WO2014061059A1 - Vehicle speed detection device for vehicles and bicycle - Google Patents

Abstract

A vehicle speed detection device for vehicles, having: a holding member (31) comprising a magnetism generator (30) and rotatable together with a wheel having a hub (17) in the center thereof; and a detector (32) that detects the magnetism of the magnetism generator (30). The detector (32) is fixed on the car body (2) side and the holding member (31) is attached to the flange (23) of the hub (17) by an attachment means (34).

Description

Vehicle speed detection device for vehicle and bicycle

The present invention relates to a vehicle speed detection device for detecting a vehicle speed of, for example, a bicycle, and a bicycle provided with the vehicle speed detection device.

Conventionally, as a vehicle speed detection device for detecting a vehicle speed of a bicycle or the like, there is a system of detecting magnetism of a plurality of magnets rotating together with a front wheel, and calculating a traveling speed based on this. The plurality of magnets are provided on the holding member. The holding member is attached to the outside of the spokes of the front wheel in the axial direction of the axle of the front wheel. Also, a magnetic detection device for detecting the magnetism of the magnet is fixed to the front fork.

The retaining member is attached to the spokes by a fixing bracket and a bolt. The fixing bracket is disposed on the inside of the spoke in the axial direction of the axle and is connected to the holding member by a bolt. Thereby, the plurality of spokes are sandwiched between the holding member and the fixing bracket, and the holding member is fixed to the plurality of spokes.

The vehicle speed detection device having the mounting structure for holding the plurality of spokes between the holding member and the fixing bracket as described above is described, for example, in Patent Document 1 below.

Moreover, there are the following as another attachment structure.

A plurality of magnets are provided on the holding member, and the holding member is attached to the outside of the spokes of the front wheel in the axial direction of the axle of the front wheel. The holding member is divided into an annular hub fitting part and an annular magnet encoder provided radially outward of the hub fitting part. The magnet encoder is fastened to the spokes by a band tie and the hub fitting is sandwiched by the magnet encoder and the spokes and the hub flange portion.

The vehicle speed detection device having the mounting structure for fastening the magnet encoder to the spoke by the binding tie as described above is described, for example, in Patent Document 2 below.

Japanese Patent Application JP, 2010-164459,

However, in each of the conventional vehicle speed detection devices described above, since the holding member is attached to the spokes of the front wheel, the bicycle may fall over, or the front wheel may collide with an obstacle or the like to bend the spoke or If it breaks, an excessive force is generated at the mounting portion between the holding member and the spoke, causing damage to the mounting portion, part of the holding member is detached from the spoke, and the mounting of the holding member to the front wheel becomes incomplete There's a problem. In such a case, when the front wheel rotates, the holding member vibrates abnormally, which may reduce the detection accuracy of the vehicle speed.

Further, in the vehicle speed detection device having the mounting structure for holding the plurality of spokes between the holding member and the fixing bracket described in Patent Document 1 above, in order to mount the holding member, two types of fixing brackets and bolts are provided. Parts for mounting are required, and there is a problem that the types of parts other than the holding member increase, and there is a problem that it takes time to attach the holding member.

Moreover, while the holding member is disposed outside the spoke, the fixing bracket and the bolt are disposed inside the spoke, so the fixing bracket and the bolt are attached from the side opposite to the holding member. There is a problem that it takes time to attach the fixing bracket and the bolt.

Further, in the vehicle speed detection device having a mounting structure in which the magnet encoder is fastened to the spoke using the binding tie described in Patent Document 2 described above, one end of the binding tie is inserted into the through hole of the magnet encoder from the outside It winds around, and it inserts in the through-hole next to a magnet encoder from inner side, it is pulled out outside, and it has penetrated the head of binding tie. Therefore, there is a problem that it takes time to attach the magnetic encoder to the spokes.

The present invention makes it easy to mount the holding member and can reduce the types of mounting parts for mounting the holding member. Even if the spokes of the wheel are bent or broken, the holding member can be used. An object of the present invention is to provide a vehicle speed detection device and a bicycle of a vehicle capable of preventing inadvertent removal from wheels.

