JPH05295939A - Door lock mechanism for furnitures such as locker - Google Patents

Abstract

PURPOSE:To prevent a furniture body from being damaged due to collision with a lock member, etc., by controlling a mis-operation, in a door open area, of key bars engaged with the furniture body in connection with the lock member and inserted into a door in an unlock position. CONSTITUTION:When a door is closed completely, the outer side of a turning element 61 is made in contact with a contact surface 82 of a cap 8 and the turning element 61 rotates the cap 8 to an escape position to release a lock member 4. Accordingly the top 42 of the lock member 4 is engaged with the engaging recess 81 of the cap 8. Also the lock member 4 is rotated to rotatably deviate the deviated positions P1 and P2 of the lock member 4. Next, a key bar 5a is raised to protrude its top end from the door and to engage with a downward engaging hole in a body and also to protrude its bottom end from it and to engage with an upward engaging hole. Then the protruded ends of the upper and lower key bars 5a and 5b are pushed in the door by the key operation in reverse direction to enable opening of the door. Consequently the door is opened, and the turning element 61 is released from restriction by the cap 8 and returned from the escape position to a locking position by an energizing force of a spring 62 to insert and lock an inner rotational end to a notched section 43.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock mechanism applicable to various furniture such as lockers and storages.

[0002]

2. Description of the Related Art For example, as a door lock mechanism provided on a door of a locker, a lock mechanism provided on the door and having its operating end operated in response to a key operation, and a furniture body urged by the operating end of the lock mechanism. And a sickle-shaped lock member that operates between a locked position that engages with the non-locked position that disengages the lock member, and reciprocates in the vertical direction in conjunction with the lock member, and at the locked position, protrudes from the door and the furniture main body. And a pair of upper and lower key bars that engage with each other and are retracted into the door at the unlocked position to be disengaged from the furniture main body.

[0003]

However, in such a structure, even if the key operation is performed in a state where the door is not completely closed, the lock member and the key bar are projected. However, if the door is accidentally closed in this state, the protruding end of the key bar will violently collide with the opening end surface of the furniture body, causing not only a large noise but also the peeling and deformation of the painting on the furniture body. There is a problem.

An object of the present invention is to reliably eliminate such a problem with a simple structure.

[0005]

The present invention takes the following means in order to achieve such an object. That is, a door lock mechanism for furniture such as a locker according to the present invention includes a lock mechanism that is provided on the door and has an operating end that operates in response to a key operation, and a lock mechanism that is urged by the operating end to engage with the furniture body. A lock member that operates from a locked position to a non-locked position where the engagement is disengaged, and a reciprocating motion in the up-and-down direction in conjunction with the lock member, and at the lock position, the lock member projects from the door and engages with the furniture main body. In the non-locked position, the lock bar moves directly into the door and is disengaged from the furniture main body, and the lock member operates directly in the door open area where the door is not completely closed and operates using the door opening / closing operation for the furniture main body. Alternatively, it is characterized by comprising a malfunction preventing mechanism for indirectly locking.

In the case where the lock mechanism has an actuating end for reciprocating rotation, for example, a sickle-shaped one that rotates by connecting its base end portion to the actuating end is used as the lock member. The operating end of the lock mechanism may be directly connected to the lock member, or an appropriate interlocking mechanism may be interposed therebetween.

The base end of the key rod may be pivotally attached to an eccentric position such as a special disk which rotates in response to the operating end of the lock mechanism.
In order to simplify the structure, it is preferable to pivotally attach the base end of the key rod to the eccentric position of the base end of the lock member.

To simplify the manufacture of the furniture body,
It is preferable that a cap having an engaging recess is provided on the inner surface of the opening of the furniture main body so that the tip of the lock member is engaged with the engaging recess.

