JPH0751869B2 - Guide rail device for open storage type door - Google Patents

Description

Description: TECHNICAL FIELD The present invention smoothly opens and closes a door (hereinafter referred to as an open storage type door) that can be stored by being fully opened to about 90 degrees and then pushed forward. The present invention relates to a guide rail device for an open storage type door.

2. Description of the Related Art The door installed on the rear surface of the luggage box of a box-shaped truck is widely used as a two-door double-door type door, which is 90 degrees from the fully closed position. When opening up to an angle of 180 degrees, the door itself will largely project to the rear or left and right of the packing box, which may be extremely inconvenient for handling the cargo or hinder other traffic. There is something.

Therefore, the applicant has opened the door 90 in order to solve this problem.
Once fully opened, the door is pushed forward along the side of the luggage box for storage, and the door does not project to the rear or left or right of the luggage box when fully opened, making it a very convenient door device. Was proposed (Actual Application Sho 58-176807).

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention Therefore, according to such a conventional technique, a guide rail for guiding the door in the front-rear direction is fixedly disposed below the rear portion of the side surface of the luggage box when the door is stored. Therefore, in order to close the rear surface of the packing box, a considerable horizontal distance must be maintained between the trajectory of the longitudinal movement of the door and the guide rail. There is a problem that the length of the door becomes long and the stability of the door may be slightly insufficient. Thus, such a problem is particularly remarkable when the weight of the door becomes large, and is not so important in the case of a lightweight door.

Therefore, in view of the actual situation of the prior art, an object of the present invention is to make the guide rail movable so that the guide rail itself can move forward while protruding outward during the forward movement of the door. It is not necessary to make the hinge fixing piece particularly long, so that the stability is sufficient even for a door with a particularly heavy weight, and at the same time, the opening / closing operation of the door can be made extremely light. it can. It is to provide a new guide rail device for an open storage type door.

Means for Solving the Problems A structure of the present invention for achieving the above object is to fix a rail main body that is long in a storage direction of a door and accommodates a guide roller axially attached to a fixed piece of a hinge of the door, and one end. Pivoted to the member,
A parallel link that pivotally attaches the other end to the rail main body and supports the rail main body so that the rail main body can move back and forth in the storage direction of the door; a connecting member that transmits the rotational movement of the door to the rail main body through an auxiliary hinge; When the door is opened and closed, a lock mechanism for preventing the hinge from moving forward and backward is provided, and the fully opened door is stored by the forward movement of the rail body and the rolling of the guide roller in the rail body. This is the gist.

With this structure, when both the guide rail and the hinge are in the retracted limit, the door can be opened and closed through the hinge within a range of approximately 90 degrees from the fully closed state. At this time, the lock mechanism prevents the hinge from moving back and forth and maintains its position immovable.
A smooth opening / closing motion can be performed around this hinge.

Then, when the door is opened up to about 90 degrees fully open, the parallel link swings by receiving the forward force via the hinge, so the rail body supported by the parallel link also moves outward. The lock mechanism is released by moving forward while projecting to. Therefore, the door can move forward and can be stored as it is.

On the other hand, when closing the door, first, when the door in the stored state is pulled out backward, the rail body is also pulled back through the connecting member, whereby the parallel link returns to the original position. Therefore, when both the door and the rail body reach the retreat limit and the door is rotated in the fully closing direction, this rotational movement is transmitted to the rail body via the connecting member, so that the final positioning of the rail body is performed. After each operation of the engagement of the lock mechanism is completed, the door can be rotated around the hinge whose forward and backward movements are constrained to be in the fully closed state.

It operates as described above.

Example Hereinafter, an example will be described with reference to the drawings.

The guide rail device 10 of the open storage type door includes a rail body 11 and
The pair of parallel links 12 and 12 and the auxiliary hinge 20 are main members (FIGS. 1 and 2). However, here, the door D used for the luggage box B of the box-shaped truck is illustrated as an open storage type door.

The door D, together with other doors D, forms a double-door type door that closes the opening B1 on the rear surface of the packing box B.
Is the upper hinge 30, the lower hinge 40, and the auxiliary hinge.
After being fully opened at an angle of about 90 degrees from the fully closed position with respect to the opening B1 by being supported by 20, and along the side surface B2 of the packing box B,
It can be pushed forward and stored.

