JPH1018663A - Lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damage to a sickle-shaped engaging piece by housing the engaging piece formed at a bent end section into a slit formed to the side face of a bolt for a lock body in a manner that the engaging piece can be projected and retracted. SOLUTION: When a lever is operated in the direction of door closing and a bolt 30 is projected from a lock body 10, the abutting section 31d of a sickle-shaped engaging piece 31 housed in the slit of the bolt 30 is pushed up on the projecting section 15 of the lock body 10, and two bent end sections 31b are protruded in the left-right horizontal directions. The end sections 31b are retained to the flange 53a of a receiving member 50 buried into a wall 5 and the lock body is locked. When the lever is operated in the opposite direction and the bolt 30 is retracted, the abutting section 31d is not pushed up onto the projecting section 15 while a small shaft section 31c is energized by a compression spring and the end sections 31b are retreated into the slit and slipped off from the flange 53a and the lock body is released. When a door is closed under the state, in which the bolt 30 is projected from the main body 10, the bolt 30 is sunk into the main body 10, and the engaging piece 31 and the receiving member 50 are not damaged. Accordingly, the lock body can be locked and released surely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock in which a bolt projects and retreats from a side end face of a sliding door, and more particularly, to a lock in which a locked sliding door can be removed from a guide frame as required. It is about.

[0002]

2. Description of the Related Art Many locks for sliding doors have a sickle-shaped locking piece that is interlocked with a lever or the like. In this type of lock, when closing the sliding door, the lever or the like is rotated to project the sickle-shaped locking piece, and the sickle-shaped locking piece is locked to a receiving member provided on the sliding door frame or the like. By the way, the operation of the sickle-shaped locking piece of the lock in the prior art is to rotate or move up and down on a vertical plane. That is, in the lock of the prior art, the sickle is pivoted from top to bottom as if swinging down, and the sickle-shaped locking piece is locked to the horizontal portion of the receiving member. Alternatively, on the contrary, the sickle-shaped locking piece is rotated upward from below, and locked on the horizontal portion of the receiving member. In any case, prior art locks lock the sickle-shaped locking piece to a horizontal portion of the receiving member.

[0003]

A lock used outdoors is prevented from being unlocked and the sliding door cannot be removed from the guide frame in order to prevent a thief or the like from entering the lock. On the other hand, a lock used indoors needs to be able to remove a locked sliding door from a guide frame in order to be able to rescue a person who is unwillingly trapped.

[0004] However, in the conventional sliding door lock, it was difficult to remove the sliding door from the locked state. That is, in order to remove the sliding door from the guide frame, it is absolutely necessary to move the sliding door vertically. However, the conventional sliding door lock is
The sickle-shaped locking piece rotates or moves up and down on a vertical plane, and locks the sickle-shaped locking piece on the horizontal part of the receiving member. The piece is hooked on the horizontal part of the receiving member. Therefore, it is difficult to move the sliding door up and down in the locked state with the conventional sliding door lock, and it is difficult to remove the sliding door in the locked state.

Accordingly, an object of the present invention is to provide a lock in which a locked sliding door can be removed from a guide frame as needed.

Further, in the conventional sliding door lock, since the sickle-shaped locking piece directly protrudes from the lock body, if the sliding door is closed while the sickle-shaped locking piece is erroneously projected, the sickle-shaped locking piece is locked. There was a problem that the piece was damaged. That is, in the sliding door lock, the sickle-shaped locking piece moves in and out in conjunction with the lever and the like as described above. Therefore, in the case of a sliding door lock, the sliding door should be completely closed, and then the lever, etc. should be operated to project the sickle-shaped locking piece and lock it to the receiving member, etc. In many cases, the sliding door is closed while it is protruding. In this case, the tip of the sickle-shaped locking piece collides with the receiving member or the like. Since the tip of the sickle-shaped locking piece is bent and the portion has a cantilever structure, the tip (sickle-shaped portion) may be bent by collision. Alternatively, the shaft portion may buckle due to the collision. Therefore, an object of the present invention is to provide a lock that does not damage the sickle-shaped locking piece even if the sliding door is closed accidentally.

[0007]

A first means for solving the above-mentioned problem is to form a slit in a side surface of the bolt at a lock where the bolt locked in the receiving member projects and retracts from the lock body. The lock is characterized in that a sickle-shaped locking piece having a bent end formed in the slit is housed so as to protrude and retreat.

