CN201323501Y - Hub generator structure for bicycle - Google Patents

Abstract

The utility model discloses a hub generator structure for a bicycle, that is, a generator is arranged at the axis center in a hub shell, a magnet group is arranged on the outer periphery of a coil unit of the generator, and two corresponding yoke iron groups are arranged, the magnet group is composed of a plurality of magnets arranged in a ring shape, the magnet is made of sintered neodymium iron boron, one side is an N pole, and the other side is an S pole, each magnet on one side of the magnet group is arranged in a ring shape with an N pole and an S pole alternately, a yoke claw is arranged on the outer periphery of the yoke iron group, the two yoke iron groups are respectively matched and limited by the two sides of the coil unit, and the yoke claw is located at the outer circle of the coil unit, thereby forming a generator with small volume, light weight, high voltage and power.

Description

Hub Dynamo Structure for Bicycle

technical field

The utility model relates to a generator structure, in particular to a hub generator structure for a bicycle which is installed on the hub of a bicycle and generates current with the forward power of the bike. Improvement, so that a smaller space has greater power generation.

Background technique

At present, the generators of most bicycles are installed in the hub, and the power of the wheels is used to drive the rotor of the generator relative to the stator to achieve the effect of generating electricity. However, the rotor and stator of the current generator, one of which is a permanent magnet, The other is the yoke, and the permanent magnets are currently made of anisotropic bonded NdFeB, so that the permanent magnet can become a cylindrical shape, and can be used to generate electricity in conjunction with the yoke. This bonded NdFeB The manufactured cylindrical permanent magnet uses magnetization and alignment in the radial direction, and the magnetic energy product that can be generated is only 3-12MGoe, and the voltage and power emitted are small. To generate relatively large power and voltage, it is necessary to increase The size of the cylindrical permanent magnet makes the bicycle flower hub for placing the generator relatively larger. If the flower hub is too large, it is not only more difficult to cooperate with the wheel, but also increases the weight of the bicycle and reduces the value of the bicycle.

Utility model content

The technical problem to be solved by the utility model is to provide a bicycle hub generator structure, which can be used to form a generator with small volume, light weight and high voltage and power. The small problem of voltage and power, and in order to obtain the required voltage and power, the design of the hub is larger, which increases the weight of the bicycle and reduces the value of the bicycle.

In order to solve the above-mentioned technical problems, a bicycle hub generator structure of the utility model includes: a hub shell, a shaft, a generator and a hub cover, wherein the hub shell is equipped with There is an accommodating groove opening to one side, and an axis through hole is provided in the accommodating groove, and a coupling section is provided in the center of the axis, the axis is set in the hub shell, and one end protrudes from the axis through hole , the generator, fixed at the joint section of the axis, includes: a coil unit, coils are wound around the periphery; Arrangement composition, the magnet is made of sintered NdFeB, one side is N pole, the other side is S pole, and the N pole and S pole arranged on the two sides of two adjacent magnets are different, that is, the magnet group on one side The N poles and S poles of each magnet are alternately arranged in a ring shape, and the magnets are set on the periphery of the coil unit, instead of being linked with the coil unit, they are combined with the inner periphery of the hub shell to move together; two yokes are assembled , which is composed of yoke iron rings matching the number of magnets. The outer end of the yoke iron is provided with yoke claws. The two yoke iron groups are respectively abutted and fixed by the two sides of the coil unit. The yoke iron group surrounds the coil unit, and the yoke claws are arranged on the outer ring of the coil unit, and the yoke claws respectively correspond to the magnets; the center of the hub cover is pierced with a shaft hole, and the hub cover is locked in the housing of the hub shell At the opening of the slot, the other end of the shaft protrudes from the shaft hole, and the hub cover is used to suspend and fix the magnet group on the hub shell on the outer periphery of the coil unit.

