JP2000225846A - Luggage compartment opening and closing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight of a luggage compartment opening and closing mechanism rotating a wing. SOLUTION: By mounting an upper side panel 7a of a wing and a cylinder device 11 on a supporting body 9 movable in a car width direction, setting a rotation center 11a of the cylinder device 11 on the lower side of a rotation center 10a of the upper side panel 7a, connecting (pivotally supporting) a rod tip part 11b of the cylinder device 11 extending obliquely downward with the upper side panel 7a and elongating the rod of the cylinder device 11, the cylinder device 11 is constituted so as to rotate upward together with the wing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luggage compartment opening / closing mechanism for rotating a wing forming a side surface of a luggage compartment of a vehicle.

[0002]

2. Description of the Related Art There is known a truck having a box-shaped luggage compartment formed by a roof panel, left and right side panels, and front and rear panels. Of these types of trucks, especially for large vehicles, there has been a request to remove the roof and walls of the luggage compartment or move it to the evacuation position and open the upper part of the luggage carrier in order to facilitate cargo handling work using cranes and forklifts. is there. Then, rotate the wing upward to open the cargo compartment side,
In addition, a truck having a luggage compartment opening / closing device capable of moving the wing lifted up to one side of the luggage carrier together with the column has been developed (for example, see JP-A-63-41238). In this case, a wing is attached to a support shaft extending in the vehicle longitudinal direction above the luggage compartment, and the wing is rotated by rotation of a geared motor directly connected to the support shaft.

[0003]

By the way, when a large vehicle is used, the wing becomes large, and a large torque is required for the rotation of the wing. Increasing the size of the geared motor not only causes an increase in weight, but also increases the position of the center of gravity of the vehicle. In addition, since the support shaft of the wing needs to be made thicker in accordance with the transmission torque, there is a problem that the total weight is further increased.

The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the weight of a luggage compartment opening / closing mechanism for rotating a wing.

[0005]

To this end, the following luggage compartment opening / closing mechanism has been created. The first invention has a configuration as described in claim 1. This luggage compartment opening and closing mechanism
As schematically shown in FIG. 14, the center of rotation (10) of the wing (the upper side panel (7a) of the wing is shown in FIG. 14).
Below the a) is the center of rotation (11a) of the cylinder device (11), and the rod end (11b) of the cylinder device (11) extending obliquely downward is connected (pivoted) to the upper side panel (7a). ing. Therefore, when the rod of the cylinder device (11) extends, the cylinder device (11) rotates upward with the wing. The supports (9, 10) can be moved in the vehicle width direction as they are with the upper side panel (7a) lifted up by the cylinder device (11).

As described above, by using the cylinder device instead of the conventional geared motor, the mechanism can be simplified and the weight can be reduced. In addition, since a support shaft for transmitting torque to the wing is not required, a simple and inexpensive hinge can be used instead of the bearing. The support is stable because it supports the position away from the base end of the wing. When the wing is in the closed position, the cylinder device is turned downward,
The position of the center of gravity is lower than in the open position.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a vehicle (large truck) having a box-shaped luggage compartment. The luggage compartment 1 includes a rear door 4 attached to a rear frame 3 erected at a rear end of the luggage carrier 2, a wall surface of a front frame 5 erected at a front part of the luggage carrier facing the rear door 4, Left and right swings 6 provided on the side of the loading platform, and left and right wings 7 located above each swing 6
And a roof 8 covering the carrier 2, the section is formed in a substantially rectangular box shape. Although described later in detail, the luggage compartment 1 is provided with a luggage compartment opening / closing device that moves the wing 7 and the roof 8 to open the upper portion of the luggage compartment symmetrically with respect to the luggage compartment center line. Hereinafter, each part will be described in detail.

