CN220094518U - Electric tool host computer and electric tool - Google Patents

Abstract

The utility model relates to the technical field of electric tools and discloses an electric tool host and an electric tool. The utility model provides an electric tool host computer includes a shell main part and is set up in a power component in the shell main part, the shell main part has one or more air intake, at least an air outlet and an air current passageway, wherein the air current passageway is by the air intake with the air outlet switches on in the external space, power component includes at least a motor, the motor can be supplied power, the motor has at least a motor air intake and at least a motor air outlet, wherein the motor air intake is close to the air intake, the motor air outlet is close to the air outlet, the air current passageway is in proper order by the air intake motor air intake, motor air outlet and air outlet define, in order that the air current passes through in proper order the air intake motor air intake behind the motor air outlet follow the air outlet flows.

Description

Electric tool host computer and electric tool

Technical Field

The present disclosure relates to power tools, and particularly to a power tool.

Background

The electric tool is a widely used operation tool for holding operation by hand, and generally comprises a casing, a battery assembly, a power assembly, a holding assembly, a blade assembly and the like, wherein the battery assembly, the power assembly, the holding assembly, the blade assembly and the like are arranged in the casing, the hand of an operator holds the holding assembly, and the power assembly is powered by the battery assembly, so that the power assembly drives the blade assembly to operate.

Although the conventional electric tool can realize electric work, the following drawbacks are also present: most of battery components of the existing electric tools are connected to the top or bottom of a machine shell in a plugging manner along the extending direction perpendicular to the blade components, and the battery components are often arranged together with parts such as power components, so that the weight of the electric tools is concentrated near the power components, the holding comfort is poor, meanwhile, the heat dissipation performance is poor, and the performance of the electric tools is affected; the battery assembly can be arranged at the top of the shell in a pluggable manner, sundries such as saw dust and dust are easy to enter the battery compartment, the battery compartment is difficult to clean, the use is affected, and the battery assembly can be arranged at the bottom of the shell in a pluggable manner, so that the battery assembly is easy to collide and damage.

Disclosure of Invention

An object of the present utility model is to provide a main machine of an electric tool, so as to solve the problems of poor holding comfort and poor heat dissipation performance of a pruning machine.

Another object of the present utility model is to provide a power tool.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a power tool host adapted to mount at least one blade assembly for shearing at least one sheared object, comprising:

the shell body is provided with one or more air inlets, at least one air outlet and an air flow channel, wherein the air flow channel is communicated with an external space through the air inlets and the air outlets; and

the motor is provided with at least one motor air inlet and at least one motor air outlet, wherein the motor air inlet is close to the air inlet, the motor air outlet is close to the air outlet, and the air flow channel is defined by the air inlet, the motor air outlet and the air outlet in sequence so that air flow sequentially passes through the air inlet, the motor air inlet and the motor air outlet and then flows out from the air outlet.

Further, the air flow channel is arranged from bottom to top, the air outlet is arranged in the upper space of the air inlet, and the motor air outlet is arranged in the upper space of the motor air inlet.

Further, the air inlet includes at least one first air inlet formed in a side wall of the case body, and the first air inlet is disposed between the battery compartment and the power assembly.

The battery compartment is further provided with a battery compartment air inlet, the air inlet further comprises at least one second air inlet, the second air inlet is at least one battery compartment air inlet, and the air flow channel is conducted to the external space through at least one opening of the battery compartment and the battery compartment air inlet.

Further, the air outlet and the motor air outlet are held at intervals, at least one of the air outlets is provided with a side wall of the case main body, and the motor air outlet and the air outlet are provided at a same height when the case main body is horizontally placed.

Further, the power tool host further comprises a battery pack, wherein the power assembly comprises at least one motor, and when the battery pack is locked and placed in the battery compartment, the motor is powered by the battery pack, so that air flow of an external environment flows out from the battery pack through the motor air inlet, the motor air outlet and the air outlet in sequence.

Further, the power tool host further comprises a battery pack, the housing body comprises at least one second holding piece, and the battery pack is detachably arranged in the battery compartment.

