JP3717548B2 - Lock latch function temporary stop mechanism - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a latch function temporary stop mechanism for a lock such as a handle lock or a knob lock.
[0002]
[Prior art]
Conventionally, for example, a handle lock or a knob lock is disclosed in, for example, Japanese Utility Model Publication No. 58-32516.
[0003]
Generally, this type of handle lock or knob lock includes a latch that protrudes from the front of the lock box and engages and disengages with the strike of the door frame.
[0004]
Thus, when the handle or knob is rotated, the latch is retracted in the direction of disengagement via the drive cam built in the lock box. When the hand is released from the handle or knob, the handle or knob is restored to the original state by the spring force of the spring member built in the lock box, and the latch is engaged with the strike.
[0005]
By the way, in recent years, it is said that it has entered an active period of earthquakes. However, when a large earthquake occurs, the door frame is often distorted and the door is not easily opened. In such a case, in the conventional handle lock or knob lock, the handle or knob must be rotated with one hand, and the door must be opened while the latch is released. In other words, since the door must be opened while performing an extra operation, there is a drawback that it is impossible to put in all the effort.
[0006]
[Problems to be solved by the invention]
In view of the above-described conventional drawbacks, the first object of the present invention is to temporarily stop the latch function when the door is not easily opened, and to temporarily open the door by applying full force. To get a stop mechanism. The second object is to be able to temporarily stop the latch function by a rational mechanism such as reducing the number of components. And the 3rd objective is that the combination of each member is easy.
[0007]
[Means for Solving the Problems]
The latch function temporary stop mechanism of the lock of the present invention is externally fitted to the square shaft 2 of the lock, and communicates with the bearing guide plate 12 housed in the handle seat 10 in the recess 15 and the recess 15 in the radial direction. A guide groove 16 is formed , and a rotational engagement plate 20 having at least one notch portion is fitted to the outer periphery of the recess 15 while cooperating with the angular shaft 2 in the recess 15. The guide groove 16 is slidably fitted and the inner end portion is engaged with the notch portion so that the latch function of the lock can be temporarily stopped when the square shaft 2 rotates by a predetermined amount. A lock means 25 including a push-type lock piece 26 that is removable and has an outer end protruding from the handle seat 10 is provided.
[0008]
In the above configuration, the rotation engagement plate 20 has a plurality of engagement protrusions 22 and notches 23 on the outer peripheral portion. The engaging ball 28 and the spring member 29 of the locking means 25 are selectively engaged with and disengaged from a plurality of engaging holes 27 formed in the side wall portion of the lock piece 26.
[0009]
[Action]
When trying to open the door with full force, the handle or knob is rotated by a required amount with one hand, and in that state, the locking piece of the locking means is pushed into the handle seat with a finger. As a result, the engaging ball slides into the other engaging hole as soon as it retracts from one engaging hole against the spring force of the spring member, and the engagement between the inner end of the lock piece and the rotation engaging plate is engaged. The mating protrusion engages in the locked state. As a result, the lock latch function is temporarily stopped. Therefore, it is possible to open the door with full power using both hands without extra operation.
[0010]
On the other hand, in order to release the lock of the lock means, the lock piece may be simply pushed down. Then, the engagement ball changes the position of the engagement hole and the handle or knob automatically returns, and the engagement protrusion of the rotary engagement plate rotated together with the handle or knob faces the lock piece.
[0011]
【Example】
Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. 1 to 6 show a handle lock 1 according to a first embodiment of the present invention.
[0012]
First, in FIG. 1, a handle lock 1 includes a handle 3 on one side, a handle 4 on the other side integrally connected to the square shaft 2, and a lock box 5 on which these handles 3 and 4 are mounted. The lock box 5 is provided with a cam 6 that is driven by the respective rotational operations of the inner and outer handles 3, 4, and the latch 8 advances and retracts from the front 7 by the rotational drive of the cam 6. In addition, 9 is a dead bolt which moves forward and backward through a thumb turn, and 10 is a handle seat.
[0013]
Thus, when the handle lock 1 is mounted on the door D, when the latch 8 is engaged with a strike (not shown), the handles 3 and 4 are positioned in a horizontal state, while the handles 3 and 4 are substantially omitted. When rotated downward by 30 degrees, the latch 8 is disengaged. Then, when the hands 3 and 4 are released, the handles 3 and 4 return to the horizontal state by the spring force of the spring member housed in the lock box 5, and the latch 8 exhibits its latch function.
[0014]
By the way, the present invention may be applied to either the handle 3 on the one side or the handle 4 on the other side, but for convenience of explanation, a case where it is applied to the handle 3 on the one side will be described.
