JP3060881U - Lifting device for truck bed - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In a truck carrier having a divided structure, each of the lifts can be selectively and substantially automatically opened and closed independently of human power with a minimum of driving means. The opening and closing device capable of easily performing a desired operation is configured at a low cost. SOLUTION: This device is provided on a side portion of a truck bed and opens and closes at least two halves in the longitudinal direction of the vehicle. The device is provided between adjacent ladders and is rotatable in the swinging direction with respect to the truck bed. A supported intermediate column, connecting means capable of independently connecting and disconnecting the intermediate column and the tilts on both sides thereof, and a link mechanism connected to the intermediate column and the lower surface of the truck bed by a hydraulic cylinder; And a driving device for rotating the intermediate column through the lever.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a tilting opening / closing device for a truck bed, and more particularly to a tilting opening / closing device for a large truck bed having at least two splits in the longitudinal direction of the vehicle.

[0002]

[Prior art]

 The lift provided on the side of the truck bed is normally opened and closed manually.However, if the lift is long, the weight increases, so the hydraulic pressure must be reduced to reduce the opening / closing force and to enable automatic opening and closing. An opening / closing device using an actuator such as a cylinder is known (for example, JP-A-5-58350).

On the other hand, in the case of a large truck, particularly a truck having a long bed in the vehicle longitudinal direction, a structure in which the tilt is divided in the vehicle longitudinal direction may be adopted. Each split has a structure that can be opened and closed independently, and there is usually an intermediate pillar between the tilts.

[0004]

[Problems to be solved by the invention]

 In the structure disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 5-58350, a drive mechanism having a hydraulic cylinder or the like is directly connected to the swing. Therefore, this structure is applied to a truck in which the swing is divided in the vehicle front-rear direction. If simply applied, a large drive mechanism would be required for each split tilt, making the tilt switch expensive.

[0005] Accordingly, an object of the present invention is to make it possible to selectively open and close each of the lifts with a minimum of driving means in a truck bed having a lift structure having a divided structure, and to automatically open and close the lift independently of human power. An object of the present invention is to provide an inexpensive opening / closing device that can easily perform a desired operation while reducing opening / closing labor.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, the swinging device for a truck bed of the present invention is provided on a side portion of the truck bed and opens and closes at least two parts in the longitudinal direction of the vehicle. Intermediate pillars provided between the swinging arms and rotatably supported in the truck opening and closing direction with respect to the truck bed, and connecting means capable of independently connecting and disconnecting the intermediate pillars and the swinging arms on both sides thereof. And a drive device connected to the intermediate column and the lower surface side of the truck carrier, and configured to rotate the intermediate column via a link mechanism by a hydraulic cylinder.

In this tilting opening / closing device, the link mechanism is provided between the intermediate column and a bracket fixed to the lower surface of the truck carrier, and the first link guides the intermediate column in a rotating direction. And a second link mechanism provided between the first link mechanism and the bracket and connected to a hydraulic cylinder to transmit a driving force of the hydraulic cylinder to the first link mechanism. Structure.

Further, the intermediate pillar has a U-shaped cross section, and tips of both legs of the U-shaped cross section can be engaged with the jaws on both sides of the middle pillar, respectively. It is also preferable to adopt a structure in which a sealing material is interposed. Further, it is preferable that both legs of the U-shaped cross section of the intermediate column extend inwardly of the truck bed in the open / closed state.

The hydraulic cylinder is operated by being connected to a hydraulic pressure source. It is preferable that the operation of the hydraulic cylinder be performed by one-touch switch operation.

[0010] In such a swinging device for a truck bed, the intermediate column and the jaws on both sides thereof are selectively connected to each other, and the intermediate column is rotated by a driving device having a hydraulic cylinder, so that the intermediate column is connected to the intermediate column. The connected swing is opened and closed with the intermediate pillar. Since the opening and closing is performed using the driving force of the hydraulic cylinder, no manual power is required for opening and closing. Further, the driving device only needs to rotate the intermediate column, and the pivot is opened and closed by the rotation of the intermediate column. Therefore, a minimum driving device is required for opening and closing the pivot. Further, the operation of the hydraulic cylinder of the drive device can be performed by one-touch switch operation, so that opening and closing operations are extremely simple.

