotary power tool. The jigsaw cutting accessory 450 is designed to convert the rotary power tool 1 into a jigsaw, providing the ability to perform complex cuts in a variety of materials. The jigsaw cutting accessory 450 improves cutting accuracy and visibility due to its integrated lighting and laser features.

[0158] The jigsaw cutting attachment 450 includes an attachment housing 451 having an attachment mount configured to be detachably connected to a tool housing 2. For example, the attachment mount may include a cover 453 surrounding at least a portion of the first end 12 of the tool housing. The cover 453 may have internal threads (not shown) configured to engage with external threads 15 of a protrusion 11 of the tool housing 2. Alternatively, the cover 453 may include an inner collar for receiving a nose shield 100.

[0159] Accessory housing 451 houses a jigsaw blade connector (not shown) and a gear set (not shown) configured to convert the rotary output of tool 1 into a reciprocating output suitable for driving jigsaw blade 452. The jigsaw blade connector is configured to connect the jigsaw blade to the output end of the gear set. In the illustrated embodiment, the jigsaw blade 452 extends from housing 453 and moves along an axis perpendicular to the spindle rotation axis 9.

[0160] The jigsaw cutting attachment 450 includes integrated lighting and laser features that improve cutting accuracy and visibility. In the illustrated embodiment, the jigsaw cutting attachment 450 includes light sources 50, 150 (e.g., LEDs) located at the front of the attachment housing 451 and arranged to illuminate the cutting area. The light sources 50, 150 are powered by the tool power supply 18 and controlled by an on / off switch 454 located on the jigsaw attachment housing 451. The switch 454 is electrically connected to a controller 36, allowing the user to easily turn the light sources 50, 150 on and off.

[0161] The jigsaw cutting attachment 450 also includes a laser guide 460 that projects a linear laser beam onto the workpiece to indicate the cutting path. The laser guide 460 is powered by the tool power supply 18 and controlled by a separate on / off switch 455 on the jigsaw attachment housing. The switch 455 is electrically connected to the controller 36, allowing the user to enable or disable the laser guide 460 as needed.

[0162] In an embodiment where the accessory housing 451 is connected to the nose mask 100, the speed control switch 80 can be connected to the circuit 20 via an electrical conductor 108. As in the previous embodiments, the speed control switch 80 can be a push-button switch 80 or a rotary switch 180.

[0163] refer to Figure 39 and Figure 40 Another exemplary accessory 16 is a circular saw cutting accessory 550, which is detachably connected to the first end 12 of the rotary power tool. The circular saw cutting accessory 550 is designed to convert the rotary power tool 1 into a circular saw, thereby providing the ability to make precise cuts in a variety of materials. The circular saw cutting accessory 550 improves cutting accuracy and visibility due to integrated lighting and laser features.

[0164] The circular saw cutting attachment 450 includes an attachment housing 551 having an attachment mount configured to be detachably connected to the tool housing 2. For example, the attachment mount may include a cover 553 surrounding at least a portion of the first end 12 of the tool housing. The cover 553 may have internal threads (not shown) configured to engage with external threads 15 of the protrusion 11 of the tool housing 2. Alternatively, the cover 553 may include an inner collar for receiving a nose shield 100.

[0165] Accessory housing 551 houses a circular saw blade connector (not shown) and a gear set (not shown) configured to convert the rotary output of tool 1 into a rotary output suitable for driving the circular saw blade 552. The circular saw blade connector is configured to connect the circular saw blade 552 to the output end of the gear set. In the illustrated embodiment, the circular saw blade 552 rotates about an axis perpendicular to and offset from the spindle rotation axis 9.

[0166] The circular saw cutting attachment 550 includes integrated lighting and laser features that improve cutting accuracy and visibility. In the illustrated embodiment, the circular saw cutting attachment 550 includes light sources 50, 150 (e.g., LEDs) located at the front of the attachment housing 551 and arranged to illuminate the cutting area. The light sources 50, 150 are powered by the tool power supply 18 and controlled by an on / off switch 554 located on the circular saw attachment housing 551. The switch 554 is electrically connected to a controller 36, allowing the user to easily turn the light sources 50, 150 on and off.

[0167] The circular saw cutting attachment 550 also includes a laser guide 560, which projects a linear laser beam onto the workpiece to indicate the cutting path. The laser guide 560 is powered by the tool power supply 18 and controlled by a separate on / off switch 555 on the circular saw attachment housing 551. The switch 555 is electrically connected to a controller 36, allowing the user to enable or disable the laser guide 560 as needed.

