JP2010203095A - Lock device of door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily lock a door for a toilet and the like, and release the locked state from the outside of the door in an emergency. <P>SOLUTION: A support part 3 on which a lock member 4 slides is affixed to the inside of the door, and a fixed part 5 is affixed to the outer surface of the door. A lifting plate drive member 7 on which a lifting plate 6 vertically moving in the fixed part 5 is disposed and which is connected to a drive shaft 9 rotated when the lock member 4 slides is provided to the fixed part 5. The drive plate 7a of the lifting plate drive member 7 is rotated when the lock member 4 is locked and unlocked to vertically move the lifting plate 6 and display the locked state and the unlocked state in the window of a cover member 8. The lock member 4 is provided with a fixing means which is pre-pressed so as to move in the unlocking direction and fixes the lock member 4 against the pressing when the door is locked. In an emergency, the lock member is returned by inserting a pin through openings 8b, 7b, 9a to release the fixing means, and the door is unlocked from the outside. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a door locking device, and more particularly to a sliding door locking device.

  For example, as a locking device for a toilet door or the like, a means for locking the door by sliding a slide-type locking member toward the wall inside the toilet and a means for displaying the presence or absence of the locked state outside the door are provided. There is also a door locking device.

The following documents disclose such a slide-type locking device and an invention relating to a locking device having a locking unit and a display unit.
JP2007-182732 JP 2005-120767 A

  The invention of each of the above patent documents is configured such that the door can be securely locked and the presence or absence of the lock is displayed on the display unit. Both display units of the inventions described in both patent documents rotate a display plate in the display unit, and through a window formed at a specific position of the display unit, a predetermined portion of the display plate, that is, a lock. It is configured to indicate a (locked) state or an unlocked (unlocked) state.

  In the case of a knob type locking device, the knob itself or the knob located at the center of the knob is rotated to open and close the lock, so that the rotation of the display board can be realized only by a structure coaxial with the knob or knob. On the other hand, the slide type configuration requires means for converting linear motion into rotational motion. In each of the above embodiments, a rotation shaft is attached to the display plate to realize the rotation operation of the display plate, a pinion is provided at the tip of the rotation shaft, and a rack is provided on the slide type lock member side. The display board rotates via a pinion corresponding to the sliding direction of the lock member, and lock / unlock is displayed on the window of the display unit.

  The configuration of the above rack and pinion inevitably increases the number of parts such as the installation of a rotating mechanism and the mounting of the rack, and as a result, the configuration of the entire locking device becomes complicated. The gear mechanism using the rack and pinion can be said to be a somewhat fragile mechanism in an unusable environment such as a toilet door, because operation and operation may be uncertain if dust or dirt enters the meshing portion.

  Moreover, in the conventional lock device including the slide type lock device and other lock devices, there is actually no means for releasing the lock state from the outside of the door. In an increasingly aging society, there are concerns about the occurrence of emergency situations such as falling accidents in the toilets, the occurrence of strokes, etc., but in the future, any type of locking device will be used in an emergency in the future. It is desirable to provide means for releasing the locked state from the outside.

The present invention has been made in view of the above objects.
That is, the present invention comprises a device main body installed inside the door, and a display unit installed outside the door and connected to the device main body via the door, the device main body being fixed to the inside of the door; A lock member that slides relative to the support portion, and the display portion is fixed to the door at a position facing the support portion of the main body of the apparatus on the surface of the door; A door locking device comprising a plate, a lifting plate driving member that rotates in a direction corresponding to a sliding direction of the locking member, and a cover member that covers these members.

  More specifically, the lock member is biased by an elastic body such as a spring so as to move in the unlocking direction, and means for engaging and fixing the lock member at the lock position is provided opposite to the biasing when locked. When it is necessary to unlock from the outside due to an emergency situation or the like, this engagement state can be released from the outside using a pin, a wire or the like.

  When the engaging portion provided at a predetermined position of the lock member and the engaging member provided on the shaft for rotating the lifting plate driving member are engaged, the lifting plate driving member is rotated. Correspondingly, the lifting / lowering plate moves up and down to display the locked / unlocked state on the window of the display unit, so there is no need for complicated gear mechanisms such as racks and pinions, and the structure is simple. Thus, the apparatus can be provided at a low cost and can be a highly reliable apparatus with few failures.

  Even when the lock member is in the door lock position, the locked state can be released from the outside, so that it is possible to cope with an emergency.

