JPS5838122Y2 - door locking device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a door locking device, and an object of the present invention is to provide a door locking device that allows the door to be easily opened and closed, and also that can be easily locked and related to the door locking device. do.

Generally, inside the storage cabinet for audio equipment, etc.
Items such as player devices, records, cartridges, etc. that require a viewing window are stored in the cabinet, and the door of this cabinet must be able to be easily locked and unlocked.

A conventional door locking device, applied to the above-mentioned cabinet door, consists of fixing a magnetic catch or magnet that operates in two stages with a spring on the cabinet side, and fixing an iron plate to a predetermined location on the back of the door. When closing the door, the iron plate of the door comes into contact with the magnet and is attracted to the door, keeping the door closed. When opening the door, the front of the door is pushed towards the back and the spring is energized to push the door forward. Or, the door was opened by pulling the bundle attached to the front of the door forward.

However, according to the above-mentioned conventional example, the closed state of the door is held only by the magnetic force of the magnet, so vibrations of the floor,
There is a drawback that the adsorption force of the magnet may not work properly depending on the contact condition of the magnet, distortion of the door and cabinet, etc., and it may become unstable. Also, if the door is closed with excessive force, the recoil from contact with the magnet may occur. However, although it has the advantage of having a simple structure, the door cannot be reliably locked, so a pouring window is required when handling audio equipment, records, cartridges, etc. There is a drawback that the stored items cannot be securely maintained.

The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings.

Figures 1A and 1B are a front view and a side view of a cabinet to which one embodiment of the door locking device of the present invention is applied, respectively;
Figures A to C are a front view, a plan view, and a side view of the main parts of the cabinet, respectively.

In the figure, a cabinet 1 roughly consists of a cabinet body 2, a vertical frame 3, and a pair of left and right doors 4, 5.

The cabinet body 2 has a box shape with an open front, and has a plurality of racks 6 and 7 on the left and right sides of the frame 3 as a boundary, and wheels 8 for movement on the bottom surface, and a pair of support parts 2 on the plane of the ceiling plate.
A pin mechanism 9 is provided at a.

As shown in FIGS. 2A and C1 and 3, the pin mechanism 9 has a pin 11 fitted into a cylindrical body 10 that is inserted into and fixed to the support portion 2a so as to be slidable in the front and rear direction.
It is always energized forward by this.

The frame 3 is, for example, extruded from aluminum to have a U-shaped cross section, as shown at point 2 B, FIGS.
It has an oval hole 3b, a pair of guide holes 3C, and a bolt hole 3d, and is screwed to a predetermined position on the front surface of the cabinet body 2 using another mounting bolt hole 3e.

The door 4 is made of, for example, a rectangular glass plate, and has shaft portions provided at the upper and lower ends of the outer side supported by the cabinet body 2, respectively.
The U
A letter-shaped metal bundle plate 12 is fitted and fixed.

Door 4 is shown in Figure 2 A. When it is closed as shown in B, the pin 11 of the pin mechanism 9 comes into contact with the inner surface of the bundle plate 21 and urges the door 4 in the opening direction, but the inner surface of the bundle plate 21 The hook portion 21a bent at
) and is held in the closed state.

The door 5 is similarly supported by a pivot hinge 14 and is held closed by a bundle plate 21.

As shown in FIGS. 5A and 5H, the door control mechanism 13 generally includes a locking mechanism 22 and a locking mechanism 23 on a common bracket 24, and is mounted at a predetermined position inside the U-shape of the frame 3.

In addition, especially in FIGS. 6A-C, the locking mechanism 22 is attached to the bracket 24.
Only the assembled state is shown.

As shown in FIGS. 7A-C, the bracket 24 is formed by bending a metal plate into a roughly U-shape, and has a circular hole 24a and an oval hole 2 formed by tightening and fixing a ring spacer 25 in the bottom plate.
4b, and a pair of cut and raised guide walls 24C,
Also, a pair of guide holes 24d and four bolt holes 2 are provided on the side wall.
4 e and four bolt holes 24 f on the opposite wall.
is formed.

26 is a cover bracket, as shown in Fig. 8A and B.
A negative circular hole 26a and four bolt holes 26b are formed in the metal plate, and a pair of guide ribs 26C are formed protruding from the lower end of the inner surface, and the opposite wall of the bracket 24 is formed as shown in FIGS. It is mounted and fixed by aligning the bolt holes 26b and 24f with the outer surface and inserting and tightening the bolts 27, respectively.

28 is a shaft, as shown in FIGS. 9A and 9B, it has a serration portion 28a, a small diameter portion 28b, and an E-ring mounting groove 28C.
1 and both side chamfered portions 28d, as shown in Fig. 6A-
As shown in FIG.
E inserted into and supported by a and attached to groove 28C
A ring 37 prevents it from coming off.

