JP2006249898A - Thumb-turn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thumb-turn which prevents thumb-turn turning and reliably gives recognition to the differentiation of a locking or unlocking state with a direction of the thumb-turn itself while a shifting operation between non-idle turning and idle turning states of the thumb-turn can be done only by putting and pushing the key into a key groove and furthermore a duplicated key K cannot be taken out improperly. <P>SOLUTION: An engaging recess part 51 is formed in a thumb-turn shaft 50 and an engaging part 23 in an inner cylinder 20. By putting the duplicated key K into the key groove 21 and pushing it toward the direction of the thumb-turn shaft 50, the engaging part 23 is interlocked with the engaging recess part 51 and thus the inner cylinder 20 is turned together with the thumb-turn shaft 50, so that a lock rod 3 pops in and out for unlocking/locking. When the inner cylinder is turned toward the locked direction in pushing the inner cylinder in and the duplicated key K is taken out from the key groove 21 of the inner cylinder 20, the engaging part 23 is released from the engaging recess part 51, so that the thumb-turn 10 is idly turned. Furthermore, unless a stopper button 90 is pushed in, the duplicated key K can not be taken out. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a thumb turn provided on the indoor side that can prevent unauthorized unlocking (so-called thumb turn), and more specifically, a cylinder lock (inner cylinder and outer cylinder) is attached to the thumb turn so that the thumb turn can be idled. And a thumb turn that prevents the key from being inadvertently removed.

   In recent years, door locks attached to doors have been used for unauthorized unlocking by inserting tools for unauthorized unlocking such as wires and strings into gaps between doors and frames (so-called dust) and holes in the doors. A so-called thumb turn is known in which the thumb turn knob attached to the room interior is rotated in the unlocking direction with the tool of the above, and the lock lock in the locked state is moved backward to unlock it.

  As a countermeasure for this, a thumb turn disclosed in Japanese Patent Application Laid-Open No. 2004-162299 (Patent Document 1) is known.

  The thumb turn of the above-mentioned patent document 1 includes a cylinder lock composed of an inner cylinder having a key groove, an outer cylinder fitted with the inner cylinder, a thumb turn accommodating the cylinder lock in an empty chamber, and rotation of the inner cylinder. A thumb turn shaft for transmitting the rotational force of the inner cylinder to the lock so as to lock or unlock by protruding or retracting the lock, and an inner cylinder of the cylinder lock between the thumb turn and the cylinder lock. A pin that is integrally rotated in the same direction by the rotation of the pin, a cam member that is in contact with the pin at one end surface and moved in the front-rear direction by the rotation of the pin, and a pin that is in contact with the cam member in the front-rear direction. A flat plate to be moved, and a portion of the flat plate is engaged with and disengaged from a thumb turn engaging portion and is fitted to rotate together with a thumb turn shaft for driving a lock. A clutch and a bullet that always urges the clutch forward and backward. Clutch mechanism is provided comprising a material.

  In the thumb turn of this Patent Document 1, in a non-idling state, the pin of the inner cylinder is located at the bottom of the cam member, the cam member is moving forward, and the clutch biased by the elastic member is the front The clutch engaging arm engages with the recess of the thumb turn. Therefore, by rotating the inner cylinder, the lock rod can be moved in and out through the thumb turn shaft to lock and unlock.

  In the non-idling state, the key is inserted into the key groove of the inner cylinder, rotated by a predetermined angle and pulled out, so that the pin provided on the inner cylinder slides on the cam surface of the cam member, Moved backwards. Along with this cam member, the clutch is also moved rearward against the biasing force of the elastic member, and the engagement between the clutch and the thumb turn is released. As a result, the thumb turn is idled, and even if the thumb turn is rotated, the thumb turn shaft cannot be operated without rotating the thumb turn shaft, and unauthorized operation from the outdoor side can be prevented.

  In other words, the thumb turn of Patent Document 1 can be changed between a non-idling state and an idling state by a clutch mechanism such as an inner cylinder pin, a cam member, a clutch, or an elastic member, as described above, by a key insertion / removal operation or a rotation operation. It is possible to prevent unauthorized unlocking, such as turning the thumb turn from the outside in the idling state.

   Further, the discrimination of switching between the non-idling state and the idling state of the thumb turn is recognized when the keyway of the inner cylinder is in the non-idling state if it is vertical and in the idling state if it is horizontal.

JP 2004-162299 A

  However, in the thumb turn of Patent Document 1, the clutch mechanism for switching the thumb turn between the non-slipping state and the idling state has a large number of components such as the pin, cam member, clutch, and elastic member provided on the inner cylinder as described above. In addition to the reduction in the number of parts, the structure of each part is complicated, the assembly time is increased, and the manufacturing cost is increased. In addition, the discriminating between the non-idle state and the idling state is recognized by the direction of the keyway of the inner cylinder. The inner cylinder is small and the keyway is also small. It ’s hard to break. Furthermore, in the non-idling state, even if the locked state in which the lock lever is operated by operating the thumb turn or the unlocked state in which the lock rod is retracted, the direction of the keyway is the same direction (vertical direction). There is a problem that the locked or unlocked state cannot be determined.

  The present invention has been devised in order to solve the problems as described in the above-mentioned Patent Document 1. In order to effectively prevent the so-called thumb turn, the thumb turn is switched between a non-slipping state and an idling state. Simplify the configuration, achieve a further reduction in the number of parts, reduce assembly time, reduce manufacturing costs, and reliably recognize the locked or unlocked state depending on the direction of the thumb turn itself. In addition, it is only necessary to insert the key into the keyway of the inner cylinder and press it to switch the thumb turn between the non-slipping state and the idling state, and to provide a thumb turn that can prevent accidental removal of the key. Main purpose.

  In order to achieve the above object, a thumb turn according to claim 1 of the present invention accommodates an inner cylinder having a keyway, an outer cylinder fitted with the inner cylinder, and the inner cylinder and the outer cylinder in an empty chamber. A thumb turn comprising at least a thumb turn piece and a thumb turn shaft for transmitting a turning force of the inner cylinder to the lock so that the lock is protruded or retracted by rotation of the inner cylinder and locked or unlocked. An engagement recess is formed at the front end of the thumb turn shaft, and an engagement portion is formed at the rear end of the inner cylinder so as to be detachably engaged with the engagement recess. By inserting the key into the key groove and pushing the inner cylinder in the thumb turn axis direction, the inner cylinder moves rearward and the engagement portion of the inner cylinder is engaged with the engagement recess of the thumb turn shaft, and the inner cylinder is rotated. By moving, the thumb turn shaft rotates as a whole, and the lock rod is raised and lowered to lock and unlock. When the inner cylinder is pushed in, the inner cylinder moves in the locking direction by rotating the inner cylinder in the locking direction, and the inner cylinder moves forward by removing the key from the key groove of the inner cylinder. The engagement portion of the inner cylinder is disengaged from the engagement recess of the thumb turn shaft so that the thumb turn shaft cannot rotate and the thumb turn is idled.

   According to a second aspect of the present invention, in addition to the configuration of the first aspect, the thumb turn faces the inner cylinder fitting insertion hole of the outer cylinder on the side wall of the outer cylinder, and extends in the axial direction of the outer cylinder. An intersecting guide groove is formed, and a positioning member that is normally urged in the direction of the inner cylinder fitting insertion hole by a spring is fitted in the guide groove, and the key is a key of the inner cylinder. When the inner cylinder is inserted in the groove and pushed in the thumb-turn axial direction, a notch is formed to engage the positioning member.

   The thumb turn according to claim 3 of the present invention is the thumb turn according to claim 1 or 2, wherein a thumb turn cover having a thumb turn shaft insertion hole formed coaxially with the inner cylinder is provided at a rear portion of the thumb turn piece. The thumb turn piece is covered, and the thumb turn shaft is inserted into the thumb turn shaft insertion hole of the thumb turn cover so that the thumb turn shaft is connected to the thumb turn cover.

  According to a fourth aspect of the present invention, there is provided a thumb turn comprising: an inner cylinder having a key groove; an outer cylinder fitted with the inner cylinder; a thumb turn piece containing the inner cylinder and the outer cylinder in an empty chamber; A thumb turn comprising at least a thumb turn shaft for transmitting the turning force of the inner cylinder to the lock stick so as to lock or unlock the lock stick by protruding or retracting by rotation, and the front end portion of the thumb turn shaft Is formed with an engaging recess that is detachably engaged with the engaging recess at the rear end of the inner cylinder, and a key is inserted into the key groove of the inner cylinder. By pushing the inner cylinder in the direction of the thumb turn axis, the inner cylinder moves rearward, the engaging portion of the inner cylinder is engaged with the engaging recess of the thumb turn shaft, and the thumb cylinder is rotated by rotating the inner cylinder. Rotate together to unlock and unlock the lock, while thumb turn pin A guide hole for inserting a stopper button is formed in the sleeve and the outer cylinder, and the stopper button is movably inserted into the guide hole, and a recess is formed on one surface of the stopper button, and a rear portion is formed. A spring is provided, and the stopper button is normally urged by the spring so as to protrude forward, and a notch is formed on the lower surface of the inner cylinder and the key, respectively. When the inner cylinder and the thumb turn shaft are engaged and the lock rod is raised and retracted to enable locking / unlocking operation, the notch of the inner cylinder and the notch of the combined key coincide with each other. The stopper button is provided so that the stopper button protrudes forward of the thumb turn by the biasing force of the spring, and the engagement between the stopper button recess and the locking member is released. When the locking / unlocking operation is possible, by pressing the stopper button, the locking member is engaged with the recess of the stopper button, and the engagement between the inner cylinder and the notch of the key is released. The key is removed from the keyway of the inner cylinder, and when the inner cylinder is pushed in, the inner cylinder is rotated in the locking direction so that the lock rod is protruded to lock the key in the inner cylinder. By pulling out from the keyway, the inner cylinder moves forward and the engagement part of the inner cylinder is disengaged from the engagement recess of the thumb turn shaft so that the thumb turn shaft cannot rotate and the thumb turn is idled. It is configured.

  According to a fifth aspect of the present invention, in the structure of the fourth aspect, the stopper button is formed with an engaging groove, and a locking piece is formed in the guide hole of the outer cylinder. The locking piece is engaged with the stopper button, and the movement length of the stopper button is restricted.

