JPH0671823U - Heart lock - Google Patents

Abstract

(57) [Summary] [Purpose] There is a problem that the tablet is damaged due to erroneous operation,
Since the dust size of the door is not constant, the joint pin does not engage with the frame. The present invention aims to solve such problems. A drive lever 48 provided on a hub 46 is engaged with a slider 52, the slider 52 is connected to one of a pair of holder plates 59 via links 56 and 63, and the tips of the pair of holder plates 59 are connected to a spring 60. The lock pin 39 is provided at one end of the precaution lever 38 and the joint pin 43 is provided at the other end.
The flat surface portion 41 provided in the above was clamped by the tips of the pair of holder plates 59.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety lock provided on a door, and more particularly to a safety lock having an adjusting function for the dust size of the door and a safety function for preventing a damage accident of the safety lever.

[0002]

[Prior art]

 As a conventional technique relating to a heart lock, there is a technique described in Japanese Utility Model Publication No. 1-142773. As shown in FIG. 10, this caution tablet is provided with a pin hole 3 in a front wall 2 which is a front wall of a box-shaped lock case 1, and a lever accommodating concave portion 4 below the pin hole 3. The lock pin 6 provided at one end of the precaution lever 5 is loosely fitted.

A joint pin 7 is provided at the other end of the precaution lever 5, and the spring 8 inserted between the lock case 1 and the lock pin 6 urges the precaution lever 5 in a direction to be accommodated in the lever accommodating recess 4. To be done. The hub 9 rotatably fitted in the lock case 1 has a substantially rectangular outer surface and is provided with protrusions 10 and 11.

Above the hub 9, an engaging recess 14 that is engageable with the projection 10 is formed at the lower end of a drive lever 13 whose upper end is pivotally attached to a shaft 12 erected on the lock case 1. A long hole 15 is formed above the engaging recess 14. The push plate 16 that is provided so as to be able to advance and retreat toward the lever accommodating recess 4 is provided with a shaft portion 17 that engages with the elongated hole 15 and a pusher 18 that can penetrate the hole provided in the lever accommodating recess 4.

A dead bolt 20 is provided below the hub 9 so as to be retractable from a dead insertion hole 19 formed in the front 2, and a recess 21 that can engage with the protrusion 11 is formed in the rear portion of the dead bolt 20. To be done. The hub 9 has a spring 22 that presses against the outer surface of the hub 9, and is unlocked by a spring 22 as shown in FIG. 10, a dead locking angle that is rotated 90 degrees clockwise from the unlocking angle, and a counterclockwise direction by 90 degrees from the unlocking angle. It is positioned at the lock-locking angle that has been rotated once.

When the hub 9 is at the unlocking angle, as shown in FIG. 10, the guard lever 5 is housed in the lever housing recess 4 and the dead bolt 20 is retracted in the front 2, so that the door is opened. It is possible. When the hub 9 is rotated 90 degrees clockwise from the unlocking angle by the thumb turn on the indoor side, the projection 11 pushes the recess 21, and the dead bolt 20 projects and engages with the hole 23 of the strike S on the frame side. Enter and lock the door.

When the hub 9 is rotated 90 degrees counterclockwise from the unlocking angle by the thumb turn on the indoor side, the protrusion 10 is engaged with the engaging recess 14 and then the engaging recess 14 is moved toward the front 2. Since the drive lever 13 is pushed, the drive lever 13 pivots clockwise around the shaft 12 as a fulcrum, the pusher plate 16 moves in the front direction, and the pusher 18 pushes the guide lever 5 out of the lever accommodating recess 4. The joint pin 7 of the precaution lever 5 pushed out is engaged with the hole 24 provided in the strike S, and the precaution lock is locked.

[0008]

[Problems to be solved by the device]

 Such precautions also have the following problems. (1) Depending on the door, there may be large or small gaps between the door and the frame side (the size of dust), and if a precautionary lock is attached to a door with large size of the dust, the protruding joint pin will cause There is a problem that it cannot enter the hole, and conversely, if a precautionary lock is attached to a door with a small dust size, there is a problem that the precautionary lever 5 strikes during the locking of the precautionary lock.

(2) The locking lock is to be locked from the indoor side when the door is closed, and is opened after unlocking the locking lock, and the locking lock is locked when the door is accidentally opened. However, if the door is closed further, an accident may occur in which the precaution lever protruding from the end of the door collides with the frame side and is damaged.

(3) There is a risk of mischievous pulling by pulling the guide lever by hand when the guide lock is unlocked and the door is opened, and the pulled guide lever is slightly rotated. Then, the precaution lever is caught in the front and held in a protruding state, and if the user does not notice this and closes the door, the precaution lever may collide with the frame and be damaged. The present invention is intended to solve such a problem, and can accurately lock regardless of the size of the dust, and also prevents locking of the watch lock while opening the door and prevents mischief of pulling out the watch lever. It is intended to provide a precautionary tablet.

[0011]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in a safety lock of the present invention, a lock case internally provided at a door end and provided with a lever accommodating recess and a pin hole on a front surface of the front, and a rear end loosely fitted in the pin hole. A lock lever having a flat portion formed at one end and a joint pin having a joint pin for engaging a strike on the frame side at the other end, and a guide lever attached in a direction to be housed in the lever housing recess. A biasing lock spring, a hub rotatably fitted in a hub hole provided in the lock case, and a hub provided with a drive lever on the outer surface, and a hub that engages with the drive lever and moves forward and backward toward the front. An intermediate part is pivotally attached to a slider that is provided so that it can be retracted at the unlocking angle of the hub and can be advanced at the locking angle of the concentric locking lock, and the pin provided on the locking case can be used to lock the tip end by the spring. A pair of holder plates that are urged in a direction to clamp the flat surface of the slider, and the rear end of one of the pair of holder plates is connected to the slider via a link. Is configured such that the tip end portion pivots the precaution lever in a direction projecting from the lever accommodating portion via the flat surface portion when is advanced.

In addition, the locking pad of the present invention includes a lock case which is internally provided at an end of a door and is provided with a lever accommodating concave portion and a pin hole on a front surface, and a flat portion which is loosely fitted in the pin hole and is provided at a rear end. With a lock pin formed at one end and a joint pin at the other end that engages a strike on the frame side, and a lock that biases the guide lever in the direction to be housed in the lever housing recess. A spring, a hub rotatably fitted into a hub hole provided in the lock case, and provided with a stopper engaging protrusion on the outer surface, and a hub that moves by rotation of the hub to move the guide lever from the lever accommodating portion. The slider to be projected, the check plate having a stopper engaging hole that is biased in a direction to press the flat surface portion by a ridge, and the stopper engaging portion pivotally attached to the lock case at the unlocking angle. Yo And a stopper that is pushed and pushed to engage with the stopper engaging hole of the check plate.

[0013] Alternatively, the locking pad of the present invention includes a lock case internally provided at a door end and provided with a lever accommodating concave portion, a pin hole and a trigger insertion hole on a front surface of the door, and a lock case after loosely fitting the pin hole. A guide pin having a lock pin with a flat surface at one end and a joint pin for engaging the strike on the frame side at the other end, and a guide lever in the direction in which the guide lever is received in the lever receiving recess. A biasing lock spring, a hub rotatably fitted in a hub hole provided in the lock case, and a hub provided with a drive lever on the outer surface, and a hub that is moved by the drive lever to accommodate the above-mentioned precaution lever in the lever housing. A slider for projecting, a trigger pusher having a trigger bolt inserted in the trigger insertion hole, a spring for biasing the trigger pusher in a direction projecting from the front, and the lock case. A stopper plate pivotally attached to the base, one end of which is engaged with the trigger pusher and the other end of which is formed with a hub locking portion. The hub engaging portion of the plate engages with the drive lever of the hub at the unlocking angle.

[0014]

[Action]

 When the safety lock configured as described above is in the unlocked state, the hub is locked at the unlocking angle by the roller, the slider that engages with the drive lever of the hub retracts, and the slider engages the link through the link. The positions of the tips of the pair of holders connected together are such that they sandwich the flat portion of the precaution lever inserted into the lever accommodating recess. Further, the dead bolt that engages with the drive lever is recessed in the dead insertion hole.

