JP4279601B2 - Security thumb turn - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crime prevention thumb turn in which a thumb turn knob that allows a lock bolt to move forward and backward can be idled or detached, and more specifically, enables determination of a locked / unlocked state and enables switching between right and left hands. Related to improved technology.
[0002]
[Prior art]
In recent years, glass for the purpose of enhancing luxury and grace on the opening and closing bodies such as entrance doors of condominiums and houses, or on the wall portion around the opening frame body (door frame) in the vicinity of the opening and closing bodies such as these entrance doors. The thing with the small window which inserted the board has come to be used frequently. However, in such a small window of the opening and closing body and a small window of the wall part, when the glass plate is broken, it is possible to insert a wire or a rod with its tip bent into a bowl shape from the outside, or insert a hand. There is a risk that the thumb turn will be manipulated illegally.
[0003]
Therefore, a security thumb turn has been proposed in which the thumb turn knob is idled in a normal state or a cylinder lock is provided inside the door and the combined key of the cylinder lock is used as a thumb turn knob.
[0004]
That is, the crime prevention type thumb turn disclosed in the following Patent Document 1 is provided with a thumb turn cylinder with a built-in cylinder lock on the indoor side of the door surface, and is movable parallel to the door surface on the indoor side end surface portion of the thumb turn cylinder. The guided key lock stopper allows the key lock of the cylinder lock to be attached in a stable state, and the key lock can be removed from the cylinder lock by operating the key lock stopper. Thereby, even if the glass plate fitted in the door is destroyed by an outside intruder and the hand is inserted into the indoor side, the thumb turn cannot be operated.
[0005]
Moreover, the door lock disclosed by the following patent document 2 is provided with the inner cylinder which attaches to the inner plate of a door and performs locking / unlocking operation from the inside. The inner cylinder is detachably provided with a thumb turn for locking and unlocking from the inside. The thumb turn has a configuration in which a key is integrally provided inside a substantially cylindrical knob, and is locked and unlocked by inserting the key into an inner cylinder when in use. When the unlocking operation is unnecessary, the thumb turn can be removed from the inner cylinder and stored. By removing the thumb turn in this way, the inner cylinder can be kept in a state where the key is not always attached, and unauthorized unlocking from the outside of the door through the gap with the door frame can be prevented.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-200678
[Patent Document 2]
Utility Model Registration No. 3092805
[0007]
[Problems to be solved by the invention]
However, the conventional crime prevention type thumb turn and door lock described above have a problem that when the thumb turn is removed, the rotation position of the knob cannot be recognized, and the locked / unlocked state cannot be confirmed. This makes it difficult to predict the operation from locking to unlocking, or from unlocking to locking, causing erroneous operation and reducing operability.
[0008]
Also, the door has left and right sides, and the case is divided into a case where the lock box is provided on the right side of the door and a case where it is provided on the left side. The rotation operation direction of the thumb turn is reversed between the left hand and the right hand. Under such circumstances, it is preferable that the security thumb turn be a shared product that can be switched between right and left. However, in the crime prevention thumb turn having the above-described picking / removing structure, if a marking means for easily recognizing the picking rotation position is provided, the marking must be changed when the right and left hand changes, and this kind of crime prevention is particularly important. It was difficult to ensure operability during the thumb turn.
[0009]
The present invention has been made in view of the above situation, and can provide a security thumb turn that can be switched between the left and right sides, and can determine the unlocked / unlocked state, improving the operability while ensuring versatility. The purpose is to plan.
