JPH0419182Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a door lock that has a sharp locking action. (Prior art) Among door locks, those equipped with a latch that can be engaged and detached from a so-called troyoke placed on the side of the stile and a trigger that controls the operation of this latch are easy to unlock and lock, and provide protection when the lock is locked. Due to its high performance, it is often used as door locks for houses and buildings. In this type of door lock, the latch is generally moved forward and backward in conjunction with handle operation, and maintains a constant protruding displacement, while a trigger that can move forward and backward is placed in parallel with the latch, and the trigger is activated. The operation of the latch can be controlled in conjunction with the latch. (Problem to be solved by the invention) However, conventional door locks of this type generally require a relatively large force to create displacement of the latch or trigger during locking, resulting in a problem that the responsiveness of the locking action is generally slow. It was hot. Therefore,
When a door equipped with such a door lock is closed and locked using, for example, an automatic door locking device, the ability of the closing device tends to be insufficient, making locking a time-consuming task, which increases the size of the door. I had a problem. It is an object of the present invention to provide a door lock that solves these conventional problems and has a simple structure that increases the sensitivity of the locking action and promotes high-speed response. (Means for solving the problem) Therefore, in the door lock of the present invention, in a door lock in which a latch head and a trigger are arranged side by side, an overhang is provided on the latch slide connecting the latch head, and the trigger is connected. The latch slide and the trigger block are provided with a protruding pin, and the latch slide and the trigger block are provided so as to be movable back and forth.
A trigger cam is rotatably disposed at a predetermined position between the latch slide and the trigger block, and the trigger cam is disposed so as to be able to engage with the protrusion and the pin, and when the trigger is extended, the pin is engaging a trigger cam and rotating the cam, positioning one end of the cam so that it can engage the overhang, and engaging the overhang or pin with the trigger cam when the latch head or trigger is retracted; Then, the cam is rotated in the opposite direction to when the trigger is protruded, making it possible to release the engagement between the trigger cam and the protruding part, thereby making the locking action more sensitive and faster responding, and also making it possible to close the door. It is characterized by reducing the amount of force required. (Embodiment) Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. In Figs.
a and the catch seat 3 are integrally screwed together, and the catch seat 3
An engagement hole 4 formed in the vertical stile 2 opens at the end surface of the vertical stile 2. Reference numeral 5 denotes a door that is attached to a spaced apart position of the vertical stile 2 so that it can be opened and closed, and a front panel 6 and a reinforcing plate 7 that is integrated with the case, which will be described later, are integrated at a position facing the seat 3 on the free end side of the door. It is screwed to
Two large and small holes 8 and 9 are formed at upper and lower positions facing the engagement hole 4. The case 10 has a box shape with a bottom, and one ends of opposing side walls 10a, 10a are fixed to bent pieces 7a, 7a integrated with the reinforcing plate 7, and a cover 11 is attached to the opening side of the case 10. . Bottom surface 10b of case 10
As shown in FIG.
3 and 14 are provided protrudingly, of which the pin 12 is removably attached, and these pins and the side wall 10a
The cover 11 is positioned by a pin 15 protruding from a position close to the cover 11. In the figure, 16 is a plate-shaped spring holder protruding from the bottom surface 10b, 17 is a cam insertion hole formed on the bottom surface 10b, and 18 is a wide rectangular recess formed at the corner of the bottom surface 10b. , facing the opening position of the hole 8, and 19 is a horizontally long rectangular convex portion formed on one side of the bottom surface 10b, and is disposed with its axial direction facing the opening position of the hole 9. Reference numeral 20 denotes a latch assembly, which includes a latch head 21 having a pointed end, and a latch head 21 having a pointed end.
1 and a latch slide 22 integrally connected to the latch slide 22;
A latch stopper 23 fixed to the slide 22
It is composed of. Of these, the latch head 21 is located at the end of the latch assembly 20 ,
With its tip facing the hole 8 position, the concave portion 18 is normally placed.
is housed within. As shown in FIG. 6, the latch slide 22 has a recessed chamber 26 whose periphery is partitioned by a connection block 24 and a rib 25, and this recessed chamber 26 forms an opening 27 on the side. , a horizontally long through hole 2 in which the spring receiver 16 can be inserted into the bottom surface of the concave chamber 26.
