JP2001239938A - Motor-driven carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor-driven carriage easy in attaching a battery and unhindering to operation. SOLUTION: A battery rack 10 is installed on a back pipe 4 arranged on a side surface in the rear of a car body, and the battery 11 is installed along the back pipe 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric truck equipped with a battery.

[0002]

2. Description of the Related Art For example, in a transportation trolley disclosed in Japanese Patent Application Laid-Open No. 7-33026, a battery is disposed on the lower surface of a vehicle body. Such an arrangement of the battery is preferable in that it does not hinder the operation, but it is troublesome to remove the battery from the vehicle body during charging or replacement. On the other hand, Japanese Patent Application Laid-Open No. 9-109894
The battery in the electric transporter disclosed in Japanese Patent Application Publication No. H10-15064 is provided at a central portion behind the vehicle body so as to be hung from a handle. The battery in this case is preferable in that it can be easily removed. However, in a normal operation, the battery is located at a position where the operator's body is easy to touch, which hinders the operation.

[0003] In view of the above-mentioned conventional problems, an object of the present invention is to provide an electric bogie in which a battery is easily detachable and does not hinder operation.

[0004]

According to the present invention, there is provided an electric bogie having a battery mounted thereon, wherein the battery is mounted along a frame erected on a rear side surface of the vehicle body. (Claim 1). The battery in the electric trolley configured as described above is arranged at a position avoiding the operator's body during normal operation. In addition, it is arranged at a position where an operator's hand can easily reach when attaching and detaching. Therefore, the battery does not hinder the operation, and the battery can be easily attached and detached.

[0005] In the electric bogie (Claim 1), a terminal portion may be provided on the lower surface of the battery (Claim 2). In this case, due to the weight of the battery, the terminal of the battery is pressed against the terminal on the vehicle body side.

[0006] In the electric trolley (claim 2), it is preferable that the battery is mounted obliquely (claim 3). In this case, since the lower surface of the battery is also inclined, rainwater or the like that has entered the gap between the lower surface and the vehicle body naturally flows out.

In the above-mentioned electric trolley (claim 2 or 3), a support member for receiving a lower portion of the battery and engaging with the vehicle body, and a fixing member for fixing the upper portion of the battery to the vehicle body may be provided. Claim 4). in this case,
If the battery is placed on the support member and only the upper part is fixed by the fixing member, the battery is held by the vehicle body at each of the upper and lower parts. Further, the battery can be removed only by removing the fixing at the upper part.

In the above-mentioned electric trolley (claims 1 to 4), the battery may be formed with a concave portion in the shape of a vertical groove, and a guide rod engaged with the concave portion may be provided along the frame. Item 5). In this case, the battery is positioned at a predetermined position by aligning the recess with the guide rod.

[0009] In the electric bogie (claim 5), the guide rod may be a pipe, and a power switch wired through an electric wire may be provided above the guide rod. 6). In this case, the wiring of the power switch is hardly exposed. In addition, the power switch is located above the guide bar, so that it is easy to operate.

Further, in the electric bogie (Claim 1), a handle inclined from above the frame toward the rear of the vehicle body may be provided (Claim 7). In this case, the operation portion of the handle is pulled out to the rear of the vehicle body, so that it is easy to secure an operation space.

[0011]

FIG. 1, FIG. 2 and FIG. 3 are side views of an electric bogie according to a first embodiment of the present invention, respectively.
It is a rear view and a top view. The electric trolley is used, for example, as a transporter of lactic acid bacteria drink. In FIG. 1 with reference to FIGS. 2 and 3, a vehicle body 1 is configured by welding, fastening, or fitting metal pipes, flat plates, and the like, and mainly includes a frame base 2 and a rear portion of the frame base 2. A back pipe 4 composed of a square pipe erected on both right and left sides of the vehicle body via a mounting member 3, a left and right side frame 5 connecting the back pipe 4 and the frame base 2, and a connection to the back pipe 4. A handle 6 is provided to be inclined rearward of the vehicle body from the upper end of the back pipe 4. Casters 7 are attached to the left and right of the front end of the frame base 2, and drive wheels 8 are attached to the left and right of the rear side. A part of the drive unit that drives the drive wheels 8 and the control unit that controls the drive unit are a control unit case 9 (FIG. 2) attached to the lower surface of the frame base 2.
Housed within. A battery rack 10 is attached to the right back pipe 4. A battery 11 is attached to the battery rack 10 vertically along the back pipe 4. A toggle-type switch (power switch) 15 is provided on the upper back side of the right back pipe 4. By operating this switch 15, the electric assist function is turned on / off. Stands 16 and 17 are welded to the battery rack 10 and the left back pipe 4 to support the vehicle body when folded upright.

