CN106992615A

CN106992615A - The hollow type rotor and its winding structure of d.c. motor

Info

Publication number: CN106992615A
Application number: CN201610040542.0A
Authority: CN
Inventors: 吴连信
Original assignee: Nobusawa Motor Co Ltd
Current assignee: Nobusawa Motor Co Ltd
Priority date: 2016-01-21
Filing date: 2016-01-21
Publication date: 2017-07-28
Anticipated expiration: 2036-01-21
Also published as: CN106992615B

Abstract

The present invention is the hollow type rotor and its winding structure of a kind of d.c. motor, using to a d.c. motor, the hollow type rotor structure includes a commutator, one output and a hollow type rotor, wherein, the hollow type rotor includes an iron core, multiturn coil is arranged with the iron core, and the hollow type rotor has been axially formed an axis hole, when the hollow type rotor is attached in a housing, it can keep a gap with the stator being fixed in the housing, and be connected respectively with the commutator and the output, with after electric current to be sent to the commutator the respectively coil, hollow type rotor can be made to produce corresponding electromagnetic field, so, the hollow type rotor will produce mutual repulsion effect with multiple magnet on stator respectively because of the electromagnetism field energy, and transfer out the rotation torsion produced by it via output.

Description

The hollow type rotor and its winding structure of d.c. motor

Technical field

The present invention be on DC motor structure, it is espespecially a kind of that there is hollow type rotor and hollow at this in a specific way The DC motor structure of coiling is carried out on type rotor.

Background technology

Because received electric power can be changed into mechanical energy by motor (Electric motor, also known as motor), with Other devices can be driven so that motor is widely used to various products, such as：Electric automobile, lathe, electric fan, water In the different fields such as pump ..., general speech, existing motor species can be divided into mostly d.c. motor (direct current, Abbreviation DC motor), alternating current motor (Alternating-Current, abbreviation AC motor) and impulse motor (pulse The polytype such as motor), wherein, because characteristic curves such as " rotary speed-torques " and " electric current-torque " of d.c. motor is line Sexual intercourse, makes d.c. motor simple and easily controllable, therefore, with the invention of power regulator (abbreviation SCR), and magnet material Material, carbon brush, the improvement of insulating materials, along with people increasingly increase for the demand of speed Control, d.c. motor again once again into For the key technology of industrial automation.

Refer to shown in Fig. 1, the basic framework of current d.c. motor 1, it is main to include a housing 10, a pivot 11, one Rotor 12 (rotor), a stator 13 (stator) and a commutator 14 (commutator), wherein, one is provided with the housing 10 Receiving space 101, the pivot 11 is hubbed in the housing 10, and its one end output shaft 111 be it is convex be exposed at the housing 10 it Outside, the rotor 12 is combined by multiple silicon steel sheets, and assembling is fixed on the pivot 11, and multiturn is wound with the rotor 12 Coil, also, the stator 13 is made up of permanent magnet, and is fixed on the outside that the inwall of the housing 10 corresponds to the rotor 12 Periphery, and a spacing is kept with the rotor 12, the commutator 14 is located in the receiving space 101, can receive external power, and Mutually be electrically connected with the coil, with can by power Transmission to the coil, meanwhile, the commutator 14, which can still change, is delivered to the coil The sense of current, in this way, open palm rule according to Buddhist come bright left hand rule or the right hand, when a wire is placed in a magnetic field, if The wire is electrified after stream, and the magnetic field produced by the wire can cut the magnetic field line in original magnetic field, and then the wire is produced shifting It is dynamic, therefore, after coil electricity on rotor 12, the magnetic field produced by it, the magnetic line of force that can be produced by cutting stator 13, and generate Rotation torque causes the rotation of rotor 12, and converts electric energy to kinetic energy.

From the above, refer to again shown in Fig. 1, the overall structure of current d.c. motor 1 almost ossifys, and does not have novelty Design, cause those skilled in the art to be often only capable of being improved for transmission mechanism, therefore, inventor it is considered that whether The rotor structure of prior art d.c. motor can be improved, to provide a kind of brand-new DC motor structure, make this area Technical staff can be easily adjusted other elements (such as according to different application targets：Stator) quantity or installation site, enter And the favor of user can be obtained, and commercially occupy the ground of a seat, this also desires most ardently an important topic of solution for the present invention.