FIG. 2 is a perspective view of the cargo room 1 with the wing 7 lifted up. As shown in the figure, the rear frame 3 forms the rear skeleton of the luggage compartment 1 and is formed in a portal shape with a steel shape or the like, and the left and right columns 3a stand upright in the vicinity of the rear corner of the luggage carrier 2 and are fixed. Has been established. A rail 3c (described below) extending in the vehicle width direction is provided on the horizontal member 3b at the upper ends of the left and right columns 3a, and a support member 9 which is a so-called self-propelled carriage is movably mounted on the rail 3c. ing. Note that the rear frame 3 has an outer plate 3d on the rear side (outside the cargo room) for protecting the rails 3c and the support members 9 and closing the gap to improve the appearance. FIG. 3 is a view for explaining the luggage compartment opening / closing device in a state where the outer plate 3d is removed (the rear frame 3 is in a vertical section), FIG. 4 is an enlarged view of a main part of FIG. 3, and FIG. 4 is a partial side view of the luggage compartment 1 showing a portion corresponding to FIG.

The rail 3c is, as shown in FIG.
The cross section has a substantially rectangular groove, in which a wheel 9a rotatably attached to the support member 9 is formed so as to roll. A worm gear type geared motor 9b is mounted on the support member 9, and a sprocket 9c mounted on a shaft end of the geared motor 9b on the worm wheel side is fixed to an upper surface of the horizontal member 3b and extends in a vehicle width direction. The support member 9 is moved by the rotation of the geared motor 9b which is in mesh with 3e. The above chain 3e can be replaced by a suitable guide member such as a rack, and a worm gear type geared motor 9
Although a suitable drive device can be used instead of b, a device that can prevent the rotation of the sprocket 9c except during operation is preferable.

Two support members 9 are mounted on the rail 3c. As shown in the figure, the support members 9 denoted by the same reference numerals are opposite in right and left (symmetrical with respect to the cargo room center line) as shown. further,
Lateral member 5b of front frame 5 forming the front skeleton of luggage compartment 1
In addition, a rail (not shown) extending in parallel with the rail 3c is provided, and a pair of left and right support members 9 are mounted on this rail in the same manner as the rear frame 3 so as to be movable in the vehicle width direction. In the upper part of the luggage compartment, two left and right beams 10 are supported by these two support members 9 which are divided into left and right so as to be movable in the vehicle width direction.

The two beams 10 are fixed at both ends to the support member 9, respectively, and are provided so as to extend over the upper end portions of the rear frame 3 and the front frame 5. Extending in the direction. And
Sprockets (drive wheels) 9c of the support member 9 located near both ends of each beam 10 are connected by a connection shaft (rotation shaft) 9d extending in parallel with the beam 10. This connecting shaft 9
d is rotatably supported by the beam 10 via a bearing (not shown) and has a connection structure having an appropriate joint, so that it can rotate smoothly by absorbing dimensional errors, and Easy to assemble.

That is, the above-described sprocket 9c is a driving wheel, and one set (a pair of front and rear) of driving wheels (sprocket 9c) connected to different driving sources is one connecting shaft 9d.
, Which are always tuned and rotated, are simple, hard to break down, and have a reliable configuration. The moving means of this embodiment is configured as described above. In addition, the support member 9 and the beam 10 are support bodies referred to in the present invention.

The left and right wings 7 are rotatably attached to the left and right beams 10 via a plurality of hinges 10a. The wing 7 has a two-foldable structure in which an upper side panel 7a and a lower side panel 7b are flexibly connected to each other by a hinge 7c.
"a" supports the base end side of the upper side panel 7a. At the front and rear ends of the wing 7, an upper side panel 7
A cylinder device as a driving means, specifically, a hydraulic cylinder 11 is interposed between a and the support member 9. The base end of each hydraulic cylinder 11 has a hinge 10a.
It is rotatably supported via a mounting pin 11a attached to the support member 9 at a position below (the center of rotation of the upper side panel 7a), and the rod tip is located on the tip side (near the hinge 7c) of the upper side panel 7a. They are connected (pivotally supported) via the pins 11b. That is, the pins 11a and 11b become the center of rotation of the hydraulic cylinder 11.

