JPH0589757U - Door locking device - Google Patents

Abstract

(57) [Summary] [Structure] A pull tab cover is fixedly provided on the back side of the door, and a holding tube is rotatably provided vertically on the pull tab cover, and at the end of the operating rod 7 engaged with the holding tube. The first latch 32 is fixedly mounted via the latch receiver 12, and the first projecting piece 33 projecting from the upper portion of the first latch 32 is drilled in the second latch 34 to form the first elongated hole 35.
The second elongated hole 36 formed in parallel with the first elongated hole 35 of the second latch 34 and the second protruding piece 37 of the third latch 9
A door provided with a latch assembly that is engaged with the third latch 9 and loosely fits a third projecting piece 38 projecting from the lower portion of the third latch 9 into a third latch fitting hole 39 formed in the latch receiver 12. Locking device. [Effect] In response to the current physical condition, the puller cover has to be enlarged. Corresponding to this, by incorporating a special latch assembly, the function of the latch is fully achieved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door locking device for a storage cabinet or the like, which can be locked by latches on the upper and lower edges of a cabinet body doorway.

[0002]

[Prior Art]

 As a locking device for a door of a storage cabinet or the like, a locking device including a holding tube having a complicated structure and an operating rod, etc., which can be attached to the door extremely easily, has been known from the past. -6207).

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned prior art, the door locking device is housed in the pull tab cover. In this locking device, an operating rod for operating a latch is housed in a pulling part provided at the end of the door. Therefore, in order to minimize the relationship between the latch operating rod and the latch when the door is locked to the main body side with the latch, the latch is directly attached to both ends of the operating rod in order to minimize the latch rod. However, as a result, the size of the pull tab must be small enough to accommodate this latch receiver. Therefore, there is a problem in that it is necessary to operate in a very cramped state when inserting a hand into the pull tab and operating it. In view of this point, the present invention enlarges the pull tab cover, and does not directly attach the latches to the upper and lower sides of the operating rod, but attaches the latch through the latch assembly that indirectly operates the latch to allow the latch to function. Thus, an object of the present invention is to provide a door locking device in which a pulling part becomes large as a result, and a person with good growth can operate the latch without any problem.

[0004]

[Means for Solving the Problems]

 The present invention is intended to solve the above-mentioned problems, and in a door locking device, a pull tab cover is fixedly provided on the back side of the door, and the pull tab cover has a rectangular hole in the longitudinal direction and has an outer periphery. A holding tube having an engaging piece protruding from the middle portion of the surface is rotatably provided vertically, and an operating rod having a rectangular cross section is held through the square hole, and a latch receiver is provided at the end of the operating rod. The first latch is fixed through the first latch, and the first projecting piece drilled in the upper portion of the first latch is engaged with the first slot formed in the second latch, and the first slot of the second latch is engaged. The second elongated hole formed in parallel with the second latch is engaged with the second protrusion of the third latch, and the third protrusion protruded from the lower part of the third latch is drilled in the latch receiver. The latch assembly assembled by loosely fitting in the fitting hole is resiliently springed by the return spring, and the third latch 9 described above is attached to the edge of the engaging hole formed in the frame plate of the cabinet body doorway. The door is provided with a pull tab having a pull opening and a hook plate on the front surface of the door, and the engaging piece of the holding tube is attached to the back of the hook plate with a pressing portion at the tip. A structure is adopted in which a pressing block that is pressed to rotate the operating rod to unlock the third latch 9 of the latch assembly is slidably provided.

[0005]

[Action]

 The present invention, by adopting the above configuration, allows the ratchet to be operated without directly attaching the latch to the latch operating rod so that the pull tab portion is enlarged and there is no trouble in inserting fingers. The latch assembly is used for this purpose.

