JPH10119853A - Battery mounting structure in electrically driven auxiliary bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extremely facilitate mounting/demounting works for batteries in the electrically driven auxiliary bicycle where a front basket is mounted to a head pipe at the front end of a body frame, and both an electrically driven motor assisting footing force by a crank pedal and batteries comprising a cell aggregate for feeding power to the motor housed in a battery case, are also mounted to the body frame. SOLUTION: A battery mounting part 391 capable of fixedly mounting a battery 401 throughout a pull in/out port 48 opened to the inside of a front basket 381 while pulling in/out is being made possible, is provided for the rear part of the front basket, and terminals fulfilling electrical connection with contacts provided by the battery 401 are disposed in the battery mounting part 391 in response to the installation of the battery 401 to the battery mounting part 391 .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a front basket attached to a head pipe at a front end of a body frame.
TECHNICAL FIELD The present invention relates to an electric assist bicycle in which an electric motor that assists the pedaling force of a crank pedal and a battery in which a battery assembly is housed in a battery case to supply electric power to the electric motor are mounted on a vehicle body frame. About.

[0002]

2. Description of the Related Art Conventionally, such an electric assisted bicycle is well known, for example, from Japanese Patent Application Laid-Open No. 7-95744.

[0003]

By the way, in the above-described conventional electric assist bicycle, the battery is stored in a storage box fixedly arranged on the rear side of the seat post below the seat. For this reason, when removing the battery from the storage box for charging or storing the charged battery in the storage box, it is necessary to rotate the sheet so as not to hinder the work. It is hard to say that it is excellent.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a battery mounting structure in a battery-assisted bicycle which makes it possible to attach and detach a battery very easily.

[0005]

According to one aspect of the present invention, there is provided an electric motor in which a front basket is attached to a head pipe at a front end of a vehicle body frame to assist a pedaling force by a crank pedal. In a battery-assisted bicycle in which a battery for supplying power to the electric motor is mounted on a vehicle body frame, a battery can be fixedly inserted at a rear portion of a front basket so that the battery can be inserted into and removed from an insertion opening that opens into the front basket. A battery mounting portion is provided which can be mounted on the battery mounting portion, and a terminal for making an electrical connection with a contact included in the battery is provided in the battery mounting portion in accordance with mounting of the battery on the battery mounting portion.

[0006] According to this configuration, an extra operation such as rotation of the seat post is not required, and an extremely similar operation to the loading and unloading of luggage to the front basket is possible regardless of the handle position. The battery can be easily attached to and detached from the battery mounting section with simple operations.
Electrical connection can be made according to the attachment to the battery attachment portion. Further, even if the battery is dropped by mistake during the operation of inserting and removing the battery from the battery mounting portion, the battery can be held by the front basket, so that the battery is not likely to be damaged. Moreover, since the battery mounting part does not exist in the front basket,
There is no sacrifice in the luggage storage space of the front basket.

According to the second aspect of the present invention, a lock mechanism is provided between the battery and the battery mounting portion for fixedly maintaining the state of attachment of the battery to the battery mounting portion. An operation unit for performing the unlocking operation is provided on one of the left and right sides of the battery mounting unit, so that the lock mechanism is unlocked and unlocked without being obstructed by a brake cable or the like passing through the rear side of the front basket. The operation can be easily performed.

According to the third aspect of the present invention, the lock mechanism includes a first engagement element which is detachably engaged with one of the left and right sides of the battery in accordance with an operation of an operation section, and is housed in the battery. And a second engaging element detachably engaged with either the left or right side of the battery mounting section in conjunction with the first engaging element. By operating the operation section, the left and right sides of the battery are engaged with the left and right sides of the battery mounting section, and the battery can be securely mounted on the battery mounting section.

According to the fourth aspect of the present invention, the second engaging element extends in a rod shape over substantially the entire length between both sides of the battery and is movable in the axial direction to be supported by the battery, thereby supporting the locking mechanism. The configuration can be simplified.

According to the fifth aspect of the present invention, the front basket is attached to the head pipe at the front end of the vehicle body frame, and the electric motor for assisting the pedaling force by the crank pedal and the battery for supplying electric power to the electric motor are formed on the vehicle body. In a battery-assisted bicycle mounted on a frame, a battery mounting portion capable of detachably supporting a battery is fixedly disposed at a rear portion in a front basket, and a cover capable of covering a battery supported by the battery mounting portion from a front side. A member is connected to a lower portion of the battery mounting portion so as to be able to swing back and forth in the front basket, and makes an electrical connection with a contact provided on the battery according to the support of the battery on the battery mounting portion. A terminal is provided on the battery mounting portion.

According to this structure, extra operation such as rotation of the seat post is not required, and it is extremely simple to swing the lid member back and forth regardless of the handle position. With the simple operation, the battery can be easily attached to and detached from the battery mounting portion in the same manner as when loading and unloading the luggage to and from the front basket. it can. In addition, even if the battery is dropped by mistake when the battery is attached to or detached from the battery mounting portion, the battery can be held by the front basket, so that the battery is not likely to be damaged.

Further, according to the invention, a lock mechanism for fixedly maintaining the closed state of the lid member between the battery mounting portion and the upper portion of the lid member on the center line along the front-rear direction of the vehicle body frame. The lock mechanism can be easily locked and unlocked without being hindered by a brake cable or the like passing through the rear side of the front basket.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

1 to 17 show a first embodiment of the present invention. FIG. 1 is a side view of an electric assisted bicycle, and FIG.
3 is an enlarged vertical sectional side view of the motor unit, FIG. 3 is a plan view taken along line 3 of FIG. 1, FIG. 4 is a sectional view taken along line 4-4 of FIG. 3, FIG. 5 is a sectional view taken along line 5-5 of FIG. FIG. 7 is a sectional view taken along the line 6-6 in FIG. 4, FIG. 7 is a view taken in the direction of arrow 7 in FIG. 5, with most of the rear cover and the battery omitted, FIG. 8 is a front view of the battery, and FIG.
10 is a side view of FIG. 9, FIG. 10 is a simplified view of the internal configuration of the battery, FIG. 11 is an enlarged sectional view taken along line 11-11 of FIG.
12 is a cross-sectional view corresponding to FIG. 5 for showing the state of insertion and removal of the battery, FIG. 13 is an enlarged view of a portion indicated by an arrow 13 in FIG. 9, FIG. 14 is a plan view of the charger, and FIG. 15 is a sectional view taken along line 15, FIG. 16 is a sectional view taken along line 16-16 of FIG. 14, and FIG. 17 is a diagram showing a simplified internal configuration of the charger.

First, referring to FIG. 1, this electric assisted bicycle includes a body frame 21 having a substantially U-shape in a side view.
Front fork 23 to the head pipe 22 at the front end of the body frame 21 is steerably supported, the front wheel W _F at the lower end of the front fork 23 is rotatably supported, the bar handle 24 is provided on the upper end of the front fork 23. A motor unit 31 having an electric motor 30 is provided at a lower portion of the body frame 21. The motor unit 31 extends rearward and downward from the body frame 21 above a rear portion of the motor unit 31 and extends substantially horizontally behind the motor unit 31. left issued, the rear wheel W _R is rotatably supported to the right pair of rear forks 25 ... between both rear fork 25 ... and the vehicle body frame 2
A pair of left and right stays 26 are provided between the rear portions of the pair. Further, a seat post 28 having a seat 27 at an upper end is mounted on the rear portion of the body frame 21 so that the vertical position of the seat 27 can be adjusted, and a carrier 29 is fixedly disposed behind the seat 27.

Referring also to FIG. 2, the motor unit 3
The first casing 135 is provided with a pair of hanger portions 21 a and 21 b provided at a lower portion of the body frame 21 with bolts 13.
6,137, and crank pedals 3 at both ends.
A crankshaft 33 having two shafts 2 and 32 is rotatably supported by the casing 135. This crankshaft 33
And the electric motor 30
Drive sprocket 3 that can also apply assist force from
4, the driven sprocket 3 provided on the axle of the rear wheel W _R
5 and an endless chain 36 is wound.

A power transmission system 138 provided between the electric motor 30 and the driving sprocket 34
The power transmission system 138 is accommodated in a drive gear 139 fixed to the rotating shaft 30 a of the electric motor 30.
₁ and a casing 1 having an axis parallel to the rotation shaft 30a.
A first intermediate gear 141 fixed to one end of a first idle shaft 140 rotatably supported by the gear 35 and meshed with the drive 139 _{1; a} second intermediate gear 142 provided integrally with the first idle shaft 140; A third intermediate gear 143 meshed with the second intermediate gear 142, and rotatably supported by the casing 135 having an axis parallel to the first idle shaft 140 and arranged coaxially with the third intermediate gear 143. The second idle shaft 144, the third intermediate gear 143 and the second
One-way clutch 145 provided between idle shafts 144
And a fourth intermediate gear 146 provided integrally with the second idle shaft 144, and a driven gear 147 meshed with the fourth intermediate gear 146, and the driven gear 147 is coupled to the driving sprocket 34.

In such a power transmission system 138, the torque accompanying the operation of the electric motor 30 is reduced and transmitted to the drive sprocket 34. However, when the operation of the electric motor 30 is stopped, the one-way clutch 145 The operation allows the second idle shaft 144 to idle, and the rotation of the drive sprocket 34 due to the pedaling force of the crank pedals 32 is not hindered.

A power transmission system (not shown) is provided between the crankshaft 33 and the drive sprocket 34. The power transmission system includes a torsion bar that is twisted in accordance with the input torque from the input pedals 32, 32. Step on the crank pedals 32, 32
The input torque at the time of the forward rotation of the
And a one-way clutch which allows the crankshaft 33 to rotate in the reverse direction when the crankshaft 33 is rotated in the reverse direction.

The operation of the electric motor 30 is controlled by a controller 37 fixedly supported on the lower side of the body frame 21 in front of the motor unit 31 as shown in FIG. The operation of the electric motor 30 is controlled based on the rotation speed of the electric motor 30 and the input torque from the input pedals 32, 32. Thus, as clearly shown in FIG. 2, in order to detect the number of rotations of the electric motor 30, a reluctor 148 having a protrusion 148 a on the outer periphery is fixed to the rotating shaft 30 a of the electric motor 30, and Detects the protrusion 148a and detects the
8, ie, an electromagnetic pickup type sensor 149 for detecting the rotation speed of the electric motor 30 is attached. The input torque by the input pedals 32, 32 is detected by means (not shown) for detecting the amount of torsion of the torsion bar in the power transmission system between the crankshaft 33 and the drive sprocket 34.

[0021] Incidentally, most of the body frame 21 is covered with a cover 41, the upper portion of the cover 41, the controller from the battery 40 ₁ 37 and the electric motor 30
A main switch 42 for supplying power to the power supply is provided.

Referring also to FIGS. 3 to 7, the front basket 38 is provided on the head pipe 22 so as to be located forward of the brake cables 44 _L and 44 _R extending from the left and right ends of the bar handle 24, respectively. ₁ is mounted. Moreover the rear portion of the front basket 38 ₁ and the battery mounting portion 39 ₁ is provided, the battery 40 ₁ for supplying electric power to the electric motor 30 is attached to the battery mounting portion 39 _1.

A bracket 45 extending forward is attached to the head pipe 22.
A support frame 46 mounted to the front basket 38 ₁ is fixedly supported.

The supporting frame 46 includes a lateral supporting rod 46a extending in the left-right direction of the vehicle body frame 21 and a lateral supporting rod 46a.
a vertically supporting rod portions 46 extending upward from both ends of
b, 46b, a lower vertical support rod portion 46c extending downward from a position spaced downward from the center in the left-right direction of the horizontal support rod portion 46a, and a front extension rod extending forward from the lower end of the lower vertical support rod portion 46c. 46d, a mounting plate 46e having a substantially U-shaped cross-sectional shape opened forward and connecting the horizontal support rod 46a and the lower vertical support rod 46c, and a lower portion of the lower vertical support rod 46c. The mounting plate includes a support plate portion 46f provided between the rear portions of the front extension rod portion 46d, and reinforcing plate portions 46g, 46g provided between both sides of the front end portion of the mounting plate portion 46e and the lateral support rod portion 46a. The rear portion of the portion 46e is fastened to a bracket 45 attached to the head pipe 22.

The horizontal support rod 46a and the pair of upper vertical support rods 46b, 46b are formed by bending a square pipe having a rectangular cross section into an approximately U-shape which is opened upward. The portion 46a is welded to the upper front end of the mounting plate portion 46e. Also, the lower vertical support rod 46c and the front extension rod 4
6d is formed by bending a square pipe having a flat rectangular cross-sectional shape into a substantially L-shape, and the upper part of the lower vertical support rod part 46c is squared between the lower vertical support rod part 46c and the horizontal support rod part 46a. The mounting plate portion 46e is formed so as to form the opening 47 having the shape.
Is welded to the lower front end.

