CN109596153A - Numerical indexes driving element with USB interface - Google Patents

Numerical indexes driving element with USB interface Download PDF

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Publication number
CN109596153A
CN109596153A CN201811577498.2A CN201811577498A CN109596153A CN 109596153 A CN109596153 A CN 109596153A CN 201811577498 A CN201811577498 A CN 201811577498A CN 109596153 A CN109596153 A CN 109596153A
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CN
China
Prior art keywords
usb
circuit board
pcb circuit
shell
rotation axis
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Withdrawn
Application number
CN201811577498.2A
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Chinese (zh)
Inventor
彭希南
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Individual
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Individual
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Priority to CN201811577498.2A priority Critical patent/CN109596153A/en
Publication of CN109596153A publication Critical patent/CN109596153A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D13/00Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • G01D13/22Pointers, e.g. settable pointer
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K11/00Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30Structural association with control circuits or drive circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K37/00Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K37/00Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/24Structural association with auxiliary mechanical devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P8/00Arrangements for controlling dynamo-electric motors rotating step by step

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

Numerical indexes driving element with USB interface, including shell, cap, instrument stepper motor ontology, PCB circuit board, ARM chip, micro-stepping Multi-level microstep chip, usb socket, USB transceiver controller L, USB transceiver controller J, freewheeling diode, it is characterized by: in the space surrounded with shell and cap, using PCB circuit board as demarcation plate, it is integrated with electronic component and control logic circuit on one side, another side then includes instrument stepper motor body part, dexterously realize its Topology connection, interface logic very simple, only one output pointer and two usb sockets, to become pass spy's device of a numerical indexes driving by USB control, support plug and play, it can be widely applied to all kinds of Portable pointer class digital instruments with USB interface Table.

