CN112405444A

CN112405444A - Power head and garden tool applying same

Info

Publication number: CN112405444A
Application number: CN202011401018.4A
Authority: CN
Inventors: 李书华
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-02-26

Abstract

The invention provides a power head and a garden tool applying the power head, wherein the power head comprises a shell assembly, a power head body and a power head body, wherein the shell assembly is provided with a first cavity and a second cavity which is arranged along the vertical direction and has an upward opening; the motor assembly is arranged in the first cavity and comprises a motor, one end of an output shaft of the motor extends out of the shell assembly, and the output shaft of the motor is transversely arranged; and the battery pack assembly is vertically arranged in the second cavity. The power head integrates the motor assembly and the battery pack assembly to replace the traditional engine, reduces energy consumption, saves energy and protects environment.

Description

Power head and garden tool applying same

Technical Field

The invention relates to a power head and a garden tool applying the same.

Background

At present, horizontal shaft power heads used on most outdoor power equipment or garden tools are engine engines which have the defects of inconvenient operation, high noise, serious pollution and potential safety hazard in gasoline storage.

The lithium battery is the most widely used clean energy at present, and with the continuous improvement of the capacity of the lithium battery, the endurance time gradually exceeds the single fuel consumption time of a fuel engine, so that the lithium battery is applied to a power head or high-power outdoor power equipment driven by the lithium battery, a wheel type tool, a riding type tool or a vehicle, and the prospect is very good.

In view of the above, it is necessary to provide a power head driven by a lithium battery to solve the above problems.

Disclosure of Invention

The invention aims to provide a power head and a garden tool applying the power head.

In order to achieve the purpose, the invention provides a power head which is used for outputting power and comprises a shell assembly, a power head body and a power head cover, wherein the shell assembly is provided with a first cavity which is communicated with the shell assembly and a second cavity which is arranged along the vertical direction and has an upward opening; the motor assembly is arranged in the first cavity and comprises a motor, one end of an output shaft of the motor extends out of the shell assembly, and the output shaft of the motor is transversely arranged; and the battery pack assembly is vertically arranged in the second cavity.

As a further improvement of the invention, the tail end of the motor is provided with a first fan, and the shell assembly is provided with an air inlet and a first air outlet.

As a further improvement of the present invention, the motor is fixed in the housing assembly through a mounting plate, the mounting plate includes a bottom plate and a side plate connected to the bottom plate, one end of the motor is connected to the side plate, and the side plate is provided with a through hole for the output shaft of the motor to pass through.

As a further improvement of the present invention, the motor assembly further includes a second fan, and the second fan is disposed on the output shaft of the motor.

As a further improvement of the present invention, the housing assembly includes a front end cover provided with a center hole through which an output shaft of the motor passes, and the second fan is located between the front end cover and the side plate.

As a further improvement of the present invention, the front end cover is attached to the side plate to form a volute structure, the volute structure formed by attaching the front end cover to the side plate is provided with a second air outlet, and the second air outlet is connected to the first air outlet to guide the air flow to the first air outlet.

As a further improvement of the present invention, the motor assembly further includes a wind-collecting cover, the wind-collecting cover is disposed outside the motor, one end of the wind-collecting cover is connected to the side plate, and the first fan is disposed inside the wind-collecting cover.

As a further improvement of the present invention, an internal vent is provided on the side plate, and the airflow flowing through the inside of the motor flows into a space formed by the front end cover and the side plate through the internal vent.

As a further improvement of the present invention, an external vent is further disposed on the side plate, the external vent is located at the periphery of the internal vent, and the airflow flowing between the motor and the air collecting cover flows into a space formed by the front end cover and the side plate through the external vent.

As a further improvement of the present invention, the housing assembly includes a lower housing and an upper housing installed in cooperation with the lower housing, the air inlet is disposed on the lower housing, and the air inlet is open downward.

As a further improvement of the invention, the plane of the air inlet is different from the bottom end surface of the lower shell in the same plane.

