JP2013189843A - Latch lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a latch lock which hardly causes trouble and gives good operational feeling, without restricting the opening direction of a door.SOLUTION: A latch lock 1 includes: a pair of handles 4, 44 fixed to the indoor and outdoor sides of wall surfaces 3, 49 of a door 2, respectively; levers 7, 47 rotatably supported to the handles 4, 44; latch bars 8, 48 rotating in accordance with rotation of the levers 7, 47; a latch bolt installed so as to be movable forward and backward with respect to the butt end of the door 2; and a lock piece capable of switching its attitude between a first attitude restricting withdrawal of the latch bolt from the butt end by locking the latch bolt and a second attitude allowing the withdrawal of the latch bolt from the butt end by releasing the locking of the latch bolt, in accordance with the rotation of the latch bars 8, 48.

Description

  The present invention relates to a latch lock that holds a door closed by a latch bolt.

  Conventionally, a so-called “latch lock” is well known as a lock structure for holding a door in a closed state (temporarily tightened state). This “latch lock” holds the door closed by engaging a latch such as a latch bolt protruding from the door with a strike provided on the door frame or the like.

  As such a latch lock, Patent Document 1 discloses a handle (see “Handle 2”) fixed to the surface of the door, a lever attached to the handle, a latch that is moved along the back surface of the door by the lever, What is provided is disclosed.

Japanese Utility Model Publication No. 4-82271

  In the latch lock described in Patent Document 1, since the latch moves along the back surface of the door, the strike with which the latch engages is a member facing the back surface of the door (in Patent Document 1, “6 per door 6 )). Therefore, it is structurally impossible to open the door to the back side, and the door opening direction is limited to the front side. Therefore, the latch lock cannot be used as a so-called “push-pull lock” that can open the door by either pushing the handle or pulling the handle.

  In view of the above circumstances, an object of the present invention is to use a latch lock with less malfunction and good operation feeling without restricting the door opening direction.

  The latch lock according to the present invention includes a pair of handles each fixed to the interior and exterior of the wall surface of the door, a lever rotatably supported by each handle, a latch bar that rotates as the lever rotates, A latch bolt provided to be able to move forward and backward with respect to the door end of the door, a first posture for locking the latch bolt and restricting the retraction of the latch bolt from the end of the door, and release of the latch bolt. And a latching piece whose posture can be switched with the rotation of the latch bar between the second posture enabling the latch bolt to be retracted from the mouth.

  As described above, the latch bolt is provided so as to be able to advance and retreat with respect to the door mouth, so that the strike for engaging the latch bolt can be provided not on the member facing the wall surface of the door but on the member facing the door mouth. . Therefore, there is no possibility that the opening direction of the door is restricted by the member provided with the strike, and for example, a latch lock can be used as a push-pull lock.

  Also, by fixing each handle inside and outside the wall surface of the door, it is possible to reduce the number of movable members compared to the case where the handle is rotated together with the lever. The frequency can be reduced. In addition, since the latch bar is rotated in accordance with the rotation of the lever and the handle does not need to be rotated, the force required for rotating the latch bar can be reduced and the operational feeling can be improved. .

At least one of the handles includes a lever insertion portion having an opening on the rear side, and the lever is inserted into the lever insertion portion and is provided to be rotatable in the front-rear direction around the rotation axis. When rotating, it may be biased by a biasing means so that at least a part protrudes to the rear side of the handle via the opening.
By adopting such a configuration, the lever can be rotated in conjunction with the operation of pulling the handle forward to open the door.

  At least one of the handles includes a lever insertion portion having an opening on the front side, and the lever is inserted into the lever insertion portion, is provided to be rotatable in the front-rear direction around the rotation axis, and is rotated to the front side. Sometimes, it may be biased by a biasing means so that at least a part protrudes to the front side of the handle via the opening.

  By adopting such a configuration, the lever can be rotated in conjunction with the operation of pressing the handle rearward to open the door.

  The latch bar may be fixed to the lever and rotate in the same direction as the lever.

  By adopting such a configuration, the configuration of the latch lock can be simplified as compared with the case where the latch bar and the lever are connected via a separate member.

  The latch bar may be connected to the lever via a link and rotate in a direction opposite to the lever.

  By adopting such a configuration, it is possible to cope with a case where the direction in which the latch bar is to be rotated is opposite to the rotation direction of the lever.

  The rotation axis of the latch bar may be the same as the rotation axis of the lever. In this case, the configuration of the latch lock is simplified, and the number of parts can be reduced.

  The rotating shaft of the latch bar may be provided separately from the rotating shaft of the lever, and the latch bar may be connected to the lever via an engaging portion, and the engaging portion may include the lever and the latch bar. An engagement convex portion formed on one of the lever and an engagement concave portion formed on the other of the lever and the latch bar, and the engagement convex portion is formed on the engagement concave portion. The latch bar may be configured to be engageable, and the latch bar may be rotated by transmitting the rotational force of the lever to the latch lever via the engaging portion.

  In addition, the rotation shaft of the latch bar may be provided between the rotation shaft of the lever and the engagement portion, or the engagement portion is provided between the rotation shaft of the lever and the rotation shaft of the latch bar. It may be done.

  By adopting such a configuration, it is possible to reduce the force required for the rotation of the latch bar, and to obtain various excellent effects such as improving the operational feeling of the lever. it can.

  According to the present invention, it is possible to use a latch lock with less malfunction and good operation feeling without restricting the opening direction of the door.

It is a sectional side view showing a door provided with a latch lock concerning a 1st embodiment of the present invention. It is a principal part enlarged view of FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is sectional drawing which shows typically the inner side part of a door in the latch lock which concerns on the 2nd Embodiment of this invention. In the latch lock which concerns on the 3rd Embodiment of this invention, it is sectional drawing which shows typically the outer side part of a door. In the latch lock which concerns on the 4th Embodiment of this invention, it is sectional drawing which shows typically the inner side part of a door. It is side sectional drawing which shows the door provided with the latch lock which concerns on the 5th and 6th embodiment of this invention. It is a plane sectional view showing the door provided with the latch lock concerning the 5th and 6th embodiments of the present invention. It is side sectional drawing which shows the door provided with the latch lock which concerns on the 7th Embodiment of this invention. It is a plane sectional view showing a door provided with a latch lock concerning a 7th embodiment of the present invention.

  <First Embodiment>

  Hereinafter, based on FIGS. 1-4, the latch lock 1 which concerns on the 1st Embodiment of this invention is demonstrated. FIG. 1 is a side sectional view showing a door provided with a latch lock according to a first embodiment of the present invention. FIG. 2 is an enlarged view of a main part of FIG. 3 is a cross-sectional view taken along the line AA in FIG. 4 is a cross-sectional view taken along line BB in FIG.

  First, of the latch lock 1, members provided on the outdoor side (left side in FIG. 1) of the door 2 will be described. For convenience of explanation, the left side in FIG. 1 is the front side (front side) of the member provided outside the door 2 and the right side in FIG. 1 is the rear side of the member provided outside the door 2 ( Back side).

  As shown in FIG. 1, on the outdoor side of the door 2, an outdoor handle 4 fixed to the outer wall surface 3 of the door 2, and an outdoor back plate 5 disposed on the rear side of the upper end of the outdoor handle 4 The outdoor lever bracket 6 disposed on the front side of the outdoor back plate 5, the outdoor lever 7 supported on the upper part of the outdoor handle 4, and the outdoor latch bar 8 fixed on the upper part of the outdoor lever 7 , Is provided. Hereinafter, these members will be described in order.

  The outdoor handle 4 includes a fixed portion 10 provided at both upper and lower ends thereof, and a connecting portion 11 that connects the fixed portions 10 and extends in the vertical direction, and has a substantially U-shaped cross section. . A mounting bar 12 protrudes rearward from the lower portion of the lower fixing portion 10. The mounting bar 12 passes through the door 2.

