JPH09142153A - Wing opening/closing device for wing vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wing opening/closing device for a wing vehicle to simplify structure and use a gas spring having excellent strength. SOLUTION: In a wing opening/closing device, a gas spring (h) is horizontally arranged on the upper frame materials of front and rear walls. An end part on the rod h2 side is pivotally supported on the upper frame material side and the end part of the cylinder h1 side and the lower end of a stopper 6 are intercoupled through a coupling rod 17. The coupling rod 7 is coupled to the end of the cylinder h1 and the lower end of the stopper 6 through shaft pins 19 and 22 and the shaft pins 19 and 22 are laterally slidably supported in a lateral long guide slits 13 and 20 horizontally arranged at brackets 7 and 8 to which the gas spring (h) is horizontally attached. Expansion/contraction movement of the rod h2 of the gas spring (h) is converted into lateral slide movement of the coupling rod 17, and further, slide movement of the coupling rod 17 is converted into rise and fall movement of a wing (c) through the stopper 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical opening and closing roof having an L-shaped cross section which is hung between a front wall and a rear wall which are erected in front of and behind a luggage carrier of a truck to integrally cover a roof portion and a side wall portion. The present invention relates to a so-called roof opening / closing device for a wing vehicle, and particularly to a roof opening / closing device for opening a roof upward by the elastic force of a gas spring.

[0002]

2. Description of the Related Art FIG. 1 shows an example of a known wing vehicle. In FIG. 1, a is a front wall and b is a rear wall provided with a double door.
c is a wing provided on the upper frame member d ₁ or d ₂ of the front wall a and the rear wall b so as to be vertically openable and closable. The wing c has a roof portion c ₁ and a side wall portion c ₂ and has an L-shaped cross section. Generally, when closed, the wing c is watertightly overlapped with the top portion of the fan e provided on the side of the cargo bed to form the side wall portion. Is completely sealed. The hydraulic cylinders f ₁ and f ₂ are mounted on the top frame members d ₁ and d ₂ of the front wall a and the rear wall b, and the wings c are opened and closed by expanding and contracting the rods g ₁ and g ₂ .

In addition to the hydraulic cylinder f shown in FIG. 1, an electric motor can be used as a driving means for opening and closing the wings c of this type of freight vehicle. Also, for relatively lightweight hood and small wing cars, coil springs,
There are some that open and close manually by using only the elastic force of the spring such as a shovel or a gas spring. There is also a compound type opening / closing device in which the spring or the like is used as an auxiliary driving means for a hydraulic cylinder or an electric motor. Among them, the gas spring has a smaller spring constant than a coil spring, so that it generates a substantially constant repulsive force over a long compression stroke and appropriately controls the speed of expansion and contraction.
Therefore, it is suitable as a drive device for such a wing vehicle.

An example in which a gas spring is used as an auxiliary driving means for a relatively heavy wing c is an actual flat blade 7-58.
No. 57 is disclosed. In addition, an example used as a driving means for a manual opening / closing operation is the actual Kaihei 5-35563.
No. 6,086,045.

By the way, such a gas spring is
Generally, it is used for a relatively lightweight opening / closing body such as a hatch door of a passenger car, a door of a trunk room or an engine hood. It is used in various fields such as wing opening and closing devices for cars.

However, when a gas spring is used in the wing opening / closing device of a wing vehicle, it has a drawback that it is easily damaged when subjected to a bending load. FIG. 2 is a view showing the principle of opening / closing of the wings c as the rod h ₂ expands / contracts in a conventional opening / closing device using a gas spring h as a driving means. Reference numeral c ₁ is a roof portion of the wing c, and c ₂ is a side wall portion of the wing c which is continuous with the roof portion. The wing c is pivotally supported at one end of the roof portion c ₁ so as to be vertically rotatable by a pivot pin i. The gas spring h is
It is composed of a cylinder h ₁ and a rod h _2. One end of the cylinder h ₁ is on the top frame member d ₁ or d ₂ of the front wall or the rear wall, and the end of the rod h ₂ is a side frame member of the wing c. Each is pivoted. Is assisting the main driving force, not shown, the rod h ₂ that has been energized upward begins to shrink, wings c is pulled downward, in a state where the rod h ₂ is contracted, the gas spring h is the top frame It descends in the direction of the material d ₁ or d ₂ and closes the wing c. In such a mounting structure, the gas spring h always receives the load of the wing c in a tilted state as shown in the figure, so that as the wing c becomes larger, the bending moment becomes larger and larger.

