Self-locking handle and gardening tool

Abstract

The utility model relates to the technical field of gardening tools, and discloses a self-locking handle and a gardening tool. The self-locking handle comprises a shell, a containing space is defined by the shell, the shell is provided with a sliding groove communicated with the containing space, and the sliding groove is provided with a locking position and an unlocking position which are oppositely arranged. The switch is located in the containing space and fixed to the shell. And the trigger is rotatably arranged on the shell, and the trigger is used for controlling the conduction state of the switch. The self-locking piece is movably arranged in the sliding groove, when the self-locking piece is located at the locking position, the self-locking piece limits the trigger to move relative to the switch, and when the self-locking piece is located at the unlocking position, the self-locking piece allows the trigger to move relative to the switch. According to the self-locking handle, the overall structure of a self-locking mechanism can be simplified, the operation difficulty is reduced, and the stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to garden tool technical field, especially self locking handle and garden tool. BACKGROUND

[0002] The handle of garden tool such as cutting machine, grass trimmer etc. usually is provided with trigger, is used to start machine or shut down machine. If needing to use machine, when operator grasps handle, possibly accidental actuation trigger, cause machine to be started accidentally, thereby cause dangerous. And in the use process, operator needs to actuate trigger continuously, make machine be in running state, this can lead to operator to fatigue or pain due to long time to trigger exert force. Therefore, can set up locking mechanism on handle, lock trigger, make trigger before unlocking through locking mechanism, operator cannot actuate trigger, and after unlocking and actuating trigger, locking mechanism can make trigger keep in actuating state.

[0003] However, the existing locking mechanism structure is complex, and the operation is cumbersome, and faults are prone to occur. In addition, due to the existing locking mechanism device, the internal space of the garden tool is large, which leads to the difficulty of arranging the internal devices and wiring of the garden tool. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of self locking handle and garden tool, can simplify the overall structure of self locking mechanism, reduce operation difficulty, improve stability.

[0005] To solve the above technical problems, the first aspect of the utility model provides a kind of self locking handle, comprising:

[0006] Shell, enclose a containing space, the shell is equipped with the chute that communicates the containing space, the chute has the locking position and the unlocking position of opposite arrangement;Switch, in the containing space, and be fixed to the shell;Trigger, rotatably be equipped in the shell, the trigger is used to control the on-off state of switch;Self locking piece, movably be arranged in the chute, when the self locking piece is located at the locking position, the self locking piece restricts the trigger relative to the switch movement, when the self locking piece is located at the unlocking position, the self locking piece allows the trigger relative to the switch movement.

[0007] The embodiment of the utility model relative to prior art, set up the slide groove with opposite locking position and unlocking position on the shell, and set up the self locking piece at the slide groove, the self locking piece can slide on the slide groove. When the self locking piece is located at the locking position, the self locking piece restricts the trigger, and the trigger cannot move relative to the switch. When the self locking piece is located at the unlocking position, the self locking piece no longer restricts the trigger, and the trigger can move relative to the switch, simplify the overall structure of self locking mechanism, improve stability, reduce operation difficulty. In this way, when the self locking piece is located at the locking position, if the trigger originally separates from the switch, the trigger cannot approach and abut the switch, and the machine cannot start; if the trigger originally abuts the switch, the trigger cannot be far away from and separate from the switch, and the machine can keep starting state. When the self locking piece is located at the unlocking position, if the trigger originally separates from the switch, the operator can drive the trigger to approach and abut the switch to start the machine; if the trigger originally abuts the switch, the operator can drive the trigger to be far away from and separate from the switch, thereby shutting down the machine.

[0008] Optionally, the trigger has oppositely arranged first operation end and abutting end, the first operation end is used to drive the abutting end to move and make the abutting end contact the switch, the self locking piece has oppositely arranged second operation end and control end, part of the second operation end is exposed to the outside of the shell via the slide groove, the second operation end is used to drive the control end to move, when the second operation end is located at the locking position, the control end restricts the abutting end to move, when the second operation end is located at the unlocking position, the control end allows the abutting end to move.

[0009] Optionally, the abutting end and the control end are oppositely arranged, the abutting end is provided with first limiting protrusion extending towards the control end, the control end is provided with second limiting protrusion extending towards the abutting end, when the second operation end is located at the locking position, the second limiting protrusion abuts the first limiting protrusion and is located between the first limiting protrusion and the switch, so as to restrict the first limiting protrusion from pressing the switch, when the second operation end is located at the unlocking position, the second limiting protrusion is staggered with the first limiting protrusion, so as to allow the first limiting protrusion to press the switch under the drive of the first operation end.

