Electric tool

Abstract

The utility model relates to an electric tool which comprises a machine shell, the machine shell is provided with a battery pack installation part, the battery pack installation part is detachably connected with a battery pack, and the machine shell is provided with a battery pack installation part; the locking assembly comprises a spring bolt, a spring bolt receiving part and a triggering piece, and the triggering piece can drive the spring bolt to move relative to the spring bolt receiving part; the spring bolt receiving part comprises a first receiving part and a second receiving part which are arranged front and back in the insertion direction of the battery pack; the spring bolt is jointed with at least one of the first receiving part and the second receiving part, so that the battery pack is locked relative to the shell; the spring bolt is separated from the first receiving part and the second receiving part, so that the battery pack is unlocked relative to the shell; the lock tongue and the trigger piece are movably arranged on one of the machine shell and the battery pack, and the lock tongue receiving part is arranged on the other one of the machine shell and the battery pack.

Description

TECHNICAL FIELD

[0001] The present application relates to an electric tool and a method for unlocking a battery pack matched with the electric tool. BACKGROUND

[0002] Compared with fuel-powered tools, electric tools have the advantages of environmental protection and cleanness, and relatively small noise. Therefore, electric tools are more and more favored by users of power tools. Electric tools are powered by battery packs, and the battery packs often have a relatively short endurance time. Therefore, in order to improve work efficiency, the battery pack is usually configured to be detachably installed relative to the electric tool, so as to be replaced when the battery pack is insufficient.

[0003] The electric tool usually includes a battery pack mounting portion, and the battery pack is detachably installed on the battery pack mounting portion. In order to avoid the battery pack from being separated from the electric tool, causing harm to people or animals around, or causing damage to articles, resulting in a great safety hazard of the electric tool when in use. For this reason, in the related art, an interlocking mechanism is arranged between the battery pack and the housing of the electric tool, and the unlocking mode of the interlocking mechanism is usually that the battery pack is unlocked by applying an unlocking action to the unlocking key of the battery pack. SUMMARY

[0004] Based on this, it is necessary to provide an electric tool which can at least prevent the battery pack from being unlocked by mistake, reduce the risk of abnormal separation of the battery pack from the electric tool, and improve the safety of the electric tool when in use.

[0005] The electric tool provided by the present application comprises a housing, the housing is provided with a battery pack mounting portion, the battery pack mounting portion is detachably connected with a battery pack, the housing is provided with a battery pack mounting portion, the battery pack mounting portion is provided for the battery pack to be inserted and connected, and the battery pack is configured to provide electric energy for the electric tool; a locking assembly comprising a lock tongue, a lock tongue receiving portion and a trigger, the trigger can drive the lock tongue to move relative to the lock tongue receiving portion; the lock tongue receiving portion comprises a first receiving portion and a second receiving portion arranged in front of and behind in the insertion direction of the battery pack; the lock tongue is engaged with at least one of the first receiving portion and the second receiving portion, so as to lock the battery pack relative to the housing; the lock tongue is disengaged from the first receiving portion and the second receiving portion, so as to unlock the battery pack relative to the housing.

[0006] The lock tongue and the trigger are movably arranged on one of the housing and the battery pack, and the lock tongue receiving portion is arranged on the other one of the housing and the battery pack.

[0007] In one embodiment, the battery pack includes a battery pack housing extending along three orthogonal spatial directions (x, y, z) in the direction of a battery pack housing width axis W, a battery pack housing thickness axis T, and a battery pack housing height axis H; the battery pack includes a battery pack thickness midpoint in the direction of the battery pack housing thickness axis T, the trigger and the latch are both located on the same side of a plane perpendicular to the battery pack housing thickness axis T and passing through the battery pack thickness midpoint; or the battery pack includes a battery pack width midpoint in the direction of the battery pack housing width axis W, the trigger and the latch are both located on the same side of a plane perpendicular to the battery pack housing width axis W and passing through the battery pack width midpoint.

[0008] In one embodiment, the battery pack includes a battery pack housing including a first outer profile surface and a second outer profile surface spaced apart from each other, the first outer profile surface and the second outer profile surface are oppositely arranged in a direction perpendicular to the insertion direction of the battery pack, at least a portion of the latch or the latch receiving portion is arranged on the first outer profile surface, the trigger and the latch are both located on one side of the second outer profile surface.

[0009] In one embodiment, the power tool is configured to apply an external force to the trigger to drive the latch to move a first stroke and a second stroke; the latch moves the first stroke to disengage the latch from the first receiving portion, and the battery pack is not unlocked relative to the tool housing; the latch moves the second stroke to disengage the latch from the second receiving portion, thereby unlocking the battery pack relative to the tool housing.

[0010] In one embodiment, the locking assembly includes only one latch; the latch engages with the first receiving portion to lock the battery pack in a first position relative to the tool housing; the latch engages with the second receiving portion to lock the battery pack in a second position relative to the tool housing.

[0011] In one embodiment, the battery pack forms an electrical connection with the power tool only when the latch engages with the first receiving portion.

[0012] In one embodiment, the power tool applies an external force to the trigger to drive the latch to move the first stroke and the second stroke in sequence.

[0013] In one embodiment, the number of triggers is only one, and the one trigger drives the latch to move the first stroke or the second stroke.

[0014] In one embodiment, the latch and the trigger are movably arranged on the tool housing, and the first receiving portion and the second receiving portion are arranged on the battery pack.

[0015] In one embodiment, the electric power tool is a chain saw, the chain saw further comprises a cutting assembly mounted to the housing, the cutting assembly comprises a guide plate and a chain saw chain arranged around the guide plate, the guide plate provides support and guides the chain saw chain; and the battery pack is inserted and mounted to the battery pack mounting portion in a manner that the first outer profile surface and the second outer profile surface of the battery pack are spaced and opposite in a first direction perpendicular to a plane in which the guide plate lies, at least part of the locking tongue or the locking tongue receiving portion is arranged on the first outer profile surface, and the trigger or the plurality of triggers are located on one side of the second outer profile surface, or the battery pack is inserted and mounted to the battery pack mounting portion in a manner that the first outer profile surface and the second outer profile surface of the battery pack are spaced and opposite in a second direction parallel to the plane in which the guide plate lies, at least part of the locking tongue or the locking tongue receiving portion is arranged on the first outer profile surface, and the trigger or the plurality of triggers are located on one side of the second outer profile surface.

[0016] In one embodiment, the electric power tool is a chain saw, the chain saw further comprises a cutting assembly mounted to the housing, the cutting assembly comprises a guide plate and a chain saw chain arranged around the guide plate, the guide plate provides support and guides the chain saw chain; and the chain saw further comprises a top handle for a user to hold; the cutting assembly is arranged on the front side of the housing in the length extension direction of the chain saw; the battery pack mounting portion is arranged on the rear side of the housing in the length extension direction of the chain saw; and the top handle is arranged above the housing in the height extension direction of the chain saw.

[0017] The present application provides an electric power tool, comprising: a housing, the housing is provided with a battery pack mounting portion; a battery pack, which is detachably attached to the battery pack mounting portion, is used to provide electric energy for the electric power tool, the battery pack comprises a battery pack housing; and a locking assembly, which comprises a locking tongue, a locking tongue receiving portion and a trigger; the locking tongue and the trigger are movably arranged on one of the housing and the battery pack housing, the locking tongue receiving portion is arranged on the other one of the housing and the battery pack housing, the locking tongue can be engaged with the locking tongue receiving portion to lock the battery pack relative to the housing; the trigger can act on the locking tongue and link the locking tongue to move, and the trigger is configured to control the locking tongue and the locking tongue receiving portion to disengage based on at least two unlocking actions applied to the trigger, so as to unlock the battery pack relative to the housing.

[0018] In one embodiment, the unlocking action is configured to apply a force to the trigger and to cause the trigger to move a stroke; the at least two unlocking actions applied to the trigger include at least two unlocking actions corresponding to different directions of the force applied to the trigger within at least part of the stroke, or two unlocking actions with the same direction of the force applied intermittently.

[0019] In one embodiment, the locking assembly includes a locking tongue receiving portion including at least one stop space configured to engage with and stop the locking tongue; the at least two unlocking actions applied to the trigger are configured to cause the locking tongue to move a stroke and to disengage from the stop space of the locking tongue receiving portion, thereby causing the battery pack to be unlocked relative to the case.

[0020] In one embodiment, the locking assembly includes a locking tongue linkage configured to move the locking tongue; the at least two unlocking actions applied to the trigger include a first unlocking action and a second unlocking action, the first unlocking action and the second unlocking action are configured to cause the trigger to move a first stroke and a second stroke, respectively.

[0021] The first stroke is configured to cause the trigger to move to a position at which the locking tongue linkage is triggered; the second stroke is configured to cause the locking tongue linkage to move and thereby cause the locking tongue to move until the locking tongue disengages from the locking tongue receiving portion, thereby causing the battery pack to be unlocked relative to the case; the first stroke and the second stroke correspond to different directions of the force applied to the trigger within at least part of the stroke.

[0022] In one embodiment, the first unlocking action and the second unlocking action are applied to the trigger.

[0023] The first stroke is configured to cause the trigger to move to abut against the locking tongue linkage.

[0024] The second stroke is configured to cause the trigger to further move and thereby cause the locking tongue linkage to move, the locking tongue linkage causing the locking tongue to move until the locking tongue disengages from the locking tongue receiving portion, thereby causing the battery pack to be unlocked relative to the case.

[0025] In one embodiment, the locking tongue linkage is movably arranged relative to the locking tongue and is configured to abut against the locking tongue.

[0026] In one embodiment, the locking tongue linkage is fixedly connected relative to the locking tongue.

[0027] In one embodiment, the locking assembly further comprises a lock tongue elastic return member acting on the lock tongue to apply a force to the lock tongue to move the lock tongue towards the lock tongue receiving portion.

[0028] In one embodiment, the lock tongue linkage is pivotally arranged on the machine shell or the battery pack shell about a first pivot axis, the lock tongue linkage comprises a lock tongue abutting portion and a trigger abutting portion, the trigger abutting portion and the lock tongue abutting portion are synchronously pivotally moved about the first pivot axis, the trigger is movably arranged on the machine shell or the battery pack shell and is movable to abut against the trigger abutting portion and drive the trigger abutting portion to pivotally move about the first pivot axis, the lock tongue abutting portion is arranged to abut against the lock tongue and move the lock tongue away from the lock tongue receiving portion along with the trigger abutting portion pivotally moving about the first pivot axis.

[0029] In one embodiment, the trigger further comprises a trigger elastic return member, the trigger comprises an initial position when no unlocking action is applied to the trigger, the trigger elastic return member acts on the trigger to apply a force to the trigger to move the trigger towards the initial position.

[0030] In one embodiment, the trigger is pivotally connected to the machine shell or the battery pack shell about a second pivot axis, or the trigger is pivotally connected to the lock tongue linkage about a second pivot axis.

[0031] The first unlocking action is configured to flip the trigger to pivot about the second pivot axis to abut against the lock tongue linkage, and the second unlocking action is configured to further push the trigger to move the trigger and the lock tongue linkage to pivot about the first pivot axis, the lock tongue linkage drives the lock tongue to move until the lock tongue is disengaged from the lock tongue receiving portion to unlock the battery pack relative to the machine shell.

[0032] In one embodiment, the trigger is pivotally connected to the trigger abutting portion of the lock tongue linkage about the second pivot axis.

[0033] In one embodiment, the trigger elastic return member is a torsion spring clamped between the trigger and the machine shell or the battery pack shell.

[0034] In one embodiment, the machine shell or the battery pack shell is provided with a trigger mounting slot, the trigger is mounted in the trigger mounting slot and does not protrude from the machine shell or the battery pack shell.

[0035] In one embodiment, the trigger mounting slot is provided with a limiting slot wall for limiting the movement range of the trigger and a slot hole for the trigger to extend into the case or the battery pack case so that the trigger abuts against the bolt linkage.

[0036] In one embodiment, the trigger is guided to move in a first direction by a guide structure; the first unlocking action is configured to press the trigger to move in the first direction to abut against the bolt linkage; the second unlocking action is configured to push the trigger in a second direction, so that the trigger moves and drives the bolt linkage to pivot around the first pivot, and the bolt linkage drives the bolt to move until the bolt disengages from the bolt receiving portion, so that the battery pack is unlocked relative to the case.

[0037] In one embodiment, the guide structure includes a guide block pivotally arranged around the first pivot and a guide slot arranged on the trigger and cooperating with the guide block; the second unlocking action is configured to push the trigger in the second direction, so that the trigger makes a pivoting movement around the first pivot with the guide block, and drives the bolt linkage to pivot around the first pivot, and the bolt linkage drives the bolt to move until the bolt disengages from the bolt receiving portion, so that the battery pack is unlocked relative to the case.

[0038] In one embodiment, the trigger elastic return member is a spring arranged between the guide block and the guide slot.

[0039] In one embodiment, the case or the battery pack case is provided with a trigger mounting slot, and a limiting wall is arranged at the trigger mounting slot; the trigger is provided with a stop surface cooperating with the limiting wall; the limiting wall is used to stop the stop surface, so that the trigger moves in the first direction and cannot move in the second direction before the stop surface is disengaged from the stop of the limiting wall.

[0040] In one embodiment, the case or the battery pack case is further provided with a guide wall for guiding the trigger to move in the second direction.

[0041] In one embodiment, the trigger includes a pressing surface arranged substantially perpendicular to the first direction and a pushing surface arranged substantially perpendicular to the second direction.

[0042] In one embodiment, the lock tongue is provided with a reset member mounting portion, and one end of the lock tongue elastic reset member is attached to the reset member mounting portion, and the other end is in abutment with the machine shell or the battery pack shell.

[0043] In one embodiment, the lock tongue and the trigger member are arranged on the machine shell, and the lock tongue receiving portion is arranged on the battery pack; the machine shell is provided with a through hole for the lock tongue to extend into the battery pack mounting portion;

[0044] Alternatively, the lock tongue and the trigger member are arranged on the battery pack shell, and the lock tongue receiving portion is arranged on the machine shell; the battery pack shell is provided with a through hole for the lock tongue to extend.

[0045] In one embodiment, the lock tongue receiving portion includes a lock slot or a lock hole arranged on the machine shell or the battery pack shell.

[0046] In one embodiment, the lock tongue includes at least one protrusion, the lock tongue receiving portion includes at least one recess, the protrusion of the lock tongue is engaged with the recess of the lock tongue receiving portion, so that the battery pack is locked relative to the machine shell; the protrusion of the lock tongue is disengaged from the recess of the lock tongue receiving portion, so that the battery pack is unlocked relative to the machine shell.

[0047] In one embodiment, the lock tongue includes one protrusion, and the lock slot includes one recess matched with the one protrusion; alternatively, the lock tongue includes a plurality of protrusions, and the lock slot includes one or more recesses matched with the plurality of protrusions.

[0048] In one embodiment, a sliding guide mechanism is arranged between the battery pack and the battery pack mounting portion, the sliding guide mechanism includes a sliding groove and a sliding rail in guiding cooperation with the sliding groove, one of the battery pack and the battery pack mounting portion is provided with the sliding groove, and the other is provided with the sliding rail in guiding cooperation with the sliding groove, and the battery pack is connected to the battery pack mounting portion through the sliding groove and the sliding rail in cooperation and guided movement.

[0049] In one embodiment, the battery pack and the battery pack mounting portion include a plurality of sets of cooperating surfaces located at different sides of the battery pack, and the locking assembly is arranged on one set of the cooperating surfaces.

[0050] In one embodiment, the electric tool is a chain saw.

[0051] In one embodiment, the chainsaw is a tree chainsaw, including a body, a cutting assembly, a main handle, and a battery pack mounting part. The cutting assembly is located on the front side of the body, the battery pack mounting part is located on the rear side of the body, and the main handle is located on the upper side of the body and in front of the battery pack mounting part.

[0052] In one embodiment, the main handle includes a main handle housing, the housing includes the main handle housing, and the locking component is at least partially disposed within the main handle housing.

[0053] In one embodiment, the tree chainsaw further includes an auxiliary handle, one end of which is connected to the machine body and the other end to the main handle, and is located beside the machine body.

[0054] The power tools provided in this application can at least prevent the battery pack from being accidentally unlocked, reduce the risk of the battery pack detaching from the power tool and causing injury to people or objects in the surrounding work environment, effectively reduce safety hazards, and improve the safety of using power tools. Attached Figure Description

[0055] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0056] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0057] Figure 1 This is a perspective view of the overall structure of a power tool according to an embodiment of this application;

[0058] Figure 2 This is a partial perspective view of a power tool according to an embodiment of this application;

[0059] Figure 3 This is a partial front view of the structure of a power tool according to an embodiment of this application;

[0060] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0061] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0062] Figure 6This is a partial structural cross-sectional view of a power tool according to an embodiment of the present application with the locking component in a first state;

[0063] Figure 7 This is a partial structural cross-sectional view of a power tool according to an embodiment of this application with the locking component in a second state;

[0064] Figure 8 This is a partial structural cross-sectional view of a power tool according to an embodiment of this application with the locking assembly in a third state;

[0065] Figure 9 This is a schematic diagram of the structure of a locking component according to an embodiment of this application;

[0066] Figure 10 This is a schematic diagram of the structure of the latch and the latch elastic reset member according to an embodiment of this application;

[0067] Figure 11 This is a schematic diagram of the structure of a power tool according to another embodiment of this application, in the state of having a battery pack installed;

[0068] Figure 12 This is a schematic diagram of the structure of a power tool according to another embodiment of this application in the state without the battery pack installed;

[0069] Figure 13 This is a partial perspective view of a power tool according to another embodiment of this application;

[0070] Figure 14 This is a partial front view of the structure of a power tool according to another embodiment of this application;

[0071] Figure 15 for Figure 13 Enlarged view of point C in the middle;

[0072] Figure 16 for Figure 14 Enlarged view at point D;

[0073] Figure 17 This is a partial structural cross-sectional view of a power tool according to another embodiment of this application, with the locking component in a first state;

[0074] Figure 18 This is a partial structural cross-sectional view of a power tool according to another embodiment of the present application, with the locking component in a second state;

[0075] Figure 19 This is a partial structural cross-sectional view of a power tool according to another embodiment of this application, with the locking component in a third state;

[0076] Figure 20 This is a schematic diagram of the structure of a locking component according to another embodiment of this application;

[0077] Figure 21 This is a partial structural schematic diagram of a locking component according to another embodiment of this application;

[0078] Figure 22 This is a schematic diagram of the trigger element according to another embodiment of this application from a first-view perspective.

[0079] Figure 23 This is a schematic diagram of the trigger element according to another embodiment of this application from a second perspective.

[0080] Figure 24 This is a front view of the overall structure of the locking assembly of a power tool according to another embodiment of the present application in a first state;

[0081] Figure 25 For this application Figure 24 Enlarged view at point E in the middle;

[0082] Figure 26 This is an enlarged view of the locking component in a second state according to another embodiment of this application;

[0083] Figure 27 This is a top view of the overall structure of the power tool according to a second embodiment of this application;

[0084] Figure 28 This is a rear view of the overall structure of the power tool according to a second embodiment of this application;

[0085] Figure 29 This is a partial structural cross-sectional view of a power tool according to a second embodiment of this application;

[0086] Figure 30 for Figure 27 Enlarged view at point F;

[0087] Figure 31 for Figure 29 Enlarged view of point G in the middle;

[0088] Figure 32 This is a partial structural cross-sectional view of the locking assembly of a power tool according to three embodiments of the present application in a first state;

[0089] Figure 33 for Figure 32 Enlarged view of point J in the middle;

[0090] Figure 34 This is an enlarged view of the locking component in the second state according to three embodiments of this application;

[0091] Figure 35 This is an enlarged view of the locking component in the second state according to three embodiments of this application;

[0092] Figure 36 This is a schematic diagram of the battery pack structure according to three embodiments of this application;

[0093] Figure 37 Fig. 1 is a perspective view of the overall structure of an electric tool according to a first embodiment of the present application;

[0094] Figure 38 Fig. 2 is a perspective view of the overall structure of an electric hammer according to a second embodiment of the present application.

[0095] Figure 39 Fig. 3 is a schematic view of an unlocking assembly according to a third embodiment of the present application.

[0096] Figure 40 Fig. 4 is a schematic view of an unlocking assembly according to a fourth embodiment of the present application. DETAILED DESCRIPTION

[0097] In order to make the above objectives, features and advantages of the present application more obvious and comprehensible, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0098] In order to reduce the risk of the battery pack 2 being unlocked by mistake and then being separated from the electric tool, in the related art, an interlocking mechanism is usually arranged between the battery pack 2 and the housing 1 of the electric tool, and the unlocking manner of the interlocking mechanism is usually that an unlocking action is applied to the unlocking key of the battery pack 2 to unlock the battery pack 2. In a complex working environment, the risk of the battery pack 2 being unlocked by mistake is relatively large, especially in a high-altitude working scenario, such as working on a tree, the unlocking key of the battery pack 2 can be touched by a branch or an operator to cause the battery pack 2 to be separated from the electric tool, which can cause harm to people or animals around, or cause damage to objects, resulting in a large safety hazard of the electric tool in use.

[0099] In order to solve the technical problem that the battery pack 2 of the electric tool is easily unlocked by mistake and then separated from the electric tool abnormally, the present application provides an electric tool which can effectively reduce the risk of the battery pack 2 being unlocked by mistake. The electric tool of the present application can be a chain saw 100, an electric hammer 200, an electric drill, etc., but is not limited thereto, and the present application is particularly suitable for electric tools used in high-altitude working, such as a chain saw 100 used for working on a tree. The electric tool of the present application will be described in detail below by taking the chain saw 100 as an example, but it should be noted that the electric tool of the present application is not limited thereto.

[0100] Reference Signs List Figures 1 to 3The power tool includes a housing 1 and a locking assembly 3. The housing 1 is provided with a battery pack mounting portion 101, which is detachably connected with a battery pack 2 configured to provide power for the power tool. The locking assembly 3 includes a locking tongue 31, a locking tongue receiving portion 32 and a trigger member 33 (also referred to as a trigger mechanism).

