Microswitch protector and electric tool

Abstract

The utility model provides a microswitch protection piece and an electric tool, the microswitch protection piece is applied to a microswitch, the microswitch comprises a shell, a trigger installed on the shell and a driving piece movably arranged relative to the shell, and the driving piece is used for pushing and pressing the trigger to control on and off of the microswitch; the microswitch protection piece and the microswitch are arranged in a matched mode. The microswitch protection piece comprises a limiting part, and the limiting part is at least partially arranged on the side, away from the shell, of the driving piece and is configured to limit the maximum movement stroke of the driving piece in the direction away from the trigger to be not larger than a preset value. The microswitch protection piece limits the movement stroke of the driving piece, and the microswitch is prevented from being extruded and damaged.

Description

Technical Field

[0001] The present application relates to the technical field of garden tools, and in particular to a micro switch protection component and an electric tool. Background Art

[0002] An electronic brake mechanism is usually provided in an electric tool. The electronic brake mechanism is a safety device used to immediately stop the operation of the electric tool in the event of an emergency, so as to protect the safety of workers.

[0003] The electronic brake mechanism includes a micro switch and an external operating member. The micro switch is usually triggered by the movement of the external operating member to achieve brake control of the power tool.

[0004] However, during the assembly process of the electric tool, the micro switch is easily squeezed by other assembly parts and damaged. Utility Model Content

[0005] In order to solve the above technical problems, the present application proposes a micro switch protection component and an electric tool, which can effectively reduce the risk of the micro switch being damaged during the assembly process of the electric tool.

[0006] According to one aspect of the present application, the present application provides a micro switch protection member, which is applied to a micro switch, and the micro switch includes: a shell; a trigger, which is installed on the shell; and a driving member, which is movably arranged relative to the shell and is used to push the trigger to control the conduction and disconnection of the micro switch; the micro switch protection member is arranged in coordination with the micro switch; the micro switch protection member includes a limit portion; the limit portion is at least partially arranged on a side of the driving member away from the shell, and is configured to: limit the maximum movement stroke of the driving member in a direction away from the trigger to not more than a preset value.

[0007] Furthermore, the driving member includes a fixed end, a free end and a pressure rod extending between the fixed end and the free end; the fixed end is directly or indirectly connected to the shell; the free end rotates around the fixed end so that the pressure rod moves in a direction close to or away from the trigger, and the pressure rod forms a target plane during the movement; the maximum movement stroke is the maximum rotation angle of the pressure rod around the fixed end on the target plane in a direction away from the trigger, and the preset value is a preset angle value.

[0008] Furthermore, the preset angle value is 3 to 12 degrees.

[0009] Furthermore, the limiting portion is fixedly arranged relative to the shell; the limiting portion includes a blocking surface, which is used to abut against the driving member and block the movement of the driving member away from the trigger, so as to limit the maximum movement stroke of the driving member away from the trigger.

[0010] Furthermore, the limiting portion includes a protective plate, which is disposed on a side of the driving member away from the housing and is configured to shield the trigger in at least one direction from the side away from the housing.

[0011] Furthermore, the micro switch protection member also includes a connection structure;

[0012] The limiting portion is connected to the connecting structure and is supported by the connecting structure and disposed on the housing.

[0013] Furthermore, the micro switch protection member is detachably arranged on the housing through the connection structure. A convex element is protrudingly arranged on one of the housing and the connection structure, and a hole or a groove matching with the convex element is arranged on the other; the convex element is engaged with the hole or the groove to assemble and connect the micro switch protection member with the housing.

[0014] The micro switch protection member of this embodiment limits the driving member by the limiting portion, so that the driving member of the micro switch will not open at too large an angle. Therefore, it is not easy to collide or squeeze with other parts during the assembly of the electric tool to cause damage to the micro switch, and the micro switch can be protected.

[0015] According to another aspect of the present application, the present application provides an electric tool, comprising: a casing; and an electronic brake mechanism; the electronic brake mechanism comprises: a micro switch, installed in the casing, comprising a shell, a trigger installed on the shell and a driving member movably arranged relative to the shell; the driving member is used to push the trigger to control the conduction and disconnection of the micro switch; a brake operating part, installed in the casing, comprising a cantilever, the cantilever is movably arranged relative to the casing, and is used to abut against the driving member and drive the driving member to move to push the trigger; and a micro switch protection member, which is arranged in cooperation with the micro switch, the micro switch protection member comprises a limit part, the limit part is at least partially arranged on the side of the driving member away from the shell, and is configured to: limit the maximum movement stroke of the driving member in the direction away from the trigger to not more than a preset value.

