JP2011256589A - Door lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door lock enabling a push-pull handle or lever handle to be used as a door handle without replacing the door lock.SOLUTION: A door lock 1 comprises: a turnable reversal latch 9; a stopper 26 which has a recess for restricting turning of the reversal latch 9 and another end of which is energized by a coil spring 30; a turning body 31 which presses the front face of a short side 29 of the stopper 26 to release fitting between a protrusion of the reversal latch 9 and the recess of the stopper 26; a door handle for turning the turning body 31; a latch presser 21; and a shaft 23 which has one end connected to the latch presser 21 and the other end energized by the coil spring 24. The central shaft of a lever handle is fitted to the shaft center of the turning body 31, and the turning body 31 is turned by operating the lever handle or by a push-pull handle abutting on an upper arm part 33 of the turning body 31.

Description

  The present invention relates to a door lock, and more particularly to a technology for a door lock incorporated in a wooden door provided in a room.

  As a conventional door lock, for example, a door push-pull lock described in Patent Document 1 is known. The push-pull lock for the door is attached to the linear motion rod that can be moved directly in the case and the tip of the linear motion rod in order to unlock the latch by operating two handles inside and outside the door. In addition, the urging force is always applied to the protruding latch position via the linear motion rod, and the door is locked by engaging with the strike metal fitting on the door side at the protruding latch position, and from the protruding latch position into the case according to the unlocking operation. A latch mechanism having a latch that can be unlocked by being retracted, and an unlocking mechanism that activates the retracting of the latch through a linear motion rod of the latch mechanism in response to a push-pull operation of the door handle. In response to the push-pull operation of the push-pull handle, the latch retracts into the case and the push-pull lock can be unlocked.

JP 2005-336958 A

  The unlocking operation mechanism that activates the backward movement of the latch through the direct acting rod of the latch mechanism is responsive to the operation of the push-pull handle. The demand for lever handles as wooden door handles is high, but when changing to lever handles, the door lock must be changed to one that is compatible with the lever handle, and the door lock is not replaced. The lever handle cannot be used.

Even after the door is installed, for example, if it can be easily changed from a push-pull handle to a lever handle, the taste can be improved.
An object of the present invention is to solve such a problem, and to provide a door lock that can be used by arbitrarily selecting a push-pull handle or a lever handle as a door handle without replacing the door lock. is there.

  In order to solve this problem, the present invention relates to a door lock housed in a recess on the end side opposite to the rotation pivot support side of the door, and an opening provided in a casing front end portion of the door lock A latch that protrudes from the latch locking hole formed in the vertical frame of the door, a first spring that biases the latch in a direction protruding from the opening of the casing, and a stopper that abuts against the rear portion of the latch And a second spring that urges the stopper in a direction to abut against the latch, and a pair of arm portions that extend in parallel and in the opposite direction from the center portion, so that one arm portion is interlocked with the stopper. The rotating body includes a rotating body that is locked and has a square hole at the center. The operating hole of the lever handle can be engaged with the square hole of the rotating body, or the push handles are provided on the mutually facing surfaces of the pair of arms. And the pull handle operating shaft can be contacted. Is shall.

  According to the first aspect of the present invention, the operating shaft of the lever handle can be engaged with the square hole of the rotating body, or the operating shafts of the push handle and the pull handle are applied to the mutually facing surfaces of the pair of arms. Since it can be contacted, a push-pull handle or a lever handle can be arbitrarily selected and used as a door handle without replacing the door lock.

1 is a longitudinal sectional view of a door lock 1 built in a door 2. FIG. It is a perspective view of the lock 1 for doors which removed the cover plate 41. FIG. It is a perspective view of the lock 1 for doors which removed the cover plate 41. FIG. 3 is a perspective view of an inversion latch 9. FIG. 2 is a perspective view of a latch receiver 15. FIG. 3 is a perspective view of a latch presser 21. FIG. 3 is a perspective view of a stopper 26. FIG. It is a perspective view of the lock 1 for doors by which the fitting of the stopper 26 and the inversion latch 9 was cancelled | released. It is the perspective view which looked at the casing 5 from the bottom face side. It is a front view of the lock 1 for doors which attached the cover plate 41. FIG. 3 is a perspective view of a pull handle 3. FIG. 3 is a perspective view of a push handle 4. FIG. FIG. 4 is a cross-sectional view of the door lock 1 in a state in which the engagement convex portion 14 of the inversion latch 9 and the concave portion 28 of the stopper 26 are fitted, cut along a cross section A. FIG. 3 is a cross-sectional view of the door lock 1 in a state in which the engagement between the engagement convex portion 14 of the inversion latch 9 and the concave portion 28 of the stopper 26 is released, taken along a cross section A. FIG. 3 is a cross-sectional view of the door lock 1 in a state in which the engagement between the engagement convex portion 14 of the reversing latch 9 and the concave portion 28 of the stopper 26 is released, taken along a cross section B. It is sectional drawing which cut | disconnected the lock 1 for doors of the state in which the inversion latch 9 inclined in the cross section B. FIG. FIG. 3 is a cross-sectional view of the door lock 1 in a state in which the inversion latch 9 is retracted to the inside rear of the casing 5 along a cross section A. 3 is a perspective view of a lever handle 46. FIG. 4 is a perspective view of a lever handle 47. FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a longitudinal sectional view of a door lock 1 built in a door. 2 and 3 are perspective views of the door lock 1 with the lid 41 removed. The door lock 1 built in the wooden door 2 provided in the room has two handles provided on the indoor side surface and the outdoor side surface of the door 2 at the end of the door 2 opposite to the rotary pivot side. 3 and a handle 4 between the handle 4. The casing 5 of the door lock 1 is made of resin and has a box shape in which the peripheral edge of the substantially rectangular bottom surface 6 rises. A front plate portion 7 is formed at the front end portion of the casing 5 so as to cover the front end portion, and an inversion latch 9 is supported by a latch receiver 15 in an opening portion 8 provided in the front plate portion 7. The front plate portion 7 is fitted from the front.

  FIG. 4 is a perspective view of the inversion latch 9, and FIG. 5 is a perspective view of the latch receiver 15. The metal inversion latch 9 includes a latch portion 13 having a back surface 11 and an inclined surface 12, and a block-shaped engagement convex portion 14 formed on both sides of the latch portion 13 and engaged with a stopper 26. Two cylindrical engaging portions 17 that are fitted into the groove portions 16 of the latch receiver 15 are further provided on both sides of the mating convex portion 14 on both sides.

  The latch receiver 15 includes a bottom surface portion 18 positioned in front and a side surface portion 19 rising rearward from both ends of the bottom surface portion 18 and has a substantially U-shaped cross section. An insertion port 20 through which the latch portion 13 of the reversing latch 9 is inserted is formed on the bottom surface portion 18, and two groove portions 16 into which the engaging portions 17 of the reversing latch 9 are fitted are formed inside each side surface portion 19. The The inversion latch 9 is supported by the latch receiver 15 in a state where the latch portion 13 is inserted into the insertion port 20 of the latch receiver 15 and the engaging portion 17 is inserted into the groove portion 16.

  FIG. 6 is a perspective view of the latch presser 21. A resin-made latch retainer 21 is installed behind the inversion latch 9 supported by the latch receiver 15. The latch retainer 21 is installed in a state in which the latch retainer 21 is urged by a coil spring 24 via a connecting bar 23 described later and is in contact with the inversion latch 9. The latch retainer 21 is configured such that the shoulders 60 on both sides of the convex portion 25 having an arcuate cross section are in pressure contact with the rear outer peripheral surface 10 of the reversing latch 9, and the engaging portion 17 of the reversing latch 9 contacts the bottom surface portion 18 of the latch receiver 15. Installed in contact. A fitting bar 22 (see FIG. 1) formed in the rear portion of the latch retainer 21 is fitted with a metal-made substantially cylindrical connecting bar 23 urged by a coil spring 24. The rear outer peripheral surface 10 of the reverse latch 9 with which the shoulder portion 60 of the latch retainer 21 abuts is formed in a substantially arc shape, and a force is applied to the rear surface 11 of the latch portion 13 of the reverse latch 9 so that the reverse latch 9 rotates and tilts. When the force applied to the back surface 11 is released from this state, the reversing latch 9 is rotated in the opposite direction by the spring force of the coil spring 24 to return to the initial state where no force is applied to the back surface 11.