According to the first means, when the bolt protrudes from the lock body, the sickle-shaped locking piece protrudes from the slit, and the bent end of the sickle-shaped locking piece is locked by the receiving member to lock. When unlocking, the bolt retracts into the lock body and the sickle locking piece retracts into the slit. In the above first means, the sickle locking piece is in the bolt. Therefore, when the sliding door is closed by mistake in operating the lever, the bolt first collides with the receiving member or the like. Since the bolt has higher rigidity than the sickle-shaped locking piece, it is less likely to be damaged by collision.

A second means for solving the above-mentioned problem is that in the lock according to the first means, a projection is provided in the lock body corresponding to the slit formed in the bolt,
The lock is characterized in that the sickle-shaped locking piece has a contact portion at a position where the bolt completely projects, the contact portion being in contact with the projection to project the bent end from the inside of the slit.

[0010] According to the second means, with the bolt in the receiving member, the projecting portion protruding into the lock body is used to remove the contact portion of the sickle-shaped locking piece housed in the slit. The push-up, bent end engages the receiving member and can be locked. When the lock is unlocked, the protrusion protruding into the lock main body does not push up the abutting portion of the sickle-shaped locking piece, so that the bent end portion comes out of the receiving member and retreats into the slit formed in the bolt.

[0011] A third means for solving the above-mentioned problems is that in the lock according to the first means or the second means, a slit is formed so as to open on each side surface of the bolt. The lock is characterized in that a sickle-shaped locking piece is housed in a direction in which a gap between bent ends is widened in a slit.

According to the above-mentioned third means, the sickle-shaped locking piece housed in the slit projects in the opposite direction, and the bent end engages with the receiving member. The sickle-shaped locking piece expands in the receiving member and locks with the vertical portion of the receiving member.

A fourth means for solving the above-mentioned problem is that in the lock according to any one of the first to third means, the bent end retreats into the slit. A lock is characterized in that a compression spring biasing in a direction is housed in a bolt.

According to the fourth means, as long as the protrusion protruding into the lock body does not push up the contact portion of the sickle-shaped locking piece,
The compression spring urges the bent end in a direction to retract into the slit. Therefore, the bolt does not protrude or retreat into the lock body while the bent end protrudes from the slit.

According to a fifth aspect of the present invention, in the lock according to any one of the first to fourth aspects, when the bolt receives a force toward the lock body, The lock is characterized by retreating into the lock body.

According to the fifth means, the bolt retreats into the lock body when receiving a force toward the lock body, so that the user closes the sliding door with the bolt accidentally protruding. Also, when the bolt collides with the receiving member or the like, the bolt escapes into the lock body.

A sixth means for solving the above problem is a combination structure of the lock described in any one of the first to fifth means and a receiving member, wherein the receiving member is A lock having a flange portion for reducing the width of the opening portion, wherein the bent end portion of the sickle-shaped locking piece of the lock is locked to the flange portion of the receiving member, and a combination structure of the lock and the receiving member. .

According to the above-described sixth means, even if the opening of the receiving member is narrow, the sickle-shaped locking piece is provided in a state where the bolt enters and exits the opening and completely enters the receiving member. Can be locked from the back side of the flange. In the sixth means, the sickle-shaped locking piece is
Since it is locked with the vertical part of the flange, the degree of freedom in the vertical direction remains even in the locked state. Therefore, even if the sliding door is locked, the sliding door can be moved up and down, and the sliding door can be removed.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a lock according to the present invention. FIG. 2 is an exploded perspective view of a main part of the lock according to the present invention. FIG. 3 is a sectional plan view of the lock according to the present invention in an unlocked state. FIG. 4 is a front sectional view in an unlocked state of the lock according to the present invention. FIG. 5 is a plan sectional view of the lock according to the present invention in a locked state. FIG. 6 is a front sectional view in a locked state in a locked state of the lock according to the present invention. FIG. 7 is a front view of a receiving member to be combined with the lock according to the present invention. FIG. 8 is a front view of the receiving member showing a state when the sliding door is removed.

In the lock according to the embodiment of the present invention, a slide member 20 and a bolt 30 are housed in a cylindrical lock body 10, and a thin plate-shaped sickle-shaped locking piece 31 is laterally inserted from a tip 30 a of the bolt 30. It is designed to be able to protrude and retreat in the direction (horizontal direction). Sliding door 1 on the side of lock body 10
Communication hole 1 for inserting a shaft (not shown) attached to
Drill one. A hub 40 described later is provided on the upper surface of the lock body 10.
A window portion 12 is formed to allow escape from the window.

