JP2004232208A - Thumb-turn protective cap of vestibule door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thumb-turn protective cap of a vestibule door easily installable on an existing locking device, and surely checking thumb-turn rotation from the outdoor side by a simple constitution. <P>SOLUTION: This thumb-turn protective cap of the vestibule door is arranged on the indoor side of the locking device of the vestibule door, and protects thumb-turn for putting the vestibule door in a locking state by rotational operation, and is characterized in that the protective cap has a peripheral wall for forming an inner peripheral surface having the substantially same inner diameter as the outer peripheral surface of a thumb-turn case for rotatably supporting the thumb-turn, and the tip of the peripheral wall surface projects from the tip of the thumb-turn when installing the protective cap on the thumb-turn case by matching the inner peripheral surface of peripheral wall part with the outer peripheral surface of the thumb-turn case. The outer peripheral surface of the peripheral wall is formed of an inclined face diametrally large on the base part side and diametrally small on the tip side. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front door thumb-turn protection cap for preventing a thumb-turn provided on a locking device portion of a front door from rotating from the outdoor side.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an entrance door is provided with a locking device that includes a cylinder lock or the like and that is forcibly locked from an indoor side or an outdoor side. In many cases, this locking device is integrally provided with a thumb turn that can be easily locked from the indoor side, but this thumb turn is turned to facilitate the turning operation. In general, it projects from the thumb-turn case, which is supported as much as possible, toward the indoor side by a predetermined size.
[0003]
However, in such a locking device integrally provided with a thumb-turn, the thumb-turn may be rotated from the outdoor side, that is, the thumb-turn may be unlocked, which is not preferable for crime prevention. A thumb-turn lock device as shown in Document 1 has been proposed. When the deadbolt is not in the locking position, when the key is locked from the outdoor side, the thumbturn lock device moves the deadbolt to the locking position and simultaneously fixes the thumbturn lever to fix the deadbolt in the locking position. It was made.
[0004]
[Patent Document 1]
JP 2001-193326 A
[Problems to be solved by the invention]
However, in this thumb-turn lock device, a dead-bolt or the like is provided in the thumb-turn lock, and the thumb-turn lever is operated in association with the thumb-turn lever. There is a problem that it is necessary to replace the already installed locking device, and it is difficult to easily apply the locking device to an entrance door of a general home or the like from the viewpoint of cost and work period.
[0006]
SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to provide an entrance door that can be easily attached to an existing locking device by a simple configuration and that can reliably prevent a thumb turn from the outdoor side. Another object of the present invention is to provide a thumb-turn protective cap.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 of the present invention is an entrance door provided on an indoor side of a door door locking device for protecting a thumb turn that locks the entrance door by a rotating operation thereof. Wherein the protective cap has a peripheral wall portion formed with an inner peripheral surface having substantially the same inner diameter as an outer peripheral surface of a thumb turn case that rotatably supports the thumb turn, and an inner peripheral surface of the peripheral wall portion. When the protective cap is attached to the thumb turn case such that the surface is aligned with the outer peripheral surface of the thumb turn case, the tip of the peripheral wall portion projects from the tip of the thumb turn.
[0008]
With this configuration, when the protective cap is attached to the thumb turn case such that the inner peripheral surface of the peripheral wall portion matches the outer peripheral surface of the thumb turn case, the distal end of the peripheral wall portion projects from the distal end of the thumb turn. As a result, the periphery of the rotatable thumb turn is surrounded by the peripheral wall of the protective cap, and only the rotating operation can be performed from the front of the opening of the protective cap, and it is possible to prevent the thumb turn from being outdoors. It becomes.
[0009]
Preferably, the outer peripheral surface of the peripheral wall portion is formed as an inclined surface having a large diameter at the base side and a small diameter at the distal end side, as in the second aspect of the invention. With this configuration, since the peripheral wall portion of the protective cap is formed with an inclined surface, even when a string or the like is inserted from the outdoor side, the string slides on the inclined surface. Locking to the protective cap is suppressed, and it is possible to more effectively prevent thumb-turning.