In order to achieve the above object, the first invention comprises a holding member which is rotatable with a wheel having a hub at its central portion and provided with a magnetic generator, and a detector for detecting the magnetism of the magnetic generator. ,
A vehicle speed detection device for a vehicle in which a detection body is fixed to a vehicle body side,
The holding member is attached to the hub of the hub by the attachment means.

According to this, since the holding member is attached not to the spokes of the wheel but to the heel of the hub, the holding member does not separate from the heel of the hub even if the spokes bend or break. Therefore, it is possible to prevent the holding member from coming off carelessly from the wheel.

In the vehicle speed detection device for a vehicle according to the second aspect of the present invention, the holding member is provided with a first opening that opens on both sides in the axial direction of the axle.
The mounting means has a contact portion and a detachment prevention member,
The abutment portion is provided on the holding member, and abuts on the outside of the hub heel in the axial direction of the axle,
The detachment prevention member has a first engagement portion, and is detachably provided to the holding member,
The first engaging portion is inserted into the first opening and engaged with the inside of the hub wedge in the axial direction of the axle.

According to this, the contact portion of the holding member is brought into contact with the outside of the wedge of the hub, and the detachment preventing member is attached to the holding member. At this time, the first engaging portion of the separation preventing member is inserted into the first opening and engaged with the inside of the wedge of the hub, whereby the holding member is detached outward from the wedge of the hub in the axial direction of the axle. Can be prevented. Furthermore, since the contact portion of the holding member is in contact with the outside of the heel of the hub, the holding member can be prevented from being disengaged inward in the axial direction of the axle from the heel of the hub.

As a result, since the holding member can be attached to the hub of the hub using one type of separation preventing member as a member separate from the holding member, the types of mounting parts can be reduced, and the holding member can be easily made. Can be attached to

In the vehicle speed detection device for a vehicle according to the third aspect of the present invention, the detachment prevention member has a second engagement portion,
The holding member is provided with an engaged portion engaged with the second engaging portion, and a second opening opened on both sides in the axial direction of the axle.
The second engaging portion is inserted into the second opening and engaged with the engaged portion from the inside to the outside in the axial direction of the axle.

According to this, the first engagement portion of the detachment preventing member is inserted into the first opening and engaged with the inside of the hook of the hub, and the second engagement portion is inserted into the second opening and the engaged portion As a result, the detachment prevention member can be easily attached to the holding member, and the holding member can be easily attached to the hook of the hub.

In the vehicle speed detection device for a vehicle according to the fourth aspect of the present invention, the insertion direction of the first engagement portion into the first opening and the insertion direction of the second engagement portion into the second opening are respectively the axial centers of the axles. It is the direction from the outside to the inside in the direction.

According to this, the first engaging portion of the separation preventing member is inserted into the first opening from the outer side in the axial center direction of the axle and the second engaging portion is inserted into the second opening, whereby Since the detachment prevention member can be attached to the retention member from the same side (i.e., the outer side) as the retention member, the detachment prevention member can be easily attached.

In the vehicle speed detection device for a vehicle according to the fifth aspect of the present invention, the engaged portion is formed in the second opening.

According to this, the first engagement portion of the detachment preventing member is inserted into the first opening and engaged with the inside of the hook of the hub, and the second engagement portion is inserted into the second opening and the engaged portion The engagement preventing member can be easily attached to the holding member.

In the vehicle speed detection device for a vehicle according to the sixth aspect of the present invention, the second engaging portion is expandable and contractible in the radial direction of the heel of the hub, and is inserted into the second opening in a state compressed in the radial direction and engaged It engages with the part.

According to this, since the second engaging portion reliably engages with the engaged portion, the second engaging portion is inadvertently removed from the second opening toward the outside in the axial direction of the axle. It can be prevented.

In the vehicle speed detection device for a vehicle according to the seventh aspect of the invention, the attachment means has a plurality of holding claws,
These holding claws are provided on the holding member, and engage with the outer peripheral edge of the wedge from the inside of the wedge of the hub in the axial direction of the axle.

According to this, when the plurality of holding claws are engaged with the outer peripheral edge of the collar from the inside of the collar of the hub, the holding member is more firmly attached to the collar, and the holding member extends outward from the collar in the axial direction of the axle. Withdrawal can be prevented more reliably. In addition, since the holding member is centered by the plurality of holding claws, the axis of the holding member can be aligned with the axis of the axle.

