JP2002193165A - Battery case mounting structure for motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To positively set a battery case and to improve appearance. SOLUTION: A main frame 1 is provided with a locking device 24 and a pop-up mechanism, and a lower end part is provided with a motor side connector 26. The battery case 20 is attached/detached sliding in the almost longitudinal direction of the main frame 10 holding a handle 86 provided rotatably to the front end part. When mounting, a battery side connector 100 is connected to a motor side connector 26 on the body side and fixed by the locking device 24. The locking device 24 has a rock pin 126 freely projecting and receding by a lock mechanism. A body frame including the main frame 10 is covered with a body cover 44. The body cover 44 is continuous with the outline face of the battery case 20 and covers the motor side connector 26, a battery side connector 100, the lock pin 126, a locking plate of the battery case on the object side, and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention 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 Application Laid-Open No. 5-319104 discloses that a rear part of a battery case provided with a battery-side connector is fitted into a support box provided on a frame of the electric bicycle. It shows that the battery-side connector is connected to the motor-side connector and the battery-side connector provided in the support box. In addition, the case where the support box is swingably mounted and the case where the support box is fixed are shown.

[0003]

However, in the case of the above-mentioned known example in which the support box is rocked, the mounting and demounting operation is multi-step motion, so the mounting and demounting operation is complicated and troublesome, and the mounting structure is also considerably complicated. And expensive. In addition, in the case of the type in which the support box is fixed, it is not disclosed how to fix the front part of the battery case,
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.

[0004] In such a connection type between the battery-side connector and the motor-side connector, the battery case is not sufficiently set, and a better locking mechanism is desired.
In addition, it is necessary to consider the appearance of the contacts and the lock structure. The present invention satisfies these requirements.

[0005]

According to a first aspect of the present invention, there is provided a battery case mounting structure for an electric two-wheeled vehicle, wherein a frame of a vehicle body is disposed vertically between a front wheel and a rear wheel. And an electric bicycle having a battery case removably mounted along a frame of the vehicle body and containing a battery therein, wherein a battery-side connector having a terminal electrically connected to the battery is provided at a lower end of the battery case. The battery-side connector is attached to and detached from the motor-side connector by attaching the motor-side connector provided with a terminal electrically connected to the motor-side to the vehicle-body side and sliding the battery case in a substantially longitudinal direction of the frame of the vehicle-body. The battery case is provided with a lock device that directly engages a lock pin that appears and disappears by operating the lock. From above the battery case, the lower end of the battery case is slid in the substantially longitudinal direction of the vehicle body frame while the battery case is vertically moved while the longitudinal direction of the battery case is substantially parallel to the longitudinal direction of the vehicle body frame. It is characterized by being detachable.

According to a second aspect of the present invention, in the first aspect,
A rotatable handle is provided at an upper end of the battery case.

According to a third aspect of the present invention, in the first aspect,
The vehicle body frame may include a vehicle body cover that is continuous with an outer surface of the battery case.

[0008] The invention of claim 4 is the above-mentioned claim 3,
The vehicle body cover may be formed so as to cover the motor-side connector in a side view.

According to a fifth aspect of the present invention, in the third or fourth aspect, the vehicle body cover is formed so as to cover the lock pin in a side view.

[0010]

According to the first aspect of the present invention, the lower end of the battery case is moved vertically from the upper side of the frame of the vehicle body while the longitudinal direction of the battery case is substantially parallel to the longitudinal direction of the frame of the vehicle body. The battery case can be attached and detached by sliding the frame substantially in the longitudinal direction.

Therefore, the attaching / detaching operation is a continuous operation closer to the one-stage motion as compared with the conventional multi-stage motion. Moreover, since the operation can be performed from the upper side of the frame of the vehicle body, the attachment / detachment operation is easy and quick. Moreover, the structure is relatively simple. In addition, since a lock device that directly engages a lock pin that appears and disappears by operating the lock is provided, and by moving the lock device downward, the battery connector provided at the lower end of the battery case can be connected to the motor connector on the vehicle body. A good lock structure can be obtained, and the set state of the battery case can be ensured.

According to the second aspect, since the rotatable handle is provided at the upper end of the battery case, the battery case can be quickly mounted.