[0101] The locking tongue 31 and the trigger member 33 are movably arranged on one of the housing 1 and the battery pack 2, and the locking tongue receiving portion 32 is arranged on the other one of the housing 1 and the battery pack 2. The locking tongue 31 is engaged with the locking tongue receiving portion 32 to lock the battery pack 2 relative to the housing 1, and the locking tongue 31 is disengaged from the locking tongue receiving portion 32 to unlock the battery pack 2 relative to the housing 1. Specifically, the locking tongue 31 and the trigger member 33 are movably arranged on the housing 1, and the locking tongue receiving portion 32 is arranged on the battery pack 2; or the locking tongue 31 and the trigger member 33 are movably arranged on the battery pack 2, and the locking tongue receiving portion 32 is arranged on the housing 1.

[0102] The power tool is configured to have an external force applied to the trigger member 33, and the trigger member 33 generates at least two different actions (also referred to as unlocking actions) to directly or indirectly drive the locking tongue 31 to move relative to the locking tongue receiving portion 32, thereby unlocking the battery pack 2 relative to the housing 1. The number of the trigger member 33 is configured to be one or more.

[0103] It can be understood that the at least two different actions generated by the trigger member 33 are actions generated by the trigger member 33 due to the external force applied to the trigger member 33, such as the movement of the trigger member 33 caused by the operator applying force to the trigger member 33. The trigger member 33 is the object of the external force, and the object of the force includes but is not limited to the operator, and can also be other force objects. The manner of applying force includes direct contact operation, indirect operation of transmitting force to the trigger member 33, etc., but is not limited thereto.

[0104] In some embodiments, when the trigger member 33 is configured to be one, at least two different actions are generated by the trigger member 33 based on the external force applied to the trigger member 33 to directly or indirectly drive the locking tongue 31 to move relative to the locking tongue receiving portion 32, thereby unlocking the battery pack 2 relative to the housing 1. In some embodiments, when the trigger member 33 is configured to be multiple, at least two different actions are generated by the multiple trigger members 33 based on the external force to directly or indirectly drive the locking tongue 31 to move relative to the locking tongue receiving portion 32, thereby unlocking the battery pack 2 relative to the housing 1. For example, the number of the multiple trigger members 33 can be two.

[0105] The at least two different actions of the trigger 33 are required to release the battery pack 2 from the housing 1, that is, a single action is not enough to release the battery pack 2 from the housing 1, and the external force that causes accidental triggering usually only causes a single action of the trigger 33. Therefore, the release of the battery pack 2 due to accidental triggering can be effectively reduced by releasing the battery pack 2 from the housing 1 through at least two different actions of the trigger 33.

[0106] Referring to Figure 12 and Figure 15 The battery pack 2 includes a battery pack housing 201, which includes first and second slide rails arranged in parallel to guide the insertion of the battery pack 2 to be connected to the power tool.

[0107] In an embodiment, one trigger 33 or multiple triggers 33 are arranged on one side of the battery pack 2. All the triggers 33 subjected to external force are arranged on the same side of the battery pack 2. Alternatively, the trigger 33 and the lock tongue 31 are arranged on the housing 1, and the lock tongue receiving portion 32 is arranged on the battery pack 2. The battery pack housing 201 has a top portion and a bottom portion arranged oppositely, and a first side portion and a second side portion arranged oppositely, and the lock tongue receiving portion 32 is arranged on the top portion. The first and second slide rails, the top portion and the bottom portion all extend along the insertion direction of the battery pack 2. One trigger 33 or multiple triggers 33 are located on one side of the top portion or the bottom portion.

[0108] In this way, on the one hand, when the operator unlocks the battery pack 2, the fingers only need to operate in a limited area, reducing the need for the fingers to shift a large area when unlocking the battery pack 2, or the need for multiple fingers to be spread apart a large distance. The embodiments provided by the present application have a more compact structure design and a more aesthetic appearance.

[0109] Considering that the linear distance between multiple triggers 33 distributed on multiple sides is longer, the difficulty for the operator to complete the unlocking of the battery pack 2 by relying on the fingers of a single hand is increased. If the operator is able to comfortably trigger multiple triggers 33 (for example, two triggers 33) by relying on the fingers of a single hand, it is necessary to have more stringent requirements for the size design of the battery pack 2, such as the size in the front-rear direction or the size in the left-right direction of the battery pack 2 being as small as possible, so as to facilitate the distance between multiple triggers 33 being shorter, thereby facilitating the unlocking operation of the operator. This will inevitably limit the design of the battery pack 2, which is not conducive to the expansion of the diversified design scenarios of the battery pack 2. In addition, for the embodiment in which only one trigger 33 is arranged on the housing 1, only one lock tongue 31 can be arranged, and the structure is simpler, and the lock tongue 31 can be directly engaged with the lock tongue receiving portion 32 that is compatible with the existing battery pack 2 platform, thereby better compatible with the existing battery pack 2 platform.

[0110] In an embodiment, as Figure 1As shown, the battery pack housing 201 extends along three orthogonal spatial directions (x, y, z) in the direction of the width axis W, the thickness axis T, and the height axis H of the battery pack housing 201. The battery pack housing 201 includes a width extending along the width axis W, a thickness extending along the thickness axis T, and a height extending along the height axis H. One or more triggers 33 are located on one side of a plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness, or one or more triggers 33 are located on one side of a plane P2 perpendicular to the width axis and passing through the midpoint of the width.

[0111] It should be noted that the battery pack housing 201 extends in the direction of the width axis W, the thickness axis T, and the height axis H, and the battery pack housing 201 is not limited to a standard cuboid, but can be other irregular shapes, such as chamfered edges, partially recessed or protruding surfaces, etc. The width axis W direction, the thickness axis T direction, and the height axis H direction are only used to illustrate the general extension direction of the battery pack housing 201. The width of the battery pack housing 201 is a line segment between the footfalls on the same width axis W of the two outermost points on the opposite surfaces of the battery pack 2 in the width axis W direction; the midpoint of the width is the midpoint of the line segment. The thickness of the battery pack housing 201 is a line segment between the footfalls on the same thickness axis T of the two outermost points on the opposite surfaces of the battery pack 2 in the thickness axis T direction; the midpoint of the thickness is the midpoint of the line segment. The height of the battery pack housing 201 is a line segment between the footfalls on the same height axis H of the two outermost points on the opposite surfaces of the battery pack 2 in the height axis H direction.

[0112] In one embodiment, all triggers 33 are located on one side of the plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness, or all triggers 33 are located on one side of the plane P2 perpendicular to the width axis and passing through the midpoint of the width.

[0113] It can be understood that one or more triggers 33 are located on one side of the plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness, or one or more triggers 33 are located on one side of the plane P2 perpendicular to the width axis and passing through the midpoint of the width, which reduces the need for a large area of finger displacement by the operator when unlocking the battery pack 2, and is more convenient for the operator to operate the trigger 33 with one hand to control the battery pack 2 to be unlocked relative to the case 1. The structure design is more concentrated, and the appearance of the machine is more aesthetic.

[0114] Optionally, all triggers 33 and all locking tongues 31 are located on the same side of the battery pack 2.

[0115] Optionally, all of the trigger 33 and all of the locking tongue 31 are located on one side of the plane P1 which is perpendicular to the thickness axis and passes through the midpoint of the thickness, or all of the trigger 33 and all of the locking tongue 31 are located on one side of the plane P2 which is perpendicular to the width axis and passes through the midpoint of the width.

[0116] Further optionally, all of the trigger 33, all of the locking tongue 31, and all of the locking tongue receiving portion 32 are located on one side of the plane P1 which is perpendicular to the thickness axis and passes through the midpoint of the thickness, or all of the trigger 33, all of the locking tongue 31, and all of the locking tongue receiving portion 32 are located on one side of the plane P2 which is perpendicular to the width axis and passes through the midpoint of the width.

[0117] It can be understood that more elements of all of the trigger 33, all of the locking tongue 31, and all of the locking tongue receiving portion 32 are located on the same side of the battery pack 2 or the same side of the plane P1 or the plane P2, which makes the structural design of the locking assembly 3 simpler and more compact, and is conducive to reducing the size of the power tool and making the appearance of the machine more aesthetic.

[0118] Further, the number of the locking tongue 31 can be one or more, and the number of the locking tongue receiving portion 32 matched with the one or more locking tongues 31 can also be one or more; accordingly, the number of the trigger 33 can also be one or more.

[0119] As an example, referring to Figures 3 to 8 , the locking assembly 3 includes one locking tongue 31, one locking tongue receiving portion 32, and one trigger 33, the locking tongue 31 and the trigger 33 are movably arranged on the casing 1, and the locking tongue receiving portion 32 is arranged on the battery pack 2. In this embodiment, one trigger 33, one locking tongue 31, and one locking tongue receiving portion 32 are located on one side of the plane P1 which is perpendicular to the thickness axis T and passes through the midpoint of the thickness.

[0120] As another example, referring to Figure 39 , the locking assembly 3 includes two locking tongues 31, two locking tongue receiving portions 32, and one trigger 33, the two locking tongues 31 are respectively a first locking tongue 3111 and a second locking tongue 3112, and the two locking tongue receiving portions 32 are respectively a first locking tongue 3111 receiving portion 32 matched with the first locking tongue 3111 and a second locking tongue 3112 receiving portion 32 matched with the second locking tongue 3112. The locking tongue 31 and the trigger 33 are movably arranged on the casing 1, and the locking tongue receiving portion 32 is arranged on the battery pack 2. In this embodiment, one trigger 33 is located on one side of the plane P1 which is perpendicular to the thickness axis and passes through the midpoint of the thickness; the first locking tongue 3111 and the second locking tongue 3112 are respectively located on two sides of the plane P1 which is perpendicular to the thickness axis and passes through the midpoint of the thickness; and the first locking tongue 3111 receiving portion 32 and the second locking tongue 3112 receiving portion 32 are respectively located on two sides of the plane P1 which is perpendicular to the thickness axis T and passes through the midpoint of the thickness.

[0121] As yet another example, referring to Figure 37 The locking assembly 3 includes one locking tongue 31, one locking tongue receiving portion 32, and one trigger 33. The locking tongue 31 and the trigger 33 are movably arranged on the housing 1, and the locking tongue receiving portion 32 is arranged on the battery pack 2. In this embodiment, the trigger 33, the locking tongue 31, and the locking tongue receiving portion 32 are all located on one side of the plane P2 that is perpendicular to the width axis W and passes through the middle point of the width.

[0122] As yet another example, referring to Figures 27 to 31 The locking assembly 3 includes two locking tongues 31, one locking tongue receiving portion 32 cooperating with the two locking tongues 31, and two triggers 33. The two locking tongues 31 are respectively a first locking tongue 3111 and a second locking tongue 3112. The locking tongues 31 and the triggers 33 are movably arranged on the housing 1, and the locking tongue receiving portion 32 is arranged on the battery pack 2. In this embodiment, the two triggers 33, the two locking tongues 31, and the locking tongue receiving portion 32 are all located on one side of the plane P1 that is perpendicular to the thickness axis and passes through the middle point of the thickness.

[0123] Based on the external force applied on the trigger 33, at least two different actions generated by the trigger 33 include one action generated by the trigger 33, which enables the trigger 33 to move and the battery pack 2 not to be unlocked relative to the housing 1, and another action generated by the trigger 33, which enables the trigger 33 to move and drive the locking tongue 31 to move, so that the battery pack 2 is unlocked relative to the housing 1. For the convenience of description, the one action is referred to as a first action, and the other action is referred to as a second action.

[0124] It should be noted that the first action and the second action are only used to represent two different actions, and the first and the second do not limit the order of the two actions or the continuity of the two actions. For example, there can be other actions between the two actions.

[0125] It can be understood that the first action of the trigger 33 enables the battery pack 2 not to be unlocked relative to the housing 1, and the second action of the trigger 33 enables the battery pack 2 to be unlocked relative to the housing 1. That is, based on at least the first action and the second action of the trigger 33, the battery pack 2 can be unlocked relative to the housing 1.

[0126] In one embodiment, based on the external force applied on the trigger 33, at least two different actions generated by the trigger 33 include one action, i.e., the first action, generated by the trigger 33, which enables the trigger 33 to move and the locking tongue 31 not to move, and another action, i.e., the second action, generated by the trigger 33, which enables the trigger 33 to move and drive the locking tongue 31 to move. By applying the external force on the trigger 33, at least two different actions generated by the trigger 33 are achieved, thereby successfully unlocking the battery pack 2 and enabling the battery pack 2 to be separated from the power tool.

[0127] As an example, as shown in Figures 3 to 8 the lock assembly 3 further comprises a lock tongue linkage 34, one action of the trigger 33, i.e. the first action, enables the trigger 33 to be in a position to allow the lock tongue 31 to be moved; another action of the trigger 33, i.e. the second action, enables the lock tongue linkage 34 to be moved and in turn the lock tongue 31 to be moved relative to the lock tongue receiving portion 32 so as to enable the battery pack 2 to be unlocked relative to the power tool. In this example, the trigger 33 is unable to move the lock tongue linkage 34 when the trigger 33 does not perform the first action. The first action of the trigger 33 enables the trigger 33 to be moved to a position where the trigger 33 is able to move the lock tongue 31.

[0128] It is to be understood that the trigger 33 being in a position to allow the lock tongue 31 to be moved means that the user is able to directly apply a force to the trigger 33 to move the trigger 33 without the need for any further action and the movement of the trigger 33 enables the lock tongue 31 to be moved.

[0129] In particular, the lock tongue linkage 34 is configured to be moved under the action of the trigger 33 and in turn to move the lock tongue 31. Further, the trigger 33 is movably arranged relative to the lock tongue linkage 34 and is able to abut against the lock tongue linkage 34. The lock tongue linkage 34 is movably arranged relative to the lock tongue 31 and is able to abut against the lock tongue 31; or the lock tongue linkage 34 is fixedly connected relative to the lock tongue 31. The lock tongue linkage 34 is configured to pivot about a fixed pivot.

[0130] In one example, as shown in Figures 3 to 8 the lock assembly 3 comprises a lock tongue 31, a lock tongue receiving portion 32, a trigger 33 and further comprises a lock tongue linkage 34. The trigger 33 is configured to pivot about a pivot, the first action of the trigger 33 enables the trigger 33 to be moved to a position where the trigger 33 abuts against the lock tongue linkage 34, the second action of the trigger 33 enables the trigger 33 to move the lock tongue linkage 34 and in turn the lock tongue 31 to be moved away from the lock tongue receiving portion 32. In this example, the first action of the trigger 33 enables the trigger 33 to be moved and the lock tongue 31 is not moved.

[0131] In another example, as shown in Figures 14 to 19 the trigger 33 is configured to move along a linear guide direction, the first action of the trigger 33 enables the trigger 33 to be moved to a position where the trigger 33 is able to move the lock tongue linkage 34, the second action of the trigger 33 enables the trigger 33 to move the lock tongue linkage 34 and in turn the lock tongue 31 to be moved away from the lock tongue receiving portion 32. In this example, the first action of the trigger 33 enables the trigger 33 to be moved and the lock tongue 31 is not moved.

[0132] In another example, the trigger 33 includes a first trigger 331 and a second trigger 332. Optionally, the first trigger 331 and the second trigger 332 are independently arranged from each other. The first trigger 331 and the second trigger 332 are independently moved from each other.

[0133] For the above-mentioned two embodiments of the trigger 33, as another example, as shown in Figures 24 to 26 the trigger 33 further includes the first trigger 331, and a restraining member 333 (which can be referred to as the second trigger 332) for locking the first trigger 331, the restraining member 333 includes a first position and a second position for generating movement relative to the housing 1; in the first position, the restraining member 333 does not allow the first trigger 331 to move the locking tongue 31; in the second position, the first trigger 331 can move the locking tongue 31.

[0134] It should be noted that the restraining member 333 does not allow the first trigger 331 to move the locking tongue 31, which should be understood as: if the user does not exert an operation on the restraining member 333, the trigger 33 cannot be operated to move the battery pack 2. Specifically, the restraining member 333 is arranged in a manner including locking or shielding the operation end 3311 of the trigger 33 to not allow the trigger 33 to move the battery pack 2, but is not limited thereto. For ease of understanding, one end of the trigger 33 for exerting an external force is defined as the operation end 3311 of the trigger 33.

[0135] In this embodiment, one action generated by the trigger 33, i.e., a first action, is configured as a movement trajectory generated by the restraining member 333, and another action generated by the trigger 33, i.e., a second action, is configured as a movement trajectory generated by the first trigger 331; the movement trajectory generated by the restraining member 333 realizes movement of the restraining member 333 from the first position to the second position to allow the first trigger 331 to move the locking tongue 31; the movement trajectory generated by the trigger 33 realizes the first trigger 331 moving the locking tongue 31 away from the locking tongue receiving portion 32. In this embodiment, the first action of the trigger 33 realizes movement of the trigger 33, and the locking tongue 31 does not move.

[0136] Specifically, the restraining member 333 is slidingly or pivotally connected to the housing 1, the restraining member 333 is interlocked with the trigger 33, or the restraining member 333 shields the operation end 3311 of the trigger 33, all of which are locking of the first trigger 331 by the restraining member 333 to not allow the user to directly operate the trigger 33 to move the battery pack 2.

[0137] For the above-mentioned two examples of the trigger 33, as still another example, as shown in Figure 40As shown, the trigger 33 includes a first trigger 331 and a second trigger 332, and the locking tongue 31 includes only one, and the locking assembly 3 further includes a first moving member 351 and a second moving member 352 which are independently moved. The first moving member 351 is located between the first trigger 331 and the locking tongue 31. The second moving member 352 is located between the second trigger 332 and the locking tongue 31. The first moving member 351 and the second moving member 352 each include an initial locking position and an unlocking position after moving a certain trajectory relative to the locking position. The first trigger 331 is configured to drive the first moving member 351 to move between the locking position and the unlocking position, and the second trigger 332 is configured to drive the second moving member 352 to move between the locking position and the unlocking position. In this example, at least one of the first moving member 351 and the second moving member 352 is in the locking position, and the locking tongue 31 is engaged with the locking tongue receiving portion 32; when the first moving member 351 and the second moving member 352 are both in the unlocking position, the locking tongue 31 is disengaged from the locking tongue receiving portion 32.

[0138] In this embodiment, one action generated by the trigger 33, i.e. the first action, is configured as the movement of the first trigger 331 to drive the first moving member 351 to move to the unlocking position; and the other action generated by the trigger 33, i.e. the second action, is configured as the movement of the second trigger 332 to drive the second moving member 352 to move to the unlocking position.

[0139] In another embodiment, based on the external force applied to the trigger 33, at least two different actions generated by the trigger 33 include: one action generated by the trigger 33 to move the trigger 33 to drive at least part of the locking tongue 31 to move, but the battery pack 2 is not unlocked relative to the case 1; and the other action generated by the trigger 33 to move the trigger 33 and drive the locking tongue 31 to move, so that the battery pack 2 is unlocked relative to the case 1. Further, there are at least two cases of driving at least part of the locking tongue 31 to move. One case is that the trigger 33 moves an action to drive the locking tongue 31 to move only a certain trajectory, at this time, the locking tongue 31 is not completely disengaged from the locking tongue receiving portion 32. Another case is that the trigger 33 moves to drive one locking tongue 31 to move and disengage from the locking tongue receiving portion 32. At this time, there are other locking tongues 31 engaged with the locking tongue receiving portion 32. In this embodiment, the number of locking tongues 31 is at least two.

[0140] As an example, as shown in FIG. 1, the trigger 33 includes a first trigger 331 and a second trigger 332, and the locking tongue 31 includes only one, and the locking assembly 3 further includes a first moving member 351 and a second moving member 352 which are independently moved. The first moving member 351 is located between the first trigger 331 and the locking tongue 31. The second moving member 352 is located between the second trigger 332 and the locking tongue 31. The first moving member 351 and the second moving member 352 each include an initial locking position and an unlocking position after moving a certain trajectory relative to the locking position. The first trigger 331 is configured to drive the first moving member 351 to move between the locking position and the unlocking position, and the second trigger 332 is configured to drive the second moving member 352 to move between the locking position and the unlocking position. In this example, at least one of the first moving member 351 and the second moving member 352 is in the locking position, and the locking tongue 31 is engaged with the locking tongue receiving portion 32; when the first moving member 351 and the second moving member 352 are both in the unlocking position, the locking tongue 31 is disengaged from the locking tongue receiving portion 32. Figures 27 to 31

[0141] ​In this embodiment, one action generated by the first trigger 331, namely the first action, is configured as the movement trajectory generated by the first trigger 331, which enables the first trigger 331 to drive the first bolt 3111 to disengage from the bolt receiving part 32. The other action generated by the second trigger 332, namely the second action, is configured as the movement trajectory of the second trigger 332, which enables the second trigger 332 to drive the second bolt 3112 to disengage from the bolt receiving part 32. That is, in this embodiment, the first action of the trigger 331 causes the first trigger 331 to move, and the first bolt 3111 to move.

[0142] In one embodiment, there is only one trigger 33. One action, the first action, generated by the trigger 33 moves the trigger 33 without unlocking the battery pack 2 relative to the housing 1. Another action, the second action, generated by the trigger 33 moves the trigger 33 and causes the latch 31 to move, thereby unlocking the battery pack 2 relative to the housing 1. In this embodiment, the same trigger 33 needs to perform at least two different actions to move the latch 31 and unlock the battery pack 2.

[0143] In one embodiment, there is only one trigger 33, and at least two different actions are generated sequentially by one trigger 33.

[0144] It should be noted that the word "sequentially" in "at least two different actions are generated sequentially on trigger 33" only means that the two actions occur one after the other and are progressive. The subsequent unlocking action can only be applied after the previous unlocking action is completed. It does not limit the continuity of the two actions, and there can be other actions between the two actions.

