Electric tool

Abstract

The utility model relates to an electric tool which comprises a machine shell, a motor assembly installed in the machine shell, an output end driven by the motor assembly, a switch assembly controlling starting and stopping of the motor assembly and a controller assembly connected to the switch assembly. The electric tool is characterized in that the electric tool comprises a lighting assembly installed on the machine shell and an electric wire connected between the lighting assembly and the controller assembly, the lighting assembly and the controller assembly are located on the two sides of the motor assembly, and the switch assembly is located between the motor assembly and the controller assembly. The electric wire is led out from the lighting assembly, extends to pass through the motor assembly and the switch assembly and is connected to the controller assembly. The electric tool provided by the utility model is beneficial to improving the experience feeling and the comfort degree of a user for operating the tool.

Description

Technical Field

[0001] This utility model relates to the field of power tools, and in particular to a power tool used in decoration, construction and other occasions. Background Technology

[0002] Power tools typically include a housing, a motor located within the housing, a main control switch housed in the housing and controlling the motor's start and stop, and a controller connected to a power source and sending control commands to the motor. The housing includes a grip section, on which an operating switch for triggering the main control switch and activating the motor is mounted. This allows the user to easily access the operating switch while gripping the grip section, facilitating the operation of the power tool.

[0003] In direct-drive or angle-drive power tools, the motor, main control switch, and controller are typically arranged sequentially along the extension of the housing, with the operating switch located radially outward from the motor. Furthermore, to meet user operational needs, the grip area of ​​the housing should be as slim as possible, resulting in a very tight space between the operating switch and the motor. If wires connecting various components within the housing are placed in this space, interference can easily occur when the user actuates the operating switch, leading to wire damage and machine malfunction.

[0004] Therefore, it is indeed necessary to provide an improved power tool to overcome the shortcomings of the existing technology. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an ergonomic power tool to improve or enhance the user's experience and comfort when operating the tool.

[0006] The present invention solves the existing technical problems by adopting the following technical solution: an electric tool, including a housing, a motor assembly installed in the housing, an output terminal driven by the motor assembly, a switch assembly for controlling the start and stop of the motor assembly, and a controller assembly connected to the switch assembly. The electric tool includes a lighting assembly installed in the housing and a wire connected between the lighting assembly and the controller assembly. The lighting assembly and the controller assembly are located on both sides of the motor assembly, and the switch assembly is located between the motor assembly and the controller assembly. The wire extends from the lighting assembly, passes through the motor assembly and the switch assembly, and connects to the controller assembly.

[0007] A further improvement is that the switching assembly includes a switching element electrically connected to the motor assembly and a switching trigger for triggering the switching element, wherein the switching trigger is at least partially exposed in the first housing.

[0008] A further improvement is that the lighting component and the switch trigger are located on the same side of the axis of the motor component.

[0009] A further improvement is as follows: the switch trigger includes a pivot connected to the housing and pivoting relative to the housing, and a trigger body extending from the pivot toward the second end, the trigger body being located between the controller assembly and the lighting assembly.

[0010] A further improvement is that at least a portion of the wire extends between the motor assembly and the trigger body, and the housing includes a first wire-holding groove and a second wire-holding groove for holding the wire, the first wire-holding groove and the second wire-holding groove being located on both sides of the motor assembly.

[0011] A further improvement is as follows: the first wire-locking groove is located adjacent to the rotating shaft, and the second wire-locking groove is located between the motor assembly and the switching element.

[0012] A further improvement is as follows: the trigger body includes a bottom wall for user operation, a pair of side walls extending from both sides of the bottom wall toward the motor assembly, and a clearance space formed by the bottom wall and the pair of side walls, wherein at least a portion of the wire is housed within the clearance space.

[0013] A further improvement is as follows: the trigger body includes a reinforcing rib protruding from the bottom wall and a clearance groove defined by the reinforcing rib, the clearance groove being connected to the clearance space.

[0014] A further improvement is as follows: the power tool includes a transmission assembly connected between the motor assembly and the output end, the lighting assembly is located on the front side of the transmission assembly, and at least a portion of the wires extend between the transmission assembly and the inner wall of the housing.

