JP2007198054A - Lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device which allows a thumb-turn shaft to fit in a top joint shaft only in a posture which enables a gripping part to be longitudinally long in an unlocked state and enables the gripping part to be horizontally long in a locked part. <P>SOLUTION: The thumb-turn shaft 61 is inserted into a fitting hole 57 which is rotatably provided in a lock box 21 mounted on a door and formed in an axial direction to be a door front rear direction at least from the door indoor side, and the top joint shaft 31 for moving a dead bolt 43 forward and backward from the lock box 21 through lock mechanism 23 by the rotation of the thumb-turn shaft 61 is provided in a lock device 100. The top joint shaft 31 is rotatable in a range of rotating angle which allows the dead bolt 43 to move forward in a range of 90°rotating angle on the one hand and allows the dead bolt 43 to move backward in the range of 90°rotating angle on the other hand. A fitting angle regulating means 63 which enables the thumb-turn shaft 61 to fit in the top joint shaft 31 at any one angle and this one angle + 180°is provided from the fitting hole 57 of the top joint shaft 31 to the thum-turn shaft 61. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a locking device having a Dharma shaft in which a thumb turn shaft is inserted and a dead bolt is advanced and retracted from a lock box through a lock mechanism by rotation of the thumb turn shaft.

  The lock device provided in the door has a built-in locking / unlocking mechanism for locking / unlocking the door by engaging / disengaging the dead bolt that is advanced / retracted from / from the lock box to / from the door frame. The locking device is locked and unlocked by inputting a locking / unlocking operation force by a cylinder lock from the outdoor side or a thumb-turning / unlocking operation force by a thumb turn from the indoor side. That is, the operation by the key lock of the cylinder lock is required from the outdoor side, while the lock operation can be easily performed by the rotation operation of only the knob without using the key lock from the indoor side.

  Incidentally, in the above-described locking device, a so-called dharma shaft 1 shown in FIG. 5 is rotatably provided in the lock box. A fitting hole 3 is formed in the dharma shaft 1 in the axis G direction which is the front and back direction of the door. The thumb turn shaft 7 of the thumb turn 5 shown in FIG. 6 is inserted into the fitting hole 3 at least from the door indoor side. The dharma shaft 1 serves as an input member for moving the dead bolt forward and backward from the lock box through a lock mechanism provided in the lock box by the rotation of the inserted thumb turn shaft 7.

A Dharma shaft 1 rotatably provided in the lock box has a thumb turn shaft 7 inserted into the fitting hole 3. In order to restrict relative rotation, the fitting hole 3 and the thumb turn shaft 7, for example, have a shape in which the fitting hole 3 is cut out with a pair of fan portions sandwiching the axis G of the cross hole as play portions 3a, so-called dharma shape. As shown in FIG. 7, the thumb turn shaft 7 is formed in a substantially cross-shaped cross section having two pairs of orthogonal projecting pieces 9, 9, 11, 11 projecting with a length d equal to the outside in the radial direction. Therefore, the thumb turn shaft 7 can be fitted to the dharma shaft 1 so as not to rotate relative to the rotation angle of 90 degrees.
From this, for example, when inserting the thumb turn shaft 7 later into the Dharma shaft 1 of the lock box attached to the door at the time of factory shipment, on-site installation, or maintenance, the rotation angle position of the Dharma shaft 1, that is, The thumb turn shaft 7 may be inserted regardless of whether the deadbolt is advanced or retracted. For example, the thumb-turn knob 13 (see FIG. 6), which is normally vertically long in the unlocked state, includes a problem that it is erroneously attached in a horizontally long posture in spite of the unlocked state.