Reference numeral 29 denotes an operating lever, which has a serrated hole 29a in the boss portion as shown in Fig. 10A-C;
, as shown in B, the serration portion 28 of the shaft 28
It is installed by fitting the serrations into a.

30 is a catching lever (pressing lever), and as shown in FIGS. 11A-C, it has an oval hole 30a, a pair of pressing arms 30b extending left and right, and a lower end surface 30C with chamfered ends. It consists of a roughly T-shaped metal plate.

The catching lever 30 is attached to the shaft 28 by fitting its oval hole 30a into the chamfered portions 28d on both sides of the shaft 28 so as to be able to rotate together with the shaft 28.

Reference numeral 31 denotes a right stop lever (rotating lever), which has a hole 31a at one end as shown in FIGS.
As shown in FIGS. A to C, it is separately rotatably fitted to the rear part of the shaft 28, and the other end is connected to the guide hole of the bracket 24.
Projects outward through 4 d.

33 is a left-hand stop lever (rotating lever), and as shown in FIGS.
b respectively, and a cap 32 is fitted and fixed on the other end, and similarly each of the above-mentioned parts 30 and 31 of the shaft 28
In between, it is rotatably fitted separately from the shaft 28, but due to the function of the stepped portion 33b, the other end is located on the extension line of the right stop lever 31 and is connected to the other guide hole 24d of the bracket 24. protrudes outward through the

34 is a spring made of a torsion coil spring, the 14th
As shown in Figures A-C, a pair of hook parts 34b are formed at both ends of a coil part 34a of a predetermined diameter, and as shown in Figure 6A-C.
As shown in C, the coil portion 34 is attached to the rear end of the shaft 28.
a through the ring spacer 35 shown in FIGS. 15A and 15H (therefore, the outer diameter of the spacer 35 is equal to
(smaller than the inner diameter), and is attached by engaging the pair of hook portions 34b with the lower end surfaces of the left and right stop levers 31 and 33, respectively.

Therefore, each of the stop levers 31, 33 is urged to rotate in the direction of arrows A and C in FIG.

Note that 36 in FIG. 6C is a washer. In this way, the locking mechanism 22 shown in FIGS.
8 Insert the catching lever 30 into its hole 30a from the a side.
After fitting, the E-ring 37 is attached to the groove 28C to hold the lever 30, and the shaft 28 is further inserted so that its serration portion 28a fits into the hole 24 of the bracket 24.
a and is assembled into the bracket 24 so as to protrude forward.

Next, after sequentially fitting and assembling the stop levers 33 and 31 from the rear end of the shaft 28 with the washer 36 interposed,
Fit and assemble the ring spacer 35 and spring 34 in the same manner, and finally insert the cover bracket 26 into its hole 26a.
is fitted onto the small diameter portion 28b at the rear end of the shaft 28 and assembled, and then fixed by bolts 27.

Also, each stop lever 33, 31 will be engaged and biased by a pair of hook portions 34b of a spring 34, but the cap 32 has not yet been attached.

Next, the locking mechanism 22 is attached to the inside of the frame 3 shown in FIGS.
The bolts 4 are inserted into the holes 3a and positioned by aligning the oval holes 24b and 3b, and the bolt holes 24e and 3d are aligned with each other at the four locations shown in FIGS. 5A and 5B, respectively.
1 to be installed and fixed.

At this time, the tips of each stop lever 31, 33 protrude from the pair of guide holes 3C of the frame 3, and the cap 32 is fitted therein.

Further, an operating lever 29 is fitted and attached to the serration portion 28a of the shaft 28 protruding from the front surface of the frame 3.

Next, the locking mechanism 23 is assembled.

42 is a cylinder lock, and as shown in FIG. 16A-C, the main body 4 is
2a and a threaded portion 42b having an elliptical cross section, the threaded portion 42 has a keyway 42C1 for inserting a key 47 shown in FIG.
A nut 45 is screwed onto b.

As shown in FIGS. 5A and 5B, this cylinder lock 42 has a threaded portion 42 b inserted into and projected from the front surface of the frame 3 into the oval holes 3 b and 24 b with respect to the frame 3 and the lock mechanism 22 , and is secured to the frame 3 and the lock mechanism 22 by a nut 45 . The bracket 24 is tightened and fixed.

46 is a key stopper, as shown in FIGS. 18A-C, a small U-shaped portion 46a and a large U-shaped portion 46b are respectively bent from a metal plate, and an oblong hole 46C is provided. Then,
As shown in FIGS. 5A and 5B, the small U-shaped portion 46a is inserted into the brackets L-24 and 26, the oblong hole 46C is fitted into the pin 44 of the cylinder lock 42, and the large U-shaped portion The shaped portion 46b is attached to a pair of cut and raised guide walls 2 of the bracket 24.
4 and C so that it can be slid freely in the directions of arrows E and F in FIG. 5A.

