JP4346803B2 - Surface guard guard lock. - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a surface guard arm lock, and more particularly to a surface guard arm lock capable of operating and releasing an indoor guard arm device from the outdoor side via a cylinder lock and a key.
[0002]
[Prior art]
For example, as described in Japanese Utility Model Publication No. 3-39585, the guard arm device is projected in one step when the guard arm device is operated, and its tip is expected to be fixed to the fixed shaft. It engages with the engagement hole at the lower end of the guard arm pivotally supported in the direction, regulates the door opening angle below a certain level, and safely confirms the visitor and delivers mail etc. is there.
[0003]
[Problems to be solved by the invention]
The above-described conventional guard arm device has a simple structure and can reliably keep the door opening angle below a certain level in the unlocked state, so that visitors can be confirmed and mail can be delivered. It only works when you are indoors, and has no use when you go out.
[0004]
Therefore, the present invention provides a novel guard arm lock with a face that can be operated and released from the outside of the room through a cylinder lock and a combined key, and thereby prevents door door crime prevention. The purpose is to improve the above safety.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention according to claim 1 is directed to a housing mounted on the inner surface of a door and a horizontal storage hole formed in the housing so as to be able to advance and retreat freely. An engaging portion that is supported so as to be freely movable and that is linked to the guard arm at the tip, an inclined groove on both sides, and an engaging hole at the tip, and a rear end of the locking rod. A first coil spring for urging the locking rod in the forward direction and urging the engagement hole of the locking rod in a direction to engage with a protrusion protruding from the opening of the storage hole; and the center of the housing A center frame having a bearing hole substantially in the center and a slidably mounted on both sides of the center frame, and a pair of engagement pieces at the distal ends engaged with the inclined grooves of the locking rod. Sliders and bullets at the rear edge of each slider A pair of second coil springs which are a cylinder lock mounted on the bearing bore coaxial to the outer surface of the door, the operation shaft connected coaxially through the tailpiece to the inner cylinder of the cylinder lock, and this operation provided with a pair of arms extending radially outwardly from the axis, the inner end is fitted into the bearing hole of the center frame, and the arm is engaged from the front to the stepped portion formed in the rear end portion of the slider operating By rotating the inner cylinder of the cylinder lock in the clockwise direction or counterclockwise when going out, one of the pair of arms of the operation piece moves backward against the elasticity of the second coil spring. A projection protruding from the engagement hole of the locking rod and the opening of the storage hole by moving the front end of the locking rod upward by the wedge action acting between the front end of the slider and the inclined groove of the locking rod. Release the engagement with the locking rod The resilience of the first spring, characterized in that so as to protrude guard arm direction.
[0006]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
In FIG. 1, reference numeral 10 denotes a guard arm mechanism. The guard arm mechanism 10 has a fixed substrate 11 fixed to the door frame, and the guard substrate 13 is connected to the fixed substrate 11 via a pivot 12. Is pivotably supported in the prospective direction.
[0007]
The guard arm 13 includes a first arm 13a fitted to the pivot 12 and a second arm 13b loosely fitted to the first arm 13a so as to be movable in the axial direction and having an engagement hole 14. It is composed of
[0008]
In this embodiment, the guard arm 13 is configured to be extendable and contractible in the axial direction. However, the present invention is not limited to this type of guard arm, and can be applied to various types of guard arms that exist in the past. .
[0009]
The guard arm mechanism 10 having the above-described configuration is combined with a faced guard arm lock 15 described below to constitute a novel guard arm device.
[0010]
The guard arm lock 15 with a face includes a housing 18 that is attached to the inner surface of the door D using screws, and a cylinder lock 1 that is attached to the outer surface of the door. As will be described later, when the guard arm device is in operation, A hook-like engagement portion 17 at the tip of the locking rod 16 engages with the engagement hole 14 of the guard arm 13.
[0011]
As shown in FIGS. 6 and 7, the locking rod 16 is accommodated in a horizontal accommodation hole 19 formed in the housing 18, and is guided so as to be movable in the front-rear direction (left-right direction in the figure).
[0012]
In addition, the size of the storage hole 19 in the expected direction is set slightly larger than the size of the locking bar 16, so that the locking bar 16 is positioned in the expected direction (the vertical direction in FIGS. 6 and 7). ).
[0013]
A first coil spring 20 is elastically mounted on the rear end (the left end in FIGS. 6 and 7) of the locking rod 16, and the elastic force of the first coil spring 20 causes the locking rod 16 to move forward. That is, it is biased in a direction to engage with the guard arm 13.
[0014]
Further, the mounting positions of the front and rear ends of the first coil spring 20 (respectively the rear end of the locking rod 16 and the inner surface of the storage hole 19) are slightly different in the prospective direction, and as shown in FIG. The front end of the locking rod 16 is biased in the direction approaching the door.