  FIG. 7 is a perspective view of the stopper 26. A stopper 26 made of resin and having a substantially L-shaped cross section is provided above the latch retainer 21. The stopper 26 is formed with a concave portion 28 that fits into the engaging convex portion 14 of the reversing latch 9 at the front end portion of the L-shaped long side 27 and is urged by a coil spring 30 that abuts the L-shaped short side 29. The The short side 29 is provided with an escape hole 61 for avoiding contact with the connecting bar 23.

  A metal rotating body 31 is installed below the stopper 26. The rotating body 31 includes a cylindrical portion 32 having a rotation axis, and an upper arm portion 33 and a lower arm portion 34 that extend in parallel with each other in the vertical direction from the end portion of the cylindrical portion 32. A through hole 35 having a square cross section is formed in the rotational axis of the rotating body 31, and a rotation bar 48 of a lever handle 46 described later is inserted into the through hole 35 (see FIG. 18).

  FIG. 8 is a perspective view of the door lock 1 in which the fitting between the stopper 26 and the reverse latch 9 is released. When the lever handles 46 and 47 with the rotation bar 48 inserted through the through hole 35 are rotated, or the push-pull handles 3 and 4 shown in FIGS. When the rotating body 31 is rotated with the operating shaft 37 of the push handle 4 in contact with the lower arm portion 34 in contact with the portion 33, the upper arm portion 33 contacts the front surface 38 of the short side 29 of the stopper 26, The stopper 26 is pressed backward against the spring force of the coil spring 30. When the stopper 26 moves rearward, the fitting between the concave portion 28 of the stopper 26 and the engaging convex portion 14 of the reverse latch 9 is released. An escape groove 39 is formed at the end of the upper arm 33 of the rotating body 31 in order to prevent the connecting bar 23 disposed above the rotating body 31 from coming into contact.

  FIG. 9 is a perspective view of the casing 5 as seen from the bottom side, and FIG. 10 is a front view of the door lock 1 to which the cover plate 41 is attached. Stepped portions 40 are provided on both end surfaces of the cylindrical portion 32, and the stepped portions 40 are fitted into round holes 44 and 45 formed in the casing bottom surface 6 and a lid plate 41 to be described later, so that the rotating body 31 is freely rotatable. Supported by

  The cover plate 41 is screwed and fixed to the casing 5 at four positions in a state where the fitting convex portion 42 provided on the front end face is fitted in the engaging groove 43 formed in the front plate portion 7 of the casing 5. . Further, the front plate 59 is screwed to the door 2 in a state where the front plate 59 is mounted on the front plate portion 7.

  The operation of the door lock 1 using the push-pull handles 3 and 4 will now be described. FIG. 11 is a perspective view of the pull handle 3, and FIG. 12 is a perspective view of the push handle 4. When the push-pull handles 3 and 4 are used, one handle is the pull handle 3 and the other is the push handle 4. Both the pull handle 3 and the push handle 4 are provided with operating shafts 36 and 37 projecting vertically from the handle portion. The operating shaft 36 of the pull handle 3 is installed above the axis of the rotating body 31, and the push handle. The operation shaft 37 of 4 is installed below the axis of the rotating body 31. The operating shaft 36 of the pull handle 3 and the operating shaft 37 of the push handle 4 are arranged at substantially equal distances from the axis of the rotating body 31 in the vertical direction. When the handle portion of the pull handle 3 is pulled, the operating shaft 36 is connected to the door 2. When the tilting upper arm 33 is pushed rearward to the rotation pivot side and the handle of the push handle 4 is pushed, the operating shaft 37 tilts to the opposite side of the door 2 from the rotation pivot side and pushes the lower arm 34 forward. .