[0015] A further improvement is as follows: the lighting assembly includes a lamp connected to the controller assembly and a lampshade that shields the lamp. The lampshade is installed at the front end of the housing and has a light guide surface that allows light from the lamp to pass through. The angle between the light guide surface and the axis of the motor assembly is between 35 degrees and 60 degrees.

[0016] Compared with the prior art, this utility model has the following advantages: the wire is led out from the lighting component, extends through the motor component and the switch component to connect to the controller component. During this process, the wire is clamped and fixed by the first and second wire clamping grooves, effectively preventing the wire from coming loose and ensuring the stable operation of the tool; a clearance space is formed on the trigger body, which can accommodate the wire when the trigger is closed, further reducing the damage to the wire caused by the trigger; the angle C between the light guide surface of the lighting component and the axis of the motor component is set between 35 degrees and 60 degrees, so that the lighting component has a better lighting effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the power tool according to a preferred embodiment of the present invention;

[0018] Figure 2 yes Figure 1 An exploded view of the power tool shown.

[0019] Figure 3 yes Figure 1 The diagram shows the internal structure of the power tool.

[0020] Figure 4 yes Figure 1 A sectional view of the power tool shown.

[0021] Figure 5 yes Figure 2 An enlarged view of circle D shown;

[0022] Figure 6 yes Figure 1 A schematic diagram showing a power tool with a battery pack placed on a flat surface;

[0023] Figure 7 yes Figure 6 The diagram shows a power tool with the anti-locking switch not unlocked.

[0024] Figure 8 yes Figure 7 The diagram shows the unlocking of the anti-locking switch in the power tool shown.

[0025] Figure 9 yes Figure 6 The diagram shows the wiring layout of the power tool.

[0026] Figure 10 This is a schematic diagram of another anti-locking switch of the power tool of this utility model that is not unlocked;

[0027] Figure 11 yes Figure 9 The diagram shows the unlocking of the anti-locking switch in the power tool shown.

[0028] Figure 12 yes Figure 6 The diagram shows the switch trigger of the power tool. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0030] The terminology used in this invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," "rear," "left," and "right," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0031] Please see Figures 1 to 4 As shown, this utility model relates to an electric tool 100, and more particularly to a grinder, which is suitable for polishing and grinding workpiece surfaces. In this embodiment, the electric tool 100 is powered by a battery pack 200, which is detachably installed in the electric tool 100. The electric tool 100 includes a housing 1, a motor assembly 2 installed in the housing 1, a transmission assembly 3 connected to the front end of the motor assembly 2, an output end 4 connected to the transmission assembly 3, a switch assembly 5 for controlling the start and stop of the motor assembly 2, and a controller assembly 6 connected to the switch assembly 5. The user starts the motor assembly 2 to rotate by triggering the switch assembly 5. The motor assembly 2 drives the output end 4 to rotate via the transmission assembly 3. Furthermore, the housing 1 includes a first end and a second end, with the output end 4 located at the first end and the battery pack 200 located at the second end. The output end 4 is a chuck assembly. By installing an accessory (not shown) into the chuck assembly, operation can be performed.

[0032] In this embodiment, the transmission assembly 3 has a planetary gear reduction mechanism 31, and the transmission assembly 3 is configured to convert the high-speed, low-torque force of the motor assembly 2 into a low-speed, high-torque force to meet the user's work requirements.

[0033] In this embodiment, the aforementioned housing 1 includes a first housing 11 housing the motor assembly 2, a second housing 12 housing the transmission assembly 3, and a mounting base 13 for mounting the battery pack 200. The second housing 12 and the mounting base 13 are located on the front and rear sides of the first housing 11, respectively; that is, the first housing 11 is closer to the first end of the housing 1, and the mounting base 13 is closer to the second end of the housing 1. Furthermore, the housing 1 extends along the front-rear direction as a whole, and the output end 4, the transmission assembly 3, and the motor assembly 2 are arranged sequentially along the front-rear direction within the housing 1. Further, the second housing 12 is located at the front, and the output end 4 extends beyond the end of the second housing 12; the first housing 11 is located in the middle, and the first housing 11 forms a handle portion 14 for the user to hold; while the mounting base 13 is located at the rear, and the mounting base 13 is arranged obliquely relative to the extending direction of the second housing 12 and protrudes along the vertical direction perpendicular to the front-rear direction.

[0034] Please see Figure 3 and Figure 4 As shown, the mounting base 13 has a insertion slot 131 for inserting the battery pack 200 and an inclined surface 132 extending obliquely from the rear end of the first housing 11 relative to the axis A of the motor assembly 2. The insertion slot 131 and the inclined surface 132 are located on opposite sides of the mounting base 13. The angle B formed by the insertion slot 131 and the axis A of the motor assembly 2 is less than 90 degrees, so that when the battery pack 200 is installed on the power tool 100, the battery pack 200 is arranged obliquely relative to the axis A of the motor assembly 2, and the height occupied by the battery pack 200 in the vertical direction is reduced. Therefore, when the user operates the power tool 100, the battery pack 200 is less likely to interfere with the user's arm, greatly improving the user's experience and comfort. Furthermore, by setting the end face of the mounting base 13 near the handle portion 14 as an inclined surface 132, and the transition between the inclined surface 132 and the first housing 11 by an arc, the height occupied by the mounting base 13 in the vertical direction is reduced, which also makes it less likely for the mounting base 13 to interfere with the user's arm, making the user's operation more comfortable and more in line with ergonomics.

[0035] Preferably, the angle B formed by the aforementioned insertion slot 131 and the axis A of the motor assembly 2 is 50 to 70 degrees, further reducing the height occupied by the battery pack 200 in the vertical direction; in extreme or confined working environments, the battery pack 200 will not interfere with the user, further expanding the usage scenarios of the power tool 100 and improving its adaptability and operability.

[0036] Preferably, the angle B formed by the aforementioned insertion slot 131 and the axis A of the motor assembly 2 is 60 degrees, so that the overall center of gravity of the power tool 100 and the battery pack 200 is located in the grip area when the user operates, which is comfortable, conducive to long-term operation, reduces user fatigue, and improves human-computer interaction.

[0037] In this embodiment, the axis A of the motor assembly 2 extends through the transmission assembly 3 and the output end 4; furthermore, the center lines of the output end 4, the transmission assembly 3 and the motor assembly 2 are located on the same central axis; furthermore, the center lines of the output end 4, the transmission assembly 3 and the motor assembly 2 are all located on the axis A of the motor assembly 2, so as to make the power tool look more aesthetically pleasing.

[0038] In this embodiment, the diameter of the handle portion 14 is smaller than the diameter of the second housing 12, and the diameter of the handle portion 14 is 120mm to 180mm, which makes it more comfortable for the user to hold.

[0039] Please see Figure 2 and Figure 4 As shown, the switch assembly 5 is installed inside the first housing 11, and the switch assembly 5 includes a switch element 51 electrically connected to the motor assembly 2 and a switch trigger 52 that triggers the switch element 51. The switch element 51 is located between the controller assembly 6 and the motor assembly 2, and the switch trigger 52 is at least partially exposed outside the first housing 11 for operation by the user.

[0040] In this embodiment, the switch element 51 is the main circuit switch, and the switch trigger 52 is a long lever type trigger. The end of the switch trigger 52 is pivotally mounted to the housing 1. The user starts the motor assembly 2 by pressing the switch trigger 52.

[0041] Preferably, the mounting base 13 has a protrusion 131a extending toward the switch trigger 52, that is, the protrusion 131a is the lowermost end of the mounting base 13 and is closer to the first end of the power tool 100 than the distal end 131c of the mounting base, wherein the distal end 131c of the mounting base is the uppermost end of the mounting base 13; see also Figure 6As shown, the battery pack 200 has a first end 200a and a second end 200b. The first end 200a is closer to the output end 4 than the second end 200b. The first end 200a abuts against the protrusion 131a. Additionally, the second housing 12 has a protrusion 12a located below the transmission assembly. When the power tool 100 is equipped with the battery pack 200 and placed on a flat surface P, the first end 200a and the second protrusion 12a... Together, they can support the power tool 100 and prevent it from tipping over. Furthermore, a receiving area 131b is formed between the first end 200a and the protrusion 12a. Specifically, the receiving area 131b is surrounded by the battery pack 200, the mounting base 13, the first housing 11 and the second housing 12, and is located at the lower end of the axis A of the motor assembly 2. The switch trigger 52 is completely housed in the receiving area 131b. In addition, the switch assembly 5 also includes a self-locking switch 53. The distance from the first end 200a to the axis A of the motor assembly 2 should be greater than the distance from the bottom of the self-locking switch 53 to the axis A of the motor assembly 2. This ensures that when the power tool 100 is placed on a flat surface P, the self-locking switch 53 will not touch the flat surface P and cause accidental activation.

[0042] For a user to successfully activate the switch element 51, the anti-locking switch 53 must first be unlocked. That is, a connecting part 50 is formed inside the housing 1. The connecting part 50 includes a connecting surface 501 that contacts the anti-locking switch 53. The anti-locking switch 53 can slide along the connecting surface 501 to unlock.

[0043] In this embodiment, the upper joint 50 can be configured as follows: Figure 7 The structure includes a connecting part 50 comprising a connecting part protrusion 50a and a connecting part body 50b. The lower surface of the connecting part body 50b forms a connecting surface 501a. When the anti-locking switch 53 is not rotated, the connecting arm 532 of the anti-locking switch 53 abuts against the connecting part protrusion 50a. At this time, the anti-locking switch 53 restricts the pivoting of the switch trigger 52. When the anti-locking switch 53 rotates, the connecting arm 532 slides on the connecting surface 501a.

[0044] Please refer to Figure 10 and Figure 11 This utility model also provides another anti-locking switch structure. Specifically, the switch trigger 52 includes a rotating shaft 521 connected to and pivoting relative to the housing 1, and a trigger body 522 extending from the rotating shaft 521. The rotating shaft 521 is located near a first end of the housing 1, or near a second end of the housing 1. The anti-locking switch 53 is located on the side of the trigger body 522 away from the rotating shaft 521. The trigger body 522 has a through opening 5221, and the anti-locking switch 53 is at least partially received in the opening 5221 and moves within the opening 5221.

[0045] The anti-locking switch 53 includes a pivot shaft 531, a connecting arm 532 extending from the pivot shaft 531 toward the joint 50, and an operating part 533 extending from the pivot shaft 531 away from the joint 50. The connecting arm 532 contacts the joint surface 501. The trigger body 522 has a through hole 5222 on the side wall of the opening 5221, and the pivot shaft 531 is mounted in the opening 5222.

[0046] The unlocking process of the anti-locking switch is described below. The anti-locking switch 53 has a first position that restricts the movement of the switch trigger 52 relative to the switching element 51 and a second position that does not restrict the movement of the switch trigger 52 relative to the switching element 51. That is, the connecting arm 532 contacts the mating surface 501 through the connection point 5321 to slide. In the first position, due to the reverse support force of the mating surface 501 on the connecting arm 532, the user cannot press down the switch trigger 52. In this position, the connection point 5321 is in contact with the pivot shaft 531. The angle formed by the line connecting the center of the connecting point 5321 and the center of the pivot shaft 531 with the mating surface 501 is 90 degrees. When the connecting arm 532 slides to the second position, the user can press down the switch trigger 52 to turn on the switch element 51. In this position, the angle formed by the line connecting the center of the connecting point 5321 and the center of the pivot shaft 531 with the mating surface 501 is 75 degrees. That is, when the connecting arm 532 slides from the first position to the second position, the angle formed by the line connecting the center of the connecting point 5321 and the center of the pivot shaft 531 with the mating surface 501 decreases from 90 degrees to 75 degrees. Through the above sliding trigger, the anti-locking switch 53 will not be stuck by the housing 1, so that the switch trigger 52 can be pressed all the way down, avoiding the user having to perform a secondary operation on the switch trigger 52.

[0047] The joint 50 can be configured as a structure with a completely triangular cross section. This structure allows the anti-locking switch 53 to contact the joint surface 501 throughout the entire operation process, thus providing a better user experience.

[0048] Furthermore, the switch trigger 52 includes a latching portion 523 extending from the end of the trigger body 522 away from the pivot 521. The housing 1 includes a latching arm 17 that engages with the latching portion 523 and a dustproof portion 18 connecting the connecting portion 50 and the latching arm 17. The connecting portion 50, the latching arm 17, and the dustproof portion 18 are integrally constructed. Further, at least a portion of the connecting portion 50 extends between the anti-locking switch 53 and the latching portion 523, thereby allowing the anti-locking switch 53 and the connecting portion 50 to contact each other. Further, the dustproof portion 18 forms a space for the latching portion 523 to move, ensuring the normal operation of the switch trigger 52. Further, the engagement between the latching portion 523 and the latching arm 17, and the provision of the dustproof portion 18, effectively prevent external dust from entering the interior of the housing.

[0049] In this embodiment, the controller assembly 6 is housed in the mounting base 13, and the controller assembly 6 is arranged at an angle relative to the axis A of the motor assembly 2, with the axis A of the motor assembly 2 extending through the controller assembly 6.

[0050] Please combine Figure 2 and Figure 5 As shown, the power tool 100 includes wires 8 connected between the motor assembly 2, the switch assembly 5, and the controller assembly 6. The switch element 51 has a through wiring channel 511 through which at least a portion of the wires 8 pass. Due to the large number of wires 8, the wiring channel 511 makes the arrangement of the wires 8 neater and facilitates wiring.

[0051] Please see Figure 2 and Figure 4 As shown, the motor assembly 2 includes a stator 21 and a rotor 22 connected to each other, a fan 23 driven by the rotor 22, and a first bearing 24 and a second bearing 25 supported on the front and rear sides of the rotor shaft 221 of the rotor 22; wherein the first bearing 24 is located in the first housing 11 and the second bearing 25 is located in the second housing 12.

[0052] Furthermore, the stator 21 and fan 23 are located between the first bearing 24 and the second bearing 25, and the rotor shaft 221 extends into the second housing 12 and is connected to the transmission assembly 3.

[0053] In this embodiment, the fan 23 is located between the stator 21 and the transmission assembly 3. The housing 1 has a through air inlet 15 and an air outlet 16. The air inlet 15 is located on the mounting base 13 and adjacent to the controller assembly 6, while the air outlet 16 is located adjacent to the fan 23. The fan 23 is a centrifugal fan. While the motor assembly 2 drives the output end 4 to rotate, it also drives the fan 23 to rotate at high speed, thereby generating a cooling airflow that flows in from the air inlet 15 and is discharged from the air outlet 16. The cooling airflow flows sequentially through the controller assembly 6, the switch assembly 5, and the motor assembly 2 to efficiently dissipate heat from the controller assembly 6, the switch assembly 5, and the motor assembly 2.

[0054] In this embodiment, the motor assembly 2 is a brushless DC motor, and the motor assembly 2 also includes a Hall plate 28 that is fixedly mounted to the stator 21 by screws. The Hall plate 28 is electrically connected to the controller assembly 6.

[0055] Please see Figures 2 to 4As shown, the transmission assembly 3 includes a shift wire 32 connected to the planetary gear reduction mechanism 31 and a shift knob 33 for moving the shift wire 32. The shift knob 33 is exposed on the second housing 12 for user operation, and the shift knob 33 is configured to change the transmission ratio of the planetary gear reduction mechanism 31. In order not to affect the user's operation of the switch trigger 52, the shift knob 33 and the switch trigger 52 are located on the upper and lower sides of the transmission assembly 3.

[0056] In this embodiment, the transmission component 3 can switch between two gears: a high-speed gear (first gear) and a low-speed gear (second gear). In the high-speed gear, the power tool 100 is used for grinding operations, at which time the transmission ratio is 1:5 and the output speed is 2700 rpm to 3300 rpm. In the low-speed gear, the power tool 100 is used for drilling operations, at which time the transmission ratio is 1:15 and the output speed is 900 rpm to 1100 rpm.

[0057] Preferably, in the high-speed mode, the output speed of the power tool 100 is 3000 rpm; in the low-speed mode, the output speed of the power tool 100 is 1000 rpm.

[0058] Please see Figure 4 , Figures 7 to 9 as well as Figure 12 As shown, the power tool 100 also includes a lighting assembly 7 mounted on the front end of the second housing 12, i.e., the lighting element 7 is located at the first end of the housing 1 and adjacent to the output end 4. The lighting assembly 7 is connected to the controller assembly 6 via a wire 8. The motor assembly 2 is located between the lighting assembly 7 and the controller assembly 6, i.e., the wire 8 extends from the lighting assembly 7, passes through the motor assembly 2 and the switch assembly 5, and connects to the controller assembly 6.

