JPH0323499Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention prevents illegal intruders such as pushers from entering by limiting the opening angle of the door (door opening amount) as necessary, and improves the crime prevention effect. Concerning precautionary locks to achieve.

[Conventional technology]

Conventionally, as this type of precautionary lock, those shown in (a) Japanese Utility Model Application Publication No. 176564/1988 filed by the applicant of the present application, and (b) Japanese Unexamined Utility Model Publication No. 123982/1989 are known. .

In the case of (a) above, a locking member is provided in the lock case attached to the door side so that it can move in and out, and one end (fixed end) side is provided with a pivot on the door frame side through a mounting plate so that it can rotate in an arc. 1, which made it possible to open a certain range of doors by wearing
A plate-shaped regulating member is provided, and a long hole-shaped engagement hole is formed at the other end (free end) side of the plate-shaped regulating member to which the locking member is detachably engaged. This is what happens.

In the case of (b), the case body is exposed and attached to the indoor side of the door, and latches with engaging parts are provided at the top and bottom of the case body via sliding plates, while the door frame is attached to the case body. is attached with a regulating member consisting of two arms exposed, and one end of the regulating member is pivotally connected, and the ends of both arms are connected to each other so that it can be folded freely, and the regulating member other than the regulating member is attached. An engaging pin that removably engages with the engaging portion of the latch is attached to the end side.

[Problem to be solved by the invention] However, according to the conventional example (a) above, the locking member is attached to the large diameter portion of the elongated engagement hole formed at the bottom of one plate-like regulating member. When the locking member moves horizontally when the door is opened, one of the regulating members tilts and the tip of the locking member reaches the bottom edge of the elongated engagement hole. The structure is such that the door opens at a certain angle (door opening amount) by moving. Therefore, the opening angle of the door, that is, the opening amount, is determined by the length from the pivot point (rotation fulcrum) of the shaft attached to one end of the regulating member to the lowermost edge of the elongated engagement hole. The longer the length of the regulating member, the more the door can be opened, but conversely, if the regulating member is too long, it becomes unsightly and its strength decreases, resulting in new problems such as being impractical.

The engaging hole of the regulating member in (a) above for increasing the door opening amount is formed in an inverted L shape, and the width of the regulating member is lengthened, which not only looks unsightly, but also
The drawback was that it was difficult to store it compactly on the door frame side.

According to the conventional example (b), the case body, latch, etc. are exposed and attached to the side of the door on the indoor side, which not only looks unsightly, but also poses a risk of catching human bodies, clothes, etc. .

The case body, latch, etc. are attached to the indoor side of the door, and one end of the regulating member consisting of two arms is pivoted to the front side of the window frame.
Although it can be applied to doors that open outward, it has a drawback that it cannot be applied to doors that open inward. This is because when applied to an inward-opening door, the latch or arm (regulating member)
etc. are exposed to the outside of the room, so it cannot be put into practice, and the engaging pin of the arm cannot be engaged with the engaging part of the latch.

This invention attempts to solve all of the problems mentioned above.

[Means to solve the problem]

In order to solve the above problems, this invention provides a locking member that can be freely retracted and retracted into the lock case attached to the door, while one end of the regulating member consisting of two or more arms is pivotally mounted on the door frame side. However, the ends of these arms are connected to each other so that they can be folded freely.
The lock is a precautionary lock in which an engagement hole is formed on the other end of the regulating member to which the locking member is removably engaged, and the lock case faces from the front to the rear on the front side of the door. At the same time, a mounting plate storage recess is formed on the front side of the door frame, a mounting plate with a storage recess formed in the mounting plate storage recess is buried, and when the regulating member is folded and stored in the storage recess of the mounting plate, , the front end surface of the mounting plate and the front end surface of the regulating member are formed to be approximately flush with the front end surface of the door frame, and furthermore, the width of the storage recess is narrower than the width of the front side of the door frame, and the storage All the arms of the regulating member are folded and stored within the recess.

