JP5204957B2 - Sliding door lock - Google Patents

Description

  The present invention relates to a sliding door lock, and particularly to a sliding door lock provided with a hook, a power transmission mechanism, and a trigger member.

  In Patent Document 1 and Patent Document 2, when the tip of the trigger (horizontal protruding rod) hits the strike of the receiving metal fitting when the sliding door is closed, the tip of the sickle piece is inserted into the strike through the power conversion mechanism. The matter of turning forward toward is described.

  Further, in Patent Document 3 and Patent Document 4, on the premise of the structure of Patent Document 2, when the tip of the sickle piece enters the engagement hole of the strike and enters a so-called temporary locking state, For example, the operating means is operated to move the slide engagement plate downward by a predetermined amount to bring the sickle piece into the locked state.

  Therefore, at least, when the sliding door is closed, when the tip of the trigger (horizontal protruding rod) hits the strike of the bracket, the tip of the sickle piece rotates toward the strike hole through the power conversion mechanism. “Matter to do” is a publicly known matter.

  By the way, “Kama, which is pivotally supported by the lock box, interlocked with this Kama, and a power transmission mechanism that is operated by the operating force of the operating member or the driving force of the driving motor. With regard to the sliding door lock comprising a trigger member that moves backward against the spring force of the urging spring, and the trigger member rotates in the direction in which the hook engages with the receiving bracket due to the backward movement of the trigger member. Although various technological developments continue, the problem with this technology is that an extra load or frictional force is applied to the gear transmission mechanism inside the lock when the hook does not normally engage with the strike.

Therefore, when the hook does not normally engage with the strike, the trigger member (including the trigger cooperating piece) is quickly (preferably instantly) regardless of the configuration of the trigger member. It is expected that the rack member that receives the power on the mechanism side does not interfere with the movement of the rack member so that an unnecessary load or frictional force is not applied to the gear transmission mechanism inside the lock. On the other hand, when “no obstacle” exists when the door is closed, it is desired that the hook protrudes as it is and engages with the strike normally.
Japanese Utility Model Publication No.57-110260 JP-A-8-86132 JP 2002-21391 A JP 2002-89106 A

  The first object of the present invention is that the trigger member is configured so as not to obstruct the movement of the rack member that receives power on the power conversion mechanism side, for example, when the hook does not normally engage with the strike. This is to prevent excessive load and frictional force from being applied to the gear transmission mechanism. The second purpose is that when “no obstacle” exists when the door is closed, the hook protrudes as it is and normally engages with the strike.

The lock for the sliding door of the present invention includes a hook pivotally supported by a lock box, a power transmission mechanism that operates in conjunction with an operating force of an operating member or a driving force of a driving motor, and a front end surface of the door frame when closed. A sliding door lock that has a trigger member that moves backward against the spring force of the biasing spring for trigger when it hits the body, and that rotates in the direction in which the hook engages with the receiving bracket due to the backward movement of this trigger member. The trigger member 30 includes a trigger main body 31 located in the lock box, a clutch piece 32 that is slidably fitted to the tip of the trigger main body 31, and the clutch piece. The front end portion is supported by the inner surface of the clutch piece, and the rear end portion is composed of a clutch spring 49 supported by the trigger main body 31. When the sliding door is closed, the normal protrusion of the hook is disturbed. do it When a required pressure is applied to the clutch piece 32, the clutch piece 32 moves backward and the rear end thereof presses the movable stopper 34 supported by the pivot 33 provided in the trigger body 31. and, if thereby the movable stopper 34 is rotated in a direction of engagement against trigger co働片44 which is pivotally supported by the pivot 43 provided on the trigger body 31 as a fulcrum the pivot 33, sickle engagement The trigger cooperating piece 44 for stopping is disengaged from the hook 10 by the spring force of the urging spring 50 and rotates in a direction away from the rack member 14 receiving the driving force from the power transmission mechanism. And

(1) When the hook does not normally engage with the strike, the trigger member (including the trigger cooperating piece) is quickly (preferably instantly) regardless of the configuration of the trigger member. The rack member that receives the power on the side can be configured so as not to obstruct the movement of the rack member, and an extra load or frictional force is not applied to the gear transmission mechanism inside the lock.
(2) On the other hand, when “no obstacle” exists when the door is closed, the hook protrudes as it is and normally engages with the strike.
(3) In the case of the embodiment in which the trigger cooperating piece of the trigger member also has a function of engaging and disengaging with the hook, the hook does not pop out carelessly when the door is closed.

  Hereinafter, the best mode for carrying out the present invention shown in FIGS. 1 to 8 will be described.

