WO2024114818A1

WO2024114818A1 - Knapsack power tool

Info

Publication number: WO2024114818A1
Application number: PCT/CN2023/136168
Authority: WO
Inventors: 闫明星
Original assignee: 宝时得科技（中国）有限公司
Priority date: 2022-12-02
Filing date: 2023-12-04
Publication date: 2024-06-06
Also published as: CN118127973A

Abstract

The present invention relates to a knapsack power tool, comprising: an operation assembly, a knapsack assembly and a connector, wherein the operation assembly comprises an air cylinder, two ends of which are each provided with an air intake portion for air intake and an air output portion for air output; and the knapsack assembly is configured for a user to carry same on their back, and comprises a back surface, and two adjacent side faces, which are each provided with a first connecting portion and a second connecting portion. The operation assembly is connected to the knapsack assembly by means of the connector, and the connector is configured to enable the operation assembly to switch between the first connecting portion and the second connecting portion for fitting, and comprises two opposite ends, wherein one end can be detachably connected to the knapsack assembly, and the other end can be connected to the operation assembly. The knapsack assembly is provided with an energy supply unit, which is configured to provide electric energy for the operation assembly and is connected to an electric interface of the operation assembly by means of a conductive cable that is external to the connector, so as to supply power to the operation assembly. As such, the use requirements of people with different operation habits can be met.

Description

Backpack Power Tools

Cross-references Related references

This application claims the following priority:

A Chinese patent application with application number 202211537845.5 and invention name “Backpack Power Tool”, filed on December 2, 2022.

The entire contents of the above priority documents are incorporated into the present application by reference.

Technical Field

The present invention relates to the technical field of electric tools, in particular to a backpack electric tool.

Background technique

Backpack work tools, also known as backpack work tools, are generally tools that operators carry with them on their shoulders, shoulders, or across their bodies to perform functional operations. This method of carrying is more labor-saving, hands-free, and convenient to operate than hand-held work tools. Depending on the aforementioned functional operations, the common backpack work tools on the market currently include backpack blowers, backpack sprayers, brush cutters, lawn mowers, pruning machines, chain saws, etc. Backpack blowers are mainly used for garden maintenance work and can quickly clean up garbage such as fallen leaves and sand and gravel.

A backpack hair dryer generally includes a hair dryer and a battery backpack, and in order to be ergonomic, the existing backpack hair dryer is usually arranged on the right side of the battery backpack, and the hair dryer extends in front of the body. When the operator uses it, the backpack is carried on the back, and the hair dryer is operated by the right hand to perform the blowing operation.

However, this backpack hair dryer structure cannot be applied to people with different operating habits, such as left-handed users, and is also inconvenient to store.

Summary of the invention

Based on this, it is necessary to provide a backpack electric tool that can meet the needs of people with different operating habits and is easy to store.

The present application provides a backpack electric tool, comprising:

The operating assembly comprises an air cylinder, wherein two ends of the air cylinder are respectively provided with an air inlet for air intake and an air outlet for air discharge;

A carrying component, used for a user to carry it on his back;

and a connecting member, through which the working assembly is connected to the carrying assembly;

The carrying assembly comprises a carrying back portion for contacting the back of a user and a first connecting portion and a second connecting portion respectively arranged on the left and right sides of the carrying back portion;

The connecting member is configured to allow the working component to be switched between the first connecting portion and the second connecting portion, and the connecting member includes two opposite ends, one end of which can be detachably connected to the carrying component, and the other end of which can be connected to the working component;

The backpack component is provided with an energy supply unit for providing electrical energy to the working component. The energy supply unit is electrically connected to the working component via a conductive cable externally arranged on the connecting piece to supply power to the working component.

In one embodiment, the connecting member is movably arranged relative to the working component, and can be selectively moved to a first connecting position and a second connecting position relative to the working component;

The first connection position is configured such that when the connecting member is in the first connection position, the operating assembly is suitable for connecting to the first connection portion through the connecting member;

The second connection position is configured as follows: when the connecting member is in the second connection position, the operating component is suitable for being connected to the second connection portion through the connecting member.

In one embodiment, the working component includes a third connecting portion for connecting the connecting member, and the connecting member is detachably connected to the third connecting portion; the third connecting portion includes a first installation position and a second installation position, and the connecting member is connected to the third connecting portion at the first installation position, so that the connecting member is located at the first connecting position relative to the working component; the connecting member is connected to the third connecting portion at the second installation position, so that the connecting member is located at the second connecting position relative to the working component.

In one embodiment, one end of the connecting member is provided with a first engaging structure, the other end of the connecting member is provided with a second engaging structure, the first connecting portion is provided with a third engaging structure, the second connecting portion is provided with a fourth engaging structure, and the third connecting portion is provided with a fifth engaging structure;

The first engaging structure can be locked and matched with the third engaging structure, the fourth engaging structure and the fifth engaging structure respectively; the second engaging structure can be locked and matched with the third engaging structure, the fourth engaging structure and the fifth engaging structure respectively.

In one embodiment, a locking assembly is provided between the first connection part and/or the second connection part and the connecting member, and the locking assembly includes a locking part and an unlocking part. The connecting member includes a relatively locked locking state and a relatively detachable unlocking state relative to the first connection part and/or the second connection part; the locking part is used to put the connecting member in a locked state relative to the first connection part and/or the second connection part, and the unlocking part is used to put the connecting member in an unlocked state relative to the first connection part and/or the second connection part.

In one embodiment, the locking portion includes a protruding clamping portion and a clamping slot matched with the clamping portion, the clamping portion is engaged with the clamping slot, so that the connecting member is in the locked state relative to the first connecting portion and/or the second connecting portion; the unlocking portion is connected to the clamping portion and can drive the clamping portion to move, and the unlocking portion drives the clamping portion to move out of the clamping slot, so that the connecting member is in the unlocked state relative to the first connecting portion and/or the second connecting portion;

The clamping portion and the unlocking portion are arranged on one of the connecting member and the first connecting portion and/or the second connecting portion, and the clamping slot is arranged on the other one.

In one embodiment, a locking assembly is provided between the first connection part and/or the second connection part and/or the third connection part and the connecting member, and the locking assembly is used to realize the locking between the first engaging structure or the second engaging structure and the third engaging structure or the fourth engaging structure or the fifth engaging structure, and the locking assembly includes a locking part and an unlocking part, and the connecting member includes a relatively locked locking state and a relatively detachable unlocking state relative to the first connection part and/or the second connection part and/or the third connection part; the locking part is used to make the connecting member in a locked state relative to the first connection part and/or the second connection part and/or the third connection part, and the unlocking part is used to make the connecting member in an unlocked state relative to the first connection part and/or the second connection part and/or the third connection part.

In one embodiment, the locking portion includes a protruding clamping portion and a clamping slot matched with the clamping portion, the clamping portion is engaged with the clamping slot, so that the connecting member is in the locked state relative to the first connecting portion and/or the second connecting portion and/or the third connecting portion; the unlocking portion is connected to the clamping portion and can drive the clamping portion to move, and the unlocking portion drives the clamping portion to move out of the clamping slot, so that the connecting member is in the unlocked state relative to the first connecting portion and/or the second connecting portion and/or the third connecting portion;

The clamping portion and the unlocking portion are arranged on the connecting member and the first connecting portion and/or the second connecting portion And/or on one of the third connecting parts, the card slot is arranged on the other one.

In one embodiment, the connecting member is rotatably arranged relative to the working component and can be rotated to the first connecting position and the second connecting position.

In one embodiment, the connection between the connecting piece and the first connecting part and the second connecting part is an inside-outside connection, and the first connecting part and the second connecting part are both hollow cavity structures. One end of the connecting piece can be embedded in the hollow cavity to connect with the first connecting part and the second connecting part.