When the gas spring h is used as shown in FIG. 2, when the wing c is opened, it receives a large bending moment as described above, which is a problem when it is used for a heavy-weight opening / closing body. . Even if the gas spring h is used as an auxiliary driving means for the wings, if it is used in a conventional mounting structure such as the hydraulic cylinder of FIG. 1, the weight of the wings c increases and the gas spring h is excessively bent. -A trouble occurs that the gas spring is damaged and the gas spring is damaged.

[0008] Therefore, the applicant of the present invention repeatedly studied to solve the trouble of the gas spring in the flip-up door of the shipping container, and invented and disclosed one of the solutions in Japanese Patent Application No. 7-213282. .

[0009]

DISCLOSURE OF THE INVENTION The present invention further improves a gas spring as a wing opening / closing driving means in a wing vehicle so that it can be opened / closed more smoothly, is lightweight and has a simple structure. An object is to provide a wing opening / closing device for a wing vehicle that uses a gas spring having excellent strength.

[0010]

In a wing opening / closing device for a wing vehicle having an L-shaped roof in which a roof part and a side wall part of a luggage box are integrated, a front wall a and a rear wall erected on front and rear parts of a luggage carrier. The gas spring h is installed horizontally on the upper frame members d ₁ and d _{2 of} b, and the rod h ₂ of the gas spring h is pivotally supported on the upper frame members d ₁ and d ₂ side to expand and contract the gas spring h. The movement is transmitted from the connecting rod 17 to the frame member 5 of the wing c via the stopper 6, and both ends of the connecting rod 17 are the end of the cylinder h _{1 of the} gas spring h and the stopper 6.
Connected to the lower end with shaft pins 19 and 22, respectively.
The reference numerals 9 and 22 are slidably inserted laterally into guide slits 13 and 20 horizontally elongated in brackets 7 and 8 fixed on the upper frame members d ₁ and d ₂ , respectively, and rods of the gas spring h. The expansion / contraction motion of h ₂ is changed to the lateral sliding motion of the connecting rod 17, and the sliding motion of the connecting rod 17 is converted into the undulating motion of the wing c via the stopper-6.

A cross section L in which the roof and the side wall of the luggage box are integrated
In a wing opening / closing device for a wing vehicle having a roof of a type, upper frame members d ₁ and
A gas spring h is installed horizontally on d ₂ , a rod h ₂ of the gas spring h is pivotally supported on the upper frame members d ₁ and d ₂ , and a cylinder-h _{1 of} the gas spring h installed horizontally.
A pulley 28 is provided at the end, a wire 29 is wound around the pulley 28, one end of the wire 29 is fixed onto the upper frame members d ₁ and d ₂ , and the other end is fixed to the wing c side frame member 5. Stopper 6 with the upper end pivotally supported
A guide slit which is fixed to a shaft pin 22 attached to the lower end of the shaft pin 22, and which is provided on the bracket 7 on the upper frame members d ₁ and d _2.
The gas spring h is supported so as to be slidable in the lateral direction in 30 so that the expansion / contraction motion of the rod h ₂ of the gas spring h is transmitted from the pulley 28 to the wire 29 and the shaft pin 22.
And, it is converted into the undulating motion of the wing c via the stopper-6.

The shaft pins 19 and 22 are mounted via sliders 14 and 21 slidably supported in the guide slits, and are constituted by roller shafts. .

Section L in which the roof and side wall of the luggage box are integrated
In a wing opening / closing device of a wing car having a roof of a type, an upper frame member d of a front wall a and a rear wall b which are erected on the front and rear portions of the loading platform.
_1, d ₂ and the cylinder h ₁ end of the gas spring h that pivot rod h ₂ end on, connecting the lower end of the stopper-6 pivotally supported to the upper end to the frame member 5 of the wing c in connecting rod 35, Further, both ends of the connecting rod 35 are connected to the upper ends of the first lift arm 33 and the second lift arm 34 having the same length as the first lift arm 33 whose lower ends are pivotally attached to the upper frame members d ₁ and d ₂ , respectively. A parallelogram linkage mechanism is formed so that the expansion / contraction movement of the gas spring h is transmitted to the stopper-6 via the parallelogram linkage mechanism and converted into the undulation movement of the wings c.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows an example of a switchgear using a gas spring according to the present invention. As shown in the drawing, a wall plate 1 is provided along the front edge of the upper frame member d ₁ or d ₂ (the drawing shows the portion of the upper frame member d ₁ ) and the flat plate A switchgear is mounted on the top surface 2. A support bracket 3 is provided at the center of the top surface 2 of the upper frame member d _1.
Are fixed by welding or the like, and rotatably support the left and right wings c via pivot pins 4 provided on the support bracket 3. One opening / closing device is mounted on the top surface 2 with the support bracket 3 as a center, and the opening / closing devices are attached to the frame member 5 of the wing c.
Each wing c is rotated via the stopper 6 having one end connected to the.

The structure of the switchgear is as follows. A long bracket 7 having an L-shaped cross section and a short bracket 8 having an L-shaped cross section are attached in parallel along the top surface 2 of the upper frame member d ₁ (one long bracket may of course be used. ). The gas spring h includes a shaft hole 9 having a rod h ₂ bored at its end and a shaft hole 11 bored in a support piece 10 provided at the end of the horizontal portion 7 a of the long bracket 7.
The rod side is pivotally supported by the pin 12 inserted in the. A vertical guide 7b (FIG. 3 (b)) of the long bracket 7 is provided with a first guide slit 13 along its longitudinal direction, and a first guide slider 14 is slidable in the slit 13. It is supported.

The cylinder h ₁ side of the gas spring h is slidably fitted in a shaft hole 15 provided at the end of the cylinder h ₁ and a first guide slit 13 provided in the elongated bracket 7. The pin 1 penetrating into the shaft hole 16 of the first guide slider 14 and the shaft hole 18 provided at the end of the connecting rod 17.
It is connected to the connecting rod 17 by 9. Similarly, the vertical portion 8b of the short bracket 8 is also provided with a second guide slit 20 which is transparently provided along the longitudinal direction thereof.
A second guide slider -21 which is movable in the longitudinal direction is slidably fitted in the guide slit 20. The connecting rod 17 and the stopper 6 are pivotally supported by a pivot pin 22 with the guide slider 21 interposed therebetween.

The stopper 6 is pivotally supported at its upper end by a support piece 23 provided on the frame member 5 of the wing c via a shaft pin 24 (FIGS. 3 and 4). The gas spring h is installed parallel to the vertical portion 7b of the long bracket 7 having an L-shaped cross section, and both ends thereof are connected by the pins 12 and 19 as described above. 25 is an annular retainer secured by bolts or the like to the vertical portion 7b of the bracket 7, contrary to loosely fit the cylinder h ₁ of the gas spring h, bending caused by the extension of the rod h _2, gas spring It supports h horizontally.

First and second guide sliders-14 and 21
Is the first guide slit 13 and the second guide slit 2 thereof.
Although not shown, a bearing can be interposed so that the friction when moving along 0 can be reduced to allow smooth sliding. Further, the sliding resistance can be further reduced by forming the pin 19, the shaft pin 22 and the like as roller pins.

With this configuration, when the rod h ₂ of the gas spring h expands and contracts, the connecting rod 17 slides in the longitudinal direction via the pin 19 and the first guide slider-14. Then, the second guide slider -21 also slides in conjunction with each other to open and close the wing c vertically via the shaft pin 22 and the stopper-6.

FIG. 5 is a conceptual diagram of the operation of the switchgear using the gas spring h described above. In FIG. 5, the wing c opens and closes around the pivot pin 4 forming the center of rotation. Front wall a
If a center beam spans between the rear wall b and
A hinge pin hinged to the center beam, or a pivot pin inserted into a support bracket 3 projecting on the top surface of the upper frame member d ₁ shown in FIG. 3 when the center beam is not provided It is 4.

In the conceptual view of FIG. 5, the long bracket 7 and the short bracket 8 are omitted, and the first and second guide slits 1 are provided.
Only 4,21 are shown. The end on the rod h ₂ side is pivotally supported by a support piece 10 provided on the top of the upper frame member d ₁ via a pin 12. As the rod h ₂ expands and contracts, the end portion of the cylinder h ₁ side together with the connecting rod 17 forms the first guide slit 1
3, the lower end of the stopper 6 connected to the other end of the connecting rod 17 slides in the second guide slit 20 at the same time. Then, the pivot pin 2 is attached to the upper end of the stopper-6.
The wings c connected by 4 will open upward.

In FIG. 5, the solid line shows the positional relationship between the wing c when closed and each main member of the switchgear, and the two-dot chain line shows the positional relationship between the wing c and the gas spring h when opened. 26
The stopper 6 is a wing c inside the second guide slit 20.
Is a stop for moving the wing c toward the center of rotation and holding the wing c in an open state. The stop has a function of preventing backward movement when passing through the top of the stop 26, and the wing c tries to close. At this time, the lever connected to the lower part of the bed via a linkage rod (not shown) can be operated to release the locked state. Stop 26 is spring 2
7, it is always urged in the upward protruding direction.