[0016] Furthermore, the brake operating part also includes an operating member, the operating member extends out of the housing, and the cantilever is arranged in the housing; the brake operating part is pivotally mounted on the housing around a rotation axis; the brake operating part is configured as follows: the operating member pivots around the rotation axis, driving the cantilever to pivot around the rotation axis; the cantilever includes a cantilever contact for abutting with the driving member at an initial abutting position, and the driving member includes a driving member contact for abutting with the cantilever at the initial abutting position, wherein the initial abutting position is: a position where the cantilever abuts with the driving member and no pressure is applied to the driving member; when no external force acts on the brake operating part and the driving member, the distance between the cantilever contact and the driving member contact is 1 to 5 mm.

[0017] The electric tool of this embodiment limits the driving component by the micro switch protection component, so that the driving component of the micro switch will not open at too large an angle. Therefore, it is not easy to collide or squeeze with other components during the assembly of the electric tool to cause damage to the micro switch, which can protect the micro switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an electric tool in the prior art;

[0019] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0020] Figure 3 A side view of a micro switch according to an embodiment of the present application;

[0021] Figure 4 A three-dimensional diagram of a micro switch protection member according to an embodiment of the present application;

[0022] Figure 5 A three-dimensional diagram of a micro switch and a micro switch protection member in an assembled state provided in one embodiment of the present application;

[0023] Figure 6 A schematic diagram of the structure of an electric tool provided in one embodiment of the present application;

[0024] Figure 7 for Figure 5 Enlarged view of point B in the middle.

[0025] Marking Description:

[0026] 1. Power tool; 10. Micro switch; 110. Housing; 120. Trigger; 130. Driving member; 131. Pressure rod; 20. Micro switch protection member; 210. Limiting portion; 211. Blocking surface; 212. Protective plate; 213. Connecting structure; 214. Pin element; 215. Groove; 30. Housing; 40. Cantilever; 50. Brake operating portion; 51. Operating member. DETAILED DESCRIPTION

[0027] The present application will be described in detail below in conjunction with the specific implementations shown in the accompanying drawings. However, these implementations do not limit the present application, and any structural, methodological, or functional changes made by a person of ordinary skill in the art based on these implementations are all included in the protection scope of the present application.

[0028] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] like Figure 1 and Figure 2 As shown, in the electric tool 1, such as a pruning machine, a chain saw, etc., an electronic brake mechanism is provided, and the electronic brake mechanism is used to stop the electric tool in an emergency, so that the electric tool stops working. The electronic brake mechanism includes a micro switch 10 and a brake operating part 50, the micro switch 10 is located inside the housing 30 of the electric tool 1, and the brake operating part 50 includes an operating member 51 for braking that is at least partially located outside the housing 30 of the electric tool 1 and a cantilever 40 that is located inside the housing 30 of the electric tool 1 and can abut against the micro switch 10. When the user needs to brake the electric tool 1 in an emergency, the operating member 51 at one end of the brake operating part 50 is manually moved, so that the cantilever 40 at the other end of the brake operating part 50 controls the micro switch 10, and the control module receives the switch signal from the micro switch 10 to control the start and stop of the motor.

[0030] The micro switch 10 includes a housing 110, a trigger 120 and a driving member 130. The trigger 120 is located on the housing 110. The driving member 130 is movably arranged relative to the housing 110. The driving member 130 can push the trigger 120 to control the conduction and disconnection of the micro switch 10. The driving member 130 includes a fixed end, a free end and a pressure rod 131 extending between the fixed end and the free end. The fixed end is fixedly connected to the housing 110, and the free end can rotate relative to the fixed end. When the free end rotates, the pressure rod 131 will squeeze the trigger 120. The brake operating part 50 of the electric tool 1 is operated to rotate the driving member 130 to control the micro switch 10. Since the driving member 130 of the micro switch 10 has a large inclination angle relative to the housing 110, in the process of assembling other components of the electric tool, especially the brake operating part 50, it is easy to collide or squeeze with the driving member 130, resulting in damage or deformation of the driving member 130, further causing the electronic brake to fail.

[0031] In order to solve the above technical problems, the present application provides a micro switch protection member, which can effectively reduce the risk of the micro switch being damaged during the assembly process of the power tool.

