CN201383743Y

CN201383743Y - Rotor unit of generation wheel hub

Info

Publication number: CN201383743Y
Application number: CN200920006764U
Authority: CN
Inventors: 廖贵堂; 陈浚钦
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-16
Filing date: 2009-03-16
Publication date: 2010-01-13
Anticipated expiration: 2019-03-16

Abstract

The utility model relates to a rotor unit of a generation wheel hub, which comprises a shell, a magnet ring arranged in the shell and a shell cover screwed on the shell. The shell comprises a side wall, a ring wall which extends from the side wall along an axis, and a first bearing hole which is arranged on the side wall. The ring wall is provided with a first diameter section, an internal threaded section and a second diameter section which are subsequently around the axis from outside to inside; the first diameter section is provided with a first inner hole diameter, and the second diameter is provided with a second inner hole diameter which is smaller than the first inner hole diameter. The shell cover comprises an outer surrounding wall and a second bearing hole which corresponds to the first bearing hole. The outer surrounding wall is provided with an outer side section which is tightly matched and sleeved with the first diameter section, an inner side section which is tightly matched and sleeved with the second diameter section, and an external threaded section which is matched with the internal threaded section.

Description

The rotor unit of bicycle generator hub

Technical field

The utility model relates to a kind of bicycle generator hub, particularly relates to a kind of rotor unit of bicycle generator hub.

Background technology

It mainly is to be made of a stator and a rotor that a bicycle generator hub, this bicycle generator hub are normally adopted in the Regular Bicycle generating, and this stator is to be installed on one along on the axle of axis extension, and this rotor is around this stator and can rotates with respect to this stator.

U.S. Patent number discloses a kind of rotor structure No. 7288865, it is to adopt the position on a left side, right, the centre is totally three member be combined intos, wherein be positioned at a left side, the member of right both sides has the screw thread that is spirally connected with intermediate member respectively, and the dead eye that provides a bearing to be provided with, member inboard in the middle of being positioned at is provided with a magnet ring, when this rotor is assembled, first shortcoming that produces is that three members are made up of the mode of being spirally connected fully, and helicitic texture is gapped, a so that left side, the dead eye center of right both sides can't be aimed at accurately, dynamic balancing is bad when causing running, when second shortcoming is that tool using carries out screw lock, instrument damages a left side easily, the appearance of right side pieces, the 3rd shortcoming is that the inside of intermediate member lacks the structure of this magnet ring of location, so that this magnet ring is with respect to the location of the loop construction in this stator inaccuracy.

Another kind of rotor structure then is shown in No. the 6093985th, U.S. Patent number, it is to adopt a housing and a cap to combine, be provided with screwed hole around corresponding between this housing and this cap, can be both combinations are fixing by a plurality of screws, so can avoid the face of defacing, but assembling shortcoming of taking a lot of work more consuming time is arranged, in addition both in conjunction with the time, owing to can be located at an inner magnet ring in the clamping location, so this magnet ring also can be located accurately with respect to the coil in the stator, yet, still can't improve the gap that helicitic texture causes, two dead eye centers that lay respectively on this housing and this cap still can't be aimed at accurately, and the dynamic balancing when causing running is bad.

The utility model content

The purpose of this utility model is to be to provide a kind of rotor unit that can allow the dead eye center can aim at accurate bicycle generator hub.

The rotor unit of this bicycle generator hub is to be used for relative stator unit rotation, this stator unit is to be installed in one along on the axle of axis extension, this rotor unit comprises a housing, one magnet ring and a cap, this housing comprises a sidewall around this axis, one ring wall that extends along this axis from this sidewall, and one be formed at this sidewall and corresponding to the clutch shaft bearing hole of this axle, this magnet ring is to be arranged in this housing, this cap is in this housing along this axis direction involution, and comprise an outer surrounding wall around this axis, and second dead eye corresponding to this axle and this clutch shaft bearing hole.

Of the present utility model being characterised in that: the ring wall of this housing has one first footpath section, an internal thread segment and the one second footpath section that centers on this axis from outside to inside in regular turn, this first footpath section has one first internal orifice dimension, this second footpath section has second internal orifice dimension less than this first internal orifice dimension, and this internal thread segment is to be connected between this first and second footpath section; This magnet ring is to be arranged at this second footpath section; The outer surrounding wall of this cap has one and cooperates the external thread section of this internal thread segment with the medial segment and of this second footpath section tight fit socket with the segmentum laterale, of this first footpath section tight fit socket, and this cap is to be bolted in this housing along this axis direction.

The beneficial effects of the utility model are: when this housing, this magnet ring and this cap are assembled, because this first footpath section forms a location contact-making surface with the mutual tight fit of this segmentum laterale, this second footpath section forms another location contact-making surface with the also mutual tight fit of this medial segment, even if therefore the helicitic texture between two location contact-making surfaces has the gap, can guarantee that also this cap and this housing have splendid concentricity, reach and make this first and second dead eye center can aim at accurately dynamic balancing excellent function during running.

Description of drawings

Fig. 1 is a three-dimensional exploded view, and the preferred embodiment of the rotor unit of the utility model bicycle generator hub is described;

Fig. 2 is an exploded view, and the structure of a housing, a magnet ring and a cap is described in the above preferred embodiment; And

Fig. 3 is a schematic diagram, illustrates that above preferred embodiment cooperates a stator unit to be combined in the combining structure of an axle.