Due to the adoption of the above structure, in the bicycle hub generator structure of the present invention, the magnets of the magnet group are made of sintered NdFeB, and the magnetic energy product produced is as high as 35-53MGoe. The magnets are arranged in a ring, one side of the magnet is N pole, the other side is S pole, and the two sides of each magnet are arranged in a staggered manner with one N pole and the other S pole, and then used with two opposite yoke groups, that is It can be installed in the hub shell with the smallest specification, not only can reduce and lighten the volume and weight of the hub shell, but also the generator has the characteristics of high voltage and power.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

Fig. 1 is the three-dimensional assembled figure of the utility model;

Fig. 2 is a three-dimensional exploded view of the utility model;

Fig. 3 is a combined sectional view of the utility model;

Fig. 4 is the three-dimensional assembly diagram of the generator of the present utility model;

Fig. 5 is the combined sectional view of the generator of the present utility model;

Fig. 6 is a structural perspective view of the magnet group of the present utility model;

Fig. 7 is another structural perspective view of the magnet group of the present invention;

Fig. 8 is another structural perspective view of the magnet group of the present invention;

Fig. 9 is a three-dimensional combination diagram of another embodiment of the utility model;

Fig. 10 is a combined sectional view of another embodiment of the utility model.

Fig. 11 is a three-dimensional combined view of another embodiment of the utility model;

Fig. 12 is a combined sectional view of another embodiment of the utility model;

Fig. 13 is a three-dimensional combined view of another embodiment of the utility model;

Fig. 14 is a combined sectional view of another embodiment of the utility model.

Wherein, among the above reference numerals, the hub shell 10, the accommodating groove 11, the shaft center hole 12, the shaft center 20, the joint section 21, the clamping edge 22, the stator locking section 23, the nut locking section 24, the power generation Machine 30, coil unit 31, magnet set 32, magnet 320, N pole 321, S pole 322, yoke iron set 33, yoke iron 330, yoke claw 332, generator pressure plate 34, stator nut 35, magnet groove 370, magnet Ring frame 37, hub cap 40, shaft center perforation 41, bearing 50, waterproof rubber ring 60, joint inner top 70, connector 80, shaft center nut 90.

Detailed ways

In order to have a further understanding and understanding of the purpose, features and efficacy of the present utility model, in conjunction with the accompanying drawings, the details are as follows:

As shown in Figures 1 to 14, at first, as known from Figures 1, 2 and 3, the bicycle hub generator structure of the present invention includes:

A hub shell 10 is provided with an accommodating groove 11 opening to one side, and an axial through hole 12 is provided in the accommodating groove 11;

An axis 20, the middle section is provided with a coupling section 21, the coupling section 21 is provided with a protruding locking edge 22 on one side, and a stator locking section 23 is provided on the other side, and the two ends of the axis 20 are respectively provided with a nut lock knot section 24, the axis 20 is set in the hub shell 10, and one end protrudes from the axis through hole 12;

A generator 30 is fixed at the coupling section 21 of the axis 20, and is shown in Figures 4, 5 and 6, including:

A coil unit 31, the periphery is wound with a coil;

A magnet group 32 is a ring-shaped body, which is composed of a plurality of even-numbered magnets 320 arranged in a ring. The magnets 320 are made of sintered NdFeB, with N poles 321 on one side and S poles on the other side. poles 322, and the N poles 321 and S poles 322 arranged on the two sides of two adjacent magnets 320 are different, that is, each magnet 320 on one side of the magnet group 32 is N poles 321 and S poles 322 arranged alternately in a ring shape. The group 32 is arranged on the periphery of the coil unit 31, instead of interlocking with the coil unit 31, it is combined with the inner periphery of the hub shell 10 to interlock;

The two yoke groups 33 are composed of yokes 330 that match the number of magnets 320. The outer ends of the yokes 330 are provided with yoke claws 332. The two yoke groups 33 are respectively abutted and combined by the two sides of the coil unit 31. fixed, the yoke iron set 33 surrounds and covers the coil unit 31, and the yoke claws 332 are arranged on the outer ring of the coil unit 31, and the yoke claws 332 respectively correspond to the magnets 320;

Two generator pressing plates 34 are pressed together by the outside of the two yoke groups 33;

A stator nut 35, the coil unit 31 and the second yoke group 33 of the generator 30 are arranged on the joint section 21 of the axis 20, one side is positioned by the locking edge 22, and the other side is locked on the stator nut 35. The stator locking section 23 is fixed;

