CN203278542U

CN203278542U - Electric wheelchair direct-current brushless driving wheel structure

Info

Publication number: CN203278542U
Application number: CN 201320315293
Authority: CN
Inventors: 沈文华; 平雪明
Original assignee: CHANGSHU PINGFANG WHEELCHAIR CO LTD
Current assignee: CHANGSHU PINGFANG WHEELCHAIR CO LTD
Priority date: 2013-06-03
Filing date: 2013-06-03
Publication date: 2013-11-06
Anticipated expiration: 2023-06-03

Abstract

An electric wheelchair direct-current brushless driving wheel structure belongs to the field of human daily life articles. The structure comprises a tyre, a motor, a deceleration mechanism, a wheel hub driving disc and a power-loss braking mechanism. The motor comprises a stator housing, a stator winding, a rotor and a rotor shaft. The stator housing comprises a stator winding chamber. The stator winding is arranged inside the stator winding chamber. The rotor is arranged in a rotor accommodating chamber of the stator winding. A rotor shaft hole is formed on the center of the rotor. The rotor shaft is arranged on the rotor in an insertion way. One end of the rotor shaft is connected with the deceleration mechanism while the other end cooperates with the power-loss braking mechanism. The deceleration mechanism comprises a reduction box casing, a primary planetary deceleration device and a secondary planetary deceleration device. The reduction box casing is fixed with the stator housing. The primary planetary deceleration device cooperates with one end of the rotor shaft. The secondary planetary deceleration device cooperates with the primary planetary deceleration device and the wheel hub driving disc. The electric wheelchair direct-current brushless driving wheel structure has the characteristics of high transmission efficiency, good energy-saving effects, high operation efficiency, simple structure, manufacturing convenience, convenient assembly, convenient maintenance and flexible use.

Description

Electric wheel-chair vehicle brush DC driving wheel structure

Technical field

The utility model belongs to mankind's daily living article technical field, is specifically related to a kind of electric wheel-chair vehicle brush DC driving wheel structure.

Background technology

Electric wheel-chair vehicle claims again electric wheelchair, specific group as disabled, old and weak, medical clinical rehabilitation patient's etc. walking-replacing tool, and is no lack of the technical information that is seen in about electric wheel-chair vehicle in published Chinese patent literature, " multifunctional electric wheelchair " (being the four-wheel structure) of typically recommending as Granted publication CN2745544Y, " electric wheel-chair vehicle " that " keeping away the barrier electric wheel-chair vehicle " that CN201379725Y provides, " multifunctional electric wheelchair " that CN101589979B introduces and CN201684098U disclose etc.

The power section that is not limited to the driving wheel of the above-mentioned electric wheel-chair vehicle of enumerating generally includes motor, reduction box is reducing gear and dead electricity brake mechanism, because motor is the High-speed DC brush motor, thereby carbon brush is easy to wear and useful life is short, and operational efficiency is about the 60-70% left and right, and energy loss is larger; Reducing gear is comprised of worm and gear and spur gear decelerator, and operational efficiency is equally about the 60-70% left and right; The dead electricity brake mechanism is a kind of dead electricity brake (being electricity loss brake), and the characteristics of braking during dead electricity although discharge when having electricly are not easy to the on-position releasing when manually carrying out under power failure state, thereby causes the inconvenience in use.

At present electric wheel-chair vehicle production firm is generally compensated aforesaid power loss with the technological means that increases power of motor, but facts have proved that this is a kind of measure of controlling table but not effecting a permanent cure, although can satisfy the speed of travel of electric wheel-chair vehicle and continue the time because increase power of motor, energy consumption exceeds standard greatly.

For above-mentioned prior art, be necessary to be improved, the applicant has done positive and useful design for this reason, has finally formed technical scheme described below.

Summary of the invention

Top priority of the present utility model is to provide a kind of and helps to significantly improve operational efficiency and use and embody good energy-saving effect, be conducive to avoid wearing and tearing and use and ensure desirable useful life and be of value to the structure of simplifying reducing gear and use the remarkable electric wheel-chair vehicle brush DC driving wheel structure that improves transmission efficiency.

Another task of the present utility model is to provide a kind of electric wheel-chair vehicle brush DC driving wheel structure of being convenient to use according to carrying out manual clutch the flexibility when embodying use that has.

for top priority of the present utility model is completed in embodiment, the technical scheme that the utility model provides is: a kind of electric wheel-chair vehicle brush DC driving wheel structure, comprise a tire that is tightly placed on wheel hub, under the use state with electric wheel-chair vehicle on the fixing motor of battery case box body, be arranged in the wheel hub cavity of wheel hub and reducing gear that be connected with motor-driven, and wheel hub driving-disc that with reducing gear transmission coordinate fixing with wheel hub and be provided on motor and dead electricity brake mechanism that match with motor, wherein: a side of described wheel hub driving-disc and described wheel hub is fixed, and described motor is fixed at opposite side and the described battery case box body of corresponding wheel hub, be characterised in that: described motor comprises stator case, stator winding, rotor and armature spindle, stator case is fixed with described battery case box body under the use state, this stator case has a stator winding cavity, stator winding is arranged in the stator winding chamber, rotor is arranged in the rotor container cavity of stator winding, consist of at the middle position of this rotor a side that has from rotor and connect a rotor shaft hatch to opposite side, armature spindle is set on rotor, and nearly middle part and the rotor shaft hatch of the length direction of this armature spindle are fixed, and an end of armature spindle is stretched over outside stator case, and probe in described wheel hub cavity and be in transmission connection with described reducing gear, the other end of armature spindle is stretched over outside stator case equally, and match with described dead electricity brake mechanism, described reducing gear comprises Gearbox, one-level planetary reducer and secondary planet deceleration device, Gearbox is positioned at described wheel hub cavity and fixes with described stator case, one-level planetary reducer pivotable is arranged on Gearbox, and coordinate with a described end transmission of described armature spindle, the secondary planet deceleration device coordinates with the transmission of one-level planetary reducer and coordinates with the transmission of described wheel hub driving-disc.

