CN105818111A - Electric tool and electric tool system - Google Patents

Electric tool and electric tool system Download PDF

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Publication number
CN105818111A
CN105818111A CN201610045520.3A CN201610045520A CN105818111A CN 105818111 A CN105818111 A CN 105818111A CN 201610045520 A CN201610045520 A CN 201610045520A CN 105818111 A CN105818111 A CN 105818111A
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CN
China
Prior art keywords
tool
power set
motor
tool body
energy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610045520.3A
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Chinese (zh)
Inventor
王家达
查霞红
刘芳世
赵凤丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Positec Power Tools Suzhou Co Ltd
Original Assignee
Positec Power Tools Suzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Positec Power Tools Suzhou Co Ltd filed Critical Positec Power Tools Suzhou Co Ltd
Publication of CN105818111A publication Critical patent/CN105818111A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F3/00Associations of tools for different working operations with one portable power-drive means; Adapters therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F1/00Combination or multi-purpose hand tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02Construction of casings, bodies or handles

Abstract

The invention relates to an electric tool. The electric tool comprises a tool main body and a power device. The power device provides power for the tool main body. The tool main body comprises a tool shell and a working part. The power device comprises a main shell, a motor and an energy providing unit. The main shell can be detachably installed on the tool shell. When the main shell is installed on the tool shell, the working part can be driven by the motor. The electric tool further comprises a starting switch. When the tool shell is separated from the main shell, if the starting switch is closed, a closed loop cannot be formed between the motor and the energy providing unit. The invention further relates to an electric tool system. The power device of the electric tool cannot be independently started to work, so that the safety of the power device is improved.

Description

Electric tool and electric tool system
Technical field
The invention still further relates to a kind of electric tool.
The invention still further relates to a kind of electric tool system, especially one and include at least two tool body, and the electric tool system that at least two tool body provides the power set of power can be respectively.
Background technology
Traditional electric tool includes workpiece, motor, drive mechanism, activate switch, control circuit, energy provides unit etc., Guan Bi activate switch, energy provides the loop between unit and motor to connect, and control circuit controls motor and starts to rotate, the rotation of motor is passed to workpiece by drive mechanism, performs corresponding work.Wherein, when energy provides unit to be battery bag, battery bag is removably connected with electric tool.
Traditional electric tool there is problems of, and each electric tool is both needed to arrange motor, energy provides the module such as unit, control circuit.When a user buys the different electric tool of N kind, its cost paid is equivalent to N number of motor, N number of control circuit, and N number of energy provides unit, the summation of the cost of N number of workpiece.But under normal circumstances, user the most only uses a kind of electric tool so that other N-1 kind electric tools leave unused, i.e. other N-1 motor, N-1 control circuit, N-1 energy provides unit to be in idle state.
Based on this, relevant manufacturers devises a kind of electric tool, and this electric tool has dismountable and can provide power for the tool body of different electric tools power set, thus improves motor, and control circuit etc., energy provides the utilization rate of unit universal component.But it is integrated with motor due to these power set simultaneously and energy provides unit, if operator's improper use, power set can be caused not yet to be installed to tool body and i.e. start work, cause the injury to operator so that the security performance of electric tool is low.For that purpose it is necessary to a kind of electric tool of exploitation, it has the power set that security performance is higher.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of electric tool, and this electric tool has can provide power and the power set of operation safety for the tool body of different electric tools.
In order to solve above-mentioned technical problem, technical scheme is as follows: a kind of electric tool, including tool body and power set, described power set provide power for tool body, described tool body includes, tool housing, and the workpiece supported by described tool housing;Described power set include, main casing, and supported by described main casing motor, for motor provide energy energy provide unit;Described power set can be detachably connected with described tool body, and when described power set are connected with described tool body, described workpiece can be driven by described motor;Described electric tool still further comprises activate switch, when described power set separate with described tool body, close described activate switch, described motor and described energy provide cannot form closed-loop path between unit, when described power set are connected with described tool body, close described activate switch, described motor and described energy and formation closed-loop path between unit is provided.
In order to solve above-mentioned technical problem, technical scheme is as follows: a kind of electric tool system, including power set and at least two tool body, described power set provide power for described at least two tool body, tool body includes each of in described at least two tool body, tool housing, and the workpiece supported by described tool housing;Described power set include, main casing, and supported by described main casing motor, for motor provide energy energy provide unit;Described power set can be detachably connected with described tool body, and when described power set are connected with described tool body, described workpiece can be driven by described motor;Described electric tool system still further comprises activate switch, when described power set separate with described tool body, close described activate switch, described motor and described energy provide cannot form closed-loop path between unit, when described power set are connected with described tool body, close described activate switch, described motor and described energy and formation closed-loop path between unit is provided.
In order to solve above-mentioned technical problem, technical scheme is as follows: a kind of electric tool, including tool body and power set, described power set provide power for tool body, described tool body includes, tool housing, and the workpiece supported by described tool housing;Described power set include, main casing, and supported by described main casing motor, for motor provide energy energy provide unit;Described main casing removably can be installed with described tool housing, and when described main casing is installed on described tool housing, described workpiece can be driven by described motor;Described electric tool still further comprises activate switch, when described tool housing separates with described main casing, close described activate switch, described motor and described energy provide cannot form closed-loop path between unit, when described main casing is installed on described tool housing, close described activate switch, described motor and described energy and formation closed-loop path between unit is provided.
Preferably, described activate switch is arranged on described tool housing.
Preferably, described activate switch is arranged on described main casing.
Preferably, described energy provides unit to be battery bag.
Preferably, described battery bag removably can be installed with described main casing.
Preferably, described power set still further comprise control circuit, and described control circuit controls the rotary motion of motor.
The present invention provides a kind of electric tool system, including power set and at least two tool body, described power set provide power for described at least two tool body, tool body includes each of in described at least two tool body, tool housing, and the workpiece supported by described tool housing;Described power set include, main casing, and supported by described main casing motor, for motor provide energy energy provide unit;Described main casing removably can be installed with described tool housing, and when described main casing is installed on described tool housing, described workpiece can be driven by described motor;Described electric tool system still further comprises activate switch, when described tool housing separates with described main casing, close described activate switch, described motor and described energy provide cannot form closed-loop path between unit, when described main casing is installed on described tool housing, close described activate switch, described motor and described energy and formation closed-loop path between unit is provided.
Preferably, described activate switch is arranged on described tool housing.
Preferably, described activate switch is arranged on described main casing.
Accompanying drawing explanation
Fig. 1 is the structure chart of the electric tool system of a better embodiment;
Fig. 2 is the structural representation of the better embodiment of power set first shown in Fig. 1;
Fig. 3 is the structural representation of the better embodiment of power set second shown in Fig. 1;
Fig. 4 is the structural representation of the better embodiment of power set the 3rd shown in Fig. 1;
Fig. 5 is the structural representation of the better embodiment of power set the 4th shown in Fig. 1;
Fig. 6 is the schematic diagram of the first better embodiment of the type of the main body of power set identification facility shown in Fig. 4;
Fig. 7 is the schematic diagram of the second better embodiment of the type of the main body of power set identification facility shown in Fig. 4;
Fig. 8 is the schematic diagram of power set shown in Fig. 1 and the first better embodiment of the electric connection of tool body;
Fig. 9 is the schematic diagram of power set shown in Fig. 1 and the second better embodiment of the electric connection of tool body;
Figure 10 is the schematic diagram of power set shown in Fig. 1 and a better embodiment of the attachment structure of tool body;
Figure 11 is that power set shown in Figure 10 are in the schematic diagram during installation with tool body;
Figure 12 is the schematic diagram that power set shown in Figure 10 install with tool body;
Figure 13 is the schematic diagram of power set shown in Fig. 1 and the 4th better embodiment of the electric connection of tool body;
Figure 14 is the schematic diagram of power set shown in Fig. 1 and another better embodiment of the attachment structure of tool body;
Figure 15 is the schematic diagram that power set shown in Figure 14 install with tool body;
Figure 16 is the structure chart of the electric tool system of a better embodiment.
100 power set 122 second abutment faces
102 main casing 124 lugs
1022 resettlement section 124 ' convexes
104 motor 126 guide rails
106 output shaft 128 external splines
108 recognition units 130 bear structure
1080 process circuit 132 flexible apparatus
1082 first Hall element 300 blower tool bodies
1084 second Hall element 301,401,501,601 gripping handles
1086 the 3rd Hall element 302,402,502,602 tool housings
1088 the 4th Hall element 304,404,504,604 workpieces
110 control circuit 306,406,506,606 tool interfaces
1101 controller 306 power shafts
1102 switch element 308,115 activate switches
112 energy provide unit 310 Magnet
1121 the 3rd housing 312 primary nodal points
114 by 314 secondary nodal points that compress switch
116 the 3rd node 316 first installation portions
118 fourth node 318 first abutment faces
120 second installation portion 320 buckles
320 ' projection 326 internal splines
322 button 400 grass-mowing machine tool bodies
322 ' knob 500 chain saw tool bodies
324 gathering sill 600 shrub and hedge trimmer tool bodies
Detailed description of the invention
Detailed description for the present invention and technology contents, coordinate accompanying drawing to be described as follows, but appended accompanying drawing only provides reference and explanation, is not used for being any limitation as the present invention.
It is illustrated in figure 1 the structural representation of the electric tool system of a better embodiment.Electric tool system includes power set 100 and the tool body of at least two electric tool, and wherein the tool body with this at least two electric tool removably installed by power set 100, and the tool body for this at least two electric tool provides power.In present embodiment, the tool body that electric tool system comprises has four kinds, respectively blower tool body 300, grass-mowing machine tool body 400, chain saw tool body 500, shrub and hedge trimmer tool body 600.Four kinds of tool bodies are provided with the identical interface installing power set 100.Above-mentioned tool body can also be the hand-push electrical tool bodies such as hay mover tool body.The dismountable installation of power set 100 and these four kinds of tool bodies, and provide power for these four kinds of tool bodies.When any one during power set 100 are installed on these four kinds of tool bodies, i.e. one complete electric tool of composition, perform the work that the electric tool of this type performs.
For realizing different tool body energy shared power units 100, the highest input power needed for the peak power output of power set 100 and all tool bodies that can install power set 100 matches;The highest input speed needed for the maximum output speed of power set 100 and all tool bodies that can install power set 100 matches.Illustrate, if the highest input power needed for all tool bodies that can install power set 100 is 1000w, minimum input power needed for all tool bodies that can install power set 100 is 100w, then the output that power set 100 are provided that necessarily be greater than 1000w.The generally rated power of chain saw and hay mover is higher, for about 1500w.The rated power of grass-mowing machine is relatively low, for about 300w.Type according to tool body is different, and its rated output power is different, such as 2500w, 1000w, 500w etc..For general above-mentioned blower tool body 300, grass-mowing machine tool body 400, chain saw tool body 500, shrub and hedge trimmer tool body 600, the common power tool body of garden class such as hay mover main body, the rated output power of power set 100 is about 2500w.When only above-mentioned Some tools main body is general for power set 100, its rated output power can be 300w or 500w or 1000w or 1500w or 2000w or 200w.
When these power set 100 are installed on the tool body that required input power is only 100w, the power designs of power set 100 is excessive, causes unnecessary waste.If the highest input speed needed for all tool bodies that can install power set 100 is 20000 revs/min, minimum input speed needed for all tool bodies that can install power set 100 is 1000 revs/min, then the output speed that power set 100 are provided that necessarily be greater than 20000 revs/min.When these power set 100 are installed on the tool body that required input rotating speed is only 1000 revs/min, the Design of Rotation of power set 100 is too high, causes unnecessary waste.The shared effect most economical between different tool bodies for reaching power set 100, it is preferred that the highest input power needed for the different types of tool body that electric tool system comprises is similar;As between 500w to 1000w.Preferably, the highest input speed needed for the different types of tool body that electric tool system comprises is similar.
As it is shown in figure 1, blower tool body 300 includes tool housing 302, and the workpiece 304 that supported by tool housing 302 and gripping handle 301.Grass-mowing machine tool body 400 includes tool housing 402, and the workpiece 404 that supported by tool housing 402 and gripping handle 401.Chain saw tool body 500 includes tool housing 502, and the workpiece 504 that supported by tool housing 502 and gripping handle 501.Shrub and hedge trimmer tool body 600 includes tool housing 602, and the workpiece 604 that supported by tool housing 602 and gripping handle 601.Workpiece 304 (404,504,604) receives the power of power set 100 transmission, and is translated into the power output matched with tool body.Gripping handle 301 (401,501,601) is for when electric tool works, i.e. power set 100 provide power for tool body, and when workpiece 304 (404,504,604) has output, operator grip.Gripping handle 301 (401,501,601) is arranged on tool body so that can be the gripping handle 301 (401,501,601) of the differently configured type of different types of tool body.It will be understood by those skilled in the art that, gripping handle 301 (401,501,601) can also be arranged on power set 100, under this structure, its gripping handle 301 (401,501 of all types of electric tools, 601) the most identical, the change of tool body type will not be followed and change.In contrast, gripping handle 301 (401,501,601) is arranged on tool body, owing to the structure of every kind of gripping handle 301 (401,501,601) adapts with tool body type, the comfortableness that operator grips can be significantly improved.