A hub cover 40, with an axis through hole 41 in the center, the hub cover 40 is locked at the opening of the accommodation groove 11 of the hub shell 10, the other end of the axis 20 is pierced by the axis 41 Stretch out, use the hub cover 40 to suspend and fix the magnet set 32 on the hub shell 10 on the outer periphery of the coil unit 31;

Two bearings 50 are respectively arranged in the hub shell 10 and the axle center holes 12 and 41 of the hub cover 40 to provide the axle center 20 to bear and pass through;

Two waterproof rubber rings 60 are respectively arranged on the outer sides of the hub shell 10 and the axle center holes 12, 41 of the hub cover 40;

A joint inner top 70 is arranged on the outer side of the one bearing 50;

A connector 80 is located on the outer side of the inner top 70 of the joint, and is electrically connected to the two poles of the coil of the coil unit 31 of the generator 30; and

The two shaft nuts 90 are locked to the nut locking sections 24 at the two ends of the shaft 20 for fixing the shaft 20 through the member.

When the bicycle moves forward, the bicycle wheel and the hub shell 10 rotate simultaneously, and the magnet set 32 of the generator 30 is driven between the two relative yoke sets 33 , the two yoke sets 33 are connected to the axle center 20 Combined with being fixed and not rotating, the coil unit 31 generates electromotive force to generate electricity.

Wherein, the magnet group 32 has multiple types under the same structure:

As shown in FIG. 6 , the plurality of magnets 320 on the magnet set 32 are integrally formed into an annular body, and the N pole 321 and the S pole 322 are on the left and right sides of the ring body relative to the magnet set 32 .

Then, as shown in FIG. 7 , the plurality of magnets 320 on the magnet group 32 are formed separately, and then a magnet ring frame 37 is used to fix the plurality of magnets 320 into a ring shape. The magnet slot 370 is used to provide the arrangement of the magnet 320 . The N pole 321 and the S pole 322 are ring-shaped left and right sides relative to the magnet set 32 and the magnet ring frame 37 .

As shown in FIG. 8 , the plurality of magnets 320 on the magnet set 32 are integrally formed into an annular body, and the N pole 321 and the S pole 322 are opposite to the inner and outer peripheral sides of the magnet set 32 .

Wherein, the generator 30 has multiple types under the condition that the aforementioned basic structure remains unchanged:

As shown in Figures 4 and 5, the magnet set 32 is located in the middle section of the coil unit 31, and the yoke iron 330 of the two yoke iron set 33 is half of the number of the magnet 320, and the shape is symmetrically arranged, and is wrapped in a mating manner. The coil unit 31 is covered, and one end of the yoke 330 is provided with a yoke claw 332, and the yoke claws 332 of the two yoke iron groups 33 are correspondingly arranged, and are respectively located on the left and right sides of the corresponding magnet 320, corresponding to the same The N pole 321 and the S pole 322 of the magnet 320 , and the outer periphery of the magnet set 32 is fixed to the middle periphery of the accommodating groove 11 of the hub shell 10 .

As shown in Figures 9 and 10, the magnet group 32 is located on one side of the outer periphery of the coil unit 31, the yoke 330 of the two yoke groups 33 is half the number of the magnet 320, and the first yoke group 33 is short. The other yoke set 33 is arranged symmetrically in long shape, covering the coil unit 31 in a mating manner, and one end of the yoke 330 is provided with a yoke claw 332, and the yoke claws 332 of the two yoke iron sets 33 are correspondingly arranged. and are respectively located on the left and right sides of the corresponding magnet 320, corresponding to the N pole 321 and the S pole 322 of the same magnet 320, and the outer periphery of the magnet group 32 is offset from the periphery of the housing groove 11 of the hub shell 10. The side perimeter is fixed.

