JP2001171592A - Lock device for electric assisted bicycle - Google Patents

Abstract

(57) [Problem] To easily lock and unlock wheels and a battery. SOLUTION: When a push rod 45 provided between a seat post 23 and a battery 4 is pushed down, a lock lever disposed at a tip of the push rod 45 meshes with a gear on a crank shaft 101. The drive sprocket 13 is rigidly attached to the rear sprocket, and the rear wheel WR is locked by locking the gear on the crankshaft.
The cam surface provided on the side surface of the push rod is in contact with the battery hook 50, so that the hook 50 can be engaged with the concave portion of the battery 4 simultaneously with the locking of the wheel. To lift the push rod 45 to release the lock, a solenoid 42 that can be operated by remote control is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device for an electric assist bicycle, and more particularly to a lock device for an electric assist bicycle that can serve both as a battery lock device and a wheel lock device as a power source for an electric motor for assisting pedaling force. .

[0002]

2. Description of the Related Art A wheel lock device for locking a rear wheel of a bicycle by projecting an arc-shaped lock bar, a battery lock device for locking an engagement piece provided on a battery, and these can be individually unlocked. 2. Description of the Related Art A locking device for a bicycle with an electric assist power in which a cylinder lock and a cylinder lock are integrally housed in one case is known (Japanese Patent Application Laid-Open No. 11-36681).

[0003]

SUMMARY OF THE INVENTION In an electric assisted bicycle,
Since a power unit including a motor and a battery serving as a power supply for the motor are mounted, the vehicle weight tends to increase. Therefore, in order to reduce the weight as much as possible, simplification of the structure of the lock device is required, and easy attachment and detachment of the battery for charging and replacement are also required.

However, the locking device described in the above publication has a mechanism for locking the rear wheel behind the seat. Therefore, in a structure in which the battery is mounted behind the seat post that holds the seat, the battery is inserted and removed. Sometimes the locking device may get in the way. Further, when the tire size is different, the mounting position of the lock device must be adjusted accordingly, which may complicate the manufacturing process. Further, the demand for reducing the weight of the vehicle by using both the locking device for the rear wheel and the locking device for the battery must be satisfied.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the conventional device and to reduce the weight of the vehicle while improving the operability of attaching and detaching the battery and facilitating the manufacture. It is to provide a device.

[0006]

In order to achieve the above object, the present invention provides a lock device for an electric assist bicycle having an electric assist unit for assisting treading force, which is incorporated in the electric assist unit and follows a rear wheel. The first feature is that a rotating body that rotates by rotating the rotating body and a lock unit that engages with the rotating body to regulate the rotation of the rotating body is provided. The second feature is that the battery lock means is also used to prohibit
There is a feature. According to the first feature, the rotation of the rotating body is regulated by the lock means, so that the rotation of the rear wheel is also regulated. According to the second feature, the removal of the battery is also prohibited.

Further, the present invention is characterized in that the lock means comprises a lock lever disposed opposite to the rotating body, and a push rod for urging the lock lever toward the rotating body to engage the same. Has a third feature. According to the third feature, the lock lever is limited to a position facing the rotating body, but the push rod has a degree of freedom in arrangement, and can be set in consideration of operability.

Further, the present invention includes a seat post erected adjacent to the front of the electric auxiliary unit, and the battery supporting means supports the battery in a vertically long position above the electric auxiliary unit. The fourth feature is that the push rod is disposed between a seat post and a battery supported by the battery support means, and an upper end of the push rod is supported by the battery support means. A fifth feature lies in that the battery is disposed so as to be located at substantially the same height as the upper surface of the battery to be used. 4th
According to the feature, since the push rod is provided between the seat post and the battery, that is, at a position that is difficult to be seen from the outside, it is difficult to induce a mischief by another person. Also,
According to the fifth feature, the operability is good because the upper end of the push rod, that is, the operation portion does not extremely protrude from the upper portion of the battery and does not protrude from the battery.

Further, the present invention includes a hook means engaged with a battery supported by the battery supporting means,
A sixth feature is that the hook means is configured to engage with the battery in response to a biasing operation of the lock lever by the push rod. According to the sixth feature, the rotation of the rear wheel is restricted by the operation of the push rod, and at the same time, the hook means can be engaged with the battery.

