JP4350873B2 - Locking mechanism of sliding door lock - Google Patents

Description

[0001]
[Field of the Invention]
The present invention relates to a locking mechanism for a sliding door lock.
[0002]
[Prior art]
Conventionally, a configuration in which a sickle piece rotates in conjunction with a horizontal trigger having a part of a power conversion mechanism is described in Japanese Utility Model Publication No. 57-110260. Based on such a basic configuration, when the sickle piece is temporarily locked when the sliding door is closed, an operation member such as a knob is operated, and thereby a part of the transmission member is laterally moved. There has been proposed a configuration in which the slide operation piece to be moved is moved, and thus the sickle piece is locked as described above (for example, the first embodiment described in JP-A-8-86132).
[0003]
However, the present locking mechanism of the first embodiment has a complicated configuration. That is, the locking mechanism of the conventional embodiment includes a long plate-like slider (corresponding to the slide operation piece 25 of the present invention) provided in the lock case so as to be movable up and down, and a connection provided at the wide lower end of the slider. A fan-shaped locking piece having one end connected to the pin and having an engaging part engaged with the rear end of the sickle piece at the time of temporary locking at the other end, and stably holding the locking piece Therefore, the fan-shaped locking piece is supported by a pivot that is horizontally installed on the lock case.
[0004]
By the way, even in the conventional embodiment, when closing the sliding door, when the tip of the horizontal trigger constituting the sliding door lock hits the front surface of the strike plate, the sickle piece moves backward against the spring spring of the trigger spring. To do. The sickle piece is rotated and sent out in the engagement direction in conjunction with the movement of the horizontal trigger, but at that time, the tip of the sickle piece is engaged so that the horizontal trigger does not protrude due to the rebounding phenomenon of the sliding door. In this case, a stopper piece for horizontal trigger (corresponding to the auxiliary locking rod 15 of the present invention) is provided in the lock case so as to operate. It can be said that this stopper piece indirectly functions as a temporary locking member that prevents the sickle piece from retreating.
[0005]
However, since the stopper piece is pivotally supported on the lock case via a horizontal axis and must be constantly urged in the engaging direction by a spring, there is a problem that the number of components increases.
[0006]
[Problems to be solved by the invention]
In view of the problems of the conventional embodiments, the present invention aims to reduce the number of parts constituting the locking mechanism to the minimum necessary, and to reduce the cost by a simple mechanism and rational hand throwing. To do. It is another object of the invention to make the locking member into a reasonable shape and to improve the work efficiency in assembly. The gist thereof is that an engagement arm capable of locking the sickle piece is extended to the slide main body portion of the slide operation plate.
[0007]
[Means for Solving the Problems]
The locking mechanism of the sliding door lock according to the present invention includes a sickle piece 50 pivotally supported in the lock case 4, and a sliding operation piece 25 for locking is provided in the lock case 4 via guide means so as to be movable up and down. In the locking mechanism of the sliding door lock, the locking slide operating piece 25 is a vertically long slide guided by the inner wall surface of the side wall 4 b at the back of the lock case 4 and guide means 34 provided inside the lock case 4. a body portion 26, for this longitudinal slide main body 26 is integrally molded extending into sickle side, and the rear end portion of the engaged portion 55 of the sickle pieces in the strike and a fully engaged state when閉戸tip The engaging arm portion 28 engages with the engaging portion 28a. When the main locking slide operation piece 25 moves in the vertical direction during the main locking , the engaging arm portion 28 of the main locking slide operation piece 25 is moved. It is especially that receive the engaged portion 55 at its distal end To.
[0008]
In the above-described configuration, the slide operation piece 25 has one end wound around the spring mounting shaft 32 fixed to the lock case 4 and the other end wound around the pin 33 fixed to the slide operation plate 25. A spring 31 having a function is provided .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An example based on the embodiment of the present invention will be described with reference to FIGS. First, the environment for carrying out the invention will be described. X is a sliding door lock, and this sliding door lock X is attached to the sliding door 1. On the other hand, Y is a strike attached to the door frame 2, and this strike Y has a receiving plate 3.