As a preferable mode of the malfunction prevention mechanism,
A rotator that is pivotally attached to the door side and is rotatable from a locking position that prevents rotation of the lock member in the lock position direction to a retracted position that cannot come into contact with the lock member, and this rotator. A spring for urging the rotative force in the locking position direction and a spring for abutting against the rotator when the door is fully closed to rotate the rotator to the retracted position against the urging force of the spring. An example of the furniture includes a contact surface on the furniture body side.

To facilitate the assembly and maintenance, the lock mechanism, the lock member, and the key rod are held by the door body, and the lock mechanism, the lock member, and the base end portion of the key rod are covered. It is preferable that the rotator is pivotally attached to a key cover detachably attached to the back surface of the door body.

In order to promote unitization, it is desirable to also attach a latch mechanism to the key cover.

[0012]

With this structure, even if the key is operated while the door is not completely closed, the operation of the lock member is prohibited by the function of the malfunction prevention mechanism. Therefore, the key bar cannot operate, and it does not project from the door.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The embodiment shown in FIG. 1 is a furniture body 1 according to the present invention.
It is a case where it is applied to a locker L in which the door 2 is hinged.

1 to 3, a locker L is provided on a door 2 and has a lock mechanism 3 whose operating end 3a operates in response to a key operation, and a furniture main body urged by the operating end 31 of the lock mechanism 3. 1, a lock member 4 that operates between a locked position a that is engaged with 1 and a non-locked position b that is disengaged, and a reciprocating motion in the up-and-down direction linked to this lock member 4 and at the locked position a, the door 2 A key bar 5 that projects from the furniture body 1 and engages with the furniture body 1 and is retracted into the door 2 at the non-locked position b and then withdrawn from the furniture body 1; 2 includes an erroneous operation preventing mechanism 6 that directly or indirectly locks the operation of the lock member 4 in the door opening region where the door is not completely closed.

More specifically, the door 2 is, as shown in FIG.
A door main body 23 made of sheet metal including a front plate 21 and a back plate 22 is provided, and a grip 24 is provided on the side opposite to the hanging side of the front plate 21 and a rectangular shape is provided in the vicinity of the grip 24 of the back plate 22. Window portion 25 is formed. And the window 2
5, a synthetic resin key cover 7 is detachably mounted, and the lock mechanism 3, lock member 4,
Also, the base end 51 of the key rod 5 is accommodated.

As shown in FIG. 2, the key mechanism 3 has a keyhole 32.
Is attached to the front plate 21 by exposing it to the front, and by rotating a key (not shown) inserted in the key hole 32, a shaft-shaped working end having a square cross section protruding to the rear end. 31 is capable of rotating in the forward and reverse directions within an angle range of approximately 180 °. Since the internal structure is normal, the description is omitted.

The lock member 4, as shown in FIGS.
The base end portion 41 is a sickle-shaped member that rotates by directly connecting it to the working end 31, and the base end portion 41 has a semicircular shape.
It is possible to rotate between a locked position a shown by an imaginary line and an unlocked position b shown by a solid line. On the inner side surface of the opening of the furniture main body 1, a vertically elongated slender synthetic resin cap 8 having an engaging recess 81 is provided, and the tip 42 of the lock member 4 rotated to the lock position a is engaged with this. It is adapted to engage with the recess 81. The base end 51a of the upper key bar 5a is pivotally attached to the first eccentric position P1 of the base end portion 41 of the lock member 4, and the lower key is attached to the second eccentric position P2 of the base end portion 41. Base end 5 of rod 5b
1b is pivotally attached. The upper key bar 5a is guided upward in the door body 23, and is held so that the upper end portion 52a thereof can be projected and retracted upward at the upper end portion of the door body 23.
The lower key bar 5b is guided downward in the door body 23, and the lower end portion 52b thereof is held in the door body 23 so as to project and retract downward.