Further, the present invention provides a lock means for maintaining a push rod, in which the lock lever is pushed down to a position where the lock lever is engaged with the rotating body, at that position, and an electric means for releasing the lock by the lock means at the position. There is a seventh feature in that a switch unit for giving the electric means an electrical command for instructing release of the lock includes a receiving unit for receiving a lock release command by a wireless signal. The point has an eighth feature. A ninth feature is that the switch means also serves as a power switch means for receiving the lock release command and turning on the power of the electric auxiliary unit.

According to the seventh feature, only the movement of the push rod at the time of unlocking is performed by the electric means, and the operation of the push rod at the time of locking is manually depressed. . According to the eighth and ninth features, the unlocking is performed by a wireless remote controller. In particular, according to the ninth feature, the unlocking operation can be performed simultaneously with turning on the power of the electric auxiliary unit.

Still further, according to the present invention, the battery support means has a contact adapted to a discharge contact provided below the battery to be mounted, and the hook means of the battery is arranged close to the contact. A tenth feature is that the lock lever is provided on the upper part of the electric auxiliary unit, and the electric means is mounted on the seat post close to the upper part of the electric auxiliary unit.

According to the tenth feature, since the battery is fixed to the battery support means near the discharge contact, instantaneous loosening (contact jump) of the contact due to vibration can be prevented. Further, the lock lever and the electric means are arranged in or near the electric auxiliary unit, so that the mass (mass) can be concentrated near the electric auxiliary unit as a whole.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of an electric assist bicycle to which the lock device for an electric assist bicycle of the present invention is applied, and FIG.
FIG. 3 is an enlarged view of a main part in FIG. 1, and FIG. 3 is a perspective view of a battery mounted on the electric assisted bicycle and a storage case thereof. The body frame 2 of the battery-assisted bicycle includes a head pipe 21 located in front of the vehicle body, a down pipe 22 extending downward and rearward from the head pipe 21, and a seat post 23 rising upward from near the end of the down pipe 22. Prepare. The joint between the down pipe 22 and the seat post 23 and the periphery thereof are vertically divided into two parts and a resin cover 33 to be attached and detached.
(FIG. 2 shows a cross section). A steering handle 27 is rotatably inserted into an upper portion of the head pipe 21 via a handle post 27A.
A front fork 26 connected to a handle post 27A is supported at a lower portion of the front fork 26. Front fork 26
A front wheel WF is rotatably supported at the lower end of the shaft.

An electric auxiliary unit 1 including an electric motor M for assisting pedaling is provided at a lower portion of the vehicle body frame 2 at a connecting portion 92 at a lower end of the down pipe 22 and at a front portion of a battery bracket 49 welded to the seat post 23. The connection part 91 provided and the connection part 90 at the rear of the bracket 49 are bolted and suspended at three places. In the connecting portion 90, the chain stay 25 is fastened together with the electric auxiliary unit 1.

The power switch unit 29 of the electric auxiliary unit 1
Is provided near the head pipe 21 on the down pipe 22 so as to be turned on / off by a power key.
The power switch 29 may be provided on the handle 27 in front of the handle post 27A. The power supply auxiliary unit 1 can be turned on by a remote control switch (described later) using an infrared signal, for example. In this case, the power switch unit 29 is provided with a receiver for receiving an infrared signal transmitted from the remote control switch.

The electric auxiliary unit 1 is provided with a driving sprocket 13, and the rotation of the crankshaft 101 is transmitted from the driving sprocket 13 to the rear sprocket 14 through the chain 6. The drive sprocket 13 and the rear sprocket 14 are rigidly mounted in order to enable regenerative power generation, that is, mounting such that even if one of both sprockets rotates in any direction, the other rotates following it. Has become.

The handle 27 is provided with a brake lever 27B. The operation of the brake lever 27B is transmitted to a brake device (not shown) of the rear wheel WR through a brake wire 39. Further, the brake wire 39 branches to the electric auxiliary unit 1, and the operation of the brake lever 27 </ b> B is also transmitted as a displacement of the brake wire 39 to a cam for operating a regenerative power generator described later.

