JP3403874B2 - Battery case mounting structure for electric motorcycle - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present application relates to a battery case mounting structure for an electric motorcycle.

[0002]

2. Description of the Related Art As an example of a battery case mounting structure for an electric bicycle, Japanese Patent Laid-Open No. 5-319104 discloses a battery case having a rear portion of a battery case fitted in a support box provided on a frame of the electric bicycle. It is shown that the motor-side connector and the battery-side connector provided in the support box are connected while being supported by the support box. Further, this support box is shown to be mounted swingably and fixed.

[0003]

By the way, in the case of the type in which the supporting box is rocked in the above-mentioned known example, since the attaching / detaching operation becomes a multi-step motion, the attaching / detaching work is complicated and troublesome, and the mounting structure is also quite complicated. It will be expensive. Further, in the case of the type of fixing the support box, it is not disclosed how to fix the front part of the battery case, but if a general buckle structure is adopted, the attachment / detachment work is similarly complicated. Therefore, it is desired that the attachment / detachment work and the attachment structure can be simplified.

Further, in such a connection type of the battery side connector and the motor side connector, the contact pressure is apt to fluctuate due to vibration during traveling, and if the contact pressure becomes insufficient, the durability of the contact may deteriorate. Therefore, a structure capable of sufficiently increasing the contact pressure is desired. Furthermore, it is also desirable to be able to confirm this immediately when the battery case is insufficiently set. The present invention satisfies these requirements.

[0005]

In order to solve the above-mentioned problems, a battery case mounting structure for an electric two-wheel vehicle according to the present invention comprises a frame of a vehicle body arranged in the front-rear direction between front wheels and rear wheels, and In an electric bicycle equipped with a battery case in which a battery is housed detachably mounted on a frame of a vehicle body, a battery side connector having a terminal electrically connected to the battery is provided at a rear end of the battery case, and A motor side connector having terminals electrically connected to the motor side is attached to the vehicle body side, and the battery side connector is configured to be detachable from the motor side connector by sliding the battery case substantially in the longitudinal direction of the frame of the vehicle body. At the same time, the front end of the battery case is locked and fixed on the frame of the vehicle body that is approximately the length of the battery case from the motor side connector. A lock device for moving the battery case vertically in the space above the frame of the vehicle body and in the space between the lock device and the motor side connector, with the longitudinal direction of the battery case being substantially parallel to the longitudinal direction of the frame of the vehicle body. The battery case is attached and detached by sliding the rear end portion of the battery case in the substantially longitudinal direction of the frame of the vehicle body while doing so.

At this time, a pressing means for pressing the battery case rearward with the battery case attached is provided,
When the battery case is attached, the pressing means is used.
Press the front end of the battery case to
Press and fix to the connector on the data side.

Further, it is arranged in the front-rear direction between the front wheels and the rear wheels.
It can be freely attached to and removed from the frame of this car body and the frame of this car body
Battery case that is attached to the inside and contains the battery inside
In an electric bicycle equipped with, the rear end of the battery case
Battery side with terminals to electrically connect to the battery
Provided with a connector and electrically connected to the motor side on the vehicle body side
Attach the motor side connector equipped with the
Slide the case approximately in the longitudinal direction of the body frame
The battery side connector to the motor side connector.
It is configured to be detachable and the motor side connector to the battery case
Approximately the length of the
A lock device is provided to lock and lock the front end of the vehicle.
Above the frame of the body and on the locking device and the motor side connector
The battery case in the space between the
Up and down with the frame being approximately parallel to the longitudinal direction
While moving the rear end of the battery case the frame of the vehicle body
Remove the battery case by sliding it in the longitudinal direction of
When the lock device is unlocked, the battery
Provide a pop-up mechanism that lifts the front of the case.
You can The pop-up mechanism is swingably supported on the frame side of the vehicle body, and a swing member that changes between a position for pushing up the battery case and a position for pushing the battery case backward depending on the swing position, and the swing member is pushed up. A spring means for urging the oscillating member toward the position side can be provided, and in this case, the spring means generates a spring force sufficient to support the weight of the front portion of the battery case when the oscillating member is in the push-up position, and the swaying member The moving member may be slanted upward and inclined rearward so that the upper end portion is pressed against the step portion formed on the front bottom portion of the battery case .

[0008]

1 to 7 show a first embodiment. FIG. 2 is a side view of the bicycle with auxiliary power according to the present embodiment, in which a front frame 6 having a V-shape in side view is provided between a front wheel 2 and a rear wheel 4. The front frame 6 has a main frame 10 that linearly extends rearward obliquely downward from the head pipe 8, an intermediate portion 12 that curves downward, and a seat frame 14 that extends substantially vertically in the vertical direction.