As a further improvement of the present invention, the power head further includes a base, the base is connected to the bottom of the lower housing, and the bottom plate is clamped between the lower housing and the base.

As a further improvement of the invention, the lower shell is provided with a mounting part for connecting the lower shell and the base, and the mounting part is sunken towards the inner part of the lower shell.

As a further improvement of the present invention, the first air outlet is provided at the mounting portion of the lower case, and the first air outlet is open toward the side surface of the case assembly.

As a further improvement of the present invention, the housing assembly includes an upper housing, a lower housing, and a rear end cap, the upper housing and the lower housing are cooperatively mounted, the rear end cap is detachably connected to the upper housing and the lower housing, the motor assembly includes a first control board, the upper housing and/or the lower housing is provided with a support portion, and the first control board is clamped between the support portion and the rear end cap.

As a further improvement of the present invention, the bottom plate is provided with a first mounting hole, the base is provided with a second mounting hole, the second mounting hole is further provided with a first protruding portion protruding toward the bottom plate, and when the base is assembled with the lower housing, the first protruding portion penetrates through the first mounting hole and is inserted into the lower housing.

As a further improvement of the invention, the front end cover is provided with a second protruding part, and a bearing for the output shaft of the motor to pass through is sleeved in the second protruding part.

In order to achieve the purpose, the invention also provides a garden tool, which comprises a main machine body, a working assembly, a walking assembly and the power head arranged on the main machine body, wherein the power head is the power head.

As a further improvement of the invention, the garden tool is a snow sweeper.

The invention has the beneficial effects that: the power head integrates the motor assembly and the battery pack assembly to replace the traditional engine, reduces energy consumption, saves energy and protects environment.

Drawings

Fig. 1 is a schematic diagram of the structure of the power head of the present invention.

Fig. 2 is an exploded schematic view of the power head of the present invention.

Fig. 3 is a schematic structural view of a mounting plate of the power head of the present invention.

Fig. 4 is a schematic structural view of an upper housing of the power head of the present invention.

Fig. 5 is a schematic view of the bottom and base of the powerhead of the present invention.

Fig. 6 is a structural schematic view of the lower housing of the power head of the present invention.

Fig. 7 is a schematic diagram of the cross-sectional structure of the lower housing, mounting plate and base connection of the power head of the present invention.

Fig. 8 is a schematic structural view of the base mounting surface of the power head of the present invention.

Fig. 9 is a partial structural schematic diagram of the power head of the present invention.

FIG. 10 is a side sectional view of the powerhead of the present invention.

Fig. 11 is a bottom structural view of the lower housing of the power head of the present invention.

Figure 12 is a schematic airflow diagram of the powerhead of the present invention.

FIG. 13 is a schematic diagram of the construction of the motor assembly and mounting plate of the powerhead of the present invention.

Fig. 14 is a schematic view of the structure of fig. 13 with a front cover.

FIG. 15 is a schematic diagram of the front end cap of the powerhead of the present invention.

FIG. 16 is a schematic diagram of the construction of the first and second cavities of the powerhead of the present invention.

Fig. 17 is a schematic cross-sectional view of a power head according to the present invention.

Fig. 18 is a schematic view showing the construction of the gardening tool according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-17, the present invention discloses a powerhead 100. the powerhead 100 includes a housing assembly 1, a motor assembly 2, a battery pack assembly 3, and a base 4.

As shown in fig. 1 and 2, the housing assembly 1 is formed with an accommodating space for accommodating the motor assembly 2 and the battery pack assembly 3, the motor assembly 2 and the battery pack assembly 3 are both disposed in the housing assembly 1, and the base 4 is disposed at the bottom of the housing assembly 1. Specifically, the housing assembly 1 includes an upper housing 11 and a lower housing 12 which are installed in a matching manner, in this embodiment, the upper housing 11 and the lower housing 12 are detachably connected, the lower housing 12 is disposed on the base 4, a first cavity 111 is formed between the upper housing 11 and the lower housing 12, and the motor assembly 2 is disposed in the first cavity 111, and preferably, the first cavity 111 is disposed in a penetrating manner along a horizontal direction. The motor assembly 2 includes a motor 21, in this embodiment, the motor 21 is disposed transversely, that is, an output shaft 211 of the motor 21 is disposed transversely, the output shaft 211 of the motor 21 extends out of the housing assembly 1, and an extending direction of the output shaft 211 is parallel to a penetrating direction of the first cavity 111, so as to output power through the output shaft 211.

As shown in fig. 3, the motor 21 is fixedly installed in the first cavity 111 through an installation plate 26, preferably, the installation plate 26 of this embodiment is an "L" shaped metal plate, the installation plate 26 includes a bottom plate 261 and a side plate 262 vertically connected to the bottom plate 261, the installation plate 26 of this embodiment is preferably an integral structure, that is, the bottom plate 261 and the side plate 262 are integrally formed, but of course, the bottom plate 261 and the side plate 262 may also be two separate pieces, and the installation plate 26 is assembled by the two separate pieces. The side plate 262 is provided with a through hole 2621 for the output shaft 211 of the motor 21 to pass through, and the side plate 262 is located in the first cavity 111, and the end of the motor 21 provided with the output shaft 211 is connected with the side plate 262 for installation. In order to more reliably mount the motor 21, the motor assembly 2 of the present embodiment is further provided with a fixing bracket 25, and one end of the motor 21 away from the output shaft 211 is fixedly mounted by the fixing bracket 25.

As shown in fig. 3 and 4, it should be noted that, in order to enhance the strength of the mounting plate 26, a reinforcing rib 263 is further welded to one end of the side plate 262 near the bottom plate 261, so as to better support the side plate 262, so that the side plate 262 can better bear the pulling force of the motor 21. In addition, the upper shell 11 of the present embodiment is provided with the rib plate 114, and the upper end of the side plate 262 is clamped and fixed by the rib plate 114 on the upper shell 11, so that the mounting plate 26 is fixed more reliably.

As shown in fig. 5, the bottom plate 261 of the mounting plate 26 is sandwiched between the lower case 12 and the base 4, the base 4 is provided with a mounting plane contacting with the bottom plate 261, preferably, the mounting plane is recessed toward the inside of the base 4 at a position corresponding to the bottom plate 261, and after the bottom plate 261 is placed on the base 4, the upper end surface of the bottom plate 261 is flush with the mounting plane of the base 4, so that the bottom plate 261 does not interfere with the lower case 12 and the base 4 when sandwiched between the lower case 12 and the base 4. The lower case 12 is provided with a notch 121 through which the side plate 262 passes, and the side plate 262 enters the first cavity 111 through the notch 121.

As shown in fig. 5 to 7, in order to ensure that the mounting plate 26 can reliably mount and fix the motor 21, the mounting plate 26 of this embodiment is preferably made of a metal material, and the upper housing 11, the lower housing 12, and the base 4 of this embodiment are preferably made of a plastic material, so that the power head 100 is prevented from being electrified from the outside, and the safety is high. Of course, in other embodiments, the upper housing 11, the lower housing 12, and the base 4 may be made of other insulating materials. In the present embodiment, a plurality of first mounting holes 2611 are disposed on the bottom plate 261, a second mounting hole 41 is disposed on the base 4 at a position corresponding to the first mounting hole 2611, meanwhile, a plurality of mounting portions 124 recessed toward the inside of the lower housing 12 are disposed at positions corresponding to the first mounting holes 2611 on two opposite sides of the lower housing 12, and a third mounting hole 125 is also disposed on the mounting portions 124, so that, during assembly, the lower housing 12, the mounting plate 26, and the base 4 can be connected together through the first mounting holes 2611, the second mounting holes 41, and the third mounting holes 125 by using bolts 44, nuts 45, and the like, and the entire power head 100 can be connected to an external device through the mounting holes, for example, the entire power head 100 can be connected to a garden tool to drive the garden tool to work. It should be noted that, in the present embodiment, after the power head 100 is mounted on an external device, such as a garden tool, the output shaft 211 of the motor 21 extends in a horizontal direction, and the output shaft 211 is preferably parallel to the mounting plane of the power head 100 and the garden tool.