An eighth invention is a bicycle characterized in that the vehicle speed detection device according to any one of the first to seventh inventions is provided.

According to this, when running the bicycle, the magnetism generating body of the holding member rotates with the wheels, and the detecting body detects the magnetism of the magnetism generating body, whereby the traveling speed of the bicycle is detected.

As described above, according to the present invention, mounting of the holding member is easy, and it is possible to reduce the types of mounting parts for mounting the holding member. In addition, even if the spokes of the wheel bend or break, it is possible to prevent the holding member from being inadvertently detached from the wheel.

FIG. 1 is a side view of an electric bicycle according to a first embodiment of the present invention. It is a side view of the vehicle speed detection apparatus with which the electric bicycle was equipped similarly. It is a perspective view of a vehicle speed detection apparatus equally. It is a perspective view of the back side (opposite side) of a vehicle speed detection apparatus equally. It is sectional drawing of the hub part of the front wheel of an electric bicycle the same. It is a perspective view of the holding member of the vehicle speed detection apparatus equally. Similarly, it is a perspective view of the back side (opposite side) of the holding member of a vehicle speed detection apparatus. Similarly, it is a perspective view of the detachment prevention member of a vehicle speed detection apparatus. Similarly, it is a sectional view of a vehicle speed detection device. It is sectional drawing which similarly shows the attachment procedure of the detachment prevention member of a vehicle speed detection apparatus. It is sectional drawing which similarly shows the attachment procedure of the detachment prevention member of a vehicle speed detection apparatus. It is sectional drawing which similarly shows the attachment procedure of the detachment prevention member of a vehicle speed detection apparatus. It is sectional drawing of the vehicle speed detection apparatus in the 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First Embodiment
In the first embodiment, as shown in FIG. 1, 1 is an electric bicycle which is an example of a vehicle, and the electric bicycle 1 is a pedaling force of a vehicle body 2, a front wheel 3, a rear wheel 4 and a pedal 5. Is transmitted to the rear wheel 4, an electric auxiliary drive unit 7 for applying an auxiliary driving force to the chain 6, a vehicle speed detection unit 8 and the like.

The vehicle body 2 has a frame body 10 and a front fork 11 provided at the front of the frame body 10. The front fork 11 has a pair of left and right fork feet 12 and a fork claw 13 (see FIG. 2) provided at the lower end of the fork foot 12. The fork claw 13 has a slit portion (not shown) whose lower portion is opened. Further, the frame body 10 has a down pipe 10a, a standing pipe 10b, a back fork 10c, a chain stay 10d and the like.

The front wheel 3 is provided radially between the tire 15, a rim 16 provided on the inner periphery of the tire 15, a hub 17 provided at the center, an axle 18, and the hub 17 and the rim 16. It has a plurality of spokes 19. As shown in FIG. 5, the hub 17 includes a cylindrical portion 21, a bearing housing portion 22 provided at both ends of the cylindrical portion 21, a pair of left and right ridges 23 formed on the outer periphery of the bearing housing portion 22, and a bearing housing A plurality of balls 24 housed in the portion 22, a ball push 25 for pressing the ball 24 into the bearing housing portion 22, a lock nut 26 for tightening the ball push 25 toward the inner side D1 in the axial direction A of the axle 18; have.

The axle 18 is inserted into the cylindrical portion 21, and the ball push 25 and the lock nut 26 are screwed to the axle 18, and the ball 24 is sandwiched between the bearing housing 22 and the ball push 25. As shown in FIG. 3, the hook 23 is formed with a plurality of locking holes 27, and the inner end of the spoke 19 is locked in the locking hole 27.

Both ends of the axle 18 are inserted into the slit portion of the fork claw 13, and the axle 18 is connected to the fork claw 13 by nuts 28 screwed to both ends of the axle 18, whereby the front wheel 3 is a front fork 11. Attached to

The vehicle speed detection device 8 includes a plurality of magnets 30 (an example of a magnetism generator) and a holding member 31 rotatable with the front wheel 3 and a detection body 32 for detecting the magnetism of the magnets 30.

As shown in FIG. 5, the holding member 31 is attached to one of the left and right hooks 23 of the hub 17 by the attachment means 34. The attachment means 34 includes a plurality of contact portions 36, a plurality of holding claws 42, and a plurality of detachment preventing members 43 described below.

As shown in FIGS. 5 to 7, the holding member 31 is a resin-made disk-like member having a circular shaft insertion port 37 at the center, and the overlapping portion 35 and a square are provided around the shaft insertion port 37. It has a plurality of first and second openings 38, 39 of a shape. The shaft insertion opening 37 and the first and second openings 38 and 39 are open at both the inner and outer sides of the holding member 31 in the axial direction A. Also, the magnet 30 is inserted into the inside of the holding member 31. The plurality of contact portions 36 are formed to project from the overlapping portion 35 and contact the outer surface of the wedge 23 in the axial direction A. In the state where the holding member 31 is attached, the overlapping portion 35 faces the wedge 23 at a predetermined distance from the outer side D2 in the axial direction A.

The radially inner end of each first opening 38 is in communication with the shaft insertion port 37. Each second opening 39 is formed on the outer side of the first opening 38 in the radial direction, and the first opening 38 and the second opening 39 are located on the same straight line in the radial direction.

An engaged portion 40 is formed inside each second opening 39. The engaged portion 40 is a stepped portion formed on the radially outer surface in the second opening 39, and protrudes inward in the radial direction.

The plurality of holding claws 42 are made of resin, and are integrally provided on the holding member 31 and arranged around the shaft insertion port 37, and engaged with the inner peripheral edge D1 to the outer peripheral edge of the collar 23 in the axial direction A It is possible. The holding claws 42 are located between the first openings 38 in the circumferential direction.

As shown in FIGS. 4 and 5, the holding member is engaged with the outer peripheral edge of one of the collars 23 in a state where the axle shaft 18 is inserted through the shaft insertion port 37 of the holding member 31. 31 is attached to the rod 23 The plurality of detachment prevention members 43 are members that prevent the retention member 31 from being inadvertently detached from the collar 23, and are provided on the retention member 31 so as to be removable. As shown in FIGS. 8 and 9, each detachment preventing member 43 is a metal channel-shaped member, has a first engaging portion 44 at one end, and a second engaging portion 45 at the other end. And has a flat contact plate portion 46 between the first engagement portion 44 and the second engagement portion 45.

The first engaging portion 44 of the detachment preventing member 43 is inserted into the first opening 38 of the holding member 31. The first engagement portion 44 is formed in an L shape, and the first engagement piece 44a engageable with the inner side surface in the axial direction A of the outer peripheral edge portion of the weir 23 is formed at the tip thereof. Have.

Further, the second engaging portion 45 of the detachment preventing member 43 is inserted into the second opening 39 of the holding member 31. The second engagement portion 45 is formed in a V shape, and the second engagement piece is engageable with the engagement portion 40 at the tip end portion from the inner side D1 to the outer side D2 in the axial direction A. It has 45a. The second engaging portion 45 is expandable and contractible in the radial direction C, and is inserted into the second opening 39 and engaged with the engaged portion 40 in a state of being compressed in the radial direction C.

The insertion direction B of the first engagement portion 44 into the first opening 38 and the insertion direction B of the second engagement portion 45 into the second opening 39 are respectively from the outside D2 in the axial direction A. It is the direction of D1.

As shown in FIGS. 2, 3 and 5, the detection body 32 has a detection element such as a reed switch for detecting magnetism, and is fixed to the front fork 11 (an example of a vehicle body) via the fixing member 33. It is done. That is, the detection body 32 is attached to the fixing member 33, the mounting hole 47 is formed in the fixing member 33, and one end of the axle 18 is inserted into the mounting hole 47. The fixing member 33 is connected and fixed to the one fork foot 12 by being sandwiched between the fork claw 13 and the nut 28.

Hereinafter, the operation in the above configuration will be described.

With the front wheel 3 removed from the front fork 11, the vehicle speed detection device 8 is attached as follows. First, as shown in FIG. 9, the axle 18 is inserted into the shaft insertion port 37 of the holding member 31 to which the magnet 30 is attached, and the contact portion 36 of the holding member 31 is in contact with the outer surface of the collar 23 of the hub 17 And the plurality of holding claws 42 are engaged with the inner periphery D1 of the collar 23 of the hub 17 to the outer peripheral edge of the collar 23.