  According to the thumb turn of the first aspect of the present invention, in the thumb turn provided with at least an inner cylinder, an outer cylinder, a thumb turn and a thumb turn shaft, an engagement recess is formed at a front end portion of the thumb turn shaft, and the inner tube An engagement portion that is detachably engaged with the engagement recess is formed at the rear end portion, and an inner key is inserted into the key groove of the inner cylinder and the inner cylinder is pushed in the thumb turn axial direction. When the cylinder moves rearward, the engaging part of the inner cylinder is engaged with the engaging recess of the thumb turn shaft, and the thumb turn shaft is integrally rotated by turning the inner cylinder so that the lock rod is raised and lowered. When the inner cylinder is locked, the inner cylinder moves forward by removing the key from the key groove of the inner cylinder in a locked state in which the inner cylinder is rotated in the locking direction to protrude the lock rod. The engagement portion of the inner cylinder is the engagement recess of the thumb turn shaft Since the thumb turn shaft cannot rotate and the thumb turn is idled, it is possible to effectively prevent unauthorized unlocking of thumb turn, compared to the conventional example, The configuration for switching the thumb turn between the non-slipping state and the idling state is simple, the number of parts is further reduced, the assembling time is shortened, and the manufacturing cost can be reduced. In addition, the operation of switching the thumb turn between the non-slipping state and the idling state is different from the conventional example in which the inner cylinder is rotated by a key and a complicated clutch mechanism including a plurality of parts such as a pin, a cam member, and a clutch. The operation is simple because it is only necessary to insert the key into the keyway of the tube and press it.

  Further, the thumb turn of the present invention accommodates the inner cylinder and the outer cylinder by the thumb turn piece, so that the thumb turn piece is considerably large. Therefore, the orientation of this large thumb turn (that is, thumb turn piece) can be recognized with a simple glance at the unlocked and locked state, for example, when the portrait orientation is unlocked and the landscape orientation is locked. it can. That is, since the determination is based on the direction of the thumb turn itself, the locked / unlocked state can be recognized at a glance. Moreover, if the thumb turn (thum turn piece) is in the idling state, there is an advantage that it can be confirmed that the lock rod protrudes and is in the locked state.

  According to the thumb turn of the second aspect, a guide groove is formed on the side wall of the outer cylinder so as to face the inner cylinder insertion insertion hole of the outer cylinder and intersect the axial direction of the outer cylinder. Is fitted with a positioning member that is normally urged in the direction of the inner cylinder insertion insertion hole by a spring, and the key is inserted into the key groove of the inner cylinder and the inner cylinder is pushed in the thumb turn axial direction. In this case, since the notch for engaging the positioning member is formed, when the key is inserted into the key groove of the inner cylinder, the positioning member is engaged with the notch of the key by a spring. When the inner cylinder is rotated with the key, the key and the inner cylinder can be prevented from moving, and the rotation with the key can be smoothly and reliably performed.

  According to the thumb turn according to claim 3, a thumb turn cover in which a thumb turn shaft insertion hole is formed coaxially with the inner cylinder is provided at the rear part of the thumb turn piece so as to cover the empty space of the thumb turn piece, The thumb turn shaft is inserted into the thumb turn shaft insertion hole, and the thumb turn shaft is connected to the thumb turn cover, so the thumb turn cover is a built-in component (inner cylinder or outer cylinder) built into the empty space of the thumb turn piece. And a tumbler pin, a positioning member, etc.) can be protected from dust, and a member for connecting the thumb turn shaft to the thumb turn piece can also be used.

  According to the fourth aspect of the present invention, the thumb turn has the effect of the first aspect, and a guide hole for inserting the stopper button is formed in the thumb turn piece and the outer cylinder, and the stopper button can be moved in the guide hole. The stopper button is recessed and formed on one surface of the stopper button, and a spring is provided at the rear, and the spring button is normally biased to protrude forward by the spring. Notches are formed on the bottom surfaces of the cylinder and the key, respectively, and when the key is pushed, the inner cylinder and the thumb turn shaft are engaged so that the lock rod is raised and lowered, and when the locking and unlocking operation is possible, the inner cylinder The positions of the notch and the notch of the combined key coincide with each other, and a locking member is engaged with both notches, and the stopper button is moved forward of the thumb turn by the biasing force of the spring. Protruding and provided so that the engagement between the recess of the stopper button and the locking member is released, and when the locking / unlocking operation is possible, the locking member is pushed by pressing the stopper button. Since the engagement between the inner cylinder and the notch of the key is released so that the key can be removed from the keyway of the inner cylinder, the key is locked unless the stopper button is pressed. Since the (key) cannot be removed, it is possible to prevent the key (key) from being inadvertently removed due to mischief by a child or the like.

  According to the thumb turn of the fifth aspect, the stopper button is formed with the engaging groove, the locking piece is formed in the guide hole of the outer cylinder, the locking piece is engaged with the engaging groove, and the stopper Since the movement length of the button is regulated, the stroke length of the stopper button can be regulated to be constant and positioning can be ensured.

Example 1
A first embodiment of the present invention will be described below with reference to FIGS.
In FIG. 1, reference numeral 1 denotes a door lock attached to the door A, and this door lock 1 is a lock case having a lock rod 3 and a retracting operation mechanism (not shown) for retracting the lock rod 3. 2, a cylinder (not shown) provided on the outdoor side, a thumb turn 10 according to the present invention provided coaxially with the cylinder on the indoor side, and the like. The lock rod 3 can be locked or unlocked by projecting or retreating the cylinder by a key or by rotating the thumb turn 10.

  In FIG. 1, 4 is a lock case mounting screw, 5 is a front plate, and 6 is a front back plate.

  The thumb turn 10 includes an inner cylinder 20 having a key groove 21, an outer cylinder 30 fitted with the inner cylinder 20, a thumb turn piece 40 in which the inner cylinder 20 and the outer cylinder 30 are accommodated in an empty chamber 41, A thumb turn shaft 50 for transmitting the rotational force of the inner cylinder 20 to the lock rod 3 is provided at least so that the lock rod 3 is protruded or retracted by the rotation of the tube 20 to be locked or unlocked.