[0032] Combination Figure 3 and Figure 4 As shown, in one embodiment of the present application, a micro switch protection member 20 is proposed, which is applied to a micro switch 10, wherein the micro switch 10 includes a housing 110, a trigger 120 and a driving member 130, wherein the trigger 120 is mounted on the housing 110, and the driving member 130 is movably arranged relative to the housing 110, and is used to push the trigger 120 to control the conduction and disconnection of the micro switch 10; the micro switch protection member 20 is arranged in coordination with the micro switch 10; the micro switch protection member 20 includes a limiting portion 210; the limiting portion 210 is at least partially arranged on a side of the driving member 130 away from the housing 110, and is configured to limit the maximum movement stroke of the driving member 130 in a direction away from the trigger 120 to not more than a preset value.

[0033] The micro switch protection member 20 limits the maximum movement stroke of the driver 130 in the direction away from the trigger 120. If the maximum movement stroke is large, the inclination angle of the driver 130 of the micro switch 10 relative to the housing 110 is large. When the brake operating part 50 and the micro switch 10 are installed, the projections of the driver 130 and the brake operating part 50 on the plane perpendicular to the rotation axis of the brake operating part 50 will partially overlap, causing the cantilever 40 of the brake operating part 50 to squeeze the pressure rod 131 of the driver 130, causing damage. If the maximum movement stroke is too large, the inclination angle of the driver 130 of the micro switch 10 relative to the housing 110 is too large, and the brake operating part 50 may not be able to abut against the driver 130, and the brake cannot be activated. Therefore, in order to ensure the stability of the abutment between the brake operating part 50 and the driver 130 and avoid the problem of failure of the electronic brake, the micro switch protection member 20 is installed on the outside of the micro switch 10.

[0034] like Figure 2 As shown, the plane formed by the X direction and the Y direction is a plane perpendicular to the rotation axis of the brake operating part 50 .

[0035] In one embodiment of the present application, Figure 3 As shown, the driving member 130 includes a fixed end, a free end, and a pressure rod 131 extending between the fixed end and the free end; the fixed end is directly or indirectly connected to the housing 110; the free end rotates around the fixed end so that the pressure rod 131 moves in a direction close to or away from the trigger 120, and the pressure rod 131 forms a target plane during the movement; the maximum movement stroke is the maximum rotation angle of the pressure rod 131 around the fixed end in the direction away from the trigger 120 on the target plane, and the preset value is a preset angle value. The micro switch protection member 20 achieves the purpose of limiting the movement stroke of the driving member 130 by limiting the position of the free end.

[0036] Specifically, the trigger 120 is a push-type electronic switch, and the driving member 130 is an elastic metal sheet. The fixed end of the driving member 130 is fixedly connected to the shell 110, and its free end can rotate around the fixed end. The rotation trajectory is distributed on a plane with the fixed end as the center of the circle, and the plane is the target plane. The rotation angle of the pressure rod 131 refers to the angle of the rotation trajectory of the pressure rod 131 on the target plane. When the free end of the pressure rod 131 is abutted and force is applied, the pressure rod 131 starts to rotate, but if the rotation angle of the pressure rod 131 is too large, the brake operating part 50 that cooperates with the pressure rod 131 will squeeze the pressure rod 131 during assembly to cause damage, or after the assembly is completed, the brake operating part 50 is difficult to abut the free end of the pressure rod 131, and the micro switch 10 cannot be started. Therefore, a preset value is set to ensure that the pressure rod 131 is stably pushed to the trigger 120, and the rotation angle of the pressure rod 131 is controlled within the preset value by using the micro switch protection member 20 to prevent the pressure rod 131 from being squeezed and damaged.

[0037] In another embodiment, the driving member 130 is indirectly connected to the housing 110, and the movement stroke of the driving member 130 is in the form of translation, moving in the force direction of the push trigger 120; the maximum movement stroke is the translation distance of the pressure rod 131 in the force direction of the push trigger 120, and the preset value is a preset distance value. In other embodiments, the movement form of the driving member 130 on the micro switch 10 is not limited.

[0038] In one embodiment of the present application, the preset angle value is 3 to 12 degrees.

[0039] It should be noted that if Figure 3 As shown, Figure 3 The angle α is the preset angle value. When the preset angle is between 3 and 12 degrees, the micro switch protection member 20 limits the maximum rotation angle of the pressure rod 131 to between 3 and 12 degrees, ensuring that there is no overlapping portion between the projections of the pressure rod 131 and the cantilever 40 of the brake operating part 50 on a plane perpendicular to the rotation axis of the brake operating part 50. Therefore, when assembling the power tool 1 or using the electronic brake, the pressure rod 131 and the brake operating part 50 will not squeeze each other.

