CN106181901B

CN106181901B - Backpack tool system

Info

Publication number: CN106181901B
Application number: CN201510621441.8A
Authority: CN
Inventors: 山冈敏成; 聂方杰; 郭建朋
Original assignee: Nanjing Deshuo Industrial Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2015-05-25
Filing date: 2015-09-25
Publication date: 2020-10-16
Anticipated expiration: 2035-09-25
Also published as: CN106194789A; CN106181903B; CN106192835A; CN106192834A; CN205184696U; CN106181904A; CN205776021U; CN106181904B; CN106181903A; CN106181901A; CN106181902A; CN106192834B; CN106194789B; CN106181902B; CN106192835B

Abstract

The invention discloses a backpack tool system, comprising: the bearing equipment is used for bearing the user; an electric tool for operation by a user; a battery pack for supplying electric power; wherein, bear and equip and include: an equipment combining part which can enable the battery pack to be detachably combined to the bearing equipment; the electric tool includes: the tool input interface is used for introducing a power supply for the electric tool; a tool coupling portion enabling the battery pack to be detachably coupled to the electric tool; the battery pack includes: the battery cell is used for storing electric energy; the battery output interface is used for outputting the electric energy of the battery pack; the battery pack can power both the power tool when coupled to the harness and the power tool when coupled to the power tool. The user can select to use the battery pack directly or through the backpack device according to needs, and the backpack tool system can improve the operation experience of the user when the backpack device is used for using the battery pack.

Description

Backpack tool system

Technical Field

The invention relates to a backpack tool system.

Background

The battery pack serving as a power source of the portable electric tool is a main link for restricting the development of the portable electric tool, the output voltage of the conventional battery pack is often low, and the battery pack and the conventional battery pack often cause the problem of insufficient power and poor endurance when driving a high-power electric tool.

However, when the output voltage of the battery pack is increased by increasing the number of the battery cells, the external size and the weight of the battery pack are correspondingly increased, so that the electric tool is difficult to adapt to the battery pack or cause trouble to the operation of a user, and particularly, the increase of the weight makes the user difficult to flexibly use the electric tool.

Disclosure of Invention

A backpack tool system comprising: the bearing equipment is used for bearing the user; an electric tool for operation by a user; a battery pack for supplying electric power; wherein, bear and equip and include: an equipment combining part which can enable the battery pack to be detachably combined to the bearing equipment; the electric tool includes: the tool input interface is used for introducing a power supply for the electric tool; a tool coupling portion enabling the battery pack to be detachably coupled to the electric tool; the battery pack includes: the battery cell is used for storing electric energy; the battery output interface is used for outputting the electric energy of the battery pack; the battery pack can power both the power tool when coupled to the harness and the power tool when coupled to the power tool.

Further, the piggyback equipment further comprises: the equipment input interface is used for being connected with the battery output interface; the battery pack can supply power to the electric tool through the connection formed by the battery output interface and the equipment input interface.

Further, both the equipment input interface and the tool input interface can be adapted to the battery output interface.

Further, the piggyback equipment comprises a plurality of equipment input interfaces.

Further, the piggyback equipment further comprises: the equipment output interface is used for being connected with the tool input interface;

when the battery pack is combined with the bearing equipment, the electric tool is powered through the connection formed by the equipment output interface and the tool input interface.

Further, both the battery output interface and the equipment output interface can be adapted to the tool input interface.

Further, the equipment input interface is electrically connected with the equipment output interface;

when the battery pack is combined to the bearing equipment, the battery output interface is electrically connected with the equipment input interface; the battery pack outputs electric energy through the equipment output interface.

Further, the piggyback equipment comprises more than two equipment output interfaces which can be used independently.

Further, the piggyback equipment comprises: the equipment body is provided with an equipment input interface; the adapter is provided with an equipment output interface; cables connected to the equipment body and the adapter, respectively; the equipment input interface and the equipment output interface are electrically connected through a cable.

Further, the piggyback tool system further comprises: a connecting device capable of transmitting an acting force between the electric tool and the bearing device; the connecting device is connected to the electric tool and the harness, respectively.

Further, the piggyback equipment further comprises: the equipment input interface is used for being connected with the battery output interface; the connecting device includes: the built-in cable is used for transmitting the electric energy accessed by the equipment input interface to the electric tool; the built-in cable is disposed in a wiring cavity formed by the connection device.

Further, the piggyback equipment further comprises: the equipment input interface is used for being connected with the battery output interface; an equipment output interface for outputting the electric energy input by the equipment input interface; the equipment input interface is electrically connected with the equipment output interface; the connection between the connecting device and the bearing equipment is detachable connection; the connecting device includes: the device input interface is used for being connected with the equipment output interface when the connecting device is combined with the bearing equipment; the built-in cable is used for transmitting the electric energy accessed by the input interface of the device to the electric tool; the device input interface is arranged at one end of the connecting device connected with the bearing equipment.

Further, the piggyback equipment further comprises: the equipment input interface is used for being connected with the battery output interface; the connection between the connecting device and the electric tool is detachable; the connecting device includes: a device output interface for connection with the tool input interface when the coupling device is coupled to the power tool; the built-in cable is used for transmitting the electric energy accessed by the equipment input interface to the device output interface; the device output interface is arranged at one end of the connecting device connected with the electric tool.

Further, the piggyback equipment further comprises: the equipment input interface is used for being connected with the battery output interface; an equipment output interface for outputting the electric energy input by the equipment input interface; the equipment input interface is electrically connected with the equipment output interface; the connection between the connecting device and the bearing equipment is detachable connection; the connection between the connecting device and the electric tool is detachable; the connecting device includes: the device input interface is used for being connected with the equipment output interface when the connecting device is combined with the bearing equipment; a device output interface for connection with the tool input interface when the coupling device is coupled to the power tool; a built-in cable for connecting the device input interface and the device output interface; the device input interface and the device output interface are respectively arranged at two opposite ends of the connecting device.

Further, the sum of the weights of the battery packs which can be combined by the backpack equipment is more than 1 Kg.

The invention has the advantages that: the user can select to use the battery pack directly or through the backpack device according to needs, and the backpack tool system can improve the operation experience of the user when the backpack device is used for using the battery pack.

