Electric tool

Abstract

The invention relates to an electric tool which comprises a machine shell provided with a battery pack installation part, and the battery pack installation part can allow a battery pack to be inserted and connected; the locking assembly comprises a spring bolt, a spring bolt receiving part and a triggering piece; the spring bolt and the triggering piece are movably arranged on one of the machine shell and the battery pack, and the spring bolt receiving part is arranged on the other one of the machine shell and the battery pack; the locking assembly further comprises a spring bolt linkage piece, the trigger piece generates at least two different actions under the action of external force, and one action generated by the trigger piece is that the trigger piece moves to the position abutting against the spring bolt linkage piece, and the other action is that the trigger piece moves to the position abutting against the spring bolt linkage piece. And the other action generated by the trigger piece is that the trigger piece continues to move and drives the spring bolt linkage piece to move, and the spring bolt linkage piece drives the spring bolt to move until the spring bolt is driven to be separated from the spring bolt receiving part, so that the battery pack is unlocked relative to the machine shell.

Description

[0001] This application is a divisional application of Chinese invention patent application filed by the applicant on October 21, 2024, entitled "An electric tool and a method for unlocking a battery pack coupled with the electric tool", with application number CN202411471332.8. Technical Field

[0002] This invention relates to a power tool. Background Technology

[0003] Compared to fuel-powered tools, power tools are more environmentally friendly and cleaner, and produce relatively less noise. Therefore, power tools are increasingly favored by power tool users. Power tools are powered by battery packs, which often have short battery life. Therefore, to improve work efficiency, battery packs are usually designed to be detachable from the power tool for easy replacement when the battery is low.

[0004] Power tools typically include a battery pack mounting section, where the battery pack is detachably installed. To prevent the battery pack from detaching from the power tool and causing injury to nearby people or animals, or damage to property, posing a significant safety hazard during use, related technologies incorporate an interlocking mechanism between the battery pack and the power tool's housing. This interlocking mechanism is typically unlocked by applying an unlocking action to the battery pack's unlock button. Summary of the Invention

[0005] Therefore, it is necessary to provide a power tool that can at least prevent the battery pack from being accidentally unlocked, reduce the risk of the battery pack detaching from the power tool abnormally, and improve the safety of using the power tool.

[0006] This invention provides an electric tool, comprising: a housing having a battery pack mounting portion detachably connected to a battery pack, the battery pack being configured to provide power to the electric tool; a locking assembly including a latch, a latch receiving portion, and a trigger; the latch and the trigger are movably disposed on one of the housing and the battery pack, the latch receiving portion being disposed on the other of the housing and the battery pack; the latch engages with the latch receiving portion to lock the battery pack relative to the housing; the latch disengages from the latch receiving portion to unlock the battery pack relative to the housing; the electric tool is configured such that an external force is applied to the trigger, the trigger generating at least two different actions to directly or indirectly move the latch relative to the latch receiving portion, and the number of triggers is configured to be one or more; in a direction perpendicular to the insertion direction of the battery pack, one or more triggers are configured to be located on one side of the battery pack.

[0007] This invention provides a power tool, comprising: a housing having a battery pack mounting portion detachably connected to a battery pack, the battery pack being configured to provide power to the power tool; a locking assembly including a latch, a latch receiving portion, and a trigger; the latch and the trigger are movably disposed on one of the housing and the battery pack, the latch receiving portion being disposed on the other of the housing and the battery pack; the latch engages with the latch receiving portion to lock the battery pack relative to the housing; the latch disengages from the latch receiving portion to unlock the battery pack relative to the housing; the power tool is configured such that an external force is applied to the trigger, the trigger generating at least two different actions to directly or indirectly move the latch relative to the latch receiving portion, the number of triggers being configured to be one or more; the battery pack includes a battery pack housing along three orthogonal spatial directions (x, y, z). Extending along the width axis W, thickness axis T, and height axis H of the battery pack housing, the battery pack housing 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 of the triggers are located on one side of a plane perpendicular to the thickness axis and passing through the midpoint of the thickness; or one or more of the triggers are located on one side of a plane perpendicular to the width axis and passing through the midpoint of the width.

[0008] This invention provides an electric tool, comprising: a housing with a battery pack mounting portion for inserting and connecting a battery pack, the battery pack being configured to provide power to the electric tool; and a locking assembly including a latch, a latch receiving portion, and a trigger; the latch and the trigger are movably disposed on one of the housing and the battery pack, and the latch receiving portion is disposed on the other of the housing and the battery pack; the latch engages with the latch receiving portion to lock the battery pack relative to the housing; the latch disengages from the latch receiving portion to unlock the battery pack relative to the housing; the electric tool is equipped with... The trigger is positioned such that an external force is applied to the trigger, and the trigger generates at least two different actions to directly or indirectly drive the bolt to move relative to the bolt receiving portion. The number of triggers is configured to be one or more. The battery pack includes a battery pack housing, which includes a first outer contour surface and a second outer contour surface. The first outer contour surface and the second outer contour surface are disposed opposite each other in a direction perpendicular to the insertion direction of the battery pack. At least a portion of the bolt or the bolt receiving portion is disposed on the first outer contour surface. One or more triggers are located on one side of the second outer contour surface.

[0009] This invention provides a power tool, including a housing with a battery pack mounting portion for inserting and connecting a battery pack, the battery pack being configured to provide power to the power tool; a locking assembly including a latch, a latch receiving portion, and a trigger; the latch and the trigger are movably disposed on one of the housing and the battery pack, the latch receiving portion being disposed on the other of the housing and the battery pack; the latch engages with the latch receiving portion to lock the battery pack relative to the housing; the latch disengages from the latch receiving portion to unlock the battery pack relative to the housing; only one trigger is provided, the power tool is configured such that an external force is applied to the trigger, and the trigger generates at least two different actions to directly or indirectly move the latch relative to the latch receiving portion.

[0010] In one embodiment, the at least two different actions include one action generated by the trigger, which causes the trigger to move while the battery pack remains locked relative to the housing; and another action generated by the trigger, which causes the trigger to move and move the latch to unlock the battery pack relative to the housing.

[0011] In one embodiment, one action generated by the trigger realizes a first travel trajectory of the trigger; another action generated by the trigger realizes a second travel trajectory of the trigger that is different from the first travel trajectory; the first travel trajectory and the second travel trajectory of the trigger are not on the same straight line, or the first travel trajectory and the second travel trajectory of the trigger move in different directions.

[0012] In one embodiment, one action of the trigger realizes a first travel trajectory of the trigger; another action of the trigger realizes a second travel trajectory of the trigger, different from the first travel trajectory; the power tool is configured to unlock the battery pack relative to the housing based at least on the first travel trajectory and the second travel trajectory.

[0013] In one embodiment, there is only one trigger, and the first travel trajectory and the second travel trajectory are generated by the sequential movement of the same trigger; or the number of triggers is configured to be at least two, and the first travel trajectory and the second travel trajectory are generated by the movement of different triggers.

[0014] In one embodiment, the at least two different actions include one action generated by the trigger, which causes the trigger to move while the bolt does not move; and another action generated by the trigger, which causes the trigger to move and move the bolt to disengage from the bolt receiving part.

[0015] In one embodiment, there is only one trigger, and an action generated by the trigger moves the trigger without unlocking the battery pack relative to the housing; and another action generated by the trigger moves the trigger and drives the latch to move away from the latch receiving part.

[0016] In one embodiment, there is only one trigger, and the at least two different actions are sequentially generated on the same trigger. In one embodiment, the locking assembly further includes a latch linkage, wherein one action generated by the trigger positions the latch in a position allowing movement; another action generated by the trigger moves the latch linkage and causes the latch to move relative to the latch receiving portion. In one embodiment, the trigger further includes a first trigger and a suppressor for locking the first trigger, the suppressor having a first position and a second position that moves relative to the housing; in the first position, the suppressor prevents the first trigger from moving the latch; in the second position, the first trigger can move the latch.

[0017] In one embodiment, one action generated by the trigger is configured as the motion trajectory generated by the suppressor, and another action generated by the trigger is configured as the motion trajectory generated by the first trigger; the motion trajectory generated by the suppressor moves the suppressor from the first position to the second position, allowing the first trigger to drive the bolt to move; the motion trajectory generated by the first trigger drives the bolt to disengage from the bolt receiving portion. In one embodiment, the trigger includes a first trigger and a second trigger, and the bolt includes a first bolt and a second bolt that move independently; the first trigger is configured to drive the first bolt to move, and the second trigger is configured to drive the second bolt to move.

[0018] In one embodiment, the first trigger and the second trigger are independent of each other.

[0019] In one embodiment, an action generated by the first trigger is configured as a motion trajectory generated by the first trigger, thereby enabling the first trigger to disengage the first bolt from the bolt receiving part; and another action generated by the second trigger is configured as a motion trajectory generated by the second trigger, thereby enabling the second trigger to disengage the second bolt from the bolt receiving part.

[0020] In one embodiment, the trigger includes a first trigger and a second trigger, and there is only one latch. The locking assembly further includes a first actuator and a second actuator that move independently. The first actuator and the second actuator each have a locked position and an unlocked position. The first trigger is configured to drive the first actuator to move between the locked position and the unlocked position, and the second trigger is configured to drive the second actuator to move between the locked position and the unlocked position. When at least one of the first actuator and the second actuator is in the locked position, the latch engages with the latch receiving portion. When both the first actuator and the second actuator are in the unlocked position, the latch disengages from the latch receiving portion.

[0021] In one embodiment, one action generated by the trigger is configured as the movement of the first trigger to move the first moving member to the unlock position; the other action generated by the trigger is configured as the movement of the second trigger to move the second moving member to the unlock position.

[0022] In one embodiment, all of the triggers and all of the latches are located on one side of a plane perpendicular to the thickness axis and passing through the midpoint of the thickness; or all of the triggers and all of the latches are located on one side of a plane perpendicular to the width axis and passing through the midpoint of the width.

[0023] In one embodiment, all the triggers, all the latches, and all the latch receiving portions are located on one side of a plane perpendicular to the thickness axis and passing through the midpoint of the thickness; or all the triggers, all the latches, and all the latch receiving portions are located on one side of a plane perpendicular to the width axis and passing through the midpoint of the width. In one embodiment, all the triggers and all the latches are located on one side of the second outer contour surface. In one embodiment, all the triggers, all the latches, and all the latch receiving portions are located on one side of the second outer contour surface. In one embodiment, the latches and the triggers are movably disposed on the housing, the latch receiving portions are disposed on the battery pack, the number of latch receiving portions is only one, and the latch receiving portion is configured to engage with at least one latch.

[0024] In one embodiment, the battery pack further includes a battery pack base, which includes a plurality of terminals electrically connected to the power tool. In a direction perpendicular to the insertion direction of the battery pack, the battery pack base is disposed close to the first outer contour surface and far away from the second outer contour surface.

[0025] In one embodiment, the power tool is configured to drive the same latch to move sequentially to the first travel distance and the second travel distance based on an external force applied to the trigger; or, based on an external force applied to the trigger, the two latches are driven to move sequentially to the first travel distance and the second travel distance, respectively.

[0026] In one embodiment, the latch and the trigger are disposed on the housing, and the latch receiving part is disposed on the battery pack; or the latch and the trigger are disposed on the battery pack housing, and the latch receiving part is disposed on the housing.

[0027] In one embodiment, the battery pack mounting portion allows for the insertion and connection of a battery pack, and the straight-line distance between the first trigger and the second trigger is no greater than 12 cm in a direction perpendicular to the battery pack insertion direction. In another embodiment, the trigger is movably disposed relative to the latch linkage and can abut against the latch linkage.

[0028] In one embodiment, the latch linkage is movably disposed relative to the latch and can abut against the latch; or, the latch linkage is fixedly connected to the latch.

[0029] In one embodiment, the suppressor is movably disposed relative to the housing; in the locked state, the suppressor locks the trigger or blocks the operating end of the trigger to prevent the trigger from moving the bolt.

[0030] In one embodiment, the first trigger is directly connected to, indirectly connected to, or abuts against the first locking tongue; the second trigger is directly connected to, indirectly connected to, or abuts against the second locking tongue.

[0031] This invention provides a power tool, comprising: a housing having a battery pack mounting portion detachably connected to a battery pack, the battery pack being configured to provide power to the power tool; a locking assembly including a latch, a latch receiving portion, and a trigger, the trigger acting on the latch and moving the latch; characterized in that the latch and the trigger are movably disposed on one of the housing and the battery pack, and the latch receiving portion is disposed on the other of the housing and the battery pack; the latch engages with the latch receiving portion to lock the battery pack relative to the housing; the latch disengages from the latch receiving portion to unlock the battery pack relative to the housing; the power tool is configured such that an external force is applied to the trigger, the trigger generating at least two different actions to directly or indirectly move the latch relative to the latch receiving portion, the trigger including a first trigger and a second trigger; the battery pack includes a battery pack housing along three orthogonal spatial directions (x, y, z). Extending along the width axis W, thickness axis T, and height axis H of the battery pack housing, the battery pack housing 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 first trigger and the second trigger are both located on one side of a plane perpendicular to the thickness axis and passing through the midpoint of the thickness; or the first trigger and the second trigger are both located on one side of a plane perpendicular to the width axis and passing through the midpoint of the width.

[0032] This invention provides an electric tool, comprising: a housing with a battery pack mounting portion for inserting and connecting a battery pack, the battery pack being configured to provide power to the electric tool; and a locking assembly including a latch, a latch receiving portion, and a trigger; characterized in that the latch and the trigger are movably disposed on one of the housing and the battery pack, and the latch receiving portion is disposed on the other of the housing and the battery pack; the latch engages with the latch receiving portion to lock the battery pack relative to the housing; and the latch disengages from the latch receiving portion to unlock the battery pack relative to the housing; the electric tool... The tool is configured such that an external force is applied to the trigger, and the trigger generates at least two different actions to directly or indirectly move the bolt relative to the bolt receiving portion. The trigger includes a first trigger and a second trigger. The battery pack includes a battery pack housing, which includes a first outer contour surface and a second outer contour surface. The first outer contour surface and the second outer contour surface are disposed opposite each other in a direction perpendicular to the insertion direction of the battery pack. At least a portion of the bolt or the bolt receiving portion is disposed on the first outer contour surface, and both the first trigger and the second trigger are located on one side of the second outer contour surface.

[0033] This invention provides an electric tool, comprising: a housing having a battery pack mounting portion detachably connected to a battery pack, the battery pack being configured to provide power to the electric tool; a locking assembly including a latch, a latch receiving portion, and a trigger, the trigger acting on the latch and moving the latch; characterized in that the latch and the trigger are movably disposed on one of the housing and the battery pack, and the latch receiving portion is disposed on the other of the housing and the battery pack; the latch engages with the latch receiving portion to lock the battery pack relative to the housing; the latch disengages from the latch receiving portion to unlock the battery pack relative to the housing; the electric tool is configured such that an external force is applied to the trigger, the trigger generating at least two different actions to directly or indirectly move the latch relative to the latch receiving portion, the trigger including a first trigger and a second trigger; in a direction perpendicular to the insertion direction, both the first trigger and the second trigger are located on one side of the battery pack.

[0034] This invention provides a power tool, comprising: a housing having a battery pack mounting portion; a battery pack detachably attached to the battery pack mounting portion for supplying power to the power tool, the battery pack including a battery pack housing; and a locking assembly including a latch, a latch receiving portion, and a trigger; the latch and the trigger are movably disposed on one of the housing and the battery pack housing, the latch receiving portion being disposed on the other of the housing and the battery pack housing, the latch engaging with the latch receiving portion to lock the battery pack relative to the housing; the trigger acting on the latch and moving the latch, and the trigger configured to: control the latch to disengage from the latch receiving portion based on at least two unlocking actions applied to the trigger, thereby unlocking the battery pack relative to the housing.

[0035] In one embodiment, the unlocking action is configured to: apply a force to the trigger and cause the trigger to move; the at least two unlocking actions applied to the trigger include two unlocking actions with different directions of force applied to the trigger at least within a portion of the moving stroke, or two unlocking actions with the same direction of force applied intermittently.

[0036] In one embodiment, the latch receiving portion includes at least one stop space that can engage with the latch and stop the latch; applying the at least two unlocking actions to the trigger can cause the latch to move and disengage from the stop space of the latch receiving portion, thereby unlocking the battery pack relative to the housing.

[0037] In one embodiment, the locking assembly includes a latch linkage member capable of moving the latch; the at least two unlocking actions applied to the trigger member include a first unlocking action and a second unlocking action, the first unlocking action and the second unlocking action causing the trigger member to travel a first stroke and a second stroke, respectively; the first stroke is configured to move the trigger member to a position where the latch linkage member can be triggered; the second stroke is configured to move the latch linkage member to move the latch until the latch disengages from the latch receiving portion, thereby unlocking the battery pack relative to the housing; the first stroke and the second stroke correspond to different directions of the forces applied to the trigger member within at least a portion of their travel.

[0038] In one embodiment, both the first unlocking action and the second unlocking action are applied to the trigger; the first stroke is configured to move the trigger to abut against the latch linkage; the second stroke is configured to move the trigger further and drive the latch linkage to move, the latch linkage driving the latch to move until the latch disengages from the latch receiving part, thereby unlocking the battery pack relative to the housing.

[0039] In one embodiment, the latch linkage is movably disposed relative to the latch and can abut against the latch. In another embodiment, the latch linkage is fixedly connected to the latch. In yet another embodiment, the locking assembly further includes a latch elastic reset member, which acts on the latch to apply a force to the latch, causing it to move toward the latch receiving portion. In one embodiment, the latch linkage is pivotally mounted on the housing or the battery pack housing about a first pivot. The latch linkage includes a latch abutment and a trigger abutment. The trigger abutment and the latch abutment pivot synchronously about the first pivot. The trigger is movably mounted on the housing or the battery pack housing and can move to abut against the trigger abutment and drive the trigger abutment to pivot about the first pivot. The latch abutment is used to abut against the latch and pivot with the trigger abutment about the first pivot, thereby driving the latch to move away from the latch receiving part.