The check plate is located at a position where the flat portion of the lock pin is pushed up, and the stopper pushed by the stopper engaging protrusion of the hub is inserted into the stopper engaging hole of the check plate. It is locked at the position where it is inserted into the lever accommodating recess. Therefore, it is possible to prevent the mischief of pulling out the precaution lever when the precaution lock is unlocked.

When the door is opened in this unlocked state, the stopper plate having the cam groove in which the trigger bolt pushed by the trigger pusher projects from the trigger insertion hole and engages with the cam engagement pin of the trigger pusher, The hub locking part rotates in the direction of locking the hub, and the hub cannot rotate. Therefore, when the door is open, erroneous operation of rotating the hub is prevented.

When the door is closed in such an unlocked state, the trigger bolt pushed to the frame side is retracted into the trigger insertion hole, and the stopper plate rotates due to the retraction of the trigger pusher, so that the hub engaging portion moves from the hub. The separation allows the hub to rotate. When the hub is rotated to the locking lock angle, the slider that engages with the hub moves forward, the movement of the slider is transmitted to the pair of holder plates via the link, and the holder plate rotates about the pin as a fulcrum to move the tip. Since the part moves in the projecting direction of the precaution lever while holding the flat part of the lock pin, the precaution lever rotates and the joint pin projects to the frame side.

If the joint pin hits the frame side during the movement of the tip portions and the tip portions still move, only one holder plate moves and the opening degree of the tip portions of the pair of holder plates increases. However, since the flat part of the above-mentioned lever is pressed in the moving direction toward the tip while the tip of the other holder plate stops moving, the joint pin is engaged with the frame side regardless of the size of the dust. The combined lock is held in the locked state.

When the hub is rotated to the dead lock angle, the dead bolt protrudes and the door is locked while the safety lock is locked. The unlocking operation of the dead bolt and the unlocking operation of the precautionary tablet are the reverse operations of the locking operation described above.

[0020]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of the unlocked state of the safety lock. The lock case 30 has a front opening in FIG. 1, and a cover 31 (a part of which is shown in the upper right part of FIG. 1) is attached to the opening to form a lock case 30. The lock case 30 is internally provided at the end of the door, and the front surface 32 is substantially flush with the end surface of the door.

A check plate guide 33 bent in an angular S shape is fixed to the back surface of the upper part of the front 32, and the pin holes 34 penetrate the front 32 and the check plate guide 33, and A lever accommodating recess 35, which is recessed in a substantially triangular shape, is formed in the front 32, and a dead insertion hole 36 and a trigger insertion hole 37 are formed below the lever accommodating recess 35 (see FIG. 7).

A lock pin 39 provided at one end of the precaution lever 38 is loosely fitted in the pin hole 34. A flange 40 is provided at the rear of the lock pin 39, a flat surface 41 that extends substantially at a right angle from the rear end surface of the flange 40 is extended, and a lock spring 42 is inserted between the flange 40 and the check plate guide 33. To be done. Therefore, the precaution lever 38 is urged in the direction in which the joint pin 43 provided at the other end is accommodated in the lever accommodation recess 35.

A pair of cam holders 44 having mounting legs at both ends of the rectangular plate are fixed to the inner wall surfaces of the lock case 30 and the cover 31 by the mounting legs, and the hub holes 45 are provided in the lock case 30, the cover 31 and the cam holder 44. Through, and both ends of a hub 46 inserted between the pair of cam holders 44 are rotatably fitted into the hub holes 45. A stopper engaging protrusion 47 and a drive lever 48 project from the outer surface of the hub 46, an arc-shaped plate portion 48a is provided on one side surface of the drive lever 48, and a circular engagement protrusion 48b is provided on the other side surface. (See FIG. 8).

A support shaft 49 is erected above the hub 46, and one end of two roller holders 50, 50 bent in a U shape from a plate material is rotatably mounted on the support shaft 49. To be done. A roller 51 is rotatably attached to the opposite end of the roller holder 50, and both ends of a spring 52 wound around a support shaft 49 are locked to the respective roller holders 50. Therefore, the pair of roller holders 50 are urged in such a direction that the distance between the rollers 51 becomes narrower by a predetermined amount.

