CN218889013U - Tool head and power tool - Google Patents

Abstract

The application relates to the technical field of electric tools, in particular to a tool head and a power tool, wherein the tool head comprises: the protective cover is arranged in the protective cover in a rotating way at least partially; the protective cover comprises a lower edge; the tool head further comprises: the adjusting plate is rotationally arranged around the first axis; the adjusting plate comprises a contact surface and an extension surface, the contact surface is configured to be abutted with the upper surface of the curb, and the extension surface is configured to be contacted with the lower edge; the cutter setting plate is fixedly connected with the adjusting plate and is configured to be attached to the side face of the curb; and the elastic device is configured to drive the adjusting plate to rotate in a direction away from the protective cover. This application can effectively cut weeds, avoids the motor to lock up changeing, guarantees the life of blade, compact structure, promotes the experience sense of operation.

Description

Tool head and power tool

Technical Field

The application relates to the technical field of electric tools, in particular to a tool head and a power tool.

Background

When trimming lawns on gardens and on cement curbs on road sides, edgers are commonly used. The trimming machine is used for beating soil and beating grass at the same time of beating soil. Grass growing in disorder at the edge of the lawn and weeds in the ground brick joints can be cut off.

When the grass trimmer is used, two operation methods are generally adopted:

1. firstly, tool setting and then starting: the blade is aligned with the location to be cut and the machine is started. The blade rotates a bit and strikes earth, and the motor output torque is little this moment, and the blade is limited to break the earth ability, causes to lock the commentaries on classics, can burn the motor even.

2. Firstly starting and then setting the tool: the machine is started first to rotate the blade and then to align the place to be cut. The mode is uneven at first, the blade is easy to strike the ground to be worn, sparks are generated, the reaction force is large, the service life of the blade can be shortened, and the experience is poor.

Therefore, a tool head and a power tool are needed to solve the above problems.

Disclosure of Invention

An object of the application is to provide a tool head and power tool, when can effectively cut weeds, avoid the motor to lock up the commentaries on classics, guarantee the life of blade, promote the experience sense of operation.

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

a tool head comprising: the protective cover is arranged in the protective cover in a rotating way at least partially; the protective cover comprises a lower edge; the tool head further comprises: the adjusting plate is rotationally arranged around the first axis; the adjusting plate comprises a contact surface and an extension surface, the contact surface is configured to be abutted with the upper surface of the curb, and the extension surface is configured to be contacted with the lower edge; the cutter setting plate is fixedly connected with the adjusting plate and is configured to be attached to the side face of the curb; and the elastic device is configured to drive the adjusting plate to rotate in a direction away from the protective cover.

In some embodiments, one end of the resilient means is fixed relative to the shield and the other end of the resilient means is fixed relative to the adjustment plate.

In some embodiments, the tool head includes a dust cap configured to receive at least a portion of the resilient means.

In some embodiments, the adjusting plate is provided with a limiting groove, and the limiting piece penetrates through the limiting groove to be connected with the protective cover.

In some embodiments, the blade has a contour configured to contact soil, at least a portion of the contour being substantially straight, at least a portion of the contour being an arc, the radius of the arc being greater than or equal to 15mm and less than or equal to 60mm.

In some embodiments, the tool setting plate and the adjustment plate are of unitary construction.

In some embodiments, the blade is positioned on a side of the contact surface proximate to the guard.

A power tool comprises a power head, a connecting rod and a tool head on the power head, wherein the tool head is in transmission connection with a cutting piece, one end of the connecting rod is connected with the power head, and the other end of the connecting rod is connected with a protective cover.

In some embodiments, the power tool is an edger.

A method of using a power tool for operating the power tool as above, comprising the steps of: s1, placing a contact surface of an adjusting plate on the upper surface of a curb; s2, cutting the cutting member by using a cutting plate according to the side surface of the curb; s3, starting the power head to enable the cutting piece to start rotating; s4, lifting the connecting rod, and rotating the adjusting plate relative to the protective cover to enable the cutting piece to be pressed down to start cutting; s5, pressing down the connecting rod, and driving the adjusting plate to rotate relative to the protective cover by the elastic device, so that the cutting piece is lifted to stop cutting.

