A power tool

Abstract

A power tool for collecting dust and debris includes a telescopic tube, a first stop unit that moves with the telescopic tube, and a plurality of receiving portions distributed along the length of the telescopic tube. The first stop unit is provided with a driving member, and the driving member has a locking portion that can enter and disengage from the receiving portions. After the locking portion disengages from the receiving portion, the first stop unit can move relative to the telescopic tube along the length of the telescopic tube. When the locking portion enters the receiving portion, the movement of the first stop unit relative to the telescopic tube along the length of the telescopic tube is blocked. When the driving member moves relative to the telescopic tube in a first direction, it causes the locking portion to disengage from the receiving portion in the first direction. In this invention, when the driving member moves relative to the telescopic tube in the first direction, it causes the locking portion to disengage from the receiving portion in the first direction. The direction in which the driving member unlocks is consistent with the direction in which the locking portion disengages from the receiving portion, making the unlocking design of this invention simpler.

Description

[Technical Field]

[0001] This invention relates to a power tool. [Background Technology]

[0002] EP3222386A discloses a power tool kit, including a power tool and an auxiliary handle assembly. The power tool is a portable vacuum cleaner. The power tool includes a motor that provides power for sucking up dust, debris, and other waste, a telescopic tube, a first stop unit that moves with the telescopic tube, and several receiving portions (holes) distributed along the length of the telescopic tube. The first stop unit includes an actuator, a pin that can enter and disengage from the receiving portion, and a spring that drives the pin to move laterally to disengage from the receiving portion. When unlocking, pressing the actuator moves it downward, and the spring drives the pin to move laterally, so that one end of the pin enters the concave profile of the actuator, and the other end of the pin, which was originally located in the receiving portion, disengages from the receiving portion, thereby unlocking the first stop unit relative to the telescopic tube. Then, the operator can push the first stop unit to move relative to the telescopic tube along the length of the telescopic tube. However, such an unlocking design has a complex linkage structure, and is difficult and costly to manufacture and assemble. [Summary of the Invention]

[0003] This invention provides a power tool with a simple telescopic tube stop mechanism unlocking design.

[0004] The present invention adopts the following technical solution: a power tool that can pick up dust and debris, including a telescopic tube, a first stop unit that can move with the telescopic tube, and a plurality of receiving parts distributed along the length direction of the telescopic tube. The first stop unit is provided with a driving member, and the driving member is provided with a locking part that can enter and exit the receiving part. After the locking part exits the receiving part, the first stop unit can move relative to the telescopic tube along the length direction of the telescopic tube. When the locking part enters the receiving part, the movement of the first stop unit relative to the telescopic tube along the length direction of the telescopic tube is blocked. When the driving member moves relative to the telescopic tube along a first direction, it drives the locking part to exit the receiving part along the first direction.

[0005] Existing technologies require longitudinal movement of the driving component and lateral disengagement of the bolt (corresponding to the locking part) during the unlocking process, which is relatively complex. In this case, when the driving component moves relative to the telescopic tube along the first direction, it drives the locking part to disengage from the receiving part along the first direction. The direction in which the driving component unlocks is consistent with the direction in which the locking part disengages from the receiving part. The unlocking design of this case is simpler.

[0006] Furthermore, the first direction is perpendicular to the length direction of the telescopic tube.

[0007] Furthermore, the driving component also includes a main body and a button, the button being located at one end of opposite ends of the main body in a first direction, and a locking part being located on the side of the main body facing the telescopic tube and extending from the main body toward the telescopic tube.

[0008] Furthermore, the main body, button, and locking parts are integrally formed, with the locking part extending from the main body along a second direction perpendicular to the telescopic tube, the second direction being perpendicular to the first direction.

[0009] Furthermore, the telescopic tube is provided with a guide rail extending in its length direction, and the first stop unit also includes a slider that slides along the guide rail when moving. The drive member is assembled to the slider, and the drive member also includes a first guide portion located on the side of the drive member opposite to the telescopic tube. The slider is provided with a second guide portion. One of the first guide portion and the second guide portion is a guide groove, and the other of the first guide portion and the second guide portion is a guide rib that can slide along the guide groove.

[0010] Furthermore, the first guide portion and the second guide portion extend along the first direction, the first guide portion being a guide groove and the second guide portion being a guide rib.

[0011] Furthermore, the telescopic tube is in the front-to-back direction in the length direction. The first stop unit also includes a sliding member and a return spring for driving the drive member to reset. The drive member also includes a button part, a first stop part, and a second stop part. The button part and the return spring are located on opposite sides of the drive member in the first direction. The first stop part and the second stop part are located on the front and back sides of the drive member. The sliding member includes a first side plate and a second side plate that are opposite each other in front and back, a third side plate that connects the first side plate and the second side plate, a first eaves part connected to the first side plate for stopping the first stop part, and a second eaves part connected to the second side plate for stopping the first stop part. The first stop part is located between the first eaves part and the third side plate, and the second stop part is located between the second eaves part and the third side plate. The return spring presses against the third side plate, and the main body part is located between the first side plate and the second side plate.

[0012] Furthermore, the return spring presses against the third side plate in the first direction, the first stop presses against the first eaves in the opposite direction, and the second stop presses against the second eaves in the opposite direction.

[0013] The power tool also includes a rack held on a telescopic tube, the rack comprising a plurality of teeth distributed along the length of the telescopic tube, the grooves between adjacent teeth forming the receiving portion.

[0014] Furthermore, the locking part is located on the side of the drive member facing the rack, and the locking part is a protrusion that protrudes toward the telescopic tube.

[0015] Furthermore, the telescopic tube is provided with an upper guide rail and a lower guide rail extending in its length direction respectively. After the locking part disengages from the tooth groove, the first stop unit can move along the upper guide rail and the lower guide rail. The rack is limited between the upper guide rail and the lower guide rail. The lower side of the upper guide rail is recessed upward with an upper long groove extending in the length direction of the telescopic tube. The upper side of the lower guide rail is recessed downward with a lower long groove extending in the length direction of the telescopic tube. The upper edge of the rack is accommodated in the upper long groove, and the lower edge of the rack is accommodated in the lower long groove.

[0016] Furthermore, the power tool also includes a body, a second stop unit, and a motor located within the body. The second stop unit includes a first part disposed on the body that cannot move with the telescopic tube, and a second part disposed on the telescopic tube that can move with the telescopic tube. The first part includes a button with an extension rod and a second spring that drives the button to reset. The second spring is sleeved on the extension rod. The second part includes a second drive member, a second slider, and a second reset spring. The second slider is held on the upper and lower guide rails. When the button is pressed along the first direction, the end of the extension rod pushes the second drive member to move along the first direction, causing the second locking part of the second drive member to disengage from the tooth groove along the first direction, and the end of the extension rod to insert into the second slider along the first direction.

[0017] Furthermore, the rack includes a rack body, an elongated section parallel to the rack body, and a first connecting portion and a second connecting portion respectively connecting the rack body and the elongated section. The rack body and the elongated section extend along the length direction of the telescopic tube. The teeth and tooth grooves are part of the rack body and are located on the side of the rack body facing the elongated section. The first connecting portion and the second connecting portion are located at opposite ends in the length direction of the rack. The locking portion extends between the rack body and the elongated section. When the driving member moves relative to the telescopic tube along the first direction, it drives the locking portion to move towards the elongated section along the first direction.

[0018] Furthermore, the rack is a one-piece component, with the rack body, the elongated section, the first connecting section, and the second connecting section all connected together to form an elongated rectangular frame. This design makes the rack structure more stable.