According to the third aspect, the vehicle body frame is provided with the vehicle body cover which is continuous with the outer surface of the battery case.
The appearance is improved.

According to the fourth and fifth aspects, since the motor-side connector and the lock pin are covered in a side view, sufficient external consideration is given to the contacts and the lock structure of the motor-side connector.

[0015]

1 to 7 show a first embodiment of the present invention. FIG. 2 is a side view of the bicycle with auxiliary power according to the present embodiment, and includes a front frame 6 having a V-shaped side view between the front wheel 2 and the rear wheel 4. The front frame 6 includes a main frame 10 that extends linearly obliquely downward and rearward 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.

A front fork 16 for supporting the front wheel 2 at a lower end thereof and a steering post 19 having a handle 18 attached to an upper end thereof are rotatably supported on the head pipe 8. 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 along the main frame 10 and is detachably mounted between the front fixing portion 22 and a motor-side connector 26 which is a male connector. I have. Reference numeral 24 denotes 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 substantially horizontally rearward, and a rear end thereof includes a pair of right and left rear stays 3 extending obliquely downward from the upper end of the seat frame 14 and downward.
4 together with the rear end to a bracket 36 to form a rear frame 37. With this bracket 36, the rear wheel 4
The rear wheel axle 5 and the driven sprocket 38 are rotatably supported.

A saddle seat 42 is supported at the upper end of the seat frame 14 via a seat post 40.
The periphery of the front frame 6 and the auxiliary power unit 30 is covered with a vehicle body cover 44. The vehicle body cover 44 is divided into left and right parts, the front end of which covers the front fixing part 22 and the front part of the battery case 20, and the slope wall 45 coincides with the front side surface of the battery case 20 in a side view of FIG. It is continuous with the outer shape of the front end of the battery case 20 in the attached state.

At the lower end of the battery case 20, an inclined wall 46 is formed on the rear side surface of the vehicle body cover 44 so as to rise rearward and obliquely in the side view of FIG. An opening is formed in a front portion of the vehicle body cover that covers the seat frame 14 and is closed by a front panel 48, and the front panel 48 is continuous with a rear end of the battery case 20. Thus, the rear portion of the vehicle body cover 44 is continuous with the rear end outer shape of the battery case 20 in the mounted state.

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

A pedal 57 is mounted on the crankshaft 56, and is manually driven by stepping on the foot. At this time, the motor 52 rotates with electric power supplied from the battery in the battery case 20 to provide 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 driving sprocket 58.

FIG. 1 is a side view showing the front frame 6 with the body cover 44 removed, and FIG.
4 is a partially cutaway side view of the battery case 20, FIG. 5 is a diagram showing a front-side mounting structure of the battery case 20, and FIG. FIG. 7 is a view from the side (Z direction indicated by the arrow in FIG. 1), and FIG. 7 is a view illustrating a rear-side mounting structure of the battery case 20.

As is apparent from FIG. 1, the front 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 is indicated by a solid line A in which the front end is locked by a lock device with the lower end fitted to the motor-side connector 26 and a virtual line B in which the lock device is unlocked and the front end is lifted. Pop-up position can be taken.

The position indicated by the virtual line C is the main frame 10
In a state (or a state before attachment) in a direction substantially perpendicular to the length direction (the direction indicated by the arrow X). The battery case 20 is slidable substantially along the length direction of the main frame 10 (the direction indicated by the arrow Y) when changing between the mounting position A and the pop-up position B.

As apparent from FIG. 3, the battery case 2
Numeral 0 is a plastic member composed of an upper case 60 and a lower case 62 which are divided into two parts in the vertical direction, and the meeting portions 64 of the two form alternately overlapping steps, thereby forming a labyrinth structure to form water. Is prevented.

A battery pack 66 is accommodated in the battery case 20, and an upper portion is formed to protrude downward on the inner surface of the upper case 60 and is contacted by a groove rubber 70 attached to a rib 68. Are supported by a plate-like cushion rubber 74 interposed between the bottom of the lower case 62 and the bottom 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. When the battery case 20 is mounted on the vehicle body cover 44 by a leaf spring 78 extending downward from the upper part, a lower case 62 is provided. The projection 73 is formed by pressing a projection 73 formed downward on the bottom 72 of the panel, and is turned off when it is in a pop-up position described later.