The beneficial effects of this application:

the tool head provided by the application is simple and compact in structure, convenient to operate, long in service life and good in cutting effect.

The utility model provides a power tool can effectively cut weeds, avoids the motor to lock up changeing, guarantees the life of blade, compact structure, promotes the experience of operation and feels.

According to the application, the power tool is operated, the tool is firstly set, then the power head is started, and then the power head is pressed down to cut, so that weeds can be effectively cut, meanwhile, the motor is prevented from being locked, the service life of the blade is guaranteed, and the experience of operation is improved.

Drawings

FIG. 1 is a schematic view of a tool head of one embodiment of the present application;

FIG. 2 is an exploded view of the tool head of FIG. 1;

FIG. 3 is a partial cross-sectional view of the tool head of FIG. 1;

FIG. 4 is an exploded view of the resilient means and dust cap of the tool head of FIG. 1;

FIG. 5 is a schematic view of the adjustment plate and the setting plate of the tool head of FIG. 1;

FIG. 6 is a schematic diagram of a power tool of one embodiment of the present application;

fig. 7 is a flow chart of a method of using the power tool of fig. 6.

In the figure:

1. a protective cover; 11. a cutting member; 14. a lower edge; 2. a mounting plate; 21. a limiting piece; 211. a fixing part; 22. a height adjusting groove; 3. an adjusting plate; 31. a stop surface; 32. a limit groove; 33. a contact surface; 34. an extension surface; 5. a roller; 6. an elastic device; 61. a dust cover; 611. a housing part; 612. a blocking portion; 613. a support rib; 614. a fixing groove; 615. a first fixed end; 616 a second fixed end; 617. a hole; 71. A knife setting plate; 72. a contour line; 73. a discharge section; 74. setting a tool face; 100. a tool head; 101. a first axis; 200. a connecting rod; 201. a first handle; 202. a second handle; 300. a power head; 400. a power tool.

Detailed Description

The technical scheme of the application is further described below with reference to the accompanying drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present application are shown.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

When trimming lawns in gardens and on road sides, edge trimmers are often used. The trimming machine is used for beating soil and beating grass at the same time of beating soil. The grass growing at the edge of the lawn in disorder can be cut off, and weeds in the ground brick joints can be cut off. In order to avoid motor stall while effectively cutting weeds in the trimming process, ensure the service life of the blade, and improve the experience of operation, as shown in fig. 1 to 4, the tool head 100 comprises a protective cover 1, a mounting plate 2, an adjusting plate 3, an elastic device 6 and a cutter setting plate 71.

As shown in fig. 2, at least part of the cutting member 11 is rotatably disposed in the shield 1, and the cutting member 11 is a blade. The blade includes at least one cutting edge for cutting soil and weeds. The adjustment plate 3 is rotatably arranged about a first axis 101. In this embodiment, the adjusting plate 3 is rotatably provided on the shield 1. The adjusting plate 3 comprises a contact surface 33 and an extension surface 34. The contact surface 33 is configured to abut against the upper surface of the curb. Curbs refer to the edge portions of gardens, walkways, dividers, or shoulders. In the present embodiment, the contact surface 33 is a cambered surface. The shield 1 comprises a lower edge 14. The extension surface 34 is configured to contact the lower edge 14. In some embodiments, the extension of the extension surface 34 is the same as the extension of the lower edge 14, and when the extension surface 34 contacts the lower edge 14, the extension surface 34 conforms to the lower edge 14 along the extension.

The angle a between the adjusting plate 3 and the shield 1 refers to the angle between the extension surface 34 and the lower edge 14. The tool setting plate 71 is fixedly connected with the adjusting plate 3. When the adjustment plate 3 moves, the setting plate 71 moves with the adjustment plate 3. The cutter setting plate 71 is configured to fit the side of the curb such that the cutter setting plate 71 prompts the user whether the cutter 11 is vertically aligned with the curb.