The handle 6 comprises an operating lever 61 connected to the back pipe 4 and a horizontal operating portion 62 connecting the left and right operating levers 61. A cover member 621 made of sponge or rubber-like material is covered from the grip position of the operation portion 62 to the upper end of the operation lever 61. The handle 6 is held so as to be able to slightly swing in the vehicle longitudinal direction about a pin 18 provided on the back pipe 4. By the swing, the potentiometers 19 (FIG. 2) provided inside the left and right back pipes 4 are configured to be driven, respectively, according to the operation force applied to the left and right grip positions of the operation unit 62. Thus, the resistance value of the potentiometer 19 changes. The control unit in the control unit case 9 receives this,
An electric assist force corresponding to the operation force is generated in the left and right drive units.

Brake levers 12 are attached to the left and right grip positions of the operation unit 62. By operating the brake levers 12, the brake levers 12 (FIG. 2) are used to drive the inside of the drive wheels 8 (vehicle width). The brake device 14 (FIG. 1) mounted on the inside (in the direction) can be activated. Further, a parking brake including a parking brake lever 30 and two brake rods 31 (FIG. 3) is also provided. By operating the parking brake lever 30 in the horizontal right direction in FIG.
Is inserted between the rims 8a (FIG. 1) of the driving wheels 8 to apply the parking brake.

Next, the mounting structure of the battery 11 will be described in detail. 4 is a longitudinal sectional view showing a mounting structure of the battery 11, FIG. 5 is a longitudinal sectional view showing a state where the battery 11 is removed, and FIG. The battery 11 has an internal structure in which unit cells are stacked, and its cross section is not uniform, but is hatched for simplicity. In FIG.
The battery 11 has a vertically long shape, and has a vertical groove-shaped concave portion 11a (see FIG. 6) formed in a central portion on the front side of the vehicle body.
An upper portion of the battery 11 is provided with a detachable 11b.

The lower part of the battery rack 10 has a screw 100
Support member 101 attached to the back pipe 4 by the
And a guide rod (pipe) 102 vertically welded to the support member 101. The upper surface of the support member 101 is slightly inclined, and therefore, the guide bar 102 is also inclined. The guide rod 102 is connected to the battery 1
1 is designed to fit in the recess 11a.
The battery 11 is guided by engagement (contact) with 1a.
A terminal block 103 is mounted on the upper surface of the support member 101.

FIGS. 7A and 7B are a plan view and a rear view, respectively, of the support member 101 as seen alone. The support member 101 is formed by bending a steel plate into a bag shape. 4 or 7, a hole 101a for communicating with the guide rod 102 is provided on the upper surface of the support member 101.
A rectangular hole 101b for positioning through which a protrusion 11c provided at the lower end of the battery 11 is inserted;
3. A pair of mounting holes 101c and 101d are provided. The terminal block 103 has two electrode rods 10
4 is a molded product through which the holes 101 c and 10
Attach using 1d. The electrode rod 104 becomes a terminal portion on the vehicle body side.

In FIG. 4, electric wires (covered electric wires) 105 and 106 are connected to the
Is connected to one terminal of the switch 15 through the inside of the guide rod 102. The electric wire 107 connected to the other terminal of the switch 15 is drawn downward through the inside of the guide rod 102, and is connected to the control unit in the control unit case 9 (FIG. 2) together with the electric wire 105. . By using the guide rod 102 instead of the conduit, the wiring is not exposed. Therefore, the wiring does not hinder the operation and the mounting of the battery 11. Further, since the switch 15 is located above the guide bar 102, the guide bar 102 and the battery 11 do not hinder the switch operation, and operability can be ensured. The switch 15 is mounted on a mounting bracket 114 welded to the upper end of the guide rod 102.