  As best shown in FIG. 2, a lever insertion portion 13 is provided in a portion extending from the upper end of the upper fixing portion 10 to the center in the vertical direction of the connecting portion 11. The lever insertion part 13 has a long shape in the vertical direction. An opening 14 is formed on the rear side of the lever insertion portion 13.

  A pair of upper and lower mounting seats 15 are provided on the left and right sides of the upper portion of the lever insertion portion 13. A first seat surface 16 is formed on the upper portion of the upper mounting seat 15 and on the lower portion of the lower mounting seat 15, and a second seat surface is formed on the lower portion of the upper mounting seat 15 and the upper portion of the lower mounting seat 15. A seating surface 17 is formed. Each first seat surface 16 is arranged behind each second seat surface 17.

  The outdoor back plate 5 is accommodated on the upper rear side of the lever insertion portion 13. The outdoor back plate 5 includes a fixed plate 18 extending in the vertical direction and a bent plate 20 bent forward from the lower end of the fixed plate 18 and has a substantially L-shaped cross section. A mounting column 21 that passes through the door 2 is fixed to the upper and lower portions of the rear surface of the fixing plate 18. The upper and lower portions of the fixing plate 18 are fixed to the first seat surface 16 of the outdoor handle 4 via fixing screws 22. A back plate side insertion hole 23 is provided in the front-rear direction at the center of the fixing plate 18 in the vertical direction.

  As shown in FIG. 3, the outdoor lever bracket 6 is accommodated in the upper part of the lever insertion portion 13 and is disposed on the front side of the outdoor back plate 5. The outdoor lever bracket 6 includes a rear plate 24 and side plates 25 bent forward from the left and right sides of the rear plate 24.

  As shown in FIG. 2, the rear plate 24 is fixed to the second seat surface 17 of the outdoor handle 4 via a fixing screw 26. A bracket side insertion hole 27 is provided in the front-rear direction at the center of the rear plate 24 in the vertical direction. Between each side plate 25, the rotating shaft 28 accommodated in the lever insertion part 13 is constructed (refer FIG. 3).

  As shown in FIG. 2, the outdoor lever 7 has a shape that is long in the vertical direction, and is inserted into the lever insertion portion 13 of the outdoor handle 4. A lever side mounting portion 30 is provided on the upper portion of the outdoor lever 7.

  As shown in FIG. 3, a lever side shaft hole 33 is provided in the upper part of the lever side mounting portion 30, and the rotation shaft 28 of the outdoor handle 4 is inserted into the lever side shaft hole 33. As a result, as shown in FIG. 2, the outdoor lever 7 is supported by the outdoor handle 4 in a state where the outdoor lever 7 can rotate in the front-rear direction around the rotation shaft 28. An operation unit 34 is provided at the lower rear side of the outdoor lever 7. The operation unit 34 is disposed so as to protrude to the rear side of the outdoor handle 4 through the opening 14 in a state where the outdoor lever 7 is rotated rearward (see a solid line in FIG. 2).

  As shown in FIG. 2, the outdoor latch bar 8 includes a vertically long latch bar side mounting portion 35 and a horizontally long protrusion 36 extending rearward from the upper portion of the latch bar side mounting portion 35. I have.

  The latch bar side attaching portion 35 is attached to the lever side attaching portion 30 of the outdoor side lever 7, whereby the outdoor side latch bar 8 is fixed to the outdoor side lever 7. As shown in FIG. 3, a latch bar side shaft hole 41 is provided in the upper portion of the latch bar side mounting portion 35, and the rotation shaft 28 of the outdoor handle 4 is inserted into the latch bar side shaft hole 41. Accordingly, the outdoor latch bar 8 is rotatably supported by the outdoor handle 4 together with the outdoor lever 7.

  An accommodation space 42 is formed between the latch bar side attachment portion 35 and the lever side attachment portion 30, and a torsion coil spring 43 is accommodated in the accommodation space 42. The torsion coil spring 43 is wound around the outer periphery of the rotary shaft 28 and urges the outdoor lever 7 to the rear side. A spacer 39 is interposed between the latch bar side mounting portion 35 and the side plate 25 of the outdoor lever bracket 6.

  As shown in FIG. 2, the protrusion 36 is inserted into the back plate side insertion hole 23 provided in the outdoor back plate 5 and the bracket side insertion hole 27 provided in the outdoor lever bracket 6 so as to be inside the door 2. Has been inserted.

  Next, the member provided in the indoor side (right side in FIG. 1) of the door 2 among the latch lock 1 is demonstrated. For convenience of explanation, the right side in FIG. 1 is the front side (front side) of the member provided on the indoor side of the door 2, and the left side in FIG. 1 is the rear side of the member provided on the indoor side of the door 2 ( Back side).

  As shown in FIG. 1, on the indoor side of the door 2, an indoor handle 44 fixed to the inner wall surface 49 of the door 2, and an indoor back plate 45 disposed on the rear side of the upper end of the indoor handle 44 An indoor lever bracket 46 disposed on the front side of the indoor back plate 45, an indoor lever 47 supported on the upper part of the indoor handle 44, and an indoor latch bar 48 fixed to the upper part of the indoor lever 47, , Is provided. The configurations of the indoor lever bracket 46, the indoor lever 47, and the indoor latch bar 48 are the same as the configurations of the outdoor lever bracket 6, the outdoor lever 7, and the outdoor latch bar 8, respectively, and thus description thereof is omitted.

  The indoor handle 44 includes a fixed portion 50 provided at both upper and lower ends thereof, and a connecting portion 51 that connects the fixed portions 50 and extends in the vertical direction, and has a substantially U-shaped cross section. . A lower portion of the lower fixing portion 50 is fixed to an end portion on the indoor side of the mounting bar 12 via a fixing screw 52.

  As best shown in FIG. 2, a lever insertion portion 53 is provided in a portion extending from the upper fixing portion 50 to the center of the connecting portion 51 in the vertical direction. The lever insertion portion 53 has a shape that is long in the vertical direction. An opening 54 is formed on the rear side of the lever insertion portion 53.

  A pair of upper and lower mounting seats 55 are provided on the left and right sides of the upper portion of the lever insertion portion 53. A seat surface 56 is formed on the rear surface of each mounting seat 55.

  The indoor back plate 45 is accommodated on the upper rear side of the lever insertion portion 53. The indoor side back plate 45 includes a fixed plate 57 extending in the vertical direction, a bent plate 58 bent forward from the lower end of the fixed plate 57 and extending in the horizontal direction, and forward from the upper and lower portions of the fixed plate 57. A connecting plate 60 to be bent.

  The upper part and the lower part of the rear surface of the fixing plate 57 are fixed to the end portions on the indoor side of the respective mounting columns 21 via fixing screws 61. A back plate side insertion hole 62 is provided in the front-rear direction at the center of the fixed plate 57 in the vertical direction. Each connecting plate 60 is fixed to the fixing portion 50 on the upper side of the indoor handle 44 via a fixing screw 63.

  Next, the members housed inside the door 2 of the latch lock 1 will be described. For convenience of explanation, the left side in FIG. 4 is the front side (front side) of the member housed in the door 2, and the right side in FIG. 4 is the rear side (back side) of the member housed in the door 2. ).

  As shown in FIG. 4, inside the door 2, there are a lock case 65 installed along the doorway 64 of the door 2, a latch bolt 66 arranged at the front end of the lock case 65, and a rear of the latch bolt 66. A pair of upper and lower locking pieces 67, 68 disposed at the upper side and the rear lower side, and a pair of operating pieces 70, 71 disposed at the rear of each locking piece 67, 68 are provided.

  The front end of the lock case 65 is fixed to the lock case mounting plate 72, and the lock case mounting plate 72 is fixed to the door 64 of the door 2 via a fixing screw 69. A latch bolt mounting portion 73 is formed in the front portion of each lock case 65, and a latch bolt insertion hole 74 is provided in the front-rear direction on the front surface of the latch bolt mounting portion 73. Insertion openings 75 are formed in the upper and lower portions of the latch bolt mounting portion 73.

  The latch bolt 66 is mounted on the latch bolt mounting portion 73 of the lock case 65 so as to be able to rotate in the horizontal direction. The latch bolt 66 moves forward and backward with respect to the mouth 64 of the door 2 in accordance with the rotation in the horizontal direction. A front portion of the latch bolt 66 protrudes forward of the door 64 of the door 2 through the latch bolt insertion hole 74 and enters a strike 77 provided on a fixing member 76 such as a door frame. Thereby, the closed state (temporarily tightened state) of the door 2 with respect to the fixing member 76 is maintained.

  A spring receiving portion 78 is provided on the rear surface of the latch bolt 66, and the latch bolt 66 is protruded by the coil spring 80 interposed between the spring receiving portion 78 and the latch bolt mounting portion 73 (this embodiment). Then, it is urged forward). A flange 81 is provided on the outer periphery of the latch bolt 66, and the flange 81 abuts the latch bolt mounting portion 73 around the latch bolt insertion hole 74.

  Each locking piece 67, 68 is accommodated in the lock case 65. The upper locking piece 67 is rotatable around a first fulcrum 82 provided at the center in the front-rear direction. A locking projection 83 is provided on the front end of the upper locking piece 67 downward, and the locking projection 83 locks the flange 81 of the latch bolt 66. A pressed portion 84 protrudes upward from the rear end portion of the upper locking piece 67. The upper locking piece 67 has a connecting arm portion 85 projecting downward, and a lower end of the connecting arm portion 85 is provided with an engagement protrusion 86 having a circular shape in side view.

  The lower locking piece 68 is rotatable around a second fulcrum 87 provided at the center in the front-rear direction. A locking projection 88 is provided at the front end of the lower locking piece 68, and the hook 81 of the latch bolt 66 is locked by the locking projection 88. A pressed portion 90 protrudes downward from the rear end portion of the lower locking piece 68. A connecting arm portion 91 protrudes upward from the lower locking piece 68, and an engaging hole 92 having an oval shape in side view is provided at the upper end of the connecting arm portion 91. The link 93 is formed by engaging the engagement hole 92 with the engagement protrusion 86 of the upper locking piece 67. An urging spring 89 is wound around the second fulcrum 87, and the urging spring 89 urges each locking piece 67, 68 to a position in which the latch bolt 66 is locked (see the solid line in FIG. 4). Has been.

  Each operation piece 70 and 71 is accommodated in the lock case 65 in a state in which it can move up and down. A pressing portion 94 that abuts against the pressed portion 84 of the upper locking piece 67 is provided at the upper end of one working piece 70. An abutting portion 95 that abuts on the latch bars 8, 48 is provided at the lower end of one working piece 70. At the lower end of the other operating piece 71, a pressing portion 96 that comes into contact with the pressed portion 90 of the lower locking piece 68 is provided. A contact portion 97 is provided at the upper end of the other operating piece 71.

  In the configuration as described above, when the door 2 is closed, the outdoor lever 7 is urged rearward by the urging force of the torsion coil spring 43 (see the solid line in FIG. 2). Further, as shown by a solid line in FIG. 4, the latching protrusions 83 and 88 of the latching pieces 67 and 68 latch the flange 81 of the latch bolt 66 by the biasing force of the biasing spring 89, and the door The retraction of the latch bolt 66 from the two end 64 is regulated. The posture of each of the locking pieces 67 and 68 at this time is referred to as a “first posture”.

  From this state, when the outdoor handle 4 is gripped and pulled forward to open the door 2, the operation portion 34 of the outdoor lever 7 is pushed forward in conjunction with this. By this pressing, as shown by a two-dot chain line in FIG. 2, the outdoor lever 7 rotates forward about the rotation shaft 28, and the outdoor latch bar 8 fixed to the outdoor lever 7 rotates, so that the outdoor side The protrusion 36 of the latch bar 8 moves downward.

  When the protruding portion 36 of the outdoor latch bar 8 moves downward as described above, the protruding portion 36 presses the contact portion 95 of one operating piece 70 downward, and as shown by the two-dot chain line in FIG. The operating piece 70 moves downward. Accordingly, the pressing portion 94 of one working piece 70 presses the pressed portion 84 of the upper locking piece 67 downward, and the upper locking piece 67 resists the biasing force of the biasing spring 89. Rotate. By this rotation, the latch bolt 66 is unlocked by the latch protrusion 83 of the upper latch piece 67. As the upper locking piece 67 rotates, the lower locking piece 68 connected to the upper locking piece 67 via the link 93 also rotates against the biasing force of the biasing spring 89. Then, the latch bolt 66 is unlocked by the locking projection 88 of the lower locking piece 68. As a result, the latch bolt 66 can be retracted (rotated rearward in the present embodiment) from the mouth 64 of the door 2. The posture of each of the locking pieces 67 and 68 at this time is referred to as a “second posture”.

  In addition, since the effect | action at the time of pulling the indoor side handle | steering-wheel 44 is the same as the effect | action at the time of pulling the outdoor side handle | steering-wheel 4, description is abbreviate | omitted. The door 2 can also be opened by pressing the outdoor handle 4 or the indoor handle 44.

  In this embodiment, since the latch bolt 66 is provided so as to be able to advance and retreat with respect to the wood 64 of the door 2, the strike 77 for engaging the latch bolt 66 is not a member facing the wall surfaces 3 and 49 of the door 2. The door 2 can be provided on the door frame 76 that faces the wood 64 of the door 2. Therefore, there is no possibility that the opening direction of the door 2 is restricted by the door frame 76, and the latch lock 1 can be used as a push-pull lock.

In addition, the number of movable members may be reduced as compared with a case where the outdoor handle 4 is fixed to the outer wall surface 3 of the door 2 and the outdoor handle 4 is rotated together with the outdoor lever 7. it can. Therefore, the failure frequency of the latch lock 1 can be reduced. Further, since the outdoor latch bar 8 is rotated in accordance with the rotation of the outdoor lever 7 and there is no need to rotate the outdoor handle 4, the force required for the rotation of the outdoor latch bar 8 can be reduced. It becomes possible to improve the operational feeling. Further, since the operation portion 34 of the outdoor lever 7 is protruded to the rear side of the outdoor handle 4, the outdoor lever 7 is interlocked with the operation of pulling the outdoor handle 4 forward to open the door 2. Can be rotated. Further, since the outdoor latch bar 8 is fixed to the outdoor lever 7, the configuration of the latch lock 1 is simplified as compared with the case where the outdoor latch bar 8 and the outdoor lever 7 are connected via another member. It becomes possible. In addition, these effects are the same also about the member on the indoor side.
<Second Embodiment>

  Next, the latch lock 101 according to the second embodiment will be described with reference to FIG. FIG. 5: is sectional drawing which shows typically the inner side part of a door in the latch lock which concerns on the 2nd Embodiment of this invention. Note that illustration and description of members having the same configuration as in the first embodiment are omitted as appropriate.