In a specific embodiment of the present utility model, offer one group of driving-disc fixing hole with the interval state on described wheel hub and towards a side of described wheel hub driving-disc, offer the driving-disc fixing screw hole on the wheel hub driving-disc and in the position corresponding to the driving-disc fixing hole, wheel hub driving-disc and wheel hub are being fixed corresponding to the position of driving-disc fixing screw hole and driving-disc fixing hole by the driving-disc hold-down screw.

in another specific embodiment of the present utility model, be extended with a wheel hub pivotable supporting base at described wheel hub towards a side of the described stator case of described motor and the middle position that is positioned at this side, be provided with a pivotable block bearing and a pivotable block bearing sealing ring in the pivotable supporting base chamber of this wheel hub pivotable supporting base, described Gearbox consists of towards a side of motor and the middle position that is positioned at this side has a deceleration phase casing to connect boss, connect boss at this Gearbox and offer one group of connection boss screw hole with the interval state on the end face of stator case one end, offering one group of stator case screw hole on stator case and in the position corresponding to connection boss screw hole, be equipped with the stator case hold-down screw on each stator case screw hole, the stator case hold-down screw be connected the boss screw hole and fix, and be arranged with a bearing insert on the outer wall of Gearbox connection boss, this bearing insert matches with described pivotable block bearing, and be provided with the armature spindle block bearing within Gearbox connects the connection boss chamber of boss, consist of towards a side of described wheel hub driving-disc and the middle position that is positioned at this side at Gearbox a Gearbox supporting base is arranged, this Gearbox supporting base is bearing on wheel hub plate, the described near middle part of described armature spindle consists of a flat key, the rotor shaft hatch of this flat key and described rotor is fixed, and a described end of armature spindle and described armature spindle block bearing are rotatably assorted, the described other end of armature spindle consists of step, step matches with described dead electricity brake mechanism, described secondary planet deceleration device is coaxial with described one-level planetary reducer.

in another specific embodiment of the present utility model, consist of on described Gearbox a first gear cavity is arranged, one second largest gear cavity and a master gear chamber, first, apart 180 ° around the circumferencial direction of Gearbox of second largest gear cavities, the master gear chamber is positioned at the middle position of Gearbox, and corresponding with described connection boss chamber, described first gear cavity and second largest gear cavity all communicate with the master gear chamber, respectively be provided with a first gear shaft bearing on the chamber wall that faces each other of first gear cavity and in the position of correspondence, and respectively be provided with a second largest gear-bearing on the chamber wall that faces each other of second largest gear cavity and in the position of correspondence, described one-level planetary reducer comprises first, second largest gear shaft, first, second largest gear and master gear, first gear shaft is positioned at described first gear cavity, described first gear shaft bearing rotary on the chamber wall of one end of this first gear shaft and a side of first gear cavity movingly, and lean out this first gear shaft bearing, and the first gear shaft bearing rotary on the chamber wall of the opposite side of the other end of first gear shaft and first gear cavity movingly, second largest gear shaft is positioned at described second largest gear cavity, described second largest gear shaft bearing rotary on the chamber wall of one end of this second largest gear shaft and a side of described second largest gear cavity movingly, and lean out this second largest gear shaft bearing, and the second largest gear shaft bearing rotary on the chamber wall of the opposite side of the other end of second largest gear shaft and second largest gear cavity movingly, first gear is fixed on the middle part of the length direction of first gear shaft, second largest gear is fixed on the middle part of the length direction of second largest gear shaft, master gear is fixed on described armature spindle, and be positioned at described master gear people from chamber, this master gear is meshed with first gear and second largest gear simultaneously, described secondary planet deceleration device comprises one first pinion and one second pinion, the first pinion directly is formed in a described end of described first gear shaft, and coordinate with the transmission of described wheel hub driving-disc, the second pinion directly is formed in a described end of described second largest gear shaft, and coordinates with the transmission of described wheel hub driving-disc equally.

In another specific embodiment of the present utility model, consist of towards a side of described Gearbox at described wheel hub driving-disc a gear ring base chamber is arranged, be fixed with a gear ring in this gear ring base chamber, described the first pinion and the second pinion all are meshed with gear ring.

Also has a specific embodiment of the present utility model, consist of towards a side of described Gearbox and the middle position that is positioned at this side at described wheel hub driving-disc a driving-disc bearing pedestal is arranged, be provided with a driving-disc pivot bearings in this driving-disc bearing pedestal, this driving-disc pivot bearings is nested with on described Gearbox supporting base.

More of the present utility model and in specific embodiment, described stator case is fixed with a stator side cover towards a side of described dead electricity brake mechanism, middle position at this stator side cover is provided with a side cover bearing, the described other end of described armature spindle matches with this side cover bearing, described step is stretched over outside the side cover bearing, and matches with described dead electricity brake mechanism.

in of the present utility model and then specific embodiment, described dead electricity brake mechanism comprises yoke, coil, iron core, the first brake(-holder) block, friction plate and the second brake(-holder) block, yoke is fixed by one group of yoke hold-down screw spaced apart and described stator side cover, coil is arranged in the yoke chamber of yoke, iron core is arranged in the medium pore of coil, and be arranged with a spring on this iron core, one end bearing of this spring is established on step towards the iron core expansion of an end of the first brake(-holder) block at iron core, and the other end of spring is bearing on the chamber diapire in described yoke chamber, the first brake(-holder) block, friction plate and the second brake(-holder) block are stacked on top of each other, wherein: the second brake(-holder) block is placed in the described other end of described armature spindle in the side corresponding to friction plate, and match with described stator side cover, friction plate is fixed on the described other end of armature spindle, the first brake(-holder) block is corresponding to the opposite side of friction plate, and match with the accent in the yoke chamber of yoke, consisting of in the edge of the first brake(-holder) block and in the position corresponding to described yoke hold-down screw has one group of first brake(-holder) block pivotable to limit recessed edge, and in the edge of the second brake(-holder) block and consist of in the position corresponding to the yoke hold-down screw equally and have one group of second brake(-holder) block pivotable to limit recessed edge, described iron core expansion is established step and is matched with the first brake(-holder) block.