The content of the invention

Framework in view of foregoing prior art d.c. motor is continued to use for many years, causes those skilled in the art to be difficult just other Subelement (such as：Stator) it is adjusted and changes, inventor studies according to practical experience for many years, and by permanent effort After experiment, the hollow type rotor and its winding structure of a kind of d.c. motor of the present invention are developed finally, to pass through this hair It is bright and can provide that a kind of effect is further excellent, and can be according to the actual demand of those skilled in the art, adjustment member element easily D.c. motor.

The purpose of the present invention, is to provide the hollow type rotor and its winding structure of a kind of d.c. motor, and the hollow type turns Minor structure is applied on a d.c. motor, including a commutator, an output and a hollow type rotor, wherein, the commutator with Output is separately assembled to the front and back end of the hollow type rotor, so that the commutator and the output can be with the hollow type rotors Synchronous axial system, also, the hollow type rotor includes an iron core, the iron core is combined by multiple silicon steel sheets, winding on the iron core Have in multiturn coil, and the hollow type rotor and be axially formed an axis hole, the hollow type rotor is the axial direction peace along the housing A gap is kept in a housing of d.c. motor, and with the stator that is fixed in the housing, respectively the two ends of the coil point Two adjacent commutator segments is not electrically connected to the commutator, to receive the electric current that the commutator is transmitted, makes the hollow type rotor Corresponding electromagnetic field is produced, in this way, those skilled in the art just according to demand, and can be provided with the axis hole of the hollow type rotor One inner stator, or in the outside of the hollow type rotor provided with an external stator, or inner stator and external stator are provided with simultaneously, to adjust The operational effectiveness of the d.c. motor.

The second object of the present invention, is that commutator can be arranged on the axis hole of the hollow type rotor by those skilled in the art In, and output is attached on the hollow type rotor, in this way, those skilled in the art are can be before the hollow type rotor Side is provided with a front stator, or the stator after the rear side of the hollow type rotor is provided with one, or simultaneously provided with front stator and rear stator, Greatly improve the convenience that those skilled in the art adjust the d.c. motor.

To the object of the invention, technical characteristic and its effect, to do further understanding with understanding, embodiment is coordinated and schemed Formula, is described in detail as follows.

Brief description of the drawings

Fig. 1 is the structural representation of prior art d.c. motor；

Fig. 2 is that the d.c. motor of the first embodiment of the present invention disassembles schematic diagram；

Fig. 3 is the diagrammatic cross-section of the d.c. motor of the first embodiment of the present invention；

Fig. 4 is the sectional perspective schematic diagram of the hollow type rotor of the first embodiment of the present invention；

Fig. 5 is the coiling schematic diagram of a circle coil of the hollow type rotor of the first embodiment of the present invention；

Fig. 6 is the coiling schematic diagram of the multiturn coil of the hollow type rotor of the first embodiment of the present invention；

Fig. 7 is that the hollow type rotor of the second embodiment of the present invention disassembles schematic diagram；

Fig. 8 is that the d.c. motor of the second embodiment of the present invention disassembles schematic diagram；And

Fig. 9 is the diagrammatic cross-section of the d.c. motor of the second embodiment of the present invention.

【Main element symbol description】

[prior art]

D.c. motor ... 1

Housing ... 10

Receiving space ... 101

Pivot ... 11

Output shaft ... 111

Rotor ... 12

Stator ... 13

Commutator ... 14

[present invention]