[0059] Next, the wiring of the lighting assembly 7 will be described. The wire 8 leading from the lighting assembly 7 first extends between the transmission assembly 3 and the inner wall of the housing 1. In this area, the shift knob 33 and the wire 8 are located on both sides of the transmission assembly 3. Subsequently, since the trigger body 522 is located between the controller assembly 6 and the lighting assembly 7, and the lighting assembly 7 and the trigger body 522 are located on the same side of axis A of the motor assembly 2, the wire 8 needs to extend between the motor assembly 2 and the trigger body 522.

[0060] Furthermore, the wires at the motor assembly 2 are secured by the first wire-locking groove 101 and the second wire-locking groove 102. The first wire-locking groove 101 and the second wire-locking groove 102 are located on both sides of the motor assembly 2. Specifically, the first wire-locking groove 101 is located adjacent to the rotating shaft 521, and the second wire-locking groove 102 is located between the motor assembly 2 and the switching element 51. When the switch trigger 52 is not pressed down, the wires 8 will not fall down under the action of the first wire-locking groove 101 and the second wire-locking groove 102.

[0061] Transfer to Figure 12 The trigger body 522 includes a bottom wall 5223 for user operation, a pair of side walls 5224 extending from both sides of the bottom wall 5223 toward the motor assembly 2, and a clearance space 5228 formed by the bottom wall 5223 and the pair of side walls 5224. When the switch trigger 52 is pressed down, at least a portion of the wire 8 is housed within the clearance space 5228, effectively preventing damage to the wire 8 by the switch trigger 52. Furthermore, the trigger body 522 includes a reinforcing rib 5225 protruding from the bottom wall 5223 and a clearance groove 5226 defined by the reinforcing rib 5225. The clearance groove 5226 communicates with the clearance space 5228, and the clearance groove 5226 further expands the storage space for the wire 8.

[0062] After the wire 8 leaves the area where the motor assembly 2 is located, the wire 8 passes through the switch element 51. At this time, part of the wire 8 is arranged on the side of the switch element 51. This arrangement prevents the trigger button on the lower side of the switch element from damaging the wire.

[0063] Furthermore, the lighting assembly 7 in this embodiment includes a lamp 71 connected to the controller assembly 6 and a lampshade 72 that shields the lamp 71. The lamp 71 is powered by the battery pack 200 and is configured to illuminate the work area in a dim environment. The lampshade 72 is mounted on the front end of the second housing 12 and has a light guide surface 711 through which the light from the lamp 71 passes. The angle C between the light guide surface 711 and the axis A of the motor assembly 2 is between 35 degrees and 60 degrees, so that the lighting assembly 7 has a better lighting effect.

[0064] Preferably, the angle C between the light guide surface 711 and the axis A of the motor assembly 2 is between 40 degrees and 60 degrees.

[0065] In this embodiment, after the wire 8 leaves the area where the switching element 51 is located, it is finally connected to the controller assembly 6. The controller assembly 6 includes a controller base plate 61 and a capacitor 62 mounted on the controller base plate 61. The controller base plate 61 and the motor assembly 2 sandwich the handle portion 14 in the middle. The controller base plate 61 is used to send control commands to the operation of the motor assembly 2. The capacitor 62 makes the DC power output smooth and stable, reducing the impact of alternating pulsating current on the electronic circuit. Specifically, the axis A of the motor assembly 2 passes through the controller base plate 61 and the capacitor 62. The controller base plate 61 is arranged at an angle relative to the axis A of the motor assembly 2. Since the battery pack 200 is inserted into the mounting base 13 through the insertion slot 131, in order to ensure the compactness of the housing 1 in the vertical direction, the insertion slot 131 should be parallel to the extension direction of the controller base plate 61.

[0066] In addition, since the wire 8 passes through the capacitor 62 when it is connected to the controller board 61, in order to reduce the interference of the capacitor 62 to the wire 8, the capacitor 62 can be set perpendicular to the controller board 61 and can be made to protrude into the first housing 11. Based on this, the capacitor 62 is arranged at an angle of 20 degrees to 40 degrees relative to the axis A of the motor assembly 2, preferably 30 degrees.

[0067] This invention sets the angle B between the plug slot 131 and the axis A of the motor assembly 2 to less than 90 degrees, so that when the battery pack 200 is installed on the power tool 100, the battery pack 200 is inclined relative to the axis A of the motor assembly 2, and the height occupied by the battery pack 200 in the vertical direction is reduced. Therefore, when the user operates the power tool 100, the battery pack 200 is less likely to interfere with the user's arm, greatly improving the user's experience and comfort. Furthermore, setting the end face of the mounting base 13 near the handle portion 14 as an inclined surface 132 further reduces the height occupied by the mounting base 13 in the vertical direction, making it less likely to interfere with the user's arm, resulting in more comfortable operation and better ergonomics. The switching element 51 has a through wiring channel 511, through which at least some of the wires 8 pass. Since there are many wires 8, the wiring channel 511 makes the arrangement of the wires 8 neater and facilitates wiring. In addition, the angle C between the light guide surface 711 and the axis A of the motor assembly 2 is between 35 degrees and 60 degrees, so that the lighting assembly 7 has a better lighting effect.

[0068] Furthermore, the power tool 100 of this invention can be used to repair tires, particularly to grind the inner surface of the tire. Specifically, the inner surface of the tire is cylindrical. When the power tool 100 grinds the inner surface of the tire, the axis A of the motor assembly 2 and the tire define a chord, and during the repair process of the power tool 100, the axis A of the motor assembly 2 is parallel to this chord. In addition, the battery pack 200 is inserted into the mounting base 13 at an angle relative to the axis A of the motor assembly 2, which reduces the contact between the battery pack 200 and the inner surface of the tire when the power tool 100 repairs the tire.

[0069] This utility model is not limited to the specific embodiments described above. Those skilled in the art will readily understand that many other alternative solutions exist for the power tool of this utility model without departing from the principles and scope of this utility model. The scope of protection of this utility model is determined by the claims.

Claims

1. A power tool, comprising a housing, a motor assembly mounted within the housing, an output terminal driven by the motor assembly, a switch assembly for controlling the start and stop of the motor assembly, and a controller assembly connected to the switch assembly; characterized in that: The power tool includes a lighting assembly mounted on the housing and a wire connecting the lighting assembly and the controller assembly. The lighting assembly and the controller assembly are located on opposite sides of the motor assembly, and the switch assembly is located between the motor assembly and the controller assembly. The wire extends from the lighting assembly, passes through the motor assembly and the switch assembly, and connects to the controller assembly.

2. The power tool according to claim 1, characterized in that: The switching assembly includes a switching element electrically connected to the motor assembly and a switching trigger for actuating the switching element, the housing including a first housing, the switching trigger being at least partially exposed in the first housing.

3. The power tool according to claim 2, characterized in that: The lighting assembly and the switch trigger are located on the same side of the axis of the motor assembly.

4. The power tool according to claim 2, characterized in that: The housing includes a first end and a second end opposite to each other, and the switch trigger includes a pivot connected to the housing and pivoting relative to the housing, and a trigger body extending from the pivot toward the second end, the trigger body being located between the controller assembly and the lighting assembly.

5. The power tool according to claim 4, characterized in that: At least a portion of the wire extends between the motor assembly and the trigger body, and the housing includes a first wire-holding groove and a second wire-holding groove for holding the wire, the first wire-holding groove and the second wire-holding groove being located on both sides of the motor assembly.

6. The power tool according to claim 5, characterized in that: The first wire-locking groove is located adjacent to the rotating shaft, and the second wire-locking groove is located between the motor assembly and the switching element.

7. The power tool according to claim 5 or 6, characterized in that: The trigger body includes a bottom wall for user operation, a pair of side walls extending from both sides of the bottom wall toward the motor assembly, and a clearance space formed by the bottom wall and the pair of side walls, wherein at least a portion of the wire is housed within the clearance space.

8. The power tool according to claim 7, characterized in that: The trigger body includes a reinforcing rib protruding from the bottom wall and a clearance groove defined by the reinforcing rib, the clearance groove being connected to the clearance space.

9. The power tool according to claim 1, characterized in that: The power tool includes a transmission assembly connected between the motor assembly and the output end, the lighting assembly being located in front of the transmission assembly, and at least a portion of the wires extending between the transmission assembly and the inner wall of the housing.

10. The power tool according to claim 1, characterized in that: The lighting assembly includes a lamp connected to the controller assembly and a lampshade that shields the lamp. The lampshade is mounted on the front end of the housing and has a light guide surface through which light from the lamp can pass. The angle between the light guide surface and the axis of the motor assembly is between 35 degrees and 60 degrees.

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