For another task of the present utility model is completed in embodiment, the technical scheme that the utility model provides is: be hinged with a manual clutch operating mechanism on described yoke, this manual clutch operating mechanism is connected with described iron core, and is equipped with a protective cover outside yoke.

of the present utility model again more and in specific embodiment, described manual clutch operating mechanism comprises the one handle seat, one handle and an iron core attachment screw axle, offer a gathering sill on handle set, this gathering sill matches with guide finger on the outer wall that is fixed on described yoke, and be provided with a pair of location ball at handle set towards a side of yoke, this a pair of location ball matches with location ball cavity on the outer wall that is formed in yoke, handle is fixed on handle set, and be stretched over outside described protective cover, one end of iron core attachment screw axle is connected with described iron core, and the other end is connected with described handle set after passing yoke.

The technical scheme that the utility model provides has been because reducing gear has adopted the I and II planetary reducer, thereby transmission efficiency significantly improved, and is conducive to embody good energy-saving effect; In the prior art brushless motor structure arranged owing to having abandoned, thereby avoided the frayed problem of carbon brush, and operational efficiency is significantly improved; Because overall structure is terse, thereby not only can conveniently make and assemble, and easy to use and maintenance; Owing to having set up the manual clutch operating mechanism, thereby can remove the braking of dead electricity brake mechanism when manually carrying out, embody the flexibility of using.

Description of drawings

Fig. 1 is example structure figure of the present utility model.

Fig. 2 is the cutaway view of Fig. 1.

Fig. 3 is application examples schematic diagram of the present utility model.

Embodiment

For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present utility model and beneficial effect more, the applicant general elaborates in the mode of embodiment below, but be not all restriction to the utility model scheme to the description of embodiment, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be considered as the technical solution of the utility model category.

See also Fig. 1 and Fig. 2, provided electric wheel-chair vehicle 7(Fig. 3 and shown, as follows) tire 1, according to common practise, electric wheel-chair vehicle 7 is that pair of rear wheels drives, and therefore all is equipped with motor 2 to be described in detail below, reducing gear 3, wheel hub driving-disc 4 on the tire of pair of rear wheels.Dead electricity brake mechanism 5 and manual clutch operating mechanism 6.shown in figure, tire 1 is tightly placed on wheel hub 11, wheel hub 11 consists of wheel hub cavity 111, offer one group of driving-disc fixing hole 112 with the interval state on wheel hub 11 and towards the left side that a side of wheel hub driving-disc 4 is location status shown in Figure 1, be the right side of location status shown in Figure 1 and be positioned at middle position and be extended with a wheel hub pivotable supporting base 113 towards a side of motor 2 at wheel hub 11, be provided with a pivotable block bearing 1131 and a pivotable block bearing sealing ring 1132 in the pivotable supporting base chamber of this wheel hub pivotable supporting base 113, wherein: the position of pivotable block bearing 113 in the pivotable supporting base chamber of wheel hub pivotable supporting base 113 is towards a side (being positioned at the left side) of wheel hub cavity 111, and the position of pivotable block bearing sealing ring 1132 in the pivotable supporting cavity is towards a side (being positioned at the right side) of motor 2.Because tire 1 is tightly placed on wheel hub 11, therefore just drive tyre rotation when wheel hub 11 rotation.

above mentioned motor 2 under the use state with electric wheel-chair vehicle 7 on battery case box body 71 fixing (Fig. 3 shows), this motor 2 comprises stator case 21, stator winding 22, rotor 23 and armature spindle 24, stator case 21 consists of a stator housing fixed connecting base 214, two ends at this stator case fixed connecting base 214 respectively offer stator case fixing screw hole 2141, be equipped with a stator housing fixed mount 711 on aforesaid battery case box body 71, be equipped with fixed mount screw 7111 on this stator case fixed mount 711, in the position corresponding to stator case fixing screw hole 2141, stator case fixed connecting base 214 and the stator case fixed mount 711 of battery case box body 71 are fixed (specifically can illustrate referring to Fig. 3) by fixed mount screw 7111.Stator case 21 consists of a stator winding cavity 211, stator winding 22 is embedded in this stator winding chamber 211, the middle section of stator winding 22 constitutes rotor container cavity 221, rotor 23 is arranged in this rotor container cavity 221, middle position formation at this rotor 23 has a rotor shaft hatch 231, and this rotor shaft hatch 231 connects to opposite side (right side shown in Figure 1) from a side (left side shown in Figure 1) of rotor 23.Armature spindle 24 passes rotor shaft hatch 231, and consist of at the nearly middle part of the length direction of this armature spindle 24 flat key 241 is arranged, this flat key 241 matches with keyway 2311 on the hole wall that is opened in rotor shaft hatch 231, one end (left end) of armature spindle 24 is stretched over outside stator case 21, and the wheel hub cavity 111 that is insinuated into wheel hub 11 is interior to be in transmission connection with the following reducing gear that also will describe in detail 3, and the other end of armature spindle 24 (right-hand member) is stretched over outside stator case 21 equally, and matches with the following dead electricity brake mechanism 5 that equally also will describe in detail.By shown in Figure 1, be that right-hand member shown in Figure 1 consists of a step 242 is arranged at the aforementioned other end of armature spindle 24, match with dead electricity brake mechanism 5 by this step 242.

