JPH08326390A - Lock device - Google Patents

Abstract

PURPOSE: To provide a lock capable of locking a door not to be undesirably opened by the use of a slide type latch member 8 having satisfactory operability when the door is once closed by wind or the like. CONSTITUTION: In a lock device 1 used for a simplified toilet or the like provided outdoor and provided in a door swingingly opened and closed, a latch member 8 to lock the door by the displacement of a slide having satisfactory operability is provided in the door side. This latch member 8 is urged by a coiled springs 10, 11 in the projection direction 7a, while a fitting part 8d fitted in the locking member 5 is formed with a guide slant face 81.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device suitably used for a door whose one end is swingably supported by a frame body, and in particular, it is installed outdoors such as a portable toilet which can be moved and installed. The present invention relates to a locking device preferably used for a door of a structure.

[0002]

2. Description of the Related Art A sliding type locking device having a simple structure has been conventionally used for a door, such as a door of a toilet, which has one end pivotably supported by a frame. This slide-type locking device is provided on a door, and is provided with a latch that is displaceable in a direction vertical to the swinging direction of the door on a horizontal plane, a handle for displacing the latch, and a handle provided on the frame side. And a fastener into which is inserted. When locking the door, the user manually operates the handle to cause one end of the latch to project from the other end of the door and to be fitted into the fastener.

In the slide type lock device having such a structure, the lock can be confirmed more easily than the cylinder lock (rotary type lock device) in which the clasp is displaced by rotating a knob or the like. Also, it is excellent in operability.

[0004]

However, in the slide type lock device as described above, the door is swingable when the toilet is unused when no one is inside the door. Therefore, when the slide lock device is used as a door for a structure installed outdoors such as a simple toilet that can be moved and installed, the door is easily swung by wind or the like. Therefore, in order to prevent such swinging of the door, it is necessary to further provide a component different from the slide lock device such as a door check or a spring-loaded hinge, which complicates the structure and mounting work. There is.

On the other hand, when the door can be locked by making the latch displaceable from the outside of the door, even if there is no one on the inside of the door as described above. It is possible to prevent the door from swinging. However,
If the latch can be displaced from the outside of the door in this manner, the latch must be displaced even when the door is closed from the outside, and the operation is complicated.

An object of the present invention is to provide a lock device which has good operability and which can hold a door in a closed state without using a separate part.

[0007]

According to a first aspect of the present invention, there is provided a lock device for a door, one end of which is pivotally supported by a frame body. The lock device is attached to the door, and the inside of the case. Is provided slidably in a direction intersecting with the swinging direction of the door,
A latch member, one end of which can project or retract from the other end of the door, and a guide slope is formed at the one end, and the latch member fixed to the latch member, the latch member being fixed from the inner side and the outer side of the door. A handle that can be slid and displaced,
A spring member that elastically biases the latch member in a direction in which one end of the latch member projects from the other end of the door, and a holding member that holds the latch member in the projecting position. An operation piece that is angularly displaceable on the housing facing the other end and is operated to perform angular displacement from the inner side of the door, and an operation piece that interlocks with the operation piece and contacts the other end of the latch member at the protruding position. The door is angularly displaced between a locking position in contact therewith and an unlocking position at which the latch member can be slidably displaced by retreating from the displacement area of the latch member, and an angular displacement operation is performed from the outside of the door by a predetermined tool. Such a holding member comprising a locking piece capable of and a reversing spring elastically biased to hold the locking piece in the locked position or the unlocked position when the locking piece is in the locked position or the unlocked position. A frame provided to face the latch member, A latching member having a recess into which one end of the latch member is fitted, the latching member is retracted when the guide slope is brought into sliding contact with the peripheral edge of the recess of the locking member when the door is closed. When the door is completely closed, it projects so that the one end is fitted into the recess and locked.

Further, in the lock device according to the invention of claim 2, the locking member forms the recess, and a gate-shaped receiving member having external threads formed on legs and an inner side of the frame body. Side and outer side, respectively, a pair of mounting plates formed with insertion holes through which the legs of the receiving member are inserted, and insertion holes formed in the mounting plate and free holes formed in the frame body. And a mounting bolt and a nut for connecting the mounting plate with the frame body, and for holding and fixing the leg portion of the receiving member to the mounting plate at an arbitrary position of an external screw formed on the leg portion. And a pair of nuts.