The battery mounting portion 39 ₁ that the opening provided in the rear portion of the front basket 38 ₁ is provided at the rear of the front basket 38 ₁ as insertion slot 48 of the battery 40 ₁ to the battery mounting portion 39 ₁ , and the pair of lower side wall portions 49 and 49 provided continuously to the front basket 38 ₁ from both side edges the lower part of insertion slot 48 so as to extend rearwardly, at right angles to the rear end of their lower sidewall 49 A pair of rear wall portions 50, 50 that are continuously provided and extend in a direction approaching each other, a pair of bottom wall portions 51, 51 that are continuously provided on both lower edges of the insertion / removal opening 48 and extend rearward, and a lower side wall 49, Upper side wall portions 52 fixed to upper vertical support rod portions 46b of the support frame 46, with the inner surfaces substantially corresponding to the outer surfaces of the lower side walls 49, 49 at positions spaced above the upper side portions 49, respectively. And 52, the two bottom walls 51,5
1 and a terminal box 88 fastened to the support plate 46f of the support frame 46 so as to open forward and upward.

The front basket 38 ₁ is attached to the stays 53, 53 attached to both ends of the lateral support rod 46 a of the support frame 46, respectively, by the rear wall 5.
0, 50 are fastened by screw members 54, 54, and a front extension rod 46
By the bottom of the front basket 38 ₁ to the front end of the d is fastened by a screw member 55 and a nut 56 is fixedly supported on the support frame 46.

FIG. 8, with reference also to FIGS. 9 and 10, the battery 40 _1, battery assembly 61 comprising a number of Ni-Cd batteries 60 ... are connected in series is housed in the battery case 62 It is composed. Thus, the battery case 62 includes a front case half 63 and a rear case half 64.
There are those formed by binding to each other, are formed into a flat rectangular box-shaped so as to allow the inserting and removing from the insertion slot 48 in the battery mounting portion 39 _1.

On the upper surface of the battery case 62, a grip 65 connected to the two case halves 63, 64 is provided.
2, a remaining amount indicator 67 having a built-in shank resistor 66 (see FIG. 10) is provided on one side of the grip 65 as shown in FIG. It is provided near. On the upper surface of the remaining amount indicator 67, a push button 68 for causing the remaining amount indicator 67 to perform a display operation is disposed with the operation direction thereof being the vertical direction. On the upper surface of the remaining amount indicator 67, a triangular index 69 whose width decreases as it goes upward in FIG. 3 is drawn, and a plurality of, for example, five light emitting diodes 70, 70. Is done. Turning on and off these light emitting diodes 70, 70.
Is intended to be switched in response to ₁ of the remaining amount change, the full charge all the light emitting diodes 70, 70 ... are turned on in, successively turned off from the light emitting diode 70 of the lowermost 3 as remaining amount decreases As it goes, the light-emitting diode 70 at the top of FIG. 3 eventually blinks.

The battery case 6 in the battery 40 ₁
A concave portion 62 a is provided at the center of the bottom of the battery case 2.
A guide portion 62b protruding rearward at the center in the width direction is provided extending vertically, and a receiving portion 62c protruding rearward is provided at an intermediate portion of the guide portion 62b in the vertical direction.

In FIG. 11, the terminal box 88 has a support frame 46 fitted into the recess 62a of the battery case 62.
A fitting plate 88a fixed on the supporting plate 46f of the battery case 62, a front guide 88b slightly rising from the front end of the fitting plate 88a so as to be able to contact the lower front surface of the battery case 62; It is possible to contact the lower portion of the guide portion 62b on the back surface of the case 62 and rise from the rear end of the fitting plate portion 88a to a position above the front guide portion 88b along the lower vertical rod support portion 46c of the support frame 46. The rear guide portion 88c and the support plate portion 4 are connected to the lower surface of the fitting plate portion 88a at an intermediate portion in the front-rear direction.
And a terminal support 88d extending downward through a hole 71 provided in 6f and fastened to the support plate 46f.

Referring also to FIG. 12, the battery 40 ₁
The battery case 62 has a terminal box 88
Of the front guide portion 88b, and although it Attached to the battery mounting portion 39 ₁ so as to regulate the rear guide portion 88c, the mounting plate portion 46 of the support frame 46
e includes a front guide portion 88b and a rear guide portion 88c.
In the battery case 62 supports the lower end, resiliently urging mechanism 151 to facilitate insertion and removal of the battery 40 ₁ of the insertion slot 48 is provided to bias in the direction in which the upper end is inclined forwardly.

The resilient biasing mechanism 151 has an axis extending substantially horizontally along the left-right direction of the vehicle body frame 21, and has a support shaft 152 provided between both side walls of the mounting plate 46e, and an opening at the tip 153a. from part 47 and arm 153 having a base end portion as possible to protrude forward are swingably supported on a support shaft 152, a battery case 62 of the battery 40 ₁ at the tip portion 153a of the arm 153
The base end portion of the arm 153 and the mounting plate portion 46 to apply a rotational urging force in the direction of pushing the arm forward.
e provided between them.

The arm 153 has a rod shape parallel to the support shaft 152.
It is formed in a substantially U-shape with a tip portion 153a formed in
The tip 153a of the arm 153 is
Battery 40₁Of the back of the battery case 62
It can abut on the guide portion 62b above the receiving portion 62c.
is there. Thus, the battery 40₁Battery case 62
Battery mounting part 39₁When attached to the arm
153 a is a receiving portion of the battery case 62.
62c, which comes into contact with the top portion 153c.
a between the terminal board 88 and the fitting plate 88a of the terminal box 88.
When the lower part of the
Terry mounting part 39₁Battery 40 inside ₁Prevents vibration
And battery 40₁And discharge terminals 89 and 90 described later.
You can maintain a fixed connection.

[0035] of the battery 40 ₁ battery mounting portion 39 ₁
In order to maintain the state of attachment to the
Between 0 ₁ and the battery mounting portion 39 _1, the locking mechanism 155 ₁ is provided.

[0036] The locking mechanism 155 _1, the locking mechanism 155 both upper sidewall portion 52 of the battery mounting unit 39 ₁ as possible to carry out _one of the locking and unlocking operation,
52, for example, a right upper side wall portion 52 facing forward.
Operating portion 156 attached to the outer surface of the
First engaging member 157 for engaging the battery case 62 on the right of the battery 40 ₁ in response to the operation by the 6 key 159
When, a second engaging member 158 detachably engaged with the upper side wall portion 52 on the left side of the battery mounting portion 39 ₁ in conjunction with the first engaging member 157 while being accommodated in the battery 40 in _one of the battery case 62 Is provided.

The operation section 156 has a key hole 160 on its upper surface through which the key 159 can be inserted and removed, and is fixedly attached to the upper right side wall section 52 on the right side. On the other hand, the first engagement element 157 is formed in a rod shape, and has an inner end housed in the operation section 156. The first engagement element 157 has a first section formed by operating a key 159 inserted into the key hole 160. A mechanism for operating the one engagement element 157 in the axial direction is incorporated. That is, an engagement hole 161 is provided on the right side of the battery case 62, and the first engagement element 157 is
A position where the tip is inserted into the engagement hole 161 to be engaged with the right side of the battery case 62,
1 to operate between the position where it is disengaged from the battery case 1 and the engagement with the battery case 62 is released.

The second engaging element 158 is formed in a rod shape extending over substantially the entire length between the right and left side portions of the battery case 62 of the battery 40 _1, intended to be supported in the battery case 62 to allow its axial movement In addition, one end of the second engaging member 158 can coaxially contact the tip of the first engaging member 157. The right side of the battery case 62 has an insertion hole 16 through which the other end of the second engagement element 158 is inserted.
2 is provided, and an engagement hole 163 corresponding to the insertion hole 162 is provided.
There is provided on the left side of the upper side wall portion 52 of the battery mounting portion 39 _1. Further, a flange 158a provided at an intermediate portion of the second engagement element 158, and a second
A coil spring 165 surrounding the second engaging element 158 is provided between the engaging element 158 and a spring receiving portion 164 provided on the battery case 62 near the other end of the engaging element 158.
The second engaging element 158 is urged by a spring force of 5 in a direction in which one end of the second engaging element 158 contacts the tip of the first engaging element 157. In addition, the battery case 62 is provided with a restricting portion 166 that faces the flange 158 on the first engager 157 side of the flange 158 along the axial direction of the second engager 158. By contacting the regulating portion 166, the second
The movement of the engagement element 158 to one side in the axial direction is restricted.

Such a lock mechanism 155₁According to
Battery 40₁To the battery mounting part 39₁Attached to
Operating the operation unit 156 with the key 159 in the state
As a result, the first engagement element 157 fits into the engagement hole 161 and
The first engagement with the right side portion of the
The second engaging element 158 is inserted into the engaging hole 163 in conjunction with the element 157.
Insert the battery mounting part 39₁To the left side of the
And the battery 40₁Battery mounting part 39₁What
Is fixedly maintained. Also with key 159
By operating the operation unit 156, the first engagement element 157
Is pulled into the operation section 156, the first engagement element 157 is engaged.
After being removed from the hole 161, the engagement with the battery case 62 is
The spring 165 is released, and the second engaging element 158
Moves to one side in the axial direction, and separates from the engagement hole 163.
The battery mounting portion 39 ₁Is disengaged from
Will be. At this time, one end of the second engagement element 158 is
The second engaging element 1 does not protrude from the mating hole 161.
The other end of 58 does not protrude from insertion hole 162
And the battery 40₁Is moved forward by the elastic urging mechanism 151.
When the battery 40 is₁Easily taken out
Can be

[0040] Incidentally, the rear and both sides of the battery mounting portion 39 ₁ is intended to be covered by the synthetic resin of the rear cover 168, the rear cover 168, the horizontal support rod portion 46a in the support frame 46 is mounted to 46a while being fastened by the screw member 169 and 169 to the stay 53 is fastened by a screw member 170 and 170 to the rear wall 50, 50 provided in the front basket 38 _1. In this rear cover 168, the portion covering the operation portion 156 of the lock mechanism 155 _1, the operation unit 15
Key 159 to key hole 160 provided on the upper surface of 6
A circular window 171 facing the upper surface of the operation unit 156 is provided to enable insertion and removal from above. In order to look beautiful appearance and difficult to see the terminal box 88 disposed on the lower end of the battery mounting portion 39 ₁ from both sides, the lower sides of the rear cover 168 covers the terminal box 88 from both sides extend downward The extension cover portions 168a, 168a are provided integrally.

Referring also to FIG. 13, the battery 40 ₁
Has first to third connection terminals 75, 76, 77. The first connection terminal 75 is connected to the minus terminal side of the battery assembly 61 via the shank resistor 66, and the second connection terminal 76 is connected to the battery. Connected to the positive terminal side of the assembly 61, the third
The connection terminal 77 is connected to the negative terminal side of the battery assembly 61 via a thermistor 78 for detecting the temperature of the battery assembly 61.

The battery case 6 in the battery 40 ₁
The rear case half 64 has a guide portion 62b projecting rearward at the center in the width direction and extending vertically, and a concave portion 62a provided at the bottom of the battery case 62. And the connection terminals 75, 76, 77 corresponding to the corners where the guide terminals 62b intersect.
Are disposed in the battery case 62.

The first connection terminal 75 includes a flat terminal plate 80 having a front end fixed and resiliently abutting against an inner bottom surface of the battery case 62, and a discharge contact 75a riveted to the lower surface of the terminal plate 80. And a flat charging contact 75b, which is connected to the front end of the terminal plate 80 at a substantially right angle and resiliently abuts on the inner surface of the front part of the battery case 62. The discharge contacts 75a
Is a silver contact, and the charging contact 75b is plated with Ni (or silver).

The first connection terminal 75 is connected to the guide 62b.
Is provided at a position corresponding to one side in the width direction of the battery case 62. A circular opening 81 facing the discharge contact 75a is provided on the bottom wall of the battery case 62, and the charging contact 7 is provided on the guide portion 62b.
A slit 82 for exposing 5b to the rear wall surface is provided vertically long so as to close the upper end and open the lower end.

The second connection terminal 76 has a discharge contact 76a and a charging contact 76b, and is substantially L-shaped like the first connection terminal 75, but formed narrower than the first connection terminal 75. Is done. The second connection terminal 76 is arranged at a position corresponding to the other side in the width direction of the guide portion 62b, and a circular opening (not shown) is provided in the bottom wall of the battery case 62 to face the discharge contact 76a. The guide portion 62b is provided with a slit 83 for allowing the charging contact 76b to face the front wall surface 62b so as to be vertically long so as to close the upper end and open the lower end.

The third connection terminal 77 is connected to the first connection terminal 7.
Although it is formed in a substantially L-shape similarly to the fifth and second connection terminals 76, it has no contact facing the bottom wall surface of the battery case 62, and is provided between the first connection terminal 75 and the second connection terminal 76. The guide portion 62b is disposed in the battery case 62, and the guide portion 62b is provided with a slit 84 facing the third connection terminal 77, which is vertically long so as to close the upper end and open the lower end.

Further, between the slits 82 and 84 and between the slits 83 and 84, there are provided guide grooves 85 and 85 extending vertically upward and downward with the upper end closed and the lower end opened.

Meanwhile, the terminal supporting portion 88d of the terminal box 88, the battery 4 mounted on the battery mounting portion 39 ₁
At 0 _{1, a} first discharge terminal 89 connected to the discharge contact 75 a of the first connection terminal 75 and a second discharge terminal 90 connected to the discharge contact 76 a of the second connection terminal 76 are provided.