[0010]
[Means for Solving the Problems]
Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The crime prevention thumb turn C according to claim 1 of the present invention is attached to the door 1 in which the locking bolt in the lock box A is advanced and retracted by the locking and unlocking operation of the cylinder lock 5 from the outdoor side, so that the locking bolt can be advanced and retracted. The security thumb turn C in which the picking of the thumb turn 17 is idled or detachable,
A thumb turn base 23 which is attached to the indoor surface of the door 1 and holds the thumb turn 17;
The thumb turn base 23 is detachably provided to transmit the rotational operation force of the thumb turn 17 to the lock box A, and at a predetermined length such as ¼ of the circumference within the operation range in the circumferential direction. A thumb turn core 31 formed of a segment gear in which a portion 33 is formed;
A marking gear 37 detachably provided on the thumb turn base 23 and interlocking with the thumb turn core 31;
A core rotation position mark 51 provided on the thumb turn core 31;
Left and right hand markers 69 and 71 for the core which are provided on the thumb turn base 23 and indicate the selective rotation position of the core rotation position marker 51;
Gear rotation position marks 57, 59 provided on the marking gear 37;
Left and right hand marks 73 for gears that are provided on the thumb turn base 23 and indicate the selective rotation positions of the gear rotation position marks 57 and 59;
A window 75 provided in the thumb turn base 23;
A visual recognition mark 81 provided on the marking gear 37 for performing a different marking on the window portion 75 at every predetermined rotation angle;
With
By mounting the thumb turn core 31 on the thumb turn base 23 so that the core rotation position mark 51 is aligned with the right mark 69 or the left mark 71 of the left / right hand mark for the core, the left / right hand of the thumb turn core 31 is attached. By setting either one of them and attaching the marking gear 37 with the left-handed gear mark 57 or the right-handed gear mark 59 of the gear rotation position mark in the same manner as the setting, the sign corresponding to the left and right hand It is characterized by switching.
[0011]
In this crime prevention thumb turn C, the rotation position of the marking gear 37, that is, the locking / unlocking state of the lock box is always indicated on the window 75, and the locking / unlocking state of the locking bolt that cannot be recognized depending on the rotation position of the knob is easily confirmed. Will be able to. As a result, in the security thumb turn C in which the unlocking state cannot be recognized depending on the rotation position of the knob, it becomes easy to recognize from locking to unlocking, or from unlocking to locking, and improve operability by eliminating erroneous operations. Can do. Further, the thumb turn core 31 is provided with the core rotation position mark 51, the marking gear 37 is provided with the gear rotation position marks 57 and 59, and the thumb turn base 23 is provided with the core left and right hand marks 69 and 71 and the gear left and right hand mark 73. It becomes possible to discriminate. Since the thumb turn core 31 and the marking gear 37 are detachably provided from the thumb turn base 23, the core rotation position mark 51 of the thumb turn core 31 is attached in accordance with the predetermined right and left hand marks 69 and 71 for the core. In addition, the gear rotation position marks 57 and 59 of the marking gear 37 can be set in accordance with the left and right hand marks 73 for the gear so that it can be easily switched to the unlocked / unlocked state mark corresponding to the right and left hand. It becomes possible.
[0012]
The crime prevention thumb turn C according to claim 2 is the crime prevention thumb turn C according to claim 1,
The thumb turn is a cylinder lock 17 provided on the indoor side,
The knob is a key of the indoor cylinder lock 17.
[0013]
In this security thumb turn C, the key is used even in the operation of locking and unlocking indoors, so that the thumb turn knob does not protrude on the indoor surface, and a wire is inserted from the door 1 or a small window around the door. Or unlocking operations by improper acts performed by inserting a hand or the like becomes invalid, and the crime prevention property is improved.
[0014]
The crime prevention thumb turn C according to claim 3 is the crime prevention thumb turn C according to claim 2,
The key of the indoor cylinder lock 17 and the key of the outdoor cylinder lock 5 are the same.
[0015]
In this crime prevention thumb turn C, the locking and unlocking operation outdoors and indoors can be performed with a single key, and the operability is improved.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of a security thumb turn according to the present invention will be described in detail with reference to the drawings.
1 is a front view of a security thumb turn according to the present invention, FIG. 2 is a rear view of FIG. 1, FIG. 3 is a longitudinal sectional view of an external cylinder unit and a security thumb turn, FIG. 4 is an exploded perspective view of the security thumb turn, and FIG. FIG. 6 is an explanatory diagram of the left-handed specification.
[0017]
As shown in FIG. 3, the door 1 is attached with a lock box A and an outdoor cylinder unit B that allows the lock box A to be locked and unlocked from the outdoor side. A security thumb turn C is attached to the surface of the door 1 on the outdoor side.