Further, the rear end face of the battery pack placed in the battery compartment protrudes out of the opening of the battery compartment, and the rear end face of the battery pack does not exceed the rear end face of the second holding member.

Further, a power tool includes a power tool main body and a blade assembly detachably mounted to a first main body portion of the power tool main body, the blade assembly extending from the first main body portion to an external space, the blade assembly being detachably connected to and driven by the power assembly.

A power tool host, wherein the power tool host is adapted to be powered by a battery pack, comprising:

the shell body is provided with one or more air inlets, at least one air outlet and an air flow channel, wherein the air flow channel is communicated with an external space through the air inlets and the air outlets; and

a power assembly, wherein the power assembly comprises a motor and a transmission assembly in transmission connection with the motor, wherein the transmission assembly is driven by the motor, the motor is arranged above the transmission assembly, the second holding piece is arranged above the battery compartment, and the transmission assembly and the battery compartment are arranged along the length direction of the shell main body;

the blade assembly is detachably arranged on the first main body part of the power tool main machine, extends from the first main body part to the external space, is detachably connected with the power assembly and is driven by the power assembly.

Compared with the prior art, the utility model has the beneficial effects that:

the second holding piece is arranged above the battery compartment, when a user holds the second holding piece, the battery compartment and the battery pack are positioned below the second holding piece, an air inlet is arranged between the battery compartment and the power component, an air outlet is arranged on the side face of the shell main body, the heat dissipation component can drive air flow to flow in from the air inlet, after passing through the power component, the air flow flows out from the air outlet to form a bottom-up air flow channel, heat emitted by the power component is brought to the outside, and the power component is prevented from stopping running due to overhigh temperature; meanwhile, the battery bin and the battery pack are positioned below the second holding piece, so that the weight of the electric tool can be prevented from being concentrated at the power assembly, and the comfort and experience of the operation of the pruning machine are prevented from being reduced due to the fact that the pruning machine is heavy.

Drawings

FIG. 1 is a front view of a power tool host according to the present utility model;

FIG. 2 is a cross-sectional view of a power tool main unit according to the present utility model;

FIG. 3A is a partial cross-sectional view of a power tool host according to the present utility model;

FIG. 3B is a partial cross-sectional view of the power tool main unit of the present utility model;

FIG. 4 is an exploded view of the power tool main unit of the present utility model;

FIG. 5 is a schematic perspective view of the electric tool of the present utility model;

fig. 6 is a front view of the power tool of the present utility model.

In the figure: 1. a case main body; 11. a first body portion; 12. a second body portion; 13. a receiving chamber; 14. an air inlet; 15. an air outlet; 16. a connection port; 17. a protective cover; 2. a power assembly; 21. a transmission mechanism; 22. a motor; 3. a heat dissipation assembly; 4. a control panel assembly; 5. a blade assembly; 51. a knife supporting part; 6. a battery compartment; 601. an opening; 602. the air inlet of the battery bin; 7. a first grip; 71. a first trigger; 72. a first microswitch; 8. a second grip; 800. a grip channel; 81. a second trigger; 82. a second microswitch; 9. releasing the button; 91. a limiting mechanism; 10. a support part; 101. a first support portion; 102. a second supporting part; 1000. and a battery pack.

Detailed Description

The present utility model will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present utility model, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1-2, the present utility model provides a power tool main unit, which comprises a housing main unit 1, a power unit 2 and a heat dissipation unit 3 disposed in the housing main unit 1, wherein the power unit 2 is electrically connected with a control board unit 4, the housing main unit 1 has a first main unit 11 and a second main unit 12, the first main unit 11 and the second main unit 12 are respectively disposed at two sides of the housing main unit 1 along the length direction of the housing main unit 1, the power unit 2 extends from the second main unit 12 to the first main unit 11, a connection port 16 is formed on the end surface of the first main unit 11, a battery compartment 6 is formed in the second main unit 12, the battery compartment 6 is suitable for accommodating a battery pack 1000 for supplying power to the power unit 2, at least one air inlet 14 and at least one air outlet 15 are formed in the housing main unit 1, so that air flows in from the air inlet 14 and flows out from the air outlet 15 under the driving of the heat dissipation unit 3, and heat generated by the operation of the equipment is taken away.

The housing body 1 is hollow to form a containing cavity 13, the power assembly 2, the heat dissipation assembly 3 and the control board assembly 4 are all arranged in the containing cavity 13, the power assembly 2 is electrically connected with the control board assembly 4, the power assembly 2 comprises a transmission mechanism 21 and a motor 22 arranged on the transmission mechanism 21, the heat dissipation assembly 3 is arranged in the motor 22 and driven by the motor 22, and preferably, the heat dissipation assembly 3 is a fan of the motor 22. The battery compartment 6 and the power assembly 2 are aligned in the longitudinal direction of the power tool main body within the housing cavity 13. The accommodating cavity 13 is further defined with an air flow channel from top to bottom, the air inlet 14 is arranged between the battery compartment 6 and the power component 2, the air outlet 15 is arranged on the side surface of the shell main body 1 and corresponds to the air outlet end 32 of the heat dissipation component 3, the air flow channel and the air outlet 15 are positioned on the same horizontal level, the air flow channel is conducted in an external space by the air inlet 14 and the air outlet 15, and then air flow can flow in from the air inlet 14 under the driving of the heat dissipation component 3, and after passing through the motor 22 and the heat dissipation component 3, flows out from the air outlet 15, and brings heat generated by the operation of the motor 22 to the outside, so that the heat dissipation of the motor 22 is realized.

The battery compartment 6 is provided with the opening 601, the opening 601 is obliquely upwards arranged and forms an included angle of 0-20 degrees with the horizontal plane, the battery pack 1000 is arranged in the battery compartment 6 in a pluggable manner through the opening 601, the opening 601 is obliquely upwards arranged, the battery pack 1000 can be prevented from being contacted with a placing plane when a handle is placed on the plane, collision of the battery pack 1000 is avoided, and meanwhile, the opening 601 is obliquely upwards arranged, so that a user can conveniently plug the battery pack 1000.

In some embodiments, the end of the battery compartment 6 near the power assembly 2 is also provided with an air inlet 14, through which the second body portion 12 is in communication with a battery cavity (not shown) of the battery compartment 6, and the battery cavity (not shown) is in communication with an external space through an opening 601 (not shown) and is in communication with the external space through the accommodating cavity 13 of the housing body 1 of the air inlet 14, and when the battery pack 1000 is placed in the battery compartment 6, the battery pack 1000 can be cooled by the cooling assembly 3.

The power tool main unit comprises a housing main body 1, wherein the housing main body 1 is provided with one or more air inlets 14, at least one air outlet 15 and an air flow channel, and the air flow channel is communicated with an external space through the air inlets 14 and the air outlets 15.

The electric tool main machine comprises a power component 2 arranged in a shell main body, the power component comprises at least one motor 22, the motor 22 can be powered, the motor 22 is provided with at least one motor air inlet 221 and at least one motor air outlet 222, wherein the motor air inlet 221 is close to the air inlet 14, the motor air outlet 222 is close to the air outlet 15, and an air flow channel is sequentially defined by the air inlet 14, the motor air inlet 221, the motor air outlet 222 and the air outlet 15 so that air flow flows out from the air outlet 15 after sequentially passing through the air inlet 14, the motor air inlet 221 and the motor air outlet 222.

Preferably, the air flow passage is provided from bottom to top, the air outlet 15 is provided in an upper space of the air inlet 14, and the motor air outlet 222 is provided in an upper space of the motor air inlet 221.

Referring to fig. 3A, the air intake 14 includes at least one first air intake port 141, the first air intake port 141 being formed at a side wall of the case body 1, and the first air intake port 141 being disposed between the battery compartment 6 and the power assembly 2.