[0015]
Next, the back cover of the surface guard arm lock will be removed and the internal structure will be described in detail.
As shown in FIG. 5, a recessed engagement hole 21 is formed on the lower surface of the distal end portion of the locking rod 16, and a predetermined length of length is formed on both sides of the lower surface of the locking rod 16. First and second engagement grooves 22 and 23 are formed.
[0016]
Of these, the first engagement groove 22 is an inclined groove 22a having a downward slope toward the tip, and the engagement groove 23 is a combination of a notch 23a and an inclined groove 23b.
[0017]
A projection 24 (see FIG. 6) that engages with the engagement hole 21 is formed at the outer end edge of the accommodation hole 19 of the housing 18 when the locking rod 16 is accommodated, that is, when unlocked.
[0018]
As shown in FIG. 7, a stepped portion 33 is formed at the rear end (left end) of the locking rod 16, and the locking rod 16 protrudes from the housing 18 as shown in FIG. 6. The step portion 33 engages with a slider engagement piece 30d described later.
[0019]
On the other hand, when the back cover 25 of the housing 18 is removed, as shown in FIG. 5, the center frame 26 is disposed along the longitudinal center line of the housing 18, and the center frame 26 is shown in FIG. Further, it is formed in a channel-shaped member, and receiving pieces 27 are formed on both ends toward the outside.
[0020]
A bearing hole 29 into which a shaft end of an operation piece 28 described later is inserted is formed at the center of the center frame 26.
[0021]
Further, as shown in FIG. 5, first and second sliders 30 and 31 that slide in the front-rear direction are provided on both sides of the center frame 26, and each slider is moved forward by a second coil spring 32. The spring is biased (to the right in FIG. 5).
[0022]
Each slider 30 and 31 is arranged on the object with respect to the longitudinal center of the center frame 26.
[0023]
FIG. 11 is a perspective view of one of them, and an engagement piece 30a and a spring seat 30b project from the rear end, and an arm 30c extends forward from the inner end, and its front end. An engagement piece 30d is provided on the front side.
[0024]
When the locking bar 16 protrudes to the maximum extent during locking, the locking bar 30d comes into contact with the end of the locking groove 23 of the locking bar 16 (see FIG. 6). The locked state of the heel 16 is maintained. In addition, the code | symbol 34 (refer FIG. 8) has shown the stopper (refer FIG. 13).
[0025]
FIG. 12 shows the operation piece 28, which includes a journal 28a that fits in the bearing hole 29 of the center frame 26, arms 28b and 28c that extend radially outward, and an inner cylinder of a cylinder lock. It comprises an operation shaft 28d that is rotated.
[0026]
On the other hand, a chevron 35 is formed on the front side of the housing 18 along the central longitudinal direction. As is clear from FIG. 9, the manual operator 36 slides within a predetermined range across the chevron 35. It is installed as possible.
[0027]
The manual operator 36 is configured such that a person in the room can move the locking rod 16 back and forth by picking it with a finger and moving it to the left and right.
[0028]
For this purpose, the manual operator 36 and the locking rod 16 are coupled by a pin 37, and a guide groove 38 in a range in which the locking rod 16 can move is formed on the side surface of the housing 18.
[0029]
In order to facilitate the movement of the manual operator 36, guide grooves 39 are formed near the lower side of the manual operator 36.
[0030]
In order to regulate the stroke range in which the guide grooves 39, 39 move, pins 40, 41 are attached to the housing side.
[0031]
On the other hand, as shown in FIGS. 3 and 4, the cylinder lock 1 is mounted on the portion of the outer surface of the door D aligned with the housing 18 so that the center of the key hole is coaxial with the bearing hole 29 (see FIG. 5). Yes.
[0032]
The inner cylinder of the cylinder lock is connected to the operation piece 28 via a tail piece (not shown).
[0033]
Next, the mode of use of the guard arm lock with a surface having the above-described configuration will be described.
When locking the guard arm lock 15 with the surface from the indoor side, the manual operator 36 is grasped and moved forward until it hits the stopper 41.
[0034]
Then, the engaging portion 17 at the tip of the locking rod 16 engages with the engaging hole 14 of the guard arm 13. When the door is opened in this state, the engaging portion 17 at the tip of the locking rod 16 causes the guard arm 13 to extend and swing out to the outdoor side.
[0035]
As a result, the opening angle of the door is limited, and it is possible to safely confirm the visitor and deliver the mail.
[0036]
Next, when going out, the guard arm 13 is placed at a vertical angular position by a moment due to its own weight, and after opening the door and going out, the door is closed and locked. Next, for example, the same key is inserted into the key hole of the cylinder lock 1, and the inner cylinder is rotated clockwise or counterclockwise.
[0037]
Then, the operation piece 28 also rotates integrally with the inner cylinder, and one of the arms 28 b of the operation piece 28 moves the first slider 30 backward, for example, against the elasticity of the second coil spring 32.