(1) Main environmental member of the invention FIG. 1 is a schematic explanatory diagram of an initial stage where the tip surface of the trigger member strikes when the obstacle is not present, more precisely when the sliding door is closed. . FIG. 2 is a schematic explanatory diagram of a locked state. First, an environmental member surrounding the main part of the present invention will be described with reference to FIGS. It should be noted that the environmental members are obvious to those skilled in the art, such as matters such as openings, shaft holes, shafts, mounting holes, horizontal guide portions for trigger members, etc. provided in lock boxes, dharmas, transmission gears, etc. I will omit the explanation.

  Z is a lock for the sliding door, 1 is a bracket on the vertical frame side, 2 is a strike of the bracket 1, 3 is a lock box, 4 is a front plate, 5 is a kama opening, and 6 is a trigger member opening. The sliding door lock X shows an example. At least the sliding door lock Z is linked to the hook 10 pivotally supported by the lock box 3, and is operated by the operating force of the operating member or the driving force of the driving motor. Gear transmission mechanism (various design changes are possible) 8, 12, 13 as the power transmission mechanism to be moved, and when the front end surface hits the door frame X side when the door is closed, it moves backward against the spring force of the trigger biasing spring 52 It is sufficient if the trigger member 30 is moved and the trigger member 30 is rotated in the direction in which the hook 10 is engaged with the receiving bracket due to the backward movement of the trigger member 30. Therefore, the trigger cooperating piece 44 of the trigger member 30 described later may be configured integrally (unit-wise) with the trigger member 30 or separately from the trigger member 30 as in the present embodiment. .

  The sliding door lock Z according to the present invention includes a trigger member 30 having a novel clutch function in addition to a known and new sliding door lock provided with a gear transmission mechanism interlocking with such a hook or a hook interlocking with the gear transmission mechanism. doing.

  Next, a description will be given of an upper member housed in the lock box 3. Reference numeral 7 denotes a drive gear (for example, thumb turn dharma) which is rotated by a predetermined amount by an operation member (for example, thumb turn knob, operation handle, etc.). Have an unnumbered gear part.

  Reference numeral 8 denotes a first transmission gear (cam linkage gear). The first transmission gear 8 also has an unnumbered gear portion on the outer periphery. In the first transmission gear 8, an engagement pin 9 of an engagement arm extending from the outer periphery to the radially outward direction is engaged with an engagement elongated hole 11 formed at the rear end portion of the hook 10. A relay gear 12 is interposed between the first transmission gear 8 on the drive gear 7 side and the second transmission gear 13 on the rack member 14 side.

  Next, when the second transmission gear 13 is centered on the fixed shaft 15, the second transmission gear 13 has a first gear portion 13 a having a large diameter that meshes with the intermediate gear 12 on the fan-shaped outer periphery located on the upper side, and is located on the lower side. And a second gear portion (for example, a pinion) 13b having a small diameter. The second gear portion 13 b meshes with the rack member 14. And the said rack member 14 is arrange | positioned freely in the horizontal direction above the main structural member (trigger member 30) of this invention.

  Next, reference numeral 16 denotes a hook spring provided on the spring support pin 17 at the center of the hook. One end of the hook spring 16 is pressed against the stepped portion of the hook, and the other end is pressed against the engaging pin 9 of the engaging arm. ing. The hook spring (spring protrusion spring member) 16 constantly biases the hook 10 in the protruding direction.

  The hook 10 having the hook-shaped tip portion 10a has, for example, a hook engaging piece (engagement surface, stepped portion, engagement groove, etc.) 18 to be described later at an appropriate location on the outer surface of the tip portion 10a. Yes. It is not always necessary to directly attach the kama projection spring member 16 to the kama 10, and the kama 10 may be mounted on another member, for example, the rack member 14, and the kama 10 may be provided by the spring force of the kama projection spring member on the rack member side. May be configured to automatically protrude in the engaging direction.

(2) Action of Stick or Rack Member FIG. 3 is a simple schematic explanatory view showing the moving direction of the hook 10 and the rack member 14 in the locked state, the halfway state and the unlocked state (the main part of the present invention is omitted). Here, the first transmission gear (cam linkage gear) 8, the intermediate gear 12, and the second transmission gear 13 existing between the wheel 10 and the rack member 14 are conceptualized as “power transmission mechanism (gear transmission mechanism)”.

  FIG. 3 (a) shows an unlocked state. In this unlocked state, the hook 10 is retracted into the lock box 3, and a hook cooperating piece pivotally supported at the rear end of the trigger member (this embodiment) In FIG.