In this bicycle, since the joint between the down pipe 22 and the seat post 23 is laid out at the front of the electric auxiliary unit 1, the electric auxiliary unit 1 can be arranged at a low position and the center of gravity is reduced. ing. Further, since the height of the body frame 2 can be kept low, "easiness of straddling" is also good.

The electric auxiliary unit 1 includes a crankshaft 101
Are rotatably supported, and a pedal 12 is pivotally supported at both left and right ends of the crankshaft 101 via a crank 11.
A rear wheel WR as a driving wheel is supported between the ends of a pair of left and right chain stays 25 extending rearward from the electric auxiliary unit 1. A pair of left and right seat stays 24 is provided between the upper portion of the seat post 23 and the end of both chain stays 25. In the seat post 23,
A seat pipe 31 provided with the seat 30 at the upper end is slidably mounted in the seat post 23 so that the vertical position of the seat 30 can be adjusted.

A battery storage case 5 for storing the battery 4 is provided below the seat 30 and behind the seat post 23.
(Hereinafter, referred to as a “storage case”). The battery 4 includes a plurality of battery cells, and is installed along the seat post 23 such that the longitudinal direction is substantially up and down.

At the upper end of the battery 4 in the longitudinal direction, a handle 41 for the battery 4 is provided (see FIG. 3). The handle 41 is normally pressed against the corner of the battery 4, and is used with the shaft 41a as a fulcrum at the time of attachment and detachment. Generally, the driver often stands on the left side of the vehicle body, so that the handle 41 is preferably arranged so that it can be raised from the right side of the vehicle body as shown in FIG. A charge remaining meter 42 is provided on the upper side of the battery 4, and when the push button 43 is pressed, the charge remaining is displayed. The remaining charge meter 42 is provided on the left inclined surface so that it is easy to see from the upper left of the seat 30 and the remaining battery level can be checked from above while the driver is standing.

Between the battery case 5 and the seat post 23, there is provided a push rod 45 of a lock device for preventing the battery 4 from being detached from the vehicle body. This lock device also serves as a wheel lock device for inhibiting rotation of the rear wheel WR. That is, the crankshaft 10 of the electric auxiliary unit 1 is
The rotation of an output shaft gear (described later) provided on the first unit 1 can be restricted, and the operation of attaching and detaching the battery 4 can be restricted by a cam (described later) formed on a side portion. The battery case 5 is provided with a hook 50 that abuts on a cam on the side of the push rod 45, and the battery 4 has a recess 47 with which the hook 50 is engaged. Further, as will be described in detail later, the push rod 45 is configured to be held in a locked state by a plunger of a solenoid 42 attached to the seat post 23. The mounting position of the solenoid 45 depends on the battery bracket 4.
9 is good.

A discharge contact (not shown) is provided at the lower end of the battery 4. When the battery 4 is mounted on the battery bracket 49, the discharge contact
0 and connected to a controller (described later) in the electric auxiliary unit 1 through the cable 51.

Next, the structure of the lock device will be described. FIG.
FIG. 3 is a side view of a main part of the lock device. Push rod 45
Is supported by an upper guide member 46 near the upper end, and supported by a lower guide member 48 near the lower end, and is provided to be vertically movable. The upper guide member 46 is connected to the left and right seat stays 24.
The lower guide member 48 can be fixed to the battery bracket 49 or can be fixed to the battery bracket 49.
Can be formed. A flange 45 a is formed on the push rod 45, and a rod lifting spring 52 for urging the push rod 45 upward is provided between the flange 45 a and the upper surface of the lower guide member 48.

On the other hand, a lock lever 61 is provided on the case 70 of the electric auxiliary unit 1 so as to be displaceable in the same direction as the displacement direction of the push rod 45. Lock lever 61
A tooth 61a is formed at the front end (lower end) of the gear 61 to engage with the output shaft gear 102 supported by the crankshaft 101 and restrict the rotation of the gear 102. Lock lever 61
A lock lever lifting spring 62 for urging the lock lever 61 upward is provided between the upper flange 61b and the upper surface of the case 70.

