KR100528841B1 - Latch device for handle for opening and closing door - Google Patents

Abstract

(Problem) Provides a latch device for the door opening and closing handle that can be easily switched between the auto lock mode and the manual lock mode by the presence or absence of a single part called the use mode setting body.

(Remedy) According to the selected use mode, the use mode setting body 9 is attached to the rear base end 8 of the hook lever 3, and the hook lever 3 is rotated to the upright position in the auto lock mode. When the cam lever 11 is rotated in the front direction by pressing the set mode set body 9, the hook lever 3 is rotated to the upright position in the manual lock mode. When the nose face 13, which is not pressed against the proximal end 8, is attached to the cam lever 11, and the hook lever 3 is rotated to the lying position in the auto lock mode and the manual lock mode, the lock lever The lock lever 16 is held in a posture so that the distal end of the 16 enters the rotational trajectory of the rear base end 8 of the hook lever 3.

Description

Latch device of steering wheel for door opening and shutting {LATCH DEVICE FOR HANDLE FOR OPENING AND CLOSING DOOR}

The present invention is a latch device used for a handle for opening and closing a door such as a cargo box of a cargo truck or a container for transportation.

In this kind of cargo box, the left and right doors of the doors are mounted on the sides of the cargo box by hinges, and the lock shaft is rotatably inserted into the upper and lower brackets fixed to the doors. The lock cam is installed at the top, the cam keeper is installed at the upper and lower frames of the cargo box, the handle for opening and closing the door is connected to the lock shaft by the horizontal pivot shaft, and the lock shaft is properly rotated by the door opening and closing handle. By engaging the cam to the cam keeper, the door is locked to the cargo box.

The handle for opening and closing the door needs to be locked to the door by a latching device so that a driver or the like cannot operate it by a person other than a party authorized to prevent theft of the load. A conventional latch device for a handle for opening and closing a door, which is proposed to comply with this request, can be pivotally mounted freely so that the middle part of the hook lever inserted into the division groove of the main body can be erected or laid on the main body by a horizontal pivot axis. And a transverse groove portion in which the handle for opening and closing the door is caught or peeled off at the upper end of the hook lever, corresponding to the position of the force point between the main body and the hook lever, and rotating and pressing in the direction in which the hook lever is lying down or in an upright position. The 1st dead point spring mechanism is installed.

And a second dead point spring mechanism for pivotally mounting the stopper lever to the main body by another horizontal pivot axis, corresponding to the position of the operating force point between the main body and the stopper lever, and rotating the stopper lever in the front direction or the rear direction. With the hook lever lying down, the stopper lever is rotated in the rearward direction by the second dead point spring mechanism, the lock fixing arm of the stopper lever is engaged with the projection of the lower end of the hook lever, and the lock Secure the cam disk to the rotor, install the cam projection on the cam disk that rotates the stopper lever in the front direction, and engage the stopper lever's interlocking arm with the bottom projection of the hook lever, and press the cam disk back by spring. (For example, refer patent document 1).

By locking the hook lever in the lying position through the cam disk secured to the rotor of the lock, the handle for opening and closing the door penetrates along the upper front part of the main body, and the manual part of the hook lever in the upright position When it hits, a series of corrective operations immediately proceed, and the lock is automatically established. Therefore, press the front end of the hook lever to rotate it so that the hook lever is raised and insert the key into the rotor of the lock to take out the handle for opening and closing the door. It is necessary to turn the cam disk, drive the stopper lever in the unlocked direction, and release the hook restraint. (Hereafter, the hook lever rotates so that the hook lever is lying down by hitting the handle to open and close the hook lever. The operating mode in which visibility is automatically established is called "auto lock mode."

When all cargo loading and unloading work in one place is completed and the cargo truck is moved to the next loading and unloading place, the hook lever is corrected in earnest from the viewpoint of preventing the accidental opening of the door while driving. The auto lock mode to be used is an optimal use mode.

However, in a certain place, if the load is repeatedly piled up and lowered for a short time and the driver returns immediately to the place of the cargo truck, the auto lock mode that requires the use of a key every time the door is opened or closed is considered in terms of workability. Some users are uncomfortable because of lack of flexibility.

Such a user can rotate the hook lever to stand up by pressing the front proximal end during repeated stacking and unloading of the load several times within a short time, and after the stacking and unloading of the last load is finished, the hook lever is used by using a key. It is enough if it can correct in earnest (Hereafter, the hook lever is only hit by the door opening / closing handle, and the hook lever is rotated to lie down. Lock mode ”.