In one embodiment, the backpack power tool includes a storage state, in which the working component is connected to the backpack component through the connecting member, and the extension direction of the wind tube of the working component is substantially parallel to the longitudinal direction of the back face of the backpack component;

The connecting member also includes a third connection position relative to the working component or the carrying component, and the third connection position is configured as follows: when the connecting member is in the third connection position, the working component is suitable for being connected to the first connection part or the second connection part through the connecting member, and the extension direction of the wind tube of the working component is basically parallel to the longitudinal direction of the back surface of the carrying component.

In one embodiment, the backpack power tool further includes a working state, in which the working component is connected to the first connecting portion or the second connecting portion of the backpack component through the connecting member, and the extension direction of the wind tube of the working component is substantially perpendicular to the longitudinal direction of the back face of the backpack component;

A rotation limiting component is provided between the connecting member and the working component and/or the carrying component to prevent relative rotation between the working component and the carrying component in the working state and/or the storage state.

In one embodiment, the rotation limiting assembly includes a spline shaft and a spline sleeve that cooperates with the spline shaft to form a rotation limiting;

The spline shaft is arranged on one of the connecting member and the working component and/or the carrying component, and the spline sleeve is arranged on the other one.

In one of the embodiments, the operating component is a hair dryer, and the hair dryer includes an operating handle arranged above the air cylinder; the connecting member is connected to the hair dryer below the air inlet portion of the hair dryer.

In one embodiment, the energy supply unit includes a battery unit, the working component includes a circuit board for controlling the working component to perform a working task, and the battery unit is electrically connected to the circuit board through the conductive cable to supply power to the working component.

In one embodiment, the backpack assembly further includes two side surfaces adjacent to the backpack front surface, and the first connecting portion and the second connecting portion are respectively disposed on the two side surfaces.

In one of the embodiments, the energy supply unit is connected to the electrical interface of the operating component via the conductive cable to supply power to the operating component.

The present application also provides a backpack electric tool, the backpack electric tool comprising:

A carrying assembly, used for being carried on the back of a user, comprising a carrying body and two side surfaces adjacent to the carrying body, wherein the two side surfaces are respectively provided with a first connecting portion and a second connecting portion;

A connecting piece, through which the working assembly is connected to the carrying assembly;

The backpack component is provided with an energy supply unit for providing electrical energy to the working component. The unit is connected to the electrical interface of the operating component via a conductive cable externally disposed on the connecting piece to supply power to the operating component.

In one embodiment, the connecting member is connected to the operating component at the lower end of the air inlet portion of the operating component.

In one embodiment, the connecting member can be selectively positioned at a first connecting position and a second connecting position relative to the working component.

When the connecting member is in the first connecting position, the connecting member is connected to the first connecting portion;

When the connecting member is in the second connecting position, the connecting member is connected to the second connecting portion.

In one embodiment, the connecting member includes a connecting member rotation axis, and the connecting member can rotate relative to the working component around the connecting member rotation axis to be located at the first connecting position and the second connecting position.

In one embodiment, the operating component includes a third connecting portion, and the connecting member is detachably connected to the third connecting portion, and the first connecting position and the second connecting position are achieved by different connecting positions relative to the third connecting portion.

In one of the embodiments, the backpack electric tool is provided with an unlocking portion for detaching the connecting member from the backpack assembly.

In one embodiment, the unlocking portion is arranged on the connecting member.

In one embodiment, the connecting member can be sleeved with the first connecting portion or the second connecting portion.

In one embodiment, the carrying assembly includes a height direction in a working state, and the working assembly includes a longitudinal direction;

The working assembly includes a storage state, in which the longitudinal direction of the working assembly is substantially parallel to the height direction of the carrying assembly;

The working component is switched to the storage state by matching the connecting piece with the carrying component;

When the working component is in a working state or a storage state, the connection of the connecting piece prevents the working component from being connected to the carrying component in relative rotation.

In one embodiment, one of the connecting member and the working component and/or the carrying component is provided with a spline shaft, and the other is provided with a spline sleeve; the connecting member and the working component and/or the carrying component are connected by the spline shaft and the spline sleeve to prevent the working component and the carrying component from being connected to each other in relative rotation;

The connection between the spline shaft and the spline sleeve includes a first sleeve connection position and a second sleeve connection position;

When the connecting member and the working component and/or the carrying component are in a first sleeved position, the working component and the carrying component are in a working state;

When the connecting piece and the working component and/or the back-bearing component are in the second sleeved position, the working component and the back-bearing component are in a storage state.

The above-mentioned backpack power tool includes a working component and a backpack component. By setting a connecting piece, the working component is allowed to switch and match between the first connecting part and the second connecting part on the two side surfaces, thereby meeting the needs of users with various different usage habits. The working component is matched to different sides on both sides of the back surface, and the energy supply unit on the backpack component is connected to the electrical interface of the action component through a conductive cable externally arranged on the connecting piece to supply power to the working component. After the working component is energized, when the operator uses his left hand or right hand to operate the working component according to his own operating habits, the air inlet of the working component takes in air and the air outlet discharges air to complete the operation.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic structural diagram of a backpack power tool in a working state according to an embodiment;

FIG2 is a schematic cross-sectional view of the backpack power tool shown in FIG1 ;

FIG3 is a front plan view of the structure of the backpack power tool shown in FIG1 ;

FIG4 is a schematic diagram of the exploded structure of the backpack power tool shown in FIG1 with the connecting member located at a first connecting position;

FIG5 is a schematic diagram of the exploded structure of the backpack power tool shown in FIG1 with the connecting member located at a second connecting position;

FIG6 is a schematic diagram of the structure of the backpack power tool shown in FIG1 in a storage state;

FIG. 7 is an enlarged view of point A in FIG. 2 .

Reference numerals:
100. backpack power tool; 10. operating assembly; 11. air duct; 111. air outlet; 112. air inlet; 12.
The third connection part; 13. The operating part; 131. The gripping handle; 133. The matching ring; 30. The carrying assembly; 31. The equipment body; 311. The first connection part; 313. The second connection part; 314. The carrying side; 315. The side; 33. The shoulder strap; 50. The connecting piece; 51. The second shaft tube; 53. The first shaft tube; 54. The first unlocking part; 55. The second unlocking part; 56. The snap-fitting part; 57. The reset part; 58. The slot; 70. The conductive cable; L1. The longitudinal direction of the connecting piece; L2. The width direction of the operating assembly; L3. The longitudinal direction of the operating assembly; L4. The height direction of the carrying assembly.

Detailed ways

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

As described in the background technology, a backpack work tool is an operating tool that is carried by the operator on his back to perform functional operations when in use. It is widely used in heavy-load life, such as a backpack hair dryer for blowing and cleaning. It adopts an integrated design. The backpack work tool can enable users to work while walking, which is convenient and is therefore widely welcomed by people.

The general backpack work tools on the market mainly include two parts, one is the backpack carried on the user's back, which can be used as a power source or storage device, and the other is the working part, which the user holds and aims at the part to be worked on. In order to comply with ergonomics, in general, when operating a backpack work tool, the user puts the backpack on the back, and the working part is located on the right hand side, so as to meet the usage habits of most people and achieve the effect of convenient operation and saving time and effort.

However, the applicant found that this backpack work tool cannot be used by people with different operating habits. For example, if the working part is placed on the right-hand side of the backpack, some left-handed people will be unable to operate it. If the working part is placed on the left-hand side of the backpack, some right-handed operators will be unable to work.

In order to solve the above problems, referring to FIG. 1 and FIG. 3 , an embodiment of the present application provides a backpack power tool 100 , including: a working component 10 , a backpack component 30 and a connecting member 50 .

The operating component 10 includes a wind tube 11, and an air inlet 112 for air intake and an air outlet 111 for air discharge are respectively provided at both ends of the wind tube 11. When the operating component 10 is operating, external wind enters the wind tube 11 from the air inlet 112 and flows out of the wind tube 11 from the air outlet 111 to perform a blowing operation.

