JP2003138795A - Thumb turn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the illicit unlocking preventive function of a locking device by obtaining a thumb turn capable of preventing an illicit unlocking action such as insertion from the outdoor side. SOLUTION: This thumb turn 3 is provided with a thumb turn shaft 5 for inputting rotary operation force to a lock box mechanism part, a knob 31 relatively rotatable with the thumb turn shaft 5 by penetrating an end part of the thumb turn shaft 5, and freely slidable in the shaft direction to the thumb turn shaft 5, an external teeth ring 39 fixed to the axial directional almost center of the thumb turn shaft 5, a separating spring 35 interposed between the external teeth ring 39 and the knob 31, and energizing the knob 31 in the separating direction from the external teeth ring 39, an internal teeth part 51 formed in a through-hole of the knob 31, and immobilizing relative rotation of the knob 31 and the thumb turn shaft 5 by meshing with the external teeth ring 39 by shaft directional sliding of the knob 31, and an idly rotating ring 41 for covering the thumb turn shaft 5 by being out-fitted to the thumb turn shaft 5 between the knob 31 and a door 1, and relatively freely rotatable to the thumb turn shaft 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention inputs an operating force by rotation to a lock box mechanism portion built in an opening and closing body such as a door, and advances and retracts a lock member provided in the lock box with respect to the opening and closing body frame. Regarding thumb turn to operate.

[0002]

2. Description of the Related Art Conventionally, a locking device with a thumb turn has a lock box built in an opening / closing body such as a door. The lock box has a cylinder lock exposed on the outdoor side of the opening / closing body and an indoor side of the opening / closing body. A rotary thumb turn is provided.

A lock bolt, for example, a dead bolt is provided in the lock box so as to be movable back and forth from an end surface (tree end) of the opening / closing body. In this type of locking device, a dead key is inserted into the keyhole of the cylinder lock exposed to the outside and rotated to move the dead bolt forward and backward through the mouth of the opening and closing body, opening and closing the body side opening and closing body. The strike and the unlock provided on the opening frame that is the frame is locked and unlocked.
Further, from the indoor side, the dead bolt is advanced and retracted only by rotating the thumb turn knob, so that the opening / closing body can be locked and unlocked easily.

[0004]

In recent years, a high-class feeling and grace have been provided to the opening and closing bodies such as entrance doors of condominiums and houses, or the wall portion around the opening frame near the opening and closing bodies such as entrance doors. For the purpose of increasing the height, a glass window fitted with a small window has been widely used. However, in such a small window of the opening and closing body or a small window of the wall part, when the glass plate is broken, an outside hand is inserted to operate the thumb turn illegally, or a wire whose tip is bent like a hook is used. There is a risk that the thumb turn may be manipulated by inserting it.

Generally, a rotary thumb turn, which is often used for doors, is unlocked illegally by hooking a hook-like tip of a wire on a blade portion of a knob exposed on the indoor side and applying a rotational moment. Operation may be possible.

[0006] Even in the opening / closing body without the small window described above, the thumb turn may be similarly unlocked if the opening / closing body itself or the wall portion has a gap or hole for inserting the wire. It was

The present invention has been made in view of the above circumstances, and provides a thumb turn capable of preventing an unauthorized unlocking action such as insertion from the outside, and improves the unauthorized unlocking prevention function of the locking device. The purpose is to plan.

[0008]

[Means for Solving the Problems] Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. Thumb turn 3 according to claim 1 of the present invention
Is a thumb turn shaft 5 for inputting rotational operation force to the lock box mechanism section.
And a knob 3 which penetrates through the end of the thumb turn shaft 5 on the side opposite to the lock box mechanism portion to be rotatable relative to the thumb turn shaft 5 and which is slidable in the axial direction with respect to the thumb turn shaft 5.
1, an outer tooth ring 39 fixed to the thumb turn shaft 5 at a substantially axial center thereof, and an outer tooth ring 39 interposed between the outer tooth ring 39 and the knob 31 to attach the knob 31 in a direction away from the outer tooth ring 39. The biasing spring 35 and the through hole 33 of the knob 31 meshes with the external tooth ring 39 by sliding the knob 31 in the axial direction so that the knob 31 and the thumb turn shaft 5 cannot rotate relative to each other. An internal tooth portion 51, and an idle ring 41 which is externally inserted on the thumb turn shaft 5 between the knob 31 and the door 1 to cover the thumb turn shaft 5 and which is rotatable relative to the thumb turn shaft 5. It is characterized by having.