The hub 46 includes an unlocking angle (see FIG. 1) at which the stopper engaging projection 47 is in pressure contact with the left roller 51, a locking lock angle between the rollers 51 (see FIG. 3), and the right roller. It is locked at a dead lock angle (see FIG. 5) that is pressed against 51. The slider 52, which is inserted into the lock case 30 and is capable of moving forward and backward in the direction of the front 32, is provided with a protrusion 53 and a shaft 54 on its side surface. The protrusion 53 has an arc shape of the drive lever 48. A pushed surface 53a that is pushed by the plate portion 48a and a slope 53b that allows passage of the arc-shaped plate portion 48a are provided (see FIG. 3).

An intermediate portion of the first link 56 is rotatably inserted into a shaft 55 provided upright in the lock case 30, and the shaft 54 is inserted into a long hole 57 provided at one end of the first link 56. It Above the first link, a pair of holder plates 59 are rotatably inserted into pins 58 provided upright on the lock case 30. The pair of holder plates 59 includes a holder plate 59a having a long length in which an intermediate portion is inserted into the pin 58 and a holder plate 59b having a short length in which a rear end portion is inserted into the pin 58. The spring 60, which is wound around and has its both ends pressed against the inner surfaces of the holder plates 59a and 59b, urges the tip end thereof in a direction to sandwich the flat surface portion 41.

Both ends of the second link 63 are connected to a shaft 61 provided at the rear end of the longer holder plate 59a and a shaft 62 provided at the other end of the first link 56 (see FIG. See 3). Therefore, when the slider 52 moves forward in the direction of the front 32, the first link 56 rotates clockwise about the shaft 55 as a fulcrum, and the second link 63 pushed by the first link 56 has the longer holder plate 59a. Push up on the rear end.

In the dead bolt 64 inserted into the dead insertion hole 36, a recess 67 that engages with the drive lever 48 is formed between a protrusion 65 protruding in the center of the upper surface and a protrusion 66 protruding in the rear of the upper surface. (See FIG. 3). The shaft portions 68 projecting to both side surfaces of the dead bolt 64 are inserted into the horizontally long holes 69 provided in the lock case 30 and the cover 31 (see FIG. 8), and the dead bolt 64 is projected and retracted from the dead insertion hole 36. Be guided.

A spring 79 is stretched around a spring locking projection 78 protruding from the side surface of the dead bolt 64 and a rear wall of the lock case 30, and the dead bolt 64 is urged in the retracted direction (see FIG. 3). When the hub 46 is at the dead locking angle shown in FIG. 5, the protrusion 65 of the drive lever 48 is pushed to push the dead insertion hole 36 into the dead insertion hole 36. It projects from 36.

In the check plate guide 33, the check plate 70 is inserted into a hole penetrating the upper wall 33a and the lower wall 33b. The check plate 70 is provided with a spring engagement hole 71 and a stopper engagement hole 72, and a stopper 73 is pivotally attached to the shaft 55 and a spring 74 is wound (see FIG. 3).

One end 74 a of the spring 74 penetrates a hole 75 provided in the check plate guide 33 and is locked in the spring locking hole 71 of the check plate 70, and the other end 74 b is provided in the stopper 73. It is locked to the receiver 76. Therefore, the check plate 70 is biased in the direction in which the upper end portion is pressed against the flat portion 41 of the lock pin 39, and the stopper 73 is biased counterclockwise about the shaft 55 (see FIG. 3).

The stopper 73 is provided with an engagement protrusion 77 that protrudes toward the check plate 70, and when the stopper 73 is pushed in the clockwise direction, the check plate 70 at the position where the flat portion 41 is pushed up is provided. The engagement protrusion 77 is engaged with the stopper engagement hole 72 to prevent the check plate 70 in the raised position from being lowered.