As shown in fig. 8, in the present embodiment, the second mounting hole 41 of the base 4 is further provided with a first protruding portion 42 protruding toward the bottom plate 261, the first protruding portion 42 is preferably of a ring structure for passing a bolt 44 and the like, and the first protruding portion 42 is preferably integrally formed with the base 4, i.e. the first protruding portion 42 is also made of a plastic material. In the present embodiment, the first protrusion 42 is inserted into the lower case 12 through the first mounting hole 2611, and after the first protrusion 41 is inserted into the lower case 12, the first protrusion 41 surrounds the third mounting hole 125, and when the bolt 44 or the like is used for assembly, the bolt 44 is inserted through the second mounting hole 41 and the first protrusion 42, the first mounting hole 2611, and the third mounting hole 125 in this order.

Because the first protruding part 42 is provided and the first protruding part 42 is inserted into the lower housing 12, when the lower housing 12 is connected to the base 4, the first protruding part 42 can form a seam allowance structure, so as to generate a certain creepage distance, and prevent the electric charge on the motor 21 from being transferred to the bolt 44 through the mounting plate 26, and further prevent the electric charge from being transferred to the external device connected to the power head 100. The structure setting of this embodiment makes the insulating effect of unit head 100 better, and the security is higher, adopts the structure setting of this embodiment, and motor 21 only need do basic insulation, can guarantee the insulating requirement of each mounting hole department of unit head 100.

As shown in fig. 9, the housing assembly 1 of the present embodiment further includes a front cover 13 and a rear cover 14, the first cavity 111 is enclosed by the upper housing 11, the lower housing 12, the front cover 13 and the rear cover 14, and the front cover 13 and the rear cover 14 are disposed on two opposite sides of the housing assembly 1. The rear end cap 14 is arranged on the side facing away from the output shaft 211 of the electric motor 21 to close the opening of the housing assembly 1 there. The motor assembly 2 of the power head 100 of the present embodiment is further provided with a first control board 24, and the first control board 24 is connected to the battery pack assembly 3 and the motor 21 for control.

The upper shell 11 and the lower shell 12 are both provided with a supporting portion 113, the first control board 24 is clamped between the supporting portion 113 and the rear end cover 14, when the first control board 24 is installed, the first control board 24 is directly placed at the supporting portion 113, then the rear end cover 14 is installed with the upper shell 11 and the lower shell 12, and at this time, the first control board 24 is pressed on the supporting portion 113. The first control panel 24 of the embodiment is simple and convenient to assemble and disassemble, convenient to maintain and replace quickly and convenient to operate.

In addition, the motor 21 of the present embodiment is connected with a power cord 29, the power cord 29 is extended from the inside of the housing assembly 1 to the outside of the housing assembly 1, an avoiding groove 126 for avoiding the power cord 29 is provided on the side of the lower housing 12 facing the rear end cover 29 of the present embodiment, the avoiding groove 126 is located at a lower position of the first control plate 24, and the power cord 29 is extended from a gap between the lower end surface of the first control plate 24 and the lower housing 12 and extended to the outside of the housing assembly 1 through the avoiding groove 126. The first control board 24 can position the power lines 29 to a certain degree, and the power lines 29 can be arranged more orderly.

As shown in fig. 10, the front end cap 13 of the present embodiment is provided with an insulating plug 136 to avoid the risk of exposing a screw for fixing the front end cap 13, thereby further improving the insulation of the power head 100.

The front end cover 13 is provided with a center hole 131 through which an output shaft 211 of the motor 21 penetrates, a second protruding portion 132 extending towards the rear end cover 14 is arranged at the position of the center hole 131 on the front end cover 28, a bearing 135 is sleeved in the second protruding portion 132, the output shaft 211 of the motor 21 penetrates through an inner ring of the bearing 135, the bearing 135 and the front end bearing inside the motor 21 can form a double-bearing structure, when the motor 21 is started or works in overload, and the output shaft 211 of the motor is subjected to variable-load lateral tension, the damage of the lateral tension to the inner bearing of the motor 21 can be effectively reduced, the service life of the inner bearing of the motor 21 is prolonged, and the problem that the inner bearing of the motor 21 is frequently damaged for a long time is solved.

