JPS5829233Y2 - Door lock mechanism - Google Patents

Description

[Detailed description of the invention] This invention utilizes the opening/closing mechanism of the opening/closing door widely used in so-called lockers, housings for communication equipment and electronic equipment, and allows the door to be opened without the use of a key. Regarding the lock mechanism that prevents the door from being locked.

Generally, this type of cap is used for the special purpose of the device,
In addition, the lockers are often installed in a special machine room for maintenance and inspection purposes, and access to the room is restricted to anyone other than a specific operator, and there is no need to lock the opening/closing door of the locker.

Fig. 1 shows the opening/closing mechanism of the opening/closing door of this kind of door, which is currently widely used, with a perspective view of the main parts.
A rectangular window 3 is provided at an appropriate position on the front side of the locker door 2, which rotates as shown by the arrow around the axis to open and close, and drive rods 4 and 5 are fixed to the tips of this window, respectively. Two upper and lower handles 8 and 9, which are integrally formed with the protrusions 6 and 7 on their surfaces, are connected via a double SCX screw 10 and are arranged to be vertically slidable.

The tips of the drive rods 4, 5 protrude from holes in L-shaped hardware 11, 12 fixed at appropriate positions on the locker, and prevent the door 2 from rotating forward (ie, opening).

Reference numeral 13 denotes a front cover from which the handle is removed, and its vertical width regulates the operating range of the handles 8 and 9 when the door is opened.

By approaching the upper and lower handles 8 and 9 from above and below against the elasticity of the fingers 10, the handles are brought into contact with the protrusions 6 and 9.
The driving rods 4 and 5 fixed to the door 7 also move as indicated by the arrows, and their respective tips are disengaged from the holes in the L-shaped hardware 11 and 12, and the door 2 is rotated forward and opened.

To close the door, close the upper and lower handles 8 and 9 with your fingers and close the door 2.
When the handles 8 and 9 are closed and released, the elasticity of the recovery spring 10 causes the handles 8 and 9 to return to the illustrated positions, and the drive rods 4 and
The tip of 5 engages with the hole of L-shaped metal fittings 11 and 12 to prevent the door from opening.

Advances in technology have led to the miniaturization of communication and electronic equipment, and improvements in equipment reliability have led to less frequent maintenance and inspection work, as well as a reduction in the need for special mechanical rooms for the installation of these types of equipment lockers. , they began to be installed in general offices, sometimes in the corners of hallways, and unlike before, they were easily accessible to an unspecified number of people, and sometimes the doors were opened out of curiosity.
As a result of careless handling, the chances of unexpected breakdowns and failures have increased, and as a result, the necessity of locking has become acutely felt.

The present invention is a locking mechanism that utilizes the opening/closing mechanism shown in Figure 1 as is, and adds a locking function by using an inexpensive locking tool that is widely available on the market. This is achieved by inserting and removing a plate spring which is fixed to the door together with the keyhole between the upper and lower protrusions of the surface and engages the tip of the keyhole which is operated with the key with the rotating surface protrusion.

FIG. 2 shows an embodiment of the locking mechanism according to the present invention, with a perspective view of the main parts seen from above, in which the keyhole portion 14 is fixed to the door 2 together with the rectangular leaf spring 15 at an appropriate position near the handle 8°9. However, when the tip of the rotary protrusion 16 fixed to the tip of the keyhole portion 14 rotates after inserting the key 17, the tip 1 of the spring 15
The handles 8 and 9 are configured to enter between the protrusions 6 and 7 against the elasticity of the handle 5'.

The illustrated position shows the locked state, and the handle 8.9 cannot be operated until the drive rods 4, 5 open the door due to the intervention of the tip 15' of the leaf spring that has entered between the protrusions 6, 7. Can not.

When opening the door, by inserting and rotating the key 17, the rotary protrusion 16 moves to the position shown in the dotted line, and the tip 15' of the leaf spring
It also moves to the dotted line position due to its own elasticity, and the surface protrusion 6
, 7 and release the lock, allowing the handles 8 and 9 to open the door.

Since this invention uses the conventional opening/closing mechanism as is, it can be applied to equipment lockers that are already in use to provide a locking function in a short time. The practical effects are significant.

[Brief explanation of drawings]

FIG. 1 shows a perspective view of a main part of a door opening/closing mechanism for a locker for communication equipment and electronic equipment which is widely used, and FIG. 2 shows a perspective view of a main part of a locking mechanism according to the present invention. In the figure, 2 is an opening/closing door, 4 and 5 are vertical drive rods, 6 and 7 are handles, 8 and 9 are integrally formed with a protrusion, 10 is a spring that engages the handles 8 and 9, and 14 is a lock. The keyhole portion, 15 is a leaf spring, and 16 is a surface rotating protrusion of the locking keyhole portion.

Claims (1)

[Scope of utility model registration request] Each has a handle that moves up and down on the front, a protrusion that is formed integrally with the handle, and a protrusion that fixes a drive rod at the tip of each protrusion on the surface, and the protrusion is placed between the lower protrusion of the surface and the door together with the keyhole part. An opening/closing door locking mechanism characterized in that a leaf spring fixed to a keyhole is inserted and removed by engaging a surface rotating protrusion at the tip of a keyhole portion operated by a key.