[0040] In one embodiment, the trigger further includes a trigger elastic reset member, the trigger including an initial position in its state where the unlocking action is not applied, the trigger elastic reset member acting on the trigger to apply a force to the trigger causing it to move toward the initial position.

[0041] In one embodiment, the trigger is pivotally connected to the housing or the battery pack housing about a second pivot, or the trigger is pivotally connected to the latch linkage about a second pivot; the first unlocking action is configured to flip the trigger so that it pivots about the second pivot to abut against the latch linkage; the second unlocking action is configured to further push the trigger, causing the trigger to move and drive the latch linkage to pivot about the first pivot, the latch linkage driving the latch to move until the latch disengages from the latch receiving part, thereby unlocking the battery pack relative to the housing.

[0042] In one embodiment, the trigger is pivotally connected about the second pivot to the trigger abutment portion of the latch linkage. In another embodiment, the trigger elastic reset element is a torsion spring that engages between the trigger and the housing or the battery pack housing.

[0043] The power tool and the unlocking method for the battery pack connected to the power tool 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 the power tool. Attached Figure Description

[0044] 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.

[0045] 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.

[0046] Figure 1 This is a perspective view of the overall structure of a power tool according to an embodiment of this application;

[0047] Figure 2 This is a partial perspective view of a power tool according to an embodiment of this application;

[0048] Figure 3 This is a partial front view of the structure of a power tool according to an embodiment of this application;

[0049] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0050] Figure 5 for Figure 3 Enlarged view of point B in the middle;

[0051] Figure 6 This 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;

[0052] 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;

[0053] 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;

[0054] Figure 9 This is a schematic diagram of the structure of a locking component according to an embodiment of this application;

[0055] 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;

[0056] 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;

[0057] 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;

[0058] Figure 13 This is a partial perspective view of a power tool according to another embodiment of this application;

[0059] Figure 14 This is a partial front view of the structure of a power tool according to another embodiment of this application;

[0060] Figure 15 for Figure 13 Enlarged view of point C in the middle;

[0061] Figure 16 for Figure 14 Enlarged view at point D;

[0062] 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;

[0063] 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;

[0064] 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;

[0065] Figure 20This is a schematic diagram of the structure of a locking component according to another embodiment of this application;

[0066] Figure 21 This is a partial structural schematic diagram of a locking component according to another embodiment of this application;

[0067] Figure 22 This is a schematic diagram of the trigger element according to another embodiment of this application from a first-view perspective.

[0068] Figure 23 This is a schematic diagram of the trigger element according to another embodiment of this application from a second perspective.

[0069] 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;

[0070] Figure 25 For this application Figure 24 Enlarged view at point E in the middle;

[0071] Figure 26 This is an enlarged view of the locking component in a second state according to another embodiment of this application;

[0072] Figure 27 This is a top view of the overall structure of the power tool according to a second embodiment of this application;

[0073] Figure 28 This is a rear view of the overall structure of the power tool according to a second embodiment of this application;

[0074] Figure 29 This is a partial structural cross-sectional view of a power tool according to a second embodiment of this application;

[0075] Figure 30 for Figure 27 Enlarged view at point F;

[0076] Figure 31 for Figure 29 Enlarged view of point G in the middle;

[0077] 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;

[0078] Figure 33 for Figure 32 Enlarged view of point J in the middle;

[0079] Figure 34 This is an enlarged view of the locking component in the second state according to three embodiments of this application;

[0080] Figure 35 This is an enlarged view of the locking component in the second state according to three embodiments of this application;

[0081] Figure 36 This is a schematic diagram of the battery pack structure according to three embodiments of this application;

[0082] Figure 37 This is a perspective view of the overall structure of the power tools according to four embodiments of this application;

[0083] Figure 38 This is a perspective view of the overall structure of the electric hammer according to the fifth embodiment of this application.

[0084] Figure 39 This is a schematic diagram of the unlocking component in one of the six embodiments of this application;

[0085] Figure 40 This is a schematic diagram of the unlocking component in one of the seven embodiments of this application. Detailed Implementation

[0086] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0087] To reduce the risk of the battery pack 2 detaching from the power tool, related technologies typically include an interlocking mechanism between the battery pack 2 and the power tool's housing 1. The interlocking mechanism usually unlocks by applying an unlocking action to the battery pack 2's unlock button. However, in complex working environments, the risk of the battery pack 2 accidentally unlocking is significant, especially in high-altitude operations, such as working in trees. The battery pack 2's unlock button might be touched by tree branches or the operator, causing the battery pack 2 to detach from the power tool, potentially injuring nearby people or animals, or damaging property. This poses a significant safety hazard when using the power tool.

[0088] To address the technical problem that the battery pack 2 of a power tool is easily unlocked by accidental contact, leading to its abnormal detachment from the tool, this application provides a power tool that effectively reduces the risk of accidental unlocking of the battery pack 2. The power tool of this application can be a chainsaw 100, a hammer drill 200, an electric drill, etc., but is not limited to these. This application is particularly applicable to power tools used for high-altitude operations, such as the chainsaw 100 used for tree work. The following description uses the chainsaw 100 as an example to illustrate the power tool of this application in detail; however, it should be noted that the power tool of this application is not limited to this.

[0089] Reference Figures 1 to 3The power tool includes a housing 1 and a locking assembly 3. The housing 1 has a battery pack mounting section 101, which is detachably connected to a battery pack 2 configured to provide power to the power tool. The locking assembly 3 includes a latch 31, a latch receiving section 32, and a trigger 33 (also referred to as a trigger mechanism).

[0090] The locking tongue 31 and the trigger 33 are movably disposed on one of the housing 1 and the battery pack 2, and the locking tongue receiving part 32 is disposed on the other of the housing 1 and the battery pack 2. When the locking tongue 31 engages with the locking tongue receiving part 32, the battery pack 2 is locked relative to the housing 1; when the locking tongue 31 disengages from the locking tongue receiving part 32, the battery pack 2 is unlocked relative to the housing 1. Specifically, the locking tongue 31 and the trigger 33 are movably disposed on the housing 1, and the locking tongue receiving part 32 is disposed on the battery pack 2; or, the locking tongue 31 and the trigger 33 are movably disposed on the battery pack 2, and the locking tongue receiving part 32 is disposed on the housing 1.

[0091] The power tool is configured such that an external force is applied to the trigger 33, and the trigger 33 generates at least two different actions (also called unlocking actions) to directly or indirectly drive the locking tongue 31 to move relative to the locking tongue receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1. The number of triggers 33 is configured to be one or more.

[0092] It is understood that at least two different actions generated by the trigger 33 are actions caused by external forces applied to the trigger 33, such as the movement made by the trigger 33 when the operator applies force to it. The trigger 33 is the object to which the external force is applied; of course, the object of the force application includes, but is not limited to, the operator, and can also be other objects. The methods of applying the force include direct contact operation, indirect operation to transmit the force to the trigger 33, etc., but are not limited to these.

[0093] In some embodiments, when a single trigger 33 is configured, based on an external force applied to the trigger 33, the trigger 33 generates at least two different actions to directly or indirectly move the latch 31 relative to the latch receiving portion 32, thereby unlocking the battery pack 2 relative to the housing 1. In some embodiments, multiple triggers 33 are configured, and based on the application of an external force, multiple triggers 33 generate at least two different actions to directly or indirectly move the latch 31 relative to the latch receiving portion 32, thereby unlocking the battery pack 2 relative to the housing 1. For example, the number of multiple triggers 33 can be two.

[0094] At least two different actions generated by the trigger 33 are required to unlock the battery pack 2 relative to the housing 1. In other words, a single action is insufficient to unlock the battery pack 2 relative to the housing 1. The external force that causes accidental contact usually only causes the trigger 33 to generate a single action. Therefore, unlocking the battery pack 2 relative to the housing 1 by using at least two different actions of the trigger 33 can effectively reduce the risk of the battery pack 2 being unlocked due to accidental contact.

[0095] Reference Figure 12 and Figure 15 The battery pack 2 includes a battery pack housing 201, which includes a first slide rail and a second slide rail arranged in parallel for guiding the battery pack 2 to be inserted and connected to a power tool.

[0096] In one embodiment, one or more trigger elements 33 are disposed on one side of the battery pack 2. All trigger elements 33 subject to external force are located on the same side of the battery pack 2. Optionally, the trigger element 33 and the latch 31 are disposed on the housing 1, and the latch receiving portion 32 is disposed on the battery pack 2. The battery pack housing 201 has a top and a bottom disposed opposite to each other, as well as a first side and a second side disposed opposite to each other, and the latch receiving portion 32 is disposed on the top. The first slide rail and the second slide rail, the top and the bottom all extend along the insertion direction of the battery pack 2. One or more trigger elements 33 are located on one side of the top or the bottom.

[0097] This design, on the one hand, allows the operator to operate their fingers within a limited area when unlocking the battery pack 2, reducing the need for large finger movements or the need for fingers to spread wide when multiple fingers are required. The implementation scheme provided in this application also features a more compact and aesthetically pleasing structure.

[0098] Considering the longer straight-line distance between the multiple triggers 33 scattered on multiple sides, it becomes more difficult for the operator to unlock the battery pack 2 using only one hand. To allow the operator to comfortably trigger multiple triggers 33 (e.g., two triggers 33) with one hand, the size design of the battery pack 2 must be subject to stricter requirements. For example, the front-to-back or left-to-right dimensions of the battery pack 2 should be as small as possible to shorten the distance between the multiple triggers 33 and facilitate unlocking. This inevitably limits the design of the battery pack 2 and hinders its versatility in design scenarios. Furthermore, for an implementation where only one trigger 33 is located in the housing 1, only one locking tongue 31 can be used, resulting in a simpler structure. The locking tongue 31 can directly engage with the locking tongue receiver 32 of the existing battery pack 2 platform, providing better compatibility with the existing battery pack 2 platform.

[0099] In one embodiment, such as Figure 1As shown, the battery pack housing 201 extends along three orthogonal spatial directions (x, y, z) with respect to its width axis W, thickness axis T, and height axis H. 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 trigger elements 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 trigger elements 33 are located on one side of a plane P2 perpendicular to the width axis and passing through the midpoint of the width.

[0100] It should be noted that the battery pack housing 201 extends along the width axis W, thickness axis T, and height axis H. The battery pack housing 201 is not limited to a standard cuboid; it can be other irregular shapes, such as chamfered edges, partial surface recesses or protrusions, etc. The width axis W, thickness axis T, and height axis H directions are only used to describe the approximate extension directions of the battery pack housing 201. Specifically, the width of the battery pack housing 201 is the line segment between the two outermost points on two opposite surfaces of the battery pack 2 along the width axis W and the perpendiculars to the same width axis W; the midpoint of the width is the midpoint of this line segment. The thickness of the battery pack housing 201 is the line segment between the two outermost points on two opposite surfaces of the battery pack 2 along the thickness axis T and the perpendiculars to the same thickness axis T; the midpoint of the thickness is the midpoint of this line segment. The height of the battery pack housing 201 is the line segment between the two outermost points on two opposite surfaces of the battery pack 2 along the height axis H and the perpendiculars to the same height axis H.

[0101] In one embodiment, all triggers 33 are located on one side of a plane P1 that is perpendicular to the thickness axis and passes through the midpoint of the thickness, or all triggers 33 are located on one side of a plane P2 that is perpendicular to the width axis and passes through the midpoint of the width.

[0102] It is understandable that one or more trigger elements 33 are located on one side of plane P1, which is perpendicular to the thickness axis and passes through the midpoint of the thickness; or, one or more trigger elements 33 are located on one side of plane P2, which is perpendicular to the width axis and passes through the midpoint of the width. This reduces the need for the operator to move their fingers over a large area when unlocking the battery pack 2, making it easier for the operator to operate the trigger element 33 with one hand to control the battery pack 2 to unlock relative to the housing 1. Furthermore, the structural design is more compact, and the machine has a more aesthetically pleasing appearance.

[0103] Optionally, all triggers 33 and all bolts 31 are located on the same side of the battery pack 2.

[0104] Optionally, all triggers 33 and all latches 31 are located on one side of a plane P1 that is perpendicular to the thickness axis and passes through the midpoint of the thickness, or all triggers 33 and all latches 31 are located on one side of a plane P2 that is perpendicular to the width axis and passes through the midpoint of the width.

[0105] Alternatively, all triggers 33, all latches 31, and all latch receiving parts 32 may be located on one side of a plane P1 that is perpendicular to the thickness axis and passes through the midpoint of the thickness; or, all triggers 33, all latches 31, and all latch receiving parts 32 may be located on one side of a plane P2 that is perpendicular to the width axis and passes through the midpoint of the width.

[0106] It is understandable that having more components located on the same side of the battery pack 2, or on the same side of plane P1 or plane P2, among all triggers 33, all latches 31, and all latch receivers 32, would make the structural design of the locking assembly 3 simpler and more compact, which would help reduce the size of the power tool and make the machine more aesthetically pleasing.

[0107] Furthermore, the number of latches 31 can be one or more, and the number of latch receiving parts 32 that cooperate with one or more latches 31 can also be one or more; correspondingly, the number of triggers 33 can also be one or more.

[0108] As an example, refer to Figures 3 to 8 The locking assembly 3 includes a latch 31, a latch receiving part 32, and a trigger 33. The latch 31 and the trigger 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 trigger 33, the latch 31, and the latch receiving part 32 are all located on one side of a plane P1 that is perpendicular to the thickness axis T and passes through the midpoint of the thickness.

[0109] As another example, see Figure 39 The locking assembly 3 includes two latches 31, two latch receiving parts 32, and a 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 latches 31 and the trigger 33 are movably mounted on the housing 1, and the latch receiving parts 32 are mounted on the battery pack 2. In this embodiment, 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; the first latch 3111 and the second latch 3112 are located on opposite sides of the plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness; the first latch 3111 receiving part 32 and the second latch 3112 receiving part 32 are located on opposite sides of the plane P1 perpendicular to the thickness axis T and passing through the midpoint of the thickness.

[0110] As yet another example, see reference Figure 37 The locking assembly 3 includes a latch 31, a latch receiving part 32, and a trigger 33. The latch 31 and the trigger 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 trigger 33, the latch 31, and the latch receiving part 32 are all located on one side of a plane P2 that is perpendicular to the width axis W and passes through the midpoint of the width.

[0111] As another example, see Figures 27 to 31 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 two triggers 33, the two latches 31, and the latch receiving part 32 are all located on one side of a plane P1 that is perpendicular to the thickness axis and passes through the midpoint of the thickness.

[0112] Based on the external force applied to the trigger 33, the trigger 33 generates at least two different actions, including: one action that causes the trigger 33 to move while the battery pack 2 remains locked relative to the housing 1; and another action that causes the trigger 33 to move and drive the locking tongue 31 to move, thereby unlocking the battery pack 2 relative to the housing 1. For ease of explanation, one action is referred to as the first action, and the other action as the second action.

[0113] It should be noted that the first action and the second action are only used to represent two different actions. The first and second actions do not limit the order of the two actions, nor do they limit the continuity of the two actions. For example, there can be other actions in between the two actions.

[0114] It is understandable that the first action of trigger 33 does not unlock the battery pack 2 relative to the housing 1, while the second action of trigger 33 unlocks the battery pack 2 relative to the housing 1. In other words, the battery pack 2 can only be unlocked relative to the housing 1 based on at least the first and second actions of trigger 33.

[0115] In one embodiment, based on the application of external force to the trigger 33, the trigger 33 generates at least two different actions, including: a first action, in which the trigger 33 moves while the latch 31 remains stationary; and a second action, in which the trigger 33 moves and causes the latch 31 to move. By applying external force to the trigger 33 and generating at least two different actions, the battery pack 2 is successfully unlocked and can be detached from power tools.

[0116] As an example, such as Figures 3 to 8 As shown, the locking assembly 3 also includes a latch linkage 34. One action of the trigger 33, the first action, positions the trigger 33 in a position that allows the latch 31 to move. The second action of the trigger 33 moves the latch linkage 34, causing the latch 31 to move relative to the latch receiving part 32, thereby unlocking the battery pack 2 relative to the power tool. In this example, if the trigger 33 does not perform the first action, it cannot move the latch linkage 34. The first action of the trigger 33 moves it to a position where it can move the latch 31.

[0117] It should be noted that the position where the trigger 33 is in a position that allows the bolt 31 to move should be understood as: the user can directly apply force to the trigger 33 to make the trigger 33 move without any other action, and the movement of the trigger 33 can drive the bolt 31 to move.

[0118] Specifically, the latch linkage 34 is configured to move under the influence of the trigger 33, thereby causing the latch 31 to move. Further, the trigger 33 is movably positioned relative to the latch linkage 34 and can abut against it. The latch linkage 34 is movably positioned relative to the latch 31 and can abut against it; alternatively, the latch linkage 34 and the latch 31 are fixedly connected. The latch linkage 34 pivots around a fixed pivot.

[0119] In one example, such as Figures 3 to 8 As shown, the locking assembly 3 includes a latch 31, a latch receiving part 32, a trigger 33, and a latch linkage 34. The trigger 33 pivots around a pivot axis. The first action of the trigger 33 moves the trigger 33 to a position abutting against the latch linkage 34. The second action of the trigger 33 causes the trigger 33 to move the latch linkage 34, thereby causing the latch 31 to move and disengage from the latch receiving part 32. In this embodiment, the first action of the trigger 33 causes the trigger 33 to move, while the latch 31 remains stationary.

[0120] In another example, such as Figures 14 to 19 As shown, the trigger 33 moves along a straight guiding direction. The first action of the trigger 33 moves it to a position that can move the latch linkage 34. The second action of the trigger 33 moves the latch linkage 34, which in turn moves the latch 31, disengaging it from the latch receiving part 32. In this embodiment, the first action of the trigger 33 causes the trigger 33 to move, while the latch 31 remains stationary.

[0121] In another example, trigger 33 includes a first trigger 331 and a second trigger 332. Optionally, the first trigger 331 and the second trigger 332 are set independently of each other. The first trigger 331 and the second trigger 332 move independently of each other.