D.c. motor ... 2

Housing ... 20,30

Protecgulum ... 20A, 30A

Bonnet ... 20B, 30B

Shell ... 20C

Receiving space ... 200

Delivery outlet ... 201

Brush ... 204

External stator ... 21

External magnet ... 211

Commutator ... 22,32

Disk body ... 220,320

Commutator segment ... 221,321

Output ... 23,33

Hollow type rotor ... 24,34

First gap ... 24A

Second gap ... 24B

Axis hole ... 240,340

Outer iron core ... 241

Interior iron core ... 242

Outer wire casing ... 243,243A, 243B

Fixing hole ... 244

First recess ... 244A, 344A

Second recess ... 244B, 344B

Interior wire casing ... 245,245A, 245B

Hold-down bars ... 246,346

Position-limiting tube ... 247

Inner stator ... 25

Internal magnet ... 251

Bearing ... 26A, 26B, 36A, 36B

Coil ... 27,27A, 27B

Preceding magnet ... 311

Preceding iron core ... 341

Iron core ... 342 afterwards

Preceding wire casing ... 343

Wire casing ... 345 afterwards

Magnet ... 351 afterwards

Axostylus axostyle ... 39

Specific embodiment mode

The present invention is the hollow type rotor and its winding structure of a kind of d.c. motor, due to the knot of prior art d.c. motor Structure is similar, and it is when improving the efficiency of d.c. motor, to be only capable of to prior art d.c. motor to cause those skilled in the art Device in addition is (such as：Transmission mechanism) improved, it is that can provide those skilled in the art more to select therefore, inventor It is specifically designed out a kind of brand-new DC motor structure, and the structure for " rotor " therein and winding mode progress thereon Improve, herein the special person of carrying, applicant is to develop a kind of brand-new " hollow type rotor ", for those skilled in the art's energy Enough according to the actual requirements, using " the hollow type rotor ", and quantity and the position of stator are adjusted, related description can be recorded in detail In follow-up two embodiments, still, the present invention is not only defined in the pattern drawn in subsequent drawings, those skilled in the art Member, after can grasp the overall technology feature of this case, adjusts the outward appearance aspect and element of each element in subsequent embodiment Quantity, herein in advance explanation.

The present invention is the hollow type rotor and its winding structure of a kind of d.c. motor, is to apply to a d.c. motor 2, please join Read shown in Fig. 1 and Fig. 2, the d.c. motor 2 includes a housing 20, a hollow type rotor structure and an at least stator, one first In embodiment, it is in a cylinder that the housing 20, which is, and it is interior provided with a receiving space 200, and its rear end offers multiple delivery outlets 201, the delivery outlet 201 is connected with the receiving space 200, wherein, the housing 20 is by a protecgulum 20A, a bonnet 20B and one Shell 20C assembles, also, multiple brushes 204 (carbon brush, also known as carbon brush) are installed in protecgulum 20A, these electricity Brush 204 can receive foreign current, and bonnet 20B is then provided with the delivery outlet 201, and shell 20C is in then hollow tube shape, and embedding It is stuck in protecgulum 20A and bonnet 20B between the two, still, in other embodiments of the invention, those skilled in the art can According to the actual requirements, the pattern (aspect of the second embodiment of the present invention as in the after-mentioned) of the housing 20 is adjusted.

Refer to again shown in Fig. 1 and Fig. 2, the hollow type rotor structure is included in a commutator 22, an output 23 and one Casement rotor 24, wherein, the commutator 22 is arranged in the receiving space 200, and is pivoted to the shell along the axial direction of the housing 20 The inwall of the front end of body 20, the output 23 is then arranged in the receiving space 200, and is pivoted to the shell along the axial direction of the housing 20 The inwall of the rear end of body 20, in this first embodiment, the commutator 22 are located in protecgulum 20A, and including a disk body 220 and many Individual commutator segment 221, wherein, these commutator segments 221 are assembled to the leading flank of the disk body 220 with being separated by a spacing, and with this Brush 204 in protecgulum 20A is mutually electrically connected, to receive the foreign current that the brush 204 is transmitted；In addition, the output 23 is located at Correspond to the position of the delivery outlet 201 in bonnet 20B so that a driving member can be by the delivery outlet 201, with the output 23 are connected, in this way, when the d.c. motor 2 is operated, the kinetic energy produced by the d.c. motor 2 just can be sequentially via the output 23 and driving member, output a to load is (such as：Gearbox) so that the load can be operated by the kinetic energy, special one carry herein Person, the output 23 can be according to the type of driving member, such as：Bar, chape or other elements are refined, and with corresponding element state Sample, such as：Gear-like, wheel hub or other elements so that the present invention hollow type rotor structure can be applied to more utensils or On device.