1 , the carrying assembly 30 is used for being carried on the back of a user, and the carrying assembly 30 includes a carrying surface 314 that contacts the back of the user, and a first connecting portion 311 and a second connecting portion 313 that are respectively provided on the left and right sides of the carrying surface 314. The connecting member 50 is configured to allow the working assembly 10 to be switched between the first connecting portion 311 and the second connecting portion 313, and the connecting member 50 includes two opposite ends, one end of which can be detachably connected to the carrying assembly 30, and the other end of which can be connected to the working assembly 10.

It should be noted that the first connection portion 311 and the second connection portion 313 are respectively arranged on the left and right sides of the back body 314. It should be understood that: the first connection portion 311 can be arranged on the left side of the back body 314, and the second connection portion 313 is arranged on the right side of the back body 314, or the first connection portion 311 is arranged on the right side of the back body 314, and the second connection portion 313 is arranged on the left side of the back body 314.

It can be understood that the first connection part 311 and the second connection part 313 are used to provide connection positions on the left and right sides of the backpack component for connecting the working component 10, so that the working component can be selectively connected to the left or right side of the backpack component to match the different operating habits of the operator, especially the left and right hand usage habits. Among them, the first connection part 311 and the second connection part 313 are respectively arranged on the left and right sides of the backpack part 314, which should be understood as the first connection part 311 and the second connection part 313 are roughly located on the left and right sides of the backpack component, which is suitable for the user to operate the working component 10 on the left and right sides respectively when carrying the backpack component 30. Specifically, the first connection portion 311 and the second connection portion 313 can be arranged on the left and right side surfaces located on the left and right sides of the back body 314 and adjacent to the back body 314, or can be arranged on the back body 314 and respectively located on the left and right sides of the back body 314, or can be arranged on other surfaces of the back component 30 or suspended relative to the back component 30, but are roughly located on the left and right sides thereof relative to the longitudinal midline position of the back body 314, or can be other settings, which are not elaborated here.

Referring to FIG. 1 , in one embodiment, the back-carrying assembly 30 is used for being carried on the back of a user, and includes a back-carrying negative surface 314, two side surfaces 315 adjacent to the back-carrying negative surface 314, a top surface and a bottom surface arranged opposite to each other, and a rear end surface opposite to the back-carrying negative surface 314. It should be noted that the back-carrying negative surface 314 is the surface carried by the user, and when the user carries the back-carrying assembly 30 on the body, the two side surfaces 315 adjacent to the back-carrying negative surface 314 are respectively located on the left and right sides of the user's hands, the top surface is located at the position of the back-carrying assembly 30 closest to the head of the person, the bottom surface is located at the position of the back-carrying assembly 30 closest to the feet of the person, and the rear end surface is located at the position of the back-carrying assembly 30 opposite to the person's back, and when the left and right hands are wrapped around backwards, the rear end surface can be touched.

Referring to FIG. 3 , in this embodiment, the backpack assembly 30 is provided with a first connection portion 311 and a second connection portion 313 on two side surfaces 315, respectively, and the connector 50 is configured to allow the working assembly 10 to switch between the first connection portion 311 and the second connection portion 313, so as to connect the working assembly 10 to different side surfaces 315, that is, to the left hand side or the right hand side of the user. Further, the connector 50 includes two opposite ends, one end of which can be detachably connected to the backpack assembly 30, and the other end of which can be connected to the working assembly 10. Specifically, the connector 50 includes a first connection end and a second connection end, the first connection end can be detachably connected to the first connection portion 311 and the second connection portion 313, and the second connection end can be connected to the working assembly 10; the working assembly 10 can be selectively connected to one of the first connection portion 311 and the second connection portion 313 through the connector 50. As an example, for the sake of convenience, it is taken that the first connection part 311 is arranged on the right hand side of the backpack component 30 and the second connection part 313 is arranged on the left hand side of the backpack component 30. When the working component 10 is connected to the first connection part 311, the connection member 50 is removed from the backpack component 30 and connected to the second connection part 313, so that the working component 10 can be switched from the right hand side of the user to the left hand side of the user; conversely, when the working component 10 is connected to the second connection part 313, the connection member 50 is removed from the backpack component 30 and connected to the first connection part 311, so that the working component 10 can be switched from the left hand side of the user to the right hand side of the user.

Furthermore, the backpack component 30 is provided with an energy supply unit for providing electrical energy to the working component 10 . The energy supply unit is electrically connected to the working component 10 via a conductive cable 70 externally disposed on the connecting member 50 to supply power to the working component 10 .

It is understandable that the working component 10 needs power and power supply when working. The power can be provided by setting a motor and other structures, so that the wind from the outside enters the wind tube 11 from the wind inlet 112 and flows out of the wind tube 11 from the wind outlet 111 to blow to the outside. The power supply is provided by the backpack component 30. Specifically, the backpack component 30 is provided with an energy supply unit for providing electric energy to the working component 10. The energy supply unit is electrically connected to the electrical interface of the working component 10 through a conductive cable externally disposed on the connecting member 50 to supply power to the working component 10.

It is understandable that the conductive cable 70 is externally disposed on the connector 50, which should be understood as: when the backpack power tool is turned on and working normally, the conductive cable 70 is at least partially exposed outside the connector and can be seen by the user. The electrical connection between the energy supply unit of the backpack assembly and the working assembly is not achieved by the connection of the connector. As an example, the conductive cable 70 and the connector 50 are independently disposed, and the conductive cable 70 cannot be embedded in the connector 50.

In one embodiment, the energy supply unit includes a battery unit, and the working component 10 includes a circuit board for controlling the working component 10 to perform a working task. The battery unit is electrically connected to the circuit board through a conductive cable 70 to power the working component 10.

It is understandable that the electrical interface of the operating component 10 should be understood as the power input end of the operating component, which is used to connect the conductive cable 70 to input power into the circuit board of the operating component 10. Specifically, it can be a plug-in interface that can be plugged and unplugged with one end of the conductive cable 70, or it can be an electrical contact or pin or wire for power input of the circuit board inside the operating component 10, etc., which will not be described one by one here.

It is understandable that the way in which the battery unit of the backpack component 30 and the circuit board of the working component are electrically connected through the conductive cable 70 can be a fixed connection or a detachable connection. Specifically, the conductive cable 70 can be fixedly connected to both the battery unit of the backpack component 30 and the circuit board of the working component 10, that is, it cannot be plugged in or out; the conductive cable 70 can be fixedly connected to one of the battery unit of the backpack component 30 and the circuit board of the working component 10, and the other can be detachably connected; the conductive cable 70 can also include two sections of cables, one of which is fixedly connected to the battery unit of the backpack component 30, and the other is fixedly connected to the circuit board of the working component 10, and the other ends of the two sections of cables are detachably connected through a plug interface; there can also be other connection methods, which are not described here one by one. Among them, in one embodiment, the detachable connection can be achieved by providing a socket on the backpack component 30 or the working component 10, providing a corresponding plug at the end of the conductive cable 70, and making the plug match the socket. When the operator operates the backpack power tool 100, the operator connects the working component 10 according to his own operating habits, and then connects the conductive cable to the electrical interface of the working component 10 to power the working component 10, so that the air inlet 112 takes in air and the air outlet 111 discharges air to complete the blowing operation.

In this way, the working component 10 can be switched between the first connecting portion 311 and the second connecting portion 313 through the connecting member 50, so that the working component 10 can be arbitrarily connected to the right hand side or the left hand side of the backpack component 30 according to the use requirements, that is, switching between the state of FIG. 4 and the state of FIG. 5, thereby realizing the switching connection of the working component 10 on the left and right sides of the backpack component 30. Regardless of whether the user uses the left hand or the right hand to operate, the position of the working component 10 can be adaptively adjusted at any time. For the sake of convenience, the following description is based on the first connecting portion 311 being defined as being located on the right hand side of the backpack component 30.

