JP3122603B2 - Library car side door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side door of a library car, and more particularly, to a side door of a library car having an improved side door lock structure.

[0002]

2. Description of the Related Art As a method of providing a book shelf in a bus-type or box-type body, an inner rack type in which books are taken in and out from a central passage side in the body, and an outer rack in which a door is provided in a side surface of the body to take books in and out. There is a formula and a combined use of the inner and outer frames. The following conditions are required for the side doors of the external type and the internal type combined with the external type. That is, when the door is opened, the bookcase is fully open, people approach when the door is open, and do not hinder access to books, and are repeatedly set up and moved. That the book does not get wet when the door is opened due to light rain, that the door does not open due to the pressing force of the book that shakes while traveling, and that the opening / closing handle and the locking part do not protrude to the outside.

FIG. 4 is a side view showing the appearance of a general library car. FIG. 5 shows an example of a conventional library car door.
It is a side view which shows the rear half of a library car. Conventionally, this type of door includes a hinge (hinge) that connects an upper end of an upper door 2 that is opened by rotating upward and a lower end of a lower door 3 that is opened by rotating downward so as to satisfy the above condition. The body 1 with 4,4 ... 4
, The lower door 3 is closed first, the upper end of the lower door 3 is placed on the lower side of the upper door 2 from outside, and the left and right sides of the upper door 2 and the lower door 3 are latched as shown in FIG. It is fixed to. The pair of left and right latch locks 5 and 5 are operated by a central operation unit 6, and the open / close handle 7 uses a T-shaped insertion handle or an embedded handle.

[0004]

However, in the above-mentioned conventional library car, when closing the side door, the lower door is closed and then the upper door is closed. There is no escape for the air being pushed in by the top door, because the books are tightly packed. For this reason, if the door is not closed too vigorously, the latch does not work well and is likely to be in an incompletely fixed state. In addition, the upper door is wider and larger than the lower door in the vertical direction, so that the overall rigidity tends to be insufficient, and the upper door is liable to be incompletely fixed.
On the other hand, if the upper door is closed too strongly, the lower door opens before the upper door is overlaid on the upper end of the lower door due to the reaction of air, so it was necessary to provide a sufficient lock on the lower door. In addition, when the library car is required to have durability that can be used for a long period of time, if it is closed tightly, the pain of the door itself and the body of the body other than the lock part becomes faster.

[0005] If the vehicle is departed while the upper door is not fully locked, the door is opened and the book jumps out due to the pressure caused by the movement of the center of gravity of the book stored during traveling. Jumping out of a book is not only likely to damage the jumping out book, but also can easily cause a traffic accident in another vehicle, which is extremely dangerous. In order to surely prevent the incomplete locking, it is necessary to provide a bar-shaped or other exposed latch, as shown in FIG. 6 or 7, for example, as shown in FIG. Was. SUMMARY OF THE INVENTION It is an object of the present invention to provide a side door of a library car in which a door opening / closing operation is simple and there is no possibility that an incomplete lock state occurs.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that an upper end of an upper door which is opened by rotating upward and a lower end of a lower door which is opened by rotating downward are respectively hinged. in attached to the vehicle body in a side door of the library vehicle for fixing suppressed at the lower end of the top cover the upper end of the lower door closed above from the outside, the car
Provided on the left and right inner surfaces of the side frame of the body (10),
Push the ball (41a) with a spring so as to sandwich it
On the ball catch (41) and inside the lower door (30)
The ball catch (41) is provided so as to protrude.
Bolts with curved projections (43a) on both sides
And a keeper (43), and the lower door (30) is closed.
A lower door locking tool to be held in position, and the vehicle body (10)
Hook holders (5) provided on the left and right inner surfaces of the side frame
3, 54) and left and right ends of the upper door (20).
Hooked on the hook receivers (53, 54)
Hook (5
1,52) and provided at substantially the center of the outer surface of the upper door (10).
Door embedded handle (70), said door embedded
Movement of handle (70) and hooks (51, 52)
And a pair of connecting rods (71, 72) for interlocking
By pushing down the embedded handle (70),
The hooks (51, 52) are connected to the hook receivers (53, 5).
4) while closing the upper door (20) gradually
Then, fix the upper door (20), and
By operating the dollar (70), the hook (5)
1, 52) from the hook receivers (53, 54).
Release the upper door lock to release the lock of the upper door (20).
With the side door of the library car, which is equipped with
is there.

[0007]

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view (partial view) showing a main part of one embodiment of the present invention. However, in FIG. 1, the lower door 30 is locked to the vehicle body 10 and the upper door 20 is locked.
Is shown just before locking, and only a part of the pair of upper door 20 and lower door 30 is shown. FIG. 2 shows the lower door 3 of FIG.
It is a perspective view which shows an example of the lock tool used for 0 lock.