Furthermore, refer to shown in Fig. 2 and Fig. 3, the hollow type rotor 24 is combined by multiple iron cores, in it vertically An axis hole 240 is formed with, its front end is connected with the commutator 22, and its rear end is then connected with the output 23, also, in this Multiturn coil 27 is arranged with casement rotor 24, respectively the two ends of the coil 27 can be electrically connected the two-phase to the commutator 22 respectively Adjacent commutator segment 221, to receive the electric current that the commutator 22 is transmitted, makes the hollow type rotor 24 produce corresponding electromagnetic field, this Outside, two adjacent commutator segments 221 can be according to a setpoint frequency on the commutator 22, the sense of current for making it be sent to correspondence coil 27 Reverse, so that the electromagnetic field produced by the coil 27 is also reversed simultaneously, this commutation process is repeated according to the setpoint frequency one, such as This, when the hollow type rotor 24 is rotated because of magnetic fields, also can synchronously drive the commutator 22 and the output 23 to rotate.

In the first embodiment, refer to shown in Fig. 2 and Fig. 4, the hollow type rotor 24 is included in an outer iron core 241 and one Iron core 242, the outer iron core 241 with interior iron core 242 is combined by multiple silicon steel sheets, wherein, the outside of the outer iron core 241 Surface is provided with multiple outer wire casings 243 vertically, and its inner surface is then provided with multiple first recess 244A vertically, also, this is interior The inner surface of iron core 242 is provided with multiple interior wire casings 245 vertically, and its outer surface is then provided with multiple second recesses vertically 244B, these outer wire casings 243 and interior wire casing 245 are used for winding coil 27, when the outer iron core 241 and interior iron core 242 are assembled into one During body, the inner surface of the outer iron core 241 can recline to the outer surface of the interior iron core 242, and respectively the first recess 244A meetings It is corresponding with respectively second recess 244B respectively, to form a fixing hole 244 respectively so that these fixing holes 244 can be along along this The circle circumferential array of casement rotor 24 is formed, in addition, multiple hold-down bars 246 can be respectively protruding into corresponding respectively fixing hole In 244, to be integrated as one with the hollow type rotor 24, moreover, respectively the front end of the hold-down bars 246 can expose outside the hollow type Rotor 24, and the trailing flank of the disk body 220 of the commutator 22 can be fixed to, respectively the rear end of the hold-down bars 246 can also expose outside this Hollow type rotor 24, and the output 23 is fixed to, in this way, the hollow type rotor 24, commutator 22 and the three of output 23 are just It can be assembled into one, with energy synchronous axial system.

In addition, referring to again shown in Fig. 2 and Fig. 4, turn to avoid the commutator 22 and output 23 from touching the hollow type Son 24 on coil 27, respectively the front and rear end of the hold-down bars 246 can still be arranged a position-limiting tube 247 respectively, the position-limiting tube 247 External diameter is more than the aperture of the fixing hole 244, and can not stretch in the fixing hole 244, and its be located at the commutator 22 with it is hollow Type rotor 24 between the two, or positioned at the output 23 and hollow type rotor 24 between the two, so that the commutator 22 and output 23 The coil 27 on the hollow type rotor 24 will not be touched.But, pay special attention to herein, in other embodiments of the invention, Those skilled in the art can use other manner, the hollow type rotor 24, commutator 22 is combined with the three of output 23, If the hollow type rotor 24 can synchronously drive the commutator 22 and output 23, and respectively with the commutator 22 and output 23 keep a predetermined gap, are the annexation of the invention to be protected.

In addition, refer to again shown in Fig. 2 and Fig. 4, the outer iron core 241 and interior iron core 242 are by winding coil 27 thereon Assembling is integrally fixed, to avoid the outer iron core 241 from being mutually disengaged with interior iron core 242, and makes these hold-down bars 246 be consolidated respectively In fixed extremely these corresponding fixing holes 244.Only illustrate the canoe of the coil 27 of the present invention below, still, the present invention's In other embodiments, those skilled in the art can be such that coil 27 is fixed on hollow type rotor 24 with different canoes, Refer to shown in Fig. 5, wherein, the local circle coil 27 of hollow type rotor 24 and one is only shown in Fig. 5, to avoid diagram excessively It is complicated.The outer surface of the outer iron core 241 offers adjacent two outer wire casing 243A, 243B, the inner surface of the interior iron core 242 Wire casing 245A, 245B in adjacent two are then offered, wherein, outer wire casing 243A is corresponding with interior wire casing 245A, outer wire casing 243B Corresponding with interior wire casing 245B, moreover, one end of a coil 27A can be electrically connected to a wherein commutator segment 221, its other end is then Outer wire casing 243A front end is stretched to, and by the outer wire casing 243A, and the rear end of the outer wire casing 243A is extend out to, then, should The coil 27A other end can stretch to interior wire casing 245A rear end, and by interior wire casing 245A, and it extend out to the interior wire casing 245A Front end, moreover, it oblique can stretch to outer wire casing 243B, and sequentially by the outer wire casing 243B, outer wire casing 243B rear end, Interior wire casing 245B rear end and interior wire casing 245B, then the front end of the interior wire casing 245B is extend out to, changed with that can be electrically connected to another To piece 221, foregoing coil 27A canoe is a referred to as circle coil 27A.

Furthermore, refer to shown in Fig. 2 and Fig. 6, when the hollow type rotor 24 is intended to winding multiturn coil 27, it is only necessary to make stretching To the oblique front ends for stretching to outer wire casing 243A of coil 27A (as shown in Figure 5) of interior wire casing 245B front end, and repeat foregoing twine Multiturn coil 27 can be formed around mode.In addition, when another binding circle 27B of the adjacent coil 27 other end, to extend out to this interior Behind wire casing 245A front end, coil 27A one end can be both with another coil 27B other end, and electrical connection is to same On commutator segment 221, and when electricity is streamed to coil 27A one end by commutator segment 221, it can receive another coil 27B The other end electric current that transmits out, then, when commutator segment 221 performs commutation process, then aforementioned currents direction can be produced Reverse, consequently, it is possible to which respectively coil 27A, 27B just can produce corresponding electromagnetic field because of the sense of current.

Refer to again shown in Fig. 2 and Fig. 3, in this first embodiment, the d.c. motor 2 is provided with an external stator 21 and one 25 two stators of stator, and the external stator 21 and inner stator 25 be all secured in the housing 20, wherein, the external stator 21 includes many Individual external magnet 211, respectively the external magnet 211 be located in shell 20C, it is and circumferentially fixed along shell 20C (that is, housing 20) circle To shell 20C inwall, respectively the external magnet 211 is separated by a spacing, and wantonly two adjacent external magnet 211 polarity phase each other Instead, the hollow type rotor 24 being axially mounted in the external stator 21 along the housing 20, and keep one first with the external stator 21 Gap 24A, so that the hollow type rotor 24 can be rotated freely in the external stator 21；In addition, the inner stator 25 is including multiple Internal magnet 251, and can be along the circumference of the housing 20 to the axis hole for being fixed to the hollow type rotor 24 by bearing 26A, 26B In 240, and one second gap 24B is kept with the hollow type rotor 24, so that the hollow type rotor 24 can be freely default at this Son 21 is outer to be rotated, and respectively the internal magnet 251 is separated by a spacing, and wantonly two adjacent internal magnet 251 opposite polarity each other；But It is that in other embodiments of the invention, those skilled in the art according to demand, and can be provided only with single stator (such as：Outside Stator 21 or inner stator 25), can reduce the volume of the d.c. motor 2 or reduce its production cost.In this way, referring to Fig. 2 again It is shown, when the coil 27 of the hollow type rotor 24 receives the electric current that the commutator 22 is transmitted, and produce after corresponding electromagnetic field, Will because of the electromagnetism field energy respectively with stator (such as：External stator 21 or inner stator 25) on multiple magnet (such as：External magnet 211 is interior Magnet 251) mutual repulsion effect is produced, and the hollow type rotor 24 is rotated, and the output 23 synchronously is driven, by the hollow type The slow-speed of revolution and the one of high torque that rotor 24 is produced are rotated in torsion, output to load.

Refer to again shown in Fig. 4, although said hollow type rotor 24 is to be combined by outer iron core 241 with interior iron core 242, And it offers corresponding outer wire casing 243 or interior wire casing 245 vertically, still, those skilled in the art can be according to its reality Using upper demand, the structure of hollow type rotor is adjusted, for example, in a second embodiment, is referred to shown in Fig. 7, one Hollow type rotor 34 includes an iron core, wherein, iron core iron core 342 after iron core before one 341 and one is constituted, the preceding iron core 341 front side surface is radially provided with multiple preceding wire casings 343, and side surface is then radially provided with multiple first recess 344A thereafter, Also, the rear side surface of the rear iron core 342 is radially provided with multiple rear wire casings 345, and its front side surface is then radially provided with multiple Second recess 344B, these preceding wire casings 343 and rear wire casing 345 are to supply winding coil, its winding mode (that is, front identical with Fig. 5 Groove 343 correspond to outer wire casing 243A, 243B, rear wire casing 345 correspond to interior wire casing 245A, 245B), also, when the preceding iron core 341 with When iron core 342 is assembled into one afterwards, the rear side surface of the preceding iron core 341 can recline to the front side surface of the rear iron core 342, and respectively First recess 344A can be corresponding with respectively second recess 344B respectively, and to form a fixing hole respectively, these fixing holes are then It can be passed through respectively for hold-down bars 346, so that these hold-down bars 346 are combined into one with hollow type rotor 34.

Refer to again shown in Fig. 7~9, an axis hole 340, and a commutator 32 have been axially formed in the hollow type rotor 34 It is attached in the axis hole 340, in this second embodiment, the commutator 32 includes a disk body 320 and multiple commutator segments 321, its In, these commutator segments 321 are assembled to the leading flank of the disk body 320 with being separated by a spacing, the periphery of the disk body 320 then with this One end of a little hold-down bars 346 is connected, and the other end of these hold-down bars 346 still exposes outside the hollow type rotor 34, in addition, defeated The rear side of the disk body 320 can be then fixed to by going out part 33, and its periphery is connected with the other end of these hold-down bars 346, in this way, working as When the hollow type rotor 34 is rotated, the commutator 32 and output 33 just can be synchronously driven.

In this second embodiment, the hollow type rotor 34 can be also used to d.c. motor, and Fig. 7~9 are referred to again Shown, the hollow type rotor 34 is located in a housing 30, and the housing 30 includes an a protecgulum 30A and bonnet 30B, wherein, in this Casement rotor 34 is located in both protecgulum 30A and bonnet 30B receiving space, and protecgulum 30A and bonnet 30B is between the two Space can form delivery outlet (such as Fig. 2 delivery outlet 201), for a driving member can via the delivery outlet, and with the output 33 It is connected；One front stator can be arranged on the front side of the hollow type rotor 34, and keep one first spacing with the hollow type rotor 34, Stator can then be arranged on the rear side of the hollow type rotor 34 after one, and keep one second spacing with the hollow type rotor 34, wherein, The front stator includes multiple preceding magnet 311, and these preceding magnet 311 are separated by a spacing, and wantonly two adjacent preceding magnet 311 that This opposite polarity, also, the rear stator includes multiple rear magnet 351, these rear magnet 351 are separated by a spacing, and appoint two-phase Adjacent rear magnet 351 opposite polarity each other, in this second embodiment, preceding magnet 311 is affixed on protecgulum 30A, rear magnet 351 are fixed on bonnet 30B, and both protecgulum 30A and bonnet 30B shaft core position are respectively connecting to the two of an axostylus axostyle 39 End, also, the axostylus axostyle 39 is still respectively equipped with bearing 36A, a 36B adjacent to the position at two ends, in this way, hollow type rotor 34, front stator , just can be because of magnetic field mutual repulsion effect to each other between rear stator three, and the hollow type rotor 34 is rotated, and then energy band is moved To device 32 and output 33.

