JP2573049Y2 - Seat wing opening and closing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a seat wing opening / closing device, and more particularly to a cargo wing trailer, a wing truck, and the like, which lifts a sheet wing which forms a part of a roof portion and a side wall portion of a cargo compartment of a cargo transportation vehicle. The present invention relates to an opening / closing device for a seat wing of a freight transport vehicle in which a side portion of a room is fully opened.

[0002]

2. Description of the Related Art An L-shaped seat wing forming a part of a roof portion of a cargo compartment and an upper portion of a side wall portion provided on a cargo carrier of a cargo transport vehicle is vertically rotatably mounted on the left and right sides of the cargo compartment. When loading or unloading cargo from the cargo hold, the sheet wing is flipped up and the side of the cargo hold is fully opened.
Cargo transport vehicles that facilitate loading and unloading are well known, and various types of seat wing opening / closing devices have been developed.

For example, as shown in FIG. 3, on the back side of a roof portion 3 of a seat wing 2 (a closed state is indicated by a dotted line, and a flip-up state is indicated by a solid line) of a cargo compartment 1 of a freight transport vehicle. A rod member 5 rotatably mounted on the central portion 6 as a fulcrum is provided (an arrangement with the seat wing closed is indicated by a dashed line, and an arrangement with the seat wing opened is indicated by a solid line). Then, one end 7 of the rod member 5 is pivotally attached to a bracket 9 provided on the roof portion 3, and a flexible member 12 such as a wire, a rope, or a chain (the arrangement with the sheet wing closed is indicated by a two-dot chain line). , And the arrangement with the seat wing open is shown by a solid line).
The sheet is passed from a winding section 27 attached to a lower portion of the side wall section 4 of the seat wing 2 to a fastening section 26 on the cargo compartment side via a rotating member 25 such as a pulley provided at the other end 10 of the seat. When the wing 2 is flipped up and opened, the flexible member 12 is pulled downward at the fastening portion 26, and the rod member 5
Is pivoted with its central portion 6 as a fulcrum, thereby pushing up a pivotal connection portion 8 between the one end 7 of the rod member 5 and the seat wing 2 to open the seat wing 2 upward as shown by a solid line. A seat wing opening / closing device has been proposed.

[0004] Usually, as the seat wing, a known structure such as a hood sheet or a metal panel is used. At the lower end of the cargo compartment of the cargo transport vehicle, as shown in FIG. 24 and the like, and the side surface of the cargo compartment 1 is formed by the tilt 23 and the sheet wing 2. The right side of the cargo compartment 1 in FIG. 3 shows a state in which the tilt is closed, and the left side shows a state in which the tilt is open. In the figure, reference numeral 22 denotes a frame of the cargo compartment 1.

[0005] As shown in FIG.
Bending wing 2 having a spring material hinge portion 29 below the sheet wing 2 (the closed state and the halfway up state are indicated by a dotted line, and the opened up state is indicated by a solid line).
8 (the arrangement with the sheet wing closed and halfway up) is shown by a dashed line, and the arrangement with the sheet wing open is shown by a solid line. There has also been proposed an opening / closing device configured to open and close the sheet wing by the action of a bending operation rod elastically deformed at the hung rope 12 and the hinge portion 29 (Japanese Utility Model Application Laid-Open No. 62-177520).
issue). Specifically, one end of the bending operation rod 28 is connected to the frame 22.
And the other end is pivotally attached to the lower portion of the side wall 4 of the seat wing 2.
The rope 12 (the sheet wing is closed) from the rope connecting piece 35 provided on the frame 8 to the lower end of the side wall 4 of the sheet wing through the guide roller 31, the winding section 32, and the guide rollers 33 and 34 attached to the frame 22. (Indicated by an alternate long and two short dashes line while the seat wing is open is indicated by a solid line). When the sheet wing is opened, the take-up part 32 is rotated and the rope connecting piece 35 is pulled via the guide roller 31, and the sheet wing 2 resiliently deforms the rotation shaft 36 by the spring material hinge part 29. When the seat wing 2 is closed by opening upward as the center, the take-up part 32 is rotated to pull the pivotal joint between the sheet wing 2 and the bending operation rod 28 downward, so that the spring material hinge part 29 is in the acute angle direction. To restore the seat wing to its original closed state.

However, in the above-mentioned opening / closing device for the seat wing, when the seat wing is opened, the seat wing jumps up sharply and the degree of the jump is large, and a considerable force is required for the opening / closing operation. A sudden jump of the sheet wing will accelerate the damage of the sheet wing, which is not preferable in terms of safety. Depending on the cargo to be loaded or unloaded, it may not be necessary to increase the openness of the seat wing,
The opening / closing structure in which the degree of the seat wing springing up is always large is not always efficient in terms of operability.