[0168] In an embodiment where the accessory housing 551 is connected to the nose mask 100, the speed control switch 80 can be connected to the circuit 20 via an electrical conductor 108. As in the previous embodiments, the speed control switch 80 can be a push-button switch 80 or a rotary switch 180.

[0169] The foregoing description details optional illustrative embodiments of a rotary power tool assembly including enhanced attachments. Only structures deemed necessary for illustrating the attachments are described herein. Other conventional structures, as well as the structures of auxiliary and accessory components of the rotary power tool and attachments, are considered to be known and understood by those skilled in the art. Furthermore, while working examples of rotary power tool assemblies including enhanced attachments have been described above, the assembly is not limited to the above working examples and various design changes can be made without departing from the assembly and attachments described in the claims.

Claims

1. A handheld rotary power tool assembly, comprising: Handheld rotary power tools, including power supply, Tool casing, A motor housed in the tool housing, the motor including a motor output shaft configured to be mechanically connected to the fitting; and A controller housed within the tool housing, configured to control the speed of the motor; and An accessory configured to be attached to a tool housing, the accessory being configured to be at least one of the following: Electrically connected to the controller, Electrically connected to the power supply, and It is mechanically connected to the motor output shaft.

2. The handheld rotary power tool assembly according to claim 1, including accessories.

3. The handheld rotary power tool assembly according to claim 1, wherein... This accessory is a flexible shaft accessory, which includes... A shaft body having a first end detachably connected to a tool housing and a second end opposite the first end, the second end including a handpiece configured to be held in a user's hand; and An internal rotary transmission line has a proximal end connected to the main shaft and a distal end supported on a handheld component. The rotary transmission line transmits the rotational output of the motor output shaft to its distal end, which is configured to connect to an accessory. The handheld device includes a speed selection device. The speed selection device is electrically connected to the controller, and The controller controls the motor speed based on the output signal from the speed selection device.

4. The handheld rotary power tool assembly according to claim 3, wherein... The output signal includes either a first output signal or a second output signal. The speed selection device is a push-button switch, configured such that when the push-button switch is not activated, a first output signal is sent to the controller, and based on the first output signal, the controller maintains the current speed of the motor; and when the push-button switch is activated, a second output signal is sent to the controller, and the controller increases the speed of the motor by a predetermined amount.

5. The handheld rotary power tool assembly according to claim 3, wherein... The speed selection device is a rotary switch, the output signal corresponds to the angular position of the rotary switch, and the controller adjusts the motor speed according to the output signal.

6. The handheld rotary power tool assembly according to claim 3, wherein... The handheld device includes an on / off switch electrically connected to the controller and is configured to control the power supply to the motor.

7. The handheld rotary power tool assembly according to claim 1, wherein... The accessory is a flexible shaft accessory, comprising a shaft body having a first end detachably connected to a motor output shaft and a second end opposite the first end. The second end includes a handheld component configured to be detachably connected to the accessory and held in the user's hand. The flexible shaft accessory is configured to transmit rotational output from the motor output shaft to the accessory. The handheld device includes a speed selection device, and The speed selector is configured to communicate wirelessly with the controller, and the controller controls the motor speed based on the wireless signals received from the speed selector.

8. The handheld rotary power tool assembly according to claim 7, wherein... The wireless signal includes a first wireless signal or a second wireless signal. The speed selection device is a push-button switch, configured such that when the push-button switch is not activated, a first wireless signal is sent to the controller, and the controller maintains the current speed of the motor based on the first wireless signal; and when the push-button switch is activated, a second wireless signal is sent to the controller, and the controller increases the speed of the motor by a predetermined amount.

9. The handheld rotary power tool assembly according to claim 7, wherein... The speed selection device is a rotary switch, the wireless signal corresponds to the angular position of the rotary switch, and the controller adjusts the motor speed according to the wireless signal.

10. The handheld rotary power tool assembly of claim 7, wherein... The handheld device includes an on / off switch that is wirelessly connected to the controller and configured to control the power supply to the motor.

11. The handheld rotary power tool assembly of claim 1, wherein... This accessory is a cutting guide that is detachably attached to the tool housing, and The cutting guide is electrically connected to the tool housing in such a way that power from the power source is supplied to the light source supported on the cutting guide.

12. The handheld rotary power tool assembly of claim 11, wherein... The light source includes LEDs arranged to direct illumination directly onto the workpiece.

13. The handheld rotary power tool assembly of claim 11, wherein... The cutting guide includes a guide housing that defines a window opening configured to allow observation of the workpiece through the guide housing. The window openings were filled with enlarged material.

14. The handheld rotary power tool assembly of claim 1, wherein... This accessory is a plunger-type engraving machine accessory, which includes a base, a first guide rail and a second guide rail fixed to and extending from the base, and a plunger-type housing supported above the base by the first and second guide rails. The plunger-type housing supports the power tool in a spaced-out relationship relative to the base. The plunger-type housing includes: First guide rail mounting part, which is connected to the first guide rail; second guide rail mounting part, which is connected to the second guide rail; And a tool mounting section disposed between the first guide rail mounting section and the second guide rail mounting section and connecting the first guide rail mounting section to the second guide rail mounting section, the tool mounting section being configured to receive and support the power tool housing. The tool mounting section includes a collar configured to surround and support the power tool. The first guide rail mounting part includes a first handle protruding from the outer surface of the first guide rail mounting part. The second guide rail mounting part includes a second handle protruding from the outer surface of the second guide rail mounting part. One of the first and second handlebars includes a speed selection device, and The speed selector is electrically connected to the controller, and the controller controls the speed of the motor according to the output signal from the speed selector.

15. The handheld rotary power tool assembly of claim 14, wherein... The other of the first and second handles includes an on / off switch configured to control the on / off mode of the power tool.

16. The handheld rotary power tool assembly of claim 1, wherein... The accessory is a nose mask, which is detachably attached to the tool housing so as to surround the motor output shaft, and The nose mask is electrically connected to the tool housing in such a way that power from the power source is supplied to the light source supported on the nose mask.

17. The handheld rotary power tool assembly of claim 16, wherein... The nasal mask includes a sensor electrically connected to a controller in such a way that the sensor receives power from the controller, and The controller receives output signals from the sensors and is configured to control the light source based on the output signals.

18. The handheld rotary power tool assembly of claim 1, wherein... The accessory is a nose mask, which is detachably attached to the tool housing so as to surround the motor output shaft. The nasal mask includes a speed selection device, and The speed selector is electrically connected to the controller, and the controller controls the motor speed according to the output signal from the speed selector.

19. The handheld rotary power tool assembly of claim 1, wherein... The tool housing includes the main handle, The accessory is a sewing tool grip accessory, which includes an accessory mount configured to be detachably attached to the tool housing and an auxiliary handle, the auxiliary handle having a different shape or orientation than the main handle. The auxiliary handle includes a speed selection device, and The speed selector is electrically connected to the controller, and the controller controls the motor speed according to the output signal from the speed selector.

20. The handheld rotary power tool assembly of claim 1, wherein... The accessory is a foot pedal accessory that is wirelessly connected to the controller. The foot pedal accessory includes a base, a pedal pivotally connected to the base, and a sensor configured to detect the angle of the pedal relative to the base and wirelessly provide an output signal to the controller corresponding to the detected angle. The controller controls the speed of the motor based on the output signal from the foot pedal accessory.

21. The handheld rotary power tool assembly according to claim 1, wherein... This attachment is a saw attachment, which includes... Accessory housing, configured to be detachably attached to the tool housing and surround a portion of the tool housing's circumference. A cutting accessory connector and a gear set disposed within an accessory housing, the gear set being configured to transmit the rotational output of the motor to a gear set rotational output suitable for driving the cutting accessory connected to the cutting accessory connector, the gear set being connected to the cutting accessory connector and transmitting the gear set rotational output to the cutting accessory connector, and At least one of a light control switch and a speed control switch is disposed in the accessory housing, and at least one of the light control switch and the speed control switch is electrically connected to the controller. in, The controller controls the motor speed based on the output signal from the speed control switch and controls the light source based on the output signal from the light control switch.

22. The handheld rotary power tool assembly of claim 1, wherein... This accessory is a press assembly configured to rest on a support surface. The press assembly includes a base placed on a support surface, guide rails extending from the base, and a press housing that supports the power tool relative to the base in a spaced-apart relationship. The press housing includes a guide rail mounting section connected to a guide rail, a tool mounting section configured to receive and support the power tool housing, a gear set movably connected to the guide rail mounting section, and a rod mechanically connected to the gear set. The lever is operated to adjust the position of the tool mounting part relative to the base between a first position and a second position. In the first position, the tool mounting part is a first distance from the base, and in the second position, the tool mounting part is a second distance from the base. The lever includes a speed selection device, and The speed selector is electrically connected to the controller, and the controller controls the speed of the motor according to the output signal from the speed selector.

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