[0018]
The lock box A is built in, for example, an end portion of the door 1, and a front plate (not shown) fixed to the lock box A is attached to the front end surface of the door 1 so as to be exposed. A lock bolt (not shown) is built in the lock box A. This locking bolt is slid with respect to the lock box A by the operation of a first cylinder lock and thumb turn described later, and is advanced and retracted from the front plate of the door 1. That is, the door frame can be locked and unlocked. In addition, description of the specific mechanism is abbreviate | omitted here.
As this locking bolt, a guard bolt that locks on a guard arm attached to the door frame side and functions in the same way as a door chain, a dead bolt that becomes a main locking means, and an arc-shaped movable locus is projected. It includes a lock means for advancing and retreating from the upper or lower end surface of the door pad 1 and engaging with the door frame.
[0019]
The outdoor cylinder unit B is provided with a first cylinder lock 5 that is an outdoor cylinder lock and a second cylinder lock 7 that is an outdoor cylinder lock positioned vertically. In the first and second cylinder locks 5 and 7, the insertion port for the key is exposed to the outdoor side, and the rotary shafts 11 and 13 that are rotated by the key operation are protruded inside the outdoor cylinder unit B. The first and second cylinder locks 5 and 7 are rotated by the same key or different keys.
[0020]
A slide plate 15 is provided on the back surface of the outdoor cylinder unit B with the lock box A, and the slide plate 15 is slid in the vertical direction in FIG. In the present specification, the slide position above the slide plate 15 is referred to as “rotation prevention position”, and the slide position below the slide plate 15 is referred to as “position retracted from the rotation prevention position”.
[0021]
The slide plate 15 prevents the first cylinder lock 5 from rotating at the rotation prevention position, and allows the first cylinder lock 5 to rotate at a position retracted from the rotation prevention position. The slide plate 15 is biased to the upper rotation prevention position.
[0022]
As shown in FIG. 1, the crime prevention thumb turn C is provided with an indoor cylinder lock 17 serving as a thumb turn. A key (not shown), which is a knob, is inserted into the key hole of the indoor cylinder lock 17. The indoor cylinder lock 17 is rotated to operate a mechanism portion in the lock box A via a thumb turn core described later, and the locking bolt is moved forward and backward from the front plate of the door 1 to enable locking and unlocking. The slide plate 15 is moved from the “rotation prevention position” to the “position retracted from the rotation prevention position” by the rotation of the indoor cylinder lock 17.
[0023]
The crime prevention thumb turn C is provided with a bar-shaft-shaped switching button 19. One end of the switching button 19 is exposed to the indoor side, and the other end is engaged with the switching dharma 21 in the lock box A. One end of the switching button 19 can be rotated by, for example, a tool such as a minus driver or a thin plate member such as a coin. The switching button 19 is exposed on the indoor side surface of the security thumb turn C, but is covered with a blindfold tape, a seal or the like for preventing inadvertent operations at the time of shipment.
[0024]
The security thumb turn C has a removable key that serves as a thumb turn knob. Therefore, the key lock is used also in the operation of locking / unlocking indoors. As a result, the thumb turn knob does not protrude from the indoor surface, and a wire or a bar is inserted from the door 1 or a small window around the door. The unlocking operation by an illegal act performed by inserting a hand becomes invalid, and the crime prevention property is improved. The key of the indoor cylinder lock 17 and the key of the outdoor cylinder lock (first cylinder lock 5, second cylinder lock 7) can be the same. As a result, the locking and unlocking operation outdoors and indoors can be performed with a single key, and the operability is improved. The combined key of the indoor side cylinder lock 17 may be a dedicated key having a different configuration from the outdoor side cylinder lock (5, 17).
[0025]
Further, in the present embodiment, the case where the thumb turn is the indoor side cylinder lock 17 will be described as an example. However, the crime prevention thumb turn according to the present invention is replaced with the indoor side cylinder lock 17 and a thumb turn having a knob idling mechanism is provided. It may be used and configured. In addition, as long as it is removable, it is not limited to a joint key. In this case, the shape of the knob can be any shape.
