WO2022001199A1

WO2022001199A1 - Electric tool housing and electric tool

Info

Publication number: WO2022001199A1
Application number: PCT/CN2021/081439
Authority: WO
Inventors: 杨远作; 余仁田; 柯亨钊; 戴建红
Original assignee: 浙江动一新能源动力科技股份有限公司
Priority date: 2020-06-30
Filing date: 2021-03-18
Publication date: 2022-01-06
Also published as: CN111791194A

Abstract

Provided are an electric tool housing and an electric tool. The housing comprises: at least one first housing element (11) arranged on the upper end of a drive system unit (20) and part of a handle (30), and at least one second housing element (12) arranged on the lower end of the drive system unit (20) and part of the handle (30), with the first housing element (11) being connected to the second housing element (12) along a contact line (13), wherein the first housing element (11) and/or the second housing element (12) is/are provided with a first through-hole (14), and the first through-hole (14) is used for arranging an adjustment element (51) therein; and the contact line (13) is arranged away from the first through-hole (14). By means of arranging the contact line in the electric tool housing away from the adjustment element (51), the smoothness of the adjustment element (51) during shifting being insufficient as a result of a gap of the boundary in the housing becoming larger due to frequent use of the adjustment element (51) can be prevented, thereby ensuring the smooth operation of the adjustment element (51) when in use.

Description

An electric tool housing and electric tool

technical field

The invention relates to the field of electric tools, in particular to an electric tool housing and an electric tool.

Background technique

A power tool is a hand-held or movable mechanized tool that is powered by a motor or electromagnet and drives the working head through a transmission mechanism. Power tools have the characteristics of easy portability, simple operation and diverse functions, which can greatly reduce labor intensity, improve work efficiency, and realize mechanization of manual operation. Therefore, they are widely used in construction, housing decoration, automobiles, machinery, electricity, bridges, gardening and other fields. , and into the family in large numbers.

During the use of power tools, it is necessary to switch gears to achieve different speeds or functions. Usually, the button for switching gears is near the junction between the housings of the power tool. Frequent use will easily lead to a larger gap at the junction between the housings. , so that the internal components of the housing are dislocated, which causes the shift button to be not smooth enough when switching, which affects the use of the power tool.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a new type of electric tool housing, the contact line between the electric tool housings is far away from the adjusting element, which can improve the smoothness of the adjusting element in use.

In order to achieve the above objects, the present invention adopts the following technical solutions: a power tool housing, comprising: at least one first housing element arranged on the upper end of the drive train unit and part of the handle, and at least one first housing element arranged on the lower end of the drive train unit and at least one second housing element on part of the handle, the first housing element and the second housing element are connected along a contact line; wherein the first housing element and/or the second housing element The housing element is provided with a first through hole, and the first through hole is used for arranging the adjustment element; the contact line includes a first contact line parallel to the drive train unit and a second contact line parallel to the handle line, the first contact line and/or the second contact line are away from the first through hole.

Preferably, the first housing element and/or the second housing element have at least substantially no separating edges at the first through hole.

Preferably, the first contact line is provided on both sides of the power tool housing, one end of which extends to the end face close to the chuck, and the other end extends to the handle.

Preferably, an end of the second housing element close to the collet is provided with a receiving portion extending toward the first housing element, and the first housing element is sleeved along the axial direction of the receiving portion outside the receiving portion, and spliced and fixed with the second housing element.

Preferably, a guide member is provided on the receiving portion, and a dovetail slot matched with the guide member is provided on the first housing element.

Preferably, ventilation openings are provided on the first housing element and/or the second housing element.

Preferably, an end of the second housing element close to the collet is provided with a first vent, and a rear end of the first housing element is provided with a second vent.

Preferably, the power tool housing further includes an end cap, the end cap is mounted on the rear end of the first housing element, and the end cap is provided with an inlet that communicates with the second vent. tuyere.

The present invention also provides a power tool, including the power tool housing, and at least one drive train unit disposed inside the power tool housing; wherein the drive train unit includes a motor, sleeved on the power tool housing. The motor is fixed in the connecting piece, one end of the connecting piece is fixedly connected with the rear end of the first housing element, and the other end of the connecting piece is connected with the connecting piece. The housing of the transmission is fixedly connected.

Preferably, the connector is provided with a threaded hole, and the connector and the first housing element are fixedly connected by screws.

