JPH0782943A - Latch lock - Google Patents

Abstract

PURPOSE:To smoothly unlock the latch of a latch lock used for a push-pull type handle and also open the door thereof. CONSTITUTION:A latch lock 1 is provide with a reversible latch 3 and the prevention of reversive rotation of the latch is released in accordance with operation of a push-pull handle. A sliding piece 2 is arranged at the rear end of latch 3. A fitting part 20 preventing the latch 3 from turning over by fitting to a part of the latch 3 is provided at the sliding piece 2. A release lever 32 is rotatably supported at the sliding piece 2. This release lever 32 swings around the axis, interlocking with the handle. When operating the handle, the release lever 32 presses the latch 3 to a pierced aperture 13 to release the sliding piece 2 from the latch 3 and release the connection of the fitting part 30 of the sliding piece 2 and the latch 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch lock. The latch lock of the present invention is particularly suitable as a latch lock operated by a push-pull type handle.

[0002]

2. Description of the Related Art A latch lock is a lock of a type in which the tip of the latch is projected from a through window and the latch is engaged with a metal fitting such as a fixed side door, and is widely used for entrance locks and other applications. By the way, in the conventional latch lock, the latch is interlocked with the handle of the door so that the latch sinks into the through-window and the door can be opened. However, the latch lock in which the latch simply sinks in the window has a problem that a large force is required to open the door. Therefore, in recent years, latch locks in which the latch is inverted by the opening / closing force of the door are commonly used.

A typical configuration of a latch lock in which the latch is inverted will be described below. FIG. 13 is a cross-sectional view of a main part of a conventional latch lock. Prior art latch lock 13
0 is in the sliding groove 131, the latch 132 and the slider 13
3 and a spring 135 are arranged. The latch 132 has a rear end portion cut out to form an engagement portion 137. On the other hand, the slider 133 is provided with an engaging portion that engages with the engaging portion 137 of the latch 132 described above. Here, the slider 133 is arranged in the sliding groove 131 so as to allow only linear movement. In addition, the spring 135
It is arranged on the rear end side of the slider 133, and the slider 133
The latch 132 is pressed against the through window 140 side.

In the prior art latch lock 130, the handle is connected to the slider 133, and the slider 133 is retracted in the direction opposite to the through window 113 by operating the handle. Then, the engaging portion of the slider 133 is latched by the latch 13.
The second engagement portion 137 is released, and the engagement relationship between the two is released. Therefore, when opening the door, the arrow G received from the bracket
Due to the directional force, the latch 132 is inverted as shown by the chain double-dashed line. Then, a component in the direction of receding with respect to the through window 140 is generated at the angle of the latch surface. Therefore, by the force in the direction of arrow G received from the receiving metal fitting, the latch 132 sinks into the through window 140, and the door is opened.

[0005]

DISCLOSURE OF THE INVENTION Prior art latch lock 1
When the lever handle or the grip ball is used for the handle 30, the door 30 can be comfortably opened and closed. However, when the conventional latch lock 130 is used in combination with a push-pull type handle, there is a problem that the unlocking operation is not smooth. That is, when the conventional latch lock 130 is used in combination with the push-pull type handle, there is a problem that the opening of the door becomes slightly heavy.

The reason for this is as follows. In a door operated by a lever handle or a ball, the lever is first turned to unlock the latch lock 130 and then the door is pushed open. That is, in the case of a lever handle or the like, there is a time difference between the disengagement of the latch and the pressing operation of the door. Therefore, even if the conventional latch lock 130 is used, the door can be opened and closed smoothly. On the other hand, in the door using the push-pull type handle, the unlocking operation of the latch lock 130,
The pressing operation of the door is performed at the same time. Using the previous example,
Latch 13 for doors that use push-pull handles
The latch 132 receives a force in the direction of the arrow G from the receiving metal fitting at a stage in which the engaging portion of No. 2 is engaged with that of the slider 133. Then the latch 132 tries to invert and the latch 13
The second engaging portion 137 strongly presses the engaging portion of the slider 133. Therefore, in the door using the push-pull type handle,
When the handle is operated, the latch 132 and the slider 133 are
The engagement with and becomes temporarily stronger.

