JP2007290416A - Driven-type truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a quick and accurate operation by a simple structure without using an external force detecting means like a sensor. <P>SOLUTION: An operating handle (2) comprising a gripping pipe (8), a pivot part (9), a stay (11), etc. is rotatably mounted on the front face of a body 1a of a truck 1. The pivot part (9) is slidable to front, back, right and left. Each of corresponding switches is turned on according to the slide of the pivot part (9) to front or back, and further to right or left. From the ON/OFF state of the switches, right and left motors 4A, 4B perform predetermined rotation, by which right and left drive wheels 20A, 20B are driven to move back or forth, and are further rotated right or left. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a transport vehicle equipped with a driving device, and is used as a distribution vehicle or the like used to place cooked food on a tray and distribute it to hospitalized patients or residents in hospitals and nursing homes.

  Conventionally, as this kind of transport vehicle, a driving wheel for driving and a driving wheel for steering, a vehicle body provided with a drive unit and an operation unit for driving these drive wheels, and an external force applied to the operation unit are detected. 2. Description of the Related Art There is known a transport vehicle including a driving unit for driving and a control unit for generating a driving force of a steering driving wheel according to a force in a propulsion direction and a steering direction. This transport vehicle is formed of a traveling driving wheel for steering and driving in which the traveling driving wheel and the steering driving wheel are driven independently on the left and right sides to perform differential steering, and each drive wheel is assisted according to an external force in the traveling direction. The force and the assist force according to the external force in the steering direction were added.

Further, as similar to the transport vehicle, the operation portion is formed by an operation handle connected to the vehicle body via a spring, and an external force applied to the operation handle is detected by a non-contact type displacement sensor as an external force detection means, There is also known a wheelbarrow with power assist that gives a driving force based on a detection result.
Japanese Patent No. 3032698 Japanese Patent No. 3170438

  However, in the case of the transport vehicle and the handcart described above, first, the force applied to the operation unit is detected by the external force detection means that is a sensor, and then drive control is performed based on the detection result. Is required to be accurately detected by the sensor, and it is necessary to assist the appropriate driving force based on the detection result, so that the entire control mechanism may become complicated and errors may occur. There was a problem such as becoming higher.

  An object of the present invention is to provide a transport vehicle capable of appropriate operation with a simple configuration without using external force detection means such as a sensor.

  The present invention according to claim 1 is an operation handle for driving, a plurality of switches mechanically switched by movement of the operation handle, and a drive control for performing a predetermined drive control process based on the input state of these switches And a drive source that operates based on an output signal from the drive control unit, and a pair of left and right drive wheels that are individually rotated by the drive source.

  According to a second aspect of the present invention, in the drive-type transport vehicle according to the first aspect, all or a part of the operation handle moves back and forth, right and left, and the switches are a forward switch, a reverse switch, a left turn switch, and a right switch. It consists of a switch for turning, and at least a forward switch or a reverse switch is turned on in conjunction with the back and forth movement of the operation handle, or a right turn switch or a left turn switch is turned on. The left and right drive wheels are rotated forward or backward by the processing in the drive control unit based on the input state, and the forward or backward movement is performed, or further, the rotational speed of the left and right drive wheels is made different, or the rotation direction is changed. It is characterized by turning in the left or right direction by reversing.

  According to a third aspect of the present invention, in the drive-type transport vehicle according to the second aspect, the forward switch, the reverse switch, the left turn switch and the right turn switch are all photo switches, A base member that supports both ends of the support shaft portion of the operation handle is attached to the front surface of the operation handle. One end portion of the support shaft portion is inserted into the circular hole of one base member, and the other end portion of the support shaft portion is the bearing member. One or a plurality of guide bars extending in front of the other base member is attached to the other base member, and the guide bar is inserted into a slide member attached to the bearing member. A forward switch operation projection is provided on the front surface, and a reverse switch operation projection is provided on the rear surface. The left rotation switch operation projection is on the left end of the support shaft and the right turn is on the right end of the support shaft. For Sui A left turn switch is attached to one of the base member and the bearing member, and a right turn switch is attached to the other one of the base member and the bearing member. The left turn or right turn switch operation protrusion enters the light shielding area of the corresponding switch as the slide moves to the left, and the left turn or right turn is performed. A forward switch is provided in front of the operating projection, and a backward switch is provided in the rear of the operating switch operating projection. The slide member slides back and forth as the support shaft moves in the front-rear direction. The switch operation protrusion for reverse or the switch operation protrusion for reverse travel enters the light shielding area of the corresponding switch so as to move forward or backward.