8 is formed. Connection block 2 above
4 is provided with an engaging protrusion 29 on the side thereof, and a latch stopper 23 is fixedly provided on the upper surface of the engaging protrusion 29.
The end portion on the same side as the engaging protrusion 29 is made to protrude as shown. The latch assembly 20 is arranged with the latch head 21 positioned at the opening of the hole 8, the latch slide 22 accommodated in the case 10 , and the spring receiver 16 engaged in the through hole 28. A latch spring 30 is interposed between the spring receiver 16 and the connection block 24, and while it constantly urges the latch assembly 20 outward, its forward and backward movements are controlled by the pins 15, 15 located on the sides thereof. The case 1 is guided by the recess 18 and is located behind the case 1.
Its backward displacement is regulated through the side wall 10a of 0. Reference numeral 31 denotes a cam spring receiver disposed near the cam insertion hole 17, which is a substantially arc-shaped spring chamber 3 whose periphery is partitioned by a partition wall 32, as shown in FIG.
3, and the side of the chamber 33 is opened through a notch 34. A recessed hole 35 into which the convex portion 19 can fit is provided on the bottom surface of the cam spring receiver 31, and its position is determined through the recessed hole 35 and a pin hole 36 protruding from the side of the partition wall 32. There is. A substantially L-shaped cam 37 is rotatably supported in the cam insertion hole 17 interposed between the latch slide 22 and the cam spring receiver 31. That is, as shown in FIG. 8, the cam 37 has a long first arm 40 and a slightly shorter second arm 41 on the circumferential surface of a boss 39 having a handle insertion hole 38 formed therein.
protrude at right angles to each other. Of these, the first arm 40 is housed in a concave chamber 26 formed in the latch slide 22, and its rotation angle is adjusted by the spring receiver 16.
and the side wall 22, and the second arm 41
is accommodated in a spring chamber 33 formed in the cam spring receiver 31. One end of this second arm 41 and the recessed hole 35
A cam spring 42 is inserted between the side partition wall 32 and the cam 37 to constantly urge the cam 37 in the counterclockwise direction.
The tip of the arm 40 is brought into contact with the spring receiver 16. In the figure, 43 is a wedge-shaped engagement groove formed in the lower part of the outer peripheral surface of the boss 39. 44 is a plate-shaped lock cam rotatably supported by the pin 13, one end of which is an engaging end 44a.
It is disposed so as to be able to engage with a recessed step 45 opened on the lower side of the latch slide 22 and a partition wall of a trigger block to be described later, and its rotation angle is regulated by them. An engagement pawl 46 that can engage with the engagement groove 43 is formed.
The lock cam 44 is mounted with the engaging claw 46 engaged with the engaging groove 43, and the lock cam 44 is always attached to the lock cam 44.
A lock cam spring 48 is inserted between a protrusion 47 protruding from the side of 4 and the end face of the cam spring receiver 31, and is biased clockwise to force the engaging end 44a into the recessed step 45.
can be engaged with. Reference numeral 49 denotes a trigger assembly, which consists of a trigger 50 and a trigger block 51 that integrally connects the trigger 50 and urges it inward. The trigger block 51 has a concave hole 52 on the bottom surface into which the protrusion 19 can fit, and a concave hole 35 formed in the cam spring receiver 31 is provided between the concave hole 52 and the concave hole 35 formed in the cam spring receiver 31. trigger spring 5
3 is inserted to urge the trigger assembly 49 outward. A protruding piece 54 is provided protruding from the side of the trigger block 51, and a locking wall 55 that can be engaged with the engaging protrusion 29 is protruded downward from one end of the protruding piece 54.
In the figure, reference numeral 56 denotes a partition wall formed below the base of the overhanging piece 54, which can be engaged with the engaging end 44a of the lock cam 44, and 57 and 58 denote a partition wall formed below the base of the overhanging piece 54.
These are the pins and protrusions that protrude from the top. Reference numeral 59 denotes a plate-shaped trigger cam rotatably supported by the pin 12, which is connected to the trigger block 51.