  Further, the front end portion 14a of the rack member 14 is located on the trigger cooperating piece 44 side. As an additional note. The front end portion 14 a of the rack member 14 is in contact with the finger-like locking portion (upper engagement end portion) 45 of the trigger cooperating piece 44, or is positioned beside the finger-like pressing portion 45. As a matter of course, the gear transmission mechanisms 8, 12, and 13 are stopped.

  FIG. 3B shows a halfway state. In this halfway state, the hook 10 is released from the trigger cooperating piece 44, and the tip portion 10 a protrudes from the opening of the front 4 of the lock box 3 by the spring force of the hook spring 16. To do. When the hook 10 rotates in the engagement (locking) direction, the gear transmission mechanisms 8, 12 and 13 are operated via the linkage means 11 and 9 (for example, the first transmission gear 8 rotates in the counterclockwise direction). Accordingly, the rack member 14 moves while being guided by the horizontal guide 19 in the direction of the rear wall 3a of the lock box indicated by the arrow A. When the hook 10 rotates in the locking direction (protruding direction) and there is no “no obstacle”, the hook 10 protrudes as it is with respect to the strike 2 as shown in FIG. Engage normally. At this time, the rack member 14 moves to a predetermined position on the right side through the gear transmission mechanisms 8, 12, and 13.

(3) Main part of the present invention The main part of the present invention is that, when the kama 10 rotates in the locking direction, for example, an obstacle 20 such as clothes and accessories is sandwiched between the door vertical frame X and the sliding door Y. It operates when a situation that disturbs the protrusion of the hook 10 occurs, such as when the tip 10a of the hook 10 collides with the strike 2 (when there is some obstacle including the strike).

  The intended purpose of the present invention is to prevent the gear transmission mechanisms 8, 12, and 13 from being subjected to excessive loads and frictional forces because the hook 10 does not normally engage with the strike 2.

  First, in FIGS. 4 to 8, 20 is an obstacle. For convenience of explanation, it is assumed that some obstacle 20 exists in the gap 21 between the strike 2 and the front 4. Actually, the obstacles 20 such as clothes and small items are not floating in the air as shown in FIG. 6, but it is easy to understand when a sliding door is stopped by putting a hand, for example.

  FIG. 1 is the first stage. FIG. 6 shows that when the sliding door Y is closed in the direction of arrow A with respect to the door frame X, the front end surface of the trigger member 30 on the sliding door Y side starts to strike the strike 2 of the door frame X, 44 shows a slightly tilted state (immediately after the first stage). Here, immediately after the first stage, it follows the first stage.

  In this first stage, the fingertip-shaped trigger cooperating piece (come locking piece) 44 is in the ON state. Here, the “ON state” refers to an “OFF state” in which the clutch function of the clutch piece 32 externally fitted to the tip of the trigger member 30 is “off” with respect to the trigger cooperating piece 44. In other words, when the sliding door is closed and there is a situation that disturbs the normal protrusion of the hook 10, when the clutch function does not work, an impact force is applied to the rack 14 from the hook side via the power transmission mechanism. Therefore, if the presence of the trigger cooperating piece 44 hinders the escape movement of the rack 14, a load is applied to the power transmission mechanism.

(4) Trigger member 30
Therefore, the configuration of the trigger member 30 will be described with reference to FIGS. 6 and 7. The trigger member 30 is roughly divided into a trigger main body 31 located in the lock box, a clutch piece 32 that is slidably fitted to the tip end portion of the trigger main body 31, and the clutch piece. A clutch spring 49 is supported on the inner surface of the clutch piece, and a rear end is supported on the trigger body 31. In addition, the cap-shaped clutch piece 32 is slidably fitted to the distal end portion of the trigger body 31 and collides with the front surface of the strike 2 when the hook is engaged (locked). The clutch spring 49 has a function of returning the cap-shaped clutch piece 32 to its original position. Further, the trigger body 31 extends a predetermined amount from the front plate 4 of the lock box 3 toward the rear wall 3a of the lock box 3, and the rear end thereof is located at the center of the lock box 3 or near the center. ing. And the trigger member 30 of a present Example has a clutch function so that it may mention later.

  Although explanation of detailed matters such as a plurality of shaft holes and notches of the trigger main body 31 is omitted, the trigger main body 31 is first provided with a movable stopper 34 supported by a front pivot 33 which is one pivot. I have. Thus, the movable stopper 34 has a bearing portion 34a on the tip end side and a bearing portion 34b on the rear end portion side connected to the bearing portion 34a, and the bearing portion 34b on the rear end portion side has a lock. A guide shaft 35 is provided that is guided by a guide hole 25 formed in the center of the box 3 near the bottom wall 3b. In the guide hole 25, an inclined surface for guiding the guide shaft 35 is formed on the upper right. Further, an opening or a notch is formed in the upper wall 36 of the bearing portion 34b on the rear end side, and a stopper function is imparted directly or indirectly to the opening edge of the upper wall 36.

