JP3242066B2 - Lifting device for packing box door of van type truck - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door flip-up device, and more particularly to a package door flip-up device for a van type truck.

[0002]

2. Description of the Related Art FIGS. 16 and 17 are external views of various van-type trucks. FIG. 16 shows that a rear door of a packing box and FIG. Thereby, the packing box is opened. 2. Description of the Related Art Conventionally, a packing box main body and a gas damper connected to the packing box door are mounted inside the packing box as a packing box lifting device. In addition, the present inventors have proposed in Japanese Patent Application No. 9-365729 a packing box door flip-up device of a type to be mounted on the roof of a packing box door.

[0003]

However, the conventional box door flip-up device using a gas damper has a problem that gas leaks frequently occur from the gas damper, resulting in low durability and high cost.

[0004] In addition, in the case of a packing box flip-up device that is mounted on the roof of a packing box door proposed by the present inventors in Japanese Patent Application No. 9-365729, the vehicle height is increased by the height of the flip-up device. Due to legal restrictions on the vehicle height, there is a case where the height of the packing box must be reduced by installing this type of flip-up device, and as a result, the packing box volume is reduced. In addition, when the height of the cargo entrance is low, there is a possibility that a van-type truck provided with this type of flip-up device cannot enter.

[0005] It is an object of the present invention to provide a cargo box door flipping device of a van type truck which has high durability and can secure a large cargo box volume.

[0006]

The present invention has the following items from each viewpoint. First viewpoint: One end of the arm A is pivotally mounted inside the packing box door. The other end of the arm A is connected to one end of the arm B. The other end of the arm B is pivotally supported in the packing box toward the packing box. One end of the rod is connected to the intermediate portion of the arm B. The other end of the rod is pivotally supported by the middle part of the lever. One end of the lever is pivotally supported in the packing box toward the packing box. One end of the shaft was connected to the other end of the lever. The elastic means is connected to the other end of the shaft and is elastically mounted between the other end of the shaft and a member fixed to the body side of the packing box. An elastic member which expands and contracts by the rotation and stroke of the shaft accompanying the opening / closing operation of the packing box door, and generates a moment for urging the packing box door in the opening direction.

[0007] A second viewpoint: a stopper member that defines the maximum opening degree of the packing box door by abutting on the lever and locking the lever at a predetermined pivot position of the lever. Third viewpoint: a protruding portion that comes into contact with the stopper member at a predetermined pivot position is provided near the other end where the shaft of the lever is connected. Fourth viewpoint: means for fixing the stopper member so that the mounting position of the stopper member can be displaced along the pivot direction of the lever.

Fifth viewpoint: a sealing member is provided between the side edge of the packing box door and the opening edge of the packing box. A relief portion is provided in the mechanism for pivotally connecting one end of the arm A to the inside of the packing box door, so that a portion where the sealing member projects from the packing box door to the inside of the packing box is released.
By this escape portion, the entire lifting device including the pivoting mechanism of the arm A and located inside the packing box can be moved toward the packing box end side (for example, the packing box side wall) while avoiding the inner projecting portion of the seal member. Thus, the effective volume of the packing box is enlarged. Sixth viewpoint: The entire device is placed in the packing box. One end of the arm A is pivotally mounted inside the packing box door. The other end of the arm A is connected to one end of the arm B. Arm B
Is pivoted to the packing box side in the packing box. One end of the rod is connected to the intermediate portion of the arm B. The lever was pivoted to the packing box. The other end of the rod is pivotally supported on one side and the other end of the shaft is connected on the other side with a pivot point between the lever and the packing box side interposed therebetween. The elastic means is connected to the other end of the shaft and is elastically mounted between the other end of the shaft and a member fixed to the body side of the packing box. The elastic means expands and contracts by the rotation and stroke of the shaft accompanying the opening and closing operation of the packing box door, and generates a moment for urging the packing box door in the opening direction. Seventh viewpoint: Having a link system mainly composed of the arm A, the arm B, the rod, the lever, and the shaft, and linking the packing box door and the elastic means arranged in the packing box.
One end of the arm A is pivotally mounted inside the packing box door. The other end of the arm A is connected to one end of the arm B. Arm B is pivotally supported in the packing box toward the packing box. The arms A and B rotate toward the outside of the packing box when the packing box door is opened. The lever is located in the packing box and pivoted to the packing box side. Lever is arm A and arm B
That was connected to the packing box door. The shaft shall stroke while pivoting the lever slightly when the packing door is opened. The elastic means is connected to the other end of the shaft and is elastically mounted between the other end of the shaft and a member fixed to the body side of the packing box. The elastic means expands and contracts by the rotation and stroke of the shaft accompanying the opening and closing operation of the packing box door, and generates a moment for urging the packing box door in the opening direction. Eighth viewpoint: a spring for storing the spring in the carton
Cover is fixed fixed member fixed, the urging force of the spring
To the packing box door that pivots to the packing box via the link system
Moment acting in the direction to open the packing box door
The cargo box doors for vehicles configured to generate
Lifting device. A fixing member is arranged inside the packing box.
Was it. Link system at the first part on the back side of the packing box door
An arm A to be pivotally connected, and a second part of the arm A
Arm B pivotally attached to the
A rod pivotally attached at one position and a second
A lever pivotally attached at one position and a pivot at the second part of the lever
And a shaft to be supported. Arm B and lever
Were pivotally attached to the packing box at the third position.
The shaft is stroked in the axial direction by the action of the spring
To be configured to