Preferably, the connector is provided with a hook, the first housing element is provided with a slot matched with the hook, and the connector and the first housing element are fixed by snapping connect.

Preferably, the power tool further comprises an end cap, the end cap is provided at one end away from the collet, and the end cap is detachably connected to the first housing element.

Preferably, the second housing element is fixedly connected to the housing of the transmission.

Preferably, the connecting piece is fixedly connected to the housing of the transmission through pins.

Preferably, the power tool further includes a speed change element, the speed change element includes an adjustment element and a rotating ring matched with the adjustment element, the rotating ring is sleeved on the transmission, and the adjustment element drives the rotation Ring rotation is used to provide switching of speed modes.

Preferably, at least one first protruding portion is provided on the lower end surface of the adjusting element, at least one second protruding portion is provided where the rotating ring and the adjusting element cooperate, and the first protruding portion is connected to the The second protruding parts are in contact with each other, and are used to drive the rotating ring to rotate when the adjusting element is toggled.

Preferably, the inner wall of the first housing element is provided with a fixing portion for mounting the adjustment element.

Preferably, the adjusting element includes a protrusion and a sliding piece, and the protrusion and the sliding piece are of a detachable structure or an integrally formed structure.

The present invention also provides a method for assembling an electric power tool, comprising: fixing the front end of the drive train unit with the second housing element; installing the adjusting element at the position of the first through hole; installing the first housing element It slides along the axis direction of the drive train unit and is fixedly connected with the drive train unit.

The present invention also provides a method for assembling a power tool, comprising: installing the adjusting element at the position of the first through hole; fixing the rear end of the drive train unit with the first housing element; and attaching the second housing element along the It slides along the axis direction of the drive train unit and is fixedly connected with the drive train unit.

Compared with the prior art, the beneficial effects of the present invention are:

In the power tool housing provided in the above technical solution, by setting the contact line between the power tool housings away from the adjusting element, it is possible to avoid the widening of the gap at the junction between the housings caused by the frequent use of the adjusting element, resulting in the electric power tool housing. The internal components of the tool are misaligned, so that the adjustment element is not smooth enough when switching gears, the stability of the connection between the housings of the electric tool is improved, and the smoothness of the adjustment element in use is guaranteed.

Further, by using connection forms such as screws or snaps, the two ends of the drive train are respectively connected to the housing, thereby realizing the fixed connection between the drive train unit and the housing.

Further, by arranging the end cap to hide the fastening element, and using the collet to hide the fastening element, there is no exposed fastening element on the appearance of the entire electric tool, which improves the aesthetics of the electric tool.

Further, by arranging connecting pieces, the drive train unit is connected as a whole, and there are multiple installation methods, which improves the convenience of connection and installation between the drive train unit and its constituent components.

Further, by arranging the guide piece and the dovetail groove, part of the housings are prevented from being lifted, and the firmness of the connection between the housings is enhanced.

Further, by arranging the ventilation port at the rear end of the power tool housing near the motor position, and the ventilation port at the front end of the power tool housing near the transmission position, it is beneficial to the heat dissipation of the internal components of the power tool, and the heat dissipation effect is good.

Further, the end caps can serve as marking elements, having a decorative effect.

Description of drawings

FIG. 1 is a schematic diagram 1 of an electric tool according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of the position of the contact line in the embodiment of the present invention.

FIG. 3 is an exploded view 1 of an electric tool according to an embodiment of the present invention.

FIG. 4 is an exploded view 2 of a power tool in an embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a drive train unit in an embodiment of the present invention.

FIG. 6 is a schematic diagram of the connection between the drive train unit and the first housing element in the embodiment of the present invention.

FIG. 7 is a schematic diagram of the connection between the drive train unit and the second housing element in the embodiment of the present invention.

FIG. 8 is a schematic structural diagram of a speed change element in an embodiment of the present invention.

FIG. 9 is a first structural schematic diagram of a fixing portion in an embodiment of the present invention.

FIG. 10 is a second structural schematic diagram of the fixing part in the embodiment of the present invention.

FIG. 11 is a schematic structural diagram of an adjustment element in an embodiment of the present invention.

FIG. 12 is a second schematic diagram of an electric tool according to an embodiment of the present invention.

FIG. 13 is a third schematic diagram of an electric tool in an embodiment of the present invention.

FIG. 14 is a schematic structural diagram of a connector in an embodiment of the present invention.

FIG. 15 is a schematic diagram of a connection relationship between a connector and a motor in an embodiment of the present invention.

FIG. 16 is a schematic diagram of the connection relationship between a connector, a motor and a transmission in an embodiment of the present invention.

11. The first housing element; 111, the dovetail slot; 112, the second vent; 113, the fixing part; 114, the third vent; 12, the second housing element; 121, the receiving part; 123, guide; 124, first vent; 13, contact line; 131, first contact line; 132, second contact line; 14, first through hole; 15, end cap; 151, air inlet; 20, drive train unit; 21, motor; 22, connecting piece; 23, transmission; 30, handle; 40, chuck; 50, shifting element; 51, adjusting element; 511, first protrusion; 513, the sliding plate; 52, the rotating ring; 521, the second raised part.

detailed description

The present invention will be described in more detail below with reference to the accompanying drawings. It should be noted that the following description of the present invention with reference to the accompanying drawings is only illustrative and not restrictive. The various embodiments may be combined with each other to form other embodiments not shown in the following description.

An embodiment of the present invention provides an electric tool housing, which is a component part of the electric tool shown in FIG. 1 . 1-4, the power tool housing includes: a first housing element 11, a second housing element 12 and an end cover 15, the first housing element 11 is provided with at least one, which is provided in the drive train unit On the upper end of the 20 and part of the handle 30, the second housing element 12 is provided with at least one, which is arranged on the lower end of the drive train unit 20 and part of the handle 30, and the upper end and the lower end are not two in the physical sense. end, but refers to the upper half and the lower half, which also includes both sides of the drive train unit 20; the end cover 15 is mounted on the rear end of the first housing element 11, and the The first housing element 11 is detachably connected. Optionally, the connection between the end cover 15 and the first housing element 11 includes a fixed connection such as screw connection and snap connection. The end cap 15 has a decorative function, and a marking feature may be formed on the end cap 15, and the marking feature may be a mark of the power tool, the name of the brand manufacturer, and a prompt for information. Optionally, the marking feature can be identified by printing, engraving, pasting, LED, OLED, display, and the like.

The first housing element 11 and the second housing element 12 are connected along a contact line 13 , the first housing element 11 and the second housing element 12 are provided with a latch along the contact line 13 The structure is used to fix the first housing element 11 and the second housing element 12 together, and a sliding groove is provided along the contact line 13 to facilitate the first housing element 11 and the second housing element 12. Mounting between two housing elements 12 . The contact line 13 includes a first contact line 131 and a second contact line 132. The first contact line 131 is provided on both sides of the power tool housing, parallel to the axis of the drive train unit 20 and approximately at the same level. Inside, the second contact line 132 is substantially parallel to the axial direction of the handle 30 . The handle has separate edges on the side facing the collet and/or on the side facing away from the collet.

The first housing element 11 and/or the second housing element 12 are provided with a first through hole 14, and the first through hole 14 is away from the first contact line 131 and/or the second The contact line 132 , that is, the edge of the first through hole 14 is not in contact with the contact line 13 , in addition, the first through hole 14 is completely disposed in the first housing element 11 or the second shell On body element 12, non-spliced construction. The first through hole 14 is used for setting the adjusting element 51, and the adjusting element 51 is used for adjusting the rotational speed and/or the forward and reverse rotation of the electric tool. By arranging the contact line 13 away from the adjusting element 51, it is possible to avoid the widening of the gap between the first housing element 11 and the second housing element 12 caused by the frequent use of the adjusting element 51, resulting in The internal components of the power tool are misaligned, so that the adjustment element 51 is not smooth enough to switch gears, which improves the stability of the connection between the first housing element 11 and the second housing element 12, and ensures the The smoothness of the adjustment element 51 in use.

The first housing element and the second housing element are joined together to form a power tool housing, the power tool housing includes a main housing for accommodating a drive train unit and a handle, and an inner area of the handle can accommodate a battery.