Embodiments of the present invention will be specifically described below with reference to the drawings.
First, the overall structure of the slide type locking device according to the present invention will be described mainly with reference to FIG. In the figure, reference numeral 1 denotes a slide type lock device main body (hereinafter simply referred to as “device main body”) installed inside the door, and 2 denotes an arrangement fixed on the surface of the door facing the lock device main body 1 through the door. It is a display part.

  The apparatus main body 1 has a support portion 3 fixed to the door on the back surface of the door, and a lock member 4 that slides relative to the support portion 3. Reference numerals 3a and 3b denote screw cylinders forming a part of the support portion 3, and female screws are formed in the base portions of the screw cylinders 3a and 3b. Reference numeral 9 denotes a drive shaft that engages with an elevating plate driving member described later and rotates the elevating plate driving member. The structure and operating state relating to the operation, locking / unlocking, etc. of the lock member 4 will be described in detail later.

  On the other hand, the display unit 2 includes a fixing unit 5 fixed on the door surface at a position facing the support unit 3 of the apparatus main body 1, an elevating plate 6 that moves up and down in the fixing unit 5, and elevating and lowering the elevating plate 6. The driving plate 7a is a part of the lift plate driving member 7 to be operated, and the cover member 8 is attached to the fixed portion 5.

Next, the attachment state of this apparatus with respect to a door is demonstrated including FIG.2 and FIG.3 besides FIG.
In attaching the device, three holes for inserting the screw cylinders 3a, 3a and the drive shaft 9 into the door are formed at the position where the lock device is attached. In this case, the diameter of the holes on both sides is such that the screw cylinders 3a and 3a can be inserted, and the shaft hole 7b of the elevating plate driving member 7 is inserted in the center hole so that the shaft part 7b can rotate. Keep the size. For example, if the outer diameter of the shaft portion 7b is 10 mm, the diameter of the hole is about 11 mm. Incidentally, the holes on both sides only need to be able to be inserted into the screw cylinders 3a, 3a. For example, if the outer diameter of the screw cylinders 3a, 3a is 10 mm, the inner diameter of the holes may be about 10 mm.

  In the above state, if the screw cylinders 3a, 3a and the drive shaft 9 of the support portion 3 are inserted through predetermined holes and protrude from the surface of the door, engagement cylinders 5a, 5a (illustrated) formed on the fixed portion 5 are formed. In this state, only one of the engagement cylinders 5a is displayed) is inserted into the screw cylinders 3a and 3a. The screw cylinders 3a and 3a are formed longer than the engagement cylinders 5a and 5a. As a result, the doors having different thicknesses can be accommodated by changing the insertion depth. . In this state, the central drive shaft 9 protrudes outside the door through a hole formed in the door and an insertion hole 5b of the fixing portion 5.

  In the above-described state, the screw 10 is inserted through the engaging cylinder 5a, and the female screw part formed on the base of the screw cylinder 3a and the screw 10 are screwed together to fix the fixing part 5 and the main body part 1 through the door. Is fixed, and both are integrated. Next, the elevating plate 6 is disposed in the fixed portion 5 and the shaft portion 7 b of the elevating plate driving member 7 is inserted into the driving shaft 9. In the illustrated case, since the lock member is at the most advanced position with respect to the support portion 3 and is in a door lock state (described later), the drive plate 7a is attached to the lift shaft drive member 7 to the drive shaft 9. The elevating plate driving member 7 is fitted and fixed to the driving shaft 9 in the state of standing up like this.

  When the fixed portion 5 and the support portion 3 are fixed and the entire apparatus is attached to the door, the cover member 8 is attached to the fixed portion 5, and the screws 11 and 11 are screwed into the fixed portion 5 to cover the cover member. 8 is fixed and the installation of the apparatus is completed (see also FIG. 3).

Next, the operation state of the apparatus will be described together with the structure of the internal mechanism.
In FIG. 4, reference numeral 12 denotes a tension type coil spring disposed in the lock member 4, one end connected to a locking claw 4 a provided on the lock member 4 side, and the other end to the support portion 3 side. It is connected to the locking claw 3b provided in the. As a result, the lock member 4 is urged to move in the unlocking direction (direction B1 in FIG. 4).