  The present invention has been made in view of the above situation, and provides a locking device in which the thumb turn shaft is inserted into the Dharma shaft only in a posture in which the knob is vertically long in the unlocked state and the knob is horizontally long in the locked state. Therefore, it is intended to prevent erroneous mounting of the thumb turn shaft.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The lock device according to claim 1 of the present invention has a thumb turn at least from the indoor side of the door in the fitting hole 57 formed in the lock box 21 attached to the door so as to be rotatable and formed in the axial direction which is the front and back direction of the door. A locking device 100 having a Dharma shaft 31 in which a shaft 61 is inserted and the dead bolt 43 is advanced and retracted from the lock box 21 via the locking mechanism 23 by the rotation of the thumb turn shaft 61,
The dharma shaft 31 can be rotated in a rotation angle range in which the dead bolt 43 is advanced in one of the rotation angle ranges of 90 degrees and the dead bolt 43 is retracted in the other of the rotation angle ranges of 90 degrees.
The fitting angle restricting means 63 that enables the thumb turn shaft 61 to be fitted at an arbitrary angle with respect to the Dalma shaft 31 and the angle of the one angle + 180 degrees is provided with a fitting hole 57 of the Dalma shaft 31. It is provided over the thumb turn shaft 61.

  In this lock device, the fitting angle restricting means 63 specifies the fitting angle of the thumb turn shaft 61 with respect to the Dalma shaft 31 according to the rotation angle of the Dalma shaft 31, that is, the advanced state or the retracted state of the dead bolt 43. The Therefore, the thumb turn shaft 61 is prevented from fitting into the dharma shaft 31 regardless of the advance / retreat state of the dead bolt 43 as in the conventional lock device, and the thumb turn shaft 61 matches the advance / retreat state of the dead bolt 43. It can be attached with the posture.

The lock device according to claim 2 is provided with a knob 65 that is long in the direction orthogonal to the axis at one end of the thumb turn shaft 61.
The fitting angle restricting means 63 inserts the thumb turn shaft 61 into the fitting hole 57 of the Dalma shaft 31 in a state where the dead bolt 43 is protruded, with the knob portion 65 oriented in the horizontal direction as the longitudinal direction. It is possible to insert.

  In this locking device, the relationship between the normal deadbolt advancement / retraction state and the posture of the thumb turn knob 65, that is, the thumb turn 65 is inserted into the dharma shaft 31 in a posture in which the knob 65 is vertically long when unlocked and horizontally long when locked. Will come to do.

  In the lock device according to claim 3, a pair of play portions 67 that allow the tail piece of the cylinder lock to be relatively rotated within a rotation angle range of 90 degrees are formed in the fitting hole 57 of the Dharma shaft 61 so as to be symmetrical about the axis. It is characterized by that.

  In this locking device, the Dharma shaft 31 can be used as a common fitting member for fitting the thumb turn shaft 61 and fitting the cylinder lock tail piece.

According to a fourth aspect of the present invention, the thumb turn shaft 61 is formed in a substantially cross-shaped cross section having two pairs of orthogonal projecting pieces 69, 69, 71, 71, and one pair of projecting pieces 69, 69. Is formed long outward in the radial direction,
A pair of cutout portions 73 and 73 into which the one pair of projecting pieces 69 and 69 are fitted are formed symmetrically on one end side of the pair of play portions 67 and 67 in the fitting hole 57. Features.

  In this locking device, the thumb turn shaft 61 can be fitted to the Dharma shaft 31 which is a common fitting member of the thumb turn shaft 61 and the cylinder lock tail piece in the position of the knob corresponding to the advance and retreat of the dead bolt 43. Become.

  According to the locking device of the first aspect of the present invention, the fitting angle restricting means for enabling fitting of the thumb turn shaft at one angle with respect to the Dalma shaft and the angle of this one angle + 180 degrees is provided with the Dalma shaft. Therefore, the rotation angle of the Dalma shaft, that is, the fitting angle of the thumb turn shaft with respect to the Dalma shaft can be specified according to the advanced state or the retracted state of the dead bolt. . Therefore, it is possible to prevent the thumb turn shaft from being fitted to the dharma shaft regardless of the advance / retreat state of the dead bolt, and the thumb turn shaft can be attached in a posture that matches the advance / retreat state of the dead bolt. As a result, it is possible to eliminate erroneous attachment of the thumb turn shaft to the dharma shaft.