  According to a fourth aspect of the present invention, in the drive-type transport vehicle according to the third aspect, a switch operating lever is provided on the support shaft portion of the operation handle, and the switch operating lever contacts the front side of the transport vehicle main body. An activation switch is attached, and the activation switch is turned on / off by the rotation of the switch operating lever accompanying the rotation of the support shaft.

  According to the driven transport vehicle according to the present invention, the corresponding switch is directly turned on as the operation handle moves back and forth, left and right, etc., and forward or backward, or further left or right turn is performed. The control mechanism can be simplified as compared with the prior art, and quick and accurate operation can be performed. In addition, the manufacturing cost can be kept low by adopting such a structure.

  Next, an embodiment in which the present invention is applied to a layout vehicle will be described with reference to the drawings. However, the present invention is not limited to the embodiment, and various modifications can be made within the scope of the gist. is there.

  In this embodiment, front, rear, left and right and up and down are based on the arrangement vehicle (1) shown in FIG. 2, and the front side means the operation handle (2) side (the lower side in FIG. 2) of the arrangement vehicle (1) shown in FIG. The rear side refers to the opposite side (upper side of FIG. 2) of the operating handle (2) of the layout vehicle (1) shown in FIG. 2, and the left side refers to the left side of the layout vehicle shown in FIG. 2 means the right side (the left side of FIG. 2) in the forward direction of the arrangement vehicle shown in FIG. 2, and the upper side means the front side of the paper sheet of FIG. The side refers to the back side of the drawing sheet of FIG.

  First, the overall configuration of the drive-type arrangement vehicle (1) according to the present embodiment will be described. As shown in FIGS. 1 and 2, a commercially available arrangement is arranged in the main body (1a) of the arrangement vehicle (1). As with the car, a pair of left and right rails for supporting the tray are provided in multiple stages in the vertical direction (not shown). An operation handle (2) having an operation mechanism, which will be described later, is provided on the front side of the layout vehicle (1), and a pair of free wheels are provided on the front surface of the cart (1b) of the layout vehicle (1). (3) is provided, and a pair of left and right drive wheels (20A) and (20B) to which motors (4A) and (4B) that are moved by a control mechanism described later are attached are provided on the rear side. In the drawing, (5A) and (5B) indicate clutches provided as necessary.

  The drive control of the layout vehicle (1) will be described. As shown in FIG. 3, the user (human) of the layout vehicle (1) moves the operation handle (2), so that a plurality of switches (23) (32A) (32B) One or two of the switches (41) is “ON”, and the sequence control circuit (47) performs a predetermined process depending on the signal state of the switch that is “ON”. Based on this, the left and right motors (4A) and (4B) rotate via the D / A conversion circuit (40) and the left and right motor control circuits (48A) and (48B), thereby driving the left and right drive wheels (20A and 20B). Moves to move the vehicle body of the laying wheel (1) forward or backward, and turn left or right. The sequence control circuit (47), the D / A conversion circuit (40), and the left and right motor control circuits (48A) (48B) are included in the control device (50).

  As shown in FIGS. 1, 2, and 4 to 7, the operation handle (2) is provided on the front side of the main body (1 a) of the allocation vehicle (1), and includes a gripping pipe (8), a support shaft (9). And a pair of left and right stays (11) for connecting the support shaft (9) and the gripping pipe (8). Both ends of the support shaft portion (9) protrude left and right through through holes (not shown) formed in one end of the left and right stays (11), and the support shaft portion (9) is more detailed. It consists of a central shaft (10) and an outer push pipe (12). End caps (6) are attached to both ends of the push pipe (12), and the start switch is operated on the outer surface of the right end of the push pipe (12). A lever (7) is provided integrally (see FIG. 6). Further, left and right turning switch operation protrusions (13A) (13B) are formed at both ends of the central shaft (10).