  Reference numeral 13 denotes a latch that forms a part of the fixing means for the lock member, and is configured to swing around the fulcrum 14. The engaging portion 13 a is normally rotated in the C 1 direction by a resilient coil spring 15. It is energized as follows. Reference numeral 16 denotes an unlock button. In addition, the code | symbol D shows the door which is the attachment object of a locking device in a figure, and the code | symbol WL is a wall part adjacent to this door D, Comprising: Pin engagement of the lock member 4 in a locking position is attached to this wall part WL. An engagement pin 18 with which the portion 4b is engaged is provided.

  In the above configuration, when locking the door D, the lock member 4 is moved in the A1 direction against the tensile force of the coil spring 4a. When the latch 13 comes close to the locking body 3c projecting from the support portion 3 by this movement, the inclined surface portion 13b of the latch 13 gets over the locking body 3c projecting from the support section 3, and when the latch 13 moves further, the spring of the coil spring 15 is moved. It is rotated again in the C1 direction by the generated force, the engaging portion 13a of the latch 13 and the locking body 3c are engaged, and the lock member 4 is fixed at this position. At the position where the lock member 4 is fixed, the pin engaging portion 4b of the lock member is locked to the lock pin 18 fixed to the wall portion WL, and thereby the door D is fixedly locked to the wall portion WL by the lock member 4. Is done.

  In order to release the lock, the unlock button 16 is pressed. When the unlocking button 16 is pressed, the engaging portion 13a of the latch 13 is rotated in the C2 direction, the engaged state between the latching body 3c and the latch 13 is released, and then the lock member is contracted by the contraction of the coil spring 12. 4 automatically returns in the B1 direction and the door D is unlocked.

On the other hand, the display unit operates as follows in response to the operation of the lock member 4.
First, when the lock member 4 is in the unlocked state, that is, positioned in the B1 direction, the drive plate 7a in the display unit is in the state of rotating and sleeping in the B2 direction (see FIG. 6A). The elevating plate 6 is lowered by its own weight. As a result, the letters “OPEN” displayed on the fixed portion 5 are displayed on the window 8 a of the cover member 8.

  Subsequently, when the lock member 4 is moved in the direction of A1, the engagement body 17 formed at the end of the drive shaft 9 is engaged with the engagement body 4d provided on the lock member 4 at the lock position, and further. The moving plate 7a of the elevating plate driving member 7 connected to the driving body 9 is turned upright in the A2 direction together with the locking of the door D by the locking member 4 and the rotation in the A1 direction. As a result, the elevating plate 6 is raised as shown in FIG. 6B, and the characters “CLOSE” are displayed on the window 8 a of the cover member 8.

  When the unlocking button 16 is pressed to release the locking by the locking member 4, the locking member 4 moves in the B1 direction, and the engaging body 17 is locked to the locking body 4e of the locking member 4 when reaching the last retracted position. When the final retracted position is reached, the drive plate 7a is rotated in the B2 direction. As a result, the lift plate 6 is lowered by its own weight as shown in FIG. “OPEN” is displayed.

Next, the unlocking state cancellation at the time of emergency will be described.
The elevating plate driving member 7 and the drive shaft 9 connected to the elevating plate driving member 7 are both hollow, and when it is necessary to urgently unlock the door D in a locked state, a wire or a dedicated drive shaft 9 is used. The release pin is inserted through the insertion hole 8 b of the cover member 8, the insertion hole 7 c of the lifting plate driving member 7, and the insertion hole 9 a of the drive shaft 9. In a state where the lock member 4 locks the door D, the flat surface portion 13c of the latch 13 (indicated by reference numeral 13 'in FIG. 4) is positioned at the opening of the insertion hole 9a. For this reason, by pushing the wire or pin, the tip of the wire or pin presses the flat surface portion 13c of the latch 13, whereby the latch 13 rotates in the C2 direction against the elastic force of the coil spring 15, The engaged state with the locking body 3c is released. When the engagement state is released, the lock member 4 is automatically moved in the B1 direction by the contraction force of the coil spring 12, and the door D is unlocked.

  Although the reliability of the operation is slightly lowered, the configuration of the latch 13 is simplified by eliminating the flat surface portion 13c, and the slope portion 13b of the latch 13 is positioned at the opening portion of the insertion hole 9a. It is also possible to configure to press 13b.

  In the above embodiment, the lock / unlock state of the display unit 2 is displayed in English such as “CLOSE” and “OPEN”, but it can be displayed in Japanese such as “open” and “closed”, or open is blue and closed. Various display methods such as displaying red in a color such as red can be implemented.

