CN106181903B

CN106181903B - Backpack tool system

Info

Publication number: CN106181903B
Application number: CN201510624563.2A
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: 2020-09-01
Anticipated expiration: 2035-09-25
Also published as: CN106194789A; CN106192835A; CN106181901B; CN106192834A; CN205184696U; CN106181904A; CN205776021U; CN106181904B; CN106181903A; CN106181901A; CN106181902A; CN106192834B; CN106194789B; CN106181902B; CN106192835B

Abstract

The invention discloses a backpack tool system, comprising: tool means for user operation; the bearing equipment is used for bearing the user on the back; and a connection device capable of transmitting an acting force between the tool device and the carrying equipment; wherein, the tool device includes: a function for implementing a tool function; a motor for driving the functional member; a tool housing for housing a motor; the backpack apparatus includes: the equipment body is used for connecting or accommodating a power supply device; a harness for encircling a user's body; the connecting device is connected to the tool device and the harness, respectively. The invention has the advantages that: the invention has the advantages that: bear and equip and can help the user to alleviate the influence that the weight of battery package brought to the operation tool device, connecting device can transmit the effort between tool device and bear equipment simultaneously, has alleviateed user's operation burden, has improved the comfort level of user's operation.

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.

The blower is a general name of two air flow devices, namely a blower and a blowing and sucking machine, is a common power tool and can be used for cleaning or collecting plant debris in gardening work.

The existing fan is divided into an electric fan and an engine according to a driven mode, wherein the electric fan adopts a motor as power equipment and electric energy as a power source, and the fan of the engine adopts a fuel engine as the power equipment and fuel as a power source.

Electric fans are gradually replacing engine-type fans due to their energy-saving and environmental-friendly advantages.

The existing electric fan adopting the battery pack often enables the battery pack to be directly combined to the fan body, the battery pack cannot be too heavy in order to guarantee that a user can flexibly operate the electric fan and provide better operation experience, and therefore the existing fan cannot adapt to the requirement of long-time work.

Disclosure of Invention

A backpack tool system comprising: tool means for user operation; the bearing equipment is used for bearing the user on the back; and a connection device capable of transmitting an acting force between the tool device and the carrying equipment; wherein, the tool device includes: a function for implementing a tool function; a motor for driving the functional member; a tool housing for housing a motor; the backpack apparatus includes: the equipment body is used for connecting or accommodating a power supply device; a harness for encircling a user's body; the connecting device is connected to the tool device and the harness, respectively.

Further, the piggyback tool system further comprises: a battery pack for powering the tool device; the backpack apparatus includes: an equipment combining part which can enable the battery pack to be detachably combined to the bearing equipment; an equipment connecting portion enabling the connecting device to be detachably connected to the backpack equipment; the equipment combining part is positioned above the equipment connecting part.

Further, the connecting device includes: a connection socket for connecting to the equipment connection part; the equipment combining part is positioned above the connecting seat when the connecting seat is connected to the equipment connecting part.

Further, the equipment combining part guides the battery pack to be combined to the bearing equipment along the first direction; the equipment connecting part guide connecting seat is connected to the bearing device along a second direction; the first direction is perpendicular to the second direction.

Further, the equipment body includes: a back plate for fixing the straps; the braces are arranged on the front side of the back plate, and the equipment combining part and the equipment connecting part are arranged on the rear side of the back plate.

Further, the equipment coupling portion includes: the bearing table is used for supporting the weight of the battery pack;

the bearing platform is provided with: the bearing table top is perpendicular to the back plate.

Further, the connecting device includes: a connection socket for connecting to the equipment connection part; when the connecting seat is connected to the equipment connecting part, the bearing table surface is positioned above the connecting seat; when the connecting seat is connected to the equipment connecting part and the battery pack is combined to the equipment combining part, the battery pack and the connecting seat are respectively positioned on two sides of the bearing table board.