[0010] Optionally, the self locking piece further includes first intermediate segment connecting the second operation end and the control end, the first intermediate segment is located in the containing space, the second operation end is provided with push button and reduced diameter segment, one end of the reduced diameter segment is connected with the push button, the other end is connected with the first intermediate segment, the axial dimension of the reduced diameter segment is smaller than the axial dimension of the push button and smaller than the axial dimension of the first intermediate segment, so as to form clamping groove at the reduced diameter segment, the edge of the shell surrounding the slide groove is embedded in the clamping groove.

[0011] Optionally, the first intermediate section is provided with an avoiding groove for avoiding the wire inside the shell.

[0012] Optionally, the shell is further provided with a first reset member inside the shell, one end of the first reset member abutting against the shell, the other end of the first reset member abutting against the first operation end, when the first operation end is driven and pushes the abutting end to contact the switch, the first operation end compresses the first reset member; when the first operation end is released, the first reset member restores to the original state and drives the first operation end to reset, and the abutting end is separated from the switch.

[0013] Optionally, the shell is further provided with a second reset member inside the shell, one end of the second reset member abutting against the shell, the other end of the second reset member abutting against the second operation end, when the second operation end is driven and moves towards the unlocking position, the second operation end compresses the second reset member, and the control end synchronously moves with the second operation end to allow the abutting end to move; when the second operation end is released, the second reset member restores to the original state and drives the second operation end to reset, and the control end synchronously moves with the second operation end to limit the abutting end to move.

[0014] Optionally, the trigger further comprises a second intermediate section connecting the first operation end and the abutting end, the second intermediate section is provided with a pivot through hole, the pivot shaft passes through the pivot through hole and is fixed to the shell, and the second intermediate section is rotatable relative to the pivot shaft.

[0015] Optionally, the switch is provided with a contact protrusion on the side facing the abutting end, the contact protrusion is used for ensuring that the abutting end abuts against the switch.

[0016] The second aspect of the utility model provides a garden tool, comprising:

[0017] The host computer, the grass brushing device, the rod connecting the host computer and the grass brushing device, and the self-locking handle of any one of the above.

[0018] The garden tool of the second aspect of the utility model has the same beneficial effects as the self-locking handle. BRIEF DESCRIPTION OF DRAWINGS

[0019] One or more embodiments are illustrated by way of example in the drawings that are for illustrative purposes only, and these illustrative purposes do not constitute a limitation on the embodiments, and elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified, and the drawings do not constitute a proportional limitation.

[0020] Figure 1is an internal structure schematic view of the self-locking handle of the embodiment of the utility model;

[0021] Figure 2 is a three-dimensional structure schematic view of the trigger of the embodiment of the utility model;

[0022] Figure 3 is a three-dimensional structure schematic view of the self-locking piece of the embodiment of the utility model;

[0023] Figure 4 is a cooperation structure schematic view of the trigger and the self-locking piece of the embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear, the various embodiments of the utility model will be described in detail below with reference to the drawings. However, those skilled in the art can understand that in the various embodiments of the utility model, many technical details are proposed in order to make the readers better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the claims of the present application can be realized.

[0025] In the embodiments of the utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0026] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the utility model can be understood according to the specific circumstances.

[0027] In addition, the terms "mounting", "setting", "providing", "opening", "connecting", "connecting" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0028] In addition, the terms "first", "second" and the like are used merely to differentiate different devices, elements or components (the specific type and configuration of which can be the same or different), and are not intended to indicate or imply relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] An embodiment of the utility model provides a self-locking handle, it includes: shell, enclose a containing space, the shell is equipped with the chute that communicates the containing space, the chute has opposite setting locking position and unlocking position, switch, be located in the containing space, and be fixed to the shell, trigger, rotatably be equipped in the shell, the trigger is used for control switch's on state, self-locking piece, movably set in the chute, when the self-locking piece is located at the locking position, the self-locking piece restricts the trigger relative the movement of switch, when the self-locking piece is located at the unlocking position, the self-locking piece allows the trigger relative the movement of switch.

[0030] An embodiment of the utility model further provides a garden tool, it includes: host computer, grass beating device, the rod piece that connects the host computer and grass beating device, and set up in the self-locking handle of rod piece.