As described above, the drive sprocket 13 and the rear sprocket 14 are rigidly mounted to enable regenerative power generation. In this rigidly mounted state, the output shaft gear 102 connected to the drive sprocket 13 is rigidly mounted. , The rear wheel WR rotates, and when the rear wheel WR rotates, the output shaft gear 102 also rotates. Therefore, by preventing the rotation of output shaft gear 102, the rotation of rear wheel WR can be prevented.

The lower end of the push rod 45 and the upper flange 61b of the lock lever 61 act to separate the push rod 45 and the lock lever 61 from each other. An intermediate spring 63 is provided for transmission to the spring 61.
The spring constant of the intermediate spring 63 is the lock lever lifting spring 62
Is set to be larger than the spring constant.

The battery 4 is located on the side of the push rod 45.
A cam 64 is formed to make the. The cam surface of the cam 64 faces the hook 50 that penetrates through the battery case 5 and engages with the concave portion 47 formed on the wall surface of the battery 4. The cam 64 is set in a cam shape in which the lift amount is larger at an upper portion than at a lower portion so that the hook 50 is pushed toward the battery 4 on the cam surface when the push rod 45 is pushed down. The hook 50 is urged toward the cam 64 by a spring 65 so as to follow the cam 64.

A notch 45 is provided on the side of the push rod 45.
c is engraved. The tip of the plunger 42a pressed by the spring 66 is engaged with the notch 45c, and when the solenoid 42 is not biased, the vertical displacement of the push rod 45 is prevented.
When the solenoid 42 is energized, the plunger 42a is retracted toward the solenoid 42 and its tip and the notch 45c.
Is disengaged, and upward displacement of the push rod 45 is permitted. The battery 42 is connected to the solenoid 42 in response to a power-on instruction supplied from the power switch unit 29.
Supplies current. The power switch unit 29 can be configured to be turned on / off by an infrared signal from the remote controller 34.

In this locking device, when the push rod 45 is pushed down during locking, the spring 52 is compressed. The displacement of the push rod 45 is transmitted to the lock lever 61 via the intermediate spring 63, and the lock lever 61 compresses the spring 62 and descends, and the teeth 61a mesh with the output shaft gear 102.
When the push rod 45 descends, the cam 64 moves the hook 50.
And the hook 50 is engaged with the engagement recess 47 of the battery 4. In this state, the positional relationship is set so that the tip of the plunger 42a is engaged with the notch 45c. Therefore, even if the hand is released from the push rod 45, the push rod 45 cannot be lifted and the battery 4
, And the output shaft gear 102 is locked by the lock lever 61. The force urging the lock lever 61 downward during locking or locking is the difference between the repulsive force of the intermediate spring 63 and the repulsive force of the spring 62.

When the lock is released, if the plunger 42a is retracted by urging the solenoid 42, the push rod 45
Is biased upward by a spring 52, the hook 50 is retracted, and the lock of the battery 4 is released, and the lock lever 61 is biased upward by the spring 62 to release the lock of the output shaft gear 102. Here, since the lock lever 61 is pressed by the push rod 45 via the intermediate spring 62, even if the teeth 61a and the output shaft gear 102 collide with each other at the time of locking, the displacement of the push rod 45 is not changed. The push rod 45 can be lowered to a predetermined position by being absorbed by the intermediate spring 62. Then, when the output shaft gear 102 is slightly rotated, the push lever 61 is lowered, and the teeth 61a and the output shaft gear 102 are sufficiently meshed with each other to be securely locked.

It should be noted that the cam shape should be set so that the hook 50 does not come out of the engagement concave portion 47 of the battery 4 by increasing the peak width 64b of the cam 64 and raising the push rod 45 only a small amount. Thus, locking can be performed in two stages. That is, the push rod 45 is
When it is lowered to the stage, only the battery 4 is locked, and the output shaft gear 102 can be kept unlocked. When the push rod 45 is pushed to the second stage (a position lower than the first stage), the battery 4 and the output shaft gear 10
2 can be locked.

In this case, notches 45c are provided at two different positions in the height direction so that the push rod 45 can be locked at two positions (see FIG. 2). When the push rod 45 is lowered until the plunger of the solenoid 42 engages with the lower notch of the push rod 45 of the two notches 45c, only the battery 4 is locked, and the plunger engages with the upper notch. When the push rod 45 is lowered until the operation is completed, both the battery 4 and the output shaft gear 102 are locked. When unlocking both the battery 4 and the output shaft gear 102, the push rod 45 may be lifted until a portion further below the lower notch is located above the plunger.