The lower end of the fitting plate 88a and the terminal supporting portion 88d of the terminal box 88 is formed with the discharge contact 75a of the first connection terminal 75 facing the opening 81 provided at the bottom of the battery case 62. Is provided with a mounting hole 91 closed. The first discharge terminal 89 is formed in a rod shape, penetrates a lower end closed portion of the mounting hole 91 so as to be movable in the axial direction, and is coaxially disposed in the mounting hole 91. Moreover, the mounting hole 91
A retainer 92 slidably fitted therein is fixed to an intermediate portion of the first discharge terminal 89.
A spring 94 is contracted between the mounting hole 91 and the washer 93 in contact with the lower end closing portion. Thereby, the first discharge terminal 89 has its upper end connected to the discharge contact 75 of the first connection terminal 75.
a, and the first discharge terminal 89
The lower end portion of the retaining ring 95 contacts the lower end closing portion of the mounting hole 91 from below to restrict the upper limit of the first discharge terminal 89.
Is fitted.

The terminal box 88 of such a first discharge terminal 89
According to this arrangement, when the battery 40 ₁ is stored in the battery mounting portion 39 ₁ , the upper end of the first discharge terminal 89 resiliently contacts the discharge contact 75 a of the first connection terminal 75. It becomes Rukoto, the battery 40 ₁ of the vibrations caused during the running, can be effectively hold the contact of the discharge node 75a and the first discharging terminal 89.

[0051] The second discharging terminal 90 is also the are arranged in the terminal box 88 in the same structure as the first discharging terminal 89, when the battery 40 ₁ is attached to the battery mounting portion 39 _1, a second the upper end of the second discharging terminal 90 to discharge node 76a of the connection terminals 76 are resiliently abutted against the battery 40 ₁ of the vibrations caused during the running, the contact is effective discharge contacts 76a and the second discharging terminal 90 Is held.

The first and second discharge terminals 89, 90
Is a code 9 for supplying electric power to the electric motor 30.
6 and 97, respectively, and the cords 96 and 97 are pulled out from the terminal box 88.

[0053] In FIGS. 14 to 16, the charger 100 for charging the battery 40 ₁ taken out from the battery mounting portion 39 ₁ is a battery 40 ₁ can be mounted in the vertical direction as detachable direction.

The body 101 of the charger 100 is placed on a flat floor surface 99, and a lower portion 102 whose height from the floor surface 99 is relatively low, and a lower portion 102 from the floor surface 99. the height and made of high unit 103 and the a synthesized resin provided so as to be connected to the lower portion 102 to be higher than lower portion 102, of substantially rectangular and narrower than a width of the battery 40 ₁ of It is formed in a box shape.

The upper part 103 is vertically moved on the lower part 102 side.
Side 104 extending vertically and facing up and down
Extending side 105 and below those sides 104,105
With the horizontal bottom surface 106 connecting the ends, above and on both sides
A mounting groove 107 having an opening is formed.
07 has a battery 40 from above.₁Can be installed
You. In addition, the battery 40 is₁With
The battery 40 ₁Table located on the top of the
The push button 68 of the indicator 67 is at least
The dimensions of the bottom surface 106 are set so that
You.

The both side surfaces 104 and 105 of the mounting groove 107
Is the battery 40 in the mounting groove 107.₁Easy to install
Sloping away from each other as you go upward
It is formed in a tapered shape. Also, the mounting groove 107
Battery 40 in mounted state ₁Side 1 facing the back of
04, the battery 40₁Guide on the back of the
62b on both sides of the battery 40₁One that can touch the back of the
A pair of ribs 108, 108 are protruded from the
You. Further, the battery 4 in the mounting state in the mounting groove 107
0₁The battery 40 is provided on a side surface 105 facing the front surface of the battery 40.
₁A plurality of, for example, three ribs 109 which can contact the front surface of
Are protruded between the upper and lower ends of the side surface 105. this
.., 109...
As with 05, the tape is inclined outwards as it goes upward.
Although it is formed in a tape-like shape, both side surfaces 104, 105
The inclination angle is set smaller than the inclination angle. Accordingly
And both side surfaces 104 and 105 and each rib 108.
9 are inclined, so that the battery 40₁Wearing
The mounting and withdrawal of the groove 107 becomes easy,
The inclination angle is set smaller than the inclination angles of the side surfaces 104 and 105
After the battery 40 with the ribs 108.
Both sides are effectively supported, and the battery 40₁of
Front and rear play in the mounting groove 107 is prevented.
You.

Further, on the side surface 104, the battery 40
_1, a guide recess 110 is provided to open and remove a guide portion 62b projecting from the battery case 62 from above.
Upper side surfaces 110a, 110a of the guide recess 11
In order to facilitate the insertion of the guide portion 62b into the upper portion 0, the guide portion 62b is tapered so as to be inclined away from each other as it goes upward.

[0058] the guide recess 110, fitting projections 1 to be fitted to the back of the guide grooves 85, 85 of the battery 40 ₁
11 and 111 are protruded, and these fitting projections 11
By fitting to 1,111 of the guide grooves 85, 85, rattling in the width direction within the mounting groove 107 of the battery 40 ₁ is prevented.

In FIG. 17, a charger 100 includes a power supply circuit 1 connected to an AC power supply through a connector 114.
15. a control circuit 116 comprising a microcomputer;
A drive circuit 117, a MOS-FET 118, a transistor 119, a diode 120, and the like are provided.

The first charging terminal 1 is connected to one end of the power supply circuit 115.
21 is connected to the other end of the power supply circuit 115.
FET 118, transistor 119 and diode 1
The second charging terminal 122 is connected via the terminal 20. The control circuit 116 has a transistor 125 connected to the gate of the MOS-FET 118, and the base of the transistor 125 is connected to the thermistor terminal 123. A control signal for current switching is input from the control circuit 116 to the power supply circuit 115, and the power supply circuit 115
2 is input to the control circuit 116. Further, the output terminal of the drive circuit 117 is connected to the base of the transistor 119 for controlling the conduction and cutoff of the transistor 119. The input terminal of the drive circuit 117 is connected to the battery detection terminal 124.

Incidentally, the high-order part 10 of the body 101
3 and the lower part 102 side than the mounting groove 107 and
The lower part 102 has a battery mounted in the mounting groove 107.
40 ₁The substrate 113 is located on the side of the lower part of
It is accommodated and arranged on this substrate 113 as shown in FIG.
Each of the electrical components is mounted. Thus, the substrate 113 is mounted.
Battery 40 mounted in groove 107₁On the side of the bottom of
By being disposed on the body 101 so as to be placed,
Battery 40 to charger 100₁As low as possible
To the charger 100,
Battery 40₁Can be stabilized.