[0009]

According to the first aspect of the present invention, in a lock device used in a toilet door or the like, one end of which is swingably supported by a frame body, the latch member for locking the door to the frame body. Is provided on the door slidably in a direction intersecting with the swinging direction of the door, and the latch member is elastically biased in the projecting direction by a spring member and held at the projecting position. A holding member is provided so that it can be locked.

That is, the latch member is slidable in a housing attached to the door in a direction intersecting with the swinging direction of the door, and one end of the latch member can project or retract from the other end of the door. To set up. The latch member is slidably displaceable from the inner side of the door and the outer side of the door by a handle fixed to the latch member, and one end of the latch member is elastically ejected in a direction projecting from the other end of the door. Have been urged. A locking member is provided on the frame body so as to face the latch member, and when the door is closed,
One end of the latch member is fitted in the recess of the locking member, and the door is locked so as not to swing and move.

Therefore, the user can open the door from either the inner side or the outer side of the door by a simple operation of slidingly displacing the latch member in the backward direction.

Further, when the operation force in the backward direction by the user is released, one end of the latch member projects from the other end of the door by the elastic force of the spring member, so that the user can open the door. By releasing the operation force in the backward direction in the closed state, one end of the latch member is fitted into the recess of the locking member, and the door is held in the closed state. Even if the user forgets to close the door, when the door is swung by wind or the like and is displaced in the closing direction, the guide slope formed at one end of the latch member causes the locking member to move. When the latch member retreats and the door is completely closed by sliding on the peripheral edge of the recess, the spring force of the spring member causes one end of the latch member to move into the recess of the locking member. The door is retained by being fitted.

Therefore, even if the user forgets to close the door or does not completely close the door, once the door is closed by wind or the like, one end of the latch member fits into the recess of the locking member, and the door is closed. It is possible to prevent a problem that the door is held in the closed state and the door remains open. Therefore, it is not necessary to provide separate parts such as the door check and the spring-loaded hinge for holding the door in the closed state, and the construction and the mounting work can be simplified.

Furthermore, when the door is closed as described above, the latch member projects into the locking member,
In this state, the user operates the holding member to
The latch member can be held in the protruding position, that is, the door can be locked. Therefore, a structure for locking can be provided integrally with the latch member that is slidably displaced, and the structure can be simplified.

Further, the holding member is provided with an operation piece provided on the housing so as to be angularly displaced so as to face the other end of the latch member, and a member provided with the operation piece, for example, coaxially provided to perform angular displacement. It comprises a stop piece and a reversing spring for holding the state of the locking piece. The operation piece can be angularly displaced from the inner side of the door, and when the user performs the angular displacement operation, the locking piece realized by, for example, a rotating member having a different diameter is used as a latch member at the protruding position. It is angularly displaced between a locked position in which it abuts against the other end and an unlocked position in which the latch member is slidably displaced by retracting from the displacement region of the latch member. The locking piece is elastically biased by a reversing spring so as to maintain the locked state or the unlocked position when the locking piece is in the locked position or the unlocked position.

Therefore, even if the user stops the operation in the middle of the angular displacement operation, the locking piece in the transition state is displaced to the locking position or the unlocking position by the elastic force of the reversing spring. Stable operation can be realized with such a structure.

Furthermore, the locking piece can be angularly displaced from the outside of the door by a predetermined tool such as a flat-blade screwdriver.

Therefore, even if an emergency occurs such that a child accidentally operates the locking piece to be trapped inside the door, by using the predetermined tool, the door can be opened. The lock can be unlocked from the outside, and the safety can be improved.

According to a second aspect of the present invention, the locking member includes a gate-shaped receiving member, a pair of mounting plates, a mounting bolt and a nut for fixing the mounting plate to the frame, and a pair of mounting plates. And a nut. In the receiving member, an external thread is formed on the gate-shaped leg portion, and a connecting portion connecting the both leg portions is slidably in contact with the guide slope of the latch member.
The receiving member is attached to the mounting plate such that the mounting plate is sandwiched by a pair of nuts screwed to external threads formed on the legs of the receiving member. The mounting plate is fixed to the frame by mounting bolts and nuts that pass through the mounting plate. At this time, the insertion hole for the mounting bolt formed in the frame is a through hole,
Therefore, it is possible to displace the mounting plate within the range of the diameter of the play hole and mount it at an arbitrary position.