Each door D is a locking member 5 that forms a detachable hinge by pairing with the hook rod 51 and the hook portions B4 and B4 formed on the rear pillar B3 of the luggage box B.
In addition to having 2, 52, an upper rail 53 and a lower rail 54 are provided. Here, each of the upper rail 53 and the lower rail 54 is a guide rail whose lower side is open, and in particular, the front end surface of the lower rail 54 is closed.

The upper hinge 30 includes a hinge pin 31 fixed above the rear end of the luggage box B, and an L-shaped movable piece 32 rotatable about the hinge pin 31, and the support rod 33 is provided at the tip of the movable piece 32. Is rotatably supported. The tip end of the support rod 33 is bent upward in a hook shape, and the guide roller 34 is axially attached (3rd part).
The guide roller 34 can be engaged with the upper rail 53 from below and can roll into the upper rail 53.

The lower hinge 40 is composed of a movable piece 42 and a fixed piece 43 that are rotatably connected to each other via a hinge pin 41 (first
The movable piece 42 is provided below the front end portion of the door D so as to project. A stopper 44 is attached to the movable piece 42, and the relative angle between the movable piece 42 and the fixed piece 43 is limited so as not to exceed about 180 degrees.

The rail main body 11 is a box-shaped member that is long in the front-rear direction of the luggage box B, that is, the storage direction of the door D, and has an outer side surface open, and one end thereof is pivotally attached to the side surface of the chassis S that is a fixing member. , A pair of parallel links 12, 12 that can be horizontally swung in the front-rear direction
It is supported so that it can be moved back and forth (Figs. 1 and 2).
Figure). However, the other ends of the parallel links 12, 12 are
It is pivotally attached to the back surface of the rail 11, and the rear end surface of the rail body 11 is closed by a cover plate 11a.

Horizontal guide rollers 45a, 45a and vertical guide rollers 45b, 45b are axially mounted on the back side of the fixed piece 43 of the hinge 40 via a sheet plate 46 (see FIG. 4, FIG. 6
Figure), a group of these guide rollers 45a, 45a, 45b, 45b
Can be rolled into the rail body 11. An engaging portion 47 formed by bending a plate material in a wedge shape is provided on the back surface of the fixed piece 43, while an L-shaped engaging rod 13 is provided on the rear parallel link 12. The engaging portion 47 and the engaging rod 13 are engaged with each other above the rail main body 11 when the door D is pulled back to the backward limit, thereby preventing the hinge 40 from moving back and forth. Forms the locking mechanism of.

The auxiliary hinge 20 is composed of a hinge pin 21 rotatably provided below the rear surface of the luggage box B and ring pieces 22 and 25 fixed to both upper and lower ends thereof (FIGS. 1 and 2).

A support rod 23 is provided so as to project upward at the tip of the upper link piece 22, and a caster-shaped guide roller 24 rotatable with respect to the support rod 23 is attached to the upper end of the support rod 23. (Fig. 5). However, it is assumed that the guide roller 24 is inside the lower rail 54 of the door D and can be guided by the lower rail 54 to roll. In addition, at the tip of the lower link piece 25, a V-shaped link piece 2 having a long hole 26a is formed.
One end of 6 is pivotally attached (see FIGS. 1, 2 and 6).
In the drawing, the elongated hole 26a of the link piece 26 is engaged with a pin 11b projecting from the lower surface of the rear end of the rail body 11. Here, the link piece 26, via the support rod 23 and the auxiliary hinge 20,
The rotary motion of the door D is defined as the rotary motion of the link pieces 22 and 25.
It is a connecting member that is transmitted to the rail body 11.

The total weight of the door D is supported by the hinges 30 and 40 and the auxiliary hinge 20, and the door D and each hinge 30,
Upper rail 53 and guide roller are provided between 40 and 20, respectively.
Since the forward / backward moving mechanism of the door D is formed by the combination of 34, the rail main body 11 and the guide rollers 45a, 45a, 45b, 45b, and the lower rail 54 and the guide roller 24, the door D uses the hinges 30 and 40. , In addition to the rotary opening / closing motion function for the rear surface of the packing box B,
The storage function can also be exhibited by the forward and backward motion along the side surface B2 of the packing box B.

