JP5937742B1 - Lock opening and closing device - Google Patents

Abstract

The door can be locked and unlocked not only remotely but also manually, and the thumb turn can be prevented. A lock opening and closing device 10 is controlled by remote operation by a casing 11 attached to a door, a rotating part 19 that houses a thumb turn, rotates the thumb turn, and locks and unlocks the door. A driving unit 18 that supplies power to the rotating unit 19 and a substantially cylindrical operating unit 12 that is connected to the rotating unit 19 and can be rotated with respect to the housing 11, and is rotated with respect to the housing 11. Thus, the operation unit 12 is provided that rotates the rotation unit 19 in the rotation direction of the thumb turn. [Selection] Figure 2

Description

  The present invention relates to a lock opening / closing device that enables locking and unlocking of a door provided with a thumb turn by remote control.

  2. Description of the Related Art Conventionally, there is known a lock opening / closing device that can be attached to a thumb turn portion of a door while leaving an existing lock and can be locked and unlocked by operating the thumb turn by remote control.

  Some lock opening / closing devices of this type cannot be operated manually on the spot, but they lack convenience in terms of operability. On the other hand, Patent Document 1 discloses a lock opening / closing device that is configured to be able to directly operate the thumb-turn by providing a thumb-turn-like knob portion and manually operating the knob portion in a remotely operated lock opening / closing device. Is disclosed. Thereby, the user can lock and unlock the door not only remotely but also manually.

Japanese Patent No. 5686269

  However, since the knob portion of the lock opening / closing device described in Patent Document 1 has the same shape as the thumb turn, an incorrect answer can be obtained by inserting a wire or a tool into the gap between the door and its frame or a hole opened in the door. There is a risk of so-called “thumb turn” damage.

  The present invention has been made in view of such circumstances, and provides a lock opening and closing device that enables locking and unlocking of a door not only by remote operation but also by manual operation and preventing rotation of a thumb turn. One of the purposes.

  A lock opening and closing device according to one aspect of the present invention is a lock opening and closing device that enables locking and unlocking of a door provided with a thumb turn by remote operation, and accommodates a housing and the thumb turn, and rotates the thumb turn. A rotary unit that locks and unlocks the door, a drive unit that is engaged with the rotary unit and that is controlled by remote operation and that powers the rotary unit, and is connected to the rotary unit to rotate the housing. A substantially cylindrical operation unit that is capable of rotating the rotation unit in the rotation direction of the thumb turn by being rotated with respect to the housing.

  According to the above configuration, the door can be locked and unlocked not only remotely but also manually, and the thumb turn can be prevented.

FIG. 1 is a schematic diagram illustrating an example of a lock opening / closing system to which a lock opening / closing device according to an embodiment of the present invention is applied. FIG. 2 is a perspective view of a lock opening and closing device according to the present embodiment and a door having a thumb turn. FIG. 3 is a side sectional view of the lock opening and closing device according to the present embodiment. FIG. 4 is a perspective view of the sandwiching body and the mounting body when the sandwiching body of the lock opening / closing device shown in FIG. 3 is separated from the mounting body. FIG. 5 is a perspective view of the sandwiching body and the attachment body when the sandwiching body of the lock opening / closing device shown in FIG. 3 is attached to the attachment body. 6 is a back view of the sandwiched body shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  A lock opening and closing device according to an embodiment of the present invention is applied to, for example, a lock opening and closing system 1 shown in FIG.

<Outline of the lock opening and closing system>
As shown in FIG. 1, the lock opening / closing system 1 includes a terminal 20 and a server 30 in addition to the lock opening / closing device 10 according to the present embodiment.

  The lock opening / closing device 10 is attached to a door 40 provided with a thumb turn 400. The lock opening / closing device 10 is configured to be capable of bidirectional communication with the terminal 20 by wireless communication such as Bluetooth (registered trademark). By remotely operating the lock opening / closing device 10 from the terminal 20, the rotation operation of the thumb turn 400 is controlled, and the door 40 can be locked and unlocked. The lock opening / closing device 10 may be capable of bidirectional communication with the server 30 via a network 50 such as the Internet.

  The terminal 20 is a device used by a user who locks and unlocks the door 40. As the terminal 20, for example, any terminal device that can exchange data with the lock opening / closing device 10 by wireless communication, such as a smartphone, a mobile phone, a personal digital assistant (PDA), a tablet terminal, a personal computer (PC), and a notebook PC. Can be used.