As shown in Figures 8, 11, and 12, the magnet group 32 is located on one side of the coil unit 31, the yoke 330 of the two yoke groups 33 is half the number of the magnet 320, and the first yoke group 33 is short. The other yoke set 33 is arranged symmetrically in long shape, covering the coil unit 31 in a mating manner, and one end of the yoke 30 is provided with a yoke claw 332, and the yoke claws 332 of the two yoke iron sets 33 are correspondingly arranged. and are respectively located on the inner and outer peripheral sides of the corresponding magnet 320, corresponding to the N pole 321 and the S pole 322 of the same magnet 320, and one side of the magnet group 32 is fixed to the bottom of the accommodation groove 11 of the hub shell 10 , or be fixed with the end face of the hub cap 40 .

Finally, as shown in Figures 13 and 14, the magnet group 32 is arranged on one side of the outer periphery of the coil unit 31, and the yokes 330 of the two yoke groups 33 are respectively half of the number of the magnets 320, and cover the coils respectively. Unit 31, and the two ends of the yoke 330 are respectively provided with a yoke claw 332, the yoke claws 332 at the two ends are respectively located on the left and right sides of the magnet 320, the yoke claws 332 of the two yoke iron groups 33 And it is arranged in a staggered manner, and the outer periphery of the magnet set 32 is fixed to the periphery of the accommodating groove 11 of the hub shell 10 .

Through the structure of the specific embodiment above, the following effects can be obtained: the magnet 320 of the magnet group 32 used in the utility model is made of sintered NdFeB, and the magnetic energy product of the magnet 320 made of this kind of sintered NdFeB is as high as 35～ 53MGoe, the magnet group 32 is arranged in a ring with plural and even numbers of magnets 320, one side of the magnets 320 is an N pole 321, the other side is an S pole 322, and the two sides of each magnet 320 are connected with an N pole 321 on the other. One S pole 322 is arranged in a staggered manner, combined with the use of two opposite yoke sets 33, it can be installed in the hub shell 10 with the smallest specification, not only can reduce and lighten the volume and weight of the hub shell 10 , which can produce a generator 30 with high voltage and power.

Claims (10)

1, a kind of bicycle use Hub power generator structure, it is characterized in that: this structure comprises:

One hub shell body, inside are provided with the storage tank of an opening to a side, in this storage tank and be provided with axle center perforation;

One axle center, stage casing are provided with an adapter section, and this axle center is located in this hub shell body, and an end is stretched out by this axle center perforation;

One generator is located at the adapter section in this axle center and is fixed, and it includes: a coil unit, and periphery is wound with coil; One magnetite group, it is a ring bodies, this ring bodies is made up of plural number and the annular arrangement of even numbers magnetite, and this magnetite is that sintered NdFeB is made, and a side is the N utmost point, opposite side is the S utmost point, and the N utmost point that these each adjacent magnetite two sides are arranged is extremely different with S, and promptly each magnetite of this magnetite group one side is that the N utmost point and the S utmost point are staggered circlewise, and this magnetite is mounted on this coil unit periphery, and not with this coil unit interlock, combine and interlock with the inboard periphery of this hub shell body; Two yoke groups, by the yoke that cooperates this magnetite quantity around forming, this yoke outer end is provided with the yoke pawl, this two yokes group is involutory and in conjunction with fixing by these coil unit two sides respectively, this yoke group is enclosed and is coated this coil unit, and this yoke pawl is located at this coil unit outer ring, and this yoke pawl is respectively to should magnetite;

One flower hub cap, the center wears axle center perforation, this flower hub cap is locked in the storage tank opening part of this hub shell body, and this axle center other end is also stretched out by the perforation of this axle center, with this flower hub cap with on unsettled this hub shell body that is fixed in these coil unit outer peripheral edges of this magnetite group.

2, bicycle use Hub power generator structure as claimed in claim 1, it is characterized in that: described generator also comprises: two generator pressing plates and a stator nut, the adapter section in this axle center is established a card that protrudes on one side and is become attached to, another side is established stator lock knot section, this generator pressing plate is by this two yokes group outside pressing, the coil unit of this generator and two yokes are mounted on the adapter section in this axle center, Yi Bian be subjected to this card location of becoming attached to, it is fixing that another side is locked in this stator lock knot section with this stator nut.