When the tool head 100 is in use, the user abuts the adjustment plate 3 against the upper surface of the curb. When the protective cover 1 rotates relative to the curb, the cutting member 11 starts to be depressed. The cutting position of the cutting member 11 can be determined by providing the cutter plates 71, and thus, effective cutting of weeds can be ensured. Then, the user controls the cutting member 11 to rotate, after the cutting member 11 is rotationally stable, the pressing cutting is performed again, so that the cutting member 11 can be ensured to have enough power, the motor is prevented from being locked, the service life of the blade is ensured, and the experience of operation is improved.

The regulating plate 3 has an initial state and a regulating state. In the initial state, the angle a between the adjusting plate 3 and the protective cover 1 is greater than the angle a between the adjusting plate 3 and the protective cover 1 in the adjusted state. When the adjusting plate 3 is in the initial state, the user abuts the adjusting plate 3 on the curb, and the adjusting plate 3 is fixed relative to the protective cover 1, at which time the cutting member 11 does not cut the soil. When the adjusting plate 3 is in the adjusted state, the user adjusts the angle a between the adjusting plate 3 and the shield 1, the adjusting plate 3 rotates with respect to the shield 1, and the cutter 11 cuts the soil at this time. The adjustment plate 3 is configured to be movable to an initial position and an adjustment position. In some embodiments, when the adjusting plate 3 is in the initial position, there is a distance between the cutting member 11 and the earth, and the cutting member 11 does not cut the earth. When the adjusting plate 3 is moved to the adjusting position, the cutting member 11 approaches the soil to cut the soil.

The elastic means 6 are configured to drive the adjustment plate 3 to rotate in a direction away from the shield 1. That is, the elastic means 6 drives the regulating plate 3 to switch from the regulating state to the initial state. In some embodiments, the elastic means 6 are arranged between the protective cover 1 and the adjustment plate 3. One end of the elastic means 6 is fixed with respect to the shield 1 and the other end of the elastic means 6 is fixed with respect to the adjustment plate 3. The elastic means 6 generates a torque when being pressed. The greater the degree of deformation of the elastic means 6, the greater the torque of the elastic means 6, the more energy the elastic means store. In the initial state, the degree of deformation of the elastic means 6 is smaller than the degree of deformation of the elastic means 6 in the adjusted state. In the initial state, the torque of the elastic means 6 is smaller than the torque of the elastic means 6 in the adjusted state. That is, since the adjustment plate 3 is rotatably provided on the shield 1, in the adjustment state, the torsion force applied to the adjustment plate 3 by the elastic means 6 is greater than the torsion force applied to the adjustment plate 3 by the elastic means 6 in the initial state, and the elastic means 6 has a tendency to release energy. In the adjustment state, the adjustment device 6 always has a tendency to switch the adjustment plate 3 from the adjustment state to the initial state. The elastic device 6 drives the adjusting plate 3 to move from the adjusting state to the initial state, so that after a user finishes the cutting work, the adjusting plate 3 automatically resets to the initial state, the operation sequence of the tool head 100 is ensured to be unchanged, and the user can use the tool head 100 next time conveniently. When the cutting member 11 cuts earth, the earth generates a reaction force to the cutting member 11, and the tool head 100 tends to move upward, and the counter plate 71 and the adjusting plate 3 tend to move away from the earth and the curb. In the adjustment state, the adjustment device 6 always has a tendency to switch the adjustment plate 3 from the adjustment state to the initial state, so that the adjustment device 6 ensures that the setting plate 71 and the adjustment plate 3 always come into contact with earth and curbs, improving reliability.