  As shown in FIG. 5, an indoor handle 104 is fixed to the inner wall surface 103 of the door 102. The indoor handle 104 is provided with a lever insertion portion 106 having an opening 105 on the front side. An indoor lever 107 is inserted into 106. The indoor lever 107 is provided so as to be rotatable in the front-rear direction around a rotation shaft 108 provided in the lever insertion portion 106. An operation unit 109 is provided on the lower front side of the indoor lever 107. The operation unit 109 is disposed so as to protrude to the front side of the indoor handle 104 through the opening 105 when the indoor lever 107 rotates to the front side. The indoor lever 107 is biased forward by biasing means (not shown).

  An indoor latch bar 110 is fixed to the upper end of the indoor lever 107. A protrusion 111 is provided on the indoor latch bar 110 so as to protrude rearward.

  In the configuration as described above, the operation when the indoor handle 104 is gripped and pushed rearward will be described below. In addition, since the structure of the member accommodated in the door 102 is the same as that of 1st Embodiment, it demonstrates, referring FIG.

  When the indoor handle 104 is gripped and pressed rearward, the operation unit 109 of the indoor lever 107 is pressed rearward in conjunction with this. By this pressing, as shown by a two-dot chain line in FIG. 5, the indoor lever 107 rotates rearward about the rotation shaft 108, and the indoor latch bar 110 fixed to the indoor lever 107 also rotates. The protrusion 111 of the inner latch bar 110 moves upward.

  When the protrusion 111 of the indoor latch bar 110 moves upward as described above (see FIG. 4 below), the contact portion 97 of the other operating piece 71 is pressed upward, and the other operating piece 71 moves upward. . Along with this, the pressing portion 96 of the other operating piece 71 presses the pressed portion 90 of the lower locking piece 68 upward, and the lower locking piece resists the biasing force of the biasing spring 89. 68 rotates. By this rotation, the latch bolt 66 is unlocked by the locking projection 88 of the lower locking piece 68. As the lower locking piece 68 rotates, the upper locking piece 67 connected to the lower locking piece 68 via the link 93 also rotates against the biasing force of the biasing spring 89. Then, the latch bolt 66 is unlocked by the locking projection 83 of the upper locking piece 67.

  In the present embodiment, since the operation portion 109 of the indoor lever 107 is projected to the front side of the indoor handle 104, the indoor handle 104 is pushed rearward to open the door 102, The inner lever 107 can be rotated.

In addition, since the indoor latch bar 110 is fixed to the indoor lever 107, the configuration of the latch lock 101 is simplified as compared with the case where the indoor latch bar 110 and the indoor lever 107 are connected via a separate member. It becomes possible.
<Third Embodiment>

  Next, a latch lock 121 according to a third embodiment will be described with reference to FIG. FIG. 6: is sectional drawing which shows typically the outer part of a door in the latch lock which concerns on the 3rd Embodiment of this invention. Note that illustration and description of members having the same configuration as in the first embodiment are omitted as appropriate.

  As shown in FIG. 6, an outdoor handle 124 is fixed to the outer wall surface 123 of the door 122. The outdoor handle 124 is provided with a lever insertion portion 126 having an opening 125 on the rear side. An outdoor lever 127 is inserted in the center of the portion 126 in the vertical direction. The outdoor lever 127 is provided so as to be rotatable in the front-rear direction around a rotation shaft 128 provided in the lever insertion portion 126. An operation unit 130 is provided on the lower rear side of the outdoor lever 127. The operation unit 130 is disposed so as to protrude to the rear side of the outdoor handle 124 through the opening 125 when the outdoor lever 127 rotates rearward. The outdoor lever 127 is urged rearward by urging means (not shown). A circular first engagement protrusion 131 is provided at the upper end of the outdoor lever 127, and a circular second engagement protrusion 132 is provided at the lower end of the outdoor lever 127.

  An outdoor latch bar 133 is accommodated in the upper portion of the lever insertion portion 126. The outdoor latch bar 133 is rotatable around a rotation shaft 134 provided in the lever insertion portion 126. An oval first engagement groove 135 is provided at the lower end of the outdoor latch bar 133, and when the first engagement protrusion 131 of the outdoor lever 127 is engaged with the first engagement groove 135, A first link 136 is formed. The outdoor latch bar 133 has a protruding portion 137 protruding rearward.

  A link arm 138 is accommodated in the lower portion of the lever insertion portion 126. The link arm 138 is rotatable around a rotation shaft 140 provided at the lower end thereof. An oval second engagement groove 141 is provided at the upper end of the link arm 138, and the second engagement protrusion 132 of the outdoor lever 127 is engaged with the second engagement groove 141, whereby the second link. 142 is formed. An operation projection 143 projects from the lower portion of the link arm 138 toward the rear side.

  In such a configuration, when the operation portion 130 of the outdoor lever 127 is pressed, the outdoor lever 127 rotates forward about the rotation axis 128 as shown by a two-dot chain line in FIG. . Accordingly, the outdoor latch bar 133 connected to the outdoor lever 127 via the first link 136 rotates about the rotation shaft 134 in the direction opposite to the outdoor lever 127. Along with this, the protrusion 137 of the outdoor latch bar 133 moves upward. About the effect | action after that, it is the same as that of 2nd Embodiment.

  In addition, in the structure configured as described above, when the operation projection 143 of the link arm 138 is pressed, the link arm 138 rotates about the rotation shaft 140, and accordingly, the link arm 138 and the second link are rotated. The outdoor lever 127 connected via 142 can be rotated. That is, in this embodiment, it is possible to widen the pressable range by increasing the number of links.

  In the present embodiment, since the operation portion 130 of the outdoor lever 127 protrudes to the rear side of the outdoor handle 124, the outdoor handle 124 is pulled forward and the door 122 is opened in conjunction with the operation. The outer lever 127 can be rotated.

Further, since the outdoor latch bar 133 is connected to the outdoor lever 127 via the first link 136, it is possible to cope with a case where the outdoor latch bar 133 is to be rotated in a direction opposite to the outdoor lever 127. Yes.
<Fourth Embodiment>

  Next, a latch lock 151 according to a fourth embodiment will be described with reference to FIG. FIG. 7: is sectional drawing which shows typically the inner part of a door in the latch lock which concerns on the 4th Embodiment of this invention. Note that illustration and description of members having the same configuration as in the first embodiment are omitted as appropriate.

  As shown in FIG. 7, an indoor handle 154 is fixed to the inner wall surface 153 of the door 152. The indoor handle 154 is provided with a lever insertion portion 156 having an opening 155 on the front side, and an indoor lever 157 is inserted into the lever insertion portion 156. The indoor lever 157 is rotatable in the front-rear direction around a rotation shaft 158 provided in the lever insertion portion 156. An operation unit 160 is provided on the lower front side of the indoor lever 157. The operation unit 160 is disposed so as to protrude to the front side of the indoor handle 154 through the opening 155 when the indoor lever 157 rotates forward. The indoor lever 157 is biased forward by biasing means (not shown). A circular engagement protrusion 161 is provided at the upper end of the indoor lever 157.

  An indoor latch bar 162 is accommodated at the upper end of the lever insertion portion 156. The indoor latch bar 162 is rotatable around a rotation shaft 163 provided in the lever insertion portion 156. An oval engagement groove 164 is provided at the lower end of the indoor latch bar 162. A link 165 is formed by engaging the engagement protrusion 161 of the indoor lever 157 with the engagement groove 164. The indoor latch bar 162 has a protruding portion 166 protruding rearward.

  In such a configuration, when the indoor handle 154 is gripped and pressed rearward, the operation unit 160 of the indoor lever 157 is pressed rearward in conjunction with this. As a result of this pressing, the indoor lever 157 rotates rearward about the rotation shaft 158 as indicated by a two-dot chain line in FIG. Accordingly, the indoor latch bar 162 connected to the indoor lever 157 via the link 165 rotates in the direction opposite to the indoor lever 157 around the rotation shaft 163. Accordingly, the projection 166 of the indoor latch bar 162 moves downward. About the effect | action after that, it is the same as that of 1st Embodiment.

