TWM355153U - Gas nailing gun with bipolar driving and phase-changing sensor in brushless fan motor - Google Patents

Description

M355153 Eight, new description: [New technology field] This creation is about a gas nail grab, sexual drive and commutation sensor brushless 9 kinds of bipolar [prior art], fan-like motor gas nail grab. More and more people like to do their own hands, and the gas nails are often used to make the _ workers f farmer gas nails mostly use brush motor, the basin has early carbon brushes easy to wear, and the second is very easy to produce: : Two of them - is to solve these two major shortcomings, and the j is dangerous, and the gun. r use the brushless motor gas nails Tenhua Republic patent number M3G1111, for: i horse's motor is single-phase unipolar:: use, but a moving way 'inversion ==== direction, so the use of winding The rate is not high. The electric power has the early type of change 2 people above M3 (the shortcoming of mn number, proposed another power tool fan motor structure, in which f is a kind of motor, no use of I type - ':,, one phase..., brush winding The residual shoulder is electrically heated to the phase sensor, and the electrical position is changed. Although the winding is not inductively long, and the motor structure is activated at the start, the motor starts to enter the synchronous machine. M355153 = Sweep only according to the synchronous excitation frequency, commutation and = (4): The reversal phenomenon occurs, and it is necessary to go to the - fixed speed to normal commutation, so the rise time is at risk of / positive suspension failure. ★ 4 generate (four) firing needle The sub-edge is this I] is the person who feels the above-mentioned lack of potential change: research and the use of the theory, finally put forward = and effectively improve the above-mentioned lack of creation. Also in the mouth [new content] In view of the above problems, this The main purpose of the creation is to provide a brushless wind turbine with bipolar drive and commutation sensor to improve the utilization of the motor winding, reduce the rise of the motor = nail length: stability and safety. In order to achieve the above purpose, The creation department provides a gas nail with a polarity-driven and commutating sensor brushless fan motor: a nail gun body, the nail body includes a combustion chamber and a motor fan disposed in the combustion chamber; a brushless motor, the motor is disposed in the nail grab body, the single-phase brushless motor package: a stator, a rotor, a winding, and a single-phase motor drive circuit, the rotor and the stator have a gap, the motor fan is coupled to the rotor, the single-phase motor drive circuit includes two parallel circuits, the winding is coupled to the two circuits, and each of the circuits has a series switch; and - a commutation sensor The commutation sensor _ is used in the single-phase motor driving circuit, the commutation sensor is configured to detect the position of the rotor and output an electrical signal, and the single-phase motor driving circuit is only used to read the electrical signal to control Each switch. M355153 The present invention also provides a gas-tight nailing of a bipolar-driven fan motor, including: the "_ phase sensor includes a combustion chamber and a #f in the brushless body, and the nail grabs the body f-phase brushless motor. The three In the brushless motor Yang, the three-phase brushless motor comprises a winding and a r: phase, derotating, two and right gate gap 4 circuits, and the rotor and the stator are connected to the rotor The three-phase motor drive circuit includes three parallel circuits.

The circuit 'and each of the circuits has two strings: two commutating sensors connected to the three-phase motor: the detector is used to detect the position of the rotor and to control each of the _. The motor (4) circuit is used to interpret the electrical signal. The creation of the present invention has the following beneficial effects: since the gas is dry and fresh (4), the motor is driven by a bipolar motor, and thus, the winding of the brushless motor, & No /, 疋 single direction, so the winding usage rate: the rise time is shorter, so you can instantly generate enough burst: force to avoid the risk of nail failure. [Embodiment] As shown in the first to third figures, the author provides a kind of gas drive needle with a sexual drive and a change (four) detector without a fan. ^ - Nail grab the body 1, a single phase brushless The motor 2 and a phase change sensor 3 'the nail body 1 includes a head 1i and a grip portion 12 connected to the head W 1 , and the head 1 1 is provided with a 7 M355153 one cylinder 1 1 1 'The cylinder 1 1 1 is provided with a piston 1 1 2 and a striker i丄3 axially connected to the piston 1 1 2 , and a piston 1 1 4 and a piston are disposed behind the piston 1 1 2 A motor fan 1 15 is disposed in the combustion chamber 1 14 . The single-phase brushless motor 2 is disposed in the head 11 and connected to the motor fan 丄丄5. The external air is drawn into the combustion chamber through the motor fan 1 15 , and the combustion chamber 1 1 4 The gas in the gas is thoroughly mixed, and then an internal ignition device (not shown) ignites to generate an explosive force, so that the piston