Drawings

FIG. 1 is a schematic structural view of a backpack tool system;

FIG. 2 is an internal schematic view of a portion of the construction of the piggyback tool system of FIG. 1;

FIG. 3 is a schematic view of the piggyback tool system of FIG. 1 from another perspective;

FIG. 4 is an exploded view of the blower device and battery pack of the backpack tool system of FIG. 1;

FIG. 5 is a schematic view of the integrated harness and battery pack of the backpack tool system of FIG. 1;

FIG. 6 is a schematic diagram of the battery pack of the backpack tool system of FIG. 1;

FIG. 7 is a partial schematic view of a fan assembly in the backpack tool system of FIG. 1;

FIG. 8 is a schematic diagram of a backpack tool system employing an adapter solution;

FIG. 9 is a schematic diagram of a backpack tool system capable of powering two tool devices;

FIG. 10 is a schematic view of a backpack tool system having an attachment device;

FIG. 11 is a schematic view of a backpack tool system having both a connection device and an adapter;

FIG. 12 is a schematic view of the backpack instrument and battery pack of the backpack tool system of FIG. 11 providing power to both tool devices;

FIG. 13 is a schematic structural view of another piggyback tool system;

FIG. 14 is an exploded view of the major components of the backpack tool system shown in FIG. 13;

FIG. 15 is a schematic view of the fan device of the harness system of FIG. 13;

FIG. 16 is a perspective view of the internal structure of the fan assembly shown in FIG. 15;

FIG. 17 is a schematic plan view of the internal structure of the blower device shown in FIG. 15;

FIG. 18 is a schematic view of the operating handle and air duct of FIG. 15 in a cross-section perpendicular to the pivot axis;

FIG. 19 is a schematic structural view of a connection between the operating handle and the air duct in FIG. 15;

fig. 20 is a schematic perspective view of the air duct in fig. 15 at the position where the air duct forms the accommodating chamber;

fig. 21 is a schematic plan view of the air duct in fig. 15 where the air duct forms a receiving chamber;

fig. 22 is a schematic perspective view of an inner part structure of the duct in fig. 15;

fig. 23 is a schematic plan view of an inner part structure of the duct in fig. 15;

FIG. 24 is a schematic structural view of the mounting body of the piggyback tool system of FIG. 13;

FIG. 25 is a schematic diagram of the battery pack of the backpack tool system shown in FIG. 13;

FIG. 26 is a schematic view of the structure of the ejector in the kit body shown in FIG. 24;

FIG. 27 is a schematic view of a portion of the structure of the fitting body and the connecting means for coupling in FIG. 24;

FIG. 28 is a schematic view of the attachment device of the backpack tool system shown in FIG. 13;

FIG. 29 is a schematic view of the internal structure of the connecting section and the second connecting arm of FIG. 28;

FIG. 30 is a cross-sectional view of the attachment block and second attachment arm of FIG. 28;

FIG. 31 is a schematic view of another backpack tool system having a pruning device;

FIG. 32 is an exploded schematic view of the major components of the backpack tool system shown in FIG. 31;

FIG. 33 is a schematic view of a backpack tool system with a chain saw as the tool device;

fig. 34 is a schematic view of a backpack tool system having a power drill as a tool device.

Detailed Description

The invention is described in detail below with reference to the figures and the embodiments.

1-3, a piggyback tool system 100 comprising: a backpack device 10, a blower device 20, and a battery pack 30. Wherein, the backpack device 10 is used for being carried by a user so that the user can carry the battery pack 30.

The harness 10 mainly comprises: an equipment body 11 and a harness 12; the equipment body 11 may be used to connect or accommodate a power supply device, and the harness 12 is used to wrap around the user's body so that the user can carry the equipment body 11.

Specifically, as shown in fig. 1, the equipment main body 11 is provided with an equipment coupling portion 13, and the equipment coupling portion 13 enables the battery pack 30 to be coupled to the shoulder equipment 10, so that the battery pack 30 and the shoulder equipment 10 are integrated. As shown in fig. 2, the fan apparatus 20 includes: a fan housing 21, a motor 22 and a fan 23. Wherein the fan housing 21 is formed with an air duct 211, the motor 22 is used for driving the fan 23 to rotate, and the fan 23 is used as a functional element of the fan device 20 to enable the fan device 20 to have the function of generating air flow. An operating handle 26 is connected to the outside of the fan case 21, and the operating handle 26 is used for a user to operate the fan device 20.

More specifically, the motor 22 and the fan 23 are both disposed in the air passage 211 formed by the fan housing 21. Preferably, the fan 23 is an axial fan, and the air passage 211 is formed to extend substantially in the direction of the rotational axis S1 of the fan 23.

As shown in fig. 2, the battery pack 30 includes a battery case 31, and the battery case 31 is formed with a battery pack coupling portion 311 that can be engaged with the equipment coupling portion 13. The battery pack 30 is internally provided with a cell (not shown) for storing electric energy and a connection terminal (not shown) for outputting electric energy; in order to enable external connection to the connection terminals of the battery pack 30, the battery case 31 may be formed with terminal interfaces 311a at the pack coupling portion 311, and terminal interfaces 311b at other positions, each of which may connect the connection terminals of the battery pack 30 with the outside.

As shown in fig. 1 to 3, the equipment main body 11 is provided with an equipment input interface 111, and the equipment input interface 111 may be formed by the equipment coupling portion 13 or may be formed at another position of the equipment main body 11.

The equipment input interface 111 is provided with a connection terminal 111a that can be inserted into the battery pack 30, and the connection terminal 111a can be connected to a connection terminal of the battery pack 30 to achieve electrical connection. The harness 10 is further provided with a harness output interface 112, the harness output interface 112 being used for outputting electrical energy.

The equipment input interface 111 is used for inputting electric energy into the backpack equipment 10, and the equipment output interface 112 is used for outputting electric energy. Only a cable for connecting the connection terminal 111a of the device input interface 111 and the connection terminal of the device output interface 112 may be provided inside the device body 11, and in this case, the device body 11 corresponds to a relay adapter of the battery pack 30; of course, a circuit board and corresponding electronic components may be built in the device body 11 to form a circuit with certain functions, and at this time, the device body 11 is equivalent to a power supply device using the battery pack 30 as an initial source of electric energy; in any case, the equipment body 11 can continuously supply power by replacing the battery pack 30 with a sufficient amount of power.

As an extension scheme, the equipment body 11 may be internally provided with a battery cell and a charging interface for accessing an alternating current, when the charging interface accesses the alternating current, the battery cell inside the equipment body 11 may obtain and store electric energy, and as an alternative scheme, when the charging interface accesses the alternating current, the equipment body 11 may charge the battery pack 30 adapted thereto through the equipment input interface 111; in addition, the equipment body 11 can use the electric energy stored in the built-in electric core to charge the battery pack 30 adapted to the equipment input interface 111. The ac power coupled to the tool body 11 may also power a corresponding power tool, such as the blower device 20, via the tool output interface 112.

Of course, the equipment body 11 may also use a cable and a plug connected thereto as the scheme for receiving the alternating current, and as an alternative, the cable and the plug may be received in a cavity formed by the equipment body 11.

In order for the fan device 20 to obtain power from the equipment body 11, the fan device 20 is provided with a fan input interface 24, and the fan input interface 24 can be connected with power so as to supply power to the motor 22 in the fan device 20.

As shown in fig. 1, the cable 40 is used to connect the equipment output interface 112 and the fan input interface 24, and both ends of the cable are respectively provided with interfaces capable of adapting to the equipment output interface 112 and the fan input interface 24. When cable 40 is connected to both equipment output interface 112 and fan input interface 24, connecting equipment output interface 112 outputs electrical power to fan device 20.

Alternatively, as shown in fig. 3, the battery pack 30 may also directly supply power to the fan device 20 through the cable 40, and the backpack apparatus 10 merely helps the user to carry the battery pack 30, thereby reducing the influence of the battery pack 30 on the operator. Specifically, the cable 40 may realize the electric power transmission through the terminal interface 311b connected to the battery pack 30 and the blower access interface 24 of the blower device 20, respectively.

As shown in fig. 1 to 4, the blower device 20 is further provided with a blower coupling portion 25 capable of directly coupling the battery pack 30, the battery pack 30 can be coupled to the blower device 20, and the blower coupling portion 25 is provided with a connection terminal 251 capable of being connected to a connection terminal of the battery pack 30, so that the blower device 20 also has an interface capable of electrically connecting with the battery pack 30; when the battery pack 30 is coupled to the fan device 20, the battery pack 30 can transmit electric power through the connection constituted by the connection terminals 251 and the connection terminals of the battery pack 30, so that the fan device 20 and the battery pack 30 constitute a tool device capable of independently operating without depending on the harness 10 as shown in fig. 5.

As shown in fig. 6, the battery pack coupling part 311 includes: a middle groove 311c and guide

grooves

311d and 311e disposed at both sides thereof, wherein the

guide grooves

311d and 311e are symmetrically disposed and open in opposite directions to each other, the middle groove 311c opens in a direction in which the

guide grooves

311d and 311e are disposed, and the battery pack coupling part 311 may further include an end surface 311 f.

As shown in fig. 7, the blower coupling portion 25 includes: a middle protrusion 252 and guide

ribs

253, 254 provided at both sides thereof. The

guide ribs

253, 254 are symmetrically disposed on both sides of the middle protrusion 252. In addition, one end of the middle protrusion 252 is provided with a plurality of connection terminals 251 to form an interface capable of being coupled to the battery pack 30, and the other end of the middle protrusion 252 is provided with a stopper surface 255.

Referring to fig. 6 and 7, the

guide ribs

253 and 254 are shaped to correspond to the

guide grooves

311d and 311e, which enable the battery pack 30 to be coupled to the blower device 20 in a certain direction; when the battery pack is combined, the

guide ribs

253 and 254 are correspondingly inserted into the

guide grooves

311d and 311e, respectively, and the middle protrusion 252 is also accommodated in the middle groove 311c, so that the connection terminal 251 provided on the end surface thereof is inserted into the terminal interface 311a of the battery pack 30; the contact of the end surface 311f with the stop end surface 255 can stop the position of the battery pack 30, and at this time, if the relative sliding between the battery pack 30 and the blower device 20 is locked by the locking structure, the battery pack 30 cannot move in the opposite direction, i.e., the battery pack 30 and the blower device 20 can be integrated. Referring to fig. 1 to 3, the equipment connecting portion 13 may also adopt the same scheme, and further, one of the equipment input interface 111 and the blower device 20 for achieving electrical connection is adaptable to the battery pack 30, and as a further preference, they may be the same.

The fan arrangement 50 shown in figure 8 is provided with a fan joint 501, the fan joint 501 being similar to the fan joint 25 of the embodiment shown in figures 1 to 7, except that they are located differently with respect to the fan arrangement 50 as a whole. The cable 60 shown in fig. 8 has the same end as in the embodiment shown in fig. 1 to 7, which end can be adapted to the harness 10 and the battery pack 30; the other end of the cable 60 is provided as an adapter 601, the adapter 601 has the same structure as the battery pack coupling portion 311 of the battery pack 30, and can supply power to the fan device 50 when coupled to the fan coupling portion 501, except that the power source of the adapter 601 is from the port connected to the other end of the cable 60, and the battery pack 30 is stored by its own power storage, so the adapter 601 can also be regarded as a "dummy battery pack". This has the advantage that the power tool, which is fitted to the battery pack 30, can draw power by means of the harness 10 and the adapter 601.

It should be noted that the cable 40 may be fixedly connected to the harness 10, the cable 40 may be a part of the harness 10, and the corresponding cable 40 may also be fixedly connected to the fan device 20. The cable 60 may also be fixedly connected to the harness 10, thereby forming part of the harness 10.

The blower device 20 in the above embodiment may be the pruning device 70 shown in fig. 9, and as an embodiment, as shown in fig. 9, the backpack device 10 is provided with two device output interfaces 112 connected to the blower device 20 and the pruning device 70 through two cables 40, respectively, and it should be noted that the pruning device 70 may also be directly powered by combining with the battery pack 30.

As shown in fig. 9, the battery pack 30 in this system can be either coupled to the harness 10 to power the fan device 30 or directly coupled to the pruning device 70 that can be used independently of the harness 10 to power it. This undoubtedly increases the versatility of the power supply system formed by the battery pack 30 and the harness 10 so that it can be compatible with different power tools that can be used with and independently of the harness 10.

The mass of the battery pack 30 can be more than or equal to 1Kg, and the output voltage is more than or equal to 18V; when a plurality of battery packs 30 are provided in the system, the sum of the masses thereof is 1Kg or more.

Although the battery pack improves the endurance of the power supply due to the increased weight, for the handheld tool, the burden of the weight of the battery pack on the human hand influences the continuous work capability of the user from another aspect, and through experiments, when the weight of the battery pack exceeds 30% of the weight of the tool device (the weight of the work device is based on the capability and the working condition of the user), the improved electric quantity can not fully exert the capability of the battery pack due to the additional weight, especially when the mass of the battery pack is more than or equal to 1 Kg. Therefore, for power tools in which the weight of the battery pack exceeds 30% of the tool device, it is more suitable to use a backpack device for power supply.

As an alternative, the harness can incorporate a single battery pack or multiple battery packs at 30% or more by weight of the tool device, thereby increasing the ability to continue to supply power and reducing the burden on the user. In addition, the output voltage of the battery pack can be correspondingly improved by the mode of carrying the battery pack, the battery pack can be conveniently operated by a user after the 18V output battery pack is combined, once the output voltage exceeds 18V, the weight of the battery pack is improved, the user feels uncomfortable, and the output voltage of the battery pack can be improved to 56V or even higher by the scheme of carrying.

More specifically, since the fan device 20 has a higher requirement for flexibility during operation, the fan device 20 is lighter in weight and is often adapted to have a battery pack 30 with a mass greater than 50% of its mass, as mentioned above, the fan device 20 is more likely to be fatigued by a user when used alone in combination with the battery pack 30, and the backpack apparatus 10 is better experienced by the user and is able to increase the working time when used in combination with the battery pack 30.

The piggyback tool system 200 shown in FIG. 10 includes: the backpack 201, the blower device 202, the battery pack 203 and the connecting device 204, wherein the backpack 201, the blower device 202 and the battery pack 203 may adopt a scheme similar to that of the backpack 10, the blower device 20 and the battery pack 30 in the scheme shown in fig. 1; the difference is that a connecting device 204 is provided between the harness 201 and the fan device 202, the connecting device 204 being used to transmit forces between the harness 201 and the fan device 202, in particular the reaction forces to the air flow when the fan device 202 generates the air flow.

The power supply relationship among the backpack 201, the blower device 202, and the battery pack 203 may refer to the above-described technical solutions, and for example, the cable 205 may directly form an electrical connection between the battery pack 203 and the blower device 202.

The connection device 204 may be detachably connected to the harness 201 and the blower device 202, but they may also be non-detachable. Specifically, the connecting device 204 includes a first fitting portion 204a to be fitted into a groove provided in the backpack instrument 201 to achieve connection, the first fitting portion 204a is locked to make the connecting device 204 integral with the backpack instrument 201, and the first fitting portion 204a is unlocked to separate them into two separate parts. The connection device 204 may also include a second mounting portion 204b that may be removably attached by also being inserted into a recess in the fan assembly 202.

Of course, in the backpack tool system 200 shown in fig. 10, the battery pack 203 may output electric energy to the fan device 202 by using the backpack device 201, for example, the connection manner shown in fig. 2 is adopted, but an external cable often causes trouble to the user, so that a scheme of embedding the cable in the connection device 203 may be adopted.

As further shown in FIG. 11, the piggyback tool system 300 comprises: a backpack fitment 301, a blower device 302, a connection device 303, and a battery pack 304. The backpack device 301 is formed with a device input interface 301a for receiving the power of the battery pack 304, while the backpack device 301 is provided with a device output interface 301b for outputting the power of the battery pack 304, and the blower device 302 is provided with a blower input interface 302a, which enables the blower device 302 to directly adapt to the interface of the battery pack 304, so that the battery pack 304 forms a single unit with it, as shown in fig. 5.

The connection device 303 includes: the connector comprises a connecting seat 303a, a first connecting pipe 303b, a second connecting pipe 303c, an adapter 303d and a built-in cable 303e, wherein the built-in cable 303e is arranged in the first connecting pipe 303b and the second connecting pipe 303c, a rotary connection is formed between the first connecting pipe 303b and the second connecting pipe 303c, and the first connecting pipe 303b can be rotatably connected to the connecting seat 303 a; the connecting seat 303a is provided with an interface (not shown) capable of being butted with the equipment output interface 301b and capable of forming detachable connection with the bearing equipment 301, when the connecting seat 303a is combined with the bearing equipment 301, the interface of the connecting seat 303a is also butted with the equipment output interface 301b, and the physical connection and the electrical connection are realized. The adapter 303d has an interface structure and a connection structure similar to or the same as the battery pack 304, so that it can be connected with the fan device 302 into a whole and also realize interface butt joint, which is equivalent to a "fake battery pack" without a battery cell but capable of outputting electric energy, and can be combined with and supply power for the fan device 302 like the battery pack 304.

The terminal of the interface for introducing electric power of the connector holder 303a and the terminal of the interface for outputting electric power of the adapter 303d are connected by a built-in cable 303 e.

The backpack tool system 300 shown in fig. 11 adopts the way that the cable 303e is arranged in the connecting device 303 and adopts the scheme of the adapter 601 which is used as a 'false battery pack' as shown in fig. 8, so that the problems of cable exposure and interface adaptation with the fan device 302 for adapting the battery pack 304 are solved, and the connecting device 303 gives consideration to acting force and electric energy transmission.

As shown in fig. 12, the solution shown in fig. 11 can also be connected with other electric tools that can be adapted to the battery pack 304, such as the pruning device 305 shown in fig. 12, and at the same time, the blower device 302 can also be directly combined with the battery pack 304 as a stand-alone electric tool.

The piggyback tool system 100' as in fig. 13 comprises: a harness 10 ', a fan device 20 ' and a connecting device 30 '. In particular, the backpack tool system 100' is a backpack blower system.

Wherein the harness 10' may be used for carrying the user on the back. The fan device 20' may be used to generate and direct the airflow. The connecting device 30 'is used to integrate the harness 10' and the fan device 20 ', the connecting device 30' being connected to the harness 10 'and the fan device 20', respectively.

Specifically, as shown in fig. 14, the harness 10' may include: an equipment body 11 'and a harness 12'.

The equipment body 11 ' carries the battery pack 40 ', and the harness 12 ' is used to wrap around the user's body so that the user can carry the equipment body 11 '.

As shown in fig. 14 to 17, the fan device 20' may include: an airflow element 21 ', a motor 22 ' and an air duct 23 '; the airflow member 21 ' is arranged to be rotatable about a pivot axis a, and the motor 22 ' is used for driving the airflow member 21 ' to rotate about the pivot axis a; the air duct 23 ' is used for accommodating the airflow member 21 ' and guiding the airflow generated by the rotation of the airflow member 21 '.

As shown in fig. 13 to 17, the airflow member 21 ' of the fan device 20 ' rotates to generate airflow when driven by the motor 22 '; the airflow element 21 ' generates airflow and receives the reaction force of the airflow generated by the airflow element, and the airflow element 21 ' can apply the reaction force of the airflow to the fan device 20 ' because the airflow element 21 ' is a part of the fan device 20 '; since the connecting device 30 'is connected between the harness 10' and the fan device 20 ', the connecting device 30' can transmit the reaction force of the generated airflow received by the airflow member 21 'to the harness 10'; reducing the effect of the reaction force of the airflow on the operation of the fan apparatus 20'.

More specifically, as shown in fig. 17, 22 and 23, the motor 22 'is connected to the airflow member 21' through the driving shaft 24 'to drive it to rotate, so that the reaction force of the airflow received by the airflow member 21' is transmitted to the motor 22 'through the driving shaft 24', the motor 22 'is fixed in the air duct 23', and the motor 22 'transmits the reaction force of the airflow to the air duct 23' through the structure in which it is fixed.

Without the connecting means 30 ', when the user holds the operation knob 25' fixed to the outside of the air duct 23 ', the reaction force of the air flow is transmitted to the user through the operation knob 25' to give a feeling of fatigue in the long time operation. In the solution provided with the connection means 30 ', the connection means 30' are connected directly or indirectly to the air duct 23 ', the air duct 23' transmitting part of the reaction force of the air flow to the piggyback equipment 10 'through the connection means 30', thus reducing the fatigue of the user.