Therefore, the receiving member can be attached to the latch member at an optimum position with high accuracy with respect to a slight manufacturing deviation between the door and the frame or a deviation caused by a temperature change.

[0021]

EXAMPLE An example of the present invention will be described below with reference to FIGS.

FIG. 1 is an exploded perspective view of a lock device 1 according to an embodiment of the present invention, and FIG. 2 is a horizontal sectional view for explaining the operation of the lock device 1. The lock device 1 is used as a lock device for a portable, simple toilet installed outdoors. The lock device 1 includes a lock mechanism 3 attached to an inner side of a door 2.
And a locking member 5 attached to the frame body 4. The door 2 is swingably attached to the frame body 4 by a hinge or the like on one end side of the door 2 not shown.

FIG. 3 is a rear view of the lock mechanism 3. FIG.
With reference to FIG. 3, the locking mechanism 3 has a latch member 8 that can be slidably displaced in a displacement direction 7 that is substantially perpendicular to the swinging direction 6 of the door 2 on a horizontal plane, and the latch member 8. A housing 9 for accommodating the member 8, coil springs 10 and 11 for elastically biasing the latch member 8 in the protruding direction 7a, handles 12 and 13 operated by a user, and the latch member 8
Holding member 14 for holding in a state of protruding in the protruding direction 7a
A display member 15 for displaying whether or not the lock device 1 is in a locked state, and a lid member 16.

The latch member 8 has a main body 8a which can be slidably displaced in the housing 9 in the displacement direction 7, and the main body 8a.
Spring receiving seats 8b and 8c formed on the back surface side of a and abutting on one ends of the coil springs 10 and 11, respectively, and a fitting portion 8 extending from the main body 8a in the projecting direction 7a.
d, a pair of spacers 8e and 8f formed on the front side of the main body 8a, and an abutting portion 8k that faces the holding member 14.

A handle 12 is fixed to the front side of the main body 8a so that the latch member 8 can be displaced from the outside of the door 2. Further, the main body 8a is formed with an insertion hole 8g into which the shaft portion 13a of the handle 13 in which the elongated hole 9b formed in the bottom plate 9a of the housing 9 is loosely inserted can be inserted, and the tip end of the shaft portion 13a. After the portion 13b communicates the insertion hole 8g and the washer 17, the split pin 18 is fitted into the pin hole 13c formed in the tip portion 13b to prevent the handle 13 from coming off, whereby the handle 13 is attached to the main body 8a. A rectangular portion 13e is formed at the base end portion 13d of the shaft portion 13a, and by fitting the rectangular portion 13e into the elongated hole 9b, the handle 13 does not undergo angular displacement and the handle 13 moves in the displacement direction 7. Sliding displacement is possible.

The housing 9 has a recess 9c for accommodating the latch member 8, the coil springs 10 and 11, the holding member 14 and the like, and one side plate 9d forming the recess 9c.
A fitting portion 8d of the latch member 8 is fitted in and is formed with a protruding hole 9e extending in the displacement direction 7. Also,
On the other side plate 9f of the housing 9, guide pieces 9g and 9h are provided upright so as to slidably support the back side of the main body 8a.

Further, in the housing 9, the bottom plate 9a is
Spring receiving seats 9i and 9j are erected on which the other ends of the coil springs 10 and 11 respectively abut. Since the coil springs 10 and 11 are compression springs, the latch member 8 is elastically biased in the projecting direction 7a, and when the handles 12 and 13 are not operated, the fitting portion 8d has a projecting hole. It projects from 9e.

The holding member 14 comprises an operating piece 21, a locking piece 22, and a reversing spring 23. The shaft portion 21a of the operation piece 21 communicates with the insertion hole 9k formed in the bottom plate 9a of the housing 9 and the insertion hole 22a formed in the locking piece 22, and then the pin hole 2 formed on the tip side thereof.
By fitting the split pin 24 into the 1b, the split pin 24 is prevented from coming off and is attached to the housing 9 so as to be freely angularly displaced. Shaft 21
An oval fitting protrusion 21e is formed at the base end of a, and an oval recess 22f is formed on the operation piece 21 side of the insertion hole 22a of the locking piece 22 correspondingly. It Therefore, the operating piece 21 and the locking piece 22 can be angularly displaced integrally with each other.