As described above, the demand for the use mode of the clasp device may be different by the user.However, as a maker, it is quite complicated to manufacture two kinds of clasp devices having different configurations and corresponding to different use modes, and it is difficult to increase the mass production effect. Cost savings of clasps are hampered and inventory management and inventory burdens are increasing.

(Patent Document 1) Japanese Patent Application Laid-Open No. 8-16419

Accordingly, an object of the present invention is to determine whether or not a single component called a use mode setting body is installed in a step of shipping from a factory, delivering to a user, or installing a product in a box. It is to provide a latch mechanism for the door opening and closing handle that can be easily switched to manual lock mode.

In the latch device for the handle for opening and closing the door according to the present invention, the intermediate portion of the hook lever 3 inserted into the divided groove 2 of the main body 1 is mounted on the main body 1 by the first horizontal pivot shaft 4. It is pivotally mounted so that it can be laid or laid down, and a transverse groove portion 6, on which the handle 5 for opening and closing the door is caught or peeled, is installed at the rear end of the hook lever 3, between the body 1 and the hook lever 3; The first dead point spring mechanism 7 corresponding to the position of the acting force point and rotationally pressing in the direction in which the hook lever 3 is laid down or in the upright direction is provided.

According to the selected use mode, the use mode setting body 9 is detached from the rear base end 8 of the hook lever 3, and the cam lever 11 is pivoted to the main body 1 by the second horizontal pivot shaft 10. A second dead point spring mechanism 12 is installed between the main body 1 and the cam lever 11 so as to correspond to the position of the operating force point and to rotate and press the cam lever 11 in the front direction or the rear direction.

When the hook lever 3 is inclined to the upright position in the auto lock mode, the cam lever 11 is rotated to the front direction by pressing with the use mode setting body 9, and the hook lever 3 in the manual lock mode. The first dead point spring mechanism (7) than the second horizontal pivot shaft (10) to the nose surface (13) which is not pressed by the rear base end (8) of the hook lever (3) when it is inclined to the upright position. It is attached to the cam lever 11 in the site | part on the side, and the site | part of the 1st manual cam part 14 and the 2nd manual cam part 15 on the side of the 2nd dead point spring mechanism 12 rather than the 2nd horizontal pivot shaft 10 is carried out. To the cam lever (11).

The lock lever 16 disposed on the front side of the cam lever 11 is pivotally mounted on the main body 1 by the second horizontal pivot shaft 10, and the hook lever 3 is opened in the auto lock mode and the manual lock mode. When rotating to the lying position, the posture holding spring member 17 which presses the lock lever 16 in such a way that the leading end of the lock lever 16 enters the rotational trajectory of the rear base end 8 of the hook lever 3. It is installed between the cam lever 11 and the lock lever 16.

When the lock 18 is attached to the main body 1, the operation plate 20 is fixed to the rotor 19 of the lock 18, and the cam lever is rotated in a specific direction in the auto lock mode. A first drive cam portion 21 for pressing the first manual cam portion 14 of (11) and tilting the cam lever 11 in the back direction is provided at one end of the operation plate 20, and in the manual lock mode. When the rotor 19 is rotated in the opposite direction to the specific direction, the second drive cam portion 22 for pressing the second manual cam portion 15 of the cam lever 11 to incline the cam lever 11 in the rear direction. ) Is attached to the other end of the operation plate 20.

Then, when the finger is released from the key 24 inserted into the key hole 23 of the rotor 19, and the key 24 is released, the first drive cam portion 21 of the operation plate 20 is the cam lever ( Returning from the first manual cam portion 14 of the 11, and the second driving cam portion 22 of the operation plate 20 is separated from the second manual cam portion 15 of the cam lever 11, the return spring member ( The rotor 19 is rotated by 25).

(Action of invention)

When the auto lock mode is set, the use mode setting body 9 is attached to the rear lower end portion 8 of the hook lever 3. 1, 5 and 12, when the door 26 of the cargo box is closed, and the door opening and closing handle 5 is engaged with the transverse groove 6 of the hook lever 3, The elastic repulsive force of the first dead point spring mechanism 7 acts as a force for rotating the hook lever 3 in the counterclockwise direction about the first horizontal pivot axis 4 in FIG. The tip 3a of the hook lever 3 in the position strikes the front face 1a of the main body 1.