When cutting is performed, the adjusting plate 3 is rotated by a certain angle a with respect to the protective cover 1, so that the cutting member 11 is pressed down to cut weeds. By providing the elastic means 6, the elastic means 6 is elastically deformed when the adjustment plate 3 is rotated against the elastic force of the elastic means 6. After cutting is finished, the elastic device 6 drives the adjusting plate 3 to reset under the action of self restoring force. In some embodiments, the elastic means 6 is a torsion spring. As shown in fig. 4, in some embodiments, the tool head 100 includes a dust cap 61, the dust cap 61 being configured to receive at least a portion of the resilient means 6. The dust cap 61 is substantially C-shaped. The dust cover 61 includes a receiving portion 611 and a blocking portion 612. The accommodating portion 611 is formed with a columnar accommodating space configured to accommodate the elastic means 6. The size of the receiving portion 611 is larger than the elastic means 6, so that the elastic means 6 can be deformed within the receiving portion 611. The receiving portion 611 includes a support rib 613, and the support rib 613 supports the elastic means 6. The support ribs 613 have a thickness in the direction of extension of the first axis 101, such that the support ribs 613 block dirt from entering the resilient means 6 from the direction of extension of the first axis 101. In some embodiments, the support ribs 613 are plate-shaped. The receiving part 611 includes a fixing groove 614. The elastic means 6 comprises a first fixed end 615 and a second fixed end 616. The fixing groove 614 accommodates the first fixing end 615. The second fixed end 616 is fixedly connected with the protection cover 1. The dust cap 61 is fixedly connected with the adjusting plate 3. When the adjusting plate 3 rotates from the initial position to the adjusting position, the dust cover 61 rotates with the adjusting plate 3, and the dust cover 61 drives the elastic device 6 to rotate. When the adjustment plate 3 has a tendency to rotate from the adjustment position to the initial position, the elastic means 6 drives the dust cover 61 to rotate, thereby driving the adjustment plate 3 to rotate. The barrier 612 includes holes 617, and the number of holes 617 may be plural. The plurality of apertures 617 are distributed along a radial direction of the first axis 101 such that the apertures 617 reduce the weight of the dust cap 61. The dust cap 61 accommodates the resilient means 6, thus eliminating or at least reducing the contamination of the resilient means 6 by earth and improving the reliability of the resilient means 6.

As shown in fig. 2 to 3, in some embodiments, the adjusting plate 3 is provided with a limiting groove 32, and the limiting piece 21 is connected with the protection cover 1 through the limiting groove 32. The limiting groove 32 is substantially arc-shaped. The limiting piece 21 is configured to move along the limiting groove 32 relative to the adjusting plate 3, and the limiting piece 21 and the protective cover 1 form a fixed connection. The stopper 21 includes a fixing portion 211, and the size of the fixing portion 211 is larger than the size of the stopper groove 32. By arranging the limiting piece 21, the range of the included angle between the adjusting plate 3 and the protective cover 1 can be limited. The central angle corresponding to the limit groove 32 is the adjustable range of the angle a between the adjusting plate 3 and the protective cover 1. Through the arrangement, the overshoot phenomenon in the adjusting process can be avoided, and the angle a between the adjusting plate 3 and the protective cover 1 is ensured to be adjusted in the set angle range. The size of the fixing portion 211 is larger than that of the limit groove 32, so that the rotation of the adjusting plate 3 relative to the shield 1 is stable and reliable.