As shown in FIGS. 2 to 5, the malfunction preventing mechanism 6 is pivotally attached to the key cover 7 of the door 2 and the locking position c (FIG. 2) for preventing the locking member 4 from rotating in the locking position a direction. (See 7)
To a retracted position d (see FIG. 6) that cannot come into contact with the lock member 4 and the rotator 6
The sling 62 that urges 1 to rotate in the direction of the locking position c and the sling 62 that abuts on the rotator 61 when the door 2 is fully closed.
And a contact surface 82 on the furniture body 1 side for rotating 1 to the retracted position against the urging force of the spring 62. Specifically, the rotator 61 has a central portion 61.
a is pivoted horizontally on a horizontal base 71 of the key cover 7 via a vertical shaft 61b so that the outward rotation end 61c extends outside the door 2 at the locking position c. While protruding, the inward rotating end 61d is located directly below the notch 43 provided on the outer periphery of the base end portion 41 of the lock member 4. The front surface of the lower end portion of the cap 8 serves as the contact surface 82.

A latch mechanism 9 is provided above the key cover 7. The latch mechanism 9 has a holding cylinder portion 91 that opens laterally at the upper end portion of the key cover 7, and
A latch claw 92 is held by the holding cylinder portion 91 so as to be capable of protruding and retracting, and the latch claw 92 is elastically biased in the protruding direction by a spring (not shown) housed in the holding cylinder portion 91. A cam surface 83 with which the latch claw 92 engages when the door 2 is closed is formed at the upper end of the cap 8. The cam surface 83 is formed in a triangular shape in transverse cross section in which the vertical center portion of the cap 8 is raised.

Next, the operation of this embodiment will be described. First, when the door 2 is completely closed, as shown in FIG. 6, the outer rotation end 61c of the rotator 61 contacts the contact surface 82 provided on the cap 8 of the furniture body 1, It is rotated to the retracted position d. As a result, the inward rotating end 61d of the rotator 61 is retracted to a position where it cannot interfere with the lock member 4, and the lock member 4 is in the released state. Therefore, when a key (not shown) is inserted into the lock mechanism 3 to perform a locking operation, the lock member 4 rotates from the unlocked position b to the locked position a, and the tip portion 42 of the lock member 4 is rotated.
Is an engaging recess 8 of the cap 8 attached to the furniture body 1.
Engage 1. When the lock member 4 is rotated, the first and second eccentric positions P1 and P2 of the lock member 4 are rotationally displaced. As a result, the upper key bar 5a rises, the upper end 52a thereof projects from the upper end of the door 2, engages with a downward engaging hole (not shown) provided in the furniture body 1, and the lower key bar 5b descends. Then, the lower end 52b thereof projects from the lower end of the door 2 and engages with an upward engaging hole (not shown) provided in the furniture body 1. When applied to a locker or the like having a sub door further above the door 2, the sub door may be locked by the upper end 52a of the raised upper key bar 5a. From this locked state, when a key operation is performed in the opposite direction to the above, the locking member 4 returns to the unlocked position b, and the protruding ends of the upper and lower key bars 5a and 5b are retracted into the door 2 and the door 2 Is ready to be opened. Then, when the door 2 is opened, the rotator 61 is released from the restraint by the cap 8, and the urging force of the spring 62 causes the rotator 61 to move from the retracted position d to the position shown in FIG.
After returning to the locking position c shown in, the inwardly rotating end 61d enters the notch 43 provided on the outer periphery of the base end 41 of the lock member 4. Therefore, even if a key operation is performed to rotate the lock member 4 in this state, the lower end surface of the cutout portion 43 comes into contact with the upper surface of the inward rotation end 61d to lock the rotation. The lock member 4 cannot rotate to the lock position.
Therefore, even if a key operation is performed by mistake with the door 4 opened, the lock member 4 and the key bar 5 do not protrude from the door 2.

In the above embodiment, the case where the lock member 4 is directly connected to the operating end 31 of the lock mechanism 3 has been described, but the present invention is appropriately arranged between the operating end 31 of the lock mechanism 3 and the lock member 4. The same can be applied to a device provided with such an interlocking mechanism. In that case, instead of directly locking the lock member 4 by the malfunction prevention mechanism 6, one of the components of the interlocking mechanism is locked to indirectly stop the movement of the lock member 4. Good.