It is illustrated in figure 2 the concrete structure of the first better embodiment of power set 100.Power set 100 include main casing 102, motor 104, control circuit 110.Control circuit 110 controls the rotary motion of motor 104.Main casing 102 is removably installed in tool housing 302 (402,502,602).When main casing 102 is installed on described tool housing 302 (402,502,602), workpiece 304 (404,504,604) can be driven by motor 104, the i.e. power of motor 104 can pass to workpiece 304 (404,504,604).Preferably, motor 104 is brushless electric machine.Control circuit 110 controls commutation and the rotary speed thereof of brushless electric machine.In present embodiment, the output of power set 100 will not change according to the difference of the type of tool body.Under this structure, for realize power set 100 between different tool bodies general, corresponding structure can be set in tool body, the input that is constant is converted to and the input of tool body type matching.
It is illustrated in figure 3 the concrete structure of the second better embodiment of power set 100.Second better embodiment is improved by relative to the first better embodiment, and power set 100 can recognize that different tool body types, corresponding output and the rotary motion of tool body type matching.Concrete, power set 100 include main casing 102, motor 104, recognition unit 108, control circuit 110.Main casing 102 is removably installed in tool housing 302 (402,502,602).When main casing 102 is installed on described tool housing 302 (402,502,602), workpiece 304 (404,504,604) can be driven by motor 104, the i.e. power of motor 104 can pass to workpiece 304 (404,504,604).Motor 104 selectively exports rotary motion.Recognition unit 108 identifies the type of the tool body installed with power set 100, and the generation signal corresponding with tool body type is sent to control circuit 110.Control circuit 110 controls the rotary motion of motor 104 output and tool body type matching according to the signal that recognition unit 108 sends.When power set 100 are installed on different tool bodies, the signal that control circuit 110 sends according to recognition unit 108, motor 104 can be controlled and export different rotary motions, thus transmit different power to workpiece 304, and then make the tool body being provided with these power set 100 can export the power output with tool body type matching.It is achieved in power set 100 to share between different tool bodies.
It is illustrated in figure 4 the concrete structure of the 3rd better embodiment of power set 100.Power set 100 include that main casing 102, motor 104, recognition unit 108, control circuit 110 and energy provide unit 112.Main casing 102 is removably installed in tool housing 302 (402,502,602).When main casing 102 is installed on described tool housing 302 (402,502,602), workpiece 304 (404,504,604) can be driven by motor 104, the i.e. power of motor 104 can pass to workpiece 304 (404,504,604).Motor 104 selectively exports rotary motion.Energy provides unit 112 to provide power for motor 104.Energy provides unit 112 can be ac power cable, it is also possible to for chargeable energy-storage units, or can provide AC or D/C power simultaneously.Recognition unit 108 identifies the type of the tool body installed with power set 100, and the signal of generation and tool body type matching is sent to control circuit 110.Control circuit 110 controls the rotary motion of motor 104 according to the signal that recognition unit 108 sends.When power set 100 are installed on different tool bodies, the signal that control circuit 110 sends according to recognition unit 108, motor 104 can be controlled and export different rotary motions, thus transmit different power to workpiece 304, and then make the tool body being provided with these power set 100 can export the power output with tool body type matching.It is achieved in power set 100 to share between different tool bodies.Additionally, in present embodiment, energy provides unit 112 together with motor 104 other elements such as grade, is co-located in main casing 102.The structure that this kind of structure makes power set 100 is single, it is simple to carries out conversion between different electric tools and uses.
As it is shown in figure 5, the present invention also provides for the 4th better embodiment of power set 100.4th better embodiment is relative to the difference of the 3rd better embodiment, and when energy provides unit 112 to be chargeable energy-storage units, energy provides unit 112 to have the 3rd independent housing 1121.Power set 100 are provided with and house the 3rd housing 1121 and fixedly mount the resettlement section 1022 of the 3rd housing 1121.Energy provides unit 112 removably to be installed by the main casing 102 of power set 100 and support, and consequent provides the benefit that, energy provides unit 112 to remain traditional structure, it is possible to use traditional charger is its charging, charges more convenient.
The present invention also provides for the 5th better embodiment of power set 100.5th better embodiment is relative to the difference of the 3rd better embodiment, and power set 100 do not comprise recognition unit 108.
The present invention also provides for the 6th better embodiment of power set 100.6th better embodiment is relative to the difference of the 4th better embodiment, and power set 100 do not comprise recognition unit 108.
In six kinds of embodiments of power set 100, the power set 100 of the first and second better embodiment do not comprise energy provides unit 112.Under this structure, energy provides unit 112 to be arranged on tool body.Energy provides unit 112 to be unremovably arranged on tool body, or is removably disposed on tool body.
In aforementioned various embodiment, power set 100 can not comprise control circuit 110.Under this sight, control circuit 110 is included in tool body.Control circuit 110 can a part be arranged in power set 100, and another part is arranged in tool body.
In aforementioned various embodiment, control circuit 110 can control outside the rotary motion of motor 104, it is also possible to controlling energy provides the discharge process of unit 112.Specifically, control circuit 110 detects energy in power set 100 discharge process provides the discharge condition of unit 112, such as discharge current, current voltage etc., and according to the discharge condition detected, it is allowed to or forbid that energy provides unit 112 to provide to the energy of motor 104.
In aforementioned various embodiment, when energy provides unit 112 to be battery bag, battery bag voltage is 20V and above voltage.