On the other hand, the upper part of the battery rack 10 is shown in FIG.
As shown in FIG. 5, a pair of support members 108 welded to the guide rod 102 and fixed to these by bolts 109 and the like,
The back plate 111 includes a channel-shaped back plate 111 attached to the back pipe 4 by screws 110, and a belt (fixing member) 112 attached to belt through holes 111a provided on both side surfaces of the back plate 111. . The belt 112 binds the battery 11 via a detachable connector 113.

In the above-described battery mounting structure, to mount the battery 11, first, the battery 1
The lower portion 11a is lowered while being positioned substantially along the guide rod 102 so as to cover the guide rod 102, and the protrusion 11c is inserted into the hole 101b of the support member 101. Thereby, the battery 11 is accurately positioned and the electrode rod 104
Is inserted into the battery 11, and the terminal portion 11 d which is located deeper than the lower surface of the battery 11 is electrically connected to the electrode rod 104. In this state, the battery 11 has already been
01 and is inclined and abuts against the back plate 111, so that it is stable. Also, due to the weight of the battery 11, the terminal portion 11d of the battery 11 is pressed against the electrode rod 104 on the vehicle body side with a constant force. Therefore, a favorable electrical contact state between the terminal portions can be ensured. next,
The connector 113 of the belt 112 is connected, and the battery 11
Is securely fixed. Conversely, the battery 113 can be easily removed by removing the connector 113 and lifting the battery 11 along the back plate 111 while holding the connector 11b.

Since the battery 11 is mounted at a position where the hand of the operator can easily reach, the attaching / detaching operation is easy. In addition, the body of the operator when performing a normal operation is located near the center of the rear of the vehicle body, while the battery 11
Are attached to the back of the back pipe 4 avoiding it, and are attached vertically along the back pipe 4.
Therefore, the battery 11 does not hinder normal operation. Further, the operating portion 62 is pulled out rearward because the handle 6 is bent rearward.
It is easy to secure an operation space without being disturbed by the battery 11. On the other hand, since the upper surface of the support member 101 is inclined, even if rainwater or the like enters the gap between the lower surface of the battery 11 and the upper surface of the support member 101, the water flows naturally. Therefore, water does not accumulate around the terminal block 103.

Next, an electric bogie according to a second embodiment will be described. FIGS. 8, 9, and 10 are a side view, a rear view, and a plan view of an electric bogie according to the second embodiment, respectively. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Although the detailed structure of the body frame is slightly different from that of the first embodiment, it is basically the same. The electric bogie according to the second embodiment includes:
It is not equipped with a parking brake as in the first embodiment, but instead has a locking device 12
a (see FIGS. 9 and 10). That is,
The parking brake is configured by locking the brake lever 12 with the brake applied.

The control unit case 201 of this embodiment, which corresponds to the control unit case 9 of the first embodiment, has a rectangular parallelepiped shape, is vertically elongated along the back pipe 4, and
It is arranged vertically. The battery rack 202 is fixed so as to be united with the lower part of the control unit case 201, and is arranged behind the back pipe 4. The battery 203 is held by the battery rack 202. The battery 203 held by the battery rack 202 is arranged so that one side surface of the battery 203 is along the back pipe 4. As shown in FIGS. 9 and 10, the battery rack 202 and the battery 203 are attached so as not to protrude outward from the drive wheels 8 in the vehicle width direction. That is, the battery rack 202 and the battery 203 are mounted within the range of the vehicle width determined by the drive wheels 8. Driving unit 204 that drives driving wheels 8
Are provided at a lower portion of the frame base 2 so as to correspond to the respective drive wheels 8. The drive unit 204 is connected to the control unit case 201 by a cable.

FIG. 11 is an enlarged view of the XI section in FIG. The angle-shaped support member 205 is welded to the back pipe 4. The control unit case 201 is attached to the support member 205. Also, FIG.
FIG. 2 is an enlarged view of a part XII in FIG. L-shaped support member 20
6 is fixed to the back pipe 4 at one end, and the control unit case 201 is attached to the other end. In this manner, the control unit case 201 is attached to the back pipe 4 via the support members 205 and 206 provided on the upper and lower sides.