[0010]
Further, the peripheral wall portion has a bottom wall portion in which a thumb-turn insertion groove and a screw insertion groove are formed on one opening side, as in the invention according to claim 3, and a thumb-turn insertion groove of the bottom wall portion. It is preferable that the protective cap is attached to the thumb turn case by screwing a screw from the screw insertion groove into the thumb turn case with the thumb turn inserted. In this case, it is preferable that the screw insertion groove is formed by a plurality of long grooves having a predetermined length, as in the invention according to a fourth aspect.
[0011]
With this configuration, the protective cap is formed in a substantially bottomed cylindrical shape with the peripheral wall portion and the bottom wall portion, and the bottom wall portion is provided with the thumb-turn insertion groove and the screw insertion groove. The bottom wall can be attached to the thumb-turn case using the screw insertion groove while the thumb-turn is inserted, so that the protective cap can be easily attached even to the existing door locking device. In addition, since the screw insertion groove is formed by a plurality of long grooves, the protective cap can be easily mounted using the long grooves even in various locking devices in which the positions of the screws for attaching the thumb turn are different.
[0012]
Further, the peripheral wall portion is formed in a ring shape and the inner peripheral surface is fitted to the outer peripheral surface of the thumb turn case, so that the protective cap is attached to the thumb turn case. Preferably. With this configuration, since the protective cap is formed in a ring shape, the protective cap can be attached to the thumb turn case very easily only by fitting the inner peripheral surface to the outer peripheral surface of the thumb turn case, for example.
[0013]
Further, the peripheral wall portion is, as in the invention according to claim 6, a first peripheral wall portion attached to a thumb turn case, and is attached to the first peripheral wall portion so as to be able to advance and retreat, and when it advances, its tip is a thumb turn case. It is preferable that the tip is formed by the tip of the thumb turn case and the second peripheral wall portion located substantially flush or inward when the tip of the thumb turn case projects and retracts from the tip of the thumb turn case.
[0014]
With this configuration, the first peripheral wall portion is formed by the first peripheral wall portion attached to the thumb turn case and the second peripheral wall portion movably disposed on the first peripheral wall portion. By attaching the to the thumb turn case and setting the second peripheral wall to the retracted position, the tip of the second peripheral wall does not protrude from the tip of the thumb turn case, and the protective cap adversely affects the turning operation of the thumb turn. Disappears. In addition, by setting the second peripheral wall at the advanced position with respect to the first peripheral wall, the thumb turn is covered by the second peripheral wall, and it is possible to prevent the thumb turn from being performed. Thus, the protective cap can be easily attached to the existing thumb turn case without deteriorating its usability.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 5 show an embodiment of a protective cap according to the present invention. FIG. 1 is a perspective view of an entrance door to which the protective cap is attached, and FIG. 2 is a perspective view of a main part with the protective cap attached. , FIG. 3 is a side view in which a part thereof is sectioned, FIG. 4 is a front view of the protective cap, and FIG. 5 is a half sectional view thereof.
[0016]
In FIG. 1, an entrance door 1 has a door body 2, a glass 3 is attached to a central portion of the door body 2 by a picture frame 4, and a locking device 5 is attached to an end 2 a of the door body 2 on the side opposite to the hinge. Is attached. The locking device 5 has, for example, a cylinder lock which can be forcibly locked or unlocked by a key from the indoor side and the outdoor side. Are provided integrally.
[0017]
The thumb turn 6 is rotatably supported by a thumb turn case 7 having an outer peripheral surface 7a formed in a circumferential shape. On the front surface of the thumb turn case 7, a thumb turn mechanism (not shown) inside the case 7 is fixed. For example, two screws 8 are provided. By rotating the thumb turn 6 in the locking direction as shown by the arrow A, the lock bar 9 advances from the end surface 2b of the door body 2 as shown by the arrow B, and is locked by a locking hole of a door frame (not shown). Thus, it is configured to be in a locked state.
