JP6511822B2 - Latch device and electric lock system - Google Patents

Description

  The present invention relates to a latch device and an electric lock system.

  BACKGROUND Conventionally, a door formed in a structure that opens to both the front and back is known. Moreover, as a lock device, there are some which were described in the following patent document 1, for example.

Japanese Utility Model Application Publication No. 2-45257

  A passer-by can open the door as described above in either the front or back direction. For this reason, other passers-by who are on the other side of the door can not anticipate the direction in which the door opens.

  The present invention was made to solve the above-mentioned problems. It is an object of the present invention to provide a latch device and an electric lock system which open a door formed in a structure that opens both in the front and the back only in a certain direction when viewed from a passer-by.

The latch device according to the present invention is provided on the front side surface of the door, and is provided on the operated first handle and the rear surface of the door, and operated independently of the first handle, the first handle The second handle not interlocked with the movement of the first, and the first latch bolt which retracts toward the inside of the door interlocked with the operation to the first handle and not interlocked with the operation to the second handle, interlocked with the operation to the second handle And the second latch bolt does not interlock with the operation to the first handle , and the first latch bolt has a tapered shape so as to be tapered when viewed from the vertical direction. One side of the front side or the back side is inclined, and the other side of the front side or the back side of the tip end is inclined so that the second latch bolt has a tapered shape as viewed in the vertical direction. bolt and the second latch bolt, parallel adjacent back and forth at the same height Those located inside the same receiving hole in a state in which disposed and the door is closed in.

  An electric lock system according to the present invention is capable of operating at least one of a first handle and a second handle based on a signal from the latch device, a locking and unlocking operation device for receiving an unlocking operation, and the locking and unlocking operation device. And a controller.

  In the latch device according to the present invention, one surface of the front side or the back side of the tip end portion of the first latch bolt is inclined, and the other surface of the front side or the back side of the tip portion is inclined. doing. For this reason, according to the present invention, it is possible to open the door formed in a structure that opens to both the front and the back only in a certain direction when viewed from a passerby.

It is a 1st perspective view of the latch device in Embodiment 1 of this invention. It is a 1st horizontal sectional view of the latch device in Embodiment 1 of this invention. It is a 2nd perspective view of the latch device in Embodiment 1 of this invention. It is a 2nd horizontal sectional view of the latch device in Embodiment 1 of this invention. It is a top view of the door provided with the latch device in Embodiment 1 of the present invention. It is a 3rd horizontal sectional view of the latch device in Embodiment 1 of this invention. It is a 1st schematic diagram which shows the electric lock system provided with the latch apparatus in Embodiment 1 of this invention. It is a 2nd schematic diagram which shows the electric lock system provided with the latch apparatus in Embodiment 1 of this invention.

  The present invention will be described in detail with reference to the accompanying drawings. In each of the drawings, the same or corresponding parts are denoted by the same reference numerals. Duplicate descriptions will be simplified or omitted as appropriate.

Embodiment 1
FIG. 1 is a first perspective view of the latch device in the first embodiment. The latch device is provided, for example, on the door 1 formed in a structure that opens to both the front side and the back side. FIG. 1 shows the state of the latch device when the door 1 is closed.

  As shown in FIG. 1, the latch device includes a case 2, a first handle 3a and a second handle 3b. Case 2 is incorporated in the inside of door 1. The case 2 has a front 4 at the end of the door 1 at the end of the door 1. The front 4 is exposed to the outside of the door 1. The first handle 3a and the second handle 3b are, for example, a knob or a lever handle. The first handle 3 a is provided on the front side of the door 1 in the front-rear direction. The second handle 3 b is provided on the surface on the back side of the door 1 in the front-rear direction. The first handle 3 a and the second handle 3 b are connected to a drive mechanism (not shown) provided inside the case 2. The first handle 3a and the second handle 3b are operated by, for example, a passer. The operation with respect to the first handle 3a and the second handle 3b is, for example, a rotation operation in a certain angle range or the like. The second handle 3b is operated independently of the first handle 3a. That is, the second handle 3b is not interlocked with the first handle 3a in the above drive mechanism.

  As shown in FIG. 1, the latch device includes a first latch bolt 5a and a second latch bolt 5b. The first latch bolt 5a and the second latch bolt 5b are disposed at the same height. The first latch bolt 5a and the second latch bolt 5b are disposed side by side in the front-rear direction. The first latch bolt 5a is disposed in front of the second latch bolt 5b. The second latch bolt 5b is disposed deeper than the first latch bolt 5a. In the state shown in FIG. 1, the first latch bolt 5 a and the second latch bolt 5 b protrude to the outside of the case 2 through the holes formed in the front 4.

  FIG. 2 is a first horizontal cross-sectional view of the latch device in the first embodiment. FIG. 2 shows a cross-sectional view from above of the latching device when the door 1 is closed.

  As shown in FIG. 2, the first latch bolt 5a is provided with a first inclined surface 6a so as to be tapered when viewed in the vertical direction. The second latch bolt 5b is provided with a second inclined surface 6b so as to be tapered as viewed in the vertical direction. In the state shown in FIG. 2, a part of the first latch bolt 5 a including the first inclined surface 6 a protrudes from the front 4 to the outside of the case 2. In the state shown in FIG. 2, a part of the second latch bolt 5 b including the second inclined surface 6 b protrudes from the front 4 to the outside of the case 2. In the state shown in FIG. 2, a portion of the first latch bolt 5 a and the second latch bolt 5 b that protrudes to the outside of the case 2 is located inside the receiving hole 7. The receiving hole 7 is formed in, for example, a receiver attached to the frame of the door 1.

  The first inclined surface 6a is formed from the vicinity of the front 4 of the first latch bolt 5a to the tip in the state shown in FIG. The first latch bolt 5a is formed such that its thickness in the front-rear direction decreases toward the front as it approaches its tip. The first inclined surface 6 a moves away from the center of the front 4 as it approaches the tip of the first latch bolt 5 a in the front-rear direction of the door 1. That is, the first inclined surface 6a is formed on the back side of the first latch bolt 5a. An inclined surface is not formed on the front side of the first latch bolt 5a.

  The second inclined surface 6b is formed from the vicinity of the front 4 of the second latch bolt 5b to the tip in the state shown in FIG. The second latch bolt 5b is formed such that its thickness in the front-rear direction decreases toward the back as it approaches its tip. As the second inclined surface 6 b approaches the tip of the second latch bolt 5 b in the front-rear direction of the door 1, the second inclined surface 6 b moves away from the center of the front 4. That is, the second inclined surface 6b is formed on the front side of the second latch bolt 5b. An inclined surface is not formed on the back side of the second latch bolt 5b.

  In the state shown in FIG. 2, the front surface of the first latch bolt 5a interferes with the front edge of the receiving hole 7, so that the latch device can not move toward the front. Further, in the state shown in FIG. 2, since the back surface of the second latch bolt 5 b interferes with the back edge of the receiving hole 7, the latch device can not move backward. That is, in the state shown in FIG. 2, the door 1 is not opened to either the front side or the back side.

  The first latch bolt 5 a and the second latch bolt 5 b are formed to be movable toward the inside and the outside of the case 2. The first latch bolt 5a and the second latch bolt 5b are connected to the drive mechanism described above. The first latch bolt 5a moves in conjunction with the operation on the first handle 3a. The second latch bolt 5b moves in conjunction with the operation on the second handle 3b. That is, the second latch bolt 5b is not interlocked with the first latch bolt 5a in the above drive mechanism. Further, the first latch bolt 5a and the second latch bolt 5b are formed so as to be movable even when a force is directly applied without the above-mentioned drive mechanism.

  FIG. 3 is a second perspective view of the latch device in the first embodiment. FIG. 3 shows, as an example, the state of the latch device when the first handle 3a is rotated when the door 1 is closed. As shown in FIG. 3, when the first handle 3 a is rotated, the first latch bolt 5 a moves inside the case 2. That is, the first latch bolt 5a retracts toward the inside of the door 1 in conjunction with the operation on the first handle 3a.

  FIG. 4 is a second horizontal cross-sectional view of the latch device in the first embodiment. FIG. 4 shows a cross section of the latch device in the state shown in FIG. 3 as viewed from above.

  In the state shown in FIG. 4, the back surface of the second latch bolt 5 b interferes with the back edge of the receiving hole 7. For this reason, in the state shown in FIG. 4, the latch device can not move toward the back. On the other hand, in the state shown in FIG. 4, the first latch bolt 5 a is in a state of being retracted to the inside of the door 1. That is, the front surface of the first latch bolt 5 a does not interfere with the front edge of the receiving hole 7. When the door 1 is pulled to the front from the state shown in FIG. 4, the second inclined surface 6 b contacts the edge on the front side of the receiving hole 7. At this time, the second latch bolt 5 b is pushed into the inside of the case 2 by the force that the second inclined surface 6 b receives from the front edge of the receiving hole 7. Therefore, in the state shown in FIG. 4, the latch device can move toward the front. That is, in the state shown in FIG. 4, the door 1 can be opened only to the front.

  In contrast to the example shown in FIG. 3, when the second handle 3 b is rotated while the door 1 is closed, the second latch bolt 5 b moves into the inside of the case 2. That is, the second latch bolt 5b retracts toward the inside of the door 1 in conjunction with the operation on the second handle 3b. In this state, the door 1 can be opened only to the back.

  FIG. 5 is a plan view of the door provided with the latch device in the first embodiment. In FIG. 5, the range in which the door 1 can be structurally opened is indicated by a broken line. In FIG. 5, the door 1 in the closed state is shown by a solid line. That is, the door 1 in the state shown in FIGS. 1 to 4 is shown in FIG. 5 as a solid line. In FIG. 5, the door 1 in the state of being opened to the front is indicated by an alternate long and short dash line. That is, the door 1 when it is pulled to the front from the state shown in FIG. 4 is shown in FIG.

  FIG. 6 is a third horizontal cross-sectional view of the latch device in the first embodiment. The cross section which looked at the latch apparatus when the door 1 is opened to the front from the state shown in FIG. 4 is seen from the top. That is, FIG. 6 shows a cross section of the latch device in the state shown in FIG.

  As shown in FIG. 6, the first latch bolt 5 a maintains a state of being retracted inside the door 1 in conjunction with the rotation operation on the first handle 3 a. Further, as shown in FIG. 6, the second latch bolt 5b is applied to the inside of the case 2 by the force the second inclined surface 6b receives from the front edge of the receiving hole 7 when the door 1 is opened to the front It has been kept pushed. As described above, when the first latch bolt 5 a and the second latch bolt 5 b retract once toward the inside of the door 1, the first latch bolt 5 a and the second latch bolt 5 b maintain the retracted state while the door 1 is open. That is, the above-described drive mechanism has a function of retaining the first latch bolt 5 a and the second latch bolt 5 b inside the case 2.

  The first latch bolt 5 a and the second latch bolt 5 b advance toward the outside of the door 1 when the door 1 is closed. That is, the first latch bolt 5a and the second latch bolt 5b enter the inside of the receiving hole 7 as shown in FIGS. 1 and 2 when the door 1 is closed. For example, when the state of the door 1 changes from the state shown by the solid line in FIG. 5 to the state shown by the alternate long and short dash line, the latch device returns from the state shown in FIG. 6 to the state shown in FIG. That is, when the door 1 is closed, the above-described drive mechanism releases the function of retaining the first latch bolt 5 a and the second latch bolt 5 b inside the case 2.

  FIG. 7 is a first schematic diagram showing the electric lock system provided with the latch device in the first embodiment. FIG. 7 shows the configuration of the electric lock system using a front view of the door 1 viewed from the front. FIG. 8 is a second schematic view showing the electric lock system provided with the latch device in the first embodiment. FIG. 8 shows the configuration of the electric lock system using a plan view of the door 1.

  The electric lock system includes a latch device provided on the door 1, a locking and unlocking operation device 8, and a control device 9. The electric lock system includes, for example, a first locking and unlocking operation device 8 a and a second locking and unlocking operation device 8 b as the locking and unlocking operation device 8. The first locking and unlocking operation device 8a is provided, for example, on a wall near the door 1, a surface on the front side of the door 1 itself, or the like. The second locking and unlocking operation device 8b is provided, for example, on a wall near the door 1, a surface on the back side of the door 1 itself, or the like. The locking and unlocking operation device 8 is, for example, an IC card reader, an IC tag reader, a fingerprint sensor, a ten key, a push button or a touch panel. The control device 9 is provided, for example, inside the door 1 or a wall. Further, the control device 9 may be incorporated in the locking and unlocking operation device 8.

  The locking and unlocking operation device 8 receives an unlocking operation by a passerby or the like. The unlocking operation is, for example, allowing a passerby to read information from the identification body such as an IC card or an IC tag by the locking and unlocking operation device 8. In addition, the unlocking operation is, for example, that a passerby uses the locking and unlocking operation device 8 to input information such as a personal identification number or a password. The locking and unlocking operation device 8 transmits, to the control device 9, a signal indicating information acquired by accepting the unlocking operation.

  In the electric lock system, the first handle 3a and the second handle 3b can not be operated when the unlocking operation is not performed. When the unlocking operation is not performed, the first handle 3a and the second handle 3b can not be rotated, for example.

  The control device 9 stores in advance information for collation. The control device 9 collates the information indicated by the signal transmitted from the locking and unlocking operation device 8 with the information for collation. The control device 9 controls the first handle 3a and the second handle 3b based on the result of the collation.

  When the information indicated by the signal transmitted from the first locking and unlocking operation device 8a is included in the information for comparison, the control device 9 makes the first handle 3a operable. When the information indicated by the signal transmitted from the second locking and unlocking operation device 8b is included in the information for comparison, the control device 9 makes the second handle 3b operable. Note that the control device 9 does not put the second handle 3b into the operable state based on the information indicated by the signal transmitted from the first locking and unlocking operation device 8a. In addition, the control device 9 does not put the first handle 3a into the operable state based on the information indicated by the signal transmitted from the second locking and unlocking operation device 8b. That is, the control device 9 controls the first handle 3a and the second handle 3b so that the door 1 can be opened from the side where the unlocking operation is performed among the front and the back of the door 1.

  In the first embodiment, the first latch bolt 5a retracts toward the inside of the door 1 in conjunction with the operation on the first handle 3a. The first latch bolt 5a has a first inclined surface 6a formed on only one of the front side and the rear side. That is, only one surface on the front side or the rear side of the tip end portion of the first latch bolt 5a is inclined such that the first latch bolt 5a has a tapered shape as viewed in the vertical direction, and the other surface is not inclined. When the tip end of the first latch bolt 5 a is located inside the receiving hole 7, the other surface of the tip interferes with the other edge of the receiving hole 7. The second latch bolt 5b retracts toward the inside of the door 1 in conjunction with the operation on the second handle 3b. The second latch bolt 5b has a second inclined surface 6b formed only on the other side of the near side or the back side. That is, only the other side of the front or back side of the tip is inclined so that the second latch bolt 5b has a tapered shape as viewed in the vertical direction, and one surface of the front or back side of the tip Is not inclined. When the tip end portion of the second latch bolt 5 b is located inside the receiving hole 7, the one surface of the tip end portion interferes with the one edge portion of the receiving hole 7. For this reason, when the 1st handle 3a is operated by the passerby, it becomes possible to open the door 1 only in said one in the front-back direction. When the second handle 3b is operated by a passerby, the door 1 can be opened only to the other in the front-rear direction. That is, according to the present invention, it is possible to open the door formed in a structure that opens to both the front side and the back side only in a certain direction when viewed from a passer-by. As a result, for example, other passersby on the other side of the door can expect the door to open.

  In the first embodiment, the first inclined surface 6a of the first latch bolt 5a is formed on the back side. That is, the first latch bolt 5a is inclined at the back surface of the tip end portion. The second inclined surface 6b of the second latch bolt 5b is formed on the front side. That is, the surface of the second latch bolt 5b on the front side of the tip end is inclined. Therefore, when the first handle 3a is operated by a passerby, the door 1 can be opened only to the front. In addition, when the second handle 3b is operated by a passerby, the door 1 can be opened only at the back. That is, according to the present invention, a door formed in a structure that opens to both the front and the back can always be pulled open by a passerby. Thereby, for example, when the door is pushed and opened, the door can be prevented from colliding with other passers and the like. As a result, for example, it is possible to improve the safety of a passer who tries to open a door formed in a structure that opens to both the front and the back.

  In the first embodiment, when the first latch bolt 5 a and the second latch bolt 5 b are retracted toward the inside of the door 1, the first latch bolt 5 a and the second latch bolt 5 b maintain the retracted state while the door 1 is open. This can prevent the door 1 from closing. Further, the first latch bolt 5 a and the second latch bolt 5 b advance to the outside of the door 1 when the door 1 is closed. This can prevent the passerby from being unable to predict the opening direction of the door 1.

  In the first embodiment, the locking and unlocking operation device 8 receives an unlocking operation by a passerby or the like. The control device 9 makes at least one of the first handle 3a and the second handle 3b of the latch device operable based on the signal from the locking and unlocking operation device 8. As a result, it is possible to realize an electric lock system in which a door formed in a structure that opens both in the front and the back is opened only in a certain direction when viewed from a passerby.

  In the present invention, the first latch bolt 5a and the second latch bolt 5b are arranged side by side at the same height. The first latch bolt 5a is disposed in front of the second latch bolt 5b. The second latch bolt 5b is disposed deeper than the first latch bolt 5a. That is, the first latch bolt 5a is disposed closer to the first handle 3a than the second handle 3b. In addition, the second latch bolt 5b is disposed closer to the second handle 3b than the first handle 3a. Therefore, it is possible to realize a drive mechanism in which the first latch bolt 5a interlocks with the first handle 3a and the second latch bolt 5b interlocks with the second handle 3b with a simpler configuration.

  In the present invention, the first latch bolt 5a and the second latch bolt 5b may not be arranged side by side at the same height. For example, the first latch bolt 5a and the second latch bolt 5b may be arranged side by side vertically. Further, the first latch bolt 5a may not be disposed in front of the second latch bolt 5b. For example, the second latch bolt 5b may be disposed in front of the first latch bolt 5a. Even in these cases, if the first latch bolt 5a interlocks with the first handle 3a and the second latch bolt 5b interlocks with the second handle 3b, the door 1 must be pulled open by the passer-by It can be done.

  In the present invention, it is also possible to interlock the first latch bolt 5a with the second handle 3b and interlock the second latch bolt 5b with the first handle 3a. Even in this case, the door 1 can be opened only in a certain direction as seen from the passerby. However, in this case, the passerby must push the door 1 open.

  The electric lock system in the present invention may be configured such that the first latch bolt 5 a and the second latch bolt 5 b interlock with the locking and unlocking operation device 8. For example, the first latch bolt 5a and the second latch bolt 5b can not move when the unlocking operation is not performed, and at least one of the first handle 3a and the second handle 3b can be operated by the unlocking operation. In this state, it may be movable. That is, the first latch bolt 5a and the second latch bolt 5b can not be moved by applying a direct force before performing the unlocking operation, and can be moved by applying a direct force after performing the unlocking operation. It may be formed to be able to Even in this case, the door 1 can be opened only in a certain direction as seen from the passerby.

  The electric lock system in the present invention may be configured such that the first latch bolt 5 a and the second latch bolt 5 b interlock with the locking and unlocking operation device 8. For example, when the unlocking operation is performed on the first locking and unlocking operation device 8a, the first latch bolt 5a retracts toward the inside of the door 1, and the unlocking operation on the second locking and unlocking operation device 8b. The second latch bolt 5 b may be retracted toward the inside of the door 1 when the second lock bolt 5 b is performed. In this case, the first handle 3a and the second handle 3b do not have to be connected to the drive mechanism. Even in this case, the door 1 can be opened only in a certain direction as seen from the passerby.

  The electric lock system in the present invention may be provided with only one of the first locking and unlocking operation device 8a and the second locking and unlocking operation device 8b as the locking and unlocking operation device 8. For example, when entering the room, the check by the control device 9 is necessary, and the locking / unlocking operation device 8 may not be provided inside the room which is unconditionally permitted to leave. In this case, among the first handle 3a and the second handle 3b, those located inside the room may be in an operable state at all times.

DESCRIPTION OF SYMBOLS 1 door 2 case 3a 1st handle 3b 2nd handle 4 front 5a 1st latch bolt 5b 2nd latch bolt 6a 1st inclined surface 6b 2nd inclined surface 7 receiving hole 8 unlocking / unlocking operation device 8a 1st locking / unlocking operation device 8b Second locking and unlocking operation device 9 control device

Claims (4)

A first handle provided on the front side of the door and operated;
A second handle provided on the back side of the door, operated independently of the first handle, and not linked to the movement of the first handle ;
A first latch bolt that retracts toward the inside of the door in conjunction with an operation on the first handle and does not interlock with an operation on the second handle ;
A second latch bolt that retracts toward the inside of the door in conjunction with an operation on the second handle and does not interlock with an operation on the first handle ;
Equipped with
One surface of the front side or the rear side of the tip end portion is inclined so that the first latch bolt has a tapered shape as viewed in the vertical direction,
In the second latch bolt, the other surface on the front side or the back side of the tip end is inclined so as to be tapered when viewed in the vertical direction,
The first latch bolt and the second latch bolt are disposed adjacent to each other at the same height and back and forth and located inside the same receiving hole when the door is closed. In the first latch bolt, the surface on the back side of the tip end is inclined,
The latch device according to claim 1, wherein a surface on the front side of the tip end of the second latch bolt is inclined.   The first latch bolt and the second latch bolt, when retreated toward the inside of the door, maintain the retreated state while the door is open, and the door is closed when the door is closed. The latch device according to claim 1, wherein the latch device is advanced toward the outside of the housing. A latch device according to any one of claims 1 to 3;
A locking and unlocking operation device for receiving an unlocking operation;
A control device for making at least one of the first handle and the second handle operable based on a signal from the locking and unlocking operation device;
Electric lock system equipped with

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