The hydraulic cylinder 11 is disposed so as to extend obliquely downward from the mounting pin 11a toward the outside of the cargo compartment when the wing 7 in FIG. 4 is closed. When the rod end extends by operating the hydraulic cylinder 11, the hydraulic cylinder 11
The wing 7 can be turned upward around the center a, and the whole wing 7 can be lifted above the hinge 10a (see FIG. 14). It is preferable to set the upper limit of rotation of the hydraulic cylinder 11 at a position before the upper side panel 7a stands upright in order to smooth the return operation.

Each of the above-mentioned hydraulic cylinders 11 is disposed at a position outside the cargo compartment, avoiding the rear frame 3 and the front frame 5.
Interference with the components (supports, crosspieces, panels, etc.) of these frames during rotation is avoided. In the present embodiment, the hydraulic cylinder 11 on the rear frame 3 side is configured to fit in a recess formed by the support 3a and the outer plate 3d when the wing 7 is closed, and the hydraulic cylinder 11 on the front frame 5 side.
Is also configured to fit in a recess formed by the front frame 5 and the outer plate 5d. Although not shown, each hydraulic cylinder 11 is connected to a hydraulic hose from a hydraulic unit disposed below the loading platform 2. The hydraulic unit and the above-described geared motor 9b are connected to a control panel (not shown), and drive each section in a predetermined procedure according to a command from the control panel.

The mounting structure and the arrangement of the hydraulic cylinder 11 are not limited to those shown in the figure, but may be appropriately adjusted according to the shape of the mounting portion so as to avoid interference between the hydraulic cylinder and the structure side during operation. A shaped mounting bracket can be used. Although illustration is omitted, an appropriate absorber is attached between the upper side panel 7a and the lower side panel 7b to prevent the lower side panel 7b from fluttering when the wing rotates.

Next, the roof 8 and its mounting structure will be described. The inside of the two beams 10, that is, the hinge 10
a number of hinges 1 on the surface opposite to the surface on which
0b are mounted in a line at a predetermined pitch, and these hinges 10b are connected to the left and right frames 8a, 8b of the roof 8.
Are supported so that they can be opened and closed.

FIG. 10 is a plan view showing the structure of the frames 8a and 8b. As shown in the figure, the frames 8a and 8b are both framed into a rectangular and flat shape having substantially the same size, and the central connecting portion of the frames 8a and 8b extends in the vehicle longitudinal direction of the frame 8a. The shaft 8c is inserted into the collar 8d of the frame 8b so as to be rotatable. Further, a spring member 8e as an urging means, specifically, a coil spring in this example is mounted on the shaft 8c, and the frames 8a and 8b are turned downward to be bent into a mountain shape (folded into two).
Biased in the direction. Further, the frame 8a is provided with an overhang 8f that protrudes in an eaves shape over the frame 8b at the connection portion. These frames 8a, 8b
Has a frame structure for weight reduction, but may be replaced with a plate-like structure.

A flexible sheet member 18 is attached over the frame members 8a and 8b to form a plate-shaped roof 8 that can be folded in half. That is, the roof 8 is composed of left and right roof panels 8A and 8B connected to bend and extend freely, and in this example, a single sheet is formed so that the connecting portions are simultaneously covered by the skins forming the surfaces of both roof panels 8A and 8B. Sheet material 18 is used. In some cases, the connecting portion may be covered by a flexible cover member different from the skin (sheet material) of the roof panels 8A and 8B.

FIGS. 11 to 13 show the roof panels 8A and 8A.
FIG. 4 is an enlarged cross-sectional view illustrating a relationship between a bent state of a roof 8 at a connection portion B and a sheet material 18. The sheet material 18 is attached so as to be substantially along the upper and lower surfaces of the overhang portion 8f, and the slack portion 18c is provided on the lower surface side of the overhang portion 8f.
(See FIG. 12). As shown in FIGS. 10 and 11, when the roof 8 (roof panels 8A and 8B) is opened substantially flat, the slack portion 18c of the sheet material 18 is folded and folded under the overhang portion 8f. On the other hand, when the roof panels 8A and 8B (the frame bodies 8a and 8b) stand up in a mountain shape, the length is set so that there is almost no slack. Further, the slack portion 18c of the sheet material 18 has a plurality of portions in the longitudinal direction,
c of a predetermined length attached so as to be wound around c
a, and when the roof panels 8A and 8B are opened substantially flat, the sheet material 18 is prevented from being excessive and the slack portion 18c is prevented from protruding from the overhang portion 8f.

