CN206153671U - Electric circular saw with brushless motor controller - Google Patents

Abstract

The utility model relates to an electric circular saw technical field, in particular to electric circular saw with brushless motor controller. The utility model discloses an organism and brushless motor controller, organism include base, head capsule, live movable support and cutting assembly, and brushless motor controller fixed connection is in on the head capsule and with cutting assembly connects, brushless motor controller includes brushless DC motor and defeated entry control mechanism, and defeated entry control mechanism includes power input end, transverter, rotor -position sensor and dc -to -ac converter trigger circuit including power supply unit and the controllor power supply portion that is connected, the utility model discloses in, the controller provides PWM ( pulse width modulation ), through rotor -position sensor response brushless DC motor's the present position of rotor, and the order of opening power transistor in (closing) transverter according to stator wire winding decision, cutting assembly is through the movable support's that lives motion to cut spare part.

Description

A kind of electric circular saw with brushless motor control device

Technical field

The utility model is related to electric circular saw technical field, more particularly to a kind of electricity circle with brushless motor control device Saw.

Background technology

Generally, the electric circular saw of hand-held include a casing, a motor being mounted in casing, one be arranged on casing on Handle, a saw blade being connected with motor, can operating, fixed shield is arranged on casing and covers saw blade Top half, base plate is used to support casing disposed thereon, a movable shield to be pivotably mounted on casing and cover The latter half that firmly saw blade stretches out from base plate.

In prior art, electric circular saw structure is more complicated, and the motor in it is wayward, and cutting efficiency is not high, material Consume many, energy consumption is big, and efficiency is low, noise is big, is easily damaged.

Utility model content

Described above in order to overcome the shortcomings of, the purpose of this utility model is to provide a kind of with brushless motor control device Electric circular saw, its simple structure, comparison is light, and easy to operate, motor control stably facilitates, and energy consumption is little, and cutting efficiency is high.

The technical scheme in the invention for solving the technical problem is：

A kind of electric circular saw with brushless motor control device, wherein, including body and brushless motor control device, it is described Body includes base, head capsule, travel(l)ing rest and cutting assembly, and the travel(l)ing rest is fixedly connected on the base, the head Shell is connected to the travel(l)ing rest by fixed mount, and the cutting assembly is connected on the head capsule, the brushless electric machine control Device is fixedly connected on the head capsule and is connected with the cutting assembly；The brushless motor control device includes brushless direct-current Motor and the input controlling organization being arranged in the brshless DC motor, the input controlling organization includes the power supply being connected Portion and controller, the power supply unit includes power input, transverter, rotor-position sensor and inverter triggers circuit, institute State power input to be connected with transverter, the transverter is connected respectively with the brshless DC motor, inverter triggers circuit, The brshless DC motor is connected with the rotor-position sensor, and the rotor-position sensor and inverter triggering are electric Road connects；The transverter includes upper arm power transistor and underarm power transistor, and the upper arm power transistor is included simultaneously Power transistor Q1, power transistor Q3, the power transistor Q5 of connection connection, the underarm power transistor includes being connected in parallel Power transistor Q2, power transistor Q4, power transistor Q6.

As a kind of improvement of the present utility model, stator, rotor, fan blade, axle are provided with the brshless DC motor and are used Jump ring, gear and output shaft, the controller is connected with the rotor, and the stator is connected with the rotor engagement, described turn Sub to be connected with the fan blade, the main shaft of the rotor connection is connected with the gear, and the gear is blocked by axle with jump ring, institute State gear to be connected with the output shaft.

Used as further improvement of the utility model, the rotor is provided with clutch shaft bearing with the junction of the controller And spring washer, rear wind loop is provided between the clutch shaft bearing and the rotor.

Further improve as of the present utility model, wind loop is provided between the rotor and the fan blade, it is described The main shaft of rotor connection is connected with second bearing, and the two ends of the gear are respectively cooperating with being connected with 3rd bearing and fourth bearing.

Further improve as of the present utility model, the body also includes locking knob, the locking knob and institute State head capsule connection.

