JP2014001573A - Lock mechanism with indicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock mechanism with an indicator having an indicator function capable of reliably identifying locking and unlocking of a door and the like.SOLUTION: An operation lever 20 includes: a base end part 56 having a pin hole 53 through which a pin 42 is inserted and a part of its outer peripheral surface facing a display window 18; and an operation part 57 extended from the base end part 56. The operation part 57 is biased by a spring member 64 so that it is positioned above the pin 42, and first and second indicators 17A, 17B are positioned on and arranged along the outer peripheral surface of the base end part 56. The first indicator 17A is exposed in the display window 18 in the state that the operation part 57 is positioned above the pin 42; rotary operation of a key 19 makes a latch plate 16 swing toward a locking/unlocking display device 14; the operation part 57 is pushed down against the spring biasing to move lower than the pin 42 by abutting a tip 16a of the latch plate 16 against the operation part 57 of the operation lever 20 from above; and thus the base end part 56 rotates and the second indicator 17B is exposed in the display window 18.

Description

  The present invention relates to a lock mechanism with an indicator used for a door or a door.

  The lock mechanism with an indicator disclosed in Patent Document 1 has a lock main body and a latch plate, and the front side of the lock main body is rotated between a locked position and an unlocked position by a key operation. Is provided with an indicator indicating a locked state or an unlocked state.

JP 2010-144417 A

  According to the lock mechanism with an indicator disclosed in Patent Document 1, the indicator is exposed from the display window located on the front side of the lock body, and the operator can easily check the locked state of the lock mechanism by visually checking the indicator. The unlocked state can be determined.

  However, in such a lock mechanism with an indicator, even if the locking operation is performed in a state where the latch plate is located between the door and the door frame, the indicator indicates the locking state together with the key operation, May misunderstand that the door is actually locked.

  The present invention is an improvement of a conventional locking mechanism with an indicator, and relates to a locking mechanism with an indicator having an indicator function that can reliably identify locking and unlocking of a door or the like.

  In order to solve the above-mentioned problems, the present invention is directed to a lock mechanism with an indicator that includes a lock device attached to a door and a lock / unlock display device attached to a door frame.

  In the lock mechanism according to the present invention, the lock device is rotated by inserting a key into a lock main body fixed to the door frame and a key hole located in the front surface of the lock main body. And a latch plate pivotally supported by the rotating body, and the locking / unlocking display device is positioned on a front surface of the casing and a casing fixed to the door frame. A display window and an operation lever that is positioned in the casing and is pivotably attached via a pin, the operation lever having a pin hole through which the pin is inserted, The portion has a base end portion facing the display window and an operation portion extending from the base end portion, and the operation portion is biased by a spring member so as to be positioned above the pin. The outer peripheral surface of the base end portion The first indicator is exposed to the display window in a state where the first and second indicators arranged in the direction are located, and the operation unit is located above the pin, and the key is rotated. By rotating the latch plate toward the locking / unlocking display device and bringing the tip of the latch plate into contact with the operation portion of the operation lever from above, the operation portion resists spring bias. The second indicator is exposed to the display window by being pushed down and moved downward from the pin, the base end portion rotating, and the display window.

  One embodiment of the present invention further includes a guide plate attached to the door frame and having an opening through which the latch plate can turn.

  In another embodiment of the present invention, the casing includes a housing portion in which the base end portion of the operation lever is housed, and the housing portion is spaced apart from and opposed to the housing portion in the longitudinal direction. 1st and 2nd notch which can move forward and backward is provided.

  One of other embodiments of the present invention further includes a rotation restricting means for restricting the rotation of the rotating body within a certain angle range.

  According to the lock mechanism with an indicator according to the present invention, the operation lever of the locking / unlocking display device is urged by the spring member so that the operation portion is always located above the pin, so that the display window located on the front surface Exposes a first indicator which means that the door is unlocked. On the other hand, when the key is inserted into the keyhole of the lock device and rotated, the rotating body rotates in conjunction with the rotation of the latch plate pivotally supported by the rotating plate. Press down. As a result, the base end portion rotates and a second indicator indicating that the door is locked is exposed on the display window. Thus, the second indicator, which means that the door is locked only when the door is completely locked by the locking device, is exposed. Due to its configuration, the second indicator is erroneous when the door is unlocked. Therefore, the operator can confirm the locking / unlocking of the door more reliably.

The perspective view which looked at the locking mechanism with an indicator concerning the present invention from the front of the door. The perspective view which looked at the locking mechanism with an indicator from the back of the door in the unlocked state. The perspective view which looked at the locking mechanism with an indicator from the back of the door in the locked state. The disassembled perspective view of the locking mechanism with an indicator. The perspective view of the operation lever with which the spring member was attached. Sectional drawing which follows the VI-VI line shown in FIG. Sectional drawing which follows the VII-VII line shown in FIG. (A) The top view which looked at the front of the locking / unlocking display apparatus in a locked state from the front, (b) The top view which looked at the front of the locking / unlocking display apparatus in an unlocked state from the front.

  Referring to FIGS. 1 to 3, the indicator-equipped locking mechanism 10 includes a vertical direction Y and a front-rear direction X, a lock device 12 attached to the door 11 side, and a locking / unlocking display device 14 attached to the door frame 13. The lock device 12 has a front face F1 located on the front side of the door 11 and a rear face B1 located on the rear face side of the door 11, and a lock main body 15 partially exposed on the front face F1 side, and a rear face B1 side. And a latch plate 16 attached to the lock body 15. The latch plate 16 turns in the R1 direction by rotating the key 19 inserted in the key hole 15a of the lock body 15 in one direction, and turns in the R2 direction by rotating the key 19 in the reverse direction. The locking / unlocking display device 14 has a front surface F2 positioned in front of the door frame 13 and a rear surface B2 positioned in the rear surface of the door frame 13. The locking and unlocking of the lock device 12 is visually recognized from the front side of the door. An operation lever 20 having first and second indicators 17A and 17B, which will be described later, and a display window 18 which is located on the front surface F2 side and exposes the first and second indicators 17A and 17B. Referring to FIG. 3, the operation lever 20 is spring-biased so that the rod-like operation portion 57 faces obliquely upward.

  Referring to FIG. 2, the outer portion 13 a of the door frame 13 has a bent shape, and overlaps with the bent portion 11 a of the door 11 in the front-rear direction X. A guide plate 22 having a substantially L-shaped cross section having an opening 21 extending in the direction Y is attached. In the locked state of the lock device 12, the latch plate 16 is inserted through the opening 21 of the guide plate 22, its tip end portion 16 a comes into contact with the operation lever 20 of the lock / unlock display device 14, and the operation portion 57 of the operation lever 20 has a spring. It is pushed down against the forces.

  Referring to FIG. 4, the lock device 12 has an axial direction in which the key is inserted, and the lock body 15 has the same configuration as a commercially available normal lock body (cylinder lock). A housing 28 having a flange 25 that contacts the mounting hole 24 of the door 11, a front cylindrical portion 26 that extends forward from the outer peripheral edge of the flange 25, and a rear cylindrical portion 27 that extends rearward from the center of the flange 25. Including. A key hole is located at the center of the front cylindrical portion 26, and the rear cylindrical portion 27 has a spiral groove 27a located on the outer peripheral surface thereof, and a stopper 30 having a curved shape along the rear end and protruding rearward. . In the housing 28, a rotating body 31 is disposed so as to be slidable and rotatable within the space, and a shaft portion 32 having a spiral groove 31 a on the outer peripheral surface of the rotating body 31 extends rearward. The lock main body 15 is attached to the door 11 by inserting the rear cylindrical portion 27 into the door mounting hole 24 and screwing a nut 33 thereto through a packing (not shown).

  A locking plate 35 and a latch plate 16 that can rotate together with the shaft portion 32 are attached to the shaft portion 32 of the rotating body 31 of the lock body 15. The locking plate 35 has a square hole 36 located at the center and a pair of locking pieces 35a and 35b protruding outward. The latch plate 16 has a square hole 37 substantially in the same shape as the square hole 36 of the locking plate 35 on the base end side, and the flat contact surface of the shaft portion 32 is a corner of the locking plate 35 and the latch plate 16. They are passed through in contact with the inner surface of the hole 37. The locking plate 35 and the latch plate 16 are fixed to the shaft portion 32 by screwing the nut 39 to the shaft portion 32 from the rear of the latch plate 16 via the washer 38. The locking plate 35 is positioned so that one of the locking pieces 35 a and 35 b is opposed to the locking plate 35 and abuts on either end of the stopper 30 positioned at the rear end of the rear cylindrical portion 27, thereby restricting the rotation of the locking plate 35. Is done. The rotation of the locking plate 35 is adjusted so that the rotation angle thereof is about 90 degrees, and the rotation angle of the locking plate 35 rotates in conjunction with the shaft portion 32 of the rotating body 31. Therefore, the latch plate 16 is rotated in the R1 direction from the upright state in the vertical direction Y until it comes into contact with the operating portion 57 of the operating lever 20 and is pushed down. You can turn freely.

  The locking / unlocking display device 14 includes a casing 41 having the same outer shape as the mounting hole 40 provided in the door frame 13, a pin 42, and an operation lever 20 that is pivotally fixed to the casing 41 via the pin 42. Have The casing 41 includes a base 43, first and second end portions 44 and 45 that are spaced apart from each other in the longitudinal direction Y, a storage portion 46 that has a peripheral wall protruding outward from the base 43, and a storage portion 46. And a fixing portion 49 that is positioned to be opposed to each other in the longitudinal direction Y and has a screw hole at the center that protrudes outward from the base portion 43. The accommodating portion 46 includes first and second notches 51 and 52 that are spaced apart from each other in the longitudinal direction Y, and pin holes 53 that are spaced apart from each other in the axial direction of the pin 42. A display window 18 is provided in the base 43 where the housing portion 46 is located.

  Referring to FIGS. 4 and 5, the operation lever 20 includes a base end portion 56 having a substantially sectoral cross section stored in the storage portion 46, an operation portion 57 extending from the base end portion 56, and both sides of the base end portion 56. It has the latching | locking part 58 which protrudes outside, and the through-hole 59 in which the pin 42 which connects the base end part 56 and the latching | locking part 58 is penetrated. The operation lever 20 is pivotally supported by a pin 42 that passes through the pin hole 53 of the housing portion 46 and the through hole 59 of the base end portion 56. On the outer peripheral surface of the base end portion 56, a first indicator 17A indicating that the lock lock devices 12 arranged in the circumferential direction are in an unlocked state and a second indicator 17B indicating that they are in a locked state are disposed. Each of the first and second indicators 17A and 17B has approximately half the size of the outer peripheral surface of the base end portion 56, and the boundary line 61 is located at the boundary between them. The first and second indicators 17A and 17B are provided with an identification element for making the difference between them easily visible when exposed to the display window 18, and the first indicator is used as the identification element. 17A has a plurality of dot patterns, and the second indicator 17B has a plurality of line patterns. The identification element may be another identification element such as red, green, or another different color, figure, pattern, character, or a combination thereof applied by printing or sticking. A transparent or translucent transparent member 62 is optionally disposed between the outer peripheral surface of the base end portion 56 of the operation lever 20 and the display window 18. By disposing the transparent member 62, the first and second indicators 17A and 17B are visually recognized from the display window 18 through the transparent member 62, and dust and small dust are contained in the housing portion 46 from the display window 18. Can be prevented from entering.

  A spring member (double torsion spring) 64 having a pair of spring portions 63 is attached to the operation lever 20, and the spring portions 63 are locked to both locking portions 58 of the base end portion 56 of the control lever 20. The intermediate portion 65 a of the rectangular frame-like extension portion 65 that connects the spring portions 63 is hooked to the operation portion 57 of the operation lever 20. The spring member 64 further includes an arm 66 extending from the spring portion 63 toward the base portion 43 of the casing 41, and the arm 66 is in contact with the base portion 43. The spring member 64 constantly urges the operation portion 57 of the operation lever 20 toward the first end portion 44 side (upper side) of the casing 41, and the operation portion 57 is located in the first notch 51.

  Referring to FIG. 4, the casing 41 is inserted into the mounting hole 40 of the door frame 13 through the elastic member or the plastic mounting plate 70, and then the cover panel 71 is attached. The cover panel 71 has a pair of screw holes 72 that are spaced apart from each other in the longitudinal direction Y, and an insertion portion 73 through which the housing portion 46 of the casing 41 is inserted. The locking / unlocking display device 14 is stably attached to the door frame 13 by inserting the screw 74 from the rear into the screw hole 72 of the cover panel 71 and screwing it into the fixing portion 49 of the casing 41.

  6 and 7, the operation portion 57 of the operation lever 20 of the locking / unlocking display device 14 is urged so as to be positioned above the pin 42 by the spring member 64, and is shown in FIG. 8 (a). As described above, the first indicator 17 </ b> A is exposed through the transparent member 62 in the display window 18 on the front surface F <b> 2 of the locking / unlocking display device 14. When the key 19 is inserted into the key hole of the lock body 15 of the lock device 12 and rotated, the latch plate 16 turns toward the locking / unlocking display device 14 (in the direction of the arrow R1 in FIG. 2), and the tip portion thereof. 16a contacts the operation part 57 of the operation lever 20 from above. The latch plate 16 is urged by the torque force of the shaft portion 32 and its own weight and comes into contact with the operation portion 57, and the operation portion 57 is separated from the first notch 51 against the urging force of the spring member 64. By pushing down toward the end 45, that is, downward, the operation unit 57 turns in the P1 direction. The locking piece 35b of the locking plate 35 that rotates together with the shaft portion 32 comes into contact with the end of the stopper 30 of the rear cylindrical portion 27 that faces the locking piece 35, whereby the rotation of the shaft portion 32 is restricted and the latch plate 16 is released. Rotate 90 degrees from the locked state (upright in the vertical direction Y) and stop in a lying state. In a state in which the latch plate 16 is lying down, the operation portion 57 of the operation lever 20 is located in the second notch 52, the operation portion 57 is pushed down, and the base end portion 56 rotates in the Q2 direction. As shown in FIG. 8B, the second indicator 17B is exposed in the display window 18 of F2.

  Next, when unlocking the lock device 12, the key 19 inserted in the keyhole is rotated in the direction opposite to that at the time of locking, whereby the latch plate 16 is separated from the operation portion 57 of the operation lever 20 ( 2, and the latch plate 16 is separated from the operation portion 57. At the same time, the operation portion 57 is moved toward the first end 44 side of the casing 41 by the elastic force of the spring member 64, that is, upward (arrow P2). Direction) and move into the first cutout 51 to return to the state before locking. At the same time, the base end portion 56 also rotates in the Q1 direction, and the first indicator 17A is exposed in the display window 18.

  Thus, by rotating the operation lever 20 using the movement of the latch plate 16 at the time of locking and unlocking, the first indicator 17A is exposed from the display window 18 in the unlocked state, while the locked state is Since the second indicator 17 </ b> B is exposed from the display window 18, the operator instantly determines whether the lock mechanism 10 is locked or unlocked by checking the display window 18 positioned in front of the door frame 12. be able to. In the case of a lock mechanism having a conventional indicator function, even if the door is positioned on the front side of the door frame and the latch plate 16 is lying down and the door is not locked, the key can be rotated. There is a possibility that an indicator indicating the unlocked state is displayed on the display window by the operation. However, according to the lock mechanism 10 according to the present invention, the latch plate 16 pushes down the operation lever 20 in the unlocked state. Therefore, the second indicator 17B is not displayed on the display window, and the operator will not misunderstand that the door is locked.

  The operating portion 57 of the operating lever 20 may be flat rather than circular, but if the cross section is substantially circular, the contact area when the latch plate 16 is contacted during locking is reduced, so that the efficiency is higher. The turning force of the latch plate 16 can be transmitted to the operation unit 57 well. In addition, as described above, the guide plate 22 is optional, but by providing the guide plate 22 on the door frame 13, even when the door rattles and the latch plate 16 may shift in the front-rear direction X, the guide plate 22. By inserting the latch plate 16 through the opening 21, it is possible to reliably contact the appropriate position of the operating portion 57 and push it down.

DESCRIPTION OF SYMBOLS 10 Lock mechanism with indicator 11 Door 12 Locking device 13 Door frame 14 Locking / unlocking display device 15 Locking main body 16 Latch plate 16a Latch plate tip 17A First indicator 17B Second indicator 18 Display window 19 Key 20 Operation lever 21 Opening 22 Guide Plate 30 Stopper 31 Rotating body 35 Locking plates 35a, 35b Locking piece 41 Casing 46 Housing portion 51 First notch 52 Second notch 56 Base end portion 59 Pin hole 57 Operation portion 64 Spring member X Front-rear direction Y Vertical direction

Claims (4)

In a lock mechanism with an indicator having a vertical direction and a front-rear direction, and including a lock device attached to a door and a lock / unlock display device attached to a door frame,
The lock device rotates in conjunction with a lock main body fixed to the door frame, a key inserted in a key hole located in the front surface of the lock main body, located in the lock main body, and rotated. A rotating body, and a latch plate attached to the rotating body,
The locking / unlocking display device includes a casing fixed to the door frame, a display window positioned on the front surface of the casing, an operation lever positioned in the casing and pivotably attached via a pin. Including
The operation lever has a pin hole through which the pin is inserted, a part of an outer peripheral surface of the operation lever includes a base end part facing the display window, and an operation part extending from the base end part, The operating portion is biased by the spring member so as to be positioned above the pin, and the first and second indicators arranged in the circumferential direction are positioned on the outer peripheral surface of the base end portion,
The first indicator is exposed in the display window in a state where the operation unit is located above the pin,
By rotating the key, the latch plate is turned toward the locking / unlocking display device, and the tip of the latch plate is brought into contact with the operation portion of the operation lever from above, whereby the operation portion is spring-loaded. The lock mechanism with an indicator, wherein the lock mechanism is pushed down against an urging force and moves below the pin, the base end portion rotates, and the second indicator is exposed to the display window. .   The lock mechanism with an indicator according to claim 1, further comprising a guide plate attached to the door frame and having an opening through which the latch plate can turn and pass.   The casing has a housing portion in which the base end portion of the operation lever is housed, and the housing portion is spaced apart from and opposed to each other in the vertical direction, and the operation portion of the operation lever is capable of moving forward and backward. The locking mechanism with an indicator according to claim 1 or 2, wherein two notches are provided.   The lock mechanism with an indicator according to any one of claims 1 to 3, further comprising a rotation restricting means for restricting the rotation of the rotating body within a certain angle range.

Images