JP2604608Y2 - Door locking device for storage - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a locking device for a door in a storage or the like in which a door can be locked with a latch on the upper and lower edges of a door of a cabinet body, especially when the door is locked. The present invention relates to a door locking device that does not cause damage to the latch mechanism because only the upper holding tube runs idle even if is pressed, causing slippage on the corrugated cam surfaces at the ends of the upper and lower holding tubes.

[0002]

2. Description of the Related Art As a device for locking a door in a storage room or the like,
A device in which a locking device having a complicated structure of a holding tube, an operating rod and the like can be attached to a door very easily has been known (see Japanese Utility Model Publication No. 2-6207).

[0003]

However, in the above prior art, when the latch operating portion is in the locked state,
If the latch lever is pushed by mistake, the operating rod will bend and bend due to its long length, and will be released even if locked. Alternatively, there has been a problem that the engagement piece of the holding tube is broken or bent, and the role of the lock is lost. In view of such circumstances, the present invention provides a door locking device that divides a holding tube and employs upper and lower holding tubes formed with a wavy cam surface so that each engagement end is symmetrical. It is intended to provide.

[0004]

According to the present invention, in order to solve the above-mentioned problems, according to the present invention, a pull cover is fixed to the back side of the door, and the pull cover has an upper holding tube. Hold down
The upper holding tube has an engaging piece protruding from the outer peripheral surface, and the lower holding tube has a lower tube.
The holding tube has a square hole in the longitudinal direction, and a stop rib protrudes from the outer peripheral surface. The square hole allows an operating rod having a square cross section to be held therethrough. Vertical and front
At the lower end of the upper holding tube and the upper end of the lower holding tube, a wavy cam surface is formed symmetrically so that the upper and lower holding tubes rotate and come into close contact with each other by the operation of the pressing block. Shimoho
A return spring for upward the lower holding tube to the lower end of the lifting tube is provided,
A handle plate having a handle opening and a handle plate portion is provided on the front surface of the door, and the operating piece is pressed on the back surface of the handle plate portion by pressing the engaging piece of the upper holding tube with a pressing portion at the tip. A configuration is adopted in which a pressing block that rotates and releases the latch provided at the end of the operating rod is slidably provided.

[0005]

[Function] The present invention adopts the above configuration,
If the latch lever is accidentally pressed with an excessive force in the locked state of the latch operating portion, the lower end of the upper holding tube and the upper end of the lower holding tube are symmetrically formed with a wavy cam surface,
Since the engagement piece is stopped by the lock, the lower holding tube does not rotate, and the lower holding tube separates downward with reference to each other's wavy cam surfaces (see FIG. 7). Accordingly, the upper holding tube slightly idles to prevent a load from being applied, and as a result, does not damage the latch mechanism, so that the latch function is sufficiently performed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In FIG. 1, 1 is a cabinet body, 2,
Reference numeral 2 'denotes a double door, and a pull cover 4 made of a synthetic resin is desirably held between the bent portion 3' at the open end of the front plate and the door back plate 5 on the back side of the door plate 3 of the right door 2. Installed.
The puller cover 4 is made of synthetic resin and held as shown in FIG.
The lower holding tube 8 has a tube 6 and a lower holding tube 8. The upper holding tube 6 has an engaging piece 6 b protruding at an appropriate position on the outer peripheral surface. The lower holding tube 8 has a rectangular hole 6 a in the longitudinal direction. projecting stop ribs 15 in the appropriate position on the surface, the angle to the hole 6a allowed through holding the operating rod 7 of square cross section, freely and Tate設to further penetrate the upper holding pipe 6 rotates, the pull tab cover 4 The upper and lower plates are respectively supported. A latch 9 is fixed to the upper and lower ends of the operating rod 7 (see FIGS. 1 and 2). Release the latch 9 and return spring 1
The door 2 is engaged with the edge of the engaging hole 11 formed in the frame plate 24 of the door of the cabinet main body through the door 0, and a pull plate 16 having a pull opening 17 and a handle plate portion 18 on the front surface of the door 2. A pressing portion 23 at the tip is provided on the back surface of the handle plate portion 18.
A pressing block 21 for pressing the engaging piece 6b of the upper holding tube 6 to rotate the operating rod 7 to release the latch of the latch 9 is slidably provided (FIG. 6).
reference). The latch 9 is repelled by a return spring 10 wound around the upper holding tube 6 and locked by engagement holes 11 formed in upper and lower frame plates 1 a of the cabinet body 1. (See FIGS. 1 and 6).