[0122] There are two implementations of the trigger 33 described above. As another example, such as... Figures 24 to 26 As shown, the trigger 33 also includes a first trigger 331 and a suppressor 333 (which may be referred to as a second trigger 332) that locks the first trigger 331. The suppressor 333 includes a first position and a second position that moves relative to the housing 1. In the first position, the suppressor 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.

[0123] It should be noted that the suppressor 333 prevents the first trigger 331 from moving the bolt 31. This should be understood as follows: if the user does not operate the suppressor 333, the trigger 33 cannot be operated to unlock the battery pack 2. Specifically, the suppressor 333 can be configured to lock the trigger 33 or block the operating end 3311 of the trigger 33 to prevent the trigger 33 from unlocking the battery pack 2, but is not limited to these methods. For ease of understanding, the end of the trigger 33 used to apply external force is defined as the operating end 3311 of the trigger 33.

[0124] In this embodiment, one action generated by the trigger 33, namely the first action, is configured as the movement trajectory generated by the suppressor 333, and another action generated by the trigger 33, namely the second action, is configured as the movement trajectory generated by the first trigger 331. The movement trajectory generated by the suppressor 333 moves the suppressor 333 from the first position to the second position, allowing the first trigger 331 to drive the bolt 31 to move. The movement trajectory generated by the trigger 33 also allows the first trigger 331 to drive the bolt 31 to disengage relative to the bolt receiving part 32. In this embodiment, the first action of the trigger 33 causes the trigger 33 to move while the bolt 31 does not move.

[0125] Specifically, the suppressor 333 is guided to slide or pivotally connect to the housing 1. The suppressor 333 is interlocked with the trigger 33, or the suppressor 333 blocks the operating end 3311 of the trigger 33. All of these are locking of the first trigger 331 by the suppressor 333, so as to prevent the user from directly operating the trigger 33 to unlock the battery pack 2.

[0126] There are two examples of trigger 33 mentioned above. As another example, such as... Figure 40As shown, the trigger 33 includes a first trigger 331 and a second trigger 332. The latch 31 has only one component. The locking assembly 3 also includes a first actuator 351 and a second actuator 352 that move independently. The first actuator 351 is located between the first trigger 331 and the latch 31. The second actuator 352 is located between the second trigger 332 and the latch 31. Both the first actuator 351 and the second actuator 352 have an initial locked position and an unlocked position after moving a certain trajectory relative to the locked position. The first trigger 331 is configured to drive the first actuator 351 to move between the locked and unlocked positions, and the second trigger 332 is configured to drive the second actuator 352 to move between the locked and unlocked positions. In this example, when at least one of the first actuator 351 and the second actuator 352 is in the locked position, the latch 31 engages with the latch receiving portion 32; when both the first actuator 351 and the second actuator 352 are in the unlocked position, the latch 31 disengages from the latch receiving portion 32.

[0127] In this embodiment, one action generated by the trigger 33, namely the first action, is configured as the movement of the first trigger 331 to drive the first moving member 351 to the unlock position; the other action generated by the trigger 33, namely the second action, is configured as the movement of the second trigger 332 to drive the second moving member 352 to the unlock position.

[0128] In another embodiment, based on the application of an external force to the trigger 33, the trigger 33 generates at least two different actions, including: one action by the trigger 33 causing the trigger 33 to move, thereby moving at least part of the latch 31, but without unlocking the battery pack 2 relative to the housing 1; and another action by the trigger 33 causing the trigger 33 to move and move the latch 31, thereby unlocking the battery pack 2 relative to the housing 1. Further, there are at least two scenarios where at least part of the latch 31 is moved. One scenario is that the trigger 33 moves only a short distance, in which case the latch 31 is not completely disengaged from the latch receiving part 32. Another scenario is that the trigger 33 moves one latch 31 and disengages it from the latch receiving part 32. In this case, other latches 31 remain engaged with the latch receiving part 32. In this embodiment, there are at least two latches 31.

[0129] As an example, such as Figures 27 to 31 As shown, the trigger 33 includes a first trigger 331 and a second trigger 332, and the latch 31 includes a first latch 3111 and a second latch 3112 that move independently. The first trigger 331 is configured to drive the first latch 3111 to move, and the second trigger 332 is configured to drive the second latch 3112 to move.

[0130] 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.

[0131] 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.

[0132] In one embodiment, there is only one trigger 33, and at least two different actions are generated sequentially by one trigger 33.

[0133] 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.

[0134] 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.

[0135] As another example, such as Figure 39As shown, the locking assembly 3 includes two latches 31, two latch receiving parts 32, and a 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. In this embodiment, the first action of the trigger 33 causes the trigger 33 to move, driving the first latch 3111 to move and disengage from the first latch 3111 receiving part 32, without unlocking the battery pack 2 relative to the housing 1. The second action of the trigger 33 causes the trigger 33 to move, driving the second latch 3112 to move and disengage from the second latch 3112 receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1. The first and second actions are generated sequentially by a single trigger 33.

[0136] In one embodiment, the trigger 33 includes a first trigger 331 and a second trigger 332. An action generated by the first trigger 331 causes the first trigger 331 to move, and the battery pack 2 is not unlocked relative to the housing 1. Another action generated by the second trigger 332 causes the second trigger 332 to move and drive the locking tongue 31 to move, so that the battery pack 2 is unlocked relative to the housing 1.

[0137] It is understandable that by applying force to the first trigger 331 and the second trigger 332 respectively, so that the first trigger 331 and the second trigger 332 can each produce an action, so that the battery pack 2 can be unlocked relative to the housing 1, which can effectively reduce the risk of the battery pack 2 being unlocked due to accidental touch.

[0138] As an example, such as Figures 27 to 31 As shown, the trigger 33 includes a first trigger 331 and a second trigger 332, and the latch 31 includes a first latch 3111 and a second latch 3112 that move independently. The first trigger 331 is configured to drive the first latch 3111 to move, and the second trigger 332 is configured to drive the second latch 3112 to move.

[0139] In this embodiment, one action generated by the trigger 33 is configured as the motion trajectory generated by the first trigger 331, so that the first trigger 331 drives the first latch 3111 to disengage from the latch receiving part 32, and another action generated by the trigger 33 is configured as the motion trajectory generated by the second trigger 332, so that the second trigger 332 drives the second latch 3112 to disengage from the latch receiving part 32.

[0140] As another example, such as Figure 40As shown, the trigger 33 includes a first trigger 331 and a second trigger 332. There is only one locking tongue 31. The locking assembly 3 also includes a first actuator 351 and a second actuator 352 that move independently. The first actuator 351 and the second actuator 352 have a locked position and an unlocked position, respectively. The first trigger 331 is configured to drive the first actuator 351 to move between the locked position and the unlocked position. The second trigger 332 is configured to drive the second actuator 352 to move between the locked position and the unlocked position. When at least one of the first actuator 351 and the second actuator 352 is in the locked position, the locking tongue 31 engages with the locking tongue receiving part 32. When both the first actuator 351 and the second actuator 352 are in the unlocked position, the locking tongue 31 disengages from the locking tongue receiving part 32.

[0141] In this embodiment, one action generated by the trigger 33 is configured as the movement of the first trigger 331, so as to drive the first moving member 351 to the unlock position; the other action generated by the trigger 33 is configured as the movement of the second trigger 332, so as to drive the second moving member 352 to the unlock position.

[0142] In one embodiment, one action of the trigger 33 realizes a first stroke trajectory (also referred to as the first stroke) of the trigger 33; another action of the trigger 33 realizes a second stroke trajectory (also referred to as the second stroke) of the trigger 33, different from the first stroke trajectory. The power tool is configured such that the battery pack 2 is unlocked relative to the housing 1 based at least on the first and second stroke trajectories. The first and second stroke trajectories of the trigger 33 are not on a straight line. Further, the first and second stroke trajectories are in different or parallel directions.

[0143] It should be noted that the travel trajectory can be the movement trajectory of any point on the trigger 33. The first travel trajectory and the second travel trajectory are not on the same straight line. They can be non-linear; they can both be straight lines with different directions; they can both be straight lines, parallel and non-overlapping; or they can be other forms, not limited to these.

[0144] It is understandable that the first and second stroke trajectories are not on the same straight line, which means that applying a force in one direction to the trigger 33 cannot unlock the battery pack 2 relative to the housing 1. The external force that causes accidental contact can usually only apply a force in one direction. Therefore, the risk of the battery pack 2 being unlocked due to accidental contact can be effectively reduced.

[0145] Furthermore, the number of triggers 33 is only one, and the first stroke trajectory and the second stroke trajectory are generated by the sequential movement of the same trigger 33; or the number of triggers 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 triggers 33.

[0146] As an example, such as Figures 3 to 8 As shown, the locking component 3 includes only one trigger 33. The first travel trajectory and the second travel trajectory are generated by the sequential movement of the trigger 33. Specifically, the trigger 33 pivots around a pivot axis, and moves along the first travel trajectory to a position that can move the bolt 31. The trigger 33 then continues to move along the second travel trajectory, causing the bolt 31 to move and disengage from the bolt receiving part 32. In this embodiment, because the trigger 33 pivots, both the first and second travel trajectories are arcs and do not overlap.

[0147] As another example, such as Figures 14 to 19 As shown, the locking component 3 includes only one trigger 33. The first travel trajectory and the second travel trajectory are generated by the sequential movement of the trigger 33. Specifically, the trigger 33 moves along a straight guiding direction along the first travel trajectory until it reaches a position that can move the bolt 31. The trigger 33 then continues to pivot around a pivot axis, moving along the second travel trajectory, causing the bolt 31 to move and disengage from the bolt receiving part 32. In this embodiment, the first travel trajectory is a straight line, and the second travel trajectory is an arc.

[0148] As yet another example, such as Figures 27 to 31 As shown, there are two trigger elements 33, namely a first trigger element 331 and a second trigger element 332. The first trigger element 331 and the second trigger element 332 respectively drive the first locking tongue 3111 and the second locking tongue 3112 to move. The first stroke trajectory and the second stroke trajectory are generated by the movement of the first trigger element 331 and the second trigger element 332, respectively. In this embodiment, the first trigger element 331 and the second trigger element 332 have the same structure and the same movement mode, and the first stroke trajectory and the second stroke trajectory are parallel.

[0149] As another example, such as Figures 24 to 26 As shown, the trigger 33 includes a first trigger 331 and a suppressor 333 that locks the first trigger 331. The suppressor 333 includes a first position and a second position that moves relative to the housing 1. In the first position, the suppressor 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.

[0150] The first travel trajectory is generated by the movement of the suppressor 333, allowing the suppressor 333 to move from a first position to a second position, thus enabling the first trigger 331 to drive the bolt 31 to move. The first travel trajectory involves the suppressor 333 sliding or pivoting in a direction away from the first trigger 331. The second travel trajectory is generated by the first trigger 331, allowing it to disengage the bolt 31 from the bolt receiving portion 32. In this embodiment, the first and second travel trajectories are generated by the movements of the suppressor 333 and the first trigger 331, respectively; that is, they are generated by the sequential movement of different triggers 33, and the directions of the first and second travel trajectories are different.

[0151] In related technologies, to address the technical problem of accidental unlocking of the battery pack 2 in power tools, leading to its abnormal detachment from the power tool, two pairs of interlocking mechanisms are installed between the battery pack 2 and the power tool's housing 1. Specifically, the power tool has two locking tongues 31, two locking tongue receiving parts 32 that respectively cooperate with the two locking tongues 31, and two triggering elements 33 for controlling the movement of the two locking tongues 31. However, conventional battery packs 2 typically only have one locking tongue receiving part 32. This makes the power tool incompatible with existing battery pack 2 platforms and unable to implement the function of preventing accidental unlocking of the battery pack 2.

[0152] To ensure compatibility with existing battery packs 2 that have only one latch receiving part 32, and to implement the function of preventing accidental unlocking of battery pack 2, in one embodiment, the latch 31 and the trigger 33 are both movably disposed on the housing 1, and the latch receiving parts 32 are all disposed on the battery pack 2. There is only one latch receiving part 32, and the latch receiving part 32 is configured to engage with at least one latch 31.

[0153] 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, based on the application of external force to the trigger 33, the trigger 33 performs a first action, causing the trigger 33 to move while the latch 31 remains stationary, and the battery pack 2 remains locked relative to the housing 1. Based on the application of external force to the trigger 33, the trigger 33 performs a second action, causing the trigger 33 to move and disengage from the latch receiving part 32, thus unlocking the battery pack 2 relative to the housing 1. In this embodiment, only one latch receiving part 32 is provided. By applying force to the trigger 33, at least two different actions are required for the trigger 33 to unlock the battery pack 2 relative to the housing 1, effectively reducing the risk of the battery pack 2 being unlocked due to accidental contact.

[0154] As another example, such as Figures 27 to 31As 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. In this embodiment, the two latches 31 share a latch receiving part 32. By setting two triggers 33, force must be applied to the two triggers 33 to unlock 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 contact.

[0155] The power tool of this embodiment is compatible with the existing battery pack 2 which has only one locking tongue receiving part 32, and at the same time, it realizes the function of preventing accidental unlocking of the battery pack 2 on the basis of the battery pack 2 platform.

[0156] The chainsaw 100 used for tree work is typically intended for use by users when working in trees. The working environment is relatively complex, and users usually hang the chainsaw 100 on their body when climbing trees. During the climbing process, the chainsaw 100 will sway. Therefore, during the user's climbing and tree work, the unlock button of the battery pack 2 may touch the branches or the user's body, which may cause the battery pack 2 to be accidentally unlocked, causing the battery pack 2 to detach abnormally from the chainsaw 100, causing injury to people or animals in the vicinity, or damaging property, posing a significant safety hazard.

[0157] In one embodiment, refer to Figure 1 The power tool is a chainsaw 100, which includes a cutting assembly 62 and a top handle 63. The cutting assembly 62 is mounted on a housing 1 and includes a guide plate 641 and a saw chain 621 (also called a cutting chain) surrounding the guide plate 641. The guide plate 641 provides support and guides the saw chain 621. The top handle 63 is for the user to grip. The cutting assembly 62 is located on the front side of the housing 1 along the length of the chainsaw 100; the battery pack mounting section 101 is located on the rear side of the housing 1 along the length of the chainsaw 100; and the top handle 63 is located above the housing 1 along the height of the chainsaw 100.

[0158] It needs to be explained, such as Figure 1 As shown, the length extension direction L1 of the chainsaw 100 is the length extension direction of the guide plate 641, the height extension direction H1 of the chainsaw 100 is the height extension direction of the guide plate 641, and the width extension direction W1 of the chainsaw 100 is the thickness extension direction of the guide plate 641.

[0159] The top handle 63 includes a top handle housing 631, with at least a portion of the trigger 33 and the locking tongue 31 disposed within the top handle housing 631. It can be understood that by movably mounting the locking tongue 31 and the trigger 33 on the housing 1, and mounting the locking tongue receiving portion 32 on the battery pack 2, the trigger 33 can be mounted on the top handle housing 631, facilitating the user's one-handed operation to unlock the battery pack 2.

[0160] like Figure 12 The chainsaw 100 also includes a trigger 66 for controlling the operation or shutdown of the chainsaw 100. The trigger 66 is located on the upper or lower side of the top handle housing 631. The trigger 33 and the trigger 66 are respectively located on the same side or opposite side of the top handle housing 631 for convenient user operation.

[0161] The chainsaw 100 also includes an auxiliary handle 65, which is located on the side of the housing 1. Preferably, the auxiliary handle 65 is located on the left side of the housing 1.

[0162] The top handle 63 of the tree chainsaw 100 is located on the front side of the battery pack 2, making the chainsaw 100 smaller and more compact. When used with the auxiliary handle 65 located on the side of the housing 1, it is convenient for the operator's arm to operate in a confined space, and is especially suitable for use in complex operating environments such as tree work.

[0163] In some embodiments, the locking component 3 includes a bolt 31, a bolt receiving part 32, a trigger 33, and a bolt linkage part 34.

[0164] In some embodiments, the latch receiving portion 32 includes at least one stop space that can engage with and stop the latch 31; the latch 31 disengages from the stop space of the latch receiving portion 32, thereby unlocking the battery pack 2 relative to the housing 1. It is understood that the unlocking of the latch 31 from the latch receiving portion 32 can be achieved by the latch 31 disengaging from all the stops of the latch receiving portion 32.

[0165] The latch receiving part 32 is a lock groove or lock hole provided in the housing 1 or the battery pack housing 201. It can be understood that the lock groove or lock hole constitutes the stopping space of the latch receiving part 32 that can stop the latch 31.

[0166] like Figures 4 to 8 As shown, the latch 31 includes at least one protrusion 311, and the latch receiving portion 32 includes at least one recess 321. The protrusion 311 of the latch 31 engages with the recess 321 of the latch receiving portion 32, which can lock the battery pack 2 relative to the housing 1. When the protrusion 311 of the latch 31 disengages from the recess 321 of the latch receiving portion 32, the battery pack 2 can be unlocked relative to the housing 1.

[0167] As an example, the latch receiving part 32 includes a locking groove disposed on the housing 1 or the battery pack housing 201. The latch 31 includes a protrusion 311, and the locking groove includes a recess 321 that mates with the protrusion 311. The engagement of the protrusion 311 of the latch 31 with the recess 321 of the locking groove allows the battery pack 2 to be locked relative to the housing 1. That is, the protrusion 311 extends into the recess 321, locking the battery pack 2 relative to the housing 1 and preventing it from moving. The latch 31 and the latch receiving part 32 unlock and lock, that is, the protrusion 311 of the latch 31 disengages from the recess 321 of the locking groove, allowing the battery pack 2 to move relative to the housing 1.