In one embodiment, the connecting member 50 is connected to the working component 10 at the lower end of the air inlet 112 of the working component 10. The lower end of the air inlet 112 of the working component 10 refers to the bottom of the working component 10 on the side of the hand of the person and away from the head of the person. The connecting member 50 is connected to the air inlet 112 of the working component 10. On the one hand, it bears the weight of the working component 10, and on the other hand, it is convenient for the air duct 11 to extend out to discharge air, so as to achieve a long-distance blowing operation.

Furthermore, the connecting member 50 is connected to the lower end of the air inlet portion 112 to prevent the hand from touching the air duct 11 from above the air duct 11. For other operations, for example, referring to FIG1 , the operating component 10 includes an operating portion 13, which is sleeved on the wind cylinder 11 and located between the air inlet portion 112 and the air outlet portion 111. The user can lift the wind cylinder 11 with one hand through the operating portion 13, thereby fixing the position of the wind cylinder 11 to avoid shaking of the wind cylinder 11 during operation.

Specifically, in other embodiments, the hair dryer 11 can not only blow air, but also be set as a spraying structure, which is not limited in the present application. Further, referring to Figure 1, the operating component 10 is a hair dryer, and the hair dryer includes an operating handle (i.e., a gripping handle) arranged above the hair dryer 11; the connecting member 50 is connected to the hair dryer below the air inlet 112 of the hair dryer. Specifically, the operating component 10 includes an operating portion 13, and the operating portion 13 includes a gripping handle 131 and a matching ring 133 sleeved on the outer periphery of the hair dryer 11. The gripping handle 131 is detachably matched with the hair dryer 11 through the matching ring 133, so that the operating portion 13 can be selectively assembled. When the user needs to use the operating portion 13, the position of the hair dryer 11 is fixed by holding the gripping handle 131.

In some embodiments, referring to FIG. 4 and FIG. 5, optionally, the carrying assembly 30 includes an equipment body 31 and a shoulder strap 33 connected to the equipment body 31, and a back face 314 is formed on the equipment body 31. When the user carries the shoulder strap 33 on his body, the back face 314 fits the back of the human body. The assembly body 31 can be a shell for carrying the energy supply unit, or it can be the energy supply unit body, which is carried on the back of the human body as the main load or carries the main load to power the working assembly 10.

The two side surfaces 315 of the carrying assembly 30 adjacent to the back side 314 may be located on the equipment body 31, the first connection portion 311 and the second connection portion 313 are located on the left and right sides of the equipment body 31 at the back side 314, and the working assembly 10 is connected to the equipment body 31 through the connecting member 50. The user can carry the equipment body 31 on the human body through the shoulder strap 33, thereby carrying the carrying assembly 30. After the carrying assembly 30 is carried on the user, the user's left and right hands can operate the working assembly 10 matched with the first connection portion 311 or the second connection portion 313 of the carrying assembly 30.

In one embodiment, referring to FIGS. 4 and 5 , the connecting member 50 is movably arranged relative to the working assembly 10, and can be selectively moved to a first connecting position and a second connecting position relative to the working assembly 10. The first connecting position is configured as follows: when the connecting member 50 is in the first connecting position, the working assembly 10 is suitable for connecting with the first connecting portion 311 through the connecting member 50; and the second connecting position is configured as follows: when the connecting member 50 is in the second connecting position, the working assembly 10 is suitable for connecting with the second connecting portion 313 through the connecting member 50.

It can be understood that, since the first connection part 311 and the second connection part 313 are respectively arranged on the left and right sides of the back assembly 30, the connecting member 50 can be selectively moved to the first connection position and the second connection position relative to the working assembly 10, so as to selectively connect the working assembly 10 to the left and right sides of the back assembly 30 respectively. As an example, take the first connection part 311 located on the right side of the back assembly 30 and the second connection part 313 located on the left side of the back assembly 30 as an example. The connecting member 50 moves to the first connection position relative to the working assembly 10, that is, the right side of the connecting member is connected to the working assembly 10, and the left side is used to connect the first connection part 311 of the back assembly 30. At this time, the working assembly 10 is suitable for connecting to the right side of the back assembly 30; the connecting member 50 moves to the second connection position relative to the working assembly 10, that is, the left side of the connecting member is connected to the working assembly 10, and the right side is used to connect the second connection part 313 of the back assembly 30. At this time, the working assembly 10 is suitable for connecting to the left side of the back assembly 30.

In one embodiment, referring to Figures 4 and 5, the connecting member 50 can be selectively located at a first connection position and a second connection position relative to the working assembly 10. When the connecting member 50 is at the first connection position, the connecting member 50 is connected to the first connection portion 311, and when the connecting member 50 is at the second connection position, the connecting member 50 is connected to the second connection portion 313.

Specifically, when the working component 10 is assembled on the right hand side of the user, as shown in Figure 4, the connecting member 50 is in the first connection position relative to the working component 10, one end of the connecting member 50 is connected to the working component 10, and the other end of the connecting member 50 is connected to the first connecting portion 311, thereby assembling the working component 10 on the right hand side of the user.

Specifically, when the working component 10 is assembled on the left hand side of the user, as shown in Figure 5, the connecting member 50 is in the second connection position relative to the working component 10, one end of the connecting member 50 is connected to the working component 10, and the other end of the connecting member 50 is connected to the second connecting portion 313, thereby assembling the working component 10 on the left hand side of the user.

In one embodiment, referring to Figures 4 and 5, the working component 10 includes a third connecting portion 12 for connecting a connecting member 50, and the connecting member 50 is detachably connected to the third connecting portion 12; the third connecting portion 12 includes a first installation position and a second installation position, the connecting member 50 is connected to the third connecting portion 12 at the first installation position, so that the connecting member 50 is located at the first connection position relative to the working component 10; the connecting member 50 is connected to the third connecting portion 12 at the second installation position, so that the connecting member 50 is located at the second connection position relative to the working component 10.

It can be understood that the first installation position and the second installation position are different connection positions of the connector 50 relative to the third connection part 12 of the working component 10. As an example, the third connection part 12 forms a hollow cylinder and includes two opposing left and right installation ports. When the connector 50 is connected to the third connection part 12 from the installation port on the left, the right end of the connector 50 is connected to the third connection part 12, and the left end of the connector 50 is exposed and suitable for connecting to the first connection part 311 on the right side of the backpack component 30, that is, the state in which the connector 50 is connected to the third connection part 12 from the installation port on the left corresponds to the first installation position; when the connector 50 is connected to the third connection part 12 from the installation port on the right, the left end of the connector 50 is connected to the third connection part 12, and the right end of the connector is exposed and suitable for connecting to the second connection part 313 on the left side of the backpack component 30, that is, the state in which the connector 50 is connected to the third connection part 12 from the installation port on the left corresponds to the second installation position.

In one embodiment, referring to FIGS. 4 and 5 , the operation assembly 10 includes a third connection portion 12, and a connection member 50 is detachably connected to the third connection portion 12. The connection member 50 is located at a first connection position and a second connection position by different connection positions relative to the third connection portion 12. When the connection member 50 is at the first connection position, the connection member 50 is connected to the first connection portion 311, and when the connection member 50 is at the second connection position, the connection member 50 is connected to the second connection portion 313.

Specifically, when the working component 10 is assembled on the right hand side of the user, as shown in Figure 4, the connecting member 50 is in the first connection position relative to the third connecting portion 12 of the working component 10, one end of the connecting member 50 is detachably connected to the third connecting portion 12 of the working component 10, and the other end of the connecting member 50 is connected to the first connecting portion 311, thereby assembling the working component 10 on the right hand side of the user.

Specifically, when the working component 10 is assembled on the left hand side of the user, as shown in Figure 5, the connecting member 50 is in the second connection position relative to the third connecting portion 12 of the working component 10, one end of the connecting member 50 is detachably connected to the third connecting portion 12 of the working component 10, and the other end of the connecting member 50 is connected to the second connecting portion 313, thereby assembling the working component 10 on the left hand side of the user.