On the other hand, the slider 133 tends to move backward by operating the push-pull type handle. However, as described above, the engaging portion 137 of the latch 132 and the engaging portion of the slider 133 are strongly pressed against each other by the force in the direction of the arrow G received from the receiving metal fitting, so that the both remain engaged. It is difficult to remove. Therefore, when the slider 133 moves backward, the latch 132 is dragged and moves backward. Further, the latch 132 is the slider 133.
While the engaging portion 137 of the latch 132 is engaged with that of the slider 133 while being continuously retracted by being pulled by, the latch 132 of course does not reverse. Therefore, the user needs a strong force to open the door.

It is an object of the present invention to provide a latch lock which can open the door smoothly, paying attention to the above problems of the prior art.

[0009]

The features of the present invention for achieving the above-mentioned object are that the tip portion projects from the through window and has a reversible latch, and the latch is reversible in response to a handle operation. In the latch lock for releasing the blocking, a slider is disposed on the rear end side of the latch, and the slider is provided with an engaging portion that engages a part of the latch and prevents the latch from being reversed. A release lever is axially fixed to the slider, and the release lever swings around the shaft in conjunction with a handle and pushes the latch toward the through-window side to pull the slider away from the latch and slide it. It is in a latch lock that releases the engagement between the engaging portion of the child and the latch.

[0010]

In the latch lock of the present invention, the slider is arranged on the rear end side of the latch, and the engaging portion provided on the slider engages a part of the latch to prevent the latch from being reversed. Therefore, when the door is closed, the latch protruding from the through window engages with the receiving metal fitting or the like on the fixed side, and the door is temporarily locked.

When the user operates the handle to open the door, in the latch lock of the present invention, the release lever pivotally supported by the slider swings in conjunction with the handle. Since the release lever is pivotally supported by the slider as described above, it swings and abuts the latch. The release lever presses the latch toward the window, and the reaction force forcibly separates the slider from the latch. Therefore, in the latch lock of the present invention, only the slider is retracted by the operation of the handle, and the latch is not dragged by the slider and retracted. As a result, in the latch lock of the present invention, the engagement between the engaging portion of the slider and the latch is immediately released by the operation of the handle.

[0012]

EXAMPLES Specific examples of the present invention will be described below. FIG. 1 is an exploded perspective view of a latch lock according to a specific embodiment of the present invention. FIG. 2 is a front view of the latch lock according to the specific embodiment of the present invention when the latch lock is temporarily locked. FIG. 3 is a front view of the latch lock of FIG. 2 in a state in which the handle is operated. FIG. 4 is a plan sectional view of the latch lock of FIG. 2 when temporarily locked. FIG. 5 is a plan cross-sectional view of the main part of the latch lock of FIG. 2 showing the behavior of the latch. FIG. 6 is a sectional view taken along line AA of FIG. FIG. 7 is a sectional view taken along line BB of FIG.

In the drawings, reference numeral 1 shows a latch lock according to a specific embodiment of the present invention. The latch lock 1 of this embodiment is roughly divided into a temporary locking mechanism and a main locking mechanism. First, the temporary locking mechanism will be described. In the temporary locking mechanism, the latch 3, the slider 5 and the spring 6 are arranged in the sliding portion 2.

Explaining in sequence, the sliding portion 2 is composed of the groove-shaped member 1.
It is surrounded by 0 and the lid member 11, and has a rectangular cross section. The sliding portion 2 is in the lock case 8, and its tip is open to the through window 13 of the lock case 8. A spring receiving member 9 is provided on the rear end side of the sliding portion 2. A notch 14 is provided on one end surface of the groove member 10. Further, a bracket 53 to be described later is attached to the lid member 11.

The latch 3 is integrally made of metal, and its shape greatly differs depending on the front end side protruding from the through window and the rear end side exclusively arranged in the sliding portion 2.
First, description will be made from the tip end side of the latch 3. The shape of the tip end side of the latch 3 is not different from the conventionally known latch, and is based on the orientation attached to the door as shown in FIG. The shape seen from above is triangular. Then, one side surface functions as a vertical surface 15 with respect to the receiving bracket of the door. The other side surface has an angle of about 45 ° with respect to the vertical surface 15 described above, and functions as an inclined surface 16 with respect to the receiving bracket of the door.

A flange 18 is provided at the boundary between the front end side and the rear end side of the latch 3. The flange 18 is
As shown in FIG. 1, it is provided on the surface of the top and bottom with reference to the orientation attached to the door. The front surface of the flange 18 is smooth and extends in a direction perpendicular to the vertical surface 15 of the latch 1 described above.