The inner cylinder 20 and the outer cylinder 30 are provided with a tumbler pin and a pin spring similarly to a so-called cylinder lock.
That is, the inner cylinder 20 has a substantially quadrangular prism shape, and a key groove 21 is formed in the axial direction, and one or a plurality of lower pin holes 22 ... 22 are formed in the upper wall portion. Further, an engagement portion 23 is formed at the rear end portion of the inner cylinder 20 to be detachably engaged with an engagement recess 51 formed at a front end portion of a thumb turn shaft 50 described later. ing. In addition, 24 is a lower pin and 25 is a locking piece.

  The outer cylinder 30 is formed in a rail shape having a U-shaped cross section, and is fitted in an inner cylinder fitting insertion hole 31 formed in the axial direction so that the inner cylinder 20 can move forward or backward. One or more upper pin holes 32... 32 are formed in the upper wall portion of the outer cylinder 30 so as to face the lower pin holes 22. Upper pins 33... 33 and pin springs 34... 34 are fitted into the holes 32... 32, and the upper and lower pins 33 and 24 are always urged toward the key groove 21 of the inner cylinder 20 by the pin spring 34.

  Further, a part of the side wall of the outer cylinder 30 (which is a lower wall portion in the embodiment, but is not limited thereto) faces the inner cylinder insertion hole 31 of the outer cylinder 30, and the outer cylinder 30 A guide groove 35 intersecting with the axial direction is formed, and a positioning member 37 such as a ball or a pin is fitted into the guide groove 35 by a spring 36, which is normally urged toward the inner tube insertion hole 31.

   On the other hand, the key K is formed with a notch K1 with which the positioning member 37 is engaged when the key K is inserted into the key groove 21 of the inner cylinder 20 and the inner cylinder 20 is pushed toward the thumb turn shaft 50. It is. In this case, the positioning member 37 is engaged not only with the notch K1 of the key K but also with the notch 26 formed at the lower end of the inner cylinder 20.

  The outer cylinder 30 in which the inner cylinder 20 is fitted from the side inlet 31a of the inner cylinder insertion hole 31 is covered with the outer cylinder cover 60 on the front surface, the upper and lower surfaces, and the right side surface (side inlet 31a) in FIG. ing. By providing the outer cylinder cover 60, there is an advantage that the pin spring 34, the spring 36, etc. can be easily assembled. A conduction hole 61 is formed in the front surface of the outer cylinder cover 60 so that the inner cylinder 20 can be projected and retracted.

   As shown in FIGS. 2 to 6, the thumb turn piece 40 has a substantially plate shape so that the front portion can be easily grasped by hand, and the rear portion is a thick portion having a substantially elliptical cross section. And in the axial direction of this thumb turn piece 40, the said empty chamber 41 which fits the above-mentioned inner cylinder 20, the outer cylinder 30, and the outer cylinder cover 60 is formed, In the front end surface of this empty chamber 41, The front end surface of the outer cylinder cover 60 abuts and restricts the outer cylinder cover 60 and the outer cylinder 30 from protruding forward. Further, the front end surface of the thumb turn piece 40 is recessed in an arcuate shape so that the rear end surface K2 of the gripping portion of the key K is in contact with the arcuate recess 42.

  An annular flange 43 is formed on the outer periphery of the rear end portion of the thumb turn piece 40, and a thumb turn cover 70 is fitted into a recess 44 formed by the annular flange 43 so that the thumb turn cover 70 Both ends are fixed with screws 71.

  The thumb turn cover 70 covers the vacant chamber 41 of the thumb turn piece 40, which has a substantially elliptical shape when viewed from the rear as shown in FIG. 4, and is shown in FIG. Thus, the cross section is substantially dish-shaped, and in the axial direction, a thumb-turn shaft insertion hole 72 having a circular cylindrical shape is formed coaxially with the inner cylinder 20, and the thumb-turn shaft 50 from the front of the thumb-turn shaft insertion hole 72. The rear end portion is inserted, the front end portion thereof is fitted, and the thumb turn shaft 50 is connected to the thumb turn cover 70.

   An engagement recess 51 made of a vertically long square hole is formed at the front end of the thumb turn shaft 50, and the rear end of the inner cylinder 20 is slid into the engagement recess 51. The engaging portion 23 formed in the above is detachably engaged.

  The thumb turn shaft 50 is formed with a through hole 52 on a diameter line slightly behind the engaging recess 51, and a click ball 54 urged in the circumferential direction by a spring 53 such as a coil spring in the through hole 52. 54 is fitted. The click balls 54, 54 are engaged with an inward flange 73 and a notch 74 formed at the rear end of the thumb turn cover 70, so that the thumb turn shaft 50 does not come out of the thumb turn cover 70. It is bound to.

   Further, the rear end portion of the thumb turn shaft 50 is formed in a cross shape in cross section, and the cross shape portion 55 is connected to a dead hub (not shown) built in the lock case 2. Therefore, by rotating the thumb turn shaft 50, the dead hub is operated to project or retract the lock rod 3 to lock or unlock.

As shown in FIGS. 1 and 5, a thumb turn collar 80 is connected to the rear end side of the thumb turn piece 40, and an outer cylinder 81 in which the thumb turn shaft 50 is inserted is inserted into the collar 80. The outer body 81 is covered with a cap 82 on the front side.
In FIGS. 1 and 5, reference numeral 83 denotes a screw for connecting the cap 82 and the outer body 81.