Description

Numerical indexes driving element with USB interface
Technical field
The present invention relates to the numerical indexes driving elements with USB interface, specifically, belong to a digitizing pointer driving Crucial particular device, be mainly used in all kinds of portable digital pointer meters, networking Novel medical instrument and meter and Industrial automation control appliance.
Background technique
For a long time, pointer instrument is all using the analog meter of electromagnetic torque driving pointer, using balance spring as damping Component, output pointer driving force drives the pointer in rotation axis, the dynamic sense of this kind of simulated pointer instrument in a manner of moving magnetic filed By force, clear and intuitive, and have the effect of that pointer smoothly moves, meet the reading habit of people, so showing in LED and LCD Today of device prevalence, instrument is using pointer indicating mode still deeply by the welcome of industry.But, the generally existing finger of analog meter pointer The disadvantages of showing low precision, poor linearity, high failure rate, short service life.
How the digitlization of simulated pointer class instrument is realized, this problem had once perplexed engineering technological for many years, mainly There are problems that following two: first is that damped part, using fragile balance spring, balance spring is not only afraid of to shake but also be afraid of dust, everlasting rear machine Tool abrasion has an effect on precision, and the Repeatability of reading is caused to be deteriorated;Second is that the position of simulated pointer is synthesizing by electromagnetic torque The problem of magnetic field determines, working principle and assembly technology lead to inadequate natural endowment, poor linearity is difficult to solve.
The release of stepping motor for meter is so that the digitizing pointer of instrument is readily solved, firstly, stepping motor for meter Fragile damped part is eliminated, second is that the intrinsic step angle of stepping motor for meter is a constant, to ensure that whole Indexing in a indicating range is uniform, and the linearity is good.Importantly, the numerical indexes instrument driven using stepping motor for meter Table average durability is more than 80,000 hours, and average life is 5 times of electromagnetic meter or more, and overall cost-effective performance increases, competition It is with the obvious advantage.Currently, shown on vehicle cab speed, revolving speed, oil level, water temperature combination instrument mostly use instrument stepping electric The numerical indexes formula instrument of machine driving.
But, instrument is a digitized electromagnetic drive part, the intrinsic step angle of stepper motor with stepper motor So that pointer occurs significantly shaking under the drive of rotation axis, people feel awkward and uncomfortable when observing, and then occur Micro-stepping segments technology, is quickly ten original halfs by the intrinsic stepper angle fraction of stepper motor, from this use The deflection of the stepper motor driven digital instrument of instrument, pointer is very nearly the same with the throw of pointer of simulated pointer instrument.
With the extensive application of portable apparatus and USB interface, design engineer wishes to change current LCD or LED is aobvious Show the pattern that device rules all the land, designs a digitizing pointer meter movement using USB interface as portable apparatus Indicate indicator, because the digitlization of pointer and the superpower dynamic sense smoothly deflected of pointer, represent one of portable apparatus Indicate clear stream, at least it changes LCD or light-emitting diode display digital display mode consistent for many years, and more meets the reading of people Habit.
The present invention relates to a numerical indexes driving element with USB interface, the instrument that it will disperse originally off the beaten trackly It is dexterously combined together, then matched with stepper motor ontology, micro-stepping sub-driver circuit, embedded-type ARM chip and USB interface The dial for closing different physical quantities may be directly applied to all kinds of portable digital pointer instruments, and need not separately add control logic Or control circuit.
Summary of the invention
Accordingly, the invention proposes a kind of completely new numerical indexes driving element design schemes with USB interface.In specific Hold as follows:
Numerical indexes driving element with USB interface, including shell, cap, instrument stepper motor ontology, PCB circuit board, Point is:
Instrument stepper motor ontology and PCB circuit board are encapsulated in the shell of shell (1) and hexagon shape of hexagon shape It covers in surrounded space, the PCB circuit board is hexagon shape, and Surface Mount is welded with ARM chip, micro-stepping at a surface thereof Multi-level microstep chip, USB transceiver controller L, USB transceiver controller J, freewheeling diode, two usb sockets are also welded to In PCB circuit board;It include instrument stepper motor body part on the another side of PCB circuit board, the portion on two sides in PCB circuit board After part combination, become the numerical indexes driving element with USB interface;
There are following connection relationships for element in the PCB circuit board: ARM chip be core devices, I/O pin with it is micro- The input pin of step pitch Multi-level microstep chip is connected, the output pin of micro-stepping Multi-level microstep chip again with magnet exciting coil pin phase Even, the freewheeling diode magnet exciting coil pins in parallel with two magnet exciting coil packets respectively;
The end DATA+ and DATA- in two USB interfaces is respectively and on USB transceiver controller L and USB transceiver controller J DATA+ with DATA- pin be connected, the transmission (USB_TX0) of USB transceiver controller L and USB transceiver controller J and receive (USB_RX0) pin is connected with two groups of universal serial bus pins of ARM chip respectively again;
The instrument a set of machine with two-phase excitation coil drive, three-level reduction gear built in stepper motor ontology Structure, including iron-core workpiece, magnet exciting coil packet, p-m rotor body A, driven transmission wheel B, driven transmission wheel C and rotation axis driven wheel D, Two rectangle iron core cylinders are respectively symmetrically stretched out on the arm of the iron-core workpiece two sides, two magnet exciting coil packets are inserted into rectangle respectively In iron core cylinder, magnet exciting coil pin is respectively welded in PCB circuit board;
The hole A, the hole C and the hole D are provided on the central axes of the iron-core workpiece, the p-m rotor body A is mounted at the hole A, transmission Driven wheel C is mounted at the hole C, and rotation axis driven wheel D is mounted at the hole D, and wherein the hole site A locating for p-m rotor body A is two The magnetic yoke center that a magnet exciting coil winding is formed, after magnet exciting coil packet is powered, magnetic conductance variation will generate torque, and driving permanent magnetism turns Daughter A rotation;
It is opened on the iron-core workpiece there are four location hole is supported, is inlaid with hollow nylon cylinder body, institute at support location hole The inside for the shell stated is there are four pillar, and when installation, four nylon cylinder bodies on iron-core workpiece are close to PCB circuit board, in shell Connect after four support location holes that four pillars in portion are each passed through on iron-core workpiece with iron-core workpiece;
There are following meshing relations: p-m rotor for three-level reduction gear mechanism in the instrument stepper motor ontology Body A is driving wheel, it and driven transmission wheel B engaged transmission form primary speed-down drive mechanism;Driven transmission wheel B and transmission from Driving wheel C engaged transmission, forms double reduction drive mechanism;Driven transmission wheel C with rotation axis driven wheel D engaged transmission, is formed again Three-level reducing transmission structure;The rotation axis is coaxially connected with rotation axis driven wheel D, when guaranteeing rotation axis driven wheel D rotation Synchronous drive rotation axis;
There are four hollow support cylindrical body on the cap of the hexagon shape, the fixed branch of four be welded in PCB circuit board Column is stretched out from hollow support cylindrical body respectively, for being riveted on the shell of other portable apparatus;
There is an installation step in the corner of the enclosure interior adjacent edge respectively, and there are six caps to install on the cap Hole is opened in the PCB circuit board there are six mounting-positioning holes, and when assembly, the PCB circuit board after element is welded first is placed On the installation step of shell, cap is covered, screw is passed through into the cap mounting hole on cap, the installation in PCB circuit board positions Kong Hou, is connected to an entirety with the installation step on shell respectively, and the rotation axis is stretched from the center rotation axis driven wheel D Out, after the shaft cylindrical body on shell, then with pointer be socketed.
The p-m rotor body A is six toothings, using NdFeB material.
Driven transmission wheel B, the driven wheel C and rotation axis driven wheel D is all made of nylon 66 material.
The rotation axis is stainless pin.
The iron-core workpiece uses the permalloy material for having high magnetic permeability under low-intensity magnetic field.
Two usb sockets support USB2.0 agreement.
Detailed description of the invention
It, below will be to attached drawing needed in the embodiment in order to clearly demonstrate the technical solution of the embodiment of the present invention It is briefly described.It should be pointed out that the so-called instrument pointed out of the present invention is the abbreviation of stepping motor for meter with stepper motor, So-called instrument with stepper motor ontology i.e. refer to only electromagnetic component and without the stepping motor for meter of electronic control part.
Numerical indexes driving element outline drawing one of the Fig. 1 with USB interface;
Numerical indexes driving element outline drawing two of the Fig. 2 with USB interface;
Numerical indexes driving element outline drawing three of the Fig. 3 with USB interface;
Numerical indexes driving element outline drawing four of the Fig. 4 with USB interface;
Numerical indexes driving element exploded view one of the Fig. 5 with USB interface;
Numerical indexes driving element exploded view two of the Fig. 6 with USB interface;
Numerical indexes driving element exploded view three of the Fig. 7 with USB interface;
Fig. 8 removes the driving element movement figure one after shell and cap;
Fig. 9 removes the driving element movement figure two after shell and cap;
Figure 10 iron-core workpiece figure;
Figure 11 removes the driving element movement figure three after shell and cap;
Figure 12 removes the driving element movement figure four after shell and cap;
Figure 13 PCB circuit board electronic component front view;
Figure 14 PCB circuit board stepper motor ontology front view;
Figure 15 removes the view after shell, cap, PCB circuit board.
Label declaration:
1 shell
13 pillars
14 shaft cylindrical bodies
15 installation steps
2 caps
21 cap mounting holes
22 hollow support cylindrical bodies
3 usb sockets
4 pointers
5 PCB circuit boards
51 ARM chips
52 USB transceiver controller L
53 micro-stepping Multi-level microstep chips
54 USB transceiver controller J
55 freewheeling diodes
56 mounting-positioning holes
61 p-m rotor body A
62 driven transmission wheel B
63 driven transmission wheel C
64 rotation axis driven wheel D
65 rotation axis
66 magnet exciting coil packets
67 iron-core workpieces
671 holes A
672 holes C
673 holes D
674 rectangle iron core cylinders
675 nylon cylinder bodies
68 support location holes
69 magnet exciting coil pins
8 fixed pillars
Specific embodiment
The present invention is as shown in Fig. 1 to Figure 15.In order to clearly demonstrate the embodiment of the present invention or technical side in the prior art Case, the drawings to be used in the embodiments are briefly described below, it is clear that drawings discussed below is only this hair Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with Other derivative attached drawings are obtained according to these attached drawings.
Numerical indexes driving element with USB interface, including shell 1, cap 2, instrument stepper motor ontology, PCB circuit Plate 5, is characterized by:
The instrument stepper motor ontology and PCB circuit board 5 is encapsulated in the cap 2 of the shell 1 and hexagon shape of hexagon shape In the space surrounded, the PCB circuit board 5 is hexagon shape, and Surface Mount is welded with ARM chip 51, micro-stepping at a surface thereof Away from Multi-level microstep chip 53, USB transceiver controller L 52, USB transceiver controller J 54, freewheeling diode 55, two USB interfaces Socket 3 is welded in PCB circuit board 5;It include instrument stepper motor body part, PCB electricity on the another side of PCB circuit board 5 On road plate 5 after the component combination on two sides, become the numerical indexes driving element with USB interface;
There are following connection relationships for the element being welded in PCB circuit board 5: ARM chip 51 is core devices, I/O pin Be connected with the input pin of micro-stepping Multi-level microstep chip 53, the output pin of micro-stepping Multi-level microstep chip 53 again with excitation wire It encloses pin 69 to be connected, the freewheeling diode 55 is in parallel with the magnet exciting coil pin 69 of two magnet exciting coil packets 66 respectively;
The end DATA+ and DATA- in two USB interfaces respectively with USB transceiver controller L 52 and USB transceiver controller DATA+ with DATA- pin on J 54 is connected, the transmission USB_ of USB transceiver controller L 52 and USB transceiver controller J 54 TX0 is connected with two groups of universal serial bus pins of ARM chip 51 respectively again with USB_RX0 pin is received;
The instrument a set of machine with two-phase excitation coil drive, three-level reduction gear built in stepper motor ontology Structure, including iron-core workpiece 67, magnet exciting coil packet 66, p-m rotor body A 61, driven transmission wheel B 62, driven transmission wheel C 63 and turn Moving axis driven wheel D 64 respectively symmetrically stretches out two rectangle iron core cylinders 674 on the arm of 67 two sides of iron-core workpiece, and two are encouraged Magnetic coil packet 66 is inserted into rectangle iron core cylinder 674 respectively, and magnet exciting coil pin 69 is welded in PCB circuit board 5;
The hole A 671, the hole C 672 and the hole D 673 are provided on the central axes of the iron-core workpiece 67, the p-m rotor body A 61 pacifies At the hole A 671, driven transmission wheel C 63 is mounted at the hole C 672, and rotation axis driven wheel D 64 is mounted at the hole D 673, wherein 671 position of the hole A locating for p-m rotor body A 61 is the magnetic yoke center that two 66 windings of magnet exciting coil packet are formed, magnet exciting coil packet After 66 are powered, magnetic conductance variation will generate torque, and driving p-m rotor body A 61 is rotated;
It is opened on the iron-core workpiece 67 there are four location hole 68 is supported, is inlaid with hollow nylon cylinder at support location hole 68 Body 675, the inside of the shell 1 is there are four pillar 13, and when installation, four nylon cylinder bodies 675 on iron-core workpiece 67 are close to PCB circuit board (5), four pillars 13 inside shell 1 pass through after four support location holes 68 on iron-core workpiece 67 with iron-core workpiece 67 connect;
There are following meshing relations: p-m rotor for three-level reduction gear mechanism in the instrument stepper motor ontology Body A 61 is driving wheel, and 62 engaged transmission of it and driven transmission wheel B forms primary speed-down drive mechanism;Driven transmission wheel B 62 With 63 engaged transmission of driven transmission wheel C, double reduction drive mechanism is formed;Driven transmission wheel C again with rotation axis driven wheel D 64 Engaged transmission forms three-level reducing transmission structure;The rotation axis 65 with rotation axis driven wheel D 64 is coaxial is connected, guarantee to turn Synchronous drive rotation axis 65 when moving axis driven wheel D 64 is rotated;
There are four hollow support cylindrical body 22 on the cap 2 of the hexagon shape, four be welded in PCB circuit board 5 are solid Determine pillar 8 to stretch out from hollow support cylindrical body 22, for being riveted on the shell of other portable apparatus;
There is an installation step 15 in the corner of the 1 inside adjacent edge of shell respectively, and there are six caps to pacify on the cap 2 Hole 21 is filled, is opened in the PCB circuit board 5 there are six mounting-positioning holes 56, when assembly, the PCB circuit board 5 after element is welded It first places on the installation step 15 of shell 1, covers cap 2, screw is passed through to cap mounting hole 21, PCB circuit on cap 2 After mounting-positioning holes 56 on plate 5, an entirety is connected to the installation step 15 on shell 1, and the rotation axis 65 is from turning 64 center moving axis driven wheel D is stretched out, and is socketed after the shaft cylindrical body 14 on shell 1, then with pointer 4.
The p-m rotor body A61 is six toothings, using NdFeB material.
Driven transmission wheel B 62, the driven wheel C 63 and rotation axis driven wheel D 64 uses nylon 66 material.
The rotation axis 65 is stainless pin.
The iron-core workpiece 67 is using the permalloy material for having high magnetic permeability under low-intensity magnetic field.
Two usb sockets 3 support USB2.0 agreement.
It should be pointed out that the present invention is directly by instrument stepper motor ontology and PCB circuit board, sub-driver circuit, ARM core It is whole that piece and USB interface constitute a control, and electricity is directly taken from USB interface, control DATA+ of the signal from USB interface and DATA-, the ARM chip support the high-speed serial data input and output of two-way, can quickly decode the number on USB interface According to stream, and the directly proportional umber of pulse of stepper motor rotation axis angular displacement is resolved to, by control pulse number come pilot angle position Shifting amount, the angular displacement signal directly currently indicated to digital dial plate output instrument with stepper motor rotation axis, to reach rotation axis The purpose for driving its pointer to be accurately positioned.In addition, ARM chip controls the speed of stepper motor rotation by control pulse frequency And acceleration is particularly suitable for the digitlization instruction of network instrument and high-end instrument, is not necessarily to realize the purpose of throw of pointer speed regulation Separately add control circuit.
Numerical indexes driving element with USB interface proposed by the invention, has the following beneficial effects:
1. a big characteristic be by instrument stepper motor ontology, control driving circuit it is integrated with USB interface, to change number The traditional circuit drives mode of pointer.The present invention is designed to the purpose of two support plug and play USB interfaces, first is that passing through driving Numerical indexes movement becomes the numerical indexes node of portable apparatus, second is that can bit machine interface directly up, it is synchronous The angular displacement information of stepper motor rotation axis, and instruction information are uploaded, can be widely applied to all kinds of with the portable of USB interface Pointer class digital instrument.
2. present invention employs the design philosophy of system engineering, enveloping solid by hexagon shell as component, inside is used Control driving logic circuit and instrument stepper motor ontology are dexterously separated, are realized as demarcation plate by PCB circuit board The connection of electronic control circuit and instrument between stepper motor body part, and keep mutual electromagnetic interference minimum;Another party Face, the present invention take full advantage of supporter of the iron-core workpiece as instrument stepper motor ontology, and flattening, assembly letter are tended in structure It is single, ensure that it is whole most save, system optimal, to provide a kind of low cost, can be mass-produced and band USB convenient for safeguarding The solution of the numerical indexes driving element of interface.
3. its unexpected effect is, the present invention takes the lead in proposing a numerical indexes driving by USB control Crucial particular device, external interface logic very simple, only one output rotation axis with pointer and two USB interfaces are inserted Seat can be widely applied to all kinds of portable digital pointer instruction class instrument with USB interface, fill up using USB interface just Formula numerical indexes class instrument is taken in the blank in this field.
Above-mentioned is the preferred embodiments of the invention.In this specification, specific case is applied to the principle of the present invention and implementation Mode is expounded, and is only used for helping to understand core concept of the present invention, be should not be construed as limiting the invention.Affiliated neck The technical staff in domain understands, is not departing from the spirit and scope of the present invention defined by appended claims, in form With the various change to made by the present invention in details, protection scope of the present invention is belonged to.

Claims (6)

1. the numerical indexes driving element with USB interface, including shell (1), cap (2), instrument stepper motor ontology, PCB electricity Road plate (5), it is characterised in that:
Instrument stepper motor ontology and PCB circuit board (5) are encapsulated in the shell of shell (1) and hexagon shape of hexagon shape In the space that lid (2) is surrounded, the PCB circuit board (5) is hexagon shape, and Surface Mount is welded with ARM chip at a surface thereof (51), micro-stepping Multi-level microstep chip (53), USB transceiver controller L (52), USB transceiver controller J(54), freewheeling diode (55), two usb sockets (3) are welded on PCB circuit board (5);It include that instrument is used on the another side of PCB circuit board (5) Stepper motor body part becomes the numerical indexes driver with USB interface in PCB circuit board (5) after the component combination on two sides Part;
There are following connection relationships for element in the PCB circuit board (5): ARM chip (51) is core devices, I/O Pin is connected with the input pin of micro-stepping Multi-level microstep chip (53), and the output pin of micro-stepping Multi-level microstep chip (53) is again It is connected with magnet exciting coil pin (69), the freewheeling diode (55) magnet exciting coil with two magnet exciting coil packets (66) respectively Pin (69) is in parallel;
The end DATA+ and DATA- in two USB interfaces is controlled with USB transceiver controller L(52) and USB transmitting-receiving respectively Device J(54) on DATA+ with DATA- pin be connected, USB transceiver controller L(52) and USB transceiver controller J(54) transmission USB_TX0 is connected with two groups of universal serial bus pins of ARM chip (51) respectively again with USB_RX0 pin is received;
The instrument a set of machine with two-phase excitation coil drive, three-level reduction gear built in stepper motor ontology Structure, including iron-core workpiece (67), magnet exciting coil packet (66), p-m rotor body A(61), driven transmission wheel B(62), driven transmission wheel C (63) and rotation axis driven wheel D(64), respectively symmetrically stretch out two rectangular iron stems on the arm of the iron-core workpiece (67) two sides Body (674), two magnet exciting coil packets (66) are inserted into rectangle iron core cylinder (674) respectively, and magnet exciting coil pin (69) welds respectively It connects on PCB circuit board (5);
The hole A (671), the hole C (672) and the hole D (673), the p-m rotor are provided on the central axes of the iron-core workpiece (67) Body A(61) be mounted at the hole A (671), driven transmission wheel C(63) be mounted at the hole C (672), rotation axis driven wheel D(64) installation At the hole D (673), wherein p-m rotor body A(61) locating for the hole A (671) position be two magnet exciting coil packet (66) winding shapes At magnetic yoke center, after magnet exciting coil packet (66) is powered, magnetic conductance variation will generate torque, drive p-m rotor body A(61) rotation;
It is opened on the iron-core workpiece (67) there are four location hole (68) are supported, is inlaid with hollow Buddhist nun at support location hole (68) Imperial cylindrical body (675), the inside of the shell (1) is there are four pillar (13), four nylon when installation, on iron-core workpiece (67) Cylindrical body (675) is close to PCB circuit board (5), and four internal pillars (13) of shell (1) are each passed through four on iron-core workpiece (67) A support location hole (68) connects with iron-core workpiece (67) afterwards;
There are following meshing relations: p-m rotor for three-level reduction gear mechanism in the instrument stepper motor ontology Body A(61) it is driving wheel, it and driven transmission wheel B(62) engaged transmission, form primary speed-down drive mechanism;Driven transmission wheel B (62) with driven transmission wheel C(63) engaged transmission, double reduction drive mechanism is formed;Driven transmission wheel C is driven with rotation axis again Take turns D(64) engaged transmission, form three-level reducing transmission structure;The rotation axis (65) and rotation axis driven wheel D(64) is coaxial Be connected, guarantee rotation axis driven wheel D(64) rotation when synchronous drive rotation axis (65);
There are four hollow support cylindrical body (22) on the cap (2) of the hexagon shape, are welded on PCB circuit board (5) Four fixed pillars (8) are stretched out from hollow support cylindrical body (22) respectively, for being riveted on the shell of other portable apparatus On;
There is an installation step (15) in the corner of the internal adjacent edge of the shell (1) respectively, on the cap (2) there are six Cap mounting hole (21) is opened in the PCB circuit board (5) there are six mounting-positioning holes (56), when assembly, after element is welded PCB circuit board (5) first place on the installation step (15) of shell (1), cover cap (2), by screw pass through cap (2) on Cap mounting hole (21), after the mounting-positioning holes (56) in PCB circuit board (5), respectively with the installation step on shell (1) (15) it is connected to an entirety, the rotation axis (65) is stretched out from the center rotation axis driven wheel D(64), is passed through on shell (1) Shaft cylindrical body (14) after, then with pointer (4) be socketed.
2. the numerical indexes driving element according to claim 1 with USB interface, it is characterised in that: the permanent magnetism turns Daughter A(61) it is six toothings, using NdFeB material.
3. the numerical indexes driving element according to claim 1 with USB interface, it is characterised in that: the transmission from Driving wheel B(62), driven wheel C(63) and rotation axis driven wheel D(64) use nylon 66 material.
4. the numerical indexes driving element according to claim 1 with USB interface, it is characterised in that: the rotation axis It (65) is stainless pin.
5. the numerical indexes driving element according to claim 1 with USB interface, it is characterised in that: the iron-core workpiece (67) using the permalloy material for having high magnetic permeability under low-intensity magnetic field.
6. the numerical indexes driving element according to claim 1 with USB interface, it is characterised in that: two USB Interface socket (3) supports USB2.0 agreement.
CN201811577498.2A 2018-12-24 2018-12-24 Numerical indexes driving element with USB interface Withdrawn CN109596153A (en)

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CN201811577498.2A CN109596153A (en) 2018-12-24 2018-12-24 Numerical indexes driving element with USB interface

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110275574A (en) * 2019-05-10 2019-09-24 国家电网有限公司 A kind of handheld terminal for realizing substation data security isolation

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