The head pipe 8 has a front fork 16 for supporting the front wheel 2 at its lower end and a handle 18 at its upper end.
The steering posts 19 to which are attached are rotatably supported. A battery case 20 for accommodating a battery, which will be described later, has a length substantially the same as that of the main frame 10, and is detachably mounted between the front fixing portion 22 and the motor side connector 26 which is a male connector. There is. Reference numeral 24 is a lock device.

An auxiliary power unit 30 is supported on the intermediate portion 12 via a hanger plate 28. A rear fork 32 having a front end attached to the auxiliary power unit 30 extends rearward in a substantially horizontal direction, and a rear end of the rear fork 32 is provided together with a rear end of a pair of left and right rear stays 34 extending obliquely downward from an upper end of the seat frame 14. It is joined to the bracket 36 to form a rear frame 37. The bracket 36 rotatably supports the rear axle 5 of the rear wheel 4 and the driven sprocket 38.

A saddle seat 42 is supported on the upper end of the seat frame 14 via a seat post 40.
The front frame 6 and the periphery of the auxiliary power unit 30 are covered with a vehicle body cover 44. The vehicle body cover 44 is divided into left and right parts , the front end portion of which covers the front side fixing portion 22 and the front portion of the battery case 20, and the sloped wall 45 is a bar in a side view of FIG.
Match the front side of battery case 20 and leave it in the installed state.
Is continuous with the outer shape of the front end of the battery case 20.

[0012] In the battery case 20 lower side, FIG.
2 in side view, after the battery case 20 slope wall 46 is formed obliquely upward rearward in the rear side of the body cover 44
It matches the side of the section. Also covers the seat frame 14 .
An opening is formed in the front portion of the vehicle body cover and is closed by the front panel 48, and the front panel 48 covers the battery case 20.
It is continuous with the rear end . As a result, after the body cover 44
Is the outer shape of the rear end of the battery case 20 in the mounted state
It is continuous with.

The auxiliary power unit 30 includes a control unit 50, a motor 52, and a mission 54. The crankshaft 56, which is the output shaft of the mission 54, rotates together with the drive sprocket 58, and rotates the driven sprocket 38 of the rear wheel 4 via the chain 59.

A pedal 57 is attached to the crankshaft 56, and is manually driven by stepping on it. At this time, the motor 52 is rotated by electric power supplied from the battery in the battery case 20 to form auxiliary power. The control unit 50 controls the rotation of the motor 52 based on the torque from the pedal 57 and the rotation speed of the drive sprocket 58.

FIG. 1 is a side view showing the front frame 6 portion with the vehicle body cover 44 removed, and FIG.
3 is a sectional view taken along line 3, FIG. 4 is a partially cutaway side view of the battery case 20, FIG. 5 is a view showing a front side mounting structure of the battery case 20, and FIG. 6 is a main part of the front side mounting structure of the battery case 20. FIG. 7 is a diagram showing the lower side (Z direction of the arrow in FIG. 1), and FIG. 7 is a diagram showing a rear side attachment structure of the battery case 20.

As is apparent from FIG. 1, the front side fixing portion 22
Is provided at the front end of the main frame 10, and the motor-side connector 26 is provided near the intermediate portion 12. The battery case 20 has a mounting position shown by a solid line A in which the front end is locked by the lock device with the rear end fitted to the motor side connector 26, and an imaginary line B in which the front end is lifted by unlocking the lock device. You can take the pop-up position shown.

The position indicated by the virtual line C is the main frame 1
It is in a state of being detached in a direction substantially perpendicular to the length direction of 0 (direction indicated by X arrow) (or a state before attachment). In addition,
The battery case 20 has a mounting position A and a pop-up position B.
When the time interval changes, the main frame 10 can be slid substantially along the length direction (direction indicated by the arrow Y).

As is apparent from FIG. 3, the battery case 20 is a plastic member made up of an upper case 60 and a lower case 62 that are vertically divided into two parts, and the meeting portions 64 of the two cases are staggered to overlap each other. Part,
This forms a labyrinth structure to prevent water from entering.

A battery pack 66 is accommodated in the battery case 20, and an upper portion of the groove rubber 70 is formed to project downward from the inner surface of the upper case 60 and attached to a rib 68.
Due to the abutting, the lower portion is vibration-isolated and supported by the plate-like cushion rubber 74 interposed between the bottom portion of the battery pack 66 and the bottom portion 72 of the lower case 62.

Reference numeral 76 in FIG. 3 denotes a limit switch, which is attached to the inner surface of the vehicle body cover 44 and has a leaf spring 78 extending downward from the upper portion when the battery case 20 is attached to the vehicle body cover 44. Bottom of the 72
It is turned on by pushing the projection 73 formed to project downward and turned off at the pop-up position described later.

As is apparent from FIG. 4, the upper case 60 and the lower case 62 of the battery case 20 have the engaging claws 80 projecting upward from the lower case 62 on the side front half side.
The two parts are separably integrated by engaging with each other and fastening with the tapping screw 82 on the second half side. A rubber cushion member 84 is provided on the bottom first half of the lower case 62 when it is attached to the main frame 10.

A handle 86 is rotatably attached to the front end portion of the battery case 20, and an inclined step portion 88 is formed on a side surface thereof, which is provided at an intermediate portion of a vehicle body cover 44 which covers the front side fixing portion 22. It matches the slope wall 45 (FIG. 1). A lower portion of the front surface 90 is a notch-shaped pushing pressure step portion 92 that bites rearward.

At the rear end of the battery case 20, a rear slope 94 that obliquely rises rearward is formed on the rear side surface so as to coincide with a slope wall 46 provided at an intermediate portion of the vehicle body cover 44 that covers the lock device. (Fig. 2). Further, the back surface 96 of the upper case 60 is a rear slope 94.
It is formed on the slope that is inclined opposite to.

Further, a battery side connector 100, which is a female connector, is attached to the rear end of the battery case 20 with screws 98 or the like. Battery side connector 1
The rear surface 102 of 00 forms an abutting surface of a motor-side connector, which will be described later, and an engaging projection 104 for positioning, which has a substantially triangular shape in a side view, projects from a central portion thereof. The rear end of the bottom of the battery-side connector 100 forms a guide slope 106 that slopes upward and rearward.

The battery pack 66 is a large number of unit batteries 1
It is a battery pack in which 10 are connected in series, arranged in two stages, and the periphery thereof is packed into one by a heat-shrinkable tube 111. Unit battery 1
Reference numeral 10 is a rechargeable type such as a Ni-Cd type.

Adjacent unit batteries 110 are connected in series by a conductive plate 112, and are connected to a discharge terminal of a battery side connector 100 described later via a fuse 114. Reference numeral 116 in the figure denotes a temperature detecting thermistor, 11
Reference numeral 7 is the lead wire, and 118 is a charging terminal.

The charging terminal 118 has a built-in backflow prevention diode and is attached to the rear side surface of the lower case 62. Further, since the battery case 20 is provided separately from the discharging terminal, the battery case 20 can be charged in either the mounted state or the detached state.

FIG. 5 shows a detailed structure of the front side fixing portion 22 with respect to the battery case 20. The front side fixing portion 22 includes a lock device 24 and a pop-up mechanism. The lock device 24 is attached to a vertical wall 122 of the front bracket 120, which is provided between the front ends of the head pipe 8 and the main frame 10 and is bent into a substantially L-shaped cross section, and extends in the vertical direction.

The lock device 24 has a main switch function for turning the power on and off by a key 124 (FIG. 6), and a lock pin 126 is inserted into and removed from a lock hole 128 formed in the front surface 90 to lock the battery case 20. Or it is a combination switch for unlocking.

When the key position of the lock device 24 is the on position, the lock pin 126 is locked and the key 12 is locked.
No. 4 cannot be removed and the motor 52 is energized from the battery pack 66. At the off position, the energization is stopped and the key 124 can be withdrawn, but the lock pin 126
Remains locked. From this off position the key 124
Push and turn to the locked position to lock pin 1
26 is unlocked so that the battery case 20 can be removed.

A lock plate 132 is attached to the inside of the front surface 90 by a screw 130 to reinforce the front surface 90, and an opening portion 134 that coincides with the lock hole 128 is provided in this. Further, the lower end portion thereof forms a step portion that extends to the pressing pressure step portion 92 and is exposed, and forms an unlocking pressing surface 136 and a locking pressing surface 138 in the front-rear direction.

The pop-up mechanism includes a stay 140 provided on the standing wall 122 below the lock device 24, a swing arm 144 supported by the stay 140 via a slide shaft 142, and the swing arm 144 is rotated counterclockwise. A tension spring 146 (FIG. 1) for urging is provided.

As is apparent from FIG. 6, the stays 140 are provided in pairs so as to project forward with an interval in the vehicle width direction, and each of the elongated holes 14 extends long in the front-rear direction.
8 is formed, and the slide shaft 142 is movable in the front-rear direction. On the other hand, the swing arm 144 has a substantially U shape in a plan view, and the pair of left and right flat portions 150 are overlapped on the outside of each stay 140.

The slide shaft 142 is provided on the left and right stays 140.
The swing arm 144 is connected to the stay 140 so as to be movable in the front-rear direction and swingable around the slide shaft 142 through the elongated hole 148 in the direction crossing between the left and right flat portions 150.

A portion of the swing arm 144 that extends in the vehicle width direction and connects the left and right flat portions 150 forms a pushing portion 152, and pushes to the unlocking pushing surface 136 or the locking pushing surface 138 of the lock plate 132. It is possible now.

The tension springs 146 are a pair of coil springs provided along the lengthwise direction on the left and right side surfaces of the main frame 10, and the attachment protrusions 154 (FIG. 1) formed at the front end of the flat portion 150 to project downward. ), The front side mounting portion 156 is locked to the rear side mounting portion 157, and the rear side mounting portion 157 is locked to the projecting portion 158 protruding to the side surface of the main frame 10. Providing one pair ensures the operation of the pop-up mechanism.

The tension spring 146 always biases the swing arm 144 so as to pull it backward, and
52 is urged to rotate counterclockwise. Therefore, at the pop-up position indicated by the phantom line B, the swing arm 144 is pulled rearward so that the slide shaft 142 moves into the elongated hole 148.
To the rear end portion, and the pushing portion 152 releases the pushing surface 136 when unlocked.
Since the tension spring 146 is pushed upward and lifted upward, most of the tension force of the tension spring 146 acts as the pushing force F1.

Further, the battery case 20 shown by the solid line A
In the attached state, the pushing surface 136 at the time of unlocking pushes the pushing portion 152 downward in the clockwise direction, so that the swing arm 14
4 is substantially parallel to the lengthwise direction of the main frame 10, and the pushing portion 152 is locked by the pushing surface 138 to lock the swing arm 1.
It is pushed forward against 44 and the slide shaft 142 becomes the long hole 1
Move to the front end of 48.

Therefore, the tension spring 146
Is the force with which the pressing portion 152 presses the unlocking pressing surface 136 and the locking pressing surface 138. However, the force F2 that pushes the pushing surface 138 backward when the pushing portion 152 is locked is the pushing surface 1 when unlocking.
It becomes significantly larger than the force F3 that pushes up 36. The pushing force F3 is large enough to pop up the front part of the battery case 20 when the lock device 24 is released.

Further, in the pop-up position, the slide shaft 142 moves to the rear end of the elongated hole 148, and
The unlocking pressing surface 136 with which the pressing portion 152 rotates counterclockwise and abuts is pushed up.

Reference numerals 121 and 159 in FIGS.
They are indicators showing the mounting stay of the vehicle body cover 44 provided on the upper part of the front bracket 120, the ON position of the lock device 24, the remaining battery level, and the like.

As is apparent from FIG. 1, the battery side connector 100 provided at the rear of the battery case 20.
The motor side connector 26 for fitting the
Is provided in the vicinity of the intermediate portion 12 of the
The upper mounting portion 160 is a central portion 49 of the front surface of the lower end portion of the opening / closing portion 48.
And are attached with screws 162 and nuts 164.

It should be noted that the inclination of the center 49 of the front surface of the lower end portion and the inclination of the back surface 96 coincide with each other with a slight gap provided when the battery case 20 is attached. The lower mounting portion 166 of the motor side connector 26 is also mounted on the vehicle body cover 44 by a mounting means such as a screw (not shown).

The rear surface 168 of the motor-side connector 26 is attached to the inner surface of the rear surface 168 when the battery-side connector 100 is mounted.
The contact surface 170 that positions the battery case longitudinal direction is formed by the contact of the two. Positioning engagement protrusion 1
In the position corresponding to 04, the engaging recess 172 with which this is fitted
Is provided with a protrusion 172c, and the guide slope 106
A guide surface 174 having substantially the same inclination is formed at a position corresponding to.

The engagement recess 172 is formed to be larger than the engagement protrusion 104. When the battery case 20 is mounted, the top surface 172a of the engagement recess 172 is brought into contact with the top portion 104a of the engagement protrusion 104 to position the battery case 20 in the vertical direction.

The lower surfaces 172b and 104b of the engaging recess 172 and the engaging projection 104 are inclined to the same extent, but a gap is formed between them.

