JP2006169859A - Crescent lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crescent lock having a locking function and easily operated to lock. <P>SOLUTION: A locking arm 5 is hangingly provided at a handle shaft 4, and a fixed collision part 6 is disposed on one side of a tip part in a locking angle position of the locking arm 5, while the tip of a locking slider 7 is disposed on the other side. The locking slider 7 is energized downward while being guided movably between a locking position where the tip holds the tip of the locking arm between itself and the collision part, and an unlocking position outside of the turning locus of the tip of the locking arm, while a control lever 11 is disposed in a swingable manner near the lower end of the locking slider 7 in an overlapping form. A dial 14 formed with a cutout 15 at the outer peripheral part is turnably provided near one end of the control lever 11, and the control lever is energized in a direction to put one end in proximity to the outer periphery of the dial. The other end of the control lever and the lower end of the locking slider are movably engaged. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a crescent lock, and more particularly, to a crescent lock that has a locking function and is easy and easy to lock, and that cannot be locked unless the shoji is completely closed.

  A crescent lock is usually attached to a summing part of a sliding door and another sliding door or a summing part of a sliding door and a fixing member, and is attached to the sliding door or the fixing member, and has a folding back and locking portion at the tip. A locking piece, a pedestal attached to a sliding door or a fixing member, a handle pivotally supported around a horizontal axis with respect to the pedestal, and an arcuate ring portion formed on the outer periphery. And a locking plate.

And the present applicants have proposed a crescent lock having a locking function and easy and easy locking operation by incorporating a dial lock into the crescent lock with Patent Document 1 described later.
Japanese Patent Application No. 2004-320622 Japanese Patent Laid-Open No. 9-155854 JP-A-9-158585

  The crescent tablet proposed by the above-mentioned patent document 1 does not have inconveniences or room for further improvement within the scope of its purpose.

  However, the inner shoji with the crescent lock and the external shoji that is different from the inner shoji can be locked without the closed position. The inconvenience that the lock board clashes with the shoji screen remains.

  Therefore, in addition to the structure of the crescent lock described in Patent Document 1, the present invention prevents the safety mechanism described in Patent Documents 2 and 3 from being locked unless the shoji is completely closed. The present invention proposes a crescent lock incorporating a safety mechanism, and aims to improve the usability and safety of the crescent lock.

  In order to achieve the above object, the invention according to claim 1 is supported by a thin box-shaped pedestal mounted on one side of the sliding door, and rotatably supported coaxially with the handle on the surface side of the pedestal. An arc-shaped ring-shaped bank formed on the outer periphery has a locking plate adapted to engage with a locking piece of a mating rivet that is pulled apart, and is engaged with the inner end of the handle shaft base. A locking arm is provided vertically, a fixed stopper is provided on one side of the locking arm at the locking angle position, and a locking slider tip is provided on the other side. The leading end of the locking arm is movably guided between the locking position where the leading end of the locking arm is sandwiched between the locking portion and the unlocking position outside the rotation trajectory of the locking arm, and in the locking position direction. On the other hand, in a mode that overlaps with the lock slider near the base end, A control lever is provided so as to be able to swing, and a dial having a notch formed in the outer peripheral portion thereof is provided in the vicinity of one end portion of the control lever so that the control lever can be rotated. On the other hand, an engagement protrusion is formed on one of the base end of the locking slider and the other end of the control lever, and an engagement hole that is long in the guide direction of the locking slider is formed on the other. In addition, the biasing force of the control lever is set to be larger than that of the locking slider, and the center of the trigger lever is perpendicular to the shoji at the portion of the locking plate near the locking piece with respect to the handle shaft. The trigger lever is supported so that it can rotate in a plane, and one end of this trigger lever is urged in the direction approaching the locking piece, while the other end of the trigger lever that protrudes outside the locking plate is placed on the surface side of the base. Protruding locking projections, etc. A locking step is formed on the surface of the pedestal to engage with the locking projection in the locus of the other end of the trigger lever in a normal state where no external force is applied, and when the handle rotates in the locking direction, the locking piece When the lever is not in the closed position, the locking protrusion of the trigger lever is stopped against the locking step on the surface of the base so that the handle is not rotated.

  The crescent lock according to the first aspect of the present invention configured as described above turns the dial to engage the notch and one end of the control lever, or releases the engagement to disengage the other end of the control lever. The lock slider can be moved via the lock, and the tip can be selectively set to the lock position and the unlock position, so that the lock can be incorporated into the crescent lock.

  In addition, the notch and the control lever of the dial in a state where the arcuate ring portion of the crescent lock is not engaged with the locking piece of the other side, in other words, the crescent lock as the latching device is not locked. When the dial is set to the locking angle position and the handle is turned in this state to lock the crescent lock, the tip of the locking arm pushes the tip of the locking slider in the locking position. Once placed in the unlocked position, when the tip of the locking arm moves to the locked position, the tip of the locked slider is released and the biasing force returns the tip of the locked slider to the locked position. Locking is possible, that is, so-called automatic locking becomes possible.

  Furthermore, since the locking / unlocking operation can be performed only by turning the dial, a so-called key is not necessary, so that storage / removal of the key is not required, and the locking / unlocking operation is simplified.

  In addition, since the handle cannot be turned completely when the internal and external shoji is not in the closed position, various effects such as prevention of various inconveniences caused when the lock disc is protruded without being engaged with the locking piece can be prevented. Play.

  The control lever is swung by engaging / disengaging the notch of the dial and one end of the control lever, the locking slider is moved to lock and unlock, and the locking slider is engaged so that it can move relative to the other end of the control lever. So, so-called automatic locking becomes possible, and it is possible to detect whether the shoji is completely closed by the trigger lever, so when the lock disc is projected without engaging the locking piece Various inconveniences that occur can be prevented.

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a vertically long and thin pedestal, and a locking plate 2 on the surface side of the pedestal 1 and a handle 3 coaxially and integrally coupled to the locking plate 2 are rotatable. It has been hindered.

  The lock plate 2 is integrally formed with a ring portion having a helical engagement edge, and the ring portion can be engaged with a locking piece of a mating rivet that is pulled apart. It is the same as other crescent tablets.

  A locking arm 5 is suspended from the inner end of the pedestal 1 of the handle shaft 4 (see FIG. 2) integrally coupled to the handle 3. Here, the vertical installation means that a locking arm extending in the radial direction of the handle shaft 4 is integrally coupled to the handle shaft.

  The locking arm 5 shown in FIG. 2 is at the 12 o'clock angular position in terms of the clock face, and this angular position is taken as the locking angular position.

  The stopper 6 fixed in the base 1 so as to sandwich the tip of the locking arm 5 at the locking angle position, and the tip (upper end) of the locking slider 7 on the opposite side of the stopper 6 with respect to the tip of the locking arm 5 ) Are arranged respectively.

  The locking slider 7 has a locking position (position shown in FIG. 2) in which the tip of the locking arm 5 is sandwiched between the tip of the locking slider 7 and the stopper 6 along one side surface of the pedestal 1, and the position of FIG. It is guided so as to be able to move between the position shown in FIG. 3, that is, the unlocked position outside the rotation locus at the tip of the locking arm 5.

  The locking slider 7 is urged downward, that is, in the locking direction, by the elasticity of the slider spring 8 as a compression coil spring.

  In the illustrated embodiment, the handle is turned and unlocked by, for example, 180 degrees, and the locking arm 5 is converted into a clock face and the 6 o'clock angular position is set as the unlocking angular position.

  The arm spring 9 as a tension coil spring elastically mounted between the substantially center inside the pedestal 1 and a part of the locking arm 5 functions as a thought spring, and gives a click feeling to the rotation of the handle. However, the arm spring 9 is not an essential component of the present invention.