As shown in fig. 3 and 5, the setting plate 71 is disposed on one side of the adjustment plate 3 and is disposed substantially vertically downward. In some embodiments, the knife plate 71 is located on the side of the extension surface 34 near the protection cover 1, so that the structure is compact and convenient to use. In some embodiments, the tool setting plate 71 is located on a side of the extension surface 34 near the contact surface 33 for quick tool setting by a user. The setting plate 71 can be attached to the side surface of the curb. When the user uses the tool head 100, the cutter setting plate 71 is aligned with the side edge of the curb, so that the cutting path is ensured to be matched with the trend of the curb before the cutting piece 11 cuts, and the condition that the initial cutting path is not neat is avoided. In the cutting process, since the cutter setting plate 71 contacts with the side surface of the curb, a user can also determine whether the cutter setting plate 71 is aligned with the side surface of the curb, so as to adjust the cutting path of the tool head 100 in time, thereby ensuring that the cut lawn edge is neat and beautiful. By providing the cutter plates 71, the cutting position of the cutter 11 can be quickly determined when cutting weeds, thereby ensuring that the trimmed weeds remain tidy and ensuring the trimming effect. The tool setting plate 71 has a contour line 72, and the contour line 72 is configured to contact soil. The tool setting plate 71 includes a discharge portion 73 and a tool setting surface 74. When the power head 300 moves along the curb, the setting surface 74 engages the side of the curb. A portion of the blade 71 is immersed in the earth, and the contour line 72 is in contact with the earth. The earth causes resistance to the cutter plate 71. In some embodiments, at least a portion of the contour line 72 is substantially straight, such that the upward resistance exerted by the earth on the blade 71 is reduced, facilitating handling. In some embodiments, at least a portion of the contour line 72 is an arc having a radius greater than or equal to 15mm and less than or equal to 60mm. In this way, the arc line and the straight line are connected smoothly, and the resistance of soil to the cutter setting plate 71 is reduced. The discharge portion 73 is connected to the extension surface 34. In some embodiments, the drain 73 is a notch. The effective length of the discharge portion 73 in the extending direction of the first axis 101 is smaller than the effective length of the extending surface 34 in the extending direction of the first axis 101. Thus, soil can be discharged from the discharge portion 73, and is not easily accumulated under and inside the adjustment plate 3, preventing contamination of the adjustment plate 3.

In some embodiments, the tool setting plate 71 is of unitary construction with the adjustment plate 3. Specifically, the setting plate 71 and the adjusting plate 3 can be manufactured by a sheet metal process. The tool setting plate 71 and the adjusting plate 3 are mounted on the protective cover 1 together through quick-change screws. By adopting the integrated design of the cutter setting plate 71 and the adjusting plate 3, on the one hand, the manufacture is convenient, and on the other hand, the connection strength of the cutter setting plate 71 and the adjusting plate 3 can be ensured. And the relative position between the tool setting plate 71 and the adjusting plate 3 cannot be changed, so that the accuracy of tool setting is ensured. In the use process, the adjusting plate 3 is abutted against the upper surface of the curb, and the cutter setting plate 71 is abutted against the side surface of the curb, so that the use is easy to wear after a period of time. The tool setting plate 71 and the adjusting plate 3 are of an integrated structure, so that the tool setting plate 71 and the adjusting plate 3 can be detached together, the replacement is convenient, and the operation is simple and quick. In other embodiments, the adjustment plate 3 is detachably connected to the setting plate 71. By mounting the tool setting plate 71 to the adjusting plate 3 by using quick-change screws, on the one hand, the requirements for tool setting can be satisfied; on the other hand, after the adjusting plate 3 is worn out, the quick change screw may be removed, thereby removing the setting plate 71, and the setting plate 71 may be mounted to another adjusting plate 3.

In some embodiments, the tool head 100 further comprises a mounting plate 2, the mounting plate 2 being arranged on the protective cover 1. The roller 5 is rotatably arranged on the mounting plate 2, and the roller 5 can roll on a road surface. When the pruning operation is carried out, the roller 5 is arranged, so that the tool head 100 is effectively supported by the road surface, and the labor intensity of cleaning staff is reduced. And in addition, the tool head 100 is convenient to move in a rolling mode, so that the experience of operation is improved.

In some embodiments, the mounting plate 2 is provided with a height adjusting groove 22, the rotating shaft of the roller 5 is arranged in the height adjusting groove 22, and the position of the rotating shaft in the height adjusting groove 22 can be adjusted. When the cleaning personnel use, according to the height of cleaning personnel self, the position of adjustment gyro wheel 5 on mounting panel 2 can adjust the height of trimmer to satisfy the cleaning personnel use of different heights, promote the experience sense of operation.