[0026]
The security thumb turn C is attached to the indoor surface of the door 1 and has a thumb turn base 23 that holds the indoor cylinder lock 17. The thumb turn base 23 is connected and fixed to the outdoor cylinder unit B by screws or the like by screws 25 and 27. A thumb turn core 31 is detachably provided on the thumb turn base 23 on the surface facing the lock box A. The thumb turn core 31 transmits the rotational operation force of the indoor cylinder lock 17 to the lock box A, and in the circumferential direction. The tooth part 33 is formed in a predetermined length. The tooth portion 33 is formed in a circumferential length corresponding to a central angle of about 90 degrees, which is about ¼ of the circumferential length, and constitutes a so-called segment gear.
[0027]
A drive gear 35 is detachably provided on the thumb turn base 23, and the drive gear 35 meshes with a tooth portion 33 of the thumb turn core 31. In addition, a marking gear 37 is detachably provided on the thumb turn base 23, and the marking gear 37 is engaged with the drive gear 35. That is, the marking gear 37 is interlocked with the thumb turn core 31 via the drive gear 35.
[0028]
The thumb turn core 31 is received in the core receiving hole 39 of the thumb turn base 23. The drive gear 35 is supported by extrapolation on the shaft portion 41 of the thumb turn base 23. The marking gear 37 is accommodated in the gear accommodation hole 43 of the thumb turn base 23. The thumb turn core 31, the drive gear 35 and the marking gear 37 accommodated in the thumb turn base 23 in this way are held by fixing the back cover 45 to the thumb turn base 23 with screws 47 and 49.
[0029]
By the way, the end surface of the thumb turn core 31 is provided with a core rotation position mark 51 (indicated by ↑ (arrow) in FIG. 4). Further, the marking gear 37 is provided with a non-forming portion 55 of the tooth portion 53 in a part thereof, and a left-handed gear mark 57 (marked by “L” in FIG. 4) that is a gear rotation position mark is provided on the non-forming portion 55. , A right-handed gear mark 59 (indicated by “R” in FIG. 4), which is a gear rotation position mark, is provided.
[0030]
The back cover 45 is provided with an exposing hole 61 for exposing the end of the thumb turn core 31, a support hole 63 for the marking gear 37, and screw holes 65 and 67 for screws 47 and 49. The back cover 45 has a right mark 69 (indicated by “R” in FIG. 4) that is a left and right hand mark for the core that indicates a selective rotation position of the core rotation position mark 51 and a left that is a left and right hand mark for the core. A mark 71 (indicated by “L” in FIG. 4) is provided. The back cover 45 is formed with a notch 73 that is a left and right hand mark for gears that indicates a selective rotation position of the left hand gear mark 57 and the right hand gear mark 59 provided on the marking gear 37.
[0031]
On the surface side of the thumb turn base 23, a window portion 75 is formed in a part facing the end surface 37a (see FIG. 4) of the marking gear 37. In the present embodiment, the window 75 is formed in a substantially triangular shape. A visual recognition mark 81 is provided on the end surface 37 a of the marking gear 37. The visual recognition mark 81 is configured by a region in which a different marking is performed on the window portion 75 for each predetermined rotation angle of the marking gear 37. In the present embodiment, each region is configured to be distinguished by color coding, and the visual recognition mark 81 is provided for the yellow region 81b and the green region 81c with the red region 81a interposed therebetween. In the present embodiment, the red region 81a is in the range of about 90 °, and is colored or colored as a yellow region 81b of about 45 ° on both sides and a green region 81c of about 45 ° on the outer side. It is provided by sticking a sheet.
[0032]
The security thumb turn C can be arbitrarily set to the left and right by attaching the thumb turn core 31 with the core rotation position mark 51 aligned with the right mark 69 or the left mark 71 of the back cover 45. In addition, by attaching the left hand gear mark 57 and the right hand gear mark 59 to the notch 73 of the back cover 45 and attaching the mark gear 37, the sign corresponding to the left and right hand can be switched.
[0033]
In this embodiment, opening the door 1 to the indoor side is referred to as “inward opening”, opening the door 1 to the outdoor side is referred to as “outside opening”, and the hinge shaft that supports the door 1 opens the door 1. The left side when viewed from the side is referred to as “left hand”, and the hinge shaft supporting the door 1 as viewed from the side where the door 1 is opened is referred to as right side. In the present embodiment, an example will be described in which the security thumb turn C is set to the right hand.