In one embodiment, a first engaging structure is provided at one end of the connecting member 50, a second engaging structure is provided at the other end of the connecting member 50, a third engaging structure is provided at the first connecting portion 311, a fourth engaging structure is provided at the second connecting portion 313, and a fifth engaging structure is provided at the third connecting portion 12. The first engaging structure can be locked and matched with the third engaging structure, the fourth engaging structure, and the fifth engaging structure respectively; the second engaging structure can be locked and matched with the third engaging structure, the fourth engaging structure, and the fifth engaging structure respectively.

Based on this, both ends of the connector 50 can be compatible with the first connector 311 , the second connector 313 , and the third connector 12 . During assembly, the user does not need to identify the two ends of the connector 50 , making assembly simpler and more convenient.

As an example, the locking cooperation between the engagement structure of the connector 50 and the engagement structures of the first connection part 311, the second connection part 313, and the third connection part 12 includes mutual cooperation in shape and/or mutual interlocking connection. Specifically, in terms of shape, one of the two engaging structures that cooperate with each other forms a concave structure, and the other forms a convex structure that matches the concave structure. The engagement of the concave structure with the convex structure can achieve a stable connection between the connector 50 and the first connection part 311, the second connection part 313, and the third connection part 12. The interlocking between the two engaging structures that cooperate with each other can be achieved by a locking assembly. For example, a snap-in portion is provided on one of them, and a snap-in groove is provided on the other. The interlocking connection between the two engaging structures is realized so that the two engaging structures cannot be separated relatively, that is, the connecting member 50 and the first connecting portion 311 , the second connecting portion 313 , and the third connecting portion 12 cannot be separated relatively.

In one embodiment, the connector 50 may be provided with a first shaft tube 53 and a second shaft tube 51 at opposite ends thereof, one of the first shaft tube 53 and the second shaft tube 51 realizing a detachable connection with the backpack assembly 30, and the other realizing a detachable connection with the third connection portion 12 of the working assembly 10. For example, when the connector 50 is in the first connection position relative to the third connection portion 12 of the working assembly 10, the first shaft tube 53 or the second shaft tube 51 of the connector 50 is connected to the first connection portion 311, and when the connector 50 is in the second connection position relative to the third connection portion 12 of the working assembly 10, the second shaft tube 51 or the first shaft tube 53 of the connector 50 is connected to the second connection portion 313, and the present application does not limit this.

Furthermore, in order to ensure that the first shaft tube 53 and the second shaft tube 51 of the connecting member 50 can be switched and connected with the first connecting part 311/the second connecting part 313 and the third connecting part 12 at will, it is necessary to set the length and size of the first shaft tube 53 and the second shaft tube 51 to be the same. At this time, the first shaft tube 53 and the second shaft tube 51 are universal and can be switched at will on the first connecting part 311/the second connecting part 313 and the third connecting part 12.

In other embodiments, the lengths and sizes of the first shaft tube 53 and the second shaft tube 51 may also be different, and in this case, the first shaft tube 53 and the second shaft tube 51 are designed to be specifically connected. For example, when the connector 50 is in the first connection position and the second connection position relative to the third connection portion 12 of the working component 10, the first shaft tube 53 can only be plugged into the first connection portion 311 or the second connection portion 313 of the backpack component 30, and the second shaft tube 51 can only be plugged into the third connection portion 12 of the working component 10.

Since the backpack component 30 is generally heavier than the working component 10, the length of the first shaft tube 53 should be greater than the length of the second shaft tube 51, the diameter of the first shaft tube 53 should be greater than the diameter of the second shaft tube 51, and the load-bearing capacity of the first shaft tube 53 should be greater than the second shaft tube 51, so as to better transfer the gravity of the working component 10 to the backpack component 30, making it easier for the operator to operate the working component 10.

In one embodiment, referring to Figure 2, a locking assembly is provided between the first connection part 311 and/or the second connection part 313 and the connecting member 50, and the locking assembly includes a locking part and an unlocking part. The connecting member 50 includes a relatively locked locking state and a relatively detachable unlocking state relative to the first connection part 311 and/or the second connection part 313; the locking part is used to put the connecting member 50 in a locked state relative to the first connection part 311 and/or the second connection part 313, and the unlocking part is used to put the connecting member 50 in an unlocked state relative to the first connection part 311 and/or the second connection part 313. Further, referring to FIG. 7 , the locking portion includes a protruding clamping portion 56 and a clamping slot 58 matched with the clamping portion 56. The clamping portion 56 is engaged with the clamping slot 58, so that the connecting member 50 is in a locked state relative to the first connecting portion 311 and/or the second connecting portion 313; the unlocking portion (i.e., the first unlocking portion 54 or the second unlocking portion 55 described later) is connected to the clamping portion 56 and can drive the clamping portion 56 to move, and the unlocking portion drives the clamping portion 56 to move out of the clamping slot 58, so that the connecting member 50 is in an unlocked state relative to the first connecting portion 311 and/or the second connecting portion 313. Among them, the clamping portion 56 and the unlocking portion are arranged on one of the connecting member 50 and the first connecting portion 311 and/or the second connecting portion 313, and the clamping slot 58 is arranged on the other. Further, a reset member 57 is also arranged between the unlocking portion and the connecting member 50, so that when the user releases the unlocking portion, the unlocking portion can automatically reset, thereby driving the clamping portion 56 to automatically reset. Specifically, the reset member 57 can be a reset spring.

As an example, a locking assembly is provided between the first connection part 311 and the connecting member 50, and between the second connection part 313 and the connecting member 50. Taking the locking assembly between the first connection part 311 and the connecting member 50 as an example, the locking part includes a protruding clamping part 56 and a clamping groove 58 matched with the clamping part 56. The clamping part 56 is engaged with the clamping groove 58, so that the connecting member 50 is in a locked state relative to the first connection part 311; the unlocking part (i.e., the second unlocking part 55 described later) is connected to the clamping part 56 and can drive the clamping part 56 to move. The unlocking part drives the clamping part 56 to move out of the clamping groove 58, so that the connecting member 50 is in an unlocked state relative to the first connection part 311. A reset member is also provided between the unlocking part and the connecting member 50. 57. The clamping portion 56 and the unlocking portion are provided on the connecting member 50, and the clamping slot 58 is provided on the first connecting portion. The structure of the locking assembly between the second connecting portion 313 and the connecting member 50 is the same as the structure of the locking assembly between the first connecting portion 311 and the connecting member 50, and will not be repeated here.

In one embodiment, referring to Figure 2, a locking assembly is provided between the first connection part 311 and/or the second connection part 313 and/or the third connection part 12 and the connecting member 50, and the locking assembly is used to realize the locking between the first engaging structure or the second engaging structure and the third engaging structure or the fourth engaging structure or the fifth engaging structure, and the locking assembly includes a locking part and an unlocking part, and the connecting member 50 includes a relatively locked locking state and a relatively detachable unlocking state relative to the first connection part 311 and/or the second connection part 313 and/or the third connection part 12; the locking part is used to make the connecting member 50 in a locked state relative to the first connection part 311 and/or the second connection part 313 and/or the third connection part 12, and the unlocking part is used to make the connecting member 50 in an unlocked state relative to the first connection part 311 and/or the second connection part 313 and/or the third connection part 12.

Further, referring to FIG. 7 , the locking portion includes a protruding clamping portion 56 and a clamping slot 58 matched with the clamping portion 56. The clamping portion 56 is engaged with the clamping slot 58, so that the connecting member 50 is in a locked state relative to the first connecting portion 311 and/or the second connecting portion 313 and/or the third connecting portion 12; the unlocking portion is connected to the clamping portion 56 and can drive the clamping portion 56 to move. The unlocking portion drives the clamping portion 56 to move out of the clamping slot 58, so that the connecting member 50 is in an unlocked state relative to the first connecting portion 311 and/or the second connecting portion 313 and/or the third connecting portion 12. The clamping portion 56 and the unlocking portion are arranged on one of the connecting member 50 and the first connecting portion 311 and/or the second connecting portion 313 and/or the third connecting portion 12, and the clamping slot 58 is arranged on the other. Further, a reset member 57 is also arranged between the unlocking portion and the connecting member 50, so that when the user releases the unlocking portion, the unlocking portion can be automatically reset, thereby driving the clamping portion 56 to automatically reset. Specifically, the return member 57 may be a return spring.

