CN201174678Y

CN201174678Y - Power source and movable electric tool adopting the power source

Info

Publication number: CN201174678Y
Application number: CNU2008200833424U
Authority: CN
Inventors: 姜卫亮; 吴世清
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-03
Filing date: 2008-02-03
Publication date: 2008-12-31
Anticipated expiration: 2018-02-03

Abstract

The utility model discloses a mobile electric tool adopting a novel power source. The electric tool comprises a split type power source and at least two tool bodies, wherein the power source has at least two output ports; the tool bodies can be inserted into the output ports; the power source adopts an AC servo controller; an input end of the power source is powered by AC commercial power; and the tool bodies adopt permanent magnetic brushless DC machine. The mobile electric tool has the advantages that the electric tool has prolonged service life, energy conservation, high safety and flexibility, and does not generate interference on other equipment during operation; the electric tool can realize accurate high-speed braking; and a worker just needs to hold the tool bodies with lighter weight and smaller volume during work, thereby greatly reducing labor intensity and work fatigue and increasing work efficiency. The mobile electric tool overcomes the technical bias in the filed, and adopts a technical proposal according to which an AC servo controller drives a plurality of permanent magnetic brushless DC machines, thereby solving the problem of high cost and ensuring the possibility that the AC servo controller can be applied to similar products.

Description

Power source and adopt the mobile type electric tool of this power source

[technical field]

The utility model relates to mobile type electric tool and power source thereof.

[background technology]

The work of mobile type electric tool all is to adopt motor that electric energy is converted into mechanical energy, makes related tool rotation or mobile, finishes related work.This series products all is to adopt series machine at present.

There are many unsurmountable defectives in prior art:

1. the commutator of general series machine had only hundreds of individual hour useful life, and the life-span of commutator and carbon brush is directly restricting the life-span of entire product; Can produce electromagnetic interference electrical network or other wireless device during commutator work; Series machine is not accomplished accurate two closed-loop control; Because speed-regulating function is controlled voltage with the silicon controlled angle of flow, so torque ratio is less during series machine low speed; Series machine can not be realized accurately brake at a high speed.

2. mobile type electric tool itself had both comprised motor, comprised controller again, and weight is very heavy, and volume is big, had increased workman's operation intensity, easily caused work fatigue, influenced operating efficiency.

3. though the applicant also expects adopting the AC servo controller to add the structure of permanent-magnet brushless DC electric machine, but Zheng Ti cost is higher like this, if an AC servo controller drives a permanent-magnet brushless DC electric machine, be 200 yuan of calculating with both costs, the cost of its single product just needs 400 yuan, increased product cost greatly, and low more its cost increase of product of body cost is obvious more.Therefore, those skilled in the art also the same with the applicant think always can't implement this technology on the mobile type electric tool.

[summary of the invention]

The purpose of this utility model solves the problems of the prior art exactly, propose a kind of power source and adopt the mobile type electric tool of this power source, use the mobile type electric tool long service life of this power source, the control precision height, response can realize brake at a high speed at a high speed.

For achieving the above object, the utility model proposes a kind of mobile type electric tool that adopts novel power source, power source and at least two tool bodies of comprising split, have at least two output ports on the power source, tool body is connected on the output port, described power source adopts the AC servo controller, and the input of power source is powered by electric main, adopts permanent-magnet brushless DC electric machine on the tool body.

As preferably, have 4 output ports on the power source, can connect a tool body on each output port.

As preferably, have 5 output ports on the power source, can connect a tool body on each output port.

As preferably, have 6 output ports on the power source, can connect a tool body on each output port.

As preferably, described AC servo controller comprises control board and power amplifier board, comprises digital signal processing chip and programmable logic chip on the control board, in conjunction with digital circuit and software control, produce the high-frequency impulse modulator control signal, after the power amplifier board power amplification, output to each output port.

As preferably, described permanent-magnet brushless DC electric machine comprises electronic switching circuit, rotor position detection circuit and motor body, and described electronic switching circuit, motor body, rotor position detection circuit constitute the closed-loop path successively.

As preferably, external armature that described motor body is coaxial and inner armature, external armature are stator or rotor, and inner armature is corresponding rotor or stator, and rotor is a permanent magnet.

For achieving the above object, the utility model has also proposed a kind of power source, has at least two output ports on the power source, but fastening means body on the output port, described power source adopts the AC servo controller, and the input of power source is powered by electric main.

As preferably, have 4 or 5 or 6 output ports on the power source, can connect a tool body on each output port.