  The server 30 is configured by, for example, a computer having high arithmetic processing capability, and a server function is realized by a predetermined server program operating on the computer. In the server 30, for example, authority authentication for remote operation of the lock opening / closing device 10 by the terminal 20 is performed.

  In addition, when using the lock opening / closing apparatus 10 by remote operation, it is not essential to use the server 30. The lock opening / closing device 10 can lock and unlock the door 40 by communicating with the terminal 20. At this time, the door 40 is locked and unlocked, for example, as follows.

  In response to the user operating the terminal 20 to instruct locking / unlocking of the lock opening / closing device 10, the terminal 20 sends a remote operation command for instructing locking / unlocking by wireless communication to the lock opening / closing device 10. Send to. When receiving the remote operation command, the lock opening / closing device 10 automatically operates the thumb turn 400 based on the remote operation command to lock or unlock the door 40.

<Configuration of the lock opening / closing device 10>
Next, the configuration of the lock opening / closing device 10 will be described.

  FIG. 2 is a perspective view of the lock opening / closing device 10 according to the present embodiment and a door having a thumb turn. As shown in FIG. 1, the lock opening / closing device 10 includes a housing 11. The housing 11 has a substantially inverted L shape when viewed from the side, for example. The housing 11 has a first part 110 that is an upper part and a second part 111 that is a lower part when the lock opening / closing device 10 is attached to the door 40. Note that the one part 110 may be the lower part and the other part 111 may be the upper part. In this specification, the operation unit 12 side of the housing 11 is referred to as a front surface, and the rotation unit 19 side is referred to as a back surface.

  When the lock opening / closing device 10 is attached to the door 40, the back surface of the one portion 110 of the housing 11 is fixed to the door 40. For example, a magnet may be disposed on the back surface of the one portion 110 and may be fixed to the door 40 so as to be removable, or may be fixed to the door 40 with an adhesive or the like. The lock opening / closing device 10 is attached to a position where the thumb turn 400 is accommodated between the other portion 111 and the door 40. At this time, the back surface of the other portion 111 of the lock opening / closing device 10 is spaced apart from the door 40 and the rectangular knob 401 of the thumb turn 400 is inserted into the rotating portion 19. In FIG. 2, the lock opening / closing device 10 and the thumb turn 400 are illustrated in different scales, but actually, as shown in FIG. 1, the lock opening / closing device 10 can accommodate the thumb turn 400. Any size is acceptable. In the following description, the knob 401 may be collectively referred to as a thumb turn 400 as appropriate.

  FIG. 3 is a side sectional view of the lock opening and closing device according to the present embodiment. As shown in the figure, a bottomed first opening 112 is provided on the surface of the other portion 111. A second opening 113 that communicates with the inside of the housing 11 is provided at the center of the bottom of the first opening 112. A third opening 114 that communicates with the inside of the housing 11 is provided on the back surface of the other part 111 that faces the second opening 113.

  The operation portion 12 is fitted into the first opening 112 so as to be rotatable with respect to the housing 11. A rotating portion 19 is disposed in the third opening 114 so as to be rotatable with respect to the housing 11. The rotating unit 19 is connected to the operation unit 12 via the second opening 113. Further, a part of the rotating unit 19 extends to the outside of the housing 11.

  Returning to FIG. 2, the shape of the operation unit 12 is a substantially cylindrical shape protruding from the surface of the housing. The diameter of the operation unit 12 is designed to be approximately the same size as the thumbturn 400 so that the user can grasp the peripheral side surface of the operation unit 12 with a finger of one hand, for example. In addition, a plurality of hollow portions 120 are provided on the circumferential side surface of the operation unit 12 along the circumferential direction so that the user can easily grip the operation side.

  Further, as shown in FIG. 3, one end surface 121 of the projecting portion of the operation unit 12 is closed and flattened, and the other end surface 122 is opened.