1 1 2 Reciprocating impact and hitting the needle χ χ 3 will send out the nail body (not shown) ^. The single-phase brushless motor 2 comprises a stator 2 1 , a rotor 2 2 , a winding 2 3 wound on the stator 2 , and a single-phase motor drive circuit 24 4 ' wherein the rotor 2 2 is a permanent magnet, the rotor There is a gap between the stator 2 and the stator 21, and the motor fan 5 is connected to the rotor 22. Since the ratio of the number of winding slots of the single-phase brushless motor 2 to the number of magnetic poles of the rotor 2 2 must be 1:1, in the present embodiment, the single-phase brushless motor 2 is a 4-slot 4-pole structure. In the absence of 2 slots 2 poles ^ 6 poles, 8 slots and 8 poles and other structures can also be used in this creation. The single-phase motor driving circuit 24 includes a first circuit 2 4 1 , a second circuit 2 4 2 and a single-phase switch control module 2 4 3 , and the first circuit 2 4 丄 and the second circuit 24 2 in parallel, the two ends of the winding 2 3 are coupled to the first circuit 2 4 i and the second back = 4 2: the first circuit 241 has two switches in series and the second circuit 2 4 2 has two A series of switches S3, in which switch S1 and switch S3gp type field effect transistor, and M355153 two and switch S4 are N-type field effect transistor ' and switch s ^ switch S3, switch S4 and diode m respectively , dipole Wei, ^ body D3, diode D4 in parallel, wherein the anode and cathode of the diode (1) and the diode 3 are respectively consumed by the opening and the switching %: and the pole and the source, and the pole The body D2 and the diode D4 are connected to the source S2 and the switch S4 and the drain switch Sh S2, S3, and S4 are connected to the control module 243. Dry-reverse phase sensor 3_ threatening the single-phase _ control module ^ = commutation sensor 3 can use Hall element, magnetoresistive element or light The commutation sensor 3 is responsible for detecting the rotor 2 2 = = a signal, let the single-phase switch control module 243 interpret the signal to turn on or off the current flow of each of the switches si, s2, magic winding 23, there are two cases, one of the = = Air system module 2 4 3 respectively rotates the voltage signal to two = ^S3, S4, so that switch S1 and switch S4 are closed: and switch S2 and switch S3 are open, at this time the current is flowing from winding terminal 2 at winding terminal b , and the second kind of a day is recognized, then the switch is controlled by the early phase switch, and the 2 4 3′′ output is not connected to the _... S4, so that the switch S1 and the switch S4 and ^ ^ are switched. S2 and the switch are turned off, the current flows from the winding terminal b to the winding terminal, and the current is commutated. In addition, when '1' or S4M is turned on, 'current does not flow through the switch (8)... :3 and will flow through the diode (D1, D2, D3, 4), grab the internal battery, so: 4) and return to The gas is nailed to avoid the switch (SI, S2, S3 or 9 M355153 S4) being burnt due to current surges. As shown in the fourth figure, the switches SI, S2, S3, and S4 are Bipolar Junction Transistors, wherein the switches s Γ and S3' are PNP type bipolar transistors. The switch S2 and the switch S4' are NPN type double carrier transistors, wherein the anode and the cathode of the diode D1 and the diode D3 are coupled to the collector of the switch si and the switch S3, respectively. The anode and the cathode of the diode D2 and the diode D4 are respectively coupled to the emitter and the collector of the switch S2 and the switch S4, and the bases of the switches Sr, S2', S3', and S4' are connected to The single-phase switch control module 2 4 3 ' uses a dual-phase transistor single-phase motor drive circuit 24 4 'its switches 81, 82, 83, 84, and the operation of the field effect transistor The work situation is the same. Single-phase brushless motor 2 uses a Field Effect Transistor and a bipolar transistor (Bip〇lar Juncti〇n)

In addition to Transistor), an insulated gate bipolar transistor can be used as a current switch. The reason is that the gate insulated bipolar transistor has the high input impedance of the field effect transistor and the double carrier power. The advantage of the crystal's current drive force. As shown in the fifth to seventh figures, the gas-impacting fan of the bipolar driving and commutating sensor brushless fan motor comprises three commutating sensors 3 and a three-phase brushless motor 4, the three-phase The brushless motor 4 includes a stator 41, a rotor 42, three pairs of windings 43A, 43B, 4 3 C and a three-phase motor drive circuit 44, wherein the rotor 42 is a permanent magnet 'the rotor 42 and the stator 4 One has a gap, and the stator 4 1 is provided with six winding portions 4 2 1 , 4 2 10 M355153 2, 423, 424, 425, 426. The two-phase motor driving circuit 44 includes a first circuit 4 4 ^, a second circuit 4 4 2, a third circuit 4 4 3 and a two-phase switch control module 4 4 4 , the first circuit 4 4 1. The first circuit 4 4 2 and the third circuit 4 4 3 are connected in parallel. The pair of windings 4 3A are wound around the winding portions 4 2 1 and 4 2 4, and the pair of windings 4 3 B are wound around the winding portions 4 2 2 and 4 2 5 , and the pair of windings 4 3 C are wound around & Wherein the three pairs of windings 43 A 4 3 B, 4 3 C each have a tap connected to a common center 1 point η, and the other two taps a, B ' c are coupled to the first loop 441, A second loop 442 and a third loop 443. Since the ratio of the number of winding slots of the two-phase brushless motor 4 to the number of rotor poles can be 3:2, 3:4 or 9:8, in the present embodiment, the three-phase brushless motor 4 is 6 The structure of the slot 4 pole, when the slot 2 pole, 6 slot 8 pole '3 slot 4 pole or 9 slot 8 pole and other architecture can also be used in this creation. The first circuit 441 has two switches swi, SW2 connected in series, the second circuit 4 4 2 has two switches s in series, SW4 ' and the second circuit 4 4 3 has two switches SW5, SW6 connected in series 'Where the switch SW1, the switch and the switch_ are p-type field effect transistors, and the switch SW2, the switch SW4 and the switch SW6 are] Si type % effect transistors, and the switch swi, the switch, the switch SW3, the switch SW4, the switch SW5 The switch is hidden in parallel with the diode D, the diode D2, the diode D3, the diode d4, the diode D5, and the diode D6. The anode and cathode of the diode di, the diode d3 and the diode D5 are purely switch, open 11 M355153 off SW3 and switch SW5 drain and source, and diode ο], diode The anode and the cathode of the D4 and the diode D6 are respectively coupled to the source and the drain of the switch SW2, the switch SW4, and the switch SW6, and the gates of the switches SW1, SW2, SW3, SW4, SW5, and SW6 are connected to the gate Three-phase switch control module 4 4 4. The β-phase commutation sensor 3 is connected to the two-phase switch control module 4 4 4 'The commutation sensor 3 can use a Hall element, a magnetoresistive element or an optical sensor, and the commutation The sensor 3 is responsible for detecting the position of the rotor 42 and transmitting the detected data to the three-phase switch control module 4 4 4 in the form of an electrical signal. The three-phase switch control module 4 4 4 interprets the After the electrical signal, each of the switches swi, SW2, SW3, SW4, SW5, SW6 can be turned on or off. There are various combinations of winding current flow directions of the three-phase brushless motor 4. Some combinations are listed: (1) The switch SW1 and the switch SW6 are closed, and the switches SW2, SW3, SW4, and SW5 are all turned on, and the current flows from the winding terminal Α to the winding terminal C. . (2) The switch SW3 and the switch SW6 are turned off, and the switches SW1, SW2, SW4, and SW5 are all turned on, and the current flows from the winding terminal B to the winding terminal C. (3) The switch SW2 and the switch SW3 are turned off, and the switches SW1, SW4, SW5, and SW6 are all turned on, and the current flows from the winding terminal B to the winding terminal A. (4) The switch SW2 and the switch SW5 are turned off, and the switches SW1, SW3, SW4, and SW6 are all turned on, and the current flows from the winding terminal C to the terminal A of the 12 M3551.53 group. (5) The switch SW4 and the switch SW5 are turned off, and the switches ·, SW2, SW3, and SW6 are all turned on, and the current flows from the winding terminal c to the winding terminal B. (6) The switch SW1 and the switch SW4 are turned off, and the switches sw2, SW3, SW5, and SW6 are all turned on, and the current flows from the winding terminal a to the winding terminal B. As shown in the eighth figure, the switches SW1, SW2, SW3, SW4, SW5, and SW6 are bipolar transistors [Transistor], wherein the switch SW1, the switch SW3, and the switch sw5 are shown. , is a PNP type double carrier transistor, and the switch SW2, the switch 4, and the switch SW6 are NPN type double carrier transistors, wherein the diode di, the diode D3, and the diode D5 "anode and The cathode is respectively connected to the collector and the emitter of the switch SW1', the switch SW3' and the switch SW5, and the anode and the cathode of the diode D2, the diode D4 and the diode D6 are respectively connected to the switch SW2' and the switch SW4. And the switch SW6, the emitter is coupled to the collector, and the bases of the switches SW1, SW2, SW3, SW4, SW5', SW6' are electrically connected to the three-phase switch control module bucket 4 4. The operation of the three-phase motor drive circuit 44 using the bipolar transistor is the same as that of the field effect transistor. The three-phase brushless motor 4 uses a Field Effect Transistor and a bipolar transistor (Bip〇lar Juncti〇n).

In addition to the Transistor), a gated insulated bipolar transistor (Insulated Gate Bipolar Transistor) can be used as the current switch. 13 M3551.53 This product has the dual-polar drive and commutation sensor brushless fan motor gas spike, which has the following advantages: 1. Single-phase brushless motor 2 and three-phase brushless motor 4 have no spark when rotating 'There is no problem of carbon brush wear, improving the qualitative and safety of gas nails. ~

2. The single-phase brushless motor 2 and the three-phase brushless motor 4 are bipolar driving modes, so that the current on the windings (2 3, 4 3) is not only in one direction, but also in the windings (2 3, 4 3 ). Utilization rate. 3. Detecting the position 2' of the rotor (2 2, 4 2) by the commutation sensor 3 compared to the induced electromotive force by the winding (2 3 ' 43) (2 2, 4 2 In terms of position, the commutation is smoother, so the upper temple is relatively short, so it can generate explosive force and avoid the risk of initial nailing failure. On the above

ρ 1 is the best embodiment of the creation of the two and the application of the direct ^ ^ ^ to limit the scope of the implementation of this creation, that is, the scope of the equal scope of the patent declaration. And the decoration is the original creation. [The simple description of the figure] The first picture is the creation of the gas nail. The second picture is the plan view of the single-phase brushless. Sectional view. The stator, rotor and winding of the motor The second picture shows the road diagram of the single-phase motor. The fourth embodiment of the driving circuit is the fourth phase diagram of the creation. The motor of the second embodiment of the motor drive circuit 14 M355153 The stator of the two-wire brushless motor,

The fifth picture of the brother is the flat display of the creative two-person sensor. The sixth picture is the road map of the creation of the younger brother. The eighth picture is the road map for creation. [Main component symbol description] Nail grab body 1 Head 1 1 Cylinder 1 1 1 Piston 1 1 2 Strike pin 1 1 3 Combustion chamber 114 Motor fan 1 1 5 Grip part 1 2 Single-phase brushless motor 2 Stator 2 1 Rotor 2 2 Winding 2 3 Single-phase motor drive circuit 2 4 First circuit 2 4 1 Second circuit 2 4 2 Single-phase switch control module 2 4 3 Commutation sensor 3 15 M355153