[0168] As another example, the latch receiving part 32 includes a locking groove disposed on the housing 1 or the battery pack housing 201. The latch 31 includes a plurality of protrusions 311, and the locking groove includes a plurality of recesses 321 that correspond one-to-one with the plurality of protrusions 311. It is understood that the latch 31 can be an integral structure, such as extending from a main body to form a plurality of protrusions 311, all of which move synchronously with the main body; the latch 31 can also include a plurality of discrete structures, each of which forms a protrusion 311, and the plurality of discrete structures are synchronously linked with the movement of the triggering mechanism 33, that is, the protrusions 311 of the plurality of discrete structures synchronously engage with the plurality of recesses 321 of the locking groove to lock the battery pack 2, or synchronously disengage from the plurality of recesses 321 of the locking groove to unlock the battery pack 2.

[0169] As another example, the latch receiving part 32 includes a locking groove disposed on the housing 1 or the battery pack housing 201. The latch 31 includes one or more protrusions 311, and the locking groove includes one or more recesses 321 that mate with the one or more protrusions 311. The protrusions 311 and the recesses 321 are not in a one-to-one correspondence. For example, the latch 31 may include multiple pawls, and the locking groove may include a ratchet groove that mates with the multiple pawls; or a protrusion 311 may sequentially engage multiple locking grooves, etc., which will not be listed here.

[0170] In one embodiment, the longitudinal section of the recess 321 of the lock groove is a trumpet shape that gradually narrows from the outside to the inside, and the outer portion 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.

[0171] The trigger 33 is movably and guideably disposed on the housing 1. The trigger 33 moves relative to the housing 1, causing the latch 31 to engage or disengage from the latch receiving part 32. The trigger 33 is directly connected to the latch 31, or indirectly connected, or abuts against it.

[0172] like Figure 6 As shown, the locking component 3 also includes a trigger elastic reset member 334; the trigger member 33 includes an initial position in the state where no external force is applied, and the trigger elastic reset member 334 acts on the trigger member 33 to apply a force to the trigger member 33 to make it move toward the initial position.

[0173] like Figure 6 As shown, the locking assembly 3 also includes a latch elastic reset member 36; the latch elastic reset member 36 acts on the latch 31 to apply a force to the latch 31 to move it toward the latch receiving part 32. The latch 31 is provided with a reset member mounting part, one end of the latch elastic reset member 36 is attached to the reset member mounting part, and the other end abuts against the housing 1 or the battery pack housing 201.

[0174] In one embodiment, the latch 31 and trigger 33 are disposed on the housing 1, and the latch receiving part 32 is disposed on the battery pack 2; the housing 1 has a through hole for the latch 31 to extend into the battery pack mounting part 101. In another embodiment, the latch 31 and trigger 33 are disposed on the battery pack housing 201, and the latch receiving part 32 is disposed on the housing 1; the battery pack housing 201 has a through hole for the latch 31 to extend.

[0175] In one embodiment, refer to Figures 6 to 8 The latch linkage 34 is pivotally mounted on the housing 1 or the battery pack housing 201 around the first pivot 335. The latch linkage 34 includes a latch abutting part 341 and a trigger abutting part 342. The trigger 33 is movably mounted on the housing 1 or the battery pack housing 201 and can move to abut against the trigger abutting part 342 and drive the trigger abutting part 342 to pivot around the first pivot 335. The latch abutting part 341 is configured to abut against the latch 31 and drive the latch 31 to move away from the latch receiving part 32.

[0176] Specifically, the latch linkage 34 has a through shaft hole 343 through which the first pivot 335 passes, and the latch linkage 34 is pivotally mounted on the first pivot 335 through the through shaft hole 343. The trigger elastic reset member 334 is a torsion spring that is engaged between the trigger member 33 and the housing 1.

[0177] It is understood that the latch linkage 34 can be a one-piece structure, on which the latch abutment portion 341 and the trigger abutment portion 342 are formed in different directions. The latch linkage 34 can also include two separate components, on which the latch abutment portion 341 and the trigger abutment portion 342 are formed respectively, and the two separate components are synchronously linked by abutment engagement.

[0178] Further, the latch abutment portion 341 and the trigger abutment portion 342 are located on opposite sides of a plane passing through the pivot axis of the first pivot 335 and parallel to the direction of movement of the latch 31. Preferably, the angle between the extending direction of the latch abutment portion 341 and the extending direction of the trigger abutment portion 342 is 90° to 180°. More preferably, the angle between the extending direction of the latch abutment portion 341 and the extending direction of the trigger abutment portion 342 is 150° to 180°.

[0179] Reference Figure 9 The latch abutment portion 341 includes an extension portion 341a disposed generally along its extending direction and an abutment portion 341b connected to the outer end of the extension portion 341a. The abutment portion 341b has a smoothly transitioned outer contour in the pivoting direction of the latch abutment portion 341. As an example, the latch abutment portion 341 may include two symmetrically arranged abutment portions 341b, which are connected as one unit by the extension portion 341a.

[0180] In this embodiment, the latch linkage 34 includes two separate components: an upper linkage 342a and a lower linkage 342b. The trigger abutment portion 342 is formed on the upper linkage 342a, and the latch abutment portion 341 is formed on the lower linkage 342b. The upper linkage 342a and the lower linkage 342b achieve synchronous linkage through abutment engagement. Specifically, the upper linkage 342a and the lower linkage 342b are pivotally connected to a first pivot 335. An upper boss 342a1 is formed on the outer edge of the upper linkage 342a, and a lower boss 342b1 is formed on the outer edge of the lower linkage 342b. The upper boss 342a1 and the lower boss 342b1 abut against each other through abutment surfaces arranged radially along the first pivot 335 to achieve synchronous linkage between the upper linkage 342a and the lower linkage 342b.

[0181] In one embodiment, the latch linkage 34 is movably disposed relative to the latch 31 and can abut against the latch 31. It is understood that the latch linkage 34 and the latch 31 are two independent components.

[0182] Reference Figure 10The latch 31 is provided with a groove 314 into which the latch abutment portion 341 of the latch linkage 34 extends to limit its pivoting direction. It also has a reset member mounting portion 313, with one end of the latch elastic reset member 36 attached to the reset member mounting portion 313 and the other end abutting against the housing 1. The latch abutment portion 341 of the latch linkage 34 includes two abutment portions 341b. The reset member mounting portion 313 is at least partially disposed within the groove 314. The groove 314 has an opening in the middle of its side wall away from the protrusion 311 for the latch elastic reset member 36 to extend out. Two baffles 312 are formed on both sides of the side wall for abutting against the two abutment portions 341b of the latch linkage 34. Specifically, the latch elastic reset member 36 is a spring, and the reset member mounting part 313 is a column that is fixed in the groove 314 and tapers at the head, so that one end of the spring can be sleeved and locked onto the front end of the column. The cross-section of the column is cross-shaped. A spring limiting groove 103 is provided at a corresponding position on the housing 1 to limit the other end of the spring. By placing the reset member mounting part 313 in the groove 314, the latch 31 structure becomes more compact and smaller in size.

[0183] In one embodiment, such as Figures 4 to 8 As shown, the trigger 33 is pivotally connected to the housing 1 or the battery pack housing 201 about the second pivot 336; or the trigger 33 is pivotally connected to the latch linkage 34 about the second pivot 336. Further, the trigger 33 is pivotally connected to the latch linkage 34 about the second pivot 336. Specifically, the trigger 33 is pivotally connected to the trigger abutment portion 342 of the latch linkage 34 about the second pivot 336.

[0184] Furthermore, the trigger elastic reset member 334 is a torsion spring that is snapped between the trigger member 33 and the housing 1 or the battery pack housing 201.

[0185] The housing 1 or battery pack housing 201 is provided with a trigger element 33 mounting slot 4. The trigger element 33 is mounted in the trigger element 33 mounting slot 4 and does not protrude from the housing 1 or battery pack housing 201. This structure makes it less likely for the trigger element 33 to be accidentally activated. Furthermore, the trigger element 33 mounting slot 4 is provided with a limiting groove wall 41 for limiting the movement range of the trigger element 33 and a slot hole 42 for the trigger element 33 to extend into the housing 1 or battery pack housing 201, and an operating gap 43 is left between the operating end 3311 of the trigger element 33 and the trigger element 33 mounting slot.

[0186] In another embodiment, refer to Figures 11 to 16The trigger 33 is guided and moved along the first direction by the guide structure 337. The first unlocking action is configured to press the trigger 33 so that it moves along the first direction until it abuts against the latch linkage 34; the second unlocking action is configured to push the trigger 33 along the second direction so that the trigger 33 moves and drives the latch linkage 34 to pivot around the first pivot 335. The latch linkage 34 drives the latch 31 to move until the latch 31 disengages from the latch receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0187] Furthermore, referring to Figures 20 to 22 The guide structure 337 includes a guide block 3371 pivotally disposed around a first pivot 335 and a guide groove 3372 disposed on the trigger member 33 and cooperating with the guide block 3371. At this time, the first unlocking action is configured to press the trigger member 33 to move it along the first direction until it abuts against the latch linkage member 34; the second unlocking action is configured to push the trigger member 33 along the second direction, so that the trigger member 33 pivots around the first pivot 335 with the guide block 3371, and drives the latch linkage member 34 to pivot around the first pivot 335. The latch linkage member 34 drives the latch 31 to move until the latch 31 disengages from the latch receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0188] The trigger elastic reset element 334 is a spring disposed between the guide block 3371 and the guide groove 3372.

[0189] Reference Figures 17 to 19 The housing 1 or battery pack housing 201 is provided with a trigger 33 mounting slot 4. A limit wall 44 is provided at the trigger 33 mounting slot 4. The trigger 33 is provided with a stop surface 3313 that cooperates with the limit wall 44. The limit wall 44 is used to stop the stop surface 3313 so that the trigger 33 can move in a first direction before it leaves the stop surface of the limit wall 44 and cannot move in a second direction.

[0190] A guide wall 45 is also provided on the housing 1 or battery pack housing 201. The guide wall 45 is used to guide the trigger 33 to move along the second direction. As an example, the guide wall 45 extends approximately along the second direction. The guide wall 45 can guide the trigger 33 to a certain extent, making it easier for the user to find the force angle that matches the second direction, making the unlocking action of the battery pack 2 easier to operate.

[0191] In this embodiment, the locking tongue linkage 34 is an integral structure, and the locking tongue abutment 341 and the trigger abutment 342 are formed on the integral structure in different directions.

[0192] Reference 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 angle of force to cause the trigger 33 to perform the first and second actions, making unlocking the battery pack 2 easier.

[0193] Reference 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 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 groove 52 is provided on one of the battery pack 2 and the battery pack mounting part 101, and the slide rail 51 that guides and cooperates with the groove 52 is provided on the other. The battery pack 2 is guided and moved to the battery pack mounting part 101 through the cooperation of the groove 52 and the slide rail 51.

[0194] As an example, a groove 52 is provided on the battery pack mounting part 101, and a slide rail 51 is provided on the battery pack 2 to guide and cooperate 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. 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.

[0195] The battery pack mounting section 101 is provided with mounting section electrode terminals, which are electrically connected to the power tool. The battery pack 2 is provided with battery pack 2 electrode terminals. When the battery pack 2 is reliably installed in the battery pack mounting section 101, the mounting section electrode terminals and the battery pack 2 electrode terminals are mated, which can realize the electrical connection between the battery pack 2 and the power tool.

[0196] 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 fully inserted, the locking tongue 31 engages 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, locking the battery pack 2 relative to the housing 1. When the user needs to remove the battery pack 2, the battery pack 2 must first be unlocked, and then the battery pack 2 is pulled out along the guide direction.

[0197] 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.

[0198] The locking tongue 31 and the trigger 33 are movably disposed on one of the housing 1 and the battery pack 2, and the locking tongue receiving part 32 is disposed on the other of the housing 1 and the battery pack 2. When the locking tongue 31 engages with the locking tongue receiving part 32, the battery pack 2 is locked relative to the housing 1; when the locking tongue 31 disengages from the locking tongue receiving part 32, the battery pack 2 is unlocked relative to the housing 1.

[0199] The power tool is configured such that an external force is applied 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 part 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0200] The battery pack 2 includes a battery pack housing 201, which includes a first outer contour surface 71 and a second outer contour surface 72. The first outer contour surface 71 and the second outer contour surface 72 are arranged opposite each other in a direction perpendicular to the insertion direction of the battery pack 2. At least a portion of the latch 31 or the latch receiving portion 32 is disposed on the first outer contour surface 71, and the trigger 33 is located on one side of the second outer contour surface 72.

[0201] In one embodiment, all triggers 33 are located on one side of the second profile surface.

[0202] The number of latches 31 can be one or more, and the number of latch receiving parts 32 that cooperate with one or more latches 31 can also be one or more; correspondingly, the number of triggers 33 can also be one or more.

[0203] As an example, refer to Figures 3 to 8 The locking component 3 includes a latch 31, a latch receiving part 32, and a trigger 33. The latch 31 and the trigger 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 trigger 33 is located on one side of the second outer contour surface 72.

[0204] As another example, see 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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) with respect to 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.

[0209] 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.

[0210] 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.

[0211] 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.

[0212] It should be noted that the embodiments described above are free to be combined to form new embodiments, and therefore the embodiments already described above will not be repeated here.

[0213] 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.

[0214] The locking tongue 31 and the trigger 33 are movably disposed on one of the housing 1 and the battery pack 2, and the locking tongue receiving part 32 is disposed on the other of the housing 1 and the battery pack 2. When the locking tongue 31 engages with the locking tongue receiving part 32, the battery pack 2 is locked relative to the housing 1; when the locking tongue 31 disengages from the locking tongue receiving part 32, the battery pack 2 is unlocked relative to the housing 1.

[0215] There is only one trigger 33. The power tool is configured such that an external force is applied 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 part 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0216] It is understood that the power tool has only one trigger 33. The at least two different actions produced by the trigger 33 are caused by external forces applied to the same trigger 33, such as the actions produced by the operator applying force to the trigger 33. The trigger 33 is the object to which the external force is applied; of course, the object of the force application includes, but is not limited to, the operator, and can also be other objects. The methods of applying force include direct contact operation, indirect operation transmitting force to the trigger 33, etc., but are not limited to these.

[0217] At least two different actions of the trigger 33 are required to unlock the battery pack 2 relative to the housing 1. In other words, a single action is insufficient to unlock the battery pack 2 relative to the housing 1. The external force that causes accidental contact usually only causes the trigger 33 to produce a single action. Therefore, unlocking the battery pack 2 relative to the housing 1 by using at least two different actions of the trigger 33 can effectively reduce the risk of the battery pack 2 being unlocked due to accidental contact.

[0218] It is understandable that operating the same trigger 33 can unlock the battery pack 2 relative to the casing 1. This not only prevents the battery pack 2 from being unlocked due to accidental touch, but also makes it easier for users to unlock the battery pack 2.

[0219] 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 only one trigger 33. In this embodiment, when an external force is applied to the trigger 33, the trigger 33 moves, while the latch 31 remains stationary, and the battery pack 2 remains locked relative to the housing 1. When an external force is applied to the trigger 33, the trigger 33 moves, causing the latch 31 to move and disengage from the latch receiving part 32, thus unlocking the battery pack 2 relative to the housing 1.

[0220] As an example, such as Figure 39As shown, the locking assembly 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, and 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. In this embodiment, when an external force is applied to the trigger 33, the trigger 33 moves, causing the first latch 3111 to move and disengage from the first latch 3111 receiving part 32, and the battery pack 2 remains locked relative to the housing 1. When an external force is applied to the trigger 33, the trigger 33 moves, causing the second latch 3112 to move and disengage from the second latch 3112 receiving part 32, thus unlocking the battery pack 2 relative to the housing 1.

[0221] Further, the battery pack 2 includes a battery pack housing 201, which includes a first outer contour surface 71 and a second outer contour surface 72. The first outer contour surface 71 and the second outer contour surface 72 are arranged opposite each other in a direction perpendicular to the insertion direction of the battery pack 2. A first latch 3111 and a second latch 3112, or a first latch 3111 receiving part 32 and a second latch 3112 receiving part 32, are respectively disposed on the first outer contour surface 71 and the second outer contour surface 72. In a specific example, the latch 31 and the trigger 33 are movably disposed on the housing 1, the latch receiving part 32 is disposed on the battery pack 2, and the first latch 3111 receiving part 32 and the second latch 3112 receiving part 32 are respectively disposed on the first outer contour surface 71 and the second outer contour surface 72.

[0222] It should be noted that the embodiments described above are free to be combined to form new embodiments, and therefore the embodiments already described above will not be repeated here.

[0223] 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 power tool, this application also provides a method for unlocking the battery pack 2 that is coupled to the power tool, referring to... Figures 1 to 3 The power tool includes a housing 1 and a locking assembly 3 disposed on the housing 1. The housing 1 has a battery pack mounting section 101 for inserting and connecting a battery pack 2, which 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 33. The latch 31 and the trigger 33 are movably disposed on one of the housing 1 and the battery pack 2, and the latch receiving section 32 is disposed on the other of the housing 1 and the battery pack 2. The unlocking method includes at least the following steps:

[0224] The first step is to apply external force to the trigger 33, and the trigger 33 moves along the first stroke trajectory to ensure that the battery pack 2 is not unlocked relative to the housing 1.

[0225] In the second step, external force continues to be applied to the trigger 33, and the trigger 33 moves along the second stroke trajectory, realizing the movement of the trigger 33 and driving the locking tongue 31 to move.

[0226] The second travel trajectory is different from the first travel trajectory; there is only one trigger 33, and the trigger 33 in the first step and the second step is the same trigger 33.

[0227] It is understandable that an external force is applied to the trigger 33, causing it to move along a first stroke trajectory and a second stroke trajectory, thereby unlocking the battery pack 2 relative to the housing 1. For example, an operator applies force to the trigger 33, causing it to move along the first stroke trajectory and the second stroke trajectory. The trigger 33 is the object to which the external force is applied. Of course, the object of the applied force includes, but is not limited to, the operator, and can also be other objects. The methods of applying the force include direct contact operation, indirect operation, and transmitting the force to the trigger 33, but are not limited to these.

[0228] Furthermore, the first travel trajectory and the second travel trajectory are not on a straight line. It should be noted that the first travel trajectory and the second travel trajectory not being on a straight line can mean that the first travel trajectory and the second travel trajectory are not straight lines; it can mean that the first travel trajectory and the second travel trajectory are both straight lines, but in different directions; it can also mean that the first travel trajectory and the second travel trajectory are both straight lines, parallel to each other and not overlapping; or it can be other forms, not limited to these.