In this case, in the unlocked state, the keyway 42C of the cylinder lock 42 is oriented horizontally as shown in FIGS. 2A and 5A, and the pin 44 is at the same height as the center of the cylinder lock 42. The position of the key stopper 46 is also regulated by this, and the key stopper 46 is at the sliding limit position in the direction of arrow F in the figure, and its upper end surface is separated from the lower end surface 30C of the catching lever 30.

Next, the operation of the door locking device having the above structure will be explained.

As described above, when the frame 3 containing the door control mechanism 13 is attached to the cabinet body 2, as shown in FIG.
As shown in Fig. C, the doors 4 and 5 each engage the hook portion 21a of the bundle plate 21 with the stop lever 33. of the locking mechanism 22.
31 and are in a closed state together.

Here, in FIG. 2A, when the operating lever 29 is rotated clockwise, the integral catching lever 30 is rotated in the same direction via the shaft 28 and reaches the position shown by the two-dot chain line.
The stop lever 33 that is in contact with this also has a spring 3
4 in the direction indicated by the arrow in the same figure, and reaches the position indicated by the two-dot chain line in FIGS. 2A and 2C.

Thus, the door 4 is released from the engagement by the stop lever 33 (cap 32) of the hook portion 21a in FIG.

Therefore, the door 4 instantaneously pops out using the pivot hinge 14 as a rotational fulcrum and becomes open.

At this time, the pin 11 protrudes to the position indicated by the two-dot chain line in FIGS. 2B and 3.

Subsequently, when the restraining force on the operating lever 29 in FIG. 2A is released, the stop lever 33 returns to rotation in the direction of the arrow C in the same figure due to the spring force of the spring 34, and thereby the catching lever 30 and the operating lever 29 also return to their original positions. Rotate back to position.

Also, during the above operation, the other stop levers 31 are not subject to the regulating force of the catching lever 30 and do not rotate at all.
Door 5 remains closed.

If you subsequently wish to open another door 5, all you have to do is turn the operating lever 29 in FIG. It will be in an open state.

Next, when you want to close the opened door 4, as shown in the second diagram, when you push the door 4 in the closing direction by operating the bundle plate 21, the bundle plate 21 contacts the protruding pin 9 and at the same time hooks the door 4. The inclined surface of the portion 21a abuts against the cap 32 of the stop lever 33.

When the door 4 is further pushed in, the pin 9 is slid back to the rear against the spring 12, and the stop lever 33 is again rotated in the direction of the arrow by the tilting effect of the hook portion 21a. After getting over the lower end of a, it rotates back in the direction of arrow C and fits between the door 4 and the hook part 213.

In this way, the hook part 21a of the door 4 is connected to the stop lever 33 (
The cap 32) is pressed into contact with the cap 32) to be in a closed state again.

When closing other doors 5, it is also necessary to simply push them in.

According to this, the hook portions 21a of the doors 4, 5 are mechanically locked by the stop levers 33, 31, respectively, so that the locking function is stable and reliable.

Further, there is no problem such as the door 4, 5 being closed strongly and causing the user to return and listen again.

Next, the case of locking the closed doors 4 and 5 will be explained.

After inserting the key 47 into the horizontal key hole 42C of the cylinder lock 42 of the locking mechanism 23 shown in FIG. After closing, pull out the key 47.

Then, the pin 44 also rotates 90 degrees and reaches the position shown by the two-dot chain line.
As a result, it is moved by one minute in the direction of arrow E in FIG. 2A.

Therefore, the key stopper 46 whose oblong hole 46C fits into this pin 44 also moves by one minute in the same direction, and as shown in FIG.
As shown in FIG. 5A, the small U-shaped portion 46a slides and fits into both sides of the lower end of the catching lever 30.

In this way, the catching lever 30 becomes unable to rotate.
The operating lever 29 integrated therewith also becomes unrotatable.

Therefore, the stop levers 31 and 33 cannot be rotated, that is, the doors 4 and 5 cannot be opened.

This ensures the integrity of stored items such as audio equipment.

To release the locked state, the key 47 is inserted again into the vertically oriented keyway 42C of the cylinder lock 42 and rotated 90° clockwise, and the key stopper 46 is The catching lever 30 returns to the downward movement and returns to its rotatable unlocked state.

In the above embodiment, the door control mechanism 13 can be used with the locking mechanism 22 alone without the locking mechanism 23.

Furthermore, in the above embodiment, the doors 4 and 5 are double-opening type, but
This (not limited to yu) can also be a single door format.