[0011]

[Embodiment of the invention]

 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 to FIG. 3 show a swinging device for a truck bed according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a truck carrier, particularly a floor portion thereof, and reference numeral 2 denotes a swing provided on a side portion (one side or both sides) of the truck carrier 1. In the present embodiment, the swing 2 is composed of a swing 2a and a swing 2b which are divided into two in the vehicle front-rear direction, but may be divided into three or more. An intermediate column 3 is erected between the adjacent jaws 2a and 2b. The intermediate column 3 is supported by a hinge 4 (shown in FIG. 2) with respect to the truck bed 1 so as to be pivotable in the opening / closing direction. I have.

The intermediate column 3 and the tilts 2a, 2b on both sides thereof can be independently connected and disconnected by connecting means 5a, 5b. A driving device 6 is provided between the intermediate column 3 and the lower surface side of the truck bed 1 for rotating the intermediate column 3 and opening and closing the tilt 2a and / or tilt 2b through the rotation of the intermediate column 3. ing.

The driving device 6 has a hydraulic cylinder 7 and a link mechanism 8 as shown in FIG. The link mechanism 8 comprises a first link mechanism 9 and a second link mechanism 10 in this embodiment. The first link mechanism 9 includes a first arm 11 having one end rotatably connected to the intermediate column 3, and a second arm having one end rotatably connected to the other end of the first arm 11. The other end of the second arm 12 is rotatably connected to a bracket 13 fixed to the lower surface of the truck carrier 1. In this embodiment, the bracket 13 includes a first bracket 14 fixed directly to the lower surface side of the truck carrier 1 (for example, to a chassis) and a second bracket 15 fixed to the first bracket 14. The other end of the second arm 12 is rotatably connected to a second bracket 15. The first link mechanism 9 guides the intermediate column 3 in its rotating direction, that is, between the position indicated by the solid line and the position indicated by the two-dot chain line in FIG.

The second link mechanism 10 has a first lever 16 having one end rotatably connected to the other end of the first arm 11, and one end pivotally connected to the other end of the first lever 16. The other end of the second lever 17 is rotatably connected to the first bracket 14. The distal end of a rod 19 of the connection 7 is rotatably connected to a connection portion 18 between the first lever 16 and the second lever 17 of the second link mechanism 10. By the operation of the hydraulic cylinder 7, the second link mechanism 10 is driven between the solid line position and the two-dot chain line position in FIG. Therefore, the second link mechanism 10 is connected to the hydraulic cylinder 7 and transmits the driving force of the hydraulic cylinder 7 to the first link mechanism 9.

The hydraulic cylinder 7 is supplied with hydraulic pressure from a hydraulic pressure source 20, and its operation is controlled by a switching valve 22 provided in a hydraulic circuit 21. The switching valve 22 can be operated with one touch by an operation switch 23.

As shown in FIG. 3, the intermediate pillar 3 has a U-shaped cross section, and the two legs 24 of the U-shaped cross section are in the closed state of the tilt 2a, 2b (the state of FIG. 3). At, it extends inward of the truck bed. The tips of both legs 24 having a U-shaped cross section can be engaged with hook-like extending portions 25a, 25b of the jaws 2a, 2b on the side of the intermediate column 3, respectively. For example, sealing materials 26a and 26b made of waterproof rubber are interposed. The sealing members 26a and 26b may be attached to any of the side surfaces 2a and 2b and the intermediate column 3 by bonding or the like.

In the present embodiment, the connecting means 5 a and 5 b are provided on the outer surface side of the intermediate column 3, and are attached to the brackets 27 a and 27 b attached to the intermediate column 3 and the tilt 2 a. The connection between the bracket 28a and the bracket 28b attached to the side of the tilt 2b can be performed by connecting pins 29a and 29b. The connection pins 29a and 29b are provided with enlarged diameter portions 30a and 30b for position control, and the connection pins 29a and 29b are slid to move the brackets 27a and 28a and the brackets 27b and 28b. Concatenate or unlink. As a result, the intermediate pillar 3 is selectively connected to and released from the tilt 2a and / or 2b. Although the connection pins 29a and 29b are manually operated in the present embodiment, a dedicated actuator (not shown) may be provided so that the connection pins 29a and 29b can be automatically operated. Further, the structure of the connecting means 5a, 5b is not limited to the structure of the present embodiment, and any other structure, for example, a commercially available connecting tool can be adopted.