Next, a specific embodiment of the present invention will be described with reference to FIGS. 2 to 5 and FIG. As shown in the exploded perspective view of FIG. 2, a pull cover 4 is provided on the back end (not shown) of the door 2, and the pull bar cover 4 is provided with an upper and lower frame plate 13 for the operating rod 7. The operating rod 7 having a rectangular cross section is penetrated and held in the hole 14, and the upper and lower holding pipes 6 and
8, a return spring 10 and a return spring 10 'are provided between the ends of the upper and lower holding tubes 6, 8 and the upper and lower frame plates 13 in a resilient state. The lower holding tube 8 has a lock 27
The stop rib 15 for stopping the rotation by the operation of the operation piece 28 is provided. Further, the upper and lower holding tubes 6,
8, the upper and lower engaging ends are symmetrical wavy cam surfaces 1
2 are formed, and are tightly engaged with each other to be in close contact with each other (see FIGS. 3 and 4). In the locked state, the engaging piece 6b of the upper holding tube 6 is rotated by pressing the latch lever with the pull plate 16. When the lower holding tube is moved, the lower holding tube cannot rotate since the operating piece 28 of the lock 27 is in a stopped state in relation to the stop rib 15. However, with the stop rib 15 and the operating rod 7 as guides, the lower return spring 10 'slides while compressing and moves downward. This can be gradually moved until the projections of the wavy cam surfaces 12 formed at the ends of the upper and lower holding tubes 6 and 8 are engaged with each other. Therefore, even if the latch lever is operated by mistake during locking, there is no risk of damaging the latch mechanism. The upper and lower holding tubes may be connected by connecting the lower end of the upper holding tube 6 with a thicker connecting portion 25 so as to cover the upper end of the lower holding tube 8 as shown in the drawing.
Various configurations can be employed. FIGS. 3 to 5 show the configuration of the present invention described above corresponding to each operation stage, and the one shown in FIG. 3 is not locked and does not operate the latch lever. This shows a free state. FIG. 4 shows a locked state where the latch lever is not operated. The one shown in FIG. 5 is in the locked state, and when the latch lever (corresponding to the pressing block 21) is pressed by mistake, the upper holding tube among the upper and lower holding tubes 6 and 8 is rotated by the latch lever. However, since the operating piece 28 of the lock 27 is maintained in a state in which the operating piece 28 of the lock 27 is not rotated by the stop rib 15, the lower holding tube 8 necessarily has a curved portion of the wavy cam surface 12 at the end of the upper and lower holding tubes 6, 8. The lower holding tube 8 guides the operating rod 7 and the stop rib 15 while
Is slid downward to avoid breaking force.
Further, as shown in FIG. 6, the puller cover 4 is locked to the bent portion of the back plate by the bent portion 4a. 16 is a handle opening 1 attached to the door front plate 3 in the handle cover 4
7 and a handle plate 18 made of a synthetic resin having a handle plate portion 18.
9 is engaged and is locked and attached to a locking projection 20 provided at an appropriate position on the edge. Reference numeral 21 denotes a substantially rectangular latch release pressing block made of a synthetic resin provided in the puller plate 16, which is slidably fitted on the inner wall 22. 6b and the latch 9
Is locked in the engaging hole 11 of the cabinet body 1, the groove edge of the leading end of the concave groove provided on the front surface (the door front plate 3 side) of the pressing block 21 is locked on the outside of the edge of the pull plate 16. The rear end of the pressing block 21 extends to almost the same position as the inner edge of the handle plate portion 18. Reference numeral 27 denotes a lock provided below the puller plate 16 (see FIGS. 2 and 4 to 6). The lock 27 is housed in the puller cover 4, and when locked, the operating piece 28 rotates and the operating rod 7 rotates. , So that the locked state is the same. When the door 2 is closed, the inner edge of the left door 2 ′ in FIG. 1 enters the inside of the right door 2, so that the left door 2 ′ is also locked only by locking the right door 2. You. The state shown in FIG. 7 is a state in which the projections of the corrugated cam surface 12 of the connecting part of the upper and lower holding tubes 6 and 8 described in FIG. Is enlarged.