[0145] As an example, such as Figures 3 to 8 As shown, the locking assembly 3 includes a latch 31, a latch receiving part 32, and a trigger 33. In this embodiment, the first action of the trigger 33 causes the trigger 33 to move while the latch 31 remains stationary, and the battery pack 2 remains locked relative to the housing 1. The second action of the trigger 33 causes the latch 31 to move and disengage from the latch receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1. The first and second actions are generated sequentially by the trigger 33.

[0146] As another example, such as Figure 39As shown, the locking assembly 3 includes two locking latches 31, two locking latch receiving portions 32, and one trigger 33. The two locking latches 31 are a first locking latch 3111 and a second locking latch 3112, respectively. The two locking latch receiving portions 32 are a first locking latch 3111 receiving portion 32 and a second locking latch 3112 receiving portion 32, which are matched with the first locking latch 3111 and the second locking latch 3112, respectively. In this embodiment, a first action of the trigger 33 enables the trigger 33 to move, which drives the first locking latch 3111 to move away from the first locking latch 3111 receiving portion 32, and the battery pack 2 is not unlocked relative to the case 1. A second action of the trigger 33 enables the trigger 33 to move, which drives the second locking latch 3112 to move away from the second locking latch 3112 receiving portion 32, and the battery pack 2 is unlocked relative to the case 1. The first action and the second action are sequentially generated by one trigger 33.

[0147] In one embodiment, the trigger 33 includes a first trigger 331 and a second trigger 332. One action generated by the first trigger 331 enables the first trigger 331 to move, and the battery pack 2 is not unlocked relative to the case 1. Another action generated by the second trigger 332 enables the second trigger 332 to move and drives the locking latch 31 to move, so that the battery pack 2 is unlocked relative to the case 1.

[0148] It can be understood that, by respectively applying force to the first trigger 331 and the second trigger 332, one action is generated by the first trigger 331 and the second trigger 332, respectively, so that the battery pack 2 is unlocked relative to the case 1, which can effectively reduce the risk of the battery pack 2 being unlocked due to accidental touch.

[0149] As an example, as shown in Figures 27 to 31 The trigger 33 includes a first trigger 331 and a second trigger 332, and the locking latch 31 includes a first locking latch 3111 and a second locking latch 3112 that move independently, respectively. The first trigger 331 is configured to drive the first locking latch 3111 to move, and the second trigger 332 is configured to drive the second locking latch 3112 to move.

[0150] In this embodiment, one action generated by the trigger 33 is configured as a movement trajectory of the first trigger 331, which enables the first trigger 331 to drive the first locking latch 3111 to move away from the locking latch receiving portion 32. Another action generated by the trigger 33 is configured as a movement trajectory of the second trigger 332, which enables the second trigger 332 to drive the second locking latch 3112 to move away from the locking latch receiving portion 32.

[0151] As another example, as shown in Figure 40As shown, the trigger 33 includes a first trigger 331 and a second trigger 332, and the locking tongue 31 is provided with only one, and the locking assembly 3 further includes a first moving member 351 and a second moving member 352 which are independently moved, and the first moving member 351 and the second moving member 352 each include a locking position and an unlocking position, the first trigger 331 is configured to drive the first moving member 351 to move between the locking position and the unlocking position, the second trigger 332 is configured to drive the second moving member 352 to move between the locking position and the unlocking position, and at least one of the first moving member 351 and the second moving member 352 is in the locking position, the locking tongue 31 is engaged with the locking tongue receiving portion 32; when the first moving member 351 and the second moving member 352 are both in the unlocking position, the locking tongue 31 is disengaged from the locking tongue receiving portion 32.

[0152] In the embodiment, one action generated by the trigger 33 is configured as the movement of the first trigger 331 to drive the first moving member 351 to move to the unlocking position, and the other action generated by the trigger 33 is configured as the movement of the second trigger 332 to drive the second moving member 352 to move to the unlocking position.

[0153] In one embodiment, one action of the trigger 33 realizes a first stroke trajectory (also referred to as a first stroke) of the trigger 33, and the other action of the trigger 33 realizes a second stroke trajectory (also referred to as a second stroke) of the trigger 33 which is different from the first stroke trajectory. The electric tool is configured to release the lock of the battery pack 2 relative to the housing 1 based on at least the first stroke trajectory and the second stroke trajectory. The first stroke trajectory and the second stroke trajectory of the trigger 33 are not on a straight line. Further, the first stroke trajectory and the second stroke trajectory are different in direction or parallel.

[0154] It should be noted that the stroke trajectory can be the movement trajectory of any point on the trigger 33. The first stroke trajectory and the second stroke trajectory are not on a straight line, which can be that the first stroke trajectory and the second stroke trajectory are not straight lines; can be that the first stroke trajectory and the second stroke trajectory are straight lines, and the first stroke trajectory and the second stroke trajectory are different in direction; can also be that the first stroke trajectory and the second stroke trajectory are straight lines, and the first stroke trajectory and the second stroke trajectory are parallel and do not overlap, and can also be other forms, which are not limited thereto.

[0155] It can be understood that the first stroke trajectory and the second stroke trajectory are not on a straight line, which means that a single-directional force applied to the trigger 33 cannot release the lock of the battery pack 2 relative to the housing 1, and the external force causing the false touch is usually only a single-directional force, and therefore, the risk of the battery pack 2 being unlocked due to the false touch can be effectively reduced.

[0156] Further, the number of the trigger pieces 33 is only one, and the first stroke trajectory and the second stroke trajectory are generated by the movement of the same trigger piece 33 in sequence; or the number of the trigger pieces 33 is configured to be at least two, and the first stroke trajectory and the second stroke trajectory are generated by the movement of different trigger pieces 33.

[0157] As an example, as shown in Figures 3 to 8 , the locking assembly 3 only includes one trigger piece 33, and the first stroke trajectory and the second stroke trajectory are generated by the movement of the same trigger piece 33 in sequence. Specifically, the trigger piece 33 makes a pivotal movement around a pivot, and the trigger piece 33 moves the first stroke trajectory to reach a position capable of moving the lock tongue 31, and the trigger piece 33 continues to move the second stroke trajectory to move the lock tongue 31 away from the lock tongue receiving portion 32. In this embodiment, since the trigger piece 33 makes a pivotal movement, the first stroke trajectory and the second stroke trajectory are both arc lines, and they do not overlap.

[0158] As another example, as shown in Figures 14 to 19 , the locking assembly 3 only includes one trigger piece 33, and the first stroke trajectory and the second stroke trajectory are generated by the movement of the same trigger piece 33 in sequence. Specifically, the trigger piece 33 moves the first stroke trajectory along a straight line guide direction to reach a position capable of moving the lock tongue 31, and the trigger piece 33 continues to make a pivotal movement around a pivot to move the second stroke trajectory to move the lock tongue 31 away from the lock tongue receiving portion 32. In this embodiment, the first stroke trajectory is a straight line, and the second stroke trajectory is an arc line.

[0159] As yet another example, as shown in Figures 27 to 31 , the number of the trigger pieces 33 is two, which are a first trigger piece 331 and a second trigger piece 332, and the first trigger piece 331 and the second trigger piece 332 respectively move the first lock tongue 3111 and the second lock tongue 3112. The first stroke trajectory and the second stroke trajectory are respectively generated by the movement of the first trigger piece 331 and the second trigger piece 332. In this embodiment, the first trigger piece 331 and the second trigger piece 332 are the same in structure and the same in movement mode, and the first stroke trajectory and the second stroke trajectory are parallel.

[0160] As still another example, as shown in Figures 24 to 26 , the trigger piece 33 includes a first trigger piece 331 and a suppression piece 333 for locking the first trigger piece 331, and the suppression piece 333 includes a first position and a second position for generating movement relative to the housing 1; in the first position, the suppression piece 333 does not allow the first trigger piece 331 to move the lock tongue 31; in the second position, the first trigger piece 331 can move the lock tongue 31.

[0161] The first stroke trajectory is generated by the movement of the suppression member 333, and the suppression member 333 is moved from the first position to the second position to allow the first trigger member 331 to move the lock tongue 31, wherein the first stroke trajectory is a sliding or pivoting movement of the suppression member 333 away from the first trigger member 331; the second stroke trajectory is generated by the first trigger member 331, and the first trigger member 331 drives the lock tongue 31 to disengage from the lock tongue receiving portion 32. In this embodiment, the first stroke trajectory and the second stroke trajectory are generated by the movement of the suppression member 333 and the first trigger member 331 respectively, that is, the different trigger members 33 are moved in sequence, and the directions of the first stroke trajectory and the second stroke trajectory are different.

[0162] In related art, to solve the technical problem that the battery pack 2 of the power tool is easily unlocked by mistake and then abnormally separated from the power tool, two pairs of interlocking mechanisms are arranged between the battery pack 2 and the shell 1 of the power tool, that is, the power tool is provided with two lock tongues 31, two lock tongue receiving portions 32 respectively matched with the two lock tongues 31, and two trigger members 33 respectively used to control the movement of the two lock tongues 31. However, the conventional battery pack 2 usually only has one lock tongue receiving portion 32, so that the power tool cannot be compatible with the existing battery pack 2 platform and cannot realize the function of preventing the battery pack 2 from being unlocked by mistake.

[0163] To be compatible with the existing battery pack 2 with only one lock tongue receiving portion 32 and to realize the function of preventing the battery pack 2 from being unlocked by mistake, in one embodiment, the lock tongue 31 and the trigger member 33 are movably arranged on the shell 1, the lock tongue receiving portion 32 is arranged on the battery pack 2, the number of the lock tongue receiving portion 32 is only one, and the lock tongue receiving portion 32 is configured to be engaged with at least one lock tongue 31.

[0164] As an example, as shown in Figures 3 to 8 The locking assembly 3 includes one lock tongue 31, one lock tongue receiving portion 32, and one trigger member 33. In this embodiment, based on the external force applied to the trigger member 33, the first action of the trigger member 33 is generated to realize the movement of the trigger member 33, the lock tongue 31 is stationary, and the battery pack 2 is not unlocked relative to the shell 1; based on the external force applied to the trigger member 33, the second action of the trigger member 33 is generated to realize the movement of the trigger member 33 to drive the lock tongue 31 to move away from the lock tongue receiving portion 32, so that the battery pack 2 is unlocked relative to the shell 1. In this embodiment, only one lock tongue receiving portion 32 is provided, and at least two different actions of the trigger member 33 are generated by applying force to the trigger member 33 to realize the unlocking of the battery pack 2 relative to the shell 1, which can effectively reduce the risk of unlocking the battery pack 2 by mistake.

[0165] As another example, as shown in Figures 27 to 31As shown, the locking assembly 3 includes two locking latches 31, one locking latch receiving portion 32 cooperating with the two locking latches 31, and two triggers 33. The two locking latches 31 are respectively a first locking latch 3111 and a second locking latch 3112. In this embodiment, the two locking latches 31 share one locking latch receiving portion 32, and the two triggers 33 are arranged to be actuated to release the locking of the battery pack 2 relative to the housing 1, which can effectively reduce the risk of the battery pack 2 being unlocked due to accidental actuation.

[0166] The electric power tool of this embodiment can be compatible with the existing battery pack 2 having only one locking latch receiving portion 32, and can realize the function of preventing the battery pack 2 from being unlocked due to accidental actuation on the basis of the platform of the battery pack 2.

[0167] The chain saw 100 for working on trees is usually used by a user when working on trees, and the working environment is relatively complex. When the user climbs the tree, the chain saw 100 is usually hung on the user's body, and the chain saw 100 will shake during the process of climbing the tree. Therefore, during the process of the user climbing the tree and working on the tree, the battery pack 2 unlocking key can be in contact with the branches or the user's body, which can cause the battery pack 2 to be unlocked due to accidental actuation, so that the battery pack 2 is abnormally separated from the chain saw 100, causing harm to people or animals around or damage to articles, and there is a great safety hazard.

[0168] In one embodiment, referring to Figure 1 , the electric power tool is a chain saw 100, and the chain saw 100 includes a cutting assembly 62 and a top handle 63. The cutting assembly 62 is mounted to the housing 1, and the cutting assembly 62 includes a guide plate 641 and a saw chain 621 (also referred to as a cutting chain) arranged around the guide plate 641. The guide plate 641 provides support and guidance for the saw chain 621. The top handle 63 is for a user to hold. The cutting assembly 62 is arranged on the front side of the housing 1 in the length extension direction of the chain saw 100; the battery pack mounting portion 101 is arranged on the rear side of the housing 1 in the length extension direction of the chain saw 100; and the top handle 63 is arranged above the housing 1 in the height extension direction of the chain saw 100.

[0169] It should be noted that, as shown in Figure 1 , the length extension direction L1 of the chain saw 100 is the length extension direction of the guide plate 641, the height extension direction H1 of the chain saw 100 is the height extension direction of the guide plate 641, and the width extension direction W1 of the chain saw 100 is the thickness extension direction of the guide plate 641.

[0170] The top handle 63 includes a top handle housing 631, and the trigger 33 and at least part of the locking latch 31 are arranged in the top handle housing 631. It can be understood that, by arranging the locking latch 31 and the trigger 33 movably on the housing 1 and arranging the locking latch receiving portion 32 on the battery pack 2, the trigger 33 can be arranged on the top handle housing 631, so that the user can hold and operate the battery pack 2 unlocking simultaneously with one hand.

[0171] As Figure 12 shown, the chain saw 100 further comprises a trigger 66 for controlling the chain saw 100 to work or stop. The trigger 66 is arranged on the upper side or lower side of the top handle housing 631. The trigger 33 and the trigger 66 are arranged on the same side or opposite side of the top handle housing 631, respectively, for the convenience of the user.

[0172] The chain saw 100 further comprises an auxiliary handle 65 arranged on the side of the machine housing 1. Preferably, the auxiliary handle 65 is arranged on the left side of the machine housing 1.

[0173] The top handle 63 of the chain saw 100 is arranged on the front side of the battery pack 2, so that the chain saw 100 is smaller in size and more compact in structure, and is used in cooperation with the auxiliary handle 65 arranged on the side of the machine housing 1, which is convenient for the operator to operate the chain saw 100 in a narrow space, and is especially suitable for use in complex operating environments such as tree operations.

[0174] In some embodiments, the locking assembly 3 comprises a locking tongue 31, a locking tongue receiving portion 32, a trigger 33, and a locking tongue linkage 34.

[0175] In some embodiments, the locking tongue receiving portion 32 comprises at least one stop space capable of engaging and stopping the locking tongue 31; the locking tongue 31 is disengaged from the stop space of the locking tongue receiving portion 32, so that the battery pack 2 is unlocked relative to the machine housing 1. It can be understood that the unlocking of the locking tongue 31 and the locking tongue receiving portion 32 can be that the locking tongue 31 is disengaged from all stop spaces of the locking tongue receiving portion 32.

[0176] The locking tongue receiving portion 32 is a locking slot or hole arranged on the machine housing 1 or the battery pack housing 201. It can be understood that the locking slot or hole, i.e., the stop space capable of stopping the locking tongue 31, constitutes the locking tongue receiving portion 32.

[0177] As Figures 4 to 8 shown, the locking tongue 31 comprises at least one protrusion 311, the locking tongue receiving portion 32 comprises at least one recess 321, the protrusion 311 of the locking tongue 31 engages with the recess 321 of the locking tongue receiving portion 32, so that the battery pack 2 is locked relative to the machine housing 1; the protrusion 311 of the locking tongue 31 is disengaged from the recess 321 of the locking tongue receiving portion 32, so that the battery pack 2 is unlocked relative to the machine housing 1.

[0178] As an example, the lock tongue receiving portion 32 comprises a lock slot arranged on the casing 1 or the battery pack casing 201. The lock tongue 31 comprises a protrusion 311, and the lock slot comprises a recess 321 corresponding to the protrusion 311. The protrusion 311 of the lock tongue 31 engages with the recess 321 of the lock slot, so that the battery pack 2 is locked relative to the casing 1. That is, the protrusion 311 extends into the recess 321, so that the battery pack 2 is locked relative to the casing 1 and cannot move. The lock tongue 31 and the lock tongue receiving portion 32 are unlocked, that is, the protrusion 311 of the lock tongue 31 is disengaged from the recess 321 of the lock slot, so that the battery pack 2 can move relative to the casing 1.

[0179] As another example, the lock tongue receiving portion 32 comprises a lock slot arranged on the casing 1 or the battery pack casing 201. The lock tongue 31 comprises a plurality of protrusions 311, and the lock slot comprises a plurality of recesses 321 corresponding to the plurality of protrusions 311. It can be understood that the lock tongue 31 can be an integral structure, such as a plurality of protrusions 311 extending from a main body, and the plurality of protrusions 311 are synchronously moved with the main body. The lock tongue 31 can also comprise a plurality of separate structures, each of which comprises a protrusion 311, and the plurality of separate structures are synchronously moved with the trigger mechanism 33, that is, the plurality of protrusions 311 of the plurality of separate structures synchronously engage with the plurality of recesses 321 of the lock slot to lock the battery pack 2, or synchronously disengage from the plurality of recesses 321 of the lock slot to unlock the battery pack 2.

[0180] As still another example, the lock tongue receiving portion 32 comprises a lock slot arranged on the casing 1 or the battery pack casing 201. The lock tongue 31 comprises one or more protrusions 311, and the lock slot comprises one or more recesses 321 corresponding to the one or more protrusions 311. For example, the lock tongue 31 can comprise a plurality of pawls, and the lock slot can comprise a slot corresponding to the plurality of pawls. Alternatively, one protrusion 311 can sequentially engage with a plurality of lock slots, and the like, which are not listed here.

[0181] In an embodiment, the longitudinal section of the recess 321 of the lock slot is trumpet-shaped, gradually narrowing from the outer side to the inner side, and the longitudinal section of the protrusion 311 of the lock tongue 31 gradually narrows from the outer side to the inner side along the direction close to the lock slot. This structure is beneficial to the alignment of the lock tongue 31 and the lock slot, and the accuracy requirement of the lock tongue 31 in the movement direction is low. The protrusion 311 of the lock tongue 31 is provided with a limiting surface abutting with the outer end surface of the recess 321 of the lock slot, so that the lock tongue 31 and the lock slot can be stably engaged, and the relative movement between the battery pack 2 and the casing 1 can be reduced.

[0182] The trigger 33 is movably arranged on the casing 1, and the trigger 33 moves relative to the casing 1 to drive the lock tongue 31 to engage or disengage the lock tongue receiving portion 32. The trigger 33 is directly connected with the lock tongue 31, or indirectly connected with the lock tongue 31, or abuts against the lock tongue 31.

[0183] As shown in Figure 6 , the locking assembly 3 further comprises a trigger elastic return member 334; the trigger 33 comprises an initial position in the state of no external force applied, and the trigger elastic return member 334 acts on the trigger 33 to apply a force to the trigger 33 to move it towards the initial position.

[0184] As shown in Figure 6 , the locking assembly 3 further comprises a lock tongue elastic return member 36; the lock tongue elastic return member 36 acts on the lock tongue 31 to apply a force to the lock tongue 31 to move it towards the lock tongue receiving portion 32. The lock tongue 31 is provided with a return member mounting portion, and one end of the lock tongue elastic return member 36 is attached to the return member mounting portion, and the other end is in abutment with the machine shell 1 or the battery pack shell 201.

[0185] In one embodiment, the lock tongue 31 and the trigger 33 are arranged on the machine shell 1, and the lock tongue receiving portion 32 is arranged on the battery pack 2; the machine shell 1 is provided with a through hole for the lock tongue 31 to extend into the battery pack mounting portion 101. In another embodiment, the lock tongue 31 and the trigger 33 are arranged on the battery pack shell 201, and the lock tongue receiving portion 32 is arranged on the machine shell 1; the battery pack shell 201 is provided with a through hole for the lock tongue 31 to extend.

[0186] In one embodiment, referring to Figures 6 to 8 , the lock tongue linkage 34 is pivotally arranged on the machine shell 1 or the battery pack shell 201 about the first pivot shaft 335, the lock tongue linkage 34 comprises a lock tongue abutment portion 341 and a trigger abutment portion 342, the trigger 33 is movably arranged on the machine shell 1 or the battery pack shell 201, and can move to abut against the trigger abutment portion 342 and drive the trigger abutment portion 342 to pivot about the first pivot shaft 335, and the lock tongue abutment portion 341 is configured to abut against the lock tongue 31 and drive the lock tongue 31 to move away from the lock tongue receiving portion 32.

[0187] Specifically, the lock tongue linkage 34 has a through shaft hole 343 through which the first pivot shaft 335 passes, and the lock tongue linkage 34 is pivotally arranged on the first pivot shaft 335 through the through shaft hole 343. The trigger elastic return member 334 is a torsion spring clamped between the trigger 33 and the machine shell 1.

[0188] It can be understood that the lock tongue linkage 34 can be a one-piece structure, and the lock tongue abutment portion 341 and the trigger abutment portion 342 are formed on the one-piece structure in different directions. The lock tongue linkage 34 can also comprise two separate elements, and the lock tongue abutment portion 341 and the trigger abutment portion 342 are formed on the two separate elements respectively, and the two separate elements are in abutment and synchronous linkage.

[0189] Further, the lock tongue abutting portion 341 and the trigger abutting portion 342 are located on two sides of a plane that passes through the pivot axis of the first pivot 335 and is parallel to the movement direction of the lock tongue 31. Preferably, the angle between the extension direction of the lock tongue abutting portion 341 and the extension direction of the trigger abutting portion 342 is 90°-180°. More preferably, the angle between the extension direction of the lock tongue abutting portion 341 and the extension direction of the trigger abutting portion 342 is 150°-180°.

[0190] With reference to Figure 9 The lock tongue abutting portion 341 includes an extension portion 341a arranged along the extension direction thereof and an abutting portion 341b connected to the outer end of the extension portion 341a, and the abutting portion 341b has a smooth transition outer contour in the pivoting direction of the lock tongue abutting portion 341. As an example, the lock tongue abutting portion 341 can include two symmetrical abutting portions 341b connected as a whole by the extension portion 341a.