Understand in summary, by the design of the hollow type rotor structure, those skilled in the art just can be according to reality Quantity and the position of demand, adjustment stator or other elements, example inner stator as the aforementioned, external stator, front stator or rear stator etc., Effectively to control the efficiency and production cost of d.c. motor.Press, it is described above, only it is presently preferred embodiments of the present invention, still, this The advocated interest field of invention, it is not limited to this, this those skilled in the art are familiar with by all, according to technology disclosed in this invention Content, can think easily and equivalence changes, all should belong to do not depart from the present invention protection category.

Claims

1. a kind of hollow type rotor and its winding structure for d.c. motor, the d.c. motor is included in a housing, the housing Provided with a receiving space, the hollow type rotor structure includes：

One commutator, in the receiving space, and is pivoted to along the axial direction of the housing inwall of the housing forward end, the commutation Two adjacent commutator segments can make it be sent to the reverse of the sense of current of a coil, so that coil is produced according to a setpoint frequency on device Raw electromagnetic field is also reversed simultaneously, and this commutation process is repeated according to the setpoint frequency one；

One output, in the receiving space, and is pivoted to along the axial direction of the housing inwall of the housing rear end；And

One hollow type rotor, including an iron core, the iron core are combined by multiple silicon steel sheets, and multiturn line is arranged with the iron core Circle, and an axis hole has been axially formed in the hollow type rotor, the hollow type rotor is axially mounted to the receiving along the housing In space, and a gap is kept with the stator that is fixed in the housing, the front and back end of the hollow type rotor respectively with the commutation Device and the output are connected, so that the commutator and the output can be with the hollow type rotor synchronous axial systems, each coil Two ends be electrically connected to the commutator two adjacent commutator segments respectively, to receive the electric current that the commutator is transmitted, make in this Casement rotor produces corresponding electromagnetic field.

2. hollow type rotor as claimed in claim 1 and its winding structure, wherein, the commutator includes a disk body and multiple changed To piece, the leading flank of the disk body is provided with these commutator segments, and these commutator segments are separated by a spacing, before the hollow type rotor End is fixed to the trailing flank of the disk body.

3. hollow type rotor as claimed in claim 2 and its winding structure, in addition to multiple hold-down bars, respectively hold-down bars edge should The circumference of hollow type rotor to, be fixed to the hollow type rotor, and respectively the front and back end of the hold-down bars respectively with the commutator and should Output is connected.

4. hollow type rotor as claimed in claim 3 and its winding structure, wherein, the iron core includes：

One outer iron core, is combined by multiple silicon steel sheets, and its outer surface is provided with multiple outer wire casings vertically, so that the respectively coil It can accommodate to the respectively outer wire casing, the inner surface of the outer iron core is then provided with multiple first recesses vertically；And

Iron core in one, is combined by multiple silicon steel sheets, and its inner surface is provided with multiple interior wire casings vertically, so that the respectively coil It can accommodate to the respectively interior wire casing, the outer surface of the interior iron core is then provided with multiple second recesses vertically, moreover, the interior iron core Outer surface is reclined to the inner surface of the outer iron core, and respectively first recess is formed respectively with corresponding respectively second recess One fixing hole, respectively the fixing hole is to fixed respectively hold-down bars, so that these hold-down bars are combined into one with the hollow type rotor Body.

5. hollow type rotor as claimed in claim 4 and its winding structure, wherein, respectively one end of the coil is electrically connected respectively To a commutator segment therein, its other end is then respectively protruding into the front end of therein one outer wire casing, and by the outer wire casing and is stretched Go out to the rear end of the outer wire casing, then stretch to should outside line groove wherein one in wire casing rear end, and by interior wire casing and stretch Go out to the front end of the interior wire casing, and the oblique leading portion for stretching to adjacent another outer wire casing, and by another outer wire casing and stretch Go out to the rear end of another outer wire casing, then stretch to should another outer wire casing another interior wire casing rear end, it is and another by this Wire casing and the front end of another interior wire casing is extend out in one, to be electrically connected to another commutator segment.

