CN212750655U

CN212750655U - Switch assembly and electric tool

Info

Publication number: CN212750655U
Application number: CN202021434911.2U
Authority: CN
Inventors: 戈兰·武契
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-03-19
Anticipated expiration: 2030-07-20

Abstract

The utility model provides a switch module and electric tool. The switch assembly comprises a shell, a main control switch accommodated in the shell, and a locking switch and a trigger switch which are installed on the shell, wherein one end of the trigger switch is exposed outside the shell, the other end of the trigger switch is accommodated in the shell and is contacted with the main control switch, one end of the locking switch is exposed outside the shell, the other end of the locking switch is contacted with the trigger switch, the locking switch is provided with a locking position and a releasing position, when the locking switch is positioned at the locking position, the locking switch limits the action of the trigger switch, the trigger switch is in a locking state, and the; when the locking switch is located at the releasing position, the locking switch is located beside the trigger switch and the limitation is removed, the trigger switch is in the releasing state, and the main control switch can be started. Compared with the prior art, the utility model discloses a switch module is in the locking state under the non-user state always, can not lead to improper start because of pressing down unintentionally, and factor of safety is high.

Description

Switch assembly and electric tool

Technical Field

The utility model relates to a switch module and electric tool belongs to garden instrument technical field.

Background

Currently, a starting switch is usually arranged on a handle gripped by a user, and when the electric tool is used, the starting switch can be accidentally pressed when the electric tool is held by the user and is not used, so that the electric tool is started under abnormal conditions, and dangerous conditions are caused.

The conventional starting switch is arranged below the handle and is arranged downwards, when the electric tool is used, the electric tool can be started by pressing the starting switch upwards while holding the handle, and the conventional safety switch is mainly of a linkage type, namely if the starting switch needs to be actuated, the safety switch needs to be pressed, pulled or rotated firstly, at the moment, the locking of the starting switch by the safety switch is released, and then a user can actuate the starting switch to start the tool; the switch assembly based on the technical design is widely applied to the field of electric tools, wherein the grasping type switch assembly is the most common, the safety switch of the switch assembly is arranged above the handle starting switch in an opposite mode and is arranged upwards, when a user uses the switch assembly, the user can press the safety switch and then press the starting switch by holding the tool handle, and therefore the grasping type switch is simple in structure and convenient to use, and can be widely applied to the field of electric tools.

However, the above-mentioned grasping switch assembly has the disadvantage that the actions of the starting safety switch and the actuating starting switch cannot be distinguished significantly when in use, and the starting switch is actuated by mistake, so that a dangerous situation occurs.

In view of the above, there is a need for an improved safety switch to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a switch module, this switch module is in the locking state under non-user state, can not lead to improper start because of being pressed unintentionally.

In order to achieve the above object, the present invention provides a switch assembly, including a housing, a main control switch accommodated in the housing, and a locking switch and a trigger switch installed on the housing, wherein one end of the trigger switch is exposed outside the housing, the other end of the trigger switch is accommodated in the housing and contacts with the main control switch, one end of the locking switch is exposed outside the housing, the other end of the locking switch contacts with the trigger switch, the locking switch has a locking position and a releasing position, when the locking switch is located at the locking position, the locking switch and the trigger switch are oppositely arranged and limit the action of the trigger switch, the trigger switch is in the locking state, and the main control switch cannot be started; when the locking switch is located at the releasing position, the locking switch is located beside the trigger switch and removes the limitation, the trigger switch is in the releasing state, and the main control switch can be started.

As a further improvement of the present invention, the trigger switch includes a contact portion contacting with the main control switch and a holding portion exposed outside the housing, the lock switch includes a pressing portion exposed outside the housing and an abutting portion contacting with the trigger switch, and when the lock switch is located at the lock position, the abutting portion abuts against an inner side wall of the holding portion; when the locking switch is located at the releasing position, the abutting part deviates to the side of the holding part and releases the abutting, and after the holding part is operated, the contact part triggers the main control switch to enable the main control switch to be started.

As a further improvement of the utility model, an accommodating cavity is arranged in the holding part, and the abutting part is contacted with the top wall of the holding part in a locking state; in the release state, the abutting part is positioned above the accommodating cavity.

As a further improvement of the utility model, the locking switch is still including connecting press the splenium and the rotation portion to the top, the rotation portion is installed on the casing and can for casing skew and rotation press when pressing the splenium, to the top synchronous rotation.