[0191] In this embodiment, the lock tongue linkage 34 includes two separate elements, i.e., an upper linkage 342a and a lower linkage 342b, the trigger abutting portion 342 is formed on the upper linkage 342a, and the lock tongue abutting portion 341 is formed on the lower linkage 342b, and the upper linkage 342a and the lower linkage 342b are synchronously linked in an abutting manner. Specifically, the upper linkage 342a and the lower linkage 342b are respectively pivotally connected to the first pivot 335, the outer edge of the upper linkage 342a is formed with an upper boss 342a1, the outer edge of the lower linkage 342b is formed with a lower boss 342b1, and the upper boss 342a1 and the lower boss 342b1 abut each other through an abutting surface arranged radially along the first pivot 335 to realize synchronous linkage of the upper linkage 342a and the lower linkage 342b.

[0192] In one embodiment, the lock tongue linkage 34 is movably arranged relative to the lock tongue 31 and can abut the lock tongue 31. It can be understood that the lock tongue linkage 34 and the lock tongue 31 are two independent components.

[0193] With reference to Figure 10The locking tongue 31 is provided with an embedded groove 314 for the locking tongue abutting portion 341 of the locking tongue linkage 34 to extend into and be limited in the pivoting direction of the locking tongue abutting portion 341, and a reset member mounting portion 313, one end of the locking tongue elastic reset member 36 being attached to the reset member mounting portion 313 and the other end abutting against the casing 1. The locking tongue abutting portion 341 of the locking tongue linkage 34 includes two abutting portions 341b. The reset member mounting portion 313 is at least partially arranged in the embedded groove 314, the embedded groove 314 being open at the middle of the side wall away from the protruding portion 311 for the locking tongue elastic reset member 36 to extend out, and two blocking walls 312 being formed on both sides of the side wall for respectively abutting against the two abutting portions 341b of the locking tongue linkage 34. Specifically, the locking tongue elastic reset member 36 is a spring, and the reset member mounting portion 313 is a column body fixed in the embedded groove 314 and having a gradually narrowed head portion, so that the one end of the spring can be sleeved and clamped on the front end of the column body, and the cross section of the column body is cross-shaped. The casing 1 is provided with a spring limiting groove 103 at the corresponding position for limiting the other end of the spring. By arranging the reset member mounting portion 313 in the embedded groove 314, the structure of the locking tongue 31 is more compact and smaller in size.

[0194] In one embodiment, as shown in Figures 4 to 8 The trigger 33 is pivotally connected to the casing 1 or the battery pack shell 201 around the second pivot 336, or the trigger 33 is pivotally connected to the locking tongue linkage 34 around the second pivot 336. Further, the trigger 33 is pivotally connected to the locking tongue linkage 34 around the second pivot 336. Specifically, the trigger 33 is pivotally connected to the trigger abutting portion 342 of the locking tongue linkage 34 around the second pivot 336.

[0195] Further, the trigger elastic reset member 334 is a torsion spring clamped between the trigger 33 and the casing 1 or the battery pack shell 201.

[0196] The casing 1 or the battery pack shell 201 is provided with a trigger 33 mounting slot 4, the trigger 33 being mounted at the trigger 33 mounting slot 4 and not protruding out of the casing 1 or the battery pack shell 201. Such structure makes the trigger 33 not easy to be mistakenly touched. Further, the trigger 33 mounting slot 4 is provided with a limiting groove wall 41 for limiting the movement range of the trigger 33 and a slot hole 42 for the trigger 33 to extend into the casing 1 or the battery pack shell 201, and an operation gap 43 is left between the operation end 3311 of the trigger 33 and the trigger 33 mounting slot.

[0197] In another embodiment, referring to Figures 11 to 16The trigger 33 is guided to move in the first direction by a guide structure 337. The first unlocking action is configured to press the trigger 33 to move in the first direction to abut against the lock tongue linkage 34; the second unlocking action is configured to push the trigger 33 in the second direction, so that the trigger 33 moves and drives the lock tongue linkage 34 to pivot about the first pivot 335, the lock tongue linkage 34 drives the lock tongue 31 to move, until the lock tongue 31 is disengaged from the lock tongue receiving portion 32, so that the battery pack 2 is unlocked relative to the case 1.

[0198] Further, referring to Figures 20 to 22 The guide structure 337 includes a guide block 3371 pivotally arranged about the first pivot 335 and a guide groove 3372 arranged on the trigger 33 and cooperated with the guide block 3371. At this time, the first unlocking action is configured to press the trigger 33 to move in the first direction to abut against the lock tongue linkage 34; the second unlocking action is configured to push the trigger 33 in the second direction, so that the trigger 33 pivots about the first pivot 335 with the guide block 3371, and drives the lock tongue linkage 34 to pivot about the first pivot 335, the lock tongue linkage 34 drives the lock tongue 31 to move, until the lock tongue 31 is disengaged from the lock tongue receiving portion 32, so that the battery pack 2 is unlocked relative to the case 1.

[0199] The trigger elastic return member 334 is a spring arranged between the guide block 3371 and the guide groove 3372.

[0200] Referring to Figures 17 to 19 The case 1 or the battery pack shell 201 is provided with a trigger 33 mounting slot 4, and a limiting wall 44 is arranged at the trigger 33 mounting slot 4. The trigger 33 is provided with a stop surface 3313 cooperated with the limiting wall 44, and the limiting wall 44 is used to stop the stop surface 3313, so that the trigger 33 moves in the first direction before disengaging the stop of the limiting wall 44 and cannot move in the second direction.

[0201] The case 1 or the battery pack shell 201 is further provided with a guide wall 45, which is used to guide the trigger 33 to move in the second direction. As an example, the guide wall 45 extends substantially in the second direction. The guide wall 45 can guide the trigger 33 to a certain extent, so that the user is more likely to find the force angle matching the second direction, and the battery pack 2 unlocking action is easier to operate.

[0202] In the embodiment, the lock tongue linkage 34 is an integral structure, and the lock tongue abutting portion 341 and the trigger abutting portion 342 are formed on the integral structure in different directions.

[0203] Referring to Figure 23The trigger 33 includes a pressing surface 3314 arranged substantially perpendicular to the first direction and a pushing surface 3315 arranged substantially perpendicular to the second direction. The pushing surface 3315 is provided with anti-skid lines 3316. Specifically, the upper surface of the trigger 33 is provided with a groove, the bottom wall of the groove forms the pressing surface 3314, and one side wall of the groove forms the pushing surface 3315. The pressing surface 3314 is arranged substantially perpendicular to the first direction, which is conducive to the user applying a force to the trigger 33 to move the trigger 33 in the first direction. The pushing surface 3315 is arranged substantially perpendicular to the second direction, which is conducive to the user applying a force to the trigger 33 to move the trigger 33 in the second direction. The user can more easily find the force angle to make the trigger 33 produce the first action and the second action, and it is easier to operate the battery pack 2 to be unlocked.

[0204] With reference to Figure 12 and Figure 15 In one embodiment, a sliding guide mechanism 5 is arranged between the battery pack 2 and the battery pack mounting portion 101. The sliding guide mechanism 5 includes a sliding groove 52 and a sliding rail 51 that is guided and matched with the sliding groove 52. One of the battery pack 2 and the battery pack mounting portion 101 is provided with the sliding groove 52, and the other is provided with the sliding rail 51 that is guided and matched with the sliding groove 52. The battery pack 2 is movably connected to the battery pack mounting portion 101 through the sliding groove 52 and the sliding rail 51.

[0205] As an example, the sliding groove 52 is arranged on the battery pack mounting portion 101, and the sliding rail 51 that is guided and matched with the sliding groove 52 is arranged on the battery pack 2. The battery pack 2 is movably connected to the battery pack mounting portion 101 through the sliding rail 51 and the sliding groove 52, and the mutual guide limiting between the battery pack 2 and the battery pack mounting portion 101 is achieved. The battery pack mounting portion 101 is open at the top, and the battery pack 2 is inserted into the battery pack mounting portion 101 from top to bottom in the longitudinal direction.

[0206] The battery pack mounting portion 101 is provided with a mounting portion electrode terminal that is electrically connected to the electric tool. The battery pack 2 is provided with a battery pack 2 electrode terminal. When the battery pack 2 is reliably mounted on the battery pack mounting portion 101, the mounting portion electrode terminal is matched with the battery pack 2 electrode terminal, and the electrical connection between the battery pack 2 and the electric tool can be achieved.

[0207] In the electric tool of the embodiment, when the user installs the battery pack 2, the sliding rail 51 is aligned with the sliding groove 52, the battery pack 2 is inserted into the battery pack mounting portion 101, and when the battery pack 2 is inserted in place, the locking tongue 31 can be engaged with the locking groove on the battery pack 2 under the action of the locking tongue elastic reset member 36, that is, the protruding portion 311 of the locking tongue 31 extends into the recessed portion 321 of the locking groove, so that the battery pack 2 is locked relative to the casing 1. When the user needs to disassemble the battery pack 2, the battery pack 2 is first unlocked, and then the battery pack 2 is pulled out along the guide direction.

[0208] To solve the technical problem that the battery pack 2 of the power tool is easily unlocked by mistake and then abnormally separated from the power tool, the application further provides a power tool, which comprises a shell 1 and a locking assembly 3. The shell 1 is provided with a battery pack mounting portion 101, which can be used for connecting the battery pack 2, and the battery pack 2 is configured to provide power for the power tool. The locking assembly 3 comprises a locking tongue 31, a locking tongue receiving portion 32 and a trigger 33.

[0209] The locking tongue 31 and the trigger 33 are movably arranged on one of the shell 1 and the battery pack 2, and the locking tongue receiving portion 32 is arranged on the other one of the shell 1 and the battery pack 2. The locking tongue 31 is engaged with the locking tongue receiving portion 32 to lock the battery pack 2 relative to the shell 1, and the locking tongue 31 is disengaged from the locking tongue receiving portion 32 to unlock the battery pack 2 relative to the shell 1.

[0210] The power tool is configured to apply an external force to the trigger 33, and at least two different actions of the trigger 33 directly or indirectly drive the locking tongue 31 to move relative to the locking tongue receiving portion 32, so as to unlock the battery pack 2 relative to the shell 1.

[0211] The battery pack 2 comprises a battery pack shell 201, which comprises a first outer profile surface 71 and a second outer profile surface 72, the first outer profile surface 71 and the second outer profile surface 72 are arranged opposite to each other in a direction perpendicular to the insertion direction of the battery pack 2, at least part of the locking tongue 31 or the locking tongue receiving portion 32 is arranged on the first outer profile surface 71, and the trigger 33 is located on one side of the second outer profile surface 72.

[0212] In one embodiment, all the triggers 33 are located on one side of the second profile surface.

[0213] The number of the locking tongues 31 can be one or more, and the number of the locking tongue receiving portions 32 matched with the one or more locking tongues 31 can also be one or more; accordingly, the number of the triggers 33 can also be one or more.

[0214] As an example, referring to Figures 3 to 8 , the locking assembly 3 comprises one locking tongue 31, one locking tongue receiving portion 32 and one trigger 33, the locking tongue 31 and the trigger 33 are movably arranged on the shell 1, and the locking tongue receiving portion 32 is arranged on the battery pack 2. In this embodiment, the first outer profile surface 71 and the second outer profile surface 72 are arranged opposite to each other in the thickness direction of the battery pack 2, the locking tongue receiving portion 32 is arranged on the first outer profile surface 71, and the trigger 33 is located on one side of the second outer profile surface 72.

[0215] As another example, referring to Figures 27 to 31The locking assembly 3 includes two latches 31, a latch receiving part 32 cooperating with the two latches 31, and two triggers 33. The two latches 31 are a first latch 3111 and a second latch 3112, respectively. The latches 31 and the triggers 33 are movably disposed on the housing 1, and the latch receiving part 32 is disposed on the battery pack 2. In this embodiment, the first outer contour surface 71 and the second outer contour surface 72 are disposed opposite each other in the thickness direction of the battery pack 2. The latch receiving part 32 is disposed on the first outer contour surface 71, and the two triggers 33 are located on one side of the second outer contour surface 72.

[0216] In one embodiment, all trigger elements 33 and all latches 31 are located on one side of a plane P1 perpendicular to the thickness axis T and passing through the midpoint of the thickness; or, all trigger elements 33 and all latches 31 are located on one side of the second profile surface. Specific examples of this embodiment have been described in the foregoing embodiments and will not be repeated here.

[0217] In one embodiment, all trigger elements 33, all latches 31, and all latch receiving portions 32 are located on one side of a plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness; or, all trigger elements 33, all latches 31, and all latch receiving portions 32 are located on one side of the second contour surface 72. Specific examples of this embodiment have been described in the foregoing embodiments and will not be repeated here.

[0218] In one embodiment, such as Figure 1 As shown, the battery pack 2 includes a battery pack housing 201, which extends along three orthogonal spatial directions (x, y, z) in the directions of its width axis W, thickness axis T, and height axis H. The trigger 33 and the latch 31 are both located on the same side of a plane passing through the center of gravity of the battery pack 2 and perpendicular to the thickness axis T; or, the trigger 33 and the latch 31 are both located on the same side of a plane passing through the center of gravity of the battery pack 2 and perpendicular to the width axis W. Specifically, the center of gravity of the battery pack 2 is located within the battery pack housing 201.

[0219] In one embodiment, such as Figure 36 As shown, the battery pack 2 includes a battery pack housing 201, which extends along three orthogonal spatial directions (x, y, z) in the directions of its width axis W, thickness axis T, and height axis H. The battery pack housing 201 includes a first housing 211 and a second housing 212 arranged opposite each other along the thickness axis direction. In the thickness axis direction, the trigger 33 and the locking tongue 31 are both located on one of the first housing 211 and the second housing 212.

[0220] In one embodiment, the battery pack 2 and the battery pack mounting portion 101 include multiple pairs of mating surfaces located on different sides of the battery pack 2, with the latch 31 and latch receiving portion 32 both disposed on one pair of mating surfaces. As an example, as shown in the figure, taking the chainsaw 100 as an example, in the thickness axis direction of the battery pack 2, the side of the battery pack 2 closer to the cutting component 62 is considered the front, and the side farther from the cutting component 62 is considered the rear. In the width axis direction of the battery pack 2, with the user facing forward, the left-hand side is considered the left, and the right-hand side is considered the right. The battery pack 2 and the battery pack mounting portion 101 include five pairs of mating surfaces located on the front, rear, left, right, and bottom sides of the battery pack 2, with the latch 31 and latch receiving portion 32 both disposed on one pair of mating surfaces on the front, rear, left, and right sides. Specifically, the latch 31 and latch receiving portion 32 are both disposed on the front mating surface.

[0221] Furthermore, the battery pack 2 also includes a battery pack terminal, which includes a plurality of terminals electrically connected to the power tool. The battery pack terminal is disposed close to the first outer contour surface 71 and far away from the second contour surface.

[0222] As an example, such as Figure 3 As shown, the locking assembly 3 includes two latches 31, a latch receiving part 32 cooperating with the two latches 31, and two triggers 33. The two latches 31 are a first latch 3111 and a second latch 3112, respectively. The latches 31 and the triggers 33 are movably mounted on the housing 1, and the latch receiving part 32 is mounted on the battery pack 2. In this embodiment, the first outer contour surface 71 and the second outer contour surface 72 are arranged opposite each other in the thickness direction of the battery pack 2. The latch receiving part 32 and the battery pack terminal are both located on the first outer contour surface 71, and all the triggers 33 are located on one side of the second outer contour surface 72.

[0223] It should be noted that the embodiments described above, which do not conflict with each other, can be freely combined to form new embodiments. Therefore, the embodiments already described above will not be repeated here.

[0224] To address the technical problem that the battery pack 2 of a power tool is easily unlocked by accident, leading to its abnormal detachment from the tool, this application also provides a power tool, including a housing 1 and a locking assembly 3. The housing 1 has a battery pack mounting section 101, which allows the battery pack 2 to be inserted and connected. The battery pack 2 is configured to provide power to the power tool. The locking assembly 3 includes a latch 31, a latch receiving section 32, and a trigger member 33.

[0225] The locking tongue 31 and the trigger 33 are movably arranged on one of the housing 1 and the battery pack 2, and the locking tongue receiving portion 32 is arranged on the other of the housing 1 and the battery pack 2. The locking tongue 31 is engaged with the locking tongue receiving portion 32 to lock the battery pack 2 relative to the housing 1, and the locking tongue 31 is disengaged from the locking tongue receiving portion 32 to unlock the battery pack 2 relative to the housing 1.

[0226] The trigger 33 is only one, and the electric tool is configured to apply an external force to the trigger 33, and the trigger 33 generates at least two different actions to directly or indirectly drive the locking tongue 31 to move relative to the locking tongue receiving portion 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0227] It can be understood that the electric tool is only provided with one trigger 33, and the at least two different actions of the trigger 33 are the at least two different actions generated by the same trigger 33 under the external force, for example, the action generated by the trigger 33 when the operator applies a force to the trigger 33. The trigger 33 is the object of the external force, and of course the object of the force includes but is not limited to the operator, and can also be other force objects. The force applying mode includes direct contact operation, indirect operation to transmit force to the trigger 33, etc., but is not limited thereto.

[0228] The at least two different actions of the trigger 33 can only unlock the battery pack 2 relative to the housing 1, that is, a single action is not enough to unlock the battery pack 2 relative to the housing 1, and the external force that usually causes accidental touch can only generate a single action of the trigger 33. Therefore, the at least two different actions of the trigger 33 to unlock the battery pack 2 relative to the housing 1 can effectively reduce the risk of unlocking the battery pack 2 due to accidental touch.

[0229] It can be understood that the same trigger 33 can be operated to unlock the battery pack 2 relative to the housing 1, which not only avoids the unlocking of the battery pack 2 due to accidental touch, but also facilitates the user to perform the unlocking operation of the battery pack 2.

[0230] As an example, as shown in Figures 3 to 8 The locking assembly 3 includes one locking tongue 31, one locking tongue receiving portion 32, and only one trigger 33. In this embodiment, the external force is applied to the trigger 33, and one action of the trigger 33 is generated to move the trigger 33, the locking tongue 31 is not moved, and the battery pack 2 is not unlocked relative to the housing 1; the external force is applied to the trigger 33, and another action of the trigger 33 is generated to move the trigger 33 to drive the locking tongue 31 to move away from the locking tongue receiving portion 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0231] As an example, as shown in Figure 39As shown, the locking assembly 3 includes two locking latches 31, two locking latch receiving portions 32, and only one trigger 33. The two locking latches 31 are respectively a first locking latch 3111 and a second locking latch 3112. The two locking latch receiving portions 32 are respectively a first locking latch 3111 receiving portion 32 matched with the first locking latch 3111 and a second locking latch 3112 receiving portion 32 matched with the second locking latch 3112. In this embodiment, an external force is applied to the trigger 33, and one action of the trigger 33 is generated to realize the movement of the trigger 33, drive the first locking latch 3111 to move away from the first locking latch 3111 receiving portion 32, and not release the locking of the battery pack 2 relative to the casing 1. Another action of the trigger 33 is generated to realize the movement of the trigger 33, drive the second locking latch 3112 to move away from the second locking latch 3112 receiving portion 32, and release the locking of the battery pack 2 relative to the casing 1.

[0232] Further, the battery pack 2 includes a battery pack housing 201, and the battery pack housing 201 includes a first outer profile surface 71 and a second outer profile surface 72. The first outer profile surface 71 and the second outer profile surface 72 are oppositely arranged in a direction perpendicular to the insertion direction of the battery pack 2. The first locking latch 3111 and the second locking latch 3112, or the first locking latch 3111 receiving portion 32 and the second locking latch 3112 receiving portion 32, are respectively arranged on the first outer profile surface 71 and the second outer profile surface 72. In a specific example, the locking latches 31 and the trigger 33 are movably arranged on the casing 1, and the locking latch receiving portions 32 are arranged on the battery pack 2. The first locking latch 3111 receiving portion 32 and the second locking latch 3112 receiving portion 32 are respectively arranged on the first outer profile surface 71 and the second outer profile surface 72.

[0233] It should be noted that the embodiments described above can be freely combined among the embodiments without conflicts to form new embodiments, and therefore, the foregoing described embodiments will not be repeated here.

[0234] To solve the technical problem that the battery pack 2 of the power tool is easily unlocked by mistake and then abnormally separated from the power tool, the application further provides an unlocking method of a battery pack 2 matched with a power tool. Referring to Figures 1 to 3 , the power tool includes a casing 1 and a locking assembly 3 arranged on the casing 1. The casing 1 is provided with a battery pack mounting portion 101 for inserting and connecting the battery pack 2. The battery pack 2 is configured to provide electric energy for the power tool. The locking assembly 3 includes a locking latch 31, a locking latch receiving portion 32, and a trigger 33. The locking latch 31 and the trigger 33 are movably arranged on one of the casing 1 and the battery pack 2. The locking latch receiving portion 32 is arranged on the other one of the casing 1 and the battery pack 2. The unlocking method at least includes the following steps:

[0235] In the first step, an external force is applied to the trigger 33, and the trigger 33 moves along a first stroke trajectory, so that the battery pack 2 is not unlocked relative to the case 1.

[0236] In the second step, the external force continues to be applied to the trigger 33, and the trigger 33 moves along a second stroke trajectory, so that the trigger 33 moves and drives the locking tongue 31 to move.

[0237] The second stroke trajectory is different from the first stroke trajectory; there is only one trigger 33.

[0238] It can be understood that the external force is applied to the trigger 33, so that the trigger 33 moves along the first stroke trajectory and the second stroke trajectory, and the battery pack 2 is unlocked relative to the case 1. For example, the operator applies force to the trigger 33 to make the trigger 33 move along the first stroke trajectory and the second stroke trajectory. The trigger 33 is the object of the external force, and of course the object of the force includes but is not limited to the operator, and can also be other force objects. The force applying mode includes direct contact operation, indirect operation to transmit force to the trigger 33, etc., but is not limited thereto.

[0239] Further, the first stroke trajectory and the second stroke trajectory are not on the same straight line. It should be noted that the first stroke trajectory and the second stroke trajectory are not on the same straight line, which can be that the first stroke trajectory and the second stroke trajectory are not straight lines; it can be that the first stroke trajectory and the second stroke trajectory are straight lines, and the directions of the first stroke trajectory and the second stroke trajectory are different; it can also be that the first stroke trajectory and the second stroke trajectory are straight lines, and the first stroke trajectory and the second stroke trajectory are parallel and do not overlap, and it can also be other forms, not limited thereto.