  In each of the above examples, the locking device has been described as an example for household use such as a toilet, but since a large force is not required for locking and unlocking, and the operation part is a relatively simple operation centering on sliding, It can also be used in a work space where dust or dust is generated. Locking certainty and safety when locked in a space where outsiders do not like frequent entrances and exits, and when it is necessary to unlock from the outside in response to an emergency in the room It can be widely used in fields where both sexes need to be compatible.

It is a disassembled perspective view of the locking device of the door which shows the Example of this invention. It is a perspective view before attaching the cover member of the display part of the locking device of the door shown in FIG. It is a perspective view of the locking device of the door of the state which completed the attachment with respect to the door. It is a longitudinal cross-sectional view of the door locking device. It is a top view of the locking device of the door shown in FIG. The operating state of the elevating plate in the fixed part is shown, (A) shows the unlocked state of the door, and (B) shows the door locking / unloading party. It is a perspective view of the raising / lowering plate drive member which shows the relationship between the action | operation of a locking member and the raising / lowering plate drive member.

DESCRIPTION OF SYMBOLS 1 Door lock apparatus main body 2 Display part 3 Support part 3a Screw cylinder 3b (of support part) Locking claw 4 Lock member 4a Locking claw 4b (on lock member side) Pin (of lock member) Engaging portion 4d, 4e (locking member) engaging member 5 fixing portion 5a (fixing portion) engaging cylinder 5b (fixing portion) insertion hole 6 elevating plate 7 elevating plate driving member 7a (elevating plate driving member) Driving plate 7b Shaft portion (of lifting plate driving member) Insertion hole 8 Cover member 8a (Cover member) display window 8a (Cover member) insertion hole 9 Driving shaft 9a (Driving shaft) Insertion hole 10, 11 Screw 12 Coil spring (Tension spring)
13 Latch 13a (Latch) engagement part 13b (Latch) slope part 13c (Latch) plane part 14 Support point 15 Coil spring (elastic type)
16 Unlock button 17 Engagement body 18 Engagement pin D Door WL Wall

Claims (6)

In a door locking device that locks / unlocks a door by sliding a support portion, a lock device main body disposed inside the door, and a display provided on the outer surface of the door by communicating the lock device main body with the door The lock device main body has a support portion directly fixed to the door, and a lock member that slides relative to the support portion, and the display portion supports the lock device main body via the door. And a lift plate that has a fixed portion that is fixed to the outer surface of the door and a lift plate that is housed in the fixed portion, and the lift plate is connected to a drive shaft that rotates in response to sliding of the lock member. A drive plate forming a part of the member is arranged, and a cover member is attached to the fixed portion, and the drive plate is rotated in response to locking and unlocking of the lock member. As the door moves up and down, it locks through the window of the cover member. The door lock system, characterized in that configured to display the locking and unlocking of the members. The lock member has a lock member urging means for urging the lock member to move in the unlocking direction, and the lock member is fixed in a locked state against the urging of the lock member urging means. And a release means for releasing the fixation is arranged in the fixing means, and the lock member is automatically returned to the unlocked position by the biasing means when unlocked. The door locking device according to claim 1. The lock member urging means is a tension spring in which both ends thereof are respectively locked by a locking claw provided on the lock member side and a locking claw provided on the support portion. The door lock device described. The fixing means includes a latch that rotates about a fulcrum, and a latch provided on the support. The latch includes an engaging portion that latches with the latch, and a slope that is connected to the engaging portion. And the entire latch is biased so as to rotate in a direction in which the engaging portion and the locking body engage with each other about the fulcrum, and the slope portion is engaged by the movement of the lock member in the locking direction. The door locking device according to any one of claims 1 to 3, wherein the latch and the engaging body are automatically engaged after passing through the stopping body. The slope portion of the latch is located at the end of the drive shaft disposed in the support portion when the lock member is in the locking position, and the drive shaft and the lifting plate drive member connected to the drive shaft are formed hollow, By inserting a long object such as a wire from the outside of the door through the hollow portion, the inclined portion is pressed to release the engagement state between the latch and the locking body, and the lock member is urged by the lock member urging means. 5. The door locking device according to claim 4, wherein the door locking device is configured to automatically move in the unlocking direction. The front end of the slope portion of the latch is a flat portion, and when the lock member is in the locking position, the flat portion is configured to be located at the end of the drive shaft disposed in the support portion, and the long object is 6. The door locking device according to claim 5, wherein the door locking device is configured to press the flat portion so as to more reliably release the engagement state between the latch and the locking body.

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