JPH0630580Y2 - Braking equipment for transport vehicles - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a braking device for a transport vehicle that transports luggage and commercial materials in indoor and outdoor facilities.

[Conventional technology]

As is well known, a transport vehicle that transports luggage and materials in a private land such as a golf course or other indoor and outdoor facilities has a cargo bed on its body and can be driven by a prime mover. The use of such vehicles is limited to private land and facilities, operates at relatively low speeds, and is not subject to the regulations of relevant laws and regulations. Can be freely designed. Therefore, with a transport vehicle having a step at the rear of the vehicle body, the driver can perform a boarding drive while standing or a walking drive while walking from behind the transport vehicle.

[Problems to be solved by the device]

However, the conventional braking device mounted on a carrier vehicle capable of boarding and walking is designed so that a driver in a standing state accidentally drops or gets off, or a driver in a walking state accidentally steers. Since the vehicle is not automatically braked when the steering wheel is released, there is a problem that a carrier without a driver may run out of control.

[Means for Solving the Problems]

This invention was made in view of the above circumstances,
The means to be used is a braking device attached to a transport vehicle that can be used for both riding and walking, and the lower part of the brake body is pivotally supported on the vehicle body so that it can be tilted to the rear of the transport vehicle. And a steering handle which has a return spring and returns from an inclined state to an upright state, and a steering handle attached to the lower part of the steering handle for instructing braking when the steering handle is upright and instructing anti-braking when inclining. A return brake, a foot pedal capable of converting a braking command of the return brake into an anti-braking command during riding operation, and a transmission mechanism for transmitting a braking or anti-braking command of the foot pedal and the return brake to the brake body. There is something I did.

[Action]

According to the above-mentioned means, the brake or anti-braking command is transmitted from the return brake and the foot pedal to the brake main body via the transmission mechanism, and the carrier vehicle is braked or anti-braked in each case.

When the transport vehicle is on board, the steering handle is in an upright state by the return spring, and the return brake constantly commands braking in this state. In this case, unless the foot pedal operates, the braking command is transmitted to the brake main body through the transmission mechanism without being converted into the anti-braking command, and the transport vehicle is braked. When the foot pedal operates to convert the braking command for the return brake into the anti-braking command, the anti-braking command is transmitted to the brake body via the transmission mechanism, and the braking of the transport vehicle is released.

Next, when the transport vehicle is driven to walk, the steering handle is steered while tilted rearward. In this case, the return brake always commands anti-braking, and since the foot pedal cannot operate during walking operation, the anti-braking command by the return brake causes the brake main body to perform anti-braking operation via the transmission mechanism, and the transport vehicle The braking of is released. Furthermore, when the steering handle during walking operation is interrupted for some reason and returned to the upright state by the return spring, the state becomes the same as the state in which the foot pedal does not operate during the boarding operation described above and the transportation vehicle. Is braked.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

First, the schematic configuration of the braking device will be described with reference to FIGS. 1 and 2.

The braking device 1 is mounted on a carrier 2 having a loading platform 4 mounted on the front part of the vehicle body 3 and having a step 5 on the rear part thereof so that both the riding operation and the walking operation can be performed. An upright state in which a brake main body 6 is attached and to which a braking or anti-braking command is transmitted, and a lower portion thereof is pivotally supported by the vehicle body 3 so as to be able to lean to the rear of the vehicle body 3 during walking operation and has a return spring 18. Steering handle 19 to hold
And a return brake 20 attached to the lower portion of the steering handle 19 to instruct the braking by loosening the wire 28a when the steering handle 19 is upright, and pulling the wire 28a when inclining to instruct anti-braking. A foot pedal 21 capable of converting a braking command of the return brake 20 into an anti-braking command, and a transmission mechanism 1a for transmitting the braking or anti-braking command of the foot pedal 21 and the return brake 20 to the brake body 6 are provided. is there.

Further, in addition to the above-described configuration, the transport vehicle 2 is provided with a grip brake 17 that is attached to the steering handle 19 and can brake the brake body 6 at any time.

As shown in FIGS. 2 to 4, the brake main body 6 is equipped in a part of the transmission 22 of the transport vehicle 2 and has a brake lever 7 to which a braking command or an anti-braking command is transmitted. The brake lever 7 has its base end portion pivotally supported by the brake main body 6 by the pin 23, and is brought into a braking state and an anti-braking state depending on the X or X'direction of the swinging motion of the tip portion thereof.