In a variant of the present preferred embodiment, with reference to fig. 3B, the air intake 14 comprises at least a first air intake 141, the first air intake 141 being formed in the side wall of the casing body 1, and the first air intake 141 being arranged between the battery compartment 6 and the power assembly 2. Further, the battery compartment 6 further has a battery compartment air inlet, and the air inlet further includes at least one second air inlet 142, where the second air inlet 142 is at least one battery compartment air inlet, and the air flow channel is conducted to the external space through at least one opening 601 of the battery compartment and the battery compartment air inlet 602.

Referring to fig. 4, the air outlet 15 and the motor air outlet 222 are held at intervals, at least one of the air outlets 15 is provided with a sidewall of the case body 1, and when the case body 1 is put flat, the motor air outlet 222 and the air outlet 15 are provided at a high height.

The power tool host further comprises a battery pack 1000, wherein the power assembly 2 comprises at least one motor 22, and when the battery pack 1000 is locked and placed in the battery compartment, the motor 22 is powered by the battery pack 1000, so that air flow of external environment flows out from the battery pack 1000 through the motor air inlet 221, the motor air outlet 222 and the air outlet 15 in sequence.

The rear end face of the battery pack 1000 placed in the battery compartment 6 protrudes from the opening 601 of the battery compartment, and the rear end face of the battery pack 1000 does not exceed the rear end face of the second grip 7.

The bottom of shell main part 1 is provided with two at least supporting parts 10, and when electric tool host computer was placed on ground or other planes, supporting part 10 contacted with ground or other planes formed a supporting plane, and when battery package 1000 was held in battery compartment 6, battery package 1000 was higher than the supporting plane that supporting part 10 formed, and then the bottom surface and the side of the part of battery package 1000 protrusion battery compartment 6 can not contact with ground or other planes, can avoid electric tool host computer to place on ground or other planes, and battery package 1000 contacted with ground or plane caused the collision, the damage etc. of battery package 1000.

Specifically, the bottom surface of the first main body 11 is provided with a first supporting part 101, the bottom surface of the second main body 12 is provided with a second supporting part 102, when the electric tool main body is placed on a plane and the blade assembly 5 is not installed, the first supporting part 101 and the second supporting part 102 are contacted with the ground to form a supporting plane, the battery pack 1000 is higher than the supporting plane, and the bottom surface and the side surface of the battery pack 1000 exposed to the battery compartment 6 are not contacted with the ground, so that collision and damage of the battery pack 1000 can be avoided; when the electric tool host is placed on a plane and is provided with the blade assembly 5, the battery compartment 6 is higher than the supporting plane, and the bottom surface and the side surface of the battery pack 1000 exposed to the battery compartment 6 are not contacted with the ground, so that the battery pack 1000 is prevented from being knocked and damaged. The opening 601 of the battery compartment 6 is higher than the supporting plane, and the vertical height difference between the two is smaller than 15mm, preferably, the height difference is 3 mm-12 mm.

The first body part 11 of the shell main body 1 is provided with a first holding piece 7, the first trigger 71 is arranged on the first holding piece 7 through an elastic element, when a user holds the first holding piece 7 with one hand and can press the first trigger 71 with the hand, the first holding piece 7 is internally provided with a first micro switch 72, the first trigger 71 is abutted against an action reed of the first micro switch 72, when the user presses the first trigger 71, external force acts on the action reed through the first trigger 71, and when the action reed is displaced to a critical point, instantaneous action is generated, so that a movable contact and a fixed contact at the tail end of the action reed are quickly closed; when the user releases the first trigger 71, the first trigger 71 rebounds under the action of the elastic element, after the acting force on the acting reed is removed, the acting reed generates a reverse acting force, and when the reverse stroke of the acting reed reaches a critical point, a transient action is generated, so that the movable contact and the fixed contact at the tail end of the acting reed are quickly separated. The first micro switch 72 is electrically connected to the control board assembly 4, and when the first micro switch 72 is opened or closed, the first micro switch 72 sends an opened or closed electrical signal to the control board assembly 4.