As shown in fig. 11, the first fan 22 is disposed at the tail end of the motor 21 in this embodiment, where the tail end of the motor 21 refers to an end of the motor 21 away from the output shaft 211, and the first control board 24 is disposed between the first fan 22 and the rear end cover 14. Be equipped with air intake 122 and first air outlet 123 on the casing subassembly 1, during motor 21 operation, drive first fan 22 and rotate for during the air current inhales casing subassembly 1 from air intake 122, dispel the heat to the part in the casing subassembly 1, then the air current flows out casing subassembly 1 from first air outlet 123.

Specifically, the air inlet 122 is disposed on the lower housing 12, the air inlet 122 is open downward, the air inlet 122 has a certain distance from the bottom end surface of the lower housing 12, a plane where the air inlet 122 is located and the bottom end surface of the lower housing 12 are not in the same plane, and a fall space is formed between the air inlet 122 and the bottom end surface of the lower housing 12, so as to effectively block the invasion of external water vapor or dust. To increase the amount of air intake for better heat dissipation, two air inlets 122 are provided, and two air inlets 122 are provided on the side of the lower casing 12 close to the rear end cover 14.

More preferably, two air intakes 122 are located between the primary control panel 24 and the rear end cap 14. In this embodiment, the first air outlet 123 is also disposed on the lower housing 12, the first air outlet 123 of this embodiment is disposed at the position of the mounting portion 124 and is communicated with the mounting portion 124, the first air outlet 123 exhausts the air in the housing assembly 1 through the mounting portion 124, and the air outlet direction of the first air outlet 123 is preferably spatially perpendicular to the air inlet direction of the air inlet 122. The first air outlet 123 is designed to be hidden, so that water vapor and the like can be prevented from entering the housing assembly 1 from the position.

As shown in fig. 12 to 15, the motor assembly 2 of the present embodiment further includes a second fan 27 disposed on the output shaft 211 of the motor 21, the second fan 27 is located near the first air outlet 123, and the second fan 27 is disposed between the side plate 262 and the front cover 13, the motor 21 rotates to synchronously drive the first fan 22 and the second fan 27 to rotate, after the first fan 22 rotates to make the air flow enter the housing assembly 1, the air flow flows through the side plate 262 and toward the first air outlet 123 under the action of the second fan 27. This embodiment adopts the structure of double fan, can make the air current flow more smoothly, quick, is favorable to improving the radiating effect.

In addition, the motor assembly 2 of the present embodiment further includes a wind-collecting cover 23 disposed outside the motor 21, one end of the wind-collecting cover 23 is fixed to the side plate 262, and the first fan 22 is covered inside the wind-collecting cover 23. The wind-collecting cover 23 may be made of a metal material to enhance heat dissipation. The air collecting cover 23 can collect the air flow entering the housing assembly 1, so that the air flow can better dissipate the heat of the motor 21. After the airflow enters the wind-collecting cover 23, part of the airflow flows through the inside of the motor 21 to dissipate heat of the internal structure of the motor 21, and part of the airflow which does not enter the inside of the motor 21 flows through a gap between the motor 21 and the wind-collecting cover 23 to further dissipate heat of the motor 21, so that the cooling effect of the motor 21 is improved.

