JPS5933693Y2 - Power transmission device in automatic seat hanging device for trucks - Google Patents

Description

[Detailed description of the invention] The present invention is an automatic seat hooking device for trucks that can automatically hide the truck bed with a sheet, and a truck that can reliably operate a seat mounting rod with a seat attached with a simple configuration. The automatic seat hanger is related to the power transmission device in the apparatus, and its structure will be described in detail below with reference to the attached drawings showing one embodiment.

Rotating shafts 3, 3' are horizontally mounted above the left and right side swings 2, 2' of the truck 1, respectively, along the side swings 2, 2'.

A drive motor 4 for rotating the rotating shafts 3, 3' is provided at an appropriate location on the vehicle body.

Vibrating rods 5 are provided before and after the rotating shafts 3, 3'.

A seat mounting rod 7 to which a seat 6 is attached is connected to the vibrating rod 5.

By rotating left and right rotating shafts 3 and 3' in forward and reverse directions by a drive motor 4, a vibrating rod 5 is vibrated, and a loading platform 8 is provided with a seat 6 attached to a seat mounting rod 7 so as to be hidden or open.

In such an automatic truck seat hanging device, a main sprocket 10 is provided on the main shaft 9 of the drive motor 4.

First, attach a torque limiter 13 to the input shaft 12 of the reducer 11.

A sprocket 14 is attached according to this torque limiter 13.

A drive chain 15 is suspended between the main sprocket 10 and the slave sprocket 14.

Note that the same applies even if the torque limiter 13 is attached to the main shaft 9.

Two branch sprockets A, A, B, and B are fixed in parallel to the output shaft 16 of this speed reducer 11.

Driving sprockets C,
Fix C, D, and D.

These drive sprockets C, C and branch sprockets A, A
In a parallel state, the transmission chains E, E with turnbuckles 17 interposed between the upper transfer section and the lower transfer section are suspended.

Drive sprocket D, D and branch sprocket B.

In this state, a transmission chain F, F is suspended between a connecting rod 19 having a window hole 18 through which a second force transfer section is inserted between the one force transfer section.

The operating mechanism of the seat mounting rod I in the drawings is to fix the base end of a vibrating rod 5 before and after the rotating shaft 3°3', and pivot the tip of this vibrating rod 5 to the middle of the seat installing rod 7. Two sheets 6 are stretched from the tip of each seat mounting rod 7 to the base end of the vibrating rod 5, and the sheets 6 are large enough to cover the loading platform 8 when expanded to the front and rear seat mounting rods 7. Both ends of a link rod 21 are pivotally connected to the base end and a pivoting portion 20 provided on the lower outer surface of the side tilt 2° 2'.

That is, if the vibrating rod 5 is vibrated inward by the rotating shafts 3 and 3', the sheet 6 attached to the seat mounting rod 7 will cover the loading platform 8, and if the vibrating rod 5 is vibrated outward, the sheet 6 will form a V-shape. It is folded into a shape and is housed between the vibrating rod 5 and the seat mounting rod 7.

Note that, depending on the vibration angle of the vibrating rod 5, the length of the window hole 18 formed in the connecting rod 19 should be about 3/4 of the outer circumferential length of the sprockets D, D.

Reference numeral 22 is an adjustment nut for the torque limiter 13, and 23 is a disc spring.

Conventionally, because it was necessary to rotate the left and right rotation axes in different directions, a pair of gear trains was provided near the rotation axis of force, and the direction of rotation was changed through this gear train. , this gear train complicates the transmission mechanism,
This also caused high costs.

Further, as a prior art, there is one disclosed in Japanese Utility Model Application Publication No. 49-137216, but in this prior art, pulleys are fixed to the left and right torque shafts, and an electric winch is arranged at the center position of the torque shafts. This conventional technology consists of two drums fixed to this electric winch and a wire fixed to the drums wrapped around each pulley. However, there is a problem in that mud builds up on the drum and pulley, making the transmission unstable and preventing smooth operation.