As an example, a locking assembly is provided between the first connection part 311 and the connection member 50, between the second connection part 313 and the connection member 50, and between the third connection part 12 and the connection member 50. Taking the locking assembly between the first connection part 311 and the connection member 50 as an example, the locking part includes a protruding clamping part 56 and a clamping groove 58 matched with the clamping part 56, and the clamping part 56 is engaged with the clamping groove 58, so that the connection member 50 is in a locked state relative to the first connection part 311; the unlocking part (i.e., the second unlocking part 55 described later) is connected to the clamping part 56 and can drive the clamping part 56 to move, and the unlocking part drives the clamping part 56 to move out of the clamping groove 58, so that the connection member 50 is in an unlocked state relative to the first connection part 311. A reset member 57 is also provided between the unlocking part and the connection member 50. Among them, the clamping part 56 and the unlocking part are provided on the connection member 50, and the clamping groove 58 is provided on the first connection part. The structure of the locking assembly between the second connection part 313 and the connection member 50 and the structure of the locking assembly between the third connection part and the connection member 50 are the same as the structure of the locking assembly between the first connection part 311 and the connection member 50, and are not repeated here.

In one embodiment, referring to FIG. 4 and FIG. 5 , the backpack power tool 100 is provided with a first unlocking portion 54 for detaching the connecting member 50 from the backpack assembly 30 .

Specifically, the first unlocking portion 54 is provided so that the user can operate the connecting member 50 to drive the working assembly 10 to be connected to the first connecting portion 311 or the second connecting portion 313, and lock it through the first unlocking portion 54. The connecting member 50 and the working assembly 10 can also be removed from the backpack assembly 30 by unlocking the first unlocking portion 54. At this time, the backpack assembly 30 is stored separately, and the connecting member 50 and the working assembly 10 are stored together.

In one embodiment, the backpack power tool 100 is provided with a first unlocking portion 54 for quickly disassembling the connecting member 50 from the backpack component 30, and a second unlocking portion 55 for quickly disassembling the connecting member 50 from the working component 10. At this time, through the user's single-handed operation, the first unlocking portion 54 can quickly fix the connecting member 50 on the backpack component 30, and can also quickly unlock the connecting member 50 from the backpack component 30, and the second unlocking portion 55 can quickly fix the working component 10 on the connecting member 50, and can also quickly unlock the working component 10 from the connecting member 50. The order in which the connecting member 50 is connected to the backpack component 30/working component 10 first is not limited to the embodiment. The connection order.

In one embodiment, the first unlocking portion 54 can be set on the connecting member 50, and the second unlocking portion 55 can also be set on the connecting member 50, that is, in order to lock and unlock the backpack component 30 and the working component 10, the user only needs to operate the connecting member 50.

In other embodiments, the first unlocking portion 54 may also be disposed on the backpack assembly 30, and the second unlocking portion 55 may also be disposed on the working assembly 10. The present application is not limited thereto.

In one embodiment, the first unlocking portion 54 can be snapped onto the backpack assembly 30 to fix the connecting member 50 and the backpack assembly 30 , and the second unlocking portion 55 can be snapped onto the working assembly 10 to fix the connecting member 50 and the working assembly 10 .

Specifically, the first unlocking portion 54 can be an elastic member, which is arranged on the connecting member 50. When the connecting member 50 and the backpack component 30 are not connected in place, the elastic member is pressed to generate an elastic force. When the connecting member 50 and the backpack component 30 are connected in place, the elastic member pops out and is connected to the backpack component 30 to fix the connecting member 50 and the backpack component 30. When it is necessary to unlock the connecting member 50 and the backpack component 30, the user needs to apply external force with one hand to cancel the fixing clamping force of the first unlocking portion 54 first, so that the connecting member 50 and the backpack component 30 can be separated.

It can be understood that the second unlocking portion 55 can also be an elastic member, and its setting method and action method are the same as those of the first unlocking portion 54, which will not be further elaborated here.

In one embodiment, the connection between the connector 50 and the first connector 311 and the second connector 313 is an inner-outer connection. The first connector 311 and the second connector 313 are both hollow cavity structures, and one end of the connector 50 can be embedded in the hollow cavity to connect with the first connector 311 and the second connector 313. Further, the end of the connector 50 forms a column that matches the shape of the cavity. As an example, the first connector 311 and the second connector 313 form a hollow cavity that is basically cylindrical, and the end of the connector 50 forms a cylinder that matches the shape of the cavity.

In one embodiment, one end of the connecting member 50 can be sleeved with the first connecting portion 311 or the second connecting portion 313, and the other end of the connecting member 50 can be sleeved with the third connecting portion 12. For example, the first connecting portion 311, the second connecting portion 313, and the third connecting portion 12 provided on the working assembly 10 for connecting with the connecting member 50 are all cavity structures, and the two ends of the connecting member 50 are respectively nested in the corresponding cavity structures.

That is, one end of the connector 50 can be selectively embedded in the cavity of the first connecting portion 311 or the cavity of the second connecting portion 313 to achieve matching with the backpack assembly 30. The other end of the connector 50 is inserted into the cavity of the third connecting portion 12 of the working assembly 10 to achieve matching with the working assembly 10.

The first unlocking portion 54 can be provided to fix one end of the connector 50 to the cavity wall of the cavity structure of the first connecting portion 311 or the second connecting portion 313 or unlock the cavity wall, so that the one end of the connector 50 can be fixed in the cavity structure of the backpack assembly 30 or pulled out of the cavity structure. The second unlocking portion 55 can be provided to fix one end of the connector 50 to the cavity wall of the third connecting portion 12 or unlock the cavity wall, so that the one end of the connector 50 can be fixed in the cavity structure of the working assembly 10 or pulled out of the cavity structure.

The size and length of the cavity structure should be designed in accordance with the size and length of the first shaft tube 53 or the second shaft tube 51 of the connecting member 50 to be matched therewith, so as to achieve adaptive assembly of the two.

In one embodiment, the connecting member 50 includes a longitudinal direction L1, which is the axial direction of the connecting member 50, and the working component 10 includes a width direction L2. The longitudinal direction L1 of the connecting member connected to the working component 10 extends along the width direction L2 of the working component, that is, the width direction L2 of the air inlet part 112 is arranged parallel to the axial direction of the connecting member 50, so as to realize the compact structure of the backpack power tool 100.

Furthermore, by designing the cavity structure of the first connection portion 311, the second connection portion 313, and the third connection portion 12, the overall size of the backpack power tool 100 in the longitudinal direction L1 of the connection member can be shortened, thereby making the backpack power tool 100 compact. It can also be set to other structures, and is not limited to the design of the cavity structure of the above embodiment.

In other embodiments, the cavity structure may also be provided on the connector 50 , and matching protrusion structures may be provided on the first connector 311 , the second connector 313 , and the third connector 12 to achieve socket connection between the connector 50 and the first connector 311 , the second connector 313 , and the third connector 12 .

In one embodiment, the connecting member 50 is rotatable relative to the working assembly 10 and can be rotated to a first connection position and a second connection position. As an example, the connecting member 50 is rotatable relative to the working assembly 10 around a fixed axis, for example, the connecting member 50 is hinged to the working assembly 10 through a hinge assembly, and the rotation direction of the connecting member is configured to enable the connecting member 50 to rotate to a first connection position suitable for connecting the working assembly 10 with the first connection portion 311 of the backpack assembly 30, and to rotate to a second connection position suitable for connecting the working assembly 10 with the second connection portion 313 of the backpack assembly 30.