Further, the equipment coupling portion includes: the bearing table is used for supporting the weight of the battery pack; and the lock catch is used for locking the battery pack.

Further, the lock catch is arranged above the bearing platform.

Further, bear and equip and be equipped with in bearing platform department: and the ejection device is used for ejecting the battery pack when the lock catch is unlocked.

Further, the connecting device includes: a connecting seat for connecting to a backpack rig; a first connecting arm for connecting the connecting socket and the tool device; the first connecting arm and the connecting seat form a rotary connection by taking the first axis as a shaft.

Further, the connecting device further comprises: the second connecting arm is used for connecting the connecting seat and the first connecting arm; the second connecting arm and the first connecting arm form rotary connection with the second axis as an axis.

Further, the first axis is perpendicular to the second axis.

Further, the first connecting arm is connected to the tool device; the second connecting arm is connected to the connecting seat.

Further, be equipped with between first linkage arm and the tool device: and the shock absorption element is used for absorbing the shock transmitted to the first connecting arm by the tool device.

Further, the tool device further comprises: the air duct is used for guiding the airflow generated by the airflow element; the functional part is a fan, and the motor is used for driving the fan to rotate; when the fan rotates, the connecting device transmits the reaction force of the air flow received by the fan to the bearing equipment.

The invention has the advantages that: the invention has the advantages that: bear and equip and can help the user to alleviate the influence that the weight of battery package brought to the operation tool device, connecting device can transmit the effort between tool device and bear equipment simultaneously, has alleviateed user's operation burden, has improved the comfort level of user's operation.

Drawings

FIG. 1 is a schematic structural diagram of a backpack blower system;

FIG. 2 is an exploded schematic view of the main components of the backpack blower system shown in FIG. 1;

FIG. 3 is a schematic structural view of a fan unit in the backpack fan system of FIG. 1;

FIG. 4 is a perspective view of the internal structure of the blower device shown in FIG. 3;

FIG. 5 is a schematic plan view of the internal structure of the blower device shown in FIG. 3;

FIG. 6 is a schematic view of the operating handle and air duct of FIG. 3 in a cross-section perpendicular to the pivot axis;

FIG. 7 is a schematic structural view of a connection part of the operating handle and the air duct in FIG. 3;

fig. 8 is a schematic perspective view of the air duct in fig. 3 at the position where the air duct forms the accommodating cavity;

fig. 9 is a schematic plan view of the air duct in fig. 3 where the air duct forms a receiving chamber;

fig. 10 is a schematic perspective view of an inner part structure of the duct of fig. 3;

fig. 11 is a schematic plan view of an inner part structure of the duct in fig. 3;

fig. 12 is a schematic structural diagram of a backpack blower system with a built-in battery cell;

FIG. 13 is a schematic diagram of a backpack blower system that can incorporate multiple battery packs;

FIG. 14 is a schematic view of the construction of the equipment body in the backpack blower system shown in FIG. 1;

FIG. 15 is a schematic diagram of a battery pack of the backpack blower system of FIG. 1;

FIG. 16 is a schematic view of the structure of the ejector in the body of the kit of FIG. 14;

FIG. 17 is a schematic diagram of a backpack blower system having a battery compartment;

FIG. 18 is a schematic view of a portion of the structure of the fitting body and the connecting means for coupling in FIG. 1;

FIG. 19 is a schematic view of the connection device of the backpack blower system shown in FIG. 1;

FIG. 20 is a schematic view of the internal structure of the connecting section and the second connecting arm of FIG. 19;

FIG. 21 is a cross-sectional view of the attachment block and second attachment arm of FIG. 19;

FIG. 22 is a schematic structural view of a piggyback tool system;

FIG. 23 is an exploded schematic view of the major components of the backpack tool system shown in FIG. 22;

FIG. 24 is a backpack blower system with an adapter;

FIG. 25 is a schematic view of the battery pack of FIG. 24 integrated with a blower device;

FIG. 26 is a schematic view of a backpack tool system having two different tools;

FIG. 27 is a schematic view of a backpack tool system with a chain saw as the tool device;

fig. 28 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.