[0240] It can be understood that the first stroke trajectory and the second stroke trajectory are not on the same straight line, which means that the single-direction force applied to the trigger 33 cannot unlock the battery pack 2 relative to the case 1, and the external force that causes the false touch usually only applies a single-direction force. Therefore, the risk of unlocking the battery pack 2 due to false touch can be effectively reduced.

[0241] Further, in the second step, the trigger 33 drives the locking tongue 31 to move, and the battery pack 2 is unlocked relative to the case 1.

[0242] Further, there is only one trigger 33.

[0243] As an example, as shown in Figures 3 to 8 The locking assembly 3 includes one locking tongue 31, one locking tongue receiving portion 32, and only one trigger 33. The unlocking method at least includes the following steps:

[0244] In the first step, an external force is applied to the trigger 33, and the trigger 33 moves along the first stroke trajectory, so that the locking tongue 31 remains stationary and the battery pack 2 does not unlock relative to the housing 1.

[0245] In the second step, external force continues to be applied to the trigger 33, and the trigger 33 moves along the second stroke trajectory, thereby moving the trigger 33 and driving the locking tongue 31 to move and disengage from the locking tongue receiving part 32, so that the battery pack 2 is unlocked relative to the housing 1.

[0246] The locking assembly 3 also includes a latch linkage 34, which is configured to move under the action of the trigger 33, thereby moving the latch 31. In this embodiment, when the user needs to remove the battery pack 2, the battery pack 2 must first be unlocked. The unlocking method specifically includes the following steps:

[0247] In the first step, an external force is applied to the trigger 33, and the trigger 33 moves along the first stroke trajectory, so that the trigger 33 reaches the position that abuts against the locking tongue linkage 34, and the battery pack 2 is not unlocked relative to the housing 1.

[0248] In the second step, external force continues to be applied to the trigger 33, and the trigger 33 moves along the second stroke trajectory, thereby moving the trigger 33 and driving the locking tongue linkage 34 to move, which in turn drives the locking tongue 31 to disengage from the locking tongue receiving part 32, so that the battery pack 2 is unlocked relative to the housing 1.

[0249] Specifically, in the second step, the trigger 33 moves the locking tongue 31, and the battery pack 2 is unlocked relative to the housing 1.

[0250] Specifically, the trigger 33 is movably configured relative to the latch linkage 34 and can abut against the latch linkage 34. The latch linkage 34 is movably configured relative to the latch 31 and can abut against the latch 31; or, the latch linkage 34 and the latch 31 are fixedly connected. The latch linkage 34 pivots about a fixed pivot.

[0251] As another example, such as Figure 39 As shown, the locking component 3 includes two latches 31, two latch receiving parts 32, and only one trigger 33. The two latches 31 are a first latch 3111 and a second latch 3112, respectively. The two latch receiving parts 32 are a first latch 3111 receiving part 32 that cooperates with the first latch 3111 and a second latch 3112 receiving part 32 that cooperates with the second latch 3112. The unlocking method specifically includes the following steps:

[0252] In the first step, an external force is applied to the trigger 33, and the trigger 33 moves along a first stroke trajectory, so that the first locking tongue 3111 moves and disengages from the first locking tongue 3111 receiving part 32, and the battery pack 2 is not unlocked relative to the housing 1.

[0253] In the second step, the external force continues to be applied to the trigger 33, the trigger 33 moves along a second stroke track, the trigger 33 moves to drive the second locking tongue 3112 to move away from the second locking tongue receiving portion 32, so that the battery pack 2 is unlocked relative to the casing 1.

[0254] In one embodiment, referring to Figure 1 , the power tool is a chain saw 100, the chain saw 100 includes a cutting assembly 62 and a top handle 63. The cutting assembly 62 is mounted to the casing 1, the cutting assembly 62 includes a guide plate 641 and a saw chain 621 arranged around the guide plate 641, the guide plate 641 provides support and guidance for the saw chain 621. The top handle 63 is for a user to hold. The cutting assembly 62 is arranged on the front side of the casing 1 in the length extension direction of the chain saw 100; the battery pack mounting portion 101 is arranged on the rear side of the casing 1 in the length extension direction of the chain saw 100; the top handle 63 is arranged above the casing 1 in the height extension direction of the chain saw 100.

[0255] It should be noted that, as shown in Figure 1 , the length extension direction L1 of the chain saw 100 is the length extension direction of the guide plate 641, the height extension direction H1 of the chain saw 100 is the height extension direction of the guide plate 641, and the width extension direction W1 of the chain saw 100 is the thickness extension direction of the guide plate 641.

[0256] The top handle 63 includes a top handle housing 631, the trigger 33 and at least a part of the locking tongue 31 are arranged in the top handle housing 631. It can be understood that the locking tongue 31 and the trigger 33 are movably arranged on the casing 1, and the locking tongue receiving portion 32 is arranged on the battery pack 2, the trigger 33 can be arranged on the top handle housing 631, so that the user can hold and operate the battery pack 2 to unlock at the same time with one hand.

[0257] It should be noted that, in the foregoing embodiments, each embodiment that does not conflict can be freely combined to form a new embodiment, and therefore the foregoing described embodiments will not be repeated here.

[0258] To solve the technical problem that the battery pack 2 of the power tool is easily unlocked by mistake and then abnormally separated from the power tool, the application further provides a power tool, referring to Figures 32 to 36 , including a casing 1 and a locking assembly 3. The casing 1 is provided with a battery pack mounting portion 101 for inserting and connecting the battery pack 2, and the battery pack 2 is configured to provide power for the power tool. The locking assembly 3 includes a locking tongue 31, a locking tongue receiving portion 32 and a trigger 33, the trigger 33 can drive the locking tongue 31 to move relative to the locking tongue receiving portion 32.

[0259] The lock tongue receiving portion 32 includes a first receiving portion 3211 and a second receiving portion 3212 arranged in front of and behind in the insertion direction of the battery pack 2; the lock tongue 31 engages with at least one of the first receiving portion 3211 and the second receiving portion 3212 to lock the battery pack 2 relative to the housing 1; and the lock tongue 31 disengages from the first receiving portion 3211 and the second receiving portion 3212 to unlock the battery pack 2 relative to the housing 1.

[0260] The lock tongue 31 and the trigger 33 are movably arranged on one of the housing 1 and the battery pack 2, and the lock tongue receiving portion 32 is arranged on the other of the housing 1 and the battery pack 2.

[0261] It can be understood that by arranging two lock tongue receiving portions 32 in front of and behind in the insertion direction of the battery pack 2, when the trigger 33 is mistakenly touched to cause the lock tongue 31 to disengage from one of the first receiving portion 3211 and the second receiving portion 3212, the user can immediately perceive and timely reset the unlocking assembly, which can effectively reduce the risk of the battery pack 2 being unlocked due to mistaken touch and then being abnormally separated from the power tool, and improve the use safety.

[0262] With reference to Figure 1 , the battery pack 2 includes a battery pack housing 201 extending along three orthogonal spatial directions (x, y, z) in the directions of a width axis W, a thickness axis T, and a height axis H of the battery pack housing 201. The battery pack housing 201 includes a width extending along the width axis W, a thickness extending along the thickness axis T, and a height extending along the height axis H. The trigger 33 and the lock tongue 31 are both located on one side of a plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness; or, the trigger 33 and the lock tongue 31 are both located on one side of a plane P2 perpendicular to the width axis and passing through the midpoint of the width.

[0263] In one embodiment, all the triggers 33 and all the lock tongues 31 are located on one side of the plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness; or, all the triggers 33 and all the lock tongues 31 are located on one side of the plane P2 perpendicular to the width axis and passing through the midpoint of the width.

[0264] It can be understood that by locating all the triggers 33 and all the lock tongues 31 on one side of the plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness, or on one side of the plane P2 perpendicular to the width axis and passing through the midpoint of the width, the operator can operate the trigger 33 with one hand to control the unlocking of the battery pack 2 relative to the housing 1. In addition, by locating all the triggers 33 and all the lock tongues 31 on one side of the plane P1 or the plane P2, the structural design of the locking assembly 3 is simpler and more compact, which is conducive to reducing the size of the power tool and facilitating the lightweight design of the power tool.

[0265] With reference to Figure 3The battery pack 2 comprises a battery pack housing 201, the battery pack housing 201 comprises a first outer profile surface 71 and a second outer profile surface 72, the first outer profile surface 71 and the second outer profile surface 72 are oppositely arranged in a direction perpendicular to the insertion direction of the battery pack 2, at least part of the lock tongue 31 or the lock tongue receiving portion 32 is arranged on the first outer profile surface 71, and the trigger 33 and the lock tongue 31 are both located on one side of the second outer profile surface 72. In one embodiment, all the triggers 33 and all the lock tongues 31 are located on one side of the second outer profile surface.

[0266] It can be understood that all the triggers 33 and all the lock tongues 31 are located on one side of the second outer profile surface, which facilitates the operator to operate the trigger 33 with one hand to control the battery pack 2 to be unlocked relative to the tool housing 1. In addition, all the triggers 33 and all the lock tongues 31 are located on one side of the second outer profile surface, which makes the structure design of the locking assembly 3 more simple and compact, which is beneficial to reduce the volume of the power tool and facilitate the lightweight design of the power tool.

[0267] The power tool is configured to apply an external force to the trigger 33 to drive the lock tongue 31 to move a first stroke and a second stroke. The lock tongue 31 moves the first stroke to make the lock tongue 31 disengage from the first receiving portion 3211, and the battery pack 2 is not unlocked relative to the tool housing 1; the lock tongue 31 moves the second stroke to make the lock tongue 31 disengage from the second receiving portion 3212, and then the battery pack 2 is unlocked relative to the tool housing 1. Further, the power tool is configured to apply an external force to the trigger 33 to drive the lock tongue 31 to move the first stroke and the second stroke in sequence.

[0268] In one embodiment, the lock tongue 31 and the trigger 33 are movably arranged on the tool housing 1, and the first receiving portion 3211 and the second receiving portion 3212 are arranged on the battery pack 2.

[0269] In another embodiment, the lock tongue 31 and the trigger 33 are movably arranged on the battery pack 2, and the first receiving portion 3211 and the second receiving portion 3212 are arranged on the tool housing 1.

[0270] In one embodiment, referring to Figures 32 to 36 The locking assembly 3 only comprises one lock tongue 31. The lock tongue 31 is engaged with the first receiving portion 3211 to lock the battery pack 2 at the first position relative to the tool housing 1; the lock tongue 31 is engaged with the second receiving portion 3212 to lock the battery pack 2 at the second position relative to the tool housing 1. Further, only when the lock tongue 31 is engaged with the first receiving portion 3211, the battery pack 2 forms an electrical connection with the power tool.

[0271] In one embodiment, the number of triggers 33 is only one, and one trigger 33 drives the lock tongue 31 to move the first stroke or the second stroke.

[0272] In one embodiment, the first receiving portion 3211 and the second receiving portion 3212 have different depths, and a step is provided between the first receiving portion 3211 and the second receiving portion 3212. In this way, after the battery pack 2 is disengaged from the first receiving portion 3211, the battery pack 2 can slide to a position where the lock tongue 31 engages with the second receiving portion 3212.

[0273] It can be understood that the unlocking assembly only includes one trigger 33, which drives the lock tongue 31 to move a first stroke to disengage the lock tongue 31 from the first receiving portion 3211, or drives the lock tongue 31 to move a second stroke to disengage the lock tongue 31 from the first receiving portion 3211 and the second receiving portion 3212, thereby achieving the unlocking of the battery pack 2 relative to the case 1.

[0274] As a specific example, referring to Figures 32 to 36 , the locking assembly 3 includes a lock tongue 31, a trigger 33, and a first receiving portion 3211 and a second receiving portion 3212. The lock tongue 31 engages with the first receiving portion 3211 to lock the battery pack 2 in the first position relative to the case 1. The lock tongue 31 engages with the second receiving portion 3212 to lock the battery pack 2 in the second position relative to the case 1. The trigger 33 drives the lock tongue 31 to move a first stroke to disengage the lock tongue 31 from the first receiving portion 3211, and the battery pack 2 slides from the first position to the second position relative to the case 1, so that the lock tongue 31 engages with the second receiving portion 3212. The trigger 33 continues to drive the lock tongue 31 to move a second stroke to disengage the lock tongue 31 from the second receiving portion 3212, thereby achieving the unlocking of the battery pack 2 relative to the case 1. The lock tongue 31 and the trigger 33 are movably arranged on the case 1, and the first receiving portion 3211 and the second receiving portion 3212 are arranged on the battery pack 2. All triggers 33 and all lock tongues 31 are located on one side of the plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness. The first outer contour surface 71 and the second outer contour surface 72 are oppositely arranged in the thickness direction of the battery pack 2, the first receiving portion 3211 and the second receiving portion 3212 are arranged on the first outer contour surface 71, all triggers 33 and all lock tongues 31 are located on one side of the second outer contour surface 72, and further, all triggers 33, all lock tongues 31, and all lock tongue receiving portions 32 are located on one side of the second outer contour surface 72.

[0275] As another specific example (not shown), the locking assembly 3 includes two locking latches 31, one trigger 33, and a first receiving portion 3211 and a second receiving portion 3212, the two locking latches 31 are a first locking latch 3111 and a second locking latch 3112 respectively, the first locking latch 3111 is engaged with the first receiving portion 3211, and the second locking latch 3112 is engaged with the second receiving portion 3212. The trigger 33 first drives the first locking latch 3111 to move a first stroke, so that the first locking latch 3111 is disengaged from the first receiving portion 3211, and then the trigger 33 drives the second locking latch 3112 to move a second stroke, so that the second locking latch 3112 is disengaged from the second receiving portion 3212, thereby realizing the unlocking of the battery pack 2 relative to the housing 1. The first locking latch 3111, the second locking latch 3112 and the trigger 33 are movably arranged on the housing 1, and the first receiving portion 3211 and the second receiving portion 3212 are arranged on the battery pack 2. All triggers 33 and all locking latches 31 are located on one side of the plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness. The first outer contour surface 71 and the second outer contour surface 72 are oppositely arranged in the thickness direction of the battery pack 2, the first receiving portion 3211 and the second receiving portion 3212 are arranged on the first outer contour surface 71, and all triggers 33 and all locking latches 31 are located on one side of the second outer contour surface 72. Further, all triggers 33, all locking latches 31 and all locking latch receiving portions 32 are located on one side of the second outer contour surface 72.

[0276] In one embodiment, referring to Figure 1 , the power tool is a chain saw 100, and the chain saw 100 includes a cutting assembly 62 and a top handle 63. The cutting assembly 62 is mounted to the housing 1, and the cutting assembly 62 includes a guide plate 641 and a saw chain 621 arranged around the guide plate 641, the guide plate 641 provides support and guidance for the saw chain 621. The top handle 63 is for a user to hold. The cutting assembly 62 is arranged on the front side of the housing 1 in the length extension direction of the chain saw 100; the battery pack mounting portion 101 is arranged on the rear side of the housing 1 in the length extension direction of the chain saw 100; and the top handle 63 is arranged above the housing 1 in the height extension direction of the chain saw 100.

[0277] It should be noted that, as shown in Figure 1 , the length extension direction L1 of the chain saw 100 is the length extension direction of the guide plate 641, the height extension direction H1 of the chain saw 100 is the height extension direction of the guide plate 641, and the width extension direction W1 of the chain saw 100 is the thickness extension direction of the guide plate 641.

[0278] The top handle 63 comprises a top handle housing 631, and the trigger 33 and at least a part of the lock tongue 31 are arranged in the top handle housing 631. It can be understood that, the lock tongue 31 and the trigger 33 are movably arranged on the machine shell 1, and the lock tongue receiving portion 32 is arranged on the battery pack 2, so that the trigger 33 can be arranged on the top handle housing 631, facilitating a user to hold and operate the battery pack 2 to be unlocked by one hand.

[0279] It should be noted that, in the foregoing embodiments, each of the embodiments without conflicts can be freely combined to form a new embodiment, and therefore, the foregoing described embodiments will not be repeated here.

[0280] In one specific embodiment, referring to Figures 1 to 3 , the power tool comprises a machine shell 1 and a locking assembly 3. The machine shell 1 is provided with a battery pack mounting portion 101 for inserting and connecting the battery pack 2, and the battery pack 2 is configured to provide power for the power tool. The locking assembly 3 comprises a lock tongue 31, a lock tongue receiving portion 32 and a trigger 33.

[0281] The lock tongue 31 and the trigger 33 are movably arranged on one of the machine shell 1 and the battery pack 2, and the lock tongue receiving portion 32 is arranged on the other one of the machine shell 1 and the battery pack 2. The lock tongue 31 is engaged with the lock tongue receiving portion 32 to lock the battery pack 2 relative to the machine shell 1, and the lock tongue 31 is disengaged from the lock tongue receiving portion 32 to unlock the battery pack 2 relative to the machine shell 1.

[0282] The power tool is configured to apply an external force to the trigger 33, and at least two different actions of the trigger 33 directly or indirectly drive the lock tongue 31 to move relative to the lock tongue receiving portion 32 to unlock the battery pack 2 relative to the machine shell 1.

[0283] It can be understood that the at least two different actions of the trigger 33 are actions of the trigger 33 caused by the external force applied to the trigger 33, for example, actions of the trigger 33 caused by the operator applying force to the trigger 33. The trigger 33 is the object of the external force, and of course the object of the force includes but is not limited to the operator, and can also be other force objects. The force applying mode includes direct contact operation, indirect operation to transmit force to the trigger 33, etc., but is not limited thereto.

[0284] The at least two different actions of the trigger 33 are required to unlock the battery pack 2 relative to the machine shell 1, that is, a single action is not enough to unlock the battery pack 2 relative to the machine shell 1, and the external force that causes accidental touch usually only causes a single action of the trigger 33. Therefore, the at least two different actions of the trigger 33 to unlock the battery pack 2 relative to the machine shell 1 can effectively reduce the risk of unlocking the battery pack 2 due to accidental touch.

[0285] Referring to Figure 1The battery pack 2 comprises a battery pack housing 201 extending along three orthogonal spatial directions (x, y, z) in the direction of a width axis W, a thickness axis T, a height axis H of the battery pack housing 201. The battery pack housing 201 comprises a width extending in the direction of the width axis W, a thickness extending in the direction of the thickness axis T, and a height extending in the direction of the height axis H. The trigger 33 is located on one side of a plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness; or the trigger 33 is located on one side of a plane P2 perpendicular to the width axis and passing through the midpoint of the width.

[0286] Optionally, all the triggers 33, all the latches 31 are located on one side of the plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness; or all the triggers 33, all the latches 31 are located on one side of the plane P2 perpendicular to the width axis and passing through the midpoint of the width. Further optionally, all the triggers 33, all the latches 31, all the latch receiving portions 32 are located on one side of the plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness; or all the triggers 33, all the latches 31, all the latch receiving portions 32 are located on one side of the plane P2 perpendicular to the width axis and passing through the midpoint of the width.

[0287] It should be noted that the battery pack housing 201 extends in the direction of the width axis W, the thickness axis T, the height axis H, wherein the battery pack housing 201 is not limited to a standard cuboid, but can be other irregular shapes, such as chamfered edges, partially recessed or protruding surfaces, etc. The width axis W direction, the thickness axis T direction, the height axis H direction are only used to illustrate the general extension direction of the battery pack housing 201. Among them, the width of the battery pack housing 201 is the line segment between the footprints on the same width axis W of the two outermost points on the opposite surfaces of the battery pack 2 in the width axis W direction; the midpoint of the width is the midpoint of the line segment. The thickness of the battery pack housing 201 is the line segment between the footprints on the same thickness axis T of the two outermost points on the opposite surfaces of the battery pack 2 in the thickness axis T direction; the midpoint of the thickness is the midpoint of the line segment. The height of the battery pack housing 201 is the line segment between the footprints on the same height axis H of the two outermost points on the opposite surfaces of the battery pack 2 in the height axis H direction.

[0288] It can be understood that all the triggers 33 are located on one side of the plane P1 or the plane P2, which facilitates the operator to operate the trigger 33 with one hand to control the battery pack 2 to be unlocked relative to the tool housing 1. More elements in all the triggers 33, all the latches 31, all the latch receiving portions 32 are located on the same side of the plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness, which makes the structural design of the locking assembly 3 more simple and compact, which is beneficial to reduce the volume of the power tool and facilitate the lightweight design of the power tool.

[0289] Referring toFigure 3 The battery pack 2 comprises a battery pack housing 201, the battery pack housing 201 comprises a first outer profile surface 71 and a second outer profile surface 72, the first outer profile surface 71 and the second outer profile surface 72 are oppositely arranged in a direction perpendicular to the insertion direction of the battery pack 2, at least part of the lock tongue 31 or the lock tongue receiving portion 32 is arranged on the first outer profile surface 71, and all the trigger pieces 33 are located on one side of the second outer profile surface 72. When the electric tool is configured as a chain saw 100, the chain saw 100 comprises: a cutting assembly 62 mounted to the machine housing 1, the cutting assembly 62 comprises a guide plate 641 and a saw chain 621 arranged around the guide plate 641, the guide plate 641 provides support and guidance for the saw chain 621. The battery pack 2 is inserted and mounted to the battery pack mounting portion 101 in a manner that the first outer profile surface 71 and the second outer profile surface 72 of the battery pack 2 are spaced and oppositely arranged in a first direction perpendicular to the plane on which the guide plate 641 is located, at least part of the lock tongue 31 or the lock tongue receiving portion 32 is arranged on the first outer profile surface 71, and one trigger piece 33 or a plurality of trigger pieces 33 are located on one side of the second outer profile surface 72, or

[0290] The battery pack 2 is inserted and mounted to the battery pack mounting portion 101 in a manner that the first outer profile surface 71 and the second outer profile surface 72 of the battery pack 2 are spaced and oppositely arranged in a second direction parallel to the plane on which the guide plate 641 is located, at least part of the lock tongue 31 or the lock tongue receiving portion 32 is arranged on the first outer profile surface 71, and one trigger piece 33 or a plurality of trigger pieces 33 are located on one side of the second outer profile surface 72.