[0062] The bottom of the guide recess 110 provided in the side surface 104 of the mounting groove 107, projections 126, 127 and 128 which respectively fitted in the slits 82, 83, 84 of the back of the battery 40 ₁ is projected Is done. First charging terminal 121 and the battery detecting terminal 124 Thus are those each composed of a wire, elastically charging terminal 75b of the first connecting terminal 75 when the mounting groove 107 the battery 40 ₁ is attached The two terminals 121,
An opening 129 in which a bent portion 124 is provided in the projection 126
It is made to protrude from. The second charging terminal 122 formed of a wire, as elastically sliding contact with the charging terminal 76b of the second connecting terminal 76 when the battery 40 ₁ is mounted in the mounting groove 107, is caused to protrude from the protrusion 127 And the thermistor terminal 123 made of a wire is attached to the mounting groove 10.
The third connection terminal 7 when the battery 40 ₁ is attached to the 7
7 is projected from the projection 128 so as to resiliently slide.

Next, the operation of the first embodiment will be described.
Then, the front basket 38₁In the back, the freon
Basket 38₁From the insertion / removal opening 48 that opens toward the inside
Battery 40₁Can be fixedly mounted
Battery mounting part 39₁Is provided,
No extra operation such as rotating the post 28 is required
With the position of the bar handle 24
Even if there is, front basket 38₁With luggage
With the same extremely simple operation, the battery 40₁Battery
Attachment part 39₁It can be easily attached to and detached from. Ma
Battery 40 ₁Battery mounting part 39₁Insertion and removal operations
Battery 40 accidentally during operation₁If you drop the battery
40₁The front basket 38₁Take and hold with
Battery 40₁May be damaged
No battery mounting part 39₁But the front basket
38₁Because it does not exist in the front basketball
Set 38₁Without sacrificing storage space
No.

[0064] Moreover, depending on the mounting of the battery 40 ₁ of the battery mounting portion 39 _1, the contact 7 provided in the battery ₁
Discharge terminals 89, 90 for making electrical connection with 5a, 76a
There therefore is disposed in the battery mounting portion 39 ₁ can be achieved easily electrically connected in accordance with the mounting of the battery 40 ₁ of the battery mounting portion 39 _1.

[0065] Battery 40 ₁ and the battery mounting portion 3
9 ₁ between the locking mechanism 155 ₁ is provided in the operation unit 156 for performing locking and unlocking operation of the lock mechanism 155 ₁ is provided on any one side e.g. right left and right battery mounting portion 39 ₁ I have. Therefore, the brake cables 44 _L passing through the rear side of the front basket 38 ₁ ,
Without being obstructed by the 44 _R or the like, it is possible to easily perform the locking and unlocking operation of the lock mechanism 155 _1.
In addition, the lock mechanism 155 ₁ includes a first engagement member 157 that removably engages with _one of the left and right sides, for example, the right side of the battery 401 in response to an operation of the operation unit 156, and a first engagement member 1
In conjunction with the 57 second engaging member 15 to detachably engage to the left or right other side eg left battery mounting portion 39 ₁
By those and a 8, the left and right side portions of the battery 40 ₁ is engaged with the right and left side portions of the battery mounting portion 39 _1, a battery 40 ₁ can be attached securely to the battery mounting portion 39 _1. Further, the second engagement element 158
The battery 40 by being intended to be supported on the battery 40 ₁ and enables the axial movement extends in a rod shape along substantially the entire length between the _first sides, it can be simplified the structure of the locking mechanism 155 ₁ It is.

[0066] battery case 6 in the battery 40 ₁
A fuel gauge 67 is provided on the upper surface of the vehicle 2 and the fuel gauge 67 can be visually recognized from above, so that the fuel gauge 67 can be easily displayed even when the cyclist is sitting on the seat 27. can be visually recognized, it confirms the remaining amount of the battery 40 ₁ is easy. Further, only when the push button 68 is pressed, the remaining amount is displayed on the remaining amount indicator 67, so that the remaining amount indicator 67 does not consume wasteful power and does not become an obstacle during operation.

[0067] Battery 40 first and second connecting terminals 75, 76 are provided in _1, which is also used during charging even during discharge, the one provided with connection terminals of the dedicated time during discharge only and charge In comparison, the number of components can be reduced and the wiring structure in the battery case 62 can be simplified.

[0068] Incidentally, while the discharge or current flowing through the power feeding to the electric motor 30 from the battery 40 ₁ is relatively large, the current flowing during charging of the battery 40 ₁ is relatively small. For this reason, when the first and second connection terminals 75 and 76 are electrically connected at the same point during discharging and charging, both connection terminals 75 and 76 are connected.
76 is set to a large electric capacity, and the charger 1
It is necessary to set the charging terminal on the 00 side also to one having a large electric capacity. However, the first and second discharge terminals 8
Discharge contacts 75a and 76a to which the first and second discharge contacts 9 and 90 are connected;
And the charging contacts 75b, 76b to which the second charging terminals 121, 122 are connected are the first and second connection terminals 75,
Since the first and second connection terminals 75 and 76 are shared at the time of discharging and charging, the electrical characteristics required at the time of discharging and charging can be satisfied. That is, at the time of discharge in which a large current flows, the discharge contacts 75a and 76a formed of silver contacts and the first and second discharge terminals 89 and 90 are resiliently contacted with the pressing direction being the coaxial direction. The first and second wires, which are made of a wire, can respond to the flow of a large current.
Charging contacts 75b upon insertion of the charging terminals 121, 122 battery 40 _1, to wipe the 76b charging contacts 75
Dust and the like on the surfaces of b and 76b are wiped off, and a structure that does not cause a contact failure can cope with the flow of a small current.

[0069] The first and second discharge node 75a of the connection terminals 75 and 76, while 76a is arranged to face the bottom of the battery case 62 of the battery 40 _1, charging contacts 75b, 76 b, the bottom Since it is arranged facing the back surface orthogonal to the above, it is possible to prevent erroneous connection from occurring during discharging and charging.

[0070] Furthermore the battery 40 ₁ is intended to be mounted in the charger 100 in the vertical direction as detachable direction, charging operation by attachment to the charger 100, as the unnecessary operation of connecting the charging the charging is performed Can be facilitated.

[0071] Further on the side surface 104 is different from the wall surface and the bottom surface 106 of the wall i.e. mounting groove 107 own weight of the battery 40 ₁ acts upon attachment to the battery charger 100, the terminals 1
21-124 is disposed, charging contacts 75b facing the rear side of the battery 40 _1, since the respective terminals 121 to 124 76b and the third connecting terminal 77 is connected, the the weight of the relatively heavy battery 40 terminals Each terminal 121-124 of the charger 100 is prevented from affecting the terminals 121-124.
Can be configured as a lightweight and compact one.

[0072] The remaining amount display meter 67 provided on the upper surface of the battery 40 _1, can be viewed from above when mounting the battery 40 to the charger 100. In addition, since the push button 68 for operating the display of the remaining amount indicator 67 is operated in the vertical direction, a force in the contact release direction is exerted on the terminals 121 to 122 by the pressing force on the push button 68. There is no.