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In FIG. 1, 1 is a cabinet main body, 2 and 2'are double doors, and a pull cover 4 preferably made of synthetic resin is bent on the back side of the door cover plate 3 of the right door 2 at the bent end of the cover plate. It is held and attached between the part 3'and the door back plate 5. As shown in FIG. 5, the pull tab cover 4 has a rectangular hole 6a in the longitudinal direction, and a synthetic resin holding tube 6 having an engaging piece 6b projecting from the middle portion of the outer peripheral surface of the pull tab cover 4 is arranged above and below the pull cover 4. Are vertically supported so as to be rotatable and supported by respective plate portions. An operating rod 7 having a rectangular cross section is pierced and held in the square hole 6a, and a latch assembly 8 is fixedly mounted on the upper and lower ends of the operating rod 7 via a latch receiving member 12 (see FIG. 7). The latch assembly 8 has a first latch 32 fixed to the end of the operating rod 7 via a latch receiver 12, and a first protrusion 33 formed on the upper portion of the first latch 32 to form a second protrusion 33. The second elongated hole 36 formed in parallel with the first elongated hole 35 of the second latch 34 is engaged with the first elongated hole 35 formed in the latch 34, and the second projecting piece 37 of the third latch 9 is formed. It is assembled by engaging and engaging the third projecting piece 38 projecting from the lower portion of the third latch 9 with the third latch fitting hole 39 formed in the latch receiver 12 in a loose manner. The latch assembly 8 is spring-backed by the return spring 10 to engage the third latch 9 with the hole edge of the engagement hole 11 formed in the frame plate 26 of the doorway of the cabinet body 1 and to lock the door 2 of the door 2. A pull tab 16 having a pull opening 17 and a hook plate portion 18 is provided on the front surface, and a push portion 23 at the tip is pressed against the engaging piece 6b of the holding tube 6 on the back surface of the hook plate portion 18. A pressing block 21 is provided slidably so that the operating rod 7 is rotated to release the locking of the third latch 9 of the ratchet assembly 8 (see FIG. 5). The latch assembly 8 is elastically repelled by the return spring 10 wound around the holding tube 6 and locked to the edges of the engaging holes 11, 11 formed in the frame plate 1a above and below the doorway of the cabinet body 1. (See FIGS. 1 and 4).

In FIGS. 2, 3, and 4, 12 is a synthetic resin latch receiver attached to the upper and lower bent grooves of the door 2, and 40 is provided on the pull tab cover 4 located below the holding tube 6. It is a retaining piece for the return spring 10. Further, the rotary stopper of the holding tube 6 provided on the inner surface of the pull tab cover 4 is well known in the art and therefore not shown. Further, as shown in FIG. 5, the pull tab cover 4 is locked to the bent portion of the back plate by the bent portion 4d. The latch receiver 12 has one side edge locked to the upper edge of the bent portion 3'of the open end portion of the door face plate 3 of the door 2, and the locking protrusion 13 protruding from the other side portion. Is engaged with and attached to an engagement hole 15 provided in the upper bent plate portion 14 of the door face plate 3 (see FIGS. 3 and 4). Reference numeral 16 denotes a synthetic resin pull plate having a pull handle opening 17 attached to the door cover plate 3 and a handle plate portion 18 inside the pull handle cover 4, and the pull handle plate 16 is provided at the edge of the opening formed in the door cover plate 3. It is mounted by engaging the mounting groove 19 at the edge (see FIG. 5) and by locking the locking projection 20 provided at a proper position on the edge. Reference numeral 21 denotes a substantially rectangular latch release pressing block made of a synthetic resin provided in the pulling plate 16, which is slidably fitted on the inner wall 22 and the pressing portion 23 at the tip is engaged with the intermediate portion of the holding tube 6. A groove 24 at the tip of a groove 24 provided on the front surface of the pressing block 21 (on the door front plate 3 side) with the third latch 9 engaged with the engaging piece 6b and the third latch 9 locked in the engagement hole 11 of the cabinet body 1. Locks on the outside of the edge of the pulling plate 16, and the rear end of the pressing block 21 extends to almost the same position as the inner edge of the handle plate 18 (see FIG. 5). Reference numeral 27 is a lock provided below the pull tab plate 16 (see FIG. 2), which is housed in the pull tab cover 4, and when locked, the operating piece 28 rotates to prevent the operating rod 7 from rotating, so It will be the same as the locked state. Note that when the door 2 is closed, the inner edge 29 of the left door 2'in FIG. 1 enters the inside of the right door 2, so that the left door 2'can be engaged simply by locking the right door 2. Be stopped.