As shown in fig. 1 and 2, the backpack blower system 100 includes: a harness 10, a fan unit 20 and a connection unit 30.

The harness 10 may be used, among other things, for a user to carry on his back. The fan device 20 may be used to generate and direct airflow. The connecting means 30 is used to integrate the harness 10 and the fan device 20, and the connecting means 30 is connected to the harness 10 and the fan device 20, respectively.

Specifically, as shown in fig. 2, 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 body of the user so that the user can carry the equipment body 11.

As shown in fig. 2 to 5, the fan device 20 may include: an airflow element 21, a motor 22 and an air duct 23; the airflow member 21 is 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. 1 to 5, the airflow member 21 of the fan apparatus 20 rotates to generate an 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 act on the fan device 20 due to the fact that 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 airflow member 21 to the generated airflow 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. 5, 10 and 11, the motor 22 is connected to the airflow member 21 through the drive shaft 24 so as 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 drive 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 grips the operation knob 25 fixed on 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 operation for a long time. In the solution provided with the connection means 30, the connection means 30 is 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 harness 10 through the connection means 30, thereby reducing the fatigue of the user.

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

As shown in fig. 1 to 5, in the backpack blower 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 implementing 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 used as a blower or a blower-sucker by a user.

Specifically, the airflow member 21 is an axial fan that generates an airflow in a direction substantially parallel to the pivot axis a when it rotates about the pivot axis a. In addition, a section of the air duct 231 may be formed along a substantially straight line, for example, a section from the airflow member 21 to the air outlet 231b, and the whole air duct 231 may also be formed along a substantially straight line.

As shown in fig. 1 to 5, 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 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 guide the airflow in the air duct 231.

As shown in fig. 1 to 5, 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. 3 to 5, 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 air duct 23 is moved by a user operating the fan device 20, 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 cover 26 prevents larger objects from entering the air duct 231, thereby ensuring the use safety.

The duct of backpack blower system 100 shown in fig. 1-5 is more suitable for disposing an axial fan to obtain 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 blower system 100 is convenient to observe and control, and a user can ensure that the air inlet 231a avoids dangerous positions during operation; and the distance between the air inlet 231a and the air outlet 231b 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, the blower device 20 transmits part of the gravity thereof to the harness 10 through the connecting device 30 due to the presence of the connecting device 30, so that the burden on the user's operating hand is reduced and the user can obtain a good operation feeling, compared to an engine-type backpack blower.

As shown in fig. 1 to 7, 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 231a may be fixed, and the position of the operating handle 25 with respect to the air outlet 231b 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. 1 to 7, 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. 4 to 6, as a concrete aspect, the longitudinal axis B of the operating handle 25 passes through the wind tunnel 231 when viewed in a plane (the plane of the drawing of fig. 6) perpendicular to the pivot axis a; and in this plane (the drawing plane of fig. 6) 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. In addition, the angle formed by the longitudinal axis B of the operating handle 25 and the pivot axis A (the angle is defined as the intersection of two straight lines L1 and L2 to form four corners which are two pairs of vertical angles. to distinguish these angles, the smaller of the two pairs of vertical angles is called the angle formed by L1 and L2. the angle is defined as 0 degrees or more and 90 degrees or less) is 45 degrees or more. 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. 7, 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 to or formed with a fixing post 232, and the 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. 4 to 5 and 8 to 9, 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 231a as possible, so that part of the air flow entering the air inlet 231a can flow through the circuit board 28 to dissipate heat.

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 accommodation chamber 233.

The wall of the accommodating chamber 233 is at least provided with two

heat dissipating windows

233a, 233b, wherein one heat dissipating window 233a is disposed at the edge of the air inlet 231a, and the other heat dissipating window 233b is disposed between the air inlet 231a and the air outlet 231b, and more specifically, the other heat dissipating window 233b is disposed between the air inlet 231a and the operating handle 25.