[0040] Specifically, when the pressure rod 131 is in the target plane, the angle between the original position of the pressure rod 131 and the trigger position of the pressure rod 131 is 3 to 12 degrees. In a specific embodiment, the maximum rotation angle of the pressure rod 131 on the target plane around the fixed end in the direction away from the trigger 120 is 3 degrees, or the maximum rotation angle of the pressure rod 131 on the target plane around the fixed end in the direction away from the trigger 120 is 8 degrees, or the maximum rotation angle of the pressure rod 131 on the target plane around the fixed end in the direction away from the trigger 120 is 12 degrees.

[0041] In one embodiment of the present application, Figure 4 and Figure 5 As shown, the limit portion 210 is fixedly arranged relative to the shell 110; the limit portion 210 includes a blocking surface 211, which is used to abut against the driving member 130 and block the movement of the driving member 130 in the direction away from the trigger 120, so as to limit the maximum movement stroke of the driving member 130 in the direction away from the trigger 120, thereby preventing the driving member 130 from exceeding the maximum movement stroke.

[0042] Specifically, the limiting portion 210 is relatively fixed to the housing 110, and the blocking surface 211 in the limiting portion 210 faces the driving member 130 and is arranged on the movement stroke of the driving member 130. When the driving member 130 moves to the blocking surface 211, it can no longer move further, thereby achieving a limiting effect. The position of the blocking surface 211 on the movement stroke is set according to the maximum movement stroke of the driving member 130.

[0043] In one embodiment of the present application, Figure 4As shown, the limiting portion 210 includes a protective plate 212 , which is disposed on a side of the driving member 130 away from the housing 110 and configured to shield the trigger 120 from the side away from the housing 110 in at least one direction.

[0044] Specifically, the protective plate 212 is disposed on a side of the driving member 130 away from the housing 110, thereby limiting the range of movement of the driving member 130 to a position away from the housing 110 and shielding the trigger 120 on at least one side. The protective plate 212 prevents other parts from squeezing the micro switch 10 and causing damage during installation.

[0045] In a specific embodiment, the blocking surface 211 is a surface of the protection plate 212 that is opposite to the housing 110 .

[0046] In one embodiment of the present application, Figure 5 As shown, the micro switch protection member 20 further includes a connection structure 213; the limit portion 210 is connected to the connection structure 213 and supported and arranged on the housing 110 through the connection structure 213. The connection structure 213 is used to connect the micro switch protection member 20 and the micro switch 10. The connection structure 213 is connected to the housing 110 and the limit portion 210 at the same time, supporting the limit portion 210 to be relatively fixed with the housing 110, and ensuring the position of the limiting driving member 130.

[0047] In one embodiment of the present application, the micro switch protection member 20 is detachably disposed on the housing 110 via a connection structure 213 , so as to facilitate replacement and installation of the micro switch protection member 20 .

[0048] In one embodiment of the present application, a protruding piece is protruding from one of the shell 110 and the connecting structure 213, and a hole or a groove matching with the protruding piece is provided on the other; the protruding element is engaged with the hole or the groove to assemble and connect the micro switch protection member 20 with the shell 110, and a detachable connection is achieved by using the protruding piece and the matching hole or groove.

[0049] In a specific embodiment, a convex element is provided on the housing 110 and a groove is provided on the connecting structure 213. After the micro switch protector 20 and the micro switch 10 are installed, the convex element and the groove are in a state of being engaged with each other.

[0050] In another embodiment, the housing 110 and the connection structure 213 are connected by screws or by bonding. In other embodiments, the connection method of the housing 110 and the connection structure 213 is not limited.

[0051] In a specific embodiment, if Figure 5As shown, the connection structure 213 includes a first side plate and a second side plate respectively connected to both sides of the limit portion 210. When the micro switch protection member 20 is connected to the micro switch 10, the first side plate is opposite to the first surface of the micro switch 10, and the second side plate is opposite to the second surface of the micro switch 10. The first side plate is provided with a groove 215 in a direction parallel to the first surface, and a pin element 214 is provided on the first surface. After the pin element 214 is engaged in the groove 215, the pin element 214 is fixed in the groove 215. In addition, the second side plate is provided with a slide groove, and the second surface is provided with a slide seat matched with the slide groove, and the slide groove and the slide seat extend in the direction relative to the limit portion 210 and the trigger 120. When the micro switch 10 and the micro switch protection member 20 are installed, the slide groove and the slide seat are engaged with each other and slide along the extension direction until the distance between the limit portion 210 and the driving member 130 meets the requirement of the maximum motion stroke, or until the pin element 214 on the first surface is engaged in the groove 215.