  On the other hand, a substantially horizontal control lever 11 is disposed in the vicinity of the base end portion (lower end portion) of the locking slider 7 so as to partially overlap with this, and the control lever 11 has a substantially central portion at the lever. The shaft 12 is supported so as to be swingable.

  Further, the control lever 11 has one end (the left end in FIGS. 2 and 3) of the control lever 11 on the outer periphery of the dial 14 to be described later by the elasticity of the lever spring 13 as a compression coil spring mounted on the other end. It is energized in the approaching direction.

  It is assumed that the elasticity of the lever spring 13 is set to be greater than the elasticity of the slider spring 8.

  On the other hand, a dial 14 in which a notch 15 (see FIG. 2) is formed at one location on the outer peripheral portion is provided in the vicinity of one end of the control lever 11 so as to be rotatable.

  In the illustrated embodiment, the dial 14 is obtained by superimposing, in the thickness direction, an operation ring 14a and a main body plate 14b having a polygonal cut portion and having the notch 15 formed at a selected angular position. For example, a part of the operation ring 14a having a knurl formed on the outer periphery is exposed, for example, below the side surface of the base 1 (see FIG. 4), and is configured so that the dial 14 can be rotated from the outside. Yes.

  Further, as shown in FIG. 4, a code such as an arithmetic numeral is marked on the outer peripheral surface of the operation ring 14 a while maintaining a certain angular interval, and the code selected as the code number is, for example, a side opening of the pedestal. By aligning with the center, the angular interval between the notch 15 and one end of the control lever is set.

  Since the dial 14 is configured as described above, a key difference in the number of codes marked on the operation ring 14a can be obtained. Thus, the crescent lock according to the present invention incorporates a lock as a dial lock. It has a locking function as will be described later.

  In the illustrated embodiment, a click spring 16 that makes line contact with the polygonal step portion of the main body plate 14b is arranged so as to be elastically contacted, and the click spring 16 gives a click feeling to the rotation of the dial 14. Has been granted.

  On the other hand, as shown in FIGS. 2 and 3, an engaging protrusion 17 is provided at the other end of the control lever 11, and this engaging protrusion 17 is a vertically long engagement opening at the lower end of the locking slider 7. The joint hole 18 is slidably engaged.

  As described above, since the elasticity of the lever spring 13 that pushes the other end of the control lever 11 upward is set to be larger than the elasticity of the slider spring 8 that biases the locking slider 7 downward, the locking slider 7 In a normal state where no external force acts on the engagement protrusion 17, the engagement protrusion 17 abuts on the opening edge above the engagement hole 18.

  In the locked state, the crescent lock according to one embodiment of the present invention configured as described above has one end of the control lever 11 at the outer peripheral portion where the notch 15 of the main body plate 14b is not formed, as shown in FIG. Therefore, the other end of the control lever 11 is in a relatively lowered position.

  Therefore, the locking slider 7 follows the other end of the control lever, and is in the locking position shown in FIG. 2, that is, a position where the tip of the locking arm 5 is sandwiched between the locking slider 7 and the stopper 6.

  At this time, as is apparent from FIG. 2, even if the handle 3 (see FIG. 1) is rotated clockwise or counterclockwise, the tip of the locking arm integral with the handle 3 is the tip of the stopper 6 or the locking slider 7. The handle cannot be turned and therefore the crescent lock cannot be unlocked.

  When the operation ring 14a of the dial is turned to unlock the crescent lock and the notch formed at a predetermined angular position is aligned with one end of the control lever 11, one end of the control lever is brought into the notch 15 by the elasticity of the lever spring 13. As shown in FIG. 3, the other end of the control lever pushes up the locking slider 7 and displaces the tip of the locking lever upward outside the rotation locus of the locking arm.

  Therefore, the tip of the locking arm 5 at the locking angle position shown in FIG. 2 can be rotated to the unlocking angle position shown in FIG. 3 without interfering with the tip of the locking slider 7. In other words, the crescent lock is unlocked.