3, bicycle use Hub power generator structure as claimed in claim 1 is characterized in that: two ends in described axle center respectively are provided with nut lock knot section, also comprise:

Two bearings, the axle center perforation of being located at this hub shell body and flower-drum lid respectively provides this this axle center bearing to wear;

Two waterproof plastic rings are located at respectively outside the axle center perforation of this hub shell body and this flower-drum lid;

This one bearing outside is located on top in one joint;

A connector is located at the outside, top in this joint, and electrically connects the coil of the coil unit of this generator; And

Two axle center nuts, the nut lock that is locked on these axle center two ends is tied section, fixes in order to this axle center is worn member.

4, bicycle use Hub power generator structure as claimed in claim 1, it is characterized in that: the plural magnetite on the described magnetite group is integrally formed as ring bodies, the ring bodies left and right side of this N utmost point and very relative this magnetite group of this S.

5, bicycle use Hub power generator structure as claimed in claim 1, it is characterized in that: the plural magnetite on the described magnetite group is formed by shaping out of the ordinary, utilize a magnetite ring stand that plural magnetite is fixed into a ring-type again, these magnetite ring stand outer peripheral edges equidistantly are provided with the plurality of magnetic stone cistern, provide the setting of this magnetite, the ring-type left and right side of very relative this magnetite group of this N utmost point and this magnetite ring stand with this magnetite groove with this S.

6, bicycle use Hub power generator structure as claimed in claim 1, it is characterized in that: the plural magnetite on the described magnetite group is integrally formed as ring bodies, the inside and outside periphery side of this N utmost point and very relative this magnetite group of this S.

7, bicycle use Hub power generator structure as claimed in claim 1, it is characterized in that: described magnetite is mounted on this coil unit stage casing, the yoke of this two yokes group is half of this magnetite quantity, and be shaped as and be symmetrical arranged, coat this coil unit in involutory mode, and this yoke one end is provided with the yoke pawl, the yoke pawl of this two yokes group is corresponding the setting, and lay respectively at left and right two sides that should magnetite, to the N utmost point and the S utmost point that should same magnetite, and this magnetite group is fixed with the storage tank stage casing periphery of outer peripheral edges and this hub shell body.

8, bicycle use Hub power generator structure as claimed in claim 1, it is characterized in that: described magnetite is mounted on the inclined to one side side of these coil unit outer peripheral edges, the yoke of this two yokes group is half of this magnetite quantity, and short another yoke group leader of a yoke group is shaped as and is symmetrical arranged, coat this coil unit in involutory mode, and this yoke one end is provided with the yoke pawl, the yoke pawl of this two yokes group is corresponding the setting, and lay respectively at a left side that should magnetite, right two sides, to the N utmost point and the S utmost point that should same magnetite, and this magnetite group is fixed with the inclined to one side side periphery of the storage tank periphery of outer peripheral edges and this hub shell body.

9, bicycle use Hub power generator structure as claimed in claim 1, it is characterized in that: described magnetite is mounted on the inclined to one side side of this coil unit, the yoke of this two yokes group is half of this magnetite quantity, and short another yoke group leader of a yoke group is shaped as and is symmetrical arranged, coat this coil unit in involutory mode, and this yoke one end is provided with the yoke pawl, the yoke pawl of this two yokes group is corresponding the setting, and lay respectively in should magnetite, the outer peripheral edges side, to the N utmost point and the S utmost point that should same magnetite, and this magnetite group is fixing with the storage tank bottom of a side and this hub shell body, or fixes with this flower hub cap end face.

10, bicycle use Hub power generator structure as claimed in claim 1, it is characterized in that: described magnetite is mounted on the inclined to one side side of these coil unit outer peripheral edges, the yoke of this two yokes group is respectively half of this magnetite quantity, and coat this coil unit respectively, and these yoke two ends respectively are provided with a yoke pawl, the yoke pawl of this two end lays respectively at left and right two sides that should a magnetite, the yoke pawl of this two yokes group also is the setting of staggering, and this magnetite group is fixed with the storage tank periphery of outer peripheral edges and this hub shell body.

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