The engagement recess 47 with which the hook 50 engages is shown in FIG.
It is preferable to provide it near the bottom of the battery 4 as shown in FIG.
Since the discharge contact is provided on the lower surface of the battery 4 and is connected to the contact unit 60, the closer the contact unit 60 and the engaging portion, that is, the concave portion 47, are, the more easily the contact connection is easily maintained. is there.

FIG. 5 is a sectional view of the electric auxiliary unit 1 in which the lock device is incorporated, and FIG. 6 is a view taken along the line AA of FIG.
The case of the electric auxiliary unit 1 includes a main body 70 and a left cover 70L and a right cover 70R attached to both side surfaces thereof. The connecting portion 9 of the down pipe 22 and the battery bracket 49 is provided around the case body 70.
Hangers 90a, 90 that fit 0, 91, 92 respectively
1a and 92a are formed. The main body 70 has a bearing 71
And a bearing 72 is provided on the right cover 70R. The crankshaft 101 is inscribed in the inner ring of the bearing 71,
A sleeve 73 coaxial with the crankshaft 101 and slidably provided in the outer circumferential direction with respect to the crankshaft 101 is inscribed on the inner ring of the bearing 72. That is, the crankshaft 101 is supported by the bearing 71 and the bearing 72.

A boss 74 is fixed to the sleeve 73. The assist gear 7 is provided on the outer periphery of the boss 74 via a one-way clutch 75 comprising, for example, a ratchet mechanism.
6 are provided. The assist gear 76 is preferably made of resin from the viewpoint of weight reduction, and is preferably a helical gear from the viewpoint of quietness and the like.

A gear 73a is formed at the end of the sleeve 73, and three planetary gears 77 are arranged on the outer periphery of the gear 73a using the gear 73a as a sun gear. Planet gear 77
Are supported by an output shaft gear 102 via a shaft 77 a, and the output shaft gear 102 is supported by a crankshaft 101 via a one-way clutch 78. The planetary gear 77 meshes with an inner gear formed on the inner periphery of the pedaling force detection ring 79. A drive sprocket 13 connected to the rear sprocket 14 by a chain 6 is fixed to an end (the side where no gear is formed) of the sleeve 73.

The pedaling force detecting ring 79 has arms 79a and 79b projecting from the outer periphery thereof.
The crankshaft 101 is provided with a tension spring 80 provided between the arm 79a and the main body 70 and a compression spring 81 provided between the arm 79b and the main body 70.
, Is urged in a direction (clockwise direction in the figure) opposite to the rotation direction during traveling. The compression spring 81 is provided to prevent the ring 79 from rattling. The arm 79b has a potentiometer 82 for detecting the displacement of the ring 79 in the rotation direction.
Is provided.

A clutch plate 86 for regenerative power generation is disposed adjacent to the assist gear 76 via a spring washer 85. Further, the plate 86 is pressed against the clutch gear 86 toward the assist gear 76 against the spring washer. Pressure plate 87 is disposed adjacent to the pressure plate. Both the clutch plate 86 and the pressure plate 87 are provided slidably in the axial direction with respect to the sleeve 73.

The pressure plate 87 is biased toward the clutch plate 86 by a cam 88 in contact with an inclined surface formed on the hub portion. The cam 88 is rotatably supported by a right cover 70R by a shaft 89, and the lever 7 is fixed to an end of the shaft 89, that is, a portion protruding outside from the right cover 70R. The lever 7 is connected to a brake wire 39. When the brake is applied, the lever 7 is rotated by the brake wire 39, and the cam 88 is rotated about a shaft 89.

A pinion 83 fixed to the shaft of the motor M is engaged with the assist gear 76. The motor M is a three-phase brushless motor and has a neodymium (Nd-F
eB) a rotor 111 having a magnet pole 110;
A stator coil 112 provided on the outer periphery thereof; a rubber magnet ring 113 for magnetic pole sensors (in which N and S poles are alternately arranged to form a ring) provided on a side surface of the rotor 111; A Hall IC 115 disposed opposite to the ring 113 and attached to the substrate 114;
And a shaft 116 of the rotor 111. The shaft 116 is supported by a bearing 98 provided on the left cover 70L and a bearing 99 provided on the case body 70.

