JP4607625B2 - Security thumb turn - Google Patents

Description

  The present invention relates to a security thumb turn.

  Conventionally, a locking device with a thumb turn has a built-in lock box in an opening / closing body such as a door, and the lock box has a cylinder lock exposed on the outdoor side of the opening / closing body and a rotary thumb turn exposed on the indoor side of the opening / closing body. And are provided.

The lock box is provided with, for example, a dead bolt, which is a lock member, so as to be able to advance and retreat from the end face (the end) of the opening / closing body.
In this type of locking device, the deadbolt is advanced and retracted from the top of the opening / closing body by inserting a key into the keyhole of the cylinder lock exposed to the outdoor side and rotating it. Locking / unlocking is performed on a strike provided in an opening frame body which is a frame.

Further, from the indoor side, the dead bolt is advanced and retracted simply by rotating the blade-shaped thumb turn as shown in the following Patent Document 1, and the opening and closing body can be easily locked and unlocked. Yes.
Japanese Patent Publication No. 2-157715 (Fig. 1b, Fig. 1c)

In recent years, glass plates have been fitted into the opening and closing bodies of condominiums and houses, or the walls around the opening frame in the vicinity of these doors and the like for the purpose of enhancing luxury and grace. Things with small windows are increasingly used.
However, in such small windows of the opening and closing body and small windows of the wall part, when the glass plate is broken, from outside the hand is inserted, the thumb turn is manipulated illegally, or the wire whose tip is bent into a bowl shape etc. There is a risk that the thumbturn will be manipulated incorrectly.

  In general, the rotary thumb turn often used for doors can be used for illegal unlocking operations by hooking the hooked tip of the wire to the blade plate of the knob exposed on the indoor side and giving a rotational moment. It may be possible.

  Further, even in an opening / closing body without a small window, there is a possibility that the thumb turn may be illegally unlocked if there is a gap or a hole for inserting a wire in the opening / closing body or a wall portion.

  The present invention has been made in view of the above situation, and provides a crime prevention thumb turn that can prevent unauthorized unlocking by inserting a hand, a wire or the like from the outdoor side, and aims to improve the crime prevention performance of the thumb turn. To do.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The crime prevention thumb turn 100 according to claim 1 of the present invention includes a thumb turn shaft 11 for inputting a rotational operation force to the lock box mechanism,
A fixed cylinder 13 fixed to the indoor side surface of the door and rotatably supporting the thumb turn shaft 11;
A cylindrical decorative ring 15 protruding coaxially from the fixed cylinder 13 and being extrapolated;
A movable cylinder 17 which is rotatably provided in the decorative ring 15 and through which the thumb turn shaft 11 penetrates in a relatively rotatable manner;
The movable cylinder 17 is supported in a swingable manner inside the movable cylinder 17 via a support shaft 59 in the diametrical direction, so that the lower half 19A of the support shaft 59 is removed from the decorative ring 15 by the swing. A knob member 19 that can protrude in the direction toward the top and that the upper half of the support shaft 59 falls into the movable cylinder 17;
Between the knob member 19 and the thumb turn shaft 11, the movable cylinder 17 is provided so as not to rotate relative to the thumb turn shaft 11, and is disposed so as to be able to contact with and separate from the thumb turn shaft 11. A clutch piece 21 that moves closer to the thumb turn shaft 11 by pressing the upper half of the support shaft 59;
Engagement means (projections 33, engagement grooves 35) provided between the thumb turn shaft 11 and the clutch piece 21 and engaged with each other so as not to rotate relative to each other when the clutch piece 21 approaches the thumb turn shaft 11. When,
Comprising
In a normal state, the knob member 19 does not protrude on the same plane as the vertical opening surface of the decorative ring 15 and is housed in the movable cylinder 17, and the engagement means (the protrusion 33 and the engagement groove 35) are accommodated. By not engaging, the knob member 19 and the movable cylinder 17 are idle with respect to the thumb turn shaft 11,
By the pushing operation of the upper end side half of the knob member 19 from the support shaft 59, the knob member 19 swings and the lower end side half portion 19A centering on the support shaft 59 protrudes outward and forward. Since the upper half of the upper half falls into the movable cylinder 17, the upper end of the rotation presses the clutch piece 21 to move toward the thumb turn shaft 11, and the engagement means (the protrusion 33, the engagement groove 35). ), The thumb turn shaft 11 and the clutch piece 21 are connected to each other so that they cannot be rotated relative to each other, and a rotational operation force is input to the lock box mechanism portion at the protruding lower end half portion 19A of the knob member 19. It is characterized by becoming.