[0015]
Next, in FIGS. 2 to 3, 3 is a handle on one side (inside the room) as described above. A shaft cylinder portion 3 a having a smaller diameter than the base portion is provided at the attachment base portion of the handle 3. The handle 3 is formed with a square hole 3b in the axial direction, and the square shaft 2 is fixedly fitted in the square hole 3b.
[0016]
A handle seat 10 supports the shaft cylinder portion 3a of the handle 3. The handle seat 10 is fixedly attached to one side of the door D.
[0017]
By the way, the handle seat 10 has a center hole in this embodiment, and has a cap-shaped decorative plate 11 having a guide notch 11a at an appropriate location on the peripheral wall portion, and an annular bearing provided in the decorative plate 11. It consists of a guide plate 12 and a ring-shaped presser plate 13 that closes the inner opening of the decorative plate 11.
[0018]
Thus, a shaft hole 14 that coincides with the center hole of the decorative plate 11 is formed at the center of the bearing guide plate 12, and communicates with the shaft hole 14 on the inner surface side thereof, and the shaft hole 14. A circular recess 15 having a larger diameter is formed, and a step-shaped guide groove 16 is formed in the radial direction so as to communicate with the shaft hole 14 and the recess 15 respectively. A slightly smaller spring housing groove 17 that intersects the guide groove 16 is formed at the lower end of the bearing guide plate 12.
[0019]
A through hole 18 is formed at the center of the presser plate 13, and the presser plate 13 has a function of pressing a bearing guide plate 12 and a rotation engagement plate 20 described later and a guide function of guiding a lock piece 26. .
[0020]
Reference numeral 20 denotes a rotary engagement plate that is fitted to the angular shaft 2 of the handle 3 and is fitted to the circular recess 15 of the bearing guide plate 12. The rotation engagement plate 20 cooperates with the handle 3. The rotation engagement plate 20 has a square hole 21 for the square shaft 2 at the center, and is formed in a cross shape as a whole in this embodiment.
[0021]
Thus, 22 is a plurality of engaging protrusions that protrude radially in the radial direction, while 23 is a plurality of notches positioned between the engaging protrusions 22. A total of four of these engagement protrusions 22 and notches 23 are provided with a predetermined interval in order to provide a direction (easy) property in attachment.
[0022]
Reference numeral 25 denotes lock means which is appropriately incorporated in the handle seat 10 and temporarily stops the latch function of the handle lock 1 when the handle 3 is rotated by a required amount.
[0023]
The locking means 25 is slidably fitted into the guide groove 16 of the bearing guide plate 12 as shown in FIGS. 3 and 4 and is projected from the guide notch 11 a of the decorative plate 11. A push-type lock piece 26, a plurality of conical engagement holes 27 formed in the side wall portion of the lock piece 26, an engagement ball 28 that selectively engages and disengages these engagement holes 27, The engaging ball 28 is urged so as to be always engaged with the engaging hole 27 and comprises a spring member 29 accommodated in the spring accommodating groove 17.
[0024]
Thus, the locking claw 26a that engages with the stepped portion 30 formed on the bearing guide plate 12 is provided at the inner end of the lock piece 26, while the projection that can hook the fingertip on the outer end thereof. 26b is formed.
[0025]
In the above configuration, if an earthquake occurs and the door D to which the handle lock 1 is attached is operated excessively (“the operation of holding the state where the handle 3 is pushed down and the latch 8 is disengaged with one hand”). When the door D is to be opened with full power, the handle 3 is first pushed down by one hand with a single hand as shown in FIG. When the handle 3 is pushed down, the latch 8 is disengaged from the strike through the drive of the cam 6, but at that time, the rotation engagement plate 20 rotates in cooperation with the handle 3. As a result, the notch 23 has shifted to a position facing the lock piece 26.
[0026]
Next, when the lock piece 26 is pushed into the handle seat 10 with a finger, the engagement ball 28 is temporarily retracted from the one engagement hole 27 against the spring force of the spring member 29 to the other engagement hole 27. And slide-engage. As a result, the inner end portion of the lock piece 26 and one engagement protrusion 22 of the rotary engagement plate 20 are engaged in the locked state, and the latch function of the handle lock 1 is temporarily stopped by the lock means 25. Therefore, the door D can be opened with full power using both hands without performing an extra operation.
[0027]
On the other hand, in order to release the lock of the lock means 25, a finger is put on the protrusion 26b of the lock piece 26 and simply pushed down. Then, the engaging ball 28 changes the position of the engaging hole 27 and the handle 3 automatically returns to the original position (horizontal state) shown in FIG. The mating protrusion 22 faces the lock piece 26.
[0028]
In addition, although this invention has demonstrated the handle lock 1, it is the same even if it is what is called a knob lock. Therefore, in the case of a knob lock, a rotation engagement plate is provided on the angular axis.