Next, as shown in FIG. 10, the contact plate portion 46 of the separation preventing member 43 is parallel to the axis 18a of the axle 18, and as shown in FIG. 11, the first engagement portion 44 of the separation preventing member 43 is outside. After inserting D2 into the first opening 38 of the holding member 31 and thereafter, as shown in FIG. 12, the direction of the separation preventing member 43 is turned 90 ° about the first engaging portion 44, and the contact plate 46 is The second engaging portion 45 is inserted into the second opening 39 of the holding member 31 from the outer side D 2 so as to be orthogonal to the axial center 18 a of the axle 18. As a result, as shown in FIG. 9, the first engagement piece 44a of the first engagement portion 44 engages with the inner surface of the outer peripheral edge portion of the collar 23, and the second engagement portion 45 in the radial direction C. After being compressed, the second engagement piece 45a passes through the engaged portion 40 in the insertion direction B, and immediately thereafter, the second engagement portion 45 is expanded in the radial direction C, and the second engagement piece 45a is inward. Engage with the engaged portion 40 from D1.

As described above, since the detachment preventing member 43 can be attached to the holding member 31 from the same side (i.e., the outer side D2) as the holding member 31 with respect to the front wheel 3, the detachment preventing member 43 can be attached easily. Thereby, the holding member 31 can be easily attached to the hook 23 of the hub 17.

Since the first engagement piece 44a of the first engagement portion 44 is engaged with the inner side surface of the outer peripheral edge portion of the collar 23 in the state where the detachment prevention member 43 is attached to the retention member 31, the retention member 31 is a hub It is possible to prevent the detachment of the 17 ridges 23 to the outer side D2 in the axial direction A.

Furthermore, since the plurality of holding claws 42 are engaged with the outer peripheral edge of the collar 23 from the inner side D1, the holding member 31 is more firmly attached to the collar 23 and the holding member 31 is the outer side in the axial direction A from the collar 23 Withdrawal to D2 can be prevented more reliably. Further, since the holding member 31 is centered (centered) by the plurality of holding claws 42, the axis of the holding member 31 can be aligned with the axis 18 a of the axle 18.

In addition, since the contact portion 36 of the holding member 31 is in contact with the outer surface of the collar 23 of the hub 17, it is possible to prevent the holding member 31 from being detached from the collar 23 to the inner side D1 in the axial direction A. .

In addition, since the second engaging portion 45 is engaged with the engaged portion 40 in a state of being compressed in the radial direction C, the second engaging portion 45 is outside of the second opening 39 in the axial direction A Careless removal to D2 can be prevented.

As described above, since the holding member 31 can be attached to the front wheel 3 using one kind of separation preventing member 43 as a member different from the holding member 31, a mounting part for attaching the holding member 31 You can reduce the type of

Thereafter, as shown in FIG. 5, the detection body 32 is attached to the fixing member 33, the both ends of the axle 18 are inserted into the slits of the two fork claws 13, and one end of the axle 18 is inserted into the mounting hole 47 of the fixing member 33. The nut 28 is screwed onto the opposite ends of the axle 18 and tightened. Thereby, as shown in FIGS. 2 and 3, the front wheel 3 is connected to the fork claw 13 and attached to the fork 11, and the fixing member 33 is sandwiched between one fork claw 13 and the nut 28. Therefore, the detection body 32 is fixed to one of the fork feet 12 via the fixing member 33, and the vehicle speed detection device 8 is attached to the electric bicycle 1.

When the electric bicycle 1 is traveling, the magnets 30 of the holding member 31 rotate with the front wheel 3, and the detection speed of the electric bicycle 1 is detected by detecting the magnetism of the magnets 30 passing by the detector 32. It is detected.

Further, since the holding member 31 is attached not to the spokes 19 of the front wheel 3 but to the ridge 23 of the hub 17, the holding member 31 is separated from the ridge 23 even if the spoke 19 is bent or broken. There is nothing to do. Accordingly, it is possible to prevent the holding member 31 from being inadvertently detached from the front wheel 3.