In one embodiment, the backpack power tool includes a connecting member rotating shaft, and the connecting member 50 can rotate around the connecting member rotating shaft relative to the working component 10 to be located at a first connection position and a second connection position; when the connecting member 50 is in the first connection position, the connecting member 50 is connected to the first connection portion 311, and when the connecting member 50 is in the second connection position, the connecting member 50 is connected to the second connection portion 313. Specifically explained, when the connecting member 50 rotates around the connecting member rotating shaft relative to the working component 10 to the first connection position, the connecting member 50 is connected to the first connection portion 311, and when the connecting member 50 rotates around the connecting member rotating shaft relative to the working component 10 to the second connection position, the connecting member 50 is connected to the second connection portion 313.

Specifically, the connecting member rotation axis is arranged on the working component; the working component 10 includes a longitudinal direction L3, a width direction L2 perpendicular to the longitudinal direction L3, and a height direction perpendicular to a reference plane formed by the longitudinal direction L3 and the width direction L2, and the connecting member rotation axis is parallel to the height direction of the working component 10; that is, the surface of the connecting member 50 rotating around the connecting member rotation axis is parallel to the reference plane formed by the longitudinal direction L3 and the width direction L2.

When the connecting member 50 rotates from the first connecting position to the second connecting position or from the second connecting position to the first connecting position relative to the connecting member rotating axis of the working component 10, the connecting member 50 can be pushed to rotate circumferentially about 180° around the connecting member rotating axis, so that the relative position between the working component 10 and the back component 30 changes, thereby realizing that the working component 10 is located on the left and right sides of the back component 30.

In other embodiments, the third connection portion of the operating component may be rotatably connected to the operating component, and the connecting member may be connected to the third connection portion.

In other embodiments, the rotation direction of the connecting member 50 relative to the working assembly 10 is not limited to the design of the rotation direction of the above embodiment.

In one embodiment, the backpack power tool includes a storage state, in which the working assembly 10 is connected to the backpack assembly 30 through the connecting member 50, and the extension direction of the air cylinder 11 of the working assembly 10 is substantially parallel to the longitudinal direction of the back face 314 of the backpack assembly 30. The connecting member 50 further includes a third connection position relative to the working assembly 10 or the back face 30, and the third connection position is configured as follows: when the connecting member 50 is in the third connection position, the working assembly 10 is suitable for being connected to the first connection part 311 or the second connection part 313 through the connecting member 50, and the extension direction of the air cylinder 11 of the working assembly 10 (i.e., the L3 direction in Figures 4-6) is substantially parallel to the longitudinal direction of the back face 315 of the backpack assembly 30 (i.e., the L4 direction in Figures 4-6).

The backpack power tool also includes a working state, in which the working component 10 is connected to the first connecting portion 311 or the second connecting portion 313 of the backpack component 30 through the connecting member 50, and the extension direction of the air cylinder 11 of the working component 10 is substantially perpendicular to the longitudinal direction of the back surface 314 of the backpack component 30. It can be understood that, compared with the working state, in the storage state, the connecting member 50 is rotated circumferentially by a certain angle relative to the working component 10 or the backpack component 30 and then matched with each other, so that the backpack power tool is fixed in the storage state through the connecting member 50.

In one embodiment, a rotation limit assembly (not shown in the figure) is provided between the connecting member 50 and the working assembly 10 and/or the back assembly 30 to prevent relative rotation between the working assembly 10 and the back assembly 30 in the working state and/or the storage state.

Further, the rotation limiting assembly includes a spline shaft and a spline sleeve that cooperates with the spline shaft to form a rotation limiting; the spline shaft is provided on one of the connecting member 50 and the working assembly 10 and/or the back assembly 30, and the spline sleeve is provided on the other. As an example, the spline shaft is formed at the end of the connecting member 50, and the spline sleeves are formed on the third connecting portion 12 of the working assembly 10 and the first connecting portion 311 and the second connecting portion 313 of the back assembly 30.

As an example, take the case where the connector 50 is connected to the first connection portion 311 of the backpack assembly 30. In the working state, the connector 50 is connected to the first connection portion 311 and the third connection portion 12 through the spline shaft and the spline sleeve. At this time, if the backpack power tool needs to be adjusted to the storage state, the connector 50 needs to be disconnected from one of the first connection portion 311 or the third connection portion 12, and the working assembly 10 needs to be rotated approximately 90 degrees, so that the extension direction of the air cylinder 11 of the working assembly 10 is substantially parallel to the longitudinal direction of the back face 315 of the backpack assembly 30, and then the connection between the connector 50 and the first connection portion 311 or the third connection portion 12 is restored, and the backpack power tool can be adjusted to the storage state.

In one embodiment, the carrying assembly 30 includes a height direction L4 in a working state. When the user carries the carrying assembly 30 on his body, the height direction L4 is the height direction of the user. The working assembly 10 has a longitudinal direction L3. The longitudinal direction L3 of the working assembly is the extension direction of the air cylinder 11 and the air outlet direction of the air outlet 111.

Specifically, the working assembly 10 includes a working state and a storage state. In the working state, the longitudinal direction L3 of the working assembly is substantially perpendicular to the height direction L4 of the back assembly, which is ergonomic for operation. In the storage state, the longitudinal direction L3 of the working assembly is substantially parallel to the height direction L4 of the back assembly. In this state, the back-type power tool 100 can be stored by only providing storage space in the height direction L4 of the back assembly 30. In this way, the storage of the back-type power tool 100 is facilitated.

Here, "substantially perpendicular" is to be understood as a direction relative to a reference direction, wherein, in particular viewed in a plane, the direction and the reference direction enclose an angle of 90° and the angle has a maximum deviation of less than 20°. "Substantially parallel" is to be understood as an orientation of a direction relative to a reference direction, in particular in a plane, in particular, the direction has a maximum deviation of less than 20° relative to the reference direction.

Furthermore, the working component 10 is switched to the storage state by matching the connecting member 50 with the back component 30, that is, the connecting member 50 can be pulled out from the back component 30, and the working component 10 can be rotated until the longitudinal direction L3 of the working component is basically parallel to the height direction L4 of the back component, and then selectively plugged into the first connecting part 311 or the second connecting part 313, thereby forming the storage of the back-type power tool 100.

In other embodiments, the working component 10 can also achieve the storage state through relative rotation between the working component 10 and the connecting member 50, and the working component 10 can be controlled to rotate around the axial direction of the connecting member 50 until the longitudinal direction L3 of the working component is basically parallel to the height direction L4 of the carrying component. At this time, there is no need to disassemble the working component 10.

It should be noted that the setting form of the connecting member 50 that enables the working component 10 to switch between the first connecting part 311 and the second connecting part 313 of the back component 30 is not unique, and the structural form that enables the working component 10 and the back component 30 to form different connection angles is not unique. As long as the adjustment required by this application can be achieved, it is within the protection scope of this application.

In this way, the backpack power tool 100 can be stored and operated, avoiding the backpack power tool 100 having too large a storage space, thereby making the backpack power tool 100 easy to operate and also easy to store according to usage requirements, further improving the convenience of the backpack power tool 100.

Furthermore, when the working component 10 is in the working state or the storage state, the connection of the connecting member 50 prevents the working component 10 and the backpack component 30 from being connected in relative rotation, so as to ensure the stability of the working state or the storage state.

Specifically, the connection prevention of the connecting member 50 can be achieved through the fixing effect of the first unlocking portion 54 and the second unlocking portion 55 mentioned above, and can also be achieved through other effects.

The following connecting parts and working components are explained using the spline shaft and spline sleeve as an example.

In one embodiment, one of the connecting member 50 and the working component 10 and/or the back-bearing component 30 is provided with a spline shaft, and the other is provided with a spline sleeve. The connecting member 50 and the working component 10 and/or the back-bearing component 30 are prevented from being relatively rotated by the fitting socket of the spline shaft and the spline sleeve. The connection between the spline shaft and the spline sleeve includes a first socket position and a second socket position. When the connecting member 50 and the working component 10 and/or the back-bearing component 30 are in the first socket position, the working component 10 and the back-bearing component 30 are in a working state. When the connecting member 50 and the working component 10 and/or the back-bearing component 30 are in the second socket position, the working component 10 and the back-bearing component 30 are in a storage state.