6. hollow type rotor and its winding structure as described in claim 4 or 5, wherein, each front and rear end of the hold-down bars A position-limiting tube is also arranged respectively, and respectively the external diameter of the position-limiting tube is respectively greater than the aperture of the corresponding respectively fixing hole, and positioned at fixation Respectively position-limiting tube of the front end of rod is to be located at the commutator and the hollow type rotor between the two respectively, and position is in the rear end of hold-down bars Respectively the position-limiting tube is to be located at the output and the hollow type rotor between the two respectively.

7. a kind of hollow type rotor and its winding structure for d.c. motor, the d.c. motor is included in a housing, the housing Provided with a receiving space, the hollow type rotor structure includes：

One hollow type rotor, including an iron core, the iron core are combined by multiple silicon steel sheets, and multiturn line is arranged with the iron core Circle, and an axis hole has been axially formed in the hollow type rotor, the hollow type rotor is to be axially mounted to the appearance along the housing Receive in space, and a gap is kept with the stator that is fixed in the housing；

One commutator, is mounted in the axis hole, so that the commutator can be with the hollow type rotor synchronous axial system, each coil Two ends be electrically connected to the commutator two adjacent commutator segments respectively, to receive the electric current that the commutator is transmitted, make in this Casement rotor produces corresponding electromagnetic field, and two adjacent commutator segments can make it be sent to according to a setpoint frequency on the commutator The sense of current of corresponding coil is reversed, so that the electromagnetic field produced by coil is also reversed simultaneously, this commutation process is set according to this Determine frequency one to repeat；And

One output, is connected with the hollow type rotor, so that the output can be with the hollow type rotor synchronous axial system.

8. hollow type rotor as claimed in claim 7 and its winding structure, wherein, the commutator includes a disk body and multiple changed To piece, the leading flank of the disk body is provided with these commutator segments, and these commutator segments are separated by a spacing, and the periphery of the disk body is then solid The fixed axis hole to the hollow type rotor.

9. hollow type rotor as claimed in claim 8 and its winding structure, in addition to multiple hold-down bars, respectively hold-down bars edge should The radial direction of hollow type rotor, is fixed to the hollow type rotor, and respectively the hold-down bars is connected positioned at one end of the axis hole with the disk body Connect, its other end for being exposed at the iron core is then connected with the output.

10. hollow type rotor as claimed in claim 9 and its winding structure, the iron core include：

Iron core before one, is combined by multiple silicon steel sheets, and its front side surface is radially provided with multiple preceding wire casings, so that the respectively coil It can accommodate to the respectively preceding wire casing, the rear side surface of the preceding iron core is then radially provided with multiple first recesses；And

Iron core after one, is combined by multiple silicon steel sheets, and side surface is provided with multiple rear wire casings vertically thereafter, so that the respectively coil It can accommodate to the respectively rear wire casing, the front side surface of the rear iron core is then radially provided with multiple second recesses, also, before the rear iron core Side surface is reclined to the rear side surface of the preceding iron core, and respectively first recess is formed respectively with corresponding respectively second recess One fixing hole, respectively the fixing hole is to fixed respectively hold-down bars, so that these hold-down bars are combined into one with the hollow type rotor Body.

11. hollow type rotor as claimed in claim 10 and its winding structure, wherein, respectively one end of the coil electrically connects respectively A commutator segment therein is connected to, its other end is then respectively protruding into the front end of the wire casing to before therein one, and by the preceding wire casing simultaneously Extend out to the rear end of the preceding wire casing, then stretch to should front groove wherein one after wire casing rear end, and by rear wire casing simultaneously The front end of the rear wire casing is extend out to, and the oblique leading portion for stretching to adjacent another preceding wire casing, and by another preceding wire casing simultaneously Extend out to the rear end of another preceding wire casing, then stretch to should another preceding wire casing another rear wire casing rear end, and pass through this Another rear wire casing and the front end for extending out to another rear wire casing, to be electrically connected to another commutator segment.