The locking piece 22 has a cylindrical portion 22b forming the insertion hole 22a, a large diameter portion 22c extending from one side surface of the cylindrical portion 22b, and the cylindrical portion 22b to the large diameter portion 22c.
And an extended portion 22d extending to the side opposite to
And a locking pin 22e standing upright. The locking pin 22e has one end 23a of the reversing spring 23.
The other end 23b of the reversing spring 23 is wound around a locking pin 9l erected on the bottom plate 9a of the housing 9.

A notch 21c is formed at the outer peripheral edge of the tip end of the shaft portion 21a of the operation piece 21, and a fitting hole 15a formed in the display member 15 is fitted into the notch 21c. Thus, the locking piece 22 and the display member 15 are angularly displaced as the operation piece 21 is angularly displaced. The display member 15 is formed in an arc shape, the fitting hole 15a is formed at the center position, and two indicators 15b, 1 are spaced apart from each other in the circumferential direction.
5c is formed. The index 15b indicates that the locking device 1 is in the unlocked state, for example, blue, and the index 15b
"c" indicates that the lock device 1 is in a locked state, for example, red.

The lid member 16 has an operation port 16a through which the handle 12 can project, and the index 15b.
Or a display window 16b for selectively exposing 15c
And the operation hole 16 exposed by the tip of the shaft portion 21a of the operation piece 21.
c and are formed. The lid member 16 has a screw 25 that is inserted through the lid member 16 after the members 8, 14, 15 and the coil springs 10, 11 are housed in the housing 9.
The a, 25b, and 25c are screwed and fixed to the bosses 9p, 9q, and 9r provided upright on the bottom plate 9a of the housing 9, respectively. The lock mechanism 3 thus completed
Is a door 2 having screws (not shown) inserted through flanges 9m and 9n extending from the side plates 9d and 9f of the housing 9, respectively.
It is attached to the door 2 by being screwed on.

Even when the lid member 16 is assembled in this way, the front surface of the main body 8a of the latch member 8 and the lid member 1 are
Between the rear surface of 6 and the mounting portion 12a of the handle 12 mounted on the main body 8a and the spacers 8e, 8f.
Therefore, the display member 15 can be smoothly angularly displaced in association with the angular displacement operation of the operation piece 21.

FIG. 4 is a vertical sectional view of the locking member 5. The locking member 5 generally includes a receiving member 31 and a pair of mounting plates 3.
2, 33, bolts 34, 35, and the bolts 34, 35
And nuts 38, 39; 40, 41 for fixing the receiving member 31.

The receiving member 31 is formed in a gate shape,
An outer screw 31c, on the free end side of the pair of legs 31a, 31b,
31d is engraved. The proximal ends of the leg portions 31a and 31b are connected to each other by a connecting portion 31e, and form a recess into which the fitting portion 8d is fitted. The mounting plates 32 and 33 are arranged on the front side and the rear side of the frame body 4, respectively, and the bolts 34 and 35, the washers 42 and 43,
Spring washers 44, 45 and the nut 36,
It is fixed to the frame body 4 by 37. The receiving member 31 is fixed to the attachment plates 32 and 33 attached to the frame body 4 by using the nuts 38 and 39, washers 46 and 47, spring washers 48 and 49, and the nuts 40 and 41.

A holding plate 50 is interposed between the mounting plate 33 and the back surface of the frame body 4. The holding plate 50 and the frame body 4 are formed with through holes 51 and 52 larger than the outer diameters of the leg portions 31a and 31b and the bolts 34 and 35, respectively.
Therefore, the receiving member 31 can be attached at an optimum position corresponding to the lock mechanism 3 regardless of a slight deviation in manufacturing of the door 2 and the frame body 4 or a temperature change. Also, the leg 3
By changing the tightening position of the nuts 38, 39; 40, 41 on the outer screws 31c, 31d of the la, 31b, the projecting height of the connecting part 31e from the mounting plate 32 can be adjusted, and the latch can be adjusted. The fitting portion 8d of the member 8 can be fitted smoothly.