  According to the lock device of claim 2, the thumb turn shaft can be inserted into the fitting hole of the Dalma shaft in a state in which the dead bolt is protruded, with the horizontal direction as the longitudinal direction. The thumb-turn shaft can be fitted into the Dharma shaft in a relationship between the deadbolt advance / retreat state and the thumb-turn knob position, that is, the knob part is vertically long when unlocked and horizontally long when locked.

  According to the lock device of claim 3, since the pair of play portions that allow the tail piece of the cylinder lock to relatively rotate within the rotation angle range of 90 degrees are formed in the fitting hole of the Dalma shaft, the axis is symmetrical. The dharma shaft can be used as a common fitting member for fitting the thumb-turn shaft and fitting the cylinder lock tailpiece.

  According to the lock device of the fourth aspect, since the pair of notches into which the one pair of projecting pieces are fitted is formed on one end side of the pair of play portions in the fitting hole, the thumb turn shaft and the cylinder lock tail The thumb turn shaft can be fitted to the Dharma shaft, which is a common fitting member with the piece, in the position of the knob corresponding to the advance and retreat of the dead bolt.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a locking device according to the invention will be described in detail with reference to the drawings.
1 is a side view of the locking device according to the present invention, FIG. 2 is a perspective view of the Dharma shaft shown in FIG. 1, FIG. 3 is a perspective view of a thumb turn attached to the locking device shown in FIG. FIG. 4 is a perspective view of only the thumb turn shaft shown in FIG.
The lock device 100 houses a lock mechanism 23 in a lock box 21. A box portion 21a of a flat rectangular lock that can be accommodated in a door (not shown), and a lid (not shown) fixed to the opening on one side surface (the paper surface side in FIG. 1) of the box portion 21a by screws. Consists of. A mounting plate 25 is provided on the front end surface of the lock box 21, and the mounting plate 25 is fixed to a door mouth (not shown) by a fixing screw 27. On the surface of the mounting plate 25, a front panel 29 that is exposed to the end is fixed by a decorative screw 30. As a result, the lock box 21 is covered by the front panel 29 at the door end, and the dead bolt 43 is advanced and retracted from the dead bolt entrance 29 a formed in the front panel 29.

  For example, a connecting portion (so-called tail piece) of a cylinder lock provided on the outdoor side of the door (the back side of the paper in FIG. 1) is engaged with one end of the Dharma shaft 31. In addition, a thumb turn, which will be described later, provided on the indoor surface side of the door (the paper surface side in FIG. 1) is inserted into the other end side of the Dharma shaft 31. The dharma shaft 31 is provided with a pressing bar 33 that protrudes radially outward, and the tip of the pressing bar 33 rotates around the tip of a swinging bar 37 that is rotatably supported by a support shaft (not shown) that is a support / fastening member. It is connected freely. Accordingly, the dharma shaft 31 is moved to one side of the 90 ° rotation angle range by the swinging spring 39 that is restricted to a rotation angle range of 90 °, for example, and is extrapolated to the swinging rod 37. Is urged to rotate.

  A guide shaft 41 as a support / fastening member is erected in the lock box 21, and the guide shaft 41 guides a long hole 43 a formed in the dead bolt 43. The dead bolt 43 protrudes out of the lock box 21 when the rear notch is pressed by the above-described pressing bar 33. The protruding dead bolt 43 is prevented from moving backward by a stopper 47, which is supported by a stopper shaft 45, which is a support / fastening member, so that the base end is swingably pivoted by the biasing force of the stopper spring 49. It has come to be.

  The dharma shaft 31 is rotated counterclockwise in FIG. 1 in a state where the dead bolt 43 is projected, thereby pressing the rear notch of the dead bolt 43 through the pusher 33 to retract the dead bolt 43. (Move to the right in FIG. 1). At this time, the release pin 51 simultaneously presses the stopper 47 to release the engagement state between the stopper 47 and the dead bolt 43.

  In the lock box 21, a partition plate 53 is erected along the outer periphery of a part of the dharma shaft 31. Further, a plurality of screw holes 55 for fixing the lid body are formed on the bottom surface of the lock box 21. A fixing screw (not shown) that is a support / fastening member that penetrates the lid body is screwed into the screw hole 55.