In one embodiment, the first contact line 131 is disposed on both sides of the power tool housing, and one end of the first contact line 131 extends to the end surface close to the collet 40 , and the other end extends to the handle 30 . A housing element 11 and/or the second housing element 12 do not have a separating edge at the first through hole 14, the first housing element 11 and/or the second housing element 12 are separated The edge is partially located on the end face facing the collet 40 . The first housing element 11 and/or the second housing element 12 have at least substantially no separating edges on the side facing away from the handle 30, as the first housing element 11 and/or the The second housing element 12 has substantially no separated edges in a plane perpendicular to the drive train unit 20, please refer to FIG. And/or the side on which the second housing element 12 is viewed has substantially no separating edges. Referring to FIG. 13 , in other embodiments, the separated edge of the first housing element 11 and/or the second housing element 12 may also be partially located between the first through hole 14 and the face facing the collet 40 between the end faces. The first housing element 11 and/or the second housing element 12 have separate edges on the surface remote from the handle 30.

As a preferred embodiment, one end of the second housing element 12 close to the collet 40 is provided with a receiving portion 121 extending toward the first housing element 11 , and the receiving portion 121 is in the shape of a hollow semi-cylindrical. Mounting slots 122 are provided at both ends. The first housing element 11 is sleeved outside the receiving portion 121 along the axial direction of the receiving portion 121 , and is spliced and fixed with the second housing element 12 . In other embodiments, the first housing element 11 may not be sleeved on the outside of the receiving portion 121 , but may be disposed on the side of the receiving portion 121 along the axial direction of the receiving portion 121 , and It is in contact with one end surface of the receiving portion 121 .

Further, the receiving portion 121 is provided with a guide member 123, the first housing element 11 is provided with a dovetail groove 111, the cross section of the guide member 123 is an inverted trapezoid, and the shape of the dovetail groove 111 is Match with the guide 123 . When the first housing element 11 is sleeved outside the receiving portion 121 along the axial direction of the receiving portion 121 , the dovetail groove 111 is clamped outside the guiding member 123 to effectively avoid the The first housing element 11 is tilted up, which improves the stability of the installation of the power tool housing.

Further, the guide member 123 and one end of the dovetail groove 111 facing the end cover 15 are both provided with a chamfer, which is convenient for installation.

The first housing element 11 and/or the second housing element 12 are provided with ventilation openings.

In one of the embodiments, the second housing element 12 is provided with a first vent 124 , specifically, the first vent 124 is provided in one of the second housing elements 12 below the collet 40 . The inclined surface is exposed to the outside of the clip 40, and the ventilation effect is better. In other embodiments, the first ventilation port 124 can also be arranged on the second housing element 12 facing the clip. The position of the head 40 makes it hidden by the collet 40, so that the surface of the power tool housing has fewer openings and is more beautiful;

Please refer to FIG. 6 , optionally, the rear end of the first housing element 11 is provided with a third vent 114 , please continue to refer to FIG. 3 , the first housing element 11 or the second housing The element 12 is provided with a second vent 112 near the first through hole 14 . Please continue to refer to FIG. 1 , the end cover 15 is provided with an air inlet 151 . The air inlet 151 communicates with the third ventilation port 114 . The connection line between the first ventilation opening 124 and the third ventilation opening 114 is substantially along the axis direction of the power train unit 20 .

In one embodiment, a ventilation opening may also be provided at the position of the power tool activation switch, when the switch is not activated, the activation switch hides the ventilation aperture, and when the activation switch is activated, the ventilation aperture is exposed.

Please continue to refer to FIGS. 1-5 , an embodiment of the present invention further provides a power tool, including the power tool housing, a drive train unit 20 and a shifting element 50 , the drive train unit 20 is provided in the power tool Inside the tool housing, at least one is provided. The drive train unit 20 includes a motor 21 , a connecting member 22 and a transmission 23 , and the connecting member 22 is sleeved outside the motor 21 .

In one of the embodiments, please refer to FIGS. 1-5 and 14-15 , the motor 21 is fixed in the connecting piece 22 , and one end of the connecting piece 22 is connected to the rear end of the first housing element 11 . The other end of the connector 22 is fixedly connected with the housing of the transmission 23 . Referring to FIG. 6 , in one of the connection methods of the connecting piece 22 and the first housing element 11 , the connecting piece 22 is provided with a threaded hole, and the connecting piece 22 and the first housing are provided with threaded holes. The body element 11 is fixedly connected by screws; please continue to refer to FIG. 4, in another connection method of the connecting piece 22 and the first housing element 11, the connecting piece 22 is provided with a hook, the The first housing element 11 is provided with a card slot matched with the hook, and the connector 22 is fixedly connected with the first housing element 11 through a snap; the end cover 15 is used to hide the The connecting parts of the connecting piece 22 and the first housing element 11 , such as hiding the screws or the snaps, avoid visible fastening elements on the surface of the power tool and ensure the appearance of the power tool. Referring to FIG. 5 , in one connection method of the connecting piece 22 and the transmission 23 , the connecting piece 22 and the housing of the transmission 23 are fixedly connected by pins, and a limit structure is provided at the connection. Specifically, the position structure can be set such that the connector 22 has a convex portion, and the housing of the transmission 23 has a concave portion that matches the shape of the convex portion, and the convex portion and the concave portion are inserted and matched to ensure the connection. The connecting piece 22 rotates synchronously with the transmission 23. In other connection modes, the connecting piece 22 and the housing of the transmission 23 can also be connected and limited by their own self-locking structure.