The regulating member may be configured to be stored and held in the storage recess of the door frame by a spring when the door is closed.

The regulating member may be attached to the door frame via a mounting plate, and a fitting hole into which a locking member is fitted may be formed in the mounting plate to provide a main locking function in addition to the precautionary function.

[Operation] When the door is completely closed, when the locking member is engaged with the engagement hole of the regulating member consisting of two or more arms and the door is opened, the regulating member tilts and tilts. , through the connections between the ends of each arm, each arm is aligned to open the door to its maximum extent and to its maximum extent.

That is, the door is as shown in Fig. 2A and B.
From the connecting pin 14 of the second arm 12 to the locking member 4
The length to the engagement hole 15 when is at the lowest end is L, the length from the pivot 13 of the first arm 11 to the connecting pin 14 is M, and the first arm 11 and the second arm 12 are on the chain line. If the maximum opening amount of the door when the door is in a straight line as shown is _L2 , then the general formula _L2≈L +M holds true.

Therefore, compared to the opening amount of a regulating member consisting of one arm as in the conventional example (A), the opening amount of the door is increased by the total sum of the increased arm lengths in the present invention. become.

In addition, the lower end of the regulating member 10 of the present invention does not protrude from the outer end of the door regardless of whether the door is opened inward or outward, and the lower end of the regulating member 10 of the present invention does not protrude from the outer end of the door. ) 30, so the door can be left half-open without any problem.

When the half-opened door is closed, each arm serving as a regulating member is folded via its connecting pin and maintained in the closed state as shown by the solid line in FIG. 2A. In this case, the front end surface of the mounting plate and the front end surface of the regulating member are substantially flush with the front end surface of the door frame, and all the arms of the regulating member are folded and stored within the storage recess of the mounting plate. It can be stored compactly and has a good appearance.

In this closed state, the door can be freely opened and closed regardless of the precaution function unless the locking member is engaged with the engagement hole of the regulating member.

Further, when the door is closed, the regulating member consisting of two or more arms can be automatically returned to the stored state by the elastic force of the spring.

〔Example〕

An embodiment of this invention will be described below with reference to FIGS. 1 to 5.

Reference numeral 1 denotes a lock case embedded from the front to the rear of the front side of the door A, and within this lock case 1 is a locking member 4 that can be freely retracted from the entrance 3 of the front 2.
, a tail piece 5 connected to the shaft portion 4a of the locking member 4, an operating hub 6 protruding from an engaging portion 6a that engages and disengages from an engaging hole 5a formed at the rear of the tail piece 5, and the hub 6. a click motion spring 7 that constantly presses the engaging portion 6a of the hub 6 and biases the hub 6 in a direction that stabilizes the protruding and retracting positions of the tail piece 5;
It is equipped with. A thumb turn provided on the indoor side or an operation shaft (not shown) of a cylinder provided on the outdoor side is inserted and connected to the square hole 6b of the hub 6, and by operation of either the thumb turn or the cylinder. The locking member 4 is made to move in and out.

Reference numeral 8 denotes a mounting plate embedded in a mounting plate storage recess C formed on the front side of the door frame B facing the locking member 4. A storage recess 8a is formed on the surface side of the mounting plate 8 for storing a regulating member 10 (to be described later) when the door is closed, and a fitting hole 8b is formed near both upper and lower ends, and a locking member 4 is formed when the door is closed. The main locking is performed when the holder is fully protruded and fitted into the fitting hole 8b. In addition, since the fitting holes 8b are formed in both the upper and lower parts, there is no need to consider the vertical direction when attaching to the door frame, which is convenient. Reference numeral 9 denotes a seat plate, and its upper and lower parts are fixed to the mounting plate 8 with screws 20.