In the thumb turn 3, in order to transmit the operating force of the knob 31 to the thumb turn shaft 5, the knob 31 is pushed in the axial direction, and the inner tooth portion 51 of the knob 31 is fixed to the thumb turn shaft 5 by the outer tooth ring 39. Need to mesh with. Normally, the outer tooth ring 39 and the knob 31 are separated from each other by the separation spring 35, so that the knob 31 idles and the operating force of the knob 31 is not transmitted to the lock box mechanism portion. Therefore, even if an attempt is made to illegally operate the thumb turn 3 by breaking a small window provided on the door 1 or the like and inserting a hand from the outside or inserting a wire from a gap between the door 1 and the door frame, the knob 31 will idle. It is impossible to unlock the lock box mechanism by inputting the operating force. Further, since the thumb-turn shaft 5 between the knob 31 and the door 1 is covered with the thumb-turn shaft 5 and the idle ring 41 rotatable relative to the thumb-turn shaft 5 is externally attached, the thumb-turn shaft 5 can be directly rotated. Movement is also impossible.

The thumb turn 3 of claim 2 is the same as that of claim 1.
In the described thumb turn, the surface 31e of the knob 31
The thumb turn shaft rotation position indicating means 63 is provided on the end face 61 of the thumb turn shaft 5 which is shown in FIG.

In the thumb turn 3, by visually observing the thumb turn shaft rotation position display means 63, it can be seen from the surface 31e side of the knob 31 whether the thumb turn shaft 5 is in the locked position or the unlocked position. Therefore, the locking / unlocking state is not unknown, and the locking / unlocking operation can be immediately executed, and the operability of locking / unlocking can be secured.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a thumb turn according to the present invention will be described in detail below with reference to the drawings. 1 is a cross-sectional view showing an embodiment of a thumb turn according to the present invention, FIG. 2 is an exploded perspective view of the thumb turn shown in FIG. 1, and FIG.
FIG. 3 is an operation explanatory diagram showing a state in which the thumb-turn knob shown in FIG. 1 is pushed in.

The door 1 is provided with a lock box (not shown), and the lock box internally has a latch bolt, a dead bolt, and a lock box mechanism portion for moving these back and forth from the mouth of the door 1. The door 1 is provided with a thumb turn 3 on the surface of the indoor side 1a. The dead bolt of the lock box described above can be moved forward and backward from the door opening by using a cylinder lock (not shown) provided on the surface of the door 1 on the outdoor side with a key or by rotating the thumb turn 3.

The thumb turn 3 has a thumb turn shaft 5 for inputting a turning operation force to the lock box mechanism portion. The thumb turn shaft 5 passes through a support cylinder 7 that fixes the base end (the left end in FIG. 1) to the lock box. As will be described later, the thumb turn shaft 5 is rotatable so that its withdrawal from the support cylinder 7 is restricted by, for example, an E-ring (not shown) that contacts the support cylinder 7.

The base end of the thumb-turn shaft 5 serves as an input portion 9 having a cross-shaped cross section, for example, and is fitted into the input shaft of a lock box mechanism (not shown) so as not to rotate relative to it. Thumb turn axis 5
Is divided into, for example, a base end portion 11 forming the input portion 9 and a front end portion 13 extending indoors from the base end portion 11. The base end portion 11 and the front end portion 13 are connected to each other. It may be configured such that the parts 15 are connected so as not to rotate relative to each other.