Further improve as of the present utility model, on the head capsule handle is provided with.

In the utility model, power input output voltage in input controlling organization changes into three-phase electricity through transverter Press to drive brshless DC motor, transverter that the switch of the coil of brshless DC motor is flowed through as control, controller provides PWM (pulse width modulation), senses the current position of rotor of brshless DC motor, according to stator by rotor-position sensor Coiling determines the order for opening power transistor in (/ closing) transverter；Travel(l)ing rest is fixedly connected on base, and head capsule passes through Fixed mount is connected to travel(l)ing rest, and cutting assembly is connected on head capsule, the motion that cutting assembly passes through travel(l)ing rest, so as to zero Part is cut；The utility model simple structure, comparison is light, and easy to operate, motor control stably facilitates, and energy consumption is little, cuts Cut efficiency high.

Description of the drawings

For ease of explanation, the utility model is described in detail by following preferred embodiments and accompanying drawing.

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

Fig. 2 is the internal structure schematic diagram of brushless motor control device of the present utility model；

Fig. 3 is the annexation figure of input controlling organization of the present utility model；

Reference：1- brushless motor control devices, 11- brshless DC motors, 111- stators, 112- rotors, 113- wind Leaf, 114- axle jump rings, 115- gears, 116- output shafts, 117- clutch shaft bearings, 118- spring washers, wind loop after 119-, 1110- wind loops, 1111- second bearings, 1112- 3rd bearings, 1113- fourth bearings, 12- input controlling organizations, 121- is electric Source portion, 1211- power inputs, 1212- transverters, 1213- rotor-position sensors, 1214- inverter triggers circuits, 122- Controller, 2- bodies, 21- bases, 22- head capsules, 23- travel(l)ing rests, 24- cutting assemblies, 25- locking knobs, 26- handles.

Specific embodiment

In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only to explain The utility model, is not used to limit the utility model.

As shown in Figure 1, Figure 2 and Figure 3, a kind of electric circular saw with brushless motor control device of the present utility model includes machine Body 2 and brushless motor control device 1.

Body 2 includes base 21, head capsule 22, travel(l)ing rest 23 and cutting assembly 24, and travel(l)ing rest 23 is fixedly connected on bottom On seat 21, head capsule 22 is connected to travel(l)ing rest 23 by fixed mount, and cutting assembly 24 is connected on head capsule 22.

Brushless motor control device 1 is fixedly connected on head capsule 22 and is connected with cutting assembly 24；Brushless electric machine control dress Putting 1 includes brshless DC motor 11 and the input controlling organization 12 being arranged in brshless DC motor 11, is input into controlling organization 12 Including the power supply unit 121 and controller 122 that are connected, power supply unit 121 includes power input 1211, transverter 1212, rotor Position sensor 1213 and inverter triggers circuit 1214, power input 1211 is connected with transverter 1212, transverter 1212 It is connected with brshless DC motor 11, inverter triggers circuit 1214 respectively, brshless DC motor 1 and rotor-position sensor 1213 Connection, rotor-position sensor 1213 is connected with inverter triggers circuit 1214.

Transverter 1212 includes upper arm power transistor and underarm power transistor, and upper arm power transistor includes in parallel company Power transistor Q1, power transistor Q3, the power transistor Q5 for connecing, the underarm power transistor includes the work(being connected in parallel Rate transistor Q2, power transistor Q4, power transistor Q6.

In the utility model, the output voltage of power input 1211 in input controlling organization 12, through transverter 1212 Change into three-phase voltage to drive brshless DC motor 11, transverter 1212 that the coil of brshless DC motor 11 is flowed through as control Switch, controller 122 provides PWM (pulse width modulation), and by rotor-position sensor 1213 brshless DC motor 11 is sensed The current position of rotor, the order for opening power transistor in (/ close) transverter is determined according to stator winding；Activity Frame 23 is fixedly connected on base 21, and head capsule 22 is connected to travel(l)ing rest 23 by fixed mount, and cutting assembly 24 is connected to head capsule On 22, the motion that cutting assembly 24 passes through travel(l)ing rest 23, so as to cut to parts.