[0019] Furthermore, the power tool also includes a rear end ring installed at the rear end of the telescopic tube and a front end cylinder installed at the front end of the telescopic tube. The rear end ring is provided with a first boss, a second boss, a first extension arm extending forward from the first boss, and a second extension arm extending forward from the second boss. The front end cylinder is provided with a third boss, a fourth boss, a third extension arm extending rearward from the third boss, and a fourth extension arm extending rearward from the fourth boss. The second boss is provided with a first groove, which is recessed rearward from the front side of the second boss. The fourth boss is provided with a second groove, which is recessed forward from the rear side of the fourth boss. The rack is located between the second boss and the fourth boss. The rear end of the rack extends into the first groove, and the front end of the rack extends into the second groove.

[0020] Furthermore, the power tool also includes a suction hose, a rear ring installed at the rear end of the telescopic tube, and a front cylinder installed at the front end of the telescopic tube. The front end of the suction hose is sleeved with the front cylinder, and the suction hose passes through the rear ring. The wall of the telescopic tube has a first positioning port, a second positioning port, a third positioning port, and a fourth positioning port. The rear ring extends forward with a first extension arm and a second extension arm, and the front cylinder extends backward with a third extension arm and a fourth extension arm. The first extension arm has a first protrusion limited to the first positioning port, the second extension arm has a second protrusion limited to the second positioning port, the third extension arm has a third protrusion limited to the third positioning port, and the fourth extension arm has a fourth protrusion limited to the fourth positioning port.

[0021] Furthermore, the rear end ring is provided with a first boss, a second boss, a first arc-shaped portion, and a second arc-shaped portion. A first extension arm extends forward from the first boss into the telescopic tube, and a second extension arm extends forward from the second boss into the telescopic tube. The first arc-shaped portion and the second arc-shaped portion are respectively connected between the first boss and the second boss, and the first boss, the first arc-shaped portion, the second boss, and the second arc-shaped portion are connected together to form a ring. The front end cylinder is also provided with a third boss and a fourth boss. A third extension arm extends backward from the third boss into the telescopic tube, and a fourth extension arm extends backward from the fourth boss into the telescopic tube.

[0022] Furthermore, the first positioning port, the second positioning port, the third positioning port, and the fourth positioning port are openings that penetrate the wall of the telescopic tube. The first positioning port and the second positioning port are opposite each other in the radial direction of the telescopic tube, and the third positioning port and the fourth positioning port are opposite each other in the radial direction of the telescopic tube. The first extension arm, the second extension arm, the third extension arm, and the fourth extension arm are located on the periphery of the suction hose. The first protrusion enters the first positioning port from inside the telescopic tube, the second protrusion enters the second positioning port from inside the telescopic tube, the third protrusion enters the third positioning port from inside the telescopic tube, and the fourth protrusion enters the fourth positioning port from inside the telescopic tube.

[0023] Furthermore, the power tool also includes a scale, a rear end ring mounted at the rear end of the telescopic tube, and a front end cylinder mounted at the front end of the telescopic tube. The rear end ring is also provided with a third groove that is recessed to the rear, and the front end cylinder is also provided with a fourth groove that is recessed to the front. The scale is located between the rear end ring and the front end cylinder, with the rear end of the scale extending into the third groove and the front end of the scale extending into the fourth groove.

[0024] Furthermore, the rear end ring is provided with a first boss, a second boss, a first arc-shaped portion, and a second arc-shaped portion, with the first arc-shaped portion and the second arc-shaped portion respectively connected between the first boss and the second boss. The front end cylinder is provided with a third boss, a fourth boss, a third arc-shaped portion, and a fourth arc-shaped portion, with the third arc-shaped portion and the fourth arc-shaped portion respectively connected between the third boss and the fourth boss. A third groove is provided in the first arc-shaped portion, and the third groove is recessed from the front side of the first arc-shaped portion to the rear. A fourth groove is provided in the third arc-shaped portion, and the fourth groove is recessed from the rear side of the third arc-shaped portion to the front. The scale is limited to the area between the first arc-shaped portion and the third arc-shaped portion.

[0025] Furthermore, the power tool is a vacuum cleaner, which also includes a body, a rear end ring installed at the rear end of the telescopic tube, and a motor located inside the body. The telescopic tube can extend outward and retract inward along its length. The rear end ring is provided with a guide groove, and the body is provided with a guide rib. The guide rib is partially embedded in the guide groove. During the process of the telescopic tube retracting into the body, the rear end ring moves backward along the guide rib through the guide groove.

[0026] Furthermore, the rear end ring is also provided with a first boss, and a guide groove is recessed in the first boss and extends through the front and rear sides of the first boss.

[0027] Furthermore, the rear end ring is also provided with a second boss, a first extension arm, and a second extension arm. The first extension arm extends forward from the first boss into the telescopic tube, and the second extension arm extends forward from the second boss into the telescopic tube.

[0028] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0029] Figure 1 This is a perspective view of the power tool kit of the present invention (the power tool and the auxiliary handle assembly are combined together);

[0030] Figure 2 This is an exploded view of the power tool kit of the present invention from one angle;

[0031] Figure 3 This is an exploded view of the power tool kit of the present invention from another angle;

[0032] Figure 4 This is an exploded view of the power tool kit of the present invention from another angle;

[0033] Figure 5 This is a longitudinal sectional view of the power tool kit of the present invention along the axis of the telescopic tube (without sectioning the suction hose);

[0034] Figure 6 This is a horizontal cross-sectional view of the power tool kit of the present invention along the axis of the telescopic tube (without cutting the suction hose);

[0035] Figure 7 This is a longitudinal sectional view of the power tool kit of the present invention (the power tool and the auxiliary handle assembly are combined together). The sectional view is the plane containing the handle axis and is perpendicular to the telescopic tube axis.

[0036] Figure 8 This is a longitudinal sectional view of the power tool kit of the present invention along line AA;

[0037] Figure 9 This is a longitudinal sectional view of the power tool kit of the present invention, perpendicular to the axis of the telescopic tube and cut through the first stop unit;

[0038] Figure 10 This is a perspective view of the combined state of the front cylinder, telescopic tube, rear ring, suction hose, and rear adapter port of the power tool kit of the present invention.

[0039] Figure 11 This is a perspective view of the first housing of the power tool kit of the present invention (the first metal part is not shown);

[0040] Figure 12 This is a perspective view of the second housing of the power tool kit of the present invention (the second metal part is not shown);

[0041] Figure 13 This is a perspective view of the first switch of the power tool kit of the present invention;

[0042] Figure 14 This is an exploded view of the front cylinder, telescopic tube, rear ring, scale, rack, first stop unit, and second stop unit of the power tool kit of the present invention.

[0043] Figure 15 This is an exploded view of the front cylinder, telescopic tube, rear ring, scale, rack, first stop unit, and second stop unit of the power tool kit of the present invention.

[0044] Figure 16 An exploded view of an angle of the first stop unit of the power tool kit of the present invention;

[0045] Figure 17 This is an exploded view of the first stop unit of the power tool kit of the present invention from another angle;

[0046] Figure 18 This is a perspective view of the first stop unit of the power tool kit of the present invention;

[0047] Figure 19 This is a three-dimensional assembly diagram of the positioning knob, limit ring, and first spring of the power tool kit of the present invention;

[0048] Figure 20This is a perspective view of the rear end ring of the power tool kit of the present invention;

[0049] Figure 21 This is a perspective view of the front end cylinder of the power tool kit of the present invention;

[0050] Figure 22 This is a circuit diagram of the external power supply circuit for the battery pack of the power tool kit of the present invention;

[0051] Figure 23 This is a schematic diagram of the peripheral circuit of the first wireless communication module of the power tool kit of the present invention;

[0052] Figure 24 This is a schematic diagram of the peripheral circuit of the second wireless communication module of the power tool kit of the present invention;

[0053] Figure 25 This is a circuit diagram of the drive circuit for the motor of the power tool kit of the present invention;

[0054] Figure 26 This is the peripheral circuit diagram of the control chip for the power tool kit of the present invention.