[0031] The implementation details of the self-locking handle of the embodiment are described below. The following content is provided for easy understanding and is not necessary for implementing the present solution.

[0032] Referring to Figure 1 The self-locking handle 100 includes a shell 110, which encloses a containing space. The shell 110 is further provided with a chute 111 that communicates with the containing space. The chute 111 has opposite locking position and unlocking position. It can be understood that the chute 111 communicates the containing space with the external space of the shell 110.

[0033] The switch 120 is arranged in the containing space and fixed to the shell 110. The switch 120 is used to change the on state of the internal circuit of the garden tool, so that the garden tool is in running state or off state. The switch 120 can be a mechanical switch or a circuit switch, which can be set according to actual conditions, and the utility model does not make specific limitation.

[0034] The trigger 130 is rotatably arranged on the shell 110, and the trigger 130 is used to control the on state of the switch 120. For example, by driving the trigger 130 to rotate on the shell 110, the switch 120 is contacted, pushed or pressed, the state of the switch 120 is changed, and the on state of the internal circuit of the garden tool is changed.

[0035] The self-locking member 140 is movably arranged at the sliding groove 111 and can move along the extending direction of the sliding groove 111. When the self-locking member 140 is at the locking position, the self-locking member 140 restricts the trigger 130 from moving relative to the switch 120, and when the self-locking member 140 is at the unlocking position, the self-locking member 140 allows the trigger 130 to move relative to the switch 120.

[0036] As can be seen from the above, when the self-locking member 140 is at the locking position, if the trigger 130 is originally separated from the switch 120, the trigger 130 cannot approach and abut against the switch 120, and the garden tool cannot be started. If the trigger 130 originally abuts against the switch 120, the trigger 130 cannot move away from and separate from the switch 120, and the garden tool can remain in the started state. When the self-locking member 140 is at the unlocking position, if the trigger 130 is originally separated from the switch 120, the operator can drive the trigger 130 to approach and abut against the switch 120 to start the garden tool. If the trigger 130 originally abuts against the switch 120, the operator can drive the trigger 130 to move away from and separate from the switch 120 to shut down the garden tool. In this way, the operator can be prevented from accidentally starting the garden tool, which can cause a dangerous situation. Meanwhile, when the garden tool is in the running state, the self-locking member 140 can keep the switch 120 in the state of conducting the circuit at the locking position, so that the garden tool can continuously run without the operator continuously actuating the trigger 130.

[0037] Referring again to Figure 1 In an embodiment, the housing 110 can be provided with a through hole 112, and the trigger 130 at least partially extends into the accommodation space through the through hole 112. It can be understood that, in order to facilitate operation, the sliding groove 111 and the through hole 112 can be located at opposite sides of the housing 110. In this way, when the operator holds the handle with the palm, the thumb can be pressed against the self-locking member 140 to facilitate pushing the self-locking member 140 to move along the sliding groove 111, and the remaining fingers naturally bend to grip the handle while also pressing against the trigger 130 to facilitate applying force to the trigger 130.

[0038] Optionally, the sliding groove 111 can be arranged to extend along a straight line or extend along an arc. When the sliding groove 111 extends along a straight line in the same direction as the length direction of the thumb, the operator can push the self-locking member 140 by bending or stretching the thumb. When the sliding groove 111 extends along an arc or extends along a straight line at an angle to the length direction of the thumb, the operator can push the self-locking member 140 to move by swinging the thumb left and right.

[0039] Referring again to Figure 2In one embodiment, the trigger 130 has a first operation end 131 and an abutting end 132 arranged oppositely, the first operation end 131 is used to drive the abutting end 132 to move and make the abutting end 132 contact the switch 120. In other words, the operator can drive the first operation end 131 to bring the abutting end 132 close to or away from the switch 120. When the abutting end 132 is close to and abuts the switch 120, the switch 120 is turned on to make the garden tool run; when the abutting end 132 is away from and abandons the switch 120, the switch 120 is turned off to make the garden tool stop.