Now, consider the case where the door D is in a fully closed state with respect to the rear surface of the packing box B (FIG. 6). At this time, the door D is sealed between the rear pillar B3 of the luggage box B and the front end surface of the door D by the seal rubber SR having an H-shaped cross section, and the opening B1 of the luggage box B is completely closed. It is in. Further, the hinge 40 is in a state of being pulled out to its retracted limit so that the door D can be rotated around the rear pillar B3. on the other hand,
Since the parallel links 12, 12 supporting the rail body 11 are swung rearward, the engaging portion 47 of the hinge 40 and the engaging rod 13 of the rear parallel link 12 are deeply engaged with each other, The lock mechanism composed of these members is in a state in which the hinge 40 is constrained to its retracted limit. At this time, the position of the hinge pin 41 of the hinge 40 is assumed to be substantially coaxial with the hinge pin 21 of the auxiliary hinge 20.

When opening the door D from the fully closed state, the door D is rotated by the hinges 30 and 40 (FIG. 7). At this time, the link pieces 22 and 25 of the auxiliary hinge 20 also rotate around the hinge pin 21 as the door D rotates, so that the link pieces 22 and 25 rotate.
26 is pulled out to the rear side of the luggage box B by the rotation of the link piece 25. However, since the link piece 26 is connected to the rail main body 11 through the long hole 26a, the rail main body 11
No force is transmitted to the. Also, the engaging part
Since the lock mechanism composed of 47 and the engagement rod 13 is maintained in the engaged state, the position of the hinge 40 is also maintained immovable.

When the door D is opened to around 90 degrees, the link piece 25 crosses its dead point (the position where the link piece 25 stands upright with respect to the rear surface of the packing box B. The same applies hereinafter) (Fig. 8). . On the other hand, at this time, a part of the force for opening the door D is hinged to the outside of the front of the packing box B (direction of arrow K1 in the figure) via the movable piece 42, the hinge pin 41, and the fixed piece 43. It acts as a force to push the entire 40. Therefore, the engaging portion 47 is pressed against the engaging rod 13, so that the parallel link 12 is swung forward (arrow K2 in the figure). The rail body 11 is
Since the parallel links 12, 12 are pivotally attached to and supported by the tips of the parallel links 12, 12, when the parallel links 12, 12 swing, the rail main body 11 is
The forward movement along the packing box B can be started while projecting outward of the packing box B.

Then, when the door D is fully opened to about 90 degrees and a force is applied in the direction to push it forward, the parallel link 1
Since 2 and 12 swing further forward, the lock mechanism including the engaging portion 47 and the engaging rod 13 is completely released (Fig. 9). On the other hand, at this time, the relative angle between the movable piece 43 and the fixed piece 42 of the hinge 40 is the maximum angle determined by the stopper 44, and the lock mechanism is released so that the hinge 40 can move back and forth. Therefore, the rolling of the guide rollers 45a, 45a, 45b, 45b inside the rail body 11 allows the door D to freely move forward for storage (arrow K3 in the figure). Since the rail main body 11 projects completely outward from the side surface B2 of the luggage box B due to the swinging of the parallel links 12, 12, the door D moves toward the side surface B2 when moving forward.
There is no risk of contact with.

When the door D is pushed further forward, the parallel links 12 and 12 are brought to the upright position where the rocking is limited (Fig. 10), so that the rail main body 11 holds the immovable position thereafter. Therefore, if the door D is continuously pushed forward, the entire width of the door D is stowed forward along the side surface B2 of the packing box B, and the opening stowage operation can be completed (Fig. 1). ). At this time, since the rear end of the door D is supported by the link piece 22 of the auxiliary hinge 20, the support rod 23, and the caster-shaped guide roller 24, the door D is heavy. However, the stability can be sufficiently increased.

Next, in order to close the door D in the stored state, first, the door D is pulled out to the rear of the packing box B. Guide rollers 45a, 45a, 45
The rail body 11 does not move until the rearmost one of b and 45b comes into contact with the cover plate 11a at the rear end of the rail body 11, so that only the door D can be pulled out rearward. (Fig. 10).

After that, if you further pull the door D backward, the parallel links 12, 12
Swings backward, the rail body 11 moves backward and approaches the packing box B (FIG. 9). At the same time, the link pieces 22, 25 of the auxiliary hinge 20 are also rotated around the hinge pin 21 by the link piece 22 being pulled by the door D, so that the link piece 26 moves rearward and its long hole.
The foremost end of 26a comes into contact with the pin 11b of the rail body 11 (Fig. 8). On the other hand, at this time, the engaging portion of the hinge 40
The lock mechanism consisting of 47 and the engaging rod 13 of the parallel link 12, the hinge 40 is in the retracted limit, the parallel link 12,
When 12 swings backward, it is in an engaged state halfway.