Detailed Implementation Methods

[0055] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0056] Reference Figures 1 to 21 As shown, a power tool kit includes a power tool and an auxiliary handle assembly, which is detachably connected to the power tool. The auxiliary handle assembly includes a fastening element for locking the auxiliary handle assembly to the power tool, said fastening element being a screw (not shown) or a positioning knob 1. The positioning knob 1 includes a knob portion 10 and a stud 11 extending beyond the knob portion 10. The auxiliary handle assembly includes a first hole 20, and the power tool has a second hole 30. The stud 11 can pass through the first hole 20 and the second hole 30 and be screwed into and locked to the second hole 30. Compared to a screw, the positioning knob 1 is convenient for the operator to tighten directly by hand without the need for a tool, making it very easy to operate. The positioning knob 1 also has a first screw (not shown) that fixes the stud 11 to the knob portion 10. The stud 11 has a threaded hole 110 for screwing and locking with the first screw. The stud 11 is locked to the positioning knob 1 by the first screw, and one end of the stud 11 is received in the knob portion 10.

[0057] The auxiliary handle assembly also includes a first stop wall 21 and a second stop wall 22. The first stop wall 21 can be detachably locked to the power tool via a positioning knob 1. A first hole 20 is provided in and passes through the first stop wall 21. Furthermore, the first hole 20 passes vertically through the first stop wall 21. When the first stop wall 21 is locked to the power tool, it abuts downward against the upper side of the power tool, and the knob part 10 is located on the upper side of the first stop wall 21. This design allows the operator to easily turn the positioning knob 1 from above the power tool, providing a large operating space and making operation more convenient. When the auxiliary handle assembly is detached from the power tool, the positioning knob 1 is movably held on the first stop wall 21. The first stop wall 21 is arranged horizontally, and the second stop wall 22 is arranged vertically, forming an L-shape. The first stop wall 21 is perpendicular to the second stop wall 22. The auxiliary handle assembly also includes a first spring 12 fitted onto the stud 11 and a retaining ring 13 held on the stud 11. The retaining ring 13 and the positioning knob 1 are located on opposite sides of the first stop wall 21. The first spring 12 is positioned between the retaining ring 13 and the first stop wall 21. When the auxiliary handle assembly is locked to the power tool, one end of the opposite ends of the first spring 12 presses against the first stop wall 21, and the other end of the opposite ends of the first spring 12 presses against the retaining ring 13. The positioning knob 1 is movably held on the first stop wall 21, making it less likely to be lost, and the locking process between the auxiliary handle assembly and the power tool is quicker and more convenient. The stud 11 has a slot (not shown), and the retaining ring 13 is held in the slot. The retaining ring 13 is C-shaped, and the slot is an annular groove surrounding the axis of the stud 11.

[0058] The power tool has a first groove 31 and a first baffle 32 that covers one side of the first groove 31. The first baffle 32 forms one of the groove walls of the first groove 31. The auxiliary handle assembly also includes a second groove 23, with a second baffle 22 covering one side of the second groove 23. The second baffle 22 forms one of the groove walls of the second groove 23. When the auxiliary handle assembly is locked to the power tool, the second baffle 22 is at least partially embedded in the first groove 31 and the first baffle 32 is at least partially embedded in the second groove 23. This design makes the connection between the auxiliary handle assembly and the power tool more secure. The second baffle 22 is embedded downward in the first groove 31, and the first baffle 32 is embedded upward in the second groove 23. The auxiliary handle assembly also includes a downwardly protruding first protrusion 24, which forms the second groove 23 with a gap between the first protrusion 24 and the second baffle 22.

[0059] When the auxiliary handle assembly is locked to the power tool, the first stop 21 abuts against the upper side of the power tool and the second stop 22 abuts against one of the left or right sides of the power tool. Furthermore, the second stop 22 abuts against the right side of the power tool to the left or against the left side of the power tool to the right. Figure 7The auxiliary handle assembly is positioned on the right side of the power tool, thus the second stop wall 22 rests against the right side of the power tool. The power tool includes a first upper surface 330 and a first side surface 331. The first upper surface 330 is located on the upper side of the power tool, and the first side surface 331 is located on one of the left and right sides of the power tool. The first side surface 331 and the second stop wall 22 are spaced apart to form the first groove 31. When the auxiliary handle assembly is locked to the power tool, the first stop wall 21 rests against the first upper surface 330 and the second stop wall 22 rests against the first side surface 331. The first upper surface 330 is horizontal, and the first side surface 331 is vertical.

[0060] The power tool also includes a first recess 250 and a second recess 251. A second hole 30 communicates with the first recess 250. The first recess 250 is located on the upper side of the power tool, and the second recess 251 is located on one of the left and right sides of the power tool. When the auxiliary handle assembly is locked to the power tool, the first stop wall 21 is accommodated in the first recess 250, and the second stop wall 22 is accommodated in the second recess 251. The second hole 30 extends downward from the first recess 250 and includes a first hole segment 300 and a second hole segment 301. The first hole segment 300 is located between the second hole segment 301 and the first recess 250. The second hole segment 301 is provided with an internal thread 302 for screwing and locking with a fastening unit. Figure 7 As shown, the stud 11 is provided with an external thread 112 for engaging with the internal thread 302, and the internal thread 302 is screwed and locked to the stud 11 of the positioning knob 1.

[0061] The power tool includes a body, a motor 700, a fan 701, and a battery pack 73. The motor 700 and fan 701 are located inside the body. The motor 700 provides power for suction of dust, debris, and other waste. Specifically, the motor 700 drives the fan 701 to rotate, generating suction airflow. The fan 701 is typically an impeller-type fan. The rated power of the motor 700 is between 50W and 1800W. The power tool is powered by the battery pack 73, which is plugged into the body and located on the outside of the body. The rated voltage of the battery pack 73 is between 10V and 60V. The body includes a first outer shell 40 and a second outer shell 41. A first metal component 42 is fixedly mounted on the first outer shell 40 and can be secured to the first outer shell 40 with screws. A first recess 250, a second recess 251, and a first hole 20 are respectively provided on the first metal component 42 and constitute part of the first metal component 42. The first outer shell 40 is mainly made of plastic, while the first metal component 42 is made of stainless steel. The first groove 31, the first upper surface 330, and the first side surface 331 are respectively disposed on the first metal part 42 and constitute a part of the first metal part 42. The first groove 31 communicates with the second recess 251 and is located on the lower side of the second recess 251. When the auxiliary handle assembly is locked to the power tool, the lower edge of the second stop 22 is embedded in the first groove 31. The second housing 41 is fixedly provided with the second metal part 43. The first housing 40 and the second housing 41 are approximately symmetrical from left to right, and the first metal part 42 and the second metal part 43 are approximately symmetrical from left to right. The auxiliary handle assembly can be connected to either the left or right side of the power tool. Furthermore, the auxiliary handle assembly can be locked to the first metal part 42 by a fastening unit, and when the auxiliary handle assembly is on the other side of the power tool, it can also be locked to the second metal part 43 by a fastening unit.

[0062] The auxiliary handle assembly includes an elongated handle 51, a head assembly that can be fixed to the handle 51, and a connecting device 52. The head assembly includes a housing 44 that can be fixed to the handle 51 and a retaining ring 45. The handle 51 and the retaining ring 45 are located on opposite sides of the housing 44. The auxiliary handle assembly is locked to the power tool via the connecting device 52. The fastening element, the first stop 21, the second stop 22, the first protrusion 24, the first spring 12, and the limiting ring 13 are all part of the connecting device 52. The connecting device 52 is held on the retaining ring 45. The connecting device 52 includes an arcuate portion 53 located within the retaining ring 45 and adapted to the retaining ring 45. The first stop 21 and the second stop 22 are located on opposite sides of the arcuate portion 53. A portion of the retaining ring 45 is accommodated in the connecting device 52 and abuts against the arcuate portion 53. The connecting device 52 is provided with a receiving groove 54, in which a portion of the coil 45 is received. The receiving groove 54 is arc-shaped and adapted to the coil 45. The connecting device 52 is locked to the power tool by a fastening unit, thereby locking the auxiliary handle assembly to the power tool. The connecting device 52 is also locked to the first metal part 42 by the fastening unit. When the auxiliary handle assembly is connected to the other side of the power tool, the connecting device 52 can also be locked to the second metal part 43 by the fastening unit. The head assembly also includes a long screw 48, which is T-shaped. The coiled ring 45 is a steel ring. The coiled ring 45 is integrally connected to two extension arms 450 and 451. The two extension arms 450 and 451 are respectively provided with a third opening (not shown). The first extension 480 of the long screw 48 passes through the third opening of the extension arm 450 and hooks the extension arm 450. The second extension 481 of the long screw 48 passes through the third opening of the extension arm 451 and hooks the extension arm 451, thereby making the long screw 48 and the coiled ring 45 together. The long screw 48 is screwed to the handle 51 to fix the housing 44 and the handle 51 together.

[0063] The power tool also includes a first switch 71 for turning the motor 700 on and off. The auxiliary handle assembly has a second switch 55 for turning the motor 700 on and off. Because the auxiliary handle assembly also has a switch for turning the motor 700 on and off, the second switch 55 allows for easy and convenient turning of the motor 700, making operation easier and saving energy. The auxiliary handle assembly and the power tool communicate wirelessly. The auxiliary handle assembly also includes a first wireless communication module 56, a battery (not shown) powering the first wireless communication module 56, and a circuit board 59. The first wireless communication module 56 is mounted on the circuit board 59, which can be fixed inside the auxiliary handle assembly with screws. The second switch 55 is electrically connected to the first wireless communication module 56. The battery is a button cell with a voltage of 3.3 volts. The power tool also has a second wireless communication module 72 that wirelessly communicates with the first wireless communication module 56. The first switch 71 has a first state, a second state, and a third state, each corresponding to a different position. The first, second, and third states correspond to the motor being normally open, normally closed, and controlled by the second switch 55, respectively. Specifically, when the first switch 71 is in the first state, the motor 700 is on; when the first switch 71 is in the second state, the motor 700 is off; and when the first switch 71 is in the third state, the motor 700 is turned on and off via the second switch 55. The second switch 55 can be a push-button switch, a rocker switch, or a slide switch. In this embodiment, the second switch 55 is a push-button switch, and the first switch 71 is a rocker switch (another name for a rocker switch is a rocker switch). The main control switch in the previous application EP3222386A is a slide switch. Since push-button switches, rocker switches, and slide switches are all common existing switch types, and the innovation of this application does not lie in the structure of the first switch 71 and the second switch 55 themselves, they will not be described in detail here.

[0064] The control process will be specifically explained using the first switch 71, which employs a rocker switch, in this embodiment: First switch 71 (refer to...) Figure 13 The first switch 71 is marked with "-", "0", and "=". When the first switch 71 is in the "-" position, the first switch 71 is in the first state; when the first switch 71 is in the "0" position, the first switch 71 is in the second state; and when the first switch 71 is in the "=" position, the first switch 71 is in the third state. Figures 22 to 26 This is the relevant circuit diagram. (Refer to...) Figure 22 The first switch 71 corresponds to switch S1. When switch S1 is not connected to any other contacts, the first switch 71 is in the second state. At this time, the positive terminal (BAT+) of the battery pack 73 is not connected to the circuit, so the motor 700 is in the off state. When switch S1 is connected to both contacts a, the first switch 71 is in the first state; when switch S1 is connected to both contacts b, the first switch 71 is in the third state. (See reference...) Figure 25If MOSFET Q6 is turned on, the circuit between the two ends of motor 700 is connected, thus turning motor 700 on. If MOSFET Q6 is not turned on, the circuit between the two ends of motor 700 is not connected, thus turning motor 700 off. For MOSFET Q6 to be turned on, the "VAC FET ON" terminal needs to be connected to a high level (e.g., 3.3 volts) and the "VAC FET OFF" terminal needs to be connected to a low level (e.g., zero potential). When switch S1 is connected to both contacts a, the AUTO terminal is not grounded (grounding means connecting to zero potential). The control chip of the power tool (model R5F1026AASP, located inside the machine body) detects that the voltage at the AUTO terminal is still 3.3 volts. Therefore, the first switch 71 is identified as the first state. Then, the control chip gives the "VAC FET ON" terminal a high level (e.g., 3.3 volts) and the "VAC FET OFF" terminal a low level (e.g., zero potential). When the "OFF" terminal is at a low level (e.g., 0 volts), transistors Q2 and Q3 are turned on, transistor Q1 is turned off, and MOSFET Q6 is turned on, thus starting motor 700. When switch S1 is connected to both contacts b, the AUTO terminal is grounded and becomes zero potential. The control chip detects that the AUTO terminal is zero potential and determines that the first switch 71 is in the third state. At this time, the second switch 55 (corresponding to...) can be used. Figure 23The motor 700 is turned on and off by switch S2. In the third state, each press of the second switch 55 changes the state of the motor 700: from on to off or from off to on. Specifically, pressing the second switch 55 activates S2, connecting the button battery (labeled B) to the first wireless communication module 56. The first wireless communication module 56 then sends a signal to the second wireless communication module 72. The second wireless communication module 72 feeds back to the control chip via the REMOTE pin. The control chip then turns on the previously off motor 700, following the same process as before: a high level is connected to the "VACFET ON" pin, and the "VACFET" pin is turned off. When the "OFF" terminal is connected to a low level, transistors Q2 and Q3 conduct, while transistor Q1 is de-conducted, leading to the conduction of MOSFET Q6 and thus starting motor 700. To turn off motor 700, the second switch 55 is pressed again, reconnecting switch S2. This powers on the first wireless communication module 56, which sends a signal to the second wireless communication module 72. The second wireless communication module 72 feeds back to the control chip via the REMOTE terminal. The control chip then changes the "VAC FET ON" terminal from high to low and switches the "VAC FET ON" terminal to a low level. When the "OFF" terminal changes from low to high, transistors Q2 and Q3 are off, while transistor Q1 is on, which in turn turns off MOSFET Q6. Therefore, no power-on circuit is formed between the two ends of motor 700, and motor 700 is de-energized and shut down. The first wireless communication module 56 and the second wireless communication module 72 can be used as wireless transceiver modules. Both modules can use the same wireless module (model DL-bk24K6, manufactured by Shenzhen Boxin Company). It should be noted that since the control chip and wireless module are very common electronic components, the control chip, the first wireless communication module 56, and the second wireless communication module 72 can be replaced with other control chips and wireless modules as needed. Furthermore, since some wireless modules have strong computing capabilities and can be used as control chips themselves, a separate control chip can be omitted. In this application, the second wireless communication module 72 can be used as a control chip. The circuit shown in this application is merely an example. Obviously, others with conventional circuit knowledge can easily build various different circuits and achieve the circuit functions of this application.