  13 is a cross-sectional view of the door lock 1 in a state in which the engagement convex portion 14 of the reversing latch 9 and the concave portion 28 of the stopper 26 are fitted, cut along a cross section A. FIG. 14 is a cross-sectional view of the door lock 1 in a state in which the engagement between the engagement convex portion 14 of the reversing latch 9 and the concave portion 28 of the stopper 26 is released, taken along a cross section A. FIG. As shown in FIG. 13, the rotating body 31 is rotated by the operation of the push-pull handles 3, 4 from the state where the engaging convex portion 14 of the reversing latch 9 is fitted in the concave portion 28 of the stopper 26, and the upper arm of the rotating body 31. The end of the portion 33 abuts against the front surface 38 of the short side 29 of the stopper 26 and moves the stopper 26 backward against the spring force of the coil spring 30. Then, as shown in FIG. 14, the engagement between the engaging convex portion 14 of the inversion latch 9 and the concave portion 28 of the stopper 26 is released. 15 is a cross-sectional view of the door lock 1 in a state where the engagement between the engagement convex portion 14 of the reversing latch 9 and the concave portion 28 of the stopper 26 is released, cut along a cross section B shown in FIG. When the back surface 11 of the latch portion 13 of the reversing latch 9 with the stopper 26 released receives a force, the reversing latch 9 rotates in the direction of the arrow and the back surface 11 is inclined. FIG. 16 is a cross-sectional view of the door lock 1 in a state where the inversion latch 9 is inclined, cut along a cross section B. When the back surface 11 of the inclined reversing latch 9 receives further force, the reversing latch 9 moves backward together with the latch retainer 21 and the connecting bar 23 against the force of the coil spring 24 inside the casing 5. FIG. 17 is a cross-sectional view of the door lock 1 in a state in which the reversing latch 9 is retracted rearward inside the casing 5 along a cross section B. When the door 2 is opened and the force applied to the back surface 11 is released, the reverse latch 9 retracted into the casing 5 is pushed by the latch retainer 21 biased by the coil spring 24 and protrudes from the front plate 59. Rotate to return to the initial state (see FIG. 15) in which the back surface 11 is oriented substantially in the horizontal direction.

  When the door 2 is closed, a force is applied to the inclined surface 12 of the latch portion 13, and the reversing latch 9 has both the spring force of the coil spring 24 that urges the latch retainer 21 and the coil spring 30 that urges the stopper 26. Against this, the latch presser 21, the connecting bar 23, and the stopper 26 are moved back into the casing 5. Since the force applied to the inclined surface 12 of the latch portion 13 is released when the door 2 is completely closed, the reverse latch 9 protrudes from the front plate 59 by the spring force of the coil springs 24 and 30. When the push-pull handles 3 and 4 are used, the door is opened and closed in this way.

  Next, the operation of the door lock 1 using the lever handles 46 and 47 will be described. However, the description of the portions overlapping the operation of the door lock 1 using the push-pull handles 3 and 4 will be omitted. FIG. 18 is a perspective view of the lever handle 46, and FIG. 19 is a perspective view of the lever handle 47. A rotation bar 48 having a square cross section is provided on the rotation axis of one handle 46, and a hole in which the rotation bar 48 is fitted is formed on the rotation axis of the other handle 47. The two lever handles 46, 47 are in a state in which the rotation bar 48 of the lever handle 46 is inserted into the through hole 35 formed in the axis of the rotation body 31 and is fitted into the hole 49 of the other handle 47. Thus, it is installed on the indoor side surface and the outdoor side surface of the door 2. In the lever handles 46 and 47 installed on the indoor side surface and the outdoor side surface, the upper arm portion 33 of the rotating body 31 abuts on the front surface 38 of the short side 29 of the stopper 26 with the handles 50 and 51 lowered, respectively. The stopper 26 is moved backward against the spring force.

  4 and 5, the shape of the inversion latch 9 and the latch receiver 15 is symmetrical with respect to the horizontal plane, so that the latch receiver 15 engaged with the inversion latch 9 is turned upside down in the casing 5. It is possible to install. By reversing the mounting direction of the latch receiver 15 engaged with the inversion latch 9, both the left-handed door 2 and the right-handed door 2 can be easily handled.