[0040] Referring to Figure 3 The self-locking piece 140 has a second operation end 141 and a control end 142 arranged oppositely, part of the second operation end 141 is exposed outside the shell 110 through the sliding groove 111, the second operation end 141 is used to drive the control end 142 to move, when the second operation end 141 is in the locking position, the control end 142 restricts the movement of the abutting end 132. When the second operation end 141 is in the unlocking position, the control end 142 allows the abutting end 132 to move. Specifically, the operator pushes the second operation end 141 to make the second operation end 141 move to the locking position or the unlocking position along the extension direction of the sliding groove 111, the control end 142 moves synchronously under the drive of the second operation end 141, when the second operation end 141 is in the locking position, the control end 142 abuts the abutting end 132 to prevent the abutting end 132 from moving; when the second operation end 141 is in the unlocking position, the control end 132 is away from the abutting end 132, and the abutting end 132 can move relative to the switch 120.

[0041] Referring to Figure 4 In one embodiment, the switch 120 is provided with a contact protrusion 121 on the side facing the abutting end 132, the contact protrusion 121 is used to ensure that the abutting end 132 abuts the switch 120. Specifically, the contact protrusion 121 protrudes towards the abutting end 132, when the abutting end 132 moves towards the switch 120, the abutting end 132 can move a relatively small path to abut the contact protrusion 121, the operator does not need to operate the trigger 130 greatly to start the machine.

[0042] Referring to Figure 4In one embodiment, the abutting end 132 and the control end 142 are oppositely arranged, the abutting end 132 is provided with a first limiting protrusion 132a extending towards the control end 142, and the control end 142 is provided with a second limiting protrusion 142a extending towards the abutting end 132. When the second operation end 141 is in the locking position, the second limiting protrusion 142a abuts the first limiting protrusion 132a to limit the movement of the first limiting protrusion 132a relative to the switch 120. When the second operation end 142 is in the unlocking position, the second limiting protrusion 142a is misaligned with the first limiting protrusion 132a to allow the first limiting protrusion 132a to move relative to the switch 120 under the drive of the first operation end 131.

[0043] It can be understood that when the abutting end 132 is separated from the control end 142 and the second operation end 141 is in the locking position, the second limiting protrusion 142a is located between the first limiting protrusion 132a and the switch 120, and the first limiting protrusion 132a is blocked by the second limiting protrusion 142a and cannot move towards the switch 120, so that the operator cannot directly start the garden tool through the trigger 130. When the operator moves the second operation end 142 to the unlocking position, the second limiting protrusion 142a is misaligned with the first limiting protrusion 132a, and at this time, the trigger 130 can be operated to move the abutting end 132 towards the switch 120 to start the garden tool.

[0044] When the abutting end 132 abuts the switch 120 and the second operation end 141 is in the locking position, the second limiting protrusion 142a is displaced from the side of the first limiting protrusion 132a away from the switch 120 and abuts the first limiting protrusion 132a, so that the operator cannot drive the first limiting protrusion 132a away from the switch 120 through the first operation end 131, so that the garden tool remains in the running state. When the operator moves the second operation end 141 to the unlocking position, the second limiting protrusion 142a is misaligned with the first limiting protrusion 132a, and at this time, the trigger 130 can be operated to move the abutting end 132 away from the switch 120 to shut down the garden tool.

[0045] In one embodiment, the self-locking member 140 further comprises a first intermediate section 143 connecting the second operation end 141 and the control end 142, and the first intermediate section 143 is located in the accommodating space. The second operation end 141 is provided with a push button 141a and a reduced diameter section 141b, the reduced diameter section 141b is connected to the push button 141a at one end and connected to the first intermediate section 143 at the other end, the axial dimension of the reduced diameter section 141b is smaller than the axial dimension of the push button 141a and smaller than the axial dimension of the first intermediate section 143, so as to form a clamping groove 141c at the reduced diameter section 141b, and the edge of the housing 110 surrounding the sliding groove 111 is embedded in the clamping groove 141c. In this way, the operator can drive the first intermediate section 143 to move the control end 142 by pushing the push button 141a. Moreover, since the edge of the housing 110 surrounding the sliding groove 111 is embedded in the clamping groove 141c, the housing 110 can prevent the push button 141a from moving towards the inside of the housing 110, and can also prevent the first intermediate section 143 from moving towards the outside of the housing 110, i.e. the self-locking member 140 can be prevented from moving.

[0046] The first intermediate section 143 is provided with an avoiding groove 143a for avoiding the wiring located inside the housing 110. Many garden tools are provided with various devices and complex wiring inside the housing 110, and by providing the avoiding groove 143a on the first intermediate section 143, more space can be provided for other devices or wiring inside the housing 110. For example, an aluminum pipe is usually provided in a grass trimmer and can be used for wiring, and the avoiding groove 143a can avoid the aluminum pipe so that the aluminum pipe can be normally arranged.