Please see Fig. 1 by emphasis, in the aforementioned side of aforesaid stator case 21 (diagram left side) namely towards a side of wheel hub 11 and be positioned at middle position and consist of an armature spindle resigning hole 215 is arranged, offering one group of stator case screw hole 212 with the interval state around this armature spindle resigning hole 215, be equipped with stator case hold-down screw 2121 on each stator case screw hole 212, the effect of stator case hold-down screw 2121 is for being fixedly connected with the following reducing gear that will describe 3.Again, be fixed with a stator side cover 213 at stator case 21 towards a side (diagram right side) of dead electricity brake mechanism 5, position, edge at this stator side cover 213 offers one group of side cover fixing screw hole 2132 with the interval state, be equipped with a side cover hold-down screw 21321 on each side cover fixing screw hole 2132, in the position corresponding to side cover fixing screw hole 2132, that stator side cover 213 is fixing with the side cover fixing hole 216 that is preset on stator former housing 21 by side cover hold-down screw 21321.Central authorities at stator side cover 213 are provided with a side cover bearing 2131, and the described other end of aforementioned armature spindle 24 is being bearing under the state that adds spacer 243 on this side cover bearing 2131 rotationally.Again, also offer on stator side cover 213 for the power line hole 2133 of introducing external power sources to stator winding 22, power line 21,331 2133 is introduced and stator winding 22 electrical connections from this power line hole.

The reducing gear 3 that the above has mentioned is arranged in aforesaid wheel hub cavity 111, this reducing gear 3 comprises Gearbox 31, one-level planetary reducer 32 and secondary planet deceleration device 33, and Gearbox 31 is fixedly connected with the stator case 21 of aforementioned motor 2 in the interior realization of wheel hub cavity 111.One-level planetary reducer 32 is arranged on Gearbox 31 rotationally, and coordinate with a described end (left end) transmission of aforesaid armature spindle 24, and secondary planet deceleration device 33 coordinates with one group of planetary reducer 32 transmission, and coordinate with 4 transmissions of wheel hub driving-disc, namely drive one-level planetary reducer 32 by rotation axis 24, drive secondary planet deceleration device 33 by one-level planetary reducer 32, drive wheel hub driving-disc 4 by secondary planet deceleration device 33, drive wheel hub 11 by wheel hub driving-disc 4, drive tire 1 by wheel hub 11.

Offer one group of driving-disc fixing screw hole 41 on aforesaid wheel hub driving-disc 4 and in the position corresponding to aforesaid driving-disc fixing hole 112, be equipped with a driving-disc hold-down screw 411 on each driving-disc fixing screw hole 41, driving-disc hold-down screw 411 is fixing with aforesaid driving-disc fixing hole 112, thereby wheel hub driving-disc 4 is fixing with wheel hub 11, and covered by the accent on the right side of 4 pairs of wheel hub cavities 111 of wheel hub driving-disc and protect.Consisting of towards the side (illustrated right side) of Gearbox 31 at wheel hub driving-disc 4 has a gear ring base chamber 42, is fixed with a gear ring 421 in this gear ring base chamber 42, and aforesaid secondary planet deceleration device 33 matches with this gear ring 421.Again, consist of towards a side of deceleration phase casing 31 and the middle position that is positioned at this side at wheel hub driving-disc 4 a driving-disc bearing pedestal 43 is arranged, be provided with a driving-disc pivot bearings 431 in this driving-disc bearing pedestal 43, aforesaid Gearbox 31 is bearing on this driving-disc pivot bearings 431.

If aforesaid gear ring 421 directly is formed on the inwall in gear ring base chamber 42, should be considered as so equivalence and substitutes and still belong to the utility model scheme category.

Preferably; be embedded a driving-disc sealing ring 44 at wheel hub driving-disc 4 towards a side (diagram right side) of wheel hub 11; play good sealing function between wheel hub driving-disc 4 and wheel hub 11 by this driving-disc sealing ring 44, finally play being arranged at the protective effect of the reducing gear 3 in wheel hub cavity 111.

by shown in Figure 1, aforesaid Gearbox 31 consists of towards a side of motor 2 and the middle position that is positioned at this side has a Gearbox to connect boss 311, connect boss 311 at this Gearbox and offer one group of connection boss screw hole 3111 with the interval state on the end face of an end of the stator case 21 of aforementioned motor 2, the position that this group connects boss screw hole 3111 is corresponding with aforesaid stator case screw hole 212 and quantity equal, when screwing in, aforesaid stator case hold-down screw 2121 connects boss screw hole 3111 when interior, just Gearbox 31 is fixedly connected with stator case 21, namely be fixedly connected with motor 2.Be arranged with a bearing insert 3112 on the outer wall of Gearbox connection boss 311, this bearing insert 3112 matches with aforesaid pivotable block bearing 1131.Be provided with a pair of armature spindle block bearing 31131 within Gearbox connects the connection boss chamber 3113 of boss 311, aforesaid rotating shaft 24 is rotatably assorted to armature spindle block bearing 31131 with this.Narrow contracting formation has a Gearbox supporting base 315 towards the middle position of a side of aforementioned wheel hub driving-disc 4 at Gearbox 31, this Gearbox supporting base 315 matches with aforesaid driving-disc pivot bearings 431, namely is bearing on driving-disc pivot bearings 431.