The support cylinder 7 is formed in a substantially cylindrical shape, and has a rear end portion 7a having a pair of convex portions 8 in the direction orthogonal to the axis above and below the outer periphery, and fixing holes 10 are formed in the convex portions 8. ing. The support cylinder 7 has a rear end portion 7a inserted into an insertion hole 2 formed in the door surface 1a, and a lock box (not shown) provided in the door 1 has the fixing hole 1a.
Fixed through 0. As a result, the support cylinder 7 is fixed to the lock box in a non-rotatable manner, and the indoor surface 1 of the door 1 is inserted through the lock box.
It will be fixed to the a side.

The support cylinder 7 projects approximately half from the indoor side surface of the door 1. A decorative plate 17 is fitted on the protruding end surface of the support cylinder 7. Further, on the outer circumference of the support cylinder 7 protruding from the door 1, a substantially conical cylindrical decorative ring 19 having an open end and having the opening aligned with the front end surface of the support cylinder 7 is fitted.

As shown in FIG. 2, the tip portion 13 of the thumb-turn shaft 5 extends from the base end side toward the tip end side of the connecting portion 15, the circumferential groove 21, the relative rotation restricting portion 23, the base shaft portion 25, and the flange 2.
7 are sequentially provided. The connecting portion 15 has a means for fitting the connecting end provided on the base end portion 11 of the thumb turn shaft 5, for example, a fitting hole or the like on the end surface. The circumferential groove 21 is a groove whose outer periphery is cut off so that the outer diameter is smaller than that of the connecting portion 15 and the relative rotation regulating portion 23 which are adjacent to each other on both sides. Connecting part 15 to base part 1
The tip portion 13 connected to 1 is fitted with a retaining means such as an E ring (not shown) in the circumferential groove 21, or a retaining means such as a stopper pin fitted in the radial direction of the support cylinder 7 is fitted in the circumferential groove 21. By engaging, the removal from the support cylinder 7 is regulated.

A pair of projections 29, 29 extending in the axial direction are formed on the outer periphery of the relative rotation restricting portion 23 symmetrically with respect to the central axis. The projection 29 restricts a spacer ring 43 and an external tooth ring 39, which will be described later, to be externally inserted on the outer circumference of the tip portion 13 from rotating. The base shaft portion 25 penetrates a through hole 33 of the knob 31 described later. Further, the flange 27 regulates the removal of the knob from the tip of the thumb turn shaft 5.

As shown in FIG. 2, the knob 31 has a through hole 33 formed at the center thereof. The through hole 33 includes the idling ring housing portion 33a, the spacing spring housing portion 33b, and the bearing portion 33.
c, a flange accommodating portion 33d. The knob 31 is formed from the through hole 33 on the front surface 31e side to the tip portion 13 of the thumb turn shaft 5.
By inserting, the bearing portion 33c comes into contact with the flange 27 and does not fall off the tip portion 13. The flange 27 abuts the bearing portion 33c and is accommodated in the flange accommodating portion 33d of the knob 31, and the end surface thereof is substantially flush with the surface 31e of the knob 31. In this state, the knob 31 is located coaxially with the thumb turn shaft 5 and can rotate relative to the thumb turn shaft 5.

The spacing spring 35, the fixing ring 37, the external tooth ring 39, the idling ring 41, and the spacer ring 43 are sequentially mounted on the tip portion 13 penetrating the knob 31 from the connecting portion 15 side. The spacer ring 43 has a recess 45 on the inner circumference thereof, and as shown in FIG.
9 is engaged with the thumb turn shaft 5 so that it cannot rotate relative to the thumb turn shaft 5. The idle ring 4 is provided on the outer circumference of the spacer ring 43.
1 is loosely fitted, and the idle ring 41 idles with respect to the spacer ring 43, that is, the thumb turn shaft 5.

Further, the outer tooth ring 39 also has a recess 47 on the inner circumference, and by engaging this recess 47 with the projection 29, it becomes impossible to rotate relative to the thumb turn shaft 5. This external tooth ring 39
Is a spacer ring 43 on the outer periphery of the relative rotation restricting portion 23.
And the fixing ring 37 engaged with the base shaft portion 25 restricts the movement in the axial direction and is fitted to the thumb turn shaft 5. The fixing ring 37 may be, for example, an E ring that engages with a peripheral groove (not shown) formed in the base shaft portion 25.

The spacing spring 35 has one end in contact with the fixed ring 37 and the other end in contact with the bearing portion 33c, so that the knob 31 is
It is biased in a direction away from the outer tooth ring 39 (rightward in FIG. 1). The knob 31 has an internal tooth portion 51 on the inner side of the idling ring housing portion 33a. The inner tooth portion 51 has an inner gear shape in which a plurality of tooth portions are provided in the circumferential direction in the same number as the outer tooth ring 39. The internal tooth portion 51 may be a so-called spline. The inner tooth portion 51 meshes with the outer tooth ring 39 and the respective tooth portions, so that relative rotation is disabled.

The inner tooth portion 51 is spaced apart from the outer tooth ring 39 with a predetermined distance by urging the knob 31 by the spacing spring 35. The knob 31 corresponds to this distance, as shown in FIG.
As shown in FIG.
It is housed in a, and the thumb turn shaft 5 is resisted against the spacing spring 35.
It is possible to move in the axial direction.

In the present embodiment, the knob 31 is shown in FIG.
As shown in, it has a substantially conical shape composed of curved surfaces. By making the knob 31 into such a conical shape,
Even if the wire with the hook 31 on the outer peripheral surface is not hooked in the direction of rotation and the tip is bent like a hook,
It is impossible to rotate the knob 31 by hooking the hook-shaped portion on the outer peripheral surface of 1.

On the end face 61 (see FIG. 2) of the thumb turn shaft 5 exposed on the surface 31e of the knob 31, thumb turn shaft rotational position indicating means 63 is provided. The thumb-turn axis rotational position indicating means 63 can be an indicating means such as marking by minute unevenness, printing or engraving, or color classification by partial coloring. That is, it is only necessary that the wire or the like whose tip is bent in a hook shape can be prevented from being caught and the rotational position can be recognized.

By providing such thumb-turn shaft rotation position display means 63, it becomes possible to visually recognize from the front surface side of the knob 31 whether the present thumb-turn shaft 5 is in the locked position or the unlocked position. Therefore, the useless operation of turning the knob 31 to the locking side or the unlocking side to confirm the locked / unlocked state is unnecessary, and the locking / unlocking operation can be immediately executed, so that the operability of locking / unlocking is improved. .

Next, the operation of the thumb turn 3 having such a structure will be described. In the thumb turn 3, normally, as shown in FIG. 1, the outer tooth ring 39 and the inner tooth portion 51 are separated from each other by the biasing force of the spacing spring 35. Therefore, pick 3
Even if 1 is rotated, only the knob 31 idles, and the operation turning power of the knob 31 is not transmitted to the thumb turn shaft 5.

On the other hand, in order to input the operating force to the lock box mechanism, as shown in FIG. 3, the knob 31 is pushed toward the door surface. Then, the internal tooth portion 51 of the knob 31 meshes with the external tooth ring 39 fixed to the thumb turn shaft 5. When the knob 31 is rotated in this state, the rotation of the knob 31 is transmitted to the thumb turn shaft 5 via the inner tooth portion 51 and the outer tooth ring 39, and the operating force can be input to the lock box mechanism portion.

Therefore, in this thumb turn 3, in order to transmit the operating force of the knob 31 to the thumb turn shaft 5, the knob 3
It is necessary to push 1 toward the door 1 in the axial direction so that the inner tooth portion 51 and the outer tooth ring 39 mesh with each other. Normally, since the inner tooth portion 51 and the outer tooth ring 39 are separated from each other by the spacing spring 35, the knob 31 idles, and the operating force of the knob 31 is not transmitted to the lock box mechanism section. Therefore, even if the small window provided in the door 1 or the like is inserted and the thumb turn 3 is illegally operated, the knob 31 must be pushed in the direction of the door 1 to be rotated, which is easy. It becomes impossible to perform various operations, and the operating force cannot be input to the lock box mechanism to unlock it, and the small window provided on the door 1 etc. is broken or the gap between the door 1 and the door frame. Even if an attempt is made to illegally operate the thumb turn 3 by inserting a wire from the above, the tip of the wire cannot slide and lock on the surface of the knob 31, and the knob 31 only idles, and the operating force is a lock box mechanism. Unable to unlock by entering into the department.

The thumb-turn shaft 5 between the knob 31 and the door 1 covers the thumb-turn shaft 5 and the thumb-turn shaft 5 is covered.
Since the idling ring 41 which is relatively rotatable with respect to the outer side is externally inserted, the wire cannot be locked, and the direct rotation of the thumb turn shaft 5 can also be disabled.

[0032]

As described above, according to the thumb turn according to the present invention, the outer tooth ring is fixed to the thumb turn shaft,
Since the internal teeth are formed on the knob that can rotate relative to the thumb turn shaft and can move closer to and away from the axial direction, in order to transmit the operating force of the knob to the thumb turn shaft, push the knob to push the internal tooth ring and the internal tooth ring. Since it has to mesh with the teeth, even if you try to operate the thumb turn illegally by inserting a small window provided on the door etc., you must rotate the knob while pushing the knob. It becomes impossible to perform such an operation, and the operation force cannot be input to the lock box mechanism to unlock the door, and the small window provided on the door or the like is broken, or the door and the door frame. Even if an attempt is made to illegally operate the thumb turn by inserting a wire through the gap, the knob will only idle and the operating force cannot be input to the lock box mechanism to unlock.

Further, since the thumb-turn shaft between the knob and the door is fitted with the idling ring which covers the thumb-turn shaft and is rotatable relative to the thumb-turn shaft, the thumb-turn shaft cannot be directly rotated.

Thus, it is possible to surely prevent the illegal unlocking of rotating the thumb turn by inserting the hand or hooking the wire on the knob, and improve the unauthorized unlocking prevention function of the locking device. .

According to the thumb turn according to the present invention,
Since the thumb turn shaft rotation position indicating means is provided on the end face of the thumb turn shaft exposed on the surface of the knob, the thumb turn shaft is in the locked position or the unlocked position by visually observing the thumb turn shaft rotation position display means. You will be able to see it from the front side of the pick. Therefore, it is possible to immediately perform the locking or unlocking operation without the unlocking state becoming unknown, and it is possible to secure the operability of locking and unlocking.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a thumb turn according to the present invention.

2 is an exploded perspective view of the thumb turn shown in FIG. 1. FIG.

FIG. 3 is an operation explanatory view showing a state in which the thumb turn knob shown in FIG. 1 is pushed in.

[Explanation of symbols]

1 ... Door 3 ... Samturn 5 ... thumb turn axis 31 ... picking 33 ... Through hole 35 ... Spacing spring 39 ... External tooth ring 41 ... idle ring 51 ... Internal teeth 61 ... End face 63 ... Thumb turn shaft rotation position indicating means

Claims (2)

[Claims] 1. A thumb turn shaft for inputting a rotational operation force to a lock box mechanism portion, and an end portion of the thumb turn shaft on the opposite side of the lock box mechanism portion are penetrated to enable relative rotation with the thumb turn shaft. A knob slidable in the axial direction with respect to the thumb turn shaft, an outer tooth ring fixed to the thumb turn shaft at substantially the center in the axial direction, and the outer tooth ring interposed between the outer tooth ring and the knob. And a separation spring for urging the knob in a direction away from the knob, and the knob is formed in a through hole of the knob and meshes with the external tooth ring by axial sliding of the knob to disable relative rotation between the knob and the thumb turn shaft. A thumb turn, comprising: an inner tooth portion; and an idle ring that is externally inserted on the thumb turn shaft between the knob and the door to cover the thumb turn shaft and be rotatable relative to the thumb turn shaft. 2. The thumb turn according to claim 1, wherein an end face of the thumb turn shaft exposed on the surface of the knob is provided.
A thumb turn shaft turning position indicating means is provided.