As an alternative, the air duct 23' may be made of a plastic material.

As shown in fig. 13 to 17, in the backpack tool system 100 ', the air duct 23 ' of the blower device 20 ' is formed with an air duct 231 ', the air duct 231 ' is used for guiding the air flow for the blower function, and the flow rate and the flow velocity of the air flow passing through the air duct 231 ' are enough to make the blower device 20 ' be used as a blower or a blower-sucker by a user.

As shown in fig. 13 to 17, the air duct 231 'formed by the air duct 23' is provided with an air inlet 231a 'and an air outlet 231 b'; the connection means 30 'are arranged outside the air duct 23'.

The connecting device 30 ' may be at least partially or completely located outside the air duct 231 ' formed by the air duct 23 ', and it should be noted here that the connecting device 30 ' is located outside the air duct 231 ', which means that the connecting device itself does not form a part of the air duct 231 ' or the air duct 231 ', or that the connecting device 30 ' does not have a guiding function for the air flow in the air duct 231 '.

As shown in fig. 13 to 17, the connecting device 30 ' is connected to the outside of the air duct 23 ', and the entire connecting device 30 ' is located outside the air duct 231 ' formed by the air duct 23 '.

As shown in fig. 15 to 17, the air inlet 231a ' and the air outlet 231b ' are respectively disposed at opposite ends of the air duct 23 ', and their relative positions are fixed, even when the user operates the fan device 20 ' to move the air duct 23 ', the air inlet 231a ' and the air outlet 231b ' are relatively stationary.

The air duct 23' may be formed by assembling a plurality of components into a whole, or may be formed by integrally molding.

The air duct 231 'is formed by a through cavity formed by the air duct 23', and one end of the through cavity is used as an air inlet 231a 'and the other end is used as an air outlet 231 b'. In order to protect the operation safety of the user, a protective mesh 26 'is disposed outside the air inlet 231 a'. The protective net 26 'prevents larger objects from entering the air duct 231', thereby ensuring safe use.

The duct of the backpack tool system 100' shown in fig. 13-17 is better suited to be equipped with an axial fan to achieve a larger air volume than an engine-type backpack blower; meanwhile, the air inlet of the backpack blower different from the engine type blower is positioned at the back and is difficult to observe, the air inlet 231a ' of the backpack tool system 100 ' is convenient to observe and control, and a user can ensure that the air inlet 231a ' avoids a dangerous position during operation; and the distance between the air inlet 231a 'and the air outlet 231 b' is shortened and the relative position is fixed, so that the user can obtain continuous and stable air flow and the service life problem caused by the damage of the hose is avoided.

Although the motor 22 'and the airflow member 21' are provided in the blower device 20 'as compared with the engine-type backpack blower, the blower device 20' transmits part of its gravity to the backpack device 10 'through the connecting device 30' due to the presence of the connecting device 30 ', thereby reducing the burden on the user's operating hand and obtaining a good operation feeling for the user.

As shown in fig. 13 to 19, the blower device 20 ' further includes an operating handle 25 ', the operating handle 25 ' is disposed outside the air duct 23 ' and is located approximately between the air inlet 231a ' and the air outlet 231b ' of the air duct 231 '; the position of the operating handle 25 'with respect to the air inlet 231 a' may be fixed, and the position of the operating handle 25 'with respect to the air outlet 231 b' may also be fixed.

Of course, in some embodiments in which the air inlet or the air outlet is adjustable, the relative positions of the operating handle and the air inlet or the air outlet may be changed due to the changed positions of the air inlet and the air outlet.

As shown in fig. 13 to 19, as a specific configuration, the operation knob 25 ' is fixedly attached to the outside of the air duct 23 ', and the approximate position of the operation knob 25 ' corresponds to the gravity center position G of the fan device 20 ' in the direction in which the air duct 231 ' extends.

As shown in fig. 16 to 18, as a concrete solution, the longitudinal axis B of the operating handle 25 'passes through the wind tunnel 231' when viewed in a plane (the drawing plane of fig. 18) perpendicular to the pivot axis a; and in this plane (the drawing plane of fig. 18) the line B ' in which the longitudinal axis B of the operating handle 25 ' is projected on is perpendicular to the line C which projects the point a ' in this plane through the pivot axis a.

With the above arrangement, when the user holds the operation handle 25 ', the direction of the small arm is substantially the same as the extending direction of the air duct 23 ', and the fan device 20 ' can be effectively operated.

As shown in fig. 19, as a specific solution, a damping element 27 ' is provided between the operating handle 25 ' and the casing forming the air duct 23 ', and the damping element 27 ' can reduce the vibration transmitted from the casing to the operating handle 25 '. More specifically, the air duct 23 ' is connected or formed with a fixing post 232 ', and a damping member 27 ' is fitted around the fixing post 232 ', and specifically, the damping member 27 ' is configured as a rubber washer, and the operating handle 25 ' is installed outside the damping member 27 '. The presence of the damping element 27 ' damps the forces transmitted between the operating handle 25 ' and the air duct 23 '.

As shown in fig. 16 to 17 and 20 to 21, the fan device 20 'further includes a circuit board 28', the circuit board 28 'being used to control the motor 22', the circuit board 28 'being electrically connected to at least the motor 22'.

In order to shorten the wiring distance, the circuit board 28 'is disposed closer to the motor 22', the harness 10 ', and the operating handle 25', and the circuit board 28 'is disposed between the operating handle 25' and the air inlet 231a 'of the air duct 23'. And the circuit board 28 'is disposed as close to the air inlet 231 a' as possible, so that part of the air flow entering the air inlet 231a 'can flow through the circuit board 28' for heat dissipation.

More specifically, the air duct 23 ' is formed with an accommodating chamber 233 ' in addition to the through chamber forming the air duct 231 '; the circuit board 28 'is disposed in the receiving cavity 233'.

At least two heat dissipation windows 233a ' and 233b ' are formed in the wall of the accommodating chamber 233 ', wherein one of the heat dissipation windows 233a ' is disposed at an edge of the intake opening 231a ', and the other heat dissipation window 233b ' is disposed between the intake opening 231a ' and the exhaust opening 231b ', and more particularly, the other heat dissipation window 233b ' is disposed between the intake opening 231a ' and the operating handle 25 '.

When the fan device 20 'generates air flow, the air flow flows into the accommodating cavity 233' from the heat dissipating window 233b 'due to the negative pressure generated at the air inlet 231 a', and then flows out of the accommodating cavity 223 'from the heat dissipating window 233 a'; the flow of the air flow carries away the heat in the receiving cavity 233 'and thus serves to dissipate the heat of the circuit board 28'.

