JP6193341B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device.

  The door lock described in Patent Document 1 is horizontally attached to the inner wall surface of the door, and is locked and unlocked by a one-touch operation. In a state where the door is closed, the door dead plate is engaged with and disengaged from the receiving hole of the receiving metal, so that locking and unlocking are performed.

JP 2001-107622 A

  When the door is open, the locking operation may be performed by mistake. By this locking operation, the dead plate protrudes from the door. After that, when I tried to close the door, the dead plate hit the bracket and the door did not close. In addition, the dead plate and the metal fitting may be damaged.

  The present invention has been made in view of the above problems, and mainly provides a locking device that can be unlocked by closing the door when the locking operation is mistakenly performed with the door open. Objective.

In order to solve the above problems, according to one aspect of the present invention,
A locking device that locks a door that opens and closes an opening of a wall in a closed state,
A dead bolt that slides between a locking position that is provided in the door and is inserted into a locking hole of a receptacle provided on the wall, and an unlocking position that is extracted from the locking hole;
Energizing the dead bolt in the locking position from an intermediate position between the locking position and the unlocking position toward the locking position, and the unlocking position from the intermediate position toward the unlocking position and an elastic member for urging said deadbolt in,
The dead bolt has an inclined surface inclined with respect to the sliding direction of the dead bolt,
When the door is rotated from the open state to the closed state, the inclined surface of the dead bolt in the locked position is pressed by the receiving member, so that the dead bolt is moved from the locked position to the unlocked position. A sliding locking device is provided.

  According to one aspect of the present invention, there is provided a locking device that is unlocked by closing a door when a locking operation is mistakenly performed with the door open.

It is a perspective view which shows the door to which the locking device and locking device by one Embodiment are attached. It is a perspective view which shows the locking device by one Embodiment. It is a perspective view which decomposes | disassembles and shows the locking device by one Embodiment. It is sectional drawing which shows the state at the time of locking of the locking device by one Embodiment. It is sectional drawing which shows the state at the time of unlocking of the locking device by one Embodiment. It is sectional drawing which shows the locking position of the deadbolt by one Embodiment. It is sectional drawing which shows the intermediate position of the deadbolt by one Embodiment. It is sectional drawing which shows the unlocking position of the deadbolt by one Embodiment. It is sectional drawing which shows the slide cam and slide cam guide groove by one Embodiment. It is sectional drawing which shows the closing operation | movement of the door of FIG. FIG. 11 is a cross-sectional view illustrating a door closing operation following FIG. 10. FIG. 12 is a cross-sectional view illustrating the door closing operation following FIG. 11.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In each of the drawings, the same or corresponding components are denoted by the same or corresponding reference numerals, and description thereof will be omitted. In each drawing, the X direction, the Y direction, and the Z direction are directions perpendicular to each other. The X direction is a sliding direction of a dead bolt attached to the door. The Y direction is a direction perpendicular to the door. The Z direction is the rotation axis direction of the door.

  FIG. 1 is a perspective view showing a locking device and a door locked by the locking device according to an embodiment. The locking device 10 locks the door 4 that opens and closes the opening of the wall 2 in a closed state. The door 4 is rotated about the rotation axis of the hinge 6 to open and close the opening of the wall 2. The opening of the wall 2 is an entrance / exit of a person, for example, an entrance / exit of a building, an entrance / exit of a room inside the building, an entrance / exit of a vehicle, and an entrance / exit of a room inside the vehicle. An operation handle 8 used for opening / closing the door 4 is attached to the door 4. The operation handle 8 is not used for operating the locking device 10.

  FIG. 2 is a perspective view showing a locking device according to an embodiment. FIG. 3 is an exploded perspective view showing the locking device according to the embodiment. The locking device 10 includes a receiver 20 and a lock body 30.

  The receptacle 20 is provided on the wall 2 shown in FIG. The receiving device 20 is provided separately from the wall 2, but may be provided as a part of the wall 2, and in this case, the receiving device 20 may not be included in the locking device 10. The receiving device 20 has a locking hole 21 as shown in FIG.

  The lock body 30 is provided on the door 4 shown in FIG. As shown in FIGS. 2 and 3, the lock body 30 includes a case 40, a dead bolt 50, a compression spring 60, a slide cam 70, and an operation switch 80, for example.

  The case 40 is attached to the door 4. The case 40 supports, for example, a dead bolt 50, a compression spring 60, a slide cam 70, and an operation switch 80. The dead bolt 50 is supported to be slidable in the X direction, the compression spring 60 is supported to be elastically deformable in the Z direction, the slide cam 70 is supported to be slidable in the Z direction, and the operation switch 80 rotates about the Z axis. It is supported freely. The case 40 has a base 41 and a cover 42.

