JPH0737129Y2 - Bumper device for transport vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a bumper device for a guided vehicle such as an automated guided vehicle.

[Conventional technology]

A conventional bumper device mounted on an automatic guided vehicle will be described.

As shown in FIG. 3, the automated guided vehicle 1 is provided with a carrier vehicle 2, and bumpers 3 are provided at front and rear ends of the carrier vehicle 2.

Each of these bumpers 3 is formed by embedding a cord switch 5 in a bumper body 4 made of an elastic body. The cord switch 5 is a cord-shaped switch in which a conductive substance is provided between conductors so that the conductors are brought into conduction by an external force. The cord switch 5 is arranged in a straight line in the left-right direction as shown in FIG.

[Problems to be solved by the device]

Since the cord switches 5 are provided in a straight line as described above, the obstacles 6 are provided on the bumper body 4 from the oblique lateral direction, such as during spin turn running shown by the dotted line in FIG.
In the case of hitting, the cord switch 5 does not exert a force from the right angle direction, and therefore the reliability of the operation detection is low for the obstacle detection.

The present invention has been made in view of the above circumstances, and its purpose is to provide a highly reliable ON / OFF operation of the cord switch even when an obstacle hits the bumper from an oblique lateral direction. It is an object of the present invention to provide a bumper device for a carrier vehicle capable of detecting an obstacle from any direction.

[Means for Solving the Problems]

At the front and rear of the carrier 11, the left side 12a and the diagonal step 12e
And a middle portion 12c protruding from the left side portion 12a, a slanted step portion 12d and a right side portion 12b to form a bumper mounting portion 12 having a substantially convex planar shape, respectively, the left side portion 12a, the left side contacting the right side portion 12b A bumper made of an elastic body having a substantially U-shaped planar shape having a mounting surface 13, a right mounting surface 13, a step mounting surface 16 contacting each step 12e, 12d, and an intermediate mounting surface 18 contacting the intermediate part 12c. Bumper from the main body 16 and the cord switch 17 embedded in the bumper main body 16
14, the bumper body 16 and the bumper mounting portion 12
The cord switch 17 is attached to the left and right line portions 19 parallel to the left and right mounting surfaces 13 and the vertical force receiving portion 20 parallel to each step mounting surface 16.
And a bumper device for a carrier whose plane shape is substantially U-shaped by an intermediate line portion 21 parallel to the intermediate mounting surface 18.

[Action]

If the bumper 14 is hit by an obstacle from an obliquely lateral direction, such as during spin turns, a cord switch is applied to this obstacle.
The vertical force receiving portion 20 of 17 receives a force from the vertical direction, and the cord switch 17 is turned on and off.

Further, the bumper mounting portion 12 of the carrier 10 has a substantially convex planar shape, and the bumper body 16 has a substantially U-shaped planar shape. It does not come off, and the bumper body 16 can reduce the impact force when it hits an obstacle.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

The transport vehicle 10 is provided with a transport carriage 11, and bumper mounting portions 12 are formed at front and rear ends of the transport carriage 11, and the left and right portions 12a and 12b of these bumper mounting portions 12 are intermediate portions. 12c is closer to the center of the carriage 11 than the left and right sides 12a,
Steps 12d and 12e between 12b and the intermediate portion 12c are formed as slopes.

Bumpers 14 are attached to the front and rear bumper attaching portions 12. Each of these bumpers 14 has a cord switch 17 embedded in a bumper body 16 made of an elastic material such as rubber.

The left and right sides of the bumper body 16 are the bumper mounting portion 12
Left and right side mounting surfaces 13 and step mounting surfaces 16 for mounting on the left and right side portions 12a, 12b and the step portions 12d, 12e are formed,
Further, an intermediate mounting surface 18 is formed at an intermediate portion of the bumper body 16, and the left and right mounting surfaces 13, the step mounting surface 16 and the intermediate mounting surface 18 have a shape matching the bumper mounting portion 12. There is.

The cord switch 17 is a vertical force receiving portion parallel to the left and right line portions 19 and the step attachment surface 16 parallel to the left and right attachment surfaces 13.
20 and an intermediate line portion 21 parallel to the intermediate mounting surface 18 are connected.

Therefore, as shown by the dotted line in FIG. 2, when the bumper 14 is hit by the obstacle 22 from the oblique lateral direction during spin-turn travel, the vertical force receiving portion 20 of the cord switch 17 is perpendicular to the obstacle 22. Received power from the cord switch 17,
OFF Operates. Therefore, obstacles can be detected from all directions.

[Effect of device]

If the bumper 14 is hit by an obstacle from an obliquely lateral direction, such as during spin turns, a cord switch is applied to this obstacle.
Since the vertical force receiving portion 20 of 17 receives the force from the vertical direction, the cord switch 17 has high reliability in ON and OFF operations. Therefore, obstacles can be detected from all directions.

Further, the bumper mounting portion 12 of the carrier vehicle 11 has a substantially convex planar shape, and the bumper body 16 has a substantially U-shaped planar shape, so that the bumper body 16 is firmly mounted to the bumper mounting portion 12. Even if an obstacle hits from the oblique direction, it does not come off, and the bumper body 16 is made of an elastic body, and the cord switch 17 is embedded therein,
The bumper body 16 can reduce the impact force when it hits an obstacle, and the cord switch 17 becomes difficult to check.

[Brief description of drawings]

FIG. 1 is a side view of a vehicle equipped with a bumper device according to the present invention, FIG. 2 is a plan view showing a section of the same portion, and FIG. 3 is a partial sectional plan view of a vehicle carrying a conventional bumper device. Is. 11 is a carrier truck, 14 is a bumper, 17 is a cord switch, 20
Is the vertical force receiving part.

Claims (1)

[Scope of utility model registration request] 1. A front surface and a rear portion of a carrier truck 11 have a left-side portion 12a, a slanted step portion 12e, an intermediate portion 12c projecting from the left-side portion 12a, a slanted step portion 12d, and a right-side portion 12b. Forming a bumper mounting portion 12 in the shape of a left side, a left side mounting surface 13 in contact with the left side portion 12a and the right side portion 12b, a right side mounting surface 13 and a step portion mounting surface 16 in contact with each step portion 12e, 12d and an intermediate portion 12c. A bumper body 16 made of an elastic body having a substantially U-shaped planar shape and having an intermediate mounting surface 18 in contact with the bumper body 16 and a cord switch 17 embedded in the bumper body 16.
14, the bumper body 16 and the bumper mounting portion 12
The cord switch 17 is attached to the left and right line portions 19 parallel to the left and right mounting surfaces 13 and the vertical force receiving portion 20 parallel to each step mounting surface 16.
And a bumper device for a carrier whose plane shape is substantially U-shaped by an intermediate line portion 21 parallel to the intermediate mounting surface 18.