CN117943613A

CN117943613A - Electric tool and circular saw

Info

Publication number: CN117943613A
Application number: CN202211297986.4A
Authority: CN
Inventors: 邱雪峰; 王少君
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2024-04-30

Abstract

The application relates to the technical field of tools, and discloses an electric tool and a circular saw. The electric tool comprises a bottom plate, a cutting mechanism and an angle adjusting mechanism. The base plate is used as a supporting platform of the electric tool, the cutting mechanism is arranged to rotate relative to the base plate around the rotation axis, the angle adjusting mechanism is used for adjusting the pivoting angle of the cutting mechanism relative to the base plate around the rotation axis, and the angle adjusting mechanism comprises a first locking piece and a second locking piece, and the second locking piece is provided with a matching state at least partially matched with the first locking piece and a release state separated from the first locking piece; in the matched state, the pivot angle of the cutting mechanism and the bottom plate is locked; in the release state, one of the base plate and the cutting mechanism can drive the second locking piece to move relative to the first locking piece, so that the pivot angle of the cutting mechanism and the base plate is adjusted. The angle adjusting process between the bottom plate and the cutting mechanism of the electric tool is simple to operate.

Description

Electric tool and circular saw

Technical Field

The application relates to the technical field of tools, in particular to an electric tool and a circular saw.

Background

Power tools such as circular saws typically include a base plate for abutting a surface of a workpiece during a cutting operation and a cutting mechanism supported on the base plate for performing a cut. The relative angle of the cutting mechanism to the base determines the final cutting angle of the cutting mechanism. The electric circular saw thus also typically includes an angle adjustment mechanism for adjusting the relative angle of the circular saw blade (i.e., the cutting mechanism) to the base plate. The existing angle adjusting mechanism is complicated in process and inconvenient to use.

Accordingly, there is a need for a power tool and a circular saw that solve the above-mentioned problems.

Disclosure of Invention

The application aims to provide an electric tool and a circular saw, wherein the angle adjusting process between a bottom plate and a cutting mechanism is simple to operate.

To achieve the purpose, the application adopts the following technical scheme:

A power tool, comprising:

A base plate for use as a support platform for the power tool;

a cutting mechanism arranged to be rotatable relative to the base plate about a rotation axis;

An angle adjustment mechanism for adjusting an angle at which the cutting mechanism pivots about the rotational axis relative to the base plate;

the angle adjusting mechanism includes:

a first locking member; and

A second locking member having an engaged state in which it is at least partially engaged with the first locking member and a released state in which it is disengaged from the first locking member;

In the mated state, the cutting mechanism is locked with the pivot angle of the bottom plate;

In the release state, one of the base plate and the cutting mechanism can drive the second locking piece to move relative to the first locking piece, so that the pivot angle of the cutting mechanism and the base plate is adjusted.

As an alternative, the first locking member is connected to the cutting mechanism;

The angle adjusting mechanism further comprises a first supporting piece connected to the bottom plate, and the second locking piece is movably connected with the first supporting piece and can be switched between the matching state and the releasing state.

As an alternative, the second locking member is pivotally connected to the first supporting member, the first locking member includes a first mating portion, the second locking member includes a second mating portion for mating with the first mating portion, and a handle portion for user operation, and the handle portion is configured to be able to disengage the second mating portion from the first mating portion after being operated by a user.

As an alternative, the angle adjusting mechanism further includes a first elastic member, two ends of the first elastic member are respectively connected with the first supporting member and the second locking member, and in the mated state, the first elastic member supports the second locking member toward the first locking member, so that the second locking member maintains the mated state.

As an alternative, the first support member is provided with a guide groove, and the first elastic member is limited in the guide groove; and/or

The second locking piece is provided with a guide part, and the first elastic piece is sleeved on the guide part.

As an alternative, the angle adjustment mechanism further comprises a quick positioning mechanism for positioning the cutting mechanism and the base plate at a predetermined pivot angle.

As an alternative, the quick positioning mechanism includes:

A positioning member supported on one of the first locking member and the first supporting member;

The groove is arranged on the other one of the first locking piece and the first supporting piece, and the positioning piece can be clamped in the groove so as to position the cutting mechanism and the bottom plate at a preset pivot angle.