As apparent from FIG. 4, the battery case 2
The upper case 60 and the lower case 62 are engaged with engaging claws 80 projecting upward from the lower case 62 on the front half of the side, and fastened with a tapping screw 82 on the second half, so that the two can be separated. It is integrated. A rubber cushion material 84 is interposed on the lower front half of the lower case 62 when the lower case 62 is attached to the main frame 10.

A handle 86 is attached to the front end of the battery case 20 so as to be rotatable, and an inclined step 88 is formed on the side surface.
4 and a slope wall 45 provided at the front part of FIG. 4 (FIG. 1). Battery case 20 in attached state
, The lock device 24 and the lock pin 126 are covered by the front end of the vehicle body cover 44 (FIG. 1, FIG. 1).
2). The lower part of the front surface 90 is a notch-shaped pressing step 92 that bites rearward.

At the lower end of the battery case 20,
A rear slope 94 is formed on the rear side surface so as to rise obliquely rearward, and matches the slope wall 46 provided at the rear of the vehicle body cover 44 that covers the lock device (FIG. 2). The rear end of the battery case 20, the motor-side connector 26, and the battery-side connector 100 in the mounted state are covered by a rear portion of the vehicle body cover 44 (FIGS. 1 and 2).

The rear surface 96 of the upper case 60 has a rear slope 94
It is formed on a slope inclined in reverse. Further, a battery-side connector 100, which is a female connector, is attached to the lower end of the battery case 20 with screws 98 or the like. A rear surface 102 of the battery-side connector 100 forms an abutment surface of a motor-side connector described later, and an approximately triangular positioning engaging protrusion 104 projects from the center at a central portion thereof. The rear end of the bottom of the battery-side connector 100 forms a guide slope 106 which is inclined upward and rearward.

The battery pack 66 includes a number of unit batteries 11
0 are connected in series and arranged in two stages.
11 is a battery pack packed into one. Unit battery 11
Reference numeral 0 denotes a rechargeable battery of an appropriate type such as a Ni-Cd battery.

Adjacent unit batteries 110 are connected in series by a conductive plate 112, and are connected via a fuse 114 to a discharge terminal of a battery-side connector 100 described later. Reference numeral 116 in the figure denotes a temperature detecting thermistor, 117
Is a 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 can be charged in any state regardless of whether the battery case 20 is mounted or removed.

FIG. 5 shows a detailed structure of the front fixing portion 22 with respect to the battery case 20. The front fixing portion 22 includes a lock device 24 and a pop-up mechanism. Lock device 2
Reference numeral 4 denotes a front bracket 1 provided between the head pipe 8 and a front end of the main frame 10 and having a substantially L-shaped cross section.
20 is attached to the vertical wall portion 122 extending in the vertical direction.

The lock device 24 is provided with a key 124 (FIG. 6).
Thus, the combination switch serves as a main switch function for turning on / off the power and a lock switch 126 for locking / unlocking the battery case 20 by inserting / leaving the lock pin 126 into / from a lock hole 128 formed in the front surface 90.

When the key position of the lock device 24 is in the ON position, the lock pin 126 is locked and the key 124 is locked.
Cannot be removed and the motor 5
When the switch 2 is in the OFF position, the power supply is stopped and the key 124 can be removed, but the lock pin 126 remains locked. When the key 124 is turned to the lock position from the off position by pressing and turning, the lock pin 12
6 is unlocked and the battery case 20 can be removed.

A lock plate 132 is attached to the inside of the front surface 90 by screws 130 to reinforce the front surface 90, and has an opening 134 corresponding to the lock hole 128. Further, the lower end portion forms a step portion which extends to the pressing 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 vertical 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 rotating in a counterclockwise direction. A biasing tension spring 146 (FIG. 1) is provided.

As is apparent from FIG. 6, the stays 140 are provided in pairs so as to protrude forward with an interval in the vehicle width direction, and each has a long hole 148 extending long in the front-rear direction.
Are 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 plan view, and a pair of left and right flat portions 150 are overlapped on the outside of each stay 140.

The slide shaft 142 extends in the direction transverse to the space between the left and right flat portions 150 through the elongated holes 148 on the left and right stays 140. It is swingably connected around.