The recognition unit 108 of power set 100 identifies that the mode of the type of the tool body of electric tool has multiple, including automatically identifying and semi-automatic identification two ways.Automatically identify that the type of the tool body of electric tool may be accomplished by: the marker elements with specific tool body type matching is set on tool body.When power set 100 are installed to tool body, recognition unit 108, by the detecting element detection marker elements set within it, by the type of the signal identification marking element that detecting element detects, and then identifies the type of this tool body.The type of semiautomatic fashion identification electric tool may be accomplished by: recognition unit 108 includes being arranged on main casing 102 the selection element arranging confession user operation, selects element to be operationally in different conditions.User selects element to be in the type of different state setting means main bodys by operation, and recognition unit 108 identifies the operating result of user's state to selecting element, thus identifies the type of the tool body that user sets.Below as a example by the 3rd better embodiment of power set 100, in conjunction with Fig. 6 and Fig. 7, these two kinds of recognition method are introduced.It will be appreciated by persons skilled in the art that recognition method introduced below is equally applicable to other embodiments of power set 100.
It is illustrated in figure 6 the structural representation of a better embodiment of automatic identification facility type of subject.In present embodiment, recognition unit 108 identifies the type of the tool body installed with power set 100 automatically by non-contacting mode.Concrete, recognition unit 108 includes processing circuit 1080 and four Hall elements being positioned on diverse location, respectively it is positioned at the first Hall element 1082 of primary importance, it is positioned at the second Hall element 1084 of the second position, it is positioned at the 3rd Hall element 1086 of the 3rd position, is positioned at the 4th Hall element 1088 of the 4th position.Tool housing 302 (402 at four kinds of tool bodies, 502,602) being respectively provided with a Magnet 310 on, its position is corresponding with in aforementioned four Hall element respectively, during to ensure that power set 100 are installed to tool body, Hall element can sense Magnet 310.When main casing 102 is installed on tool housing 302 (402,502,602) time, the corresponding relation of installation site due to installation site and the Magnet of Hall element, Magnet 310 is near the first Hall element 1082, away from the second Hall element the 1084, the 3rd Hall element 1086 and the 4th Hall element 1088.Now the first Hall element 1082 produces hall signal, and the second Hall element the 1084, the 3rd Hall element 1086 and the 4th Hall element 1088 do not produce hall signal.Process circuit 1080 and receive hall signal, and identify this hall signal from the first Hall element 1082, the most i.e. may recognize that the type of the tool body installing power set 100.
In other embodiments, marker elements can also be mechanical contact, and recognition unit 108 includes that two or more is arranged at the mechanical switch of diverse location, and the position of mechanical switch is corresponding with the position of mechanical contact.When power set 100 are installed on tool body, the mechanical contact on tool body triggers the mechanical switch on relevant position.Mechanical switch closes after being triggered.Recognition unit 108 is transferred to the position of the mechanical switch of Guan Bi according to state by disconnection, identifies the type of the tool body installing power set 100.Additionally, marker elements can also be photoswitch, two-dimensional encoded, identify other forms any such as resistance.
Fig. 7 show the power set 100 a kind of better embodiment by semiautomatic fashion identification power tool type.Recognition unit 108 includes processing circuit 1080 and is arranged on main casing 102 and can be by the selection element of user's manual operation.In present embodiment, select element for by compressing switch 114.In Preset Time, operator's pressing is once by compressing switch 114, and represent that user selects is the electric tool of the first type;Press twice by compressing switch 114, represent that user selects is the electric tool of the second type.The rest may be inferred, in Preset Time, 114 is pressed different number of times by compressing switch, represents user and have selected different types of electric tool.Process circuit 1080 and identify that Preset Time is interior by 114 number of times being pressed that compress switch, the type of the electric tool that user selects can be recognized.Thus realize semi-automatically identifying the type of the tool body installing power set 100.
In other embodiments, selecting element can be have specific markers multiple by compressing switch 114, a kind of specific markers by compressing switch 114, represent a type of tool body.Selection element can also be for having multiple gear toggle, when toggle is operatively in a certain particular gears, represents user and have selected a certain certain types of tool body.
Power set 100 as an independent power subject, need to its work time the safety problem brought protect.In the present invention, arranged by the circuit between power set 100 and tool body and be electrically connected with and ensure not work when power set 100 are independently arranged, only just can start work when power set 100 are installed on tool body, thus avoid the safety problem that power set 100 bring as an independent power subject.Below as a example by power set 100 are the 3rd better embodiment, the circuit block diagram of several better embodiment of electric tool is introduced.It will be appreciated by persons skilled in the art that the electrical connection between power set 100 and the tool body that circuits below block diagram is embodied is equally applicable to other embodiments of power set 100.
It is illustrated in figure 8 the circuit block diagram of the first better embodiment of electric tool.In present embodiment, power set 100 include motor 104, and energy provides unit 112, recognition unit 108, control circuit 110 and two electrical nodes, the 3rd node 116 and fourth node 118.Wherein the 3rd node 116 and energy provide unit 112 to be electrically connected with, and fourth node 118 is electrically connected with motor 104.Tool body includes two electrical nodes that activate switch 308 and the both sides with activate switch 308 are electrically connected with, primary nodal point 312 and secondary nodal point 314.Activate switch 308 has closed and disconnected two states, triggers can be converted to closure state by off-state through operator.The function of each module that power set 100 comprise with tool body is identical with aforementioned embodiments.As shown in Figure 8, being off-state between the 3rd node 116 and fourth node 118, therefore motor 104 and energy provide and not yet form closed-loop path between unit 112.When main casing 102 is installed on tool housing 302, the 3rd node 116 and fourth node 118 are electrically connected with by primary nodal point 312 and secondary nodal point 314.Now Guan Bi activate switch 308, motor 104 and energy provide and form closed-loop path between unit 112, and energy provides unit 112 to provide energy, control circuit 110 to control motor 104 for motor 104 to start to rotate.When tool housing 302 is separated from each other with main casing 102, motor 104 and energy provide and not yet form closed-loop path between unit 112, Guan Bi activate switch 308, motor 104 and energy provide still cannot form closed-loop path between unit 112, energy provides unit 112 energy, motor 104 cannot be provided to operate for motor 104.