A pair of pin-shaped motor terminals 176 are provided on the left and right of the contact surface 170, and the tip end portion 178 side projects inward of the battery case 20. Rear end 1
80 goes out from the back surface 168 and is connected to the cord 182. This code 182 is the control unit 50
Connected to.

A pair of side wall portions 184 to which the battery side connector 100 is fitted are formed on the left and right sides of the motor side connector 26. The front edge portion 186 of the side wall portion 184 is adapted to be aligned with the sloped wall 46 of the battery case 20 with a slight gap (FIG. 1).

The upper part 190 of the battery side connector 100
Is inside the upper case 60. The lower portion 192 is screwed from the outside of the rear wall 63 (FIG. 4) of the lower case 62.
It is installed in. The rear part of the lower part 192 has a central part forming a protruding part 193 projecting outward from the central part of the rear wall 63 (FIG. 4), and the rear face 102 and the engaging protrusion 104 are formed therein, and further corresponds to the motor terminal 176. A terminal insertion / removal hole 194 is formed at the position.

The terminal inlet / outlet hole 194 communicates with the recess 195 formed in the lower case 62 side portion of the lower portion 192,
The length of the motor terminal 176 is such that when the battery case 20 is attached, the tip portion 178 passes through the terminal insertion / removal hole 194 and is recessed 19.
5 can be projected into the inside.

A leaf spring-shaped discharge terminal 196 is vertically long in the recess 195, and is screwed to a nut 191 fixed in advance to the upper portion 190 by a U-shaped portion 197 formed at the upper end. , Is electrically connected to the battery pack 66.

The free end 198 of the lower end portion is configured to cover the outlet portion facing the recess 195 of the terminal inlet / outlet hole 194 as shown by the phantom line, and the tip portion 178 of the motor terminal 176 is attached when the battery case 20 is attached. When it protrudes into the recess 195 through the terminal hole 194, it is pushed forward by the tip portion 178 and elastically deformed as shown by the solid line, and the tip portion 178 and the free end 198 come into contact with each other with high contact pressure. There is.

The battery case 20 shown in FIG.
At both the mounting position (solid line A) and the pop-up position (virtual line B), the tip portion 178 has the terminal insertion / removal hole 194.
To be in contact with the free end 198 so that conduction is possible. Therefore, when in the pop-up position, the limit switch 76 is turned off to cut off the energization from the free end 198 to the tip end portion 178, and the limit switch 76 is only in the attached state.
Is turned on and energized.

Further, the connection and separation of the motor side connector 26 and the rear side of the battery case 20 are performed by sliding the battery case 20 in the direction of the arrow Y in FIG. The terminal 176 is put in and out, and at the same time, the engaging projection 104 of the battery side connector 100 is put in and out of the engaging recess 172 of the motor side connector 26. At this time, the stroke amount of the battery case 20 in the Y direction is covered by the stroke of the slide shaft 142.

As is clear from FIG. 7, the recess 19
5 has a pair of left and right motor terminals 176, and correspondingly, a pair of left and right terminals 176 are formed with a partition wall 199 interposed therebetween. A vertical groove is formed in the partition wall 199, and a guide protrusion 179 protruding to separate the left and right motor terminals 176 is inserted therein. Reference numeral 190a denotes the battery case 2 of the motor side connector 26.
It is a positioning protrusion for 0.

Next, the operation of this embodiment will be described. At the mounting position shown by the solid line A in FIG.
The battery side connector 100 provided here is fitted to the motor side connector 26, and the rear end portion of 0 is fixed by direct contact. In addition, since the battery case 20 is pushed rearward by the tension spring 146 via the swing arm 144, the free end 198 and the motor terminal 176 are pressed.
The contact pressure with respect to the tip portion 178 can be increased, contact pressure change such as chattering between both terminals due to vehicle body vibration can be prevented, and the terminal life can be extended.

At this time, since the free end 198 has a leaf spring shape and the tip portion 178 is in contact with the tip portion 178 while elastically deforming the tip portion 178, it is effective to further increase the contact pressure, and the battery case 20 is obliquely raised forward. It is possible to expect an increase in contact pressure due to its own weight even at the point where it is inclined to.

In addition, the engagement protrusion 104 is engaged with the engagement recess 172.
Since the battery case 20 can be positioned in the up-down direction by fitting it to, it is possible to prevent the battery case 20 from falling off. Moreover, since the battery side connector 100 provided at the rear end of the battery case 20 is fitted to the motor side connector 26 and fixed by direct contact, positioning of the motor terminal 176 and the free end 198 becomes reliable, and component accuracy is ensured. It is possible to secure the connection between the terminals by minimizing the play due to the variation.