When the fan device 20 generates an 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 231a, 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 to perform a heat dissipation function on the circuit board 28.

The circuit board 28 is also disposed between the two

heat dissipation windows

233a, 233b such that the circuit board 28 is located on the path of the airflow 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 233a 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. 4 to 5 and fig. 10 to 11, a cabin 234 is provided in the air duct 231, the cabin 234 is formed with a motor compartment 234a, 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 member 21 rotates, the reaction force of the airflow to the airflow member 21 is transmitted to the motor 22 through the driving shaft 24, and the motor 22 is transmitted to the wind duct 23 through the cabin 234 fixedly connected thereto and then transmitted to the backpack assembly 10 through the connecting device 30.

The nacelle 234 may be constructed as a part of the air duct 23, or may be mounted as a separate component into the air duct 23 by mounting. As shown in fig. 11, the nacelle 234 may be connected to the inside of the air duct 23 by a bracket 235 to arrange cables and transmit force.

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

As shown in fig. 4 to 5 and fig. 10 to 11, a built-in fan 29 is provided in the motor compartment 234a, 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 on both sides of the motor 22. The wall of the motor compartment 234a is provided with air flow holes 234b, 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 234b and then flow out of the motor compartment 234a through the air flow hole 234 c. Specifically, built-in fan 29 is disposed between airflow hole 234b and motor 22, and airflow hole 234c is disposed between airflow member 21 and motor 22.

When the motor 22 rotates, the airflow direction of the airflow element 21 is opposite to that of the built-in fan 29, so that the airflow formed outside the airflow element 21 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 radiated.

As shown in fig. 1, the backpack blower system 100 may employ a detachable battery pack 40 to power the blower device 20.

In the backpack blower system 100 'shown in fig. 12, the backpack assembly 10' is provided with a built-in battery, and the backpack assembly 10 'is provided with a battery compartment 11', wherein the built-in battery constitutes a battery and is connected to the blower device 20 'through a cable 101' to supply power thereto.

Compared with the solution shown in fig. 12, the solution shown in fig. 1 employs a detachable battery pack 40 so that the user can replace the battery pack 40 to achieve the purpose of improving the working time.

Backpack blower system 100 "as shown in FIG. 13 may employ a plurality of detachable and replaceable battery packs 40" as a source of electrical energy.

As shown in fig. 1, 2, and 14 to 16, the equipment body 11 of the harness 10 is formed with an equipment coupling portion 113 that enables the battery pack 40 to be coupled to the equipment 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. 1, 2, and 14 to 16, the backpack blower system 100 includes the equipment body 11: a back plate 111, a bearing table 112 and an equipment joint 113. Wherein the equipment combining portion 113 includes a protrusion 113a formed to protrude above the 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 112a, 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 fitting with the projection 113a and slots 412 capable of fitting with the guide ribs 113b are formed at both sides of the groove 411. When the battery pack 40 is combined to the bearing 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 along the first direction H, 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 bearing device 10, 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, and 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 apparatus 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 13 is rotatably connected to the device body 11, a portion of which is exposed from the device body 11 to be inserted into the latch groove 413 for locking, and another portion of which forms a portion for user operation for controlled unlocking, and an elastic member is connected to the latch hook 13 so as to be rotated in a direction of locking the battery pack 40 without receiving an external force.

As shown in fig. 16 in particular, in order to enable the user to separate the battery pack 40 in a less effort, the harness 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 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 so that the other ends thereof 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, and the load bearing table 112a is mainly used to stop the battery pack 40 and enable the gravity thereof to be transmitted to the shoulder strap 12.

As shown in fig. 1, 2 and 14 to 16, the back plate 111 in the equipment body 11 is mainly used for fixing the shoulder strap 12 and directly contacting 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 112 has a load-bearing table surface 112a that 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 backpack device 10, the back plate 111 can be in full contact with the back of the user to obtain a large contact area, the back plate 111 is in a substantially vertical direction, and the load-bearing table 112a is substantially parallel to the horizontal direction for better supporting the battery pack 40, so that the load-bearing table 112a is perpendicular to the back plate 111 to obtain a good user experience and effectively support the battery pack 40.

In addition, as shown in the backpack blower system 200 of fig. 17, the battery pack 300 may be coupled to the backpack apparatus 201 through the opening groove 201a formed by the backpack apparatus 201.

With the above solution, a detachable or movable protective cover may also be provided to protect the battery pack 300 coupled to the harness 201.

In the backpack blower system 100 shown in fig. 1, the connection device 30 is detachably connected to the backpack instrument 10. Of course, they may also constitute a non-detachable connection.

Specifically, as shown in fig. 1, 2, 14, 16 and 18 to 20, 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, and as a specific solution, the harness connecting portion 114 is provided below the harness coupling portion 113.

The connecting device 30 includes a connecting holder 31, the connecting holder 31 is formed with a protrusion 311, guide grooves 311a are formed on both sides of the protrusion 311, an equipment connecting portion 114 is formed with a receiving groove 114a capable of receiving the protrusion 311, guide ribs 114b capable of being engaged with the guide grooves 311a are provided on both sides of the receiving groove 114a, and the connecting holder 31 can be inserted into the equipment connecting portion 114 of the bearing equipment 10 in the second direction D by engagement of the guide grooves 311a and the guide ribs 114 b.

More specifically, the mounting connection portion 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 two sides of the bearing platform surface 112a of the bearing platform 112.

When the whole that equipment 10 and connecting device 30 constitute is born and is placed, connecting seat 31 can constitute the support to bearing equipment 10 as the base, and simultaneously when user operation, connecting device 30 roughly sets up in the position of user's waist, has not only shortened the size of equipping the body 11 in vertical direction, accords with human-machine engineering moreover more, provides good operation experience for the user.

In addition, the connecting seat 31 is provided with a locking piece 312 capable of automatically resetting, the locking piece 312 comprises a locking hook part 312a and a locking button part 312b, the equipment connecting part 114 is provided with a locking groove 114c capable of enabling the locking hook part 312a to be embedded, when the connecting seat 31 is inserted in place, the locking hook part 312a is clamped with the locking groove 114c to lock the movement of the locking groove 114c along the second direction D, and therefore the connecting seat 31 and the bearing equipment 10 form a whole; when necessary, the locking knob portion 312b is pulled to rotate or slide the locking member 312, so that the locking hook portion 312a is withdrawn from the locking groove 114c, and the connecting holder 31 is withdrawn in the inserting direction, thereby separating the connecting holder 31 from the backpack apparatus 10.

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

It should be noted that, the above description is about the relative positions of the user carrying the backpack blower system 100 in normal use, which is only for convenience of describing the relative positional relationship of the corresponding structures or components and is not an absolute positional relationship.

In the backpack blower system 100 shown in fig. 1, 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. 1, 2 and 19, the fan device 20 is formed by a fan drum 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 and 322, the two

portions

321 and 322 may be assembled or separated by corresponding quick-release structures, a user may detach the two

portions

321 and 322 to enable the mounting sleeve 32 to be adapted to the fan connecting portion 234, and then combine the two

portions

321 and 322 into a whole by the quick-release structures, and the two

portions

321 and 322 are fastened to the outer side of the fan connecting portion 234 while being combined into a whole, so as to enable the connecting device 30 to be connected to the fan device 20.

Of course, the connection device 30 can 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-runner combination, and then locked and unlocked relative to each other by a corresponding locking mechanism.

As shown in fig. 1, 2 and 19 to 21, the connecting device 30 further includes a first connecting arm 33, the first connecting arm 33 is used for connecting the fan device 20, the first connecting arm 33 and the connecting base 31 form a rotational connection with the first axis E as an axis, that is, the first connecting arm 33 can rotate relative to the connecting base 31 with the first axis E as an axis. The fan device 20 connected to the first connecting arm 33 can rotate around the first axis E when the first connecting arm 33 rotates relative to the connecting base 31, so that the fan device 20 can rotate according to the user's requirement, and in actual operation, the fan device 20 does not need to rotate 360 degrees, and conversely, for the sake of safety and other factors, the tool is expected to swing within a preset angle range (small-range rotation); through experiments, the first connecting arm 33 is preferably swung within 120 degrees.

In order to enable the user to operate the fan device 20 more flexibly and to increase the degree of freedom of operation, as shown in fig. 19, 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, and 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 a second axis F, 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 apparatus 20, and the second connecting arm 34 is connected to the connecting holder 31.

The second connecting arm 34 can be directly connected to the connecting base 31 in a rotatable manner, 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: and a vibration damping element 36 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 connection 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 cushioning element 36, which changes its shape cushioning effect 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.

Referring to fig. 12, a backpack blower system 100 ' is shown, which includes a power supply built in the backpack device 10 ' and a cable 101 ' disposed outside the connection device 30 ' for supplying power to the blower device 20 '. More specifically, the backpack device 10 ' is provided with a device output interface 102 ', the fan device 20 ' is provided with a fan input interface 201 ', and two ends of the cable 101 ' can be respectively matched with the device output interface 102 ' and the fan input interface 201 ' to form electrical connection.

Of course, the cable 101 ' can also be fixedly connected to the harness 10 ' or the fan device 20 ' as part of them.

As shown in fig. 13, the backpack blower system 100 'has a backpack device 10' that can supply power to the blower device 20 'by combining with a battery pack 40', and the backpack device 10 'not only physically carries the battery pack 40' but also serves as a transfer station for the battery pack 40 'to supply power to the blower device 20'; of course, the battery pack 40 "may directly transmit power to the fan device 20" through the connection.

As shown in fig. 13, the piggyback equipment 10 "is provided with an equipment input interface 101", the equipment input interface 101 "is used for obtaining electric energy from the battery pack 40", the corresponding battery pack 40 "is provided with an interface capable of interfacing with the equipment input interface 101" and a corresponding connection terminal; the accessory input interface 101 'includes an accessory input terminal 101 a' which is used to connect with a connection terminal of the battery pack 40 ', and in general, since the battery pack connection terminal of the battery pack 40' is charged, the connection terminal of the battery pack 40 'is disposed in a housing or a recess thereof, so that the accessory input terminal 101 a' is exposed or can be inserted into the recess.

The backpack device 10 ' is further provided with a device output interface 102 ', and the backpack device 10 ' can output the electric power obtained from the battery pack 40 ' through the device output interface 102 '. The blower device 20 "may be directly connected to the circuit of the harness 10" through the cable 103 ", or may be provided with a blower input port 201" as shown in fig. 13, and both ends of the cable 103 "may form interfaces respectively adaptable to the equipment output interface 102" and the blower input interface 201 ".

As a further alternative, the fan device 20 "is further provided with an interface that can be directly adapted to the interface of the battery pack 40", and the interface of the battery pack 40 "can be adapted to the equipment input interface 101" of the backpack equipment 10 ", and can be directly coupled to the fan device 20". In the case of a design in which the connection device 30 ″ is detachable relative to the fan device 20 ″, the fan device 20 ″ with such an interface can be used separately from the harness 10 ″.

A similar approach may be used for the portion of backpack instrument 10 that is accessible to battery pack 40 in backpack blower system 100 as shown in fig. 1, 2, 14, 15 and 20, 21.

More specifically, as shown in fig. 15, 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. 14, a plurality of connection pieces 115 are provided at the projection 113a of the set-up joint 113, and when the battery pack 40 is inserted to the position shown in fig. 1, the connection pieces 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 if a certain control function is required to be implemented at the backpack equipment 10, the circuit board and corresponding electronic components may be provided therein such 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 cable 37 forming the electrical connection between the harness 10 and the fan device 20 in the backpack blower system 100 shown in fig. 1, 2, 14, 15 and 20, 21 is built into the connection device 30.

In the backpack blower system 100, the connection device 30 is detachable with respect to both the backpack 10 and the blower device 20, so it is possible to adopt a scheme similar to that shown in fig. 13, so that both the backpack 10 and the blower device 20 are formed with corresponding interfaces, the connection device 30 is provided with an interface capable of being docked with the backpack 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 connection device 30.

In addition, backpack blower system 300 as shown in figure 24 includes: 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. 25.

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.

In order to solve the problem of the exposed inner cable 303e at the rotary connection position of the first connection tube 303b and the second connection tube 303c, as shown in fig. 20 and 21, the second connection arm 34 is provided with a cavity for arranging the cable 37, one end of the second connection arm 33 is rotatably connected to form a half shell 341, the half shell 341 is opened upwards (upwards in fig. 20 and 21) and is provided with a connection column 341a, the first connection arm 33 forms a half shell 331 opened downwards and is provided with a part capable of being adapted to the bearing 38, and a relatively closed space is formed to protect the cable 37 when the

half shells

331 and 341 are butted up and down. The outer sleeve bearing 38 of the connecting column 341a is then fitted into the half shell 331 so as to form a rotary connection.

The piggyback tool system 400 as shown in fig. 22, 23 comprises: the backpack attachment 401, the tool device 402, the connection device 403 and the battery pack 404, which, in addition to the tool device 402, may also be implemented as the backpack attachment 10, the connection device 30 and the battery pack 40 of the backpack blower system 100 shown in fig. 1 and as further developments thereof described above.

The tool device 402 shown in fig. 22 and 23 is a pruning device, the functional components of which are a pruning blade 402a, a motor and a corresponding transmission structure accommodated in a tool housing 402b thereof for driving the pruning blade 402a to and fro, and the connecting device 403 is capable of transmitting a force between the tool device 402 and the carrying device 401, in particular a reaction force to the carrying device 401 via the connecting device 403 when the pruning blade 402a is subjected to the reaction force of the object on which it acts.

Specifically, the mass of the battery pack 404 in the backpack tool system 400 is 1Kg or more, if there are a plurality of battery packs 404, the sum of their masses is 1Kg or more, and the rated output voltage of the battery pack 404 is 18V 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, because the fan device has a higher requirement for flexibility during operation, the fan device is lighter in weight, the mass of the battery pack adapted to the fan device is often greater than 50% of the mass of the fan device, and for the fan device, when the fan device is used alone in combination with the battery pack, a user feels fatigue more easily, and when the fan device is used in combination with the battery pack, the user experience is better, and the working time can be increased.

Through experiments, when the battery pack 404 has a large mass or a large rated output voltage, the user can save physical strength and improve the efficiency of moving work in a backpack mode compared with a mode of directly combining the battery pack with a tool, which is very important for a cordless electric tool needing to move for work.

In addition, since the connection device 403 and the tool device 402 are detachable, the backpack tool system 400 may include more than two tool devices 402 with different functions, such as a blower device and a pruning device, or may be tool devices for performing other functions.

Specifically, a backpack tool system 600 as shown in fig. 27 may be used, which may employ the solution of the backpack blower system 400 as shown in fig. 22 and 23 and their extensions described above, except that the tool device 602 is a chain saw.

Alternatively, the backpack tool system 700 shown in fig. 28 may employ the version of the backpack blower system 400 shown in fig. 22 and 23 and their extensions described above, in addition to the tool device 702 being a power drill.

Alternatively, the tool arrangement of fig. 27 and 28 may be a lawn mower, a lawnmower, an electric circular saw, an angle grinder, a sander, a reciprocating saw, or the like.

As shown in fig. 26, the backpack tool system 500 includes a backpack 501, a connecting device 502, a battery pack 503, a first tool device 504, and a second tool device 505, wherein one of the connecting device 502 and the first tool device 504, the second tool device 505 can be selected to be connected to the connecting device 502 because the connecting device 502 can be detachably connected with the first tool device 504; both the first tool device 504 and the second tool device 505 may be powered by a battery pack 503 associated with the harness 501.

As an extension, the backpack tool system 500 has two connection devices 502 such that the first tool device 504 and the second tool device 505 are connected to the backpack 501 by the connection devices 502. In general, when operating different machines with two hands, the tool as the tool device should be a small tool capable of being operated with one hand, such as an electric drill, a sander, a lighting lamp, etc.

Also in the solution of fig. 26, it is possible for one user to operate the first tool device 504 with the harness 501 on his back and for another user to operate the second tool device 505, in which case the cable 506 connecting the second tool device 505 should be sufficiently long.

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:

tool means for user operation;

the bearing equipment is used for bearing the user on the back;

a connection device capable of transmitting an acting force between the tool device and the harness;

the battery pack is used for supplying power to the tool device, and the mass of the battery pack is more than or equal to 1 Kg;

wherein the content of the first and second substances,

the tool apparatus includes:

a fan;

the motor is used for driving the fan to rotate;

a tool housing for housing the motor;

and an air duct connected to the tool housing for directing the air flow generated by the air flow element; when the fan rotates, the connecting device transmits the reaction force of the air flow received by the fan to the bearing equipment;

the backpack apparatus includes:

the equipment body comprises a back plate, an equipment combining part and an equipment connecting part, wherein the equipment combining part and the equipment connecting part are formed behind the back plate, the back plate is contacted with the back of a user, the equipment combining part is detachably combined with the battery pack, and the equipment connecting part is connected with the connecting device;

the back plate is fixedly connected with the back plate and used for surrounding the body of a user;

the connecting device includes:

a connection seat detachably connected to the equipment connection part;

the tool device comprises a first connecting arm and a second connecting arm, wherein the second connecting arm is connected with the connecting seat and the first connecting arm, the second connecting arm is rotatably connected with the connecting seat, and the first connecting arm is rotatably connected with the second connecting arm to enable the tool device to be swept transversely and vertically.

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

the equipment coupling portion is located above the connection seat when the connection seat is connected to the equipment connection portion.

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

the equipment combining part guides the battery pack to be combined to the bearing equipment along a first direction;

the equipment connecting part guides the connecting seat to be connected to the bearing device along a second direction;

the first direction is perpendicular to the second direction.

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

the equipment coupling portion further includes:

the bearing table is used for supporting the weight of the battery pack;

the bearing platform is provided with:

the bearing table top is perpendicular to the back plate.

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

when the connecting seat is connected to the equipment connecting part, the bearing table surface is positioned above the connecting seat; when the connecting seat is connected to the equipment connecting part and the battery pack is combined to the equipment combining part, the battery pack and the connecting seat are respectively located on two sides of the bearing table board.

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

the equipment coupling portion further includes:

the bearing table is used for supporting the weight of the battery pack;

and the lock catch is used for locking the battery pack.

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

the lock catch is arranged above the bearing platform.

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

the bearing equipment is provided with:

and the ejecting device is used for ejecting the battery pack when the lock catch is unlocked.

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

the first connecting arm and the connecting seat form a rotary connection by taking a first axis as a shaft.

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

the second connecting arm and the first connecting arm form rotary connection with a second axis as a shaft.

11. The piggyback tool system of claim 10, wherein:

the first axis is perpendicular to the second axis.

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

be equipped with between first linking arm and the instrument device:

and the shock absorption element is used for absorbing the shock transmitted to the first connecting arm by the tool device.