On the other hand, on the rear end side of the flange 18, the end portion on the inclined surface 16 side projects rearward, and the engaging portion 20 is formed at that portion. Further, a cutout concave portion 22 is provided on the rear end of the latch 3 on the side of the inclined surface 16. The cutout recess 22 has a substantially rectangular shape,
The rear end side of the latch 3 is open. Further, a slit 23 is formed from the cutout recess 22 to the vertical surface 15 side of the latch 3. A through hole 25 is provided on the rear end side of the latch 3 in the top-bottom direction with reference to the direction of attachment to the door.

The slider 5 is a generally U-shaped member, and is composed of upper and lower walls 26 and 27 and a rear end wall 28. Further, the upper and lower walls 26, 27 are notched on the tip side thereof, and an engaging portion 30 is formed. A notch 29 is also provided on the rear end side of the upper wall 26.

It should be noted that, in the latch lock 1 of this embodiment, the release lever 3 is provided on the rear end wall 28 of the slider 5.
2 is the point where the shaft is locked. As shown in FIGS. 1 and 2, the release lever 32 is an arcuate member when viewed from the front, and a roller 33 is provided on one surface of the tip end side thereof. The other end of the release lever 32 is folded back to form a contact portion 35. A through hole 37 is provided in the center of the release lever 32. The release lever 32 is attached to the rear end wall 28 by inserting the pin 38 into the through hole 37, and can swing about the pin 38.

Next, the assembly structure of the temporary locking mechanism of this embodiment will be described. The latch lock 1 according to this embodiment includes a sliding portion 2
Inside, the latch 3, the slider 5 and the spring 6 are sequentially arranged. That is, the latch 3 is arranged at the position closest to the through window 13 of the sliding portion 2. The latch 3 can be retracted and inverted inside the sliding portion 2. Latch 3 is flange 1
Since 8 contacts the inner wall of the through window 13, only the tip side can project from the through window 13. Further, the rear end side of the latch 3 is inserted into a groove surrounded by the upper and lower walls 26, 27 of the slider 5. The release lever 3 pivotally supported by the slider 5
The roller 33 at the front end of the latch 2 is provided with the notch recess 22 of the latch 3.
It is located inside (see Figure 2). The contact portion 35 on the rear end side of the release lever 32 is provided with the cutout 1 of the groove-shaped member 10.
4 protrudes to the outside of the sliding portion 2. The slider 5 linearly moves in the sliding portion 2 similarly to the known one.

A spring 6 is arranged between the slider 5 and the spring receiving member 9, and the slider 6 and the latch 3 are pressed by the spring 6 toward the through window 13.

Next, the lock mechanism used in this embodiment will be described. The locking mechanism employed in this embodiment is composed of two hubs 40, 41, a connecting crank 43 and a lock guide 45. The hub 40 is the groove-shaped member 1
It is rotatably attached to a hole provided at 0. On the other hand, the hub 41 is rotatably attached to the lid member 11 via a bracket 53.

The connecting crank 43 is a bifurcated member, and holes 46 and 47 are provided at the tips thereof. A protrusion 48 is provided near the one hole 47. The connecting crank 43 is arranged so as to straddle the sliding portion 2, and the holes 46 and 47 are respectively formed in the hub 40 and the hub 40.
It is attached to 41.

The lock guide 45 is a rod-shaped member having a small thickness, and a hole 50 is provided at one end thereof. A protrusion 51 is provided on the other end of the lock guide 45. The lock guide 45 has a tip end inserted into the slit 23 of the latch 1, and a pin 52 inserted into the hole 50 so as to be fixed to the rear end of the latch. Further, the other end of the lock guide 45 passes through a hole provided in the sliding portion 2 and projects to the outside of the sliding portion 2. Lock guide 4
The protrusion 51 on the other end side of 5 is fitted in a guide groove (not shown). Therefore, the end portion of the lock guide 45 that protrudes from the sliding portion 2 linearly moves in parallel with the sliding portion 2.

Next, the relationship between the latch lock 1 of this embodiment and the door and handle will be described with reference to FIG.
The latch lock 1 of this embodiment is arranged in the carved hole of the door in the same manner as the known one. Handles 55 and 56 are attached to the house side and the road side of the door, respectively. The handles 55 and 56 employed in this embodiment are push-pull type handles, one end of which is pivotally supported by the door to perform push-pull operation. A shaft 58 is integrally attached to the handle 55 on the house side. Furthermore, the handle 5 on the house side
A connecting member 57 is provided in the unit 5. Connecting member 5
7 swings around a shaft 60, one end of which is engaged with the shaft 58. The other end of the connecting member 57 has a release lever 3 protruding from the sliding portion 2 of the latch lock 1.
The second contact portion 35 is engaged. A thumb turn (not shown) is provided on the handle 55 on the house side, and the thumb turn is connected to the hub 40 of the locking mechanism.