In the case of setting the right hand, as shown in FIG. 5A, the arrow (↑) of the core rotation position mark 51 is set upward, and the right hand gear mark 59 (R) of the marking gear 37 is set in the notch 73. Is done. Further, in the case of the right hand, the “turn” mark 85 shown in FIG. 1 is provided on the left side and the “open” mark 87 is provided on the right side, and a “guard” mark 89 is provided in the middle. Is provided.
[0034]
In the case of setting the left hand, as shown in FIG. 6, the arrow (→) of the core rotation position mark 51 is set to the right side, and the left hand gear mark 57 (L) of the marking gear 37 is notched 73. Set to
[0035]
In the crime prevention thumb turn C, the thumb turn core 31 and the marking gear 37 are properly set at the time of factory shipment, at the time of installation on the door site, or when the positional deviation of the thumb turn core 31 or the like is adjusted. This setting is performed by removing the back cover 45 of the thumb turn base 23 and replacing the thumb turn core 31 and the marking gear 37 at a predetermined angle. At that time, the drive gear 35 may be substantially unchanged. That is, in the case of the right hand, the setting is made as shown in FIG. 5A, and in the case of the left hand, the setting is made as shown in FIG. 6A. At the time of this setting, as shown in FIGS. 5B and 6B, the end surface 37a viewed from the window 75 is a red region 81a.
[0036]
Next, the operation of the security thumb turn C configured as described above will be described.
FIG. 7 is an explanatory diagram when guarding, and FIG. 8 is an explanatory diagram when locking.
In addition, each cylinder lock described below is configured so that it can be inserted into and removed from the cylinder lock only when the key is in a horizontal state, and it is a rotation operation during the locking operation and the unlocking operation. The rotation range is set to about 90 °. That is, at the time of locking or unlocking operation, the key can be removed by inserting the key and rotating it by 90 ° to perform the locking or unlocking operation and then returning the rotation by 90 °.
[0037]
During the construction period or before normal use such as at the time of shipment, the switching dharma 21 is in a construction state in which it is arranged by being rotated 90 ° counterclockwise in the figure. In this state, the operation of the second cylinder lock 7 is disabled. Therefore, locking / unlocking (single lock) with only the first cylinder lock 5 or the indoor cylinder lock 17 is possible.
[0038]
On the other hand, after delivery, such as after the building is completed, the seal of the switch button 19 that is sealed is first peeled off indoors, and the switch button 19 can be operated. When the switching button 19 is rotated 90 °, the switching dharma 21 is similarly rotated 90 ° in the clockwise direction. Then, the slide plate 15 is moved to the rotation prevention position, and the rotation of the first cylinder lock 5 is prevented.
[0039]
In this double-locked state, locking from the outdoor side is performed by operating only the first cylinder lock 5 with a combined key. When the first cylinder lock 5 is operated with the key, the locking bolt of the lock box A is protruded and locked, and at the same time, the slide plate 15 is moved upward and moved to the rotation preventing position by the rotation operation of the key. It will be in the double lock state which controls rotation of cylinder lock 5.
[0040]
Only the indoor side cylinder lock 17 is operated for locking from the indoor side. When the indoor side cylinder lock 17 is operated from the unlocked state shown in FIG. 5, the lock bolt of the lock box A is projected and locked, and at the same time, the slide plate 15 is moved to the rotation preventing position, and the first cylinder It will be in the double lock state which controls rotation of lock 5. At this time, when the indoor cylinder lock 17 shown in FIG. 5B is rotated counterclockwise, the state shown in FIG. 8 is obtained, and the window 75 is provided on the end surface 37a of the marking gear 37. The green area 81c is marked so that the locked state can be visually recognized even when the key is removed.
[0041]
The first cylinder lock 5 is inoperable for unlocking from the outdoor side, and the second cylinder lock 7 is first operated. When the second cylinder lock 7 is operated with the key combination, the slide plate 15 is held at the position retracted from the rotation prevention position. As a result, the rotation restriction of the first cylinder lock 5 is released. Next, the first cylinder lock 5 is operated with the key, the locking bolt is retracted, and unlocking is completed.