In other embodiments, as shown in FIG. 16 , the connecting member 22 can also fix both the motor 21 and the transmission 23 in its interior, and two ends of the connecting member 22 are respectively connected to the first shell. The body element 11 and the second housing element 12 are fixedly connected, and specific connection methods include screw connection, snap connection, and the like.

Please refer to FIGS. 3 and 7 , in one embodiment, the second housing element 12 is fixedly connected with the housing of the transmission 23 by screws, and the chuck 40 can hide the position of the screws and avoid the surface of the power tool. The presence of visible screws improves the aesthetics of the power tool.

Please refer to FIGS. 5 and 8 , the shifting element 50 includes an adjusting element 51 and a rotating ring 52 , the rotating ring 52 is sleeved outside the transmission 23 , and the adjusting element 51 drives the rotating ring 52 to rotate to provide speed mode switching. The lower end surface of the adjusting element 51 is provided with at least one first protruding portion 511 , and at least one second protruding portion 521 is provided where the rotating ring 52 cooperates with the adjusting element 51 . 511 is in contact with the second protruding portion 521 , so that when the adjusting element 51 is toggled, the adjusting element 51 can drive the rotating ring 52 to rotate. Specifically, please continue to refer to FIG. 8 , the first protruding portion 511 and the second protruding portion 521 are both set to four, and the two are a group, and the two second protruding portions 521 are respectively abutted against the two The outer side of the first protruding portion 511 enables the adjusting element 51 and the rotating ring 52 to rotate synchronously. Preferably, the opposite ends of the first protruding portion 511 and the second protruding portion 521 are provided with a chamfer, which is convenient for installation.

Referring to FIGS. 9-11 , the adjusting element 51 includes a protrusion 512 and a sliding piece 513 , and the protrusion 512 and the sliding piece 513 are detachable structures or integrally formed structures. The inner wall of the first housing element 11 is provided with a fixing portion 113 for mounting the adjusting element 51 .

In one embodiment, the protrusion 512 and the sliding piece 513 are detachable structures, which are convenient for installation. The assembly method is to insert the sliding piece 513 into the fixing portion 113 to fasten first, and then attach the protrusion 512 Put it into the first through hole 14, and connect it with the sliding piece 513, for example, by means of snapping. Please continue to refer to FIG. 10 , the shape of the fixing portion 113 is an L-shaped sheet, and there is a accommodating area between the fixing portion 113 and the inner wall of the first housing element or the second housing element, the accommodating area is The area is used for accommodating the sliding piece 513, and the fixing effect is good.

In one embodiment, the protrusion 512 and the sliding sheet 513 are integrally formed, which is simple in structure and convenient in processing. The sliding piece 513 is inserted between the fixing portion 113 and the inner wall of the housing element, and the protrusion 512 penetrates through the first through hole 14 . Please continue to refer to FIG. 9 , the fixing portion 113 is in the shape of a strip with two layers of steps, and is arranged in two. The two fixing portions 113 are equally spaced on both sides of the first through hole 14 in the axial direction. At this time, the fixing portion 113 can be appropriately deformed to ensure the smooth installation of the adjusting element 51 .

Referring to FIGS. 1-4 , 8 , and 11 , an embodiment of the present invention further provides a method for assembling a power tool, including: fixing the front end of the drive train unit 20 to the second housing element 12 ; The adjusting element 51 is installed at the position of the first through hole 14 ; the first housing element 11 is slid along the axis direction of the drive train unit 20 and is fixedly connected with the drive train unit 20 .