Reference numeral 10 denotes a regulating member consisting of a first arm 11 and a second arm 12. One end of the first arm 11 of the regulating member 10 is connected to a pivot 13 in the center of the mounting plate 8.
The other end of the first arm 11 is rotatably connected to one end of the second arm 12 by a connecting pin 14, and the first arm 11 and the second arm
The arm 12 is extendable or foldable. An engagement hole 15 slightly larger than the size of the locking member 4 is formed at the other end of the second arm 12 at a position facing the fitting hole 8b of the mounting plate 8 and the locking member 4 when the door is closed. The locking member 4 is fully locked by fitting into the fitting hole 8b through the fitting hole 15, and the door is closed with the locking member 4 removed from the fitting hole 8b and fitted into the fitting hole 15. By opening, the opening angle of the door is regulated within a certain range, and when the door is closed, the locking member 4 is disengaged from the engagement hole 15, so that the door can be opened freely.

When the regulating member 10 is folded and stored in the storage recess 8a of the mounting plate 8, the front end surface 8c of the mounting plate 8 and the front end surface 10c of the regulating member 10 are formed to be approximately flush with the front end surface D of the door frame B. There is.

Moreover, as shown in FIG. 2A, the storage recess 8a
The width α is made narrower than the width β of the front side of the door frame RO, and all the arms 11, 12, . . . of the regulating member 10 are folded and stored within this storage recess 8a.

Reference numeral 16 denotes a spring that normally returns the regulating member 10, that is, the first and second arms 11 and 12 to the closed position via the pivot shaft 13. 18,
It is attached with screws 19 or the like. According to such a configuration, there is an advantage that the first and second arms 11 and 12 are automatically returned to the original closed position when closing the door that has been opened at a certain angle.

21 is a screw for attaching the lock case 1 to the front of the door A.

Next, the operation of this embodiment will be explained below.

(Final locking) With the door A completely closed, rotate the thumb turn or cylinder in the locking direction to lock the locking member 4.
When the locking member 4 is protruded to the maximum extent (position a in FIG. 1), the locking member 4 is engaged with the fitting hole 8b of the mounting plate 8 through the engagement hole 15 of the second arm 12, and the door cannot be opened. It becomes a so-called locked state.

(Cautionary Lock) When the locking member 4 is returned one step in the unlocking direction to the position b in FIG. The door can be opened because it is detached. However, in this case, the locking member 4 remains fitted into the engagement hole 15 of the second arm 12, so when the door is opened, the shaft portion 4a of the locking member 4 pushes the edge of the engagement hole 15. The second arm 12 and the first arm 11 are
Use 3 as a fulcrum and rotate while tilting. At this time,
When the arms 11 and 12 are in a straight line as shown by the chain line in Figure 2A (X in Figure 2A), the maximum opening angle (opening amount) of the door is reached, and the door cannot be opened any further. state (cautious state). In this case, the locking member 4 only moves horizontally together with the door 1 and always maintains a vertical posture, and the direction of the engagement hole 15 gradually inclines as the second arm 12 inclines. 4 is not removed from the engaging hole 15, and therefore the door cannot be unlocked from the inside or outside (see Fig. 2A).

When the door is closed from the half-open state, the state shown in the solid line in FIG. 2A is restored by the reverse operation to that described above (however, the locking member 4 returns to position b in FIG. 1).

If you want to put the locking member 4 in the fully locked state from this closed state, you can do so by turning the thumb or rotating the cylinder in the locking direction.
Further, when it is desired to unlock the door and open the entire door, it is preferable to rotate the thumb turn or cylinder in the unlocking direction and retract the locking member 4 to the solid line position in FIG. 1.

In this embodiment, the locking member 4 is moved in and out by a thumb turn or rotation by key operation on the cylinder, but the structure is not limited to that shown in FIG. 1. For example, a case that slidably houses a shaft connected to a locking member is attached to the door surface on the indoor side, a knob integrated with the shaft is exposed outside the case, and the knob is slidably operated. The locking member may be moved in and out depending on the locking member, or any other structure may be adopted.