An inner vent 2623 is arranged on the side plate 262 corresponding to the motor 21, the air flow passing through the inside of the motor 21 can flow toward the first air outlet 123 through the inner vent 2623, meanwhile, an outer vent 2622 is further formed at the position of the side plate 262 corresponding to the gap between the motor 21 and the air collecting cover 23, the outer vent 2622 is located at the periphery of the inner vent, and the air flow passing through the gap between the motor 21 and the air collecting cover 23 can flow toward the first air outlet 123 through the outer vent 2622. The outer vent 2622 is disposed on the outer periphery of the contacting portion of the motor 21 and the side plate 262 on the side plate 262 and is located in the inner space of the connecting portion of the air collecting cover 25 and the side plate 262, preferably, the outer vent 2622 is disposed around the outer periphery of the motor 21 on the side plate 262, that is, the outer vent 2622 surrounds the outer periphery of the inner vent 2623, and the air flowing outside the motor 21 flows from the outer vent 2622 toward the first air outlet 123.

In the present embodiment, one side of the front cover 13 is attached to the side plate 262, and preferably, the front cover 13 and the side plate 262 are combined to form a volute structure, the volute structure is provided with the second air outlet 133, the second air outlet 133 is communicated with the first air outlet 123, and the air outlet direction is the same as the air outlet direction, so that the air flow entering between the front cover 13 and the side plate 262 is guided to the first air outlet 123 through the second air outlet 133. Specifically, the space between the front end cover 13 and the side plate 262 forms an air duct for air flow, that is, the air duct for air flow is formed in the volute-shaped structure, the second air outlet 133 is located at the tail end of the air duct, the second air outlet 133 is located at the bottom of the front end cover 13, and the air outlet direction defined by the second air outlet 133 is the same as the air outlet direction defined by the first air outlet 123. The second fan 27 is located between the front cover 13 and the side plate 262, that is, the second fan 27 is located inside the volute structure, and when the second fan 27 rotates, the airflow located between the front cover 13 and the side plate 262 can be thrown out from the second air outlet 133. The front end cover 13 and the side plate 262 are skillfully combined to form a volute structure, so that the airflow flows more rapidly and smoothly, and the design is exquisite.

When the motor 21 is started, the first fan 22 rotates, so that the external air of the housing assembly 1 is sucked into the housing assembly 1 through the air inlet 122, because the first control board 24 is located between the first fan 22 and the rear end cover 14, the air entering the housing assembly 1 firstly flows through the first control board 24 to dissipate heat of the first control board 24, secondly, the air is sucked into the air collecting hood 23 under the action of the first fan 22 to sufficiently dissipate heat of the motor 21, and then the part of the air flows enters the area between the front end cover 13 and the side plate 262 through the internal vent 2623 and the external vent 2622 of the side plate 262 under the action of the second fan 27, and finally flows to the first air outlet 123 of the lower housing 12 through the second air outlet 133 of the front end cover 13 to be discharged under the action of the second fan 27. The power head 100 of the embodiment can smoothly and quickly dissipate heat of the first control board 24 and the motor 21, and has smooth airflow and good heat dissipation effect.

As shown in fig. 16 and 17, the battery pack assembly 3 of the present embodiment is vertically disposed in the housing assembly 1, the housing assembly 1 of the present embodiment is further provided with a second cavity 112 for accommodating the battery pack assembly 3, preferably, the second cavity 112 is disposed on the upper housing 11, the second cavity 112 is preferably disposed along a vertical direction and has an upward opening, the battery pack assembly 3 includes at least one battery pack 31, and the battery packs 31 can be connected in series and in parallel, and in the present embodiment, when a plurality of battery packs 31 are disposed, a separation plate can be disposed between the battery packs 31 for installation. A button assembly 311 is provided in the second cavity 112 for fixing/releasing the battery pack 31. After the battery pack 31 is placed in the second cavity 112, the inserting and pulling direction of the battery pack 31 is preferably perpendicular to the axis of the output shaft 211 of the motor 21, and the battery pack 31 is located beside the motor 21, i.e. the battery pack 31 is located in the vertical direction and the battery pack 31 is located at the side position of the motor 21.

So set up, when casing 11 was gone up in the manufacturing, only need about the die sinking can, make it convenient to go up casing 11 die sinking, production manufacturing cost has been reduced, and, place battery package 31 vertically and facilitated the plug of battery package 31, and make battery package 31 more reliably fixed in last casing 11 under the effect of self gravity, in addition, place battery package 31 the side that makes whole unit head 100's overall structure and current engine's overall structure be very close at motor 21, make the unit head 100 of this embodiment can directly replace current engine, in use, directly install the unit head 100 of this embodiment on corresponding peripheral equipment can, can not take place to interfere with other parts of current peripheral equipment, need not change current peripheral equipment, high durability and convenient use.