The elastic repulsive force of the second dead point spring mechanism 12 acts as a force to rotate the cam lever 11 in the counterclockwise direction about the second horizontal pivot axis 10 in FIG. 12, and the cam lever ( 11) is maintained at a position inclinedly rotated on the front side.

When the cam lever 11 is in the inclined position in the front direction, the lock lever 16 is inclined upwardly inclined about the second horizontal pivot shaft 10, and the front end portion of the lock lever 16 ( 16a) is located on the rotation trajectory of the back base end 8 of the hook lever 3. Therefore, when trying to rotate the hook lever 3 clockwise about the first horizontal pivot shaft 4 in FIG. 12, the use mode setting body 9 immediately ends the end portion 16a of the lock lever 16. ), The hook lever 3 cannot rotate sufficiently in the same direction, that is, in the release direction.

When the cargo truck arrives at a predetermined place and loads and unloads the load, the predetermined key 24 is inserted into the key hole 23 of the lock 18, and the elastic repulsive force of the return spring member 25 Against the force of the two dead point mechanism 12, the rotor 19 is rotated in the counterclockwise direction in Fig. 6, the cam lever 11 by the first drive cam portion 21 of the operation plate 20 Press the first manual cam portion (14).

By this pressing operation, the cam lever 11 is rotated in the clockwise direction in FIG. 12 about the second horizontal pivot shaft 10, and the cam lever 11 is inclinedly rotated in the rear direction as shown in FIG. Reach a location

Since the direction of action of the second dead point spring mechanism 12 is reversed during the rotation, the cam lever 11 is held at the rotation end position.

In this state, the front end portion 16a of the lock lever 16 moves outward of the rotational trajectory of the rear base end 8 of the hook lever 3, so that the rotational restraint of the hook lever 3 is released.

Then, the front proximal end 3b of the hook lever 3 is pressed against the force of the first dead point spring mechanism 7, and the hook lever 3 is pushed against the first horizontal pivot shaft 4 in FIG. 13. Rotate clockwise to the center.

In the middle of this rotation, the direction of action of the first dead point spring mechanism 7 is reversed, and the hook lever 3 is inclinedly rotated to an upright position as shown in FIG. Release the constraints.

By rotating the door opening / closing handle 5 drawn out from the main body 1 in a specific direction, the lock shaft is rotated to the unlocked side, and the lock cam escapes from the cam keeper, The lock is released and the door 26 is opened by pulling the door opening and closing handle 26 forward.

After the stacking and lowering work of the load is completed, the door 26 is closed, the door opening and closing handle 5 is rotated to the opposite side to the specific direction, the lock shaft is rotated to the visibility side, the lock cam is the cam In engagement with the keeper, the door 26 is locked to the cargo box.

After that, the door opening and closing handle 5 is inserted into the main body 1 to cross the hook lever 3.

The side surface 5a of the handle 5 for door opening and closing hits the passive part comprised in the inner surface 6a of the groove part 6. Therefore, the hook lever 3 rotates in the counterclockwise rotation direction in FIG. 14 about the first horizontal pivot axis 4 against the force of the first dead point spring mechanism 7, and is shown in FIG. 12. Return to the laid down position.

The direction of action of the first dead point spring mechanism 7 is reversed during this rotation. In the process of rotating the hook lever 3 to the lying down position, since the side portion 16b of the lock lever 16 is pressed by the proximal end 3c of the hook lever 3, the lock lever 16 is removed. 2 It retracts and rotates by an angle in the clockwise direction about FIG. 14 about the horizontal pivot axis 10, and allows the passage of the hook lever 3 to pass.

In the terminal stage in which the hook lever 3 is rotated back to the lying position in FIG. 12, the use mode setting body 9 of the rear proximal end 8 of the hook lever 3 is the nose portion 13 of the cam lever 11. Press).

By this pressing operation, the cam lever 11 rotates counterclockwise in FIG. 14 about the second horizontal pivot shaft 10, and reaches a position inclinedly rotated in the front direction as shown in FIG. do.

As a result, one cycle of the auto lock mode is completed, and the hook lever 3 is automatically corrected in earnest without the need to rotate the rotor 19 to the visibility side with the key 24.

When the manual lock mode is set, the use mode setting body 9 is not attached to the rear lower end 8 of the hook lever 3 as shown in Figs. 15, 16, and 17.