Referring to FIG. 2, as shown in FIG. 2 (a), when the door 2 is closed, the back surface 8j of the fitting portion 8d is locked by the connecting portion 31e of the receiving member 31. Therefore, unless the handles 12 and 13 are operated, the door 2 is locked without being opened undesirably. When the handles 12 and 13 are displaced in the retreating direction 7b, the fitting portion 8d of the latch member 8 retracts into the housing 9, thereby releasing the locked state of the fitting portion 8d by the receiving member 31. As shown in (b), the door 2 can be opened in the arrow 6b direction.

When the door 2 is closed by an operation of the user or an external force such as wind, the guide slope 8i of the fitting portion 8d slides on the connecting portion 31e of the receiving member 31 as shown in FIG. The latch member 8 retracts into the housing 9 against the elastic force of the coil springs 10 and 11, and when the door 2 is completely closed as shown in FIG. The latch member 8 is displaced in the protruding direction 7a by the elastic force of 11, and the back surface 8 of the fitting portion 8d is moved.
The door 2 is held in the closed state by j being locked to the connecting portion 31e.

Therefore, in the present invention, as described above, the sliding operation of the latch member 8 by the handle 12 or 13 is sufficient, and the door 2 can be operated from either the inner side or the outer side with good operability. Can be opened or locked. Further, even if the user forgets to close the door, once the door 2 is closed by an external force such as wind, the door 2 can be held in a locked state.

FIG. 5 is a simplified front view for explaining the operation of the holding member 14. In the unlocked state of the locking mechanism 3, as shown in FIG.
c is in contact with a contact piece 9s formed on the bottom plate 9a of the housing 9, and is stably held by the elastic force of the reversing spring 23 in this state. Therefore, the tubular portion 22b of the locking piece 22 faces the latch member 8, and the latch member 8 can be slidably displaced in the displacement direction 7. Further, in this state, the index 15b of the display member 15 faces the display window 16b, and the outside of the door 2 indicates that it is unlocked.

On the other hand, when the operating piece 21 is angularly displaced and the locking mechanism 3 is in the locked state, the large diameter portion 22c of the locking piece 22 contacts the latch member 8 as shown in FIG. 5 (c). It comes into contact with the contact portion 8k, and is stably held by the reversing spring 23 in this state. In this state, the large diameter portion 22c prevents the displacement of the latch member 8 in the backward direction 7b. Further, in this state, the index 15c of the display member 15 faces the display window 16b to indicate that the lock mechanism 3 is in the locked state.

Furthermore, as shown in FIG.
In the transition state between the unlocked state shown in (a) and the locked state shown in FIG. 5 (c), the locking piece 22 is in an unstable state due to the elastic force of the reversing spring 23, and An attempt is made to displace the locking piece 22 so that it is either locked or locked.

Therefore, the locking piece 22 does not remain in the above-mentioned transition state, which enables smooth sliding displacement of the latch member 8.

The operation piece 21 has an operation groove 21d.
By inserting a flat-blade screwdriver through the operation hole 16c of the lid member 16, the angular displacement can be operated from the outside of the door 2. Therefore, even in an emergency situation in which a child accidentally operates the operation piece 21 and is trapped inside the door 2, the outside of the door 2 can be removed by using the minus driver, which is a predetermined tool. The unlocking operation can be performed from one side, and the safety can be improved.

[0044]

As described above, the lock device according to the first aspect of the present invention is provided with a latch member that allows the door to be held or opened in the closed state by projecting or retracting from the door, and with the locking member side. The guide slope is formed so as to face, and the elastic force is generated in the protruding direction by the spring member. Further, in relation to the latch member, a holding member for holding the latch member at the protruding position is provided.

Therefore, in the slide type lock device having a good operability that can hold or open the door in the closed state only by slidingly displacing the latch member, even if the user forgets to close the door, When the door is closed, the latch member is locked by the locking member, and the door can be held in the closed state. As a result, there is no need to provide a separate component to hold the door in the closed state, and the construction and mounting work can be simplified. Further, since the structure for locking is integrally provided on the latch member, the structure can be simplified.