The second cavity 112 also has a switch 312 along its edge, and a key hole 313, wherein the key hole 313 is used to insert a key 314 to turn on the battery pack 3, and the switch 312 is used to activate the powerhead 100.

As shown in fig. 17, in order to improve the dust-proof and water-proof effects, a battery cover 32 is rotatably connected to the second cavity 112 of the present embodiment, so that when the battery pack 31 is replaced or assembled, the battery cover 32 can be opened, and at other times, the battery cover 32 can be closed.

The power head 100 of the present embodiment further includes a second control board 28, the second control board 28 is also disposed in the housing assembly 1, preferably, the second control board 28 is fixed on the upper housing 11 by means of snap-fit or screw-fixation, and the second control board 28 is located on the upper side of the motor 21. The second control plate 28 of the present embodiment can be disposed in contact with the wind-collecting cover 23 for passive heat dissipation.

The base 4 of this embodiment is provided with the water leakage hole 43, and the one side that the base 4 contacts with the external equipment is provided with the boss (not shown), so, when the unit head 100 is installed with the external equipment, the boss can make and form certain space between the mounting plane of unit head 100 and external equipment, the water that enters into in the casing subassembly 1 just can flow out from between the mounting plane of unit head 100 and external equipment through the water leakage hole 43, and the boss can reduce the area of contact of base 4 and external equipment mounting plane, and then reduce the transmission of vibrations.

In addition, the base 4 of the present embodiment is further provided with a threading hole for threading out a connection line, a data line, etc. in the power head 100, so as to connect with an external device. The threading hole is formed in the base 4, after the power head 100 is installed on external equipment, connecting wires and the like can directly enter the external equipment from an installation plane of the external equipment, which is in contact with the power head 100, and large areas of the connecting wires and the like can be prevented from being exposed outside.

When the power head 100 of this embodiment is assembled, the mounting plate 26 may be firstly sleeved into the lower housing 12, then the motor 21 and the wind-gathering cover 23 are fixed on the mounting plate 26, then the fixing bracket 25 is fixed, then the lower housing 12 connected with the mounting plate 26 is connected with the base 4, and after the assembly of the parts is completed, the second control board 28 is installed on the upper housing 11; in addition, install second fan 27 on the output shaft 211 of motor 21 to along motor 21 axial dress front end housing 13, then place first control panel 24 in supporting part 113 department, then from last to down adorn upper housing 11, adorn rear end housing 14 at last can, whole unit head 100 assembly order is simple clear, has made things convenient for subsequent assembly, can greatly improve subsequent assembly efficiency.

The power head 100 of the present embodiment may be applied to various garden tools to provide a driving force for the garden tools.

As shown in fig. 18, the present invention also discloses a garden tool 200, wherein the garden tool 200 comprises a main body 203, a working assembly 201, a walking assembly 202 and a power head 100, the power head 100 is mounted on the main body 203 to provide a driving force for the working assembly 201, the power head 100 can be integrally detached from the garden tool 200 for maintenance, replacement, etc., and is very convenient to use. In this embodiment, the garden tool 200 may be a snow blower, and the powerhead 100 is mounted on the snow blower to drive the snow blower to sweep snow. Of course, the garden tool 200 may be a ripper or other type of garden tool, and is not limited herein.

In summary, the power head 100 of the present invention integrates the motor assembly 2 and the battery pack assembly 3 to replace the conventional engine, so as to reduce energy consumption, save energy and protect environment, and meanwhile, the power head 100 of the present invention has the advantages of simple structure, convenient assembly and good heat dissipation effect.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims

1. A power head for outputting power, characterized in that: comprises that

The shell assembly is provided with a first cavity and a second cavity which is arranged along the vertical direction and has an upward opening;

the motor assembly is arranged in the first cavity and comprises a motor, one end of an output shaft of the motor extends out of the shell assembly, and the output shaft of the motor is transversely arranged; and

a battery pack assembly vertically disposed in the second cavity.