[0065] The first switch 71 is located on the body and exposed on the outside of the body, while the second switch 55 is located on the housing 44 and exposed on the outside of the housing 44. The housing 44 has a first opening 460 corresponding to at least partially accommodating the second switch 55. The closest distance between the handle 51 and the second switch 55 is in the range of 3 mm to 15 mm (preferably 4 mm, 5 mm, 7 mm, or 10 mm). This design allows the fingers of the hand holding the handle 51 to easily operate the second switch 55. The first wireless communication module 56 and the battery are located inside the housing 44. The housing 44 includes a first end near the handle 51 and a second end opposite to the first end and away from the handle 51. The second switch 55 is located at the first end. The auxiliary handle assembly also includes a battery clip 58 for holding the battery, which is held in the clip opening 580 of the battery clip 58. The housing 44 also has a second opening 461 corresponding to the battery clip 58, which allows the battery clip 58 to enter and exit the housing 44, carrying the battery through the second opening 461. The handle 51 also includes a grip portion 510. The auxiliary handle assembly also includes a flange portion 511 located between the housing 44 and the grip portion 510. The second switch 55 and the grip portion 510 are located on opposite sides of the flange portion 511. The flange portion 511 has a clearance notch 512 corresponding to the position of the second switch 55, which allows the operator's fingers holding the grip portion 510 to pass through the clearance notch 512 to the side where the housing 44 is located to operate the second switch 55. The clearance notch 512 can effectively reduce or eliminate the obstruction of the flange portion 511 to the operator's fingers, improving the ease of operating the second switch 55. The flange portion 511 is a ring with a defect. In this embodiment, the flange portion 511 is provided at one end of the housing 44 and forms part of the housing 44. Of course, it can also be provided at one end of the handle 51 and form part of the handle 51. The housing 44 includes a first sidewall 470, a second sidewall 471, a third sidewall 472, and a fourth sidewall 473. The first sidewall 470 and the second sidewall 471 are spaced apart from each other. The third sidewall 472 and the fourth sidewall 473 are located on the left and right sides of the housing 44 and are respectively connected between the first sidewall 470 and the second sidewall 471. The first opening 460 is formed in either the first sidewall 470 or the second sidewall 471, preferably in the first sidewall 470. The first sidewall 470 and the second sidewall 471 are generally flat, while the third sidewall 472 and the fourth sidewall 473 are respectively arc-shaped.

[0066] The motor 700 provides suction power. The power tool also includes a telescopic tube 74, a first stop unit that moves with the telescopic tube 74, a plurality of receiving portions 802 distributed along the length of the telescopic tube 74, and a second stop unit. The first stop unit limits the depth to which the telescopic tube 74 retracts into the machine body, and the second stop unit limits the length of the telescopic tube 74 extending outward from the machine body. The first stop unit is provided with a drive member 60, and the drive member 60 is provided with a locking portion 600 that can enter and disengage from the receiving portion 802. After the locking portion 600 disengages from the receiving portion 802, the first stop unit can move relative to the telescopic tube 74 along the length of the telescopic tube 74. When the locking portion 600 enters the receiving portion 802, the movement of the first stop unit relative to the telescopic tube 74 along the length of the telescopic tube 74 is blocked. When the drive member 60 moves relative to the telescopic tube 74 in a first direction, it causes the locking portion 600 to disengage from the receiving portion 802 in the first direction. The telescopic tube 74 extends and retracts in a front-to-back direction, and the length direction of the telescopic tube 74 is the front-to-back direction. The first direction is perpendicular to the length of the telescopic tube 74. In this case, when the driving member 60 moves relative to the telescopic tube 74 along the first direction, it causes the locking part 600 to disengage from the receiving part 802 along the first direction. The direction in which the driving member 60 unlocks is consistent with the direction in which the locking part 600 disengages from the receiving part 802, making the unlocking design simple. The locking part 600 is located on the side of the driving member 60 facing the telescopic tube 74.

[0067] The driving component 60 also includes a main body 601 and a button 602. The button 602 is located at one end of the main body 601 at opposite ends in a first direction. The locking part 600 is located on the side of the main body 601 facing the telescopic tube 74 and extends from the main body 601 toward the telescopic tube 74. Furthermore, the button 602 is located at the upper end of the main body 601. The driving component 60 is a one-piece part, with the main body 601, button 602, and locking part 600 integrally formed. The locking part 600 extends from the main body 601 toward the telescopic tube 74 along a second direction perpendicular to the telescopic tube 74. The second direction is perpendicular to the first direction. The locking part 600 is a protrusion protruding toward the telescopic tube 74. The telescopic tube 74 is provided with a guide rail extending in its length direction. The guide rail includes an upper guide rail 740 and a lower guide rail 741 extending in the length direction of the telescopic tube 74, respectively. The first stop unit also includes a sliding member 61 that slides along the guide rail when moving, and a return spring 62 that drives the drive member 60 to reset. The drive member 60 is assembled to the sliding member 61. The drive member 60 also includes a first guide portion 603, a first stop portion 604, and a second stop portion 605. The first guide portion 603 is located on the side of the drive member 60 opposite to the telescopic tube 74. The sliding member 61 is provided with a second guide portion 610. One of the first guide portion 603 and the second guide portion 610 is a guide groove, and the other of the first guide portion 603 and the second guide portion 610 is a guide rib that can slide along the guide groove. In this embodiment, the first guide portion 603 is a guide groove and the second guide portion 610 is a guide rib. The first guide portion 603 and the locking portion 600 are located on opposite sides of the main body portion 601. The first guide portion 603 and the second guide portion 610 extend along the first direction. The first guide portion 603 and the second guide portion 610 cooperate to guide the drive member 60 to move along the first direction.

[0068] The button portion 602 and the return spring 62 are located on opposite sides of the drive member 60 in a first direction. The first stop portion 604 and the second stop portion 605 are located on the front and rear sides of the drive member 60, and the first stop portion 604 and the second stop portion 605 are accommodated in the slider 61. The slider 61 includes an upper sliding groove 611 that matches the upper guide rail 740, a lower sliding groove 612 that matches the lower guide rail 741, a first side plate 613 and a second side plate 614 that are opposite each other, a third side plate 615 that connects the first side plate 613 and the second side plate 614, a first eaves portion 616 for stopping the first stop portion 604, and a second eaves portion 617 for stopping the first stop portion 604. The first stop portion 604 is located between the first eaves portion 616 and the third side plate 615, and the second stop portion 605 is located between the second eaves portion 617 and the third side plate 615. The return spring 62 presses against the third side plate 615. During movement, the slider 61 moves along the upper guide rail 740 and the lower guide rail 741 via the upper sliding groove 611 and the lower sliding groove 612. The first eaves 616 is connected to the first side plate 613, the second eaves 617 is connected to the second side plate 614, and the main body 601 is located between the first side plate 613 and the second side plate 614. The first direction is downward or upward; in this embodiment, the first direction is preferably downward. The first stop 604 presses upward against the first eaves 616, the second stop 605 presses upward against the second eaves 617, and the return spring 62 presses downward against the third side plate 615. The first stop 604 and the second stop 605 are ribs with one end facing the telescopic tube 74, and the first stop 604 and the second stop 605 are perpendicular to the telescopic tube 74. The first stop 604 is located on the side of the drive member 60 facing the body, and the second stop 605 is located on the side of the drive member 60 facing away from the body. The return spring 62 presses against the third side plate 615 along the first direction, the first stop 604 presses against the first eaves 616 against the first direction, and the second stop 605 presses against the second eaves 617 against the first direction. The drive member 60 also includes an extension post 606, which and the return spring 62 are located on opposite sides of the drive member 60 in the first direction. The extension post 606 extends from the main body 601 toward the third side plate 615, and the return spring 62 is sleeved on the extension post 606. The extension post 606 extends from the main body 601 along the first direction, and the extension post 606 and the return spring 62 are accommodated in the slider 61.