Next, the usage method or operation of the thumb turn 10 according to the first embodiment of the present invention will be described below.
First, as shown in FIGS. 8 to 10, when the engagement portion 23 of the inner cylinder 20 is disengaged from the engagement recess 51 of the thumb turn shaft 50, the key (key) is inserted into the key groove 21 of the inner cylinder 20. ) In the state where K is inserted, the boundary line between the upper pin 33 and the lower pin 24 coincides with the share line L which is the boundary line between the inner cylinder 20 and the outer cylinder 30, and the inner cylinder 20 is inside the outer cylinder 30. It will be in the state which can move the inside of the cylinder fitting insertion hole 31 back.

  Therefore, when the key K is pushed in from the inserted state of FIG. 8 until the rear end surface K2 of the key K comes into contact with the arc-shaped recess 42 of the thumb turn piece 40, the inner cylinder 20 moves in the direction of the thumb turn shaft 50 as shown in FIG. The engagement portion 23 of the inner cylinder 20 is engaged with the engagement recess 51 of the thumb turn shaft 50. As a result, the thumb-turn shaft 50 is connected to the inner cylinder 20, so that the thumb-turn shaft 50 is rotated integrally by rotating the thumb turn 10 or the combined key K clockwise or counterclockwise, and the lock rod 3 protrudes. Alternatively, it is retracted and locked or unlocked. This state is an operable non-idling state.

As shown in FIGS. 11 to 13, in a state where the key K is pushed into the key groove 21 and the thumb turn shaft 50 can be rotated in the locking or unlocking direction, the key K is rotated in the locking direction, and the direction of the thumb turn 10 is changed. 7 is turned sideways as shown in FIG. 7, the lock rod 3 is projected through the thumb-turn shaft 50 to be locked. In this state, the inner cylinder 20 moves forward by removing the key K from the key groove 21 of the inner cylinder 20. As a result, the engagement portion 23 of the inner cylinder 20 is disengaged from the engagement recess 51 of the thumb turn shaft 50, the linkage between the inner tube 20 and the thumb turn shaft 50 is cut off, the thumb turn shaft 50 cannot rotate, and the thumb turn 10 The (inner cylinder 20, outer cylinder 30, thumb turn piece 40) is idled. This state is the idling state.
In this idling state, even if an attempt is made to rotate the thumb turn illegally with an unauthorized unlocking tool from outside the door, the thumb turn will not run and it will not be unlocked.

   Further, as shown in FIGS. 11 to 13, when the key K is pushed in the keyway 21 and the key K is rotated in the unlocking direction and the thumb turn 10 is oriented vertically as shown in FIG. The hook 3 is retracted via the thumb turn shaft 50 and is unlocked. In this state, by removing the key K from the key groove 21 of the inner cylinder 20, the engagement portion 23 of the inner cylinder 20 is released from the engagement recess 51 of the thumb turn shaft 50 as shown in FIG. Cannot rotate, and the thumb turn 10 is idled. That is, in this case, it is in the unlocked state and the idling state.

   As described above, it can be seen from the indoor side that the thumb turn 10 is unlocked when it is vertically oriented as shown in FIG. 14 and is locked when it is horizontally oriented as shown in FIGS. It is possible to determine with certainty just by doing. This has the advantage that, for example, it can be confirmed from a distant place whether or not the front door lock is locked.

   1 and FIG. 7, in order to make the thumbturn in the locked / idle state unlocked, in the state shown in FIGS. 1 and 7, the key K is inserted into the key groove 21 and then pushed, so that the inner cylinder 20 The engaging portion 23 may be engaged with the engaging recess 51 of the thumb turn shaft 50 and the combined key K may be rotated in the unlocking direction.

(Example 2)
A second embodiment of the present invention will be described below with reference to FIGS.
The second embodiment is an embodiment according to claims 4 and 5. In the configuration of the first embodiment, since the key (key) can be extracted at all times in the locked state, the key (key) is inadvertently extracted by mischief or the like in the locked state, for example, the thumb turn is unlocked. Although there is a problem that the operation cannot be performed, in the configuration of the second embodiment, the problem of the first embodiment is solved by preventing the key from being removed unless the stopper button is pressed.

The second embodiment basically has the same configuration, principle, and operation as the first embodiment. However, as described above, the configuration and operation of the characteristic portion that prevents the key from being inadvertently extracted. Is notably different.
Therefore, since the configuration and operation common to the first embodiment can be understood by referring to the description of the first embodiment, the detailed description will be omitted, and the configuration and operation will be focused on the features of the second embodiment. The operation and the like will be described below.

That is, the thumb turn 10 of the second embodiment includes the inner cylinder 20, the outer cylinder 30, the thumb turn piece 40, the thumb turn shaft 50, the outer cylinder cover 60 and the thumb turn cover 70 in the same manner as in the first embodiment. I have.
That is, the inner cylinder 20 has the same other configuration, although the shape of the notch 26 formed on the lower surface thereof is slightly different from that of the first embodiment.

   Further, the outer cylinder 30 is formed in a rail shape having a U-shaped cross section and is formed in substantially the same manner as that of the first embodiment, but a guide hole 38 is formed in the lower portion of the outer cylinder 30 in the axial direction, A stopper button 90, which will be described later, is fitted into the guide hole 38 so as to be movable in the axial direction, and a guide for guiding the locking member 100, which will be described later, to move up and down between the stopper button 90 and the lower part of the outer cylinder 30. It is characterized in that the hole 35 is formed. 16, 20, 21, 24, and 30, 39 a is a bottom plate of the outer cylinder 30, 39 b is a middle plate of the outer cylinder 30, and the guide hole 38 is formed by the bottom plate 39 a and the middle plate 39 b. It is formed.