It is illustrated in figure 9 the circuit block diagram of the second better embodiment of electric tool.In present embodiment, power set 100 include motor 104, and energy provides unit 112, recognition unit 108, control circuit 110, activate switch 115 and two electrical nodes, the 3rd node 116 and fourth node 118.Wherein the 3rd node 116 and energy provide unit 112 to be electrically connected with, and secondary nodal point 314 is electrically connected with motor 104.Activate switch 115 is arranged on energy and provides between unit 112 and motor 104, has closed and disconnected two states.Activate switch 115 triggers can be converted to closure state by off-state through operator.Tool body includes two electrical nodes being interconnected, primary nodal point 312 and secondary nodal point 314.The function of each module that power set 100 comprise with tool body is identical with aforementioned embodiments.As it is shown in figure 9, be off-state between the 3rd node 116 and fourth node 118, therefore motor 104 and energy provide and not yet form closed-loop path between unit 112.When main casing 102 is installed on tool housing 302, the 3rd node 116 and fourth node 118 are electrically connected with by primary nodal point 312 and secondary nodal point 314.Now Guan Bi activate switch 308, motor 104 and energy provide and form closed-loop path between unit 112, and energy provides unit 112 to provide energy, control circuit 110 to control motor 104 for motor 104 to start to rotate.When tool housing 302 is separated from each other with main casing 102, motor 104 and energy provide and not yet form closed-loop path between unit 112, Guan Bi activate switch 308, motor 104 and energy provide still cannot form closed-loop path between unit 112, energy provides unit 112 energy, motor 104 cannot be provided to operate for motor 104.
Before 3rd node 116 and fourth node 118 disconnect the structure guarantee power set 100 arranged and electric tool is set up before being electrically connected with, that is power set 100 are installed on electric tool, power set 100 can not start work.Which thereby enhance the safety of power set 100.
The mode setting up electric connection between power set 100 and tool body has multiple.Can wirelessly or wired mode realize primary nodal point 312 and the electric connection of the 3rd node 116, secondary nodal point 314 and the electric connection of fourth node 118 thus realize between power set 100 and tool body set up be electrically connected with.Wherein, wired mode can be, tool body arranges first be electrically connected with primary nodal point 312 and is connected terminal, and second be electrically connected with secondary nodal point 314 is connected terminal.Arranging the 3rd be electrically connected with the 3rd node 116 on power set 100 and be connected terminal, the 4th be electrically connected with fourth node 118 is connected terminal.First connection terminal, the second connection terminal, the 3rd connection terminal, the 4th connection terminal can be separate terminal, and first connect terminal position with the 3rd connect terminal position corresponding, second connect terminal position with the 4th connection terminal position corresponding.When power set 100 are installed to tool body, first connects terminal and the 3rd connects terminal connection, and the second connection terminal and the 4th connects terminal and connects so that set up electric connection between power set 100 and tool body.Now, closing activate switch 308, motor 104 and energy provides the loop between unit 112 to be switched on.First connects terminal and second connects terminal it can also be provided that one, and correspondingly, the 3rd connects terminal and the 4th connects the integrative-structure that terminal is also configured as matching.Can realize equally, when power set 100 are installed to tool body, first connects terminal and the 3rd connects terminal connection, and the second connection terminal and the 4th connects terminal and connects, it is achieved set up electric connection between power set 100 and tool body.
The present invention also provides for the 3rd better embodiment and realizes when tool housing 302 separates with main casing 102, Guan Bi activate switch 115, motor 104 and energy provide cannot form closed-loop path between unit 112, when main casing 102 is installed on tool housing 302, Guan Bi activate switch 115, motor 104 and energy provide and form closed-loop path between unit 112.3rd better embodiment is with the difference of the second better embodiment, arranges detecting element and the switch element of examined element control between the 3rd node 116 and fourth node 118.When detecting element detects that main casing 102 is installed on tool housing 302, send corresponding control signal and control switch element Guan Bi.Now, the 3rd node 116 and fourth node 118 electrical communication, close activate switch 115, motor 104 and energy and formation closed-loop path between unit 112 is provided, motor 104 starts to rotate.Otherwise, detecting element detects that main casing 102 is fitted without when tool housing 302, sends corresponding control signal and controls switch element disconnection.Now, the 3rd node 116 and fourth node 118 cannot electrical communication, closing activate switch 115, motor 104 and energy provides and cannot form closed-loop path between unit 112, and motor 104 cannot rotate.
It is the circuit block diagram of the 4th better embodiment of electric tool as shown in figure 13.In present embodiment, power set 100 include motor 104, and energy provides unit 112, control circuit 110 and two electrical nodes, the 3rd node 116 and fourth node 118.3rd node 116 and fourth node 118 are all electrically connected with control circuit 110.Control circuit 110 farther includes controller 1101 and switch element 1102.Tool body includes two electrical nodes that activate switch 308 and the both sides with activate switch 308 are electrically connected with, primary nodal point 312 and secondary nodal point 314.Activate switch 308 is arranged on tool housing, is operationally in Guan Bi or off-state.When main casing 102 is installed on tool housing 302, the 3rd node 116 and fourth node 118 are electrically connected with primary nodal point 312 and secondary nodal point 314.By the 3rd node 116 and fourth node 118 respectively with primary nodal point 312 and the electric connection of secondary nodal point 314, controller 1101 can detect activate switch 308 and be in Guan Bi or off-state.When controller 1101 detects that activate switch 308 is off, controlling switch element 1102 and be off, energy provides the energy offer of unit 112 to motor 104 to be prohibited.When controller 1101 detects that activate switch 308 is in closure state, controlling switch element 1102 and be in closure state, energy provides the energy offer of unit 112 to motor 104 to be allowed to.
In the respective embodiments described above, power set 100 selectively comprise or do not comprise one or two in recognition unit 108 and control circuit 110.When power set 100 comprise control circuit 110, control circuit 110 can only have control of discharge function, or have the function of the rotary motion of control of discharge function and control motor simultaneously.
According to above-mentioned embodiment, the circuit block diagram of electric tool at least includes control circuit and energy delivery circuit.Energy is provided unit 112 and motor 104 to be electrically connected with by energy delivery circuit, forms energy and provides the energy transmission loop of unit 112 to motor 104.When energy delivery circuit forms closed-loop path, energy provides the energy of unit 112 to pass to motor 104, and motor 104 rotates.When energy delivery circuit forms cutoff circuit, energy provides the energy of unit 112 cannot pass to motor 104, and motor 104 stall rotates or keeps static.Energy delivery circuit can alternatively be arranged in power set 100 or in tool body, it is also possible to a part is arranged in power set 100, and another part is arranged in tool body.Control circuit can alternatively be arranged in power set 100 or in tool body, it is also possible to a part is arranged in power set 100, and another part is arranged in tool body.
In the second better embodiment shown in the first better embodiment as shown in Figure 8, Fig. 9 and the 4th better embodiment shown in Figure 13, tool body and power set include a part of circuit respectively.The electric connection with the 3rd node 116 and fourth node 118 respectively that is electrically connected with by primary nodal point 312 and secondary nodal point 314 between two parts circuit realizes.Wherein, the circuit in tool body can simplify the referred to as first circuit.Circuit in power set 100 at least includes that two parts, a part of circuit and the 3rd node 116 and fourth node 118 are electrically connected with, and this partial circuit simplifies referred to as second circuit.Another part circuit is then connected with second circuit.Certainly, power set 100 can comprise other circuit more, or only comprises Part II circuit.Tool body can comprise other circuit more.