It has an elongated cam plate 60 housed above and projecting outwardly from its pivot point. The rotation angle of the cam plate 60 is regulated by the pin 57 and the protrusion 58, and the tip thereof is arranged so as to be engageable with the protrusion 23a of the latch stopper 23. In the figure, reference numeral 61 denotes an engagement hole formed in the base of the cam plate 60, which is capable of engaging with the pin 57, and rotates the cam plate 60 along with the engagement. 62 is a through hole formed in the bottom surface 10b of the case 10 . (Function) When the door lock configured as described above is locked, the latch head 21 projects outward from the hole 4 of the front panel 6 and engages with the engagement hole 4 of the catch seat 3, as shown in FIG. The tip of the latch slide 22, which is integrated with the latch head 21, is moved toward the front panel 6 inside the case 10 as shown in the figure. Further, an engaging end 44a of a lock cam 44 is engaged with a recessed step 45 formed on the lower side of the latch slide 22, and an engaging claw 46 formed at the other end of the lock cam 44 The latch head 21 is engaged with an engagement groove 43 formed in the boss 39 of the latch head 37 to prevent the latch head 21 from being retracted. Therefore,
Even if a force is applied to the latch head 21 in the inward direction of the door 5, movement in the same direction is prevented, and the state of engagement between the latch head 21 and the engagement hole 4 or the state of engagement into the troyoke 1 is maintained. Therefore, a locked state with sufficient defense capability can be obtained. On the other hand, during such locking, the trigger 50 protrudes to the outside of the front panel 6, and its tip abuts the surface of the catch seat 3, suppressing outward displacement, so that the trigger 50 and trigger block 51 are The above-mentioned suppressed portion is pushed back into the case 10 .
Therefore, the pin 57 protruding from the trigger block 51 moves to approximately the same position as the latch stopper 23,
At this position, the trigger cam 59 engages with the side edge of the cam plate 60, and the tip of the cam plate 60 is retracted from the movement range of the projecting portion 23a, thereby releasing the engagement between the two. Further, in this case, the cam 37 is connected to the second arm 41
By the cam spring 42 acting on the arm 4
1 comes into contact with the inner surface of the partition wall 32 of the cam spring receiver 31,
A steady state is maintained in which the first arm 40 is in contact with the spring receiver 16. To unlock the door from such a locked state, the handle (not shown) inserted into the handle insertion hole 38 may be rotated clockwise in FIG. 1. That is, when the handle is operated as described above, the cam 37 rotates against the restoring force of the cam spring 42 acting on the second arm 41, and the engagement groove 43 formed in the boss 39 of the cam 37 rotates. Like the cam 37, it is displaced clockwise in FIG. Therefore, the engagement groove 4 is inserted through the engagement claw 46.
The lock cam 44 engaged with the lock spring 48 rotates counterclockwise in FIG. It moves outward to release the engagement with the recessed step portion 45. In this way, when the handle is further rotated after the latch slide 22 is released from the locked state, the first arm 40 integrated with the cam 37
comes into contact with the rib 25 of the latch slide 22. When the handle is further rotated in this state, the latch slide 22 moves to the right in FIG. Matching hole 4
He was pulled out of the room and pulled towards door 5. On the other hand, as the latch slide 22 operates as described above, the engagement protrusion 29 protruding from the side of the connection block 24 is displaced together with the locking wall 55 protruding below the trigger block 51. approach. Then, when the latch head 21 is pulled out from the engagement hole 4 as described above, the engagement protrusion 2
9 has reached a position just before the locking wall 55, and if the handle is further rotated under these circumstances, the latch slide 22 will move further to the right in FIG. The protrusion 29 engages with the locking wall 55. For this purpose, the trigger block 51 with the locking wall 55 moves together with the latch slide 22 or the latch head 21 via the engagement projection 29, and the trigger 50, which is integral with the block 51, moves together with this. Retract from the surface of the catch seat 3. In this way, the latch head 21 and the trigger 50 move together, and the latch slide 22 moves further, so that its rib 2
5 comes into contact with the side wall 10a of the case 10 , the retraction operation of the latch slide 22 or the latch head 21 is stopped, and the retraction operation of the trigger 50 is also stopped at the same time, forming the state shown in FIG. 13. Under such conditions, the tip of the latch head 21 is drawn to approximately the same plane as the end surface of the door 5,
Further, the tip of the trigger 50 is drawn slightly closer to the door 5 than when it is locked as shown in FIG. 1, and a sufficiently unlocked state is formed. Therefore, after this, door 5
The door 5 can be opened by pushing and pulling. When the handle is released after opening the door 5, the cam 37 is moved to the boss 39 by the restoring force of the cam spring 42.