Next, when the battery case 20 is removed, the lock device 24 is unlocked by the key 124, and the swing arm 144 is caused by the spring force of the tension spring 146 to cause the slide shaft 142 to move the rear end of the elongated hole 148. 1 is slid backward until it reaches the battery part, and is pulled back, and at the same time, it swings counterclockwise, and as shown by phantom line B in FIGS. 1 and 5, it is in a pop-up position for pushing up the front part of the battery case 20. By pulling the handle 86 in a direction substantially perpendicular to the lengthwise direction of the main frame 10 (direction indicated by arrow X in FIG. 1), the main frame 10 can be easily removed as shown by an imaginary line C.

In order to mount the battery case 20, first, in FIG. 1, as shown by a virtual line C, first, the battery case 20 is kept substantially parallel to the upper side of the main frame 10, and then the main frame 10 is attached.
Of the main frame 10 in a direction substantially perpendicular to the longitudinal direction (direction indicated by arrow X in FIG. 1), and further slid rearward in a direction substantially parallel to the longitudinal direction of the main frame 10 (direction indicated by arrow Y in FIG. 1). The battery side connector 100 is fitted to the motor side connector 26.

As a result, the engagement protrusion 104 is fitted into the engagement recess 172, and at the same time, the motor terminal 176 enters the discharge terminal 196 and the tip 178 is connected to the free end 198. These are smoothly and surely performed by the positioning action of the motor side connector 26. Further, at this time, the tip end portion 178 and the free end 198 become conductive, but since the limit switch 76 is still off, the energization is cut off to enhance the durability of the terminal.

At this time, the swing arm 144 is in the position shown by the phantom line, and the unlocking pressing surface 136 of the front portion of the battery case 20 contacts the pressing portion 152 of the swing arm 144, but the pressing portion 152. Since the push-up force of the tension spring 146 acting on the battery supports the weight of the battery case 20, the battery case 20 is in a pop-up position in which the front side is tilted slightly upward as shown by a virtual line B.

When the lock device 24 is not locked like the pop-up position, the battery case 20 is not fully set, and if the vehicle is to be driven as it is, the motor terminal 176 and the free end 198 are set.
Becomes uncertain. However, according to the present embodiment, in such a case, the pop-up position is always brought about, and therefore, the lock can be surely performed by visual confirmation immediately.

Subsequently, when the front end portion of the battery case 20 is pushed down, the pushing surface 136 at the time of unlocking pushes the pushing portion 152 in the clockwise direction, so that the swing arm 144 resists the spring force of the tension spring 146. Slide axis 1
42 moves in the elongated hole 148 and is pushed in until it reaches the front end portion and slides forward to reach the state shown by the solid line.

Therefore, when the lock device 24 locks the front end of the battery case 20 by operating the key 124 at this position, the tension spring 1 that acts on the pressing portion 152.
Of the spring force of 46, the force that pushes the pressing surface 138 at the time of locking backward increases to push the battery case 20 backward. Therefore, the battery-side connector 100 can be more firmly pushed into the motor-side connector 26 and securely fixed.

At this time, the guide slope 106 is the guide surface 1
74 of the engaging protrusion 104 because it is guided by 74.
a is in contact with the top surface 172a of the engaging recess 172 and is positioned in the vertical direction, and the tip portion 17 of the motor terminal 176 is provided.
8 goes deeper into the recess 195, and the discharge terminal 196
The free end 198 side of can be elastically deformed to the front more greatly.

This attachment / detachment operation is a continuous operation closer to a one-step motion than the conventional multi-step motion. Moreover, since the operation can be performed on the upper side of the frame of the vehicle body, the attachment / detachment operation is easy and quick. Moreover, the structure is relatively simple.

FIG. 8 is a side sectional view showing another embodiment of the pop-up mechanism, and FIG. 9 is a view in the direction of the arrow X in FIG.
0 is the same arrow Y direction view. In these figures, the pop-up mechanism of the present embodiment includes a swing plate 200, a hinge shaft 202, a hinge fitting 204, a push rod 206, and a compression coil spring 208.

One end of the hinge fitting 204 is provided with the swing plate 20.
Front end curl portion 21 that enters the notch portion 201 (FIG. 10) of 0
0, it is rotatably wound around the middle portion of the hinge shaft 202, and the swing plate 200 is provided at both ends of the hinge shaft 202.
Both ends of the one side are turned.