  In the present embodiment, since the operation portion 160 of the indoor lever 157 protrudes to the front side of the indoor handle 154, the indoor handle 154 is pressed rearward to open the door 152 in conjunction with the operation. The inner lever 157 can be rotated.

  Further, since the indoor latch bar 162 is connected to the indoor lever 157 via the link 165, it is possible to cope with the case where it is desired to rotate the indoor latch bar 162 in the direction opposite to the indoor lever 157.

  In the second and fourth embodiments, the indoor side member is described as an example, and in the third embodiment, the outdoor side member is described as an example. However, in other different embodiments, the second and fourth embodiments are described. It is also possible to apply the configuration of the form to a member on the outdoor side, or to apply the configuration of the third embodiment to a member on the indoor side.

  In each of the above embodiments, the latch lock that operates when the latch bar rotates in the same direction or in the opposite direction to the lever has been described. However, in other different embodiments, the latch bar has either the same direction or the opposite direction as the lever. A latch lock that operates only when rotating in one direction may be used.

  <Fifth Embodiment>

  Next, a latch lock 170 according to a fifth embodiment of the present invention will be described with reference to FIGS. 8 and 9. FIG. 8 is a side sectional view showing a door provided with a latch lock according to a fifth embodiment of the present invention, and FIG. 9 is a plan sectional view showing a door provided with a latch lock according to a fifth embodiment of the present invention. is there. In addition, about the member which has the same structure as above-mentioned 1st Embodiment, the same code | symbol is attached | subjected in FIG.8 and FIG.9, and the detailed description is abbreviate | omitted.

  First, the structure of the member provided in the outdoor side (left side in FIG.8 and FIG.9) of the door 2 among the latch locks 170 which concern on this embodiment is demonstrated. In the following description, for the sake of convenience, the left side in FIGS. 8 and 9 is the front side (front side) of the member provided outside the door 2, and the right side in FIGS. 8 and 9 is provided outside the door 2. It is set as the rear side (back side) of the member.

  On the outdoor side of the door 2, an outdoor handle 4 fixed to the outer wall surface 3 of the door 2, an outdoor bracket 171 disposed on the rear side of the upper end of the outdoor handle 4, and an upper portion of the outdoor handle 4 are supported. The outdoor lever 172 and the outdoor latch bar 173 connected to the outdoor lever 172 are provided. Hereinafter, these members will be described in order.

  The outdoor bracket 171 is accommodated on the upper rear side of the lever insertion portion 13 of the indoor handle 4. The outdoor bracket 171 includes a rear plate 174 extending in the vertical direction and a pair of left and right side plates 175 that are bent forward from both sides of the rear plate 174 and are parallel to each other. The upper and lower portions of the rear plate 174 are fixed to the seat surface 16 of the outdoor handle 4 via fixing screws 176. A bracket insertion hole 177 is formed in the center of the rear plate 174 in the vertical direction.

  Between the side plates 175 of the outdoor bracket 171, a rotation shaft 178 of the outdoor latch bar 173 is installed at the center in the vertical direction, and a rotation shaft 179 of the outdoor lever 172 is installed at the top. Further, a substantially rectangular through hole 180 is opened below the rotation shaft 178 of the outdoor latch bar 173 of each side plate 175.

  The outdoor lever 172 has a shape that is long in the vertical direction, and is inserted into the lever insertion portion 13 of the outdoor handle 4. A lever side mounting portion 181 is provided at the upper part of the outdoor lever 172. A lever side shaft hole (not shown) is provided in the upper part of the lever side mounting portion 181, and the rotating shaft 179 of the outdoor lever 172 is inserted into the lever side shaft hole. Thereby, the outdoor lever 172 is supported by the outdoor handle 4 in a state in which the outdoor lever 172 can rotate in the front-rear direction around the rotation shaft 179.

  A laterally long hole 182 is formed at the center in the vertical direction of the lever side attaching portion 181, and one end of the rotating shaft 178 of the outdoor latch bar 173 is loosely fitted in the laterally elongated hole 182. A shaft-shaped portion 183 as an engaging convex portion is inserted into the lower portion of the lever-side mounting portion 181 so as to be parallel to the rotation shafts 178 and 179, and both end portions of the shaft-shaped portion 183 have through holes 180. Are loosely fitted.

  An operation unit 184 is provided on the lower rear side of the outdoor lever 172. The operation unit 184 is disposed so as to protrude to the rear side of the outdoor handle 4 through the opening 14 in a state where the outdoor lever 172 is rotated rearward (see a solid line in FIG. 8).

  The outdoor latch bar 173 includes a vertically long and inverted U-shaped latch bar side mounting portion 185, and a horizontally elongated plate-shaped projecting piece 186 extending rearward from the upper portion of the latch bar side mounting portion 185. It has a bowl shape in plan view.

  A latch bar side shaft hole (not shown) is provided in the upper part of the latch bar side mounting portion 185, and the rotation shaft 178 of the outdoor latch bar 173 is inserted into the latch bar side shaft hole. An insertion hole 188 as an engaging recess that can be engaged with the shaft-like portion 183 is formed in the lower portion of the latch bar side attachment portion 185, and both ends of the shaft-like portion 183 are loosely inserted into the insertion hole 188. . As a result, the shaft-shaped portion 183 and the insertion hole 188 constitute an engaging portion, and the outdoor latch bar 173 can rotate in the front-rear direction around the rotation shaft 178 as the outdoor lever 172 rotates. Supported by the handle 4.

  An accommodation space 189 is formed inside the latch bar side mounting portion 185, and a torsion coil spring 190 is accommodated in the accommodation space 189. The torsion coil spring 190 is wound around the outer periphery of the rotation shaft 178 of the outdoor latch bar 173 and urges the outdoor lever 172 to the rear side.

  The protruding piece 186 is inserted into the door 2 through a bracket insertion hole 177 formed in the rear plate 174 of the outdoor bracket 171.

  Next, the operation of the latch lock 170 configured as described above will be described. In addition, since the member accommodated in the inside of the door 2 among the latch locks 170 has the same configuration as that of the first embodiment described above, refer to FIG. 4 in addition to FIGS. 8 and 9. I will explain.

  In the state in which the door 2 is closed, the outdoor lever 172 is urged rearward by the urging force of the torsion coil spring 190 (see the solid line on the left side of FIG. 8). Further, as shown by a solid line in FIG. 4, the latching protrusions 83 and 88 of the latching pieces 67 and 68 latch the flange 81 of the latch bolt 66 by the biasing force of the biasing spring 89, and the door The retraction of the latch bolt 66 from the two wood ends 64 is restricted, and the locking pieces 67 and 68 are in the first posture.

  From this state, when the outdoor handle 4 is grasped and pulled to the front side to open the door 2, the operation portion 184 of the outdoor lever 172 is pushed forward in conjunction with this. This pressing causes the outdoor lever 172 to rotate forward about the rotation shaft 179 as indicated by the two-dot chain line on the left side of FIG. 8, and the shaft-like portion 183 of the outdoor lever 172 moves the outer peripheral side surface of the insertion hole 188. By pressing the front side, the outdoor latch bar 173 rotates about the rotation shaft 178, and the protruding piece 186 of the outdoor latch bar 173 moves downward.

  When the projection piece 186 of the outdoor latch bar 173 moves downward in this way, the contact portion 95 of the one operation piece 70 is pressed downward by the projection piece 186, and as shown by a two-dot chain line in FIG. The operating piece 70 moves downward. Since the subsequent operations are the same as in the case of the first embodiment described above, detailed description is omitted, but the locking protrusion 83 of the upper locking piece 67 and the locking piece 68 of the lower side are locked. The latch bolt 66 is unlocked by the protrusion 88, the latch bolt 66 can be retracted from the door 64 of the door 2, and the respective locking pieces 67, 68 are in the second posture.