A second grip 8 is provided on the second body portion 12 of the case body 1, the second grip 8 being located above the battery compartment 6. The battery compartment 6 defines a rear end surface of the opening 601 not beyond a rear end surface of the second grip 8 in a length direction of the case main body. The second trigger 81 is arranged on the second holding piece 8 through an elastic element, when a user holds the second holding piece 8 with one hand and can press the second trigger 81 with the hand, a second micro switch 82 is further arranged in the second holding piece 8, the second trigger 81 is abutted against an action reed of the second micro switch 82, when the user presses the second trigger 81, external force acts on the action reed through the second trigger 81, and when the action reed moves to a critical point, instantaneous action is generated, so that a movable contact and a fixed contact at the tail end of the action reed are quickly closed; when the user releases the second trigger 81, the second trigger 81 rebounds under the action of the elastic element, after the acting force on the acting reed is removed, the acting reed generates directional acting force, and when the reverse stroke of the acting reed reaches a critical point, instantaneous action is generated, so that the movable contact and the fixed contact at the tail end of the acting reed are quickly separated. The second micro switch 82 is electrically connected to the control board assembly 4, and when the second micro switch 82 is opened or closed, the second micro switch 82 sends an opened or closed electrical signal to the control board assembly 4.

The control board assembly 4 is provided with a signal receiver, the open or closed electric signals sent by the first micro switch 72 and the second micro switch 82 can be received by the signal receiver, when the signal receiver receives the closed signals sent by the first micro switch 72 and the second micro switch 82 at the same time, the control board assembly 4 conducts a circuit, the battery pack 1000 provides electric energy for the power assembly 2 and the heat dissipation assembly 3, and the power assembly 2 and the heat dissipation assembly 3 start to operate; when the signal receiver receives only the closing signal of the first micro switch 72 or the second micro switch 82 or does not receive the closing signal of the first micro switch 72 and the second micro switch 82, the control board assembly 4 opens the circuit, the battery pack 1000 stops supplying electric energy to the power assembly 2 and the heat dissipation assembly 3, and the power assembly 2 and the heat dissipation assembly 3 stop operating. Specifically, when the user uses the electric tool, one hand holds the first holding member 7, the other hand holds the second holding member 8, and when the two hands press the first trigger 71 and the second trigger 81 simultaneously, the control board assembly 4 receives the closing signals sent by the first micro switch 72 and the second micro switch 82, the control board assembly 4 conducts a circuit, and the electric tool is started; when a user releases any hand or holds the electric tool by only one hand in an unexpected situation, the signal receiver is not simultaneously subjected to the signals of the first micro switch 72 and the second micro switch 82, the control panel assembly 4 opens the circuit, the electric tool stops, the first micro switch 72 and the second micro switch 82 are simultaneously closed, and the electric tool is started, so that the danger caused by misoperation can be reduced.

The control panel assembly 4 is further connected with an EMC assembly, which is an anti-interference assembly commonly used in electronic circuits and comprises two parts of electromagnetic interference and electromagnetic sensitivity, the EMC assembly is suitable for filtering out conducted interference, suppressing and attenuating noise signal interference generated by the outside and equipment with protected influence, signals sent by the first micro switch 72 and the second micro switch 82 are prevented from being interfered by the outside signal, the signals cannot be accepted by the control panel assembly 4, the electric tool cannot be started or stopped normally, and meanwhile, the EMC assembly can also suppress and attenuate the interference of the equipment to the outside.

The battery pack 1000 is accommodated in the battery compartment 6 in a self-locking manner and is partially exposed to the external space of the battery compartment 6, a release button 9 is arranged above the battery compartment 6, the release button 9 is positioned between the second trigger 81 and the battery compartment 6, the release button 9 is connected with a limiting mechanism 91, the limiting mechanism 91 is arranged on the side wall of the battery compartment 6, the release button 9 can control the limiting mechanism 91 to switch between a release position and an accommodating position, when the release button 9 is pressed down, the limiting mechanism 91 is switched to the release position, the limiting mechanism 91 does not protrude out of the side wall of the battery compartment 6 and is separated from the battery pack 1000, and the battery pack 1000 can be taken out from the charging compartment; when the release button 9 is released, the limiting mechanism 91 is switched to the accommodating position, and the limiting mechanism 91 protrudes out of the side wall of the battery compartment 6 and is matched with the limiting groove on the surface of the battery pack 1000 so as to limit the battery pack 1000. The user can hold the first holding piece 7 with one hand, and the other hand operates the release button 9 to disassemble the battery pack 1000, the release button 9 is arranged below the second trigger 81, and when the user wants to operate the release button 9 to disassemble the battery pack 1000, the second trigger 81 must be loosened in the use process and the placement process of the electric tool host, so that the battery pack 1000 can be disassembled under the condition that the electric tool host does not work, the battery pack 1000 is prevented from being disassembled when the electric tool host operates, and the use safety of the electric tool is improved.