[0229] It is understandable that the first and second stroke trajectories are not on the same straight line, which means that applying a force in one direction to the trigger 33 cannot unlock the battery pack 2 relative to the housing 1. The external force that causes accidental contact can usually only apply a force in one direction. Therefore, the risk of the battery pack 2 being unlocked due to accidental contact can be effectively reduced.

[0230] Furthermore, in the second step, the trigger 33 moves the locking tongue 31, and the battery pack 2 is unlocked relative to the housing 1.

[0231] Furthermore, there is exactly one trigger element 33.

[0232] As an example, such as Figures 3 to 8 As shown, the locking component 3 includes a bolt 31, a bolt receiver 32, and a single trigger 33. The unlocking method includes at least the following steps:

[0233] 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.

[0234] 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.

[0235] 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:

[0236] 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.

[0237] 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.

[0238] 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.

[0239] 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.

[0240] 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:

[0241] 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.

[0242] 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 second locking tongue 3112 and disengaging it from the receiving part 32, so that the battery pack 2 is unlocked relative to the housing 1.

[0243] In one embodiment, refer to Figure 1 The power tool is a chainsaw 100, which includes a cutting assembly 62 and a top handle 63. The cutting assembly 62 is mounted on a housing 1 and includes a guide plate 641 and a saw chain 621 surrounding the guide plate 641. The guide plate 641 provides support and guides the saw chain 621. The top handle 63 is for the user to grip. The cutting assembly 62 is located on the front side of the housing 1 along the length of the chainsaw 100; the battery pack mounting section 101 is located on the rear side of the housing 1 along the length of the chainsaw 100; and the top handle 63 is located above the housing 1 along the height of the chainsaw 100.

[0244] It needs to be explained, such as Figure 1 As shown, the length extension direction L1 of the chainsaw 100 is the length extension direction of the guide plate 641, the height extension direction H1 of the chainsaw 100 is the height extension direction of the guide plate 641, and the width extension direction W1 of the chainsaw 100 is the thickness extension direction of the guide plate 641.

[0245] The top handle 63 includes a top handle housing 631, with at least a portion of the trigger 33 and the locking tongue 31 disposed within the top handle housing 631. It can be understood that by movably mounting the locking tongue 31 and the trigger 33 on the housing 1, and mounting the locking tongue receiving portion 32 on the battery pack 2, the trigger 33 can be mounted on the top handle housing 631, facilitating the user's one-handed operation to unlock the battery pack 2.

[0246] It should be noted that the embodiments described above are free to be combined to form new embodiments, and therefore the embodiments already described above will not be repeated here.

[0247] 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 power tool, this application also provides a power tool, as described above. Figures 32 to 36 As shown, the device includes a housing 1 and a locking assembly 3. The housing 1 has a battery pack mounting section 101 for inserting and connecting a battery pack 2, which 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 33, which can drive the latch 31 to move relative to the latch receiving section 32.

[0248] The locking tongue receiving part 32 includes a first receiving part 3211 and a second receiving part 3212 arranged in the insertion direction; the locking tongue 31 engages with at least one of the first receiving part 3211 and the second receiving part 3212 to lock the battery pack 2 relative to the housing 1; the locking tongue 31 disengages from the first receiving part 3211 and the second receiving part 3212 to unlock the battery pack 2 relative to the housing 1.

[0249] The locking tongue 31 and the trigger 33 are movably disposed on one of the housing 1 and the battery pack 2, and the locking tongue receiving part 32 is disposed on the other of the housing 1 and the battery pack 2.

[0250] It is understandable that by setting two locking tongue receiving parts 32 arranged in the front and back in the insertion direction of the battery pack 2, when the trigger 33 is accidentally touched, causing the locking tongue 31 to disengage from one of the first receiving part 3211 and the second receiving part 3212, the user can immediately sense it and reset the unlocking component in time. This can effectively reduce the risk of the battery pack 2 being unlocked due to accidental touch and thus abnormally disengaging from the power tool, thereby improving the safety of use.

[0251] Reference Figure 1 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 width extending along the width axis W, a thickness extending along the thickness axis T, and a height extending along the height axis H. Both the trigger 33 and the latch 31 are located on one side of a plane P1 perpendicular to the thickness axis and passing through the midpoint of the thickness; or, both the trigger 33 and the latch 31 are located on one side of a plane P2 perpendicular to the width axis and passing through the midpoint of the width.

[0252] In one embodiment, all triggers 33 and all latches 31 are located on one side of a plane P1 that is perpendicular to the thickness axis and passes through the midpoint of the thickness; or, all triggers 33 and all latches 31 are located on one side of a plane P2 that is perpendicular to the width axis and passes through the midpoint of the width.

[0253] It is understandable that all trigger elements 33 and all locking tongues 31 are located on one side of plane P1, which is perpendicular to the thickness axis and passes through the midpoint of the thickness, or all trigger elements 33 and all locking tongues 31 are located on one side of plane P2, which is perpendicular to the width axis and passes through the midpoint of the width. This facilitates the operator to operate the trigger elements 33 with one hand to control the battery pack 2 to unlock relative to the housing 1. In addition, the fact that all trigger elements 33 and all locking tongues 31 are located on one side of plane P1 or plane P2 makes the structural design of the locking assembly 3 simpler and more compact, which is beneficial to reducing the size of the power tool and to the lightweight design of the power tool.

[0254] Reference Figure 3The battery pack 2 includes a battery pack housing 201, which includes a first outer contour surface 71 and a second outer contour surface 72. The first outer contour surface 71 and the second outer contour surface 72 are disposed opposite each other in a direction perpendicular to the insertion direction of the battery pack 2. At least a portion of the latch 31 or the latch receiving portion 32 is disposed on the first outer contour surface 71. The trigger 33 and the latch 31 are both located on one side of the second outer contour surface 72. In one embodiment, all triggers 33 and all latches 31 are located on one side of the second contour surface.

[0255] It is understandable that all triggers 33 and all locking tongues 31 are located on one side of the second contour surface, which makes it convenient for the operator to operate the triggers 33 with one hand to control the battery pack 2 to unlock relative to the housing 1. In addition, the fact that all triggers 33 and all locking tongues 31 are located on one side of the second contour surface makes the structural design of the locking assembly 3 simpler and more compact, which is conducive to reducing the size of the power tool and to the lightweight design of the power tool.

[0256] The power tool is configured such that, based on external force applied to the trigger 33, the locking bolt 31 moves a first travel distance and a second travel distance. The locking bolt 31 moves a first travel distance, disengaging from the first receiving part 3211, while the battery pack 2 remains locked relative to the housing 1. The locking bolt 31 moves a second travel distance, disengaging from the second receiving part 3212, thereby unlocking the battery pack 2 relative to the housing 1. Furthermore, the power tool is configured such that, based on external force applied to the trigger 33, the locking bolt 31 moves sequentially along the first travel distance and the second travel distance.

[0257] In one embodiment, the locking tongue 31 and the trigger 33 are movably disposed on the housing 1, and the first receiving part 3211 and the second receiving part 3212 are disposed on the battery pack 2.

[0258] In another embodiment, the locking tongue 31 and the trigger 33 are movably disposed on the battery pack 2, and the first receiving part 3211 and the second receiving part 3212 are disposed on the housing 1.

[0259] In one embodiment, refer to Figures 32 to 36 The locking assembly 3 includes only one latch 31. The latch 31 engages with the first receiving part 3211 to lock the battery pack 2 relative to the housing 1 in a first position; the latch 31 engages with the second receiving part 3212 to lock the battery pack 2 relative to the housing 1 in a second position. Furthermore, the battery pack 2 forms an electrical connection with the power tool only when the latch 31 engages with the first receiving part 3211.

[0260] In one embodiment, there is only one trigger 33, and one trigger 33 drives the locking tongue 31 to move a first travel distance or a second travel distance.

[0261] 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. This allows the battery pack 2 to slide to the position where the locking tongue 31 engages with the second receiving portion 3212 after the locking tongue 31 disengages from the first receiving portion 3211.

[0262] It is understood that the unlocking component includes only one trigger 33. The trigger 33 drives the locking tongue 31 to move a first travel distance, and the locking tongue 31 disengages from the first receiving part 3211. Alternatively, the trigger 33 drives the locking tongue 31 to move a second travel distance, and the locking tongue 31 disengages from the first receiving part 3211 and the second receiving part 3212, thereby unlocking the battery pack 2 relative to the housing 1.

[0263] As a specific example, refer to Figures 32 to 36 The locking assembly 3 includes a locking tongue 31, a trigger 33, a first receiving part 3211, and a second receiving part 3212. The locking tongue 31 engages with the first receiving part 3211, locking the battery pack 2 relative to the housing 1 in a first position; the locking tongue 31 engages with the second receiving part 3212, locking the battery pack 2 relative to the housing 1 in a second position. The trigger 33 drives the locking tongue 31 to move a first travel distance, disengaging the locking tongue 31 from the first receiving part 3211, and the battery pack 2 slides relative to the housing 1 from the first position to the second position, engaging the locking tongue 31 with the second receiving part 3212; the trigger 33 continues to drive the locking tongue 31 to move a second travel distance, disengaging the locking tongue 31 from the second receiving part 3212, thus unlocking the battery pack 2 relative to the housing 1. The locking tongue 31 and the trigger 33 are movably mounted on the housing 1, and the first receiving part 3211 and the second receiving part 3212 are mounted on the battery pack 2. All trigger elements 33 and all locking tongues 31 are located on one side of a plane P1 that is perpendicular to the thickness axis and passes through the midpoint of the thickness. 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 first receiving part 3211 and the second receiving part 3212 are arranged on the first outer contour surface 71. All trigger elements 33 and all locking tongues 31 are located on one side of the second outer contour surface 72. Furthermore, all trigger elements 33, all locking tongues 31, and all locking tongue receiving parts 32 are located on one side of the second outer contour surface 72.

[0264] As another specific example (not shown), the locking assembly 3 includes two locking tongues 31, a trigger 33, and a first receiving part 3211 and a second receiving part 3212. The two locking tongues 31 are the first locking tongue 3111 and the second locking tongue 3112, respectively. The first locking tongue 3111 engages with the first receiving part 3211, and the second locking tongue 3112 engages with the second receiving part 3212. The trigger 33 first moves the first locking tongue 3111 a first travel distance, disengaging the first locking tongue 3111 from the first receiving part 3211. The trigger 33 then moves the second locking tongue 3112 a second travel distance, disengaging the second locking tongue 3112 from the second receiving part 3212, thereby unlocking the battery pack 2 relative to the housing 1. The first locking tongue 3111, the second locking tongue 3112, and the trigger 33 are movably mounted on the housing 1, and the first receiving part 3211 and the second receiving part 3212 are mounted on the battery pack 2. All trigger elements 33 and all locking tongues 31 are located on one side of a plane P1 that is perpendicular to the thickness axis and passes through the midpoint of the thickness. 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 first receiving part 3211 and the second receiving part 3212 are arranged on the first outer contour surface 71. All trigger elements 33 and all locking tongues 31 are located on one side of the second outer contour surface 72. Furthermore, all trigger elements 33, all locking tongues 31, and all locking tongue receiving parts 32 are located on one side of the second outer contour surface 72.

[0265] In one embodiment, refer to Figure 1 The power tool is a chainsaw 100, which includes a cutting assembly 62 and a top handle 63. The cutting assembly 62 is mounted on a housing 1 and includes a guide plate 641 and a saw chain 621 surrounding the guide plate 641. The guide plate 641 provides support and guides the saw chain 621. The top handle 63 is for the user to grip. The cutting assembly 62 is located on the front side of the housing 1 along the length of the chainsaw 100; the battery pack mounting section 101 is located on the rear side of the housing 1 along the length of the chainsaw 100; and the top handle 63 is located above the housing 1 along the height of the chainsaw 100.

[0266] It needs to be explained, such as Figure 1 As shown, the length extension direction L1 of the chainsaw 100 is the length extension direction of the guide plate 641, the height extension direction H1 of the chainsaw 100 is the height extension direction of the guide plate 641, and the width extension direction W1 of the chainsaw 100 is the thickness extension direction of the guide plate 641.

[0267] The top handle 63 includes a top handle housing 631, with at least a portion of the trigger 33 and the locking tongue 31 disposed within the top handle housing 631. It can be understood that by movably mounting the locking tongue 31 and the trigger 33 on the housing 1, and mounting the locking tongue receiving portion 32 on the battery pack 2, the trigger 33 can be mounted on the top handle housing 631, facilitating the user's one-handed operation to unlock the battery pack 2.

[0268] It should be noted that the embodiments described above are free to be combined to form new embodiments, and therefore the embodiments already described above will not be repeated here.

[0269] In one specific embodiment, refer to Figures 1 to 3 The power tool includes a housing 1 and a locking assembly 3. The housing 1 has a battery pack mounting section 101 for inserting and connecting a battery pack 2, which 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 33.

[0270] The locking tongue 31 and the trigger 33 are movably disposed on one of the housing 1 and the battery pack 2, and the locking tongue receiving part 32 is disposed on the other of the housing 1 and the battery pack 2. When the locking tongue 31 engages with the locking tongue receiving part 32, the battery pack 2 is locked relative to the housing 1; when the locking tongue 31 disengages from the locking tongue receiving part 32, the battery pack 2 is unlocked relative to the housing 1.

[0271] The power tool is configured such that an external force is applied 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 part 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0272] It is understood that the at least two different actions generated by the trigger 33 are actions caused by external forces applied to the trigger 33, such as actions caused by an operator applying force to the trigger 33. The trigger 33 is the object to which the external force is applied; of course, the object of the force application includes, but is not limited to, the operator, and can also be other objects. The methods of applying the force include direct contact operation, indirect operation to transmit the force to the trigger 33, etc., but are not limited to these.

[0273] At least two different actions of the trigger 33 are required to unlock the battery pack 2 relative to the housing 1. In other words, a single action is insufficient to unlock the battery pack 2 relative to the housing 1. The external force that causes accidental contact usually only causes the trigger 33 to produce a single action. Therefore, unlocking the battery pack 2 relative to the housing 1 by using at least two different actions of the trigger 33 can effectively reduce the risk of the battery pack 2 being unlocked due to accidental contact.

[0274] Reference Figure 1The 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 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 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.

[0275] Optionally, all trigger elements 33 and all locking tongues 31 are located on one side of a plane P1 that is perpendicular to the thickness axis and passes through the midpoint of the thickness; or, all trigger elements 33 and all locking tongues 31 are located on one side of a plane P2 that is perpendicular to the width axis and passes through the midpoint of the width. Further optionally, all trigger elements 33, all locking tongues 31, and all locking tongue receiving parts 32 are located on one side of a plane P1 that is perpendicular to the thickness axis and passes through the midpoint of the thickness; or, all trigger elements 33, all locking tongues 31, and all locking tongue receiving parts 32 are located on one side of a plane P2 that is perpendicular to the width axis and passes through the midpoint of the width.

[0276] It should be noted that the battery pack housing 201 extends along the width axis W, thickness axis T, and height axis H. The battery pack housing 201 is not limited to a standard cuboid; it can be other irregular shapes, such as chamfered edges, partial surface recesses or protrusions, etc. The width axis W, thickness axis T, and height axis H directions are only used to describe the approximate extension directions of the battery pack housing 201. Specifically, the width of the battery pack housing 201 is the line segment between the two outermost points on two opposite surfaces of the battery pack 2 along the width axis W and the perpendiculars to the same width axis W; the midpoint of the width is the midpoint of this line segment. The thickness of the battery pack housing 201 is the line segment between the two outermost points on two opposite surfaces of the battery pack 2 along the thickness axis T and the perpendiculars to the same thickness axis T; the midpoint of the thickness is the midpoint of this line segment. The height of the battery pack housing 201 is the line segment between the two outermost points on two opposite surfaces of the battery pack 2 along the height axis H and the perpendiculars to the same height axis H.

[0277] It is understandable that all trigger elements 33 are located on one side of plane P1 or plane P2, making it convenient for the operator to operate the trigger elements 33 with one hand to control the battery pack 2 to unlock relative to the housing 1. Having more components among all trigger elements 33, all locking tongues 31, and all locking tongue receiving parts 32 located on the same side of plane P1, which is perpendicular to the thickness axis and passes through the midpoint of the thickness, makes the structural design of the locking assembly 3 simpler and more compact, which is beneficial for reducing the size of the power tool and for its lightweight design.

[0278] Reference Figure 3 The battery pack 2 includes a battery pack housing 201, which includes a first outer contour surface 71 and a second outer contour surface 72. The first outer contour surface 71 and the second outer contour surface 72 are arranged opposite each other in a direction perpendicular to the insertion direction of the battery pack 2. At least a portion of the latch 31 or the latch receiving portion 32 is disposed on the first outer contour surface 71, and all triggers 33 are located on one side of the second outer contour surface 72. When the power tool is configured as a chainsaw 100, the chainsaw 100 includes a cutting assembly 62 mounted on the housing 1. The cutting assembly 62 includes a guide plate 641 and a saw chain 621 disposed around the guide plate 641. The guide plate 641 provides support and guides the saw chain 621. The battery pack 2 is inserted into the battery pack mounting part 101 in a manner that the first outer contour surface 71 and the second outer contour surface 72 of the battery pack 2 are spaced apart and opposite to each other along a first direction perpendicular to the plane where the guide plate 641 is located. At least a portion of the latch 31 or the latch receiving part 32 is disposed on the first outer contour surface 71. One or more trigger elements 33 are located on one side of the second outer contour surface 72, or

[0279] The battery pack 2 is inserted into the battery pack mounting part 101 in a manner that the first outer contour surface 71 and the second outer contour surface 72 of the battery pack 2 are spaced apart and arranged opposite each other along a second direction parallel to the plane where the guide plate 641 is located. At least a portion of the latch 31 or the latch receiving part 32 is disposed on the first outer contour surface 71. One or more triggers 33 are located on one side of the second outer contour surface 72.

