WO2022077557A1

WO2022077557A1 - Backpack work tool

Info

Publication number: WO2022077557A1
Application number: PCT/CN2020/123981
Authority: WO
Inventors: 魏娟; 张晨
Original assignee: 苏州科瓴精密机械科技有限公司
Priority date: 2020-10-15
Filing date: 2020-10-27
Publication date: 2022-04-21
Also published as: CN213546474U

Abstract

A backpack work tool, comprising: a backpack body support, a power mechanism, configured in the backpack body support, and used for outputting mechanical energy when the work tool works; and a power supply assembly, comprising a power supply mounting base and a battery pack, the battery pack being assembled into the power supply mounting base, the power supply assembly being integrally detachably mounted on the backpack body support. The backpack body support and the power supply mounting base are independently formed, respectively, and the processing difficulty is low; the power supply assembly has strong universality; the difficulty of integral assembly and disassembly of the work tool is reduced, and the work tool is easy to assemble, and is simple and convenient; especially during maintenance, the power supply assembly can be integrally disassembled from the backpack body support, and is convenient and quick to disassemble, thereby facilitating rapid troubleshooting, and greatly improving the efficiency.

Description

knapsack work tool

technical field

The utility model relates to a backpack-type working tool, which belongs to the technical field of working tool devices.

Background technique

Knapsack-type work tools, also known as backpack-type work tools, are generally work tools that operators can carry with them for functional operations by carrying them on their shoulders, one shoulder, and diagonally. For working tools, it is more labor-saving, hands-free, and easy to operate. According to the different functions mentioned above, the common knapsack tools currently on the market include knapsack blowers, knapsack blowers, knapsack lawn mowers, knapsack sprayers and so on.

In the existing knapsack work tool, the battery pack is detachably fixed in the power supply mounting seat, and the power supply mounting seat is usually integrated with the main body bracket, that is, the power supply mounting seat is directly formed on the main body bracket, and the power supply mounting seat cannot be removed from the main body bracket. The main body bracket is disassembled, wherein the disassembly in this application refers to the non-destructive or non-violent separation method between the power supply mounting seat and the main body bracket, excluding the power supply mounting seat and the main body bracket. Destructive or violent separation in which a structure is damaged.

Due to the non-detachable connection structure between the power supply mount and the main body bracket, on the one hand, the configuration of the main body bracket is complicated, and the processing difficulty is increased; on the other hand, the versatility of the battery pack in different products is poor; The overall disassembly and assembly of the tool is difficult, especially when overhauling the power mechanism in the main body bracket, each part including the battery pack needs to be disassembled one by one, which is inconvenient to operate and has low efficiency.

SUMMARY OF THE INVENTION

In order to solve at least one of the problems in the prior art, the purpose of the present invention is to provide a backpack-type working tool, the mounting seat of the battery pack of which can be disassembled from the main body bracket non-destructively.

In order to achieve the purpose of the above utility model, an embodiment provides a knapsack working tool, including:

Carry the main body bracket;

a power mechanism, which is arranged in the carrying body bracket, and is used for outputting mechanical energy when the working tool is working;

a power supply assembly, including a power supply mounting seat and a battery pack, wherein the battery pack can be assembled in the power supply mounting seat;

The power supply assembly is integrally detachably mounted on the carrying body bracket.

As a further improvement of an embodiment of the present invention, the piggyback main body bracket includes a main casing covering the power mechanism and a mounting body located outside the main casing;

The power supply mounting seat includes a first shell seat and a second shell seat, and the edge of the first shell seat and the edge of the second shell seat are snap-fitted and connected to the outside of the mounting body together with a hoop.

As a further improvement of an embodiment of the present invention, a mounting hole adapted to the mounting body is formed between the edge of the first shell seat and the edge of the second shell seat, and the mounting hole is formed on the The first notch groove on the edge of the first shell seat and the second notch groove formed on the edge of the second shell seat are enclosed and formed.

As a further improvement of an embodiment of the present invention, the mounting body is configured as a hollow tube body, and an electrical wire is passed through it;

The working tool further includes an operation handle, the operation handle includes an operation member for receiving an operation command, one end of the electrical wire is connected to the power mechanism, and the other end of the electric wire is connected to the operation member.

As a further improvement of an embodiment of the present invention, the power supply mounting base has two side walls facing left and right, and each of the two side walls is formed with one of the mounting holes and corresponds to the mounting body one-to-one.

As a further improvement of an embodiment of the present invention, the hole wall of the mounting hole and the outer wall of the mounting body are provided with concave-convex structures that are snap-fitted to each other, and the concave-convex structure prevents the mounting body from being detached outwardly Open the mounting hole or go deep into the mounting hole.

As a further improvement of an embodiment of the present invention, the first shell seat and the second shell seat are relatively fastened along a first direction, and a plurality of screws are used between them to advance or retreat along the first direction. Tighten the connection.

As a further improvement of an embodiment of the present invention, the power supply mounting base has a power supply connection terminal, a battery pack insertion port, and an assembly cavity communicating with the battery pack insertion interface, and the power supply connection terminal is exposed to the assembly cavity Inside;

The battery pack can be inserted into the assembling cavity or removed from the assembling cavity through the battery pack insertion port, wherein the battery pack is electrically connected to the power matching terminal when the battery pack is mounted on the power supply mounting seat. connected, the battery pack is separated from the power supply terminal when it is removed from the power supply mounting seat;

The power supply assembly further includes a locking mechanism, the locking mechanism is movably mounted on the power supply mounting seat and has a locked state and an unlocked state;

In the locked state, the locking mechanism at least partially protrudes into the assembly cavity to lock the battery pack assembled in the power supply mounting seat;

In the unlocked state, the locking mechanism unlocks the battery pack to allow the battery pack to be removed from the power mount.

As a further improvement of an embodiment of the present invention, the locking mechanism includes:

an unlocking key for receiving an unlocking operation outside the power supply mounting seat to make the locking mechanism change from the locked state to the unlocked state;

The hook has a trigger end matched with the unlocking key and a hook end matched with the battery pack. In the locked state, the hook end protrudes downward into the assembly cavity, In the unlocked state, under the push of the unlocking key to the trigger end, the hook end at least partially retracts upward out of the assembly cavity;

The elastic reset member is connected between one of the unlocking key and the hook and the power supply mounting seat, so as to drive the locking mechanism to reset from the unlocking state to the locking state.

As a further improvement of an embodiment of the present invention, the battery pack can be inserted into the assembly cavity along a first direction through the battery pack insertion port;

The power supply connection terminal includes a spring terminal opposite to the battery pack insertion port along the first direction. When the locking mechanism changes from the locked state to the unlocked state, the spring terminal Push the battery pack to pop out to the battery pack insertion port.

As a further improvement of an embodiment of the present invention, the working tool is set as a hair dryer;

The power mechanism is a turbo blower and its rotation axis extends in the front-rear direction, and the carrying body support includes a volute that covers the turbo blower;

The power supply assembly is mounted above the top of the piggyback body bracket.

Compared with the prior art, an embodiment of the present invention has at least the following beneficial effects: the power supply assembly is detachably mounted on the main body bracket as a whole, on the one hand, the main body bracket and the power supply mounting seat are independently formed, and the processing difficulty is greatly reduced; On the other hand, the power supply assembly can be applied to different work tool products, and has strong versatility; on the other hand, the overall assembly and disassembly of the work tool is less difficult, easy to assemble, simple and convenient, especially for all parts that carry the main body bracket. When the power mechanism is overhauled, the power supply assembly can be disassembled from the main body support as a whole, which is convenient and quick to disassemble, convenient and quick to troubleshoot, and greatly improves the efficiency.

Description of drawings

1 is a schematic structural diagram of a knapsack-type working tool from a side view angle according to an embodiment of the present invention;

2 is an exploded perspective view of a backpack-type work tool according to an embodiment of the present invention;

Fig. 3 is the enlarged view of A area in Fig. 2;

4 is a schematic three-dimensional structural diagram of a power supply assembly according to an embodiment of the present invention;

5 is an exploded perspective view of a power supply assembly according to an embodiment of the present invention;

6 is a schematic structural diagram of a power supply assembly from a rear view angle according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view along the B-B section line in FIG. 6 .

