JP2882452B2 - Roof beam support system for roof-openable cargo vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermediate support device for a roof beam in a roof-opening type cargo vehicle.

[0002]

2. Description of the Related Art In a truck or a trailer, a roof beam is erected in a longitudinal direction between a front wall and a rear wall erected at a front portion and a rear portion of a carrier, and roof panels are vertically arranged on the left and right sides of the roof beam. BACKGROUND OF THE INVENTION Freight vehicles are known which are openable and closable, which facilitate loading and unloading of cargo from the side, and which allow the cargo to be pushed down by a roof panel and tightened. However, due to an increase in the amount of transportation and a corresponding increase in the size of the vehicle, the span of the roof panel supporting member installed between the front wall and the rear wall increases. Accordingly, the size of the roof panel supported thereby is inevitably increased.
As a result, the load on the roof panel supporting member increases, causing bending, which hinders the opening / closing mechanism of the roof panel and often causes a problem.

[0003] Conventionally, such a device for supporting an intermediate portion of a roof beam is disclosed in, for example, Japanese Utility Model Publication No.
156883. Both are common in that the support device is set up at the center of the carrier, but the former is connected to the carrier and the roof beam by the locking devices provided at the upper and lower ends of the support device, so if the carrier is bent, it will be supported. Deflection of the carrier is directly received by the roof beam via the device. On the other hand, in the latter, the pin provided at the lower end of the support device is fitted into the hole of the carrier, and the engaging portion provided at the upper end is engaged with the roof beam, so the disadvantage of the former is eliminated, When the roof beam and the bed are flexed, there is a danger that the engaging portion of the support device may come off and fall.

[0004] As described above, the present invention has been made in consideration of the problems of the conventional roof beam support device, and has studied the causes of various inconveniences. Conventionally, when the support device is set, the height of the support device is set to an appropriate height or higher. FIG. 4A shows a bed (floor portion) of a wing vehicle provided with the support device a, which is bent when loading a load. Conventionally, the support device a set due to such bending of the carrier cannot reach the height of the roof beam b, and may not fulfill its original function. FIG. 2 (b) shows, by dotted lines, a state in which the roof beam b flexes and swings up and down due to the impact of the vehicle when the vehicle travels. In such a situation, the support device a falls over or the cargo vibrates. Caused damage.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has been made in consideration of the above circumstances. It is an object to provide a support device.

[0006]

SUMMARY OF THE INVENTION In a roof-opening / closing type vehicle having an L-shaped cross-section roof panel which is openably and closably left and right with a roof beam 7 erected in the front-rear direction at the center of the top of a luggage compartment. In a supporting device for a roof beam erected between the roof beam 7 and the cargo bed 1, the supporting device A has a positioning pin 14 at a lower end and a lower pillar 10 having a collar 15 at an upper portion.
And a stopper connected to the upper part of the lower column 10
A length adjusting portion 16 having a screw rod 16b to which a screw 16e is fixed, and a spring support cylinder 18 having a screw collar 11a screwed to the screw rod 16b at a lower end and an elastic body such as a coil spring 17a inserted at the upper end. And the lower end is provided with a spring support cylinder 18.
The upper column 12 is in contact with the upper end of the coil spring 17a inserted into the upper column 12 and is provided with an engaging pin 22 for the roof beam 7 at the upper end, and is connected slidably up and down by a spring support cylinder 18 and a retaining bolt 19. The elastic member 17 can absorb vibration. Further, a coil spring 17a constituting an elastic portion is a gas damper comprising a piston 28 provided on a piston rod 27 attached to the upper end of the intermediate column 11 and a cylinder 29 in which compressed gas 30 is sealed.

[0007]

Since the maximum extension position of the support device A is designed to be an appropriate height, the problem that the roof beam 7 is warped upward conversely is solved since the support device A is set at an appropriate height or more at the time of setting. Even if the loading bed 1 is bent by the load of the loaded luggage after setting, the roof beam 7 is also
The problem that the elastic device such as a coil spring or a gas damper follows the movement of the roof beam 7 and the support device comes off even if the rocker swings up and down.

[0008]

FIG. 2 is an enlarged sectional view of the supporting device A of FIG. FIG. 1 is a perspective view of a vehicle provided with a support device A, and FIG.
Is the bed of the vehicle. The bed 1 is supported by wheels 2..., And a tilt 3 is provided on the side as necessary. Reference numeral 4 denotes a front wall erected at the front of the bed 1, and 5 denotes a rear wall erected at the rear of the bed 1. It should be noted that the rear wall 5 can be provided with doors 6 and 6 hinged as shown in the figure so that luggage can be taken in and out from behind.

Reference numeral 7 denotes a roof beam installed between the front wall 4 and the rear wall 5. Roof beams 7 have wing-shaped roof panels 8
Are hinged. Roof panels 8, 8
For example, it can be opened and closed vertically by opening and closing devices 9, 9 such as hydraulic cylinders (the figure shows an open state).

The details of the support device A will be described with reference to FIG. The supporting device A includes a lower column 10, an intermediate column 11 connected to the lower column 10 by a length adjustment unit 16, and an upper column 12 connected to the intermediate column 11 and an elastic unit 17.

The lower column 10 is hollow and has a positioning pin 14 at the lower end for engaging with a hole 13 formed in the carrier 1. A collar 15 is fixed to the top of the lower pillar 10. Reference numeral 16 denotes a length adjusting unit that connects the lower pillar 10 and the intermediate pillar 11. The length adjusting portion 16 has a connecting portion 16a which is fitted into a collar 15 fixed to the top of the lower pillar 10 at the lower portion and which is prevented from falling off by a stopper ring 16c, and a long screw rod 16b at the upper portion. A stopper 16e provided at the upper end is integrally provided. 16d is a screw operation unit. The screw rod 16b is an intermediate pillar 11
Is screwed with the screw collar 11a fixed to the lower end of the screw. 11b is a lock nut for fixing the length adjustment position.

Reference numeral 17 denotes an elastic portion, which is an intermediate column 11 and an upper column 12.
And a spring support cylinder 18 fitted and welded to the intermediate column 11
And a coil spring 17a fitted on the outside thereof. The lower end of the coil spring 17a is in contact with the collar 18a provided in the spring support tube 18, and the upper end is in contact with the lower end of the upper column 12. Reference numeral 19 denotes a retaining bolt which is a long hole 20 provided in the upper column 12.
And screwed into the spring support cylinder 18. Reference numeral 21 denotes an engaging member fixed to the top of the upper column 12, a pin 22 engaging with a hole 22a of the roof beam 7 at the center, and a roof beam 7 on both sides.
Are provided integrally with each other.

The support device having the above configuration is attached as follows. First, the supporting device A is turned to a suitable height by turning the screw operation part 16d, and the pin 14 is engaged with the hole 13 of the carrier 1 so that the supporting device A stands on the floor. Using a spanner or the like, rotate the screw operation part 16d to extend it to the appropriate height (the position where the stopper 16e hits the head of the screw collar 11a), and push the pin 22 of the upper engaging member 21 to the roof beam. 7 into the hole 22a. After the position is determined, the lock nut 11b for screw fixing is brought into contact with the lower end of the screw collar 11a and fixed. At the time of removal, rotate the screw operation part 16d and shorten it in the same way as at the time of setting.

FIG. 3 shows another embodiment of the elastic portion 17. This is a gas damper instead of a coil spring. In this example, a gas damper support tube 24 is extended on the intermediate tube 11 via a screw block 25 instead of the spring support tube 18. Screw part 2 provided at the center of screw block 25
A screw portion provided at the lower end of the piston rod 27 is screwed into 6. At the top of the piston rod 27 is a piston 28
Has been fixed. The piston 28 can slide inside the cylinder 29. A compressed gas 30 is sealed in the cylinder 29.
The gas flows upward and downward through a hole 28 a provided in the piston 28. With this configuration, even if the roof beam vibrates, the elastic portion can follow the vibration and prevent the support device A from coming off.

[0015]

The expansion and contraction of the height of the supporting device A during setting can be operated by rotating the screw operating portion 16d of the length adjusting portion 16. And since the maximum extension position is set to an appropriate height, the roof beam is not warped. The coil spring or the gas damper of the elastic part follows the movement of the roof beam 7 even if the bed 1 is bent by the load of the loaded luggage after the setting or the roof beam 7 swings up and down due to the vibration of the running vehicle. As a result, the support device A can be prevented from coming off. As described above, the length adjustment unit 16 enables positioning at an appropriate height, and the elastic unit 17 provides a vibration-proof function. Even if it sinks, it can easily follow and function as a safe support device.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle provided with a support device of the present invention.

FIG. 2 is an enlarged detailed view of a support device A of the present invention.

FIG. 3 shows another embodiment of the elastic portion.

4A and 4B show a vibration state of a vehicle provided with the support device when the vehicle travels, wherein FIG. 4A shows a floor portion and FIG. 4B shows a vibration state of a support member.

[Explanation of symbols]

1 Carrier 2 Wheel 3 Tilt 4 Front wall 5 Rear wall 6 Door 7 Roof beam 8 Roof panel 9 Opening / closing device 10 Lower pillar 11 Intermediate pillar 11a Screw collar 11b Lock nut 12 Upper pillar 13 Hole 14 Pin 15 Color 16 Length Adjusting part 16a Connecting part 16b Screw rod 16c Stopper ring 16d Screw operating part 16e Stopper 17 Elastic part 17a Coil spring 18 Spring support cylinder 18a Color 19 Locking bolt 20 Long hole 21 Engaging member 22 Engaging pin 22a Hole 23 Rising part 24 Gas damper support cylinder 25 Screw block 26 Thread 27 Piston rod 28 Piston 28a hole 29 Cylinder 30 Compressed gas 31 Seal material

Claims (2)

(57) [Claims] 1. A roof-opening / closing vehicle having an L-shaped cross-section roof panel which is rotatably opened and closed left and right across a roof beam (7) erected in the front-rear direction at the top center of a luggage compartment. In a roof beam support device erected between the beam (7) and the loading platform (1), the support device (A) has a positioning pin (1
A lower pillar (10) having a collar (15) on the upper side with 4) and a threaded rod (16b) connected to the upper part of the lower pillar (10) and having a stopper (16e) fixed to the upper end thereof. A spring support cylinder (18) having a length adjusting portion (16), a screw collar (11a) screwed to the screw rod (16b) at the lower end, and a coil spring (17a) inserted at the upper end.
The lower end abuts on the upper end of the coiled spring (17a) fitted in the spring support tube (18), and the roof beam
(7), an upper pin (12) slidably connected vertically by a spring support cylinder (18) and a retaining bolt (19). A supporting device for a roof beam in a roof-opening-type cargo vehicle that is expanded and contracted in 16) and can absorb vibrations in an elastic portion (17). 2. A cylinder enclosing a piston (28) and a compressed gas (30) provided on a piston rod (27) having a coil spring (17a) constituting an elastic part attached to an upper end of an intermediate column (11). (2
9. The roof beam supporting device of the openable / closable cargo vehicle according to claim 1, wherein the device is a gas damper.