FIG. 13 is a view of the battery rack 202 with the control unit case 201 and the battery 203 removed, as viewed from the rear side (the same direction as FIG. 9). 14A and 14B are a plan view and a bottom view, respectively, of the control unit case 201 and the battery rack 202 shown in FIG. In FIG. 13, the control unit case 201
Is a main part 201a and a lid part 201 for closing the upper end opening.
b. By removing the lid 201b, it is possible to replace a circuit board or the like attached inside the main body 201a. The cover 201b is provided with a switch (power switch) 15 and an LED 207 for indicating whether the power is on or off (see FIG. 14A). On the lower surface of the control unit case 201, FIG.
As shown in FIG. 5, five terminals are provided,
08a is a potentiometer 19 (FIG. 9) and a terminal 20.
8b is cable-connected to the drive unit 204 (FIG. 9), respectively. The terminal 208c is connected to the battery rack 202.
Is connected to a terminal unit 209 provided on the lower surface of the cable. In FIG. 14A, a concave portion 202 for accommodating a battery 203 is provided on an upper surface of a battery rack 202.
a is formed. Four terminals are provided on the bottom surface of the concave portion 202a, and two terminal portions 210 of them are normally used. A claw 211 for locking the battery 203 is provided on the inner wall surface of the concave portion 202a.

FIG. 15A is a side view of the battery 203, and FIG. 15B is a left side view of the battery 203 shown in FIG. The battery 203 is formed by stacking unit cells in the same manner as the battery 11 in the first embodiment.
a, but more compact than the battery 11 in the first embodiment. Battery 203
A handle 203b is provided at the top of the
An unlock trigger 203c is provided. Case 2
03a, the flange 20
3d is provided. The lock plate 203e projecting downward from one end of the flange 203d is linked to the lock release trigger 203c. When the lock release trigger 203c is lifted by gripping the handle 203b, the lock plate 203e tilts.

FIG. 16A is a plan view of the battery 203, and FIG. 16B is a bottom view. As shown in (a), on the upper surface of the battery 203, a battery remaining amount indicator light 212 composed of a plurality of LEDs is provided. Also,
As shown in (b), four terminals are provided on the bottom surface of the battery 203, and two terminals 213 of the terminals are usually provided.
Is the output terminal.

The user holds the handle 203b of the battery 203 and removes the battery 203 from the battery rack 20 until the flange 203d contacts the upper edge of the battery rack 202.
2, the battery 203 is mounted along the back pipe 4. Battery 2
03 terminal section 213 and the battery rack 202 terminal section 2
10 are connected to each other. When the hand is released from the handle 203b, the lock plate 203e is engaged with the claw 211, and the battery 203 is fixed to the battery rack 202. The terminal portion 213 is pressed against the terminal portion 210 of the battery rack 202 with a constant force by the weight of the battery 203, so that a good electrical contact state between the terminal portions can be secured. Also, the removal of the battery 203 can be performed extremely easily by grasping the handle 203b and lifting it up.

Since the battery 203 is mounted at a position where the hand of the operator can easily reach, the attaching / detaching operation is easy. In addition, the body of the operator when performing a normal operation is located near the center behind the vehicle body,
Numeral 3 is behind the back pipe 4 which avoids it, and is attached along the back pipe 4. Therefore, the battery 203 does not interfere with normal operation.
Although the control unit case 201 is located inside the battery 203, the amount of protrusion toward the rear of the vehicle body is smaller than that of the battery 203 (see FIG. 8).

In the first embodiment, the control unit case 9
Since FIG. 2 is located below the vehicle body, it is not easy to replace a circuit board or the like when a drive circuit element or the like in the control unit case 9 breaks down. The provision of 201 along the back pipe 4 makes it possible to replace the circuit board and the like very easily. On the other hand, the control unit case 201 and the battery rack 20
2, the wiring between them becomes shorter, and the wiring work becomes easier. Further, the control unit case 201 and the battery rack 202 can be easily replaced as one unit.