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and the structural, method, or functional transformations made by those of ordinary skill in the art according to these embodiments are all included in the protection scope of the present invention.

Referring to FIGS. 1 to 7 , the present embodiment provides a knapsack type working tool 100 , that is, the working tool 100 is carried by an operator in a carrying manner to perform functional operations when in use.

Referring to FIG. 1 , the working tool 100 specifically includes a strap assembly, a carrying body 3 , a power source assembly 4 , an operating handle 2 and a work execution assembly 1 .

Wherein, the strap assembly is used for the operator to carry the carrying body 3 on his body when using the working tool 100 . The harness assembly encircles the operator's body, and the main weight of the carrying body 3 is carried at its encirclement. For the harness assembly, it can be arranged around the waist of the operator and configured as a waist belt; it can also be arranged around the shoulders of the operator and configured as a shoulder strap. The shoulder straps surrounding the operator's shoulders may be located on one side of the body and configured as a single-shoulder strap, or may be placed diagonally across the body and configured as an oblique-straddle shoulder strap, or may be located on the side of the body. The sides are constructed as double shoulder straps.

The carrying body 3 is supported on the operator's body through the harness assembly, and is generally configured as the core body of the work tool 100 to achieve its functional operation. The carrying main body 3 includes a carrying main body support 31 and a power mechanism arranged in the carrying main body support 31: the power mechanism can output mechanical energy to realize the functional operation of the working tool 100; the carrying main body support 31 can construct part of the appearance of the working tool 100 , which covers the power mechanism to protect the power mechanism, and can also assist in forming a passage (eg, an air duct described later) required for the functional operation of the working tool 100 .

The work execution assembly 1 is usually connected to the carrying body 3 and extends longitudinally forward from the carrying body 3 , that is, one end 12 of the work execution assembly 1 is connected to the carrying body 3 , and the other end 12 opposite to the end 12 is connected to the carrying body 3 . The end portion 11 extends forward to the front of the operator, so that when the working tool 100 is in use, the end portion 11 can perform related functional operations on the object to be operated.

The operation handle 2 is usually disposed on the work execution assembly 1 . Basically, the operation handle 2 can be held by the operator so as to facilitate various operation and control of the work tool 100 when the work tool 100 is working. For example, the operator can operate the handle 2 by The position of the end portion 11 of the job execution assembly 1 can be adjusted, so that the end portion 11 changes for the corresponding object to be operated. For another example, as shown in this embodiment, the operating handle 2 includes an operating member 21 that receives an operating instruction, 22. The operating

members

21 and 22 can be electrically connected to the driving member of the power mechanism (eg, connected to the electric motor described later, or connected to the igniter of the fuel engine, etc.) and the power supply assembly 4, thus, when the operator touches the operating

members

21, 22, the operating

members

21, 22 can receive the operation instructions corresponding to the touch action, and then control the work tool to work or stop the work, and make the said The working state of the power mechanism is controlled based on the operation command.

2 and 3 , the power supply assembly 4 includes a power supply mount 41 and a battery pack 42 . The power supply mounting seat 41 is used for fixedly assembling and supporting the battery pack 42 , which constitutes a basic support frame of the power supply assembly 4 ;

As mentioned in the background art, in the prior art, the power supply mount is generally integrated with the carrying body bracket, resulting in complex structure of the carrying main body support, difficult processing, poor versatility of the battery pack installation structure, and difficulty in the overall disassembly and assembly of the carrying body. A series of problems such as large size, cumbersome operation and low efficiency.