A portion of the swing arm 144 extending in the vehicle width direction and connecting the left and right flat portions 150 forms a pressing portion 152, and is pressed against the unlocking pressing surface 136 or the locking pressing surface 138 of the lock plate 132. It is possible.

The tension spring 146 is a pair of coil springs provided on the left and right side surfaces of the main frame 10 along the length direction. The tension spring 146 has a mounting projection 154 (FIG. 1) formed at the front end of the flat portion 150 so as to protrude downward. ), The front mounting portion 156 is locked, and the rear mounting portion 157 is connected to the main frame 1.
It is locked to a protruding portion 158 protruding toward the side surface of the zero. Providing a pair ensures the operation of the pop-up mechanism.

The tension spring 146 urges the swing arm 144 to always pull backward, and
2 is urged to rotate counterclockwise. Therefore, at the time of the pop-up position indicated by the virtual line B, the swing arm 1
44 is pulled backward, the slide shaft 142 moves to the rear end of the elongated hole 148, and the pressing portion 152 pushes the pressing surface 136 when unlocked to lift it upward.
Most of the pulling force of 46 acts as the push-up force F1.

When the battery case 20 is mounted as shown by the solid line A, the unlocking pressing surface 136 pushes the pressing portion 152 downward in the clockwise direction.
Is substantially parallel to the length direction of the main frame 10, and the pressing portion 152 is
4 is pushed forward, and the slide shaft 142 is
8 to the front end.

Therefore, the reaction force of the tension spring 146 is a force of the pressing portion 152 pressing the unlocking pressing surface 136 and the locking pressing surface 138. However, the force F2 by which the pressing portion 152 presses the locking pressing surface 138 rearward is equal to the unlocking pressing surface 13.
6 is significantly larger than the force F3 for pushing up. 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 pressing portion 152 rotates counterclockwise to push up the unlocking pressing surface 136 that comes into contact.

Reference numerals 121 and 159 in FIGS. 1 and 5 denote indicators for indicating a stay for mounting the vehicle body cover 44 provided on the upper portion of the front bracket 120, an ON position of the lock device 24, a remaining battery level, and the like. .

As is apparent from FIG. 1, the battery case 2
The motor-side connector 26 for fitting the battery-side connector 100 provided at the rear of the main frame 10 is provided in the vicinity of the intermediate portion 12 of the main frame 10, and as shown in FIG. The lower end portion is overlapped with the front center portion 49 and attached with screws 162 and nuts 164.

The inclination of the front central portion 49 of the lower end portion and the inclination of the rear surface 96 coincide with each other with a slight gap provided when the battery case 20 is attached. The lower attachment portion 166 of the motor-side connector 26 is also attached to the vehicle body cover 44 by attachment means such as screws (not shown).

When the battery-side connector 100 is mounted, the rear surface 168 of the motor-side connector 26
The contact surface 170 that positions the battery case in the longitudinal direction is formed by the contact. Engagement projection 10 for positioning
4 is provided with a projection 172c having an engagement recess 172 into which it is fitted, and a guide surface 174 having substantially the same inclination is formed at a position corresponding to the guide slope 106.

The engagement recess 172 is formed larger than the engagement protrusion 104. When the battery case 20 is attached, the top 1 of the engagement projection 104 is
04a comes into contact with the battery case 20 to position the battery case 20 in the vertical direction.

The lower inclined surfaces 172b and 104b of the engagement recess 172 and the engagement projection 104 have the same degree of inclination, but a certain gap is formed between them.

A pair of pin-shaped motor terminals 176 are provided on the left and right sides of the contact surface 170, and the tip 178 protrudes inward of the battery case 20. Rear end 18
Numeral 0 goes out of the back surface 168 to the outside and is connected to the cord 182. The cord 182 is connected to the control unit 50.

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 made to coincide with the slope wall 46 of the battery case 20 with a slight gap (FIG. 1).

The upper portion 190 of the battery-side connector 100 is inside the upper case 60. The lower portion 192 is attached with screws 99 from outside the rear wall 63 (FIG. 4) of the lower case 62. The rear portion of the lower portion 192 has a central portion projecting outward from the central portion of the rear wall 63 (FIG. 4) to the outside rear.
A rear surface 102 and an engagement protrusion 104 are formed here, and a terminal access hole 194 is formed at a position corresponding to the motor terminal 176.