[0018]
Then, a protective cap 10 is attached to the thumb turn case 7. As shown in FIGS. 3 and 4, the protective cap 10 is formed by cutting a metal material such as aluminum or a resin molded product, and has a cylindrical peripheral wall portion 10a having a predetermined width, and one of the peripheral wall portions 10a. The inner wall of the inner peripheral surface 11 of the peripheral wall 10a is substantially the same as the outer diameter of the outer peripheral surface 7a of the thumb-turn case 7. Is set. The outer peripheral surface 12 of the peripheral wall portion 10a is formed as an inclined surface having a conical surface whose diameter is large on the bottom wall portion 10b side, which is the base side, and small on the opening 10c side, which is the distal end side.
[0019]
At the center position of the bottom wall portion 10b, a thumb-turn insertion groove 13 is formed in a rectangular shape having a width W1 and a length L1 in the diametric direction, through which the thumb-turn 6 is inserted as described later. A screw insertion groove 14 having a width W2 and a length L2 is formed by notching the bottom wall 10b in both directions orthogonally.
[0020]
As shown in FIGS. 2 and 3, the protective cap 10 having the above-described configuration is configured such that the thumb-turn case 7 has the screw 8 removed, and the thumb-turn insertion groove 13 formed in the bottom wall 10 b of the protective cap 10. Is inserted through the inside. Then, the screw insertion groove 14 of the bottom wall portion 10b is aligned with the hole in which the screw 8 of the thumb turn case 7 is inserted, and the removed screw 8 is screwed from the screw insertion groove 14 of the bottom wall portion 10b into the screw in the thumb turn case 7. The protective cap 10 is screwed into the hole 15 (see FIG. 3), and the bottom wall 10 b of the protective cap 10 is fixed to the front surface of the thumb-turn case 7.
[0021]
As a result, the protective cap 10 is attached to the thumb turn case 7 with the screw 8 screwed into the screw hole 15, and at this time, the height dimension H of the peripheral wall portion 10a of the protective cap 10 is set to a predetermined value. The distal end of the peripheral wall portion 10a projects outward from the distal end of the thumb turn 6 by a predetermined distance h. Further, the thumb turn 6 is inserted into the thumb turn insertion groove 13 of the bottom wall portion 10b so as to be rotatably disposed in the same manner as in a state where the protective cap 10 is not attached. The protective cap 10 is surrounded by the peripheral wall portion 10a, and the turning operation of the thumb turn 6 is allowed only from the opening 10c side of the protective cap 10, so that the thumb turn from the outdoor side can be prevented. It becomes.
[0022]
In this example, two screw insertion grooves 14 provided in the bottom wall portion 10b of the protective cap 10 are provided in the radial direction. However, three or more screw insertion grooves 14 may be provided in the radial direction, or one screw circumferential groove may be provided. Alternatively, a configuration in which a plurality of thumb turns 6 can be provided by providing a plurality of types may be employed.
[0023]
As described above, since the protective cap 10 of the above embodiment has the peripheral wall portion 10 a that can surround the periphery of the thumb turn 6, the inner peripheral surface 11 of the peripheral wall portion 10 a of the protective cap 10 is By attaching the thumb turn 6 to the thumb turn case 7 in a state where the thumb turn 6 is aligned with the surface 7a, it is possible to set the thumb turn 6 to a state in which the turning operation can be performed only from the opening 10c side of the protective cap 10, and it is possible to use a string or the like entered from the outdoor side. It is possible to prevent the thumb turn.
[0024]
In particular, since the height H of the peripheral wall portion 10a of the protective cap 10 is set so as to protrude a predetermined dimension h from the tip of the thumb turn 6, the peripheral wall portion 10a can reliably surround the periphery of the thumb turn 6, Since the outer peripheral surface 12 of the peripheral wall portion 10a is formed as an inclined surface, it is possible to prevent the entered string or the like from being locked to the outer peripheral surface 12, and it is possible to more efficiently prevent the thumb turn from being performed.
[0025]
Further, a thumb-turn insertion groove 13 and a screw insertion groove 14 are formed in the bottom wall portion 10b of the protection cap 10, and in a state where the thumb-turn 6 is inserted into the thumb-turn insertion groove 13, the protection cap 10 is utilized using the screw insertion groove 14. Since the protection cap 10 can be attached to the thumb turn 6, the protection cap 10 can be easily attached to the existing locking device 5 without replacing the locking device 5 itself. In particular, since the screw insertion groove 14 is formed by the long groove of the predetermined length L2, even if the position of the screw 8 is different from the thumb turn 6, the protective cap 10 having excellent versatility can be obtained. 6 can be easily attached.