The beneficial effects of the utility model: 1. the utility model adopts the AC servo controller as power source, adopts permanent-magnet brushless DC electric machine on the tool body, adopts electronic commutation to replace original mechanical commutator, has improved the useful life of instrument greatly.Adopt accurate two closed-loop control, more energy-conservation than series machine, safer, more flexible, noiseless in the course of work to other equipment.Can realize accurately brake at a high speed.2. after the utility model separated power source and tool body, the workman only need hand that weight is light, the less tool body of volume just can be worked, and greatly reduces working strength of workers, has alleviated work fatigue, has improved operating efficiency.Adopt plug-in type can realize longer-distance operation, made things convenient for use.3. the utility model has overcome the technology prejudice of this area, the AC servo controller is combined application with permanent-magnet brushless DC electric machine, adopt an AC servo controller to drive the technical scheme of a plurality of permanent-magnet brushless DC electric machines, solved the high problem of cost, the AC servo controller is applied on this series products becomes possibility.Having expanded its range of application greatly, promoted the development of mobile type electric tool industry, is the revolutionary change to the sector.

Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.

[description of drawings]

Fig. 1 is a structural representation of the present utility model.

[embodiment]

As shown in Figure 1, adopt the mobile type electric tool of novel power source, comprise the power source 2 of split and the tool body 1 of at least two mobile type electric tools, have at least two output ports 21 on the power source 2, but tool body 1 socket connection is to output port 21, described power source 2 adopts the AC servo controller, and the input of power source 2 is powered by electric main, adopts permanent-magnet brushless DC electric machine on the tool body 1.Have 4 or 5 or 6 output ports 21 on the power source 2, can connect a tool body 1 on each output port 21.

Described AC servo controller comprises control board and power amplifier board, comprise digital signal processing chip and programmable logic chip on the control board, in conjunction with digital circuit and software control, produce the high-frequency impulse modulator control signal, after the power amplifier board power amplification, output to each output port 21.This AC servo controller can adopt disclosed servo-driver in the CN1549441A patent.

Described permanent-magnet brushless DC electric machine comprises electronic switching circuit, rotor position detection circuit and motor body, and described electronic switching circuit, motor body, rotor position detection circuit constitute the closed-loop path successively.External armature that described motor body is coaxial and inner armature, external armature are stator or rotor, and inner armature is corresponding rotor or stator, and rotor is a permanent magnet.It is the power-up sequence and the time of each phase winding of control motor body stator that electronic switching circuit mainly acts on, and mainly is made of power tube, drive circuit and rotor-position signal processing module.It is real-time detection rotor position that rotor position detection circuit mainly acts on, for commutation provides foundation.

The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, any scheme after the utility model simple transformation is all belonged to protection range of the present utility model.

Claims

1. adopt the mobile type electric tool of novel power source, it is characterized in that: the power source (2) and at least two tool bodies (1) that comprise split, have at least two output ports (21) on the power source (2), tool body (1) is connected on the output port (21), described power source (2) adopts the AC servo controller, the input of power source (2) is powered by electric main, and tool body (1) is gone up and adopted permanent-magnet brushless DC electric machine.

2. the mobile type electric tool of employing novel power source as claimed in claim 1 is characterized in that: have 4 output ports (21) on the power source (2), can connect a tool body (1) on each output port (21).

3. the mobile type electric tool of employing novel power source as claimed in claim 1 is characterized in that: have 5 output ports (21) on the power source (2), can connect a tool body (1) on each output port (21).

4. the mobile type electric tool of employing novel power source as claimed in claim 1 is characterized in that: have 6 output ports (21) on the power source (2), can connect a tool body (1) on each output port (21).

5. the mobile type electric tool of employing novel power source as claimed in claim 1, it is characterized in that: described AC servo controller comprises control board and power amplifier board, comprise digital signal processing chip and programmable logic chip on the control board, in conjunction with digital circuit and software control, produce the high-frequency impulse modulator control signal, after the power amplifier board power amplification, output to each output port (21).

6. as the mobile type electric tool of any one described employing novel power source in the claim 1 to 5, it is characterized in that: described permanent-magnet brushless DC electric machine comprises electronic switching circuit, rotor position detection circuit and motor body, and described electronic switching circuit, motor body, rotor position detection circuit constitute the closed-loop path successively.

7. the mobile type electric tool of employing novel power source as claimed in claim 6, it is characterized in that: external armature that described motor body is coaxial and inner armature, external armature is stator or rotor, and inner armature is corresponding rotor or stator, and rotor is a permanent magnet.

8. the power source of mobile type electric tool, it is characterized in that: have at least two output ports (21) on the power source, output port (21) but go up fastening means body (1), described power source adopts the AC servo controller, the input of power source is powered by electric main.

9. the power source of mobile type electric tool as claimed in claim 8 is characterized in that: have 4 or 5 or 6 output ports (21) on the power source (2), can connect a tool body (1) on each output port (21).

10. the power source of mobile type electric tool as claimed in claim 8, it is characterized in that: described AC servo controller comprises control board and power amplifier board, comprise digital signal processing chip and programmable logic chip on the control board, in conjunction with digital circuit and software control, produce the high-frequency impulse modulator control signal, after the power amplifier board power amplification, output to each output port (21).