Further, a holding member for holding and locking the latch member at the protruding position is provided with an operating piece for angular displacement operation, a locking piece interlocking with the operating piece, and a state of the locking piece. And a reversing spring.

Therefore, even if the user stops the operation during the angular displacement operation, the locking piece in the transition state is displaced to the locked position or the unlocked position by the elastic force of the reversing spring. Therefore, stable operation can be realized with a simple structure.

Further, the locking piece can be angularly displaced from the outside of the door by a predetermined tool such as a flat-blade screwdriver.

Therefore, even if an emergency occurs in which a child is trapped due to an erroneous operation, it is possible to unlock from the outside of the door by using a predetermined tool, which is safe. Can be improved.

In the locking device according to the second aspect of the present invention, as described above, the locking member for locking the latch member is a gate-shaped receiving member and a pair of mounting members to which the receiving member is attached. A plate, and the height of the connecting portion of the receiving member for locking the latch member can be adjusted by the screwing position of the nut screwed to the leg portion of the receiving member, In addition, the insertion hole of the frame for the mounting bolt for mounting the mounting plate is used as a free hole.

Therefore, the receiving member can be attached to the latch member at an optimum position with high accuracy against a slight manufacturing deviation between the door and the frame or a deviation caused by a temperature change.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a lock device according to an embodiment of the present invention.

FIG. 2 is a horizontal cross-sectional view for explaining the operation of the lock device.

FIG. 3 is a rear view of a lock mechanism attached to the door side in the lock device.

FIG. 4 is a vertical sectional view of a locking member attached to the frame side of the locking device.

FIG. 5 is a simplified front view for explaining the operation of the holding member that performs the locking operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Locking device 2 Door 3 Locking mechanism 4 Frame 5 Locking member 6 Swinging direction 7 Displacement direction 7a Projecting direction 7b Retracting direction 8 Latch member 8d Fitting part 8i Guide slope 9 Housing 10 Coil spring 11 Coil spring 12 Handle 13 Handle 14 Holding member 15 Display member 16 Lid member 21 Operation piece 22 Locking piece 23 Reversing spring 31 Receiving member 31a Leg part 31b Leg part 31e Connecting part 32 Mounting plate 33 Mounting plate 50 Holding plate 51 Free passage hole 52 Free hole

Claims (2)

[Claims] 1. A door locking device, one end of which is pivotally supported by a frame so as to be swingable, and a casing attached to the door and slidable in the casing in a direction intersecting with a swinging direction of the door. A latch member having one end protruding or retreating from the other end of the door and having a guide slope formed at the one end; and a latch member fixed to the latch member from inside and outside of the door. A handle capable of slidingly displacing the latch member, a spring member that elastically urges the latch member in a direction in which one end of the latch member projects from the other end of the door, and the latch member projects A holding member for holding in a position, facing the other end of the latch member, angularly movably provided on the housing, and angularly operated from the inside of the door; And contact the other end of the latch member at the protruding position. Angular displacement between the locking position of the door and the unlocking position where the latch member can be slidably displaced by retreating from the displacement area of the latch member, and the angular displacement operation is performed from the outside of the door by a predetermined tool. Such a holding member comprising a locking piece capable of and a reversing spring elastically biased to hold the locking piece in the locked position or the unlocked position when the locking piece is in the locked position or the unlocked position. A latching member provided in the frame so as to face the latch member and having a recess into which one end of the latch member fits; the latch member has a guide slope when the door is closed. It retreats by sliding on the peripheral edge of the recess of the stop member,
A locking device characterized in that when the door is completely closed, it projects and the one end is fitted into and locked in the recess. 2. The locking member, which is provided on the inner side and the outer side of the frame body, and the gate-shaped receiving member that forms the recess and has external threads formed on the legs, respectively. The frame body is attached to the mounting plate by connecting the pair of mounting plates having the insertion holes through which the leg portions of the receiving member are formed, the insertion holes formed in the mounting plate and the free holes formed in the frame body. A mounting bolt and a nut to be held, and a pair of nuts for holding and fixing the leg portion of the receiving member to the attachment plate at an arbitrary position of an external screw formed on the leg portion. The locking device according to claim 1.