Second Embodiment
In the first embodiment, as shown in FIG. 9, the first engaging portion 44 of the detachment preventing member 43 is L-shaped, and the second engaging portion 45 is V-shaped. For example, the shape of the first engaging portion 44 of the detachment preventing member 43 and the shape of the second engaging portion 45 are interchanged so as to be opposite to those of the first embodiment. It is also good. That is, as the second embodiment, as shown in FIG. 13, the shape of the first engaging portion 44 of the separation preventing member 43 may be V-shaped, and the shape of the second engaging portion 45 may be L-shaped. .

According to this, the first engagement piece 44a of the first engagement portion 44 engages with the inner surface of the outer peripheral edge portion of the collar 23, and the second engagement piece 45a of the second engagement portion 45 is engaged The detachment preventing member 43 is attached to the holding member 31 by engaging with the portion 40.

In the first and second embodiments, as shown in FIGS. 10 to 12, the detachment preventing member 43 can be attached to the holding member 31 from the outer side D2 in the axial direction A, but the opposite side, ie, the inner side It may be attachable to the holding member 31 from D1.

In the first and second embodiments, as shown in FIG. 2, the detection member 32 is attached to the front fork 11 using the fixing member 33. However, the detection member 32 is not used using the fixing member 33. May be attached directly to the front fork 11. Further, the fixing member 33 may be integrally formed on the front fork 11.

In the first and second embodiments, as shown in FIG. 1, the holding member 31 is provided on the front wheel 3, and the fixing member 33 provided with the detection body 32 is provided on the front fork 11. The traveling speed of the electric bicycle 1 is obtained from the rotational speed of the rear wheel 4. However, the holding member 31 is provided on the rear wheel 4, and the fixing member 33 provided with the detection body 32 is provided on the back fork 10c. The traveling speed of the electric bicycle 1 may be determined from the above.

In the first and second embodiments, the electric bicycle 1 is exemplified as an example of the vehicle, but the invention is not limited to the electric bicycle 1 and, for example, a general not including the electric auxiliary drive device 7 The present invention can also be applied to a bicycle or a motorcycle.

Claims (8)

A holding member which is rotatable with a wheel having a hub at its central portion and provided with a magnetic generator, and a detector for detecting the magnetism of the magnetic generator,
A vehicle speed detection device for a vehicle in which a detection body is fixed to a vehicle body side,
A vehicle speed detection device for a vehicle, wherein the holding member is attached to the hub of the hub by attachment means. The holding member is formed with a first opening opening on both sides in the axial direction of the axle,
The mounting means has a contact portion and a detachment prevention member,
The abutment portion is provided on the holding member, and abuts on the outside of the hub heel in the axial direction of the axle,
The detachment prevention member has a first engagement portion, and is detachably provided to the holding member,
2. The vehicle speed detection device for a vehicle according to claim 1, wherein the first engaging portion is inserted into the first opening and engaged with the inside of the heel of the hub in the axial direction of the axle. The detachment prevention member has a second engagement portion,
The holding member is provided with an engaged portion engaged with the second engaging portion, and a second opening opened on both sides in the axial direction of the axle.
The vehicle speed detection device for a vehicle according to claim 2, wherein the second engaging portion is inserted into the second opening and engaged with the engaged portion from the inside to the outside in the axial direction of the axle. The insertion direction of the first engagement portion into the first opening and the insertion direction of the second engagement portion into the second opening are respectively from the outside to the inside in the axial direction of the axle. The vehicle speed detection device for a vehicle according to claim 3. The vehicle speed detecting device for a vehicle according to claim 3 or 4, wherein the engaged portion is formed in the second opening. The second engaging portion is expandable and contractible in the radial direction of the heel of the hub, and is inserted into the second opening in a state where the second engaging portion is compressed in the radial direction and engages with the engaged portion. The vehicle speed detection apparatus of the 5 description. The mounting means has a plurality of retaining claws,
7. The holding claws according to claim 2, wherein the holding claws are provided on the holding member and engage with the outer peripheral edge of the collar from the inside of the hub in the axial direction of the axle. The vehicle speed detection device for a vehicle according to claim 1. A bicycle comprising the vehicle speed detection device according to any one of claims 1 to 7.

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