Rotate counterclockwise on the top of Figure 13 around the axis of
The first and second arms 40, 41 abut against the partition walls 32 of the spring receiver 16 and the cam spring receiver 31, respectively, and restore the original state. On the other hand, when the door 5 is opened, the latch assembly 20 and the trigger assembly 49 are moved to the left in FIG. 13 by the latch spring 30 and trigger spring 53, respectively. Among these, trigger assembly 4
9 moves until its trigger block 51 abuts against reinforcing plate 7, causing trigger 50 to protrude to its maximum displacement, while latch assembly 20 is restricted from protruding displacement of latch head 21 by trigger cam 59. That is, the cam plate 6 of the trigger cam 59
When unlocking, the tip of 0 is located within the movement range of the protrusion 23a of the latch stopper 23, as shown in FIG.
It is evacuated from the movement range of the pin 57 protruding from the trigger block 51. Under these circumstances, when the trigger assembly 49 protrudes and the trigger block 51 moves accordingly, the pin 57 engages with the edge of the engagement hole 61 as shown by the imaginary line in FIG. Then, the trigger cam 59 rotates counterclockwise in the figure around the pin 12, and the cam plate 60
The distal end of the protrusion 23 is positioned in the movement range of the protrusion 23.
At this time, the pin 57 is guided to the mouth edge of the engagement hole 6.
1 to prevent the trigger cam 59 from rotating in the above direction and to maintain its stop position. After the trigger cam 59 is in the standby state, when the protrusion 23a engages with the tip of the cam plate 60 in conjunction with the protrusion of the latch assembly 20 , the protrusion of the latch assembly 20 or latch head 21 is activated. Figure 14a
The situation shown in is formed. If the door is to be locked in such a situation, the door 5 may simply be closed.
That is, when the door 5 is closed from the state shown in FIG. spring 30
and is pushed back toward the door 5 against the restoring force of the trigger spring 53. In this situation, the latch assembly 20 , which prevents the trigger 50 from moving backwards, will actuate in advance of the trigger assembly 49. That is, when the latch head 21 engages with the end surface of the catch seat 3 and is displaced to the upper right in FIG. It retreats from the tip and releases the engagement with the trigger cam 59. In other words, a backward path for the trigger assembly 49 or trigger 50 is formed by the backward displacement of the overhang 23a. Therefore, when the trigger assembly 49 moves backward, the pin 57 that moves together moves in the direction of the imaginary line in FIG. The cam 59 is rotated clockwise in the figure around the pin 12, and the cam 59 is retracted from the movement range of the overhang 23a to urge disengagement with the overhang 23a.
4. Form the state shown in Figure b. In this case, the retraction displacement of the latch head 21 is increased from the trigger 50 by the initially set protrusion shown in FIG. 14a. Therefore, strictly speaking, when the tip of the cam plate 60 of the trigger cam 59 retreats from the moving range of the protrusion 23a, if the troyoke 1 is in front of the latch head 21, the latch head 21 can protrude. , the lockable state is quickly established. In this way, when the door 5 is further closed from the state shown in FIG. While the force increases, the rotational displacement of the trigger cam 59 increases, and the tip of the cam plate 60 sufficiently retreats from the movement range of the overhang 23a, and the pin 5 engages with the side edge thereof.
7 prevents the projecting portion 23a from rotating in the movement range direction. FIG. 14c shows such a state, in which the latch head 21 is already connected.
The tip has reached the opening position of the troyoke 1. In this way, when the door 5 is further closed and the latch head 21 reaches the position of the engagement hole 4 formed in the catch seat 3, the latch assembly 20 is rapidly protruded to the outside of the door 5 by the restoring force of the latch spring 30. The latch head 21 engages into the engagement hole 4, and its tip enters the inner part of the troyoke 1. When the open end of the through hole 28 formed in the latch slide 22 comes into contact with the spring receiver 16, the latch assembly 20 stops moving and maintains that state. Under such a condition, as shown in FIG. 14d, the concave step 45 formed at the lower side of the connection block 24 is positioned in the rotation range of the lock cam 44, so that it is always in the direction of engagement. The locked cam 44 is rotated clockwise in the figure by the lock cam spring 48 about the pin 13, and its engaging end 44a engages with the recessed step 45. Therefore, the latch assembly 20 or latch head 2
The latch 1 is locked by being prevented from moving backward by the lock cam 44, and the latch head 21 and the engagement hole 4 are kept in the engaged state to be locked. At the time of such locking, the tip of the cam plate 60 of the trigger cam 59 touches the protruding portion 23a as described above.