   The inner cylinder 20 is fitted from the side entrance 31a of the inner cylinder fitting insertion hole 31 of the outer cylinder 30 and the stopper 30 is fitted in the guide hole 38 of the outer cylinder 30 so that the outer cylinder 30 The outer cylinder cover 60 covers the upper part, the upper and lower surfaces, and the lower part of the rear surface.

  Similar to the first embodiment, the thumb turn piece 40 has an empty chamber 41 formed for fitting the inner cylinder 20, the outer cylinder 30, and the outer cylinder cover 60. The front end surface of the outer cylinder cover 60 abuts and restricts the outer cylinder cover 60 and the outer cylinder 30 from protruding forward. A thumb turn cover 70 similar to that of the first embodiment is fitted to the rear end portion of the thumb turn piece 40 and fixed with screws 71.

    A guide hole 45 communicating with the guide hole 38 of the outer cylinder 30 is formed in the axial direction of the lower portion of the thumb turn piece 40, and the front portion of the stopper button 90 is fitted in the guide hole 45 so as to be movable in the axial direction. It is inserted.

   As shown in FIG. 20, the stopper button 90 is formed integrally with a front portion 90a having a rod shape and a rear portion 90b having a substantially plate shape. A recess 91 is formed on one surface (upper surface) of the rear portion 90b of the stopper button 90, and a spring 92 is provided on the spring receiving portion 94 at the rear end portion. The stopper button 90 is normally biased by the spring 92 so as to protrude forward.

The thumb turn shaft 50 has the same configuration as that of the first embodiment, and the engagement portion 23 at the rear end portion of the inner cylinder 20 can be freely engaged with and disengaged from the engagement recess 51 formed at the front end portion of the thumb turn shaft 50. The thumb turn 10 and the thumb turn shaft 50 are connected and disconnected.
The thumb turn cover 70 has the same configuration as that of the first embodiment, and connects the thumb turn shaft 50 to the thumb turn piece 40.

Notches 26 and K1 are respectively formed on the lower surfaces of the inner cylinder 20 and the key K, and the inner cylinder 20 and the thumb turn shaft 50 are engaged by pressing the key K as shown in FIGS. By rotating the thumb turn piece 40, the inner cylinder 20 and the thumb turn shaft 50 are integrally rotated via the key K, so that the lock rod 3 of the door lock 1 can be moved in and out to enable the locking / unlocking operation. In this lock / unlock operation enabled state, as shown in FIG. 24, the notch portion 26 of the inner cylinder 20 and the notch portion K1 of the combined key K are aligned with each other, and the notch portions 26, At K1, the locking member 100 engaged with the recess 91 of the stopper button 90 protrudes forward by the biasing force of the spring 92, and is pushed up and engaged by the action of the inclined surface of the periphery of the recess 91. The engagement between the recess 91 of the stopper button 90 and the locking member 100 is released.
Therefore, in this state, even if the key K is to be extracted, the locking member 100 is engaged with the notch K1 of the key (key) and cannot be extracted. As a result, it is possible to prevent the combined key from being inadvertently extracted due to mischief or the like.

   When the locking / unlocking operation is possible, as shown in FIGS. 30 to 32, by pressing the stopper button 90, the locking member 100 is engaged with the recess 91 of the stopper button 90 and the inner cylinder The engagement of the key 20 with the notch 26, K1 of the key K is released so that the key K can be removed from the key groove 21 of the inner cylinder 20.

  When the inner cylinder 20 is pushed in, the inner cylinder 20 is rotated in the locking direction as shown in FIGS. By extracting the key K from the key groove 21 of the inner cylinder 20, the inner cylinder 20 moves forward as shown in FIG. 16 and the engagement portion 23 of the inner cylinder is disengaged from the engagement recess 51 of the thumb-turn shaft 50. The thumb turn shaft 50 cannot rotate, and the thumb turn piece 40 is idled. Thereby, the thumb turn from the outside can be prevented.

  An engaging groove 93 is formed on the lower surface of the stopper button 90, a locking piece 38a is formed in the guide hole 38 of the outer cylinder 30, and the locking piece 38a is engaged with the engaging groove 93. The movement length (protrusion dimension) of the stopper button 90 is restricted.

    The method of use or operation of the second embodiment is generally the same as that of the first embodiment except for the operation of the stopper button 90, and the details are described in the description of the first embodiment. [0043].

   15 to 19, as shown in FIGS. 24 to 27, the key K is completely pushed into the key groove 21 of the inner cylinder 20, and the engagement portion 23 of the inner cylinder 20 is engaged with the engagement recess 51 of the thumb turn shaft 50. 28 to 29, the thumb turn piece 40 is turned sideways as shown in FIGS. 28 to 29, and the lock rod is projected. Then, the thumb turn piece 40 is turned vertically and the key K is pulled out. State)). At this time, the inner cylinder 20 projects forward, and the engagement portion 23 and the engagement recess 51 of the thumb turn shaft 50 are disengaged.

21 to 23, when the key K is inserted into the key groove 21 of the inner cylinder 20, the boundary line between the upper pin 33 and the lower pin 24 is formed between the inner cylinder 20 and the outer cylinder 30. In agreement with the share line L, which is a boundary line, the inner cylinder 20 can move backward in the inner cylinder insertion hole 31 of the outer cylinder 30.
At this time, since the notch K1 of the key K is not aligned with the guide hole 35 of the outer cylinder 30, the stopper member 90 remains engaged with the recess 91 of the stopper button 90, The stopper button 90 remains retracted (immersed).