FIG. 18 and FIG. 19 show a second embodiment of the present invention. FIG.
9 is a sectional view taken along the line 18-18, and FIG.
It is sectional drawing which follows the -19 line.

[0074] The head pipe 22 front basket 38 ₂ is fixedly supported through a support member 181, the battery in the battery mounting portion 39 ₂ which is fixedly disposed to the rear of the front basket 38 in ₂ it is possible to fixedly support the 40 _2, the battery mounting portion 3
9 ₂ Battery 40 ₂ supported on is covered by the cover member 182.

Battery mounting part 39_TwoIs the guide section 62
battery 40 provided with b ' _TwoFacing the back of
And the battery 40 provided with the recess 62a '._Two
And a portion opposed to the bottom of the
It is formed by a metal plate as
Basket 38_TwoTogether with the rear of the
183, 183 ... and nuts 184, 184 ...
It is further fastened to the supporting member 181 together.

[0076] the bottom of the battery mounting portion 39 _2, terminal box 88 is attached as possible to fit into the recess 62a 'which are provided at the bottom of the battery 40 _2. Also in the lower portion front end sides of the battery mounting portion 39 _2, connecting portions 185,185 extending downward are continuously provided, a rectangular connecting hole in their connecting portions 185,185 186, 186
Is provided. The provided supporting portion 187 extending obliquely upward in the lower front end of the battery mounting portion 39 ₂ between the two joining portions 185,185 is continuously provided by the support portion 187, the front lower end of the battery 40 ₂ is supported .

[0077] The lid member 132 has a portion opposed to the front surface of the battery 40 _2, and a portion opposed to the upper surface of the battery 40 _2, and a portion facing to both sides of the battery 40 _2, are those formed from a synthetic resin so as to form a vertical section substantially L-shaped box-shaped, in its lower end on both sides, inserted into the connecting hole 186, 186 of the connecting portion 185,185 of the battery mounting portion 39 _2, engaging Locking connection 18 to be combined
8,188 are connected in series. Or lid member 132 can be pivoted back and forth in front basket 38 within ₂ engaging portion to the connecting portion 185,185 of the locking connection portion 188, 188 as a fulcrum.

[0078] At the bottom of the battery 40 _2, the first in the same manner as the battery 40 ₁ of the embodiment, a discharge terminal 75a to be connected to the charging terminal 89 and 90 disposed on the terminal box 88,
76a and is disposed, the battery 40 _second battery mount portion 39 charging terminal when mounting onto ₂ 89, 90 and discharge terminal 75a, 76a are connected to each other.

The inside of the cover member 182 has a battery 40 ₂
The battery the battery 40 ₂ of the rear guide portion 62b 'to elastically contact with the front and the elastic member 189 for pressing the battery mounting portion 39 _2, contacts the elastically on the upper surface of the battery 40 ₂ 40 ₂ with the battery mounting portion 39 ₂
And the elastic member 190 pressed against the elastic member 190 is adhered. Also on the front surface of the battery 40 ₂ is the engagement recess 191 is provided,
An engagement projection 192 that can engage with the locking recess 191 is integrally provided on the inner surface of the lid member 182. Thus, retained when closing the lid member 182, it is prevented rattling of the battery 40 ₂ between the cover member 182 and the battery mounting portion 39 _2, a stable connection between the battery 40 ₂ and the discharge terminal 89 and 90 can do.

[0080] At the upper end of the battery mounting portion 39 _2, and connecting plate portion 193 extending obliquely rearward side is continuously provided, at the upper end of the lid member 182, connecting plate facing from above the connecting plate portion 193 194 are continuously provided. Thus was between the two joining plate portions 193 and 194 on the center line along the longitudinal direction of the vehicle body frame 21 (see FIG. 1), the locking mechanism 155 ₂ are provided to maintain the closed state of the lid member 182 fixedly.

The lock mechanism 155 ₂ has a key hole 195
The to face the upper surface coupling plate portion and an operation portion 196 which is fixed to 194, connecting plate 193 of the battery mounting portion 39 ₂ to allowed to insert the operating unit 196 removably lid member 182
And an engaging claw 198 provided on the operation portion 196 so as to be able to engage the lower surface of the connecting plate portion 193 at the periphery of the locking portion 197. When the cover 182 is closed, the key hole 195 is closed.
By operating the key (not shown) inserted in the
The closed state of the lid member 182 is fixedly maintained by engaging the engaging claws 198 with the connecting plate portion 193.

According to the second embodiment, the battery 40_Two
Battery mounting portion 39 capable of detachably supporting_TwoIs flow
Basket 38_TwoFixedly located at the rear of the
Battery mounting part 39_TwoBattery 40 supported by_TwoBefore
The cover member 182 that can be covered from one side
38_TwoBattery to be able to swing back and forth in the
Remounting part 39_TwoConnected to the lower part of the
As in the first embodiment, the cover member 182 is swung back and forth.
With the extremely simple operation of just
_TwoBattery 40 in the same manner as loading and unloading_TwoThe Batte
Remounting part 39 _TwoCan be easily attached to and detached from
Battery 40_TwoBattery 40_TwoTo
Battery 40_TwoThe front basket 3
8_TwoBattery 40_TwoBreaks
There is no risk of loss. Also, the battery mounting portion 39_TwoTo
Battery 40_TwoBattery 40, depending on the support of_TwoAnd discharge
Connection with the contacts 89 and 90 can be easily achieved.
You.

[0083] Furthermore brake through locking mechanism 155 ₂ to maintain a closed state of the lid member 182 fixedly found by being disposed on the center line along the longitudinal direction of the vehicle body frame 21, a front basket 38 ₂ backward side Cable 44
Lock mechanism 155 without being disturbed by _L , 44 _R, etc.
_2. Locking and unlocking operations can be easily performed.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

[0085]

As described above, according to the first aspect of the present invention, an extra operation such as rotation of the seat post is not required, and the front basket can be provided regardless of the handle position. The battery can be easily attached to / detached from the battery mounting portion by an extremely simple operation similar to the insertion / removal of a load to / from the battery, and electrical connection can be achieved in accordance with the mounting to the battery mounting portion. Moreover, there is no danger of the battery being damaged even if the battery is accidentally dropped during the insertion / removal operation of the battery into / from the battery mounting portion. Also, since the battery mounting portion is not located in the front basket, the luggage storage space of the front basket is provided. Without sacrificing.

According to the second aspect of the present invention, the operating portion for locking and unlocking the lock mechanism is provided on one of the right and left sides of the battery mounting portion, so that the rear side of the front basket is provided. The lock mechanism can be easily locked and unlocked without being obstructed by a brake cable or the like passing therethrough.