  As described above, according to the present embodiment, the outdoor lever 172 and the outdoor latch bar 173 are connected to each other via the engaging portions (the shaft-shaped portion 183 and the insertion hole 188), thereby rotating the outdoor lever 172. Accordingly, since the configuration in which the outdoor latch bar 173 rotates is adopted, the force required to rotate the outdoor latch bar 173 can be further reduced, and the operational feeling of the outdoor lever 203 can be improved. Become.

  Further, as in the case of the other embodiments described above, since the latch bolt 66 is provided so as to be able to advance and retreat with respect to the mouth 64 of the door 2, the strike 77 for engaging the latch bolt 66 is provided on the wall surface of the door 2. 3 can be provided on the door frame 76 opposed to the throat 64 of the door 2 instead of the member opposed to the door 3. Therefore, there is no possibility that the opening direction of the door 2 is restricted by the door frame 76, and the latch lock 170 can be used as a push-pull lock.

  Furthermore, the number of movable members may be reduced as compared with a case where the outdoor handle 4 is fixed to the outer wall surface 3 of the door 2 and the outdoor handle 4 is rotated together with the outdoor lever 172. it can. Therefore, the failure frequency of the latch lock 170 can be reduced. Further, since the operation portion 184 of the outdoor lever 172 protrudes to the rear side of the outdoor handle 4, the outdoor lever 172 is interlocked with the operation of pulling the outdoor handle 4 forward to open the door 2. Can be rotated.

  <Sixth Embodiment>

  Next, a latch lock 200 according to a sixth embodiment of the present invention will be described with reference to FIGS. 8 and 9. FIG. 8 is a side sectional view showing a door provided with a latch lock according to a sixth embodiment of the present invention, and FIG. 9 is a plan sectional view showing a door provided with a latch lock according to a sixth embodiment of the present invention. is there. In addition, about the member which has the same structure as above-mentioned 1st Embodiment, the same code | symbol is attached | subjected in FIG.8 and FIG.9, and the detailed description is abbreviate | omitted.

  First, the structure of the member provided in the indoor side (right side in FIG.8 and FIG.9) of the door 2 among the latch locks 200 which concern on this embodiment is demonstrated. In the following description, for convenience, the right side in FIGS. 8 and 9 is the front side (front side) of the member provided on the indoor side of the door 2, and the left side in FIGS. 8 and 9 is provided on the indoor side of the door 2. It is set as the rear side (back side) of the obtained member.

  On the indoor side of the door 2, an indoor handle 44 fixed to the inner wall surface 49 of the door 2, an indoor back plate 201 disposed on the rear side of the upper end of the indoor handle 44, and the front side of the indoor back plate 201 The indoor side bracket 202 disposed on the indoor side handle 44, the indoor side lever 203 supported on the upper part of the indoor side handle 44, and the indoor side latch bar 204 connected to the indoor side lever 203 are provided. Hereinafter, these members will be described in order.

  The indoor back plate 201 includes a fixed plate 205 that extends in the vertical direction, and a pair of bent plates 206 that are bent forward from both sides of the fixed plate 205. The upper and lower sides of the fixing plate 205 are fixed to the end portions on the indoor side of the mounting columns 21 via fixing screws 207, and a back plate side insertion hole 208 is formed in the central portion in the vertical direction of the fixing plate 205. . Further, each bending plate 206 is formed with a fixing piece 209 extending further forward, and each fixing piece 209 is fixed to the indoor handle 44 via a fixing screw 210.

  The indoor bracket 202 is housed on the upper rear side of the lever insertion portion 53 of the indoor handle 44. The indoor bracket 202 includes a rear plate 211 that extends in the vertical direction, and a pair of left and right side plates 212 that are bent forward from both sides of the rear plate 211 and are parallel to each other. The upper portion and the lower portion of the rear plate 211 are fixed to the seat surface 56 of the indoor handle 44 through fixing screws 213. A bracket insertion hole 214 is formed in the center of the rear plate 211 in the vertical direction.

  Between each side plate 212 of the indoor side bracket 202, the rotating shaft 215 of the indoor side lever 203 is installed in the upper part, and the rotating shaft 216 of the indoor side latch bar 204 is installed in the lower part. Each side plate 212 of the indoor bracket 202 has a substantially rectangular through hole 217 at the center in the vertical direction between the rotation shaft 215 of the indoor lever 203 and the rotation shaft 216 of the indoor latch bar 204. .

  The indoor lever 203 has a shape that is long in the vertical direction, and is inserted into the lever insertion portion 53 of the indoor handle 44. A lever side mounting portion 218 is provided at the upper part of the indoor lever 203. A lever side shaft hole (not shown) is provided in the upper part of the lever side mounting portion 218, and the rotation shaft 215 of the indoor side lever 203 is inserted through the lever side shaft hole. Thereby, the indoor lever 203 is supported by the indoor handle 44 in a state in which the indoor lever 203 can rotate in the front-rear direction around the rotation shaft 215.

  A horizontally long escape hole 220 is formed in the lower part of the lever side mounting portion 218, and one end portion of the rotation shaft 216 of the indoor latch bar 204 is loosely fitted in the escape hole 220. A shaft-shaped portion 221 as an engaging convex portion is inserted between the lever-side shaft portion 218 and the escape hole 220 so as to be parallel to the rotation shafts 215 and 216. Both end portions of the shaft-shaped portion 221 are loosely fitted into the through holes 217.

  An operation unit 218 is provided on the lower front side of the indoor lever 203. The operation unit 218 is disposed so as to protrude to the front side of the indoor handle 44 through the opening 54 in a state where the indoor lever 203 is rotated to the front side (see the solid line in FIG. 8).

  The indoor latch bar 204 includes a latch bar side mounting portion 219 that is vertically long and has a U-shape in plan view, and a horizontally elongated projection piece 225 that extends rearward from the upper portion of the latch bar side mounting portion 219. It has a bowl shape in plan view.

  A latch bar side shaft hole (not shown) is provided below the latch bar side mounting portion 218, and the rotating shaft 216 of the indoor latch bar 204 is inserted into the latch bar side shaft hole. An insertion hole 222 as an engaging recess that can be engaged with the shaft-shaped portion 221 is formed above the latch-bar shaft hole of the latch bar-side mounting portion 219, and both end portions of the shaft-shaped portion 221 are inserted into the insertion hole 222. It is loosely inserted. As a result, the shaft-shaped portion 221 and the insertion hole 222 constitute an engaging portion, and the indoor latch bar 204 can rotate in the front-rear direction around the rotation shaft 215 as the indoor lever 203 rotates. Supported by the handle 44.

  An accommodation space 223 is formed inside the latch bar side mounting portion 218, and a torsion coil spring 224 is accommodated in the accommodation space 223. The torsion coil spring 224 is wound around the outer periphery of the rotation shaft 215 of the indoor lever 203 and biases the indoor lever 203 forward.

  The protruding piece 225 is inserted into the door 2 through a bracket insertion hole 214 formed in the rear plate 211 of the indoor bracket 202.

  Next, the operation of the latch lock 200 configured as described above will be described. In addition, since the member accommodated in the inside of the door 2 among the latch locks 200 has the same configuration as that of the first embodiment described above, refer to FIG. 4 in addition to FIGS. 8 and 9. I will explain.

  When the door 2 is closed, the indoor lever 203 is urged forward by the urging force of the torsion coil spring 224 (see the solid line on the right side of FIG. 8). Further, as shown by a solid line in FIG. 4, the latching protrusions 83 and 88 of the latching pieces 67 and 68 latch the flange 81 of the latch bolt 66 by the biasing force of the biasing spring 89, and the door The retraction of the latch bolt 66 from the two wood ends 64 is restricted, and the locking pieces 67 and 68 are in the first posture.