As an alternative scheme, the first locking piece is provided with the holding tank towards one side of first support piece, the setting element install in the holding tank, and at least part ability protrusion in the holding tank and joint in the recess.

As an alternative, the positioning member includes:

a second elastic member having one end connected to one of the first locking member and the first supporting member;

the clamping piece is connected to the other end of the second elastic piece, and the clamping piece can be clamped into the groove.

As an alternative, the number of the grooves is at least two.

A circular saw, comprising:

a bottom plate for serving as a supporting platform for the circular saw;

the angle adjusting mechanism includes:

a first locking member; and

A second locking member having a locked state in which the angle adjustment mechanism is engaged with the first locking member to lock the cutting mechanism with respect to the base plate and a released state in which the cutting mechanism is allowed to rotate with respect to the base plate;

and a reset element for generating a biasing force for biasing the first locking member or the second locking member to bring the angle adjusting mechanism into the locking state.

A circular saw, comprising:

a bottom plate for serving as a supporting platform for the circular saw;

the angle adjusting mechanism includes:

A first state in which the angle at which the cutting mechanism is pivoted to the base plate is fixed;

a second state, the angle adjustment mechanism allowing the cutting mechanism to pivot about the axis of rotation relative to the base plate;

The angle adjusting mechanism comprises an operating piece, wherein the operating piece is used for being switched to the first state or the second state, and the operating piece is used for being operated by a user in the second state to adjust the pivoting angle of the cutting mechanism and the bottom plate.

The application has the beneficial effects that:

when the second locking piece moves to a release state, one of the base plate and the cutting mechanism is operated to rotate relative to the other, so that the second locking piece can move relative to the first locking piece, and the pivoting angle of the cutting mechanism and the base plate can be adjusted.

According to the circular saw disclosed by the application, the second locking piece is operated to be switched from the locking state to the release state, at the moment, the pivoting angle of the cutting mechanism and the bottom plate can be adjusted, when the adjustment is finished and the second locking piece is not operated any more, the biasing force generated by the reset element can automatically switch the second locking piece to the locking state, so that the step of adjusting the pivoting angle of the cutting mechanism and the bottom plate is reduced, or when the operation piece is pressed, the circular saw can be switched to the second state in which the cutting mechanism can pivot relative to the bottom plate, at the moment, the operation piece is continuously operated to adjust the pivoting angle of the cutting mechanism relative to the bottom plate, and after the adjustment is finished, the second locking piece is released and the circular saw is switched to the first state for locking the cutting mechanism and the bottom plate, so that the number of parts and the steps of the operation are reduced, and the convenience of the operation is improved.

Drawings

FIG. 1 is a schematic view of a power tool according to an embodiment of the present application;

FIG. 2 is a schematic view of a power tool according to an embodiment of the present application;

FIG. 3 is a schematic view of an exploded power tool according to an embodiment of the present application;

FIG. 4 is a schematic view of an embodiment of the present application showing the power tool in another view after being disassembled;

FIG. 5 is a schematic view of an angle adjustment mechanism of a second locking member in a mated state according to an embodiment of the present application;

FIG. 6 is a schematic view of the angle adjustment mechanism of the second locking member in the engaged state according to an embodiment of the present application in another view;

FIG. 7 is a schematic view of an angle adjustment mechanism in a viewing angle of a second latch member in a released state according to an embodiment of the present application;

FIG. 8 is a schematic view of the angle adjustment mechanism of the second latch member in a released state according to an embodiment of the present application in another view;

FIG. 9 is a schematic view of a positioning member and a second locking member according to an embodiment of the present application;

fig. 10 is a cross-sectional view of a positioning member according to an embodiment of the present application.

In the figure:

1. a bottom plate;

2. A cutting mechanism;

3. An angle adjusting mechanism; 31. a first locking member; 311. a first mating portion; 312. a receiving groove; 32. a second locking member; 321. a handle; 322. a second mating portion; 323. a guide part; 33. a first elastic member; 34. a first support; 341. a guide groove; 35. a second support; 36. a quick positioning mechanism; 361. a positioning piece; 3611. a second elastic member; 3612. a clamping piece; 3613. a housing; 362. a groove;

4. A housing mechanism; 41. a grip portion;

5. a motor;

l, axis of rotation.

Detailed Description

The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings.

In the description of the present application, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Some angle adjusting mechanisms of electric tools on the market are locked or loosened by adopting a thread structure, when the angle is adjusted, the threads are required to be loosened, then the angle is adjusted, the threads are locked, the process is complicated, and the adjustment damping of the thread structure to the bottom plate and the cutting mechanism is large, so that the use is inconvenient. In addition, the too big screw structure locking dynamics can cause follow-up loosening difficulty, if the locking dynamics is less, can appear not hard up in the use, and then influences cutting accuracy. The application provides an electric tool and an electric circular saw, and an angle adjusting mechanism of the electric tool and the electric circular saw has the advantages of simplicity and convenience in operation.

The application provides an electric tool, wherein the electric tool can be a circular saw, a miter saw, a table saw and the like. As shown in fig. 1 to 10, the power tool is taken as a circular saw in the present embodiment.

As shown in fig. 1 and 2, the power tool includes a base plate 1, a housing mechanism 4, a motor 5, and a cutting mechanism 2. Wherein, motor 5 and cutting mechanism 2 are all connected with casing mechanism 4, and motor 5 is used for driving the cutter output rotary motion of cutting mechanism 2 to cut the work piece. The housing mechanism 4 is formed with a grip portion 41, and the grip portion 41 may be configured as a handle for a user to grip when cutting a workpiece. The base plate 1 is used as a support platform for a power tool, the base plate 1 is formed with a base plate plane for contacting a workpiece, and the cutting mechanism 2 is rotatable relative to the base plate 1 about a rotation axis L, wherein the rotation axis L is parallel to a cutting plane of a cutter and parallel to the base plate plane. The electric tool further comprises an angle adjusting mechanism 3, wherein the angle adjusting mechanism 3 is used for adjusting the pivoting angle of the cutting mechanism 2 relative to the bottom plate 1 around the rotation axis L, so that the included angle between a cutter of the cutting mechanism 2 and the plane of the bottom plate is adjusted, and the cutting angle of the cutting mechanism 2 to a workpiece is adjusted.

As shown in fig. 3 to 8, the angle adjustment mechanism 3 includes a first lock member 31 and a second lock member 32, wherein the second lock member 32 has an engaged state in which it is at least partially engaged with the first lock member 31 and a released state in which it is disengaged from the first lock member 31. In the mated state, the cutting mechanism 2 is locked in its pivoting angle with the base plate 1. In the released state, one of the base plate 1 and the cutting mechanism 2 can drive the second locking member 32 to move relative to the first locking member 31, so that the pivoting angle of the cutting mechanism 2 and the base plate 1 is adjusted. Or one of the base plate 1 and the cutting mechanism 2 drives the first locking member 31 to rotate relative to the second locking member 32, thereby adjusting the pivot angle of the cutting mechanism 2 and the base plate 1.

In the electric tool of the embodiment, when the second locking member 32 moves to the release state, one of the base plate 1 and the cutting mechanism 2 is operated to rotate relative to the other, so that the second locking member 32 can move relative to the first locking member 31, thereby adjusting the pivoting angle of the cutting mechanism 2 and the base plate 1, and in the process, the second locking member 32 and the first locking member 31 are in a disengaged state, thereby reducing the motion damping between the cutting mechanism 2 and the base plate 1 and improving the convenience of adjusting the angle of the electric tool.

In this embodiment, as shown in fig. 3 and 4, the angle adjusting mechanism 3 further includes a first support member 34 and a second support member 35, wherein the first support member 34 is connected to the base plate 1, the second support member 35 is connected to the cutting mechanism 2 or the housing mechanism 4, and the first locking member 31 is connected to the second support member 35. The second locking member 32 is connected to the first support member 34, and the second locking member 32 is movably connected to the first support member 34, so that the second locking member 32 can be switched between a mated state and a released state. When the second locking member 32 is separated from the first locking member 31 (i.e. switched to the released state), the cutting mechanism 2, the second supporting member 35 and the first locking member 31 form a first integral body with a fixed relative position, and the base plate 1, the first supporting member 34 and the second locking member 32 form a second integral body with a fixed relative position, and the first integral body can rotate relative to the second integral body around the rotation axis L, so as to adjust the pivoting angle of the cutting mechanism 2 relative to the base plate 1. When adjusted, the second locking member 32 is operated such that the second locking member 32 again cooperates with the first locking member 31 to lock the relative angle of the cutting mechanism 2 and the base plate 1. It will be appreciated that the first support 34 may be formed separately from the base plate 1 or may be formed integrally therewith. The second support 35 and the housing mechanism 4 may be a separate mechanism or may be an integrally formed structure, which is not limited herein.