  Next, the mounting structure of the above-described operation handle (2) on the front side of the distribution vehicle (1) will be described. As shown in FIGS. 4 and 5, the right end side of the support shaft portion (9) of the operation handle (2). In the portion, a right-side base member (14) having a substantially inverted L shape as viewed from above is attached to the front surface (1c) of the layout vehicle (1) by a plurality of screws (15), and the right base member (14) protrudes forward. A flange unit (17) for receiving the right end portion of the central shaft (10) is attached to the circular hole (16) formed in the portion (14a). In addition, a substantially sleeve-like member (18) having a spring receiving flange (18a) is inserted into a portion near the right end of the central shaft (10) so as to face the flange unit (17), and the substantially sleeve-like member (18 The coil spring (19) is inserted between the spring receiving flange (18a) and the flange unit (17).

  A substantially inverted L-shaped switch bracket (21) is fixed to the right side surface of the front protrusion (14a) of the right base member (14) with a screw (22) as viewed from above, and is attached to the right side surface of the switch bracket (21). Is equipped with a right turn photo switch (23). The right turning switch operating projection (13B) at the right end of the central shaft (10) is allowed to enter through the coil spring (19) into the light shielding area (23a) of the right turning photo switch (23). ing.

  As shown in FIG. 6, on the front surface of the right base member (14), a switch mounting member comprising a substantially U-shaped portion (24a) having a transverse cross section and an upright wall portion (24b) standing on the upper edge portion thereof. (25) is fixed with bolts (26), the limit switch (27) for starting is fixed to the front surface of the rising wall (24b) of the switch mounting member (25), and the operating part (27a) is on the right base It protrudes from a through hole (24c) formed in the lower part of the substantially U-shaped part (24a) of the member (14). When the grip pipe (8) of the operation handle (2) is pulled down, the push pipe (12) of the support shaft (9) rotates, and the switch operating lever (7) provided on the right end outer surface thereof Pushes up the actuating portion (27a) of the start limit switch (27) so that the start limit switch (27) is turned on.

As shown in FIGS. 4 and 5, at the left end portion of the support shaft portion (9) of the operation handle (2), a plate-like left base member (28) is provided on the front surface (1c) of the ration wheel (1). A plate-like member (29) is arranged at a predetermined interval in front of the left base member (28), and is attached by a plurality of screws (not shown). The plate-like member (29) and the left base member (28) ) Are connected via two guide bars (31A) (31B) provided at predetermined intervals in the left-right direction. That is, the guide bars (31A) and (31B) have their rear end portions fitted into holes (28a) formed in the left base member (28), and their front end portions penetrate the plate-like member (29). And is fixed by a nut (34).
A forward photoswitch (32A) and a backward photoswitch (32B) are attached to the opposing surfaces of the plate member (29) and the left base member (28). The guide bars (31A) (31B) are inserted through a slide member (33) described later. That is, the slide member (33) includes a substantially cubic head portion (33a) and a switch operation wall portion (33b) extending rightward from the right side surface of the head portion (33a), and the right guide bar (31A). Coil springs (51A) (51B) are attached to the front and back of the switch operation wall (33b) with the switch operation wall (33b) in between. A reverse switch operation protrusion (33d) is provided on the rear surface of the switch operation wall (33b), and each of the forward switch operation protrusion (33c) and the reverse switch operation protrusion (33d) is provided. The tip end portions can be freely entered into the light shielding regions of the corresponding photo switches (32A) and (32B) by the coil springs (51A) and (51B), respectively.

  In this embodiment, the forward switch operation projection (33c) and the backward switch operation projection (33d) are formed by fixing the bending member to the switch operation wall (33b) with a screw (30). However, the protrusions may be formed integrally with the switch operation wall (33b).

  Further, on the left side surface of the head portion (33a) of the slide member (33), a rear portion of the plate-like bearing member (35) is fixed with a bolt (36), and on the front portion of the bearing member (35), A circular hole (35a) is formed, and a flange unit (37) is attached to the circular hole (35a), and the flange unit (37) supports the left end side portion of the central shaft (10) of the support shaft (9). The structure in this portion is the same as that of the right end portion of the central axis (10). Further, a substantially inverted L-shaped switch bracket (38) is fixed to the left side surface of the bearing member (35) with a screw (39) as viewed from above, and the left side surface of the switch bracket (38) is for left turn. A photoswitch (41) is attached. The left turn switch operating projection (13A) at the left end of the central shaft (10) is allowed to enter the light shielding area of the left turn photo switch (41) via the coil spring (19).