[0069] The power tool also includes a rack 80 held on the telescopic tube 74. The rack 80 includes a plurality of teeth 801 distributed along the length of the telescopic tube 74, and the tooth grooves between adjacent teeth 801 constitute the receiving portion 802. A first guide portion 603 is located on the side of the drive member 60 opposite to the rack 80, and a locking portion 600 is located on the side of the drive member 60 facing the rack 80. After the locking portion 600 disengages from the tooth grooves, the first stop unit can move along the upper guide rail 740 and the lower guide rail 741. The rack 80 is confined between the upper guide rail 740 and the lower guide rail 741. The lower side of the upper guide rail 740 is recessed upward with an upper long groove 742 extending along the length of the telescopic tube 74, and the upper side of the lower guide rail 741 is recessed downward with a lower long groove 743 extending along the length of the telescopic tube 74. The upper edge of the rack 80 is received in the upper long groove 742, and the lower edge of the rack 80 is received in the lower long groove 743. The second stop unit includes a first part that is fixed to the body and cannot move with the telescopic tube 74, and a second part that is fixed to the telescopic tube 74 and can move with the telescopic tube 74. The first part includes a button 630 with an extension rod 631 and a second spring 632 that drives the button 630 to reset. The second spring 632 is sleeved on the extension rod 631. The second part includes a second drive member 64, a second slider 65, and a second reset spring 66. The second drive member 64 is accommodated in the second slider 65. The second housing 41 is provided with a through 410 for accommodating the button 630. The second slider 65 is held between the upper guide rail 740 and the lower guide rail 741. When the button 630 is pressed along the first direction, the end of the extension rod 631 pushes the second drive member 64 to move along the first direction, causing the second locking part 640 of the second drive member 64 to disengage from the accommodating part 802 along the first direction, and the end of the extension rod 631 is inserted into the second slider 65 along the first direction. When the telescopic tube 74 is retracted into the body, the second sliding member 65 is restricted from moving forward and backward because the lower end of the extension rod 631 is inserted into it. The second driving member 64 and the second sliding member 65 will remain in their original positions and will not move with the telescopic tube 74. When the button 630 is released, the button 630 and the second driving member 64 are reset. The lower end of the extension rod 631 disengages from the second sliding member 65 and no longer obstructs the second sliding member 65. The second locking part 640 of the second driving member 64 returns to the tooth groove and locks the second driving member 64. When the telescopic tube 74 is retracted into the body, the second driving member 64 and the second sliding member 65 will move with the telescopic tube 74.

[0070] The rack 80 includes a rack body 800, an elongated section 803 parallel to the rack body 800, and a first connecting portion 804 and a second connecting portion 805 respectively connected between the rack body 800 and the elongated section 803. The rack body 800 and the elongated section 803 extend along the length direction of the telescopic tube 74. The toothed portion 801 and the tooth groove are part of the rack body 800 and are located on the side of the rack body 800 facing the elongated section 803. The first connecting portion 804 and the second connecting portion 805 are located at opposite ends in the length direction of the rack 80. The first connecting portion 804 and the second connecting portion 805 are strip-shaped. The locking portion 600 extends into the space between the rack body 800 and the elongated section 803. When the driving member 60 moves relative to the telescopic tube 74 along the first direction, it drives the locking portion 600 to move towards the elongated section 803 along the first direction. The rack 80 is a one-piece component. The rack body 800, the long strip 803, the first connecting part 804, and the second connecting part 805 are connected together to form a long rectangular frame. This design makes the rack 80 more stable.

[0071] The power tool also includes a suction hose 81, a rear ring 82 installed at the rear end of the telescopic tube 74, and a front tube 83 installed at the front end of the telescopic tube 74. The front end of the suction hose 81 is sleeved with the front tube 83. The front tube 83 has a rearwardly extending cylindrical portion 8392. The front end of the suction hose 81 is tightly fitted onto the cylindrical portion 8392. The suction hose 81 passes through the rear ring 82. The telescopic tube 74 can extend outward and retract inward along its length. The suction hose 81 and the rear ring 82 are at least partially accommodated in the machine body. The suction hose 81 is a spring hose with front-to-back elasticity. If the telescopic tube 74 is unobstructed, the compressed suction hose 81 will drive the telescopic tube 74 to extend forward. The telescopic tube 74 has a first positioning port 744, a second positioning port 745, a third positioning port 746, and a fourth positioning port 747 on its tube wall. The rear end ring 82 extends forward with a first extension arm 820 and a second extension arm 821. The front end cylinder 83 extends backward with a third extension arm 830 and a fourth extension arm 831. The first extension arm 820 has a first protrusion 822 that is limited to the first positioning port 744. The second extension arm 821 has a second protrusion 823 that is limited to the second positioning port 745. The third extension arm 830 has a third protrusion 832 that is limited to the third positioning port 746. The fourth extension arm 831 has a fourth protrusion 833 that is limited to the fourth positioning port 747. The first protrusion 822 forms a barb corresponding to the first positioning port 744 of the first extension arm 820, the second protrusion 823 forms a barb corresponding to the second positioning port 745 of the second extension arm 821, the third protrusion 832 forms a barb corresponding to the third positioning port 746 of the third extension arm 830, and the fourth protrusion 833 forms a barb corresponding to the fourth positioning port 747 of the fourth extension arm 831.

[0072] The rear end ring 82 is also provided with a first protrusion 824, a second protrusion 825, a first arcuate portion 826, and a second arcuate portion 827. A first extension arm 820 extends forward from the first protrusion 824 into the telescopic tube 74, and a second extension arm 821 extends forward from the second protrusion 825 into the telescopic tube 74. The first arcuate portion 826 and the second arcuate portion 827 are respectively connected between the first protrusion 824 and the second protrusion 825. The first protrusion 824, the first arcuate portion 826, the second protrusion 825, and the second arcuate portion 827 are connected together to form a ring. The front end cylinder 83 is also provided with a third protrusion 834 and a fourth protrusion 835. A third extension arm 830 extends rearward from the third protrusion 834 into the telescopic tube 74, and a fourth extension arm 831 extends rearward from the fourth protrusion 835 into the telescopic tube 74. The first boss 824 and the second boss 825 are located on opposite sides of the rear end ring 82 in the radial direction, and the third boss 834 and the fourth boss 835 are located on opposite sides of the front end cylinder 83 in the radial direction. The second boss 825 is provided with a first groove 8250, which is recessed from the front side of the second boss 825 to the rear. The fourth boss 835 is provided with a second groove 8350, which is recessed from the rear side of the fourth boss 835 to the front. The rack 80 is located between the second boss 825 and the fourth boss 835. The rear end of the rack 80 extends into the first groove 8250, and the front end of the rack 80 extends into the second groove 8350.

[0073] The power tool also includes a scale 84. The front end cylinder 83 is further provided with a third arc-shaped portion 836 and a fourth arc-shaped portion 837, which are respectively connected between a third boss 834 and a fourth boss 835. The third boss 834, the third arc-shaped portion 836, the fourth boss 835, and the fourth arc-shaped portion 837 are connected together to form a ring. The rear end ring 82 is provided with a rearwardly recessed third groove 828, and the front end cylinder 83 is also provided with a forwardly recessed fourth groove 838. The scale 84 is limited to the rear end. Between the end ring 82 and the front end cylinder 83; further, a third groove 828 is provided in the first arc-shaped portion 826, the third groove 828 is formed by recessing from the front side of the first arc-shaped portion 826 to the rear, a fourth groove 838 is provided in the third arc-shaped portion 836, the fourth groove 838 is formed by recessing from the rear side of the third arc-shaped portion 836 to the front, the scale 84 is limited between the first arc-shaped portion 826 and the third arc-shaped portion 836, the rear end of the scale 84 extends into the third groove 828, and the front end of the scale 84 extends into the fourth groove 838. The first positioning port 744, the second positioning port 745, the third positioning port 746, and the fourth positioning port 747 are openings through the wall of the telescopic tube 74. The first positioning port 744 and the second positioning port 745 are opposite each other in the radial direction of the telescopic tube 74, and the third positioning port 746 and the fourth positioning port 747 are opposite each other in the radial direction of the telescopic tube 74. The first extension arm 820, the second extension arm 821, the third extension arm 830, and the fourth extension arm 831 are located on the periphery of the suction hose 81. The first protrusion 822 enters the first positioning port 744 from inside the telescopic tube 74. The second protrusion 823 enters the second positioning port 745 from inside the telescopic tube 74, the third protrusion 832 enters the third positioning port 746 from inside the telescopic tube 74, and the fourth protrusion 833 enters the fourth positioning port 747 from inside the telescopic tube 74; furthermore, the first protrusion 822 is inserted into the first positioning port 744 from inside the telescopic tube 74, the second protrusion 823 is inserted into the second positioning port 745 from inside the telescopic tube 74, the third protrusion 832 is inserted into the third positioning port 746 from inside the telescopic tube 74, and the fourth protrusion 833 is inserted into the fourth positioning port 747 from inside the telescopic tube 74. The first extension arm 820 and the second extension arm 821 are radially opposite each other in the telescopic tube 74, and the third extension arm 830 and the fourth extension arm 831 are radially opposite each other in the telescopic tube 74. The first extension arm 820, the second extension arm 821, the third extension arm 830, and the fourth extension arm 831 are respectively attached to the inner surface of the tube wall of the telescopic tube 74; furthermore, the first extension arm 820, the second extension arm 821, the third extension arm 830, and the fourth extension arm 831 are respectively abutted against the inner surface of the tube wall of the telescopic tube 74. The rear end ring 82 is provided with a guide groove 829, and the machine body is provided with a guide rib 400. The guide rib 400 is elongated and partially embedded in the guide groove 829. During the process of the telescopic tube 74 retracting into the machine body, the rear end ring 82 moves backward along the guide rib 400 through the guide groove 829.The guide rib 400 is provided on the first outer shell 40 and forms part of the first outer shell 40. The guide groove 829 is recessed in the first boss 824 and passes through the front and rear sides of the first boss 824.