Further, stator 111, rotor 112, fan blade 113, axle jump ring 114, gear are provided with brshless DC motor 1 115 and output shaft 116, controller 122 is connected with rotor 112, and stator 111 is connected with rotor 112, rotor 112 and fan blade 113 connection, rotor 112 connection main shaft be connected with gear 115, gear 115 is blocked by axle jump ring 114, gear 115 with it is defeated Shaft 116 is connected, and rotor 112 is rotated around stator 111, and gear 115 is stuck in brshless DC motor by axle jump ring 114 In 11, output shaft 116 is driven to export power by gear 115.

Rotor 112 is provided with clutch shaft bearing 117 and spring washer 118, clutch shaft bearing 117 with the junction of controller 122 Be provided with rear wind loop 119 between rotor 112, clutch shaft bearing 117 is used for fixed rotation, spring washer 118 be used for closing and Protective effect, rear wind loop 119 is used for closed protective.

Further, wind loop 1110 is provided between rotor 112 and fan blade 113, the main shaft of the connection of rotor 112 is connected with Second bearing 1111, the two ends of gear 115 are respectively cooperating with being connected with 3rd bearing 1112 and fourth bearing 1113,3rd bearing 1112 and fourth bearing 1113 can preferably fix swing pinion 115.

Preferably, body 2 also includes locking knob 25, locking knob 25 is connected with head capsule 22, so that head capsule 22 can With with locking function.

Further, handle is provided with head capsule 22, it is convenient to hold.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (6)

1. a kind of electric circular saw with brushless motor control device, it is characterised in that including body and brushless motor control device, The body includes base, head capsule, travel(l)ing rest and cutting assembly, and the travel(l)ing rest is fixedly connected on the base, institute State head capsule and the travel(l)ing rest is connected to by fixed mount, the cutting assembly is connected on the head capsule, the brushless electric machine Control device is fixedly connected on the head capsule and is connected with the cutting assembly；The brushless motor control device includes brushless Direct current generator and the input controlling organization being arranged in the brshless DC motor, the input controlling organization includes what is be connected Power supply unit and controller, the power supply unit includes power input, transverter, rotor-position sensor and inverter triggering electricity Road, the power input is connected with transverter, the transverter respectively with the brshless DC motor, inverter triggers circuit Connection, the brshless DC motor is connected with the rotor-position sensor, the rotor-position sensor and the inverter Triggers circuit connects；The transverter includes upper arm power transistor and underarm power transistor, the upper arm power transistor Including the power transistor Q1, power transistor Q3, the power transistor Q5 that are connected in parallel, the underarm power transistor is included simultaneously Power transistor Q2, power transistor Q4, the power transistor Q6 of connection connection.

2. a kind of electric circular saw with brushless motor control device according to claim 1, it is characterised in that described brushless Stator, rotor, fan blade, axle jump ring, gear and output shaft are provided with direct current generator, the controller connects with the rotor Connect, the stator is connected with the rotor engagement, the rotor is connected with the fan blade, the main shaft of rotor connection with it is described Gear connects, and the gear is blocked by axle with jump ring, and the gear is connected with the output shaft.

3. a kind of electric circular saw with brushless motor control device according to claim 2, it is characterised in that the rotor The junction of the controller is provided with clutch shaft bearing and spring washer, is provided between the clutch shaft bearing and the rotor Wind loop afterwards.

4. a kind of electric circular saw with brushless motor control device according to claim 3, it is characterised in that the rotor Wind loop is provided between the fan blade, the main shaft of the rotor connection is connected with second bearing, the two ends point of the gear It is not connected with 3rd bearing and fourth bearing.

5. a kind of electric circular saw with brushless motor control device according to claim 4, it is characterised in that the body Also include locking knob, the locking knob is connected with the head capsule.

6. a kind of electric circular saw with brushless motor control device according to claim 5, it is characterised in that the head capsule On be provided with handle.