Since the latch assembly 20 is evacuated from the movement range and this state is maintained by engagement with the pin 57, the protruding operation of the latch assembly 20 is not hindered. In addition,
During this series of locking processes, as shown in the figure, the cam 37 maintains its fixed position without any operation.
An engaging pawl 46 of a lock cam 44 is engaged with an engaging groove 43 formed in the boss 39. In addition, if you want to match the door lock depending on the mounting direction of the door 5, loosen the screw 63 and attach the latch head 21.
is removed from the connection block 24, reversed, and then inserted into the block 24 and secured with screws.Meanwhile, the trigger 50 is pulled against the spring 64 built into the trigger block 51, and the trigger block 51 is rotated in the reverse direction. All you have to do is return it to its original position, and these operations are extremely easy.
This is also possible after the installation of item 1. (Effects of the invention) As described above, the door lock of the present invention is a door lock in which a latch head and a trigger are arranged side by side, and a protrusion is provided on the latch slide to which the latch head is connected, and a protrusion is provided on the trigger block to which the trigger is connected. A protruding pin is provided to move the latch slide and trigger block forward and backward, and a trigger cam is rotatably disposed at a predetermined position between the latch slide and the trigger block, and the trigger cam is moved from the extended position. and a pin, and when the trigger protrudes, the pin is engaged with a trigger cam to rotate the cam, and one end of the cam is positioned so as to be engageable with the projecting part; When the latch head or trigger is retracted, the lug or pin engages the trigger cam;
Rotate the cam in the opposite direction to when the trigger is protruding,
Since the engagement between the trigger cam and the protruding portion can be released, the locking action can be made more sensitive and responsive, and the force required to close the door can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the door lock according to the present invention when it is opened and shows the locked state, Fig. 2 is a front view showing the state of the end face of the door equipped with the door lock of the present invention, and Fig. 3 The figure is a cross-sectional view taken along the line A-A' in Figure 1, Figure 4 is a cross-sectional view taken along the line B-B' in Figure 1, and Figure 5 shows the assembled state of the case applied to the present invention. FIG. 6A is a front view showing an example of the latch assembly applied to the present invention, FIG. 6B is a bottom view of FIG. 6A, and FIG. 7 is an example of the cam spring receiver applied to the present invention. FIG. 8a is a front view showing an example of a cam applied to the present invention, and FIG. 8b is a front view showing an example of a cam applied to the present invention.
is a left side view of figure a, figure 9 a is a front view showing an example of the lock cam applied to the present invention, figure b is a bottom view of figure a, and figure 10 a is a trigger assembly applied to the present invention. FIG. 11 is a front view showing an example of the trigger cam applied to the present invention. FIG. 12 is a front view showing an example of the trigger cam applied to the present invention. Fig. 13 is a cross-sectional view showing the door lock according to the present invention in an unlocked state, and Fig. 14 a to d show the locked state of the door lock according to the present invention. FIG. 21...Latch head, 22...Latch slide, 23a...Protrusion, 50...Trigger, 51
...Trigger block, 57...Pin, 59...
Trigger cam, 60...cam plate.

Claims (1)

[Scope of utility model registration request] In a door lock in which a latch head and a trigger are arranged side by side, a protrusion is provided on the latch slide that connects the latch head, and a pin is provided that protrudes on the trigger block that connects the trigger, allowing the latch slide and trigger block to move forward and backward. A trigger cam is rotatably disposed at a predetermined position between the latch slide and the trigger block, and the trigger cam is disposed so as to be able to engage with the protrusion and the pin, while when the trigger is extended, , engaging the pin with a trigger cam and rotating the cam, positioning one end of the cam so as to be able to engage the overhang, and when retracting the latch head or trigger, the overhang or pin is engaged with the trigger cam. 1. A door lock characterized in that the trigger cam is engaged with the protruding portion, the cam is rotated in the opposite direction to when the trigger is protruded, and the engagement between the trigger cam and the protruding portion can be released.