On the other hand, the connecting member 6 is attached to the handle 56 on the road side.
1 is integrally attached. The tip of the connecting member 61 is engaged with another connecting member 65 via the pin 63. The connecting member 65 swings around the pin 67, and the other end side is engaged with the contact portion 35 of the release lever 32 of the latch lock 1. A cylinder 59 is provided on the road-side handle 56, and the cylinder 59 is connected to the hub 41 of the lock mechanism via a shaft 68.

Next, the operation of the latch lock 1 of this embodiment will be described. The latch lock 1 of this embodiment is as shown in FIGS. 2, 4 and 5 when the door is closed. That is, the slider 5 and the latch 3 are pressed toward the through window 13 by the spring 5, and the tip of the latch 3 projects from the through window 13 to the outside. At this time, the vertical surface 15 of the latch 3 is in a state of being vertical to the receiving metal fitting as shown in FIG.
8 is in contact with the inner surface of the through window 13.

The engaging portion 20 of the latch 1 is the slider 5
Is engaged with the engaging portion 30 of. Therefore, even if the user simply pushes the door, even if the latch 3 receives the force in the direction of the arrow C from the receiving metal fitting, the latch 3 does not reverse. Therefore the door will not open.

Next, when the user operates one of the handles 55 and 56, the contact portion 35 of the release lever 32 moves in the direction opposite to the through window 13 (arrow D direction). More specifically, when the house-side handle 55 is pulled in the arrow E direction, the handle 55 tilts and the shaft 58 also moves in the arrow E direction. Then, the connecting member 57 that engages with the shaft 58 rotates counterclockwise about the shaft 60, and the tip of the connecting member 57 moves the contact portion 35 of the release lever 32 in the arrow D direction.

Similarly, when the user pushes the roadside handle 56 in the direction of arrow E, the connecting member 61 tilts and the tip moves in the direction of arrow F. Then, one end of the connecting member 65 moves in the arrow F direction via the pin 63. Then, the connecting member 65 swings about the shaft 67, and the contact portion 35 of the release lever 32 is moved in the direction opposite to the through window 13 (arrow D direction).

When any one of the handles 55 and 56 is operated as described above, the contact portion 35 of the release lever 32 is moved to the through window 13.
And move in the opposite direction. Since the middle portion of the release lever 32 is attached to the rear end wall 28 of the slider 5 by the pin 38, the release lever 32 is attached to the pin 3 as shown in FIG.
Rotate clockwise around 8. In other words, the release lever 32 approaches parallel to the axial direction of the sliding portion 2.

Then, the roller 33 provided at the tip of the release lever 32 moves in the groove and the wall 69 on the tip side of the groove.
And the latch 3 is pressed toward the through window 13 side.
However, since the flange 18 of the latch 3 is in contact with the inner wall of the through window 13, the latch 3 does not move. Therefore, the release lever 32 receives a reaction force of pressing the latch 3, and the slider 5 itself retracts to the side opposite to the through window 13. That is, the swinging of the release lever 32 causes the slider 5 to be forcibly separated from the latch 3. Therefore, as shown in FIGS. 3 and 5B, the engagement between the engaging portion 20 of the latch 1 and the engaging portion 30 of the slider 5 can be released.

Then, when the handle 55 is pulled or the handle 56 is pushed, the latch 3 receives a force in the direction of arrow C from the metal fitting, and the latch 3 is inverted as shown in FIG. 5C. As a result, the vertical surface 15 of the latch 3 has an inclination angle with respect to the receiving fitting, and the force in the direction of arrow C received from the receiving fitting causes the latch 3 to sink into the through window 13. Therefore, the engagement of the latch 3 with the receiving fitting is released, and the door is opened.

As described above, in the latch lock 1 of this embodiment,
The release lever 32 rotates in conjunction with the handles 55 and 56, and the release lever 32 forcibly separates the slider 5 from the latch 3. Therefore, the slider 32 retreats independently, and the latch 3 does not follow the slider 32. Therefore, in the latch lock 1 of this embodiment, the inversion prevention of the latch 3 is released smoothly, and the door can be opened with a light force.