   Therefore, when the key K is pushed in from the inserted state of FIG. 21 until the rear end surface K2 of the upper part of the key K comes into contact with the upper front surface 46 of the thumb turn piece 40, the inner cylinder 20 has the thumb turn shaft 50 as shown in FIG. By moving in the direction, the engaging portion 23 of the inner cylinder 20 is engaged with the engaging recess 51 of the thumb turn shaft 50. As a result, the thumb-turn shaft 50 is connected to the inner cylinder 20, so that the thumb-turn shaft 50 is integrally rotated by rotating the thumb piece 40 or the key K in the clockwise direction or the counterclockwise direction. 1) protrudes or retracts and is locked or unlocked. This state is an operable non-idling state, and details are as shown in FIGS.

   In this non-idle state (see FIGS. 24 to 27), when the key K is rotated in the locking direction and the thumb turn piece 40 is turned sideways as shown in FIGS. And is locked.

   In the locked / non-idling state, even if the key K is to be removed, the locking member 100 is engaged with the notch K1 of the key (key) and cannot be removed. This prevents the key from being inadvertently removed due to mischief or the like, so that the thumb turn operation can be used with confidence.

As shown in FIGS. 30 to 32, when the stopper button 90 is pushed, the locking member 100 is engaged with the recess 91 of the stopper button 90 and the inner cylinder 20 Since the engagement of the key K with the notches 26 and K <b> 1 is released, the key K can be extracted from the key groove 21 of the inner cylinder 20.
When the key K is extracted from the key groove 21, as shown in FIG. 16, the inner cylinder 20 moves forward, and the engagement portion 23 of the inner cylinder 20 is disengaged from the engagement recess 51 of the thumb turn shaft 50. The thumb turn shaft 50 cannot rotate, and the thumb turn piece 40 is idled.
This state is the idling state. Thereby, the thumb turn from the outside can be prevented.

   As shown in FIGS. 24 to 27, when the key K is pushed into the keyway 21 and the key K is rotated in the unlocking direction and the thumb turn piece 40 is oriented vertically as shown in FIG. The lock rod 3 is retracted via the thumb-turn shaft 50 and is unlocked. In this state, the stopper button 90 is projected as shown in FIGS. 24 and 27 and the locking member 100 is engaged with the notch K1 of the key K, so that the key K is inserted into the key groove of the inner cylinder 20. However, when the stopper button 90 is pushed in as shown in FIG. 30, the engaging member 100 is disengaged from the notch K1 of the key K as described above. Can be extracted.

  In the case of the second embodiment, the thumb turn piece 40 is unlocked when the thumb turn piece 40 is vertically oriented as shown in FIG. 27, and when the thumb turn piece 40 is horizontally oriented as shown in FIGS. 28, 29, 33 and 34. Is provided in a locked state.

  In addition, the outer cylinder cover 60 shown by each Example is not essential in this invention, The outer cylinder cover 60 can be abbreviate | omitted by changing the design of the empty room 41 of the thumb turn piece 40 suitably.

   The present invention can be applied as a thumb turn used not only for a door lock of a building but also for a lock of an automobile or other closed body.

It is the front view of the locked and idling state which attached the thumb turn which concerns on Example 1 of this invention to the door lock, and was seen from the room inner side. It is a longitudinal cross-sectional view of the idling state which extracted the joint key in the thumb turn of Example 1, and made the thumb turn piece vertical. It is the sectional view on the AA line of FIG. FIG. 3 is a sectional view taken along line B-B in FIG. 2. It is CC sectional view taken on the line of FIG. It is a disassembled perspective view of the thumb turn of Example 1. FIG. It is the side view of the locking and idling state which made the thumb turn of Example 1 sideways. It is a longitudinal cross-sectional view of the state which inserted the key in the keyway in the unlocked and idling state where the thumb turn of Example 1 is vertical. It is the DD sectional view taken on the line of FIG. It is the EE sectional view taken on the line of FIG. FIG. 9 is a longitudinal sectional view showing a state where the key is completely pushed into the key groove in FIG. 8. It is the FF sectional view taken on the line of FIG. It is the GG sectional view taken on the line of FIG. It is a front view of a thumb turn state. It is a perspective view of the state which extracted the key in the thumb turn which concerns on Example 2 of this invention. It is a longitudinal cross-sectional view of the idling state which extracted the key in the thumb turn of Example 2, and made the thumb turn piece vertical. It is the JJ sectional view taken on the line of FIG. It is the KK sectional view taken on the line of FIG. It is the LL sectional view taken on the line of FIG. It is a disassembled perspective view of the thumb turn of Example 2. FIG. It is a longitudinal cross-sectional view of the state which inserted the key in the keyway in the idle state in which the thumb turn of Example 2 is vertical. It is the MM sectional view taken on the line of FIG. It is the NN sectional view taken on the line of FIG. FIG. 22 is a longitudinal sectional view showing a state where the key is completely pushed into the key groove in FIG. 21. It is the OO sectional view taken on the line of FIG. It is the PP sectional view taken on the line of FIG. It is a perspective view of the thumb turn of FIG. It is the front view of the locking and idling state which made the thumb turn of FIG. 27 sideways. It is a side view of FIG. FIG. 25 is a longitudinal sectional view showing a state where a stopper button is pressed in FIG. 24. It is the QQ sectional view taken on the line of FIG. It is the RR sectional view taken on the line of FIG. It is a front view of the state which made the thumb turn locked state in FIG. 24, and extracted the key. It is a side view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door lock 2 Lock case 3 Lock case 10 Thumb turn 20 Inner cylinder 21 Keyway 23 Engagement part 24 Lower pin 26 Notch part 30 Outer cylinder 31 Inner cylinder insertion hole 33 Upper pin 34 Pin spring 35 Guide hole 36 Spring 37 Positioning member 38 Guide hole 38a Locking piece 40 Thumb turn piece 41 Empty space 45 Guide hole 50 Thumb turn shaft 51 Engaging recess 53 Spring 54 Click ball 60 Outer cylinder cover 70 Thumb turn cover 72 Thumb turn shaft insertion hole 74 Notch 80 Color 90 Stopper button 91 Concave portion 92 Spring 93 Engaging groove 100 Locking member K Key (key)
K1 Notch