[0047] In one embodiment, the self-locking handle 100 further comprises a pivot shaft 150, and the trigger 130 further comprises a second intermediate section 133 connecting the first operation end 131 and the abutting end 132, and the second intermediate section 133 is provided with a pivot through hole 133a, the pivot shaft 150 passes through the pivot through hole 133a and is fixed to the housing 110, and the second intermediate section 133 is rotatable relative to the pivot shaft 150. Specifically, the trigger 130 is arranged as a lever structure, and the first operation end 131 and the abutting end 132 are two ends of the lever, respectively.

[0048] In one embodiment, the self-locking handle 100 further comprises a first reset member 160 arranged in the housing 110, one end of the first reset member 160 abutting the housing 110, and the other end of the first reset member 160 abutting the first operating end 131. When the first operating end 131 is driven to push the abutting end 132 to contact the switch 120, the first operating end 131 compresses the first reset member 160. When the first operating end 131 is released, the first reset member 160 restores to its original state and drives the first operating end 131 to reset, and the abutting end 132 is separated from the switch 120. Taking the first reset member 160 as a spring for example, the spring is arranged in the housing 110, one end of the spring abutting the first operating end 131, and the other end of the spring abutting the inside of the housing 110. The operator pushes the push button 141a by the thumb, moves the push button 141a to the unlocking position, and makes the second limiting protrusion 142a disengage from the second limiting protrusion 132a. Then, the operator holds and presses the first operating end 131, drives the abutting end 132 to abut the switch 120, and compresses the spring at the same time. If the operator keeps the push button 141a in the unlocking position, when the operator releases the first operating end 131, the spring restores to its original state and drives the first operating end 131 to reset. Then, the abutting end 132 is separated from the switch 120 under the driving of the first operating end 131, and the garden tool can be turned off.

[0049] Alternatively, the first reset member 160 can also be a metal spring, one end of the metal spring being fixed on one of the housing 110 and the trigger 130, and the other end being a free end for abutting the other of the housing 110 and the trigger 130.

[0050] In one embodiment, the self-locking handle 100 further comprises a second reset member 170 arranged in the housing 110, one end of the second reset member 170 abutting the housing 110, and the other end of the second reset member 170 abutting the second operating end 141. When the second operating end 141 is driven to move towards the unlocking position, the second operating end 141 compresses the second reset member 170, and the control end 142 moves synchronously with the second operating end 141 to allow the abutting end 132 to move. When the second operating end 141 is released, the second reset member 170 restores to its original state and drives the second operating end 141 to reset, and the control end 142 moves synchronously with the second operating end 141 to limit the abutting end 132 from moving.

[0051] Alternatively, the second reset member 170 can also be arranged with one end abutting the inside of the housing 110 and the other end abutting the above-mentioned first intermediate section 143. Furthermore, the first intermediate section 143 can be provided with a positioning slot (not shown in the figure), and the end of the second reset member 170 abutting the first intermediate section 143 extends into the positioning slot, which can prevent the second reset member 170 and the first intermediate section 143 from being dislocated and avoid the second reset member 170 from failing.

[0052] Similarly, the second return member 170 may also be a spring. In another feasible embodiment, the second return member 170 may also be a metal spring, one end of which is fixed to one of the housing 110 and the self-locking member 140, and the other end is a free end for abutting the other of the housing 110 and the self-locking member 140.

[0053] When activating the garden tool, the operator pushes the push button 141a, causing the second limiting protrusion 142a to be offset from the first limiting protrusion 141a. The operator then actuates the first operating end 131 to cause the abutting end 132 to abut the switch 120. The operator then releases the push button 141a, which, under the action of the second return member 170, moves, causing the second limiting protrusion 142a to move to the side of the abutting end 132 facing away from the switch 120. At this point, the second limiting protrusion 142a abuts the first limiting protrusion 132a, preventing the abutting end 132 from moving away from the switch 120. This keeps the garden tool in operation without the operator having to continuously operate the push button 141a and the first operating end 141.

[0054] It should be noted that the above-mentioned multiple different implementation methods can be set independently, or can be arbitrarily combined according to actual conditions without conflict, and the specific combination method will not be described in detail.

[0055] An embodiment of the present invention further provides a garden tool, comprising a main unit (not shown), a grass trimming device (not shown), a rod connecting the main unit and the grass trimming device (not shown), and the self-locking handle 100 provided on the rod.