[0038]
Then, in FIG. 7, the first slider 30 moves to the left and engages with the inclined groove 23b of the locking rod 16, so that the front end of the locking rod 16 moves upward due to the wedge action acting between them. The engagement between the engagement hole 21 and the protrusion 24 is released.
[0039]
As a result, the locking rod 16 protrudes forward due to the elasticity of the first coil spring 20, and the engagement portion 17 at the tip thereof engages with the engagement hole 14 of the guard arm 13 to complete the locked state. Incidentally, it goes without saying that the main cylinder lock which is normally attached is locked.
[0040]
In such a state, even if a malicious third party tries to open the door after unlocking the main cylinder lock by picking, the door guard arm lock 15 of the present invention works, so the door has an opening angle below a certain level. Because it is restricted, it cannot enter the room.
[0041]
On the other hand, if the resident who owns the proper combination key returns home and unlocks the main cylinder lock and the cylinder lock 1 of the guard arm lock 15 with the face, the arm of the operation piece 28 is moved to the first and second coil springs 20 and 32. Against the elasticity of the slider and through the engagement between the slider engagement piece 30d and the stepped portion 33 (see FIG. 6), the engagement rod 17 is pulled in (see FIG. 7). And the guard arm can be disengaged to open the door.
[0042]
【The invention's effect】
As is apparent from the above description, according to the present invention, since the guard arm lock with the face that can be locked or unlocked by the key operation from the outside of the door is provided on the inside of the door, the main cylinder device should be unlocked. Even if it is done, the guard arm lock with a face works, it can restrict the opening of the door and prevent a malicious third party from entering the room.
[0043]
Moreover, since the housing and the cylinder lock are provided with a surface, various effects such as being applicable to an existing door can be obtained.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of a guard arm mechanism.
FIG. 2 is a front view showing a guard arm and a guard arm lock with a surface in a locked state.
FIG. 3 is a plan view showing a guard arm and a guard arm lock with a surface in a locked state.
FIG. 4 is a side view showing a faced guard arm lock in a locked state.
FIG. 5 is a rear view of the guard arm lock with a surface in a locked state.
FIG. 6 is a partial cross-sectional view of a guard arm lock with a surface in a locked state.
FIG. 7 is a half cross-sectional view of a faced guard arm lock in an unlocked state.
FIG. 8 is a rear view of a guard arm lock with a face incorporating an operation piece.
FIG. 9 is a side view of a guard arm lock with a surface.
FIG. 10 is a rear view of the guard arm lock with a surface showing a state where the back cover is closed.
FIG. 11 is a perspective view showing one of the sliders.
FIG. 12 is a perspective view showing an operation piece.
FIG. 13 is a perspective view showing a slider.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Guard arm mechanism 13 Guard arm 14 Engagement hole 15 Faced guard arm lock 16 Engagement rod 17 Engagement part 18 Housing 19 Storage hole 20 First coil spring 21 Engagement hole 22 First engagement groove 23 Second engagement Groove 24 Projection 26 Center frame 28 Operation piece 29 Bearing hole 30 First slider 31 Second slider 32 Second coil spring 33 Step portion 36 Manual operator

Claims (1)

A housing mounted on the inner surface of the door, and an engaging portion that is guided to move forward and backward in a horizontal storage hole formed in the housing, is supported so as to be freely movable in the prospective direction, and is linked to the guard arm at the tip. Acting on the rear end of the locking rod with the inclined grooves on both sides and the engaging hole at the tip, and urging the locking rod in the forward direction, A first coil spring that urges the joint hole in a direction to engage with a protrusion projecting from the opening of the storage hole, and a center frame that is mounted along the horizontal direction at the center of the housing and has a bearing hole at the center. A pair of sliders that are slidably attached to both sides of the center frame and whose engaging pieces at the front ends engage with the inclined grooves of the locking rods, and a pair of second sliders that are elastically mounted on the rear ends of the sliders. Coil spring and the above shaft on the outer surface of the door A cylinder lock mounted in a hole coaxial with, the operation shaft connected coaxially through the tailpiece to the inner cylinder of the cylinder lock, and with a pair of arms that extend radially outward from the operating shaft, the inner the end is fitted into the bearing hole of the center frame and arm and an operating piece which is engaged from the front to the stepped portion formed in the rear end portion of the slider, clockwise inner cylinder outings when the cylinder lock Alternatively, by rotating counterclockwise, one of the pair of arms of the operation piece retracts one of the sliders against the elasticity of the second coil spring, and between the front end of the slider and the inclined groove of the locking rod. The front end of the locking rod is moved upward by the acting wedge so that the engagement between the engagement hole of the locking rod and the protrusion protruding from the opening of the storage hole is released, and the locking rod is elasticized by the first spring. To project toward the guard arm Imposition guard arm lock, characterized in that was Unishi.

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