  The base 41 is attached to the door 4. As shown in FIG. 3, the base 41 includes, for example, a dead bolt guide groove 43, a slide cam guide groove 45, and a compression spring holding groove 47.

  The dead bolt guide groove 43 guides the dead bolt 50 in the X direction. The dead bolt 50 protrudes from the case 40 in the X direction and is inserted into the locking hole 21 of the receiving tool 20.

  The slide cam guide groove 45 guides the slide cam 70 in the Z direction. The slide cam guide groove 45 is formed on the bottom wall surface of the dead bolt guide groove 43, for example.

  The compression spring holding groove 47 holds the compression spring 60 so as to be elastically deformable in the Z direction. The compression spring holding groove 47 is formed on the side wall surface of the dead bolt guide groove 43, for example.

  The cover 42 is attached to the base 41 and covers the dead bolt 50 and the like. An operation hole 49 is formed in the cover 42, and an operation switch 80 projects from the operation hole 49. When the operator operates the operation switch 80, the dead bolt 50 slides.

  The operation switch 80 is a rocker switch, for example, and rotates around a rotation shaft 83. The axial direction of the rotation shaft 83 is, for example, the Z direction. The operation switch 80 includes a lock button 81 and an unlock button 82. The locking button 81 is used for locking, and the unlocking button 82 is used for unlocking.

  The type of operation switch 80 is not limited to the rocker switch, and may be a slide switch, a push button switch, a toggle switch, or the like.

  When the door 4 is in a closed state, only the operator inside the door 4 (the lock body 30 side of both sides of the door 4) can operate the operation switch 80. When the door 4 is closed, the operation switch 80 cannot be operated from the outside of the door 4.

  Note that the operation switch 80 may not be provided, and the operator may operate by holding the dead bolt 50. Also in this case, when the door 4 is in the closed state, only an operator inside the door 4 can grasp and operate the dead bolt 50.

  FIG. 4 is a cross-sectional view showing a state when the locking device according to the embodiment is locked. FIG. 5 is a cross-sectional view illustrating a state when the locking device according to the embodiment is unlocked.

  The dead bolt 50 slides in the X direction between a locked position (see FIG. 4) and an unlocked position (see FIG. 5). The locking position is a position where the dead bolt 50 is inserted into the locking hole 21. The unlocking position is a position where the dead bolt 50 is extracted from the locking hole 21.

  As shown in FIG. 4, the door 4 is closed and the dead bolt 50 is inserted into the locking hole 21 to lock the door. As shown in FIG. 5, the door 4 is closed, and the dead bolt 50 is extracted from the locking hole 21, thereby unlocking.

  The dead bolt 50 includes a motion conversion unit 51 that converts the rotational motion of the operation switch 80 into the linear motion of the dead bolt 50. For example, as shown in FIGS. 4 and 5, the motion conversion unit 51 is formed in an isosceles trapezoidal shape when viewed in the Z direction, and has a first motion conversion unit 51 </ b> A on one leg of the isosceles trapezoid, The other leg has a second motion converter 51B.

  The first motion conversion unit 51A converts the rotational motion of the operation switch 80 when the locking button 81 is pressed into the linear motion of the dead bolt 50 from the unlocked position toward the locked position. The first motion converter 51A is configured by an inclined surface that approaches the operation hole 49 of the cover 42 as it goes in the locking direction (leftward in FIGS. 4 and 5), for example.

  The second motion conversion unit 51B converts the rotational motion of the operation switch 80 when the unlock button 82 is pressed into the linear motion of the dead bolt 50 from the locked position toward the unlocked position. The second motion conversion unit 51B is configured by an inclined surface that approaches the operation hole 49 of the cover 42 in the unlocking direction (rightward in FIGS. 4 and 5), for example.

  The operation switch 80 has a position display portion 85 that indicates the current position of the dead bolt 50. The position display unit 85 has at least one of a color, a character, a mark, and the like, and alerts the operator. The position display unit 85 is configured by a seal or an LED. The operator can know the current position of the dead bolt 50 by looking at the position display unit 85.

  For example, the position display unit 85 is hidden by the cover 42 at the time of unlocking and appears from the cover 42 at the time of locking, thereby indicating that the current position of the dead bolt 50 is the locked position. The position display unit 85 is provided on the side surface of the unlock button 82, for example, and is hidden by the cover 42 when the unlock button 82 is pressed, and appears from the cover 42 when the lock button 81 is pressed.