  On the other hand, when the locking slider 7 is in the locked state as shown in FIG. 2 and the locking arm 5 is at the unlocking angle position as shown in FIG. Abutting against an arc-shaped relief edge 17a (see FIG. 2) formed at the tip of the locking slider 7 is pushed up (not shown).

  With the configuration described above, the locking slider 7 can move upward relative to the other end of the control lever 11. Therefore, when the handle is further rotated in the locking direction, the tip of the locking arm 5 reaches the locking angle position shown in FIG. When the locking angle position shown in FIG. 2 is reached, the locking arm 5 and the escape edge 17a are disengaged, and the locking slider 7 returns to the position shown in FIG. To do. That is, automatic locking is performed.

  Next, a safety mechanism that prevents locking unless the shoji is completely closed will be described.

  In FIGS. 5 and 6, reference numeral 2 denotes a lock plate, which is integrally coupled to the upper end of the handle 3 (see FIG. 1), and the handle 3 is rotated counterclockwise in FIG. 1, for example. As described above, the shoji is locked by being engaged with the locking piece 19 (see FIG. 5) mounted on the other party's heel which is to be pulled when moved.

  On the surface of the lock plate 2, on the handle shaft hole 21, a portion close to the locking piece 19, in other words, on the left side of the handle shaft hole, as shown in FIG. It is rotatably supported by a support shaft (not shown) fitted to the support shaft hole 20.

  Since the handle shaft is parallel to the shoji (see FIG. 5), the trigger lever 22 rotates in a plane perpendicular to the shoji.

  In the illustrated embodiment, one end (upper end in FIG. 7) of the trigger lever 22 is bent in a cross-sectional shape in order to facilitate engagement with a locking piece 19 described later.

  Further, the trigger lever 22 has one end bent in the counterclockwise direction in FIG. 7, that is, in the shape of a square, due to the elasticity of the trigger spring as a torsion coil spring wound around the support shaft (not shown). It is biased in the direction approaching the stop piece 19.

  On the other hand, the other end portion of the trigger lever protrudes outward from the contour line of the flat portion of the locking plate 2, and the other end is bent to the surface side of the pedestal, in other words, to the back side of the page in FIG. A stop projection 23 is formed.

  And this latching protrusion 23 is elastically contacted to the latching edge 24 (refer FIG. 8) formed in the plane part of the locking disc 2 with the urging | biasing force of the above-mentioned trigger lever, and the normal state where an external force does not act on a trigger lever Specifies the angular position.

  In addition, the latching protrusion 23 is extended further downward than the latching edge 24 in FIG. 7, and selectively engages with a latching step portion to be described later.

  On the other hand, as shown in FIGS. 9 and 10, the vicinity of the handle shaft on the pedestal surface protrudes, for example, in a fan shape, and a locking step portion 25 is formed at a predetermined angular position around the handle shaft of the protrusion.

  The radial distance from the handle central axis of the locking step 25 is set to be approximately the same as the distance between the center of the handle shaft hole 21 shown in FIG. 7 and the locking protrusion 23 of the trigger lever at the normal angle position. ing.

  In the safety mechanism configured as described above, when the handle is rotated counterclockwise in FIG. 1 and the lock disc 2 is engaged with the locking piece 19 (see FIG. 5), one end of the trigger lever 22 is Prior to the annulus portion of the lock plate 2, it moves to the left in FIG. 5 and engages with the locking piece 19.

  Therefore, when the shoji is not completely closed and the relative position with respect to the trigger lever 22 is not in the position shown in FIG. 5, when the handle is turned in the locking direction, one end of the trigger lever 22 and the abutment portion of the lock disc 2 The tip of the arm does not come into contact with the locking piece 19, so that it is swung.

  Therefore, the trigger lever 22 is pivoted while maintaining the relative angular position with respect to the lock disc 2 as shown in FIG. 5, and for example, when the handle is rotated by 60 degrees, the locking projection 23 becomes the locking step 25 (FIG. 9). And FIG. 10).

  Then, as is apparent from FIG. 7, since the support shaft hole 20 and the handle shaft hole 21 are separated from each other, mechanically speaking, the slider of the slider crank mechanism is stopped by the locking step portion 25. And the handle cannot be rotated any further.

  On the other hand, when the shoji is completely closed, the tip of the locking piece 19 exists in the movement locus of one end of the trigger lever 22 as shown in FIG.

  Therefore, when the handle is turned, as shown in FIG. 8, one end of the trigger lever 22 is pushed by the tip of the locking piece 19, and the trigger lever rotates clockwise. As shown in FIG. The locking projection 23 of the locking plate 2 is separated from the locking edge 24 of the locking plate 2.

  As described above, since the support shaft of the trigger lever 22 is located outside the handle shaft, the distance between the locking projection 23 and the center of the handle shaft hole 21 is larger than before.

  Therefore, when the handle is rotated in this state, the locking projection 23 rotates around the outside of the locking step portion 25 (see FIG. 9), so that there is nothing to obstruct the rotation of the handle, and the crescent lock is locked. Is performed without any problems.

The front view which fractures | ruptures and shows a part of crescent lock by one Example of this invention. The rear view shows the locked state. The rear view shows the unlocked state. The partial side view of the crescent lock by one example of this invention. The top view of the crescent lock by one example of this invention. The side view of the crescent lock by one example of this invention. It is a front view which shows the aspect of engagement with a lock disc and a trigger lever, and shows the normal state in which an external force does not act on a trigger lever. It is a front view which shows the aspect of engagement with a lock disc and a trigger lever, and the action | operation when a shoji is closed is shown. The front view of the base as components. The side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Locking board 3 Handle 4 Handle shaft 5 Locking arm 6 Stopping part 7 Locking slider 8 Slider spring 9 Arm spring 11 Control lever 12 Lever shaft 13 Lever spring 14 Dial 15 Notch 16 Click spring 17 Engaging protrusion 18 Engagement Joint hole 19 Locking piece 20 Spindle hole 22 Trigger lever 23 Locking protrusion 24 Locking edge 25 Locking step

Claims (1)

  A thin box-shaped pedestal mounted on one side of the sliding door and a circular arcuate portion formed on the outer periphery of the pedestal that is rotatably supported coaxially with the handle on the surface side of the pedestal are drawn to each other. A locking arm adapted to be engaged with a locking piece of a mating rivet, and a locking arm is suspended from the inner end of the handle shaft base, and the distal end of the locking arm at the locking angle position A fixed stop on one side of the part and a tip of the locking slider on the other side are arranged, and the end of the locking arm is sandwiched between the end of the locking slider and the stop. The locking position and the unlocking position at the distal end of the locking arm are guided movably between the unlocking positions and urged in the locking position direction. A control lever is arranged so as to be superposed and swingable. A dial having a notch in the outer peripheral portion is provided in the vicinity of the portion so as to be rotatable, and the control lever is biased in a direction in which one end thereof is close to the outer periphery of the dial, while the base end portion of the locking slider and the control lever An engagement protrusion is formed on one end of the end, and an engagement hole long in the guide direction of the locking slider is formed on the other, and these are movably engaged, and the urging force of the control lever is greater than that of the locking slider. In addition, the trigger lever center is pivotally supported in a plane perpendicular to the shoji on the lock plate near the locking piece with respect to the handle shaft. Is biased in the direction approaching the locking piece, and on the other hand, the other end of the trigger lever that protrudes outside the locking plate is provided with a locking projection that protrudes to the surface side of the pedestal. In the normal state without adding A locking step that engages with the locking protrusion is formed in the locus of the other end of the trigger lever. When the handle is turned in the locking direction, the locking protrusion of the trigger lever is not in the closed position. A crescent lock characterized in that the handle is locked to the locking step on the surface of the base so that the handle is not rotated.

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