[0291] Further, the chain saw 100 is configured as an arboreal chain saw 100. The chain saw 100 further comprises a top handle 63 for a user to hold; the cutting assembly 62 is arranged on the front side of the machine housing 1 in the length extension direction of the chain saw 100; the battery pack mounting portion 101 is arranged on the rear side of the machine housing 1 in the length extension direction of the chain saw 100; and the top handle 63 is arranged above the machine housing 1 in the height extension direction of the chain saw 100.

[0292] The number of lock tongues 31 can be one or more, and the number of lock tongue receiving portions 32 matched with the one or more lock tongues 31 can also be one or more; accordingly, the number of trigger pieces 33 can also be one or more.

[0293] In this embodiment, the locking assembly 3 comprises a locking tongue 31, a locking tongue receiving portion 32, and a trigger 33. The locking tongue 31 and the trigger 33 are movably arranged on the casing 1, and the locking tongue receiving portion 32 is arranged on the battery pack 2. All the triggers 33, all the locking tongues 31, and all the locking tongue receiving portions 32 are located on one side of a plane P1 which is perpendicular to the thickness axis and passes through the midpoint of the thickness. The first outer profile surface 71 and the second outer profile surface 72 are oppositely arranged in the thickness direction of the battery pack 2, the locking tongue receiving portion 32 is arranged on the first outer profile surface 71, and all the triggers 33, all the locking tongues 31, and all the locking tongue receiving portions 32 are located on one side of the second outer profile surface 72.

[0294] Based on the external force applied on the trigger 33, at least two different actions generated by the trigger 33 include: one action generated by the trigger 33, which enables the trigger 33 to move and the battery pack 2 not to be unlocked relative to the casing 1; and another action generated by the trigger 33, which enables the trigger 33 to move and the locking tongue 31 to move, so that the battery pack 2 is unlocked relative to the casing 1. For the convenience of description, the one action is referred to as a first action, and the other action is referred to as a second action.

[0295] It should be noted that the first action and the second action are only used to represent two different actions, and the first and the second do not limit the order of the two actions or the continuity of the two actions. For example, there can be other actions between the two actions.

[0296] It can be understood that the first action of the trigger 33 enables the battery pack 2 not to be unlocked relative to the casing 1, and the second action of the trigger 33 enables the battery pack 2 to be unlocked relative to the casing 1. That is, based on at least the first action and the second action of the trigger 33, the battery pack 2 can be unlocked relative to the casing 1.

[0297] Based on the external force applied on the trigger 33, at least two different actions generated by the trigger 33 include: one action generated by the trigger 33, which is the first action, which enables the trigger 33 to move and the locking tongue 31 not to move; and another action generated by the trigger 33, which is the second action, which enables the trigger 33 to move and the locking tongue 31 to move.

[0298] The locking assembly 3 further comprises a locking tongue linkage 34. One action generated by the trigger 33, which is the first action, enables the trigger 33 to be in a position allowing the locking tongue 31 to move. Another action generated by the trigger 33, which is the second action, enables the locking tongue linkage 34 to move and the locking tongue 31 to move relative to the locking tongue receiving portion 32.

[0299] It should be understood that the trigger 33 is in a position allowing the movement of the lock tongue 31, that is, the user can directly apply force to the trigger 33 to move the trigger 33, and the movement of the trigger 33 can drive the movement of the lock tongue 31.

[0300] The lock tongue linkage 34 is configured to move under the drive of the trigger 33, and further drive the movement of the lock tongue 31. The trigger 33 is movably arranged relative to the lock tongue linkage 34 and can abut against the lock tongue linkage 34. The lock tongue linkage 34 is movably arranged relative to the lock tongue 31 and can abut against the lock tongue 31, or the lock tongue linkage 34 is fixedly connected to the lock tongue 31. The lock tongue linkage 34 is pivotally movable about a fixed pivot.

[0301] Referring to Figures 3 to 8 The lock assembly 3 further includes a lock tongue linkage 34. The trigger 33 is pivotally movable about a pivot, and a first action of the trigger 33 realizes the movement of the trigger 33 to a position abutting against the lock tongue linkage 34. A second action of the trigger 33 realizes the movement of the trigger 33 to drive the movement of the lock tongue linkage 34 and further drive the movement of the lock tongue 31 to disengage from the lock tongue receiving portion 32. In this embodiment, the first action of the trigger 33 realizes the movement of the trigger 33, and the lock tongue 31 does not move.

[0302] The lock tongue linkage 34 is pivotally arranged about a first pivot 335 on the casing 1 or the battery pack casing 201. The lock tongue linkage 34 includes a lock tongue abutting portion 341 and a trigger abutting portion 342. The trigger 33 is movably arranged on the casing 1 or the battery pack casing 201 and can move to abut against the trigger abutting portion 342 and drive the pivot movement of the lock tongue linkage 34 about the first pivot 335. The lock tongue abutting portion 341 is configured to abut against the lock tongue 31 and drive the movement of the lock tongue 31 away from the lock tongue receiving portion 32.

[0303] The trigger 33 is pivotally connected to the casing 1 or the battery pack casing 201 about a second pivot 336, or the trigger 33 is pivotally connected to the lock tongue linkage 34 about the second pivot 336. A first action of the trigger 33 realizes the pivot movement of the trigger 33 about the second pivot 336 to abut against the lock tongue linkage 34. A second action of the trigger 33 realizes the movement of the trigger 33 to drive the pivot movement of the lock tongue linkage 34 about the first pivot 335, and the lock tongue linkage 34 drives the movement of the lock tongue 31 to disengage from the lock tongue receiving portion 32. In this embodiment, the trigger 33 is pivotally connected to the lock tongue linkage 34 about the second pivot 336.

[0304] The number of the trigger pieces 33 is only one, one action, i.e. the first action, generated by one trigger piece 33, realizes the movement of the trigger piece 33 and the battery pack 2 is not unlocked relative to the housing 1; another action, i.e. the second action, generated by one trigger piece 33, realizes the movement of the trigger piece 33 and the movement of the locking tongue 31, so that the battery pack 2 is unlocked relative to the housing 1.

[0305] The number of the trigger pieces 33 is only one, one action, i.e. the first action, generated by one trigger piece 33, realizes the movement of the trigger piece 33 and the battery pack 2 is not unlocked relative to the housing 1; another action, i.e. the second action, generated by one trigger piece 33, realizes the movement of the trigger piece 33 and the movement of the locking tongue 31, so that the battery pack 2 is unlocked relative to the housing 1.

[0306] It should be noted that the "in sequence" in "at least two different actions in sequence on the trigger piece 33" is only used to limit that the two actions occur in sequence and have progression, and the previous unlocking action is completed before the subsequent unlocking action is applied, and does not limit the continuity of the two actions. There can be other actions between the two actions.

[0307] In the embodiment, the first action of the trigger piece 33 realizes the movement of the trigger piece 33, the locking tongue 31 is not moved, and the battery pack 2 is not unlocked relative to the housing 1; the second action of the trigger piece 33 realizes the movement of the trigger piece 33 and the movement of the locking tongue 31 away from the locking tongue receiving portion 32, so that the battery pack 2 is unlocked relative to the housing 1. The first action and the second action are generated in sequence on one trigger piece 33.

[0308] In one embodiment, one action of the trigger piece 33 realizes the first stroke trajectory of the trigger piece 33; another action of the trigger piece 33 realizes the second stroke trajectory of the trigger piece 33 different from the first stroke trajectory. The electric tool is configured to: based on at least the first stroke trajectory and the second stroke trajectory, the battery pack 2 is unlocked relative to the housing 1. The first stroke trajectory and the second stroke trajectory of the trigger piece 33 are not on a straight line.

[0309] It should be noted that the stroke trajectory can be the movement trajectory of any point on the trigger piece 33. The first stroke trajectory and the second stroke trajectory are not on a straight line, which can be that the first stroke trajectory and the second stroke trajectory are not straight lines; can be that the first stroke trajectory and the second stroke trajectory are straight lines, and the directions of the first stroke trajectory and the second stroke trajectory are different; can also be that the first stroke trajectory and the second stroke trajectory are straight lines, and the first stroke trajectory and the second stroke trajectory are parallel and do not overlap, and can also be other forms, not limited thereto.

[0310] It can be understood that the first stroke trajectory and the second stroke trajectory are not on a straight line, which means that a single direction force applied on the trigger piece 33 cannot unlock the battery pack 2 relative to the housing 1, and the external force causing the false touch usually only applies a single direction force. Therefore, the risk of unlocking the battery pack 2 due to false touch can be effectively reduced.

[0311] The number of trigger pieces 33 is only one, and the first stroke trajectory and the second stroke trajectory are generated by the movement of the same trigger piece 33 in sequence; or the number of trigger pieces 33 is configured to be at least two, and the first stroke trajectory and the second stroke trajectory are generated by the movement of different trigger pieces 33. The first stroke trajectory and the second stroke trajectory are different in direction or parallel.

[0312] In this embodiment, as shown in the figure, the locking assembly 3 only includes one trigger piece 33, and the first stroke trajectory and the second stroke trajectory are generated by the movement of the same trigger piece 33 in sequence. Specifically, the trigger piece 33 makes a pivotal movement around a pivot, the trigger piece 33 moves along the first stroke trajectory, reaches a position capable of driving the lock tongue 31 to move, and the trigger piece 33 continues to move along the second stroke trajectory, driving the lock tongue 31 to move away from the lock tongue receiving portion 32. In this embodiment, since the trigger piece 33 makes a pivotal movement, the first stroke trajectory and the second stroke trajectory are both arcs, and they do not overlap.

[0313] In related technologies, in order to solve the technical problem that the battery pack 2 of the electric tool is easily unlocked by mistake and then abnormally separated from the electric tool, two pairs of interlocking mechanisms are arranged between the battery pack 2 and the shell 1 of the electric tool, that is, the electric tool is provided with two lock tongues 31, two lock tongue receiving portions 32 respectively matched with the two lock tongues 31, and two trigger pieces 33 respectively used for controlling the movement of the two lock tongues 31. However, the conventional battery pack 2 usually only has one lock tongue receiving portion 32, which causes the electric tool to be unable to be compatible with the existing battery pack 2 platform and to realize the function of preventing the battery pack 2 from being unlocked by mistake.

[0314] In one embodiment, the lock tongue 31 and the trigger piece 33 are movably arranged on the shell 1, and the lock tongue receiving portion 32 is arranged on the battery pack 2. The number of lock tongue receiving portions 32 is only one, and the lock tongue receiving portion 32 is configured to be engaged with at least one lock tongue 31.

[0315] In this embodiment, the locking assembly 3 includes one lock tongue 31, one lock tongue receiving portion 32, and one trigger piece 33. Based on the external force applied to the trigger piece 33, the first action of the trigger piece 33 is generated, the trigger piece 33 moves, the lock tongue 31 does not move, and the battery pack 2 is not unlocked relative to the shell 1. Based on the external force applied to the trigger piece 33, the second action of the trigger piece 33 is generated, the trigger piece 33 moves to drive the lock tongue 31 to move away from the lock tongue receiving portion 32, and the battery pack 2 is unlocked relative to the shell 1.

[0316] In this embodiment, only one lock tongue receiving portion 32 is provided, and at least two different actions of the trigger piece 33 are generated by applying force to the trigger piece 33 to achieve the unlocking of the battery pack 2 relative to the shell 1, which can effectively reduce the risk of unlocking the battery pack 2 due to mistake, and can be compatible with the existing battery pack 2 with only one lock tongue receiving portion 32.

[0317] The chain saw 100 for working on a tree is usually used by a user for working on a tree, and the working environment is relatively complex. When the user climbs the tree, the chain saw 100 is usually hung on the body of the user. During the process of climbing the tree, the chain saw 100 will shake. Therefore, during the process of the user climbing the tree and working on the tree, the battery pack 2 unlocking key can touch the branches or the body of the user, which can cause the battery pack 2 to be unlocked due to accidental touch, so that the battery pack 2 is abnormally separated from the chain saw 100, causing harm to people or animals around or damage to articles, and there is a great safety hazard.

[0318] In the embodiment, the electric tool is the chain saw 100, and the chain saw 100 includes a cutting assembly 62 and a top handle 63. The cutting assembly 62 is installed on the housing 1, and the cutting assembly 62 includes a guide plate 641 and a saw chain 621 arranged around the guide plate 641. The guide plate 641 provides support and guidance for the saw chain 621. The top handle 63 is used for the user to hold. The cutting assembly 62 is arranged on the front side of the housing 1 in the length extension direction of the chain saw 100. The battery pack mounting portion 101 is arranged on the rear side of the housing 1 in the length extension direction of the chain saw 100. The top handle 63 is arranged above the housing 1 in the height extension direction of the chain saw 100.

[0319] It should be noted that, as shown in the drawings, the length extension direction L1 of the chain saw 100 is the length extension direction of the guide plate 641, the height extension direction H1 of the chain saw 100 is the height extension direction of the guide plate 641, and the width extension direction W1 of the chain saw 100 is the thickness extension direction of the guide plate 641. Figure 1 The top handle 63 includes a top handle shell 631, and at least a part of the lock tongue 31 and the trigger 33 is arranged in the top handle shell 631. It can be understood that, when the lock tongue 31 and the trigger 33 are movably arranged on the housing 1 and the lock tongue receiving portion 32 is arranged on the battery pack 2, the trigger 33 can be arranged on the top handle shell 631, so that the user can hold and operate the battery pack 2 unlocking at the same time with one hand.

[0320] The electric tool of the embodiment, when the user needs to disassemble the battery pack 2, first needs to unlock the battery pack 2. The unlocking of the battery pack 2 specifically includes the following steps:

[0321] Step 1, the trigger 33 is in the initial position without external force, that is, in the state shown in the drawings, the user applies an upward overturning force to the operation end 3311 of the trigger 33, so that the trigger 33 is pivoted to the trigger abutting portion 342 of the lock tongue linkage 34, that is, in the state shown in the drawings.

[0322] Figure 6 Figure 7

[0323] ​​​Step 2, further push the operation end 3311 of the trigger 33, the trigger 33 moves to drive the lock tongue linkage 34 to make a pivoting movement around the first pivot 335, and then the lock tongue abutting portion 341 of the lock tongue linkage 34 pushes the lock tongue 31 abutting thereto to move, until the convex portion 311 of the lock tongue 31 is disengaged from the concave portion 321 of the lock slot, that is Figure 8 The state shown, at this time the battery pack 2 is unlocked relative to the shell 1, and the battery pack 2 can be separated from the power tool;

[0324] Step 3, after the battery pack 2 is separated from the power tool, the user releases the trigger 33, such as releasing the fingers, and does not apply any force to the trigger 33, at this time the lock tongue 31 will reset under the action of the lock tongue elastic reset member 36, and the trigger 33 will reset under the action of the trigger 33 reset member, so that the locking assembly 33 returns to the initial state.

[0325] It should be noted that in the foregoing embodiments, each of the embodiments without conflict can be freely combined to form a new embodiment, and therefore the foregoing described embodiments will not be repeated here.

[0326] The following is a detailed introduction to the specific structure in the embodiment where the trigger 33 is only one:

[0327] Referring to Figure 4 and Figure 5 , the locking assembly 33 includes a lock tongue 31, a lock tongue receiving portion 32, and a trigger 33. The lock tongue 31 and the trigger 33 (which can be referred to as a trigger mechanism) are movably arranged on one of the shell 1 and the battery pack housing 201, and the lock tongue receiving portion 32 is arranged on the other one of the shell 1 and the battery pack housing 201. The lock tongue 31 can be engaged with the lock tongue receiving portion 32 to lock the battery pack 2 relative to the shell 1. The trigger 33 can act on the lock tongue 31 and link the lock tongue 31 to move, and the trigger 33 is configured to control the lock tongue 31 and the lock tongue receiving portion 32 to disengage based on at least two unlocking actions applied to the trigger 33, so that the battery pack 2 is unlocked relative to the shell 1.

[0328] The unlocking action is configured to apply a force to the trigger 33 and to cause the trigger 33 to produce a movement stroke. The at least two unlocking actions applied to the trigger 33 include at least two unlocking actions corresponding to different directions of the force applied to the trigger 33 within at least part of the movement stroke, or two unlocking actions with the same direction of the force applied intermittently.

[0329] It should be noted that the two unlocking actions applied to the trigger 33 intermittently should be understood as: the two unlocking actions cannot be continuously and uniformly applied to the trigger 33, and need to be operated intermittently. As an example, the two unlocking actions have progression, and the previous unlocking action must be completed before the subsequent unlocking action can be applied.

[0330] The lock tongue receiving portion 32 comprises at least one stop space capable of engaging with and stopping the lock tongue 31. At least two unlocking actions applied to the trigger 33 can drive the lock tongue 31 to move a stroke and disengage from the stop space of the lock tongue receiving portion 32, so as to release the lock between the battery pack 2 and the shell 1.

[0331] It can be understood that the disengagement of the lock tongue 31 from the lock tongue receiving portion 32 can be the disengagement of the lock tongue 31 from all stop spaces of the lock tongue receiving portion 32.

[0332] The battery pack 2 and the battery pack mounting portion 101 comprise a plurality of sets of matching surfaces located at different sides of the battery pack 2, and the locking assembly 33 is arranged on one set of matching surfaces.

[0333] The user can release the lock between the battery pack 2 and the shell 1 by applying at least two unlocking actions to the trigger 33. Therefore, the risk of unlocking of the battery pack 2 due to accidental touch can be effectively reduced, the harm to people or objects around the working environment can be reduced, and the safety hazard can be effectively reduced.

[0334] Further, the locking assembly 33 further comprises a lock tongue elastic reset member 36, which acts on the lock tongue 31 to apply a force to the lock tongue 31 to move it towards the lock tongue receiving portion 32. As an example, the lock tongue elastic reset member 36 can be a spring.

[0335] The locking assembly 33 further comprises a lock tongue linkage member 34. The trigger 33 and the lock tongue linkage member 34 are movably arranged, and the lock tongue linkage member 34 can drive the lock tongue 31 to move. The at least two unlocking actions applied to the trigger 33 include a first unlocking action and a second unlocking action, which respectively cause the trigger 33 to generate a first stroke and a second stroke. The first stroke is configured to move the trigger 33 to a position where the lock tongue linkage member 34 can be triggered; the second stroke is configured to move the lock tongue linkage member 34 to drive the lock tongue 31 to move through the movement of the trigger 33, until the lock tongue 31 is disengaged from the lock tongue receiving portion 32, so as to release the lock between the battery pack 2 and the shell 1. The first stroke and the second stroke correspond to different directions of the force applied to the trigger 33 in at least part of the moving stroke.

[0336] Further, the trigger 33 further comprises a trigger elastic reset member 334, and the trigger 33 comprises an initial position in a state where no unlocking action is applied thereto. The trigger elastic reset member 334 acts on the trigger 33 to apply a force to the trigger 33 to move it towards the initial position.

[0337] In one embodiment, the lock tongue linkage 34 is pivotally arranged on the casing 1 or the battery pack casing 201 about the first pivot shaft 335, and the lock tongue linkage 34 comprises a lock tongue abutting portion 341 and a trigger abutting portion 342, and the trigger abutting portion 342 is synchronously pivotally moved with the lock tongue abutting portion 341 about the first pivot shaft 335. The trigger 33 is movably arranged on the casing 1 or the battery pack casing 201, and is movable to abut against the trigger abutting portion 342 and drive the trigger abutting portion 342 to pivotally move about the first pivot shaft 335. The lock tongue abutting portion 341 is used to abut against the lock tongue 31 and pivotally move with the trigger abutting portion 342 about the first pivot shaft 335, thereby driving the lock tongue 31 to move away from the lock tongue receiving portion 32. Specifically, the lock tongue linkage 34 has a through shaft hole 343 through which the first pivot shaft 335 passes, and the lock tongue linkage 34 is pivotally arranged on the first pivot shaft 335 through the through shaft hole 343.

[0338] It can be understood that the lock tongue linkage 34 can be an integral structure, and the lock tongue abutting portion 341 and the trigger abutting portion 342 are formed on the integral structure in different directions. The lock tongue linkage 34 can also comprise two separate elements, and the lock tongue abutting portion 341 and the trigger abutting portion 342 are respectively formed on the two separate elements, and the two separate elements are synchronously linked in an abutting manner.

[0339] Further, the lock tongue abutting portion 341 and the trigger abutting portion 342 are located on two sides of a plane that is parallel to the movement direction of the lock tongue 31 and passes through the pivot axis of the first pivot shaft 335. Preferably, the angle between the extension direction of the lock tongue abutting portion 341 and the extension direction of the trigger abutting portion 342 is 90°-180°.

[0340] In one embodiment, the trigger 33 is configured to be subjected to the first unlocking action and the second unlocking action. The first stroke is configured to move the trigger 33 to abut against the lock tongue linkage 34. The second stroke is configured to further move the trigger 33 and drive the lock tongue linkage 34 to move, and the lock tongue linkage 34 drives the lock tongue 31 to move until the lock tongue 31 is disengaged from the lock tongue receiving portion 32, so that the battery pack 2 is unlocked relative to the casing 1.

[0341] In one embodiment, the lock tongue linkage 34 is movably arranged relative to the lock tongue 31 and can abut against the lock tongue 31. It can be understood that the lock tongue linkage 34 and the lock tongue 31 are two independent components.

[0342] In one embodiment, the lock tongue 31 is provided with a blocking wall 312 for abutting against the lock tongue linkage 34. The lock tongue 31 is further provided with a reset member mounting portion 313, one end of the lock tongue elastic reset member 36 is attached to the reset member mounting portion 313, and the other end abuts against the casing 1 or the battery pack casing 201.