As a further improvement of the present invention, a first elastic member and a second elastic member for driving the locking switch to reset are further disposed in the housing, one end of the first elastic member abuts against the inner side wall of the housing, and the other end abuts against the rotating portion, when the locking switch is deviated relative to the housing, the first elastic member is deformed, and the abutting portion moves to the accommodating cavity; the second elastic piece is sleeved on the rotating portion, one end of the second elastic piece is abutted to the inner side wall of the shell, the other end of the second elastic piece is fixed to the pressing portion, and when the pressing portion is pressed, the second elastic piece deforms, and the abutting portion enters the accommodating cavity and rotates synchronously in the accommodating cavity.

As a further improvement, first elastic component and second elastic component are established the both sides of rotation portion, the both sides of rotation portion all are equipped with and are used for spacing fixed the stopper of first elastic component and second elastic component, be formed with the fixed block on pressing the splenium, the fixed block is the setting of type of falling L, with fixed block and pressing and forming fixed chamber between the splenium, the other end of second elastic component is spacing to be acceptd fixed intracavity.

As a further improvement of the utility model, the trigger switch is still including connecting the connecting portion of contact site and the portion of gripping, connecting portion are installed on the casing and can for the casing rotates, in order to operate during the portion of gripping, drive in step the contact site triggers master switch makes master switch starts.

As a further improvement, the master switch is the push type setting to including this somatic part and the flexible arm that links to each other with this somatic part, trigger switch's contact site is in the top of flexible arm, with the contact is pressed down start during the flexible arm master switch.

As a further improvement of the utility model, the master switch is a micro switch.

An object of the utility model is to provide an electric tool, this electric tool's switch module is in the locking state under the non-user state, can not lead to improper start because of being pressed by accident.

In order to achieve the above object, the present invention provides an electric tool, which includes the switch assembly to control the start or close of the motor.

The beneficial effects of the utility model reside in that: under the non-use state, the trigger switch and the locking switch are mutually abutted to enable the locking switch to be located at the locking position and the trigger switch to be located at the locking state, and at the moment, the main control switch cannot be started; when the locking switch is normally started, the locking switch is firstly deflected towards one side until the locking switch is released from abutting with the trigger switch, and then the main control switch can be started by respectively pressing the locking switch and the trigger switch; compared with the prior art, the utility model is not only simple in structure, convenient operation, the switch module is in the locking state under non-user state moreover always, can not lead to improper start because of being pressed by accident, and factor of safety is higher.

Drawings

Fig. 1 is a perspective view of some power tools to which the switch assembly of the present invention is applied.

Fig. 2 is a perspective view of the switch assembly of the present invention.

Fig. 3 is an exploded view of the switch assembly shown in fig. 2.

Fig. 4 is an exploded view of the housing of fig. 3.

Fig. 5 is an enlarged view of fig. 4 at the location of the first penetration.

Fig. 6 is another exploded angular view of the housing of fig. 3.

Fig. 7 is a perspective view of the trigger switch of fig. 3.

Fig. 8 is a perspective view of the locking switch of fig. 3.

Fig. 9 is another angular perspective view of the locking switch of fig. 8.

Fig. 10 is a combination structure diagram of the lock switch, the trigger switch, and the main control switch in the locked state when they are engaged with each other.

Fig. 11 is a combination structure diagram of the lock switch, the trigger switch and the main control switch in the release state when they are engaged with each other.

Fig. 12 is a flow chart of a method for starting the switch assembly according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The present invention discloses an electric tool, which may be the electric tool such as the pruner, the electric saw, the blower, the chain saw or the grass trimmer shown in fig. 1, or may be a handheld electric tool of other types, and the present invention is not limited thereto.

In fig. 1, these power tools are operable with the switch assembly 10 of the present invention. The switch assembly 10 is provided in the form of a graspable handle for operation by a user. The specific structure of the power tool is not limited herein because of the wide variety of applicable power tools, and the following description will mainly describe the specific structure and activation method of the switch assembly 10 in detail.

As shown in fig. 2 and 3, the switch assembly 10 includes a housing 11, a main control switch 12 accommodated in the housing 11, and a locking switch 13 and a trigger switch 14 mounted on the housing 11, wherein one end of the locking switch 13 is exposed outside the housing 11, the other end of the locking switch 13 contacts (abuts) the trigger switch 14, one end of the trigger switch 14 is also exposed outside the housing 11, and the other end of the trigger switch 14 is accommodated in the housing 11 and contacts the main control switch 12. Preferably, in the present application, the locking switch 13 and the trigger switch 14 are both push type triggers, which are mainly used to cooperate with each other to trigger the main switch 12, so that the main switch 12 is activated, and then the motor (not shown) is controlled to be activated or deactivated.