The terminal access hole 194 communicates with a concave portion 195 formed on the lower case 62 side of the lower portion 192, and the length of the motor terminal 176 is such that when the battery case 20 is mounted, the distal end portion 178 has the terminal access hole 194. Through the recess 195
It can be protruded into the inside.

In the recess 195, the discharge terminal 1 in the form of a leaf spring is provided.
Nut 96 is disposed vertically long, is formed at the upper end, and is fixed to upper portion 190 in advance by U-shaped portion 197.
It is screwed to 91 and is electrically connected to the battery pack 66.

The free end 198 at the lower end covers the outlet facing the recess 195 of the terminal access hole 194 as shown by the imaginary line, and the tip 178 of the motor terminal 176 is attached when the battery case 20 is mounted. When protruding into the concave portion 195 through the terminal access hole 194, as shown by a solid line, the distal end 178 is pushed forward and elastically deformed, and the distal end 178 and the free end 198 come into contact with high contact pressure. I have.

Incidentally, the mounting position (solid line A) and the pop-up position (virtual line B) of the battery case 20 in FIG.
In any case, the leading end portion 178 is fitted into the terminal access hole 194 and comes into contact with the free end 198 to be in a conductive state. Therefore, when in the pop-up position, the limit switch 76 is turned off to cut off the power supply from the free end 198 to the tip 178, and the limit switch 76 is turned on only in the mounted state to supply power.

The connection and separation between the motor-side connector 26 and the rear side of the battery case 20
1 in the direction indicated by the arrow Y in FIG.
76, and at the same time, the engagement protrusion 104 of the battery-side connector 100 is moved into and out of the engagement recess 172 of the motor-side connector 26. At this time, the stroke amount of the battery case 20 in the direction indicated by the arrow Y is covered by the stroke of the slide shaft 142.

As is apparent from FIG.
Since the motor terminals 176 are paired on the left and right, they are formed in a pair on the left and right with the partition 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 into the groove. Sign 1
Reference numeral 90a denotes a positioning protrusion of the motor-side connector 26 with respect to the battery case 20.

Next, the operation of the present embodiment will be described. FIG.
At the mounting position indicated by the solid line A of FIG.
The lower end of the battery connector 100 is fixed to the motor-side connector 26 by directly fitting the battery-side connector 100 provided here. In addition, since the battery case 20 is pressed rearward by the tension spring 146 via the swing arm 144, the contact pressure between the free end 198 and the tip 178 of the motor terminal 176 can be increased, and chattering between the two terminals due to vehicle vibration can be achieved. The contact life change can be prevented, and the terminal life can be extended.

At this time, the free end 198 has a leaf spring shape,
It is effective to further increase the contact pressure because the tip portion 178 is in contact with the elastic portion while deforming it elastically, and the contact pressure is expected to increase due to its own weight even when the battery case 20 is inclined obliquely upward and forward. it can.

Further, by fitting the engaging projections 104 into the engaging recesses 172, the vertical direction of the battery case 20 can be positioned, so that the battery case 20 can be prevented from falling off. Moreover, since the battery-side connector 100 provided at the lower end of the battery case 20 is fitted into the motor-side connector 26 and fixed by direct contact, the positioning of the motor terminal 176 and the free end 198 is ensured, and the precision of the parts is improved. The play between the terminals can be ensured by minimizing the play due to the variation.

Next, when the battery case 20 is removed, when the lock device 24 is unlocked by the key 124, the swing arm 144 is moved by the spring force of the tension spring 146 so that the slide shaft 142 is moved to the rear end of the elongated hole 148. 1 and 5, and at the same time swings counterclockwise to push up the front part of the battery case 20, as shown by the phantom line B in FIGS. By pulling the handle 86 in a direction substantially perpendicular to the length direction of the main frame 10 (the direction indicated by the arrow X in FIG. 1), the main frame 10 can be easily removed as indicated by a virtual line C.

In order to mount the battery case 20, first, as shown by a virtual line C in FIG.
Move downward in a direction substantially perpendicular to the length direction of the main frame 10 (in the direction indicated by the arrow X in FIG. 1), and further slide rearward substantially parallel to the length direction of the main frame 10 (the direction indicated by the arrow Y in FIG. The battery-side connector 100 is fitted to the motor-side connector 26.