  As shown in FIG. 2, a fitting hole 57 is formed in the Dalma shaft 31 in the direction of the axis G that is the front and back direction of the door. The thumb turn shaft 61 of the thumb turn 59 shown in FIG. 3 is inserted into the fitting hole 57 from the door indoor side. The dharma shaft 31 moves the dead bolt 43 forward and backward from the lock box 21 via the lock mechanism 23 by the rotation of the thumb turn shaft 61. In the present embodiment, the dharma shaft 31 is rotatable in a rotation angle range in which the dead bolt 43 is advanced in one of the 90-degree rotation angle ranges and the dead bolt 43 is retracted in the other of the 90-degree rotation angle ranges. It has become.

  Here, the fitting hole 57 and the thumb turn shaft 61 of the dharma shaft 31 are provided with a fitting angle restricting means 63 over both. The fitting angle restricting means 63 allows the thumb turn shaft 61 to be fitted to the dharma shaft 31 at an arbitrary angle and an angle of this one angle + 180 degrees. In the present embodiment, an arbitrary angle refers to, for example, 0 degrees. Therefore, one angle + an angle of 180 degrees means an angle of 180 degrees.

  The fitting hole 57 is formed in a so-called dharma shape in which a pair of fan-shaped portions sandwiching the axis G of the substantially cross-shaped hole are cut as play portions 67 and 67. The play portion 67 allows a tailpiece (not shown) of the cylinder lock to be relatively rotatable within a rotation angle range of 90 degrees. By forming the pair of play portions 67 and 67 symmetrically with the axis G in the fitting hole 57 of the Dalma shaft 31, the Dalma shaft 31 is fitted with the thumb turn shaft 61 and the tail piece of the cylinder lock. It is used as a common fitting member for both.

  The thumb turn shaft 61 is formed in a substantially cross-shaped cross section having two pairs of orthogonal projecting pieces 69, 69, 71, 71. As shown in FIG. 4, the length D in the radial direction of one pair of projecting pieces 69, 69 is longer than the length d in the radial direction of the other pair of projecting pieces 71, 71. Further, on one end side of each of the pair of play portions 67 in the fitting hole 57, a pair of cutout portions 73, 73 shown in FIG. Has been.

  The protruding pieces 69 and 69 and the notches 73 and 73 constitute a fitting angle regulating means 63.

  At one end of the thumb turn shaft 61, a knob 65 that is long in the direction orthogonal to the axis G is provided. Further, in the present embodiment, the fitting angle restricting means 63 is inserted into the fitting hole 57 of the Dalma shaft 31 in a state in which the dead bolt 43 is projected, and the knob 65 is oriented so that the horizontal direction is the longitudinal direction. The shaft 61 can be inserted. That is, as shown in FIG. 3, the direction of the knob portion 65 in the longitudinal direction (up and down direction in the figure) and the direction of the extending direction of the protruding pieces 69 and 69 (up and down direction in the figure) coincide.

  In this locking device 100, the fitting angle regulating means 63 specifies the fitting angle of the thumb turn shaft 61 with respect to the Dalma shaft 31 according to the rotation angle of the Dalma shaft 31, that is, the advanced state or the retracted state of the dead bolt 43. Is done. Therefore, the thumb turn shaft 61 is prevented from fitting into the dharma shaft 31 regardless of the advance / retreat state of the dead bolt 43 as in the conventional lock device, and the thumb turn shaft 61 matches the advance / retreat state of the dead bolt 43. It can be attached with the posture.

  That is, the thumb turn shaft 61 can be inserted into the fitting hole 57 of the Dalma shaft 31 with the dead bolt 43 shown in FIG. . That is, since the fitting angle restricting means 63 allows the thumb turn shaft 61 to be fitted to the Dharma shaft 31 at angles of 0 degrees and 180 degrees, the knob portion 65 is oriented in the horizontal direction as the longitudinal direction. Only the thumb turn shaft 61 can be inserted. Accordingly, the thumb turn shaft 61 can be fitted into the Dharma shaft 31 with the relationship between the normal deadbolt advance / retreat state and the posture of the thumb turn knob 65, the knob 65 being vertically long when unlocked and horizontally long when locked. It is like that.