[0056] It can be understood that, since the garden tool has the self-locking handle 100 , the garden tool also has the same beneficial effects as the self-locking handle 100 .

[0057] The self-locking handle and garden tool provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above implementation methods is only used to help understand the concept of the present invention. There may be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A self-locking handle, used on garden tools, characterized in that: include: The housing encloses a receiving space, the housing is provided with a slide groove communicating with the receiving space, and the slide groove has a locking position and an unlocking position arranged opposite to each other; a switch, located in the accommodating space and fixed to the housing; a trigger rotatably mounted on the housing, the trigger being used to control the conduction state of the switch; a self-locking member movably disposed in the slide slot, wherein when the self-locking member is located in the locking position, the self-locking member restricts the trigger from moving relative to the switch; When the self-locking member is located in the unlocking position, the self-locking member allows the trigger to move relative to the switch.

2. The self-locking handle according to claim 1, characterized in that: The trigger has a first operating end and an abutting end that are oppositely disposed, wherein the first operating end is used to drive the abutting end to move and make the abutting end contact the switch; The self-locking member has a second operating end and a control end that are relatively arranged. Part of the second operating end is exposed to the outside of the housing through the slide groove. The second operating end is used to drive the control end to move. When the second operating end is in the locking position, the control end restricts the movement of the abutting end; when the second operating end is in the unlocking position, the control end allows the abutting end to move.

3. The self-locking handle according to claim 2, characterized in that: The abutting end and the control end are arranged opposite to each other, the abutting end is provided with a first limiting protrusion extending toward the control end, and the control end is provided with a second limiting protrusion extending toward the abutting end; When the second operating end is in the locking position, the second limiting protrusion abuts the first limiting protrusion to limit the movement of the first limiting protrusion relative to the switch; when the second operating end is in the unlocking position, the second limiting protrusion is staggered with the first limiting protrusion to allow the first limiting protrusion to move relative to the switch under the drive of the first operating end.

4. The self-locking handle according to claim 2, characterized in that: The self-locking member also includes a first middle section connecting the second operating end and the control end, and the first middle section is located in the accommodating space; the second operating end is provided with a push button and a reduced diameter section, one end of the reduced diameter section is connected to the push button, and the other end is connected to the first middle section, the axial dimension of the reduced diameter section is smaller than the axial dimension of the push button, and smaller than the axial dimension of the first middle section, so as to form a card slot at the reduced diameter section, and the edge of the sliding groove surrounded by the shell is embedded in the card slot.

5. The self-locking handle according to claim 4, characterized in that: The first middle section is provided with an avoidance groove, and the avoidance groove is used to avoid the wiring inside the shell.

6. The self-locking handle according to claim 2, characterized in that: The first reset member is further provided in the housing, wherein one end of the first reset member abuts the housing, and the other end of the first reset member abuts the first operating end. When the first operating end is driven and pushes the abutting end to contact the switch, the first operating end compresses the first reset member. When the first operating end is released, the first reset member returns to its original state and drives the first operating end to reset, and the abutting end is separated from the switch.

7. The self-locking handle according to claim 2, characterized in that: It also includes a second restoring member arranged in the shell, one end of the second restoring member abuts the shell, and the other end of the second restoring member abuts the second operating end. When the second operating end is driven to move toward the unlocking position, the second operating end compresses the second restoring member, and the control end moves synchronously with the second operating end to allow the abutting end to move; when the second operating end is released, the second restoring member returns to its original state and drives the second operating end to reset, and the control end moves synchronously with the second operating end to limit the movement of the abutting end.

8. The self-locking handle according to claim 2, characterized in that: It also includes a pivot shaft, and the trigger also includes a second middle section connecting the first operating end and the abutment end. The second middle section is provided with a pivot through hole. The pivot shaft passes through the pivot through hole and is fixed to the housing. The second middle section is rotatable relative to the pivot shaft.

9. The self-locking handle according to any one of claims 2 to 8, characterized in that: The switch is provided with a resisting protrusion on a side facing the abutting end, and the resisting protrusion is used to ensure that the abutting end presses the switch.

10. A garden tool, characterized in that: The utility model comprises a main unit, a grass trimming device, a rod connecting the main unit and the grass trimming device, and a self-locking handle according to any one of claims 1 to 9 and arranged on the rod.

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