  In this security thumb turn 100, when the knob member 19 is pushed, it swings in the movable cylinder 17, and the half portion 19A protrudes from the movable cylinder 17 so as to be substantially parallel to the axial direction of the thumb turn shaft 11. Become. On the other hand, in the normal state, the knob member 19 is housed inside the movable cylinder 17 and is not protruded, and the pressing operation with the bar and the hooking operation with the wire become impossible from the beginning of the knob operation. In addition to this, if the half portion 19A of the knob member 19 is not projected, the engaging means (the protrusions 33, the engaging grooves 35) are not engaged, and the movable cylinder 17 is idled to the lock box mechanism. The input of the operating force becomes impossible.

The security thumb turn 100 according to claim 2 includes a magnetic body 75 attached to the back surface of the knob member 19;
A magnet 87 fixed to the movable cylinder 17 and attracted to the magnetic body 75 in a posture in which a half portion 19A of the knob member 19 protrudes outward from the decorative ring 15;
It is characterized by comprising.

  In the crime prevention thumb turn 100, when the half portion 19A of the knob member 19 is projected, the magnetic body 75 provided on the back surface of the knob member 19 is attracted and held by the magnet 87 fixed to the movable cylinder 17, and the knob member 19 is held in a protruding state.

The crime prevention thumb turn 100 according to claim 3 is a stopper step portion 51 that is formed in the movable cylinder 17 and regulates swinging in one direction of the knob member 19;
The movable cylinder 17 is slidable in the diameter direction of the movable member 17 and is provided on the knob member 19 so as to protrude from the knob member 19 by sliding to be locked to the movable cylinder 17 in the other direction of the knob member 19. A latch 63 for preventing swinging;
It is characterized by comprising.

  In this security thumb turn 100, the swinging of the knob member 19 in one direction is restricted by the stopper step 51 and the swing in the other direction is restricted by the latch 63 in a normal state where the knob member 19 does not protrude. Therefore, unless the latch 63 and the movable cylinder 17 are unlocked, the knob member 19 remains in the accommodated state and does not protrude.

  According to the crime prevention thumb turn of the first aspect of the present invention, when the knob member is operated, by pushing the knob member, the knob member swings in the movable cylinder and becomes substantially parallel to the axial direction of the thumb turn shaft. Half part protrudes from a movable cylinder, and operation becomes possible. On the other hand, in a normal state, the knob member is housed inside the movable cylinder so as not to protrude, so that a glass plate such as a small window is split and a hand is inserted from the outside, or a wire is inserted from the gap between the door and the door frame. However, the thumb turn cannot be unlocked illegally. In addition to this, a clutch piece that moves closer to the thumb turn shaft by the protruding movement of the knob member is provided in the movable cylinder, and an engaging means that engages by this approach movement is provided across the thumb turn shaft and the clutch piece. If the half of the member does not protrude, the engaging means will not engage, and the movable cylinder will be idled, making it impossible to input the operating force to the lock box mechanism. As a result, even in the accommodated state of the knob member, it is possible to disable the input of the operation force by the rotation of the knob member, and to further improve the crime prevention.

  According to the crime prevention thumb turn of claim 2, since the magnetic body is attached to the back surface of the knob member, and the magnet that is attracted to the magnetic body is fixed to the movable cylinder in a posture in which the half of the knob member protrudes, the knob member Can be held in the protruding state, and operability can be improved.

  According to the security thumb turn of the third aspect, the stopper step portion that restricts the swinging of the knob member in one direction is formed on the movable cylinder, and the latch that prevents the knob member from swinging in the other direction is slidably picked. Since it is provided on the member, the knob member cannot be protruded unless the latch is slid to release the latch and the movable cylinder, and the knob member cannot be easily protruded by pressing a bar or the like. Can increase the sex.

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 sectional view of a security thumb turn according to the present invention, FIG. 2 is a front view of the security thumb turn shown in FIG. 1, FIG. 3 is an exploded side view of the security thumb turn shown in FIG. 5 is an exploded perspective view of the thumb turn shaft and the clutch piece, and FIG. 6 is a perspective view of the clutch piece.
A door (not shown) is provided with a lock box. The lock box includes a latch bolt, a dead bolt, and a lock box mechanism for moving the door forward and backward from the mouth of the door. The door has a security thumb turn 100 on the indoor side. The above-described dead bolt of the lock box can be advanced and retracted from the door mouth by turning a cylinder lock provided on the outdoor surface of the door with a key or by turning the security thumb turn 100.

The security thumb turn 100 includes a thumb turn shaft 11, a fixed barrel 13, a decorative ring 15, a movable barrel 17, a knob member 19, and a clutch piece 21 as main members.
The thumb turn shaft 11 is rotatably supported via a bush 23 by a fixed cylinder 13 fixed to the indoor surface side of the door, preferably the lock box side surface. And the front-end | tip 11a arrange | positioned in a door is interlockedly connected with a lock box mechanism part, and rotational operation force is input into a lock box mechanism part. The thumb turn shaft 11 is not removable from the fixed cylinder 13 by providing a washer 25, a retaining ring 27, etc. in the circumferential groove 11b. For example, the tip 11a is formed with four convex portions 11c at equal intervals in the circumferential direction, so that relative rotation with the connecting portion 32 (see FIG. 1) of the lock box is restricted.

  A spring insertion hole 29 is formed in the axial direction on the base end surface of the thumb turn shaft 11, and the spring insertion hole 29 accommodates the clutch spring 31 in a protruding state. On the outer periphery of the base end portion of the thumb-turn shaft 11, four protrusions 33 which are engagement means are provided at equal intervals in the circumferential direction. The protrusions 33 are engagement means which will be described later for the clutch piece 21. Engage with the mating groove 35.

  In the fixed cylinder 13, a fixing hole 39 of a fixing portion 37 protruding from the base end portion is fixed to the side of the lock box. The fixed cylinder 13 rotatably supports the thumb turn shaft 11 by a small diameter hole portion 41 (see FIG. 1) formed therein.

  The decorative ring 15 is extrapolated to the distal end side of the fixed cylinder 13 and protrudes coaxially from the fixed cylinder 13. A ring spring 43 is mounted on the outer periphery of the distal end of the fixed cylinder 13, and one end of the ring spring 43 abuts on the flange portion 45 of the fixed cylinder 13, and the other end abuts on the flange portion 47 of the decorative ring 15. Thus, the rear surface 15 a of the decorative ring 15 is brought into contact with the door indoor surface by the urging force of the ring spring 43. In addition, in FIG. 1, the contact position of the decorative ring 15 when the thickness of the door is different is shown as a diagram when the upper half is thin and the lower half is thick. .

  The movable cylinder 17 is rotatably installed in the decorative ring 15. Further, the thumb turn shaft 11 has a through hole 49 through which the thumb turn shaft 11 can be relatively rotated. The distal end side of the movable cylinder 17 is opened, and a stopper step 51 is formed in the opening. The stopper step portion 51 is provided with an edge portion of the knob member 19 and a magnet holder 53 described later. A rotation restricting groove 55 is formed between the stopper step 51 of the movable cylinder 17 and the through hole 49, and the rotation restricting groove 55 is engaged with a rotation restricting protrusion 57 projecting from the outer periphery of the clutch piece 21 to engage the clutch. The rotation of the piece 21 is restricted. That is, the clutch piece 21 is movable in the axial direction while the relative rotation with the movable cylinder 17 is restricted.

  The knob member 19 is swingably supported inside the movable cylinder 17 via a pair of support shafts 59, 59 (see FIG. 2) in the diameter direction of the movable cylinder 17. As for the knob member 19, the half part 19A (refer FIG. 9) can protrude outward from the decorative ring 15 by rocking | fluctuation. That is, when the knob member 19 is rotated about the support shaft 59 and is positioned in the horizontal direction, the half of the knob member 19 protrudes outward from the decorative ring 15, and when the knob member 19 is positioned in the vertical direction, It is located in substantially the same plane as the opening surface and can be accommodated in the decorative ring 15.

  A receiving groove 61 in the diameter direction is formed on the back surface of the knob member 19, and a latch 63 is slidable in the diameter direction in the receiving groove 61. The latch 63 is provided with an operation projection 65 that is exposed to the indoor side from the window 67 of the knob member 19. Further, a latch spring 69 is disposed between the latch 63 and the knob member 19, and the latch spring 69 biases the latch 63 upward in FIG. The front end of the latch 63 in the urging direction is a locking claw 71, and the locking claw 71 is locked in a locking hole 73 formed in the movable cylinder 17. The latch 63 disposed in the receiving groove 61 is slidably held by fixing a mounting plate 75, which is a magnetic body, to the back surface of the knob member 19 with screws 77 (see FIG. 2).

  The clutch piece 21 is installed in the movable cylinder 17 so as not to be relatively rotatable between the knob member 19 and the thumb turn shaft 11. As shown in FIG. 6, a convex curved surface 79 is formed on the distal end surface of the clutch piece 21, and the convex curved surface 79 gradually protrudes from the peripheral edge of the distal end surface toward the center. An insertion groove 81 is formed in the distal end surface in the diametrical direction, and the engaging claw 71 of the latch 63 can enter the insertion groove 81. A notch 83 is formed at the lower end of the convex curved surface 79, and a shoulder 85 (see FIG. 2) of the latch 63 is detachably fitted into the notch 83.

  The clutch piece 21 is pressed by the outward projecting movement of the knob member 19 and moves closer to the thumb turn shaft 11. The clutch piece 21 and the thumb turn shaft 11 are formed with the protrusion 33 and the engaging groove 35 which are engaging means. The protrusion 33 and the engaging groove 35 mesh with each other so that the clutch piece 21 cannot be rotated relative to the thumb turn shaft 11 due to the approaching movement. That is, in the state where the knob member 19 protrudes, the thumb turn shaft 11 is rotated in conjunction with the movable cylinder 17 and the clutch piece 21 that are rotated by the rotation operation of the knob member 19.

  A stopper step 51 is formed in the movable cylinder 17, and the stopper step 51 restricts the swinging of the knob member 19 in one direction. In addition, the latch 63 provided on the knob member 19 protrudes from the knob member 19 by sliding, thereby being locked to the locking hole 73 of the movable cylinder 17 to prevent the knob member 19 from swinging in the other direction. . Therefore, in a normal state where the knob member 19 does not protrude, the swinging of the knob member 19 in one direction is restricted by the stopper step portion 51, and the swinging in the other direction is restricted by the latch 63. If the latch 63 and the movable cylinder 17 are not unlocked, the knob member 19 remains held and does not protrude. As a result, unless the latch 63 is slid to release the locking with the movable cylinder 17, the knob member 19 cannot be protruded, and an easy protrusion operation of the knob member 19 by pressing a bar or the like is prevented, thereby preventing crime. It can be enhanced.

  A magnet holder 53 formed in a substantially S shape with a sheet metal material or the like is fixed inside the movable cylinder 17. The magnet holder 53 accommodates the magnet 87. The magnet 87 is attracted to the mounting plate 75 in a posture in which the half portion 19 </ b> A of the knob member 19 protrudes outward from the decorative ring 15. As described above, the attachment plate 75 that is a magnetic body is attached to the back surface of the knob member 19, and the magnet 87 that is attracted to the attachment plate 75 is fixed to the movable cylinder 17 with the half portion 19 </ b> A of the knob member 19 protruding. Therefore, the knob member 19 can be held in the protruding state, and the operability can be improved.

Next, the usage method of this crime prevention thumb turn 100 is demonstrated.
FIG. 7 is an operation explanatory view showing a latch release state of the latch, FIG. 8 is an operation explanatory view showing a clutch piece pressing start state by the knob member, and FIG. 9 is an operation explanatory view showing an engagement state of the thumb turn shaft and the clutch piece. is there.
As shown in FIG. 1, the security thumb turn 100 normally has the lower end of the knob member 19 in contact with the stopper step 51, and the locking hole 71 of the latch 63 is locked to the locking hole 73 of the movable cylinder 17. However, it is in a housed state in the decorative ring 15. Therefore, in this state, the knob member 19 does not protrude in the same plane as the vertical opening surface of the decorative ring 15, and is in a state parallel to the door surface, and cannot be rotated.

  In this state, even if the knob member 19 is rotated, the engagement groove 35 of the clutch piece 21 and the protrusion 33 of the thumb-turn shaft 11 are not engaged with each other. It will only idle. The clutch piece 21 is moved rightward in FIG. 1 by the urging force of the clutch spring 31 and is separated from the thumb turn shaft 11.

  On the other hand, after the operating projection 65 of the latch 63 is slid downward in FIG. 7 to release the locking claw 71 and the locking hole 73 from being locked, the upper rotation end of the knob member 19 is set in the vertical direction. Is pushed in the direction of arrow a in FIG. 7, the knob member 19 rotates about the support shaft 59. In this rotation, as shown in FIG. 8, the rotation upper end of the knob member 19 falls into the movable cylinder 17, and the rotation lower end begins to protrude forward.

  At the same time, the latching claw 71 of the latch 63 enters the insertion groove 81 of the clutch piece 21, and the shoulder 85 of the latch 63 presses the convex curved surface 79 of the clutch piece 21. Move to the left. As shown in FIG. 9, when the knob member 19 is further swung, the substantially half portion 19A on the lower end side of the rotation is in a horizontally projecting state. The horizontal pick member 19 is held in position by attaching the mounting plate 75 on the back of the upper end of the rotation to the magnet 87.

  In the state where the knob member 19 protrudes from the movable cylinder 17 in this way, the clutch piece 21 completes moving to the left in FIG. 9 against the urging force of the clutch spring 31, thereby the engagement groove 35 and the protrusion. 33 meshes with each other, and the clutch piece 21 and the thumb turn shaft 11 are unable to rotate relative to each other and become connected. In this state, the half part 19A of the knob member 19 is picked with fingers, and the movable cylinder 17 is rotated. As a result, the turning operation force is input to the lock box mechanism through the knob member 19, the movable cylinder 17, the clutch piece 21, and the thumb turn shaft 11, and the dead bolt of the lock box moves forward and backward from the door mouth. Thus, the locking device can be locked and unlocked.

  The knob member 19 is preferably provided with markings such as “PUSH” and “push” on the surface of the upper end of the rotation. By providing such a mark, it is possible to visually recognize the pushing side in advance, and it is possible to eliminate a pressing mistake that pushes the opposite side (rotation lower end) and improve operability.

  Therefore, according to the security thumb turn 100, when the knob member 19 is operated, the knob member 19 is swung in the movable cylinder 17 by pushing the knob member 19, and becomes substantially parallel to the axial direction of the thumb turn shaft 11. Half part 19A protrudes from the movable cylinder 17, and operation becomes possible. On the other hand, in a normal state, the knob member 19 is housed inside the movable cylinder 17 so as not to protrude, so that a glass plate such as a small window is broken and a hand is inserted from the outside, or a wire is inserted from the gap between the door and the door frame. Even if inserted, the thumb turn cannot be unlocked illegally.

  In addition to this, a clutch piece 21 that moves closer to the thumb turn shaft 11 by the protruding movement of the knob member 19 is provided in the movable cylinder 17, and the protrusion 33 and the engagement groove 35 that are engaged by the moving movement are provided in the clutch with the thumb turn shaft 11. Since the half portion 19A of the knob member 19 is not projected, the protrusion 33 and the engagement groove 35 are not engaged, and the movable cylinder 17 is idled so that the lock cylinder mechanism portion can be moved to the lock box mechanism portion. Input of operating force can be disabled. As a result, even in the housed state of the knob member 19, the input of the operating force by the rotation of the knob member 19 is disabled, and the crime prevention property can be further improved.

It is sectional drawing of the crime prevention thumb turn which concerns on this invention. It is a front view of the security thumb turn shown in FIG. FIG. 2 is an exploded side view of the security thumb turn shown in FIG. 1. It is a perspective view of a thumb turn axis. It is a disassembled perspective view of a thumb turn axis | shaft and a clutch piece. It is a perspective view of a clutch piece. It is operation | movement explanatory drawing showing the latching release state of a latch. It is operation | movement explanatory drawing showing the clutch piece press start state by a knob. It is operation | movement explanatory drawing showing the engagement state of a thumb turn axis | shaft and a clutch piece.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Thumb turn shaft 13 ... Fixed cylinder 15 ... Cosmetic ring 17 ... Movable cylinder 19 ... Picking member 19A ... Half part 21 ... Clutch piece 33 ... Engagement means (projection)
35 ... engaging means (engagement groove)
51: Stopper step portion 59 ... Support shaft 63 ... Latch 75 ... Magnetic body (mounting plate)
87 ... Magnet

Claims (3)

A thumb turn shaft for inputting a rotational operation force to the lock box mechanism,
A fixed cylinder fixed to the indoor side surface of the door and rotatably supporting the thumb turn shaft;
A cylindrical decorative ring that protrudes coaxially from the fixed cylinder and is extrapolated;
A movable cylinder which is rotatably installed in the decorative ring and penetrates the thumb turn shaft so as to be relatively rotatable;
The movable cylinder is swingably supported inside the movable cylinder via a diametrical support shaft, and the swing enables the lower half of the support shaft to protrude outward from the decorative ring. In addition, a knob member whose upper half from the support shaft falls into the movable cylinder ,
該摘saw member and the are provided inside the non rotate relative to the movable cylinder between a thumb turn shaft Rutotomoni, separable be freely arranged with respect to the thumb-turn shaft, upper than the support shaft by swinging the gripping member A clutch piece that moves closer to the thumb turn shaft by pressing the half of
Engagement means provided across the thumb turn shaft and the clutch piece, and meshing with each other so as not to rotate relative to each other by the movement of the clutch piece toward the thumb turn shaft;
Comprising
In a normal state, the knob member does not protrude on the same plane as the vertical opening surface of the decorative ring and is housed in the movable cylinder, and the engaging member does not mesh with the knob member so that the knob member is not engaged. And the movable cylinder is idle,
By pushing the upper half of the knob member above the support shaft, the knob member swings so that the lower half of the knob centered on the support shaft protrudes outward and the upper half of the knob. Is tilted into the movable cylinder, and the upper end of the rotation presses the clutch piece to approach the thumb turn shaft, and the thumb turn shaft and the clutch piece cannot be relatively rotated via the engagement means. A crime prevention thumb turn characterized in that a rotational operation force is input to the lock box mechanism at the lower half of the protruding knob member in a state . A magnetic body attached to the back surface of the knob member;
A magnet fixed to the movable cylinder and adsorbed to the magnetic body in a posture in which a half of the knob member protrudes outward from the decorative ring;
The crime prevention thumb turn according to claim 1, further comprising: A stopper step that is formed on the movable cylinder and restricts swinging in one direction of the knob member;
The movable cylinder is slidable in the diametrical direction and is provided on the knob member so as to protrude from the knob member by sliding to be locked to the movable cylinder and prevent the knob member from swinging in the other direction. A latch,
The crime prevention thumb turn according to claim 1 or 2, further comprising:

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