  A part of the rotating unit 19 (for example, a rotating shaft 190 described later) extending from the second opening 113 is fitted into the operation unit 12 from the other end surface 122. Thereby, the operation part 12 and the rotation part 19 are connected, and when the peripheral side surface of the operation part 12 is picked and rotated, the rotation part 19 also rotates in conjunction with this. At this time, at least a part of the rotation unit 19 is brought into contact with the thumb turn 400 and the rotation of the rotation unit 19 is transmitted to the thumb turn 400, whereby the thumb turn 400 is rotated in the rotation direction of the operation unit 12. That is, by providing the operation unit 12, the thumb turn 400 can be manually moved, so that the door 40 can be locked and unlocked.

  In addition to the operation unit 12 and the rotation unit 19, the housing 11 of the lock opening / closing device 10 includes a power supply unit 13, a reception unit 14, a transmission unit 15, a control unit 16, a substrate 17, and a drive unit 18. Is provided.

  The power supply unit 13 includes one or a plurality of batteries. The power supply unit 13 supplies power to the reception unit 14, the transmission unit 15, the control unit 16, and the drive unit 18.

  The receiving unit 14 has a receiving antenna. The receiving unit 14 has a function of receiving, for example, a remote operation command for instructing locking and unlocking of the door 40 from the terminal 20.

  The transmission unit 15 has a transmission antenna. Of course, there is no transmitting antenna, and a receiving antenna may also be used. The transmission unit 15 has a function of transmitting an execution result of the remote operation command by the control unit 16.

  The control unit 16 includes a processor and a memory in which a program executed by the processor is stored. When the receiving unit 14 receives a remote operation command, the control unit 16 executes a predetermined process corresponding to the received remote operation command. That is, the control unit 16 controls the operation of the driving unit 18 and the direction of rotation based on the remote operation command to rotate the rotating unit 19 in the direction in which the thumb turn 400 is locked or unlocked.

  The substrate 17 is for providing, for example, the drive unit 18 and the rotation unit 19. The substrate 17 is provided with an opening 170 for penetrating a part of the driving unit 18 and an opening 171 for penetrating a part of the rotating unit 19.

  The drive unit 18 is engaged with the rotating unit 19 via a gear or a clutch, and has a function of supplying power to the rotating unit 19. The operation of the drive unit 18 is controlled by the control unit 16.

  The drive unit 18 includes a drive source 180 and a rotation shaft 181.

  The drive source 180 is, for example, a motor that is connected to the power supply unit 13 and the control unit 16 and to which a rotating shaft 181 is attached. The drive source 180 is attached to the back surface of the substrate 17, for example. The drive source 180 is controlled and rotated by the control unit 16 by remote operation, and rotates the rotary shaft 181.

  The rotating shaft 181 passes through the opening 170 and extends to the surface side of the substrate 17. A gear 182 is attached to the rotating shaft 181. The gear 182 is rotated with the rotation of the drive source 180 under the control of the control unit 16.

  The rotating part 19 is provided so as to be rotatable around the central axis O with respect to the housing 11. Further, when the lock opening / closing device 10 is attached to the door 40, the rotating unit 19 accommodates the thumb turn 400. And the rotation part 19 rotates the thumb turn 400, when it rotates with respect to the housing | casing 11, and locks and unlocks the door 40. FIG.

  The rotating part 19 includes a rotating shaft body 190, an intermediate part 191, a mounting body 192, and a sandwiching body 193.

  The rotary shaft 190 is a long shaft along the direction of the central axis O. Hereinafter, this “direction of the central axis O” is referred to as “axis O direction”. One end of the rotating shaft 190 is inserted into the operation unit 12 from the other end surface 122 of the operation unit 12. The other end of the rotating shaft 190 extends to the outside of the housing 11 through the opening 171 and the third opening 114.

  The intermediate portion 191 is provided between the operation portion 12 and the attachment body 192. The intermediate part 191 is composed of one or a plurality of disk-shaped members. The detailed description of the configuration of the intermediate unit 191 is omitted.

  The attachment body 192 is fixed to the operation unit 12 and the sandwiching body 193 is attached thereto. The mounting body 192 includes a pedestal 192A, a cylindrical portion 192B, and mounting legs 192C.

  The pedestal 192 </ b> A is accommodated in the housing 11. The pedestal 192 </ b> A is placed on the substrate 17 with the center of the pedestal 192 </ b> A facing the opening 171 of the substrate 17.