Next, a method for permanently locking the latch lock 1 of this embodiment will be described. The lock of the latch lock 1 of this embodiment is
This is done by operating the cylinder 59 or a thumb turn (not shown). The case of operating the cylinder 59 will be described as an example. When the cylinder 59 is rotated, the shaft 68 interlocking with the cylinder 59 is rotated, and the hub 41 is further rotated.
Rotates. Then, as the hub 41 rotates, the connecting crank 43 rotates around the sliding portion 2 and transmits the rotational force to the rear surface side of the groove-shaped member 10 of the sliding portion 2. Then, the protrusion 48 of the connecting crank 43 contacts the lock guide 45 and pushes it. Here, since the lock guide 45 is coupled to the latch 3 through the pin 52, the lock guide 45 is pressed, so that the latch 3 loses the room for reversing and retracting. As a result, the latch 3 is prevented from reversing and retracting regardless of the operation of the handles 55 and 56, and is in the locked state.

Next, a modified embodiment of the present invention will be described. The latch lock 70 of the modified embodiment is intended to facilitate the change of the mounting direction of the latch.
FIG. 8 is an exploded perspective view showing a main part of a latch lock according to a modified embodiment of the present invention. 9: is a front view of the principal part of the latch lock of FIG. 7 which shows the behavior of a latch and a slider. Figure 10
FIG. 8 is a plan cross-sectional view of a main part of the latch lock of FIG. 7, showing behaviors of the latch and the slider. FIG. 11 is a front view of the main part of the latch lock of FIG. 7 when the hand of the latch is changed.

The latch 71 employed in the latch lock 70 of this embodiment has a vertical surface 72 and an inclined surface 73 on the tip side,
Further, the fact that the flange 74 is provided at the boundary between the front end side and the rear end is the same as the latch 3 of the previous embodiment.
On the other hand, the configuration of the latch 71 of this embodiment different from that of the previous embodiment is that the engaging portion 20 is provided at the end of the flange 18 in the latch 3 of the previous embodiment, whereas In the latch 71, the engaging portion 75 is provided at the center of the flange 74. Incidentally, the latch 71 does not have the cutout concave portion as in the previous embodiment.

The slider 77 is a substantially U-shaped member similar to that described above, and is composed of upper and lower walls 78 and 79 and a rear end wall 80. In this embodiment, the upper and lower walls 78 are particularly used. , 79 are notched in a rectangular shape at the center of the tip thereof, and an engaging portion 81 is formed at that portion. Further, both sides of the rear end of the upper wall 78 are cut out. The rear end wall 80 is thinner in the width direction than the upper and lower walls 78 and 79,
In addition, the rear end wall 80 is located at the center in the width direction of the upper and lower walls 78, 79. Further, the rear end wall 80 is provided with a through hole 82, and a semicircular cutout 83 is provided on the surface on the through window 13 side.

As the release lever 85, a bifurcated one is adopted in this embodiment. That is, the release lever 85 is formed by connecting the plate member 87 with the contact portion 88. The two plate-like members 87 have holes 90 for mounting pins,
A hole 91 for mounting the roller is provided. Release lever 8
5 is arranged such that the plate member 87 straddles the rear end wall 80 of the slider 77. A pin 93 is inserted through a pin mounting hole 90 provided in the two plate-shaped members 87 of the release lever 85 and a through hole 82 provided in the slider 77, and the release lever 85 has the pin 93. It is attached to the slider 77 so as to be swingable around.

A roller 95 is rotatably mounted in a roller mounting hole 91 provided on the tip side of the release lever 85. And the release lever 85 is the slider 77.
The side surface of the roller 95 is attached to the rear end wall 80.
It coincides with the semicircular cutout 83.

When the latch lock 70 of this embodiment is unlocked from the temporarily locked state, the handle (not shown) is operated to move the connecting member 65 so that the contact portion 88 of the release lever 85 is passed through the window 1.
Retreat to the other side of 3. Then, similarly to the previous embodiment, the release lever 85 swings around the pin 93. Then, the roller 95 provided at the tip of the release lever 85 leaves the semicircular notch 83 of the slider 77, contacts the rear end of the latch 71, and presses the latch 71 toward the through window 13.