In this embodiment, as shown in fig. 3-8, the second locking member 32 is pivotally connected to the first supporting member 34, the first locking member 31 includes a first engaging portion 311, the second locking member 32 includes a second engaging portion 322 and a handle 321, wherein the second engaging portion 322 is configured to engage with at least a portion of the first engaging portion 311, and the handle 321 is configured to be operated by a user. In this embodiment, the middle portion of the second locking member 32 is pivotally connected to the first supporting member 34. After the user operates the handle 321, the second matching portion 322 is separated from the first matching portion 311, so that the second locking piece 32 is switched to a release state, and the structure is simple and the operation is convenient. The handle 321 may be specifically manipulated by pressing. In this embodiment, the second engaging portion 322 and the handle 321 are respectively located at two sides of the pivot of the second locking member 32, so that when the handle 321 is pressed, the second engaging portion 322 can vertically rotate around and tilt, thereby being separated from the first engaging portion 311. As shown in fig. 3, the first engaging portion 311 and the second engaging portion 322 are each configured as a gear, and the first engaging portion 311 and the second engaging portion 322 can be engaged to be in an engaged state. It should be understood that, in other embodiments, the first engaging portion 311 and the second engaging portion 322 may be in an engaged state by friction force or other manners to lock the positions of the first locking member 31 and the second locking member 32, which is not limited herein.

In this embodiment, when adjusting the pivot angle of the cutting mechanism 2 relative to the base plate 1, the user can hold the holding portion 41 with one hand and operate the second locking member 32 with the other hand, and when the user presses the handle 321, the second locking member 32 is switched to the release state, and at this time, the handle 321 is continuously pressed, so that the above-mentioned first and second units can be relatively rotated, that is, the adjustment of the pivot angle of the cutting mechanism 2 and the base plate 1 is achieved. The electric tool of the present embodiment can realize the switching from the first state to the second state by the user only by using one component of the second locking member 32, and the change of the angle in the second state, and does not require the operation of other components, thereby improving the operation efficiency and the convenience of the operation.

In the present embodiment, as shown in fig. 5, the first engaging portion 311 of the first locking member 31 is configured as a circular arc rack. The center of the circular arc rack can be positioned on the rotation axis L. The second mating portion 322 of the second locking member 32 is configured as a circular arc gear having a radius matching that of the first mating portion 311, and the arc length of the second mating portion 322 is smaller than that of the first mating portion 311, so as to ensure that the second mating portion 322 can still engage with the first mating portion 311 after the first and second members rotate around the rotation axis by a certain angle.

As shown in fig. 5 to 8, the angle adjusting mechanism 3 further includes a first elastic member 33, and both ends of the first elastic member 33 are respectively connected to the first supporting member 34 and the second locking member 32. In the engaged state, the first elastic member 33 urges the second locking member 32 toward the first locking member 31 so that the second locking member 32 maintains the engaged state. When the user no longer presses the second locking member 32, the first elastic member 33 can drive the second locking member 32 toward the first locking member 31 and reengage the second locking member 32 with the first locking member 31. Namely, the first elastic member 33 enables the second locking member 32 to automatically switch from the disengaged state to the engaged state to lock the pivoting angle of the cutting mechanism 2 and the base plate 1, thereby reducing the steps of adjusting the pivoting angle of the base plate 1 and the cutting mechanism 2 and improving the operation efficiency and the convenience of use. In this embodiment, as shown in fig. 6, one end of the first elastic member 33 is connected to the first supporting member 34, and the other end is connected to the end of the second locking member 32 away from the handle 321 (i.e. the end provided with the second engaging portion 322), so when the user no longer presses the handle 321, the first elastic member 33 brings the second engaging portion 322 close to the first engaging portion 311 and engages with the first engaging portion 311. Alternatively, the first elastic member 33 may be a spring. In other embodiments, the first elastic member 33 may be a torsion spring.

In this embodiment, as shown in fig. 6, a guiding groove 341 is disposed on the first supporting member 34, the first elastic member 33 is limited in the guiding groove 341, and the guiding groove 341 can limit the mounting position of the first elastic member 33 and limit the deformation direction of the first elastic member 33, so as to ensure that the first elastic member 33 accurately presses the second locking member 32 against the first locking member 31. As shown in fig. 3 and 6, the second locking member 32 is configured with a guide portion 323, the first elastic member 33 is sleeved on the guide portion 323, the guide portion 323 can limit the installation position of the first elastic member 33, and can limit the deformation direction of the first elastic member 33, so that the first elastic member 33 can accurately press the second locking member 32 against the first locking member 31. In this embodiment, the guide 323 may be a boss configured on the second locking member 32. It will be appreciated that in some embodiments, only one of the guide groove 341 and the guide portion 323 may be provided, which is not limited herein.

As shown in fig. 3 and 4, the angle adjustment mechanism 3 further includes a quick positioning mechanism 36, the quick positioning mechanism 36 being used to position the cutting mechanism 2 and the base plate 1 at a preset pivot angle. When the user switches the second locking member 32 to the release state and rotates the base plate 1 and the cutting mechanism 2 relatively, the quick positioning mechanism 36 can assist the user to quickly rotate the relative angle of the base plate 1 and the cutting mechanism 2 to a preset pivot angle, which is the pivot angle of the base plate 1 and the cutting mechanism 2 commonly used by the user, so that the convenience of using the electric tool is further improved.

In this embodiment, as shown in fig. 3 and 4, the quick positioning mechanism 36 includes a positioning member 361 and a groove 362, where the positioning member 361 is supported on the first locking member 31, the groove 362 is disposed on a side of the first supporting member 34 facing the first locking member 31, and the positioning member 361 can be selectively clamped to the groove 362 to position the cutting mechanism 2 and the base plate 1 at a preset pivot angle, and during the rotation of the first supporting member 34 relative to the first locking member 31, the positioning member 361 can be retracted from the groove 362, so as to ensure smooth relative movement between the first supporting member 34 and the first locking member 31. In other embodiments, the positioning member 361 may be supported on the first supporting member 34, and the recess 362 is disposed on a side of the first locking member 31 facing the first supporting member 34, which is not limited herein.

In this embodiment, as shown in fig. 3, a receiving groove 312 is disposed on the side of the first locking member 31 facing the first supporting member 34, and the positioning member 361 is mounted in the receiving groove 312 and at least partially protrudes from the receiving groove 312 to be capable of being clamped in the groove 362. On the one hand, the accommodating groove 312 can position the positioning member 361, so that the installation position of the positioning member 361 is ensured to be accurate; on the other hand, the entire structure of the angle adjusting mechanism 3 can be made compact. Alternatively, the positioning member 361 may be fixed in the receiving groove 312 by any means such as interference fit connection, glue bonding, etc., which is not limited herein.

As shown in fig. 9 and 10, the positioning member 361 includes a second elastic member 3611 and a clamping member 3612, wherein one end of the second elastic member 3611 is connected to the first locking member 31, the clamping member 3612 is connected to the other end of the second elastic member 3611, and the clamping member 3612 can be clamped into the groove 362. When the first locking member 31 and the first supporting member 34 are relatively rotated, the first supporting member 34 presses the clamping member 3612, the clamping member 3612 presses the second elastic member 3611, and the second elastic member 3611 is compressed to retract the clamping member 3612 from the groove 362, so that the relative movement between the first locking member 31 and the second supporting member 35 is smoother. In this embodiment, the clamping member 3612 is a sphere, so that friction damage when the clamping member 3612 is clamped into the groove 362 and separated from the groove 362 can be reduced, and the service life of the angle adjusting mechanism 3 can be prolonged. As shown in fig. 9, the positioning member 361 further includes a housing 3613, the housing 3613 is connected in the accommodating groove 312, an accommodating space is formed in the housing 3613, the second elastic member 3611 is installed in the accommodating space and fixedly connected with the housing 3613, and the clamping member 3612 is at least partially exposed from the accommodating space. The installation between the second elastic member 3611 and the first locking member 31 is facilitated by providing the housing 3613.

Alternatively, as shown in fig. 4, in the present embodiment, the number of the grooves 362 is two, and when the positioning member 361 is snapped into different grooves 362, the base plate 1 and the cutting mechanism 2 have different relative angles. In this embodiment, when the positioning member 361 is respectively engaged with the two grooves 362, the pivot angles of the base plate 1 and the cutting mechanism 2 are 22.5 ° and 45 °, respectively. It will be appreciated that the angles are merely typical angles of users, and in other embodiments, specific values of the angles may be selected and set as desired. In other embodiments, the number of the grooves 362 is not limited to two, but may be one or more, and when the number of the grooves 362 is plural, the grooves 362 are located on an arc line, and the center of the arc line may be located on the rotation axis L, so as to ensure that the positioning member 361 can be smoothly clamped into any one of the grooves 362.

The application also provides a circular saw, wherein the circular saw comprises a bottom plate 1, a cutting mechanism 2 and an angle adjusting mechanism 3. The base plate 1 is used as a supporting platform of a circular saw, the cutting mechanism 2 is arranged to be capable of rotating relative to the base plate 1 around a rotation axis L, the angle adjusting mechanism 3 is used for adjusting the pivoting angle of the cutting mechanism 2 relative to the base plate 1 around the rotation axis L, the angle adjusting mechanism 3 comprises a first locking piece 31 and a second locking piece 32, and the second locking piece 32 is provided with a locking state which is matched with the first locking piece 31 to enable the angle adjusting mechanism 3 to lock the cutting mechanism 2 relative to the base plate 1 and a releasing state which allows the cutting mechanism 2 to rotate relative to the base plate 1; the reset element generates a biasing force that biases the first locking member 31 or the second locking member 32 to bring the angle adjustment mechanism 3 into the locked state. In this embodiment, the reset element may specifically be the first elastic member 33 above. In the above circular saw, the second locking member 32 is operated to switch from the locking state to the releasing state, at this time, the pivot angle between the cutting mechanism 2 and the base plate 1 can be adjusted, and when the adjustment is completed and the second locking member 32 is no longer operated, the biasing force generated by the reset element can automatically switch the second locking member 32 to the locking state, so that the step of adjusting the pivot angle between the cutting mechanism 2 and the base plate 1 is reduced, and the convenience of operation is improved. Alternatively, the return element may be a spring, torsion spring, tension spring, or the like.

The application also provides another circular saw which comprises a bottom plate 1, a cutting mechanism 2 and an angle adjusting mechanism 3. The base plate 1 is used as a supporting platform of the circular saw, and the cutting mechanism 2 is arranged to rotate relative to the base plate 1 around a rotation axis L; the angle adjustment mechanism 3 is for adjusting an angle at which the cutting mechanism 2 is pivoted about the rotation axis L with respect to the base plate 1, the angle adjustment mechanism 3 includes a first state in which the angle at which the cutting mechanism 2 is pivoted with respect to the base plate 1 is fixed, and a second state in which the angle adjustment mechanism 3 allows the cutting mechanism 2 to be pivoted about the rotation axis L with respect to the base plate 1, wherein the angle adjustment mechanism 3 includes an operating member for switching to the first state or the second state, and the operating member is for being operated by a user to adjust the angle at which the cutting mechanism 2 is pivoted with respect to the base plate 1 in the second state. In this embodiment, the operating member may be the second locking member 32 above. When the above-mentioned circular saw is pressed, the circular saw can be switched to the second state that the cutting mechanism 2 can pivot relative to the base plate 1, at this time, the pivot angle of the cutting mechanism 2 relative to the base plate 1 can be adjusted by continuously operating the operation member, and after the adjustment is completed, the second locking member 32 is released and the circular saw is switched to the first state that the cutting mechanism 2 and the base plate 1 are locked, so that the number of parts and steps for operation are reduced, and the convenience of operation is improved.

It is to be understood that the foregoing examples of the application are provided for the purpose of illustration only and are not intended to limit the scope of the application, which is defined by the claims, since modifications in both the detailed description and the application scope of the application will become apparent to those skilled in the art upon consideration of the teachings of the application. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are desired to be protected by the following claims.

