JP5341709B2 - lock - Google Patents

Description

  The present invention relates to a lock installed at a free end of a door of a building, an apartment, or the like.

  Patent Document 1 states that “the dharma rotating force that is rotated by the operating force of the operating member or the driving force of the driving motor is applied to the first pin on the dead bolt side on one end and the second on the dharma side on the other end. Each of the pins has a drive link that is pivotally supported and converted into a forward and backward movement of the deadbolt.When locking, the deadbolt stopper is locked to the rear end surface of the deadbolt by the displacement of the operating arm that is different from the drive link. "A lock that enters the space between the inner wall of the rear wall of the box and prevents the dead bolt from retreating" is described.

The lock disclosed in Patent Document 1 has the following problems.
(A) The actuating arm 14 has one end connected to the first link 5 pivotally supported by the first pin 6 on the dead bolt side and the power connected to the rear end of the first link 5 via the movable connecting pin 12. Since the third link corresponds to the second link (swing plate) 8 on the transmission means 11 side, the link mechanism and the like are complicated.
(B) Further, the dead bolt stopper 19 has a connecting means (guide pin 17, guide long hole 16) and a vertical guide notch 20 formed in the lock box at the rear end of the third third link, respectively. Therefore, a separate member from the actuating arm 14 must be provided on the rear wall side of the lock box.
(C) The tip of the operating arm 14 corresponding to the third link is pivotally supported on the dead bolt via the pin 13 and the hook portion 15 is movably connected so as to be interlocked with the first link 5. Since the pin 12 must be locked, the combination is troublesome.
(D) Since it is necessary to move the movable connecting pin 12 in the vertical direction, the guide notch 21 must be formed in the dead bolt 4. Accordingly, the dead bolt 4 is easily deformed.
(E) Since the dead bolt is pushed out only by the drive link 5 and at the same time the dead arm stopper 19 of the wide plate is lifted by the operating arm 14 that cooperates with the drive link 5, a large load is applied to the power transmission means 11. It takes.

  Therefore, at present, various effects such as not applying a large load to the power transmission means 11, shortening the width dimension of the lock box in the door finding direction with respect to the protruding amount of the dead bolt, and being easy to assemble. Appearance of locks that satisfy at the same time is desired.

No. 3-36386

  The intended purpose of the present invention is not to apply a large load to the power transmission means, to shorten the width dimension of the lock box in the door locating direction with respect to the protruding amount of the dead bolt, to facilitate the assembly, etc. It is to provide a lock that satisfies the various effects. The second purpose is that it is not easily pushed back against the deadbolt even if there is an external attack such as a crowbar (ensure crime prevention). In addition, during the transition from the unlocked state to the locked state, the operating arm corresponding to the second link (not connected to the drive link) presses the dead bolt as a supplement to the drive link. It is possible to do.

  The lock according to the present invention has one end pivotally supported by the first pin on the dead bolt side and the other end pivotally supported on the second pin on the dharma side, and converts the dharma rotational force into the forward and backward movement of the dead bolt. A link is provided, and when locking, the deadbolt stopper enters the space between the rear end surface of the deadbolt and the inner wall surface of the rear wall of the lock box due to the displacement of the operating arm different from the drive link. In the lock for preventing the dead bolt from moving backward, the operating arm is a second link with respect to the drive link, and one end of the operating arm is connected to the peripheral end of the dharma and the second dharma side second link. It is pivotally supported by a third pin on the dharma side that is spaced apart from the pin by a predetermined distance, and has the dead bolt stopper integrally at the other end, and the dead bolt stopper is directly or indirectly attached to the lock box. Up and down direction While being guided by the guide notch, and wherein the locking time, a lateral rod protrusion to prevent retraction of the deadbolt.