The trigger pusher 80 inserted into the lowermost portion of the lock case 30 has a rectangular cross-section, is provided with a bottomed hole 81 that opens at the rear end, and has elongated holes 82 that open on both sides. A plate-shaped portion 83 is provided and extends at the tip, and a cam engaging pin 85 is attached to a protrusion 84 provided on the upper surface (see FIGS. 4 and 9). A shaft 86 erected on the lock case 30 is inserted into the elongated hole 82, and a spring 87 is inserted between the shaft 86 and the bottom of the bottomed hole 81 (see FIG. 4). Therefore, the trigger pusher 80 is biased toward the front 32.

The tip of the plate-like portion 83 and the front 32 pinch two protrusions 89 provided in the middle portion of the trigger bolt 88 formed in the rhombus outline, and the trigger bolt 88 is shown in FIG. As shown, the tip projects from the front 32. The shaft 86 has a substantially L-shaped contour, and a stopper plate 90 having a U-shaped cross section has a central portion rotatably inserted therein, and a cam groove 91 provided at one end of the stopper plate 90. The cam engagement pin 85 is inserted into the stopper plate 90, and a concave hub engaging portion 92 is provided at the other end of the stopper plate 90 (see FIGS. 3 and 4).

Next, the operation of the locking lock configured as described above will be described in the order of the unlocked state, locking of the locking lock, and locking of the dead bolt. When the safety lock is in the unlocked state, as shown in FIG. 1, the hub 46 has the stopper engaging projection 47 tilted to the left by approximately 45 ° and abuts the left roller 51, and the drive lever 48 moves to the right. The unlocking angle is approximately 45 °.

Since the engaging portion (not shown) of the slider 52 is engaged with the drive lever 48, the slider 52 is retracted to a position away from the front 32, and the shaft 54 of the slider 52 has the elongated hole 57 engaged with the first link 57. 56 rotates counterclockwise about the shaft 55 as a fulcrum, the second link 63 is in a position pulled by the shaft 62 of the first link 56, and the tip end portion of the holder plate 59a fits in the lever accommodating recess 35. The flat portion 41 of the lock pin 39 of the contained precaution lever 38 is held.

The dead bolt 64 is recessed in the dead insertion hole 36, and the check plate 70 is in the raised position where the flat portion 41 of the lock pin 39 is pushed up, and the stopper 73 is pushed by the stopper engaging projection 47 of the hub 46. Therefore, the engaging projection 77 is engaged with the stopper engaging hole 72 of the check plate 70. Therefore, the check plate 70 cannot be lowered, and the mischief of pulling out the precaution lever 38 with the flat portion 41 being pushed up from the lever accommodating recess 35 is prevented.

When the door is opened in this unlocked state, the two protrusions 89 of the trigger bolt 88 are clamped between the trigger pusher 80 and the front 32, so that the tip of the trigger bolt 88 is above the front 32 surface. It stands up and projects (see Fig. 2). Since the cam engagement pin 85 of the trigger pusher 80 is at the left end of the cam groove 91, the stopper plate 90 is in a position rotated counterclockwise about the shaft 86 as a fulcrum, and the hub engaging portion 92 engages with the hub 46. It is engaged with the protrusion 48b. Therefore, an erroneous operation of locking the watch lock or locking the dead bolt 64 during the opening of the door is prevented.

When the door is closed in such an unlocked state, the trigger bolt 88 pushed toward the frame G moves backward while tilting (see FIG. 4), and the trigger pusher 80 pushed by the trigger bolt 88 resists the spring 87. Then, the stopper plate 90 having the cam groove 91 that engages with the cam engagement pin 85 of the trigger pusher 80 rotates clockwise about the shaft 86 as a fulcrum, and the hub engaging portion 92 engages with the hub 46. Since it is separated from the protrusion 48b, the hub 46 released from the restraint of the stopper plate 90 can rotate (see FIG. 3).

The thumb-turn on the indoor side or the cylinder lock on the outdoor side is unlocked with a key to rotate the hub 46 clockwise by about 45 °, and the stopper engagement projection 57 is inserted between both rollers 51. It is locked at the locking angle (see Fig. 3). By the rotation of the hub 46, the tip of the arc-shaped plate portion 48a pushes the pushed surface 53a of the projection 53 of the slider 52, and the slider 52 advances in the direction of the front 32. Then, when the tip of the arc-shaped plate portion 48a overlaps the slope 53b, the slider 52 stops.