The other end 212 of the oscillating plate 202 is also curled and pressed against the lower front end of the battery case as in the previous embodiment. One end 214 of the push rod 206 is locked between a pair of recesses 213 formed in the inner center of the other end 212. The compression coil spring 208 is attached around the push rod 206, and is compressed and attached between the flange 216 and the outer peripheral portion of the hinge fitting 204.

The hinge fittings 204 are the main frame 10
The ticket is wound around a rotary shaft 222 that is rotatably supported between a pair of stays 220 attached to the. A long groove 224 is formed in the circumferential direction of the hinge fitting 204. A through hole 226 (FIG. 8) in the direction orthogonal to the axis is formed in the rotary shaft corresponding to the long groove 224, and the other end 228 of the push rod 206 passing through the through hole passes. The long groove 224 is formed by the rotation of the rotation shaft 222 and the push rod 2
The other end 228 of 06 is allowed to swing.

In this way, the pop-up position B
At this time, the compression coil spring 208 extends the most and the other end 212 side of the swing plate 200 faces diagonally upward and is pushed up. When the other end 212 of the rocking plate 200 is pushed down from this state, the hinge fitting 204 is elastically deformed to push the rocking plate 200 forward, and the compression coil spring 208 is compressed to push the push rod 206 forward. The swing plate 200 swings downward.

Therefore, the oscillating plate 200 is urged to oscillate in the counterclockwise direction by the repulsive elasticity of the compression coil spring 208, and the other end 212 has a pushing force upward and a rear force larger than this. The pressing force toward is generated as a component force. Since the other points are the same as those of the previous embodiment, common parts are denoted by the same reference numerals.

FIG. 11 is a side cross-sectional view showing still another embodiment of the pop-up mechanism. In this example, the swing spring 144 of the first embodiment has a tension spring mounting portion changed. Correspondingly, there is no change in the other aspects from the first embodiment. The difference is that the hook-shaped engaging portion 300 is integrally projected from the middle portion of the flat portion 150, and the locking rod 304 of the tension spring provided with the bent portion 302 that bends at an obtuse angle in the middle portion is hook-shaped at the tip. The part (not visible in this figure) is designed to be locked. By doing so, the assemblability when attaching the locking rod 304 of the tension spring is improved.

The invention of the present application is not limited to the above-described embodiments, but can be modified in various ways. For example, the fitting relationship between the battery side connector 100 and the motor side connector 26 may be reversed. Similarly, the fitting relationship between the engagement protrusion 104 and the engagement recess 172 can be reversed. Further, the mounting position of the battery case 20 is not limited to the main frame 10 and may be another frame portion.

[0076]

According to the battery case mounting structure for an electric motorcycle according to the present invention, the battery side connector can be engaged with and disengaged from the motor side connector by sliding the battery case substantially in the longitudinal direction of the frame of the vehicle body. ,
A lock device for locking and fixing the front end portion of the battery case is provided on the frame of the vehicle body in front of the motor side connector by approximately the length of the battery case, and is provided above the frame of the vehicle body and between the lock device and the motor side connector. In space,
While moving the battery case in the up-down direction with its longitudinal direction substantially parallel to the longitudinal direction of the vehicle body frame, slide the rear end of the battery case in the approximately longitudinal direction of the vehicle body frame to attach and detach the battery case. I chose

Therefore, the attachment / detachment operation is a continuous operation closer to a single-step motion than the conventional multi-step motion.
Moreover, since the operation can be performed on the upper side of the frame of the vehicle body, the attachment / detachment operation is easy and quick. Moreover, the structure is relatively simple.

[0078] Further, since there is provided the pushing pressure section, the front end of the battery case at the vehicle body mounting by the pushing pressure means
Part Press pressure pressing against the rear end to the rear pressure fixed to <br/> order, will be pressed strongly battery side connector to the motor side connector, so that the contact between the connectors of the terminal connected Increased pressure makes it less susceptible to vehicle body vibrations while driving, chattering between both terminals
The contact life can be extended by preventing changes in contact pressure .
Also, minimize play due to variations in component accuracy.
Secure connection between terminals.

Furthermore, if a pop-up mechanism is provided and the front part of the battery case is lifted when the locking device is unlocked, an incompletely set state of the battery case can be immediately visually confirmed and surely reattached.

If the pop-up mechanism is composed of a swingable swing member and spring means for swinging and biasing the swing member toward the pushed-up position, the pop-up operation when the locking device is unlocked only by the pop-up mechanism. When the battery is locked, the battery case can be pushed backward to increase the contact pressure.