[0052] Based on the same concept, Figure 6 and Figure 7 As shown, an electric tool 1 is also proposed, which includes a housing 30 and an electronic brake mechanism; the electronic brake mechanism includes: a micro switch 10, which is installed in the housing 30, and the micro switch 10 includes a shell 110, a trigger 120 installed on the shell 110, and a driving member 130 movably arranged relative to the shell 110; the driving member 130 is used to push the trigger 120 to control the conduction and disconnection of the micro switch 10; a brake operating part 50, which is installed in the housing 30, includes a cantilever 40, and the cantilever 40 is movably arranged relative to the housing 30, and is used to abut against the driving member 130 and drive the driving member 130 to move to push the trigger 120; and a micro switch protection member 20, which is arranged in cooperation with the micro switch 10, and the micro switch protection member 20 includes a limit part 210, and the limit part 210 is at least partially arranged on a side of the driving member 130 away from the housing 110, and is configured to: limit the maximum movement stroke of the driving member 130 in a direction away from the trigger 120 to not more than a preset value. The electric tool 1 utilizes the brake operating part 50 to abut the driving member 130 to realize electronic braking, and utilizes the micro switch protection part 20 to limit the movement stroke of the driving member 130. The micro switch protection part 20 limits the distance of the driving member 130 away from the housing 110 to avoid that when the brake operating part 50 is installed, if the movement stroke of the driving member 130 is too large, the projections of the driving member 130 and the cantilever 40 on the plane perpendicular to the rotation axis of the cantilever 40 will partially overlap, causing the cantilever 40 to squeeze the driving member 130.

[0053] The following uses a chain saw as an example to illustrate the structure of the electric tool of the present application. The chain saw is a garden handheld tool, which is usually used to cut wood. This example is only used as an example and does not limit the technical scope of the present application.

[0054] The chain saw includes a main body and a power supply device, and the main body includes a housing 30, a guide plate, a chain, an electronic brake mechanism, etc. The electronic brake mechanism is usually provided in the chain saw, which is mainly used to immediately stop the power tool when an emergency occurs, so as to protect the safety of workers.

[0055] Specifically, the chain saw uses the micro switch 10 to realize the electronic brake function. When the user needs to brake, he moves the cantilever 40 to push the driving member 130 to rotate, and the driving member 130 controls the opening and closing of the micro switch 10 by pushing the trigger 120. The micro switch protection member 20 limits the position of the driving member 130 to prevent the end of the cantilever 40 close to the micro switch 10 from squeezing the driving member 130 and damaging the driving member 130 when the power tool is installed.

[0056] The brake operating part 50 also includes an operating member 51, which extends out of the housing 30, and the cantilever 40 is arranged in the housing 30; the brake operating part 50 is pivotally installed on the housing 30 around a rotation axis; the brake operating part 50 is configured as follows: the operating member 51 pivots around the rotation axis and drives the cantilever 40 to rotate; the cantilever 40 includes a cantilever 40 contact for abutting with the driving member 130 at an initial abutting position, and the driving member 130 includes a driving member 130 contact for abutting with the cantilever 40 at an initial abutting position, wherein the initial abutting position is: the cantilever 40 and the driving member 130 abut each other but the cantilever 40 does not apply pressure to the driving member 130; when there is no external force acting on the brake operating part and the driving member 130, the distance between the cantilever 40 contact and the driving member 130 contact is 1 to 5 mm.

[0057] Specifically, the force of the user's braking action is transmitted between the operating member 51, the cantilever 40 and the driving member 130. When the user needs to brake, the user applies force to the operating member 51 outside the housing 30 to move the cantilever 40 inside the housing 30, and the cantilever 40 then abuts against the driving member 130. During the force application process, the pivoting rotation of the operating member 51 drives the cantilever 40 to rotate, so that the contact point of the cantilever 40 contacts the contact point of the driving member 130, and then pushes the driving member 130 to push the trigger 120.

[0058] In a specific embodiment, the distance between the contact of the cantilever 40 and the contact of the driving member 130 is 1 mm, or the distance between the contact of the cantilever 40 and the contact of the driving member 130 is 3 mm, or the distance between the contact of the cantilever 40 and the contact of the driving member 130 is 5 mm.