  4 and 5 are perspective views of the attachment body 192 and the sandwiching body 193 that constitute the rotating portion 19. FIG. 4 is a perspective view when the sandwiching body 193 of the lock opening / closing device 10 is separated from the attachment body 192, and FIG. 5 is a perspective view when the sandwiching body 193 is attached to the attachment body 192. As shown in FIG. 4, the shape of the base 192 </ b> A is a gear shape. The teeth of the gear 182 of the driving unit are meshed directly or indirectly with the teeth 192D of the base 192A, and the rotating unit 19 including the attachment body 192 is rotated by the rotation of the driving unit 18. Yes.

  Returning to FIG. 3, the cylindrical portion 192B is provided at the center of the pedestal 192A. The cylindrical portion 192B extends linearly outward from the surface of the pedestal 192A. The extending portion of the cylindrical portion 192B is fitted inside the operation portion 12 with the rotating shaft 190 inserted therein. Accordingly, the attachment body 192 is fixed to the operation unit 12.

  As shown in FIG. 4, four mounting legs 192C are provided on the back surface of the pedestal 192A. The shape of each mounting leg 192C as viewed from the bottom is, for example, a fan shape. Each mounting leg 192C extends linearly outward from the back surface of the pedestal 192A. That is, as shown in FIG. 3, each mounting leg 192 </ b> C extends in a direction opposite to the operation unit 12 in the axis O direction.

  Each attachment leg 192 </ b> C extends to the outside of the housing 11 through the opening 171 and the third opening 114.

  As shown in FIGS. 4 and 5, each mounting leg 192 </ b> C has the outer periphery of the mounting body 192 sandwiched between the legs so that the mounting body 193 is slidably attached to the mounting body 192 in the axis O direction. Yes.

  A guide groove 192E formed along the direction of the axis O is provided inside each mounting leg 192C. A part of the outer periphery (a linear protrusion 193D described later) of the sandwiching body 193 is inserted into and engaged with the guide groove 192E. Thereby, the guide groove 192E guides the slide of the sandwiching body 193 in the direction of the axis O.

  Returning to FIG. 3, the sandwiching body 193 is provided on the back side of the housing 11 and sandwiches the thumb turn 400. The sandwiching body 193 includes a pedestal 193A, a sandwiching leg 193B, and a wall body 193C.

  As shown in FIG. 4, the pedestal 193 </ b> A is formed in a disk shape.

  Four sandwiching legs 193B are provided at the end of the back surface of the base 193A. The sandwiching legs 193B are arranged on the circumference of the pedestal 193A while being spaced apart from each other when a circle centered on the center of the pedestal 193A is drawn. At this time, for example, an interval between two adjacent sandwiching legs 193B out of four and an interval between the remaining two sandwiching legs 193B are substantially the same. Each sandwiching leg 193B extends linearly outward from the back surface of the pedestal 193A. That is, as shown in FIG. 3, each sandwiching leg 193 </ b> B extends in the direction opposite to the operation unit 12 with respect to the other part 111 of the housing 11 in the axis O direction.

  Returning to FIG. 4, a linear protrusion 193 </ b> D and a groove 193 </ b> E sandwiching the linear protrusion 193 </ b> D are formed inside each sandwiching leg 193 </ b> B, and the bottom view shape of the sandwiching leg 193 </ b> B is substantially W. It is made into a shape.

  The linear protrusion 193D extends from the front end of the sandwiching leg 193B along the axis O direction to the outside of the surface of the base 193A. As a result, when the sandwiching body 193 is attached to the attachment body 192 as shown by the dotted arrow in FIG. 4, first, the linear protrusion 193D is engaged with the guide groove 192E of the attachment body 192, and the sandwiching body 193 slides. Can be guided.

  Further, on the surface of the linear protrusion 193D, for example, a plurality of locking pieces 193F that can be pushed into the linear protrusion 193D are provided along the axis O direction. In FIG. 4, two locking pieces 193F are shown as an example. Any one of the plurality of locking pieces 193F is engaged with a locking groove (not shown) formed in the guide groove 192E. Thereby, it is suppressed that the clamping body 193 is slid carelessly with respect to the attachment body 192.

  The groove portion 193E extends to the pedestal 193A. As shown in FIG. 5, the inner surface of the sandwiching leg 193B is fitted into the bottom of the groove 193E.

  FIG. 6 is a rear view of the sandwiching body 193. As shown in the figure, two sandwiching grooves 200 and 201 are formed between the four sandwiching legs 193B.

  When the lock opening / closing device 10 is attached to the door 40, the thumb turn 400 is inserted into one of the two sandwiching grooves 200, 201 and sandwiched. The two sandwiching grooves 200 and 201 have different widths in which the thumb turn 400 is sandwiched. Specifically, the width W <b> 1 of one of the two sandwiching grooves 200, 201 is larger than the width W <b> 2 of the other sandwiching groove 201.

  The two sandwiching grooves 200 intersect with each other at the center, and are formed in a cross shape when viewed from the back side of the pedestal 193A (direction opposite to the operation unit 12).

  The wall body 193C connects the root portions of at least any two of the four sandwiching legs 193B adjacent to each other among the four sandwiching legs 193B. In this embodiment, the wall body 193C connects the bases of the sandwiching legs 193B facing each other across the other sandwiching groove 201, and makes a pair so as to face each other across the one sandwiching groove 200. Is formed.

  As described above, according to the present embodiment, by providing the lock opening / closing device 10 with the receiving unit 14, the control unit 16, and the driving unit 18, remote operation is possible. The lock opening / closing device 10 includes an operation unit 12 that can be rotated with respect to the housing 11. For example, the operation unit 12 protrudes from the surface of the housing 11 and rotates the rotation unit 19 in the rotation direction of the thumb turn 400 when operated. Thereby, the door 40 can be locked and unlocked not only remotely but also manually.

  Further, the shape of the operation unit 12 is a substantially cylindrical shape, and the one end surface 121 of the projecting tip is closed and flattened. Therefore, for example, even if a third party inserts a wire, a tool, or the like from the outside of the door 40 into a gap between the door 40 and its frame or a hole opened in the door 40, Since there is no hooking portion like the rectangular knob 401, it is difficult for the third party to turn the thumb turn 400. Therefore, in the present embodiment, it is possible to prevent thumb turn.

  The sandwiching body 193 may have a plurality of sandwiching grooves 200 and 201 having different widths in which the thumbturn 400 is sandwiched. For this reason, for example, it is possible to select the one of the two sandwiching grooves 200 and 201 that is more suitable for the knob width of the knob 401 of the thumbturn 400 as the groove in which the thumbturn 400 is sandwiched. Further, the height at which the sandwiching body 193 is installed may be arbitrarily adjusted by sliding the sandwiching body 193 in the axis O direction with respect to the attachment body 192. Accordingly, the thumb turn 400 having various sizes (width and height of the knob) can be handled by a single device without interposing an attachment or the like between the lock opening / closing device 10 and the thumb turn 400.

  Moreover, it can be set as the structure which provides the two clamping grooves 200 and 201 between the four clamping legs 193B. Thereby, the structure which can respond to the thumb turn 400 of various sizes can be formed with a simple structure, and the manufacturing cost can be suppressed. Further, the two sandwiching grooves 200 and 201 may be formed in a cross shape. The shape of the cross shape can reduce the size of the sandwiching body 193 as compared with the case where the sandwiching grooves 200 and 201 are formed separately, for example.

  Further, a wall body 193C that connects the two sandwiching legs may be provided at the root portion of any two sandwiching legs 193B adjacent to each other among the four sandwiching legs 193B. The wall body 193C constitutes a part of the side wall of one of the two sandwiching grooves 200 and 201. In addition, since the wall body 193C is provided at the base portion of the sandwiching leg 193B, the thumb turn 400 can still be sandwiched in the other of the two sandwiching grooves 200 and 201.

  Here, in the thumb turn 400, there is a security thumb turn in which a push button that allows the knob portion 401 to rotate by being pushed is provided on the knob surface of the knob portion 401. Even in such a crime prevention thumb turn, the lock opening and closing device 10 can be applied by the above configuration. Specifically, when the lock opening / closing device 10 is attached to the security thumb turn, the security thumb turn is inserted into the holding groove on the side provided with the wall body 193C, and the security thumb turn is sandwiched with the push button being pushed by the wall body 193C. As a result, even when the door 40 is locked and unlocked by remote control, for example, the push button is in the depressed state, so that the security thumb turn can be reliably rotated.

  Moreover, it is preferable that the width W1 of one clamping groove 200 is formed larger than the width W2 of the other clamping groove 201. Moreover, the wall body 193 </ b> C may be formed in a pair so as to constitute a part of the side wall of the wide sandwiching groove 200.

  Here, in some of the crime prevention thumb turns, push buttons are provided on the knob faces on both sides of the knob portion 401, respectively. In this case, the size of the knob 401 can be increased, but in such a case, the security thumb turn can be inserted into one of the sandwiching grooves 200 having a large width W1. And since a pair of wall body 193C has oppose on both sides of one clamping groove 200, each push button is pushed in reliably.

  Further, the attachment body 192 attaches the sandwiching body 193 so as to be slidable in the direction of the axis O. Thereby, it can respond to the thumb turn 400 of various height by sliding the clamping body 193. FIG. Further, when the thumb turn 400 is inserted into the other sandwiching groove 201, the wall body 193C may become an obstacle depending on the height of the thumb turn 400. Even in such a case, the thumb turn 400 can be reliably inserted into the other sandwiching groove 201 by sliding the sandwiching body 193 to the back side.

<Modification>
The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  For example, the attachment body 192 and the intermediate portion 191 can be omitted. In this case, the sandwiching body 193 is directly attached to the operation unit 12.

  Moreover, although the case where the two pinching grooves 200 and 201 were formed in the pinching body 193 was demonstrated, three or more pinching grooves may be formed. In this case, the number of sandwiching legs 193B corresponding to the number of sandwiching grooves is provided.

  In addition, the operation unit 12 and the rotation unit 19 have been described in the case where a part of the rotation unit 19 is fitted and connected to the inside of the operation unit 12 from the other end surface 122. The connection position and connection means are not particularly limited as long as they are partially connected. For example, the operating unit 12 and the rotating unit 19 may be connected by providing a gear on the peripheral side surface of the operating unit 12 and engaging the teeth 192D of the rotating unit 19 with the teeth of the gear.

DESCRIPTION OF SYMBOLS 10 ... Lock opening / closing device 11 ... Housing | casing 12 ... Operation part 18 ... Drive part 19 ... Rotation part 40 ... Door 192 ... Attachment body 193 ... Clamping body 193B ... Clamping leg 193C ... Wall body (1st wall body, 2nd Wall)
200, 201 ... sandwiching groove 400 ... thumb turn

Claims (4)

A lock opening and closing device that enables locking and unlocking of a door provided with a thumb turn by remote operation,
A housing,
A rotating part for accommodating the thumb turn and rotating the thumb turn to lock and unlock the door;
A driving unit that is engaged with the rotating unit and is controlled by remote operation, thereby supplying power to the rotating unit;
A substantially cylindrical operation unit connected to the rotation unit and capable of rotating with respect to the housing, wherein the rotation unit is rotated in the thumb turn direction by being rotated with respect to the housing. An operation unit to rotate,
Equipped with a,
The rotating part has a sandwiching body for sandwiching the thumb turn when the housing is attached to the door,
In the sandwich body, a plurality of sandwich grooves having different widths in which the thumb turn is sandwiched are formed.
Lock opening and closing device.   A lock opening and closing device that enables locking and unlocking of a door provided with a thumb turn by remote operation,
  A housing,
  A rotating part for accommodating the thumb turn and rotating the thumb turn to lock and unlock the door;
  A driving unit that is engaged with the rotating unit and is controlled by remote operation, thereby supplying power to the rotating unit;
  A substantially cylindrical operation unit connected to the rotation unit and capable of rotating with respect to the housing, wherein the rotation unit is rotated in the thumb turn direction by being rotated with respect to the housing. An operation unit to rotate,
  With
  The rotating part is connected to a sandwiching body for sandwiching the thumb turn when the housing is attached to the door, and is connected to the operation unit, and the sandwiching body is slidable in the axial direction of rotation of the rotating part. An attachment body that can be attached to,
  Lock opening and closing device. The sandwiching body is provided with four sandwiching legs extending in a direction opposite to the operation unit with respect to the housing in the axial direction of rotation of the rotating unit,
Between the four sandwiching legs, two sandwiching grooves are formed in a cross shape as the plurality of sandwiching grooves.
The lock opening and closing device according to claim 1 or 2 . A wall body connecting the two sandwiching legs is provided at a base portion of at least two sandwiching legs adjacent to each other among the four sandwiching legs.
The lock opening and closing device according to claim 3 .

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