As shown in fig. 4 to 6 in combination with fig. 2 and 3, the housing 11 includes a first housing 111 and a second housing 112 assembled and fixed to each other in the left-right direction, and the main switch 12 is accommodated in an accommodation space (not numbered) defined by the first housing 111 and the second housing 112. Preferably, a fixing portion 113 is disposed on an inner side wall of the second housing 112, an accommodating groove 114 communicated with the accommodating space is disposed in the fixing portion 113, and the main switch 12 is limited and accommodated in the accommodating groove 114. In this embodiment, the first housing 111 and the second housing 112 are fastened and fixed to each other by bolts and nuts, but not limited thereto.

A first penetrating and inserting piece 115 and a limiting piece 116 arranged around the first penetrating and inserting piece 115 are arranged on the inner side wall of the first shell 111, and the first penetrating and inserting piece 115 is arranged close to the top of the first shell 111 and used for installing the locking switch 13; the limiting member 116 and the first penetrating member 115 are disposed at an interval, so as to form a limiting cavity 117 between the first penetrating member 115 and the limiting member 116. A second penetrating and inserting piece 118 is arranged on the inner side wall of the second shell 112, and the second penetrating and inserting piece 118 is arranged near the middle of the second shell 112 and used for installing the trigger switch 14. In the present application, the first penetrating piece 115 and the second penetrating piece 118 are both disposed in a cylindrical shape.

The handle 110 is formed after the first shell 111 and the second shell 112 are assembled, the locking switch 13 is located at the top of the handle 110 and partially protrudes out of the handle 110, and the trigger switch 14 is located at the bottom of the handle 110 and partially protrudes out of the handle 110, so that when the switch assembly 10 is started, the handle 110 is directly held, the trigger switch 14 is pressed upwards by a forefinger while the locking switch 13 is pressed downwards, and then the main control switch 12 can be started, and the operation is simple and convenient.

As shown in fig. 3, the main switch 12 is configured in a press type, and includes a main body 121 and a telescopic arm 122 connected to the main body 121, and the telescopic arm 122 is elastically configured to be automatically reset after releasing the press. In this application, master switch 12 is micro-gap switch, trigger switch 14's one end is located the top of flexible arm 122, so that utilize trigger switch 14 triggers (presses) flexible arm 122 makes master switch 12 starts.

As shown in fig. 7 in combination with fig. 3 and 6, the trigger switch 14 includes a contact portion 141 contacting the telescopic arm 122 of the main switch 12, a holding portion 142 exposed below the housing 11, and a connecting portion 143 connecting the contact portion 141 and the holding portion 142, wherein the holding portion 142 is located at the first end 140 of the trigger switch 14, and the contact portion 141 is located at the second end 140' of the trigger switch 14. The connecting portion 143 is mounted on the second insertion member 118 of the second housing 112, so that the connecting portion 143 can rotate relative to the housing 11, and when the holding portion 142 is gripped, the contact portion 141 can be synchronously driven to press the telescopic arm 122 of the main control switch 12 downward, so that the main control switch 12 is started.

The contact portion 141 is located above the telescopic arm 122 and has a smaller thickness, and the lower surface of the contact portion 141 is substantially planar, so that when the holding portion 142 is gripped, the contact portion 141 can be synchronously driven to trigger the telescopic arm 122 of the main control switch 12 downwards, so that the main control switch 12 is stably started. The connecting portion 143 is arranged substantially in a semicircular shape so as to rotate within the housing 11; the connecting portion 143 is provided with a through hole 144 for the second penetrating insert 118 to pass through, the second penetrating insert 118 and the through hole 144 are both arranged in a circular shape, and the diameter of the through hole 144 is larger than that of the second penetrating insert 118, so that the trigger switch 14 can rotate around the second penetrating insert 118 conveniently. The holding portion 142 needs to protrude out of the housing 11, so the thickness of the holding portion 142 is large, which is convenient for an operator to hold.

The holding portion 142 of the trigger switch 14 has a receiving cavity 145 formed therein, and the receiving cavity 145 communicates the connecting portion 143 with the holding portion 142. The accommodating cavity 145 is arranged so that a first side wall 146 and a second side wall 147 are formed on the trigger switch 14, and the accommodating cavity 145 is located between the first side wall 146 and the second side wall 147; in other words, the receiving cavity 145 is formed to be depressed downward from the top middle position of the trigger switch 14.

As shown in fig. 8 and 9 in combination with fig. 3 to 5, the locking switch 13 includes a pressing portion 131 exposed above the housing 11, a butting portion 132 contacting (butting) the trigger switch 14, and a rotating portion 133 connecting the pressing portion 131 and the butting portion 132, and the rotating portion 133 is mounted on the first insertion-through member 115 of the first housing 111, so that the rotating portion 133 can shift and rotate relative to the housing 11, and thus the butting portion 132 can be synchronously driven to rotate when the pressing portion 131 is pressed.

The pressing part 131 is of a T-shaped structure, and includes a pressing plate 1311 extending horizontally in a flat plate shape and an extending plate 1312 extending vertically downward from the middle position of the bottom of the pressing plate 1311, and the pressing plate 1311 is exposed outside the housing 11 and is pressed manually by an operator; the extension plate 1312 is half exposed outside the housing 11 in an initial state, and the extension plate 1312 is retracted into the housing 11 after the operator manually presses the pressing plate 1311. A fixing block 1313 is formed at the bottom of the extension plate 1312, and the fixing block 1313 is disposed in an inverted L shape to form a fixing cavity 1314 between the fixing block 1313 and the pressing part 131.

The abutting portion 132 extends in the vertical direction for abutting against the trigger switch 14 in the vertical direction. The rotating portion 133 and the abutting portion 132 are both accommodated in the housing 11, a through hole 1331 for the first plug-in unit 115 to pass through is formed in the rotating portion 133, the first plug-in unit 115 and the through hole 1331 are both arranged in a circular shape, and the diameter of the through hole 1331 is larger than that of the first plug-in unit 115, so that the locking switch 13 can conveniently rotate around the first plug-in unit 115.

Both sides of the rotating portion 133 are provided with a limiting block 1332, the number of the limiting blocks 1332 may be one, two or more, preferably, both sides of the rotating portion 133 are provided with two limiting blocks 1332. A cylindrical sleeve 1333 is further disposed on the rotating portion 133, the through hole 1331 is disposed through the sleeve 1333, and the sleeve 1333 and the fixing block 1313 are located on the same side of the locking switch 13.

Still be equipped with first elastic component 15 and second elastic component 16 in the casing 11, first elastic component 15 and second elastic component 16 divide and establish the both sides of rotation portion 133 for when locking switch 13 takes place to squint and rotate, drive locking switch 13 resets. Specifically, the first elastic member 15 is installed in a horizontal direction, and one end thereof passes through the first penetrating member 115, and is retained and received in a retaining cavity 117 between the first penetrating member 115 and a retaining member 116, and is brought into contact with an inner side wall of the first housing 111; the other end of the first elastic member 15 is limited by the limiting block 1332 on the rotating part 133, and is abutted against the rotating part 133. The second elastic element 16 is sleeved on the sleeve 1333 along the horizontal direction and limited by the limiting block 1332 at the same side, one end of the second elastic element 16 in the vertical direction abuts against the inner side wall of the second housing 112, and the other end of the second elastic element in the vertical direction is limited and contained in the fixing cavity 1314.

The locking switch 13 is provided with the fixing block 1313, the limiting block 1332 and the sleeve 1333, so that the first elastic element 15 and the second elastic element 16 can be limited and fixed, and the first elastic element 15 and the second elastic element 16 can better exert the elastic function. In this embodiment, the first elastic member 15 is a compression spring, and the second elastic member 16 is a torsion spring, and is mainly used for driving the locking switch 13 to reset; of course, other components capable of achieving the resetting function may be used instead of the first elastic member 15 and the second elastic member 16, and are not limited herein.

In the application, the locking switch 13 has a locking position and a releasing position, when the locking switch 13 is located at the locking position, the locking switch 13 and the trigger switch 14 are arranged oppositely and limit the action of the trigger switch 14, the trigger switch 14 is in a locking state, the main control switch 12 cannot be started, then the motor cannot rotate, and the electric tool cannot normally work; when the locking switch 13 is located at the releasing position, the locking switch 13 is located beside the trigger switch 14, the limiting relationship between the locking switch 13 and the trigger switch 14 is released, the trigger switch 14 is in the releasing state, the main control switch 12 can be started, if the trigger switch 14 is pressed at the moment, the main control switch 12 is started, the motor starts to rotate, and the electric tool starts to work normally.

Specifically, as shown in fig. 10 and 11, when the locking switch 13 is located at the locking position, the abutting portion 132 abuts against the top of the second side wall 147 of the holding portion 142, and at this time, not only the pressing portion 131 of the locking switch 13 cannot be pressed downward, but also the holding portion 142 of the trigger switch 14 cannot be gripped upward, and the locking switch 13 and the trigger switch 14 are in a mutually locked and restricted state, specifically, see fig. 10. When the locking switch 13 is located at the releasing position, the abutting portion 132 is deviated to the side of the holding portion 142, the locking switch 13 and the trigger switch 14 are released from abutting, the trigger switch 14 is in the releasing state, and at this time, if the holding portion 142 is gripped, the contact portion 141 can press the telescopic arm 122 of the main control switch 12 downward, so that the main control switch 12 is started, as shown in fig. 11.

It should be noted that: when the lock switch 13 is switched from the lock position to the release position, the abutting portion 132 only needs to be shifted to a certain distance towards one side of the accommodating cavity 145 until the abutting portion 132 is located above the accommodating cavity 145, at this time, the lock state between the lock switch 13 and the trigger switch 14 is released immediately, the lock switch 13 is located at the release position, and the trigger switch 14 is located at the release state. For the first elastic member 15 and the second elastic member 16, when the locking switch 13 is shifted toward the accommodating cavity 145 (i.e. shifted relative to the housing 11), the first elastic member 15 is compressed and deformed, and the abutting portion 132 moves to above the accommodating cavity 145; when the pressing portion 131 is pressed, the second elastic member 16 is forced to open and deform, and the abutting portion 132 enters the receiving cavity 145 and rotates synchronously in the receiving cavity 145.

As shown in fig. 12, the method for activating the switch assembly 10 mainly includes the following steps:

s1, the locking switch 13 is shifted to one side, so that the locking switch 13 is deviated relative to the housing 11, the locking switch 13 moves from the relative position of the trigger switch 14 to the side position, the limitation between the locking switch 13 and the trigger switch 14 is released, and the locking switch 13 is located at the releasing position;

s2, operating (i.e., pressing down) the lock switch 13 to rotate the lock switch 13 relative to the housing 11;

s3, the grip portion 142 (i.e., the first end 140) of the trigger switch 14 is operated (i.e., pressed upward), so that the trigger switch 14 is rotated relative to the housing 11 until the contact portion 141 (i.e., the second end 140') of the trigger switch 14 triggers the main switch 12, and the main switch 12 is activated.

Specifically, the method comprises the following steps: in the locked state (i.e., the initial state) shown in fig. 10, the trigger switch 14 is horizontally placed, the abutting portion 132 of the lock switch 13 abuts against the top of the second side wall 147 of the holding portion 142 in the vertical direction, at this time, the pressing portion 131 of the lock switch 13 cannot be pressed downward, the holding portion 142 of the trigger switch 14 cannot be gripped upward, the lock switch 13 and the trigger switch 14 are in the mutually locked state, and the main switch 12 cannot be started. In this case, even if the lock switch 13 and/or the trigger switch 14 are touched by mistake, the main control switch 12 cannot be activated, and the electric power tool remains in the non-use state.

When the electric tool needs to be used, firstly, the whole locking switch 13 is moved towards the left side (the side close to the accommodating cavity 145) for a certain distance, so that the abutting part 132 of the locking switch 13 is just above the accommodating cavity 145, and at the moment, the first elastic element 15 is compressed and deformed; then, the pressing portion 131 of the locking switch 13 is pressed downward, at this time, the abutting portion 132 enters the accommodating cavity 145 and rotates synchronously in the accommodating cavity 145, and the second elastic member 16 is forced to open under the action of the fixing block 1313 to deform; finally, the holding portion 142 is pressed (gripped) upward to rotate the trigger switch 14 with respect to the housing 11, until the contact portion 141 presses the telescopic arm 122 downward to start the main control switch 12 (as shown in fig. 11), and at this time, the motor starts to rotate, and the electric tool starts to operate normally.

After the use, the locking switch 13 and the trigger switch 14 are released at the same time, and the trigger switch 14 is restored to the initial state under the restoring force of the telescopic arm 122; meanwhile, under the elastic force of the second elastic member 16, the whole locking switch 13 reversely rotates until the abutting portion 132 is located above the accommodating cavity 145 again, and then under the elastic force of the first elastic member 15, the whole locking switch 13 shifts towards the right side (the side away from the accommodating cavity 145) until the abutting portion 132 abuts against the top of the second side wall 147 of the trigger switch 14 again, and at this time, the locking switch 13 and the trigger switch 14 are in a mutually locked state again.

To sum up, the switch assembly 10 of the present invention can utilize the mutual abutting between the trigger switch 14 and the locking switch 13 to make the locking switch 13 located at the locking position and the trigger switch 14 located at the locking state when the switch assembly is not in use, and at this time, the main control switch 12 cannot be started, and the electric tool remains in non-use state; when the electric tool is normally started, the locking switch 13 is firstly deviated towards one side until the locking switch 13 is released from abutting against the trigger switch 14, and then the main control switch 12 can be started by respectively pressing the locking switch 13 and the trigger switch 14, so that the electric tool can normally work. Compared with the prior art, the utility model is not only simple in structure, convenient operation, switch module 10 is in the locking state under non-user state moreover always, can not lead to improper start because of being pressed by accident, and factor of safety is higher.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A switch assembly comprises a shell, a main control switch contained in the shell, and a locking switch and a trigger switch which are installed on the shell, wherein one end of the trigger switch is exposed outside the shell, the other end of the trigger switch is contained in the shell and is contacted with the main control switch, and the switch assembly is characterized in that: one end of the locking switch is exposed outside the shell, the other end of the locking switch is in contact with the trigger switch, the locking switch is provided with a locking position and a releasing position, when the locking switch is located at the locking position, the locking switch and the trigger switch are oppositely arranged and limit the action of the trigger switch, the trigger switch is in a locking state, and the main control switch cannot be started; when the locking switch is located at the releasing position, the locking switch is located beside the trigger switch and removes the limitation, the trigger switch is in the releasing state, and the main control switch can be started.

2. The switch assembly of claim 1, wherein: the trigger switch comprises a contact part contacted with the main control switch and a holding part exposed outside the shell, the locking switch comprises a pressing part exposed outside the shell and a butting part contacted with the trigger switch, and when the locking switch is positioned at a locking position, the butting part butts against the inner side wall of the holding part; when the locking switch is located at the releasing position, the abutting part deviates to the side of the holding part and releases the abutting, and after the holding part is operated, the contact part triggers the main control switch to enable the main control switch to be started.

3. The switch assembly of claim 2, wherein: an accommodating cavity is arranged in the holding part, and the abutting part is contacted with the top wall of the holding part in a locking state; in the release state, the abutting part is positioned above the accommodating cavity.

4. The switch assembly of claim 3, wherein: the locking switch further comprises a rotating part connected with the pressing part and the abutting part, the rotating part is installed on the shell and can shift and rotate relative to the shell, and the abutting part synchronously rotates when the pressing part is pressed.

5. The switch assembly of claim 4, wherein: the shell is internally provided with a first elastic piece and a second elastic piece which are used for driving the locking switch to reset, one end of the first elastic piece is abutted against the inner side wall of the shell, the other end of the first elastic piece is abutted against the rotating part, when the locking switch deviates relative to the shell, the first elastic piece deforms, and the abutting part moves to the accommodating cavity; the second elastic piece is sleeved on the rotating portion, one end of the second elastic piece is abutted to the inner side wall of the shell, the other end of the second elastic piece is fixed to the pressing portion, and when the pressing portion is pressed, the second elastic piece deforms, and the abutting portion enters the accommodating cavity and rotates synchronously in the accommodating cavity.

6. The switch assembly of claim 5, wherein: first elastic component and second elastic component are established respectively the both sides of rotation portion, the both sides of rotation portion all are equipped with and are used for spacing fixed the stopper of first elastic component and second elastic component, be formed with the fixed block on pressing the splenium, the fixed block is the type of falling L setting, with fixed block and pressing and forming fixed chamber between the splenium, the other end of second elastic component is spacing to be acceptd fixed intracavity.

7. The switch assembly of claim 2, wherein: the trigger switch further comprises a connecting part connected with the contact part and the holding part, the connecting part is mounted on the shell and can rotate relative to the shell, so that when the holding part is operated, the contact part is synchronously driven to trigger the main control switch, and the main control switch is started.

8. The switch assembly of claim 7, wherein: the main control switch is in a pressing type arrangement and comprises a body part and a telescopic arm connected with the body part, and a contact part of the trigger switch is located above the telescopic arm so as to start the main control switch when the contact part presses the telescopic arm downwards.

9. The switch assembly of claim 8, wherein: the main control switch is a microswitch.

10. An electric power tool characterized in that: the power tool comprising the switch assembly of any one of claims 1-9 to control the activation or deactivation of the motor.