Three-phase brushless motor 4 stator 4 1 rotor 4 2 winding portion 4 2 1 winding portion 4 2 2 winding portion 4 2 3 winding portion 4 2 4 winding portion 4 2 5 winding portion 4 2 6 winding 4 3 A winding 4 3 B Winding 4 3 C Three-phase motor drive circuit 4 4 First circuit 4 4 1 Second circuit 4 4 2 Third circuit 4 4 3 Three-phase switch control module 4 4 4 Switch S1 Switch S2 Switch S3 Switch S4 Dipole D1 Diode D2 16 M355153 Diode D3 Diode D4 Diode D5 Diode D6 Switch S1' Switch S2' Switch S3' Switch S4' Switch SW1 Switch SW2 Switch SW3 Switch SW4 Switch SW5 Switch SW6 Switch SW1' Switch SW2' switch SW3' ·' switch SW4' • switch SW5' switch SW6' 17

Claims (1)

M355153 IX. Patent application scope: 1. A gas nail gun with a bipolar drive and a commutation sensor brushless fan motor, comprising: a nail gun body, the nail gun body comprises a combustion chamber and a a motor fan in the combustion chamber; a single-phase brushless motor, the single-phase brushless motor is disposed in the nail gun body, the single-phase brushless motor includes a stator, a rotor, more than one winding, and a single-phase motor drive a circuit having a gap between the rotor and the stator, the motor fan being coupled to the rotor, the single-phase motor drive circuit comprising two parallel circuits, the winding being coupled to the two circuits, and each of the circuits has two series And a commutation sensor coupled to the single-phase motor drive circuit, the commutation sensor is configured to detect a position of the rotor and output an electrical signal, the single-phase motor The driving circuit is configured to interpret the electrical signal to control each of the switches. 2. A gas nail gun having a bipolar drive and a commutating sensor brushless fan motor as described in claim 1 wherein each switch is connected in parallel with a diode. 3. A gas nail gun having a bipolar drive and a commutation sensor brushless fan motor as described in claim 2, wherein the switches are Field Effect Transistors, the single phase motor The driving circuit further includes a single-phase switching control module, and the single-phase switching control module is coupled to the switches. 18 M355153 4. A gas nail gun with a bipolar drive and a commutation sensor brushless fan motor as described in claim 3, wherein the second circuit has a p-type field effect transistor and an N-type The field effect transistor, wherein the anode and the cathode of the two diodes are respectively coupled to the drain and the source of the two p-type field effect transistors, and the anode and the cathode of the other two diodes are coupled to the anode and the cathode respectively The source and the drain of the two N-type field effect transistors, and the gates of the p-type field effect transistors and the N-type field effect transistors are electrically connected to the single-phase switch control module. 5. A gas nail gun having a bipolar drive and a commutating sensor brushless fan motor as described in claim 2, wherein the switches are Bipolar Junction Transistors. 6. The gas nailing of a brushless fan motor having a bipolar drive and a commutation sensor as described in claim 5, wherein the second circuit has a PNP type double carrier transistor and an NPN type double The carrier transistor 'the anode and the cathode of the two diodes are respectively coupled to the collector and the emitter of each of the PNP-type bipolar transistor, and the anode and the cathode of the other two diodes are respectively The emitter of the NPN-type bipolar transistor is coupled to the collector, and the base of each of the NPN-type bipolar transistor and each of the PNP-type bipolar transistors is electrically connected to the single-phase switching control module. 7. A gas nail gun having a bipolar drive and a commutating sensor brushless fan motor as described in claim 2, wherein the switches are Insulated Gate Bipolar Transistors. 19 M355153 8. A gas nail gun having a bipolar drive and a commutation sensor brushless fan motor according to claim 1, wherein the commutation sensor is a Hall element, a magnetoresistive element or an optical Sensor. 9. A gas nail gun having a bipolar drive and a commutating sensor brushless fan motor as described in claim 1 wherein the single phase brushless motor is a 4-slot 4-pole architecture. 10. A gas nail gun having a bipolar drive and a commutating sensor brushless fan motor as described in claim 1, wherein the single phase brushless motor is a 2-slot 2-pole structure. 