  From this state, when the indoor handle 44 is grasped and pulled rearward in order to open the door 2, the operation portion 218 of the indoor lever 203 is pushed backward in conjunction with this. This pressing causes the indoor lever 203 to rotate rearward about the rotation shaft 215 as indicated by a two-dot chain line on the right side of FIG. Is pushed rearward, the indoor latch bar 204 rotates about the rotation shaft 216, and the protruding piece 225 of the indoor latch bar 204 moves downward.

  When the protruding piece 225 of the indoor latch bar 204 moves downward as described above, the abutting portion 95 of the one operating piece 70 is pressed downward by the protruding piece 225, and as shown by a two-dot chain line in FIG. The operating piece 70 moves downward. Since the subsequent operations are the same as in the case of the first embodiment described above, detailed description is omitted, but the locking protrusion 83 of the upper locking piece 67 and the locking piece 68 of the lower side are locked. The latch bolt 66 is unlocked by the protrusion 88, the latch bolt 66 can be retracted from the door 64 of the door 2, and the respective locking pieces 67, 68 are in the second posture.

  As described above, according to the present embodiment, the indoor lever 203 and the indoor latch bar 204 are connected to each other via the engagement portions (the shaft-shaped portion 221 and the insertion hole 222), thereby rotating the indoor lever 203. Accordingly, since the configuration in which the indoor latch bar 204 rotates is adopted, the force required to rotate the indoor latch bar 204 can be further reduced, and the operational feeling of the indoor lever 203 can be improved. Become.

  Further, as in the case of the other embodiments described above, since the latch bolt 66 is provided so as to be able to advance and retreat with respect to the mouth 64 of the door 2, the strike 77 for engaging the latch bolt 66 is provided on the wall surface of the door 2. It can be provided not on the member facing 49 but on the door frame 76 facing the wood 64 of the door 2. Therefore, there is no possibility that the opening direction of the door 2 is restricted by the door frame 76, and the latch lock 200 can be used as a push-pull lock.

  Furthermore, the number of movable members may be reduced compared to the case where the indoor handle 44 is fixed to the inner wall surface 49 of the door 2 and the indoor handle 44 is rotated together with the indoor lever 203. it can. Therefore, the failure frequency of the latch lock 200 can be reduced.

  <Seventh Embodiment>

  Next, a latch lock 230 according to a seventh embodiment of the present invention will be described with reference to FIGS. 10 and 11. FIG. 10 is a side sectional view showing a door provided with a latch lock according to the seventh embodiment of the present invention, and FIG. 11 is a plan sectional view showing a door provided with the latch lock according to the seventh embodiment of the present invention. is there. In addition, about the member which has the same structure as above-mentioned 1st Embodiment, the same code | symbol is attached | subjected in FIG.10 and FIG.11, and the detailed description is abbreviate | omitted. 10 and 11, the members provided on the outdoor side of the door 2 (the left side in FIGS. 10 and 11) have the same configuration as the latch lock 170 according to the fifth embodiment of the present invention described above. Therefore, the reference numerals are omitted and the description thereof is omitted.

  First, the structure of the member provided in the indoor side (right side in FIG.10 and FIG.11) of the door 2 among the latch locks 230 which concern on this embodiment is demonstrated. In the following description, for convenience, the right side in FIGS. 10 and 11 is the front side (front side) of the member provided on the indoor side of the door 2, and the left side in FIGS. 10 and 11 is provided on the indoor side of the door 2. It is set as the rear side (back side) of the obtained member.

  On the indoor side of the door 2, an indoor handle 44 fixed to the inner wall surface 49 of the door 2, an indoor back plate 231 disposed on the rear side of the upper end of the indoor handle 44, and the front side of the indoor back plate 231 The indoor side bracket 232 disposed in the indoor side handle 44, the indoor side lever 233 supported at the center in the vertical direction of the indoor side handle 44, and the indoor side latch bar 234 connected to the indoor side lever 233 are provided. Hereinafter, these members will be described in order.

  The indoor back plate 231 includes a fixed plate 235 extending in the vertical direction, and a pair of bent plates 236 that are bent forward from both sides of the fixed plate 235, respectively. The upper and lower sides of the fixing plate 235 are fixed to the end portions on the indoor side of the respective mounting columns 21 via fixing screws 237, and a back plate side insertion hole 238 is formed in the central portion of the fixing plate 235 in the vertical direction. . Each bending plate 236 is formed with a fixing piece 239 extending further forward, and each fixing piece 239 is fixed to the indoor handle 44 via a fixing screw 240.

  The indoor bracket 232 is housed on the upper rear side of the lever insertion portion 53 of the indoor handle 44. The indoor bracket 232 includes a front plate 241 extending in the vertical direction and a pair of left and right side plates 242 that are bent backward from both sides of the front plate 241 and are parallel to each other. The upper part and the lower part of the front plate 241 are fixed to the seat surface 244 of the indoor handle 44 via fixing screws 243. A bracket insertion hole 245 through which the upper portion 248 of the indoor lever 233 can be inserted is formed in the upper portion of the front plate 241, and a receiving portion 256 protrudes forward in the vertical center of the front plate 241. Yes.

  A rotation shaft 246 of the indoor latch bar 234 is installed under each side plate 242 of the indoor bracket 232. In addition, a substantially rectangular through hole 247 is opened at the top of each side plate 242 of the indoor bracket 232.

  The indoor lever 233 has a shape that is long in the vertical direction, and is inserted into the lever insertion portion 53 of the indoor handle 44. The lower end of the indoor lever 233 is supported by the central portion of the indoor handle 44 so as to be able to rotate in the front-rear direction about the rotation shaft 249.

  A shaft portion 250 as an engaging convex portion is inserted into the upper portion 248 of the indoor lever 233 so as to be parallel to the rotation shafts 246 and 249, and both end portions of the shaft portion 250 are through holes 247. Are loosely fitted. A stopper portion 257 is provided below the upper portion 248 of the indoor lever 233 so as to be able to contact the receiving portion 256 of the indoor bracket 232 toward the rear.

  An operation unit 251 is provided on the upper front side of the indoor lever 233. The operation unit 251 is disposed so as to protrude to the front side of the indoor handle 44 in a state where the upper portion 248 of the indoor lever 233 is rotated forward (see the solid line in FIG. 8).

  The indoor side latch bar 234 includes a vertically long latch bar side mounting portion 252, a horizontally long plate-shaped projecting piece 253 extending rearward from the upper portion of the latch bar side mounting portion 252, and upward from the front portion of the projecting piece 253. And a latch bar protrusion 254 that extends.

  The latch bar protrusion 254 is provided with an insertion hole 255 as an engaging recess that can be engaged with the shaft-like portion 250, and both ends of the shaft-like portion 250 are loosely inserted into the insertion hole 255. As a result, the shaft-shaped portion 250 and the insertion hole 255 constitute an engaging portion, and the indoor latch bar 234 can rotate in the front-rear direction around the rotation shaft 246 as the indoor lever 233 rotates. Supported by the handle 44.

  An accommodation space 258 is formed inside the latch bar side mounting portion 252, and a torsion coil spring 259 is accommodated in the accommodation space 258. The torsion coil spring 259 is wound around the outer periphery of the rotation shaft 246 of the indoor latch bar 234 and biases the indoor lever 233 forward.

  The protruding piece 253 is inserted into the door 2 through the back plate side insertion hole 238 formed in the fixing plate 235 of the indoor side back plate 231.