Slide member 20 housed in lock body 10
As shown in FIG. 2, the top part 21 and the seat part 22 are bent into an L-shape as shown in FIG. 2, and a rectangular hole 23 is formed in the center of the top part 21 and the rear end part of the top part 21 is formed. Bends the protruding piece 24 outward,
A round hole 25 is formed in the seat 22. A swinging part 41 projecting from the hub 40 is engaged with the rectangular hole 23, and the hub 40
Is rotated, the slide member 20 moves back and forth. The tip of the swinging portion 41 slightly protrudes from the rectangular hole 23, but the window 12 formed on the upper surface of the lock body 10.
Can be moved within. The slide member 20 moves back and forth in the lock body 10 by the swing of the swing portion 41.

A square hole 42 is formed at the center of the hub 40 on which the swing portion 41 is protruded, and a lever (not shown) is formed in the square hole 42.
Attach the square axis with. The lever is adapted to be picked from the surface of the sliding door 1, and when the user operates the lever, the hub 40 rotates and the slide member 20 is rotated.
Moves back and forth. As shown in FIGS. 4 and 6, the hub 40 is provided with a projection 43 projecting in a direction opposite to the swinging portion 41. The protrusion 43 is provided to moderate the hub 40. The protrusion 43 has a sharp tip as shown in FIGS. 4 and 6, and the side surface is a plane provided with a predetermined angle. And the projection 43
The coil spring 45 is in contact with the flat surface of the end, and a moderation is provided. Therefore, the hub 40 is stabilized at the position as shown in FIG. 4 or FIG. 6, and becomes unstable at the intermediate position and does not stop. Therefore, the slide member 20 is stabilized at the advanced position or the retracted position, and does not stop at the intermediate position.

A projecting piece 24 is bent at the rear end of the top 21 of the slide member 20. Therefore, the long hole 13 into which the projecting piece 24 is engaged is formed in the side surface of the lock body 10. Protruding piece 24
Is guided by the elongated hole 13 so that the slide member 20 is not deformed.

The seat 22 of the slide member 20 has a round hole 2
The bolt 30 is fixed by the screw 26 inserted into the lock member 5, and the slide member 20 moves back and forth so that the bolt 30 projects and retracts from the front end face of the lock body 10. A protrusion 34 is provided on the side surface of the bolt 30. Therefore,
The lock body 10 also has an elongated hole 14 into which the projection 34 can engage and move. Further, as shown in FIG. 3, slits 35 for accommodating the thin plate-shaped sickle-shaped locking pieces 31 are formed in two rows from the side to the tip of the bolt 30.

The slit 35 is formed so as to open on the side opposite to the bolt 30, so that the sickle-shaped locking piece 31 can protrude in the left and right direction. Sickle-shaped locking piece 31
It is assumed that a shaft hole 31a is formed near the base end side from the center, a bent end part 31b is formed on the front end side, and a small shaft part 31c is protruded from the base end side. The bent end portion 31b and the small shaft portion 31c are formed so as to be symmetrical with respect to the shaft hole 31a.

The bolt 30 also has a shaft hole 32 formed in the longitudinal direction so as to be continuous with the shaft hole 31a of the sickle-shaped locking piece 31 housed in the slit 35, and a pin 33 is formed in the shaft holes 31a and 32. As a result, the two sickle-shaped locking pieces 31 swing about the shaft hole 31a as a center axis, and the bent end 31b projects and retreats from the inside of the slit 35 in the opposite direction. However, by winding the compression spring 34 around the small shaft portion 31c of the sickle-shaped locking piece 31, the bent end 31b of the sickle-shaped locking piece 31 is usually housed in the slit 35 of the bolt 30. Be inspired.

At the side of the lock main body 10 corresponding to the position of the slit 35 of the bolt 30, the protrusion 15 is projected inward, and when the bolt 30 advances, the small shaft portion 31c of the sickle-shaped locking piece 31 The contact portion 31d, which is the base end portion, is pushed up,
The bent end portion 31 b of the sickle-shaped locking piece 31 is projected from the inside of the slit 35. When the bolt 30 is retracted, the small shaft portion 31c of the sickle-shaped locking piece 31 is urged by the compression spring 34,
The sickle-shaped locking piece 31 is housed in the slit 35 of the bolt 30.