More preferably, the power tool host further comprises an ejector mechanism, wherein the ejector mechanism is provided to the battery compartment 6. When the battery pack 1000 is placed in the battery compartment, the ejector mechanism is held between the battery compartment air intake 602 and the battery pack 1000. The ejecting mechanism has a limit position and an ejecting position, and when the ejecting mechanism is located at the ejecting position, the battery pack 1000 and the ejecting mechanism are not pressed against each other, and the limit mechanism 91 cannot limit the battery pack 1000. When the pop-up mechanism is located at the limit position, the battery pack 1000 presses the pop-up mechanism, and the battery pack 1000 may be limitedly set by the limit mechanism 91. It should be noted that the ejecting mechanism can be moved from the ejecting position to the limiting position by being pushed by the battery pack 1000, and the battery pack 1000 is limited by the limiting mechanism 91 to be pressed. When the stopper 91 is released, the battery pack 1000 is pushed to be ejected by the restoring force of the ejector.

When an emergency occurs, the user can loosen the second trigger 81 and press the release button 9 downwards, the second trigger 81 rebounds, the second micro switch 82 is released, the drive control assembly and the blade assembly 5 stop working, and after the release button 9 is pressed, the user can take out the battery pack 1000 from the battery compartment 6, so that the battery pack is safer.

The power assembly of the power tool main unit further comprises a transmission mechanism 21 and a motor 22, wherein the transmission mechanism 21 is drivingly connected between the motor 22 and the blade assembly 5, and the motor 22 and the transmission mechanism 21 are arranged in a vertical direction. Preferably, the transmission 21 may be a gear assembly, the transmission 21 comprising a transmission gear connected to an output shaft of the motor 22 and driven by the motor 22, and an eccentric drivingly connected to the transmission gear.

In some preferred embodiments, the heat dissipating assembly 3 is a fan assembly that is self-contained with the motor 22, that is, no additional heat dissipating elements are required to effect heat dissipation from the motor 22 and the battery pack 1000.

The first body portion 11 of the housing body 1 is further provided with a protective cover 17, the protective cover 17 is mounted on the first body portion 11 of the housing body 1 by means of fasteners, the protective cover 17 extends in the height direction, the motor 22 is arranged between the protective cover 17 and the second grip member 8, the protective cover 17 is located between the blade assembly 5 and the first grip member 7, and the protective cover 17 is adapted to protect the hands of a user from scratches.

As shown in fig. 5 and 6, an electric tool includes the above-mentioned electric tool main body and a blade assembly 5, the blade assembly 5 is detachably mounted to a first main body portion 11 of the electric tool main body, the blade assembly 5 extends from the first main body portion 11 to an external space, and the blade assembly 5 is detachably connected to the power assembly 2 and is driven by the power assembly 2. Preferably, the eccentric is drivingly connected to the blade assembly 5, such that the blade assembly 5 is drivingly connected to the output shaft of the motor 22.

The blade assembly 5 comprises a first blade and a second blade, wherein the first blade and the second blade are assembled and integrated, and the first blade and the second blade are movably arranged along the length direction of the blade assembly 5.

Further, the blade assembly 5 includes a first blade, a second blade, and a mount, the first blade and the second blade are limitedly assembled in one body by the mount, and the first blade and the second blade are reciprocally movable with respect to the mount. It should be noted that the movable ranges of the first blade and the second blade are limited.