Claims (5)

Locked by an inner cylinder having a key groove, an outer cylinder fitted with the inner cylinder, a thumb turn piece containing the inner cylinder and the outer cylinder in an empty chamber, and a lock rod protruding or retracted by rotation of the inner cylinder Or a thumb turn comprising at least a thumb turn shaft for transmitting the turning force of the inner cylinder to the lock so as to be unlocked,
An engagement recess is formed at the front end portion of the thumb turn shaft, and an engagement portion that is detachably engaged with the engagement recess is formed at the rear end portion of the inner cylinder,
By inserting a key into the key groove of the inner cylinder and pushing the inner cylinder in the thumb turn axis direction, the inner cylinder moves rearward, and the engagement portion of the inner cylinder is engaged with the engagement recess of the thumb turn shaft, By rotating the inner cylinder, the thumb turn shaft rotates integrally, and the lock basket is raised and lowered, and unlocked.
When the inner cylinder is pushed in, the inner cylinder is rotated in the locking direction, and in the locked state in which the lock rod is projected, the inner cylinder is moved forward by removing the key from the key groove of the inner cylinder. The thumb turn is configured such that the engagement portion of the cylinder is disengaged from the engagement recess of the thumb turn shaft so that the thumb turn shaft cannot rotate and the thumb turn is idled. A guide hole is formed in the side wall of the outer cylinder so as to face the inner cylinder fitting insertion hole of the outer cylinder and intersect the axial direction of the outer cylinder. A positioning member biased in the direction is fitted,
2. The thumb turn according to claim 1, wherein the key is formed with a notch that engages with the positioning member when the key is inserted into the key groove of the inner cylinder and the inner cylinder is pushed in the thumb turn axial direction. .    At the rear part of the thumb turn piece, a thumb turn cover having a thumb turn shaft insertion hole formed coaxially with the inner cylinder is provided to cover the empty space of the thumb turn piece. The thumb turn according to claim 1 or 2, wherein the thumb turn shaft is inserted and connected to the thumb turn cover. Locked by an inner cylinder having a key groove, an outer cylinder fitted with the inner cylinder, a thumb turn piece containing the inner cylinder and the outer cylinder in an empty chamber, and a lock rod protruding or retracted by rotation of the inner cylinder Or a thumb turn comprising at least a thumb turn shaft for transmitting the turning force of the inner cylinder to the lock so as to be unlocked,
An engagement recess is formed at the front end portion of the thumb turn shaft, and an engagement portion that is detachably engaged with the engagement recess is formed at the rear end portion of the inner cylinder,
By inserting a key into the key groove of the inner cylinder and pushing the inner cylinder in the thumb turn axis direction, the inner cylinder moves rearward, and the engagement portion of the inner cylinder is engaged with the engagement recess of the thumb turn shaft, By rotating the inner cylinder, the thumb turn shaft rotates integrally, and the lock basket is raised and lowered, and unlocked.
On the other hand, a guide hole for inserting a stopper button is formed in the thumb turn piece and the outer cylinder, and the stopper button is movably inserted into the guide hole,
A concave portion is formed on one surface of the stopper button, and a spring is provided on the rear portion. The spring is normally biased to protrude forward by the spring,
Notches are formed on the lower surfaces of the inner cylinder and the key, respectively, and when the key is pushed, the inner cylinder and the thumb-turn shaft are engaged so that the lock rod is raised and retracted, and the inner cylinder and the key can be locked and unlocked. The positions of the notch portion of the cylinder and the notch portion of the combined key coincide with each other, and the locking member engages with both the notch portions, and the stopper button protrudes forward of the thumb turn by the biasing force of the spring. , Provided so that the engagement between the recess of the stopper button and the locking member is released,
When the locking / unlocking operation is possible, by pressing the stopper button, the locking member is engaged with the recess of the stopper button, and the engagement between the inner cylinder and the notch of the key is released. The key is removed from the keyway of the inner cylinder,
When the inner cylinder is pushed in, the inner cylinder is rotated in the locking direction, and in the locked state in which the lock rod is projected, the inner cylinder is moved forward by removing the key from the key groove of the inner cylinder. The thumb turn is configured such that the engagement portion of the cylinder is disengaged from the engagement recess of the thumb turn shaft so that the thumb turn shaft cannot rotate and the thumb turn is idled. An engaging groove is formed in the stopper button, and a locking piece is formed in the guide hole of the outer cylinder, and the engaging piece is engaged with the engaging groove so as to regulate the moving length of the stopper button. 5. The thumb turn according to claim 4, wherein the thumb turn is configured.

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