As a result, the engagement projection 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 operations are performed smoothly and reliably by the positioning action of the motor-side connector 26. At this time, the leading end 178 and the free end 198 are in a conductive state.
Since the limit switch 76 is still off, the energization is stopped, and the durability of the terminal is increased.

At this time, the swing arm 144 is at the position indicated by the imaginary line, and the unlocking pressing surface 136 of the front part of the battery case 20 comes into contact with the pressing portion 152 of the rocking arm 144. Since the pushing force of the tension spring 146 acting on the battery case 20 supports the weight of the battery case 20, the battery case 20 is in a pop-up position in which the front side is slightly inclined upward as shown by a virtual line B.

As shown in this pop-up position, when the lock device 24 is not locked, the battery case 20 is not sufficiently set. If the vehicle is to be driven with the battery device 20 kept running, the motor terminal 176 and the free end 198 are not used. Becomes uncertain. However, according to the present embodiment, since the pop-up position is always set in such a case, the lock can be surely made immediately by visual confirmation.

Subsequently, when the front end of the battery case 20 is pressed down, the unlocking pressing surface 136 pushes the pressing portion 152 clockwise, so that the swing arm 144 resists the spring force of the tension spring 146. Slide shaft 14
2 moves in the elongated hole 148 and is pushed in until it reaches the front end, and slides forward, so as to be in the state shown by the solid line.

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 14 acting on the pressing portion 152 is locked.
In the spring force of No. 6, the force by which the pressing surface 138 at the time of locking is pushed backward increases, and the battery case 20 is pushed backward.
Therefore, the battery-side connector 100 is more strongly pushed into the motor-side connector 26 and can be securely fixed.

At this time, the guide inclined surface 106 is
4, the top 104a of the engagement protrusion 104
Abuts against the top surface 172a of the engagement recess 172 and is positioned vertically, and the tip 178 of the motor terminal 176 is provided.
Can penetrate deeper into the concave portion 195, and the free end 198 side of the discharge terminal 196 can be elastically deformed further forward.

This attaching / detaching operation is a continuous operation closer to one-stage motion than conventional multi-stage 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.

As described above, according to the present embodiment, the battery case 20 is moved vertically from above the main frame 10 in a state where both longitudinal directions thereof are substantially parallel to each other.
The lower end can be attached and detached by sliding the lower end substantially in the longitudinal direction of the main frame 10.

Further, a lock device 24 is provided for directly engaging a lock pin 126 which appears and disappears by operating the lock, and the battery side connector 100 provided at the lower end of the lock device 24 is moved downward by moving the battery case 20 downward. Since it can be connected to the motor-side connector 26, a good lock structure can be obtained, and the set state of the battery case 20 can be ensured.

Further, since the rotatable handle 86 is provided at the upper end of the battery case 20, the battery case 20 can be quickly mounted.

Further, since the vehicle body frame is provided with the vehicle body cover 44 which is continuous with the outer surface of the battery case 20, the appearance is improved.

Further, the motor-side connector 26 is viewed from the side.
And the battery side connector 100 and the lock pin 126
In addition, since the lock plate 132 and the like on the other side are covered, sufficient external consideration is given to the contacts and the lock structure of the motor-side connector 26.

FIG. 8 is a side sectional view showing another embodiment of the pop-up mechanism, FIG. 9 is a view in the direction of the arrow X, and FIG.
FIG. In these figures, the pop-up mechanism of the present embodiment includes a swing plate 200, a hinge shaft 2
02, a hinge fitting 204, a push rod 206, and a compression coil spring 208.

One end of the hinge fitting 204 is connected to the swing plate 200
Front end curl portion 210 entering notch portion 201 (FIG. 10)
The hinge shaft 202 is rotatably wound around an intermediate portion thereof. Both ends of the hinge shaft 202 are wound at both ends on one end side of the rocking plate 200.

The other end 212 of the rocking 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 at the inner center of the other end 212. The compression coil spring 208 is attached around the push rod 206, and is compressed and mounted between the flange 216 and the outer periphery of the hinge fitting 204.