The circuit board 28 'is also disposed between the two heat dissipation windows 233 a', 233b 'such that the circuit board 28' is located on a path of the air flow circulating through the heat dissipation windows 233a ', 233 b'.

In addition, the protective mesh 26 'is provided with meshes for communicating the heat radiation windows 233 a' with the outside. The receiving chamber 233 ' and the air duct 231 ' should be isolated except for the heat dissipating windows 233a ', 233b ' to ensure that the air flow does not directly flow into the air duct 231 '.

As shown in fig. 16 to 17 and 22 to 23, a cabin 234 'is provided in the air duct 231', the cabin 234 'is formed with a motor compartment 234 a', and the motor 22 'is accommodated in the motor compartment 234 a'; airflow member 21 ' is disposed outside motor compartment 234a ', and motor 22 ' is coupled to airflow member 22 ' by drive shaft 24 '.

When the airflow element 21 ' rotates, the reaction force of the airflow on the airflow element 21 ' is transmitted to the motor 22 ' through the driving shaft 24 ', and the motor 22 ' is transmitted to the wind tube 23 ' through the cabin 234 ' fixedly connected with the motor and then transmitted to the backpack assembly 10 ' through the connecting device 30 '.

The nacelle 234 ' can be constructed as a part of the air duct 23 ' or can be mounted as a separate component into the air duct 23 ' by mounting. As shown in fig. 23, the cabin 234 ' may be connected to the inside of the wind tunnel 23 ' by a bracket 235 ' to arrange cables and transmit force.

In addition, the motor 22' may be a brushless motor, and more particularly, an outer rotor brushless motor.

As shown in fig. 16 to 17 and 22 to 23, a built-in fan 29 'is provided in the motor compartment 234 a', and the built-in fan 29 'is driven by the motor 22'. Specifically, the airflow member 21 ' and the built-in fan 29 ' are respectively disposed at both sides of the motor 22 '. The bulkhead of the motor compartment 234a 'is provided with air flow holes 234 b', 234c ', and when the built-in fan 29' rotates, the generated air flow can flow into the motor compartment 234a 'through the air flow hole 234 b', and then flow out of the motor compartment 234a 'through the air flow hole 234 c'. Specifically, the built-in fan 29 'is disposed between the airflow through hole 234 b' and the motor 22 ', and the airflow through hole 234 c' is disposed between the airflow member 21 'and the motor 22'.

When the motor 22 ' rotates, the airflow direction generated by the airflow element 21 ' and the built-in fan 29 ' is opposite, so that the airflow formed by the airflow element 21 ' on the outer side and the airflow formed by the built-in fan 29 ' form a circulating airflow, and the heat of the motor 22 ' and other parts in the motor compartment 234a ' can be effectively dissipated.

As shown in fig. 13, the backpack tool system 100 ' may employ a detachable battery pack 40 ' to power the blower device 20 '.

As shown in fig. 13, 14, and 24 to 26, the pack body 11 ' of the harness 10 ' is formed with a harness coupling portion 113 ' that can couple the battery pack 40 ' to the harness body 11 '. The battery pack 40 'can be integrally combined with the set body 11' through the set combining part 113 'to be carried on the user's back.

As shown in fig. 13, 14, and 24 to 26, the harness body 11' includes: a back plate 111 ', a bearing table 112 ', and an equipment coupling portion 113 '. Wherein the set-up coupling portion 113 'includes a protrusion 113 a' formed to protrude above the load-bearing table 112 'behind the back plate 111' and guide ribs 113b 'formed at both sides of the protrusion 113 a'.

The bearing table 112 'is formed with a bearing table 112 a', and the bearing table 112a 'is disposed below the projection 113 a'.

The case 41 ' of the battery pack 40 ' is formed with a groove 411 ' capable of being fitted with the protrusion 113a ' and insertion grooves 412 ' capable of being fitted with the guide ribs 113b ' are formed at both sides of the groove 411 '. When the battery pack 40 'is combined to the backpack device 10', the guiding rib 113b 'and the slot 412' are matched to guide the battery pack 40 'to be combined to the device combining part 113' substantially along the first direction H, and due to the limiting effect of the guiding rib 113b 'and the slot 412', the battery pack 40 'can only move along the first direction H relative to the backpack device 10', and when the battery pack 40 'reaches a preset position along the first direction H, the movement of the battery pack 40' in the first direction H is locked, so that the battery pack 40 'and the device body 11' can form a whole. The guide rib 113b 'is provided so that the first direction H is substantially parallel to the vertical direction when the user wears the harness 10'.

In addition, in order to lock the battery pack 40 ', the housing 41' of the battery pack 40 'is provided with a locking groove 413', the backpack device 10 'is provided with a locking hook member 13', and the locking hook member 13 'can be inserted into the locking groove 413' to lock the battery pack 40 ', so that the battery pack 40' inserted in place cannot move in the first direction H. More specifically, the latch hook member 13 'is rotatably coupled to the accessory body 11', a portion of which is exposed from the accessory body 11 'to be inserted into the latch groove 413' for locking, another portion of which forms a portion for user manipulation for controlled unlocking, and an elastic member is coupled to the latch hook member 13 'to be always rotated in a direction for locking the battery pack 40' without external force.

As shown in fig. 26 in particular, in order to enable a user to separate the battery pack 40 ' in a relatively labor-saving manner, the carrying device 10 ' is provided with an ejection device 14 ' which is able to eject the battery pack 40 ' in the first direction H when the latching hook 13 ' is unlatched. Specifically, the ejecting device 14 'is disposed inside the load-bearing platform 112', and may include two ejecting levers 141 ', 142', one end of which is exposed from the load-bearing platform 112 'for contacting the battery pack 40', and the other end of which is biased by the biasing elements 15 ', 16' built into the load-bearing platform 112 ', the biasing elements 15', 16 'biasing one ends of the ejecting levers 141', 142 'to eject the battery pack 40' out of the locking position once the latch member 13 'no longer acts on the battery pack 40'. More specifically, the eject levers 141 ', 142 ' are at the load-bearing table 112a ' of the load-bearing table 112 ', the load-bearing table 112a ' primarily serving to stop the battery pack 40 ' and enable its weight to be transferred to the harness 12 '.

As shown in fig. 13, 14 and 24 to 26, the back plate 111 ' in the equipment body 11 ' is mainly used for fixing the shoulder strap 12 ' and directly contacts with the back of the user; the main portion of the harness 12 'is disposed on the front side of the back plate 111', and the equipment coupling portion 113 'is disposed on the rear side of the back plate 111'.