As in the case of the previous embodiment, since the flange 74 of the latch 71 is in contact with the inner wall of the through window 13, the latch 71 does not move, but receives a reaction to cause the slider 77 to move.
It moves to the opposite side of the through window 13. That is, the release lever 8
By swinging 5, the slider 77 is forcibly separated from the latch 71. Therefore, the engagement between the engaging portion 75 of the latch 71 and the engaging portion 81 of the slider 77 can be released.

Next, a method of changing the hand of the latch 71 using the latch lock 70 of this embodiment will be described. Latch lock 7
To change the hand of the latch 71 of 0, the front plate 96 of the latch lock, that is, the plate provided with the through window 13 is removed, and the hand of the latch 71 is reversed. Specifically, set the latch 71 to 18
The latch 71 is returned to the sliding portion 2 again by rotating 0 °. Then, the front plate 96 of the latch lock 70 is attached again.

The state at that time is as shown in FIG. 10. The engaging portion 75 of the latch 71 engages with the engaging portion 81 of the slider 77, and the slider 77 is provided on the rear end surface of the latch 71. The roller 95 of the release lever 85 attached to the roller abuts. That is, in the latch 71 used in this embodiment, the engaging portion 75 is provided at the center of the rear end surface of the flange 74. Therefore, the latch 71 used in this embodiment does not change the position of the engaging portion 75 even if the latch 71 is mounted in the wrong way. Therefore, even if the latch 71 is attached by mistake, the engaging portion 74 of the latch 71 can be engaged with the engaging portion 81 of the slider 77 without any trouble.

A release lever 85 for pressing the latch 71
In the present embodiment, has a bifurcated shape and is arranged so as to straddle the rear end wall 80 of the slider 77. The roller 95 that directly presses the latch 71 penetrates the two plate-shaped members 87 of the release lever 85 and is attached. Therefore roller 9
5 has a length almost equal to the length of the latch 71 in the width direction. Therefore, even if you attach the latch 71 by mistake,
The roller 95 can contact the rear end of the latch 71. Therefore, even if the latch 71 is attached by mistake, when the release lever 85 is rotated, the slider 77 is separated from the latch 71, and the engagement between the slider 77 and the latch 71 is released.

As described above, the latch lock 70 of this embodiment
Has the effect that the latch can be easily changed.

In the above-mentioned two embodiments, the configuration of FIG. 4 has been described as an example of the push-pull type handle which is particularly suitable for the present invention. However, it is desirable to apply it to the latch lock of the present invention. The configuration shown in FIG. FIG. 12 is a plan sectional view of a latch lock according to a modified embodiment of the present invention.

The handle adopted in the latch lock 100 of this embodiment is a push-pull type handle as in the previous embodiment, but in this embodiment, either the house side handle 101 or the road side handle 101, 102 is used. The device is designed so that the latch can be unlocked by pushing or pulling.

More specifically, the handle 10 on the house side
1 is attached so as to swing in the directions of arrows H and I around the pin 103. Two pins 105 and 106 are integrally fixed to the handle 101, and both move around the pin 103 as the handle 102 is operated. A pin 109 is provided at the center of the pins 105 and 106. The pin 109 is attached to a fixing member (not shown) and has no mechanical fitting with the handle 102. Connecting member 108
Are attached so as to be swingable about a pin 109. Two contact pieces 110 and 111 are provided around the pin 109 of the connecting member 108. The surfaces of the contact pieces 110 and 111 opposite to the pin 109 are in contact with the pins 105 and 106 of the handle 102. That is, the house-side surface of the contact piece 110 is in contact with the pin 105, and the pin 106 is in contact with the other contact piece 111.

The other end of the connecting member 108 has a latch lock 1
Contact part 1 of the release lever protruding from the sliding part 112 of 00
13 is engaged. When the house side handle 102 is pulled, for example, in the direction of arrow I, the pin 105 rotates counterclockwise about the pin 103 and pushes the connecting member 108 to rotate the connecting member 108 counterclockwise about the pin 109. Let Therefore, the other end of the connecting member 108 has an arrow J
The contact portion 113 of the release lever is moved in the arrow J direction.