The transmission mechanism 1a includes a first spring 8 that biases the brake lever 7 of the brake body 6 in the anti-braking X'direction via the rod body 8a,
A brake pull rod 10 mounted so as to pull the brake lever 7 in the braking X direction and having an elongated hole 9 of a predetermined size formed in its length direction, and the brake pull rod 10 sliding in the elongated hole 9 First arm connected via possible pin 11
It has a second arm 14 having a second spring 13 and biased in the braking X direction by a second spring 13, and a rotatable cylinder member 16 having a pivot 15 supported by the vehicle body 3.

The first spring 8 of the transmission mechanism 1a has one end locked to the locking hole 24 formed at the tip of the brake lever 7 via the rod 8a and the other end locked to the vehicle body 3. 3, the brake lever 7 is always urged in the anti-braking X'direction. The brake pull rod 10 is attached to the locking hole 24 of the brake lever 7 via a tension spring 25 having a relatively large spring constant, and pulls the brake lever 7 in the braking X direction by a wire 28 connecting to the grip brake 17. It is possible. The long hole 9 formed in the longitudinal direction of the brake pull rod 10 slidably holds the pin 11 of the first arm 12 fixedly mounted on the cylindrical portion 16a of the outer peripheral portion of the rotary cylindrical member 16. . The elongated hole 9 has a predetermined length d, and the grip brake 17
The operation of is always possible. As shown in FIGS. 2 to 4, the rotary tubular member 16 includes a pivot 15 held by the vehicle body 3 via a bracket 26, a tubular portion 16a rotatably mounted around the pivot 15, and From the first arm 12 fixed to the outer peripheral surface of the cylindrical portion 16a, and the second arm 14 similarly fixed to the outer peripheral surface and having two second springs 13 attached thereto via a connecting rod 27. Become.

As shown in FIGS. 1 and 4, the foot pedal 21 has its base end portion fixed to the tubular portion 16a, and when the tread surface 21a is not stepped on by the driver, the second arm 14 is interposed. The second spring 13 is rotationally urged to project upward from step 5. Driver steps 5 and tread 21
a If you step on the bicycle and drive, the foot pedal 21
Becomes the state shown by the chain line in FIG. 4, and the cylindrical portion 16a is rotated in the anti-braking X'direction against the elastic force of the second spring 13,
The arm 12 tilts to the state shown by the chain line in FIG. 3 so that the pin 11 moves in the anti-braking X'direction of the slot 9 and the brake lever 7 operates in the anti-braking X'direction by the first spring. Thus, the braking of the brake body 6 is released.

The grip brake 17 has a steering handle 19 as shown in FIG.
It is operated by the gripping lever 17a attached to the gripping portion 19a of the brake pulling bar 10 to pull the pulling force through the wire 28.
It is transmitted to the end portion of the braking X direction side.

As shown in FIGS. 1 and 5, the steering handlebar 19 has a handlebar 19b and is erected at the center of the vehicle body 3, and its lower portion is pivotally supported by a casing 30 via a horizontal shaft 29. Thus, the vehicle body 3 can be tilted rearward. This casing 30
Rotates with the column 31 with respect to the vehicle body 3 when the steering handle 19 is operated for steering. Also, handle rod 19b
A bracket 32 is provided so as to project laterally from the lower portion thereof, and a support rod 33 parallel to the horizontal shaft 29 is fixed to the bracket 32.
Further, one end of an L-shaped arm 34 is fixed to the outer peripheral surface of the support rod 33, and the other end of the L-shaped arm 34 and the casing 30 are fixed.
A return spring 18 is connected to the base plate 35. Further, when the steering handlebar 19 is upright, the support rod 33 abuts on a stopper 36 composed of a bolt nut mounted on the base plate 35 so that the height of the steering handlebar 19 can be adjusted, so that the steering handlebar 19 is tilted forward of the vehicle body 3. It is properly regulated.

The return brake 20 includes the support rod 33 attached to the lower portion of the steering handle 19, a swing rod 38 whose base end is pivotally supported by the casing 30 by a pin 37 and swings in the vertical direction, and the swing rod 38. The swing rod 38 is located above the support rod 33, and the support rod 33 intersects between the pin 37 and the bracket 39. It is arranged to.

Therefore, when the steering handle 19 is in the upright state, the swinging rod 38 is pressed against the support rod 33 by the elastic force of the second spring 13 connected to the wire 28a, and as shown by the solid line in FIG. The pin 37 is a downward sloping state on the bracket 39 side as a fulcrum.

Then, when the steering handle 19 is rotated about the horizontal axis 29 and tilted as shown by the chain line in FIG. 5, the support rod 33 also rotates about the horizontal axis 29, so that the swing rod 38 moves. A force that pushes upward from the support rod 33 acts on the pin 37 as a fulcrum, and as a result, as shown by the chain line, the bracket 39 side is inclined upward, and the wire 28 is moved by the distance that the bracket 39 has moved upward.
a is pulled against the elastic force of the second spring 13 in the X'direction shown in FIG.
When a is rotated and the first arm 12 is rotated around the pivot 15 as shown by the chain line in FIG. 3, the brake lever 7 is pulled in the anti-braking direction by the first spring 8 and the carrier 2
The braking of is released.

At this time, the foot pedal 21 also rotates around the pivot 15 along with the rotation of the tubular portion 16 around the pivot 15, and the tread surface 21a moves downward as shown by the chain line in FIG. Therefore, the brake rod 10 of the transmission mechanism 1a is not projected.
Is in a state where restrictions other than the grip brake 17 have been released.

The horizontal shaft 29 is rotated by the inclination of the steering handle 19 to the rear of the vehicle body 3, and a lock member 40 is attached to the casing 30 to stop this rotation in the upright state of the steering handle 19. . As shown in FIG. 6, this locking member 40 is provided with a tubular body 41 fixed to the casing 30 and a lid portion 43 that is provided so as to be screwed inside the tubular body 41 and has a through hole 42 in the center thereof. And fixing pin 44 that penetrates through hole 42
And a compression spring 45 for urging the fixing pin 44 in the direction of the horizontal axis 29.
And a cam 47 for rotatably supporting the end of the fixing pin 44 on the casing 30 side. Further, a fitting hole 48 having a size into which the head 44a of the fixing pin 44 can be fitted is formed at a required position of the horizontal shaft 29, and the cam 47 is connected to the lever 46.
When the steering handle 19 is returned to the upright state in the upright state, the head 44a of the fixing pin 44 is fitted into the fitting hole 48 by the elastic force of the compression spring 45, and the horizontal shaft 29 cannot rotate.

Next, the operation of the above embodiment will be described.

When the transport vehicle 2 is boarded, the steering handlebar 19 is upright and the foot pedal 21 is depressed. In this case, the wire 28a is pulled so that the return brake 20 cannot operate, and the carrier 2 can travel unless the gripping brake 17 is braked. When the driver falls or gets off the vehicle, the foot pedal 21 rises from step 5, and the steering handlebar 19 stands upright and is locked by the lock member 40. In this case, return brake
The wire 28a is loosened by 20 and the urging force of the second spring 13 is exerted, and the transport vehicle 2 is braked.

When the transport vehicle 2 is walking, the steering handlebar 19 is tilted rearward of the vehicle body 3 for steering. At this time, since the return brake 20 does not operate, the carrier 2 can be braked only by the gripping brake 17. When the driver releases the grip portion 19a for some reason, the steering handle 19 is returned to the upright state by the return spring 18, and the cam 47 of the lock member 40 is operated upright by operating the lever 46. If it is, the steering handlebar 19 is locked in the upright state, the return brake 20 is reliably operated, and the transport vehicle 2 is braked.

[Effect of device]

As is clear from the above description, according to the brake system for a transport vehicle of the present invention, when a driver in a standing state accidentally drops or gets off, the foot pedal is returned and walking If the driver in the state accidentally releases the tilted steering wheel, the steering wheel returns to the upright state, causing the brake body to perform a braking operation. Has the advantage of not running out of control.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention, FIG. 1 is a partially cutaway perspective view of a transport vehicle, FIG. 2 is a plan view showing a main portion of a braking device, and FIG. Fig. 2 is a vertical sectional view taken along the line III-III, Fig. 4 is a schematic side view of Fig. 2, Fig. 5 is an enlarged side view showing a lower portion of the steering handle by cutting out, and Fig. 6 is an enlarged view showing a lock lever. Side sectional view. 1 ... Braking device, 1a ... Transmission mechanism, 2 ... Transport vehicle, 3 ... Car body, 6 ... Brake body, 18 ... Return spring, 19 ... Steering handle, 20 ... Return brake, 21 ...... Foot pedal.

Claims (1)

[Scope of utility model registration request] 1. A braking device mounted on a transport vehicle, which can be used for both riding and walking, and comprises a brake body,
A steering handle whose lower portion is pivotally supported by the vehicle body so as to be able to tilt rearward of the transport vehicle and which has a return spring and which returns from a tilted state to an upright state, and a steering handle attached to the lower portion of the steering handle. A return brake that commands braking when the steering handle is upright and commands anti-braking when tilting, a foot pedal that can convert the braking command of the return brake into an anti-braking command when riding, and the foot pedal and the return brake. And a braking mechanism for transmitting an anti-braking command to the brake body.