JPH0513870Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to an auxiliary lock device installed on the door of a freight vehicle such as a container car or a cold storage.

(Prior Art) Conventionally, the lock of the door of a container car, etc. is based on a telescoping lever (hereinafter simply referred to as the main device) connected to a handle and arranged vertically.

However, with this main device, once the driver leaves the vehicle for a break or the like, a third party can easily turn the handle and open the door without permission.

Therefore, there is a risk of the item being stolen during the delivery process, and if there is a dangerous item inside, it may cause an accident. Furthermore, in recent incidents of food poisoning, etc., it has been pointed out that there is a danger of poisonous substances being contaminated during transportation.

(Problem to be solved by the present invention) Therefore, the present invention provides an auxiliary locking device separate from the above-mentioned main device, which can only be operated from the driver's seat, and allows the third party door to be opened. The aim is to eliminate the risks of theft, accidents, etc. by making it impossible, and to help improve management and safety in the transportation process of freight vehicles.

[Structure of the invention] (Example) To explain the following based on the drawings of the example, in Fig. 1 showing the door part of a container such as a container car,
Reference numeral K denotes a conventional main device for controlling the opening and closing of a door, and the locking device of the present invention is installed separately from this main device, for example, at the upper position in the center of the door section, as indicated by the dotted line.

In Fig. 2, which shows the main parts of the present invention, 1 is a latch receiving part 1 provided on the back side of the frame M1 surrounding the door. An electromagnet 2 is disposed inside the case, and a suction operating rod 3 that is attracted by the magnetization of the electromagnet 2 and a locking rod 4 that is interlocked with the rod and has a locking claw 4a protruding from its tip are connected via restoring springs. The base end portion thereof is pivotally attached to the base shaft 3a. A fixing rod 5, which engages the locking pawl 4a and fixes the ratchet 7 via a sliding pin 6 during locking, is pivoted to the base shaft 5a with a restoring spring.

The power source for the electromagnet 2 may be wired to the vehicle battery or may be provided with its own power source, and if there are a plurality of doors, a plurality of corresponding operation switches may be provided.

On the other hand, a latch part 8 is disposed on the back side of the door M2, and its details include a latch 9 disposed in the case 11 whose lower part is supported by a spring 10 and engages with the latch 7, The case 11 is connected to the key 13 provided on the outside of the door M2, and its rotation opens the case 11.
A slide rod 12 that can be freely inserted and removed from the housing is attached. That is, in an emergency, the slide rod 12 may come off and the latch 9
This makes it possible to drop it and disengage it from the ratchet 7.

Note that 14 is a manual push-up frame connected to the lower end of the spring 10 to return the spring 10 and latch 9 to their original positions once they have fallen.

(Operation) To use the auxiliary lock device of this invention, first lock the main device's steering wheel, then return to the driver's seat and turn the operating switch to the lock side. Then,
The input to electromagnet 2 is turned OFF, and the adsorption operating rod 3
The locking rod 4 is rotated about the base shaft 3a by the action of the restoring spring, the locking pawl 4a and the fixed rod 5 are engaged, and the ratchet 7 is fixed via the sliding pin 6. On the other hand, the lower latch 9 is urged upward by the spring 10 and engages with the pawl of the latch 7, so that the auxiliary lock functions and the door M2 is doubly locked (see Figure 2). .

Next, when it is desired to open the door M2 for loading or unloading a load, etc., the operator turns the operating switch to the opening side in the driver's seat. Then, the electromagnet 2 receives an input and the adsorption actuating rod 3
, the locking rod 4 operates in the opposite direction to the locking case, and the locking claw 4a and the fixing rod 5 are disengaged. Therefore, the fixed state of the ratchet 7 is released,
The lock of door M2 of the auxiliary locking device is released.
Therefore, when the handle of the main device is operated to release the lock, the double lock is released and the door M2 can be opened to carry out unloading work, etc. (see FIG. 3).

If you want to lock the door again after the unloading work is completed, you can return to the driver's seat and flip the operating switch to the lock side in the same way as above.

Next, if some kind of emergency occurs and the auxiliary lock device is locked and becomes inoperable, this may be a concern in the event of an emergency, but in this case, insert the key G into the key 13 provided on the outside of the door. Turn it. Then, the slide rod 12 separates from the case 11 via the connecting rod 12a, the spring 10 and the latch 9 fall, and the engagement between the latch 7 and the latch 9 is released, so this emergency situation can be avoided. (See Figure 4).

In addition, the return of this slide rod 12 is performed by pressing the push rod 14.
, and then turn the key 13 to its original position (see Figure 4C).

[Effects of the invention] As described above, the present invention provides a separate auxiliary lock device to the main device, and furthermore, by making the auxiliary lock operable only from the driver's seat, it is possible to prevent the door from being opened by a third party. By making it impossible to open and close the door, it is possible to avoid theft, accidents, etc., and ensure transportation safety.

In addition, since the mechanism uses electromagnets, it can be operated simply by inputting a switch, which puts no burden on the user.Furthermore, in the event of an emergency, the lock can be released by pressing a key, so if there is a problem with the operation, the lock can be released in an emergency. There is no need to worry if this happens.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a front view of the door of a freight vehicle, Fig. 2 A is a longitudinal sectional front view of the main part of the proposed device when it is locked, and Fig. B is a partially cutaway side view of the main part. Figure 3A is a longitudinal sectional front view of the main part of the proposed device when the lock is released, Figure B is a partially cutaway side view thereof,
Figure 4A is a longitudinal sectional front view of the main part when the latch is dropped in an emergency, Figure 4B is a partially cutaway side view, and C
FIG. 3 is a partially cutaway front view showing a restored state. 1... Latch receiving part, 2... Electromagnet, 3... Adsorption operating rod, 4... Locking rod, 5... Fixed rod, 6... Sliding pin, 7... Ratchet, 8... Latch part, 9
...Latch, 10...Spring, 11...Case, 1
2...Slide rod, 13...Key.

Claims (1)

[Scope of Claim for Utility Model Registration] An electromagnet 2 whose operation switch is wired to the driver's seat is arranged on the door of a container such as a container car, on the side of the frame M1 that surrounds the door, and the electromagnet 2 has an electromagnet 2 connected to the driver's seat. The suction operating rod 3 to be removed and a locking rod 4 which is interlocked with this and has a locking claw 4a protruding from its tip are pivotally attached, and when the lever is locked to the locking claw 4a, the ratchet 7 is moved from the sliding pin 6. A latch receiving portion 1 is provided with a fixing rod 5 pivotally attached thereto, and a latch 9 is disposed on the door M2 side within the case 11 and whose lower portion is supported by a spring 10 and engages with the latch 7. In addition, a latch part 8 is provided on the lower side of the spring 10 to allow the latch 9 to fall by attaching a slide rod 12 which is connected to a key 13 provided on the outside of the door M2 and can be freely inserted and removed from the case 11 by the rotation of the slide rod 12. An auxiliary lock device for a freight vehicle, which is characterized by: