JP2001288937A - Locking-unlocking apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking-unlocking apparatus which is provided with an indoor-side locking-unlocking structure capable of preventing illegal rotational operation, and has crime preventive performance. SOLUTION: The locking-unlocking apparatus is comprised of a cover plate 59, a connecting shaft portion 13, a thumb turn 65, and a control plate 31. The cover plate 59 is arranged on an indoor surface of a door 3, and has an operating hole 60. The connecting shaft portion 13 is placed on an indoor side of the door 3, and interlocked to a cylinder lock 5 to be engaged with an operating member 8 for moving a lock member to and fro within a lock box 7. Further, the connecting shaft portion 13 has an engaging hole 15 formed therein. The thumb turn 65 has a connecting projection 71 formed thereon, which projection penetrates through the operating hole 60 of the cover plate 59 to be engaged with and interlocked to the engaging hole 15. The control plate 31 is positioned between the cover plate 59 and the engaging hole 15, slidably movable along the indoor surface of the door 3, and biased in one sliding direction by an urging spring 53. Further, the control plate 31 includes a sheltering portion 47 for blocking the operating hole 60 of the cover plate 59 and sheltering the engaging hole 15, and a penetrating hole portion 37 for allowing the operating hole 60 of the cover plate 59 to communicate with the engaging hole 15, to thereby bring the connecting portion 71 of the thumb turn 65 into a penetrating state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking / unlocking device which is provided on an opening / closing body such as an entrance door and locks / unlocks the door.

[0002]

2. Description of the Related Art Usually, a cylinder lock is provided at an entrance door or the like. From the outdoor side, the cylinder lock is rotated using a key, and the dead bolt is moved forward and backward to lock and unlock. Locking is performed, and from the indoor side, a dead bolt is advanced and retracted by rotating a thumb turn interlockingly connected to the cylinder lock to perform locking and unlocking.

Usually, the rotation of the thumb turn is
It is within a rotation range of about 90 °, and it is configured to be locked or unlocked in that range, and the knob portion of this thumb turn formed in a substantially flat shape is changed to a substantially vertical state and a substantially horizontal state. For example, by rotating between the vertical positions, an unlocked state is obtained in a vertical state, and a locked state is obtained in a horizontal state.

In general, the above-mentioned thumb-turn structure is a shaft-like member for interlocking the advance / retreat of a dead bolt in a lock box, and is provided at an end of the shaft member protruding from an indoor side surface of a door, a washer, or an escation. , The knob portion is integrally formed. The knob is formed so as to extend outward with respect to the shaft member so that the knob can be easily gripped. The shaft and the knob are formed in a substantially T-shape so that the knob is not easily damaged. It is made of a rigid body such as a cast product.

[0005]

In the above-described structure of the thumb-turn, the normal usage is to operate from the side where the thumb-turn is provided, that is, if the thumb-turn is provided indoors, from the indoor side. This is a usage method in which the thumb turn is pinched and rotated in a state facing the thumb turn, but as described above, since the thumb turn is rigid, it is possible to turn the knob by stumbling. It is. That is, by applying a rotational force to only one side of a pair of wing-shaped portions of a knob formed to extend outward with respect to the shaft member, other than a normal use method of rotating the shaft member of the thumb turn. Operation is possible.

For this reason, a door provided with a locking device provided with a thumb-turn has a glass window portion or a glass window portion adjacent to the door for lighting indoors. In some cases, a part of the glass window may be split from the outdoor side, the hand may be put into the indoor side, and the thumb turn may be groped to apply a rotational force to one of the wing-shaped portions of the thumb turn, thereby causing the thumb turn to be rotated. There are:
There is a security problem that the locked state is released and the vehicle is intruded.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a security locking / unlocking device having an indoor locking / unlocking structure capable of preventing unauthorized turning operation. The purpose is.