[0042]
For unlocking from the indoor side, when only the indoor cylinder lock 17 is rotated, the slide plate 15 is moved from the rotation prevention position to the retracted position, and at the same time, the first cylinder lock 5 is rotated. The double lock state is unlocked at a time.
Thus, the state shown in FIG. 5 is obtained again, and a red region 81a is marked on the window 75, so that it can be visually recognized that the unlocked state is present even when the key is removed.
[0043]
In the present embodiment, when the indoor cylinder lock 17 is rotated 45 ° in the locking direction, the guard lock state is established. In this case, the slide plate 15 is not moved and the double lock state is maintained. At this time, the thumb-turn core 31 and the marking gear 37 are in the state shown in FIG. 7A, and the yellow region 81b is marked on the window 75 as shown in FIG. 7B so that the guard locked state can be visually recognized. become.
[0044]
Therefore, according to the crime prevention thumb turn, the rotational position of the marking gear 37, that is, the locking / unlocking state of the lock box A is always marked on the window 75, and the locking bolt unlocking / unlocking state which cannot be recognized depending on the rotation position of the knob. Can be easily confirmed. As a result, in the security thumb turn C in which the unlocking state cannot be recognized depending on the rotation position of the knob, it becomes easy to recognize from locking to unlocking, or from unlocking to locking, and improve operability by eliminating erroneous operations. Can do. In particular, operability can be improved in the case of a cylinder lock having a configuration in which the key is inserted and removed at a fixed position, for example, a horizontal position.
[0045]
The thumb turn core 31 has a core rotation position mark 51, the marking gear 37 has a gear rotation position mark (left hand gear mark 57, right hand gear mark 59), and the left and right hand marks for the core (right mark) on the back cover 45 of the thumb turn base 23. 69, left eye mark 71) and left and right hand mark for gear (notch 73) are provided, so that the right and left hand can be discriminated. And since the thumb turn core 31 and the marking gear 37 are detachably provided from the thumb turn base 23, the left and right sides can be set by mounting the core rotation position mark 51 of the thumb turn core 31 according to the predetermined right and left hand marks for the core. In addition, by mounting the gear rotation position mark of the marking gear 37 in accordance with the right and left hand mark for the gear, it is possible to easily switch to the locked / unlocked state mark corresponding to the right and left hand.
[0046]
By adopting such a configuration, it is easy to check the left and right hand, and it is possible to prevent setting mistakes in the left and right hand specifications. Furthermore, since the left and right sides can be changed according to the situation at the site, even if the thumb turn core 31 or the like is displaced during the thumb turn transportation, it can be easily adjusted and returned to the normal setting. .
[0047]
In the above-described embodiment, the example in which the thumb turn core 31 and the marking gear 37 are connected by the drive gear 35 has been described. However, the drive gear 35 may be composed of a plurality of parts or may not be interposed. Also good. The distance between the thumb turn core 31 and the marking gear 37 can be set by the drive gear 35, and the thumb turn core 31 and the marking gear 37 may be connected when the distance is shortened as an arrangement structure.
[0048]
Further, in the above-described embodiment, the example of the configuration of the outdoor cylinder unit B on the outdoor side has been described as a configuration that can perform a double lock with two sets of cylinder locks. It may be configured to be paired with a crime prevention thumb turn.
[0049]
Furthermore, in the above embodiment, the configuration that can be set in the guard lock state has been described as an example. However, the security thumb turn according to the present invention eliminates the setting in the guard lock state and performs only the operation of locking and unlocking. It goes without saying that the same effects as described above can be obtained even when applied to the structure.
[0050]
【The invention's effect】
As described above, according to the crime prevention thumb turn according to claim 1 of the present invention, the marking gear interlocked with the thumb turn core, the window portion provided on the thumb turn base, and the predetermined rotation angle provided on the marking gear. Since the window part is provided with visual markings for different markings, the lock part of the lock box is always indicated on the window part, and the lock bolt can be easily unlocked and unlocked depending on the rotary position of the knob. You will be able to confirm. This makes it easy to recognize from locked to unlocked or unlocked to locked in a security thumb turn where the unlocked state cannot be recognized depending on the rotation position of the knob, and can improve operability by eliminating erroneous operations. it can. The thumb turn core and marking gear are detachable from the thumb turn base. The thumb turn core has a core rotation position mark, the marking gear has a gear rotation position mark, and the thumb turn base has a left and right hand mark for the core and a right and left hand mark for the gear. The left and right sides can be discriminated, and the thumb turn core can be set to the left and right sides by installing the thumb rotation core mark according to the predetermined right and left hand mark for the core. By mounting the position mark in accordance with the right and left hand mark for the gear, it is possible to easily switch to the locked / unlocked state indication in the right and left hand.