Consist of a first gear cavity 312, a second largest gear cavity 313 and a master gear chamber 314 on aforesaid Gearbox 31, apart 180 ° around the circumferencial direction of Gearbox 31, first, second gear wheel chamber 312,313, that is to say that this first gear cavity 312 is positioned at a side of Gearbox 31, and second largest gear cavity 313 is positioned at the opposite side of Gearbox 31, both form aspectant position relationship each other, and first, second gear wheel chamber 312,313 communicates with each other.Respectively be provided with a first gear shaft bearing 3121 on the chamber wall that faces each other of first gear cavity 312 and in the position of correspondence, and respectively be provided with a second largest gear shaft bearing 3131 on the chamber wall that faces each other of second largest gear cavity 313 and in the position of correspondence.one-level planetary reducer 32 comprises first, second

largest gear shaft

321, 322, first, second

largest gear

323, 324 and master gear 325, first gear shaft 321 is positioned at first gear cavity 312, aforementioned first gear shaft bearing 3121 on the chamber wall of one end (left end) of this first gear shaft 321 and a side (left side) of first gear cavity 312 is rotatably assorted, and lean out this first gear shaft bearing 3121, and the aforementioned first gear shaft bearing 3121 on the chamber wall of the opposite side (right side) of the other end of first gear shaft 321 (right-hand member) and first gear cavity 312 is rotatably assorted.Second largest gear shaft 322 is positioned at second largest gear cavity 313, aforementioned second largest gear-bearing 3131 on the chamber wall of one end (left end) of this second largest gear shaft 322 and a side (left side) of second largest gear cavity 313 is rotatably assorted, and lean out this second largest gear-bearing 3131, and the aforementioned second largest gear-bearing 3131 on the chamber wall of the opposite side (right side) of the other end of second largest gear shaft 322 (right-hand member) and second largest gear cavity 313 is rotatably assorted.First gear 323 is fixed (cover is solid) at the middle part of the length direction of first gear shaft 321 by its central axis hole, and second largest gear 324 is fixed in the middle part of the length direction of second largest gear shaft 322 equally by its central axis hole.Master gear 325 is positioned at master gear chamber 314, and is fixed on armature spindle 24.By shown in Figure 2, master gear 325 both was meshed with aforesaid first gear 323, was meshed with aforesaid second largest gear 324 again, so drive simultaneously first, second gear wheel 323,324 motions by master gear 325.Aforesaid secondary planet deceleration device 33 comprises one first pinion 331 and one second pinion 332, the first pinion 331 directly is formed in a described end (left end) of aforementioned first gear shaft 321, and coordinate (being meshed) with gear ring 421 transmissions in gear ring base chamber 42 on aforesaid wheel hub driving-disc 4, the second pinion 332 directly is formed in an end (left end) of aforementioned second largest gear shaft 322, and the gear ring 421 transmissions cooperations (being meshed) in the gear ring base chamber on same and wheel hub driving-disc 4 42.

The concept that top the first pinion 331 of saying directly is formed in an end of first gear shaft 321 refers to: the left end at first gear shaft 321 directly processes the first pinion 331, the second pinions 332 with example.Yet, if will first pinion 331 be fixed on first gear shaft 321 after making separately, should be considered as form so and immaterial equivalent substitution and still belong to the disclosed technology contents category of the utility model, the second pinion 332 is with example.

please continue to see Fig. 1 and Fig. 2, the dead electricity brake mechanism 5 that the above has mentioned preferably but not the structure that definitely is limited to is as follows: comprise yoke 51, coil 52, iron core 53, the first brake(-holder) block 54, friction plate 55 and the second brake(-holder) block 56, yoke 51 by one group around the circumferencial direction of yoke 51 yoke hold-down screw spaced apart 511 with to be preset on stator former side cover 213 screw 2134 fixing, coil 52 is arranged in the yoke chamber of yoke 51, but be arranged in the medium pore of coil 52 iron core 53 plaies, and be arranged with a spring 531 on this iron core 53, one end of this spring 531 (left end shown in Figure 2) is bearing in iron core 53 and establishes on step 532 towards the iron core expansion of an end of the first brake(-holder) block 54, and the other end of spring 531 (right-hand member shown in Figure 2) is bearing on spring base 515 on the chamber diapire in the yoke chamber that is positioned at yoke 51.The first brake(-holder) block 54, friction plate 55 and the second brake(-holder) block 56 are superimposed together each other, and the second brake(-holder) block 56 is being placed in the described other end (right-hand member) of aforesaid armature spindle 24 corresponding to a side (left side shown in Figure 2) of friction plate 55, be the end of empty set outside armature spindle 24 is stretched over side cover bearing 2131, this second brake(-holder) block 56 matches with stator side cover 213.Friction plate 55 is fixed on the aforementioned other end of armature spindle 24, rotates with the rotation of armature spindle 24.The first brake(-holder) block 54 is corresponding to the opposite side (right side shown in Figure 2) of friction plate 55, and matches with the accent in the yoke chamber of yoke 51, and the medium pore of this first brake(-holder) block 54 is placed on armature spindle 24.

Shown in figure, consisting of with the interval state in the edge of the first brake(-holder) block 54 and around the circumferencial direction of the first brake(-holder) block 54 has one group of first brake(-holder) block pivotable to limit recessed edge 541(to be used for stoping the first brake(-holder) block 54 to rotate), have one group of second brake(-holder) block pivotable to limit recessed edge 561(to be used for stoping the second brake(-holder) block 56 to rotate and consist of with the interval state in the edge of the second brake(-holder) block 56 and around the circumferencial direction of the second brake(-holder) block 56), first, second brake(-holder) block pivotable limits recessed edge 541,561 and corresponds to each other.When yoke hold-down screw 511 revolves and screw 2134 on stator side cover 213 when interior, simultaneously first, second brake(-holder)

block

54,56 is limited limiting recessed edge 541,561 position corresponding to first, second brake(-holder) block pivotable by yoke hold-down screw 511, make first, second brake(-holder)

block

54,56 can only left and right displacement and the situation that can not rotate.