[0059] It should be noted that "some body" or "some part" can be a part of the corresponding "component", that is, "some body" or "some part" can be integrally formed with the "other parts of the component"; it can also be an independent component that can be separated from the "other parts of the component", that is, "some body" or "some part" can be manufactured independently and then combined with the "other parts of the component" into a whole. The expression of the above-mentioned "some body" or "some part" in this application is only one of the implementation methods, for the convenience of reading, and not to limit the scope of protection of this application. As long as it contains the above-mentioned features and has the same function, it should be understood as an equivalent technical solution of this application.

[0060] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims.

[0061] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. This narrative style of the specification is merely for the sake of clarity, and those skilled in the art should take the specification as a whole. Under the concept of the present application, the above embodiments or the technical features in different embodiments may also be appropriately combined, and there are many other variations in different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0062] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A micro switch protection member, applied to a micro switch, the micro switch comprising: case; a trigger, mounted on the housing; and a driving member, movably arranged relative to the housing, for pushing the trigger to control the on and off of the micro switch; Characterized in that the micro switch protection member is arranged in cooperation with the micro switch; The micro switch protection member includes a limiting portion; The limiting portion is at least partially disposed on a side of the driving member away from the housing, and is configured to limit a maximum movement stroke of the driving member in a direction away from the trigger to not exceed a preset value.

2. The micro switch protection member according to claim 1, characterized in that: The driving member includes a fixed end, a free end, and a pressure rod extending between the fixed end and the free end; The fixed end is directly or indirectly connected to the housing; The free end performs a rotational motion around the fixed end, so that the pressure rod moves in a direction close to or away from the trigger, and the pressure rod forms a target plane during the movement; The maximum movement stroke is the maximum rotation angle of the pressure rod on the target plane around the fixed end in a direction away from the trigger, and the preset value is a preset angle value.

3. The micro switch protection member according to claim 2, characterized in that: The preset angle value is 3 to 12 degrees.

4. The micro switch protection member according to claim 1, characterized in that: The limiting portion is fixedly arranged relative to the housing; The limiting portion includes a blocking surface, which is used to abut against the driving member and block the movement of the driving member in a direction away from the trigger, so as to limit the maximum movement stroke of the driving member in a direction away from the trigger.

5. The micro switch protection member according to claim 1 or 4, characterized in that: The limiting portion includes a protective plate, which is disposed on a side of the driving member away from the housing and is configured to shield the trigger in at least one direction from the side away from the housing.

6. The micro switch protection member according to claim 1, characterized in that: The micro switch protection member also includes a connecting structure; The limiting portion is connected to the connecting structure and is supported by the connecting structure and disposed on the housing.

7. The micro switch protection member according to claim 6, characterized in that: The micro switch protection piece is detachably arranged on the housing through the connection structure.

8. The micro switch protection member according to claim 7, characterized in that: A convex element is protrudingly provided on one of the housing and the connecting structure, and a hole or a groove matching with the convex element is provided on the other; The convex element is engaged with the hole or the groove to assemble and connect the micro switch protection member with the housing.

9. An electric tool, characterized in that: include: chassis; and electronic brake mechanism; The electronic brake mechanism comprises: A micro switch is installed in the housing, comprising a housing, a trigger installed on the housing, and a driving member movably arranged relative to the housing; the driving member is used to push the trigger to control the on and off of the micro switch; A brake operating part, mounted on the housing, comprising a cantilever, the cantilever being movably arranged relative to the housing, and being used to abut against the driving member and drive the driving member to move so as to push the trigger; And a micro switch protection member is arranged in cooperation with the micro switch, the micro switch protection member includes a limit portion, the limit portion is at least partially arranged on a side of the driving member away from the shell, and is configured to: limit the maximum movement stroke of the driving member in a direction away from the trigger to no more than a preset value.

10. The electric tool according to claim 9, characterized in that: The brake operating part further includes an operating member, the operating member extends out of the housing, and the cantilever is arranged in the housing; The brake operating part is pivotally mounted on the housing about a rotation axis; The brake operating part is configured as follows: the operating member pivots around the rotation axis, driving the cantilever to pivot around the rotation axis; The cantilever comprises a cantilever contact for abutting against the driving member at an initial abutting position, and the driving member comprises a driving member contact for abutting against the cantilever at the initial abutting position, wherein the initial abutting position is a position where the cantilever abuts against the driving member without applying pressure to the driving member; When no external force acts on the brake operating part and the driving member, the distance between the cantilever contact and the driving member contact is 1 to 5 mm.

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