[0008]

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. The locking / unlocking device of the present invention includes a cylinder lock 5 that is locked and unlocked by a key on the outdoor side of the door 3 and a rotation operation member that can perform locking and unlocking operations in conjunction with the cylinder lock 5 on the indoor side. In the device, a cover plate 59 provided on the indoor surface of the door 3 and having an operation hole 60 formed therein,
It is located on the indoor side of the door 3 and is interlockedly connected to the cylinder lock 5 and is fitted to an operating member 8 for moving a lock member forward and backward from the door end face in the lock box 7 and is rotatably interlockedly connected. Penetrating the connecting shaft portion 13 in which the connected portion 15 is formed on the indoor side end surface, and the operation hole 60 of the cover plate 59;
A rotary operation member 65 in which a connecting portion 71 of a predetermined shape is formed which is fitted and interlockedly connected with the connected portion 15 of the connecting shaft portion 13.
And the connected portion 1 of the cover plate 59 and the connecting shaft portion 13
5 and is disposed so as to be slidable along the indoor surface of the door 3 and urged in one sliding direction by an urging member 53 so that the operation hole 60 of the cover plate 59 is A cover 47 is provided to cover the connected portion 15 of the connecting shaft 13, and the operation hole 60 of the cover plate 59 communicates with the connected portion 15 to penetrate the connecting portion 71 of the rotary operation member 65. And an operation plate 31 having a through hole 37 to be in a state.

Further, the locking and unlocking device of the present invention includes a cylinder lock 5 which is locked and unlocked by a key on the outdoor side of the door 3,
In the locking / unlocking device provided on the indoor side with a rotating operation member capable of performing an unlocking operation in conjunction with the cylinder lock 5, a cover plate 5 provided on the indoor surface of the door 3 and having an operation hole 60 formed therein.
9 and an operating member 8 which is located on the indoor side of the door 3 and is interlocked and connected to the cylinder lock 5 and moves a lock member forward and backward from the end face of the door in the lock box 7 so as to be rotatably interlocked and connected. And a connecting shaft portion 13 in which the connected portion 15 is formed on the indoor side end surface, and a shaft portion 67 that penetrates the operation hole 60 of the cover plate 59, and at the tip of the shaft portion 67,
A rotation operating member 65 having a predetermined shape that is fitted and interlockedly connected to the connected portion 15 of the connection shaft portion 13 and is provided with a grip portion 69 at a base end, the cover plate 59 and the connection shaft It is located between the connected portion 15 of the portion 13 and is slidably disposed along the indoor surface of the door 3 in a direction orthogonal to the axis of the rotation operation member 65,
A cover 47 is urged by the urging member 53 in one sliding direction to close the operation hole 60 of the cover plate 59 and shield the connected portion 15 of the connection shaft 13.
And an operation plate 31 having a through hole 37 that allows the operation hole 60 of the cover plate 59 to communicate with the connected portion 15 and allows the shaft 67 of the rotation operation member 65 to pass therethrough. I have.

Further, the locking / unlocking device according to the present invention includes a cylinder lock 5 which is locked and unlocked by a key on the outdoor side of the door 3, and a rotary operation on the indoor side in which the locking and unlocking operation can be performed in conjunction with the cylinder lock 5. In a locking / unlocking device including a member, a cover plate 59 provided on the indoor surface of the door 3 and having an operation hole 60 formed therein, and a lock box in the door 3 penetrating through the operation hole 60 of the cover plate 59 The lock member 7 is provided with a shaft portion 68 protruding into the lock member 7 and is fitted to an operating member 8 linked to the cylinder lock 5 to move a lock member forward and backward from the door end face in the lock box 7. A connecting portion 71 having a predetermined shape for interlocking connection is formed, and a rotating operation member 66 provided with a grip portion 69 at a base end is located between the cover plate 59 and the indoor surface of the door 3. Along with the rotation operation member 66
A cover 47 slidably disposed in a direction perpendicular to the axis of the cover plate 59 and urged in one slide direction by an urging member 53 to close the operation hole 60 of the cover plate 59. Operation hole 6 of cover plate 59
0 and the operating member 8 to communicate with each other,
And an operation plate 31 having a through-hole portion 37 that allows the shaft portion 68 to pass therethrough.

A groove 73 is formed on the outer peripheral surface of the shaft portion of the rotary operation members 65 and 66 in a circumferential direction orthogonal to the axial direction, and a through hole 37 of the operation plate 31 is formed. An engaging portion 41 that engages with the concave groove 73 is formed at a part of the periphery of the concave portion, and the engaging state of the concave groove 73 and the engaging portion 41 is changed by the urging force of the urging member 53. It may be configured to hold.

With such a configuration, the locking and unlocking device 1 is
In normal use, locking and unlocking are performed by rotating the rotating operation members 65 and 66. Then, by removing the rotary operation members 65 and 66, the operation such as unlocking becomes impossible from the indoor side. As a result, the unlocking operation by illegally reaching the hand by breaking the glass from the outside or the like becomes impossible, and it becomes possible to prevent an intruder from entering.

In particular, in order to perform the operation using the rotating operation members 65 and 66, both hands are required, that is, the operation plate 31 is slid with one hand and the rotating operation members 65 and 66 are attached with the other hand. Since the operation is required, even if the intruder performs the rotation operation by one hand operation from the outside, if the operation is not performed from the front to the lock portion from the indoor side, the inside of the lock box 7 is required. Connecting shaft part 1 arranged in
It is impossible to perform a rotating operation on the operation member 3 and / or the operating member 8, and the shielding portion 47 of the operation plate 31 shields the operation hole 60 and the connected portion 15 of the connection shaft portion 13. It is impossible to operate easily because
In order to perform the rotation operation, another operation of moving the shielding unit 47 is required, and from such a situation, a security effect that makes unauthorized unlocking impossible is obtained.

[0014]

1 is a schematic exploded perspective view showing an embodiment of a locking and unlocking device according to the present invention, and FIG. 2 is a side sectional view of the locking and unlocking device.

The locking / unlocking device 1 according to the present embodiment includes a cylinder lock 5 which is disposed on a door 3 such as an entrance door as an opening / closing body, and which is locked / unlocked with a key on the outdoor side of the door 3.
On the indoor side, a thumb turn 65 is provided as a rotary operation member capable of performing an unlocking operation in conjunction with the cylinder lock 5.
The locking and unlocking device 1 of the present invention includes a lock box 7, a cylinder lock 5,
The connection shaft portion 13, the operation plate 31, the cover plate 59, and the thumb turn 65 are roughly configured.

The lock box 7 is built, for example, at the end of the door 3,
A front plate (not shown) fixed to the lock box 7 is attached to the door 3 so as to be exposed at the front edge (front end face). A lock member (not shown) is built in the lock box 7. The lock member is operatively connected to an operating member 8 rotatably disposed in the lock box 7, and the cylinder lock 5 is operatively connected to the outdoor side of the operating member 8 and to the indoor side, which will be described later. The thumb lock 65 is linked to the lock box 7 by operating the cylinder lock 5 and the thumb lock 65, and slides with respect to the lock box 7.
It is designed to be moved back and forth from the front panel. That is, it is possible to lock and unlock the door frame. Here, description of a specific mechanism in the lock box 7 is omitted.

As the lock member, a guard bolt which is engaged with a guard arm attached to the door frame side and performs the same function as a door chain, a dead bolt which is a main locking means, and an arc-shaped movable locus. It includes a camadette that is drawn and protruded, a locking means that advances and retreats from the upper end surface or the lower end surface of the door, and engages with the door frame.

The cylinder lock 5 is provided on a pedestal unit 9 disposed on the outdoor surface at the door end. A key insertion opening is exposed to the outside, and a rotary shaft 11 rotated by key operation is provided inside the pedestal unit 9. Protrude into. And this rotating shaft 1
1 is operatively connected to an operating member 8 in a lock box 7. The locking / unlocking device 1 shown in FIG. 1 is a double-locking lock in which two cylinder locks 5 are arranged vertically, but may be a locking / unlocking device composed of one cylinder lock. .

As shown in FIG. 3, the connecting shaft portion 13 is a substantially shaft-shaped member. One end of the connecting shaft 13 is formed in a substantially cylindrical shape from the middle, and the other end is formed in a substantially cross shape. Columnar part 1 at one end
3a, a flange portion 14 is formed on the outer peripheral edge of the distal end, and a fitting hole 15 as a connected portion is formed on an end surface. The fitting hole 15 in the present embodiment is formed in a substantially cross shape as shown in FIG. On the other end 13b side, a ridge-shaped protrusion is formed in the axial direction, and a connecting portion 17 that is continuous in a substantially cross-sectional shape is formed. In the connecting shaft portion 13 of this embodiment, a columnar portion 13a at one end side is formed with a through hole having a substantially cross-shaped cross section in the axial direction. It is obtained by fitting a cross-shaped member and fixing it to a cylindrical member. And this connecting shaft portion 1
3 is rotatably attached to the base plate 19.

The base plate 19 is a substantially plate-shaped member corresponding to the pedestal unit 9 and is disposed on the indoor surface of the door 3. As shown in FIG. 4, the base plate 19 has a concave portion 21 substantially at the center of the indoor side surface. At substantially the center of the concave portion 21, a mounting hole 23 is formed penetrating the plate surface, and a cylindrical support portion 24 protrudes from the back surface of the base plate 19. The mounting shaft 23 is provided in the mounting hole 23.
Is attached. The connecting shaft 13 is provided with a mounting hole 23.
The columnar portion 13a at one end is supported and is rotatable, and the connecting portion 17 at the other end projects to the back side of the base plate 19, and the fitting hole 15 at one end is Are exposed in the base plate recess 21.

When the base plate 19 is mounted on the indoor surface of the door, as shown in FIG. 2, the mounting hole 23 is coaxial with the axis of the cylinder lock 5 and protrudes from the rear surface of the base plate 19. The connection part 17 of the part 13 is the lock box 7 described above.
And is engaged with and interlocked with the operating member 8 in the lock box 7.

In the base plate 19, a groove 25 extending continuously to the lower end is formed at the center of the concave portion 21. At the center of the groove 25, a narrower and vertically formed predetermined length is formed. Guide groove 27 is formed. An operation plate 31 described later is attached to the groove 25. Mounting legs 19a and 19b are vertically provided on the back surface of the base plate 19, respectively.
A fixing member 20 such as a screw that penetrates through the door 3 from the surface of the base 9 and is screwed to the pedestal unit 9 penetrates.

As shown in FIG. 5, the operation plate 31 is formed in a substantially strip shape that is long vertically and in the present embodiment, is composed of a slide portion 33 and an operation knob 35. The left and right sides of the slide portion 33 are bent to form a substantially U-shape, and are formed to have substantially the same width as the groove portion 25 of the base portion 19. In addition, a through-hole portion 37 is formed in an upper halfway portion,
An engagement hole 39 is drilled below.

The upper through-hole portion 37 has a so-called daruma hole shape in which the small diameter hole and the large diameter hole have their respective center points shifted up and down by a predetermined length, and the left and right sides are formed in a substantially rectangular shape. It has a resected shape. The small diameter portion of the upper half portion is formed in an arc shape having substantially the same diameter as the outer diameter of the concave groove 73 formed in the shaft portion 67 of the thumb turn 65 described later, and the large diameter portion of the lower half portion is formed in the shaft portion of the thumb turn 65 described later. 67 is formed in an arc shape having substantially the same diameter as or slightly larger than the outer diameter. In this embodiment, the through-hole 37 has a vertical shift of the center point substantially equal to the radial length of the upper small-diameter hole, and the small-diameter hole has a semicircular peripheral portion. And the peripheral portion is
It is set to 1.

Further, a slit-like hole 43 extending downward is formed continuously at the lower center of the semicircular edge of the lower large-diameter hole. A spring support piece 45 is provided at the lower end of the slit-shaped hole 43 so as to protrude in the direction of the back surface of the slide portion 33, and a guide projection 46 is formed below the spring support piece 45 so as to protrude on the back surface. ing. The spring support pieces 45 and the guide projections 46 are inserted into the guide grooves 27 formed in the base plate 19.

The slide portion 33 above the through hole 37
The upper end portion of the base plate 19 has a plate surface serving as a shielding portion 47, and has a size having an area for sufficiently covering the mounting hole 23 of the base plate 19 described above.

An engagement hole 39 formed below the slide portion 33 is formed in a substantially rectangular shape, and a pair of engagement claws 49 of the operation knob 35 is fitted therein. At the lower end of the slide portion 33, an engagement step portion 50 is formed as a pair on both sides.

The operation knob 35 has a substantially rectangular box shape with an open back surface, a projection 51 formed on the lower edge surface side, and a pair of engaging claws 49 protruding from the upper end edge. Inwardly protruding engagement pieces 52 are formed on both sides (see FIG. 8). The operation knob 35 engages each engagement claw 49 with the engagement hole 39 from the rear surface at the lower end of the slide portion 33 and also engages each engagement piece 52 with the engagement step 50.
It is attached in contact with.