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The lifting device of the packing box door according to the present embodiment is disposed inside the packing box and attached between the inner wall of the packing box of the van type truck and the rear packing box door.

FIG. 1 is a side sectional view of a van type truck flip-up device according to an embodiment of the present invention, and FIG. 2 is a view of the device of FIG. 3 to 5 are operation views of the apparatus shown in FIG. 1, FIG. 3 is a side view showing a state where the packing box door is fully opened, and FIG. 4 is a rear view of FIG.
FIG. 5 is an external view when the packing box door 30 is opened by about 45 °. 6 to 12 are enlarged views of each part shown in FIG. 13 and 14 are component diagrams.

Hereinafter, the structure of the device according to this embodiment will be described. Referring to FIG. 1, one end (the first end) of an arm A1 is provided inside a packing box door 30 via a bracket mechanism (a pivot mechanism) 15 .
Part) is pivoted. The other end of the arm A1 (second part
Position) is at one end (first portion) of the arm B2 via the pin 31.
It is connected to. The other end (third portion) of the arm B2 is pivotally supported via a pin 32 to a fixing member 9 fixed to the packing box body side. One end (first part) of the arc-shaped rod 3 is connected to an intermediate part (second part) of the arm B2 via a pin 33. The other end (second portion) of the arc-shaped rod 3 is connected via a pin 35 to an intermediate portion (second corner , second end ) of the triangular lever 4 .
(Partial position ) 4b. One end of lever 4 (first
The corner portion (third portion ) 4 a is pivotally supported by the fixing member 9 via the pin 34. The other end of the lever 4 (third corner , second part
One end of the shaft 5 is rotated via the pin 36 at the position 4c.
And are connected (pivotally supported) to allow a stroke . The shaft 5 passes through a coil spring 7 housed in a spring cover 8 fixed to a fixing member 9. In the spring cover 8, a spring seat 6 is bolted (screwed) to the other end of the shaft 5 along the axial direction of the shaft 5 so that its mounting position can be adjusted. The coil spring 7 includes a spring seat 6
And the inner surface of the spring cover 8. As shown in FIG. 5, the entire flip-up device is housed in a device cover 43 fixed to the side wall of the packing box, and even when a large amount of load is loaded, interference between the mechanism (moving part) of the flip-up device and the load. Has been prevented. FIG. 14 is an enlarged view of the device cover 43 as viewed from below in FIG.

Next, details of each member will be described. Referring to FIGS. 2 and 12, fixing member 9 includes a pair of parallel plates 9a and 9b having surfaces extending in a vertical direction, and a packing box ceiling-side mounting plate 9c having a surface extending in a horizontal direction.
The packing box side wall-side mounting plate 9d is integrated.
The packing box ceiling side mounting plate 9c includes bolts 38a, 38b attached to members extending downward from the packing box ceiling in the packing box.
It is fixed by. Packing box side wall mounting plate 9
d is a mounting plate 40 (FIG. 1) extending in the vertical direction.
3) is fixed to the inner wall of the packing box by bolts 39a and 39b. And a pair of parallel plates 9
The other ends of the lever 4 and the stopper member 11 are located between a and 9b. The spring cover 8 is located below the packing box side wall mounting plate 9d (see FIG. 1).

The arm A1 is a plate-shaped arm, and has a cylindrical portion for receiving the pivot pin 17 at one end of the arm, and a forked portion through which the pin 31 is inserted at the other end of the arm (FIG. 8).
reference). The arm B2 is a bent plate-like arm, and a cylindrical portion for receiving the pin 31 is provided at one end of the arm (see FIG. 8), and has a bifurcated shape from the arm intermediate portion to the other end. An arcuate rod 3 enters the intermediate fork of the arm B2, and a pin 3 is inserted between the intermediate fork and the arcuate rod 3.
3 (see FIG. 9), the other fork of the arm B2 enters the fork of the fixing member 9, and the pin 32 is inserted between the other fork of the fixing member 9 and the fork of the fixing member 9. It is inserted (Fig. 10
reference).

The arc-shaped rod 3 is curved so as to avoid the pin 32 located at the other end of the arm B2, and one end of the arc-shaped rod 3 is connected to the intermediate portion of the arm B2 as described above. The end penetrates between the levers 4 consisting of a pair of parallel plates, and the middle part of the levers 4 ( the pivot points of the levers 4).
, And is pivotally supported via a pin 35 on one side ( second corner) 4b. One end of lever 4 ( the pivot point of lever 4, the first
The corner 4a is pivotally supported by the fixing member 9 via a pin 34.

The other end of the lever 4 (with the pivot point of the lever 4
On the other side ( third corner) 4c, one end of the shaft 5 enters between a pair of plates forming the lever 4, and the pin 36 is inserted into the other end 4c of the lever 4 and one end bearing portion of the shaft 5. (See FIG. 11). The spring cover 8 is cylindrical, and an opening is formed on one end surface of the spring cover 8 to allow rotation and stroke of the shaft 5, through which the shaft 5 enters the spring cover 8. are doing. An opening for allowing the rotation and the stroke of the shaft 5 is also formed on the other end surface of the spring cover 8.

Next, a door opening setting mechanism will be described.
FIG. 6 is an enlarged view of the door stopper mechanism shown in FIG. With reference to FIGS. 1 and 6, a door stopper mechanism 10 is provided above the fixing member 9. In a door stopper mechanism 10, a key-shaped stopper member 1 is disposed between a pair of plates 12 and 13 fixed or integrated with a fixing member 9.
1 is clamped, and bolts 14a and 14b are communicated with mounting holes (for example, formed as long holes) formed in the stopper member 11 and the pair of plates 12 and 13 to be tightened. The member 11 is fixed to the fixing member 9 side. The diameter of the mounting hole formed in the stopper member 11 is larger than the diameter of the bolt, and the mounting position of the stopper member 11 can be adjusted back and forth (along the pivoting radial direction of the lever 4). The other end of the stopper member 11 extends toward the shaft 5. On the other hand, in the vicinity of the other end (third corner) 4c of the lever 4, a protrusion 4d is provided. When the packing box door 30 is rotated,
The maximum opening of the packing box door 30 is defined by the locking of the protrusion 4d of the lever 4 to the stopper surface 11a.

Subsequently, referring to FIGS. 1 and 2, the arm A1
The bracket mechanism 15 for pivoting the bracket to the packing box door 30 will be described. A pair of plates 19, 20 are provided with the packing box door 30 interposed therebetween, and the pair of plates 19, 20 are fixed to the packing box door 30 by bolts 21a, 21b, 21c, 21d. On the inner surface of the plate 19 inside the packing box door 30, a plate 18 fixed to or integrally formed with the plate 19 is provided. A plate 16 having a curved portion is fixed or formed integrally with the plate 18, and a pivot pin 17 of the arm A1 is received between the curved portion of the plate 16 and the plate 18.

Here, with the packing box door 30 interposed therebetween, the inner plates 16, 18, 19 and the pivot pin 17 of the arm A1,
The difference in the horizontal mounting position between the outer plate 19 and the outer plate 19 will be described in detail. FIG. 2 is a view of the flip-up device viewed from the outside with the packing box door 30 removed. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 1, and is a view of the packing box door 30 as viewed from above. Referring to FIGS. 1, 2 and 7,
The packing box door 30 is attached to the upper edge of the packing box opening via a hinge 37. The hinge 37 has a portion that projects horizontally from the side edge of the packing box door 30. Further, when the packing box is closed, a sealing member (seal rubber, H) is provided on the side edge of the packing box door 30 and / or the packing box opening side edge so that the packing box is sealed.
Rubber, packing, etc.) 41 is attached. The plate 20 outside the packing box door 30 includes a sealing member 41.
Is attached to the center side of the packing box door 30 so as to avoid the projecting portion. On the other hand, inside the packing box door 30, a sealing member 41 is provided.
An escape portion 42 for accommodating the inside overhang portion is formed. Specifically, the plate 19 inside the packing box door 30 is
Is retracted to the center side of the packing box door 30 by the amount that the sealing member 31 projects inward, and the plate 18 is
It is closer to the opening edge of the packing box. And plate 18
The seal member 31 is provided in the escape portion 42 surrounded by the
The inside overhang is accommodated. The plates 16 and 18 inside the packing box door 30 do not face the outer plate 20 but are mounted closer to the packing box inner wall side than the plate 20. As a result, the entire lifting device inside the cargo box, including the pivot pin 17 and the arm A1 supported between the plates 16 and 18, is mounted closer to the inner wall side of the cargo box. As a result, the effective volume of the cargo box in which the cargo can be substantially loaded is increased.

The operation of the above-described flip-up device will be described.
Referring to FIGS. 1, 3 and 5, the packing box door 3 is operated by operation.
When 0 is rotated, the arms A1 and B2 rotate outwardly of the packing box, and the arc-shaped rod 3 rotates upward in FIG. As a result, the lever 4 pivots counterclockwise in FIG. 1, and furthermore, the shaft 5 connected to the lever 4 slightly strokes counterclockwise in FIG. By the stroke of the shaft 5 toward the back of the packing box, the coil spring 7 is expanded and the stored elastic energy is released, and acts in a direction to further pivot the lever 4, that is, a direction to further open the packing box door 30. A moment is generated. After the packing box door 30 is manually opened to a predetermined opening, the packing box door 30 is sprung up by itself by this moment. The spring seat 6
By adjusting the mounting position of the coil 7 on the shaft 5, the elastic energy lost by the coil 7 and the packing box door 30
Can be adjusted, and the packing box door 30 jumps up by itself from a predetermined opening degree.

FIG. 5 shows a state where the packing box door 30 is opened by about 45 °, and FIG. 3 shows a state where the packing box door 30 is flipped up to the maximum. Referring to FIG. 3, the maximum opening degree of packing box door 30 is set (defined) by locking protrusion portion 4 d of lever 4 to stopper member 11. That is, the further counterclockwise pivoting of the lever 4 in FIG. 3 is prevented, so that the packing box door 30 connected to the lever 4 via the arms A1 and B2 cannot rotate any more. The maximum opening of the packing box door 30 can be set arbitrarily by adjusting the mounting position of the stopper member 11 as described above.

The flipped-up packing box door 30 is pushed down by pulling a string or the like attached to the packing box door 30 and can be closed. At this time, as the packing box door 30 rotates to the closed position, the shaft 5 strokes toward the lever 4 while rotating clockwise in FIG. By this stroke, the coil spring 7 is gradually compressed, and generates a moment (packing door support force) acting in the opening direction of the packing box door 30. When the packing box door 30 reaches a predetermined opening, the arms A1 and B
1, arcuate rod 3, by mechanical action mainly composed link system from the lever 4, killed moments coil spring 7 is generated, crates door 30 crates become freely closed is closed.

Hereinafter, advantages of the flip-up device according to the present embodiment will be described. (1) The spring force of the packing box door is obtained by the coil spring. Since the coil spring has a longer life than a gas damper used as a spring force generating mechanism in a conventional device, the device according to the present embodiment reduces the overall cost in consideration of maintenance.
(2) The turning radius of the lever is small. For this reason, by attaching the flip-up device according to the present embodiment,
The reduction of the packing box volume is small. (3) The maximum opening of the packing box door is regulated by restricting the pivotal movement of the lever as the driving force transmitting member. Therefore, as compared with the case where the rotation of the packing box door having a large moment is restricted, the packing box door is safely stopped at the maximum opening degree. Further, since the lever is located inside the flip-up device, the space occupied by the device does not increase due to the provision of the maximum opening degree setting mechanism of the packing box door. (4) The maximum opening of the packing box door can be easily changed by the stopper mechanism attached to the packing box body. Since the stopper mechanism is located inside the flip-up device, the provision of the stopper mechanism does not increase the space occupied by the device. (5) Since the entire lifting device accommodated inside the packing device is mounted close to the inner wall of the packing device, the reduction in the volume of the packing device due to the mounting of the lifting device according to the present embodiment is as follows. Very little.