The forward movement of the slider 52 causes the first link 56 having the elongated hole 57 that engages with the shaft 54 to rotate clockwise about the shaft 55 as a fulcrum, and the shaft 62 of the first link 56 to move to the second link. Since 63 is pushed up, the longer holder plate 59a rotates counterclockwise about the shaft 58 as a fulcrum, and the shorter holder plate 59 also rotates in the same direction via the spring 60. The flat portion 41 sandwiched between is pushed down.

The guide lever 38 projects from the lever accommodating recess 35, the joint pin 43 is inserted into a hole (not shown) provided in the strike on the frame side G, and the guide lock is locked. On the other hand, since the stopper engaging projection of the hub 46 is raised, the stopper 73 rotates counterclockwise and the engaging projection 77 is disengaged from the stopper engaging hole 72, so that the check plate 70 can be lowered. Become.

When the clearance (the size of dust) between the frame side G and the front 32 is small, the precaution lever 38 contacts the strike on the frame side G while the precaution lever 38 rotates, but the longer holder plate 59a. Even if is rotated further in the counterclockwise direction, the shorter holder plate 59 is stopped while being in pressure contact with the flat surface portion 41, so that an unreasonable force is not applied to the caution lever 38.

That is, since the shortage of the dust size is adjusted by elastically deforming the spring 60 and widening the distance between the tip portions of the pair of holder plates 59, the precaution is applied to a door having a large dust size. So constructed, this precaution can be used with both large and small dust sizes.

When the door is opened in such a locked state of the concentric lock, the joint pin 43 ascends the vertically elongated hole (not shown) communicating with the strike hole on the frame side G in accordance with the amount of the door opening, and the concentric lever 38 is opened. Rotates about the lock pin 39 as a fulcrum. When the joint pin 43 reaches the upper end of the vertically elongated hole, the door is slightly opened, and further opening of the door is prevented, as is the case with the conventional caution pad.

When the precaution lever 38 is rotated, the check plate 70, which comes into pressure contact with the flat portion 4 of the lock pin 39, descends and engages with the hole (not shown) in the upper wall of the slider 52, and the slider 52 moves. Since it becomes impossible, the hub 46 cannot be rotated. Therefore, when the door is slightly opened, it is possible to prevent an incorrect operation of turning the thumb turn by inserting a hand from the outside.

When the door is closed, the lock pin 39 returns to the original angle, and the check plate 70 that comes into pressure contact with the flat surface portion 41 returns to the raised position again, so that the slider 52 becomes movable and the body lock. Unlocking operation and dead locking operation are possible. When the hub 46, which is at the locking lock angle, is rotated about 45 ° clockwise to the dead locking angle, the drive lever 48 pushes the projection 65 of the dead bolt 64 toward the front 32, and the dead bolt 64 is inserted dead. The door is locked by the dead bolt 64 while protruding from the hole 36 and the precautionary lock remains locked (see FIG. 3).

In the locked state of the dead bolt 64, the stopper engaging projection 47 is pressed against the right roller 51. The deadbolt unlocking operation and the baillock unlocking operation are the opposite operations of the above-described locking operation, and the hub 48 is rotated counterclockwise by 45 ° to return to the precautionary state shown in FIG. Further, when the hub 48 is further rotated counterclockwise by 45 °, it returns to the unlocked state shown in FIG.

[0049]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. (1) Since this twin lock can be used for both large and small dust size doors, we manufacture and stock various locks according to each dust size as before. I no longer need it. In addition, it is possible to prevent the trouble that the concentric tablet transported to the site does not fit into the door and the accident that the concentric tablet is damaged due to improper dust size.

(2) It is possible to prevent an erroneous operation of locking the watch lock while the door is open, and also, when the watch lock is unlocked and opened, it is necessary to pull the watch lever by hand to pull it out. It came to be prevented.