FIG. 6 shows an example of a switchgear in which two gas springs h are connected in series and mounted. In this example, since the stroke of the gas spring h is doubled,
The mounting position of the support piece 23 (FIG. 3) of the shaft pin 24 on the wing c side can be moved away from the center of rotation of the wing c. Therefore, the wing c can be easily opened accordingly. Reference numeral 25 in the drawing denotes a holder for supporting the gas spring h in a horizontal state against bending in the bending direction caused by the extension of the rod h ₂ . Besides, if the brackets are interposed between the two gas springs h on the top portion of the upper frame member d ₁ and arranged in parallel, the repulsive force of the gas springs can be doubled.

Still another example will be described with reference to FIG. In this example, a shaft that supports the pulley 28 is extended at the end of the gas spring h on the cylinder h ₁ side, and the pulley 28 is used as a moving pulley. As shown, the upper frame member d
_The wire 29 fixed to ₁ is wound around the pulley 28, and the other end is fixed to the shaft pin 22 guided by the elongated slit 30. When the rod h ₂ extends, the pulley 28 and the wire 2
9. The stopper 6 can be directly pulled via the shaft pin 22 and converted into the undulating movement of the wing c. Pulley 28
As a result, the stroke of the rod h ₂ can be doubled, and the length of the stopper 6 can be lengthened accordingly, so that the opening / closing device itself is placed outside (on the side of the top of the upper frame member d ₁ ) ), The position of the support piece 23 provided on the frame member of the wing c can be moved away from the pivot pin 4.

Furthermore, another example is shown in FIG. In this example, the gas spring h is a front wall a that is erected on the front and rear parts of the loading platform.
The rod end is pivotally supported on the upper frame members d ₁ and d _{2 of the} rear wall b. The expansion and contraction of the gas spring h is transmitted to the stopper 6 by a parallelogram link mechanism. This parallelogram linkage has a first lift arm 33 and a second lift arm 34 whose lower ends are pivotally attached to the tops of the upper frame members d ₁ and d ₂ by pin shafts 31 and 32, and the upper ends thereof. Both ends are configured with a connecting rod 35 pivotally attached by shaft pins 36 and 37, respectively. Then, the cylinder end of the gas spring h is pivotally attached to the first lift arm 33 (in the example of the figure, it is pivotally attached by the pin shaft 36). When the gas spring h extends, the first lift arm 33 rotates around the pin shaft 31 as shown by the chain double-dashed line in FIG. Then, the connecting rod 3 that constitutes the top of the parallelogram by the pin 36
Slide 5 horizontally. Then, the stopper 6 connected by the connecting rod 35 and the shaft pin 37 is moved to open the wing c.

[0026]

As described above, the gas spring h is expanded and contracted while it is held horizontally, and the stopper 6 having high rigidity receives a relatively large load such as the wing c, and the gas spring h receives only the axial load. Since it is configured to receive, troubles such as damage due to bending moment can be eliminated. Also, two gas springs h are provided in series to double the stroke, or a pulley is provided at the end of the cylinder and the wire is wound around this to double the stroke, and the stopper 6 is winged. Since the point of action that pushes up c can be moved away from the center of rotation of wing c, wing c can be released more easily. Further, since the parallelogram linkage mechanism is used to transmit the expansion and contraction movement of the gas spring h, the sliding portion can be reduced and the wing c can be smoothly opened. . With this configuration, the elastic force of the gas spring h can be used efficiently and with peace of mind, and a smooth opening and closing operation of the wing can be performed. As a result, the gas spring can sufficiently cope with the increase in size of the wing. It is possible to provide a switchgear using the.

[Brief description of the drawings]

FIG. 1 is a perspective view of a known wing vehicle of a type that is opened and closed by a hydraulic cylinder to support a wing between a front wall and a rear wall.

FIG. 2 is a conceptual diagram showing an opening / closing mechanism when the wings are opened / closed by a gas spring.

FIG. 3 is a perspective view of an opening / closing device using the gas spring of the present invention.

FIG. 4 is a plan view of the opening / closing device shown in FIG.

FIG. 5 is a conceptual diagram showing an open / closed state of a wing by one gas spring.

FIG. 6 is a conceptual diagram showing an open / closed state of two gas springs provided in series by wings.

FIG. 7 is a conceptual diagram showing an open / closed state of a wing by a gas spring provided with a movable pulley.

FIG. 8 is a conceptual diagram showing an open / closed state of a wing by a gas spring provided with a parallelogram linkage mechanism.