In the first better embodiment as shown in Figure 8 with in the second better embodiment as shown in Figure 9, the first circuit and second circuit collectively form energy and provide the energy delivery circuit of unit 112 to motor 104.Further, in better embodiment as shown in Figure 8, activate switch 308 is positioned in the first circuit.Activate switch 308 is operationally triggered, and then controls whether energy delivery circuit forms closed-loop path.Concrete, when power set 100 and tool body complete to be electrically connected with, and activate switch 308 is triggered when closing, energy provides the energy delivery circuit of unit 112 to motor 104 to form closed-loop path, and energy provides unit 112 to be activated switch 308 return energy to the energy that motor 104 provides and provides unit.When power set 100 and tool body complete to be electrically connected with, but activate switch 308 is triggered during disconnection, energy provides the energy delivery circuit of unit 112 to motor 104 cannot form closed-loop path.
In the 4th better embodiment as shown in fig. 13 that, energy provides the energy delivery circuit of unit 112 to motor 104 to be arranged in power set.Second circuit, according to the signal of the first circuit, controls whether energy delivery circuit forms closed-loop path.In the present embodiment, the first circuit includes the activate switch 308 being arranged on tool housing.Activate switch 308 has closed and disconnected two states.One end of activate switch connects primary nodal point 312, and the other end connects secondary nodal point 314.First circuit includes primary nodal point 312, secondary nodal point 314, activate switch 308, circuit primary nodal point 312 and activate switch 308 connected and circuit secondary nodal point 314 and activate switch 308 connected.When main casing 102 is installed on tool housing 302, the 3rd node 116 and fourth node 118 are electrically connected with primary nodal point 312 and secondary nodal point 314.Can detect that the control instruction of electric tool is started or stoped by operator by the Guan Bi of activate switch 308 or the state of disconnection.By the 3rd node 116 and fourth node 118 respectively with primary nodal point 312 and the electric connection of secondary nodal point 314, its status information is passed to controller 1101, thus obtains operator's control instruction to electric tool by activate switch 308.When controller 1101 detects that activate switch 308 is off, controlling switch element 1102 and be off, energy provides the energy delivery circuit of unit 112 to motor 104 to disconnect.When controller 1101 detects that activate switch 308 is in closure state, controlling switch element 1102 and be in closure state, energy provides the energy delivery circuit Guan Bi of unit 112 to motor 104.Under the enlightenment of the present embodiment, the first circuit design can be any other mode by those skilled in the art as the case may be.As activate switch 308 is replaced with rotary switch, rotary switch has the first state and the second state, when rotary switch is in the first state, controller 1101 controls switch element 1102 and is off, and energy provides the energy delivery circuit of unit 112 to motor 104 to disconnect;When rotary switch is in the second state, controller 1101 controls switch element 1102 and is in closure state, and energy provides the energy delivery circuit Guan Bi of unit 112 to motor 104.Activate switch can also be set to trigger member, trigger member has triggering state and release conditions, when trigger member is in release conditions, controller 1101 controls switch element 1102 and is off, and energy provides the energy delivery circuit of unit 112 to motor 104 to disconnect;When trigger member is in triggering state, controller 1101 controls switch element 1102 and is in closure state, and energy provides the energy delivery circuit Guan Bi of unit 112 to motor 104.
Above describe the electric connection between power set 100 and tool body.Below in conjunction with Figure 10 to Figure 12, illustrate the mechanical connection between power set 100 and tool body.
When the mechanical connection between power set 100 and tool body is described, being described in detail the connection between power set 100 and tool body as a example by blower tool body 300, the attachment structure between power set 100 and grass-mowing machine tool body 400, chain saw tool body 500, shrub and hedge trimmer tool body 600 and other any means main bodys all refers to the attachment structure between power set 100 and blower tool body 300.Mechanical connection between power set 100 and tool body includes the mechanical connection of tool housing 302 and main casing 102, and the attachment structure between the motor 104 of power set 100 and the workpiece 304 of tool body.
Tool housing 302 is provided with the first installation portion 316, and main casing 102 is provided with the second installation portion 120.First installation portion 316 selectively cooperates with the second installation portion 120.When the first installation portion 316 coordinates with the second installation portion 120, main casing 102 is supported by tool housing 302, and tool housing 302 is relative with main casing 102 immovable fixing.It is the first installation portion 316 and the second installation portion 120 one preferably embodiment that realizes cooperating as shown in Figure 10.First installation portion 316 includes being arranged at the first abutment face 318 inside tool housing 302, is arranged at the buckle 320 outside tool housing 302, the button 322 triggering buckle 320 and the gathering sill 324 playing the guiding role.Pressing button 322 can make buckle 320 be in release conditions or locking state.Second installation portion 120 includes the second abutment face 122, lug 124 and the guide rail 126 being arranged at outside main casing 102.The position of lug 124 and number match with position and the number of buckle 320.The position of guide rail 126 and number match with position and the number of gathering sill 324.When tool housing 302 and main casing 102 install, first abutment face 318 abuts with the second abutment face 122, and guide rail 126 is contained in gathering sill 324, and buckle 320 is in locking state, thus lock lug 124 so that tool housing 302 is relative with main casing 102 immovable fixing.
Pressing button 322, makes buckle 320 be in release conditions.Subsequently, being alignd with the gathering sill 324 of tool body by the guide rail 126 of power set 100, the longitudinally along gathering sill 324 pushes power set 100 makes it close to tool body, arrives position as shown in figure 11.Push power set 100 further, until the first abutment face 318 abuts with the second abutment face 122.Subsequently, discharge button 322, make buckle 320 be in locking state so that tool housing 302 installs with main casing 102, reach state as shown in figure 12.Under state shown in Figure 12, main casing 102 is partially housed in tool housing 302.Preferably, in first installation portion 316 being partially housed in tool housing 302 of main casing 102 at least 1/3.This structure makes the installation between power set 100 and tool body more firm, and the center of gravity layout of complete machine is more reasonable.
In Figure 14 to the embodiment shown in 15, and being to the difference of the embodiment shown in 12 such as Figure 10, lug 124 is replaced by convex 124 ', and button 322 is replaced by knob 322 ', and buckle 320 is replaced by projection 320 '.Convex 124 ' arranges a circle along the periphery of main casing 102.The rotation of knob 322 ' drive projection 320 ' and convex 124 ' against or be not against.When projection 320 ' and convex 124 ' against time, power set 100 are secured to tool body.When projection 320 ' is not against with convex 124 ', power set 100 can opposite tool main body be moved.
From the embodiment shown in Figure 10 to Figure 15, tool housing is provided with the trigger units such as button 322 or knob 322 ', and the locking member such as buckle 320 or projection 320 ';Be locked parts lug 124 or the convex 124 ' coordinated with locking member it is provided with on main casing 102.When power set 100 are connected with tool body, trigger unit makes locking member will be locked parts locking, thus is locked to tool body by power set 100.When tool body needs to change, trigger unit obtains locking member and discharges the parts that are locked, so that power set and tool body can relative movements.
As shown in Figure 10 to Figure 15, the mechanical connection between power set 100 and tool body also includes the connection between the motor 104 of power set 100 and the workpiece 304 of tool body.Power set 100 include the output shaft 106 being connected with motor 104.Tool body includes the power shaft 306 being connected with workpiece 304.All may select between motor 104 and output shaft 106 and between workpiece 304 and power shaft 306 and power transmission mechanism is set.Typically, power transmission mechanism is gear structure.When being not provided with power transmission mechanism between motor 104 and output shaft 106, motor 104 is joined directly together with output shaft 106.When being not provided with power transmission mechanism between workpiece 304 and power shaft 306, workpiece 304 is joined directly together with power shaft 306.The connection of motor 104 and workpiece 304 is realized by the connection between power shaft 306 and output shaft 106.Connection between output shaft 106 and power shaft 306 is detachable.When main casing 102 is installed on tool housing 302, output shaft 106 and power shaft 306 are in connection status, and the relative power shaft 306 of output shaft 106 is irremovable around the circumference of output shaft 106.The output shaft 106 of power set 100 is to be provided with accepting groove on power shaft 306, output shaft 106 is provided with projection with a better embodiment of power shaft 306 mechanical connection of tool body.When main casing 102 is installed on tool housing 302, projection is contained in accepting groove, and it is mobile around the circumference of output shaft 106 that accepting groove limits projection.In a better embodiment, accepting groove is internal spline 326, and projection is external splines 128.In other embodiments, accepting groove and projection can also be for thinking other structures such as unmatched tetragonal body, flange.
Due between motor 104 and output shaft 106, and between workpiece 304 and power shaft 306, drive mechanism is the most selectively set, therefore, power set 100 can be that the output shaft of workpiece 304 tool body that is parallel with the output shaft of motor 104 or that overlap provides power, it is also possible to the tool body being at an angle of setting for the output shaft of workpiece 304 and the output shaft of motor 104 provides power.Preferably, the output shaft of the workpiece of at least two tool body that electric tool system comprises is all parallel with the output shaft of motor 104 or overlaps.Thus bring the simple in construction providing the benefit that tool body, it is not necessary to drive mechanism is additionally set and carries out angular transition at the output shaft of motor 104 and the output shaft of workpiece 304.
The structure chart of the electric tool system of an other better embodiment is provided such as Figure 16.Identical with the electric tool system shown in Fig. 1, power set 100 can be that different types of tool body provides power.Being improved by of native system, energy provides unit 112 to include bearing structure 130, energy can provide unit 112 bear the back in operator by bearing structure 130.Energy provides unit 112 also to include flexible apparatus 132.Realizing energy by flexible apparatus 132 provides unit 112 to realize being electrically connected with and/or being mechanically connected with the miscellaneous part of electric tool.
In present embodiment, power set 100 can only comprise motor 104.Power set 100 are removably installed in tool body and connect or be removably installed in energy offer unit 112 and provided unit 112 to support by tool body or energy.When power set 100 are removably installed in energy offer unit 112, energy provides unit 112 to be directly electrically connected with power set 100, energy provides unit 112 by flexible apparatus 132 and tool interface 306,406,506, any one in 606 connects, to realize power set 100 and energy offer unit 112 and the machinery of tool body and/or electric connection, to transmit power to tool body.
When power set 100 are removably installed in any one tool body, energy provides unit 112 by flexible apparatus 132 and tool interface 306,406,506, any one in 606 connects, to realize energy offer unit 112 and the machinery of tool body and/or electric connection.Power set 100 are directly connected to tool body simultaneously.Energy provides unit 112 indirectly can be electrically connected with by the circuit realiration in tool body with power set 100.Energy provides unit 112 can also realize directly being electrically connected with by flexible apparatus 132 with power set 100.
Present embodiment medium power device 100 can only comprise motor 104 and wiring board.Power set 100 are removably installed in tool body and connect or be removably installed in energy offer unit 112 and provided unit 112 to support by tool body or energy.When power set 100 are removably installed in energy offer unit 112, energy provides unit 112 to be directly electrically connected with power set 100, energy provides unit 112 by flexible apparatus 132 and tool interface 306,406,506, any one in 606 connects, to realize power set 100 and energy offer unit 112 and the machinery of tool body and/or electric connection, to transmit power to tool body.
When power set 100 are removably installed in any one tool body, energy provides unit 112 by flexible apparatus 132 and tool interface 306,406,506, any one in 606 connects, to realize energy offer unit 112 and the machinery of tool body and/or electric connection.Power set 100 are directly connected to tool body simultaneously.Energy provides unit 112 indirectly can be electrically connected with by the circuit realiration in tool body with power set 100.Energy provides unit 112 can also realize directly being electrically connected with by flexible apparatus 132 with power set 100.
Present embodiment medium power device 100 comprises motor 104 and energy provides unit 112.Now bear structure 130 to may be provided on power set 100.Motor 104 is removably installed in power set 100 and is supported by power set 100.Energy provides unit 112 to be directly electrically connected with motor 104, and power set 100 are by flexible apparatus 132 and tool interface 306,406,506, any one in 606 connects, to realize machinery and/or the electric connection of power set 100 and tool body, to transmit power to tool body.
Present embodiment medium power device 100 includes that motor 104, wiring board and energy provide unit 112.Now bear structure 130 to may be provided on power set 100.Motor 104 is removably installed in power set 100 and is supported by power set 100.Energy provides unit 112 to be directly electrically connected with motor 104, and power set 100 are by flexible apparatus 132 and tool interface 306,406,506, any one in 606 connects, to realize machinery and/or the electric connection of power set 100 and tool body, to transmit power to tool body.