Referring to FIGS. 1-4 , 8 , and 11 , an embodiment of the present invention further provides a method for assembling a power tool, including: installing the adjusting element 51 at the position of the first through hole 14 ; The rear end is fixedly connected with the first housing element 11 ; the second housing element 12 is slid along the axis direction of the drive train unit 20 and fixed with the drive train unit 20 .

The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of the present invention. Scope of protection claimed.

Claims

An electric tool housing, characterized in that it includes:

At least one first housing element is arranged on the upper end of the drive train unit and part of the handle;

At least one second housing element is arranged on the lower end of the drive train unit and part of the handle, the first housing element and the second housing element are connected along a contact line; wherein,

The first housing element and/or the second housing element is provided with a first through hole, and the first through hole is used for arranging the adjustment element;

The contact lines include a first contact line parallel to the drive train unit and a second contact line parallel to the handle, the first contact line and/or the second contact line being remote from the first pass hole.
The power tool housing of claim 1, wherein the first housing element and/or the second housing element have at least substantially no separating edges at the first through hole.
The power tool housing according to claim 1, wherein the first contact wire is disposed on both sides of the power tool housing, one end of which extends to an end face close to the chuck, and the other end extends to the handle.
The power tool housing according to claim 3, wherein an end of the second housing element close to the collet is provided with a receiving portion extending toward the first housing element, and the first housing The body element is sleeved outside the receiving portion along the axis direction of the receiving portion, and is spliced and fixed with the second housing element.
The power tool housing according to claim 4, wherein a guide member is provided on the receiving portion, and a dovetail groove is provided on the first housing element for matching with the guide member.
The power tool housing according to claim 1, wherein a ventilation opening is provided on the first housing element and/or the second housing element.
The power tool housing according to claim 6, wherein the end of the second housing element close to the collet is provided with a first vent, and the rear end of the first housing element is provided with a first vent. Second vent.
The power tool housing according to claim 7, wherein the power tool housing further comprises an end cap, the end cap is mounted on the rear end of the first housing element, and the end cap is on the end cap. An air inlet communicated with the second air outlet is provided.
A power tool, characterized by comprising the power tool housing according to any one of claims 1 to 8, and further comprising at least one drive train unit arranged inside the power tool housing; wherein,

The drive train unit includes a motor, a connector sleeved outside the motor, and a transmission;

The motor is fixed in the connecting piece, one end of the connecting piece is fixedly connected with the rear end of the first housing element, and the other end of the connecting piece is fixedly connected with the housing of the transmission.
The power tool according to claim 9, wherein the connecting piece is provided with a threaded hole, and the connecting piece and the first housing element are fixedly connected by screws.
The power tool according to claim 9, wherein a hook is provided on the connector, a slot matched with the hook is provided on the first housing element, and the connector is connected with the hook. The first housing elements are fixedly connected by snaps.
The power tool according to claim 10 or 11, wherein the power tool further comprises an end cap, the end cap is provided at one end away from the collet, the end cap and the first housing element can be connected Remove the connection.
9. The power tool of claim 9, wherein the second housing element is fixedly connected to the housing of the transmission.
The power tool according to claim 9, wherein the connecting member is fixedly connected with the housing of the transmission through a pin.
The power tool according to claim 9, wherein the power tool further comprises a speed change element, the speed change element comprises an adjustment element and a rotating ring matched with the adjustment element, the rotating ring is sleeved on the In the transmission, the adjusting element drives the rotating ring to rotate for providing speed mode switching.
The power tool according to claim 15, wherein at least one first protrusion is provided on the lower end surface of the adjusting element, and at least one second protrusion is provided where the rotating ring and the adjusting element cooperate. The first raised portion is in contact with the second raised portion, and is used to drive the rotating ring to rotate when the adjusting element is toggled.
The power tool according to claim 16, wherein the inner wall of the first housing element is provided with a fixing portion for installing the adjusting element.
The power tool according to claim 17, wherein the adjusting element comprises a protrusion and a sliding piece, and the protrusion and the sliding piece are a detachable structure or an integrally formed structure.
A method of assembling a power tool, comprising:

fixing the front end of the drive train unit to the second housing element;

Install the adjusting element to the position of the first through hole;

The first housing element is slid along the axis of the drive train unit and is fixedly connected to the drive train unit.
A method of assembling a power tool, comprising:

Install the adjusting element to the position of the first through hole;

fixedly connecting the rear end of the drive train unit with the first housing element;

The second housing element is slid along the axis of the drive train unit and is fixedly connected to the drive train unit.