[0343] Further, the lock tongue 31 is provided with an embedded groove 314 into which a lock tongue abutting portion 341 of the lock tongue linkage 34 extends to limit the pivoting direction of the lock tongue abutting portion 341. The reset member mounting portion 313 is at least partially arranged in the embedded groove 314, and the embedded groove 314 is open at the middle of the side wall away from the protruding portion 311 to allow the lock tongue elastic reset member 36 to extend out, and the side walls are provided with the aforementioned stop walls 312 for abutting against the lock tongue linkage 34. As an example, the lock tongue elastic reset member 36 is a spring, and the reset member mounting portion 313 is a column body fixed in the embedded groove 314 and gradually narrowed at the head portion, so that the spring can be sleeved and clamped at the front end of the column body. By arranging the reset member mounting portion 313 in the embedded groove 314, the structure of the lock tongue 31 is more compact and smaller in size.

[0344] In one embodiment, the lock tongue 31 and the trigger member 33 are arranged on the case 1, and the lock tongue receiving portion 32 is arranged on the battery pack 2; the case 1 is provided with a through hole for the lock tongue 31 to extend into the battery pack mounting portion 101.

[0345] In another embodiment, the lock tongue 31 and the trigger member 33 are arranged on the battery pack case 201, and the lock tongue receiving portion 32 is arranged on the case 1; the battery pack case 201 is provided with a through hole for the lock tongue 31 to extend into the battery pack mounting portion 101.

[0346] The lock tongue receiving portion 32 is a lock slot or a lock hole arranged on the case 1 or the battery pack case 201. It can be understood that the lock slot or the lock hole, i.e., the stop space of the lock tongue receiving portion 32, can stop the lock tongue 31.

[0347] The lock tongue 31 includes at least one protruding portion 311, and the lock tongue receiving portion 32 includes at least one recessed portion 321; the protruding portion 311 of the lock tongue 31 is engaged with the recessed portion 321 of the lock tongue receiving portion 32, so that the battery pack 2 is locked relative to the case 1; and the protruding portion 311 of the lock tongue 31 is disengaged from the recessed portion 321 of the lock tongue receiving portion 32, so that the battery pack 2 is unlocked relative to the case 1.

[0348] It should be noted that in the present embodiment, one trigger member 33 is understood as one trigger member 33, rather than a group of trigger members 33, and the two unlocking actions are both applied to the same trigger member 33, specifically, the two unlocking actions are applied to the trigger member 33 in sequence.

[0349] As an example, the lock tongue receiving portion 32 comprises a lock slot arranged on the casing 1 or the battery pack housing 201. The lock tongue 31 comprises a protrusion 311, and the lock slot comprises a recess 321 corresponding to the protrusion 311. The protrusion 311 of the lock tongue 31 engages with the recess 321 of the lock slot, so that the battery pack 2 is locked relative to the casing 1. That is, the protrusion 311 extends into the recess 321, so that the battery pack 2 is locked relative to the casing 1 and cannot move. The lock tongue 31 is unlocked from the lock tongue receiving portion 32, that is, the protrusion 311 of the lock tongue 31 is disengaged from the recess 321 of the lock slot, so that the battery pack 2 can move relative to the casing 1.

[0350] As another example, the lock tongue receiving portion 32 comprises a lock slot arranged on the casing 1 or the battery pack housing 201. The lock tongue 31 comprises a plurality of protrusions 311, and the lock slot comprises a plurality of recesses 321 corresponding to the plurality of protrusions 311. It can be understood that the lock tongue 31 can be a one-piece structure, such as a plurality of protrusions 311 extending from a main body, and the plurality of protrusions 311 are synchronously movable with the main body; or the lock tongue 31 can comprise a plurality of separate structures, each of which comprises a protrusion 311, and the plurality of separate structures are synchronously movable with the trigger 33, that is, the plurality of protrusions 311 of the plurality of separate structures are synchronously engaged with or disengaged from the plurality of recesses 321 of the lock slot to lock or unlock the battery pack 2.

[0351] As still another example, the lock tongue receiving portion 32 comprises a lock slot arranged on the casing 1 or the battery pack housing 201. The lock tongue 31 comprises one or more protrusions 311, and the lock slot comprises one or more recesses 321 corresponding to the one or more protrusions 311. The protrusions 311 and the recesses 321 are not one-to-one corresponding. For example, the lock tongue 31 can comprise a plurality of pawls, and the lock slot can comprise a slot corresponding to the plurality of pawls; or the lock tongue 31 can comprise one protrusion 311 engaging with a plurality of lock slots, and the like, which are not listed one by one.

[0352] Further, for the lock tongue 31 comprising one protrusion 311, the trigger 33 can control the battery pack 2 to be unlocked in the following manner: the first unlocking action on the trigger 33 does not move the protrusion 311, and the second unlocking action on the trigger 33 disengages the protrusion 311 from the recess 321; or the first unlocking action on the trigger 33 controls the protrusion 311 to be partially disengaged from the recess 321, and the second unlocking action on the trigger 33 controls the protrusion 311 to be fully disengaged from the recess 321. For the lock tongue 31 comprising a plurality of protrusions 311, the trigger 33 can control the battery pack 2 to be unlocked in the following manner: the plurality of protrusions 311 of the lock tongue 31 are synchronously disengaged from the recesses 321, or the plurality of protrusions 311 of the lock tongue 31 are sequentially disengaged from the recesses 321. Other manners can also be used, which are not listed one by one.

[0353] It should be noted that the trigger 33 is understood to be able to link all the protrusions 311 of the locking tongue 31 to disengage all the recesses 321 of the locking tongue receiving portion 32, so as to achieve unlocking of the battery pack 2. The matching structure of the locking tongue 31 and the locking tongue receiving portion 32 of the present application is not limited to this, and can be any structure that can be controlled by the same trigger 33 to link and control unlocking, which is not limited herein.

[0354] In one embodiment, the trigger 33 is pivotally connected to the casing 1 or the battery pack shell 201 about the second pivot shaft 336; or the trigger 33 is pivotally connected to the locking tongue linkage 34 about the second pivot shaft 336. The first unlocking action is configured to flip the trigger 33 so that it pivots about the second pivot shaft 336 to abut against the locking tongue linkage 34; the second unlocking action is configured to further push the trigger 33, so that the trigger 33 moves and drives the locking tongue linkage 34 to pivot about the first pivot shaft 335, the locking tongue linkage 34 drives the locking tongue 31 to move, until the locking tongue 31 is disengaged from the locking tongue receiving portion 32, so that the battery pack 2 is disengaged from the casing 1.

[0355] As an example, the trigger 33 is pivotally connected to the trigger abutment portion 342 of the locking tongue linkage 34 about the second pivot shaft 336.

[0356] Further, the trigger elastic return member 334 is a torsion spring clamped between the trigger 33 and the casing 1 or the battery pack shell 201.

[0357] The casing 1 or the battery pack shell 201 is provided with a trigger 33 mounting slot 4, the trigger 33 is mounted at the trigger 33 mounting slot 4 and does not protrude from the casing 1 or the battery pack shell 201. Such a structure makes the trigger 33 less likely to be accidentally touched. Further, the trigger 33 mounting slot 4 is provided with a limiting slot wall 41 for limiting the movement range of the trigger 33 and a slot hole 42 for the trigger 33 to extend into the casing 1 or the battery pack shell 201, and an operation gap 43 is left between the end of the trigger 33 for applying the unlocking action and the trigger 33 mounting slot.

[0358] Referring to Figure 12 and Figure 15 In one embodiment, a sliding guide mechanism 5 is provided between the battery pack 2 and the battery pack mounting portion 101, the sliding guide mechanism 5 includes a sliding groove 52 and a sliding rail 51 that guides and cooperates with the sliding groove 52. One of the battery pack 2 and the battery pack mounting portion 101 is provided with the sliding groove 52, and the other is provided with the sliding rail 51 that guides and cooperates with the sliding groove 52, and the battery pack 2 is movably connected to the battery pack mounting portion 101 by the cooperation of the sliding groove 52 and the sliding rail 51.

[0359] It can be understood that the electric power tool of the present application can be a chain saw 100, a grass trimmer, a blower, a brush cutter, etc. that is powered by the battery pack 2. As an example, the electric power tool can be a chain saw 100, and further, the electric power tool can be a tree chain saw 100.

[0360] The tree chain saw 100 is a chain saw 100 used for work on a tree, and the work environment is relatively complex. When the user climbs the tree, the chain saw 100 is hung on the body, and the chain saw 100 will shake during the process of climbing the tree. Therefore, during the process of the user climbing the tree and performing work on the tree, the battery pack 2 unlocking key can touch the branches or the user's body, which can cause the battery pack 2 to be unlocked due to accidental touch, so that the battery pack 2 is abnormally separated from the chain saw 100, causing harm to people or animals around, or causing damage to articles, and there is a great safety hazard.

[0361] With reference to Figures 1 to 3 In the present embodiment, the electric power tool is taken as an example of a tree chain saw 100. The electric power tool includes a machine shell 1, a battery pack 2, and a locking assembly 33. The machine shell 1 is provided with a battery pack mounting portion 101, and the battery pack 2 is detachably attached to the battery pack mounting portion 101. The battery pack 2 is used to provide electric energy to the electric power tool, and the battery pack 2 includes a battery pack shell 201.

[0362] With reference to Figure 4 and Figure 5 The locking assembly 33 includes a locking tongue 31, a locking tongue receiving portion 32, a trigger 33, and a locking tongue elastic return member 36. The locking tongue receiving portion 32 is configured as a locking groove. The locking tongue 31 includes a protruding portion 311, and the locking groove includes a recessed portion 321. The protruding portion 311 of the locking tongue 31 can be engaged with the recessed portion 321 of the locking groove, so as to lock the battery pack 2 relative to the machine shell 1. As an example, the locking tongue 31 and the trigger 33 are movably arranged on the machine shell 1, and the locking groove is arranged on the battery pack shell 201. Specifically, the machine shell 1 is provided with a receiving cavity 102 that can accommodate the locking tongue 31 and the trigger 33, and the receiving cavity 102 has a through hole 1021 through which the locking tongue 31 can extend into the battery pack mounting portion 101. The locking tongue elastic return member 36 acts on the locking tongue 31 to exert a force on the locking tongue 31 in the direction of the locking groove.

[0363] The battery pack 2 and the battery pack mounting portion 101 include a plurality of sets of cooperating surfaces located at different sides of the battery pack 2, and the locking assembly 33 is arranged on one of the sets of cooperating surfaces. As an example, the battery pack mounting portion 101 is an open-top battery pack accommodating chamber. The electric power tool includes a working head, and the side of the battery pack 2 close to the working head of the electric power tool is the front side, and the side of the battery pack 2 away from the working head of the electric power tool is the rear side. As an example, the working head of the chainsaw 100 is the cutting assembly 62 of the chainsaw 100. Specifically, the battery pack mounting portion 101 semi-encapsulates the battery pack 2, the battery pack mounting portion 101 is open at the top, and the battery pack 2 and the battery pack mounting portion 101 include five sets of cooperating surfaces located at the front side, the rear side, the left side, the right side, and the bottom side of the battery pack 2, and the locking assembly 33 is arranged on the set of cooperating surfaces located at the front side of the battery pack 2.

[0364] Referring to Figures 6 to 8 The trigger 33 can act on the locking tongue 31 and link the movement of the locking tongue 31. The trigger 33 includes the trigger 33, a locking tongue linkage 34, and a trigger elastic return member 334. The trigger 33 and the locking tongue linkage 34 are both movably arranged, and the locking tongue linkage 34 can drive the locking tongue 31 to move. Specifically, the locking tongue linkage 34 is pivotally arranged on the housing 1 about a first pivot axis 335. The locking tongue linkage 34 includes a locking tongue abutting portion 341 and a trigger abutting portion 342, and the trigger abutting portion 342 and the locking tongue abutting portion 341 synchronously pivot about the first pivot axis 335. The trigger 33 is pivotally connected to the trigger abutting portion 342 of the locking tongue linkage 34 about a second pivot axis 336, and can move to abut against the trigger abutting portion 342 and drive the trigger abutting portion 342 to pivot about the first pivot axis 335. The locking tongue abutting portion 341 is used to abut against the locking tongue 31 and move with the trigger abutting portion 342 about the first pivot axis 335 to drive the locking tongue 31 to move away from the locking slot. The trigger 33 includes an initial position in a state where no unlocking action is applied to the trigger 33. The trigger elastic return member 334 acts on the trigger 33 to apply a force to the trigger 33 to move the trigger 33 towards the initial position. As an example, the first pivot axis 335 is fixedly arranged on the housing 1, and the trigger elastic return member 334 is a torsion spring clamped between the trigger 33 and the housing 1.

[0365] The locking tongue abutting portion 341 and the trigger abutting portion 342 are located on both sides of a plane that passes through the pivot axis of the first pivot axis 335 and is parallel to the movement direction of the locking tongue 31. Preferably, the angle between the extension direction of the locking tongue abutting portion 341 and the extension direction of the trigger abutting portion 342 is 90°-180°. More preferably, the angle between the extension direction of the locking tongue abutting portion 341 and the extension direction of the trigger abutting portion 342 is 150°-180°.

[0366] Referring to Figure 9The lock tongue abutting portion 341 includes an extension portion 341a extending along the extension direction thereof and an abutting portion 341b connected to the outer end of the extension portion 341a, and the abutting portion 341b has a smooth transition outer profile in the pivoting direction of the lock tongue abutting portion 341. As an example, the lock tongue abutting portion 341 can include two symmetrical abutting portions 341b connected as a whole by the extension portion 341a.

[0367] In this embodiment, the lock tongue linkage 34 includes two separate elements, i.e., an upper linkage 342a and a lower linkage 342b, the trigger abutting portion 342 is formed on the upper linkage 342a, and the lock tongue abutting portion 341 is formed on the lower linkage 342b, and the upper linkage 342a and the lower linkage 342b are synchronously linked in an abutting manner. Specifically, the upper linkage 342a and the lower linkage 342b are respectively pivotally connected to the first pivot shaft 335, the outer edge of the upper linkage 342a is formed with an upper boss 342a1, and the outer edge of the lower linkage 342b is formed with a lower boss 342b1, and the upper boss 342a1 and the lower boss 342b1 abut each other through an abutting surface arranged radially along the first pivot shaft 335 to realize synchronous linkage of the upper linkage 342a and the lower linkage 342b.

[0368] The trigger 33 is configured to control the protrusion 311 of the lock tongue 31 to disengage from the recess 321 of the lock groove based on two unlocking actions applied to the trigger 33, so as to release the lock of the battery pack 2 relative to the case 1. The two unlocking actions include a first unlocking action and a second unlocking action, and the first unlocking action and the second unlocking action are both applied to the trigger 33. The first unlocking action is configured to flip the trigger 33 to pivot about the second pivot shaft 336 to abut the lock tongue linkage 34; the second unlocking action is configured to further push the trigger 33, so that the trigger 33 moves and drives the lock tongue linkage 34 to pivot about the first pivot shaft 335, and the lock tongue linkage 34 drives the lock tongue 31 to move until the protrusion 311 of the lock tongue 31 disengages from the recess 321 of the lock groove. The directions of the forces applied to the trigger 33 corresponding to the first unlocking action and the second unlocking action are different at least in part of the movement stroke. In this embodiment, the direction of the force applied to the trigger 33 corresponding to the first unlocking action is substantially as shown by arrow a in Figure 7 , and the direction of the force applied to the trigger 33 corresponding to the second unlocking action is substantially as shown by arrow b in Figure 8 .

[0369] Referring to Figures 6 to 8The shell 1 is provided with a trigger 33 mounting notch 4, the trigger 33 mounting notch 4 is provided with a limiting groove wall 41 for limiting the movement range of the trigger 33 and a groove hole 42 for the trigger 33 to extend into the shell 1 so that the trigger 33 abuts against the latch linkage 34, and an operation gap 43 is left between the end of the trigger 33 for applying unlocking action and the trigger 33 mounting notch 4. For the convenience of understanding, the end of the trigger 33 for applying unlocking action is defined as the operation end 3311 of the trigger 33, and the end of the trigger 33 abutting against the latch linkage 34 is defined as the trigger end 3312 of the trigger 33. Specifically, the trigger 33 mounting notch 4 is in communication with the inside of the shell 1, that is, in communication with the accommodation cavity 102. In the state that the trigger 33 is not applied with unlocking action, under the action of the torsional spring, the operation end 3311 of the trigger 33 abuts against the limiting groove wall 41 above, and the upper surface of the trigger 33 is basically flush with the surface of the shell 1; when the trigger 33 is applied with unlocking action, the trigger 33 can pivot around the second pivot 336, the trigger end 3312 of the trigger 33 extends into the shell 1 from the groove hole 42 and abuts against the latch linkage 34; the operation end 3311 of the trigger 33 and the trigger 33 mounting notch 4 leave an operation gap for the operator's finger to extend into so as to apply the flip unlocking action to the trigger 33, the limiting groove wall 41 is recessed downward relative to the upper end face of the trigger 33 mounting notch 4, and the operation gap 43 for the operator's finger to extend into is formed between the operation end 3311 of the trigger 33 and the limiting groove wall 41 and the trigger 33 mounting notch 4. The operator's finger can extend into the lower part of the trigger 33 from the operation gap 43 in front of the operation end 3311 of the trigger 33, and it is easier to flip up the trigger 33.

[0370] Referring to Figure 10 The latch 31 is provided with an embedded groove 314 for the latch abutting part 341 of the latch linkage 34 to extend into so as to limit the pivot direction of the latch abutting part 341, and a reset part mounting part 313, one end of the latch elastic reset part 36 is attached to the reset part mounting part 313, and the other end abuts against the shell 1. The latch abutting part 341 of the latch linkage 34 includes two abutting parts 341b. The reset part mounting part 313 is at least partially arranged in the embedded groove 314, the embedded groove 314 is open at the middle of the side wall away from the convex part 311 for the latch elastic reset part 36 to extend out, and two blocking walls 312 are formed on both sides of the side wall for abutting against the two abutting parts 341b of the latch linkage 34 respectively. Specifically, the latch elastic reset part 36 is a spring, and the reset part mounting part 313 is a column body fixed in the embedded groove 314 and gradually narrowed at the head part, so that the one end of the spring can be sleeved and clamped on the front end of the column body, and the cross section of the column body is cross-shaped. The shell 1 is provided with a spring limiting groove 103 at the corresponding position to limit the other end of the spring.

[0371] As an example, the longitudinal section of the recess 321 of the lock groove is a trumpet shape that gradually narrows from the outside to the inside. The outer part of the longitudinal section of the protrusion 311 of the latch 31 gradually narrows along the direction close to the lock groove. This structure is beneficial for the alignment of the latch 31 with the lock groove and requires less precision in the direction of movement of the latch 31. The protrusion 311 of the latch 31 is surrounded by a limiting surface that abuts against the outer end face of the recess 321 of the lock groove, so that the latch 31 and the lock groove can be stably engaged, which can reduce the relative movement between the battery pack 2 and the housing 1.

[0372] A sliding guide mechanism 5 is provided between the battery pack 2 and the battery pack mounting part 101. The sliding guide mechanism 5 includes a groove 52 and a slide rail 51 that guides and cooperates with the groove 52. The battery pack mounting part 101 is provided with the groove 52, and the battery pack 2 is provided with the slide rail 51 that guides and cooperates with the groove 52. The battery pack 2 is guided and moved to the battery pack mounting part 101 through the cooperation of the slide rail 51 and the groove 52, realizing mutual guiding and limiting between the battery pack 2 and the battery pack mounting part 101. As an example, the battery pack mounting part 101 has an opening at the top, and the battery pack 2 is inserted into the battery pack mounting part 101 longitudinally from top to bottom.

[0373] Specifically, as described above, the power tool includes a working head, with the side of the battery pack 2 closest to the working head of the power tool designated as the front side, and the side of the battery pack 2 furthest from the working head of the power tool designated as the rear side. The battery pack mounting portion 101 has an opening at the top, and there are five sets of mating surfaces between the battery pack 2 and the battery pack mounting portion 101, located on the front, rear, left, right, and bottom sides of the battery pack 2. The slide groove 52 and the slide rail 51 are disposed on one set of mating surfaces located on the front side of the battery pack 2. Furthermore, a locking assembly 33 is disposed on the mating surface between the slide rail 51 and the slide groove 52.

[0374] In this embodiment of the power tool, when the user installs the battery pack 2, the slide rail 51 is aligned with the slide groove 52, and the battery pack 2 is inserted into the battery pack mounting part 101. When the battery pack 2 is inserted into place, the locking tongue 31 can engage with the locking groove on the battery pack 2 under the action of the locking tongue elastic reset member 36. That is, the protrusion 311 of the locking tongue 31 extends into the recess 321 of the locking groove, so that the battery pack 2 is locked relative to the housing 1.

[0375] When a user needs to disassemble battery pack 2, battery pack 2 must first be unlocked, which includes the following steps:

[0376] Step 1.1, the first unlocking action, involves trigger 33 being in its initial position without external force. Figure 6 In the indicated state, the user applies an upward rotating force to the operating end 3311 of the trigger 33, causing the trigger 33 to pivot around the second pivot 336 until its trigger end 3312 abuts against the trigger abutment portion 342 of the latch linkage 34. Figure 7The state shown;

[0377] Step 1.2, i.e. the second unlocking action, further pushes the operation end 3311 of the trigger 33 of the trigger 33, and the trigger end 3312 of the trigger 33 moves synchronously with the operation end 3311 of the trigger 33, which drives the trigger abutting portion 342 of the lock tongue linkage 34 to pivot around the first pivot 335, and in turn drives the lock tongue abutting portion 341 of the lock tongue linkage 34 to pivot synchronously around the first pivot 335, which pushes the lock tongue 31 abutting therewith to move, until the convex portion 311 of the lock tongue 31 is disengaged from the concave portion 321 of the lock slot, i.e. Figure 8 The state shown, at which the battery pack 2 is unlocked relative to the tool case 1, and the battery pack 2 can be separated from the power tool.