  Next, the operation procedure of the drive type allocation vehicle (1) according to the present embodiment will be described. First, as shown in FIG. 6, when the operation handle (2) is tilted forward, the support shaft portion (9 ), The start switch operating lever (7) pivots upward and pushes up the operating part (27a) of the start limit switch (27). As a result, the limit switch (27) is turned ON and the power is turned on. .

  As shown in FIGS. 7 and 8, when the user of the layout vehicle (1) pulls the left side of the operation handle (2) forward without sliding the operation handle (2) in the left-right direction, The bearing member (35) supporting the left end side of the support shaft (9) of the operation handle (2) moves forward and the slide member (33) attached to the bearing member (35) moves in the same manner. As a result of the forward switch operating projection (33c) on the front surface of the switch operating wall (33b) of the slide member (33) entering the light shielding area (F) of the forward photoswitch (32A), the photoswitch ( As a result, the motor (4A) (4B) rotates forward at the same speed and the left and right drive wheels (20A) (20B) rotate forward. To do.

  As shown in FIGS. 9 and 10, when the user of the layout vehicle (1) pushes the left side of the operation handle (2) backward without sliding the operation handle (2) in the left-right direction, The bearing member (35) supporting the left end side of the support shaft (9) of the operation handle (2) moves rearward, and the slide member (33) attached to the bearing member (35) moves in the same manner. As a result of the reverse switch operating protrusion (33d) on the rear surface of the switch operating wall (33b) of the slide member (33) entering the light shielding area of the reverse photo switch (32B), the photo switch (32B) As a result, the left and right motors (4A) and (4B) reversely rotate at the same speed, and the left and right drive wheels (4A) and (4B) move in the same manner, so that the arrangement vehicle (1) moves backward.

  As shown in FIGS. 11 and 12, when the user of the trolley (1) slides the operation handle (2) to the left and pulls the left side of the operation handle (2) forward, the operation handle ( The bearing member (35) supporting the left end side of the support shaft (9) of 2) moves forward, and the slide member (33) attached to the bearing member (35) moves in the same manner. As a result of the forward switch operating projection (33c) on the front surface of the switch operating wall (33b) of the member (33) entering the light shielding area (F) of the forward photoswitch (32A), the photoswitch (32A) As the motor (4A) (4B) rotates along with this, the left and right drive wheels (4A) (4B) rotate forward, and the ration wheel (1) moves forward. As the operating handle (2) is slid to the left, the left turn switch operation at the left end of the central axis (10) in the support shaft (9) of the operating handle (2) As a result of the part (13A) entering the light shielding area of the left turn photo switch (41), the left motor (4A) of the left and right motors (4A) (4B) rotates slower than the right motor (4B). As a result, the arrangement vehicle (1) turns to the left.

  As shown in FIG. 13, FIG. 14 and FIG. 15, when the user of the layout vehicle (1) slides the operation handle (2) to the right and pulls the left side of the operation handle (2) forward, The bearing member (35) supporting the left end side of the support shaft (9) of the operation handle (2) moves forward and the slide member (33) attached to the bearing member (35) moves in the same manner. The forward photoswitch operation protrusion (33c) on the front surface of the switch operation wall (33b) of the slide member (33) enters the light shielding area (F) of the forward photoswitch (32A). When the switch (32A) is turned on, the motors (4A) (4B) are rotated in the forward direction, and the left and right drive wheels (4A) (4B) are also rotated in the same direction, so that the distribution vehicle (1) moves forward. However, at this time, as described above, as the operation handle (2) is slid to the right, the central axis (10 ) As a result of the right-hand turning switch operating protrusion (13B) entering the shading area (F) of the right-turning photo switch (23), the right motor (4A) (4B) of the right and left motors (4A) (4B) The rotation of 4B) is slower than the rotation of the left motor (4A), and the arrangement vehicle (1) turns to the right.

  As shown in FIGS. 16 and 17, when the user of the trolley (1) slides the operating handle (2) to the left and pushes the left side of the operating handle (2) backward, The bearing member (35) supporting the left end side of the spindle (9) of the handle (2) moves rearward and the slide member (33) attached to the bearing member (35) moves in the same manner. As a result of the reverse switch operation protrusion (33d) on the rear surface of the switch operation wall (33b) of the slide member (33) entering the light shielding area of the reverse photo switch (32B), the reverse photo switch (32B) As a result, the motors (4A) and (4B) rotate in reverse and the left and right drive wheels (4A) and (4B) rotate in the same way. At this time, as described above, as the operation handle (2) is slid leftward, the spindle (9) of the operation handle (2) As a result of the left turn switch operating projection (13A) at the left end of the central shaft (10) entering the light shielding area of the left turn photo switch (41), the left motor (4A) of the left and right motors (4A) (4B) ) Is slower than the rotation of the right motor (4B), and the arrangement vehicle (1) turns to the left (turns to the right in the direction of travel).

  As shown in FIGS. 18 to 20, when the user of the trolley (1) slides the operation handle (2) to the right and pushes the left side of the operation handle (2) backward, The bearing member (35) supporting the left end side of the spindle (9) of the handle (2) moves rearward and the slide member (33) attached to the bearing member (35) moves in the same manner. As a result of the reverse switch operation protrusion (33d) on the rear surface of the slide member (33) entering the light shielding area of the reverse photo switch (32B), the reverse photo switch (32B) is turned on, and the motor ( 4A) and (4B) rotate in the reverse direction, and the left and right drive wheels (4A) and (4B) rotate in the same way, and the ration wheel (1) moves backward, but at this time, as described above, the operation handle (2 ) Is slid rightward, the right turn switch operation protrusion (13B) on the right end of the central axis (10) of the support shaft (9) of the operation handle (2) ) Enters the light-shielding area of the right turn photo switch (23), and as a result, of the left and right motors (4A) (4B), the right motor (4B) rotates slower than the left motor (4A). The arrangement vehicle (1) turns to the right (turns to the left in the direction of travel).

  In the operation of the arrangement vehicle (1) described above, when the operating handle (2) is pushed left or right to slide the handle (2) and then the force is released, the support shaft (9 ) The operating handle (2) returns to its original state by the force of the coil spring (19) at both ends. Further, even when the left side of the operation handle (2) is moved in the front-rear direction, it is arranged in front of and behind the switch operation wall (33b) of the slide member (33) by loosening the force on the handle (2). The slide member (33) is returned to the original position by the coil springs (51A) and (51B).

  As shown in FIG. 6, in the case where the arrangement vehicle (1) as described above is not operated, if the operation handle (2) is released, the handle (2) is again raised by a spring (not shown). Therefore, as a result of the switch operating lever (7) in the push pipe (12) of the support shaft (9) being lowered and the operating part (27a) of the starting limit switch (27) being lowered, the starting limit switch (27) turns off and the power turns off.

  FIG. 21 is an electrical wiring diagram of the layout vehicle according to the present embodiment. The outline thereof will be described. (59) is an operation panel of the layout vehicle (1), (32A) is a forward photoswitch, and (32B) is a backward operation. Photo switch, (23) is a photo switch for turning right, (41) is a photo switch for turning left, (27) is a limit switch (stop switch), (47) is a sequence control circuit, (48A) is a left motor control (48B) is a right motor control circuit, (4A) is a left motor, (4B) is a right motor, (51A) is a left motor brake, and (51B) is a left motor brake.

  The operation panel (59) includes a key switch or the like serving as a main switch. The sequence control circuit (47) has an input terminal block (47a), an output terminal block (47b), and an analog output terminal block (47c).

  FIG. 22 is a modification example of the drive control shown in FIG. 3, and the clutches (52A) (52B) in the left and right drive wheels (20A) (20B) corresponding to the sliding state of the operation handle (2) in the left-right direction. ) And the left and right drive wheels (20A) and (20B) are idled to turn the arrangement vehicle (1) left or right.

FIG. 23 shows another example of drive control. In this case, when the wheeled vehicle (1) travels, for example, when the drive wheels are idle due to road surface unevenness, the encoders (53A) (53B) ), Feedback control to the motor control circuit is performed, and rotation of the drive wheel is temporarily suppressed.
Note that the left turn and the right turn of the layout vehicle (1) may be performed by rotating the left and right drive wheels in reverse directions in addition to the method described above.

  The transporting vehicle according to the present invention can be widely used as a cart for carrying various items such as luggage, in addition to a distribution vehicle.

It is a perspective view which shows the outline | summary of the layout vehicle which concerns on embodiment. It is a top view of a similarly arranged car. It is a block diagram which shows an example of the control processing in a layout vehicle. It is sectional drawing which shows the attachment structure of the operation handle in a layout vehicle. It is a top view of the operation handle part similarly. It is a side view which shows the interlocking state of rotation of an operation handle, and a limit switch. It is a top view which shows the state of the operation handle when a layout vehicle moves forward (straightly). It is the enlarged plan view of the left side part of the operation handle in the case of advancing similarly. It is a top view which shows the state of the operation handle when a layout vehicle moves backward. It is the enlarged plan view of the left side part of the operation handle in the case of a retreat similarly. It is a top view which shows the state of the operation handle when a layout vehicle turns forward left. FIG. 6 is an enlarged plan view of the left side portion of the operation handle in the case of forward turning in the same manner. It is a top view which shows the state of the operation handle when a layout vehicle turns forward right. It is the enlarged plan view of the left side part of the operation handle in the case of forward forward turn similarly. FIG. 6 is an enlarged plan view of the right side portion of the operation handle in the case of forward turning in the same manner. It is a top view which shows the state of the operating handle in case a layout vehicle turns back left. FIG. 6 is an enlarged plan view of the left side portion of the operation handle in the case of reverse left turn. It is a top view which shows the state of the operation handle when a layout vehicle turns back and turns right. FIG. 6 is an enlarged plan view of the left side portion of the operation handle in the case of reverse backward turning. FIG. 6 is an enlarged plan view of the right side portion of the operation handle in the case of reverse backward turning. It is an example of the electrical wiring diagram of a layout vehicle. It is a block diagram which shows the other example of the control processing in a layout vehicle. It is a block diagram which shows the further another example of the control processing in a layout vehicle.

Explanation of symbols

(1) Serving car
(2) Operation handle
(4A) (4B) Left and right motor
(9) Support shaft
(10) Center axis
(13A) (13B) Left / right turn switch operation protrusion
(14) Right base member
(19) Spindle coil spring
(23) Photo switch for turning right
(27) Start limit switch
(28) Left base member
(31A) (31B) Guide bar
(32A) Advance photo switch
(32B) Reverse photo switch
(33) Slide member
(35) Bearing member
(41) Left turn photo switch

Claims (4)

  An operation handle for driving, a plurality of switches mechanically switched by movement of the operation handle, a drive control unit for performing predetermined drive control processing based on an input state of these switches, and an output from the drive control unit A drive vehicle having a drive source that operates based on a signal and a pair of left and right drive wheels that are individually rotated by the drive source.   All or part of the operation handle moves back and forth, left and right, and the switch consists of a forward switch, reverse switch, left turn switch, and right turn switch. Switch or reverse switch is turned on, or right turn switch or left turn switch is turned on, and the left and right drive wheels are rotated forward or backward by processing in the drive control unit based on the input state of these switches. Rotating forward or backward, or further turning left or right by making a difference in rotational speed of the left and right drive wheels or by reversing the direction of rotation. Item 4. The drive-type transport vehicle according to Item 1.   The forward switch, the reverse switch, the left turn switch, and the right turn switch are all photo switches, and a base member that supports both ends of the support shaft portion of the operation handle is attached to the front surface of the transport vehicle body. One end portion of the support shaft portion is inserted into the circular hole of the base member, the other end portion of the support shaft portion is inserted into the circular hole of the bearing member, and the other base member has one or more extending in front thereof. A guide bar is attached, and the guide bar is inserted through a slide member attached to the bearing member. A forward switch operation projection is provided on the front surface of the slide member, and a reverse switch operation projection is provided on the rear surface. A left-turn switch operating projection at the left end of the support shaft, and a right-turn switch operation projection at the right end of the support shaft, respectively. A switch for turning left is attached to either one, a switch for turning right is attached to the other, and a left-turn switch operating projection or a right-turn switch as the spindle slides in the left-right direction When the operation protrusion enters the light shielding area of the corresponding switch, the left turn or the right turn is performed, and the forward switch and the backward switch operation protrusion are behind the forward switch operation protrusion of the slide member. Each has a reverse switch, and the slide member slides back and forth as the support shaft moves in the front-rear direction, so that the forward switch operating protrusion or the reverse switch operating protrusion corresponds to the light shielding area of the switch. The driven vehicle according to claim 2, wherein the vehicle is moved forward and backward.   A switch operating lever is provided on the support shaft of the operation handle, and an activation switch that contacts the switch operating lever is attached to the front side of the transport vehicle body. The drive vehicle according to claim 3, wherein the start switch is turned on and off by.

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