On the contrary, when the handle 102 is pushed in the direction of arrow H, the pin 160 is rotated clockwise about the pin 109 and pushes the connecting member 108. Connection member 10 at this time
The rotation direction of 8 is counterclockwise as in the case described above, and the other end of the connecting member 108 has the contact portion 1 of the release lever.
13 is moved in the direction of arrow J. That is, the handle 1 on the house side
The latch lock 100 is unlocked by pressing or pulling 02.
The structure of the road side will be explained.
02, a first connecting member 116, and a second connecting member 117.
Equipped with. The handle 102 is attached so as to swing about the pin 115 in the directions of arrows H and I. A pin 118 is integrally fixed to the handle 102.

The first connecting member 116 has a notch 119 on one end side, and pins 120 and 121 are integrally attached to the other end side. An elongated hole 123 is provided between the pins 120 and 121. Second connecting member 117
Is provided with two contact pieces 124 and 125 at one end. The second connecting member 117 is swingably attached to the pin 127, and the other end side thereof is in contact with the contact portion 113 of the release lever.
Is in contact with.

The first connecting member 116 has the elongated hole 123 inserted into the pin 127, and therefore the first connecting member 116 moves linearly with some swinging.
The pins 120 and 121 of the first connecting member 116 are in contact with the contact pieces 124 and 125 of the second connecting member 117, respectively. The notch 119 of the first connecting member 116 is fitted with the pin 118 of the handle 102. Handle 1
When 02 is pulled in the direction of arrow H, the pin 118 moves in the direction of arrow I around the pin 115, and the first connecting member 116 moves in the direction of arrow I. Then, the pin 120 pushes the contact piece 124 of the second connecting member 117, and the second connecting member 117 is pressed.
Is rotated clockwise about the pin 127. Then, the contact portion 113 of the release lever is moved in the arrow J direction.

Conversely, when the handle 102 is pushed in the direction of arrow I, the first connecting member 116 moves in the direction of arrow H. However, in this case, the pin 121 abuts on the abutment piece 125, and the second connecting member 117 is rotated clockwise about the pin 127 as in the case described above. Therefore, the handle 102
Even if is pressed in the direction of arrow I, the latch lock 100 is unlocked.

[0055]

In the latch lock of the present invention, the release lever pivotally supported by the slider swings as the handle is operated. Since the release lever is pivotally supported by the slider, the release lever contacts the latch, presses the latch toward the through window, and the reaction force pulls the slider away from the latch. Therefore, in the latch lock of the present invention, only the slider is retracted by the operation of the handle, and the latch is not dragged by the slider and retracted. Therefore, the latch lock according to the present invention has an effect that the latch can be released smoothly and the door can be opened with a light force.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a latch lock according to a specific embodiment of the present invention.

FIG. 2 is a front view of the latch lock according to the specific embodiment of the present invention when the latch lock is temporarily locked.

FIG. 3 is a front view of the latch lock shown in FIG. 2 when a handle is operated.

FIG. 4 is a plan sectional view of the latch lock of FIG. 2 when temporarily locked.

5 is a plan cross-sectional view of the main part of the latch lock of FIG. 2 showing the behavior of the latch.

6 is a cross-sectional view taken along the line AA of FIG.

7 is a sectional view taken along line BB of FIG.

FIG. 8 is an exploded perspective view showing a main part of a latch lock according to a modified embodiment of the present invention.

9 is a front view of the main part of the latch lock of FIG. 7 showing the behavior of the latch and the slider.

10 is a plan sectional view of a main part of the latch lock shown in FIG. 7, showing behaviors of a latch and a slider.

11 is a front view of the main part of the latch lock of FIG. 7 when the hand of the latch is changed.

FIG. 12 is a plan sectional view of a latch lock according to a modified embodiment of the present invention.

FIG. 13 is a front view of a main part of a latch lock according to a conventional technique.

[Explanation of symbols]

 1 70 Latch Lock 2 Sliding Part 3 71 Latch 5 77 Slider 6 Spring 13 Through Window 18 74 Flange 20 75 Engagement Part 22 Notch Recess 30 81 Engagement Part 32 85 Release Lever 33 95 Roller 35 Abutment Part

Claims (1)

[Claims] 1. In a latch lock, the tip of which protrudes from a through window and which has a reversible latch, and which cancels the reverse blocking of the latch in response to a handle operation, a slider is arranged on the rear end side of the latch. The slider is provided with an engaging portion that engages with a part of the latch to prevent the latch from being turned over, and the slider has a release lever pivotally attached thereto. And swinging about the shaft in conjunction with the above, pressing the latch toward the window side to pull the slider away from the latch, and disengaging the engaging portion of the slider from the latch. Latch lock.