As described above, since the bent portion of the roof 8 is covered with the single sheet material 18, it is not necessary to separately perform a waterproof process on the hinge portion. In addition, since a margin (slack portion 18c) added to the sheet material 18 to facilitate bending is configured to be folded under the overhang portion 8f, the sheet material 1
The seal structure at the front and rear ends of 8 is unnecessary or can be simplified,
There is no deterioration in appearance.

When the roof 8 is in a closed state (see FIG. 3), the center of the roof 8 is installed in a slightly inclined state. This is for facilitating the flow of rainwater and for facilitating the bending operation (described later) of the roof 8.

The left and right tilts 6 are supported by hinges 2b attached to the side of the loading platform so as to be rotatable in the vertical direction. These swings 6 are opened and closed manually.
In addition, 2a in the figure is the floor of the loading platform 2.

Next, the luggage room 1 provided with the above-described luggage room opening / closing device.
The operation of the opening / closing structure will be described with reference to FIGS. FIG. 3 shows a state in which the luggage compartment 1 is closed by the wing 7, the roof 8 and the swing 6. In order to open the luggage compartment 1, first, on one side of the luggage compartment 1, the front and rear two hydraulic cylinders 11 are operated almost simultaneously to extend each rod, and as shown in FIGS. Lift 7 slowly.

In the schematic diagram of FIG. 14, the hinge 1
0a, the mounting pin 11a, and the pin 11b, one side of a triangle (a line connecting the mounting pin 11a and the pin 11b) extends, thereby forming two sides of the triangle (the upper side of the hydraulic cylinder 11 and the wing 7 forming a link). It can be seen that the panel 7a) is smoothly lifted upward about the hinge 10a and the mounting pin 11a. The height position (head) of the rod end of the hydraulic cylinder 11 when the wing 7 is lifted is a position obtained by adding the length of the hydraulic cylinder 11 to the extension of the rod since the hydraulic cylinder 11 itself rotates upward. . In FIG. 6, FIG. 7, and FIG. 14, the rotation angle range is set smaller than 180 ° in order to ensure the reciprocating operation.

Separately from the upward rotation of the wing 7, it is a manual operation, and the lower side 6 is lowered (rotated downward) to open the side surface of the luggage compartment 1. The left and right wings 7 can be opened and closed independently. Since the sprocket 9c of the support member 9 is mounted on the shaft end on the worm wheel side, the sprocket 9c is prevented from rotating by the worm. Since the sprocket 9c does not move unless the worm rotates, the roof is inadvertently moved. 8 is prevented from moving.

When the roof 8 is obstructed by, for example, a cargo handling operation by a crane, one of the beams 10 is moved to the opposite side together with the wing 7 from the state shown in FIG. 7, and at the same time, the roof 8 is folded into a mountain shape. That is, the geared motor 9
When b is rotated in a predetermined direction, the sprocket 9c rotates on the chain 3e, and as the support member 9 travels, the distance between the left and right beams 10 is changed together with the support member 9, and the roof 8 is bent accordingly. exercise. Left and right beams 10
Can be arbitrarily adjusted by narrowing the interval of the roof 8 so as to fold the roof 8 into a mountain shape, or by increasing the interval to return the roof 8 almost flat. In this case, either of the right and left beams 10 may be moved at the same time or one of them may be moved at a time.

As described above, the driving wheels (sprockets 9c) forming a pair in the front and rear are connected by the connecting shaft (rotating shaft) 9d and rotate simultaneously, so that the support members 9 at both ends of the beam 10 move. Moves smoothly without time distortion. Also,
Since the geared motor 9b is provided for each support member 9, there is an advantage that the drive unit can be downsized.