To lock the left and right ends of the upper door 20, as shown in FIG. 1, a pair of left and right fixed portions 50, hook receiving members (hereinafter referred to as hook keeper) 53, The hook 54 is fixed to the vehicle body 10 side, and hooks 51 and 52 which can be hooked opposite to the hook keeper 53 and 54 are connected to one ends on the outside of the pipes 71 and 72, respectively. The other ends of the pipes 71 and 72 near the center are respectively connected to the left and right ends of a support portion serving as a rotation axis of the handle 70 of the operation portion 60. Therefore, the handle 70, the pipes 71 and 72, and the hooks 51 and 52 all rotate integrally about the axis of the pipes 71 and 72.

The upper door 20 is further moved from the state shown in FIG.
Side, the tips of the hooks 51 and 52 are fitted into the recesses of the opposing hook keeper 53 and 54, and the handle 70 is pressed against the handle embedding frame 61.
2 rotates 90 degrees and bites into hook keeper 53, 54, respectively. When the upper door is opened, if the handle 70 is raised, the hooks 51 and 52 are turned 90 degrees on the contrary to be in an openable state.

Fixed portions 40, 40 at both left and right ends of lower door 30
For example, balls 41a, 41 are sandwiched from both sides as shown in FIG.
a (a ball on the near side is not visible in the figure) and a spring (not shown) in the cylindrical portions 41b, 41b
Combination of a ball catch 41 urged to be pushed out by 1a and a set screw 41c) and a metal fitting (hereinafter referred to as a ball keeper) 43 having a projection 43a having a curved surface whose both sides conform to the catch. There is. The angle at which the ball catch 41 and the ball keeper 43 face each other is not limited to that shown in FIG. 2, but can be used in a state where the angle is relatively 90 degrees. In the case of FIG. 1, the ball catcher 43 is used in that state.

This locking tool is not shown in the figure, but is widely used. It is also possible to use a combination of a catch formed with a tapered tip on both sides and pushed out by a spring and a catch receiver having a hole adapted to the tip of the catch. Good. Further, as a lock tool for the lower door 30, an operation unit having an open / close lever (operation handle) as in the case of the upper door 20 is not required at all. The lower door 30 closes by simply pushing the door in, and opens by pulling.

When closing the side door of the library car, the lower door 30 is first closed and then the upper door 20 is closed. The lower door 30 closes simply by pushing the door in, and there is no handle operation. The upper door 20 does not need to be closed vigorously and closes gently and slowly, and the hooks 51 and 52 are inserted into the hook keeper 53 and 54 by operating the handle, and further rotated to make the hooks 51 and 52 bite into the hook keeper 53 and 54. Therefore, there is no possibility that an incomplete lock condition will occur. At this time, even if the books are not aligned and partially protrude outward, the books can be pushed in by the pressing operation handle 70 with the upper door 20.

As described above in detail, according to the present invention, it is possible to provide a side door of a library car which can be easily opened and closed and has no possibility of incomplete lock.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of a fixture used for locking the lower door of FIG. 1;

3 is a perspective view showing an example of a fixture used for locking the door of the conventional example of FIG. 5;

FIG. 4 is a side view showing the appearance of a general library car.

FIG. 5 is a side view showing a side door of a conventional library car.

FIG. 6 is a perspective view of a fixing device that may be used for a side door of a conventional library car.

FIG. 7 is a perspective view of a fixture that may be used for a side door of a conventional library car.

[Explanation of symbols]

 1, 10 Body 2, 20 Upper door 3, 30 Lower door 4 Hinge 5, 40, 50 Fixing part 6, 60 Operating part 7, 70 Handle 8 Window 41 Ball catch 43 Ball keeper 51, 52 Hook 53, 54 Hook keeper 71, 72 pipe

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60P 3/00 B60P 3/025 B60P 1/273 B62D 33/02 E05C 19/06 B60J 5/04 B60J 5 / Ten

Claims (1)

(57) [Claims] An upper end of an upper door which is opened by being pivoted upward and a lower end of a lower door which is opened by being pivoted downward are respectively connected to a vehicle body by hinges, and the upper end of the previously closed lower door is connected to the upper door from the outside. And a ball catch (41) which is provided on the left and right inner surfaces of the side frame of the vehicle body (10) and pushes out the ball (41a) with a spring so as to sandwich it from both sides; The ball catch (4) is provided so as to protrude inside the lower door (30).
A ball keeper (43) having, on both sides, curved projections (43a) conforming to 1), and a lower door locking tool for holding the lower door (30) in a closed position; and the vehicle body (10). Hook receiving members (53, 54) provided on the left and right inner surfaces of the side frame member, and the hook receiving members (53, 54) provided on both right and left ends of the upper door (20).
Hooks (51, 52) that are hooked on and gradually coupled by a biting operation while rotating, and an embedded handle (70) provided substantially at the center of the outer surface of the upper door (10).
And a pair of connecting rods (71, 72) provided inside the upper door (10) for interlocking the movement of the embedded handle (70) and the hooks (51, 52). 70), the hooks (51, 52) are connected to the hook receivers (53, 5).
4), the lower door (20) is fixed while the upper door (20) is gradually closed, and the hook (5) is operated by raising the embedded handle (70).
And a locking device for an upper door for releasing the upper door (20) from the hook receiving member (53, 54) by separating the upper door (20) from the hook receiving member (53, 54).