JPH0939642A - Side door of library vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify door opening and closing operation and to completely eliminate a risk of causing an incomplete lock condition. SOLUTION: A lock tool 40 using energization of a spring to hold a closed state is respectively provided on each of both of left and right end parts of a lower door 30 and hooks 51, 52 to fix by hooking on fixed parts 53, 54 on the side of a car body 10, a door buried handle 70 and a pair of connecting rods 71, 72 to interlock movement of the handle 70 and the hooks 51, 52 are respectively provided on both of left and right end parts of an upper door 20 on a side door to fix by holding an upper end of the lower door 30 which is closed earlier by a lower end of the upper door 20 from outside. Additionally, the buried handle 70 is constituted so as to fix the upper door 20 by hooking the hooks 51, 52 on the fixed parts on the car body side by operating it, to separate the hooks 51, 52 from the fixed part of the car body side and to release fixture of the upper door 20.

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 for providing a bookcase in a bus-type or box-type body, an inner rack type for loading and unloading books from the central passage side of the body, and an outer rack for loading and unloading books from the outside with a door on the side of the body There is a formula and a combination formula for inner and outer racks. The following conditions are required for the side doors of the outer rack type and the inner rack / outer frame combination type. That is, when the door is opened, the entire surface of the bookshelf is open, when the door is opened, people can approach and not get in and out of the books, and because the setup and movement are repeated, opening and closing work is easy by one person. That is, the book does not get wet with light rain when the door is opened, the door does not open due to the pressing force of the book that sways while traveling, and the open / close handle and locking part do not project outside.

FIG. 4 is a side view showing the appearance of a general library car. Figure 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, in this type of door, the upper end of the upper door 2 which is opened by rotating upward and the lower end of the lower door 3 which is opened by rotating downward are hinged so that the above conditions are satisfied. 4,4 ... 4 with car body 1
, The lower door 3 is first closed, and the upper end of the upper door 2 is held from the outside by overlapping the lower end of the upper door 2 and the lower door 3 with the latch locks as shown in FIG. It is fixed to. The pair of left and right latch locks 5 and 5 are operated by the central operation section 6, and the opening / closing handle 7 uses a T-shaped insertion handle or an embedded handle.

[0004]

However, in the above-mentioned conventional library car, when the side door is closed, the lower door is closed and then the upper door is closed. , The books are so tight that there is no escape for the air that can be pushed in by the upper door. Therefore, unless it is closed too vigorously, the latch does not work well and the incompletely fixed state is likely to occur. Moreover, since the upper door is wider and is larger than the lower door in the vertical direction, the rigidity of the entire body tends to be insufficient, and further, the incomplete fixing is likely to occur.
On the other hand, if the upper door is closed too strongly, the lower door will open before the upper door is overlaid on the upper end of the lower door due to the reaction of air, so it is necessary to provide a sufficient lock on the lower door. In addition, the library car is required to have durability that can be used for a long period of time, but if it is hard closed, the pain of the door itself and the body of the lock part becomes faster.

If the vehicle is started with the upper door locked incompletely, the door will open and the book will pop out due to the pressure caused by the movement of the center of gravity of the book accommodated during traveling. The jumping out of a book is extremely dangerous as it not only damages the jumping out book but also easily causes a traffic accident in another vehicle. In order to reliably prevent this imperfect lock, it is necessary to provide a barbed or other exposed latch for confirming the locked state from the outside for fixing the upper door, for example, as shown in FIG. 6 or 7. It was SUMMARY OF THE INVENTION An object of the present invention is to provide a side door of a library car which is easy to open and close and does not cause an incomplete locked state.

[0006]

In order to solve the above-mentioned problems, an opening / closing structure of a side door of a library vehicle according to the present invention is configured such that an upper end of an upper door opened by rotating upward and a lower door opened by rotating downward. The side doors are fixed to the left and right ends of the lower door by connecting the lower ends of the doors to the vehicle body with hinges and holding the upper end of the lower door closed from the outside with the lower end of the upper door fixed. A locking tool that utilizes the biasing of a spring is provided, and hooks for hooking and fixing to the fixed parts on the vehicle body side at both left and right ends of the upper door, the door embedded handle, and the movement of the handle and the hook are interlocked. A pair of connecting rods are provided, and by operating the embedded handle, the hook is hooked to a fixing portion on the vehicle body side to fix the upper door, or the hook is separated from the fixing portion on the vehicle body side to fix the upper door. Released and are to allow.