[0280] Furthermore, the chainsaw 100 is configured as a tree-mounted chainsaw 100. The chainsaw 100 also includes a top handle 63 for the user to hold; a cutting assembly 62 is disposed on the front side of the housing 1 in the length extension direction of the chainsaw 100; a battery pack mounting part 101 is disposed on the rear side of the housing 1 in the length extension direction of the chainsaw 100; and the top handle 63 is disposed above the housing 1 in the height extension direction of the chainsaw 100.

[0281] The number of latches 31 can be one or more, and the number of latch receiving parts 32 that cooperate with one or more latches 31 can also be one or more; correspondingly, the number of triggers 33 can also be one or more.

[0282] In this embodiment, the locking assembly 3 includes a latch 31, a latch receiving part 32, and a trigger 33. The latch 31 and the trigger 33 are movably mounted on the housing 1, and the latch receiving part 32 is mounted on the battery pack 2. All triggers 33, all latches 31, and all latch receiving parts 32 are located on one side of a 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 arranged opposite to each other in the thickness direction of the battery pack 2. The latch receiving part 32 is located on the first outer contour surface 71, and all triggers 33, all latches 31, and all latch receiving parts 32 are located on one side of the second outer contour surface 72.

[0283] Based on the external force applied to the trigger 33, the trigger 33 generates at least two different actions, including: one action that causes the trigger 33 to move while the battery pack 2 remains locked relative to the housing 1; and another action that causes the trigger 33 to move and drive the locking tongue 31 to move, thereby unlocking the battery pack 2 relative to the housing 1. For ease of explanation, one action is referred to as the first action, and the other action as the second action.

[0284] It should be noted that the first action and the second action are only used to represent two different actions. The first and second actions do not limit the order of the two actions, nor do they limit the continuity of the two actions. For example, there can be other actions in between the two actions.

[0285] It is understandable that the first action of trigger 33 does not unlock the battery pack 2 relative to the housing 1, while the second action of trigger 33 unlocks the battery pack 2 relative to the housing 1. In other words, the battery pack 2 can only be unlocked relative to the housing 1 based on at least the first and second actions of trigger 33.

[0286] Based on the external force applied to the trigger 33, the trigger 33 generates at least two different actions, including: one action generated by the trigger 33, namely the first action, which causes the trigger 33 to move while the locking tongue 31 does not move; and another action generated by the trigger 33, namely the second action, which causes the trigger 33 to move and drives the locking tongue 31 to move.

[0287] The locking assembly 3 also includes a latch linkage 34. One action generated by the trigger 33, namely the first action, puts the trigger 33 in a position that allows the latch 31 to move. Another action generated by the trigger 33, namely the second action, moves the latch linkage 34 and causes the latch 31 to move relative to the latch receiving part 32.

[0288] It should be noted that the position where the trigger 33 is in a position that allows the bolt 31 to move should be understood as: the user can directly apply force to the trigger 33 to make the trigger 33 move without any other action, and the movement of the trigger 33 can drive the bolt 31 to move.

[0289] The latch linkage 34 is configured to move under the influence of the trigger 33, thereby moving the latch 31. The trigger 33 is movably positioned relative to the latch linkage 34 and can abut against it. The latch linkage 34 is movably positioned relative to the latch 31 and can abut against it; alternatively, the latch linkage 34 and the latch 31 are fixedly connected. The latch linkage 34 pivots about a fixed pivot axis.

[0290] Reference Figures 3 to 8 The locking assembly 3 also includes a latch linkage 34. A trigger 33 pivots about a pivot axis. The first action of the trigger 33 moves the trigger 33 to a position abutting against the latch linkage 34. The second action of the trigger 33 causes the trigger 33 to move the latch linkage 34, thereby causing the latch 31 to move and disengage from the latch receiving part 32. In this embodiment, the first action of the trigger 33 causes the trigger 33 to move, while the latch 31 does not move.

[0291] The latch linkage 34 is pivotally mounted on the housing 1 or the battery pack housing 201 around the first pivot 335; the latch linkage 34 includes a latch abutting part 341 and a trigger abutting part 342; the trigger 33 is movably mounted on the housing 1 or the battery pack housing 201 and can move to abut against the trigger abutting part 342 and drive the latch linkage 34 to pivot around the first pivot 335; the latch abutting part 341 is configured to abut against the latch 31 and drive the latch 31 to move away from the latch receiving part 32.

[0292] The trigger element 33 is pivotally connected to the housing 1 or the battery pack housing 201 about the second pivot 336, or the trigger element 33 is pivotally connected to the latch linkage 34 about the second pivot 336. The first action of the trigger element 33 causes the trigger element 33 to pivot about the second pivot 336 until it abuts against the latch linkage 34. The second action of the trigger element 33 causes the trigger element 33 to move and drive the latch linkage 34 to pivot about the first pivot 335, and the latch linkage 34 drives the latch 31 to move and disengage from the latch receiving part 32. In this embodiment, the trigger element 33 is pivotally connected to the latch linkage 34 about the second pivot 336.

[0293] There is only one trigger 33. One action, namely the first action, is generated by one trigger 33, which makes the trigger 33 move and the battery pack 2 is not unlocked relative to the housing 1. Another action, namely the second action, is generated by one trigger 33, which makes the trigger 33 move and drives the locking tongue 31 to move so that the battery pack 2 is unlocked relative to the housing 1.

[0294] There is only one trigger 33, and at least two different actions are generated sequentially from one trigger 33.

[0295] 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.

[0296] In this embodiment, the first action of the trigger 33 is to move the trigger 33 while keeping the locking tongue 31 stationary, and the battery pack 2 remains locked relative to the housing 1; the second action of the trigger 33 is to move the locking tongue 31, causing it to disengage from the locking tongue receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1. The first and second actions are generated sequentially by one trigger 33.

[0297] In one embodiment, one action of the trigger 33 causes the trigger 33 to move along a first stroke trajectory; another action of the trigger 33 causes the trigger 33 to move along a second stroke trajectory different from the first stroke trajectory. The power tool is configured such that the battery pack 2 is unlocked relative to the housing 1 based at least on the first and second stroke trajectories. The first and second stroke trajectories of the trigger 33 are not on a straight line.

[0298] It should be noted that the travel trajectory can be the movement trajectory of any point on the trigger 33. The first travel trajectory and the second travel trajectory are not on the same straight line. They can be non-linear; they can both be straight lines with different directions; they can both be straight lines, parallel and non-overlapping; or they can be other forms, not limited to these.

[0299] It is understandable that the first and second stroke trajectories are not on the same straight line, which means that applying a force in one direction to the trigger 33 cannot unlock the battery pack 2 relative to the housing 1. The external force that causes accidental contact can usually only apply a force in one direction. Therefore, the risk of the battery pack 2 being unlocked due to accidental contact can be effectively reduced.

[0300] There is only one trigger 33, and the first stroke trajectory and the second stroke trajectory are generated by the sequential movement of the same trigger 33; or there are at least two triggers 33, and the first stroke trajectory and the second stroke trajectory are generated by the movement of different triggers 33. The first stroke trajectory and the second stroke trajectory are in different directions or parallel.

[0301] In this embodiment, as shown in the figure, the locking component 3 includes only one trigger 33. The first travel trajectory and the second travel trajectory are generated by the sequential movement of the trigger 33. Specifically, the trigger 33 pivots around a pivot axis, and moves along the first travel trajectory to a position that can move the bolt 31. The trigger 33 then continues to move along the second travel trajectory, causing the bolt 31 to move and disengage from the bolt receiving part 32. In this embodiment, because the trigger 33 pivots, both the first and second travel trajectories are arcs and do not overlap.

[0302] In related technologies, to address the technical problem of accidental unlocking of the battery pack 2 in power tools, leading to its abnormal detachment from the power tool, two pairs of interlocking mechanisms are installed between the battery pack 2 and the power tool's housing 1. Specifically, the power tool has two locking tongues 31, two locking tongue receiving parts 32 that respectively cooperate with the two locking tongues 31, and two triggering elements 33 for controlling the movement of the two locking tongues 31. However, conventional battery packs 2 typically only have one locking tongue receiving part 32. This makes the power tool incompatible with existing battery pack 2 platforms and unable to implement the function of preventing accidental unlocking of the battery pack 2.

[0303] In one embodiment, the latch 31 and the trigger 33 are both movably disposed on the housing 1, and the latch receiving part 32 is disposed on the battery pack 2. There is only one latch receiving part 32, and the latch receiving part 32 is configured to engage with at least one latch 31.

[0304] In this embodiment, the locking component 3 includes a latch 31, a latch receiving part 32, and a trigger 33. Based on an external force applied to the trigger 33, the trigger 33 performs a first action, causing the trigger 33 to move while the latch 31 remains stationary, and the battery pack 2 remains locked relative to the housing 1. Based on the external force applied to the trigger 33, the trigger 33 performs a second action, causing the trigger 33 to move and disengage the latch 31 from the latch receiving part 32, thus unlocking the battery pack 2 relative to the housing 1.

[0305] This embodiment has only one locking tongue receiving part 32. By applying force to the trigger 33, the trigger 33 can produce at least two different actions to unlock the battery pack 2 relative to the housing 1. This can effectively reduce the risk of the battery pack 2 being unlocked due to accidental contact and is compatible with existing battery packs 2 that only have one locking tongue receiving part 32.

[0306] The chainsaw 100 used for tree work is typically intended for use by users when working in trees. The working environment is relatively complex, and users usually hang the chainsaw 100 on their body when climbing trees. During the climbing process, the chainsaw 100 will sway. Therefore, during the user's climbing and tree work, the unlock button of the battery pack 2 may touch the branches or the user's body, which may cause the battery pack 2 to be accidentally unlocked, causing the battery pack 2 to detach abnormally from the chainsaw 100, causing injury to people or animals in the vicinity, or damaging property, posing a significant safety hazard.

[0307] In this embodiment, the power tool is a chainsaw 100, which includes a cutting assembly 62 and a top handle 63. The cutting assembly 62 is mounted on the housing 1 and includes a guide plate 641 and a saw chain 621 surrounding the guide plate 641. The guide plate 641 provides support and guides the saw chain 621. The top handle 63 is for the user to hold. The cutting assembly 62 is located on the front side of the housing 1 along the length extension direction of the chainsaw 100; the battery pack mounting part 101 is located on the rear side of the housing 1 along the length extension direction of the chainsaw 100; and the top handle 63 is located above the housing 1 along the height extension direction of the chainsaw 100.

[0308] It needs to be explained, such as Figure 1 As shown, the length extension direction L1 of the chainsaw 100 is the length extension direction of the guide plate 641, the height extension direction H1 of the chainsaw 100 is the height extension direction of the guide plate 641, and the width extension direction W1 of the chainsaw 100 is the thickness extension direction of the guide plate 641.

[0309] The top handle 63 includes a top handle housing 631, with at least a portion of the trigger 33 and the locking tongue 31 disposed within the top handle housing 631. It can be understood that by movably mounting the locking tongue 31 and the trigger 33 on the housing 1, and mounting the locking tongue receiving portion 32 on the battery pack 2, the trigger 33 can be mounted on the top handle housing 631, facilitating the user's one-handed operation to unlock the battery pack 2.

[0310] In this embodiment of the power tool, when the user needs to disassemble the battery pack 2, the battery pack 2 must first be unlocked. Unlocking the battery pack 2 specifically includes the following steps:

[0311] Step 1: The trigger element 33 is in its initial position without any external force, i.e. Figure 6 In the state shown, the user applies an upward flipping force to the operating end 3311 of the trigger 33, causing the trigger 33 to pivot around the second pivot 336 until it abuts against the trigger contact portion 342 of the latch linkage 34, i.e. Figure 7 The state shown;

[0312] Step 2: Further push the operating end 3311 of the trigger 33. The movement of the trigger 33 drives the latch linkage 34 to pivot around the first pivot 335. This causes the latch abutment portion 341 of the latch linkage 34 to push the latch 31, which it abuts against, until the protrusion 311 of the latch 31 disengages from the recess 321 of the lock groove. Figure 8 In the state shown, the battery pack 2 is unlocked relative to the housing 1, and the battery pack 2 can be separated from the power tool;

[0313] Step 3: After the battery pack 2 is separated from the power tool, the user releases the trigger 33, for example, by loosening his finger and not applying any force to the trigger 33. At this time, the latch 31 will be reset under the force of the latch elastic reset member 36, and the trigger 33 will be reset under the force of the trigger 33 reset member, so that the locking component 33 returns to its initial state.

[0314] It should be noted that the embodiments described above are free to be combined to form new embodiments, and therefore the embodiments already described above will not be repeated here.

[0315] The following is a detailed description of the specific structure in an implementation scheme where there is only one trigger element 33:

[0316] Reference Figure 4 and Figure 5 The locking assembly 33 includes a latch 31, a latch receiving portion 32, and a trigger 33. The latch 31 and the trigger 33 (which may be referred to as the triggering mechanism) are movably disposed on one of the housing 1 and the battery pack housing 201, and the latch receiving portion 32 is disposed on the other of the housing 1 and the battery pack housing 201. The latch 31 can engage with the latch receiving portion 32 to lock the battery pack 2 relative to the housing 1. The trigger 33 can act on the latch 31 and move the latch 31 in conjunction with it, and the trigger 33 is configured to control the latch 31 to disengage from the latch receiving portion 32 based on at least two unlocking actions applied to the trigger 33, thereby unlocking the battery pack 2 relative to the housing 1.

[0317] The unlocking action is configured to apply a force to the trigger 33, causing the trigger 33 to move. The at least two unlocking actions applied to the trigger 33 include two unlocking actions with different directions of force applied to the trigger 33 at least within a portion of the movement stroke, or two unlocking actions with the same direction of force applied intermittently.

[0318] It should be noted that the two unlocking actions applied intermittently to the trigger 33 should be understood as follows: the two unlocking actions cannot be applied to the trigger 33 continuously and evenly, and intermittent operation is required. As an example, the two unlocking actions are progressive, and the subsequent unlocking action can only be applied after the previous unlocking action is completed.

[0319] The latch receiving part 32 includes at least one stop space that can engage with the latch 31 and stop the latch 31; applying at least two unlocking actions to the trigger 33 can cause the latch 31 to move and disengage from the stop space of the latch receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0320] It is understandable that the disengagement of the latch 31 from the latch receiving part 32 can be achieved by the latch 31 disengaging from all the stop spaces of the latch receiving part 32.

[0321] The battery pack 2 and the battery pack mounting part 101 include multiple sets of mating surfaces located on different sides of the battery pack 2, and a locking component 33 is provided on one set of mating surfaces.

[0322] Users must apply at least two unlocking actions to the trigger 33 to unlock the battery pack 2 relative to the housing 1. Therefore, the risk of accidental unlocking of the battery pack 2 can be effectively reduced, thereby reducing the risk of injury to people or objects in the surrounding work environment and effectively minimizing safety hazards.

[0323] Furthermore, the locking assembly 33 also includes a latch elastic reset member 36, which acts on the latch 31 to apply a force to the latch 31, causing it to move toward the latch receiving portion 32. As an example, the latch elastic reset member 36 can be a spring.

[0324] The locking assembly 33 also includes a latch linkage 34. Both the trigger 33 and the latch linkage 34 are movably configured, and the latch linkage 34 can drive the latch 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 have a first stroke and a second stroke. The first stroke is configured to move the trigger 33 to a position where the latch linkage 34 can be triggered; the second stroke is configured to move the latch linkage 34 through the movement of the trigger 33, thereby moving the latch 31 until the latch 31 disengages from the latch receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1. The directions of the forces applied to the trigger 33 during the first stroke and the second stroke are different within at least a portion of the movement stroke.

[0325] Furthermore, the trigger 33 also includes a trigger elastic reset member 334. The trigger 33 is in an initial position when it is not subjected to an unlocking action. The trigger elastic reset member 334 acts on the trigger 33 to apply a force to the trigger 33 to move it toward the initial position.

[0326] In one embodiment, the latch linkage 34 is pivotally mounted on the housing 1 or the battery pack housing 201 about a first pivot 335. The latch linkage 34 includes a latch abutment portion 341 and a trigger abutment portion 342. The trigger abutment portion 342 and the latch abutment portion 341 pivot synchronously about the first pivot 335. The trigger 33 is movably mounted on the housing 1 or the battery pack housing 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 335. The latch abutment portion 341 is used to abut against the latch 31 and pivot with the trigger abutment portion 342 about the first pivot 335, thereby driving the latch 31 to move away from the latch receiving portion 32. Specifically, the latch linkage 34 has a through shaft hole 343 through which the first pivot 335 passes, and the latch linkage 34 is pivotally mounted on the first pivot 335 through the through shaft hole 343.

[0327] It is understood that the latch linkage 34 can be a one-piece structure, on which the latch abutment portion 341 and the trigger abutment portion 342 are formed in different directions. The latch linkage 34 can also include two separate components, on which the latch abutment portion 341 and the trigger abutment portion 342 are formed respectively, and the two separate components are synchronously linked by abutment engagement.

[0328] Furthermore, the latch abutment portion 341 and the trigger abutment portion 342 are located on opposite sides of a plane passing through the pivot axis of the first pivot 335 and parallel to the direction of movement of the latch 31. Preferably, the angle between the extending direction of the latch abutment portion 341 and the extending direction of the trigger abutment portion 342 is 90° to 180°.

[0329] In one embodiment, the trigger 33 is configured such that both a first unlocking action and a second unlocking action are applied to the trigger 33. The first stroke is configured to move the trigger 33 to abut against the latch linkage 34; the second stroke is configured to move the trigger 33 further and drive the latch linkage 34 to move, and the latch linkage 34 drives the latch 31 to move until the latch 31 disengages from the latch receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0330] In one embodiment, the latch linkage 34 is movably disposed relative to the latch 31 and can abut against the latch 31. It is understood that the latch linkage 34 and the latch 31 are two independent components.