The operation plate 31 is connected to the base plate 19
And is slidable vertically with respect to the base plate 19 along the groove 25. When the operation plate 31 is mounted on the base plate 19, the operation plate 3
Each of the first spring support piece 45 and the guide convex portion 46 is located in the guide groove 27 of the base plate 19, and the guide groove 2
A biasing spring 53 composed of a compression coil spring as a biasing member is mounted between the lower edge 23 a of the base plate 19 forming the mounting hole 23 of the base plate 19 and the spring support piece 45 of the operation plate 31. . That is, the operation plate 31 is constantly urged downward with respect to the base plate 19. The operation plate 31 is attached such that the operation knob 35 at the lower end projects downward from the base plate 19.

Then, the holding plate 55 is fitted in the concave portion 21 on the base plate 19 on which the operation plate 31 is mounted, and is attached by a fixing member such as a screw. That is, the operation plate 31 is located between the pressing plate 55 and the base plate 19, and is slidable up and down. The operation of the vertical slide is performed by the operation knob 35 at the lower end, and the stroke of the slide movement is determined by the guide groove 2 of the base plate 19.
7 is a moving range of the spring support piece 45 of the operation plate 31 that slides in the guide groove 27. The mounting hole 23 is
7 is set to a position from the shielding position to a position where the mounting hole 23 and the lower large diameter portion of the through hole 37 coincide with each other.

As shown in FIG. 1, the holding plate 55 has a rectangular plate shape, and has a through hole 57 formed from the upper center.
The through-hole 57 corresponds to the mounting hole 23 of the base 19, is formed with an inner diameter substantially the same as that of the mounting hole 23, and is disposed on a coaxial line.

The cover plate 59 is a decorative plate material exposed on the indoor side of the door 3 and is a so-called escation. The cover plate 59 is attached to the base plate 19 by being fitted to the surface side thereof, and is attached so as to cover the surface side of the base plate 19. As shown in FIG.
An operation hole 60 is formed substantially at the center of 9. The operation hole 60 is formed slightly larger in diameter than the through hole 57 of the holding plate 55, and is attached to the base plate 19 corresponding to the through hole 57. On the lower edge of the cover plate 59, a pair of left and right substantially square supporting protrusions 61 are integrally formed so as to protrude. As shown in FIG. 8B, these support projections 61
It is located on the left and right of the operation knob 35 of the operation plate 31.

Next, as shown in FIG. 7, the thumb turn 65 includes a shaft 67 and a knob 69 serving as a grip provided at a base end of the shaft 67. The shaft 67
It is formed in a substantially columnar shape, and a connecting projection 71 as a connecting portion having a predetermined shape is formed at the tip thereof. The connecting projection 71 of the present embodiment is formed in a substantially rectangular flat plate shape, and can be fitted into the fitting hole 15 of the connecting shaft 13 described above. In addition, a concave groove 73 is formed on the outer peripheral surface of the halfway portion of the shaft portion 67 in a circumferential direction orthogonal to the axial direction, that is, formed with a diameter smaller than the outer diameter of the shaft portion.

The shaft 67 of the thumb turn 65
Are connected to the operation hole 60 of the cover plate 59, the through hole 57 of the holding plate 55, the through hole 37 of the operation plate 33, and the connection shaft portion 13 attached to the attachment hole 23 of the base plate 19. The connecting projection 71 at the tip fits into the fitting hole 15 of the above.

Next, the operation of the locking and unlocking device 1 configured as described above will be described. The normal use state is shown in FIG.
As shown in (b), the thumb turn 65 is mounted on the indoor side of the door 3, and locking and unlocking are performed indoors by rotating the thumb turn 65.

That is, when the thumb turn 65 is rotated in one direction by a predetermined angle, for example, 90 °, the connection shaft 13 rotates together with the thumb turn 65, and the operating member 8 in the lock box 7 is rotated to lock the lock member. Is slid with respect to the lock box 7, is advanced from the front plate of the door 3 to lock the door frame, and the thumb turn 65 is rotated in the opposite direction by a predetermined angle (90 °) to lock. The member is retracted to unlock.