The locking tool utilizing the biasing of the springs at the left and right ends of the lower door is, for example, as follows:
The tip is formed with double-sided taper, and a combination of a catch pushed out by a spring and a catch receiver with a hole that fits the tip of the catch, or a ball catch that pushes out the spring so as to sandwich it from both sides, For example, a combination with a metal fitting that has a curved surface that fits the catch. The structure for operating the hook by the handle operation is, for example, by causing an embedded handle for sealing to hook the hook on a pair of left and right fixing parts (hook receiving metal fittings), and It is connected to the handle and integrally rotates 90 degrees around the axis.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view (partial view) showing a main part of an 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
Is a state immediately before locking the door, and only a part of the pair of upper door 20 and lower door 30 is shown. 2 is 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 a locking tool, as shown in FIG. 1, a pair of left and right hook receivers (hereinafter referred to as hook keeper) 53 of the fixed portions 50, 50, 54 is fixed to the vehicle body 10 side, and hooks 51 and 52 that can be hooked facing the hook keepers 53 and 54 are respectively coupled to outer ends of the pipes 71 and 72. The other ends of the pipes 71 and 72 near the center are connected to the left and right ends of the support portion that serves as the 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 around the axes of the pipes 71 and 72.

From the state shown in FIG.
Sideways, the tips of the hooks 51, 52 are fitted into the recesses of the opposing hook keeper 53, 54, and the handle 70 is pressed against the handle embedded frame 61.
2 rotates 90 degrees and bites into hook keeper 53 and 54, respectively. When opening the upper door, if the handle 70 is raised, the hooks 51 and 52 are rotated 90 degrees in reverse to be in an openable state.

Fixed parts 40, 40 at both left and right ends of the lower door 30.
For example, the balls 41a, 41 using the urging force of the spring are sandwiched from both sides as shown in FIG.
a (the front side ball is not visible in the figure) is a spring (not shown) inside the cylindrical portions 41b, 41b.
1a and a set screw 41c are inserted between the ball catch 41 for urging it to push out, and a metal fitting (hereinafter referred to as a ball keeper) 43 having curved surface protruding portions 43a on both side surfaces adapted to the catch. There is. The opposing angles of the ball catch 41 and the ball keeper 43 can be used in a state where they make a relative angle of 90 degrees in addition to those shown in FIG. 2, and in the case of FIG.

[0012] This locking tool is also a combination of a catch, which is widely used (not shown), which has a tapered tip on both sides and is pushed out by a spring, and a catch receiver having a hole adapted to the tip of the catch. Good. Further, the locking tool for the lower door 30 does not require any operation unit having an opening / closing lever (operation handle) as in the case of the upper door 20. The lower door 30 is closed by simply pushing in the door and opened 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 is closed by simply pushing it in, and there is no handle operation. The upper door 20 does not need to be closed vigorously, and is closed quietly and slowly, the hooks 51 and 52 are inserted into the hook keeper 53 and 54 by the handle operation, and further rotated, and the hooks 51 and 52 are bited into the hook keeper 53 and 54. So there is no risk of incomplete locking. At this time, even if the books are uneven and partly protrude outward, the upper door 20 can be pushed in by operating the holding operation handle 70.

As described in detail above, according to the present invention, it is possible to provide a side door of a library car which is easy to open and close and never causes an incomplete lock.

[Brief description of 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 to lock the lower door of FIG.

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

FIG. 4 is a side view showing an 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 tool that may be used for a side door of a conventional library car.

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

[Explanation of symbols]

 1, 10 Vehicle body 2, 20 Upper door 3, 30 Lower door 4 Hinge 5, 40, 50 Fixed 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

Claims (1)

[Claims] 1. The upper door of the upper door which is opened by rotating upward and the lower end of the lower door which is opened by rotating downward are connected to the vehicle body by hinges, respectively, and the upper end of the lower door which is closed earlier is connected to the upper door from the outside. In the side door of the library car that is held down and fixed at the lower end of the upper door, lock tools that utilize spring bias for holding the closed position are provided at the left and right ends of the lower door, and the left and right ends of the upper door are provided. Each of the parts is provided with a hook for hooking and fixing to a fixed part on the vehicle body side, a door embedded handle, and a pair of connecting rods that interlock the movement of the handle and the hook, and the hook is operated by operating the embedded handle. Hook the fixed part on the vehicle body side to fix the upper door,
A side door of a library vehicle, wherein the hook is detached from a fixing portion on the vehicle body side so that the upper door can be unlocked.