When the door 26 of the box is closed and the handle 5 for opening and closing the door is engaged with the transverse groove 6 of the hook lever 3, the elastic repulsive force of the first dead point spring mechanism 7 becomes 15, the tip 3a of the hook lever 3, which acts as a force for rotationally pressing the hook lever 3 counterclockwise about the first horizontal pivot shaft 4, is in a lying down position. Hits the front face 1a of the main body 1.

The elastic repulsive force of the second dead point spring mechanism 12 acts as a force for rotating the cam lever 11 in the counterclockwise direction about the second horizontal pivot axis 10 in FIG. 15, and the cam lever ( 11) is maintained at a position inclinedly rotated on the front side.

When the cam lever 11 is in the inclined position in the front direction as described above, the lock lever 16 is inclined upwardly with respect to the second horizontal pivot axis 10, and the lock lever 16 The tip end portion 16a is positioned on the rotational trajectory of the rear base end 8 of the hook lever 3 at a predetermined distance from the rear base end 8. Therefore, when the hook lever 3 is rotated in the clockwise direction in FIG. 15 about the first horizontal pivot shaft 4, the rear proximal end 8 is the front end of the lock lever 16 at a predetermined angle rotated step. In contact with 16a, the hook lever 3 cannot rotate sufficiently in the unlocking direction.

When the cargo truck arrives at a predetermined place and starts to load and unload the load, the predetermined key 24 is inserted into the key hole 23 of the lock 18, and the elastic repulsive force of the return spring member 25 In response to the force of the second dead point mechanism 12, the rotor 19 is rotated in the counterclockwise direction in FIG. 6, and the cam lever 11 is driven by the first drive cam portion 21 of the operation plate 20. FIG. Press the first manual cam section 14).

The cam lever 11 rotates clockwise in FIG. 15 about the second horizontal pivot shaft 10 by this pressing operation, and the cam lever 11 is inclinedly rotated in the back direction as shown in FIG. Reach a location

Since the direction of action of the second dead point spring mechanism 12 is reversed during the rotation, the cam lever 11 is maintained at the position of the rotation end. In this state, since the tip end portion 16a of the lock lever 16 moves outside the rotational trajectory of the rear base end portion 8 of the hook lever 3, the rotational restraint of the hook lever 3 is released.

Then, the front proximal end 3b of the hook lever 3 is removed from the first dead point spring mechanism 7.

Pressing against this force, the hook lever 3 is rotated clockwise about the first horizontal pivot axis 4 in FIG.

In the middle of the rotation, the direction of action of the first dead point spring mechanism 7 is reversed, the hook lever 3 is inclinedly rotated to a erected position as shown in Fig. 17, and the door opening and closing handle 5 Release the constraints.

By rotating the door opening / closing handle 5 drawn out from the main body 1 in a specific direction, the lock shaft is rotated to the unlocked side, and the lock cam escapes from the cam keeper, The lock is released and the door 26 is opened by pulling the door opening and closing handle 26 in front.

After the stacking and unloading operation of the load is finished, the door 26 is closed to prevent theft of the load, the door opening and closing handle 5 is rotated to the opposite side to the specific direction, and the lock cam is moved to the visibility side. The lock cam is engaged with the cam keeper, and the door 26 is locked to the cargo box.

Then, when the handle 5 for opening and closing the door is inserted into the main body 1, the side surface of the handle 5 for opening and closing the door 5 is formed in the passive part formed in the inner surface 6a of the transverse groove 6 of the hook lever 3. 5a) bumps into Therefore, the hook lever 3 rotates in the counterclockwise rotation direction in FIG. 17 about the first horizontal pivot axis 4 against the force of the first dead point spring mechanism 7, and is shown in FIG. 16. Return to the laid down position. The direction of action of the first dead point spring mechanism 7 is reversed during this rotation.

In the process of rotating the hook lever 3 to the lying position, the side portion 16b of the lock lever 16 is not pressed by the base end surface 3c of the hook lever 3, and the hook lever 3 Since the rear proximal end 8 does not press the nose portion 13 of the cam lever 11, the cam lever 11 is not related to the rotation of the hook lever 3 and does not rotate at all.

Therefore, at the start of the next stacking operation, it is not necessary to insert and rotate the key 24, and by pressing the front base end 3b as described above, the hook lever 3 immediately inclines to the upright position. It rotates and the handle 5 for door opening and closing can be taken out from the main body 1. As shown in FIG.

In subsequent stacking and unloading operations, it is not necessary to use the key 24 as well.

