JP2501389Y2 - Top opener for lorries - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hood opening / closing device for a lorry, and more particularly to a hood opening / closing device of the type in which opening and closing of the hood is performed by power.

[0002]

2. Description of the Related Art As an opening / closing device for this kind of hood, it has a wire rope to be hung on pulleys arranged in front of and behind a tilt, and a winding drum for winding the wire rope. There is known a type in which a rope is moved and the hood is opened and closed via a hood bone connected to a wire rope.

[0003]

In the hood opening / closing device of the type described above using the wire rope, the wire rope is unavoidably stretched due to the tension during winding, and gradually loosens with use. The smooth opening and closing of the hood may be impaired, and the wire rope may come off the pulley.

In order to solve this problem, an attempt has been made to absorb the extension of the wire rope by supporting the pulley so as to be movable for a certain section and biasing it in one direction by a spring.
The amount of absorption by the spring is limited, and if a strong spring is used, the tension of the wire rope at the beginning of use will increase and a large amount of power will be required for winding, and conversely if a weak spring is used. Absorption becomes smaller.

An object of the present invention is to provide a hood opening / closing device capable of moderately tensioning the wire rope even when the wire rope extends.

[0006]

A hood opening / closing device of the present invention is a cargo in which a hood bone movably supported on a rail laid in the longitudinal direction of a tilt is extendably connected by a link and a hood is covered on the hood bone. In a hood device for an automobile, a pair of pulleys that are axially attached to the front and rear of a tilt, a drive device that rotationally drives one of the pair of pulleys, and a hood bone that is supported along a rail so as to be able to advance and retract in one direction And a pair of movable pulleys connected to each other, and a wire rope that is hung on the pair of pulleys from the outside and then hung on the pair of movable pulleys from the inside, and one end of which is connected to the machine frame, and a winding that is connected to the wire rope. The wire rope end is connected to the winder at each end, or only one end is connected to the winder and the other end is fixed to the machine frame or is attached to the machine frame by a spring. Are connected via.

[0007]

[Operation] Since each end of the wire rope is fixed,
When the pulley is driven to rotate in one direction by the driving device, the wire rope on the retracting side is retracted while pulling the moving pulley in one direction, and at the same time, the amount required for the movement of the moving pulley is fed out to the moving pulley. The hood bone to be connected is moved in one direction together with the moving pulley.

When the pulley is driven to rotate in the opposite direction, the moving pulley and the top bone move in the opposite direction. If the wire rope becomes loose due to use, the looseness of the wire rope is taken up by the winder. The winding machine can be driven manually by rotating the handle, or can be driven by a motor. The winding machine may be fixedly operated when wound so that the wound wire rope is not unwound, but preferably a ratchet mechanism, a unidirectional rotation clutch or other hacking mechanism is provided. It is desirable not to rotate in the rewinding direction.

When one end of the wire rope is connected to the machine frame via a spring, this allows some extension of the wire rope to be absorbed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a hood device for a freight vehicle, in which a runner (not shown) provided at a leg end of a rail 2 laid along a tilt 1 is engaged with the rail so that the rail can travel. Further, it is composed of an inverted U-shaped hood bone 3, a link mechanism 4 connecting the hood bones 3 in a stretchable manner, and a hood 5 placed on the hood bone.

FIG. 2 shows an opening / closing device of the above-mentioned hood device. A pair of pulleys 6 axially mounted in front of and behind the tilt 1 are shown in FIG.
a, 6b and a pedestal 7 to which the hood bone 3 of the tail is attached,
A pair of moving pulleys 8 rotatably supported by guide rails (not shown) that are integral with the rails 2, and pulleys 6a, 6a.
It is hung from the outside on b and from the inside on the moving pulley 8, and one end is connected to the tensioner 11 attached to the machine frame via the guide pulley 9, while the other end is wound via the guide pulley 12 It is composed of a wire rope 14 connected to the machine 13, and a rotation driving device 18 of a pulley 6a including a motor 15, a speed reducer 16 and a chain transmission device 17. When the motor 15 is rotationally driven in the forward or reverse direction, The hood bone 3 at the rear moves forward and backward together with 7, and the hood opens and closes.

The tensioner 11, as shown in FIG.
A bearing 22 fixed to the machine frame 21 is slidably supported by a bearing 22.
The rod 23 having the wire rope 14 connected to the protruding end from the machine frame 21, the nut 24 screwed to the rod end, and the bearing 2
2 and a coil spring 25 that is wound around the rod 23 and biases the rod 23 to the right in FIG.
It is composed of 6 and can absorb some looseness of the wire rope 14.

When the tensioner 11 cannot absorb the slack, a handle (not shown) is attached to the winder 13, and the handle is rotated to wind the wire rope 14 by the winder 13 to absorb the slack. Although this winder is not shown in the drawings, it can be rotated only in one direction by the ratchet, that is, in the direction in which the wire rope 14 is wound, and is not rotated in the direction in which the wire rope 14 is unwound. The wire rope does not loosen due to rewinding.

[0014]

The present invention is constructed as described above and has the following effects. According to the hood opening / closing device of claim 1, when the wire rope is slackened due to stretching, the slack can be wound up by the winder to absorb the slack, and the tension of the wire rope can be moderated. You can

When the one end of the wire rope is connected to the machine frame via the spring as in the apparatus according to the second aspect, it is possible to absorb some slack in the wire rope. Claim 3
By connecting both ends of the wire rope to the winder as in the described device, the slack of the wire rope can be absorbed from either side. When the winding machine is provided with the chopping feed mechanism as in the apparatus according to claim 4, the fixing operation becomes unnecessary only by operating the winding machine in the winding direction, and the wire rope is unwound and loosened. There is no.

[Brief description of drawings]

FIG. 1 is a side view of a hood device mounted on a truck.

FIG. 2 is a schematic view of a hood opening / closing device.

FIG. 3 is a sectional view of a tensioner.

[Explanation of symbols]

6a, 6b ... Pulley 7 ...
Platform 8: Moving pulley 11 ...
・ Tensioner 13 ・ ・ ・ Winding machine 14 ・ ・
・ Wire rope 15 ・ ・ ・ Motor

Claims (4)

(57) [Scope of utility model registration request] 1. A hood device for a freight vehicle in which a hood bone that is movably supported on a rail laid in the longitudinal direction of a tilt is extensiblely connected by a link, and a hood is covered on the hood bone. A pair of pulleys that are axially attached to the front and rear, a drive device that rotates and drives one of the pair of pulleys, and a pair of movable pulleys that are supported so as to be able to move back and forth in one direction along the rails and that are connected to the top bone , After being hung on the pair of pulleys from the outside, hung on the pair of moving pulleys from the inside,
A hood opening / closing device including a wire rope whose one end is connected to the machine frame and a winder whose other end is connected. 2. The hood opening / closing device according to claim 1, wherein one end of the wire rope is connected to the machine frame via a spring. 3. The hood opening / closing device according to claim 1, wherein one end of the wire rope is connected to a winder instead of being connected to a machine frame. 4. The hood opening / closing device according to claim 1, wherein the winder is adapted to rotate only in the winding direction by the hacking mechanism.