According to the third aspect of the present invention, the operation of the operation unit located on one of the right and left sides of the battery mounting unit allows
The left and right sides of the battery are engaged with the left and right sides of the battery mounting portion, so that the battery can be securely mounted on the battery mounting portion.

According to the fourth aspect of the present invention, the second engaging member is formed in a rod shape and is supported by the battery.
The configuration of the lock mechanism can be simplified.

According to the fifth aspect of the present invention, an extra operation such as rotating the seat post is not required, and
Regardless of the position of the handlebar, the battery can be easily attached to and detached from the battery mounting section in the same way as inserting and removing luggage from the front basket, by simply swinging the lid member back and forth. And an electrical connection can be made in accordance with the attachment of the battery to the battery attachment portion. Moreover, there is no possibility that the battery will be damaged even if the battery is dropped by mistake when the battery is attached to or detached from the battery mounting portion.

According to the sixth aspect of the present invention, a lock mechanism for fixedly maintaining the closed state of the lid member is provided on the center line along the front-rear direction of the vehicle body frame so as to enable locking and unlocking. Thus, the locking and unlocking operations of the lock mechanism can be easily performed without being obstructed by a brake cable or the like passing through the rear side of the front basket.

[Brief description of the drawings]

FIG. 1 is a side view of an electric assist bicycle according to a first embodiment.

FIG. 2 is an enlarged vertical sectional side view of a motor unit.

FIG. 3 is a plan view as viewed in the direction of arrow 3 in FIG. 1;

FIG. 4 is a sectional view taken along line 4-4 of FIG. 3;

FIG. 5 is a sectional view taken along line 5-5 of FIG. 3;

FIG. 6 is a sectional view taken along line 6-6 of FIG. 4;

FIG. 7 is a view taken in the direction of arrow 7 in FIG. 5 in a state where most of a rear cover and a battery are omitted.

FIG. 8 is a front view of the battery.

FIG. 9 is a side view as viewed in the direction of arrow 9 in FIG. 8;

FIG. 10 is a diagram showing a simplified internal configuration of a battery.

FIG. 11 is an enlarged sectional view taken along line 11-11 of FIG. 4;

FIG. 12 is a cross-sectional view corresponding to FIG. 5, showing a state of insertion and removal of the battery.

FIG. 13 is an enlarged view of a portion indicated by an arrow 13 in FIG. 9;

FIG. 14 is a plan view of the charger.

FIG. 15 is a sectional view taken along line 15-15 of FIG. 14;

FIG. 16 is a sectional view taken along line 16-16 of FIG. 14;

FIG. 17 is a diagram showing a simplified internal configuration of the charger.

FIG. 18 is a longitudinal sectional view of a main part of the second embodiment, and is a sectional view taken along line 18-18 in FIG. 19;

FIG. 19 is a sectional view taken along the line 19-19 in FIG. 18;

[Explanation of symbols]

21 ... body frame 22 ... head pipe 30 ... electric motor 32 ... crank pedal 38 ₁ , 38 ₂ ... front basket 39 ₁ , 39 ₂ ... battery mounting part 40 ₁ , 40 ₂ ··· Battery 48 ···· Removal opening 75a, 76a ··· Contact 89, 90 ··· Terminal 155 ₁ , 155 ₂ ··· Lock mechanism 156 ··· Operation unit 157 ··· First engaging element 158 · ..Second engaging element 182 ··· Lid member

Claims (6)

[Claims] An electric motor (30) having a front basket (38 ₁ ) attached to a head pipe (22) at the front end of a body frame (21) to assist a pedaling force by a crank pedal (32); 30) and a battery (40 ₁ ) for supplying power to the vehicle body frame (2).
In the electric assisted bicycle mounted on 1), the battery (40 ₁ ) can be inserted into and removed from the insertion opening (48) which opens into the front basket (38 ₁ ) at the rear of the front basket (38 ₁ ). ) battery mounting unit which can mounted fixedly (39 ₁₎ is provided, said battery mounting unit (depending on the mounting of the battery (40 ₁₎ to 39 _1), a battery (40 ₁₎ contacts provided in (75a, 7
A battery mounting structure for a battery-assisted bicycle, characterized in that terminals (89, 90) for electrical connection with 6a) are provided in the battery mounting portion (39 ₁ ). To 2. A battery (40 ₁₎ and a battery mounting portion (39 ₁₎ between the locking mechanism the battery mounting portion mounting state of the (39 ₁₎ Battery to (40 ₁₎ maintaining fixedly (155 ₁₎ Is provided, and the lock mechanism (15) is provided.
Operation unit for performing locking and unlocking operations of ₅₎ (1
The battery mounting structure for the battery-assisted bicycle according to claim 2, characterized in that (56) is provided on one of the right and left sides of the battery mounting portion (39 ₁ ). 3. A first engagement element (157) in which the lock mechanism (155 ₁ ) is detachably engaged with one of right and left sides of a battery (40 ₁ ) in response to an operation of an operation section (156).
And a battery mounting portion (39 ₁ ) housed in the battery (40 ₁ ) and interlocking with the first engagement element (157).
The battery mounting structure for the battery-assisted bicycle according to claim 2, further comprising: a second engagement element (158) that removably engages with either the left or right side of the bicycle. The second engaging element (158) is connected to the battery (4).
Battery mounting structure of the electric assist bicycle according to claim 3, characterized in that it is supported on the battery (40 ₁₎ and enables the axial movement extends in a rod shape along substantially the entire length between opposite sides of the 0 _1). 5. An electric motor (30) having a front basket (38 ₂ ) attached to a head pipe (22) at the front end of a body frame (21) to assist a pedaling force by a crank pedal (32). battery supplies power 30) (40 ₂₎ and the vehicle body frame (2
In the battery-assisted bicycle mounted on 1), a battery mounting portion (39 ₂ ) to which the battery (40 ₂ ) can be detachably mounted is fixedly disposed at the rear of the front basket (38 ₂ ). A cover member (182) that can cover the battery (40 ₂ ) supported by (39 ₂ ) from the front side can swing in the front-rear direction in the front basket (38 ₂ ) to enable the battery mounting portion (3).
9 ₂ ), and connected to the lower part of the battery mounting part (3).
According to the attachment of the battery (40 ₂ ) to the battery 9 ( _{2 2} ), the terminals (89, 90) for making electrical connection with the contacts (75a, 76a) of the battery (40 ₂ ) are attached to the battery attachment section (39 ₂ ). A battery mounting structure for a battery-assisted bicycle, the battery being mounted on a bicycle. 6. A closed state of the cover member (182) is fixedly maintained between the battery mounting portion (39 ₂ ) and the upper portion of the cover member (182) on a center line along the front-rear direction of the body frame (21). The battery mounting structure for the battery-assisted bicycle according to claim 5, wherein the locking mechanism (155 ₂ ) is provided so as to be capable of locking and unlocking.