In order to eliminate such drawbacks, the present invention fixes branch sprockets A, A, B, and B to the output shaft 16 of the reducer 11 driven by the drive motor 4, and connects the left and right rotating shafts 3,
3' drive sprockets C, C, D, and D, respectively.
Drive sprocket C2C and branch sprocket) Suspend transmission chains E and E in parallel to drive sprocket D.

Since the transmission chains F and F are suspended in the cross-haired state between D and branch sprockets B and B, first of all, since the power is transmitted by the chain sprocket mechanism, even if the dump truck handles muddy soil, the operation will be possible. The sheet opening/concealing operation becomes smooth and reliable.

In addition, since the rotating shafts 3 and 3' rotate in different directions in this way, there is no need for intervening gear trains as in the conventional case, so it can be manufactured at an extremely low cost, and maintenance and maintenance can be reduced. It is extremely effective in terms of conservation.

Furthermore, since turnbuckles 17 are interposed between the upper and lower transfer parts of the conduction chains E, E,
In addition to applying tension to E, the rotating shaft 3,
When adjusting the attachment angle of the vibrating rod 5 provided at 3', the attachment angle can be easily adjusted by adjusting each turnbuckle 17, which is extremely convenient.

Further, a connecting rod 1 with a window hole 18 formed in the conduction chain F, F
9, the transfer section is inserted through the window hole 18, and there is no sliding contact between the transfer sections, and the rotating shaft 3.degree. 3' can be rotated that much more smoothly.

Furthermore, since the torque limiter 13 is provided between the main shaft 9 of the drive motor 4 and the input shaft 12 of the reducer 11, the vibration rod 5 and the seat attachment rod 7 are prevented from colliding with an obstacle 24, for example, by mistake during operation. In this case, the motor will idle due to overload, which means that no power will be transmitted to the rotating shaft 3.degree. 3', which is extremely effective in terms of safety.

Furthermore, since the overall structure is simple, mass production is possible, which means that it can be manufactured at a lower cost.

As described above, according to the present invention, the automatic seat rack for trucks has excellent practical effects such as being able to reliably operate the seat mounting rod to which the seat is attached with a simple structure. will be provided.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is an overall front view, Fig. 2 is a rear view, Fig. 3 is a perspective view of the main parts, and Fig. 4 is a sectional view of the torque limiter. . A, B... Branch sprocket AB, C, D...
...Drive sprocket CD, E, F...Conduction chain, 1...Track, 2,2'...
...Side tilt, 3゜3'...Rotation axis, 4
...... Drive motor, 5... Vibrating rod, 6
... Seat, 7... Seat mounting rod, 8
...Loading platform, 9...Main shaft, 10...
・・Main sprocket, 11・・Reducer, 12・
...Input shaft, 13...Torque limiter,
14...Following sprocket, 15...Drive chain, 16...Output shaft, 17...
・Turnbuckle, 18...Window hole, 19...
...Connecting rod.

Claims (1)

[Scope of utility model registration request] Rotating shafts are horizontally mounted above the left and right side swings of the truck along the side swings, drive motors for rotating these rotating shafts are installed at appropriate locations on the vehicle body, and vibrating rods are installed in front and behind the rotating shafts, A seat mounting rod to which a seat is attached is connected to this vibrating rod, and a drive motor rotates the left and right rotating shafts in forward and reverse directions, making the vibrating rod vibrate and allowing the sheet attached to the seat mounting rod to hide and open the loading platform. The automatic seat rack for trucks installed in the equipment is equipped with a main sprocket on the main shaft of the drive motor, a torque limiter is attached to the input shaft of the reduction gear, a sprocket is attached to the torque limiter, and the main sprocket and the subordinate sprocket are attached. A drive chain is suspended around the sprocket, two branch sprockets A and B are fixed in parallel to the output shaft of the reducer, and drive sprockets C and D are fixed to the left and right rotating shafts, respectively.
The drive sprocket C and the branch sprocket A are connected in parallel by a transmission chain E having a turnbuckle interposed between the upper punch feeding part and the lower punch feeding part respectively, and the drive sprocket D and the branch sprocket B are connected in parallel. The automatic seat hook for trucks is characterized in that the cross hook suspends a transmission chain F having a connecting rod interposed between the one force transfer section and a window hole through which the other force transfer section is inserted. Power transmission device in equipment.