A controller 100 including a driver FET and a capacitor for controlling the motor M is provided near the front of the vehicle body of the case body 70.
Power is supplied to the stator coil 112 through T. The controller 100 operates the motor M according to the treading force detected by the potentiometer 82 as a treading force detector, and generates auxiliary power.

The output shaft gear 102 has a case body 70
Gear 6 at the end of a lock lever 61 provided through
1 are facing each other. In FIG. 6, the tip of the push rod 45 is directly connected to the lock lever 61 without using the intermediate spring 63.
A modification example in which the head abuts on the flange 61b is shown.

It is preferable that the case body 70 and the covers 70L and 70R are made of a resin molded product from the viewpoint of weight reduction. However, on the other hand, it is necessary to increase the strength around the bearing. Therefore, in this embodiment, metal reinforcing members 105, 106, and 107 are arranged around the bearing. In particular, in the case body 70, the bearings 71, 99 and the hanger 90
Peripheral reinforcing members such as a, 91a, and 92a were connected to each other to form an integral reinforcing plate 105. These reinforcing members 105, 106, and 107 are attached to the case 70 during resin molding.
And the cover 70L, 70R.

In the electric auxiliary unit 1 having the above structure, when a pedaling force is applied to the crankshaft 101 via the crank 11,
The crankshaft 101 rotates. The rotation of the crankshaft 101 is transmitted to the output shaft gear 102 via the one-way clutch 78, and rotates the shaft 77a of the planetary gear 77 around the sun gear 73a.
Is rotated. When the sun gear 73a rotates, the drive sprocket 13 fixed to the sleeve 73 rotates.

When a load is applied to the rear wheel WR, the pedal force detecting ring 79 rotates according to the magnitude of the load, and the amount of rotation is detected by a potentiometer 82. When the output of the potentiometer 82, that is, the output corresponding to the load is larger than a predetermined value, the motor M is energized to generate auxiliary power.
The auxiliary power is combined with the driving torque generated by the human power generated by the crankshaft 101 and transmitted to the driving sprocket 13.

During running, when a brake is applied to decelerate the vehicle, the cam 88 rotates around the shaft 89 by the brake wire 39, and the pressure plate 87 presses the clutch plate 86. Then, the clutch plate 86 is biased toward the assist gear 76 to couple the boss 74 and the assist gear 76, and the rotation of the boss 74 is transmitted to the assist gear 76. Therefore, the rotation of the drive sprocket 13 during braking is transmitted to the pinion 83 through the sleeve 73, the boss 74, and the assist gear 76.
The rotation of the pinion 83 causes the stator coil 11 to rotate.
An electromotive force is generated in 2, and regenerative power generation is performed. The current generated by the power generation is supplied to the battery 4 through the controller 100, and the battery 4 is charged.

In the electric auxiliary unit 1, when the push rod 45 is pushed down, the lock lever 61 is lowered, and the teeth 61 a mesh with the output shaft gear 102. As a result, the rotation of the output shaft gear 102 is restricted, and the rotation of the sleeve 73 and the driving sprocket 13 is also restricted via the planetary gear 77 supported by the output shaft gear 102. When the drive sprocket 13 cannot rotate in this way, in the electric auxiliary unit 1 in which the drive sprocket 13 and the rear sprocket 14 are rigidly mounted, the rear sprocket 14 also cannot rotate, and as a result, the rear wheel WR is locked. As described above, the battery 4 can be locked when the rear wheel WR is locked.

Next, a modification of the lock device will be described. FIG. 7 is a sectional view of a main part according to a modification of the lock device.
The same reference numerals indicate the same or equivalent parts. In this modified example, instead of directly pushing down the push rod 45 by hand to lock or unlocking with a solenoid, the mechanical displacement of the key is transmitted to the push rod by the rotation operation of the key, and the lock is performed.・ Has a structure that can be unlocked. In FIG. 7, the upper part of the push rod 45 is
3, a lower guide member 4 that can be fixed to the upper guide portion 46a and a lower portion to the battery bracket 49.
8a are slidably supported respectively. A lock lever 61 is provided at a lower end of the push rod 45 via a rod lifting spring 104. The rod lifting spring 104 includes the rod lifting spring 52 and the intermediate spring 63.
Doubles as a function.