FIGS. 11 to 13 are views for explaining the folding of the roof 8 step by step. As described above, the roof 8
Since the roof panels 8A, 8B are urged in the direction of bending in a mountain shape by the spring spring members 8e mounted on the frames 8a, 8b, the roof 8 can be folded (folded) with a relatively small driving force. This ensures the reliability of the operation. The state where the roof 8 is folded is shown in FIGS. 8 and 9.

When the roof 8 is to be returned to its original substantially flat state, the geared motor 9b is reversed to move the left and right beams 10 to both sides of the luggage compartment 1. At this time, a slack portion 18c is formed in the sheet material 18 with the rotation of the roof panels 8A and 8B, but when the roof panels 8A and 8B are opened, the surplus portion of the sheet material 18 becomes fold-like. It is folded under the overhang 8f and pressed. Therefore, infiltration of rainwater from both front and rear ends of the sheet material 18 covering the connecting portions of the roof panels 8A and 8B is prevented.

The opposite side of the luggage compartment 1 is also
In the same manner as described above, the wing 7 can be lifted and the roof 8 can be folded. Folded wing 7 and roof 8
May be located at the center of the luggage compartment 1 as shown in FIG.

As described in detail above, in the present embodiment, the front and rear frames 3, 5 are fixed to the loading platform 2, and in this state, the wings 7 are lifted above the loading compartment 1, and It can be moved to one side together with the roof 8. As described above, the loading platform 2 whose upper part is almost completely opened.
Will make it easier to handle cargo using cranes and forklifts. Since the rear frame 3 is fixed to the carrier 2, it is easy to secure strength and rigidity in combination with the gate shape, and it is possible to reduce the weight accordingly. In addition, since the rear frame 3 has a gate shape, the rear door 4 can be appropriately selected from a double door type and a shutter type that winds upward.

In this embodiment, the use of the hydraulic cylinder 11 allows the mechanism to be simplified and reduced in weight. Moreover, when the wing 7 is rotated, the rod tip of the hydraulic cylinder 11 supports the tip side of the upper side panel 7a, so that the support of the wing 7 is stabilized.
When the wing is in the closed position, the hydraulic cylinder 11 is turned downward, and the center of gravity is lower than when the wing is in the open position. The running characteristics of the vehicle can be improved.

[0034]

According to the present invention, there is an effect that the load room opening / closing mechanism for rotating the wing can be simplified and lightened.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a luggage compartment of a truck having an opening and closing structure according to an embodiment.

FIG. 2 is a perspective view of a luggage compartment with a wing lifted up.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is an enlarged view of a main part explaining the opening and closing structure shown in FIG. 3;

FIG. 5 is a partial side view of a luggage compartment showing a portion corresponding to FIG. 4;

FIG. 6 is a view for explaining the operation of the luggage compartment opening / closing structure.

FIG. 7 is a view for explaining the operation of the luggage compartment opening / closing structure.

FIG. 8 is a view for explaining the operation of the luggage compartment opening / closing structure.

FIG. 9 is a view for explaining the operation of the luggage compartment opening / closing structure.

FIG. 10 is a plan view showing the structure of a frame.

FIG. 11 is an enlarged sectional view illustrating an extended state of a center of a roof.

FIG. 12 is an enlarged cross-sectional view illustrating bending and stretching of the center of the roof.

FIG. 13 is an enlarged cross-sectional view illustrating a folded state of a roof center.

FIG. 14 is a schematic diagram illustrating a wing rotation mechanism using a hydraulic cylinder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Luggage room 7 Wing 7a Upper side panel 7b Lower side panel 8 Roof 9 Support body 10 Beam 10a Hinge 11 Hydraulic cylinder 11a Mounting pin 11b Pin

Claims (1)

[Claims] 1. A luggage compartment opening / closing mechanism for rotating a wing forming a side surface of a luggage compartment of a vehicle, wherein a wing and a cylinder device are respectively provided on a support member movably provided in an upper part of the luggage compartment in a vehicle width direction. The cylinder device is rotatably mounted up and down, and the center of rotation of the cylinder device is set at a position lower than the center of rotation of the wing, and the rod end of the cylinder device that extends diagonally downward rotates downward. And the luggage compartment opening and closing mechanism connected to the wing in the closed position.