In this normal state, the thumb turn 65 is
The connecting projection 71 at the tip of the shaft portion 67 is fitted into the fitting hole 15 of the connecting shaft portion 13 to be in an interlocking connection state, and the concave groove 73 in the middle of the shaft portion 67 is formed in the through hole 37 of the operation plate 31. The engagement with the engagement portion 41 is established. At this time, the operating state of the operation plate 31 is maintained by the urging force of the urging spring 53, and the thumb turn 65 cannot be withdrawn in the axial direction, and can be rotated only.

Next, when the security state is set, first, the operating knob 35 of the operating plate 31 is pushed by one hand with the urging spring 53.
9 is slid upward against the urging force of FIG.
(Refer to (a)), the engagement between the concave groove 73 of the thumb turn shaft 67 and the engaging portion 41 is released. The sliding operation plate 31
The lower large diameter portion of the through hole 37 rises, that is, as shown in FIG.
As shown in (b), the shaft 67 of the thumb turn 65 is a hole through which it can pass. As a result, the thumb turn 65 can be pulled out and pulled out in the axial direction with the other hand, whereby the fitting state with the connecting shaft portion 13 is released and removed.

After the thumb turn 65 is removed, when one hand holding the operation knob 35 is released, the operation plate 31 slides downward by the urging force of the urging spring 53. The operation plate 31 is stopped by the spring support piece 45 descending to the lower end of the guide groove 27. When the operation plate 31 stops, the shielding portion 47 of the operation plate 31 is moved to the operation hole 6 of the cover plate 59.
10, that is, as shown in FIGS. 10A and 10B, the hole for fitting the shaft 67 of the thumb turn 65 is closed, and the fitting hole 15 of the connecting shaft 13 is shielded. As a result, the thumb turn 65 is not attached to the door from the indoor side, and the operation of locking and unlocking becomes impossible.

In order to attach the thumb turn 65,
First, the operation knob 35 of the operation plate 31 is slid upward with one hand, and the through hole 37 of the operation plate 31 is made to correspond to the operation hole 60 of the cover plate 59. At this time, the through hole 3
The lower large-diameter portion 7 is located in the operation hole 60. Next, the shaft 67 of the thumb turn 65 is inserted into the operation hole 60 with the other hand. Then, the connecting projection 71 at the tip of the shaft is connected to the connecting shaft 13.
Into the fitting holes 15 of When one hand is released from the operation knob 35, the operation plate 31 is urged downward by the urging force of the urging spring 53, and the engaging portion 41 of the through hole 37 is inserted into the concave groove 73 of the thumb turn shaft 67. Engagement makes the thumb turn 65 immovable (see FIG. 8).

Therefore, according to the locking / unlocking device 1 having such a configuration, in normal use, the thumb turn 64 is rotatably mounted on the indoor surface of the door 3, and the locking and unlocking operation is performed by the rotating operation. Locking is done. Then, when the engagement state of the operation plate 31 with the engagement portion 41 is released and the thumb turn 65 is removed, the operation such as unlocking becomes impossible from the indoor side. As a result, the unlocking operation by illegally reaching the hand by breaking the glass from the outside or the like becomes impossible, and it becomes possible to prevent an intruder from entering.

In particular, in order to perform the operation using the thumb turn 65, it is necessary to perform an operation requiring both hands, such as sliding the operation plate 31 with one hand and attaching the thumb turn 65 with the other hand. Even if the intruder performs the same rotation operation as the thumb turn by one-handed operation from outside, the intruder is arranged in the lock box 7 unless the intruder operates the lock portion from the front from the indoor side. It is impossible to perform a rotating operation on the connecting shaft 13 and the operating member 8, and the shielding portion 47 of the operation plate 31 shields the fitting hole 15 of the connecting shaft 13. Therefore, it is impossible to easily operate the connecting shaft 13 and the connecting shaft 1
In order to perform the operation for the third item, another operation of moving the shielding portion 47 is required, and from such a situation, it is possible to obtain a crime prevention effect that unauthorized unlocking is impossible.