In the embodiment described above, the fixing member 9 is bolted to the inner wall of the packing box via the mounting plate 40 as shown in FIG. 12, but another mounting plate 40 is attached as shown in FIG. It may be screwed to the packing box ceiling wall through the middle. In this embodiment, a fixing means such as a screw can be appropriately used instead of the bolt. Further, the plates including the plates 18 and 19 may be appropriately formed as separate members from each other, or may be integrated. A tension spring can be used instead of a compression spring. Further, the flip-up device of the present invention can be attached to any of a rear packing box door and a side door of a van type truck, and is applied to a vehicle other than the van type truck and other devices having a flip-up type door. Can also. Further, it may be attached to a door that opens vertically in the vertical direction or the horizontal direction. The flip-up device according to the present invention is provided on one side (preferably at the end) of the door.
The door may be mounted on both sides (preferably both ends), and one or more flip-up devices may be mounted on the door end or middle part depending on the weight of the door.

The present invention is mainly applied to a cargo box door of a vehicle such as a truck or a trailer having a flip box type door, but it can be attached to other flip type doors. The shape of the members, the receiving form of the pins connecting or pivoting the members, and the like are not limited to the forms described above, and various forms can be adopted as long as the principles of the present invention are followed.

[0025]

According to the flip-up device of the present invention, the overall cost in consideration of maintenance can be reduced. And the amount of reduction in the volume of the packing box due to the attachment of the flip-up device of the present invention is very small. In particular, by providing a mechanism for stopping a lever that is much smaller than the packing box door, the maximum opening of the packing box door is set safely, and the adjustment of the maximum opening is also facilitated.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a van-type truck flip-up device according to an embodiment of the present invention.

FIG. 2 is a view of the device of FIG. 1 as viewed from the rear.

FIG. 3 is an operation diagram of the device illustrated in FIG. 1, and is a side view illustrating a state where a packing box door is fully opened.

FIG. 4 is an operation diagram of the device shown in FIG. 1, and is a rear view of FIG. 3;

5 is an operation view of the apparatus shown in FIG. 1, and is an external view when a packing box door is opened by 45 °.

FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 1 and is an enlarged view showing a part of a door stopper mechanism.

FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 1, and is a view of the packing box door as viewed from above.

8 is a cross-sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a sectional view taken along line IX-IX in FIG. 1.

10 is a cross-sectional view taken along line XX in FIG.

11 is a sectional view taken along line XI-XI in FIG.

FIG. 12 is a view as seen from an arrow indicated by an arrow line XII in FIG. 1, and is a view of the flip-up device as viewed from above.

FIG. 13 is an enlarged perspective view showing a flip-up device attaching member shown in FIG. 12.

FIG. 14 is an enlarged perspective view showing a cover of the flip-up device shown in FIG. 5.

FIG. 15 is a view showing a mounting form of a flip-up device according to another embodiment of the present invention.

FIG. 16 is an external view of a van type truck in which a packing box rear door is opened and closed.

FIG. 17 is an external view of a van type truck in which a packing box side door is opened and closed.

[Explanation of symbols]

Reference Signs List 1 arm A 2 arm B 3 arc-shaped rod 4 lever 4a one end (first corner) 4b intermediate part (second corner) 4c other end (third corner) 4d protrusion 5 shaft 6 spring seat 7 coil spring 8
Spring cover 9 Fixing member 9a, 9b Parallel plate 9c Packing box ceiling side mounting plate 9d Packing box side wall mounting plate 10 Door stopper mechanism 11 Stopper member 12, 13 Plate 14a, 14b Bolt 15 Bracket mechanism 16 Plate 17 pivot pin 18, 19, 20 Plate 21a, 21b, 21c, 21d Bolt 30 Packing Box Door 31, 32, 33, 34, 35, 36 Pin 37 Hinge (H Hinge) 38a, 38b, 39a, 39b Bolt 40 Mounting Plate 41 Sealing Member (H) Rubber) 42 Escape 43 Device cover

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-202140 (JP, A) JP-A-8-1888049 (JP, A) Fully open 49-53417 (JP, U) Really open 1954 12671 (JP, U) Hikaru 1-100880 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B60J 5/04-5/10 B62D 33/04

Claims (8)