That is, in the opening and closing device shown in FIG. 3, when the flexible member 12 is pulled to rotate the rod member 5 about the central portion 6 and the sheet wing 2 is opened upward, the rotation of the rod member 5 is performed. A considerable force is required at the start of the movement, but when the rod member 5 rotates to some extent, the force required for the rotation suddenly decreases, so that the seat wing 2 is suddenly flipped up. In the opening and closing device shown in FIG.
It is opened and closed by the elastic deformation of
When the hinge 8 is opened to a certain dead point, the spring material hinge 29
The repulsive force of the sheet wing rapidly increases in the direction in which the seat wing 2 is opened, and as a result, the sheet wing 2 jumps up sharply.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems in the seat wing opening / closing device. It is an object of the present invention to provide a seat wing opening / closing device that does not jump up and can change the degree of jumping.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, a seat wing opening / closing device according to the present invention lifts a sheet wing forming a roof portion and a side wall portion of a cargo compartment of a freight transport vehicle, and lifts the seat wing. In the opening / closing device for a sheet wing of a freight transport vehicle having a side portion fully opened, an end portion of a rod member rotatably mounted on a center portion as a fulcrum is pivotally attached to a roof portion of the sheet wing, A flexible member is spanned from the pivot portion to the other end of the rod member via the rotating portion, and a rotation displacement member for displacing the flexible member and removing its slack is disposed, By pivoting the pivoting member, pulling the other end of the rod member downward through the flexible member, and pivoting the rod member around the center thereof, the rod member is pivotally connected to one end of the rod member. Open the seat wing upward The first configuration is to close the seat wing by rotating the rotating portion in the opposite direction, pulling the pivoting portion downward through the flexible member, and rotating and returning the rod member around the center portion thereof as a fulcrum. And a slack adjusting member for adjusting the slack of the flexible member spanned from the pivoting portion between the seat wing and the rod member to the rotating portion is interposed. 2.

[0010]

According to the present invention, one end of a rod member having a central portion pivotally attached thereto is pivotally attached to a roof portion of a seat wing, and the pivot member is connected to the other end of the rod member via a pivot portion. Since the flexible member is stretched over, the pivotal portion of the rod member is used as a fulcrum at the shaft attachment portion of the rod member, and all of the tensile force of the flexible member acts as a rotating force of the rod member for opening the sheet wing. The opening and closing operation can be performed with a small force. In addition, since the flexible member is in a stretched state without bending by the rotational displacement member, when the rotating portion is rotated and the flexible member is pulled, the flexible member is in accordance with the amount of rotation of the rotating portion. Since the opening and closing of the seat wing is performed by a predetermined amount, a sudden jump of the seat wing is avoided. Further, by adjusting the slack of the flexible member with the slack adjusting member, the degree of opening and closing of the seat wing can be adjusted.

[0011]

Embodiments will be described below. The same numbers are used for the same members as in the conventional example. FIG. 1 shows an embodiment of the present invention, in which a seat wing 2 of a cargo compartment 1 of a cargo transport vehicle having a frame 22 (a closed state is indicated by a dotted line,
On the back side of the roof part 3 of the flipped-up and open state is shown by a solid line, a rod member 5 rotatably mounted on a center part 6 as a fulcrum (the arrangement with the seat wing closed is shown by a dashed line). , The arrangement with the seat wing open is shown by a solid line), and one end 7 of the rod material 5 is attached to the roof 3.
And a flexible member 12 such as a wire, a rope, a belt, or a chain via a rotating portion 11 between the pivoting portion 8 and the other end 10 of the rod member 5.
Over. A rotational displacement member 15 is disposed on a portion 13 of the flexible member 12 from the pivot portion 8 to the pivot portion 11 and a rotational displacement member 15 is disposed on a portion 14 from the pivot portion 11 to the other end portion 10 of the rod member. The members 17 and 18 are provided to remove the slack of the flexible member 12. As the rotational displacement member, rolls that engage with ropes, gears that mesh with chains, etc.
It is selected according to the flexible member. The length from the central portion 6 to one end 7 of the rod member 5 is equal to the length from the central portion 6 to the other end 10 of the rod member 5.