Next, the operation will be described with reference to FIGS. 2, 4 and 5. Since this door locking device has the above-described structure, the pressing block 21 is moved sideways with the finger inserted through the pulling opening 17. When pressed in the direction (arrow A direction), the engagement piece 6b is pressed by the pressing portion 23 at the tip, and the upper and lower holding tubes 6, 8 and thus the operating rod 7 are pressed against the return spring 10 by the arrow B.
The latch 9 pivots in this direction, and the latch 9 pivots and disengages from the engagement hole 11 of the cabinet body 1, so that the door 2 can be opened by pulling the handle plate portion 18 toward the user. Press block 2
When 1 is pushed in, the rear edge 26 of the groove (see FIG. 6) is stopped by the front inner edge of the pull plate 16. The engaging piece 6b of the upper holding tube 6 is formed to protrude obliquely in the direction of the pressing block 21 so that the latch 9 can be rotated as much as possible while being pressed by the pressing block 21, and the door 2
Are provided so as to be guided inside the door surface plate 3. Further, when the finger is released from the pressing block 21, the return spring 10 returns to the original position. If the engaging piece 6b of the upper holding tube 6 is erroneously pushed by the pressing block 21 (latch lever) at the time of locking, the engagement relationship between the operating rod 7 and the upper holding tube 6 has a slight margin. The operating rod 7 does not rotate, but the upper holding tube 6 slightly rotates. In addition, as described above, the lower holding tube is gradually moved downward by the corrugated cam surfaces formed at the ends of the upper and lower holding tubes 6 and 8, thereby preventing the latch mechanism from being damaged. It goes without saying that the operating rod 7 and the lower holding tube 8 are integrated in the turning direction due to the engagement relationship. When closing door 2,
By simply rotating the door 2 inward, the inclined back surface 29 of the latch 9 engages with the hole edge of the engagement hole 11, and the latch 9 is rotated against the return spring 10 to move the inside of the engagement hole 11. After passing through, it is returned by the return spring 10 and again locked on the edge of the engagement hole 11 (see FIG. 6). Further, the operating piece 28 is
Is rotated as shown by arrow C to prevent the operation rod 7 from rotating,
The door 2 is similar to the locked door (see FIG. 4). Further, the return spring 10 'functions to return the upper and lower holding rods 6, 8 to their original positions when the pressing of the pressing block 21 is released. The latch 9 may be provided only on one of the upper and lower sides of the door 2 depending on the size of the cabinet.

[0009]

According to the present invention, the following effects can be obtained based on the above configuration. (1) Even if the latch lever is pushed by mistake in the locked state, the latch mechanism is not damaged.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a cabinet showing one embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a main part of a puller operating unit in the embodiment.

FIG. 3 is a front view showing a free state of a latch operating portion in the embodiment.

FIG. 4 is a front view showing a locked state of a latch operating portion in the embodiment.

FIG. 5 is a front view showing a state in which the latch lever is erroneously pressed in the locked state of the latch operating portion in the embodiment.

FIG. 6 is a sectional view taken along line XX in FIG. 3;

FIG. 7 is an enlarged detail front view of a portion A in FIG. 5;

[Explanation of symbols]

1 cabinet body 2, 2 'door 3 door door plate 4 handle cover 5 door back plate 6 upper holding tube 7 operating rod 8 lower holding tube 9 latch 10 Return spring 10 'Return spring 11 Latch engagement hole 12 Wavy cam surface 13 Upper
Lower frame plate 14 hole 15 stop rib 16 handle plate 17 handle opening 18 handle plate 19 mounting groove 20 locking projection 21 press block 22 inner wall 23 ‥‥ Pressing part 24 ‥‥ Frame plate 25 ‥‥ Connecting part 26 ‥‥ Rear edge 27 ‥‥ Lock 28 ‥‥ Operation piece 29 ‥‥ Slope back

Claims (1)

(57) [Scope of request for utility model registration] 1. A pull cover 4 is fixedly provided on the back side of the door 2,
The puller cover 4 has an upper holding tube 6 and a lower holding tube 8,
The upper holding tube 6 has an engaging piece 6b protruding from the outer peripheral surface thereof.
8 has a square hole 6a in the longitudinal direction and a stop rib 1 on the outer peripheral surface.
5 projected to the angle to the hole 6a allowed through holding the operating rod 7 of square cross section, freely and Tate設to further penetrate the upper holding pipe 6 rotates, the lower end of the upper holding pipe 6, under The upper and lower holding tubes 6, 8 are rotated by the operation of the pressing block 21 on the upper end of the holding tube 8 so that the upper and lower holding tubes 6, 8 come into close contact with and separate from each other.
Together with symmetrically formed, provided a return spring 10 'is moved upward the lower holding tube 8 to the lower end of the lower holding tube 8, the door 2
Is provided on the front surface thereof with a handle opening 17 and a handle plate portion 18. On the back surface of the handle plate portion 18, the engaging piece 6b of the upper holding tube 6 is pressed by a pressing portion 23 at the tip. A door in a storage or the like, wherein a pressing block 21 is provided so as to be slidable so as to rotate the operating rod 7 and release the latch of the latch 9 provided at the end of the operating rod 7. Locking device.