A long hole 105 long in a direction perpendicular to the push rod 45 is provided at the upper end of the push rod 45, and the long hole 105 is provided at the tip of an arm 106 which is rotated by a key operation. The shaft 107 is engaged. The arm 106 is fixed to a key cylinder 108, and the key cylinder 108 has a key hole 109. The key cylinder 108 is provided with a contact (not shown). The contact is connected to the controller 100 of the electric auxiliary unit 1 and the battery 4, and is used for turning on / off the power of the electric auxiliary unit 1.

The key positions "de", "O"
N ”and“ OFF / LOCK ”are set.
In the position “de-assert”, the push rod 45 is raised to the highest position, and the lock between the rear wheel WR and the battery 4 is released. In this position "escape", the power supply is "off".
In the position “ON”, the push rod 45 is slightly lowered from the uppermost position, but the lock between the rear wheel WR and the battery 4 is still released. This position "ON"
Then the power is "on". In addition, the position "OF
In “F / LOCK”, the push rod 45 is pushed down to the lowest position, and the teeth 61 a of the lock lever 61 are moved to the output shaft gear 1.
02 and the rear wheel WR and the battery 4 are locked. The power supply is “off” even in this position “OFF / LOCK”.

As described above, in the present embodiment, the wheel and the battery 4 can be operated only by pushing down the single push rod 45.
Both can be locked. When unlocking, the solenoid can be operated by remote control, and even when the key and the push rod 45 are linked, the key cylinder is located at a position where the key can be operated from the horizontal direction. There is nothing. Therefore,
Operability at the time of attaching and detaching the battery 4 is improved.

In the present embodiment, the crankshaft 101
, The rotation of the output shaft gear 102 that transmits the pedaling force to the drive sprocket 13 is regulated. However, a member that rotates following the rear wheel WR, for example, the drive sprocket 13 and the sleeve 73, or rotates integrally therewith. The rotation of the member provided may be restricted. Further, the present invention is not limited to the lock device that simultaneously controls the rotation of the rear wheel WR and the battery 4, and may separately control the rotation.

[0055]

As is apparent from the above description, according to the present invention, the vehicle body can be locked by restricting the rotation of the rotating body in the electric auxiliary unit without directly locking the wheels. The locking device can be configured irrespective of the size of the wheels. Therefore, commonality of parts and ease of assembly are increased. Further, the battery can be locked together with the vehicle body without disposing a member serving as an obstacle above the battery, so that the operability of attaching and detaching the battery is improved. Further, each of the claims has the following effects.

According to the first aspect of the present invention, the rotation of the rotating body is restricted by the locking means, so that the rotation of the rear wheel is also restricted. According to the second aspect of the present invention, the removal of the battery is also prohibited. This eliminates the need for a lock device dedicated to the battery, and contributes to the weight reduction of the vehicle body. According to the third aspect of the present invention, the position of the lock lever is limited to face the rotating body, but the push rod has a degree of freedom in arrangement, and can be set in consideration of operability. According to the fourth aspect of the present invention, since the push rod is provided between the seat post and the battery and can be hardly seen from the outside, it is difficult to induce a mischief by another person. According to the fifth aspect of the invention, the upper end portion for manually operating the push rod does not protrude extremely upward from the battery and does not protrude from the battery, so that good operability can be maintained.

According to the sixth aspect of the present invention, the rotation of the rear wheel is restricted by the operation of the push rod, and at the same time, the battery can be locked by engaging the hook means with the battery. According to the seventh aspect of the present invention, only the movement of the push rod at the time of unlocking is performed by the electric means, and the operation of the push rod at the time of locking is manually depressed. Claim 8
According to the ninth aspect, the unlocking is performed by a wireless remote controller. In particular, according to the ninth aspect of the present invention, the unlocking operation can be performed at the same time as the power of the electric auxiliary unit is turned on.

According to the tenth aspect of the present invention, since the battery is fixed to the battery supporting means in the vicinity of the discharge contact, it is possible to prevent the contact from jumping due to vibration. Also,
The lock lever and the electric means are arranged in or near the electric auxiliary unit, and the mass can be concentrated near the electric auxiliary unit as a whole.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an electric assist bicycle to which the present invention is applied.

FIG. 2 is an enlarged view of a configuration of a main part of FIG.

FIG. 3 is a schematic perspective view of a battery and a storage case.

FIG. 4 is a sectional view of a main part showing a configuration of a lock device.

FIG. 5 is a sectional view of a main part of the electric auxiliary unit.

FIG. 6 is a cross-sectional view taken along a line AA in FIG.

FIG. 7 is a sectional view of a main part of a lock device according to a modification.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electric auxiliary unit, 2 ... Body frame, 4 ... Battery, 29 ... Power switch part, 45 ... Push rod, 39 ... Brake wire, 42 ... Solenoid,
47: engagement concave portion, 50: hook, 61: lock block, 70: case body, 100: controller, 102: output shaft gear

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tatsushi Akiba 1-4-1, Chuo, Wako, Saitama Prefecture Inside Honda R & D Co., Ltd. (72) Koji Sakagami 1-4-1, Chuo, Wako, Saitama Inside the Honda R & D Co., Ltd. (72) Inventor Masashi Igarashi 1-4-1 Chuo, Wako-shi, Saitama Prefecture Inside the Honda R & D Co., Ltd. (72) Kunio Yahagi 1-4-1 Chuo, Wako-shi, Saitama Honda R & D Co., Ltd.

Claims (10)

[Claims] 1. A lock device for an electric assist bicycle having an electric assist unit for assisting treading force, wherein a rotating body incorporated in the electric assist unit and rotating following a rear wheel, and engaged with the rotating body. A lock device for an electrically assisted bicycle, comprising: lock means for restricting rotation of the rotating body. 2. A battery supporting means for detachably mounting a battery as a power source of the electric auxiliary unit, wherein the locking means also serves as a battery locking means for inhibiting removal of the battery from the battery supporting means. The locking device for an electrically assisted bicycle according to claim 1, wherein the locking device is used. 3. The device according to claim 2, wherein the lock unit includes a lock lever disposed to face the rotator, and a push rod for urging the lock lever toward the rotator to engage the lock lever. The lock device for an electric assist bicycle according to claim 1 or 2, wherein 4. An electric vehicle, comprising: a seat post standing upright in front of the electric auxiliary unit; and wherein the battery support means is arranged above the electric auxiliary unit to support the battery in a vertical position. The lock device for an electrically assisted bicycle according to claim 3, wherein the push rod is disposed between the seat post and a battery supported by the battery support means. 5. The push rod according to claim 3, wherein the push rod is disposed such that an upper end thereof is located at substantially the same height as an upper surface of the battery supported by the battery support means. Locking device for electric assisted bicycle. 6. A hook device engaged with a battery supported by the battery support device, wherein the hook device engages the battery in response to a biasing operation of the lock lever by the push rod. The locking device for an electric assist bicycle according to claim 3, wherein 7. A lock means for maintaining a push rod, which has pushed down the lock lever to a position where the lock lever is engaged with the rotating body, at that position, and an electric means for releasing the lock at the position by the lock means. The locking device for an electric assist bicycle according to any one of claims 3 to 6, wherein: 8. A switch unit for giving an electric command for instructing release of the lock to the electric unit, wherein the switch unit includes a receiving unit for receiving a lock release command by a wireless signal. 8. The method according to claim 7, wherein
A lock device for an electric assisted bicycle according to claim 1. 9. The power supply switch means for receiving the lock release command and turning on the power of the electric auxiliary unit.
A lock device for an electric assisted bicycle according to claim 1. 10. The battery support means has a contact which is adapted to a discharge contact provided below a battery to be mounted, a hook means of the battery is arranged close to the contact, and the lock lever is provided with the lock lever. The lock device for an electric assist bicycle according to claim 7, wherein the electric motor is provided on an upper portion of the electric assist unit, and the electric means is mounted on the seat post near the upper portion of the electric assist unit.