[0030]

The present invention configured as described above has the following effects. According to the electric cart of the first aspect, the battery is disposed at a position avoiding the body of the operator during a normal operation, so that the battery does not hinder the operation. In addition, since the battery is arranged at a position where the operator's hand can easily reach at the time of attachment / detachment, attachment / detachment is easy.

According to the second aspect of the present invention, the terminal portion of the battery is pressed against the terminal portion on the vehicle body side by the weight of the battery, so that a good electrical contact state between the terminal portions can be secured. .

According to the third aspect of the present invention, since rainwater or the like that has entered the gap between the lower surface of the battery and the vehicle body flows out naturally, water does not accumulate near the terminals provided on the lower surface.

According to the fourth aspect of the present invention, if the battery is placed on the support member and only the upper portion is fixed by the fixing member, the battery is held by the vehicle body at each of the upper and lower portions. Further, the battery can be removed only by removing the fixing at the upper part. Therefore, attachment and detachment of the battery are easy.

According to the electric carriage of the fifth aspect, the battery is positioned at a predetermined position by aligning the recess with the guide rod, so that the positioning of the battery is easy.

According to the electric carriage of the sixth aspect, since the wiring of the power switch is hardly exposed, the wiring does not hinder the operation. In addition, the power switch is located above the guide bar, so that it is easy to operate.

According to the electric cart of the present invention, the operating portion of the steering wheel can be pulled out to the rear of the vehicle body and arranged, so that better operability can be secured.

[Brief description of the drawings]

FIG. 1 is a side view of an electric bogie according to a first embodiment of the present invention.

FIG. 2 is a rear view of the electric bogie.

FIG. 3 is a plan view of the electric bogie.

FIG. 4 is a longitudinal sectional view showing a structure for mounting a battery in the electric bogie.

FIG. 5 is a longitudinal sectional view showing a state where the battery is removed.

FIG. 6 is a cross-sectional view showing a mounting structure on an upper part of the battery.

FIGS. 7A and 7B are a plan view and a rear view of the support member of the electric bogie as seen alone; FIGS.

FIG. 8 is a side view of an electric bogie according to a second embodiment.

FIG. 9 is a rear view of the electric bogie according to the second embodiment.

FIG. 10 is a plan view of an electric bogie according to a second embodiment.

FIG. 11 is an enlarged view of a portion XI in FIG. 8;

FIG. 12 is an enlarged view of a portion XII in FIG. 10;

FIG. 13 is a view of a control unit case and a battery rack in a state where a battery is removed in the electric bogie according to the second embodiment, as viewed from the rear side (the same direction as in FIG. 9).

14A is a plan view of the control unit case and the battery rack shown in FIG. 13, and FIG. 14B is a bottom view.

FIG. 15A is a side view of a battery in the electric bogie according to the second embodiment, and FIG. 15B is a left side view of the battery shown in FIG.

16A is a plan view of the battery shown in FIG. 15, and FIG. 16B is a bottom view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 4 Back pipe 6 Handle 10 Battery rack 11 Battery 11a Concave part 11c Projection part 11d Terminal part 15 Switch 101 Support member 102 Guide rod 103 Terminal block 104 Electrode rod 105-107 Electric wire 111 Back plate 112 Belt 202 Battery rack 203 Battery

Claims (7)

[Claims] 1. An electric bogie equipped with a battery, wherein the battery is mounted along a frame erected on a rear side surface of the vehicle body. 2. The electric bogie according to claim 1, wherein a terminal portion is provided on a lower surface of the battery. 3. The electric trolley according to claim 2, wherein said battery is mounted obliquely. 4. The electric bogie according to claim 2, further comprising a support member for receiving a lower portion of the battery and locking the lower portion to the vehicle body, and a fixing member for fixing the upper portion of the battery to the vehicle body. 5. The electric bogie according to claim 1, wherein a concave portion is formed in the battery in a vertical groove shape, and a guide bar to be engaged with the concave portion is provided along the frame. 6. The electric bogie according to claim 5, wherein the guide rod is a pipe, and a power switch wired through an electric wire is provided above the guide rod. 7. The electric bogie according to claim 1, further comprising a handle that is inclined rearward of the vehicle body from above the frame.