  It should be noted that the position display unit 85 may indicate that the current position of the dead bolt 50 is the unlocked position by being hidden by the cover 42 when locked and appearing from the cover 42 when unlocked. The position display portion 85 is provided on the side surface of the locking button 81, for example, and is hidden by the cover 42 when the locking button 81 is pressed, and appears from the cover 42 when the unlocking button 82 is pressed. Both a position display unit indicating that the current position of the deadbolt 50 is a locked position and a position display unit indicating that the current position of the deadbolt 50 is an unlocked position may be provided.

  FIG. 6 is a cross-sectional view illustrating a dead bolt locking position according to an embodiment. FIG. 7 is a cross-sectional view showing an intermediate position of a dead bolt according to an embodiment. FIG. 8 is a cross-sectional view showing the unlocking position of the dead bolt according to one embodiment.

  The compression spring 60 biases the dead bolt 50 from the intermediate position toward the locking position, and biases the dead bolt 50 from the intermediate position toward the unlocking position. The intermediate position is a position between the locked position and the unlocked position. The intermediate position may have a certain length in the X direction.

  As the dead bolt 50 moves from the locked position (see FIG. 6) to the intermediate position (see FIG. 7), the amount of elastic deformation of the compression spring 60 increases, and the dead bolt 50 moves from the unlocked position (see FIG. 8) to the middle. The elastic deformation amount of the compression spring 60 increases toward the position (see FIG. 7). The compression spring 60 urges the dead bolt 50 from the intermediate position toward the locking position and urges the dead bolt 50 from the intermediate position toward the unlocking position by the elastic restoring force.

  The dead bolt 50 has a cam groove 52 that changes the slide of the dead bolt 50 in the X direction to the slide of the slide cam 70 in the Z direction. The center portion in the X direction of the cam groove 52 protrudes to one side in the Z direction (more specifically, the direction in which the compression spring 60 is compressed) than both ends in the X direction of the cam groove 52.

  The slide cam 70 elastically deforms the compression spring 60 in the Z direction by sliding in the Z direction. The compression spring 60 urges the dead bolt 50 from the intermediate position toward the locking position and urges the dead bolt 50 from the intermediate position toward the unlocking position by the elastic restoring force.

  In this embodiment, the compression spring 60 is used as the elastic member, but a tension spring, a torsion spring, or the like may be used instead of the compression spring 60, and the type of the elastic member is not particularly limited. The elastic member may be any member that urges the dead bolt 50 from the intermediate position toward the locking position and urges the dead bolt 50 from the intermediate position toward the unlocking position.

  FIG. 9 is a cross-sectional view showing a slide cam and a slide cam guide groove according to an embodiment.

  The slide cam guide groove 45 has a convex portion 46 parallel to the guide direction of the slide cam 70 (perpendicular to the paper surface in FIG. 9) on the side wall surface. The protrusions 46 are provided on the side wall surfaces on both sides in the X direction (left and right sides in FIG. 9) in FIG. 9, but may be provided only on the side wall surfaces on one side in the X direction.

  On the other hand, the slide cam 70 has a concave portion 71 into which the convex portion 46 is fitted. In FIG. 9, a plurality of concave portions 71 are provided corresponding to the plurality of convex portions 46, but when the number of convex portions 46 is one, the number of concave portions 71 may be one.

  By fitting the convex portion 46 of the slide cam guide groove 45 and the concave portion 71 of the slide cam 70, the direction of the elastic restoring force of the compression spring 60 against the slide cam 70 is stabilized, and the posture of the slide cam 70 is changed. Can be stabilized.

  In addition, the arrangement | positioning of a convex part and a recessed part may be reverse. That is, the slide cam guide groove 45 may have a recess parallel to the guide direction of the slide cam 70 on the side wall surface. In this case, the slide cam 70 has a convex part fitted in the concave part. The posture of the slide cam 70 can be stabilized.

  When the convex portion 46 is formed on the side wall surface of the slide cam guide groove 45, it does not have to be formed over the entire longitudinal direction of the slide cam guide groove 45. The convex part 46 should just be formed in the movement range of the slide cam 70 when the dead bolt 50 moves between the locking position and the unlocking position.

  The slide cam 70 is placed in the slide cam guide groove 45 in a range where the convex portion 46 is not formed (the lower portion of the slide cam guide groove 45 in FIGS. 6 to 8). Thereafter, the slide cam 70 is slid in the guide direction, so that the convex portion 46 and the concave portion 71 are fitted. The assembly workability of the locking device 10 is good.

  FIG. 10 is a cross-sectional view showing the closing operation of the door of FIG. FIG. 11 is a cross-sectional view showing the door closing operation following FIG. FIG. 12 is a cross-sectional view showing the door closing operation following FIG.