As shown in fig. 6, the present embodiment also provides a power tool 400 including the power head 300, the connecting rod 200, and the tool head 100 as above. The tool head 100 is in transmission connection with the cutting member 11, one end of the connecting rod 200 is connected with the power head 300, and the other end of the connecting rod 200 is connected with the protective cover 1. The power head 300 includes a motor, and a transmission shaft is provided in the connection rod 200. The transmission shaft is specifically a spline shaft. The motor is connected with a transmission shaft, and weeds are cut between the transmission shaft and the cutting piece 11 in a bevel gear transmission mode.

In this embodiment, the power tool 400 is an edger that is capable of effectively cutting weeds. The connecting rod 200 is provided with a first handle 201 and a second handle 202 at intervals, and the first handle 201 and the second handle 202 are fixed on the connecting rod 200. When working with the edger, the operator holds the first handle 201 and the second handle 202 with two hands, respectively, for repair work.

In order to reduce the weight of the edger for ease of handling and portability, the gearbox and connecting rod 200 of the power head 300 may be made of carbon fiber material in this embodiment. The protective cover 1 and the adjusting plate 3 can be made of plastic, so that the cost is saved, and the weight is reduced.

As shown in fig. 7, the present embodiment further provides a method for using the power tool 400, for operating the power tool 400 as above, including the steps of:

s1, placing a contact surface of an adjusting plate 3 on the upper surface of a curb;

s2, cutting the cutting member 11 by using a cutting plate 71 with reference to the side surface of the curb;

s3, starting the power head 300 to enable the cutting member 11 to start rotating;

s4, lifting the connecting rod 200, and rotating the adjusting plate 3 relative to the protective cover 1, so that the cutting piece 11 is pressed down to start cutting;

s5, the connecting rod 200 is pressed down, and the elastic device 6 drives the adjusting plate 3 to rotate relative to the protective cover 1, so that the cutting piece 11 is lifted to stop cutting.

Through firstly setting a knife, then starting the power head 300, cutting again, the motor is prevented from being blocked when weeds can be effectively cut, the service life of the blade is ensured, and the experience of operation is improved. The user places the contact surface 33 of the adjustment plate 3 on the upper surface of the curb. Due to the torsion setting of the elastic means 6, the force of the power tool 400 on the adjusting plate 3 is smaller than the torsion of the elastic means 6, and the adjusting plate 3 does not rotate relative to the protective cover 1. In this embodiment, the roller 5 contacts the upper surface of the curb simultaneously with the contact surface 33 of the adjustment plate 3 to support the power tool 400. The angle a of the connecting rod 200 to the upper surface of the curb at this time is less than or equal to 35 degrees. In some embodiments, the angle a of the connecting rod 200 to the upper surface of the curb is equal to about 28 degrees. The user then performs a knife-setting of the cutting member 11 with the curb by the knife-setting plate 71. After the tool setting is completed, the user activates the power head 300 and the cutter 11 rotates. At this time, the cutting member 11 does not cut the soil or the cut soil is shallower. In this way, the cutter 11 will not stall due to too much resistance, and will not cause stalling of the motor. The user first sets the tool and then starts the power head 300, so that the cutting member 11 cannot collide with the curb, and the service life of the cutting member 11 is prolonged. After the cutting member 11 is rotationally stabilized, the cutting member 11 has sufficient cutting power. At this time, the user holds the handle to lift the connection bar 200, i.e., rotate the connection bar 200 upward about the rotation axis of the roller 5. At this time, the tool head 100 moves downward with respect to the roller 5, and the power head 300 moves upward with respect to the roller 5. The center of gravity of the tool head 100 is shifted in a direction away from the power head 300, and the force of the power tool 400 on the adjustment plate 3 gradually increases to be larger than the torsion force of the elastic means 6. The adjustment plate 3 is rotated relative to the shield 1 against the torsion force of the resilient means 6. At the same time, the cutter 11 is pressed down with the hood 1 and starts cutting earth and grass. The user adjusts the angle a at which the connecting rod 200 is lifted to adjust the cutting depth of the power tool 400. As the angle a at which the connecting rod 200 is lifted increases, the cutting depth of the power tool 400 increases. As the angle a at which the connecting rod 200 is lifted decreases, the cutting depth of the power tool 400 decreases. In this way, the power tool 400 can smoothly cut soil of different heights. The user pushes the power tool 400, and the power tool 400 cuts soil and grass along the trend of the curb under the condition of aligning the curb, so that the cutting effect is good and the operation is convenient. After finishing the cutting, the user presses the connecting rod 200 down, i.e., rotates the connecting rod 200 downward around the roller 5. At this time, the tool head 100 moves upward with respect to the roller 5, and the power head 300 moves downward with respect to the roller 5. The center of gravity of the tool head 100 is shifted in a direction approaching the power head 300, and the force of the power tool 400 on the adjustment plate 3 is gradually reduced to be smaller than the torsion force of the elastic means 6. The elastic means 6 drive the adjusting plate 3 to rotate relative to the shield 1 until the adjusting plate 3 is reset to the original state. In this way, it is ensured that the order of operation is unchanged when the user next uses the power tool 400. That is, the next time the user uses the power tool 400, the user's operation steps are still to set the tool first, then start the power head 300, and then operate the cutter 11 to press down to cut the soil.