In the truck bed swing opening / closing apparatus according to the present embodiment configured as described above, each of the swings 2a and 2b in the divided configuration is selectively connected to the intermediate pillar 3 via the connecting means 5a and 5b. Is done. The intermediate column 3 is automatically rotated by a driving device 6 having a hydraulic cylinder 7 by one-touch switch operation without requiring any human power. The pivot 2a and / or 2b connected to the intermediate column 3 is automatically opened and closed with the rotation of the intermediate column 3, so that the desired pivot can be extremely easily performed without requiring human power. It is opened and closed. Since this opening and closing is performed by the minimum driving device 6 for driving the intermediate column, the entire opening and closing device can be configured at low cost.

The direction of the U-shaped cross section of the intermediate column 3 is specified, and the seal members 26a and 26b are interposed between the intermediate column 3 and each of the tilts 2a and 2b. This makes it possible to improve the waterproofness of the vehicle.

[0020]

[Effect of the invention]

 As described above, according to the tilting device for a truck bed of the present invention, it is possible to selectively and substantially automatically open and close the tilt of the divided structure, and to reduce the number of drive mechanisms of the opening and closing device. The entire apparatus can be configured at low cost while minimizing it. Further, by improving the structure of the engaging portion between the intermediate pillar and each of the swings, the waterproof property of this portion can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a truck having a bracket open / close device according to an embodiment of the present invention.

FIG. 2 is an enlarged side view of the tilting opening / closing device of FIG. 1;

FIG. 3 is a partial cross-sectional view of the swing opening / closing device of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Truck bed 2, 2a, 2b, tilt 3 Intermediate pillar 4 Hinge 5a, 5b Connecting means 6 Drive 7 Hydraulic cylinder 8 Link mechanism 9 1st link mechanism 10 2nd link mechanism 11 1st arm 12 2nd arm DESCRIPTION OF SYMBOLS 13 Bracket 14 1st bracket 15 2nd bracket 16 1st lever 17 2nd lever 18 Connecting part 19 Rod 20 Hydraulic power source 21 Hydraulic circuit 22 Switching valve 23 Operation switch 24 Leg part 25a, 25b hook-shaped extension Set portions 26a, 26b Sealing materials 27a, 27b Brackets 28a, 28b on the middle column side Brackets 29a, 29b on the flank side Connecting pins 30a, 30b Large diameter portion

Claims (5)

[Utility model registration claims] 1. A device for opening and closing a swing which is provided at a side portion of a truck bed and is divided into at least two parts in a longitudinal direction of the vehicle, and is provided between adjacent swings, and is rotatable in the swing opening and closing direction with respect to the truck bed. And an intermediate column supported by the intermediate column, and a connecting means capable of independently connecting and disconnecting the intermediate column and the tilts on both sides thereof; and a connecting means connected to the intermediate column and the lower surface side of the truck bed by a hydraulic cylinder. And a drive device for rotating the intermediate column through a mechanism. 2. A first link mechanism provided between the intermediate column and a bracket fixed to a lower surface of a truck bed, the first link mechanism guiding the intermediate column in a rotating direction;
A second link mechanism provided between the first link mechanism and the bracket, the second link mechanism being connected to a hydraulic cylinder and transmitting a driving force of the hydraulic cylinder to the first link mechanism. Item 1. Lifting and closing device for a truck bed according to Item 1. 3. The intermediate column has a U-shaped cross section, and the ends of both legs of the U-shaped cross section can be engaged with the jaws on both sides of the intermediate column, respectively. The swinging and opening device for a truck bed according to claim 1 or 2, wherein a sealing material is interposed in the truck. 4. Both legs of the U-shaped cross section of the intermediate pillar,
4. The apparatus of claim 3, wherein the apparatus extends inwardly of the truck bed in the open / close state. 5. The swinging and opening device for a truck bed according to claim 1, wherein the hydraulic cylinder is connected to a hydraulic pressure source, and the operation of the hydraulic cylinder is switch-operable.