[0029]
[Different embodiments]
Next, different embodiments of the present invention shown in FIGS. 7 and 8 will be described. In the description of this embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
[0030]
In the second embodiment shown in FIGS. 7 and 8, the main difference from the first embodiment is that the rotary engagement plate 20A has at least one notch 23A into which the lock piece 26A enters the outer periphery. It is that.
[0031]
Thus, the rotation engagement plate 20A does not have a plurality of engagement protrusions protruding radially unlike the first embodiment, so that the rotation engagement plate 20A is connected to the angular axis of the handle via the square hole 21A. Although it cannot be freely assembled into 2A, if the push-type lock piece 26A enters the notch 23A of the rotary engagement plate 20A that cooperates with the handle or knob angular axis 2A, the latch function of the lock 1A is temporarily stopped. There are the same operations and effects as the first embodiment.
[0032]
【The invention's effect】
As is clear from the above description, the present invention has the following effects.
(1) When the door does not open easily, the door can be opened by temporarily stopping the latching function of the lock and applying the full power. Since the handle indirectly locked by the locking means 25 is inclined obliquely downward, it can be easily seen that the latch is disengaged from the strike by visual inspection.
(2) The latch function of the lock can be temporarily stopped by a rational mechanism such as reducing the number of components to be configured. That is, the rotation engagement plate (20, 20A) that cooperates with the angular shaft (2, 2A) of the handle or knob is fitted into the recess 15 of the bearing guide plate 12 provided in the handle seat 10, and the rotation engagement plate Since the lock means 25 having the push-type lock piece 26 engaged in the locked state is appropriately incorporated in the handle seat 10, the latch function can be achieved by simply pushing the lock piece 26 with a finger while the handle or knob is rotated. Can be paused.
(3) The lock of the rotary engagement plate or the handle can be easily released simply by sliding the lock piece 26 of the lock means with a finger (pressing down in this embodiment).
(4) In the case of the embodiment in which the rotation engagement plate 20 has a plurality of engagement protrusions 22 and notches 23 on the outer peripheral portion thereof, the combination of the members is easy.
[Brief description of the drawings]
1 to 6 are explanatory views of a first embodiment of the present invention. 7 and 8 are explanatory views of a second embodiment of the present invention.
FIG. 1 is a schematic explanatory diagram of a first embodiment to which the present invention is applied.
FIG. 2 is an exploded explanatory view of the present invention.
FIG. 3 is a schematic cross-sectional explanatory view showing an example mounted on a door.
FIG. 4 is a perspective view of a main part of the first embodiment.
FIG. 5 is an explanatory diagram when the latch functions.
FIG. 6 is an explanatory diagram when the latch function is temporarily stopped.
FIG. 7 is a perspective view of a main part of a second embodiment.
FIG. 8 is an explanatory diagram when the latch function of the second embodiment is temporarily stopped;
[Explanation of symbols]
1, 1A ... handle lock, 2, 2A ... square axis, 3, 4 ... handle,
5 ... lock box, 8 ... latch, 10 ... handle seat, 11 ... decorative plate,
12 ... Bearing guide, 13 ... Holding plate,
15 ... recess, 16 ... guide groove, 17 ... spring storage groove,
20, 20A ... rotation engagement plate, 21, 21A ... square hole,
22 ... engaging protrusion, 23, 23A ... notch,
25 ... Locking means, 26, 26A ... Lock piece,
27 ... engaging hole, 28 ... engaging ball, 29 ... spring member.

Claims (3)

A recess 15 and a guide groove 16 communicating with the recess 15 in the radial direction are formed in the bearing guide plate 12 housed in the handle seat 10 while being externally fitted to the angular shaft 2 of the lock. 15 is engaged with the angular shaft 2 and is fitted with a rotation engagement plate 20 having at least one notch portion on the outer periphery , and the handle seat 10 is rotated when the angular shaft 2 is rotated by a predetermined amount. In order to temporarily stop the latching function of the lock, the guide groove 16 is slidably fitted, the inner end portion can be engaged with and disengaged from the notch portion, and the outer end portion is the handle seat. 10. A latch function temporary stop mechanism provided with a lock means 25 including a push-type lock piece 26 protruding from 10 .   The lock latch function temporary stop mechanism according to claim 1, wherein the rotation engagement plate 20 has a plurality of engagement protrusions 22 and cutouts 23 on an outer peripheral portion. In claim 1, the lock means 25 includes an engagement ball 28 and a spring member 29, and the engagement ball 28 is selectively engaged with a plurality of engagement holes 27 formed in the side wall portion of the lock piece 26. A lock latch function temporary stop mechanism characterized by releasing.

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