The hinge fitting 204 is wound around a rotating shaft 222 rotatably supported between a pair of stays 220 attached to the main frame 10. A long groove 224 is formed in the circumferential direction of the hinge fitting 204. The rotation shaft corresponding to the long groove 224 has a through hole 2 in the direction orthogonal to the shaft.
26 (FIG. 8) is formed, and the other end 228 of the push rod 206 that has penetrated this through hole has passed. Long groove 2
Reference numeral 24 denotes the push rod 20 with the rotation of the rotation shaft 222.
6 allows the other end 228 to swing.

In this way, when the pop-up position B is reached, the compression coil spring 208 extends most and the swing plate 2
00 is pushed upward with the other end 212 side facing obliquely upward. When the other end 212 of the swing plate 200 is pressed down from this state, the hinge fitting 204 is elastically deformed and pushes the swing plate 200 forward, and the compression coil spring 208 is compressed to push the push rod 206 forward. The swing plate 200 swings downward.

For this reason, the swing plate 200 is urged to swing in the counterclockwise direction by the resilience of the compression coil spring 208, and the other end portion 212 has a upward pushing force and a larger rearward force. A pressing force directed toward is generated as a component force. The other points are the same as those of the previous embodiment, and the common parts are indicated by the same reference numerals.

FIG. 11 is a side sectional view showing still another embodiment of the pop-up mechanism. In this example, the first embodiment is described.
This is equivalent to a configuration in which a mounting portion of a tension spring is changed with respect to the swing arm 144 of the embodiment, and the other portions are the same as those of the first embodiment. The difference is that a hook-shaped engaging portion 300 is integrally protruded from an intermediate portion of the flat portion 150, and a locking rod 304 of a tension spring having a bent portion 302 bent at an obtuse angle at the intermediate portion is connected to a hook-shaped tip. (Not visible in this drawing). By doing so, the assemblability when attaching the locking rod 304 of the tension spring is improved.

The present invention is not limited to the above embodiments and can be variously modified. 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 but may be another frame portion.

[Brief description of the drawings]

FIG. 1 is a side view of a main part 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 in FIG. 1;

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

FIG. 5 is a diagram showing a front-side mounting 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 a battery case from a Z direction shown by an arrow 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 sectional side view of a main part according to a second embodiment.

9 is a view in the direction indicated by the arrow X in FIG.

10 is a view in the direction indicated by the arrow Y in FIG. 8;

FIG. 11 is a sectional side view of a main part according to a third embodiment;

[Explanation of symbols]

10: Main frame, 20: Battery case, 22:
Front fixed part, 24: lock device, 26: motor side connector, 44: body cover, 45: slope wall, 46: slope wall,
48: front panel, 86: handle, 88: step, 9
0: rear slope, 100: battery side connector, 126:
Lock pin

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masahiro Kuroki 1-4-1 Chuo, Wako-shi, Saitama F-term in Honda R & D Co., Ltd. (Reference) 5H040 AA00 AA12 AS05 AY12 CC40 DD05

Claims (5)

[Claims] 1. An electric bicycle comprising a frame of a vehicle body vertically disposed between a front wheel and a rear wheel, and a battery case removably mounted along the frame of the vehicle body and containing a battery therein. At the lower end of the battery case, a battery-side connector having a terminal electrically connected to the battery is provided, and a motor-side connector having a terminal electrically connected to the motor side is attached to the vehicle body. The battery-side connector is configured to be disengageable from the motor-side connector by being slid in a substantially longitudinal direction of the frame, and the battery case is provided with a lock device in which a lock pin that comes and goes by a lock operation is directly engaged. From the top of the body frame, move the battery case up and down with the longitudinal direction of the battery case approximately parallel to the longitudinal direction of the body frame A battery case mounting structure for an electric motorcycle, wherein a lower end portion of the battery case is slid in a substantially longitudinal direction of a frame of the vehicle body while being moved, and the battery case is attached and detached. 2. The battery case mounting structure for an electric motorcycle according to claim 1, wherein a rotatable handle is provided at an upper end of the battery case. 3. The battery case mounting structure for an electric motorcycle according to claim 1, wherein the body frame includes a body cover that is continuous with an outer surface of the battery case. 4. The battery case mounting structure for an electric motorcycle according to claim 3, wherein the vehicle body cover is formed so as to cover the motor-side connector in a side view. 5. The battery case mounting structure for an electric motorcycle according to claim 3, wherein the vehicle body cover is formed so as to cover the lock pin in a side view.