[0051]
According to the crime prevention thumb turn according to claim 2 of the present invention, the thumb turn is a cylinder lock provided on the indoor side, and the knob is a key of the indoor cylinder lock. As a result, the thumb turn knob does not protrude on the indoor surface, and unlocking by unauthorized actions such as inserting a wire through the door or a small window around the door or inserting a hand The operation can be invalidated, and the crime prevention property can be improved.
[0052]
According to the crime prevention thumb turn according to claim 3 of the present invention, the key for the indoor side cylinder lock and the key for the outdoor side cylinder lock are the same. The operability can be improved.
[Brief description of the drawings]
FIG. 1 is a front view of a security thumb turn according to the present invention.
2 is a rear view of FIG. 1. FIG.
FIG. 3 is a longitudinal sectional view of an external cylinder unit and a security thumb turn.
FIG. 4 is an exploded perspective view of a security thumb turn.
FIG. 5 is an explanatory diagram of a right-handed specification.
FIG. 6 is an explanatory diagram of a left-handed specification.
FIG. 7 is an explanatory diagram for guarding.
FIG. 8 is an explanatory diagram at the time of locking.
[Explanation of symbols]
1 ... door
5, 7 ... Outdoor cylinder lock
17 ... Samturn (indoor cylinder lock)
23 ... Thumb turn base
31 ... Sam turn core
33 ... tooth part of predetermined length in the circumferential direction
37 ... Signal gear
51. Core rotation position mark
57 ... Gear rotation position mark (left hand gear mark)
59 ... Gear rotation position mark (right hand gear mark)
69 ... Left and right hand mark for core (right mark)
71 ... Left and right hand marker for core (left marker)
73 ... Left and right hand mark for gear (notch)
75 ... Window
81. Mark for visual recognition
A ... Lock box
C ... Security Sam Turn

Claims (3)

It is a crime prevention thumb turn that is attached to the door where the locking bolt in the lock box moves forward and backward by the locking and unlocking operation of the cylinder lock from the outside, and the thumb turn knob that allows the locking bolt to move forward and backward is idled or removable. There,
A thumb turn base which is attached to the indoor surface of the door and holds the thumb turn;
A thumb-turn core comprising a segment gear provided detachably on the thumb-turn base and transmitting a rotational operation force of the thumb-turn to the lock box , and having tooth portions that are in the circumferential range of operation ;
A marking gear provided detachably on the thumb turn base and interlocking with the thumb turn core;
A core rotation position mark provided on the thumb turn core;
Left and right hand markers for the core that are provided on the thumb turn base and indicate a selective rotation position of the core rotation position marker;
A gear rotation position mark provided on the marking gear;
A left and right hand mark for gears that is provided on the thumb turn base and indicates a selective rotation position of the gear rotation position mark;
A window provided on the thumb turn base;
A visual mark provided on the marking gear and performing a different marking on the window portion for each predetermined rotation angle;
Equipped with a,
With respect to the thumb turn base, by setting the core rotation position mark to the right mark or the left mark of the left and right hand mark for the core, and mounting the thumb turn core, one of the left and right hands of the thumb turn core is set. The security thumb turn characterized in that the sign corresponding to the left or right hand is switched by mounting the marking gear in accordance with the setting and the left-hand gear mark or the right-hand gear mark of the gear rotation position mark. . A security thumb turn according to claim 1,
The thumb turn is a cylinder lock provided on the indoor side,
A security thumb turn in which the knob is a key of the indoor cylinder lock. A security thumb turn according to claim 2,
The crime prevention thumb turn characterized in that the key for the indoor side cylinder lock and the key for the outdoor side cylinder lock are the same.

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