[0378] Step 1.3, after the battery pack 2 is separated from the power tool, the user releases the trigger 33, such as releasing the finger, and does not apply any force to the trigger 33, at which time the lock tongue 31 is reset under the action of the lock tongue elastic reset member 36, and the trigger 33 is reset under the action of the torsional spring, so that the locking assembly 33 returns to the initial state.

[0379] It can be understood that in the second unlocking action, the pushing action applied to the trigger 33 can also be a pulling action or other action that has the same effect, which will not be described here.

[0380] The power tool of the embodiment, the user can only unlock the battery pack 2 by applying two unlocking actions of flipping and pushing to the trigger 33, and general branches cannot unlock the battery pack 2, which can effectively reduce the risk of unlocking the battery pack 2 due to accidental touch, avoid hurting people or objects around the work environment, and effectively reduce the security risk.

[0381] In another embodiment, referring to Figures 11 to 16 , the trigger 33 is movably arranged along the first direction by the guide structure 337. The first unlocking action is configured to press the trigger 33 to move along the first direction to abut against the lock tongue linkage 34; and the second unlocking action is configured to push the trigger 33 along the second direction, so that the trigger 33 moves and drives the lock tongue linkage 34 to pivot around the first pivot 335, the lock tongue linkage 34 drives the lock tongue 31 to move, until the lock tongue 31 is disengaged from the lock tongue receiving portion 32, so that the battery pack 2 is unlocked relative to the tool case 1.

[0382] Further, referring to Figures 20 to 22The guide structure 337 comprises a guide block 3371 pivotally arranged about the first pivot 335 and a guide groove 3372 arranged on the trigger 33 and cooperated with the guide block 3371. At this time, the first unlocking action is configured to press the trigger 33 to move in the first direction to abut against the latch link 34; the second unlocking action is configured to push the trigger 33 in the second direction, so that the trigger 33 performs a pivoting movement about the first pivot 335 with the guide block 3371, and drives the latch link 34 to pivot about the first pivot 335, and the latch link 34 drives the latch 31 to move until the latch 31 is disengaged from the latch receiving portion 32, so that the battery pack 2 is unlocked relative to the casing 1.

[0383] The trigger elastic return member 334 is a spring arranged between the guide block 3371 and the guide groove 3372.

[0384] With reference to Figures 17 to 19 The casing 1 or the battery pack shell 201 is provided with a trigger 33 mounting slot 4, and a limiting wall 44 is arranged at the trigger 33 mounting slot 4. The trigger 33 is provided with a stop surface 3313 cooperated with the limiting wall 44, and the limiting wall 44 is used to stop the stop surface 3313, so that the trigger 33 moves in the first direction before disengaging the stop of the limiting wall 44 and cannot move in the second direction.

[0385] The casing 1 or the battery pack shell 201 is further provided with a guide wall 45, which is used to guide the trigger 33 to move in the second direction. As an example, the guide wall 45 extends substantially in the second direction. The guide wall 45 can guide the trigger 33 to a certain extent, so that the user is more likely to find the force angle matching the second direction, and the battery pack 2 unlocking action is easier to operate.

[0386] With reference to Figure 23 The trigger 33 comprises a pressing surface 3314 arranged substantially perpendicular to the first direction and a pushing surface 3315 arranged substantially perpendicular to the second direction.

[0387] With reference to Figures 11 to 14 In this embodiment, the electric tool is taken as a chain saw 100 on a tree as an example. The electric tool comprises a casing 1, a battery pack 2 and a locking assembly 33. The casing 1 is provided with a battery pack mounting portion 101, and the battery pack 2 is detachably attached to the battery pack mounting portion 101. The battery pack 2 is used to provide electric energy to the electric tool, and the battery pack 2 comprises a battery pack shell 201.

[0388] With reference to Figure 15 and Figure 16The locking assembly 33 comprises a locking tongue 31, a locking tongue receiving portion 32, a trigger 33 and a locking tongue elastic return member 36. The locking tongue receiving portion 32 is configured as a locking slot. The locking tongue 31 comprises a protruding portion 311, and the locking slot comprises a recessed portion 321. The protruding portion 311 of the locking tongue 31 is capable of engaging with the recessed portion 321 of the locking slot, so as to lock the battery pack 2 relative to the housing 1. As an example, the locking tongue 31 and the trigger 33 are movably arranged on the housing 1, and the locking slot is arranged on the battery pack housing 2012. Specifically, the housing 1 is provided with a receiving cavity 102 capable of accommodating the locking tongue 31 and the trigger 33, and the receiving cavity 102 has a through hole 1021 through which the locking tongue 31 can extend into the battery pack mounting portion 101. The locking tongue elastic return member 36 acts on the locking tongue 31 to apply a force to the locking tongue 313 in the direction of the locking slot.

[0389] The battery pack 2 and the battery pack mounting portion 101 comprise a plurality of sets of cooperating surfaces located at different sides of the battery pack 2, and the locking assembly 33 is arranged on one of the sets of cooperating surfaces. As an example, the battery pack mounting portion 101 is an upper-opened battery pack accommodating chamber. The electric power tool comprises a working head, and the working head of the chain saw 100 is the cutting assembly 62. The side of the battery pack 2 close to the working head of the electric power tool is the front side, and the side of the battery pack 2 away from the working head of the electric power tool is the rear side. The battery pack mounting portion 101 semi-encapsulates the battery pack 2. Specifically, the battery pack mounting portion 101 is upper-opened, the battery pack 2 and the battery pack mounting portion 101 comprise five sets of cooperating surfaces located at the front side, the rear side, the left side, the right side and the bottom side of the battery pack 2, and the locking assembly 33 is arranged on the set of cooperating surfaces located at the front side of the battery pack 2.

[0390] Referring to Figures 17 to 19 The trigger 33 can act on the locking tongue 31 and drive the locking tongue 31 to move. The trigger 33 comprises the trigger 33, a locking tongue linkage 34 and a trigger elastic return member 334. The trigger 33 and the locking tongue linkage 34 are movably arranged, and the locking tongue linkage 34 can drive the locking tongue 31 to move. Further, the locking tongue linkage 34 is pivotally arranged on the housing 1 about a first pivot 335. The locking tongue linkage 34 comprises a locking tongue abutting portion 341 and a trigger abutting portion 342, and the trigger abutting portion 342 and the locking tongue abutting portion 341 pivot synchronously about the first pivot 335. Specifically, the locking tongue linkage 34 has a through shaft hole 343 through which the first pivot 335 passes, and the locking tongue linkage 34 is pivotally arranged on the first pivot 335 through the through shaft hole 343.

[0391] Referring to Figures 20 to 22The trigger piece 33 is guided to move in the first direction by the guide structure 337, and can be moved to abut against the trigger piece abutting portion 342 and drive the trigger piece abutting portion 342 to pivot about the first pivot 335. The lock tongue abutting portion 341 is used to abut against the lock tongue 31 and pivot about the first pivot 335 with the trigger piece abutting portion 342, thereby driving the lock tongue 31 to move away from the lock slot. The trigger piece 33 includes an initial position in a state where no unlocking action is applied thereto. The trigger piece elastic return member 334 acts on the trigger piece 33 to apply a force to the trigger piece 33 to move it towards the initial position. As an example, the first pivot 335 is fixedly arranged on the casing 1. The guide structure 337 includes a guide block 3371 pivotally arranged about the first pivot 335 and a guide groove 3372 arranged on the trigger piece 33 and cooperating with the guide block 3371. The trigger piece elastic return member 334 is a spring arranged between the guide block 3371 and the guide groove 3372.

[0392] Specifically, the guide structure 337 is a straight guide structure 337. The guide block 3371 includes a plurality of guide portions 3371a, and a space for accommodating the trigger piece elastic return member 334 is formed between the plurality of guide portions 3371a. The lower end of the trigger piece 33 is formed with the guide groove 3372 cooperating with the plurality of guide portions 3371a of the guide block 3371. A space for accommodating the trigger piece elastic return member 334 is formed in the middle of the guide groove 3372, and a spring mounting seat 3372a for mounting the trigger piece elastic return member 334 is arranged. The guide block 3371 is further provided with a guide boss 3371b for abutting against the lower end surface of the trigger piece 33 to limit the guide movement stroke of the trigger piece 33.

[0393] The lock tongue abutting portion 341 and the trigger piece abutting portion 342 are located on two sides of a plane that passes through the pivot axis of the first pivot 335 and is parallel to the movement direction of the lock tongue 31. Preferably, the angle between the extension direction of the lock tongue abutting portion 341 and the extension direction of the trigger piece abutting portion 342 is 90°-180°. More preferably, the angle between the extension direction of the lock tongue abutting portion 341 and the extension direction of the trigger piece abutting portion 342 is 150°-180°.

[0394] The lock tongue abutting portion 341 includes an extension portion 341a arranged substantially along the extension direction thereof and an abutting portion 341b connected to the outer end of the extension portion 341a. The abutting portion 341b has a smooth transition outer contour in the pivoting direction of the lock tongue abutting portion 341. As an example, the lock tongue abutting portion 341 can include two symmetrical abutting portions 341b connected as a whole by the extension portion 341a.

[0395] In this embodiment, the lock tongue linkage member 34 is of an integral structure, and the lock tongue abutting portion 341 and the trigger abutting portion 342 are formed on the integral structure in different directions.

[0396] The trigger 33 is configured to control the convex portion 311 of the lock tongue 31 to disengage from the concave portion 321 of the lock slot based on two unlocking actions applied to the trigger 33, so as to release the battery pack 2 from the shell 1. The two unlocking actions include a first unlocking action and a second unlocking action, and the first unlocking action and the second unlocking action are both applied to the trigger 33. The first unlocking action is configured to press the trigger 33 to move in a first direction to abut against the lock tongue linkage member 34; the second unlocking action is configured to push the trigger 33 in a second direction, so that the trigger 33 is pivoted about the first pivot 335, and the lock tongue linkage member 34 is pivoted about the first pivot 335 to disengage the convex portion 311 of the lock tongue 31 from the concave portion 321 of the lock slot, so as to release the battery pack 2 from the shell 1. In this embodiment, the first direction is as shown by arrow c in Figure 18 , and the second direction is as shown by arrow d in Figure 19 .

[0397] The shell 1 is provided with a trigger 33 mounting slot 4, the trigger 33 is mounted at the trigger 33 mounting slot 4, and the trigger 33 mounting slot 4 is provided with a limiting wall 41. The trigger 33 is provided with a stop surface 3313 matched with the limiting wall 41, and the limiting wall 44 is used to stop the stop surface 3313, so that the trigger 33 can only move in the first direction and cannot move in the second direction before disengaging the stop of the limiting wall 44. Specifically, the trigger 33 mounting slot 4 is connected with the inside of the shell 1, that is, connected with the accommodation cavity 102. The slot wall of the trigger 33 mounting slot 4 forms the guide wall 44, and the guide wall 44 extends in the first direction to guide and limit the trigger 33. The shell 1 is also provided with a guide wall 44 extending in the second direction, which is used to guide the trigger 33 to move in the second direction. The upper edge of the guide wall 44 is connected with the lower edge of the limiting wall 44.

[0398] Referring to Figure 23The trigger 33 includes a pressing surface 3314 generally perpendicular to a first direction and a pushing surface 3315 generally perpendicular to a second direction. The pushing surface 3315 has anti-slip textures 3316. Specifically, the upper surface of the trigger 33 has a groove, the bottom wall of which forms the pressing surface 3314, and one side wall of which forms the pushing surface 3315. The pressing surface 3314 is generally perpendicular to the first direction, which facilitates the user applying a force to the trigger 33 to move it along the first direction. The pushing surface 3315 is generally perpendicular to the second direction, which facilitates the user applying a force to the trigger 33 to move it along the second direction. This makes it easier for the user to find the appropriate force angle that matches the first and second unlocking actions, making the unlocking action of the battery pack 2 easier to operate.

[0399] The specific structures of the locking tongue 31 and the locking groove, as well as the guiding and electrical connection structures between the battery pack 2 and the battery pack mounting part 101, can be referred to the aforementioned embodiments and will not be repeated here.

[0400] In this embodiment of the power tool, when the user installs the battery pack 2, the slide rail 51 is aligned with the slide groove 52, and the battery pack 2 is inserted into the battery pack mounting part 101. When the battery pack 2 is inserted into place, the locking tongue 31 can engage with the locking groove on the battery pack 2 under the action of the locking tongue elastic reset member 36. That is, the protrusion 311 of the locking tongue 31 extends into the recess 321 of the locking groove, so that the battery pack 2 is locked relative to the housing 1.

[0401] When a user needs to disassemble battery pack 2, battery pack 2 must first be unlocked, which includes the following steps:

[0402] Step 2.1, the first unlocking action, involves trigger 33 being in its initial position without external force. Figure 17 In the indicated state, the user presses the pressing surface 3314 of the trigger 33 roughly in the first direction, causing the trigger 33 to move in the first direction until it abuts against the guide boss 3371b of the guide block 3371. At this time, the trigger 3371 disengages from the stop of the limiting wall 44 and abuts against the trigger abutment part 342 of the latch linkage 34, i.e. Figure 18 The state shown;

[0403] Step 2.2, the second unlocking action, involves the user pushing the pressing surface 3315 of the trigger 33 roughly in the second direction, causing the trigger 33 to pivot around the first pivot 335. This pivots the latch linkage 34 around the first pivot 335 until the protrusion 311 of the latch 31 disengages from the recess 321 of the lock groove. Figure 19 As shown in the diagram, the battery pack 2 is now unlocked relative to the housing 1, allowing the battery pack 2 to be separated from the power tool.

[0404] Step 2.3. After the battery pack 2 is separated from the electric tool, the user releases the trigger 33, such as releasing the finger, and does not apply any force to the trigger 33. At this time, the locking tongue 31 is reset under the action of the locking tongue elastic reset member 36, and the trigger 33 is reset under the action of the trigger elastic reset member 334, so that the locking assembly 33 returns to the initial state.

[0405] The user can only unlock the battery pack 2 by applying two unlocking actions of pressing and pushing the trigger 33. The general branch touch cannot unlock the battery pack 2, which can effectively reduce the risk of unlocking the battery pack 2 due to accidental touch, avoid hurting people or objects around the working environment, and effectively reduce the safety hazard.

[0406] Reference Figure 1 and Figure 12 The chain saw 100 in the foregoing embodiment includes a machine body 61, a cutting assembly 62, a top handle 63 (also referred to as a main handle), and a battery pack mounting portion 101. The cutting assembly 62 is arranged at the front side of the machine body 61, the battery pack mounting portion 101 is arranged at the rear side of the machine body 61, and the top handle 63 is arranged at the upper side of the machine body 61 and located at the front side of the battery pack mounting portion 101. The top handle 63 includes a top handle shell 631, which is part of the foregoing machine shell 1, and the locking assembly 33 is at least partially arranged in the top handle shell 631. As an example, a driving motor (not shown) is arranged in the machine body 61, the driving motor is powered by the battery pack 2, and the driving motor drives the cutting assembly 62 to operate through a transmission assembly 64, the transmission assembly 64 includes a guide plate 641 and a chain wheel (not shown), and the cutting assembly 62 includes a saw chain 621 arranged between the guide plate 641 and the chain wheel. The driving motor directly or indirectly drives the chain wheel to rotate, drives the saw chain 621 to reciprocate along the guide plate 641, and realizes the cutting function. The foregoing machine shell 1 at least includes a shell of the machine body 61 portion, a shell of the top handle 63 portion, and the battery pack mounting portion 101. The trigger 33 of the locking assembly 33 is arranged at the upper side of the top handle shell 631.

[0407] The chain saw 100 further includes a trigger 66 for controlling the operation of the driving motor. The trigger 66 is arranged at the upper side or the lower side of the top handle shell 631. The trigger 33 and the trigger 66 are arranged at the same side or the opposite side of the top handle shell 631, which facilitates the user to operate.

[0408] The chain saw 100 further includes an auxiliary handle 65, which is connected to the machine body 61 at one end and connected to the top handle 63 at the other end, and located at the side of the machine body 61. Preferably, the auxiliary handle 65 is located at the left side of the machine body 61.

[0409] The top handle 63 of the chain saw 100 is arranged at the front side of the battery pack 2, so that the chain saw 100 is smaller in size and more compact in structure, and is used in cooperation with the auxiliary handle 65 arranged at the side of the machine body 61, facilitating the operator to operate the chain saw in a narrow space, and especially suitable for use in complex operating environments such as tree operations.

[0410] It can be understood that, in other embodiments, the locking assembly 33 can also be configured such that the locking tongue linkage 34 is fixedly connected with the locking tongue 31. As an example, the trigger 33 is configured to not abut against the locking tongue linkage 34 in the initial state. The first unlocking action is configured to apply a force to the trigger 33 in the third direction, to control the trigger 33 to move to abut against the locking tongue linkage 34, and the second unlocking action is configured to apply a force to the trigger 33 in the fourth direction, to drive the trigger 33 to move the locking tongue linkage 34, and in turn drive the locking tongue 31 to disengage from the locking tongue receiving portion 32. The third direction and the fourth direction are different directions. For the specific implementation of the locking assembly 3 in this embodiment, no longer be described here.

[0411] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0412] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

[0413] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0414] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and are not used to denote or imply relative importance or a number of indications of the technical features indicated. Thus, the technical features defined with "first", "second", etc. can explicitly or implicitly include at least one of the technical features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0415] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0416] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0417] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes, and do not represent the only embodiment.

Claims

1. A power tool, comprising: a housing provided with a battery pack mounting portion, the battery pack mounting portion being detachably connected with a battery pack, the battery pack mounting portion being provided for the battery pack to be insertedly connected, the battery pack being configured to provide electric energy for the power tool; a locking assembly including a locking tongue, a locking tongue receiving portion and a trigger, the trigger being capable of moving the locking tongue relative to the locking tongue receiving portion; characterized in that the locking tongue receiving portion includes a first receiving portion and a second receiving portion arranged in front of and behind in the insertion direction of the battery pack; the locking tongue is engaged with at least one of the first receiving portion and the second receiving portion to lock the battery pack relative to the housing, and the locking tongue is disengaged from the first receiving portion and the second receiving portion to unlock the battery pack relative to the housing; the locking tongue and the trigger are movably arranged on one of the housing and the battery pack, and the locking tongue receiving portion is arranged on the other one of the housing and the battery pack.

2. The power tool of claim 1, wherein, the battery pack includes a battery pack housing extending along three orthogonal spatial directions (x, y, z) in the directions of a width axis W, a thickness axis T and a height axis H of the battery pack housing; the battery pack includes a battery pack thickness midpoint in the thickness axis direction, and the trigger and the locking tongue are located on the same side of a plane perpendicular to the thickness axis and passing through the battery pack thickness midpoint; or the battery pack includes a battery pack width midpoint in the width axis direction, and the trigger and the locking tongue are located on the same side of a plane perpendicular to the width axis and passing through the battery pack width midpoint.

3. The power tool of claim 1, wherein, the battery pack includes a battery pack housing, the battery pack housing including a first outer profile surface and a second outer profile surface arranged at intervals, the first outer profile surface and the second outer profile surface being oppositely arranged in a direction perpendicular to the insertion direction of the battery pack, at least part of the locking tongue or the locking tongue receiving portion being arranged on the first outer profile surface, and the trigger and the locking tongue being located on one side of the second outer profile surface.

4. The power tool of any one of claims 1 to 3, wherein, the power tool is configured to move the locking tongue by a first stroke and a second stroke based on external force applied to the trigger; the locking tongue moves the first stroke to disengage the locking tongue from the first receiving portion, and the battery pack is not unlocked relative to the housing; the locking tongue moves the second stroke to disengage the locking tongue from the second receiving portion, and the battery pack is unlocked relative to the housing.

5. The power tool of any one of claims 1 to 3, wherein, the locking assembly includes only one locking tongue; the locking tongue is engaged with the first receiving portion to lock the battery pack relative to the housing at a first position, and the locking tongue is engaged with the second receiving portion to lock the battery pack relative to the housing at a second position.

6. The power tool of claim 5, wherein, the battery pack forms an electrical connection with the power tool only when the locking tongue is engaged with the first receiving portion.

7. The power tool of claim 4, wherein, the locking tongue is moved by the first stroke and the second stroke in sequence based on external force applied to the trigger.

8. The power tool of claim 7, wherein, The number of the trigger is only one, and the one trigger drives the locking tongue to move the first stroke or the second stroke.

9. The power tool of any one of claims 1 to 3, wherein, The locking tongue and the trigger are movably arranged on the housing, and the first receiving part and the second receiving part are arranged on the battery pack.

10. The power tool of claim 3, wherein, The electric tool is a chain saw, and the chain saw further comprises: a cutting assembly mounted on the housing, the cutting assembly comprising a guide plate and a saw chain arranged around the guide plate, the guide plate providing support and guidance for the saw chain; and In a first direction perpendicular to a plane in which the guide plate is arranged, the first outer profile surface and the second outer profile surface of the battery pack are spaced apart and arranged oppositely, and the battery pack is inserted and mounted to the battery pack mounting portion in this way, at least part of the locking tongue or the locking tongue receiving portion is arranged on the first outer profile surface, and one trigger or a plurality of triggers are arranged on one side of the second outer profile surface, or In a second direction parallel to the plane in which the guide plate is arranged, the first outer profile surface and the second outer profile surface of the battery pack are spaced apart and arranged oppositely, and the battery pack is inserted and mounted to the battery pack mounting portion in this way, at least part of the locking tongue or the locking tongue receiving portion is arranged on the first outer profile surface, and one trigger or a plurality of triggers are arranged on one side of the second outer profile surface.

11. The power tool of claim 1, wherein, The electric tool is a chain saw, and the chain saw further comprises: a cutting assembly mounted on the housing, the cutting assembly comprising a guide plate and a saw chain arranged around the guide plate, the guide plate providing support and guidance for the saw chain; and The chain saw further comprises a top handle for a user to hold; the cutting assembly is arranged on the front side of the housing in the length extension direction of the chain saw; the battery pack mounting portion is arranged on the rear side of the housing in the length extension direction of the chain saw; and the top handle is arranged above the housing in the height extension direction of the chain saw.

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