Therefore, in the working tool 100 of the present application, the power supply assembly 4 of the power supply assembly 4 is detachably mounted on the carrying main body bracket 31 as a whole, that is, the power supply mounting seat 41 and the carrying main body bracket 31 are disposed separately. Therefore, compared with the prior art, On the one hand, the main body bracket 31 and the power supply mounting seat 41 are formed independently, and the processing difficulty is greatly reduced; on the other hand, the power supply assembly 4 can be applied to different work tool products, and has strong versatility; on the other hand, the work tool 100 The difficulty of the overall assembly and disassembly is reduced, the assembly is easy, simple and convenient, especially when the power mechanism in the piggyback main body bracket 31 is overhauled, the power supply assembly 4 can be disassembled from the piggyback main body bracket 31 as a whole, and the disassembly is convenient and fast. , it is convenient and quick to troubleshoot, and the efficiency is greatly improved.

Wherein, disassembly in this application refers to a non-destructive or non-violent separation method between two components (such as the power supply assembly 4 and the carrying body bracket 31 ) A destructive or violent separation method in which either structure of the component 4 and the carrying body bracket 31) is damaged.

Specifically, referring to FIGS. 2-5 , the piggyback main body bracket 31 includes a main casing 312 covering the power mechanism and a mounting body 311 located outside the main casing 312 ; the power supply mounting base 41 includes a first casing base 411 and a second casing base 411 412 , the edge 4110 of the first housing 411 is fastened to the edge 4120 of the second housing 412 . In this embodiment, the first shell seat 411 and the second shell seat 412 are relatively fastened in front and back, that is, the first shell seat 411 is located in front of the second shell seat 412, and the edge 4110 of the rear end of the first shell seat 411 is connected to the front of the second shell seat 412. The edge 4120 of the front end of the second shell seat 412 is buckled and connected; of course, in a variant embodiment, if the first shell seat 411 and the second shell seat 412 can also be relatively buckled up and down, or left and right relative to each other, or in other relative ways Orientation snap.

The edge 4110 of the first housing 411 and the edge 4120 of the second housing 412 are clamped and fixed to the outside of the mounting body 311 together, that is, the mounting body 311 is clamped between the edge 4110 of the first housing 411 and the second housing Between the edges 4120 of the 412, the power supply mounting seat 41 is surrounded by the mounting body 311, thereby realizing that the power supply mounting seat 41 is fixedly mounted on the main body bracket 31, so that the power supply assembly 4 as a whole is assembled with the power supply mounting seat 41. On the carrying body 3 , this hoop installation method is easy to disassemble, has a simple structure, and the power installation seat 41 has strong versatility on different carrying bodies 3 .

Further, between the edge 4110 of the first housing 411 and the edge 4120 of the second housing 412 , a mounting hole 410 for fitting the mounting body 311 is formed. In detail, the edge 4110 of the first housing 411 has a first notch groove 4102 , the edge 4120 of the second housing 412 has a second notch groove 4101 , and the edge 4110 of the first housing 411 and the second housing 412 When the edges 4120 of the first notch are fastened together, the first notch groove 4102 and the second notch groove 4101 are just opposite to each other, the installation hole 410 is enclosed by the first notch groove 4102 and the second notch groove 4101, and the installation body 311 is accommodated in the installation hole 410.

In this embodiment, the mounting hole 410 and the mounting body 311 are set in a corresponding circular shape. Of course, the shape of the two is not limited to this, and may also be set in a square, hexagonal or any other suitable shape.

Preferably, the mounting body 311 is configured as a hollow tube body in this embodiment, and an electric wire 5 is passed through it. One end of the electric wire 5 is connected to the power mechanism, and the other end of the electric wire 5 is connected to the operation The handle 2 is specifically connected to the operating

members

21 and 22 of the operating handle 2 , that is, the operating

members

21 and 22 can be electrically connected to the power mechanism through the electrical wires 5 , so as to realize the manipulation of the power mechanism through the operating

members

21 and 22 working status. In this way, the mounting body 311 is configured as a protection tube of the electric wire 5, and the power supply mounting base 41 is fixedly installed on the protection tube of the electric wire 5, so as to realize the integrated multi-purpose of the protection tube, the assembly is simple and fast, and the versatility is strong. Of course, the specific arrangement of the mounting body 311 is not limited to this. For example, in other embodiments, the mounting body 311 may not be used as a protection tube for the electrical wire 5 , but be configured as a rod-shaped cantilever erected outside the main casing 312 .