1 1. A gas nail gun having a bipolar drive and a commutating sensor brushless fan motor as described in claim 1, wherein the single phase brushless motor is a 6-slot and 6-pole structure. 2. A gas nail gun having a bipolar drive and a commutating sensor brushless fan motor as described in claim 1 wherein the single phase brushless motor is an 8-slot 8-pole structure. 1 . A gas nail gun having a bipolar drive and a commutation sensor brushless fan motor, comprising: a nail grab body, the nail gun body comprising a combustion chamber and a motor fan disposed in the combustion chamber; a three-phase brushless motor, the three-phase brushless motor is disposed in the nail grab body. The three-phase brushless motor includes a stator, a rotor, three windings, and a three-phase motor drive circuit, the rotor and the stator With a gap between the motor and the rotor, the three-phase motor drive circuit includes three parallel circuits, the windings are coupled to the circuits, and each of the circuits has two 20 M355153 series switches; The commutation sensors are coupled to the three-phase motor driving circuit, and the commutation sensors are configured to detect the position of the rotor and output a signal, the three-phase motor driving circuit It is used to interpret the electrical signal to control each switch. 1 4. A gas needle with a bipolar drive and a commutating sensor brushless fan motor as described in claim 3, wherein each switch is connected in parallel with a diode. Spring 1 5, as described in claim 4, the gas-impacting of a brushless fan motor with a bipolar drive and a commutation sensor, wherein the switches are Field Effect Transistors, The three-phase motor drive circuit further includes a three-phase switch control module, and the three-phase switch control module is coupled to the switches. [6] The gas nailing of a brushless fan motor having a bipolar drive and a commutation sensor as described in claim 15 of the patent application, wherein each of the circuits has a P-type field effect transistor and an N-type. The field effect transistor body, wherein the anode and the cathode of the three diodes are respectively coupled to the drain and the source of each of the P-type field effect transistors, and the anode and cathode of the other three diodes are coupled Connected to the source and the drain of each of the N-type field effect transistors, the gates of the P-type field effect transistors and the N-type field effect transistors are electrically connected to the three-phase switch control module. 1 7. A gas spike with a bipolar drive and a commutation sensor brushless fan motor as described in claim 14 of the patent application, wherein the switches are Bipolar Junction Transistors. 21 M355153 1 8. A gas nail gun having a bipolar drive and a commutation sensor brushless fan motor as described in claim 17 wherein each of the circuits has a PNP type dual carrier transistor and An NPN type bipolar transistor, wherein the anode and the cathode of the three diodes are respectively coupled to the collector and the emitter of the PNP type bipolar transistor, and the anode and cathode of the other three diodes are respectively The emitter and the collector of each of the NPN-type bipolar transistor are coupled, and the base of each of the NPN-type bipolar transistor and the PNP-type bipolar transistor is electrically connected to the three-phase switch control module . 1 9. A gas spike with a bipolar drive and a commutating sensor brushless fan motor as described in claim 14 of the patent application, wherein the switches are gate insulated bipolar transistors (Insulated Gate Bipolar Transistor) ). A gas-filled nail gun having a bipolar drive and a commutation sensor brushless fan motor as described in claim 13 of the patent application, wherein the commutation sensors are Hall elements, magnetoresistive elements or Optical sensor. 2 1. A gas nail gun having a bipolar drive and a commutation sensor brushless fan motor according to claim 13 of the patent application scope, wherein the number of winding slots of the three-phase brushless motor is proportional to the number of rotor poles 3:2. 2 2. The gas nailing of the brushless fan motor with bipolar drive and commutation sensor as described in claim 13 of the patent scope, wherein the ratio of the number of winding slots to the number of rotor poles of the three-phase brushless motor is 3:4. 2 3. The gas nailing of the brushless fan motor with bipolar driving and commutation sensor as described in claim 13 of the patent application scope, wherein the ratio of the number of winding slots to the number of rotor poles of the three-phase brushless motor is 9:8. twenty two