Tool body is smoothly passed to, it is preferred that flexible buffering piece, the impact between buffer output shaft 106 and power shaft 306 are set between output shaft 106 and power shaft 306, operate steadily for realizing the kinetic force of power set 100.
In the present invention, the situation that activate switch 308 is arranged on tool housing includes the situation that activate switch 308 is set directly on tool housing, also include that activate switch 308 is arranged on the situation on tool housing indirectly by switching part, also include the situation that activate switch 308 is arranged on electric tool by switching part.
The energy of the present invention provides unit 112 can provide DC source or alternating current power supply to motor 104.When energy provides unit 112 to provide DC source, energy provides unit 112 can be battery bag or be super capacitor homenergic memory element, it is also possible to for comprising AC power cord and the integrated unit of AC-DC translation circuit.When energy provides unit 112 to provide alternating current power supply, energy provides unit 112 can be AC power cord, or comprises DC source and the integrated unit of DC-AC inverter circuit.
The wiring board of the present invention can include that the hall that brushless electric machine carries detects plate or other detection plates, and now, wiring board is preferably provided in brushless electric machine.Wiring board can also include at least one in control circuit 110 or recognition unit 108.Wiring board can also comprise at least two detected in plate or control circuit 110 or recognition unit 108 that brushless electric machine carries.
The power set 100 of the present invention can also include at least one in motor and wiring board, or power set 100 include that motor and energy provide at least one in unit.
In the present invention, it is possible to realize the basis that power set carry out sharing between different power tool body, it is because the parts that electric tool that power set are different is common.On the basis of sharing, it is preferred that the power set of the present invention have employed the motor of life-span length, such as brushless electric machine so that can be by the performance of motor to ultimate attainment on the basis of sharing.During sharing, the life-span of battery bag is short relative to the life-span of brushless electric machine, and therefore, it is detachable relative to the main casing of power set that the present invention proposes battery bag.In addition, if the motor of power set is general motor, then owing to general motor is in the case of rated power is certain, its power bracket that can export is limited, the general tool body limited types of power set can be caused must be requested that it is the akin tool body of rated power.For solving this problem, preferably, the motor of the present invention is the motor that a kind of special material is made, it is in the case of rated power is certain, exportable power bracket is bigger, so that the tool body that rated power differs greatly, between also can realize the general of power set, expand the general context of power set further.Under current techniques environment, the motor of the present invention is brushless electric machine.Along with the development of technology, brushless electric machine can be replaced by corresponding new motor.This replacement is all the content that the present invention protects.At this also, it should be noted the motor of the present invention is preferably the motor that energy density is high, i.e. in the case of identical power output, the volume of motor is less.
The above-mentioned definition to each element is not limited in various concrete structures or the shape mentioned in embodiment, and it can be carried out replacing with knowing simply by those of ordinary skill in the art.
It may occur to persons skilled in the art that, the present invention can also have other implementation, but as long as its technical spirit used is same or like seemingly with the present invention, or any variations and alternatives made based on the present invention are all within protection scope of the present invention.

Claims (11)

1. an electric tool, including tool body and power set, described power set provide power for tool body, it is characterised in that
Described tool body includes, tool housing, and the workpiece supported by described tool housing;
Described power set include, main casing, and supported by described main casing motor, for motor provide energy energy provide unit;
Described main casing removably can be installed with described tool housing, and when described main casing is installed on described tool housing, described workpiece can be driven by described motor;
Described electric tool still further comprises activate switch, when described tool housing separates with described main casing, close described activate switch, described motor and described energy provide cannot form closed-loop path between unit, when described main casing is installed on described tool housing, close described activate switch, described motor and described energy and formation closed-loop path between unit is provided.
Electric tool the most according to claim 1, it is characterised in that described activate switch is arranged on described tool housing.
Electric tool the most according to claim 1, it is characterised in that described activate switch is arranged on described main casing.
Electric tool the most according to claim 1, it is characterised in that described energy provides unit to be battery bag.
Electric tool the most according to claim 4, it is characterised in that described battery bag removably can be installed with described main casing.
Electric tool the most according to claim 1, it is characterised in that described power set still further comprise control circuit, described control circuit controls the rotary motion of motor.
7. an electric tool, including tool body and power set, described power set provide power for tool body, it is characterised in that
Described tool body includes, tool housing, and the workpiece supported by described tool housing;
Described power set include, main casing, and supported by described main casing motor, for motor provide energy energy provide unit;
Described power set can be detachably connected with described tool body, and when described power set are connected with described tool body, described workpiece can be driven by described motor;
Described electric tool still further comprises activate switch, when described power set separate with described tool body, close described activate switch, described motor and described energy provide cannot form closed-loop path between unit, when described power set are connected with described tool body, close described activate switch, described motor and described energy and formation closed-loop path between unit is provided.
8. an electric tool system, including power set and at least two tool body, described power set provide power for described at least two tool body, it is characterised in that
Tool body includes each of in described at least two tool body, tool housing, and the workpiece supported by described tool housing;
Described power set include, main casing, and supported by described main casing motor, for motor provide energy energy provide unit;
Described power set can be detachably connected with described tool body, and when described power set are connected with described tool body, described workpiece can be driven by described motor;
Described electric tool system still further comprises activate switch, when described power set separate with described tool body, close described activate switch, described motor and described energy provide cannot form closed-loop path between unit, when described power set are connected with described tool body, close described activate switch, described motor and described energy and formation closed-loop path between unit is provided.
9. an electric tool system, including power set and at least two tool body, described power set provide power for described at least two tool body, it is characterised in that
Tool body includes each of in described at least two tool body, tool housing, and the workpiece supported by described tool housing;
Described power set include, main casing, and supported by described main casing motor, for motor provide energy energy provide unit;
Described main casing removably can be installed with described tool housing, and when described main casing is installed on described tool housing, described workpiece can be driven by described motor;
Described electric tool system still further comprises activate switch, when described tool housing separates with described main casing, close described activate switch, described motor and described energy provide cannot form closed-loop path between unit, when described main casing is installed on described tool housing, close described activate switch, described motor and described energy and formation closed-loop path between unit is provided.
Electric tool the most according to claim 9, it is characterised in that described activate switch is arranged on described tool housing.
11. electric tools according to claim 9, it is characterised in that described activate switch is arranged on described main casing.
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