[0074] The power tool can be a vacuum cleaner, and the power tool also includes a battery pack 73, a dust cup 75, a filter 76, a rear adapter port 77, a front adapter port 78, and a suction head 79. The battery pack 73 and the dust cup 75 are respectively installed on the body. There are many ventilation holes 85 on both the left and right sides of the body. The suction head 79 is provided with a cantilever arm 794, bristles 790, a barb part 791, and an unlocking button 792 connected to the barb part 791. The front adapter port 78 is provided with a fourth opening 780, a slider 781, a first positioning protrusion 782, and a second positioning protrusion 783. The barb part 791 is integrally provided with the cantilever arm 794. After the suction head 79 is installed into the front adapter port 78, the barb 791 is positioned in the fourth opening 780. Pressing the unlock button 792 causes the cantilever arm 794 to be pressed into the front adapter port 78, allowing the barb 791 to retract into the front adapter port 78 and disengage from the fourth opening 780, thus allowing the suction head 79 to be removed from the front adapter port 78. The front adapter port 78 is connected to the front end portion 839 of the front end cylinder 83, which has a semi-annular groove 8390 and a positioning recess 8391. The front adapter port 78 can rotate approximately 180 degrees relative to the front end 839. It can rotate from the left side of the front end 839 to the top of the front end 839 and then to the right side of the front end 839, and can rotate back along the same path. During the rotation of the front adapter port 78 relative to the front end 839, the slider 781 rotates along the semi-annular groove 8390, which is approximately 180 degrees. When the slider 781 rotates to one end of the semi-annular groove 8390 and stops in place, the first positioning protrusion 782 is exactly located in the positioning recess 8391. When the slider 781 rotates to the opposite end of the semi-annular groove 8390 and stops in place, the second positioning protrusion 783 is exactly located in the positioning recess 8391. This design can increase the operator's sense of positioning when rotating left and right. This vacuum cleaner is suitable for use with electric drills or hammer drills to remove dust, debris, and other debris generated during operation. Taking the use of a vacuum cleaner with an electric drill as an example, the electric drill and vacuum cleaner are connected side by side via the auxiliary handle assembly (the clamping ring 45 secures the electric drill, and the connecting device 52 is locked to the vacuum cleaner by the fastening unit). The drill bit passes through the center 793 of the bristles 790. The motor 700 rotates, driving the fan 701 to create an airflow that sucks up dust, debris, and other debris. The airflow carries the dust, debris, and other debris generated by the electric drill through the suction head 79, the front adapter port 78, the front tube 83, the suction hose 81, and the rear adapter port 77 into the dust collection cup 75, and further flows through the filter 76. The dust, debris, and other debris are filtered out by the filter 76 and remain in the dust collection cup 75. The clean airflow filtered by the filter 76 is discharged from the vacuum cleaner through the fan 701 and the vent 85.

[0075] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A power tool capable of picking up dust and debris, comprising a telescopic tube, a first stop unit movable along the telescopic tube, and a plurality of receiving portions distributed along the length direction of the telescopic tube, wherein the first stop unit is provided with a driving member, the driving member having a locking portion that can enter and disengage from the receiving portion, wherein after the locking portion disengages from the receiving portion, the first stop unit can move relative to the telescopic tube along the length direction of the telescopic tube, and when the locking portion enters the receiving portion, the movement of the first stop unit relative to the telescopic tube along the length direction of the telescopic tube is blocked, characterized in that: When the driving member moves relative to the telescopic tube in a first direction, it causes the locking part to disengage from the receiving part in the first direction; the power tool can be detachably connected to an auxiliary handle assembly; the auxiliary handle assembly includes a fastening element for locking the auxiliary handle assembly to the power tool, the fastening element being a positioning knob, the positioning knob including a knob portion and a stud extending beyond the knob portion, the auxiliary handle assembly having a first hole, the power tool having a second hole, the stud being able to pass through the first hole and the second hole and be screwed and locked in place with the second hole; the auxiliary handle assembly also includes a locking mechanism detachably secured to the power tool via the positioning knob. The first stop of the power tool has a first hole located in and passing through it. When the auxiliary handle assembly is separated from the power tool, the positioning knob is held in place on the first stop. The auxiliary handle assembly also includes a first spring fitted on a stud and a limiting ring held on the stud. The limiting ring and the positioning knob are located on opposite sides of the first stop. The first spring is limited between the limiting ring and the first stop. When the auxiliary handle assembly is locked to the power tool, one end of the opposite ends of the first spring presses against the first stop and the other end of the opposite ends of the first spring presses against the limiting ring.

2. The power tool according to claim 1, characterized in that: The first direction is perpendicular to the length of the telescopic tube; the power tool includes a motor with a rated power between 50W and 1800W.

3. The power tool according to claim 1, characterized in that: The driving component also includes a main body and a button. The button is located at one end of the opposite ends of the main body in a first direction, and the locking part is located on the side of the main body facing the telescopic tube and extends from the main body toward the telescopic tube.

4. The power tool according to claim 3, characterized in that: The main body, button, and locking parts are integrally formed. The locking part extends from the main body along a second direction perpendicular to the telescopic tube, and the second direction is perpendicular to the first direction.

5. The power tool according to claim 3, characterized in that: The telescopic tube is provided with a guide rail extending in its length direction. The first stop unit also includes a slider that slides along the guide rail when moving. The drive member is assembled to the slider. The drive member also includes a first guide portion located on the side of the drive member opposite to the telescopic tube. The slider is provided with a second guide portion. One of the first guide portion and the second guide portion is a guide groove, and the other of the first guide portion and the second guide portion is a guide rib that can slide along the guide groove.

6. The power tool according to claim 5, characterized in that: The first guide section and the second guide section extend along the first direction. The first guide section is a guide groove, and the second guide section is a guide rib.

7. The power tool according to claim 3, characterized in that: The telescopic tube is in the front-to-back direction. The first stop unit also includes a sliding member and a return spring for driving the drive member to reset. The drive member also includes a button part, a first stop part, and a second stop part. The button part and the return spring are located on opposite sides of the drive member in the first direction. The first stop part and the second stop part are located on the front and back sides of the drive member. The sliding member includes a first side plate and a second side plate that are opposite each other, a third side plate that connects the first side plate and the second side plate, a first eaves part connected to the first side plate for stopping the first stop part, and a second eaves part connected to the second side plate for stopping the first stop part. The first stop part is located between the first eaves part and the third side plate, and the second stop part is located between the second eaves part and the third side plate. The return spring presses against the third side plate, and the main body part is located between the first side plate and the second side plate.