Claims

1. A power tool, comprising:

A base plate (1) for use as a support platform for the power tool;

-a cutting mechanism (2) arranged rotatable relative to the base plate (1) about a rotation axis (L);

An angle adjustment mechanism (3) for adjusting the angle at which the cutting mechanism (2) is pivoted about the rotation axis (L) with respect to the base plate (1);

characterized in that the angle adjusting mechanism (3) comprises:

A first locking member (31); and

A second locking member (32) having an engaged state in which it is at least partially engaged with the first locking member (31) and a released state in which it is disengaged from the first locking member (31);

In the mated state, the cutting mechanism (2) is locked with the pivoting angle of the bottom plate (1);

In the released state, one of the base plate (1) and the cutting mechanism (2) can drive the second locking piece (32) to move relative to the first locking piece (31), so that the pivoting angle of the cutting mechanism (2) and the base plate (1) is adjusted.

2. The electric tool according to claim 1, characterized in that the first locking member (31) is connected with the cutting mechanism (2);

the angle adjusting mechanism (3) further comprises a first supporting piece (34) connected to the bottom plate (1), and the second locking piece (32) is movably connected with the first supporting piece (34) and can be switched between the matching state and the release state.

3. The power tool according to claim 2, wherein the second locking member (32) is pivotally connected to the first support member (34), the first locking member (31) comprises a first mating portion (311), the second locking member (32) comprises a second mating portion (322) for mating with the first mating portion (311) and a handle portion (321) for user operation, and the handle portion (321) is configured to be able to disengage the second mating portion (322) from the first mating portion (311) after operation by a user.

4. A power tool according to claim 3, wherein the angle adjusting mechanism (3) further includes a first elastic member (33), both ends of the first elastic member (33) are respectively connected to the first supporting member (34) and the second locking member (32), and in the mated state, the first elastic member (33) holds the second locking member (32) against the first locking member (31) so that the second locking member (32) maintains the mated state.

5. The electric tool according to claim 4, wherein the first support member (34) is provided with a guide groove (341), and the first elastic member (33) is limited in the guide groove (341); and/or

The second locking piece (32) is provided with a guide part (323), and the first elastic piece (33) is sleeved on the guide part (323).

6. The power tool according to any one of claims 2-5, wherein the angle adjustment mechanism (3) further comprises a quick positioning mechanism (36), the quick positioning mechanism (36) being adapted to position the cutting mechanism (2) and the base plate (1) at a preset pivot angle.

7. The power tool as set forth in claim 6, wherein the quick-positioning mechanism (36) includes:

a positioning member (361) supported on one of the first locking member (31) and the first supporting member (34);

And a groove (362) provided on the other of the first locking member (31) and the first supporting member (34), the positioning member (361) being capable of being engaged with the groove (362) to position the cutting mechanism (2) and the base plate (1) at a predetermined pivot angle.

8. The electric tool according to claim 7, wherein a receiving groove (312) is provided on a side of the first locking member (31) facing the first supporting member (34), and the positioning member (361) is mounted to the receiving groove (312) and can protrude from the receiving groove (312) and be engaged with the recess (362).

9. The power tool as set forth in claim 7, wherein the positioning member (361) includes:

a second elastic member (3611) having one end connected to one of the first locking member (31) and the first supporting member (34);

The clamping piece (3612) is connected to the other end of the second elastic piece (3611), and the clamping piece (3612) can be clamped into the groove (362).

10. The power tool according to claim 7, wherein the number of grooves (362) is at least two.

11. A circular saw, comprising:

a bottom plate (1) for use as a support platform for the circular saw;

characterized in that the angle adjusting mechanism (3) comprises:

A first locking member (31); and

A second locking member (32) having a locked state that cooperates with the first locking member (31) to lock the angle adjusting mechanism (3) to the cutting mechanism (2) with respect to the base plate (1) and a released state that allows the cutting mechanism (2) to rotate with respect to the base plate (1);

-a return element generating a biasing force biasing said first locking member (31) or said second locking member (32) to bring said angle adjustment mechanism (3) into said locked state.

12. A circular saw, comprising:

a bottom plate (1) for use as a support platform for the circular saw;

characterized in that the angle adjusting mechanism (3) comprises:

A first state, in which the angle at which the cutting mechanism (2) is pivoted to the base plate (1) is fixed;

-a second state, in which the angle adjustment mechanism (3) allows the cutting mechanism (2) to pivot about the rotation axis (L) with respect to the base plate (1);

Wherein the angle adjustment mechanism (3) comprises an operating member for switching to the first state or the second state, and in the second state the operating member is for being operated by a user to adjust the angle at which the cutting mechanism (2) is pivoted with the base plate (1).