(A) At the other end of the operating arm, which is the second link with respect to the drive link, at the time of locking, a piece-shaped protrusion or horizontal bar protrusion that is guided by a guide notch on the lock box side to prevent the dead bolt from retreating. Since it is provided directly, a simple link mechanism can be adopted. As a result, a large load is not applied to the power transmission means, and the width of the lock box door in the direction of finding the lock box is shortened with respect to the protruding amount of the dead bolt. It is possible to simultaneously satisfy various effects such as being easy to assemble.
(B) In the invention according to claim 2, since the deadbolt stopper is suspended in at least a vertical portion of the pair of curved guide notches provided on the left and right side walls of the lock box, Even if there is an external attack such as crowbar against the deadbolt, it must not be pushed back easily (ensure crime prevention).
(C) In the invention described in claim 3, in the middle from the unlocked state to the locked state, the operating arm corresponding to the second link presses the dead bolt as a supplement to the drive link. Therefore, it is possible to avoid applying a load as much as possible to the power transmission means.

1 to 7 are explanatory views showing a first embodiment of the present invention. 8 to 9 are explanatory views showing a second embodiment of the present invention.
Schematic cross-sectional explanatory drawing showing the working environment (when locked). Schematic cross-sectional explanatory drawing showing the working environment (when unlocked). The disassembled perspective view of the principal part. The schematic cross-section explanatory drawing seen from the rear end surface of the dead bolt at the time of unlocking. The schematic cross-section explanatory drawing seen from the rear end surface of the dead bolt at the time of locking. Schematic explanatory drawing showing the operating state of the main part (unlocking-halfway-locking). The schematic explanatory drawing which shows one of the effects of this invention (an example applied to the glass door). The principal part of 2nd Example is a disassembled perspective view. FIG. 5 is a schematic cross-sectional explanatory view similar to FIG. 4 of the first embodiment. FIG. 6 is a schematic cross-sectional explanatory view similar to FIG. 5 of the first embodiment.

  Hereinafter, the first embodiment will be described in detail with reference to FIGS. 1 to 7. 1 shows that when the door is closed, the dharma rotates counterclockwise, so that the dead bolt protrudes and engages with the door frame holder, and at the same time, the stopper at the other end of the operating arm is the dead bolt. The locked state in which the retreat of the door is prevented is shown.

  First, an implementation environment of the present invention will be described with reference to FIG. Although the configuration of Patent Document 1 is complex, for convenience of explanation, the same terms and the same reference numerals as Patent Document 1 are used.

  Reference numeral 1 denotes a lock box, 1a denotes a front wall of the lock box, 1b denotes a rear wall of the lock box, 1c denotes a wide side wall (hereinafter referred to as “side wall”), and 1d denotes a through hole. The lock box 1 is appropriately formed with fitting holes, pin holes, mounting holes, and the like. The lock box 1 is attached to the free end of the door 2 as is well known. Further, although not particularly shown, a drive motor, a power transmission mechanism for transmitting the drive force of the drive motor, detection means, and the like are appropriately disposed (for example, an electric lock).

  Here, X is a lock, Y is a door frame, and Z is a receiving metal fitting. The lock X of the present invention changes the deadbolt (a person skilled in the art) 4 to advancing and retracting (for example, horizontal movement) via the power conversion means 5 by the rotational force of the dharma (a person skilled in the art) constituting the power transmission mechanism. .

  The power conversion means 5 is the drive link 5 as in Patent Document 1. Therefore, the drive link 5 of the present invention also has the one end of the rotational force 3 of the dharma 3 that rotates by the operating force of the operating member (not shown) or the driving force of the driving motor on the first pin 6 on the dead bolt 4 side, The other end is pivotally supported by the second pin 7 on the Dharma side, and is converted into the forward and backward movement of the dead bolt 4.

  However, the drive link 5 of this embodiment has one end portion (tip portion) pivotally supported by the protrusion 4b provided on the upper side of the main body 4a of the dead bolt 4 via the first pin 6, while the other end portion. The (terminal portion) is different from the link of Patent Document 1 in that it is directly supported by the outer peripheral edge of the dharma 3 via the second pin 7.

  Next, also in the lock X of the present invention, when locking, the dead bolt stopper 19A is displaced between the rear end face of the dead bolt 4 and the rear wall 1b of the lock box 1 by the displacement of the operating arm 14A different from the drive link 5. It is the same in that it enters the space A between the inner wall surface and prevents the dead bolt 4 from retreating.

  However, the actuating arm 14A of the present invention is a second link (not connected to the drive link) with respect to the drive link 5. In addition, as described in Reference 1, the first, second, and Do not configure one link mechanism by linking the third one. Further, one end portion (upper end portion) is pivotally supported by a third pin 8 on the dharma side that is spaced apart from the second pin 7 on the dharma side at a peripheral end portion of the dharma 3, and the other end portion (lower end portion) Part) is integrally provided with a dead bolt stopper 19A, and the dead bolt stopper 19A is a vertical curve provided directly or indirectly (in this embodiment) on the left and right side walls 1c, 1c of the lock box. A horizontal bar which is guided by the shape guide notches 20A and 20A and falls into the vertical portion 20c corresponding to the end portion of the guide notches 20A during locking, thereby reliably preventing (locking) the retraction of the dead bolt 4. It is different in that it is a protrusion (this example).

  For example, the curved guide cutout portion 20A is formed to face a pair of guide fixing plates 9, 9 fixed to the inner wall surfaces of the left and right side walls 1c, 1c of the lock box 1, respectively.

  And, as shown in FIG. 1, for example, the curved guide cutout portion 20A is formed so as to draw a “slightly S-shaped curve” in the vertical direction, and from the start point 20a of the vertical portion corresponding to the upper end portion, the middle portion Arc-shaped or inclined portion 20b corresponding to, and a vertical portion 20c corresponding to the terminal portion. Further, as shown in FIG. 3, for example, as shown in FIG. 3, the dead bolt stopper 19A for the horizontal bar protrusion is engaged with the both ends of the left and right curved guide cutout portions 20A, 20A being erected. It is attached or formed integrally with the other end (lower end) of the pair of left and right operating arms 14A in parallel.

  In the above configuration, FIG. 4 is a schematic sectional explanatory view seen from the rear end face of the dead bolt when unlocked, FIG. 5 is a schematic sectional explanatory view seen from the rear end face of the dead bolt, and FIG. 6 is a schematic explanatory view showing the unlocking of the main part, the middle, and the locked state.

  As is clear from these drawings, the dead bolt 4 is retracted into the lock box 1 when unlocked. At this time, the drive link 5 is in a horizontal state, whereas the operating arm 14A is in a vertical state with respect to the upper side of the dead bolt 4. In addition, the first pin 6 and the second pin 7 of the drive link 5 are positioned on the same horizontal line, and a horizontal bar-shaped stopper 19A is positioned directly below the third pin 8 of the operating arm 14A. The lower end portion of the operating arm 14 </ b> A or the stopper 19 </ b> A is in contact with the upper end portion 10 a of the inclined receiving surface 10 formed at the rear end portion of the dead bolt 4.

  Therefore, for example, when a drive motor (not shown) is driven, the dharma 3 constituting the power transmission mechanism starts to rotate counterclockwise. When the dharma 3 rotates counterclockwise, the dharma 3 and the dead bolt 4 are connected via the first pin 6, the second pin 7 and the drive link 5. A pressing function (a tensioning function) is converted, and the dead bolt 4 moves horizontally in the protruding direction. When the dharma 3 continues to rotate, the rear end of the dead bolt 4 while the dead bolt stopper 19A is guided to the middle portion 20b of the curved guide notch 20A in the middle from the unlocked state to the locked state. The inclined receiving surface 10 is pressed. That is, the operating arm 14 </ b> A corresponding to the second link presses the dead bolt 4 as an auxiliary force to the drive link 5.

  During locking, when the drive link 5 is tilted at a predetermined position (for example, when the drive motor is stopped), the stopper 19A falls into the vertical portion 20c corresponding to the end point of the guide notch, and the dead bolt 4 moves backward. To prevent. In addition, the deadbolt stopper 19A is suspended in a locked state on the vertical portions 20c and 20c of the pair of curved guide notches 20A and 20A indirectly provided at least on the left and right side walls of the lock box 1. Therefore, the dead bolt 4 does not easily retract.

  By the way, FIG. 7 is a schematic explanatory view showing one of the effects of the present invention, and shows that the width dimension L1 of the lock box 1 in the door finding direction can be shortened with respect to the protrusion amount L of the dead bolt. That is, the projecting amount L of the dead bolt is generally the same projecting amount in a general lock. In the present invention, the other end portion (lower end portion) of the operating arm corresponding to the second link is used. Since the dead bolt stopper 19A of the horizontal bar protrusion is integrally provided, the length of the dead bolt itself and the space A between the rear end surface of the dead bolt and the inner wall surface of the rear wall of the lock box are reduced. Therefore, the side wall 1c of the lock box 1 can be narrowed. Accordingly, the lock X can be incorporated into the vertical rod 2a of the glass door 2 with a margin.

  In the present embodiment, it has been described that the dharma 3 starts to rotate by the driving force of a driving motor (not shown), but the rotating force of the dharma 3 may be any of known matters, known matters, and new matters. In other words, the dharma 3 may be rotated by either the driving force of the driving motor, the operating force by thumb turn picking or keying, or the urging force of the urging means. On the way from the unlocked state to the locked state, the dead bolt stopper 19A is preferably pressed against the inclined receiving surface 10 at the rear end of the dead bolt while being guided by the curved guide notch 20A.

  Next, FIGS. 8 to 10 are explanatory views showing a second embodiment of the present invention. In the second embodiment, the main difference from the first embodiment is a pair of guide fixing plates 9A and 9A fixed to the inner wall surfaces of the left and right side walls 1c and 1c of the lock box 1, respectively.

  In the first embodiment, horizontal notches (not shown) for guiding the dead bolt 4 are formed on the left and right side walls of the lock box 1, for example, but in the second embodiment, the ease of combining the members is improved. From the viewpoint, not only the side wall 1c of the lock box 1 but also the guide fixing plates 9A and 9A are formed.

  That is, the guide fixing plate 9A has a width dimension in the door finding direction of the lock box larger than that of the first embodiment, and the guide fixing plate 9A communicates with the curved guide notch 20A (this embodiment). ) Or horizontal notches 20d and 20d for guiding a pair of left and right guide protrusions 4c and 4c provided on the left and right side walls of the dead bolt 4 without communication. In this configuration, the guide fixing plate 9A also has a function of guiding the dead bolt 4. In the second embodiment, when the pair of left and right guide fixing plates 9A are fixed to the inner surface of the side wall 1c, the curved guide notch 20A and the horizontal notch 20d are necessarily provided on the side wall 1c. There is no need.

  The present invention is used in the fields of locks and joinery.

X: Lock, Y: Door frame, Z: Bracket, 1 ... Lock box, 1a ... Front wall, 1b ... Rear wall, 1c ... Side wall 2 ... Door, 3 ... Dharma, 4 ... Dead bolt, 5 ... Drive link, 6 ... 1st pin, 7 ... 2nd pin, 8 ... 3rd pin, 9, 9A ... Guide fixing plate, 14A ... Actuating arm, 19A ... Stopper, 20A ... Curved guide notch, 20a ... Start point, 20c ... End point (Vertical part).

Claims (3)

One end is pivotally supported by the first pin on the dead bolt side, while the other end is pivotally supported by the second pin on the dharma side, and a drive link that converts the dharma's rotational force into dead bolt advancement and retraction is provided. The deadbolt stopper enters the space between the rear end surface of the deadbolt and the inner wall surface of the rear wall of the lock box due to the displacement of the operating arm different from the drive link to prevent the deadbolt from moving backward. In the lock
The actuating arm is a second link with respect to the drive link, and one end portion of the operating arm is spaced apart from the second pin on the Dharma side by a predetermined distance from the peripheral end portion of the Dharma side. It is pivotally supported by 3 pins and has the dead bolt stopper integrally at the other end, and the dead bolt stopper is provided in a vertical guide notch provided directly or indirectly on the lock box. A lock which is a horizontal bar protrusion that is guided and prevents retraction of the dead bolt during locking. 2. The lock according to claim 1, wherein the deadbolt stopper is suspended in a vertical state between at least a pair of curved guide notches provided on the left and right side walls of the lock box. 2. The inclined receiving surface formed at the rear end portion of the dead bolt is pressed while the dead bolt stopper is guided by the curved guide notch in the middle from the unlocked state to the locked state. A lock characterized by that.

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