  Next, the operation of the latch lock 230 configured as described above will be described. In addition, since the member accommodated in the inside of the door 2 among the latch locks 230 has the same configuration as that of the first embodiment described above, refer to FIG. 4 in addition to FIGS. 10 and 11. I will explain.

  When the door 2 is closed, the indoor lever 233 is urged forward by the urging force of the torsion coil spring 259 (see the solid line on the right side of FIG. 10). Further, as shown by a solid line in FIG. 4, the latching protrusions 83 and 88 of the latching pieces 67 and 68 latch the flange 81 of the latch bolt 66 by the biasing force of the biasing spring 89, and the door The retraction of the latch bolt 66 from the two wood ends 64 is restricted, and the locking pieces 67 and 68 are in the first posture.

  From this state, when the indoor handle 44 is gripped to open the door 2 and the operation portion 251 of the indoor lever 233 is pressed backward, the indoor lever 233 is indicated on the right side of FIG. As the shaft rotates rearward about the rotation shaft 249, the shaft-like portion 250 of the indoor lever 233 presses the outer peripheral side surface of the insertion hole 255 rearward. As a result, the indoor latch bar 234 rotates about the rotation shaft 246, and the protruding piece 253 of the indoor latch bar 234 moves downward.

  When the projection piece 253 of the indoor latch bar 234 moves downward as described above, the contact portion 95 of one of the operating pieces 70 is pressed downward by the projection piece 253, and as shown by a two-dot chain line in FIG. The operating piece 70 moves downward. Since the subsequent operations are the same as in the case of the first embodiment described above, detailed description is omitted, but the locking protrusion 83 of the upper locking piece 67 and the locking piece 68 of the lower side are locked. The latch bolt 66 is unlocked by the protrusion 88, the latch bolt 66 can be retracted from the door 64 of the door 2, and the respective locking pieces 67, 68 are in the second posture.

  As described above, according to the present embodiment, the indoor lever 233 and the indoor latch bar 234 are connected to each other via the engaging portion (the shaft-like portion 250 and the insertion hole 255), thereby rotating the indoor lever 233. Accordingly, since the configuration in which the indoor latch bar 234 rotates is adopted, the force required to rotate the indoor latch bar 234 can be further reduced, and the operational feeling of the indoor lever 233 can be improved. Become.

  Further, as in the case of the other embodiments described above, since the latch bolt 66 is provided so as to be able to advance and retreat with respect to the mouth 64 of the door 2, the strike 77 for engaging the latch bolt 66 is provided on the wall surface of the door 2. It can be provided not on the member facing 49 but on the door frame 76 facing the wood 64 of the door 2. Therefore, there is no possibility that the opening direction of the door 2 is restricted by the door frame 76, and the latch lock 230 can be used as a push-pull lock.

  Furthermore, the number of movable members may be reduced as compared with the case where the indoor handle 44 is fixed to the inner wall surface 49 of the door 2 and the indoor handle 44 is rotated together with the indoor lever 233. it can. Therefore, the failure frequency of the latch lock 230 can be reduced.

  In each of the above embodiments, only the configuration in which the closed state (temporarily tightened state) of the door is held by the latch lock has been described. However, in another different embodiment, a locking / unlocking mechanism including a cylinder lock or the like in addition to the latch lock. May be provided on the door.

  In each of the above embodiments, the case where the latch bolt is mounted on the latch bolt mounting portion of the lock case so as to be horizontally rotatable has been described. However, in other different embodiments, the latch bolt is mounted on the latch bolt mounting portion of the lock case. It may be mounted so that it can slide in the direction. In this case, the latch bolt projects from the door's mouth as the latch bolt advances, and the latch bolt retracts from the door's mouth as the latch bolt moves backward.

DESCRIPTION OF SYMBOLS 1 Latch lock 2 Door 3 Outer wall surface 4 Outdoor handle 7 Outdoor lever 8 Outdoor latch bar 13 Lever insertion part 14 Opening part 28 Rotating shaft 43 Torsion coil spring (biasing means)
44 Indoor side handle 47 Indoor side lever 48 Indoor side latch bar 49 Inner wall surface 53 Lever insertion portion 54 Opening portion 64 Wood end 66 Latch bolt 67 Upper locking piece 68 Lower locking piece 101 Latch lock 102 Door 103 Inner wall surface 104 Chamber Inner handle 105 Opening portion 106 Lever insertion portion 108 Rotating shaft 112 Torsion coil spring (biasing means)
121 latch lock 122 door 123 outer wall surface 124 outdoor handle 125 opening 126 lever insertion portion 128 rotating shaft 136 first link 144 torsion coil spring (biasing means)
151 Latch Lock 152 Door 153 Inner Wall Surface 154 Indoor Handle 155 Opening 156 Lever Insertion 158 Rotating Shaft 165 Link 167 Torsion Coil Spring (Biasing Unit)
170 Latch Lock 172 Lever 173 Latch Bar 178 Latch Bar Rotating Shaft 179 Lever Rotating Shaft 183 Shaft-shaped part (engagement convex part)
188 Insertion hole (engagement recess)
200 Latch Lock 203 Lever 204 Latch Bar 215 Lever Rotating Shaft 216 Latch Bar Rotating Shaft 221 Shaft-Shaped Part (engaging convex)
222 Insertion hole (engagement recess)
230 Latch Lock 233 Lever 234 Latch Bar 246 Latch Bar Rotating Shaft 249 Lever Rotating Shaft 250 Shaft-Shaped Part (engaging convex)
255 Insertion hole (engagement recess)

Claims (10)

A pair of handles each fixed to the interior and exterior of the door wall;
A lever rotatably supported by each handle;
A latch bar that rotates as the lever rotates;
A latch bolt provided so as to be capable of advancing and retreating with respect to the mouth of the door;
A first posture that locks the latch bolt to restrict the retracting of the latch bolt from the butt, and a first posture that releases the latch bolt from the butt by releasing the locking to the latch bolt. And a latching piece whose posture is switched between the two postures according to the rotation of the latch bar. At least one of the handles includes a lever insertion portion having an opening on the rear side,
The lever is inserted into the lever insertion portion, is provided to be rotatable in the front-rear direction around the rotation axis, and protrudes at least partially to the rear side of the handle through the opening when rotated to the rear side. The latch lock according to claim 1, wherein the latch lock is biased by the biasing means. At least one of the handles includes a lever insertion portion having an opening on the front side,
The lever is inserted into the lever insertion portion, is provided to be rotatable in the front-rear direction around the rotation axis, and protrudes at least partially to the front side of the handle via the opening when rotated to the front side. The latch lock according to claim 1, wherein the latch lock is biased by a biasing means.   The latch lock according to any one of claims 1 to 3, wherein the latch bar is fixed to the lever and rotates in the same direction as the lever.   The latch lock according to any one of claims 1 to 3, wherein the latch bar is connected to the lever through a link and rotates in a direction opposite to the lever.   The latch lock according to any one of claims 1 to 5, wherein a rotation axis of the latch bar is the same as a rotation axis of the lever.   The rotating shaft of the latch bar is provided separately from the rotating shaft of the lever, and the latch bar is connected to the lever via an engaging portion. Latch lock as described. The engaging portion includes an engaging convex portion formed on one of the lever and the latch bar, and an engaging concave portion formed on the other of the lever and the latch bar, The engaging convex portion is formed to be engageable with the engaging concave portion,
The latch lock according to claim 7, wherein the latch bar is configured to rotate when a rotational force of the lever is transmitted to the latch lever through the engaging portion.   The latch lock according to claim 8, wherein a rotation shaft of the latch bar is provided between a rotation shaft of the lever and the engaging portion.   The latch lock according to claim 8, wherein the engaging portion is provided between a rotation shaft of the lever and a rotation shaft of the latch bar.

Images