Further, in this embodiment, the power supply mounting base 41 has two side walls opposite to the left and right, and each of the two side walls is formed with a mounting hole 410 that corresponds to the mounting body 311 one-to-one. That is, the left side wall of the power supply mounting seat 41 is provided with a mounting hole 410, and the mounting hole 410 is matched with the mounting body 311-2 as shown in the figure; the right side wall of the power supply mounting seat 41 is provided with A mounting hole 410, the mounting hole 410 is matched with the mounting body 311-1 as shown in the figure.

In addition, the hole wall of the mounting hole 410 and the outer wall of the mounting body 311 are provided with a concave-convex structure that is snap-fitted to each other, and the concave-convex structure prevents the mounting body 311 from escaping from the mounting hole 410 outwardly or inwardly penetrating the mounting hole 410 In other words, the concave-convex structure is used to limit the position of the mounting body 311 and the mounting hole 410 in the left and right directions, preventing the mounting body 311 from moving left and right relative to the mounting hole 410, so that, on the one hand, the mounting body 311 is prevented from being separated from the outside. The mounting holes 410 can ensure the stability of the installation between the power supply mounting base 41 and the mounting body 311 , prevent the power supply mounting base 41 from detaching from the mounting body 311 , and prevent the mounting body 311 from going deep into the mounting holes 410 , which can avoid the mounting body 311 Accidentally penetrates into the interior of the power supply mounting seat 41 and bruises important components located in the power supply mounting seat 41 (for example, the control circuit board 43 described later).

Preferably, the outer wall of the mounting body 311 is provided with a concave-convex structure 3110 , and the concave-convex structure 3110 extends around the circumference of the mounting body 311 to form an annular groove. Correspondingly, the concave-convex structure of the hole wall of the mounting hole 410 is set to match the concave-convex structure 3110 When the edge 4110 of the first housing 411 and the edge 4120 of the second housing 412 are hooped and fixed to the outside of the mounting body 311 together, the annular rib is just embedded in the annular groove.

Further, the first shell seat 411 and the second shell seat 412 are fastened and connected by several screws. Specifically, in this embodiment, two threaded holes 4121 are provided near the left and right ends of the upper portion of the second housing base 412 , and the lower portion of the second housing base 412 has two threaded holes 4122 ; correspondingly, the first housing base 411 has two threaded holes 4122 . There are two threaded holes 4111 corresponding to the two threaded holes 4121 one-to-one near the left and right ends of the upper part, and the lower part of the first housing 411 has two threaded holes 4112 corresponding to the two threaded holes 4122 one-to-one; two screws 91 are screwed into the threaded

holes

4111 and 4121, respectively, and the two screws 92 are screwed into the threaded

holes

4112 and 4122, respectively, so that the first housing 411 and the second housing 412 are securely connected .

Further preferably, the first shell seat 411 and the second shell seat 412 are relatively fastened along the first direction, and correspondingly, the

screws

91 and 92 are screwed in or out along the first direction to fasten the first shell. The base 411 and the second base 412, in this way, the

screw

91, 92 can increase with the screw precess, so that the hoop is fixed between the edge 4110 of the first base 411 and the edge 4120 of the second base 412 The position of the mounting body 311 is firmer, and the hoop is tighter. As mentioned above, in this embodiment, the first housing seat 411 and the second housing seat 412 are relatively fastened in front and rear, and accordingly, the

screws

91 and 92 are screwed in or out in the front and rear directions, so that the mounting body 311 is removed from the front and rear directions. The edge 4110 of the first housing 411 is tightly hooped with the edge 4120 of the second housing 412 . Of course, in the variant embodiment, the relative orientation of the first housing seat 411 and the second housing seat 412 is changed, and the precession directions of the

screws

91 and 92 are also changed synchronously, which will not be repeated.