On the other hand, as shown in FIGS. 3 to 8, a receiving member 50 into which the lock bolt 30 is engaged is provided with a box 52 attached to the back side of a mounting plate 51 fixed to the surface of the wall 5, and It is assumed that a slide box 53 that can be moved within 52 is stored. The mounting plate 51 has an opening through which the bolt 30 enters and exits, and a flange 53a is bent inward at the entrance and exit of the slide box 53 so as to reduce the vertical width of the opening. The bent end portion 31b of the sickle-shaped locking piece 31 protruding from the slit 35 of the bolt 30 is engaged with the flange 53a. Therefore, it is necessary to attach the slide box 53 corresponding to the position where the bolt 30 projects and retracts. Therefore, the slide box 53 is
2 to be able to move left and right. The bent end portion 31b of the sickle-shaped locking piece 31 is a slide box 5
After the fixing position of the slide box 53 is adjusted so that the slide box 53 can be locked with the third flange 53 a, the slide box 53 is fixed to the box 52 by screws 54.

The lock and receiving member 50 according to the present invention are constructed as described above. Next, a method of locking and unlocking the sliding door 1 by bringing the sliding door 1 into contact with the wall 5 will be described.

When the door is opened and the sliding door 1 is separated from the wall 5 or not locked, as shown in FIGS. 3 and 4, the slide member 20 is retracted and the bolt 30 is moved to the lock body 10 as shown in FIGS. In a state of having retired. At this time, since the convex portion 43 protruding from the hub 40 is in contact with the coil spring 45, the swinging portion 41 engaged in the rectangular hole 23 of the slide member 20 maintains the posture inclined backward, and the bolt 30 Does not unexpectedly protrude from the lock body 10.

When the door is closed and the end surface of the sliding door 1 contacts the wall 5, the user turns the lever to rotate the hub 40. Then, after the convex portion 43 protruding from the hub 40 forcibly deflects the coil spring 45, the swinging portion 41 engaged in the rectangular hole 23 of the slide member 20 is tilted forward to tilt the slide member 20. Moves forward. Since the bolt 30 is fixed to the seat portion 22 of the slide member 20, the bolt 30 protrudes from inside the lock body 10 when the user turns the lever.

Immediately before the bolt 30 completely protrudes from the lock body 10, the contact portion 31 d of the sickle-shaped locking piece 31 housed in the slit 35 of the bolt 30 is engaged with the lock body 1.
0, and the two sickle-shaped locking pieces 31
Bent end portion 31b projects in the opposite direction from the inside of the slit 35. Then, as shown in FIGS. 5 and 6, the bent end portion 31b is locked in the state of being locked to the flange 53a of the slide box 53 of the receiving member 50 embedded in the wall 5. In the locked state, since the protrusion 43 protruding from the hub 40 is in contact with the coil spring 45, the bolt 30 unexpectedly retreats into the lock body 10,
It will not be unlocked.

When the user attempts to unlock, the lever is turned in the opposite direction to the above, and the swinging portion 41 protruding from the hub 40 is tilted backward. Then, since the swinging part 41 is engaged in the rectangular hole 23 formed in the slide member 20, the slide member 20 retreats. At this time, the contact portion 31d of the sickle-shaped locking piece 31 is not pushed up by the projection 15 of the lock body 10 and the small shaft portion 31c of the sickle-shaped locking piece 31
When the compression spring 34 wrapped around the small portion 31c urges the small shaft portion 31c, the bent end portion 31b of the sickle-shaped locking piece 31 retreats into the slit 35. Then, the bent end portion 31b of the sickle-shaped locking piece 31 comes off the flange 53a of the slide box 53 of the receiving member 50, and the door can be opened.

If the user accidentally closes the door with the bolt 30 protruding from the lock body 10, the bolt 30 sinks into the lock body 10 and the sickle-shaped locking piece 31 or the receiving member 50 is disengaged. It won't hurt. That is, when the tip of the bolt 30 hits something and the bolt 30 receives a force toward the lock body 10, the slide member 20 receives a force in the retreating direction and pushes the hub 40 through the rectangular hole 23. When the force exceeds a certain amount, the coil spring 45 bends and the hub 40 is inverted. As a result, the slide member 20 retreats,
The bolt 30 sinks into the lock body 10.

In this embodiment, since the hub 40 is moderated by the coil spring 45, the bolt 3
When 0 hits the receiving member 50 or the like and retreats to some extent, the hub 40 is forcibly rotated by the force of the coil spring 45, and the bolt 30 is forced into the lock body 10. In addition, the bolt 30 requires a certain amount of force at the beginning of movement in order to perform a moderate operation, and the bolt 30 receives a considerable impact, but the bolt 30 has a block-like shape. The rigidity is extremely high as compared with the conventional sickle-shaped locking piece. Therefore, the tip of the bolt 30 is
Even if it collides with the like, the bolt 30 is hardly hurt.