[0026]
Further, since the protective cap 10 is formed of, for example, a cutting process of a metal material or a resin molded product, the protective cap 10 itself can be manufactured simply and inexpensively, and is used for the thumb-turn case 7 when the protective cap 10 is attached. The mounting screw can also be used, and a new mounting member is not required, and the mounting work can be easily performed by ordinary people. Therefore, the mounting cost can be reduced, and the thumb-turning countermeasures can be implemented at low cost. . Further, since the protective cap 10 is attached to the thumb turn case 7, it is not necessary to attach the protective cap 10 to the door main body 2, so that the door main body 2 is prevented from being worked or damaged, and the design value of the door main body 2 can be prevented from lowering.
[0027]
In the above embodiment, the protective cap 10 is provided with the peripheral wall portion 10a and the bottom wall portion 10b, and the protective cap 10 is attached to the thumb-turn case 7 using the bottom wall portion 10b. However, the present invention is limited to this configuration. Instead, for example, as in another embodiment shown in FIG. 6, the protective cap 10 can be formed in a ring shape.
[0028]
That is, the protective cap 10 is formed in a ring shape having a height H and a peripheral wall portion 10a composed of an inner peripheral surface 11 and an inclined outer peripheral surface 12, and the inner peripheral surface 11 of the protective cap 10 is Is fitted and attached to the outer peripheral surface 7a. At this time, the protection cap 10 is formed of, for example, a resin molded product, and the inner diameter r1 of the inner peripheral surface 11 is set to be slightly smaller than the outer diameter of the outer peripheral surface 7a of the thumb turn case 7, so that the elasticity of the protective cap 10 is reduced. It is set so that it can be attached to the thumb turn case 7 with a predetermined fitting strength by utilizing.
[0029]
Also in this protective cap 10, the peripheral wall portion 10a can surround the periphery of the thumb turn 6, and the same operation and effect as those of the above embodiment can be obtained. In addition, the configuration of the protective cap 10 itself is extremely simplified, and the mounting cost is reduced. The effect of being able to form at lower cost is obtained. In the case of this example, if the slit in the axial direction is formed in the peripheral wall portion 10a and the width of the slit can be adjusted by, for example, a bolt, the inner diameter r1 of the inner peripheral surface 11 can be adjusted, and the thumb turns having various outer diameters can be formed. The protective cap 10 can be attached to the case 7 and is more versatile.
[0030]
7 to 9 show still another embodiment of the protective cap according to the present invention. FIG. 7 is a front view, and FIGS. 8 and 9 are sectional views thereof. A feature of the protective cap 20 of this embodiment is that the peripheral wall 21 of the protective cap 20 is formed by a first peripheral wall 21a having a bottom wall 22 and a second peripheral wall attached to the first peripheral wall 21a so as to be able to advance and retreat. 21b.
[0031]
That is, the bottom wall portion 22 for attaching the thumb-turn case 7, the thumb-turn insertion groove 13, and the screw insertion groove 14 (not shown) are formed in the first peripheral wall portion 21 a, and the first peripheral wall portion 21 a has an inner end on the opening side. The locking part 23 is provided toward. The second peripheral wall portion 21b is provided with a locking portion 24 on the base side toward the outside, and the locking portion 24 is positioned inside the locking portion 23 of the first peripheral wall portion 21a. Then, the second peripheral wall portion 21b slides in the directions indicated by arrows c and d in FIG. 8 while the end surface of the locking portion 24 is in contact with the inner surface of the first peripheral wall portion 21a, so that the second peripheral wall portion 21b moves relative to the first peripheral wall portion 21a. The second peripheral wall portion 21b is prevented from coming off from the first peripheral wall portion 21a by being attached so as to be able to advance and retreat.