It is apparent that the above examples of the present application are merely illustrative examples of the present application and are not limiting of the embodiments of the present application. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modifications, equivalent substitutions, improvements, etc. that fall within the spirit and principles of the present application are intended to be included within the scope of the claims of this application.

Claims (9)

1. A tool head (100), comprising:

a protective cover (1), at least part of the cutting piece (11) is rotatably arranged in the protective cover (1);

it is characterized in that the method comprises the steps of,

the protective cover (1) comprises a lower edge (14);

the tool head (100) further comprises:

an adjusting plate (3) rotatably arranged around a first axis (101);

the adjusting plate (3) comprises a contact surface (33) and an extension surface (34), the contact surface (33) being configured to abut against an upper surface of a curb, the extension surface (34) being configured to contact the lower edge (14);

the cutter setting plate (71) is fixedly connected with the adjusting plate (3), and the cutter setting plate (71) is configured to be attached to the side face of the curb;

-elastic means (6) configured to drive the rotation of the adjustment plate (3) in a direction away from the protective cover (1).

2. Tool head according to claim 1, characterized in that one end of the elastic means (6) is fixed relative to the protective cover (1), the other end of the elastic means (6) being fixed relative to the adjusting plate (3).

3. Tool head according to claim 1, characterized in that the tool head (100) comprises a dust cover (61) configured to accommodate at least part of the elastic means (6).

4. Tool head according to claim 1, characterized in that the adjusting plate (3) is provided with a limit groove (32), and the limit piece (21) passes through the limit groove (32) and is connected with the protective cover (1).

5. Tool head according to claim 1, characterized in that the tool setting plate (71) has a contour line (72), the contour line (72) being configured to be in contact with earth, at least part of the contour line (72) being substantially straight, at least part of the contour line (72) being an arc, the radius of the arc being greater than or equal to 15mm and less than or equal to 60mm.

6. Tool head according to claim 1, characterized in that the tool setting plate (71) is of integral construction with the adjusting plate (3).

7. Tool head according to claim 1, characterized in that the tool setting plate (71) is located on the side of the contact surface (33) close to the protective cover (1).

8. A power tool, characterized by comprising a power head (300), a connecting rod (200) and a tool head according to any one of claims 1-7, wherein the tool head (100) is in transmission connection with the cutting member (11), one end of the connecting rod (200) is connected with the power head (300), and the other end of the connecting rod (200) is connected with the protective cover (1).

9. The power tool of claim 8, wherein the power tool is an edger.

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