[0331] In one embodiment, the latch 31 is provided with a stop 312 for abutting against the latch linkage 34. The latch 31 is also provided with a reset member mounting part 313, one end of the latch elastic reset member 36 is attached to the reset member mounting part 313, and the other end abuts against the housing 1 or the battery pack housing 201.

[0332] Furthermore, the latch 31 is provided with a groove 314 into which the latch abutment portion 341 of the latch linkage 34 extends to limit its pivoting direction. A reset member mounting portion 313 is at least partially disposed within the groove 314. The groove 314 has an opening in the middle of its side wall away from the protrusion 311 for the latch elastic reset member 36 to extend out. The side walls form the aforementioned retaining walls 312 for abutting against the latch linkage 34. As an example, the latch elastic reset member 36 is a spring, and the reset member mounting portion 313 is a column fixed within the groove 314 with a gradually narrowing head, allowing the spring to be sleeved and engaged with the front end of the column. By placing the reset member mounting portion 313 within the groove 314, the latch 31 structure becomes more compact and smaller in size.

[0333] In one embodiment, the locking tongue 31 and the trigger 33 are disposed on the housing 1, and the locking tongue receiving part 32 is disposed on the battery pack 2; the housing 1 is provided with a through hole for the locking tongue 31 to extend into the battery pack mounting part 101.

[0334] In another embodiment, the latch 31 and the trigger 33 are disposed on the battery pack housing 201, and the latch receiving part 32 is disposed on the housing 1; the battery pack housing 201 is provided with a through hole for the latch 31 to extend into the battery pack mounting part 101.

[0335] The latch receiving part 32 is a lock groove or lock hole provided in the housing 1 or the battery pack housing 201. It can be understood that the lock groove or lock hole constitutes the stopping space of the latch receiving part 32 that can stop the latch 31.

[0336] The latch 31 includes at least one protrusion 311, and the latch receiving portion 32 includes at least one recess 321. The protrusion 311 of the latch 31 engages with the recess 321 of the latch receiving portion 32, thereby locking the battery pack 2 relative to the housing 1. When the protrusion 311 of the latch 31 disengages from the recess 321 of the latch receiving portion 32, the battery pack 2 is unlocked relative to the housing 1.

[0337] It should be noted that in this embodiment, a trigger 33 should be understood as a single trigger 33, rather than a group of triggers 33. At least two unlocking actions are performed on the same trigger 33. Specifically, the two unlocking actions are performed on the trigger 33 sequentially.

[0338] As an example, the latch receiving part 32 includes a locking groove disposed on the housing 1 or the battery pack housing 201. The latch 31 includes a protrusion 311, and the locking groove includes a recess 321 that mates with the protrusion 311. The engagement of the protrusion 311 of the latch 31 with the recess 321 of the locking groove locks the battery pack 2 relative to the housing 1. That is, the protrusion 311 extends into the recess 321, locking the battery pack 2 relative to the housing 1 and preventing it from moving. The latch 31 and the latch receiving part 32 are unlocked, that is, the protrusion 311 of the latch 31 disengages from the recess 321 of the locking groove, allowing the battery pack 2 to move relative to the housing 1.

[0339] As another example, the latch receiving part 32 includes a locking groove disposed on the housing 1 or the battery pack housing 201. The latch 31 includes a plurality of protrusions 311, and the locking groove includes a plurality of recesses 321 that correspond one-to-one with the plurality of protrusions 311. It is understood that the latch 31 can be an integral structure, such as extending from a main body to form a plurality of protrusions 311, all of which move synchronously with the main body; the latch 31 can also include a plurality of discrete structures, each of which forms a protrusion 311, and the plurality of discrete structures are synchronously linked with the movement of the trigger 33, that is, the protrusions 311 of the plurality of discrete structures synchronously engage with the plurality of recesses 321 of the locking groove to lock the battery pack 2, or synchronously disengage from the plurality of recesses 321 of the locking groove to unlock the battery pack 2.

[0340] As another example, the latch receiving part 32 includes a locking groove disposed on the housing 1 or the battery pack housing 201. The latch 31 includes one or more protrusions 311, and the locking groove includes one or more recesses 321 that mate with the one or more protrusions 311. The protrusions 311 and the recesses 321 are not in a one-to-one correspondence. For example, the latch 31 may include multiple pawls, and the locking groove may include a ratchet groove that mates with the multiple pawls; or a protrusion 311 may sequentially engage multiple locking grooves, etc., which will not be listed here.

[0341] Furthermore, for a latch 31 with a single protrusion 311, the trigger 33 controls the battery pack 2 to unlock in the following ways: First, the first unlocking action of the trigger 33 does not move the protrusion 311; second, the second unlocking action of the trigger 33 causes the protrusion 311 to disengage from the recess 321. Alternatively, the first unlocking action of the trigger 33 first partially disengages the protrusion 311 from the recess 321, and then the second unlocking action of the trigger 33 completely disengages the protrusion 311 from the recess 321. For a latch 31 with multiple protrusions 311, the trigger 33 controls the battery pack 2 to unlock in the following ways: multiple protrusions 311 of the latch 31 simultaneously disengage from the recess 321; or multiple protrusions 311 of the latch 31 act sequentially, disengaging from the recess 321 sequentially. Other methods are also possible, which will not be listed here.

[0342] It should be noted that the trigger 33 should be understood as being able to disengage all the protrusions 311 of the latch 31 from all the recesses 321 of the latch receiving part 32, thereby unlocking the battery pack 2. The cooperation structure between the latch 31 and the latch receiving part 32 in this application is not limited to this, and can be any structure that can be unlocked by the same trigger 33, which is not limited here.

[0343] In one embodiment, the trigger 33 is pivotally connected to the housing 1 or the battery pack housing 201 about a second pivot 336; or the trigger 33 is pivotally connected to the latch linkage 34 about a second pivot 336. The first unlocking action is configured to flip the trigger 33 so that it pivots about the second pivot 336 to abut against the latch linkage 34; the second unlocking action is configured to further push the trigger 33, causing the trigger 33 to move and drive the latch linkage 34 to pivot about a first pivot 335, and the latch linkage 34 drives the latch 31 to move until the latch 31 disengages from the latch receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0344] As an example, the trigger 33 is pivotally connected about the second pivot 336 to the trigger abutment 342 of the latch linkage 34.

[0345] Furthermore, the trigger elastic reset member 334 is a torsion spring that is snapped between the trigger member 33 and the housing 1 or the battery pack housing 201.

[0346] The housing 1 or battery pack housing 201 is provided with a trigger 33 mounting slot 4. The trigger 33 is mounted in the trigger 33 mounting slot 4 and does not protrude from the housing 1 or battery pack housing 201. This structure makes it difficult for the trigger 33 to be accidentally activated. Furthermore, 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 42 for the trigger 33 to extend into the housing 1 or battery pack housing 201, and an operating gap 43 is left between the end of the trigger 33 used to apply the unlocking action and the trigger 33 mounting slot.

[0347] Reference 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 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 groove 52 is provided on one of the battery pack 2 and the battery pack mounting part 101, and the slide rail 51 that guides and cooperates with the groove 52 is provided on the other. The battery pack 2 is guided and moved to the battery pack mounting part 101 through the cooperation of the groove 52 and the slide rail 51.

[0348] It is understood that the power tools of this application can be chainsaws 100, lawnmowers, hair dryers, pruning machines, etc., powered by battery pack 2. As an example, the power tool can be chainsaws 100, and further, the power tool can be a tree chainsaw 100.

[0349] The tree chainsaw 100 is a chainsaw used in tree operations. The working environment is relatively complex. When climbing a tree, the user hangs the chainsaw 100 on their body. During the climbing process, the chainsaw 100 will sway. Therefore, during the user's climbing and tree operations, the unlock button of the battery pack 2 may touch a branch or come into contact with the user's body. This may cause the battery pack 2 to be accidentally unlocked, causing it to detach abnormally from the chainsaw 100, which may cause injury to people or animals in the vicinity, or damage to property, posing a significant safety hazard.

[0350] Reference Figures 1 to 3 In this embodiment, a tree chainsaw 100 is used as an example of a power tool. The power tool includes a housing 1, a battery pack 2, and a locking assembly 33. The housing 1 is provided with a battery pack mounting part 101, and the battery pack 2 is detachably attached to the battery pack mounting part 101. The battery pack 2 is used to provide power to the power tool, and the battery pack 2 includes a battery pack housing 201.

[0351] Reference Figure 4 and Figure 5The locking assembly 33 includes a latch 31, a latch receiving portion 32, a trigger 33, and a latch resilient reset member 36. The latch receiving portion 32 is configured as a lock groove. The latch 31 includes a protrusion 311, and the lock groove includes a recess 321. The protrusion 311 of the latch 31 can engage with the recess 321 of the lock groove, thereby locking the battery pack 2 relative to the housing 1. As an example, the latch 31 and the trigger 33 are movably disposed on the housing 1, and the lock groove is disposed on the battery pack housing 201. Specifically, the housing 1 has a receiving cavity 102 for accommodating the latch 31 and the trigger 33, and the receiving cavity 102 has a through hole 1021 for the latch 31 to extend into the battery pack mounting portion 101. The latch resilient reset member 36 acts on the latch 31 to apply a force toward the lock groove.

[0352] The battery pack 2 and the battery pack mounting part 101 include multiple sets of mating surfaces located on different sides of the battery pack 2, and a locking component 33 is provided on one set of mating surfaces. As an example, the battery pack mounting part 101 is a battery pack 2 receiving chamber with an opening at the top. The power tool includes a working head, with the side of the battery pack 2 closer to the working head of the power tool as the front side and the side of the battery pack 2 away from the working head of the power tool as the rear side. Taking a tree chainsaw 100 as an example, the working head of the tree chainsaw 100 is its cutting component 62. Specifically, the battery pack mounting part 101 semi-encloses the battery pack 2, and the battery pack mounting part 101 has an opening at the top. The battery pack 2 and the battery pack mounting part 101 include five sets of mating surfaces located on the front, rear, left, right, and bottom sides of the battery pack 2. The locking component 33 is provided on the set of mating surfaces located on the front side of the battery pack 2.

[0353] Reference Figures 6 to 8The trigger element 33 acts on the latch 31 and moves the latch 31 in conjunction with it. The trigger element 33 includes a trigger element 33, a latch linkage element 34, and a trigger element elastic reset element 334. Both the trigger element 33 and the latch linkage element 34 are movably disposed, and the latch linkage element 34 can drive the latch 31 to move. Specifically, the latch linkage element 34 is pivotally disposed on the housing 1 about a first pivot 335. The latch linkage element 34 includes a latch abutment portion 341 and a trigger element abutment portion 342, and the trigger element abutment portion 342 and the latch abutment portion 341 pivot synchronously about the first pivot 335. The trigger element 33 is pivotally connected to the trigger element abutment portion 342 of the latch linkage 34 about the second pivot 336, and can move to abut against the trigger element abutment portion 342 and drive the trigger element abutment portion 342 to pivot about the first pivot 335. The latch abutment portion 341 is used to abut against the latch 31 and pivots with the trigger element abutment portion 342 about the first pivot 335, thereby driving the latch 31 to move away from the lock groove. The trigger element 33 includes an initial position in its state where no unlocking action is applied, and the trigger element elastic reset member 334 acts on the trigger element 33 to apply a force to the trigger element 33 to move it toward the initial position. As an example, the first pivot 335 is fixedly mounted on the housing 1, and the trigger element elastic reset member 334 is a torsion spring that is engaged between the trigger element 33 and the housing 1.

[0354] The latch abutment portion 341 and the trigger abutment portion 342 are located on opposite sides of a plane passing through the pivot axis of the first pivot 335 and parallel to the direction of movement of the latch 31. Preferably, the angle between the extending direction of the latch abutment portion 341 and the extending direction of the trigger abutment portion 342 is 90° to 180°. More preferably, the angle between the extending direction of the latch abutment portion 341 and the extending direction of the trigger abutment portion 342 is 150° to 180°.

[0355] Reference Figure 9 The latch abutment portion 341 includes an extension portion 341a disposed generally along its extending direction and an abutment portion 341b connected to the outer end of the extension portion 341a. The abutment portion 341b has a smoothly transitioned outer contour in the pivoting direction of the latch abutment portion 341. As an example, the latch abutment portion 341 may include two symmetrically arranged abutment portions 341b, which are connected as one unit by the extension portion 341a.

[0356] In this embodiment, the latch linkage 34 includes two separate components: an upper linkage 342a and a lower linkage 342b. The trigger abutment portion 342 is formed on the upper linkage 342a, and the latch abutment portion 341 is formed on the lower linkage 342b. The upper linkage 342a and the lower linkage 342b achieve synchronous linkage through abutment engagement. Specifically, the upper linkage 342a and the lower linkage 342b are pivotally connected to a first pivot 335. An upper boss 342a1 is formed on the outer edge of the upper linkage 342a, and a lower boss 342b1 is formed on the outer edge of the lower linkage 342b. The upper boss 342a1 and the lower boss 342b1 abut against each other through abutment surfaces arranged radially along the first pivot 335 to achieve synchronous linkage between the upper linkage 342a and the lower linkage 342b.

[0357] The trigger 33 is configured to control the protrusion 311 of the latch 31 to disengage from the recess 321 of the lock groove based on two unlocking actions applied to the trigger 33, thereby unlocking the battery pack 2 relative to the housing 1. The two unlocking actions include a first unlocking action and a second unlocking action, both of which act on the trigger 33. The first unlocking action is configured to flip the trigger 33 so that it pivots about the second pivot 336 until it abuts against the latch linkage 34; the second unlocking action is configured to further push the trigger 33, causing the trigger 33 to move and drive the latch linkage 34 to pivot about the first pivot 335. The latch linkage 34 drives the latch 31 to move until the protrusion 311 of the latch 31 disengages from the recess 321 of the lock groove. The directions of the forces applied to the trigger 33 corresponding to the first and second unlocking actions are different at least within a portion of the travel distance. In this embodiment, the direction of the force applied to the trigger 33 corresponding to the first unlocking action is approximately as follows: Figure 7 The direction of the force applied to the trigger 33 corresponding to the second unlocking action, as indicated by the middle arrow a, is approximately as follows: Figure 8 The direction indicated by the middle arrow b.

[0358] Reference Figures 6 to 8The housing 1 is provided with a trigger element 33 mounting slot 4. The trigger element 33 mounting slot 4 has a limiting groove wall 41 for limiting the movement range of the trigger element 33 and a slot hole 42 for the trigger element 33 to extend into the housing 1 so that the trigger element 33 abuts against the locking tongue linkage 34. An operating gap 43 is left between the end of the trigger element 33 used to apply the unlocking action and the trigger element 33 mounting slot 4. For ease of understanding, the end of the trigger element 33 used to apply the unlocking action is defined as the operating end 3311 of the trigger element 33, and the end of the trigger element 33 abutting against the locking tongue linkage 34 is defined as the trigger end 3312 of the trigger element 33. Specifically, the trigger element 33 mounting slot 4 is connected to the inside of the housing 1, that is, connected to the receiving cavity 102. When the trigger 33 is not being unlocked, under the action of the torsion spring, the operating end 3311 of the trigger 33 abuts against the upper part of the limiting groove wall 41, and the upper surface of the trigger 33 is basically flush with the surface of the housing 1. When the trigger 33 is being unlocked, the trigger 33 can pivot around the second pivot 336, and the trigger end 3312 of the trigger 33 extends into the housing 1 from the slot 42 and abuts against the locking tongue linkage 34. There is an operating gap between the operating end 3311 of the trigger 33 and the mounting slot 4 of the trigger 33, which allows the operator to insert his / her finger to perform a flip unlocking action on the trigger 33. The limiting groove wall 41 is recessed downward relative to the upper end of the mounting slot 4 of the trigger 33, and an operating gap 43 is formed between the operating end 3311 of the trigger 33, the limiting groove wall 41, and the mounting slot 4 of the trigger 33, which allows the operator to insert his / her finger. The operator's fingers can be inserted into the lower part of the trigger 33 from the front operating gap 43 of the operating end 3311 of the trigger 33, making it easier to flip the trigger 33 up.

[0359] Reference Figure 10 The latch 31 is provided with a groove 314 into which the latch abutment portion 341 of the latch linkage 34 extends to limit its pivoting direction. It also has a reset member mounting portion 313, with one end of the latch elastic reset member 36 attached to the reset member mounting portion 313 and the other end abutting against the housing 1. The latch abutment portion 341 of the latch linkage 34 includes two abutment portions 341b. The reset member mounting portion 313 is at least partially disposed within the groove 314. The groove 314 has an opening in the middle of its side wall away from the protrusion 311 for the latch elastic reset member 36 to extend out. Two baffles 312 are formed on both sides of the side wall for abutting against the two abutment portions 341b of the latch linkage 34. Specifically, the latch elastic reset member 36 is a spring, and the reset member mounting part 313 is a column that is fixed in the groove 314 and gradually narrows at the head, so that one end of the spring can be sleeved and locked at the front end of the column. The cross-section of the column is cross-shaped. A spring limiting groove 103 is provided at the corresponding position on the housing 1 to limit the other end of the spring.

[0360] 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.

[0361] 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.

[0362] 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.

[0363] 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.

[0364] When a user needs to disassemble battery pack 2, battery pack 2 must first be unlocked, which includes the following steps:

[0365] 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;

[0366] Step 1.2, the second unlocking action, involves further pushing the operating end 3311 of the trigger 33. The trigger end 3312 of the trigger 33 moves synchronously with the operating end 3311, causing the trigger abutment portion 342 of the latch linkage 34 to pivot around the first pivot 335. This, in turn, causes the latch abutment portion 341 of the latch linkage 34 to pivot synchronously around the first pivot 335, pushing the latch 31 against it to move until the protrusion 311 of the latch 31 disengages from the recess 321 of the lock groove. Figure 8 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.

[0367] Step 1.3: After the battery pack 2 is separated from the power tool, the user releases the trigger 33, for example, by loosening his finger and not applying any force to the trigger 33. At this time, the latch 31 will be reset under the force of the latch elastic reset member 36, and the trigger 33 will be reset under the force of the torsion spring, so that the locking component 33 returns to its initial state.

[0368] It is understandable that the pushing action applied to the trigger 33 in the second unlocking action could also be a flicking action or other actions that have the same effect, which will not be elaborated here.

[0369] In this embodiment of the power tool, the user can only unlock the battery pack 2 by applying two unlocking actions, namely flipping and pushing, to the trigger 33. Ordinary tree branches cannot unlock the battery pack 2, which can effectively reduce the risk of the battery pack 2 being unlocked by accident, avoid harming people or objects in the surrounding work environment, and effectively reduce safety hazards.

[0370] In another embodiment, refer to Figures 11 to 16 The trigger 33 is guided and moved along the first direction by the guide structure 337. The first unlocking action is configured to press the trigger 33 so that it moves along the first direction until it abuts against the latch linkage 34; the second unlocking action is configured to push the trigger 33 along the second direction so that the trigger 33 moves and drives the latch linkage 34 to pivot around the first pivot 335. The latch linkage 34 drives the latch 31 to move until the latch 31 disengages from the latch receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0371] Furthermore, referring to Figures 20 to 22The guide structure 337 includes a guide block 3371 pivotally disposed around a first pivot 335 and a guide groove 3372 disposed on the trigger member 33 and cooperating with the guide block 3371. At this time, the first unlocking action is configured to press the trigger member 33 to move it along the first direction until it abuts against the latch linkage member 34; the second unlocking action is configured to push the trigger member 33 along the second direction, so that the trigger member 33 pivots around the first pivot 335 with the guide block 3371, and drives the latch linkage member 34 to pivot around the first pivot 335. The latch linkage member 34 drives the latch 31 to move until the latch 31 disengages from the latch receiving part 32, thereby unlocking the battery pack 2 relative to the housing 1.

[0372] The trigger elastic reset element 334 is a spring disposed between the guide block 3371 and the guide groove 3372.

[0373] Reference Figures 17 to 19 The housing 1 or battery pack housing 201 is provided with a trigger 33 mounting slot 4. A limit wall 44 is provided at the trigger 33 mounting slot 4. The trigger 33 is provided with a stop surface 3313 that cooperates with the limit wall 44. The limit wall 44 is used to stop the stop surface 3313 so that the trigger 33 can move in a first direction before it leaves the stop surface of the limit wall 44 and cannot move in a second direction.

[0374] A guide wall 45 is also provided on the housing 1 or battery pack housing 201. The guide wall 45 is used to guide the trigger 33 to move along the second direction. As an example, the guide wall 45 extends approximately along the second direction. The guide wall 45 can guide the trigger 33 to a certain extent, making it easier for the user to find the force angle that matches the second direction, making the unlocking action of the battery pack 2 easier to operate.

[0375] Reference Figure 23 The trigger 33 includes a pressing surface 3314 that is generally perpendicular to the first direction and a pushing surface 3315 that is generally perpendicular to the second direction.

[0376] Reference Figures 11 to 14 In this embodiment, a tree chainsaw 100 is used as an example of a power tool. The power tool includes a housing 1, a battery pack 2, and a locking assembly 33. The housing 1 is provided with a battery pack mounting part 101, and the battery pack 2 is detachably attached to the battery pack mounting part 101. The battery pack 2 is used to provide power to the power tool, and the battery pack 2 includes a battery pack housing 201.

[0377] Reference Figure 15 and Figure 16The locking assembly 33 includes a latch 31, a latch receiving portion 32, a trigger 33, and a latch resilient reset member 36. The latch receiving portion 32 is configured as a lock groove. The latch 31 includes a protrusion 311, and the lock groove includes a recess 321. The protrusion 311 of the latch 31 can engage with the recess 321 of the lock groove, thereby locking the battery pack 2 relative to the housing 1. As an example, the latch 31 and the trigger 33 are movably disposed on the housing 1, and the lock groove is disposed on the battery pack housing 2012. Specifically, the housing 1 has a receiving cavity 102 for accommodating the latch 31 and the trigger 33, and the receiving cavity 102 has a through hole 1021 for the latch 31 to extend into the battery pack mounting portion 101. The latch resilient reset member 36 acts on the latch 31 to apply a force toward the lock groove.

[0378] The battery pack 2 and the battery pack mounting part 101 include multiple sets of mating surfaces located on different sides of the battery pack 2, with a locking component 33 disposed on one set of mating surfaces. As an example, the battery pack mounting part 101 is a battery pack 2 receiving chamber with an opening at the top. The power tool includes a working head, and the working head of the tree chainsaw 100 is its cutting component 62. The side of the battery pack 2 closest to the working head of the power tool is the front side, and the side of the battery pack 2 away from the working head of the power tool is the rear side. The battery pack mounting part 101 semi-encloses the battery pack 2. Specifically, the battery pack mounting part 101 has an opening at the top, and the battery pack 2 and the battery pack mounting part 101 include five sets of mating surfaces located on the front, rear, left, right, and bottom sides of the battery pack 2. The locking component 33 is disposed on the set of mating surfaces located on the front side of the battery pack 2.

[0379] Reference Figures 17 to 19 The trigger element 33 acts on the latch 31 and moves the latch 31 in conjunction with it. The trigger element 33 includes a trigger element 33, a latch linkage element 34, and a trigger element elastic reset element 334. Both the trigger element 33 and the latch linkage element 34 are movably disposed, and the latch linkage element 34 can drive the latch 31 to move. Further, the latch linkage element 34 is pivotally disposed on the housing 1 about a first pivot 335. The latch linkage element 34 includes a latch abutment portion 341 and a trigger abutment portion 342, and the trigger abutment portion 342 and the latch abutment portion 341 pivot synchronously about the first pivot 335. Specifically, the latch linkage element 34 has a through shaft hole 343 through which the first pivot 335 passes, and the latch linkage element 34 is pivotally disposed on the first pivot 335 through the through shaft hole 343.

[0380] Reference Figures 20 to 22The trigger member 33 is guided and movable along a first direction by the guide structure 337, and can move to abut against the trigger member abutment portion 342, causing the trigger member abutment portion 342 to pivot around the first pivot 335. The latch abutment portion 341 is used to abut against the latch 31 and pivots with the trigger member abutment portion 342 around the first pivot 335, thereby causing the latch 31 to move away from the lock groove. The trigger member 33 includes an initial position in its state where no unlocking action is applied, and the trigger member elastic reset member 334 acts on the trigger member 33 to apply a force to the trigger member 33 to move it toward the initial position. As an example, the first pivot 335 is fixedly mounted on the housing 1, and the guide structure 337 includes a guide block 3371 pivotally mounted around the first pivot 335 and a guide groove 3372 provided on the trigger member 33 that cooperates with the guide block 3371. The trigger elastic reset element 334 is a spring disposed between the guide block 3371 and the guide groove 3372.

[0381] Specifically, the guide structure 337 is a linear guide structure 337. The guide block 3371 includes multiple guide portions 3371a, with a space formed in the middle of the multiple guide portions 3371a to accommodate the trigger elastic reset member 334. The lower end of the trigger member 33 has a guide groove 3372 that cooperates with the multiple guide portions 3371a of the guide block 3371. A space is formed in the middle of the guide groove 3372 to accommodate the trigger elastic reset member 334, and a spring mounting seat 3372a for mounting the trigger elastic reset member 334 is provided. The guide block 3371 also has a guide boss 3371b for abutting against the lower end face of the trigger member 33 to limit the guide movement stroke of the trigger member 33.

[0382] The latch abutment portion 341 and the trigger abutment portion 342 are located on opposite sides of a plane passing through the pivot axis of the first pivot 335 and parallel to the direction of movement of the latch 31. Preferably, the angle between the extending direction of the latch abutment portion 341 and the extending direction of the trigger abutment portion 342 is 90° to 180°. More preferably, the angle between the extending direction of the latch abutment portion 341 and the extending direction of the trigger abutment portion 342 is 150° to 180°.

[0383] The latch abutment portion 341 includes an extension portion 341a disposed generally along its extending direction and an abutment portion 341b connected to the outer end of the extension portion 341a. The abutment portion 341b has a smoothly transitioned outer contour in the pivoting direction of the latch abutment portion 341. As an example, the latch abutment portion 341 may include two symmetrically arranged abutment portions 341b, which are connected as one unit by the extension portion 341a.

[0384] In this embodiment, the locking tongue linkage 34 is an integral structure, and the locking tongue abutment 341 and the trigger abutment 342 are formed on the integral structure in different directions.

[0385] The trigger 33 is configured to control the protrusion 311 of the latch 31 to disengage from the recess 321 of the lock groove based on two unlocking actions applied to the trigger 33, thereby unlocking the battery pack 2 relative to the housing 1. The two unlocking actions include a first unlocking action and a second unlocking action, both of which act on the trigger 33. The first unlocking action is configured to press the trigger 33 to move it along a first direction until it abuts against the latch linkage 34; the second unlocking action is configured to push the trigger 33 along a second direction, causing the trigger 33 to pivot around a first pivot 335, driving the latch linkage 34 to pivot around the first pivot 335 until the protrusion 311 of the latch 31 disengages from the recess 321 of the lock groove, thereby unlocking the battery pack 2 relative to the housing 1. In this embodiment, the first direction is as follows: Figure 18 The direction indicated by the middle arrow c, the second direction is as follows Figure 19 The direction indicated by the middle arrow d.

[0386] The housing 1 is provided with a trigger element 33 mounting slot 4, and the trigger element 33 is mounted in the trigger element 33 mounting slot 4. A limiting wall 41 is provided in the trigger element 33 mounting slot 4. The trigger element 33 is provided with a stop surface 3313 that cooperates with the limiting wall 41. The limiting wall 44 is used to stop the stop surface 3313, so that the trigger element 33 can only move in the first direction and cannot move in the second direction before it is stopped by the limiting wall 44. Specifically, the trigger element 33 mounting slot 4 is connected to the interior of the housing 1, that is, it is connected to the receiving cavity 102. The groove wall of the trigger element 33 mounting slot 4 forms the guide wall 44. The guide wall 44 extends generally in the first direction to guide and limit the trigger element 33. The housing 1 is also provided with a guide wall 44 that extends generally in the second direction. The guide wall 44 is used to guide the trigger element 33 to move in the second direction. The upper edge of the guide wall 44 is connected to the lower edge of the limiting wall 44.

[0387] Reference 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.

[0388] 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.

[0389] 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.

[0390] When a user needs to disassemble battery pack 2, battery pack 2 must first be unlocked, which includes the following steps:

[0391] 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;

[0392] 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.

[0393] Step 2.3: After the battery pack 2 is separated from the power tool, the user releases the trigger 33, for example, by loosening his finger and not applying any force to the trigger 33. At this time, the latch 31 will be reset under the force of the latch elastic reset member 36, and the trigger 33 will be reset under the force of the trigger elastic reset member 334, so that the locking component 33 returns to its initial state.

[0394] Users can only unlock the battery pack 2 by applying two unlocking actions, pressing and pushing, to the trigger 33. Ordinary tree branches cannot unlock the battery pack 2, which can effectively reduce the risk of the battery pack 2 being unlocked by accident, avoid harming people or objects in the surrounding work environment, and effectively reduce safety hazards.

[0395] Reference Figure 1 and Figure 12 The tree chainsaw 100 in the aforementioned embodiment includes a body 61, a cutting assembly 62, a top handle 63 (also known as the main handle), and a battery pack mounting portion 101. The cutting assembly 62 is located at the front of the body 61, the battery pack mounting portion 101 is located at the rear of the body 61, and the top handle 63 is located on the upper side of the body 61 and in front of the battery pack mounting portion 101. The top handle 63 includes a top handle housing 631, which is part of the aforementioned housing 1. A locking assembly 33 is at least partially disposed within the top handle housing 631. As an example, a drive motor (not shown) is provided inside the body 61. The drive motor is powered by the battery pack 2 and drives the cutting assembly 62 to operate through a transmission assembly 64. The transmission assembly 64 includes a guide plate 641 and a sprocket (not shown). The cutting assembly 62 includes a saw chain 621 wound between the guide plate 641 and the sprocket. The drive motor directly or indirectly drives the sprocket to rotate, causing the saw chain 621 to reciprocate along the guide plate 641, thereby achieving the cutting function. The aforementioned housing 1 includes at least the housing of the body 61, the housing of the top handle 63, and the battery pack mounting part 101. The trigger 33 of the locking assembly 33 is disposed on the upper side of the top handle housing 631.

[0396] The tree chainsaw 100 also includes a trigger 66 for controlling the operation of the drive motor. The trigger 66 is located on the upper or lower side of the top handle housing 631. The trigger 33 and the trigger 66 are respectively located on the same side or opposite side of the top handle housing 631 for easy user operation.

[0397] The tree chainsaw 100 also includes an auxiliary handle 65, one end of which is connected to the body 61 and the other end to the top handle 63, and is located beside the body 61. Preferably, the auxiliary handle 65 is located on the left side of the body 61.

[0398] The top handle 63 of the tree chainsaw 100 is located on the front side of the battery pack 2, making the chainsaw 100 smaller and more compact. When used with the auxiliary handle 65 located on the side of the body 61, it is convenient for the operator's arm to operate in a confined space, and is especially suitable for use in complex operating environments such as tree work.

[0399] It is understood that in other embodiments, the locking component 33 may also be configured such that the latch linkage 34 is fixedly connected to the latch 31. As an example, the trigger 33 is configured not to abut against the latch linkage 34 in the initial state. The first unlocking action is configured to apply a force along a third direction to the trigger 33, controlling the trigger 33 to move until it abuts against the latch linkage 34. The second unlocking action is configured to apply a force along a fourth direction to the trigger 33, causing the trigger 33 to drive the latch linkage 34 to move, thereby causing the latch 31 to disengage from the latch receiving part 32. Here, the third direction and the fourth direction are different directions. The specific implementation of the locking component 3 in this embodiment will not be described in detail here.

[0400] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0401] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0402] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0403] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0404] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0405] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0406] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. An electric tool, comprising: The housing is provided with a battery pack mounting section, which allows the battery pack to be inserted and connected. Locking assembly, including bolt, bolt receiver and trigger; Its features are: The latch and the trigger are movably disposed on one of the housing and the battery pack, and the latch receiving part is disposed on the other of the housing and the battery pack; The locking assembly also includes a latch linkage. Under the action of external force, the trigger generates at least two different actions. One action of the trigger is that the trigger moves to a position that abuts against the latch linkage. The other action of the trigger is that the trigger continues to move and drives the latch linkage to move. The latch linkage drives the latch to move until the latch disengages from the latch receiving part, thereby unlocking the battery pack relative to the housing.

2. The power tool according to claim 1, characterized in that, The trigger can pivot about the second pivot. One action of the trigger is that the trigger pivots about the second pivot to a position that abuts against the latch linkage. Another action of the trigger is that the trigger continues to pivot and drives the latch linkage to move. The latch linkage drives the latch to move until the latch disengages from the latch receiving part.

3. The power tool according to claim 2, characterized in that, The battery pack includes a battery pack housing, and the locking tongue linkage is pivotally movable about a first pivot and pivotally disposed on the housing or the battery pack housing; The locking tongue linkage includes a locking tongue abutment part and a trigger abutment part, wherein the locking tongue abutment part and the trigger abutment part pivot synchronously around the first pivot; One action of the trigger is to pivot about the second pivot until it abuts against the trigger contact portion. Another action generated by the trigger is to drive the trigger contact portion to pivot around the first pivot. The latch abutment portion is configured to pivot around the first pivot along with the trigger abutment portion, thereby driving the latch to move away from the latch receiving portion.

4. The power tool according to claim 1, characterized in that, The number of latch receiving parts is only one, the number of latches is at least one, the latch receiving part is configured to engage with at least one latch, and an action generated by the triggering element causes at least one latch to not disengage from the latch receiving part.

5. The power tool according to claim 1, characterized in that, The latch and the trigger are both movably mounted on the housing, and the latch receiving part is mounted on the battery pack.

6. The power tool according to any one of claims 1 to 5, characterized in that, There is only one trigger, and the same trigger moves sequentially to produce at least two different actions.

7. An electric tool, comprising: The housing is provided with a battery pack mounting section, which allows the battery pack to be inserted and connected. Locking assembly, including bolt, bolt receiver and trigger; Its features are: The latch and the trigger are movably disposed on one of the housing and the battery pack, and the latch receiving part is disposed on the other of the housing and the battery pack; The locking assembly also includes a latch linkage member. The trigger member generates at least two different actions under the action of external force. One action generated by the trigger member enables the latch to be in a position that allows movement, and the other action generated by the trigger member enables the latch linkage member to move and drive the latch to move relative to the latch receiving part.

8. The power tool according to claim 7, characterized in that, The trigger can pivot about the second pivot. One action of the trigger is that the trigger pivots about the second pivot to a position that abuts against the latch linkage. Another action of the trigger is that the trigger continues to pivot and drives the latch linkage to move. The latch linkage drives the latch to move until the latch disengages from the latch receiving part.

9. The power tool according to claim 7, characterized in that, The battery pack includes a battery pack housing, and the locking tongue linkage is pivotally movable about a first pivot and pivotally disposed on the housing or the battery pack housing; The locking tongue linkage includes a locking tongue abutment part and a trigger abutment part, wherein the locking tongue abutment part and the trigger abutment part pivot synchronously around the first pivot; The trigger element is capable of pivoting about a second pivot axis, wherein... One action of the trigger is to pivot about the second pivot until it abuts against the trigger contact portion. Another action generated by the trigger is to drive the trigger contact portion to pivot around the first pivot. The latch abutment portion is configured to pivot around the first pivot along with the trigger abutment portion, thereby driving the latch to move away from the latch receiving portion.

10. The power tool according to claim 7, characterized in that, One action generated by the trigger causes the trigger to produce a first stroke, and another action generated by the trigger causes the trigger to produce a second stroke; The first stroke is configured to move the trigger to a position where the latch linkage can be triggered; the second stroke is configured to move the latch linkage to move the latch until the latch disengages from the latch receiving part, thereby releasing the battery pack from the housing. The first stroke and the second stroke have different directions of force applied to the trigger within at least a portion of the travel.

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