Next, the operation will be described with reference to FIG. 5. Since the door locking device has the structure as described above, the pressing block 21 is moved laterally (in the direction of arrow A) with the fingers inserted from the pull handle opening 17. When the pressing piece 23 is pressed, the engaging piece 6b is pressed by the pressing portion 23 at the tip and the holding tube 6, and thus the operating rod 7 rotates in the direction of the arrow B against the return spring 10, and accordingly the upper and lower first Since the third latch 9 rotates through the latch 32 and the second latch 34 and disengages from the engagement hole 11 of the cabinet body 1, the door 2 can be opened by pulling the handle plate portion 18 toward you. When the pressing block 21 is pushed in, the rear edge 30 of the concave groove 24 is locked by the front inner edge of the pulling board 16 and stops. The engaging piece 6b of the holding tube 6 is provided so as to project in an inclined shape toward the pressing block 21, and while being pressed by the pressing block 21, the engaging piece 6b is pushed through the first latch 32 and the second latch 34 to the third portion. The latch 9 pivots as much as possible to be released, and is provided so as to be guided so as to be guided inside the door face plate 3 of the door 2. Further, when the finger is released from the pressing block 21, the return spring 10 restores the original position. When the door 2 is closed, the inclined back surface 31 of the third latch 9 is engaged with the hole edge of the engagement hole 11 by simply rotating the door 2 inward, and the third latch 9 is opposed to the return spring 10. Then, it is rotated to pass through the inside of the engaging hole 11, and after passing, it is returned by the return spring 10 and is locked again at the edge of the engaging hole 11 (see FIG. 4). Further, the lock 27 rotates the operating piece 28 as shown by an arrow C to prevent the operating rod 7 from rotating, and the door 2 becomes the same as when the door 2 is locked (see FIG. 2). The latch assembly 8 may be provided on either the upper or lower side of the door 2 depending on the size of the cabinet or the like.

[0010]

The present invention can obtain the following effects based on the above configuration. (1) In response to the current physical condition, the puller cover has to be enlarged. By incorporating a special latch assembly corresponding to this enlarged puller cover, the latch function is fully achieved. (2) Since the second latch also serves as a cover, dust and the like are less likely to enter, resulting in smooth operation.

[Brief description of drawings]

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

FIG. 2 is a rear view of the pull tab operating portion in the embodiment.

FIG. 3 is a rear view of the latch actuating portion in the embodiment.

FIG. 4 is a cross-sectional plan view of a latch actuating portion in the embodiment.

5 is a sectional view taken along line XX in FIG.

FIG. 6 is a perspective view of a latch assembly according to the embodiment.

FIG. 7 is an exploded perspective view showing a related configuration of a latch assembly and an operating rod in the embodiment.

[Explanation of symbols]

1 ... Cabinet body 2, 2 '... Door 3 ... Door front plate 4 ... Puller cover 5 ... Door back plate 6 ... Holding tube 7 ... Operating rod 8 ... Latch assembly 9 ... 3rd Latch 10 ... Return spring 11 ... Latch engagement hole 12 ... Latch receiver 13 ... Locking convex portion 14 ... Upper bent plate portion 15 ... Engagement hole 16 ... Pulling board 17 ... Pulling opening 18・ ・ ・ Hand plate 19 ・ ・ ・ Mounting groove 20 ‥ Locking projection 21 ‥ Pressing block 22 ‥ Inner wall 23 ‥ Pressing portion 24 ・ ・ ・ Recessed groove 25 ‥ Groove edge 26 ・ ・ ・ Frame plate 27 ・ ・ ・ Lock 28 Operating piece 29 Internal edge 30 Rear edge 31 Inclined back surface 32 First
Latch 33 ... 1st protrusion 34 ... 2nd
Latch 35 ... 1st long hole 36 ... 2nd
Long hole 37 ... 2nd protrusion 38 ... 3rd
Projecting piece 39 ... third latch fitting hole 40 ... latching piece

Claims (1)

[Scope of utility model registration request] 1. A pull cover 4 is fixedly provided on the back side of the door 2,
The pull tab cover 4 has a rectangular hole 6a in the longitudinal direction, and a holding tube 6 having an engaging piece 6b projecting from the middle portion of the outer peripheral surface is rotatably provided vertically. The rectangular hole 6a has a rectangular cross section. Of the operating rod 7 is held through, the first latch 32 is fixed to the end portion of the operating rod 7 via the latch receiving member 12, and the first projecting piece 33 drilled on the upper portion of the first latch 32. Is engaged with the first elongated hole 35 formed in the second latch 34, and the second elongated hole 36 formed in parallel with the first elongated hole 35 of the second latch 34 is inserted into the second protrusion of the third latch 9. A third projecting piece 38, which is engaged with the piece 37 and is projected on the lower portion of the third latch 9, is formed on the latch receiver 12 by the third projecting piece 38.
The latch assembly 8 assembled by being loosely fitted in the latch fitting hole 39 is elastically urged by the return spring 10 and the third latch is provided at the edge of the engaging hole 11 formed in the frame plate 26 at the doorway of the cabinet body 1. 9, the door 2 is provided with a pull tab 16 having a pull opening 17 and a hook plate portion 18 on the front surface thereof, and the back portion of the hook plate portion 18 is provided with a pressing portion 23 at the tip thereof to hold the holding member. A push block 21 is provided slidably so as to push the engagement piece 6b of the pipe 6 to rotate the operating rod 7 and release the lock of the third latch 9 of the latch assembly 8. Characteristic door locking device.