2. The powerhead of claim 1, wherein: the tail end of motor is equipped with first fan, be equipped with air intake and first air outlet on the casing subassembly.

3. The powerhead of claim 2, wherein: the motor passes through the mounting panel to be fixed in the casing subassembly, the mounting panel include the bottom plate and with the curb plate that the bottom plate is connected, motor one end with the curb plate is connected, the curb plate is equipped with the confession the through-hole that the output shaft of motor passed.

4. The powerhead of claim 3, wherein: the motor assembly further comprises a second fan, and the second fan is arranged on an output shaft of the motor.

5. The powerhead of claim 4, wherein: the shell assembly comprises a front end cover, the front end cover is provided with a center hole for an output shaft of the motor to penetrate through, and the second fan is located between the front end cover and the side plate.

6. The powerhead of claim 5, wherein: the front end cover is attached to the side plate to form a volute-shaped structure, a second air outlet is formed in the volute-shaped structure formed by attaching the front end cover to the side plate, and the second air outlet is connected to the first air outlet to guide air flow to the first air outlet.

7. The powerhead of claim 5, wherein: the motor assembly further comprises a wind-gathering cover, the wind-gathering cover is arranged outside the motor, one end of the wind-gathering cover is connected with the side plate, and the first fan is arranged inside the wind-gathering cover.

8. The powerhead of claim 7, wherein: the side plate is provided with an internal vent, and air flow flowing through the motor flows into a space formed by the front end cover and the side plate through the internal vent.

9. The powerhead of claim 8, wherein: an external vent is further arranged on the side plate and located on the periphery of the internal vent, and airflow flowing between the motor and the air collecting cover flows into a space formed by the front end cover and the side plate through the external vent.

10. The powerhead of claim 3, wherein: the shell assembly comprises a lower shell and an upper shell which is matched with the lower shell, the air inlet is formed in the lower shell, and the air inlet is opened downwards.

11. The powerhead of claim 10, wherein: the plane of the air inlet is not in the same plane with the bottom end face of the lower shell.

12. The powerhead of claim 10, wherein: the power head further comprises a base, the base is connected to the bottom of the lower shell, and the bottom plate is clamped between the lower shell and the base.

13. The powerhead of claim 12, wherein: be equipped with on the casing down and be used for connecting the casing down with the installation department of base, the installation department is sunken towards the internal portion of casing down.

14. The powerhead of claim 13, wherein: the first air outlet is arranged at the mounting part of the lower shell, and the first air outlet faces the side face of the shell component and is open.

15. The powerhead of claim 1, wherein: the motor assembly comprises a motor assembly and a shell assembly, wherein the motor assembly comprises a support part and a first control plate, the support part is arranged on the shell assembly, the shell assembly comprises an upper shell, a lower shell and a rear end cover, the upper shell is matched with the lower shell for installation, the rear end cover is detachably connected with the upper shell and the lower shell, the motor assembly comprises the first control plate, the upper shell and/or the lower shell is provided with the support part, and the first control plate is clamped between the support part and the rear end.

16. The powerhead of claim 12, wherein: the bottom plate is equipped with first mounting hole, be equipped with the second mounting hole on the base, second mounting hole department still is provided with the orientation the bellied first bellying of bottom plate, the base with during casing assembly down, first bellying passes first mounting hole inserts in the casing down.

17. The powerhead of claim 5, wherein: the front end cover is provided with a second protruding portion, and a bearing for the output shaft of the motor to penetrate through is sleeved in the second protruding portion.

18. The utility model provides a garden instrument, includes the host computer body, work subassembly, walking subassembly and installs unit head on the host computer body, its characterized in that: the powerhead according to any one of claims 1 to 17.

19. The gardening tool according to claim 18, wherein: the garden tool is a snow sweeper.