Preferably, can set a protective cover 512 outside aforementioned yoke 51, this protective cover 512 is made of the upper and lower casing that is fitted to each other, and adopts screw 5121 to be fixedly connected with between upper and lower casing, and namely offer one handle resigning hole 5122 on upper shell on protective cover 512.

As another technical essential of the utility model scheme, be hinged with a manual clutch operating mechanism 6 on aforesaid yoke 51, and this manual clutch operating mechanism 6 is connected with iron core 53.

Above mentioned manual clutch operating mechanism 6 preferably but not the structure that definitely is limited to is as follows: comprise one handle seat 61, one handle 62 and an iron core attachment screw axle 63, middle position in the section on the upper side of handle set 61 offers a gathering sill 611, this gathering sill 611 matches with being fixed on the guide finger 513 of aforementioned yoke 51 on the wall body of a side of handle set 61, that is to say that guide finger 513 probes in gathering sill 611.Respectively be provided with a location ball 612 in the section on the lower side of handle set 61 and the both sides that are positioned at the bottom, that is to say that location ball 612 has a pair of, this a pair of location ball 612 be formed in yoke 51 outer walls on the location ball cavity 514 of (on the wall body of a side of handle set 61) match.Handle 62 is fixed on handle set 61, more particularly, handle 62 directly extension is formed on handle set 61, and be stretched over outside protective cover 512 in the position corresponding to the handle resigning hole 5122 on aforementioned anti-bonnet 512, one end (left end) of iron core attachment screw axle 63 is connected with iron core 53, and the other end (right-hand member) is connected with handle set 61 after the resigning hole that passes on yoke 51.

due under power failure state, coil 52 dead electricity of dead electricity brake mechanism 5, so (during coil 52 energising, iron core 53 moves to right iron core 53 under the active force of spring 531, spring 531 compresses and energy storage) with the direction displacement (to left dislocation) of iron core 53 towards the first brake(-holder) block 54, iron core expands the end face of establishing step 532 the first brake(-holder) block 54 is acted on, the first 54 pairs of brake(-holder) blocks friction plate, 55 effects, that is to say that the first brake(-holder) block 54 and friction plate 55 be close to, make simultaneously armature spindle 24 slightly to left dislocation, friction plate 55 is close to the second brake(-holder) block 56 again, thereby make tire 1 be in braking state because armature spindle 24 is locked.Under this state, if coil 52 is switched on again, press so aforementioned opposite reason, iron core 53 displacement to the right, the iron core expansion of iron core 53 is established step 532 and or not first brake(-holder) block 54 is not produced braking actions, and armature spindle 24 is in nonlocking release condition, when motor 2 work, tire 1 rotates.but, there is the situation that need not to make by means of the work of motor 2 tire 1 rotation in the use procedure of reality, namely there is the situation that makes electric wheel-chair vehicle 7 walkings in the hand push mode, therefore the mode of being stepped on pin by the user under this state or the mode pulled with hand operate the handle 62 of manual clutch operating mechanism 6, specifically when handle 62 rotates an angle to a side (amplitude is determined by aforesaid gathering sill 611 rotationally), drive handle set 61 by handle 62, make a pair of location ball 612 on handle set 61 deviate from aforesaid location ball cavity 514, meanwhile drive iron core 53 (with the shown position state) displacement to the right by iron core attachment screw axle 63, remove the effect of 53 pairs of the first brake(-holder) blocks 54 of iron core, namely remove the on-position of dead electricity brake mechanism 5 after dead electricity, so can make with the method for manual implementation electric wheel-chair vehicle 7 walkings.

See also Fig. 3 and in conjunction with Fig. 1 and Fig. 2, by shown in Figure 3, the utility model structure illustrated in figures 1 and 2 and the battery case box body on electric wheel-chair vehicle 7 71 are fixing, more particularly with battery case box body 71 on stator case fixed mount 711 fixing, specifically can referring to the superincumbent description of applicant, therefore repeat no more.

When the stator winding 22 of motor 2 was switched on, the rotating magnetic field that is produced by stator winding forced rotor 23 to rotate, and because armature spindle 24 is fixedly connected with rotor 23, therefore drove armature spindle 24 by rotor and rotated.because the master gear 325 of the one-level planetary reducer 32 of reducing gear 3 is positioned on armature spindle 24, therefore master gear 325 is with armature spindle 24 rotations, drive first gear 323 and second largest gear 324 by master gear 325 simultaneously, drive first gear shaft 321 by first gear 323, drive second largest gear shaft 322 by second largest gear 324 simultaneously, because the first pinion 331 of secondary planet deceleration device 33 directly is formed on first gear shaft 321, and because the second pinion 332 of secondary planet deceleration device 33 directly is formed on second largest gear shaft 322, and first, the

second pinion

331, 332 all are meshed with gear ring 421 in the gear ring base chamber 42 of wheel hub driving-disc 4, therefore first, second largest gear shaft 321, under 322 rotation, drive respectively first, the

second pinion

331, 332 rotations, by first, the

second pinion

331, 332 drive 4 rotations of wheel hub driving-disc.Because wheel hub driving-disc 4 has the wheel hub 11 of tire 1 to be fixedly connected with tight cover, therefore drive wheel hub 11 rotations by wheel hub driving-disc 4, tire 1 rotation is ordered about electric wheel-chair vehicle 7 walkings by tire 1.When Parking is namely stopped, under the operation to the controller 71 on electric wheel-chair vehicle 7, motor 1 is quit work, coil 52 dead electricity of dead electricity brake mechanism 5, press the superincumbent description of applicant simultaneously, and electric wheel-chair vehicle 7 is in on-position.

Claims

1. ﹠lt, b TranNum="102" ﹠gt, a kind of electric wheel-chair vehicle brush DC driving wheel structure, comprise a tire (1) that is tightly placed on wheel hub (11), under the use state with electric wheel-chair vehicle on the fixing motor (2) of battery case box body, be arranged in the wheel hub cavity (111) of wheel hub (11) and reducing gear (3) that be in transmission connection with motor (2), and wheel hub driving-disc (4) that with reducing gear (3) transmission coordinate fixing with wheel hub (11) and be provided on motor (2) and dead electricity brake mechanism (5) that match with motor (2), wherein: described wheel hub driving-disc (4) is fixed with a side of described wheel hub (11), and described motor (2) is fixed at opposite side and the described battery case box body of corresponding wheel hub (11), it is characterized in that: described motor (2) comprises stator case (21), stator winding (22), rotor (23) and armature spindle (24), stator case (21) is fixed with described battery case box body under the use state, this stator case (21) has a stator winding cavity (211), stator winding (22) is arranged in stator winding chamber (211), rotor (23) is arranged in the rotor container cavity (221) of stator winding (22), consist of at the middle position of this rotor (23) side that has from rotor (23) and connect a rotor shaft hatch (231) to opposite side, armature spindle (24) is set on rotor (23), and the nearly middle part of the length direction of this armature spindle (24) and rotor shaft hatch (231) are fixing, and an end of armature spindle (24) is stretched over outside stator case (21), and probe in described wheel hub cavity (111) and be in transmission connection with described reducing gear (3), the other end of armature spindle (24) is stretched over outside stator case (21) equally, and match with described dead electricity brake mechanism (5), described reducing gear (3) comprises Gearbox (31), one-level planetary reducer (32) and secondary planet deceleration device (33), Gearbox (31) is positioned at described wheel hub cavity (111) and fixing with described stator case (21), one-level planetary reducer (32) pivotable is arranged on Gearbox (31), and coordinate with a described end transmission of described armature spindle (24), secondary planet deceleration device (33) coordinates with one-level planetary reducer (32) transmission and coordinates with described wheel hub driving-disc (4) transmission.</b>

2. electric wheel-chair vehicle brush DC driving wheel structure according to claim 1, it is characterized in that upper at described wheel hub (11) and offer one group of driving-disc fixing hole (112) towards a side of described wheel hub driving-disc (4) with the interval state, go up and offer driving-disc fixing screw hole (41) in the position corresponding to driving-disc fixing hole (12) at wheel hub driving-disc (4), in the position corresponding to driving-disc fixing screw hole (41) and driving-disc fixing hole (1112), that wheel hub driving-disc (4) and wheel hub (11) is fixing by driving-disc hold-down screw (411).

3. electric wheel-chair vehicle brush DC driving wheel structure according to claim 1, it is characterized in that being extended with a wheel hub pivotable supporting base (113) at described wheel hub (11) towards a side of the described stator case (21) of described motor (2) and the middle position that is positioned at this side, be provided with a pivotable block bearing (1131) and a pivotable block bearing sealing ring (1132) in the pivotable supporting base chamber of this wheel hub pivotable supporting base (113), described Gearbox (31) consists of towards a side of motor (2) and the middle position that is positioned at this side has a deceleration phase casing to connect boss (311), connect boss (311) at this Gearbox and offer one group of connection boss screw hole (3111) with the interval state on the end face of stator case (21) one ends, upward and in the position corresponding to connection boss screw hole (3111) offering one group of stator case screw hole (212) at stator case (21), be equipped with stator case hold-down screw (2121) on each stator case screw hole (212), stator case hold-down screw (2121) is with to be connected boss screw hole (3111) fixing, and be arranged with a bearing insert (3112) on the outer wall of Gearbox connection boss (311), this bearing insert (3112) matches with described pivotable block bearing (1131), and be provided with armature spindle block bearing (31131) in the connection boss chamber (3113) of Gearbox connection boss (311), consist of towards a side of described wheel hub driving-disc (4) and the middle position that is positioned at this side at Gearbox (31) a Gearbox supporting base (315) is arranged, this Gearbox supporting base (315) is bearing on wheel hub plate (4), the described near middle part of described armature spindle (24) consists of a flat key (241), this flat key (241) is fixing with the rotor shaft hatch (231) of described rotor (23), and a described end of armature spindle (24) and described armature spindle block bearing (31131) are rotatably assorted, the described other end of armature spindle (24) consists of step (242), step (242) matches with described dead electricity brake mechanism (5), described secondary planet deceleration device (33) is coaxial with described one-level planetary reducer (32).