[0032]
The protective cap 20 is attached to the thumb turn case 7 using the bottom wall 22 of the first peripheral wall 21a and the screw insertion groove 14. For example, when the protective cap 20 is used to give the function of turning the thumb-turn to prevent the function during absence, etc., the second peripheral wall portion 21b of the protective cap 20 is pulled forward in the direction of arrow C in FIG. The distal end of the peripheral wall portion 21b protrudes from the distal end of the thumb turn case 7 by a predetermined distance (positioned forward). As a result, the periphery of the thumb turn 6 is covered with the second peripheral wall portion 21b, and the turning of the thumb turn 6 can be prevented by the second peripheral wall portion 21b.
[0033]
On the other hand, when not using the protection cap that does not have the function of turning the thumb and turning the protection cap 20, the second peripheral wall 21 b is retracted in the direction of arrow D to be positioned in the first peripheral wall 21 a as shown in FIG. The tip of the second peripheral wall portion 21b is positioned flush with or inside the tip of the thumb turn case 7 (toward the door body 2). As a result, the second peripheral wall portion 21b is no longer located around the thumb turn 6, and the thumb turn 6 is substantially in the same state as when the protective cap 20 is not attached, and the turning operation can be performed as usual. it can.
[0034]
Also in the protective cap 20 of this embodiment, the second peripheral wall portion 21b is advanced, so that it is possible to prevent the second peripheral wall portion 21b from turning the thumb turn six times, and the same operation as the protective cap 10 of the above embodiment. The effect can be obtained. In addition, according to the protection cap 20 of this embodiment, since the second peripheral wall portion 21b having a thumb-turn rotation preventing function is provided so as to be able to advance and retreat, the second peripheral wall is retracted when the protection cap 20 is not used. The portion 21b does not adversely affect the turning operation of the thumb turn 6 and can prevent the operability of the thumb turn 6 from being deteriorated, and can be set to be used or not used with the protective cap 20 attached, so that it is easy to use. It is possible to obtain a protective cap 20 which is excellent in quality and can be easily applied to various existing entrance doors 1.
[0035]
In this example, the second peripheral wall 21b can be held at the advanced position by a frictional force or the like between the end surface of the locking portion 24 of the second peripheral wall 21b and the inner surface of the first peripheral wall 21a. A screw portion is formed on the outer end surface of the locking portion 24, and this screw portion is screwed into a screw formed on the inner surface of the first peripheral wall portion 21a, so that the second peripheral wall portion 21b advances and retreats to the first peripheral wall portion 21a. It may be configured to stop at a desired position. Further, by forming the outer surface of the first peripheral wall portion 21a in a conical shape, it can be formed as an inclined surface similarly to the protective cap 10 of the above embodiment.
[0036]
The protective cap according to the present invention can be used for various types of thumb-turns such as an integral type thumb-turn or a separate-type thumb-turn, and the protective cap in the above embodiments has a peripheral wall (a first peripheral wall, a second peripheral wall) and a bottom. The shape of the wall portion can be appropriately changed according to the shape of the thumb turn or the thumb turn case.
[0037]
【The invention's effect】
As described above in detail, according to the first aspect of the present invention, when the inner peripheral surface of the peripheral wall portion of the protective cap is attached to the outer peripheral surface of the thumb-turn case and attached, the distal end of the peripheral wall portion has the distal end of the thumb-turn. Because the protruding part further protrudes, the periphery of the rotatable thumb turn is surrounded by the peripheral wall of the protective cap, so that it is possible to prevent the turning of the thumb turn from outside and it is easy even with the existing locking device. And it can be installed at low cost.
[0038]
According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, since the peripheral wall portion of the protective cap is formed with an inclined surface, a string or the like inserted from the outdoor side is inclined. As a result, it is possible to prevent the thumb turn from being carried out from the outside more effectively.
[0039]
According to the third aspect of the present invention, in addition to the effects of the first or second aspect, the protective cap is formed in a cylindrical shape with a bottom on the peripheral wall and the bottom wall, and the thumb cap is formed on the bottom wall. Since the insertion groove and the screw insertion groove are provided, the bottom wall can be attached to the thumb turn case using the screw insertion groove with the thumb turn inserted in the thumb turn insertion groove, and the existing entrance door locking device Even if there is, the protection cap can be easily attached.