The drive gear is connected to the output shaft of the motor 22 and is driven by the motor 22, the eccentric being drivingly connected to the drive gear. When the blade assembly is coupled 5 times matingly to the eccentric, the first blade and the second blade are reciprocally driven by the eccentric such that the second blade moves in the second direction when the first blade moves in the first direction.

Preferably, the first direction and the second direction are opposite, and the first blade and the second blade cut the cut object clamped in the first blade and the second blade relatively. That is, the first blade and the second blade reciprocate relatively to effect shearing of the sheared object.

Preferably, the cut object is a part of a tissue of a plant such as a branch, leaf, grass, etc.

It is worth mentioning that the blade assembly 5 may also be assembled as an assembly with other and other different functions to adapt to different usage scenarios.

Optionally, the blade assembly 5 has at least one blade support 51. Preferably, the blade support 51 is formed in at least one of the locking bolts of the mount, wherein the blade assembly 5 is mounted to the power tool main body. When the power tool is placed on a flat surface, the first support portion 101 and the blade support portion 51 contact the flat surface to support the power tool, that is, the blade support portion 51 and the first support portion 101 of the blade assembly 5 contact the flat surface to form a support plane.

Further, by means of the opening 601 of the battery compartment 6, the battery pack 1000 is directly pushed into the battery compartment 6 and partially exposed from the battery compartment 6. The bottom and side surfaces of the battery pack 1000 are partially exposed outside the battery compartment 6, and the bottom and side surfaces of the battery pack 1000 are always higher than the support plane of the power tool. That is, the exposed bottom and side surfaces of the battery pack 1000 are always higher than the support plane defined by the at least two support portions 10 of the power tool. Preferably, when the power tool main body is placed alone, the exposed bottom and side surfaces of the battery pack 1000 are always higher than the support planes defined by at least two support portions 10 of the power tool main body. In other words, when the power tool main body is placed alone, the exposed bottom surface and side surfaces of the battery pack 1000 are always higher than the support plane defined by the first support portion 101 and the second support portion 102 of the power tool main body.

Alternatively, in a variant embodiment of the present embodiment, the exposed bottom and side surfaces of the battery pack 1000 are always higher than the support plane defined by the at least two support portions 10 of the power tool main body when the blade assembly 5 is mounted to the power tool main body. In other words, when the blade assembly 5 is mounted to the power tool main body, the exposed bottom and side surfaces of the battery pack 1000 are higher than the blade support 51 defined by the blade assembly 5 and the first support 101 of the power tool main body.

In another preferred embodiment of the present embodiment, at least two air inlets 14 and at least one air outlet 15 are formed on the housing body 1, so that the air flow can be driven by the heat dissipation component 3 to flow in from the air inlets 14 and flow out from the air outlets 15. One of the air inlets 14 is provided at a side of the case body 1, and the other air inlet 14 is formed at the battery compartment 6. That is, one air intake 14 is held between the battery compartment 6 and the transmission mechanism 21 such that air flows from the air intake 14 into the accommodating chamber 13 of the case main body 1 and passes through the motor 22 such that air flow having an increased temperature flows out from the air outlet 15, thereby taking away heat of the motor 22; the other air intake 14 is formed at the end face of the battery compartment 6 near the second main body portion 12, that is, the second main body portion 12 and the battery chamber of the battery compartment 6 are in communication through the other air intake 14 formed at the battery compartment 6. Since the battery chamber of the battery compartment 6 is conducted to the external space through the opening 601 of the battery compartment 6, the accommodation chamber 13 of the case main body 1 and the external space are conducted through the other air inlet 14.

When the battery pack 1000 is placed in the battery compartment 6, the internal and external spaces of the battery pack 1000 are conducted, so that the battery pack 1000 placed in the battery compartment 6 is driven by the heat dissipation assembly 3 of the power tool main unit to dissipate heat, that is, the battery pack 1000 and the motor 22 can be dissipated by the heat dissipation assembly 3. Preferably, the heat dissipating assembly 3 is a fan that is self-contained with the motor 22, i.e., no additional heat dissipating elements are required to dissipate heat from the motor 22 and the battery pack 1000.