The load bearing table 112a 'of the load bearing table 112' is substantially planar. In one embodiment, the load-bearing platform 112a 'is substantially perpendicular to the direction in which the back panel 111' extends. When the user wears the harness 10 ', the back plate 111' can be in full contact with the back of the user to obtain a larger contact area, the back plate 111 'is approximately vertical, and the bearing table 112 a' is approximately parallel to the horizontal direction for better supporting the battery pack 40 ', so that the bearing table 112 a' is perpendicular to the back plate 111 'to obtain a good user experience and to effectively support the battery pack 40'.

In the backpack tool system 100 ' shown in fig. 13, the connection device 30 ' forms a detachable connection with the backpack attachment 10 '. Of course, they may also constitute a non-detachable connection.

Specifically, as shown in fig. 13, 14, 24, 26 to 29, the harness 10 ' further includes a harness connecting portion 114 ', the harness connecting portion 114 ' serving to detachably connect the connecting device 30 ' to the harness 10 ', as a specific solution, the harness connecting portion 114 ' being provided below the harness coupling portion 113 '.

The coupling device 30 ' includes a coupling holder 31 ', the coupling holder 31 ' is formed with a protrusion 311 ', both sides of which are formed with guide grooves 311a ', and the set coupling part 114 ' is formed with receiving grooves 114a ' capable of receiving the protrusion 311 ', both sides of which are provided with guide ribs 114b ' capable of being engaged with the guide grooves 311a ', and the coupling holder 31 ' can be inserted into the set coupling part 114 ' of the backpack set 10 ' in the second direction D by engagement of the guide grooves 311a ' and the guide ribs 114b '.

More specifically, the mounting connection part 114 'is formed at the bottom of the bearing platform 112', so that the combined battery pack 40 'and the connected connection seat 31' are respectively located at both sides of the bearing platform surface 112a 'of the bearing platform 112'.

When the whole formed by the bearing device 10 'and the connecting device 30' is placed, the connecting seat 31 'can be used as a base to support the bearing device 10', and meanwhile, when the user operates, the connecting device 30 'is approximately arranged at the waist position of the user, so that the size of the device body 11' in the vertical direction is shortened, the device is more suitable for human engineering, and good operation experience is provided for the user.

In addition, the connecting holder 31 'is provided with a locking member 312' capable of automatically returning, the locking member 312 'comprises a locking hook part 312 a' and a locking button part 312b ', the device connecting part 114' is formed with a locking groove 114c 'capable of enabling the locking hook part 312 a' to be embedded, when the connecting holder 31 'is inserted in place, the locking hook part 312 a' is clamped in the locking groove 114c ', and the movement of the locking hook part 312 a' and the locking groove is locked along the second direction D, so that the connecting holder 31 'and the bearing device 10' form a whole; when necessary, the locking button portion 312b ' is pulled to rotate or slide the locking member 312 ' so that the locking hook portion 312a ' exits the locking groove 114c ', and the connecting seat 31 ' exits in the inserting direction, thereby separating the connecting seat 31 ' from the bearing device 10 '.

Of course, the positions of the locking member 312 'and the locking slot 114 c' may be interchanged.

It should be noted that the above description of the top, bottom, left, right, front, back, top and bottom are relative positions when the user wears the backpack tool system 100' during normal use, and are only for convenience of describing relative positional relationships of corresponding structures or components and are not absolute positional relationships.

In the backpack tool system 100 ' shown in fig. 13, the connection device 30 ' is detachably connected to the blower device 20 '. Of course, they may also constitute a non-detachable connection.

As shown in fig. 13, 14 and 28, the fan unit 20 'is formed by a fan cylinder 23' to form a fan connecting portion 234 ', the connecting device 30' includes a mounting sleeve 32 'capable of adapting to the shape of the fan connecting portion 234', the mounting sleeve 32 'may be composed of two separable portions 321', 322 ', the two portions 321', 322 'may be assembled or separated by corresponding quick-release structures, a user may detach the two portions 321', 322 'to adapt the mounting sleeve 32' to the fan connecting portion 234 ', and then combine the two portions 321', 322 'into a whole by the quick-release structures, and the two portions 321', 322 'are combined into a whole and fastened to the outer side of the fan connecting portion 234' at the same time of combining the two portions 321 ', 322' into a whole so as to connect the connecting device 30 'to the fan unit 20'.

Of course, the connection device 30 'may also be detachably connected to the fan device 20' in a manner similar to the connection seat 31 'being detachably connected to the equipment body 11', for example, by means of a slider and a slide groove, and then locked and unlocked relative to each other by a corresponding locking mechanism.

As shown in fig. 13, 14 and 28 to 30, the connecting device 30 'further includes a first connecting arm 33', the first connecting arm 33 'is used for connecting the fan device 20', and the first connecting arm 33 'and the connecting seat 31' form a rotational connection with the first axis E as an axis, that is, the first connecting arm 33 'can rotate relatively with respect to the connecting seat 31' with the first axis E as an axis. The fan device 20 'connected with the first connecting arm 33' can rotate around the first axis E when the first connecting arm 33 'rotates relative to the connecting seat 31', so that the fan device 20 'can rotate according to the requirements of users, in actual operation, the fan device 20' is not required to rotate for 360 degrees, and on the contrary, for the consideration of safety and other factors, the tool is expected to swing within a preset angle range (small-range rotation); through experiments, the swing range of the first connecting arm 33' is preferably 120 degrees.

In order to allow the user to operate the fan device 20 ' more flexibly and to increase the degree of freedom of operation, as shown in fig. 28, the connecting device 30 ' further includes a second connecting arm 34 ', the second connecting arm 34 ' is used to connect the connecting seat 31 ' and the first connecting arm 33 ', the first connecting arm 33 ' is indirectly connected to the connecting seat 31 ' through the second connecting arm 34 ', a rotational connection is also formed between the first connecting arm 33 ' and the second connecting arm 34 ', and the axis of their relative rotation is the second axis F, and more specifically, the range of their relative rotation is preferably 120 degrees. The relative rotation of the first and second link arms 33 ', 34' provides the fan apparatus 20 'with a greater degree of freedom, allowing the fan apparatus 20' to sweep a range both laterally and vertically while standing still.

As a specific scheme, the first axis E is perpendicular to the second axis F, so that the spherical surface can be covered by the minimum rotation connection, and the requirement of operation on the degree of freedom is met. The first connecting arm 33 'is connected to the fan unit 20', and the second connecting arm 34 'is connected to the connecting holder 31'.

The second connecting arm 34 'can be directly connected in a rotatable manner to the connecting base 31', part of which is inserted into the connecting base 31 ', the inserted part forming a cylindrical surface, and the corresponding connecting base 31' also forming a cylindrical surface adapted thereto, which are connected in a rotatable manner by means of the mating cylindrical surfaces.