[0040]
According to the invention described in claim 4, in addition to the effect of the invention described in claim 3, since the screw insertion groove is formed by a plurality of long grooves, various locking devices in which the position of the screw for attaching the thumb turn is different. However, the protective cap can be easily attached using the long groove.
[0041]
According to the fifth aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, since the protective cap is formed in a ring shape, its inner peripheral surface is formed on the outer peripheral surface of the thumb-turn case. The protective cap can be attached to various locking devices very simply and inexpensively only by fitting.
[0042]
According to the sixth aspect of the invention, in addition to the effects of the first to fifth aspects, in addition to the first peripheral wall portion, the peripheral wall portion is attached to the thumb turn case, and the first peripheral wall portion is disposed so as to be able to advance and retreat. Since the second peripheral wall is provided with the second peripheral wall, the protective cap does not adversely affect the turning operation of the thumb turn by setting the second peripheral wall to the retracted position, and the second peripheral wall protrudes. By setting the position, it is possible to prevent the turning of the thumb-turn, and it is possible to easily obtain a protective cap which is excellent in usability and can efficiently prevent the turning of the thumb-turn.
[Brief description of the drawings]
FIG. 1 is a perspective view of an entrance door to which a protective cap according to the present invention is attached. FIG. 2 is a perspective view of a main part with the protective cap attached. FIG. FIG. 4 is a front view of the protective cap. FIG. 5 is a half sectional view of the protective cap. FIG. 6 is a perspective view similar to FIG. 2 of another embodiment of the protective cap according to the present invention. FIG. 8 is a front view of a protective cap of another embodiment. FIG. 8 is a sectional view of the protective cap when it is used. FIG. 9 is a sectional view of the protective cap when it is not used.
1 door door 2 door body 2a end 2b end face 5 Locking device 6 Thumb turn 7 Thumb turn case 7a Outer peripheral surface 8 Screw 9 Lock bar 10 Protective cap 10a Peripheral wall 10b Bottom wall 10c Opening 11 Inner peripheral surface 12 Outer peripheral surface 13 Thumb turn insertion groove 14 Screw Insertion groove 20 Protection cap 21 Peripheral wall 21a First peripheral wall 21b Second peripheral wall 22 ..... Bottom wall parts 23, 24 ... The locking portion

Claims (6)

A thumb-turn protection cap for an entrance door, which is provided on the indoor side of a door-door locking device and protects a thumb-turn that locks the entrance door by a rotation operation thereof,
The protective cap has a peripheral wall portion having an inner peripheral surface having substantially the same inner diameter as the outer peripheral surface of the thumb turn case that rotatably supports the thumb turn, and the inner peripheral surface of the peripheral wall portion is formed on the outer peripheral surface of the thumb turn case. A thumb turn protection cap for an entrance door, wherein a tip of a peripheral wall portion protrudes from a tip of the thumb turn when the protection cap is attached to the thumb turn case in a matching manner. 2. The thumb-turn protective cap for an entrance door according to claim 1, wherein an outer peripheral surface of the peripheral wall portion is formed by an inclined surface having a large diameter on a base side and a small diameter on a distal end side. 3. The peripheral wall portion has a bottom wall portion in which a thumb-turn insertion groove and a screw insertion groove are formed on one opening side. The thumb-turn protection cap for an entrance door according to claim 1 or 2, wherein the protection cap is attached to the thumb-turn case by being screwed into the case. The thumb-turn protection cap for an entrance door according to claim 3, wherein the screw insertion groove is formed by a plurality of long grooves having a predetermined length. The said peripheral wall part is formed in ring shape, The inner peripheral surface is fitted in the outer peripheral surface of a thumb-turn case, and a protective cap is attached to a thumb-turn case, The Claim 1 or 2 characterized by the above-mentioned. Thumbnail protection cap for front door. The peripheral wall portion is a first peripheral wall portion attached to the thumb turn case, and is mounted on the first peripheral wall portion so as to be able to advance and retreat. The thumb-turn protective cap for an entrance door according to any one of claims 1 to 5, wherein the thumb-turn protective cap is formed by a tip end of the thumb-turn case and a second peripheral wall portion located substantially flush or inside.

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