Besides, the configuration of each part is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

[0024]

Since the present invention is constructed as described above,
It is possible to reliably prevent the lock member and the key rod from accidentally protruding in the state where the door is not completely closed. Therefore, it is possible to prevent the protruding lock member or key bar from colliding with the opening end surface of the furniture body due to a malfunction, and it is possible to effectively prevent the occurrence of impact and the peeling of the coating. Moreover, since the malfunction prevention mechanism operates by utilizing the opening / closing operation of the door, it is possible to simplify the configuration and ensure the operation.

[Brief description of drawings]

FIG. 1 is a front view of a locker to which an embodiment of the present invention is applied.

FIG. 2 is a perspective view of the same embodiment.

FIG. 3 is a front view of the embodiment.

FIG. 4 is an explanatory view of a structure of a rotator of the embodiment.

FIG. 5 is a side view of the cap of the same embodiment.

FIG. 6 is an operation explanatory view illustrating an operation of the door of the embodiment in a fully closed state.

FIG. 7 is an operation explanatory view explaining an operation of the door of the embodiment in the open state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Furniture main body 2 ... Door 3 ... Lock mechanism 4 ... Lock member 5 ... Key rod 6 ... Malfunction prevention mechanism 7 ... Key cover 8 ... Cap 9 ... Latch mechanism 31 ... Operating end 41 ... Base end 51 ... Base end 61 ... Rotator 62 ... Spring 81 ... Engagement concave part 82 ... Abutting surface a ... Lock position b ... Non-lock position c ... Locking position d ... Retracted position P1 ... First eccentric position P2 ... Second eccentric position

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenichi Motoya, 184-1, Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa 1 Nifco Co., Ltd. (72) Michiharu Tasaki, 1301, Okazu-cho, Izumi-ku, Yokohama-shi, Kanagawa 11

Claims (7)

[Claims] 1. A lock mechanism provided on a door, the operating end of which operates in response to a key operation, and a non-engagement position which is biased by the operating end of the lock mechanism to engage a furniture main body. A lock member that operates up to the lock position, and reciprocates in the vertical direction in conjunction with the lock member, projects from the door at the lock position and engages with the furniture body, and sinks into the door at the unlocked position. A key bar that is detached from the furniture body and an erroneous operation that locks the operation of the lock member directly or indirectly in the door opening area that operates by using the opening and closing operation of the door to the furniture body and the door is not completely closed A door lock mechanism for furniture such as a locker, which is provided with a mechanism. 2. A lock mechanism having an actuating end for reciprocating rotation, and a lock member having a sickle shape for pivoting with its base end directly connected to the actuating end. A door lock mechanism for furniture such as a locker according to Item 1. 3. A door lock mechanism for furniture such as a locker according to claim 2, wherein the base end of the key bar is pivotally mounted at the base end eccentric position of the lock member. 4. A cap having an engaging recess is provided on the inner surface of the opening of the furniture main body so that the tip of the lock member engages with the engaging recess. Door lock mechanism for furniture such as lockers. 5. An erroneous operation preventing mechanism is rotatable from a locking position that is pivotally attached to the door side and prevents the locking member from rotating in the locking position direction to a retracted position where the locking member cannot come into contact with the locking member. And a spring for urging the rotator to rotate in the locking position direction, and when the door is fully closed, the rotator contacts the rotator and resists the urging force of the spring. A door lock mechanism for furniture such as a locker according to claim 2, 3 or 4, further comprising a contact surface on a furniture body side for rotating the furniture to a retracted position. 6. A lock mechanism, a lock member, and a key rod are held on a door body, and are removable from the back face of the door body so as to cover the lock mechanism, the lock member, and the base end portion of the key rod. A door lock mechanism for furniture such as a locker according to claim 5, wherein a pivot is pivotally attached to the attached key cover. 7. The door lock mechanism for furniture such as a locker according to claim 6, wherein the key cover is provided with a latch mechanism.