When the sheet wing 2 is flipped upward and opened, the rotating portion 11 is rotated manually or by means of an electric motor or the like to pull the flexible member 14 downward. Pivots about the central portion 6 to lift the pivotal connection 8 between the one end 7 of the rod member 5 and the seat wing 2 to open the seat wing 2. All the pulling force of the flexible member 14 acts as a turning force of the rod member 5, and the shaft attachment portion 6 at the center of the rod member serves as a fulcrum, so that the seat wing can be opened with a small force. . Since the flexible member 12 is in a stretched state without slack by the rotational displacement member, when the rotating portion is rotated to pull the flexible member and open the sheet wing, the flexible member 12 The seat wing is opened by an amount corresponding to the amount of rotation, so that a sudden jump of the seat wing is avoided.

When the seat wing 2 is to be closed, the rotating member 11 is turned in the opposite direction and the flexible member 13 is pulled downward, and the rod member 5 is turned in the opposite direction to the opening of the sheet wing. As a result, the pivot portion 8 between the rod member 5 and the seat wing 2 is pulled down, so that the seat wing returns to the closed state. Also in this case, similar to the opening operation of the seat wing, the operating force is small and the seat wing is closed by an amount corresponding to the amount of rotation of the rotating portion 11, so that a sudden movement of the sheet wing is avoided.

Reference numeral 16 denotes a slack adjusting member for adjusting the slack of the flexible member 12. Slack adjusting member 16
Is composed of a combination of a displacement roll or gear 19, a screw member 20 and a nut member 21, as shown in FIG. 2, and the displacement amount of the flexible member 13 bridged from the pivot portion 8 to the pivot portion 11, That is, the slack amount is adjusted. By appropriately adjusting the amount of slack of the flexible member, the opening and closing of the sheet wing can be stopped halfway, and the degree of opening and closing of the sheet wing can be changed.

[0015]

As described above, according to the present invention, a sudden jump of the seat wing is avoided, the durability of the seat wing is improved, and the safety of operation is ensured. Since the opening and closing force is small, the opening and closing operation is easy.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of a seat wing opening / closing device according to the present invention.

FIG. 2 is a view showing an embodiment of a slack adjusting device used for the seat wing opening / closing device according to the present invention.

FIG. 3 is a main part front view showing an example of a conventional seat wing opening / closing device.

FIG. 4 is a main part front view showing another example of the conventional seat wing opening / closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cargo compartment 2 Seat wing 3 Seat wing roof part 4 Seat wing side wall part 5 Rod member 6 Shaft attachment part 7 One end part of rod member 8 Pivot part 9 Bracket 10 The other end part of rod member 11 Rotating part 12 Possible Flexible member 13 Flexible member part 14 Flexible member part 15 Rotational displacement member 16 Slack adjustment member 17 Rotational displacement member 18 Rotational displacement member 19 Displacement roll 20 Screw member 21 Nut member 22 Frame 23 Tilt 24 Hinge 25 Pulley 26 Fixing part 27 Rewinding part 28 Refracting operation rod 29 Spring material hinge part 30 Bracket 31 Guide roller 32 Rewinding part 33 Guide roller 34 Guide roller 35 Rope connecting piece 36 Rotating shaft

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-126630 (JP, A) Japanese Utility Model Showa 59-137821 (JP, U) Japanese Utility Model Showa 59-147624 (JP, U) Japanese Utility Model Showa 63- 177520 (JP, U) Japanese Utility Model 60-16616 (JP, U) Japanese Utility Model 58-622 (JP, U) Japanese Utility Model 59-169221 (JP, U) (58) Fields surveyed (Int. ⁶ , DB name) B60J 7/08

Claims (2)

(57) [Scope of request for utility model registration] 1. An opening and closing device for a sheet wing of a cargo transport vehicle, wherein a sheet wing forming a part of a roof portion and a side wall portion of the cargo compartment of the cargo transport vehicle is flipped up to fully open a side portion of the cargo compartment. One end of a rod member rotatably mounted on the roof of the seat wing with the central portion as a fulcrum is pivotally connected, and from the pivoted portion to the other end of the rod member via the rotation portion is flexibly connected. A flexible member for displacing the flexible member and displacing the flexible member to remove the slack,
By pivoting the pivoting part, pulling the other end of the rod member downward through the flexible member, and pivoting the rod member around the central portion thereof as a fulcrum, the rod member pivotally attaches to one end of the rod member. The seat wing is opened upward, the pivot portion is pivoted in the opposite direction, the pivot portion is pulled downward through the flexible member, and the rod member is pivotally moved back around the center portion of the rod member. Seat wing opening and closing device characterized by closing. 2. The seat according to claim 1, further comprising a slack adjusting member for adjusting a slack of the flexible member spanned from the pivot portion between the seat wing and the rod member to the pivot portion. Wing switchgear.