Further, the power supply assembly 4 can be supported on the piggyback main body bracket 31 , specifically, installed above the top of the piggyback main body bracket 31 , so that the installation is convenient and the layout is beautiful.

Further, referring to FIGS. 4 to 7 , the power supply mounting base 41 has a battery pack insertion port 4130 and an assembly cavity 413 communicating with the battery pack insertion port 4130 , and the battery pack 42 can be inserted into the assembly cavity 413 through the battery pack insertion port 4130 or from the assembly cavity 413 . The assembly cavity 413 is removed; the power supply mounting base 41 also has

power matching terminals

452 and 453 , and the

power matching terminals

452 and 453 are exposed in the assembly cavity 413 .

When the battery pack 42 is assembled on the power supply mounting seat 41 , that is, when it is inserted into the mounting cavity 413 , the battery pack 42 is in its mounting position relative to the power supply mounting seat 41 , and the battery pack 42 is in contact with the power

supply mating terminals

452 and 453 . , so that the electrical energy of the battery pack 42 can be output to the power mechanism or other electrical components of the work tool 100 through the

power supply terminals

452 and 453 ; when the battery pack 42 is removed from the power supply mounting seat 41 , it is also When 413 is removed, the battery pack 42 is in its detached position relative to the power supply mount 41 , and the battery pack 42 is separated from the

power supply terminals

452 and 453 , so that the battery pack 42 no longer provides power to the work tool 100 .

Preferably, the power supply assembly 4 further includes a control circuit board 43 disposed inside the power supply mounting base 41 . Specifically, in this embodiment, the first housing base 411 and the second housing base 412 are buckled together to enclose an internal cavity, and control the The circuit board 43 is accommodated in the cavity, and is fixedly assembled with the first housing 411 and the second housing 412 .

The power supply assembly 4 further includes a terminal bracket 451 fixed on the circuit control board 43 , and the power matching terminal 453 is mounted on the terminal bracket 451 and extends upward into the assembly cavity 413 .

Further, the power supply assembly 4 further includes a locking mechanism, which is movably mounted on the power supply mounting base 41 and has a locked state and an unlocked state. 7 , in the locked state, the locking mechanism at least partially protrudes into the assembly cavity 413 , thereby locking the battery pack 42 assembled in the power supply mounting seat 41 , that is, locking the battery pack 42 In the assembling position; in the unlocking state, the locking mechanism unlocks the battery pack 42, thereby allowing the battery pack 42 to be removed from the power supply mounting seat 41, that is, allowing the battery pack 42 to move from the assembling position to the battery pack 42. Remove position movement.

Specifically, the locking mechanism includes an unlock key 441 , a hook 442 and an elastic reset member 443 .

The unlocking key 441 is exposed on the upper portion of the power supply mounting base 41, and receives an unlocking operation outside the power supply mounting base 41, so that the locking mechanism changes from the locked state to the unlocked state. When the operator needs to remove the battery pack 42 from the power supply mounting seat 41 , the operator can make the locking mechanism release the battery pack 42 through the unlocking operation of pressing the unlock key 441 downward.

The hook 442 is provided as a single piece, which has a trigger end 4422 matched with the unlock key 441 and a hook end 4421 matched with the battery pack 42 . Specifically, the trigger end 4422 is located below the unlock key 441 ; the upper surface of the battery pack 42 has a card slot 420 . In the locked state, the hook end 4421 protrudes downward into the assembling cavity 413, and if the battery pack 42 is in the assembling position, the hook end 4421 is just inserted into the slot 420 to prevent The battery pack 42 is withdrawn from the assembly cavity 413; in the unlocked state, the unlock key 441 is pressed down, and under the push of the unlock key 441 to the trigger end 4422, the trigger end 4422 moves downward, and the corresponding hook end 4421 moves upward The battery pack 42 is no longer locked by the hook end 4421 by being lifted and at least partially retracted out of the assembly cavity 413 .

The elastic reset member 443 is connected between one of the unlocking key 441 and the hook 442 and the power supply mounting base 41 . In the unlocked state, under the unlocking operation of the operator, the elastic restoring member 443 is forced to elastically deform; when the unlocking operation of the operator is cancelled, for example, when the finger is removed from the unlocking key 441, the elastic restoring member 443 itself is elastic. reset to drive the locking mechanism to reset from the unlocked state to the locked state.

In this embodiment, the elastic reset member 443 is a compression spring clamped between the trigger end 4422 of the hook 442 and the power supply mounting base 41 . Of course, in the modified embodiment, the setting position of the elastic reset member 443 is not limited to this. , and its specific type is not limited to compression springs, but can also be tension springs, torsion springs or other elastic bodies.

Further, in this embodiment, the battery pack 42 can be inserted into the assembly cavity 413 from the rear to the front through the battery pack insertion port 4130 ; correspondingly, the power matching terminal 452 includes a front-to-rear direction opposite to the battery pack insertion port 4130 . The provided spring terminal, the spring terminal is specifically arranged at the front bottom end of the assembly cavity 413, when the locking mechanism changes from the locked state to the unlocked state, that is, when the operator presses the unlock key 441 When the hook end 4421 exits the assembly cavity 413 upward at least partially, the battery pack 42 is unlocked at this time, and the spring terminal pushes the battery pack 42 from the front to the rear to eject the battery pack insertion port 4130, so that by pressing a button The unlocking key 441 can realize the automatic ejection of the battery pack 42 after unlocking, which is convenient for the battery pack 42 to be removed from the power supply mounting seat 41, and the installation and removal operations of the battery pack 42 are simple and convenient.

Further, based on the different types of functions that can be achieved by the power mechanism, the working tool 100 can be embodied as a variety of different products. In this embodiment, referring back to FIG. 1 to FIG. 2 , the working tool 100 is set as a hair dryer whose functional operation is air blowing. Specifically, the power mechanism includes a turbo blower and a driving member that drives the turbo blower to rotate, and the rotational axis X of the turbo blower extends in the front-rear direction; the main casing 312 is at least partially configured as a volute that wraps the turbo blower; The job execution assembly 1 is configured as an air outlet pipe extending forward from the air outlet of the volute. When the working tool 100 starts to work, the turbine fan rotates around the rotation axis X, and drives the airflow to flow forward through the air outlet pipe along the air duct enclosed by the volute, until it reaches the front end of the air outlet pipe. The air outlet at part 11 blows out.

Of course, in a variant embodiment, the work tool 100 may also be configured as a suction fan, a blower, a lawn mower, a sprayer, etc. Correspondingly, the power mechanism and the work execution assembly 1 are configured according to the specific settings of the work tool 100 . Corresponding changes are made, which will not be repeated here.

In the embodiment of the drawings, the driving member is set as a fuel engine, and when the work tool 100 starts to work, the igniter of the fuel engine is electrically connected to the battery pack 42 to start, and then outputs mechanical energy to drive the turbine fan It rotates around the rotation axis X; of course, the driving member of this embodiment is not limited to this, for example, in a variant embodiment, the driving member can be set as a motor, and when the working tool 100 starts to work, the motor and the battery are connected to each other. The pack 42 is electrically connected and obtains electrical energy from the battery pack 42 , and then converts the electrical energy into mechanical energy and outputs it to drive the turbine fan to rotate around the rotation axis X.

Compared with the prior art, the present embodiment has the following beneficial effects: the power supply assembly 4 is integrally detachably mounted on the carrying main body bracket 31, on the one hand, the carrying main body bracket 31 and the power supply mounting seat 41 are independently formed, and the processing difficulty is greatly reduced; On the other hand, the power supply assembly 4 can be applied to different work tool products, and has strong versatility; on the other hand, the overall assembly and disassembly of the work tool 100 is less difficult, easy to assemble, simple and convenient, especially for carrying the main body bracket When the power mechanism in 31 is overhauled, the power supply assembly 4 can be disassembled from the carrying body bracket 31 as a whole, which is convenient and quick to disassemble, facilitates quick troubleshooting, and greatly improves the efficiency.

It should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole, and each The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

The detailed descriptions listed above are only specific descriptions for the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Changes should be included within the scope of protection of the present invention.

Claims

A knapsack work tool comprising:

Carry the main body bracket;

a power mechanism, which is arranged in the carrying body bracket, and is used for outputting mechanical energy when the working tool is working;

a power supply assembly, including a power supply mounting seat and a battery pack, wherein the battery pack can be assembled in the power supply mounting seat;

It is characterized in that, the power supply assembly as a whole is detachably mounted on the carrying body bracket.
The knapsack type work tool according to claim 1, wherein the knapsack main body bracket comprises a main casing covering the power mechanism and a mounting body located outside the main casing;

The power supply mounting seat includes a first shell seat and a second shell seat, and the edge of the first shell seat and the edge of the second shell seat are snap-fitted and connected to the outside of the mounting body together with a hoop.
The backpack-type power tool according to claim 2, wherein a mounting hole adapted to the mounting body is formed between the edge of the first housing base and the edge of the second housing base, and the mounting The hole is formed by a first notch groove formed on the edge of the first housing base and a second notch groove formed on the edge of the second housing base.
The knapsack type work tool according to claim 3, wherein the mounting body is configured as a hollow pipe body, and an electrical wire is passed through it;

The working tool further includes an operation handle, the operation handle includes an operation member for receiving an operation command, one end of the electrical wire is connected to the power mechanism, and the other end of the electric wire is connected to the operation member.
The knapsack type working tool according to claim 3, wherein the power supply mounting base has two side walls facing left and right, and each of the two side walls is formed with one of the mounting holes and is respectively connected with the mounting hole. One-to-one correspondence.
The knapsack working tool according to claim 3, wherein the hole wall of the mounting hole and the outer wall of the mounting body are provided with concave-convex structures that are snap-fitted to each other, and the concave-convex structures are used to prevent the The mounting body disengages from the mounting hole outwards or penetrates into the mounting hole inwardly.
The knapsack working tool according to claim 2, wherein the first shell seat and the second shell seat are relatively fastened along a first direction, and a plurality of screws are used therebetween along the first direction. Tighten the connection by screwing in or out.
The knapsack type work tool according to claim 1, wherein the power supply mounting base has a power supply connection terminal, a battery pack insertion interface, and an assembly cavity connected to the battery pack insertion interface, and the power supply connection terminal exposed in the assembly cavity;

The battery pack can be inserted into the assembling cavity or removed from the assembling cavity through the battery pack insertion port, wherein the battery pack is electrically connected to the power matching terminal when the battery pack is mounted on the power supply mounting seat. connected, the battery pack is separated from the power supply terminal when it is removed from the power supply mounting seat;

The power supply assembly further includes a locking mechanism, the locking mechanism is movably mounted on the power supply mounting seat and has a locked state and an unlocked state;

In the locked state, the locking mechanism at least partially protrudes into the assembly cavity to lock the battery pack assembled in the power supply mounting seat;

In the unlocked state, the locking mechanism unlocks the battery pack to allow the battery pack to be removed from the power mount.
The knapsack work tool of claim 8, wherein the locking mechanism comprises:

an unlocking key for receiving an unlocking operation outside the power supply mounting seat to make the locking mechanism change from the locked state to the unlocked state;

The hook has a trigger end matched with the unlocking key and a hook end matched with the battery pack. In the locked state, the hook end protrudes downward into the assembly cavity, In the unlocked state, under the push of the unlocking key to the trigger end, the hook end at least partially retracts upward out of the assembly cavity;

The elastic reset member is connected between one of the unlocking key and the hook and the power supply mounting seat, so as to drive the locking mechanism to reset from the unlocking state to the locking state.
The knapsack working tool according to claim 1, wherein the working tool is configured as a hair dryer;

The power mechanism is a turbo blower and its rotation axis extends in the front-rear direction, and the piggyback body bracket includes a volute that covers the turbo blower;

The power supply assembly is mounted above the top of the piggyback body bracket.