Next, a characteristic use method of the lock according to the present invention will be described. The lock according to the present invention can be removed from a guide frame (not shown) as needed, even with a locked sliding door. That is, when the lock of the present invention is locked, the bent end 31b of the sickle-shaped locking piece 31 is locked to the flange 53a of the slide box 53 of the receiving member 50. In other words, the bent end 31b of the sickle-shaped locking piece 31 is locked to the vertical portion of the receiving member 50. Therefore, although the sickle-shaped locking piece 31 has no degree of freedom in the pulling-out direction and the horizontal direction, there is no restriction on the movement in the vertical direction, and the sickle-shaped locking piece 31 has a considerable degree of freedom in the vertical direction.

Therefore, even when the sliding door is locked, the sliding door itself can be moved up and down. Therefore, in the lock of the present invention, the sliding door can be removed from the guide frame in the locked state. After that, when the sliding door 1 is slightly tilted about the portion where the lock of the sliding door 1 is attached as a center axis, the bent end portion 31b of the sickle-shaped locking piece 31 as shown in FIG.
Is the flange 53 of the slide box 53 of the receiving member 50
a, and the sliding door 1 can be removed.

The present invention is not limited to the above-described embodiment, but can be modified within the scope of the present invention. For example, the receiving member can be attached to the end surface of the sliding door instead of the wall.

[0039]

According to the present invention, the bent end portion to be locked to the flange of the receiving member is formed in a sickle-shaped locking piece, and the sickle-shaped locking piece projects and retreats from a slit formed in the bolt. By doing so, it is possible to securely lock and unlock. According to the third aspect of the present invention, even in the locked state, the sickle-shaped locking piece has a degree of freedom in the vertical direction, and the sliding door can be moved up and down in the locked state. Therefore, even a locked sliding door can be removed from the guide frame as needed. As a result, it becomes possible to rescue a person trapped in the sliding door.

In addition, according to the present invention, since the sickle-shaped locking piece is in the bolt, the sickle-shaped locking piece does not hurt even if the sliding door is closed with the bolt protruding by mistake.

[Brief description of the drawings]

FIG. 1 is a perspective view of a lock according to the present invention.

FIG. 2 is an exploded perspective view of a main part of the lock according to the present invention.

FIG. 3 is a plan sectional view of the lock according to the present invention in an unlocked state.

FIG. 4 is a front sectional view in an unlocked state of the lock according to the present invention.

FIG. 5 is a plan sectional view of the lock according to the present invention in a locked state.

FIG. 6 is a front sectional view in a locked state of the lock according to the present invention in a locked state.

FIG. 7 is a front view of a receiving member combined with the lock according to the present invention.

FIG. 8 is a front view of the receiving member showing a state when the sliding door is removed.

[Explanation of symbols]

 Reference Signs List 10 lock body 15 protrusion 30 bolt 31 sickle-shaped locking piece 31b bent end 31d abutment 35 slit 36 compression spring 50 receiving member 53a flange

Claims (6)

[Claims] 1. A sickle-shaped locking piece in which a slit is formed in a side surface of a bolt and a bent end portion is formed in the slit in a lock in which a bolt locked in a receiving member protrudes and retreats from the lock body. A lock characterized in that the lock is housed so that it can protrude and retreat. 2. The lock according to claim 1, wherein a projection is provided in the lock body corresponding to the slit formed in the bolt, and the sickle-shaped locking piece is provided at a position where the bolt completely projects. A lock having a contact portion that comes into contact with a protruding portion to project a bent end portion from the inside of the slit. 3. The lock according to claim 1, wherein
A lock wherein the slits are formed so as to open on the respective side surfaces of the bolt, and the sickle-shaped locking pieces are accommodated in the respective slits in a direction in which the interval between the bent ends increases. 4. The lock according to claim 1, wherein a compression spring for urging the bent end portion in a direction to retract into the slit is housed in the bolt. lock. 5. The lock according to claim 1, wherein the bolt retreats into the lock body when receiving a force toward the lock body. 6. A combination structure of the lock according to any one of claims 1 to 5 and a receiving member, wherein the receiving member has a flange portion for reducing the width of an opening portion, and has a sickle shape of the lock. The combination structure of a lock and a receiving member according to any one of claims 1 to 5, wherein the bent end portion of the locking piece is engaged with a flange portion of the receiving member.