The second connecting arm 34 'may be a hollow structure to arrange the cables, and a reinforcing tube 35' is provided in the connecting socket 31 ', the reinforcing tube 35' being partially insertable into a cavity of the second connecting arm 34 'such that the second connecting arm 34' is supported by both the connecting socket 31 'and the reinforcing tube 35' on the inner and outer sides.

The first connecting arm 33 ' and the second connecting arm 34 ' can be connected in rotation by means of a bearing 38 ' built into them.

Further, between the first connecting arm 33 'and the fan device 20', there are provided: the vibration damping member 36 ' is used for damping vibration transmitted from the fan device 20 ' to the first connecting arm 33 '. As a specific example, the cushioning element 36' may be formed by a coil spring.

The connecting device 30' can be divided into two parts: one of which is a rigid member, such as the first connecting arm 33 ', which maintains its shape to transmit forces when subjected to forces between the harness 10 ' and the fan unit 20 '. The other part is an elastic element, such as a damping element 36 ', which changes its shape damping action when subjected to forces between the carrying device 10 ' and the fan unit 20 '. The connecting device 30 ' formed by them can transmit both pressure and tension, when transmitting pressure, it can make the fan device 20 ' receive the reaction force of the air flow and transmit to the bearing device 10 ', when transmitting tension, the connecting device 30 ' can make the bearing device 10 ' bear part of the gravity of the fan device 20 ' through the transmission of the connecting device 30 '. In addition, the elastic part can change itself to buffer or store energy when being subjected to external force, thereby improving the user experience.

In the backpack tool system 100 ' shown in fig. 13, 14, 24, 25 and fig. 29 and 30, the power portion of the backpack device 10 ' that is connected to the battery pack 40 ' may be basically similar.

More specifically, as shown in fig. 25, the case 41 'of the battery pack 40' is formed with a plurality of terminal openings 414 'and a plurality of connection terminals (not shown) inside the case 41'. As shown in fig. 24, a plurality of connection tabs 115 'are provided at the protrusion 113 a' of the set-up joint 113 ', and when the battery pack 40' is inserted to the position shown in fig. 13, the connection tabs 115 'are inserted into the corresponding terminal openings 414' to be connected with the connection terminals to transmit electric power.

The cable or circuit board connected to the connection pad 115 'is provided inside the equipment body 11', and if the backpack equipment 10 'is only required to serve as a passage for electric power transmission without a circuit control function or the like, the cable connected to the connection pad 115' may be directly connected to the fan device 20 ', or a circuit board and corresponding electronic components may be provided therein if a certain control function is required at the backpack equipment 10', so that the connection pad 115 'is electrically connected to them and then electrically connected to the fan device 20' by them.

In order to reduce the influence of peripheral cables on the operation, the cables 37 ' forming the electrical connection between the harness 10 ' and the fan device 20 ' in the backpack tool system 100 ' shown in fig. 13, 14, 24, 25 and 29, 30 are integrated into the connecting device 30 '.

In the backpack tool system 100 ', the connecting device 30 ' is detachable relative to both the backpack device 10 ' and the blower device 20 ', both the backpack device 10 ' and the blower device 20 ' are formed with corresponding interfaces, the connecting device 30 ' is provided with interfaces capable of being butted with the backpack device 10 ' and the blower device 20 ', and both ends of the built-in cable 37 ' are connected with the outside through the two interfaces of the connecting device 30 '.

In particular, a backpack tool system 600 as shown in fig. 33 can be used, which can be configured as described above and in a further development thereof, in addition to the tool device 602 being a chain saw.

Alternatively, the backpack tool system 700 shown in fig. 34 may employ the previously described versions and their extensions, except that the tool device 702 is a power drill.

The tool assembly may also be a lawn mower, a lawnmower, an electric circular saw, an angle grinder, a sander, a reciprocating saw, or the like.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims

1. A backpack tool system comprising:

the bearing equipment is used for bearing the user;

an electric tool for operation by a user;

a battery pack for supplying electric power;

wherein the content of the first and second substances,

the backpack apparatus includes:

an equipment input interface including a connection terminal;

a harness for encircling a user's body so that the user can carry the equipment body;

a back plate for securing a harness;

a connecting device capable of transmitting an acting force between the electric tool and the backpack equipment;

the connecting device is respectively connected to the electric tool and the backpack equipment;

the electric tool includes:

a tool coupling portion including a connection terminal;

the battery pack includes:

the battery cell is used for storing electric energy;

a battery pack connection terminal which can be connected to the connection terminal of the equipment input interface or the connection terminal of the tool coupling portion to transmit electric power;

the battery pack can power both the power tool when coupled to the backpack instrument and the power tool when coupled to the power tool;

the electric tool is a fan device;

the fan device comprises an airflow element, a motor and an air duct;

the sum of the weights of the battery packs which can be combined by the bearing equipment is more than 1 Kg.

2. The piggyback tool system of claim 1, wherein:

the battery pack also comprises a battery output interface;

the electric tool also comprises a tool input interface, and the tool input interface and the battery output interface transmit electric energy through a cable.

3. The piggyback tool system of claim 1, wherein:

the piggyback equipment comprises a plurality of the equipment input interfaces.

4. The piggyback tool system of claim 1, wherein:

the power tool further comprises a tool input interface;

the bearing equipment also comprises an equipment output interface;

the equipment input interface is electrically connected with the equipment output interface;

when the battery pack is combined to the bearing equipment, the battery pack connecting terminal is electrically connected with the equipment input interface; the equipment output interface outputs electric energy to the tool input interface through a cable.

5. The piggyback tool system of claim 4, wherein:

the backpack equipment comprises more than two equipment output interfaces which can be used independently.

6. The piggyback tool system of claim 1, wherein:

the backpack apparatus includes:

the equipment body is provided with the equipment input interface;

an adapter including an equipment output interface and a terminal interface mated with the connection terminal of the tool coupling portion;

cables connected to the equipment body and the adaptor, respectively;

the equipment input interface and the equipment output interface are electrically connected through the cable.

7. The piggyback tool system of claim 1, wherein:

the tool further comprises a tool input interface;

the bearing equipment also comprises an equipment output interface which is electrically connected with the equipment input interface;

the connecting device includes:

a device input interface connected with the equipment output interface when the connecting device is combined with the backpack equipment;

the built-in cable is electrically connected with the equipment output interface and the tool input interface and is used for transmitting the electric energy accessed by the equipment input interface to the electric tool;

the built-in cable is arranged in a wiring cavity formed by the connecting device.

8. The piggyback tool system of claim 7, wherein:

the connecting device is detachably connected with the bearing equipment;

the device input interface is arranged at the end part of the connecting device connected with the bearing equipment.

9. The piggyback tool system of claim 7, wherein:

the connecting device is detachably connected with the bearing equipment;

the connecting device is detachably connected with the electric tool;

the device input interface and the device output interface are respectively arranged at two opposite ends of the connecting device.