[Explanation of symbols]

a front wall b rear wall c wing c ₁ roof part c ₂ side wall part d ₁ , d ₂ upper frame material e fan f ₁ , f ₂ hydraulic cylinder g ₁ , g ₂ rod h gas spring h ₁ cylinder h ₂ rod i pivot Pin 1 Wall plate 2 Top surface 3 Bracket 4 Pivot pin 5 Frame material 6 Stopper 7 Bracket 7b Vertical part 8 Short bracket 8b Vertical part 9 Shaft hole 10 Support piece 11 Shaft hole 12 Pin 13 Guide slit 14 Slider-15 Shaft hole 16 Shaft hole 17 Connecting rod 18 Shaft hole 19 Pin 20 Guide slit 21 Slider-22 Shaft pin 23 Support piece 24 Shaft pin 25 Retainer 26 Stopper 27 Spring 28 Pulley 29 Wire 30 Slender slit 31 Pin shaft 32 Pin shaft 33 Lift arm 34 Lift arm 35 Connecting rod 36 Shaft pin 37 pin

Claims (4)

[Claims] 1. A wing opening / closing apparatus for a wing vehicle having an L-shaped roof in which a roof part and a side wall part of a luggage box are integrated with each other. ), The gas spring (h) is installed horizontally on the upper frame member (d ₁ , d ₂ ),
The rod (h ₂ ) of the gas spring (h) is connected to the upper frame member (d ₁ ,
It is pivotally supported on the d ₂ ) side, and the expansion and contraction movement of the gas spring (h) is extended from the connecting rod (17) through the stopper (6) to the frame material of the wing (c).
The connecting rod (17) has a structure adapted to be transmitted to (5).
Both ends of the gas spring (h) are connected to an end of the cylinder (h ₁ ) of the gas spring (h) and a lower end of the stopper (6) by shaft pins (19, 22), respectively, and the shaft pins (19, 22) are connected to the upper frame member. The brackets (7, 8) fixedly mounted on (d ₁ , d ₂ ) are horizontally slidably inserted into guide slits (13, 20),
The expansion and contraction movement of the rod (h ₂ ) of the gas spring (h)
Change to the lateral sliding motion of the connecting rod (17), and further
A wing opening / closing device for a wing vehicle, characterized in that the sliding motion of (7) is converted into the undulating motion of the wing (c) via a stopper (6). 2. A wing opening / closing device for a wing vehicle having a roof having an L-shaped cross section in which a roof part and a side wall part of a luggage box are integrated with each other.
The gas spring (h) is installed horizontally on (d ₁ , d ₂ ), and the rod (h ₂ ) of the gas spring (h) is attached to the upper frame member (d ₁ ,
The pulley (28) is provided at the cylinder- (h ₁ ) end of the horizontally installed gas spring (h) pivotally supported on the d ₂ ) side, and the wire (29) is wound around the pulley (28). Connect one end of the wire (29) to the upper frame
A frame member fixed on (d ₁ , d ₂ ) and the other end on the wing (c) side
A stopper (6) is pivotally supported on (5) and is fixedly attached to a shaft pin (22) attached to the lower end of the stopper (6), and the shaft pin (22) is attached to the bracket on the upper frame member (d ₁ , d ₂ ). Guide slit provided in (7)
Gas spring (h) is supported in (30) so that it can slide laterally.
The telescopic movement of the rod (h ₂ ) of the
9), the shaft pin (22) and the stopper (6), and the wing (c)
A wing opening / closing device for a wing vehicle, which is adapted to be converted into the undulating movement of the wing. 3. The shaft pin (19, 22) is mounted via a slider (14, 21) slidably supported in the guide slit, and comprises a roller shaft. The wing opening / closing device for a wing vehicle according to claim 1 or 2. 4. A wing opening / closing device for a wing vehicle having a roof having an L-shaped cross section in which a roof part and a side wall part of a luggage box are integrated with each other. b) Cylinder (h ₁ ) end of gas spring (h) having rod (h ₂ ) end pivotally supported on upper frame member (d ₁ , d ₂ ) and wing (c) frame member
A stopper that pivotally supports the upper end to (5) and the lower end of (6) is a connecting rod.
A first lift arm (33) which is connected by (35) and further has both ends of the connecting rod (35) pivotally attached to the upper frame members (d ₁ , d ₂ ) at their lower ends, and an equal length to this. Of the second lift arm (34) is connected to form a parallelogram link mechanism, and the expansion / contraction motion of the gas spring (h) is transmitted to the stopper (6) via the parallelogram link mechanism. A wing opening / closing device for a wing vehicle, characterized in that the wing (c) is converted into an undulating motion.