In the above-described embodiment, the thumb turn 65 and the connection shaft portion 13 fitted to the connection projection 71 of the thumb turn 65 and connected to the operating member 8 in the lock box 7 are provided. Although the example has been described, as shown in FIG. 11, the shaft portion 68 of the thumb turn 66 is formed to be long, and the connecting convex portion 71 formed at the tip projects into the lock box 7 as shown in FIG. The connecting protrusion 71 may be directly fitted to the operating member 8 that moves the lock member forward and backward. In this case, the rotation operation cannot be performed unless the thumb turn 66 has the shaft portion 68 having a length sufficient to reach the operation member 8 in the lock box 7 or the rotation operation member having another structure having the shaft portion. It is possible to obtain the effect of improving the crime prevention property that the unlocking operation cannot be easily performed.

In the above-described embodiment, the connected portion formed on the connecting shaft 13 is the fitting hole 15, and the connecting portion of the thumb turn 65 as the rotation operating member is the connecting projection 71, and the fitting is performed. Although the example in which the parts are combined has been described, the shapes of the connected part and the connecting part are not limited to this, and any structure may be used in which the parts are detachable in the axial direction and the rotation is transmitted. For example, the connecting portion may be formed in a convex shape and the connecting portion may be formed in a concave groove shape.

Further, in the above-described embodiment, the rotation operation member is configured as the thumb turn 65, and the locking and unlocking is performed by attaching the thumb turn 65. Any other configuration may be used as long as it has a connection portion. For example, when the thumb turn 65 is lost or when the thumb turn cannot be used, as shown in FIG. A tool 81 having a gripping portion such as a screwdriver as shown, and having a tip formed in a predetermined shape.
13A and 13B using a key 83 used for the cylinder lock 5 used outdoors as shown in FIG.
Of the tool 81 and the key 83 with the fitting hole 15
And the rotating operation may be performed. An example of using such a tool 81 is the above-described connecting shaft 1.
The rotation operation can be performed as shown in FIG. Furthermore, as this rotation operation member,
For example, a coin may be used. Even when using these rotary operation members, the operation plate 31 is slid and moved to expose the fitting hole (connected portion) 15 to perform the operation.

[0046]

As described above, in the locking / unlocking device according to the present invention, during normal use, the rotating operation member is rotatably mounted on the indoor surface of the door, and the locking and unlocking is performed by the rotating operation. Locking is done. Then, if the rotary operation member is pulled out, operation such as unlocking of the door from the indoor side becomes impossible. As a result, the unlocking operation by illegally reaching the hand by breaking the glass from the outside or the like becomes impossible, and it becomes possible to prevent an intruder from entering.

In particular, in order to perform an operation using the rotary operation member, it is necessary to perform an operation requiring both hands, in which the operation plate is slid with one hand and the rotary operation member is attached with the other hand. Even if the intruder performs the same operation with one hand from the outside, if the user does not operate the lock part from the front from the indoor side, the connection arranged in the lock box It is impossible to perform a rotating operation on the shaft portion or the operating member, and since the shielding portion of the operation plate shields the connected portion or the operating member of these connecting shaft portions, it is easy to perform. It is impossible to operate them, and in order to operate these connecting shafts or operating members, another operation of moving the shielding unit is required. Prevention of unlocking An effect is obtained.

Further, by providing the engagement portion on the operation plate and providing the groove on the shaft portion of the rotary operation member, it is impossible to withdraw in the axial direction when the rotary operation member is mounted. Thus, only the rotation direction can be set, so that the locking and unlocking operation from the indoor side by the rotary operation member can be performed without any trouble during normal use.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a locking and unlocking device according to the present invention.

FIG. 2 is a side view showing the locking and unlocking device.

FIG. 3 is a perspective view showing a connecting shaft portion constituting the locking and unlocking device.

FIG. 4 is a perspective view showing the base plate.

FIG. 5 is an exploded perspective view showing the operation plate.

FIG. 6 is a perspective view showing the cover plate.

FIG. 7 is a perspective view showing the rotary operation member (thumb turn).

FIG. 8 is a side sectional view showing the operation of the locking and unlocking device.

FIG. 9 is a side sectional view showing the operation of the locking and unlocking device.

FIG. 10 is a side sectional view showing the operation of the locking and unlocking device.

FIG. 11 is a side view showing a rotation operation member (thumb turn) according to another embodiment.

FIG. 12 is a side sectional view showing a locking / unlocking device according to another embodiment.

FIG. 13 is a partial side view of a locking / unlocking device showing another embodiment.