[0010]
Next, members constituting the sliding door lock X will be described. Reference numeral 4 denotes a lock case installed in the vertical wall of the sliding door 1, and the lock case 4 also constitutes a part of the sliding door lock X. Reference numeral 5 denotes a front fixed to the opening side of the lock case 4. The front 5 is generally fixed to the cover plate of the lock case 4 in general, but detailed matters are omitted for convenience of explanation. In this specification, it demonstrates centering on the main member which comprises a locking mechanism.
[0011]
Now, when referred to as a sliding door locking mechanism, the “locking mechanism” has two implications. One is the meaning of temporary locking for the sickle piece, and the other is the meaning of this practice for the sickle piece. The locking mechanism of the present embodiment is mainly the latter, but each member constituting the temporary locking will also be described.
[0012]
(1) Member constituting temporary locking First, as a member constituting temporary locking, there is an elongate horizontal trigger 7 slidably mounted in the lock case 4. As shown in FIG. 4, the horizontal trigger 7 has a convex engagement that engages a horizontal guide portion (a guide long groove, a horizontal long hole, etc.) 8 formed laterally on the left and right side walls 4 a of the lock case 4 on the outer wall thereof. It has a portion (small protrusion, protrusion, etc.) 9. In this embodiment, the convex engaging portion 9 employs small protrusions having a total of four stopper functions that respectively engage with the horizontal elongated holes 8 of the lock case 4. Accordingly, the horizontal trigger 7 is incorporated into the lock case 4 via the convex engaging portion 9 so as to be movable in a horizontal range within a predetermined range. A part of the power conversion mechanism (a rack in this embodiment) 10 is provided on the lower side wall of the horizontal trigger 7.
[0013]
Accordingly, a biasing spring 12 is incorporated in the spring accommodating portion 11 corresponding to the rear end portion side of the horizontal trigger 7, and the biasing spring 12 is such that the tip end portion 7 a of the horizontal trigger 7 always protrudes from the lock case 4. It is energized as follows. When the sliding door 1 is closed, the urging spring 12 starts to contract when the tip portion 7 a of the horizontal trigger 7 abuts against the front surface of the striker Y receiving plate 3.
By the way, a sloped taper surface 13 is formed on the upper wall on the tip 7a side of the horizontal trigger 7 of this embodiment in consideration of the sliding contact relationship with an auxiliary locking rod described later.
[0014]
Next, as a member constituting the temporary locking (a member having a function of preventing the horizontal trigger from advancing), there is an auxiliary locking rod 15 that is slidably installed in the lock case 4. When the sliding door 1 is closed, the auxiliary locking rod 15 has a function of indirectly locking the sickle piece that has entered the strike Y (indirectly locked so as not to return naturally).
[0015]
As shown in FIG. 4, the auxiliary locking rod 15 has a vertical guide portion (guide long groove, vertical long hole, etc.) formed in the vertical direction on the left and right side walls 4 a of the lock case 4 on the outer wall, as with the horizontal trigger 7. ) Has a convex fitting portion (small protrusion, protrusion, etc.) 17 that engages with 16. In the present embodiment, the convex fitting portion 17 employs a total of four small protrusions that respectively engage with the vertical long holes 16 of the lock case 4. Therefore, the auxiliary locking rod 15 is assembled to the lock case 4 through the convex fitting portion 17 so as to be movable up and down. A spring support hole 19 for accommodating the spring 18 is formed at the upper end of the auxiliary locking rod 15. Furthermore, an inclined surface 20 is formed at the lower end portion 15a of the auxiliary locking rod 15 so as to be in sliding contact with the sloped tapered surface 13 of the horizontal trigger 7 described above.
[0016]
Thus, a spring 18 is incorporated in the spring support hole 19 corresponding to the upper end portion side of the auxiliary locking rod 15, and the spring 18 is connected to the lower end portion 15a of the auxiliary locking rod 15 as shown in FIGS. Is constantly pressed against the upper wall of the horizontal trigger 7. The lower end portion 15a of the auxiliary locking rod 15 and the upper wall of the horizontal trigger 7 are in a slipping pair relationship, but when the horizontal trigger 7 is retracted into the lock case 4 (locked state), the auxiliary locking rod 15 The 15 inclined surfaces 20 are in surface contact with the sloped tapered surface 13 of the horizontal trigger 7 in a lockable state.
[0017]
(2) Member constituting the lock As a member constituting the lock, there is a slide operation (locking) plate 25 mounted in the lock case 4 so as to be movable up and down. As shown in FIG. 1, the slide operation plate 25 for locking the sickle piece is incorporated in a vertically long shape at the back (right side in FIG. 1) of the lock case 4.
[0018]
Now, when the constituent parts of the slide operation plate 25 are roughly divided, the vertically long slide main body 6 that moves up and down along the side wall (corresponding to the rear wall) 4b at the back of the lock case 4, and the slide main body 26 Each member mounting head portion 27 is formed in a hook shape at the upper end portion, and an engaging arm portion 28 that extends in a branching manner from a portion near the lower end portion of the slide main body portion 26 toward the sickle piece side.
[0019]
First, each member related to each of these parts will be described. Reference numerals 31 denote eyeglass-like springs each wound around a spring mounting support shaft 32 whose one end is fixed to the lock case 4 and a pin 33 fixed to the head portion 27 of the slide operation plate 25. The eyeglass-like spring 31 for the slide operation plate has a click function, and when the slide operation plate 25 moves up and down, the placement of the spring central portion is switched to the left and right. Reference numeral 34 denotes a plurality of guide pins provided at appropriate positions of the lock case 4, and these guide pins 34 have a function of guiding the slide operation plate 25 that slides upward and downward. Similarly, a stopper piece 35 is provided at an appropriate position of the lock case 4. The stopper piece 35 stops the slide operation plate 25 that has been lowered to a predetermined position during the locking operation.
[0020]
Next, the shape of the slide operation plate 25 will be described in detail with reference to FIG. Reference numeral 36 denotes a plurality of vertical guide projecting walls that are continuously formed above and below the vertically long slide main body 26, and these vertical guide projecting walls 36 can slidably contact the inner wall surface of the rear wall 4 b of the lock case 4. . On the other hand, 37 is a horizontal stopper wall formed continuously with the mounting head 27, and this horizontal stopper wall 37 can contact the inner wall surface of the upper wall 4 c of the lock case 4. Reference numeral 38 denotes an attachment hole formed in the head portion 27. A knob type operation piece (not shown) is integrally attached to the attachment hole 38. Accordingly, in consideration of the positional relationship of the mounting hole 38, a vertically long opening 6 is formed in one side wall 4 a of the lock case 4.
[0021]
As described above, the engaging arm portion 28, which is one of the main parts of the main punch, extends in a branched manner from the portion near the lower end portion to the sickle piece side, but the distal end portion 28a is slightly in the palm of the hand. And is engaged with an engaged portion provided at a rear end portion of a sickle piece to be described later.
[0022]
(3) Sickle piece to be locked The sickle piece 50 is provided with a part (pinion) 51 of a power conversion mechanism similarly to the horizontal trigger 7 and is pivotally supported in the lock case via a fixed shaft 52 and horizontally. Rotate in the direction that engages with strike Y in conjunction with the backward movement of trigger 7. The sickle piece 50 has a bowl-shaped front end portion 53 that engages with the strike plate 3 of the strike Y and a wide rear end portion 54 that engages with the engagement arm 28 of the slide operation plate 25 described above.
[0023]
Thus, in this embodiment, an engaged portion 55 that is engaged with the distal end portion 28a of the engagement arm 28 of the slide operation plate 25 is provided on one side wall of the rear end portion 54 of the sickle piece 50.
[0024]
In the above configuration, FIG. 1 shows an unlocked state in which the sickle piece 50 is disengaged from the strike Y. On the other hand, FIG. 5 shows a state in which the sickle piece 50 rotates and protrudes from the lock case 4, and the sickle piece 50 is finally locked by the slide operation plate 25.
[0025]
(A) Unlocked state As is clear from the comparison of both figures, the sliding door 1 is lifted after the slide operation plate 25 is pulled up.
When the door is opened, the sliding door lock X changes from the locked state to the unlocked state. In this case, the tip 7a of the horizontal trigger 7 protrudes to a predetermined position.
[0026]
That is, when the slide operation plate 25 is lifted as shown in FIG. 1, the disengaged sickle piece 50 can be retracted into the lock case 4 with the fixing rod 52 as a fulcrum. Therefore, when the sliding door 1 is opened, the horizontal trigger 7 moves forward by the spring force of the urging spring 12, so that the sickle piece 50 rotates backward into the lock case 4 via the power conversion mechanisms 10 and 51. As a result, the tip 7 a of the horizontal trigger 7 protrudes from the lock case 4.
[0027]
When the front end portion 7a of the horizontal trigger 7 protrudes from the lock case 4, the auxiliary locking rod 15 climbs the sloped tapered surface 13 of the horizontal trigger 7 against the spring force of the spring 18, and the upper stage side. To the top wall.
[0028]
(B) Temporary Locking State to Present Locking State As described above, FIG. 5 shows a state in which the sickle piece 50 protrudes from the lock case 4 and the sickle piece 50 is finally locked by the slide operation plate 25.
[0029]
The sickle piece 50 pivotally supported in the lock case 4 can be moved forward and backward in conjunction with the horizontal movement of the horizontal trigger 7 via a power conversion mechanism by a rack 10 provided on the horizontal trigger 7 and a pinion 51 provided on the sickle piece. It is. That is, when the door is closed, the horizontal trigger 7 hits the front surface of the strike plate 3 and moves back into the lock case 4. In this case, the distal end portion 53 of the sickle piece 50 protrudes from the lock case 4 via the power conversion mechanisms 10 and 51. At this time, the lower end 15 a of the auxiliary locking piece 15 slides on the sloped tapered surface 13 of the horizontal trigger 7, and accordingly, the auxiliary locking piece 15 is lowered by the spring force of the spring 18. As a result, the inclined surface 20 of the lower end portion 15a of the auxiliary locking rod 15 engages with the sloped tapered surface 13 of the horizontal trigger 7 in a surface contact state. This is the so-called “temporary locking state for sickle pieces”.
[0030]
Therefore, to make the sickle piece 50 into the locked state, it is necessary to operate the slide operation piece 25. In this embodiment, when the slide operation piece 25 is lowered as indicated by an arrow, the engagement arm 28 is also lowered together with the slide main body portion 26, so that the tip end portion 28 a having a downward taper is a protruding shape of the rear end portion 54 of the sickle piece 50. Engage with the engaged portion 55. In addition, as shown in FIG. 5, when the locking slide operation piece 25 moves in the vertical direction during the main locking, the engagement arm portion 28 of the locking slide operation piece 25 has a sickle piece at its tip. 50 engaged parts 55 are received. Therefore, the backward movement of the sickle piece 50 is completely prevented.
[0031]
【Example】
The design of the means for stopping the slide operation plate 25 at a predetermined position can be variously changed. In this embodiment, the stopper piece 35 is provided on the lock case 4, but it is possible to bend and form a stopper piece that comes into contact with the upper wall of the horizontal trigger 7 that is retracted to the head portion 27 of the slide operation plate 25. . Further, the slide operation plate 25 may be stopped at a predetermined position via an attachment operation piece attached to the slide operation plate 25.
[0032]
In the present embodiment, the stopper case 35 is provided on the lock case 4, but even if this stopper piece 35 is not provided, the convex engaging portion 9 of the horizontal trigger 7 retracted as shown in FIG. It hits the edge of the notch that forms part 27. A plurality of guide pins 34 for guiding the slide operation plate 25 are provided. However, the spring mounting support shaft 32 may have a guide function instead of the upper guide pin 34. Further, the engaged portion 55 provided at the rear end portion of the sickle piece 50 is an arbitrarily formed protrusion formed on one side wall, but may be an engagement notch portion. As described above, the details can be freely changed in design by those skilled in the art.
[0033]
【The invention's effect】
As is clear from the above description, the present invention has the following actions and effects.
[0034]
(1) Since the number of parts constituting the locking mechanism can be reduced to the minimum necessary and the sickle piece can be locked with a simple mechanism and rational hand throwing, the cost can be reduced. That is, when the sickle piece protrudes, the sickle piece can be locked via the engagement arm of the slide operation plate by simply moving the slide operation plate in the vertical direction.
[0035]
(2) Since the locking member has a reasonable shape, it is possible to improve the work efficiency in assembling.
[0036]
(3) Temporary locking of other sickle pieces can be achieved with the minimum necessary parts.
[Brief description of the drawings]
1 to 5 are explanatory views showing an embodiment of the present invention.
FIG. 1 is a schematic explanatory view (an unlocked state) showing an example of a state in which a sickle piece is removed from a strike.
FIG. 2 is a schematic explanatory diagram of main members.
FIG. 3 is an exploded perspective view of a main member (relation between a sickle piece and a slide operation plate).
FIG. 4 is an exploded perspective view of main members (relationship between a horizontal trigger and an auxiliary locking rod).
FIG. 5 is a schematic explanatory view showing the present locked state.
[Explanation of symbols]
X ... sliding door lock, Y ... strike, 1 ... sliding door, 2 ... door frame, 3 ... receiving plate, 4 ... lock case, 5 ... front, 6 ... opening, 8 ... horizontal guide, 10 ... rack, 12 ... energizing Spring, 13 ... sloped taper surface, 15 ... auxiliary locking rod, 15a ... lower end part, 16 ... vertical guide part, 18 ... spring, 20 ... inclined surface, 25 ... slide operation plate, 26 ... slide body part, 27 ... Mounting head, 28 ... engaging arm, 28a ... tip, 31 ... slide operating plate spring, 34 ... guide pin, 35 ... Stover piece, 36 ... vertical guide protrusion, 50 ... sickle piece, 51 ... Pinion, 52... Fixed shaft, 53. Front end, 54. Rear end, 55.

Claims (2)

In the locking mechanism of the sliding door lock in which the sickle piece 50 is pivotally supported in the lock case 4 and the slide operation piece 25 for locking is provided in the lock case 4 through the guide means so as to be movable up and down. The locking slide operating piece 25 includes an inner wall surface of the side wall 4b at the back of the lock case 4, a vertically long slide body portion 26 guided by guide means 34 provided inside the lock case 4, and the vertically long slide body portion. extends into sickles one side is integrally molded to 26, and the engagement arm portion front end portion 28a against the rear end of the engaged portion 55 of the sickle piece engages in the strike and a fully engaged state when閉戸28, and when the book-locking slide operating piece 25 is moved in the vertical direction during the main locking, the engaging arm portion 28 of the book-locking sliding operation piece 25 55. A sliding door locking mechanism characterized by receiving 55 . The slide operation piece 25 is wound around a spring mounting shaft 32 having one end fixed to the lock case 4 and the other end is wound around a pin 33 fixed to the slide operation plate 25. sliding door lock locking mechanism, characterized in that it comprises a spring 31 having a click function.

Images