At this time, the pop-up operation of the rocking member can be performed by adjusting the spring force of the spring means to a level sufficient to support the weight of the front portion of the battery case, and the rocking member is slanted at the push-up position. By tilting upward and pushing the upper end against the step formed on the front bottom of the battery case, push down the front end of the battery case and swing the swinging member downward to quickly attach the battery case. Can be in a state.

[Brief description of drawings]

FIG. 1 is a side view of a main portion of a front frame portion according to a first embodiment.

FIG. 2 is a side view of the bicycle with auxiliary power according to the first embodiment.

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

FIG. 4 is a partially cutaway side view of the battery case according to the first embodiment.

FIG. 5 is a view showing a front side attachment structure of the battery case according to the first embodiment.

FIG. 6 is a diagram showing a main part of a front mounting structure of the battery case, as viewed in the Z direction shown in FIG.

FIG. 7 is a view showing a rear side mounting structure of the battery case according to the first embodiment.

FIG. 8 is a side sectional view of a main part according to a second embodiment.

9 is a direction view of arrow X in FIG.

FIG. 10 is a direction view of arrow Y in FIG.

FIG. 11 is a side sectional view of an essential part according to a third embodiment.

[Explanation of symbols]

10: Main frame, 20: Battery case, 22:
Front side fixed part, 24: locking device, 26: motor side connector, 100: battery side connector, 104: engagement protrusion,
144: swing arm, 146: tension spring,
172: Engagement recess, 176: Motor terminal, 196: Discharge terminal

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-5-319104 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B62M 23/02 B60K 1/04 H01M 2 / Ten

Claims (4)

(57) [Claims] 1. An electric bicycle including a frame of a vehicle body arranged in the front-rear direction between a front wheel and a rear wheel, and a battery case in which a battery is housed detachably mounted on the frame of the vehicle body. A battery side connector having terminals electrically connected to the battery is provided at the rear end of the case, and a motor side connector having terminals electrically connected to the motor side is attached to the vehicle body side to attach the battery case to the vehicle body. The battery side connector is configured to be disengageable from the motor side connector by sliding it approximately in the longitudinal direction of the frame, and the front end of the battery case is placed on the frame of the vehicle body in front of the motor side connector by approximately the length of the battery case. A locking device for locking and fixing is provided , and this locking device pushes the installed battery case backward.
A pressing means for squeezing is provided, and the battery case is vertically moved above the frame of the vehicle body and in the space between the lock device and the motor side connector with the longitudinal direction of the battery case being substantially parallel to the longitudinal direction of the frame of the vehicle body. The battery case by sliding the rear end of the battery case in the approximate longitudinal direction of the vehicle body frame while moving
However, when the battery case is attached,
Press the front end of the battery case to
A battery case mounting structure for an electric two-wheeled vehicle, characterized in that it is pressed and fixed to the connector on the motor side . 2. The battery case mounting structure for an electric two-wheel vehicle according to claim 1, further comprising a pop-up mechanism for lifting a front portion of the battery case when the lock device is unlocked. 3. A vehicle arranged in the front-rear direction between front wheels and rear wheels.
Detachable onto the body frame and the body frame
It is equipped with a battery case that holds the battery inside.
In this electric bicycle, connect it electrically to the battery at the rear end of the battery case.
A battery side connector with terminals is provided and
Motor-side connector with terminals for electrical connection to the motor side
Attached to the battery case and the battery case is approximately the length of the frame
Battery side connector by sliding in the hand direction
Is configured to be connectable to and detachable from the motor side connector.
The frame of the car body in front of the battery by approximately the length of the battery case.
To lock and secure the front end of the battery case on the
The lock device for the motor is provided above the frame of the vehicle body and to the motor side connector.
The battery case in the space between the
Vertical direction with the body frame being approximately parallel to the longitudinal direction
The rear end of the battery case while moving the
Remove the battery case by sliding it approximately in the longitudinal direction
And the front part of the battery case when the locking device is in the unlocked state.
A pop-up mechanism that lifts up the battery case is provided. The pop-up mechanism is swingably supported to the front side of the frame of the vehicle body, and a swing member that changes the position to push up the battery case and a position to push the battery case backward, and the swing member. battery case mounting structure features and to that electrostatic dynamic two-wheeled vehicle that is provided with a spring means for swinging urging to a position side push member. 4. The spring means has a spring force sufficient to support the weight of the front portion of the battery case when the swing member is in the push-up position, and the swing member tilts obliquely upward and rearward so that the upper end portion is in the battery case. The battery case mounting structure for an electric two-wheel vehicle according to claim 3 , wherein the battery case mounting structure is pressed against a step formed on the front side bottom of the.