  Therefore, according to the lock device 100 described above, the fitting angle regulating means 63 (protruding piece) that enables the thumb turn shaft 61 to be fitted at an arbitrary angle with respect to the Dharma shaft 31 and at an angle of this one angle + 180 degrees. 69, 69, notches 73, 73) are provided across the fitting hole 57 of the Dalma shaft 31 and the thumb turn shaft 61. Therefore, the rotation angle of the Dalma shaft 31, that is, the advanced state of the dead bolt 43 or the reverse The fitting angle of the thumb turn shaft 61 with respect to the dharma shaft 31 can be specified according to the state.

  Therefore, regardless of the advancing / retreating state of the dead bolt 43, the thumb turn shaft 61 can be prevented from being fitted to the dharma shaft 31, and the thumb turn shaft 61 can be attached in a posture that matches the advancing / retreating state of the dead bolt 43. As a result, the erroneous attachment of the thumb turn shaft 61 to the dharma shaft 31 can be eliminated.

  In addition, since the pair of cutout portions 73 and 73 into which the pair of protruding pieces 69 and 69 are fitted are formed on one end side of the pair of play portions 67 in the fitting hole 57, the thumb turn shaft 61 and the cylinder lock tail are formed. The thumb turn shaft 61 can be fitted to the Dharma shaft 31 that is a common fitting member with the piece, in the position of the knob corresponding to the advance and retreat of the dead bolt 43. That is, the number of parts can be reduced by using the dharma shaft 31 as a common fitting member.

It is a side view of the locking device concerning the present invention. It is a perspective view of the Dharma shaft shown in FIG. It is a perspective view of the thumb turn attached to the locking device shown in FIG. FIG. 4 is a perspective view of only the thumb turn shaft shown in FIG. 3. It is a perspective view of the conventional dharma shaft. It is a perspective view of the conventional thumb turn. It is a perspective view of the conventional thumb turn shaft.

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 ... Lock box 23 ... Lock mechanism 31 ... Dalma shaft 43 ... Dead bolt 57 ... Fitting hole 61 ... Thumb turn shaft 63 ... Fitting angle control means 65 ... Knob part 67 ... Play part 69, 69, 71, 71 ... Projection piece 73, 73 ... Notch 100 ... Locking device G ... Axis

Claims (4)

A thumb-turn shaft is inserted from at least the door indoor side into a fitting hole formed in an axial direction which is provided in a lock box attached to the door so as to be rotatable and is in the direction of the front and back of the door. A locking device having a dharma shaft for moving a dead bolt forward and backward from the lock box through a mechanism,
The dharma shaft can be rotated in a rotation angle range in which the dead bolt is advanced in one of the rotation angle ranges of 90 degrees and the dead bolt is retracted in the other of the rotation angle ranges of 90 degrees.
A fitting angle restricting means that enables fitting of the thumb turn shaft at an arbitrary angle with respect to the dharma shaft and an angle of the single angle +180 degrees is provided between the fitting hole of the dharma shaft and the thumb turn shaft. A locking device characterized by being provided over the entire area. At one end of the thumb turn shaft, a long knob is provided in the direction perpendicular to the axis,
The fitting angle restricting means makes it possible to insert the thumb turn shaft into the fitting hole of the Dharma shaft in a state where the dead bolt protrudes, with the knob portion oriented in the horizontal direction as the longitudinal direction. The locking device according to claim 1, characterized in that:   3. The pair of play portions that allow the tail piece of the cylinder lock to be relatively rotated in a rotation angle range of 90 degrees are formed in the fitting hole of the Dalma shaft so as to be symmetrical with respect to the axis. Locking device. The thumb turn shaft is formed in a substantially cross-shaped cross section having two pairs of projecting pieces perpendicular to each other, and one pair of projecting pieces is formed long in the radial direction outside,
4. The locking device according to claim 3, wherein a pair of notches into which the one pair of projecting pieces are fitted are formed symmetrically on one end side of the pair of play portions in the fitting hole. .

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