  Next, the trigger main body 31 is supported by a rear pivot 43 which is the other pivot, and is a trigger cooperating piece which engages and disengages to the rear end side of the movable stopper 34 (in this embodiment, a hook locking piece). ) 44. The thumb-shaped locking portion 45 of the trigger cooperating piece 44 is positioned so as to face the front end surface of the rack member 14 in the unlocked state. In some embodiments, the thumb-shaped locking portion 45 may have a function of pressing the front end surface of the rack member 14.

  With reference to FIG. 6, the movable stopper 34 is positioned below the trigger main body 31, while the trigger cooperating piece 44 protrudes above the trigger main body 31. In other words, the front pivot 33 is located at a protruding portion projecting from the lower side of the trigger body 31, while the rear pivot 43 is located rearward of the trigger body 31 so as to be located obliquely above the front pivot 33. It is provided at the end.

  Thus, the trigger cooperating piece 44 has a thumb-shaped locking portion 45 on the upper side with respect to the rear pivot 43, and on the other hand, a small protrusion that engages and disengages on the rear end side of the movable stopper 34 on the lower side. The engagement claw 46 has a shape. A central portion of the urging spring 50 for the trigger cooperating piece 44 is wound around the bearing 47 of the trigger cooperating piece 44, and the urging spring 50 always moves the trigger cooperating piece 44 in the direction of arrow B. Energized.

  Further, as shown in FIG. 4, in order to provide the trigger member 30 with a clutch function to be described later, one or a plurality of (this embodiment) clutch springs 49 are appropriately provided in the clutch piece 32.

  In addition, a trigger member biasing member 52 that biases the trigger member 30 in the protruding direction is provided in the lock box 3. In this embodiment, the central portion of the urging member 52 is wound around a fixing pin 53 provided in the vicinity of the rear wall 3a and the bottom wall 3b of the lower end portion of the lock box 3, and one end portion thereof is after the notch of the trigger body 31. It is in pressure contact with the end face.

(5) Clutch Function of Trigger Member 30 FIG. 6 is the “first stage”. As described above, the first stage is the moment when the tip surface of the trigger member 30 on the sliding door Y side starts to strike the strike 1 of the door frame X. In the first stage, the trigger cooperating piece 44 is in an ON state. Therefore, since the tip portion 10b of the hook 10 has not yet jumped out of the lock box 3, the obstacle 20 is not still an obstacle. In addition, as described above, the trigger function of the trigger member 30 is “OFF” with respect to the hook locking piece.

  In other words, the front end surface 32a of the clutch piece 32 (the front end surface of the trigger member 30) is not urged against the front surface of the strike 2, so that the clutch spring 49 is in an extended state.

  The fact that the clutch spring 49 is in an extended state means that the rear end surface 32b of the clutch piece 32 is separated from the upper end surface of the bearing portion 34a of the movable stopper 34 in this embodiment. That is, when the clutch is OFF, there is a slight gap between the rear end surface 32 b of the clutch piece 32 and the front end surface of the movable stopper 34.

  Therefore, in this first stage, since the engaging claw 46 of the trigger cooperating piece 44 is locked to the upper wall 36 side of the movable stopper 34, the trigger cooperating piece 44 is still tilted counterclockwise. Absent.

  In FIG. 8, the trigger member 30 is further retracted and a force (for example, twice or three times the normal shock) is applied to the front end surface 32 a of the clutch piece 32, and the clutch spring 49 contracts and the rear of the clutch piece 32. The upper end surface of the movable stopper 34 is momentarily pressed by the end face 32b, whereby the movable stopper 34 rotates in the direction of arrow A (clockwise), and the upper wall 36 of the movable stopper 34 is the engagement claw of the trigger cooperating piece 44. Since it is away from 46, the trigger cooperating piece 44 is tilted in the direction of arrow B (counterclockwise) by the spring force of the biasing spring 50 (second stage). In this second stage, since the hook 10 is released from the trigger cooperating piece 44 of the trigger member 30, the clutch of the clutch piece 32 is in an “ON state” with respect to the trigger cooperating piece (come locking piece) 44. is there. That is, the trigger member 30 unlocks the hook 10 and the hook 10 becomes free.

  By the way, when the clutch piece 32 is in the ON state, the clutch spring 49 returns to the extended state (initial state) even though the sliding door hits the obstacle and stops there. This is because the trigger main body 34 is slightly retracted toward the rear wall 3 a side of the lock box 3.

  However, even when the clutch spring 49 is restored, the clutch remains in the “ON state”. In the second stage, when the trigger cooperating piece 44 tilts in the direction of arrow B (counterclockwise), in this embodiment, it is temporarily supported by the receiving piece 55 in the lock box interior. However, the receiving piece 55 is not a limiting requirement of the invention.

  Therefore, even if the tip portion 10a of the hook 10 hits an obstacle, if the required pressure is applied to the clutch piece 32, the trigger member 30 performs the clutch function, so that the hook 10 becomes free, and as a result, the gear transmission. No excessive load or friction force is applied to the mechanisms 8, 12, and 13.

  In the embodiment of the present invention, the trigger cooperating piece 44 of the trigger member 30 is pivotally supported by the trigger main body 31. For example, the trigger cooperating piece 44 is disposed on the front side of the lock box 6 so as to cross the trigger main body 31. The lower end of the lock box 6 may be pivotally supported, while the upper end may be engaged with the engaged portion 18 of the hook 10. The hook cooperative piece 44 preferably has a function of engaging with and disengaging from the hook 10.

  The present invention is mainly used in the joinery and lock industry.

1 to 8 are explanatory views showing an embodiment of the present invention.
Schematic explanatory drawing which shows the implementation environment (unlocked state). Schematic explanatory drawing (locking state) showing the implementation environment. BRIEF DESCRIPTION OF THE DRAWINGS The simple schematic explanatory drawing which shows the moving direction of the hook and rack member in a locked state, a halfway state, and an unlocked state (the principal part of this invention is abbreviate | omitted). The horizontal schematic explanatory drawing of the principal part. The vertical schematic explanatory drawing of the principal part. The schematic explanatory drawing of the 1st step of the principal part. Explanatory drawing of a trigger member. The schematic explanatory drawing of the 2nd step of the principal part.

X: Vertical frame for door, Y: Sliding door, Z: Lock for sliding door, 1 ... Bracket, 2 ... Strike, 3 ... Lock box, 3a ... Rear wall of lock box, 4 ... Front plate, 5 ... Kama opening, 6 ... Opening for trigger member, 8, 12, 13 ... Constituent member of power transmission mechanism, 9, 11 ... Coupling means, 10 ... Cama, 10a ... Tip portion, 14 ... Rack member, 14a ... Tip portion, 16 ... Cama protrusion Spring member, 18 ... engaged portion of hook, 20 ... obstruction, 21 ... gap, 25 ... guide hole, 30 ... trigger member, 31 ... trigger body, 32 ... clutch piece, 33 ... front pivot, 34 ... movable Stopper, 35 ... guide shaft, 36 ... upper wall of movable stopper, 43 ... rear pivot, 44 ... trigger cooperating piece, 45 ... locking part (finger-shaped pressing part), 46 ... engagement claw, 49 ... clutch spring, 50 ... Biasing spring for trigger cooperating piece, 52 ... Biasing part for trigger member .

Claims (2)

A force that is pivotally supported by the lock box, and a power transmission mechanism that operates in conjunction with the force of the operation member or the drive force of the drive motor, and the urging for the trigger when the end face hits the door frame when closed The trigger member 30 includes a trigger member that moves backward against the spring force of the spring, and the lock for the sliding door rotates in a direction in which the hook engages with the receiving bracket due to the backward movement of the trigger member. Is a trigger main body 31 located in the lock box, a clutch piece 32 slidably fitted to the tip of the trigger main body 31, and the clutch piece, and the tip is the inner surface of the clutch piece. And a clutch spring 49 supported at the rear end portion of the trigger body 31. When the sliding door is closed, a situation in which the normal protrusion of the hook is obstructed occurs. When the pressure is applied, the clutch piece 32 moves backward and the rear end thereof presses the movable stopper 34 pivotally supported on the pivot 33 provided on the trigger main body 31, thereby moving the movable stopper 34. When 34 rotates in a direction of engagement against trigger co働片44 which is pivotally supported by the pivot 43 provided on the trigger body 31 as a fulcrum the pivot 33, the trigger co for sickle locking The working piece 44 unlocks the hook 10 by the spring force of the urging spring 50 and rotates in a direction away from the rack member 14 receiving the driving force from the power transmission mechanism.
2. The trigger main body 31 according to claim 1, wherein the trigger main body 31 is supported by a movable stopper 34 supported by a front pivot 33 as one pivot and a rear pivot 43 as the other pivot, and is a rear end of the movable stopper 34. A lock for a sliding door, characterized in that it includes a trigger cooperating piece 44 that can be engaged and disengaged on the side and also on the hook 10.

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