The foregoing has outlined the basic principles, features, and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (14)

1. A power tool host adapted to mount at least one blade assembly for shearing at least one sheared object, comprising:

the shell body is provided with one or more air inlets, at least one air outlet and an air flow channel, wherein the air flow channel is communicated with an external space through the air inlets and the air outlets; and

the motor is provided with at least one motor air inlet and at least one motor air outlet, wherein the motor air inlet is close to the air inlet, the motor air outlet is close to the air outlet, and the air flow channel is defined by the air inlet, the motor air outlet and the air outlet in sequence so that air flow sequentially passes through the air inlet, the motor air inlet and the motor air outlet and then flows out from the air outlet.

2. The power tool main unit as claimed in claim 1, wherein said air flow passage is provided from bottom to top, said air outlet is provided in an upper space of said air inlet, and said motor air outlet is provided in an upper space of said motor air inlet.

3. The power tool host of claim 1, wherein the air intake includes at least a first air intake formed in a side wall of the housing body, and the first air intake is disposed between the battery compartment and the power assembly.

4. The power tool host machine of claim 1 or 3, wherein the housing body includes a second body portion, a battery compartment is formed in the second body portion, the battery compartment further has a battery compartment air inlet, the air inlet further includes at least a second air inlet, wherein the second air inlet is at least the battery compartment air inlet, and the air flow channel is communicated with the external space through at least one opening of the battery compartment and the battery compartment air inlet.

5. The power tool main body according to claim 1, wherein the air outlet and the motor air outlet are held at intervals, at least one of the air outlets is provided with a side wall of the case main body, and the motor air outlet and the air outlet are provided at a height when the case main body is laid flat.

6. The power tool host of claim 1, further comprising a battery pack, wherein the power assembly comprises at least one motor, the motor being powered by the battery pack when the battery pack is lockingly positioned in the battery compartment for airflow from the external environment from the battery pack to flow sequentially through the motor inlet, the motor outlet, and the air outlet.

7. The power tool host of claim 1 or 2, further comprising at least one heat sink assembly, the power assembly comprising a motor, the heat sink assembly being a fan carried by the motor.

8. The power tool host of claim 3, further comprising at least one heat sink assembly, wherein the power assembly comprises a motor, and wherein the heat sink assembly is a fan carried by the motor.

9. The power tool host of claim 4, further comprising at least one heat sink assembly, wherein the power assembly comprises a motor, and wherein the heat sink assembly is a fan carried by the motor.

10. The power tool host of claim 5 or 6, further comprising at least one heat sink assembly, the power assembly comprising a motor, the heat sink assembly being a fan carried by the motor.

11. The power tool host of claim 1, further comprising a battery pack, the housing body including at least a second grip, the battery pack being removably positioned in the battery compartment, the second grip being positioned above the battery compartment.

12. The power tool main body according to claim 11, wherein a rear end face of the battery pack placed in the battery compartment protrudes from the opening of the battery compartment, the rear end face of the battery pack not exceeding a rear end face of the second grip member.

13. A power tool comprising a power tool main body as claimed in any one of claims 1 to 9 and a blade assembly removably mounted to a first body portion of the power tool main body, the blade assembly extending from the first body portion to an external space, the blade assembly being removably connected to and driven by the power assembly.

14. A power tool host, wherein the power tool host is adapted to be powered by a battery pack, comprising:

the shell body is provided with one or more air inlets, at least one air outlet and an air flow channel, wherein the air flow channel is communicated with an external space through the air inlets and the air outlets, and the shell body comprises at least one second holding piece; and

a power assembly, wherein the power assembly comprises a motor and a transmission assembly in transmission connection with the motor, wherein the transmission assembly is driven by the motor, the motor is arranged above the transmission assembly, the second holding piece is arranged above the battery compartment, and the transmission assembly and the battery compartment are arranged along the length direction of the shell main body;

the blade assembly is detachably arranged on the first main body part of the power tool main machine, extends from the first main body part to the external space, is detachably connected with the power assembly and is driven by the power assembly.