FIG. 14 is a partial side view of a locking / unlocking device showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Locking / unlocking device 3 ... Door 5 ... Cylinder lock 7 ... Lock box 8 ... Actuating member 13 ... Connection shaft part 15 ... Connected part (fitting hole) 31 ... Operation plate 37 ... Through-hole part 41 ... Engagement part 47 ... Shielding part 53... Urging member (urging spring) 59... Cover plate 60... Operating hole 65, 66... Rotating operation member (thumb turn) 67, 68. 73 ... concave groove

Claims (4)

[Claims] 1. A locking / unlocking device, comprising: a cylinder lock on the outdoor side of a door, which is locked and unlocked by a key; and a rotary operation member on the indoor side, which can perform a locking and unlocking operation in conjunction with the cylinder lock. A cover plate provided on an indoor surface and having an operation hole formed therein, and an operating member located on the indoor side of the door and linked to the cylinder lock and moving a lock member from the door end surface in the lock box in the lock box. And a connecting shaft portion rotatably and interlockingly connected to the connecting shaft portion, the connecting shaft portion having a connected portion formed on the indoor side end surface, penetrating through the operation hole of the cover plate, and fitting with the connected portion of the connecting shaft portion. A rotating operation member having a connecting portion of a predetermined shape to be coupled and interlockingly connected, located between the cover plate and the connected portion of the connecting shaft portion, and slidably movable along the indoor surface of the door. And one of the slides A rotation portion that is urged in the direction, closes an operation hole of the cover plate, and shields a connected portion of the connection shaft portion, and communicates the operation hole of the cover plate with the connected portion. And an operation plate having a through-hole for making the connecting part of the locking part penetrate. 2. A locking / unlocking device comprising: a cylinder lock on the outdoor side of a door, which is locked and unlocked by a key; and a rotary operation member on the indoor side, which can perform a locking and unlocking operation in conjunction with the cylinder lock. A cover plate provided on an indoor surface and having an operation hole formed therein, and an operating member located on the indoor side of the door and linked to the cylinder lock and moving a lock member from the door end surface in the lock box in the lock box. And a rotatable interlocking connection, a connection shaft portion having a connected portion formed on the indoor side end surface, and a shaft portion penetrating the operation hole of the cover plate, and a tip of the shaft portion. A rotation operating member having a predetermined shape that is fitted and interlockedly connected to the connected portion of the connection shaft portion and is provided with a grip portion at a base end; and a connection between the cover plate and the connection shaft portion. Section along the indoor surface of the door The operation member is slidably disposed in a direction perpendicular to the axis of the operation member, and is urged in one slide direction by an urging member to close the operation hole of the cover plate and to connect the connected portion of the connection shaft portion. An operation plate having a shielding portion for shielding, and having a through-hole portion that communicates the operation hole of the cover plate with the connected portion to make a shaft portion of the rotation operation member penetrate. Locking and unlocking device. 3. A locking / unlocking device, comprising: a cylinder lock on the outdoor side of the door, which can be locked and unlocked by a key; and a rotary operation member on the indoor side, which can perform a locking and unlocking operation in conjunction with the cylinder lock. A cover plate provided on the indoor surface and having an operation hole formed therein, and a shaft portion penetrating the operation hole of the cover plate and projecting into a lock box in the door, and at a tip of the shaft portion, A rotary operation in which a predetermined-shaped connecting portion is formed which is interlockedly connected to the cylinder lock and is engaged with and interlockedly connected to an operating member for moving a lock member forward and backward from the door end surface in the lock box, and a grip portion is provided at a base end; A member, located between the cover plate and the indoor surface of the door, disposed along the indoor surface so as to be slidable in a direction orthogonal to the axis of the rotary operation member, and by an urging member. Biased in one sliding direction, An operation plate having a shielding portion that closes the operation hole of the bar plate, and having a through-hole portion that communicates the operation hole of the cover plate with the operating member and makes a shaft portion of the rotary operation member penetrate. Locking and unlocking device. 4. A concave groove is formed on a middle outer peripheral surface of a shaft portion of the rotary operation member in a circumferential direction orthogonal to an axial direction, and a part of a peripheral edge of a through hole of the operation plate is formed. An engaging portion for engaging with the concave groove is formed, and an engaging state between the concave groove and the engaging portion is held by an urging force of the urging member. 3. The locking and unlocking device according to 3.