The spline shaft and the spline sleeve can achieve anti-rotation fit. Through the anti-rotation fit of the two, the connecting member 50 and the working assembly 10 can be anti-rotation fit. At this time, the other end of the connecting member 50 is fixedly assembled on the back assembly 30, so as to achieve anti-rotation assembly of the working assembly 10 and the back assembly 30. When the spline shaft and the spline sleeve are in the first sleeve position, at this time, one end of the connecting member 50 is anti-rotationally installed in the third connecting portion 12, and the other end is matched on the back assembly 30, and the longitudinal direction L3 of the working assembly 10 is substantially perpendicular to the height direction L4 of the back assembly. When the spline shaft and the spline sleeve are in the second sleeve position, at this time, one end of the connecting member 50 is anti-rotationally installed in the third connecting portion 12, and the other end is matched on the back assembly 30, and the longitudinal direction L3 of the working assembly 10 is substantially parallel to the height direction L4 of the back assembly. In this way, the switching between the working state and the storage state is achieved through the different sleeve positions of the spline shaft and the spline sleeve.

In other embodiments, the connecting member 50 and the working assembly 10 and the backpack assembly 30 may all have anti-rotation cooperation, so as to realize the anti-rotation assembly of the working assembly 10 and the backpack assembly 30. In this way, the switching between the working state and the storage state is realized through the different socket positions of the spline shaft and the spline sleeve.

In other embodiments, the anti-rotation cooperation between the connecting member 50 and the working component 10 and/or the backpack component 30 does not limit the anti-rotation design structure of the above-mentioned embodiment.

Thus, the present application provides a backpack power tool 100 that can meet the usage needs of people with different operating habits and is easy to store and has a compact structure.

The technical features of the above embodiments may be arbitrarily combined. To make the description concise, 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.

The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

A backpack electric tool, comprising:

The operating assembly comprises an air cylinder, wherein two ends of the air cylinder are respectively provided with an air inlet for air intake and an air outlet for air discharge;

A carrying component, used for a user to carry it on his back;

and a connecting member, through which the working assembly is connected to the carrying assembly;

The backpack assembly comprises a back-bearing portion for contacting the back of a user and a first connecting portion and a second connecting portion respectively arranged on the left and right sides of the back-bearing portion;

The connecting member is configured to allow the working component to be switched between the first connecting portion and the second connecting portion, and the connecting member includes two opposite ends, one end of which can be detachably connected to the carrying component, and the other end of which can be connected to the working component;

The backpack component is provided with an energy supply unit for providing electrical energy to the working component. The energy supply unit is electrically connected to the working component via a conductive cable externally arranged on the connecting piece to supply power to the working component.
The backpack electric tool according to claim 1, characterized in that the connecting member is movably arranged relative to the working component and can be selectively moved to a first connecting position and a second connecting position relative to the working component;

The first connection position is configured such that when the connecting member is in the first connection position, the operating assembly is suitable for connecting to the first connection portion through the connecting member;

The second connection position is configured as follows: when the connecting member is in the second connection position, the operating component is suitable for being connected to the second connection portion through the connecting member.
The backpack power tool according to claim 2 is characterized in that the working component includes a third connecting part for connecting the connecting member, and the connecting member is detachably connected to the third connecting part; the third connecting part includes a first installation position and a second installation position, the connecting member is connected to the third connecting part at the first installation position, so that the connecting member is located at the first connecting position relative to the working component; the connecting member is connected to the third connecting part at the second installation position, so that the connecting member is located at the second connecting position relative to the working component.
The backpack power tool according to claim 3, characterized in that one end of the connecting member is provided with a first engaging structure, the other end of the connecting member is provided with a second engaging structure, the first connecting portion is provided with a third engaging structure, the second connecting portion is provided with a fourth engaging structure, and the third connecting portion is provided with a fifth engaging structure;

The first engaging structure can be locked and matched with the third engaging structure, the fourth engaging structure and the fifth engaging structure respectively; the second engaging structure can be locked and matched with the third engaging structure, the fourth engaging structure and the fifth engaging structure respectively.
The backpack power tool according to claim 1 is characterized in that a locking assembly is arranged between the first connecting part and/or the second connecting part and the connecting piece, the locking assembly includes a locking part and an unlocking part, and the connecting piece includes a relatively locked locking state and a relatively detachable unlocking state relative to the first connecting part and/or the second connecting part; the locking part is used to put the connecting piece in a locked state relative to the first connecting part and/or the second connecting part, and the unlocking part is used to put the connecting piece in an unlocked state relative to the first connecting part and/or the second connecting part.
The backpack electric tool according to claim 5 is characterized in that the locking portion comprises a protruding clamping portion and a clamping groove matched with the clamping portion, the clamping portion is engaged with the clamping groove, so that the connecting member is in the locked state relative to the first connecting portion and/or the second connecting portion; the unlocking portion is engaged with the clamping portion. The unlocking portion drives the clamping portion to move and disengage from the clamping slot, so that the connecting member is in the unlocking state relative to the first connecting portion and/or the second connecting portion;

The clamping portion and the unlocking portion are arranged on one of the connecting member and the first connecting portion and/or the second connecting portion, and the clamping slot is arranged on the other one.
The backpack power tool according to claim 2 is characterized in that the connecting member is rotatable relative to the working component and can be rotated to the first connecting position and the second connecting position.
The backpack power tool according to claim 1 is characterized in that the connection between the connecting piece and the first connecting part and the second connecting part is an inside-outside connection, the first connecting part and the second connecting part are both hollow cavity structures, and one end of the connecting piece can be embedded in the hollow cavity to connect with the first connecting part and the second connecting part.
The backpack power tool according to claim 2, characterized in that the backpack power tool includes a storage state, in which the working component is connected to the backpack component through the connecting member, and the extension direction of the wind tube of the working component is substantially parallel to the longitudinal direction of the back face of the backpack component;

The connecting member also includes a third connection position relative to the working component or the carrying component, and the third connection position is configured as follows: when the connecting member is in the third connection position, the working component is suitable for being connected to the first connection part or the second connection part through the connecting member, and the extension direction of the wind tube of the working component is basically parallel to the longitudinal direction of the back surface of the carrying component.
The backpack power tool according to claim 9, characterized in that the backpack power tool further comprises a working state, in which the working component is connected to the first connecting portion or the second connecting portion of the backpack component through the connecting member, and the extension direction of the wind tube of the working component is substantially perpendicular to the longitudinal direction of the back face of the backpack component;

A rotation limiting component is provided between the connecting member and the working component and/or the carrying component to prevent relative rotation between the working component and the carrying component in the working state and/or the storage state.
The backpack power tool according to claim 10, characterized in that the rotation limiting assembly comprises a spline shaft and a spline sleeve that cooperates with the spline shaft to form a rotation limit;

The spline shaft is arranged on one of the connecting member and the working component and/or the carrying component, and the spline sleeve is arranged on the other one.
The backpack power tool according to claim 1 is characterized in that the working component is a hair dryer, and the hair dryer includes an operating handle arranged above the wind tube; and the connecting member is connected to the hair dryer below the air inlet portion of the hair dryer.
The backpack power tool according to claim 1 is characterized in that the energy supply unit includes a battery unit, the working component includes a circuit board for controlling the working component to perform a working task, and the battery unit is electrically connected to the circuit board through the conductive cable to power the working component.
The backpack power tool according to claim 1 is characterized in that the backpack assembly also includes two side surfaces adjacent to the backpack front surface, and the first connecting portion and the second connecting portion are respectively arranged on the two side surfaces.
The backpack power tool according to claim 1 is characterized in that the energy supply unit is connected to the electrical interface of the working component through the conductive cable to supply power to the working component.