In this way, if the door D is pulled out to the backward limit and then rotated in the closing direction, the link piece 22 is rotated by the rotational movement of the door D, and the link piece 25 is also rotated. The rotational movement of the link piece 25
Since it is transmitted to the rail body 11 via
When the link piece 25 rotates beyond its dead center, the link piece 25 is strongly attracted to its retracted limit and is also attracted to the side surface B2 of the packing box B to complete the engagement of the locking mechanism (Fig. 7). ).

When the lock mechanism is engaged, the hinge 40 is thereafter restrained in its retracted limit position, so that the door D smoothly rotates about the hinge 40 and the upper hinge 30 to the fully closed state. It is possible (Fig. 6).

As described above, the series of connecting members composed of the link pieces 22, 25, 26 transmit the rotational motion of the door D to the rail main body 11 near the fully opened position of the door D, especially when the door D is closed. On the other side of the door D
Because of 26a, no force is exerted on the rail body 11.
Therefore, when the door D, the backward pulling motion, and the closing rotary motion are continuously performed, the pulling action of the rail main body 11 toward the cargo box B side due to the swinging of the parallel links 12 and 12, Since it works to close the door D with a kind of momentum,
The movement of the door D during this period is extremely light. This also applies to the case of opening the door D and then storing it in the front direction. At that time, the rotational force of the door D in the opening direction is the same as that of the door D and the rail body. For both 11 and 11, since it gives a momentum in the direction away from the packing box B, in the end,
The rotational movement for opening / closing the door D and the forward / backward movement for storing / drawing the door D are extremely smooth and lightly continuous in both the opening operation and the closing operation. Can be

In addition, this invention is a door D used for a luggage box B of a box truck.
Not limited to the above, it can be applied to any open storage type door of rockers, various buildings, machinery, etc. as it is.

Advantageous Effects of Invention As described above, according to the present invention, a rail main body and a parallel link that supports the rail main body so as to be movable back and forth,
A connecting member that transmits the rotational movement of the door to the rail main body through an auxiliary hinge and a lock mechanism that prevents the hinge from moving back and forth when the door is opened and closed are provided to advance the rail main body and guide inside the rail main body. When the door is fully retracted by the rolling of the roller, the guide rail becomes a movable type that moves forward while projecting outward, and the door can also be supported by an auxiliary hinge. Therefore, the stability of the door can be made sufficiently excellent, and in addition, the lock mechanism prevents the hinge from moving back and forth when opening and closing the door, while its engagement and disengagement is smooth, so it is extremely smooth. -It has an excellent effect that it can realize a light door opening / closing operation.

[Brief description of drawings]

1 to 10 show an embodiment, FIG. 1 is an explanatory perspective view of the entire structure, FIG. 2 is a view of the main part X in FIG. 1, and FIG. 3 is an enlarged cross-sectional view of the main part of FIG. Fig. 4 is an enlarged sectional view taken along the line YY of Fig. 1, Fig. 5 is an enlarged side view of an essential part of Fig. 1, 6
FIG. 10 to FIG. 10 are explanatory diagrams of the operation sequence. D …… door 11 …… rail body 12 …… parallel link 13 …… engaging rod 20 …… auxiliary hinge 40 …… hinge 43 …… fixing piece 45a, 45b …… guide roller 47 …… engaging part

Claims (2)

[Claims] 1. A rail body which is long in the direction of housing the door and which houses a guide roller axially mounted on a fixed piece of a hinge for supporting the door, one end of which is pivotally mounted on a fixing member and the other end of which is pivotally mounted on the rail body. A pair of parallel links that support the rail body so that the rail body can be moved back and forth in the door storage direction; a connecting member that transmits the rotational movement of the door to the rail body via an auxiliary hinge; A lock mechanism for preventing the hinge from moving forward and backward, and a fully opened door can be stored by advancing the rail main body and rolling the guide roller in the rail main body. Guide rail device for storage type doors. 2. The lock mechanism is formed by engaging an engaging portion projecting on a fixed piece of the hinge with an engaging rod provided on the parallel link. A guide rail device for an open storage type door according to item 1.