8. The power tool according to claim 7, characterized in that: The return spring presses against the third side plate in the first direction, the first stop presses against the first eaves in the opposite direction, and the second stop presses against the second eaves in the opposite direction.

9. The power tool according to claim 1, characterized in that: It also includes a rack held on the telescopic tube, the rack comprising a plurality of teeth distributed along the length of the telescopic tube, the grooves between adjacent teeth forming the receiving portion.

10. The power tool according to claim 9, characterized in that: The locking part is located on the side of the drive component facing the rack, and the locking part is a protrusion that protrudes toward the telescopic tube.

11. The power tool according to claim 9, characterized in that: The telescopic tube is provided with an upper guide rail and a lower guide rail extending in its length direction. After the locking part disengages from the tooth groove, the first stop unit can move along the upper guide rail and the lower guide rail. The rack is limited between the upper guide rail and the lower guide rail. The lower side of the upper guide rail is recessed upward with an upper long groove extending in the length direction of the telescopic tube. The upper side of the lower guide rail is recessed downward with a lower long groove extending in the length direction of the telescopic tube. The upper edge of the rack is accommodated in the upper long groove, and the lower edge of the rack is accommodated in the lower long groove.

12. The power tool according to claim 11, characterized in that: It also includes a body, a second stop unit, and a motor located inside the body. The second stop unit includes a first part that is not movable with the telescopic tube and a second part that is movable with the telescopic tube. The first part includes a button with an extension rod and a second spring that drives the button to reset. The second spring is sleeved on the extension rod. The second part includes a second drive member, a second slider, and a second reset spring. The second slider is held on the upper and lower guide rails. When the button is pressed along the first direction, the end of the extension rod pushes the second drive member to move along the first direction, causing the second locking part of the second drive member to disengage from the tooth groove along the first direction and the end of the extension rod to insert into the second slider along the first direction.

13. The power tool according to claim 9, characterized in that: The rack includes a rack body, an elongated section parallel to the rack body, and a first connecting portion and a second connecting portion respectively connecting the rack body and the elongated section. The rack body and the elongated section extend along the length direction of the telescopic tube. The teeth and tooth grooves are part of the rack body and are located on the side of the rack body facing the elongated section. The first connecting portion and the second connecting portion are located at opposite ends in the length direction of the rack. A locking portion extends between the rack body and the elongated section. When the driving member moves relative to the telescopic tube along the first direction, it drives the locking portion to move towards the elongated section along the first direction.

14. The power tool according to claim 13, characterized in that: The rack is a single-piece component, consisting of the rack body, the long strip, the first connecting part, and the second connecting part, which are connected together to form a long rectangular frame.

15. The power tool according to claim 9, characterized in that: It also includes a rear end ring installed at the rear end of the telescopic tube and a front end cylinder installed at the front end of the telescopic tube. The rear end ring is provided with a first boss, a second boss, a first extension arm extending forward from the first boss, and a second extension arm extending forward from the second boss. The front end cylinder is provided with a third boss, a fourth boss, a third extension arm extending backward from the third boss, and a fourth extension arm extending backward from the fourth boss. The second boss is provided with a first groove, which is recessed backward from the front side of the second boss. The fourth boss is provided with a second groove, which is recessed forward from the rear side of the fourth boss. The rack is located between the second boss and the fourth boss. The rear end of the rack extends into the first groove, and the front end of the rack extends into the second groove.

16. The power tool according to claim 1, characterized in that: It also includes a suction hose, a rear ring installed at the rear end of the telescopic pipe, and a front cylinder installed at the front end of the telescopic pipe. The front end of the suction hose is sleeved with the front cylinder. The suction hose passes through the rear ring. The wall of the telescopic pipe has a first positioning port, a second positioning port, a third positioning port, and a fourth positioning port. The rear ring extends forward with a first extension arm and a second extension arm. The front cylinder extends backward with a third extension arm and a fourth extension arm. The first extension arm has a first protrusion limited to the first positioning port. The second extension arm has a second protrusion limited to the second positioning port. The third extension arm has a third protrusion limited to the third positioning port. The fourth extension arm has a fourth protrusion limited to the fourth positioning port.

17. The power tool according to claim 16, characterized in that: The rear end ring is also provided with a first boss, a second boss, a first arc-shaped portion, and a second arc-shaped portion. A first extension arm extends forward from the first boss into the telescopic tube, and a second extension arm extends forward from the second boss into the telescopic tube. The first arc-shaped portion and the second arc-shaped portion are respectively connected between the first boss and the second boss. The first boss, the first arc-shaped portion, the second boss, and the second arc-shaped portion are connected together to form a ring. The front end cylinder is also provided with a third boss and a fourth boss. A third extension arm extends backward from the third boss into the telescopic tube, and a fourth extension arm extends backward from the fourth boss into the telescopic tube.

18. The power tool according to claim 17, characterized in that: The first positioning port, the second positioning port, the third positioning port, and the fourth positioning port are openings that penetrate the wall of the telescopic pipe. The first positioning port and the second positioning port are opposite each other in the radial direction of the telescopic pipe, and the third positioning port and the fourth positioning port are opposite each other in the radial direction of the telescopic pipe. The first extension arm, the second extension arm, the third extension arm, and the fourth extension arm are located on the periphery of the suction hose. The first protrusion enters the first positioning port from inside the telescopic pipe, the second protrusion enters the second positioning port from inside the telescopic pipe, the third protrusion enters the third positioning port from inside the telescopic pipe, and the fourth protrusion enters the fourth positioning port from inside the telescopic pipe.

19. The power tool according to claim 1, characterized in that: It also includes a scale, a rear end ring installed at the rear end of the telescopic tube, and a front end cylinder installed at the front end of the telescopic tube. The rear end ring is also provided with a third groove that is recessed backward, and the front end cylinder is also provided with a fourth groove that is recessed forward. The scale is located between the rear end ring and the front end cylinder. The rear end of the scale extends into the third groove, and the front end of the scale extends into the fourth groove.

20. The power tool according to claim 19, characterized in that: The rear end ring is also provided with a first boss, a second boss, a first arc-shaped portion, and a second arc-shaped portion. The first arc-shaped portion and the second arc-shaped portion are respectively connected between the first boss and the second boss. The front end cylinder is also provided with a third boss, a fourth boss, a third arc-shaped portion, and a fourth arc-shaped portion. The third arc-shaped portion and the fourth arc-shaped portion are respectively connected between the third boss and the fourth boss. A third groove is provided in the first arc-shaped portion. The third groove is formed by recessing from the front side of the first arc-shaped portion to the rear. A fourth groove is provided in the third arc-shaped portion. The fourth groove is formed by recessing from the rear side of the third arc-shaped portion to the front. The scale is limited between the first arc-shaped portion and the third arc-shaped portion.

21. The power tool according to claim 1, characterized in that: The power tool is a vacuum cleaner. The power tool also includes a body, a rear ring installed at the rear end of the telescopic tube, and a motor located inside the body. The telescopic tube can extend outward and retract inward along its length. The rear ring is provided with a guide groove, and the body is provided with a guide rib. The guide rib is partially embedded in the guide groove. During the process of the telescopic tube retracting into the body, the rear ring moves backward along the guide rib through the guide groove.

22. The power tool according to claim 21, characterized in that: The rear end ring is also provided with a first boss, and a guide groove is recessed in the first boss and extends through the front and rear sides of the first boss.

23. The power tool according to claim 22, characterized in that: The rear end ring is also provided with a second protrusion, a first extension arm, and a second extension arm. The first extension arm extends forward from the first protrusion into the telescopic tube, and the second extension arm extends forward from the second protrusion into the telescopic tube.

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