When the final stage of the manual lock mode, that is, completing all the stacking and unloading operations in the same place and moving the cargo truck to the next stacking and unloading place, a predetermined key is inserted into the keyhole 23 of the lock 18. (24) is inserted, and the rotor 19 is rotated clockwise in FIG. 6 against the elastic repulsion force of the return spring member 25 and the force of the second dead point mechanism 12, and the operation plate The second manual cam portion 15 of the cam lever 11 is pushed by the second drive cam portion 22 of 20.

By this pressing operation, the cam lever 11 is rotated in the counterclockwise direction in FIG. 16 about the second horizontal pivot shaft 10, and the cam lever 11 is inclined in the front direction as shown in FIG. Reach the rotated position.

Since the acting direction of the second dead point spring mechanism 12 is reversed during the rotation, the cam lever 11 is maintained at the position of the rotation end.

Thereby, the hook lever 3 is corrected with respect to the main body 1, and one cycle of the manual lock mode is completed.

(Embodiment of invention)

In the example of illustration, the attachment hole 27 of the main body 1 with respect to the door 26 is open in the back side of the main body 1, and the main body 1 is the door 26 through the packing 28. As shown in FIG. ) Is fixed by a fastening bolt (not shown) from the back side. Therefore, when the door 26 is closed and locked, the corresponding fastening bolts cannot be accessed, and the removal of the latch device by the unauthorized authority from the outside of the cargo box is impossible. In addition, the first horizontal pivot shaft 4 of the hook lever 3 and the second horizontal pivot shaft 10 of the cam lever 11 and the lock lever 16 are exposed to the outer surface portion of the main body 1. Not. This improves the security of the latch device.

The main part of the main body 1 is made of aluminum die-cast, and the apron portion 29 of the main body 1 which is in sliding contact when the door opening / closing handle 5 enters and exits is made of a metal material such as stainless steel which is excellent in impact resistance and wear resistance. It is formed of and improves the contents of the latch device. The apron portion 29 is joined to the main portion of the main body 1 by a fastening screw 31 passing through the transmission hole 30. The attachment hole 27 of the apron portion 29 is in a concealed position behind the door opening and closing handle 5. Therefore, in the locked state, the fasteners inserted into the attachment holes 27 cannot be accessed.

In the embodiment shown in Figs. 1 to 17, the main body 1 has a cap 32 for concealing the front portion of the lock 18 pivotally mounted at the upper end by a horizontal pivot shaft 33, for dustproof and waterproof measures. This is done. The cap 32 is rotationally pressurized in the closing direction by a torsion coil spring 34 fitted to the horizontal pivot shaft 33, and the fixing stopper 35 made of rubber or soft plastic on the rear surface of the lower end of the cap 32, It is adapted to elastically engage the seating hole 36 on the main body 1 side at the time of closing. As a result, the cap 32 comes into close contact with the main body 1 to improve dust and water resistance.

The main body 1 has a U-shape so as to correspond to the lower half of the cross groove 6 of the hook lever 3.

The receiving groove 59 is formed, and the external force is distributed to the handle 5 for opening and closing the door.

The first dead point spring mechanism 7 is inserted into the rear opening of the main body 1, and the base plate 38 fixed by the fastening screw 37 and the transverse fixed to the rear opening of the hook lever 3 are fixed. A spring guide plate in which the shaft 39 and the base receiving groove 41 are fitted to the branch plate portion 42 of the base plate 38, and the tip receiving groove 43 is fitted to the transverse shaft 39. 40 and a compression coil spring 44 fitted to the spring guide plate 40 and compressed between the base plate 38 and the enlarged head of the spring guide plate 40.

The second dead point spring mechanism 12 includes a support plate 45 which is press-fitted to the rear opening of the main body 1, a downward arm 46 of the cam lever 11, and a support hole of the support plate 45. The base end portion is inserted into the 47, the front end portion is fitted to the spring guide plate 49 and the spring guide plate 49 connected to the downward arm 46 by the horizontal pivot shaft 48, 45 and a compression coil spring 50 compressed between the enlarged head of the spring guide plate 49.

The second manual cam portion 15 of the cam lever 11 is bent to the front end side of the lower arm 46. For this reason, the second manual cam portion 15 of the cam lever 11 is located farther from the second horizontal pivot shaft 10 than the first manual cam portion 14.

The use mode setting body 9 is comprised by the screw, and the screw shaft part is twisted in the screw hole 51 of the back base end part 8 of the hook lever 3. As shown in FIG.