Further, in the above embodiment, when the lock is in place, the catching lever 30 is held unrotatable, but the stop levers 31 and 33 can be rotated downward, so that, for example, the doors 4 and 5 are open. At the same time, after locking as described above, door 4
, 5 are closed, the doors 4, 5 can be closed without any trouble by downward rotation of the stop lever.

Furthermore, after closing and locking doors 4 and 5, I accidentally turned on key 4.
Even if you lose the stop lever 33.7, insert a thin plate or the like into the gap between the frame 3 and the doors 5 and 5 in Figure 2A.
By pressing down 31, doors 4 and 5 can be easily opened.

According to the door locking device of the present invention, the door is rotatably attached to the housing so that it can be opened and closed freely, the locking mechanism body is attached to the housing, and the operating lever and the pressing lever are supported by the body. It consists of a shaft to which each lever is fixed, and a rotary lever further supported by the shaft and rotatably abutted against the pressing lever by a predetermined spring means, and usually the rotary lever is attached to the door. The door is locked when a predetermined part of the lever comes into contact with the door, and when the operating lever is rotated, the rotating lever is pressed by the pressing lever and rotates against the spring means, thereby closing the door. The door is constructed with a locking mechanism that can be opened and unlocked, and the door is locked mechanically between the rotating lever, compared to conventional magnetic door locks. 7. Even when there is floor vibration, the locked state is reliable and stable, and even if the door is closed with strong force, there is no problem such as the door opening due to reaction for the same reason. If a pair of rotary levers is provided on the left and right, and the two operating levers are operated in sequence, the system can be applied not only to single-panel doors but also to left-right and double-hung doors, widening the scope of application.
Moreover, it has features such as being able to operate the left and right doors independently, making it even more convenient.

[Brief explanation of drawings]

Figures 1A and 1B are a front view and a side view of a cabinet to which one embodiment of the door locking device of the present invention is applied, respectively;
Figures A to D are respectively a front view, a plan view, and a side view of the main parts of the cabinet, and a side view showing the operating state of the door, and Figure 3 is a longitudinal sectional view of the tile ejecting pin mechanism of the cabinet.
4A to 4C are a side view, a front view, and a bottom view of the frame of the cabinet, respectively, FIGS. 5A and 5B are a back view and a bottom view of the door control mechanism of the cabinet, respectively, and FIGS. 6A to C
7A-C are a side view, back view, and bottom view of the locking mechanism of the door control mechanism, FIGS. 7A-C are a side view, back view, and bottom view of the bracket of the control mechanism, and FIGS. 8A and B are respectively Similarly, the back view and bottom view of the cover bracket, Figure 9A,
B shows a front view and a side view of the shaft, FIGS. 10A-C show a front view, vertical sectional view, and back view of the operating lever, and FIGS. 11A-C show a front and side view of the catching lever. Figures 12A and 12B are the front and bottom views of the right stop lever, respectively.
Figures A and B are the same front view and bottom view of the left stop lever, respectively, and Figures 14A-C are the same front view, side view, and bottom view of the spring, respectively, and Figure 15A is the same. B is a front view and a side view of the ring spacer, FIGS. 16A-C are a top view, front view, and side view of the cylinder lock, respectively, and FIG. 17 is a top view of the key, and FIGS. 18A-C are respectively a top view and a side view of the ring spacer. are a back view, a side view, and a bottom view of the key stopper, respectively. 1... Cabinet, 2... Cabinet body, 3... Frame, 3 b, 24
b, 30a...Oval hole, 3C24d...
...Guide hole, 4,5...Door, 9...
・Pin mechanism, 11.44...Pin, 13...
... Door control mechanism, 14 ... Axis suspension hinge, 2
1...Bundle plate, 21a, 34b...
・Hook part, 22...Lock mechanism, 23...
... Locking mechanism, 24 ... Bracket, 28.
...Shaft, 29...Operation lever, 3
0... Catching lever (pressing lever),
30b...Arm part, 31.33...Stop lever (rotating lever), 32...Cap, 42...Cylinder lock, 42 C...・・・・・・
Keyway, 45... Nut, 46... Key stopper 46 a, 46 b... U-shaped portion, 46 C... Oval hole.

Claims (1)

[Scope of utility model registration request] A door is attached to the housing so that it can be opened and closed in a rotational manner, a locking mechanism body is attached to the housing, a shaft is supported by the body, and an operating lever and a pressing lever are respectively fixed to the shaft. The door is further supported by a rotary lever which is rotatably biased into contact with the pressing lever by a predetermined spring means, and the door is normally locked when a predetermined portion of the door comes into contact with the rotary lever. and a locking mechanism capable of opening and operably unlocking the door by rotating the operating lever when the operating lever is rotated and the rotating lever is pressed by the pressing lever and rotates against the spring means. A door locking device consisting of: