JP4111658B2 - Sliding door sickle feeding mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sickle piece feeding mechanism for a sliding door lock.
[0002]
[Prior art]
Conventionally, the basic configuration of the sickle piece feeding mechanism is described in Japanese Utility Model Publication No. 57-110260. In the embodiment described in this publication, “the long horizontal trigger is slidably attached to the lock case. And, the horizontal trigger is a spring of a spring member whose tip is mounted in the lock case. The sickle piece, which is pivotally supported in the lock case by a force, is always urged to protrude from the lock case, while the rack piece provided on the horizontal trigger and the pinion provided on the sickle piece are connected via a power conversion mechanism. It can be moved forward and backward in conjunction with the horizontal movement of the horizontal trigger. "
In the above configuration, when the sliding door is closed, the tip of the horizontal trigger constituting the sliding door lock hits the front surface of the strike receiving plate. As a result, the sickle piece is rotated and delivered in the engagement direction in conjunction with the movement of the horizontal trigger that moves backward against the spring force of the spring member.
[0003]
However, the sickle piece feeding mechanism is in a state where the sickle piece is completely engaged only when the retreating horizontal trigger is completely retracted into the lock case, that is, when the tip of the horizontal trigger is substantially inserted into the lock case. If the dust between the door frame and the sliding door (for example, a gap of about 5 mm) is large, it is difficult to rotate the sickle piece to the end (completely engaged state: locked state), There was a problem.
[0004]
[Problems to be solved by the invention]
In view of the problems of the conventional basic configuration, the present invention provides a sickle piece feeding mechanism for a sliding door lock that can rotate a sickle piece to the end even if the dust is large by a simple mechanism and rational means. The purpose is to provide. The gist is that a double trigger structure is adopted.
[0005]
[Means for Solving the Problems]
The sickle piece feeding mechanism of the sliding door lock according to the present invention includes a part of the power conversion mechanism and is urged so that the tip portion always protrudes from the lock case by the spring force of the spring member provided in the lock case. A sliding door lock comprising a horizontal trigger and a sickle piece that is provided with a part of the power conversion mechanism, is pivotally supported in the lock case, and rotates in a direction to engage with the strike in conjunction with the backward movement of the horizontal trigger. In the sickle piece feeding mechanism, when the sliding door is closed, the horizontal trigger includes a small trigger piece that strikes the strike plate front surface and a spring for the small trigger piece that constantly biases the small trigger piece in the protruding direction. And a trigger main body that moves backward against the spring force of the primary operating spring, and the small trigger piece that is slidably fitted to the tip of the trigger main body.
[0006]
In the above configuration, the small trigger piece resists the spring force of the spring for the small trigger piece against the trigger body when the sliding door is pulled with a slight gap formed between the door frame and the sliding door. It is characterized by being able to retreat.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
An example of the embodiment of the present invention will be described with reference to FIGS. First, the environment for carrying out the invention will be described. Reference numeral 1 denotes a sliding door having a sliding door lock X, 2 denotes a lock case installed in a vertical wall of the sliding door 1, and the lock case 2 forms a part of the configuration of the sliding door lock X. 3 is a front fixed to the opening 4 side of the lock case 2, 5 is a slide operation plate as an example for locking the sickle piece, and this slide operation plate 5 is located at the back (right side in FIG. 1) of the lock case 2. It is built vertically.
[0008]
6 is a spring mounting spindle 7 whose end is fixed to the lock case 2 and a slide operation plate spring wound around a pin 8 fixed to the slide operation plate 5, and 9 is a plurality of springs provided at appropriate locations on the lock case. These guide pieces 9 have a function of guiding the vertically long slide operation plate 5 that slides in the vertical direction.
[0009]
A plurality of engaging members that are linked to the slide operation plate 5 are incorporated in the lower part of the lock case 2. One of them is a sickle piece engagement piece 12 provided on the front 3 side via a first horizontal shaft 11. This sickle piece engagement piece 12 has a protruding locking portion 15 at the upper end of a long plate-like spring receiving portion 14 that hangs downward from a notch 13 formed in the bottom wall 2 a of the lock case 2. The protrusion-like locking portion 15 has a function of locking the sickle piece when the sickle piece is temporarily locked or completely engaged.
[0010]
Reference numeral 16 denotes an engagement piece spring having a central portion wound around a first horizontal axis. One end of the engagement piece spring 16 is on the inner wall surface of the front 3, and the other end is a long plate-like spring support. Each part 14 is in pressure contact.
[0011]
The other one is a stover piece 18 that prevents rotation of the sickle piece engaging piece 12 when the sickle piece engaging piece 12 exhibits a locking function. The stocker piece 18 is pivotally supported by a second horizontal shaft 19 that is pivotally mounted on the lock case 2 so as to be positioned between the horizontal shaft 11 and the arm 17 of the slide operation plate 5. The stover piece 18 has an engagement pin 21 that engages with a notch-shaped engagement surface 20 formed at the lower end of the arm 17 at the rear end (right side in FIG. 1). Reference numeral 22 denotes a rotation restricting receiving plate for receiving the tip end portion 18 a of the stove piece 18.
[0012]
The above is the environment for carrying out the invention. However, these environmental members are not the specific requirements of the present invention, so the description of the specific action is omitted. Therefore, the main part of the present invention will be described below.
[0013]
The gist of the present invention is that the configuration of the trigger that hits the front surface of the receiving plate 32 of the strike 31 attached to the door frame 30 is a “double trigger structure”.
[0014]
Therefore, the sickle piece feeding mechanism Y of the sliding door lock X adopting the double trigger structure will be described. First, the horizontal trigger 35 includes a trigger main body 36 and a pin-shaped small trigger piece 37 that is slidably fitted to a tip end portion 36 a of the trigger main body 36.
[0015]
As shown in FIG. 3, the trigger main body 36 is formed in an elongated shape as a whole. The trigger main body 36 has a ridge engaging portion 38 that engages with a horizontal guide portion (guide groove, notch portion, etc.) 23 formed laterally on the side wall 2b of the lock case 2 on its outer wall. Therefore, the trigger main body 36 is slidably incorporated into the lock case 2 via the convex engaging portion 38. A part of the power conversion mechanism (a rack in this embodiment) 39 is provided on the lower side wall of the trigger body 36. With reference to FIG. 3, the trigger body 36 has a partition wall 40 in the central portion, and lateral hole-shaped spring accommodating portions 41 and 42 reaching the end surfaces are formed on the left and right sides of the partition wall 40.
[0016]
Therefore, the primary operating spring 43 is incorporated in the spring housing portion 42 corresponding to the rear end portion side of the trigger body 36. The primary actuating spring 43 has (1) a function of urging the tip 36a of the trigger body 36 so as to always protrude from the lock case 2, and (2) a receiving plate 32 of the strike 31 when the sliding door 1 is closed. When the small trigger piece 37 hits the front surface of the lens, the small trigger piece spring 45 that constantly urges the small trigger piece in the protruding direction is first contracted before contraction, and has a function of moving the trigger body 36 backward. Therefore, the spring force of the primary operating spring 43 is set to be “weaker” than that of the small trigger piece spring 45.
[0017]
On the other hand, the small trigger piece spring 45 is incorporated in the spring accommodating portion 41 corresponding to the distal end side of the trigger body 36. The spring 45 for the small trigger piece is (a) a function of urging the tip portion 37 a of the small trigger piece 37 so as to always protrude from the tip portion of the trigger body 36, and (b) between the door frame 30 and the sliding door 1. When the sickle piece 50 is completely engaged in a state where a slight gap a is generated in the case where the sliding door is further drawn, the spring of the primary operating spring 43 is in a contracted state, The small trigger piece 37 has a function of retracting into the trigger body 36.
[0018]
In the present embodiment, the small trigger piece 37 is formed in a pin shape as a whole, and is incorporated in the spring accommodating portion 41 together with the small trigger piece spring 45. A flange 46 is formed at the rear end of the small trigger piece 37. The flange 46 engages with a stepped locking surface 47 formed at the boundary between the spring housing portion 41 and the spring housing portion 42 of the trigger body 36.
[0019]
The sickle piece 50 is also provided with a part (pinion) 51 of the power conversion mechanism, is pivotally supported in the lock case via a fixed shaft 52, and engages with the strike 31 in conjunction with the backward movement of the horizontal trigger 35. Rotate in the direction you want. In addition, the sickle piece 50 has the front-end | tip part 53 engaged with the receiving plate 32 of the strike 31, and the rear-end part 54 which the above-mentioned sickle piece engagement piece 12 engages.
[0020]
In the above configuration, FIG. 1 shows an example of a state in which the sickle piece 50 is detached from the strike 31. On the other hand, FIG. 7 shows the case where the sickle piece 50 is locked, and then the sliding door 1 is pulled toward the door frame 30 so that the gap a becomes about 1 mm. As is clear from the comparison between these drawings, when the sliding door lock X is in the unlocked state and the sliding door 1 is opened (in this case, the sliding door 1 is considerably separated from the door frame 30), the distal end portion 36a of the horizontal trigger 35 is obtained. , 37a all project to a predetermined position. That is, the sickle piece 50 whose slide operation plate 5 is lowered and disengaged from the sickle piece locking piece 12 is subjected to power conversion by the trigger body 36 advanced by the spring force of the primary operating spring 43. It rotates into the lock case 2 through the mechanisms 39 and 51. In this case, as shown in FIG. 2, the tip portion 37 a of the small trigger piece 37 protrudes by the spring force of the spring 45 because there is no obstacle.
[0021]
Here, the operation of the main member will be described with reference to FIGS. When the sliding door 1 is closed, the small trigger piece 37 naturally comes into contact with the receiving plate 32 of the strike 31 on the door frame 30 side. FIG. 4 shows that when the sliding door 1 is closed, first, the trigger body 36 includes a small trigger piece 37 that strikes the front surface of the receiving plate 32 of the strike 31 and a small trigger piece spring 45 that constantly biases the small trigger piece in the protruding direction. And an example in which the primary operating spring 43 moves backward against the spring force. In this case, since only the primary operating spring 43 contracts, only the trigger body 36 moves backward into the lock case 2. Of course, the sickle piece 50 rotates around the fixed shaft 53 as a fulcrum as the trigger body 36 moves backward.
[0022]
FIG. 5 shows a case where the sickle piece 50 is completely engaged with the strike 31 when the sliding door 1 is closed and there is a gap (chilli) a of about 5 mm. Here, “complete engagement” means that the sickle piece 50 has rotated substantially completely in the engagement direction, and that the tip end portion 53 of the sickle piece 50 is not necessarily in contact with the back surface of the receiving plate 32. do not do. In such a case (when the dust is relatively large), it does not matter whether the small trigger piece 37 is slightly retracted into the trigger body 36. In short, the horizontal trigger 35 of the present invention can bring the sickle piece 50 into a completely engaged state in a state where the tip portion 37a of the small trigger piece 37 is in contact with the front surface of the receiving plate 32.
[0023]
FIG. 6 shows a case where the sickle piece 50 is completely engaged and the sliding door 1 is pulled toward the door frame 30 and the slight gap a at that time is “about 3 mm”. In this case, the small trigger piece 37 moves back into the trigger body 36 against the spring force of the spring 45.
[0024]
【Example】
In the embodiment, a pin-shaped small trigger piece 37 is slidably fitted in the tip 36a of the trigger body 36. However, depending on the design, the small trigger piece 37 is formed in a cap shape, A cap-shaped small trigger piece 37 may be externally fitted to the distal end portion 36 a via a spring 45.
[0025]
【The invention's effect】
As is clear from the above description, the present invention has the following actions and effects.
(1) The horizontal trigger 35 can bring the sickle piece 50 into a fully engaged state with at least the tip 37a of the small trigger piece 37 in contact with the front surface of the receiving plate 32. Therefore, even if the dust is large, for example, if the gap is within 5 mm, the sickle piece can be rotated to the end.
(2) Since the trigger has a double structure and the spring force of the primary actuating spring 43 is set to be weaker than that of the small trigger piece spring 45, the sliding door is simply pulled from about 5mm. Thus, for example, a completely engaged state of about 3 mm can be obtained.
(3) With a simple mechanism and rational means, the sickle piece can be rotated to the end “even if the dust is large”. Easy to combine.
[Brief description of the drawings]
1 to 7 are explanatory views showing an embodiment of the present invention.
FIG. 1 is a schematic explanatory view showing an example of a state in which a sickle piece is detached from a strike.
FIG. 2 is a schematic explanatory diagram of main members.
FIG. 3 is an exploded explanatory view of a main member (partly shown in a vertical cross section).
FIG. 4 is an explanatory diagram of a state in which the trigger body starts to operate.
FIG. 5 is an explanatory view showing a state where the sickle piece is completely engaged when the gap a is about 5 mm.
FIG. 6 is an explanatory diagram of a state in which the sickle piece is completely engaged (or the sliding door is pulled) when the gap a is about 3 mm.
FIG. 7 is an explanatory diagram of a state in which a sickle piece is completely engaged (or a sliding door is pulled) when the gap a is about 1 mm.
[Explanation of symbols]
X ... Sliding door lock, Y ... sickle piece feeding mechanism, 1 ... sliding door, 2 ... lock case, 3 ... front, 5 ... slide operation plate, 6 ... slide operation plate spring, 7 ... spindle, 12 ... sickle piece Locking piece, 18 ... stopper piece, 30 ... door frame, 31 ... strike, 32 ... receiving plate, 35 ... horizontal trigger, 36a, 37a ... tip, 36 ... trigger body, 37 ... small trigger piece, 38 ... ridge Engagement part, 39, 51 ... Power conversion mechanism, 40 ... Partition wall, 41, 42 ... Spring storage part, 43 ... Primary actuation spring, 45 ... Spring for small trigger piece, 46 ... Flange, 50 ... Sickle piece, 52 ... fixed shaft, 53 ... tip, 54 ... rear end, a ... gap.

Claims (3)

A horizontal trigger that has a part of the power conversion mechanism and is urged so that the tip part always protrudes from the lock case by the spring force of the spring member installed in the lock case, and also a part of the power conversion mechanism In the sickle piece feeding mechanism of a sliding door lock comprising a sickle piece pivotally supported in a lock case and rotated in a direction to engage with a strike in conjunction with a backward movement of the horizontal trigger, the horizontal trigger 35, when the sliding door 1 is closed, via the small trigger piece 37 that strikes the front surface of the receiving plate 32 of the strike 31 and the small trigger piece spring 45 that constantly urges the small trigger piece in the protruding direction, A sliding door lock sickle comprising: a trigger main body 36 that moves backward against the spring force of the operating spring 43; and the small trigger piece 37 that is slidably fitted to a tip 36a of the trigger main body. Fragment Out mechanism. 3. The small trigger piece 37 according to claim 1, wherein the small trigger piece 37 is used for the small trigger piece with respect to the trigger main body 36 when the sliding door is pulled in a state having a slight gap a generated between the door frame 30 and the sliding door 1. A sliding door lock sickle feeding mechanism characterized by being retractable against the spring force of the spring 45. In claim 1, the trigger main body 36 has a spring 45 for a small trigger piece and a small trigger piece 37 incorporated in a spring accommodating portion 41 on the front end side with reference to a partition wall 40 at the center, while the rear end A sliding door lock sickle feeding mechanism characterized in that a primary actuating spring 43 having a spring pressure set weaker than that of the small trigger piece spring 45 is incorporated in the spring housing portion 42 on the side portion. .

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