  Sliding convex portions 52 and 53 are formed on both side surfaces of the latch retainer 21 and the stopper 26 in the horizontal direction, and the sliding retainers 52 and 53 are formed on the bottom surface 6 of the casing 5 and the lid plate. In the state engaged with the guide grooves 54, 55, 56, 57 provided in 41, it is possible to move smoothly in the horizontal direction. Moreover, the support part 58 which supports the connection bar 23 is provided in the bottom face 6 of the casing 5, and the connection bar 23 can be moved smoothly in a horizontal direction. In addition, the bottom surface 6 of the casing 5 and the cover plate 41 have two lever handles 46 and 47 when the escape holes of the operating shafts 36 and 37 of the pull handle 3 and the push handle 4 and the lever handles 46 and 47 are used. Are provided with relief holes for bolts, which will not be described in detail.

  In this way, the door lock 1 is housed in the recess on the end side opposite to the rotary pivot side of the door 2, and protrudes from the opening 8 provided at the front end of the casing 5 of the door lock 1. The reversing latch 9 that is latched in the latch retaining hole formed in the vertical frame of the door 2, the coil spring 24 that biases the reversing latch 9 in the direction protruding from the opening 8 of the casing 5, and the reversing latch 9 A stopper 26 that contacts the rear portion, a coil spring 30 that urges the stopper 26 in a direction to contact the reversing latch 9, and a pair of upper arm portion 33 and lower arm portion 34 that extend in parallel and opposite directions from the center portion. The upper arm 33 is engaged with the stopper 26 and is engaged with a rotating body 31 having a through hole 35 at the center. The through hole 35 of the rotating body 31 has lever handles 46 and 47. The pivot bar 48 is engageable, or Since the operation shafts 36 and 37 of the push handle 4 and the pull handle 3 can be brought into contact with the mutually facing surfaces of the upper arm portion 33 and the lower arm portion 34, the door handle 1 can be pushed as a door handle without replacement. The pull handles 3 and 4 or the lever handles 46 and 47 can be arbitrarily selected and used.

DESCRIPTION OF SYMBOLS 1 Door lock 2 Door 3 Pull handle 4 Push handle 5 Casing 6 Bottom part 7 Front plate part 8 Opening part
9 reverse latch 10 outer peripheral surface 11 back surface 12 inclined surface 13 latch portion 14 engaging convex portion 15 latch receiving 16 groove portion 17 engaging portion 18 bottom surface portion 19 side surface portion 20 engaging 21 latch holding 22 fitting hole 23 connecting bars 24, 30 Coil spring 25 Contact surface 26 Stopper 27 Long side 28 Recess 29 Short side 31 Rotating body 32 Cylindrical part 33 Upper arm part 34 Lower arm part 35 Through hole 36, 37 Actuation shaft 38 Front face 39 Relief groove 40 Stepped part 41 Cover plate 42 Fitting convex part 43 Engaging groove 44, 45 Round hole 46, 47 Lever handle 48 Rotating bar 49 Hole part 50, 51 Handle 52, 53 Sliding convex part 54, 55, 56, 57 Guide groove 58 Support part 59 Front Plate 60 Shoulder 61 Relief hole

Claims (1)

A door lock housed in a recess on the side opposite to the rotation pivot side of the door,
A latch that protrudes from an opening provided in the front end of the casing lock for the door and is locked in a latch locking hole formed in the vertical frame of the door, and urges the latch in a direction protruding from the opening of the casing. A first spring; a stopper that abuts against the rear portion of the latch; a second spring that urges the stopper in a direction to abut against the latch; and a pair of arm portions that extend in parallel and opposite directions from the central portion. One arm portion is engaged with the stopper, and a rotating body having a square hole in the central portion, and an operating shaft of a lever handle can be engaged in the square hole of the rotating body, or A lock for a door, characterized in that an operation shaft of a push handle and a pull handle can be brought into contact with surfaces of the pair of arms facing each other.

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