(57) [Claims] 1. A packing box, a packing box door which is opened and closed by rotating about one side of the packing box, an arm A, an arm B, a rod, a lever, a shaft, and elastic means. One end of the arm A is pivotally mounted inside the packing box door, the other end of the arm A is connected to one end of the arm B, and the other end of the arm B is inside the packing box. One end of the rod is connected to an intermediate portion of the arm B, and the other end of the rod is pivotally supported to an intermediate portion of the lever. One end of the shaft is connected to the other end of the lever, and the elastic means is connected to the other end of the shaft and fixed to the other end of the shaft and the main body of the packing box. And the elastic means accompanies the opening and closing operation of the packing box door. By expanding and contracting in response to rotation and stroke of the shaft, said packing boxes doors generates a moment for urging the opening direction, lift-up packing box door, characterized in that the entire device is positioned within the packing box device. 2. A stopper member for regulating the maximum opening of the packing box door by abutting on the lever and locking the lever at a predetermined pivot position of the lever. The packing box flip-up device according to claim 1. 3. The packing box according to claim 2, wherein a protrusion is provided near the other end of the lever to which the shaft is connected, the protrusion being in contact with the stopper member at the predetermined pivot position. Door jumping device. 4. A cargo box door flip-up device according to claim 2, further comprising means for fixing said stopper member so that the mounting position of said stopper member can be displaced along the pivoting direction of said lever. . 5. A seal member is provided between a side edge of the packing box door and an opening edge of the packing box, and a mechanism for pivotally connecting one end of the arm A to the inside of the packing box door is provided. 5. The packing box door flip-up device according to claim 1, wherein an escape portion is provided for releasing a portion of the packing box door projecting inward from the packing box door. 6. A packing box, a packing box door which is opened and closed by rotating about one side of the packing box, an arm A, an arm B, a rod, a lever, a shaft, and elastic means. The whole device is arranged in the packing box, one end of the arm A is pivotally mounted inside the packing box door, and the other end of the arm A is connected to one end of the arm B. That the other end of the arm B is pivotally supported in the packing box on the packing box side; that one end of the rod is connected to an intermediate portion of the arm B; That the other end of the rod is pivotally supported on one side and that one end of the shaft is connected to the other side with a pivot point of the lever with respect to the packing box side interposed therebetween; Means is connected to the other end of the shaft and the other end of the shaft and the body side of the packing box. The elastic means expands and contracts by the rotation and stroke of the shaft accompanying the opening and closing operation of the packing box door, and urges the packing box door in the opening direction. Generating a moment to generate a load. 7. A packing box, a packing box door which is opened and closed by rotating around one side of the packing box, an elastic means disposed in the packing box, an arm A, an arm B, a rod, A link system mainly composed of a lever and a shaft, and linking the packing box door and the elastic means, wherein one end of the arm A is pivotally mounted inside the packing box door; The other end is connected to one end of the arm B; the arm B is pivotally supported on the packing box side in the packing box; and the arm A and the arm B have the packing box door opened. The lever is disposed inside the packing box and pivotally supported on the packing box side, and the lever is moved through the arm A and the arm B. Being connected to the packing box door, the shaft When the packing box door is opened, the stroke is performed while rotating slightly with the pivoting of the lever. The elastic means is connected to the other end of the shaft, and the other end of the shaft and the packing box are connected. The elastic means is elastically mounted between a member fixed to the main body side, and the elastic means expands and contracts by the rotation and stroke of the shaft accompanying the opening / closing operation of the packing box door, thereby opening the packing box door in the opening direction. Generating a moment that urges the cargo box door. 8. A spring for accommodating a spring in a packing box of a vehicle.
A fixing member to which the cover is fixed is fixed, and the spring is biased.
A force is applied to the packing box door which is pivotally connected to the packing box via a link system.
Act in the direction to open the packing box door
Cargo box configured to generate moment
An arm , wherein the fixing member is disposed inside the packing box, and the link system is pivotally connected at a first portion to a back surface side of the packing box door.
A and an arm pivotally connected at a first portion to a second portion of the arm A
B and a rod pivotally connected at a first portion to a second portion of the arm B
And a lever pivotally connected to a second portion of the rod at a first portion.
And a shaft pivotally supported by a second portion of the lever , wherein the arm B and the lever are each provided at a third portion.
The shaft is pivotally mounted on the packing box side, and the shaft is swung in the axial direction by the action of the spring.
A cargo box door flip-up device characterized by being configured to troke.