  As shown in FIG. 10, when the door 4 is in an open state, the operator may accidentally press the locking button 81, and the dead bolt 50 may be slid from the unlocked position to the locked position. At this time, the position display unit 85 indicates that the current position of the dead bolt 50 is the locked position. Thereby, an operator's attention can be alerted.

  The operator may try to turn the door 4 from the open state to the closed state without noticing the display on the position display unit 85. In this case, as shown in FIG. 11, the inclined surface 53 of the dead bolt 50 in the locked position is pressed by the receiving tool 20.

  The inclined surface 53 of the dead bolt 50 is inclined with respect to the sliding direction (X direction) of the dead bolt 50, and the dead bolt 50 is slid from the locked position by the X direction component force of the pressing force by the receiving tool 20, The intermediate position is exceeded (see FIG. 12). When the dead bolt 50 exceeds the intermediate position, the dead bolt 50 is moved to the unlocked position by the elastic restoring force of the compression spring 60. Therefore, the door 4 can be closed and damage to the dead bolt 50 and the receiving tool 20 can be suppressed. Further, since the dead bolt 50 is biased from the intermediate position toward the unlocked position, the dead bolt 50 does not return from the release position to the locked position unless another operator exists inside the door 4. That is, the dead bolt 50 does not return from the unlocked position to the locked position when no one is inside the door 4, thereby preventing a person from being locked out of the door 4.

  As mentioned above, although embodiment of the locking device, etc. were described, this invention is not limited to the said embodiment etc., In the range of the summary of this invention described in the claim, various deformation | transformation and improvement Is possible.

2 Wall 4 Door 6 Hinge 8 Operation handle 10 Locking device 20 Locking device 21 Locking hole 30 Locking body 40 Case 41 Base 42 Cover 43 Dead bolt guide groove 45 Slide cam guide groove 46 Convex portion 47 Compression spring holding groove 50 Dead bolt 51 Movement Conversion unit 51A First motion conversion unit 51B Second motion conversion unit 52 Cam groove 60 Compression spring 70 Slide cam 71 Recess 80 Operation switch 81 Lock button 82 Unlock button 83 Rotating shaft 85 Position display unit

Claims (9)

A locking device that locks a door that opens and closes an opening of a wall in a closed state,
A dead bolt that slides between a locking position that is provided in the door and is inserted into a locking hole of a receptacle provided on the wall, and an unlocking position that is extracted from the locking hole;
Energizing the dead bolt in the locking position from an intermediate position between the locking position and the unlocking position toward the locking position, and the unlocking position from the intermediate position toward the unlocking position and an elastic member for urging said deadbolt in,
The dead bolt has an inclined surface inclined with respect to the sliding direction of the dead bolt,
When the door is rotated from the open state to the closed state, the inclined surface of the dead bolt in the locked position is pressed by the receiving member, so that the dead bolt is moved from the locked position to the unlocked position. Slide, locking device. As the dead bolt moves from the locked position to the intermediate position, the amount of elastic deformation of the elastic member increases,
And the amount of elastic deformation of the said elastic member becomes large as the said dead bolt goes to the said intermediate position from the said unlocking position, The locking device of Claim 1 characterized by the above-mentioned. A slide cam that slides in a direction perpendicular to the sliding direction of the dead bolt;
The dead bolt has a cam groove for changing the direction of the slide of the dead bolt to the slide of the slide cam,
The locking device according to claim 1, wherein the slide cam slides to elastically deform the elastic member.   The locking device according to claim 3, further comprising a base having a dead bolt guide groove for guiding the dead bolt and a slide cam guide groove for guiding the slide cam. The slide cam guide groove has a protrusion parallel to the guide direction of the slide cam on the side wall surface of the slide cam guide groove,
The locking device according to claim 4, wherein the slide cam has a concave portion into which the convex portion is fitted. The slide cam guide groove has a recess parallel to the guide direction of the slide cam on the side wall surface of the slide cam guide groove,
The locking device according to claim 4, wherein the slide cam has a convex portion fitted into the concave portion.   The locking device according to claim 1, further comprising an operation switch that slides the dead bolt. The operation switch rotates about a rotation axis perpendicular to the sliding direction of the dead bolt,
The locking device according to claim 7, wherein the deadbolt includes a motion conversion unit that converts a rotational motion of the operation switch into a linear motion of the deadbolt. A cover that covers the dead bolt;
The locking device according to claim 7 or 8, wherein the operation switch includes a position display unit that indicates a position of the dead bolt.

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