[Brief description of drawings]

FIG. 1 is a front view showing a case where a cover is removed from a safety lock in an unlocked state and an opened state.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a front view of the tablet lock in the locked state when the cover is removed.

FIG. 4 is a sectional view taken along line YY of FIG.

FIG. 5 is a front view of the guard lock in a dead bolt locked state in which the cover is removed.

6 is a sectional view taken along line ZZ in FIG.

FIG. 7 is a view on arrow W of FIG.

FIG. 8 is a side view showing the periphery of the hub.

FIG. 9 is a front view of a trigger pusher.

FIG. 10 is a front view showing a case where the cover of the conventional padlock is removed.

[Explanation of symbols]

 30 lock case 31 cover 32 front 33 check plate guide 35 lever accommodating recess 36 dead insertion hole 37 trigger insertion hole 38 guide lever 39 lock pin 41 flat surface 42 lock spring 43 joint pin 46 hub 47 stopper engagement protrusion 48 drive lever 48b engagement Joint protrusion 51 Roller 52 Slider 56 First link 59 Holder plate 60 Spring 63 Second link 64 Dead bolt 70 Check plate 71 Spring locking hole 72 Stopper locking hole 73 Stopper 74 Spring 77 Engagement projection 80 Trigger pusher 85 Cam engagement Pin 88 Trigger bolt 90 Stopper plate 91 Cam groove

Claims (3)

[Scope of utility model registration request] 1. A lock case internally provided at an end of a door and provided with a lever accommodating recess and a pin hole on a front surface of the front surface, and a lock pin having a flat surface portion at a rear end loosely fitted in the pin hole. And a lock lever for urging the guard lever in a direction to be housed in the lever housing recess, and a lock pin provided in the lock case. A hub that is rotatably fitted into the hub hole and that has a drive lever provided on the outer surface; and a hub that engages with the drive lever and is capable of advancing and retracting toward the front and retracts at the unlocking angle of the hub. An intermediate portion is pivotally attached to the slider provided to advance at the padlock locking angle and a pin provided on the lock case, and a pair of wheels are urged by springs in a direction to clamp the flat portion of the lock pin. A holder plate, and a rear end portion of one of the pair of holder plates is connected to the slider via a link, and when the slider moves forward, the tip portion passes through the flat surface portion. A guide lock characterized in that the guide lever is rotated in a direction projecting from the lever accommodating portion. 2. A lock case internally provided at an end of a door and provided with a lever accommodating concave portion and a pin hole on a front surface of the front face, and a lock pin having a flat portion formed at a rear end loosely fitted in the pin hole. And a lock lever for urging the guard lever in a direction to be housed in the lever housing recess, and a lock pin provided in the lock case. A hub that is rotatably fitted in the formed hub hole and has a stopper engaging projection on the outer surface thereof; a slider that moves by the rotation of the hub to project the guide lever from the lever accommodating portion; The check plate is urged in the direction of pressing the flat surface and is pivotally attached to the check plate having the stopper engaging hole and the lock case, and is pushed by the stopper engaging portion at the unlocking angle, and the check plate is pressed. And a stopper that engages with the stopper engagement hole of the seat. 3. A lock case which is internally provided at an end of a door and has a lever accommodating recess, a pin hole and a trigger insertion hole provided in a front surface of the door, and a flat surface portion which is loosely fitted in the pin hole and is formed at a rear end. A lock lever provided with a lock pin at one end and a joint pin at the other end for engaging with a strike on the frame side; a lock spring biasing the guide lever in a direction to be stored in the lever receiving recess; A hub rotatably fitted in a hub hole provided in the lock case and provided with a drive lever on the outer surface, a slider that is moved by the drive lever to project the precaution lever into the lever accommodating portion, and the trigger insertion hole. A trigger pusher having a trigger bolt that is inserted into the lock case, a spring that urges the trigger pusher in a direction projecting from the front, and one end that is pivotally attached to the lock case and has one end. A stopper plate that engages with the washer and has a hub locking portion formed at the other end, and when the trigger bolt is in a position projecting from the front, the hub locking portion of the stopper plate has an unlocking angle. A lockout adapted to engage a drive lever of the hub.