4. ﹠lt, b TranNum="111" ﹠gt, electric wheel-chair vehicle brush DC driving wheel structure according to claim 3, it is characterized in that in the upper formation of described Gearbox (31), one first gear cavity (312) being arranged, one second largest gear cavity (313) and a master gear chamber (314), first, second largest gear cavity (312, 313) around the circumferencial direction of Gearbox (31) apart 180 °, master gear chamber (314) is positioned at the middle position of Gearbox (31), and corresponding with described connection boss chamber (3113), described first gear cavity (312) and second largest gear cavity (313) all communicate with master gear chamber (314), respectively be provided with a first gear shaft bearing (3121) on the chamber wall that faces each other of first gear cavity (312) and in the position of correspondence, and respectively be provided with a second largest gear-bearing (3131) on the chamber wall that faces each other of second largest gear cavity (313) and in the position of correspondence, described one-level planetary reducer (32) comprises first, second largest gear shaft (321, 322), first, second largest gear (323, 324) and master gear (325), first gear shaft (321) is positioned at described first gear cavity (312), described first gear shaft bearing (3121) on the chamber wall of one side of one end of this first gear shaft (321) and first gear cavity (312) is rotatably assorted, and lean out this first gear shaft bearing (3121), and the first gear shaft bearing (3121) on the chamber wall of the opposite side of the other end of first gear shaft (321) and first gear cavity (312) is rotatably assorted, second largest gear shaft (322) is positioned at described second largest gear cavity (313), described second largest gear shaft bearing (3131) on the chamber wall of one side of one end of this second largest gear shaft (322) and described second largest gear cavity (313) is rotatably assorted, and lean out this second largest gear shaft bearing (3131), and the second largest gear shaft bearing (3131) on the chamber wall of the opposite side of the other end of second largest gear shaft (322) and second largest gear cavity (313) is rotatably assorted, first gear (323) is fixed on the middle part of the length direction of first gear shaft (321), second largest gear (324) is fixed on the middle part of the length direction of second largest gear shaft (322), master gear (325) is fixed on described armature spindle (24), and be positioned at described master gear chamber (314) people, this master gear (325) is meshed with first gear (323) and second largest gear (324) simultaneously, described secondary planet deceleration device (33) comprises one first pinion (331) and one second pinion (332), the first pinion (331) directly is formed in a described end of described first gear shaft (321), and coordinate with described wheel hub driving-disc (4) transmission, the second pinion (332) directly is formed in a described end of described second largest gear shaft (322), and coordinates with described wheel hub driving-disc (4) transmission equally.</b>

5. Electric wheel-chair vehicle brush DC driving wheel structure according to claim 4, it is characterized in that towards a side formation of described Gearbox (31), a gear ring base chamber (42) being arranged at described wheel hub driving-disc (4), be fixed with a gear ring (421) in this gear ring base chamber (42), described the first pinion (331) and the second pinion (332) all are meshed with gear ring (421).

6. Electric wheel-chair vehicle brush DC driving wheel structure according to claim 3, it is characterized in that consisting of towards a side of described Gearbox (31) and the middle position that is positioned at this side at described wheel hub driving-disc (4) a driving-disc bearing pedestal (43) is arranged, be provided with a driving-disc pivot bearings (431) in this driving-disc bearing pedestal (43), this driving-disc pivot bearings (431) is nested with on described Gearbox supporting base (315).

7. electric wheel-chair vehicle brush DC driving wheel structure according to claim 3, it is characterized in that described stator case (21) is fixed with a stator side cover (213) towards a side of described dead electricity brake mechanism (5), middle position at this stator side cover (213) is provided with a side cover bearing (2131), the described other end of described armature spindle (24) matches with this side cover bearing (2131), described step (242) is stretched over outside side cover bearing (2131), and match with described dead electricity brake mechanism (5).

8. ﹠lt, b TranNum="123" ﹠gt, electric wheel-chair vehicle brush DC driving wheel structure according to claim 7, it is characterized in that described dead electricity brake mechanism (5) comprises yoke (51), coil (52), iron core (53), the first brake(-holder) block (54), friction plate (55) and the second brake(-holder) block (56), yoke (51) is fixing by one group of yoke hold-down screw (511) spaced apart and described stator side cover (213), coil (52) is arranged in the yoke chamber of yoke (51), iron core (53) is arranged in the medium pore of coil (52), and be arranged with a spring (531) on this iron core (53), one end bearing of this spring (531) is established on step (532) towards the iron core expansion of an end of the first brake(-holder) block (54) at iron core (53), and the other end of spring (531) is bearing on the chamber diapire in described yoke chamber, the first brake(-holder) block (54), friction plate (55) and the second brake(-holder) block (56) are stacked on top of each other, wherein: the second brake(-holder) block (56) is placed in the described other end of described armature spindle (24) in the side corresponding to friction plate (55), and match with described stator side cover (213), friction plate (55) is fixed on the described other end of armature spindle (24), the first brake(-holder) block (54) is corresponding to the opposite side of friction plate (55), and match with the accent in the yoke chamber of yoke (51), consisting of in the edge of the first brake(-holder) block (54) and in the position corresponding to described yoke hold-down screw (511) has one group of first brake(-holder) block pivotable to limit recessed edge (541), there be one group of second brake(-holder) block pivotable to limit recessed edge (561) and consist of in the position corresponding to yoke hold-down screw (511) in the edge of the second brake(-holder) block (56) and equally, described iron core expansion is established step (532) and is matched with the first brake(-holder) block (54).</b>

9. Electric wheel-chair vehicle brush DC driving wheel structure according to claim 8, it is characterized in that being hinged with a manual clutch operating mechanism (6) on described yoke (51), this manual clutch operating mechanism (6) is connected with described iron core (53), and is equipped with a protective cover (512) outside yoke (51).

10. ﹠lt, b TranNum="129" ﹠gt, electric wheel-chair vehicle brush DC driving wheel structure according to claim 9, it is characterized in that described manual clutch operating mechanism (6) comprises one handle seat (61), one handle (62) and an iron core attachment screw axle (63), offer a gathering sill (611) on handle set (61), this gathering sill (611) matches with guide finger (513) on the outer wall that is fixed on described yoke (51), and be provided with a pair of location ball (612) at handle set (61) towards a side of yoke (51), this a pair of location ball (612) matches with location ball cavity (514) on the outer wall that is formed in yoke (51), handle (62) is fixed on handle set (61), and be stretched over outside described protective cover (512), one end of iron core attachment screw axle (63) is connected with described iron core (53), and the other end is connected with described handle set (61) after passing yoke (51) ﹠lt, / b ﹠gt,