Further, in the embodiment, a fitting hole 8b is formed in the mounting plate 8, and the locking member 4 is fitted into the fitting hole 8b so that the final locking can be performed, but there may be a case where such a structure is not adopted. Can be implemented.

Further, in this embodiment, the arm serving as the regulating member 10 is composed of two arms 11, the first and second arms.
There may be three or more.

Furthermore, although the engaging hole 15 of the second arm 12 and the corresponding locking member 4 are provided at the lower position in the embodiment, they may be provided at the upper position.

[Effect of idea]

According to this invention, (1) a lock case in which a locking member is removably installed;
The lock is buried from the front to the rear of the front side of the door, and a mounting plate storage recess is formed on the front side of the door frame. Since both the case and the mounting plate are engraved, the present invention can be actually used as a security lock not only for outward-opening doors but also for inward-opening doors.

On the other hand, as in the conventional example (b), one end of the regulating member consisting of two arms is provided on the front side of the door frame, and the case body and the latch are mounted on the indoor side of the door. Lock-type ones can be applied to outward-opening doors, but have the disadvantage that they cannot be applied to inward-opening doors.

(2) When the regulating member is folded and stored in the storage recess of the mounting plate, the front end face of the mounting plate and the front end face of the regulating member are formed to be approximately flush with the front end face of the door frame, and the storage recess is The width is narrower than the width of the front of the door frame, and all arms of the regulating member are folded and stored within this storage recess, so compared to conventional examples (a) and (b), the door width is narrower than the front width of the door frame. Not only can it be stored compactly on the frame side, but it also does not look unsightly.

(3) The engagement hole of the regulating member of the present invention is similar to that of the conventional example (A).
Instead of a long hole like this, a hole with a small diameter that allows the locking member to be inserted and removed at the other end is sufficient, so there is no problem that the strength of the regulating member is weakened.

In addition, the conventional example (b) requires a large number of components such as a case body, a latch, a sliding plate, and a spring, but the present invention does not require such components and has a simple structure. .

[Brief explanation of the drawing]

Each figure shows an embodiment of this invention. Figure 1 is a longitudinal cross-sectional view when the door is closed, Figure 2A is a front view of the vicinity of the regulating member when the door is closed, Figure 2B is a horizontal cross-section of Figure 2A, and Figure 3 is a cross-sectional view of Figure 2A. 4 is a right side view of FIG. 1, and FIG. 5 is an exploded perspective view of the vicinity of the spring. A...Door, B...Door frame, C...Mounting plate storage recess, D...Front end surface of door frame, 4...Locking member, 8...
...Mounting plate, 8a...Storage recess, 8b...Fitting hole,
10...Regulation member, 10c...Front end surface of regulation member, 11...First arm, 12...Second arm,
13... Pivot, 14... Connection pin, 15... Engagement hole.

Claims (1)

[Scope of claim for utility model registration] A locking member 4 inside the lock case 1 attached to the door side.
is provided so that it can freely appear and retract, while one end side of a regulating member 10 consisting of two or more arms 11, 12... is pivotally attached to the door frame bottom side, and these arms 11, 12...
The ends of the locking member 10 are connected to each other so that they can be folded freely, and the locking member 4 is provided with an engaging hole 15 in which the locking member 4 is removably engaged. The lock case 1 is buried from the front to the rear of the front side of the door A, and a mounting plate storage recess C is formed on the front side of the door frame B, and a storage recess is formed in the mounting plate storage recess C. When the mounting plate 8 formed with the shape 8a is buried and the regulating member 10 is folded and stored in the storage recess 8a of the mounting plate 8, the front end surface 8c of the mounting plate 8 and the front end surface 10c of the regulating member 10 are aligned with the front end surface of the door frame RO. Furthermore, the width α of the storage recess 8a is narrower than the width β of the front side of the door frame B, and all the arms 11 of the regulating member 10 are formed within this storage recess 8a.
12. A precautionary lock characterized by being configured to fold and store.