Embodiment

Below in conjunction with drawings and Examples the utility model is elaborated:

As shown in Figure 1, 2, 3, the preferred embodiment of the rotor unit 200 of the utility model bicycle generator hub is to be used for 900 rotations of a relative stator unit, this stator unit 900 is to be installed in one along on the axle 90 of axis X extension, and this rotor unit 200 comprises a housing 20, a magnet ring 30 and a cap 40.

This housing 20 comprises the ring wall 22 that a sidewall 21 around this axis X, extends along this axis X from this sidewall 21, and one is formed at this sidewall 21 and corresponding to the clutch shaft bearing hole 23 of this axle 90.

This ring wall 22 has one first footpath section, 221, one internal thread segment 222, one second footpath section, 223 and 1 the 3rd footpath section 224 that extends to this sidewall 21 from outside to inside in regular turn around this axis X.

This first footpath section 221 has one first internal orifice dimension d1.

This second footpath section 223 has second an internal orifice dimension d2 less than this first internal orifice dimension d1.

This internal thread segment 222 is to be connected between this first and second footpath section 221,223.

The 3rd footpath section 224 has the 3rd an internal orifice dimension d3 less than this second internal orifice dimension d2.

This magnet ring 30 is to be arranged at the footpath of second in this housing 20 section 223 with centering on this axis X, and has two opposite magnet ends 31 that are provided with.

This cap 40 comprises that an outer surrounding wall 41, around this axis X is connected in the interior surrounding wall 42 of these outer surrounding wall 41 inboards, and second dead eye 43 corresponding to this axle 90 and this clutch shaft bearing hole 23.

Should outer surrounding wall 41 have one with the segmentum laterale 411 of these first footpath section 221 tight fit sockets, one with the medial segment 412 of these second footpath section 223 tight fit sockets, reach the external thread section 413 of this internal thread segment 222 of cooperation.

Should in surrounding wall 42 have an opposing appearance 421, a plurality of working hole 422 that is arranged with from this appearance 421 in this sidewall 21, and one around this axis X and the work nest 423 that is arranged with of this appearance 421 certainly.

Described working hole 422 be equal angles be distributed in this axis X around and be connected with this work nest 423.

This stator unit 900 is to be coated in this housing 20, this cap 40 be along this axis X direction be spirally connected with involution in this housing 20, and then make that the magnet end 31 of this magnet ring 30 is the contact location that are subjected to the 3rd footpath section 224 and this medial segment 412 respectively.

Whereby, when this housing 20, when this magnet ring 30 and this cap 40 are assembled, because this first footpath section 221 forms a location contact-making surface with these segmentum laterale 411 mutual tight fits, this second footpath section 224 forms another location contact-making surface with the also mutual tight fit of this medial segment 412, even if therefore the helicitic texture between two location contact-making surfaces has the gap, can guarantee that also this cap 40 has splendid concentricity with this housing 20, reach make this first, two dead eyes 23,43 centers can be aimed at accurately, dynamic balancing excellent function during running, simultaneously since the magnet end 31 of this magnet ring 30 can both by the 3rd footpath section 224 and this medial segment 412 against, make this accurate function in magnet ring 30 location so can also reach, described working hole 422 is to cooperate when being used to assemble an instrument 91 to use, therefore this work nest 423 and described working hole 422 can reach this appearance 421 and be not easy by the function of use of this instrument 91 damages from these appearance 421 indents.

Claims

1. the rotor unit of a bicycle generator hub, be to be used for relative stator unit rotation, described stator unit is to be installed in one along on the axle of axis extension, described rotor unit comprises a housing, one magnet ring and a cap, described housing comprises a sidewall around described axis, one ring wall that extends along described axis from described sidewall, and one be formed at described sidewall and corresponding to the clutch shaft bearing hole of described axle, described magnet ring is to be arranged in the described housing, described cap is in described housing along described axis direction involution, and comprise that one centers on the outer surrounding wall of described axis, and second dead eye corresponding to described axle and described clutch shaft bearing hole, described rotor unit is characterised in that:

The ring wall of described housing has one first footpath section, an internal thread segment and the one second footpath section that centers on described axis from outside to inside in regular turn, the described first footpath section has one first internal orifice dimension, the described second footpath section has second internal orifice dimension less than described first internal orifice dimension, and described internal thread segment is to be connected between described first and second footpath section;

Described magnet ring is to be arranged at the described second footpath section; And

The outer surrounding wall of described cap have one with the segmentum laterale of the described first footpath section tight fit socket, one with the medial segment of described second footpath section tight fit socket, and the external thread section of the described internal thread segment of a cooperation, described cap is to be bolted in described housing along described axis direction.

2. according to the rotor unit of the described bicycle generator hub of claim 1, it is characterized in that: the ring wall of described housing also has the 3rd footpath section that the described second footpath section that continues extends to described sidewall, described the 3rd footpath section has the 3rd internal orifice dimension less than described second internal orifice dimension, and described magnet ring has two opposite magnet ends that are provided with and are resisted against respectively described the 3rd footpath section and described medial segment.

3. according to the rotor unit of the described bicycle generator hub of claim 1, it is characterized in that: described cap comprises that also one is connected in the interior surrounding wall of described outer surrounding wall inboard, in described surrounding wall have one opposing in the appearance of described sidewall, and a plurality of working holes that are arranged with from described appearance.

4. according to the rotor unit of the described bicycle generator hub of claim 3, it is characterized in that: surrounding wall also has one around described axis and the work nest that is arranged with from described appearance in described, and described working hole is that equal angles ground is distributed in being connected of described axis on every side and with described work nest.