The posture maintenance spring 17 of the lock lever 16 is comprised by the torsion coil spring, and the coil part is fitted to the 2nd horizontal pivot shaft 10. As shown in FIG. The lock lever 16 is such that the proximal shoulder portion 52 abuts the root portion of the nose portion 13 of the cam lever 11.

The return spring member 25 of the operation plate 20 is comprised by the torsion coil spring, and the coil part is fitted to the outer side of the rotor 19. As shown in FIG.

As the lock 18, a well-known cylinder lock is used, and the outer cylinder 53 of the lock 18 has a front side in the receiving hole 54 of the front wall of the main body 1 and the receiving hole 55 of the support plate 45. It is inserted into the main body 1 by inserting the clip board 56 made from the spring into the main surface groove 57 of the outer cylinder 53. As shown in FIG. The operation plate 20 is fitted to the rotor 19 in a non-rotating manner relative to each shaft portion, and is fixed to the rotor 19 by an E ring 58 so as not to be detachably attached. The first drive cam portion 21 and the second drive cam portion 22 are bent at each end of the operation plate 20. The cap 32 may be omitted as shown in FIGS. 18 and 19.

The latch device of the present invention configured as described above can be used for the auto lock mode and the manual lock mode according to the user's selection. The use mode setting body 9 is connected to the hook lever 3 to switch the use mode. This is extremely simple depending on whether or not it is mounted on the back proximal end 8.

It is not necessary to separately manufacture the latch device for the auto lock mode and the latch device for the manual mode separately, and it is sufficient to produce and install only one type of the common latch device with the use mode setting body 9 as an optional part. Production cost can be reduced by mass production effect.

It is good to store one kind, so that the stock storage space can be saved, and the trouble of o-delivery and the exchange is eliminated, and the stock management and delivery management are simplified.

BRIEF DESCRIPTION OF THE DRAWINGS The front view of the use state of the latch apparatus of the handle for opening and closing a door which concerns on one Embodiment of this invention.

FIG. 2 is a perspective view of the front side of the latch device of FIG. 1. FIG.

3 is a perspective view of the back seat of the latch device of FIG.

4 is a perspective view of the rear right side of the latch device of FIG.

5 is a cross-sectional view taken along the line A-A of FIG.

FIG. 6 is a cross-sectional view taken along the line B-B in FIG. 5.

7 is a perspective view of a hook lever used in the latch device of FIG.

FIG. 8 is a perspective view of the base plate of the first dead point mechanism used in the latch device of FIG. 1. FIG.

9 is a perspective view of the apron portion of the main body used in the latch device of FIG.

10 is a perspective view of the cam lever used in the latch device of FIG.

FIG. 11 is a perspective view of a lock lever used in the latch device of FIG. 1. FIG.

12 is a longitudinal sectional view in the case where the latch device of FIG. 1 is used in the auto lock mode, and the hook lever is in a locked state, and the display of the lock is omitted for simplicity of illustration.

FIG. 13 is a longitudinal cross-sectional view when the key is inserted and rotated to release the hook lever in the state shown in FIG. 12, and the display of the lock is omitted.

FIG. 14 is a longitudinal cross-sectional view when the front proximal end of the hook lever is pressed in the state shown in FIG. 13 and the hook lever is tilted and rotated to an upright position, and the display of the lock is omitted.

15 is a longitudinal sectional view in the case where the latch device of FIG. 1 is used in the manual lock mode, and the hook lever is in a locked state, and the display of the lock is omitted for simplicity of illustration.

FIG. 16 is a longitudinal cross-sectional view when the key is released in the state of FIG. 15 when the key is inserted and rotated to release the hook lever, and the display of the lock is omitted. FIG.

17 is a longitudinal cross-sectional view when the front proximal end of the hook lever is pressed in the state shown in FIG. 16, and the hook lever is tilted and rotated to a standing position, and the display of the lock is omitted.

18 is a front view of a latch device according to another embodiment of the present invention.

19 is a longitudinal cross-sectional view of the latch device of FIG.

Claims (1)

The intermediate portion of the hook lever 3 inserted into the divided groove 2 of the main body 1 is pivotally mounted so as to be erected or laid on the main body 1 by the first horizontal pivot shaft 4, and the hook lever 3 And a transverse groove (6) on which the handle (5) for opening and closing the door is caught or peeled off at the rear end of the door), and the hook lever (3) corresponding to the position of the operating force point between the main body (1) and the hook lever (3). The first dead point spring mechanism (7) for rotating and pressing in a lying down or upright direction, According to the selected use mode, the use mode setting body 9 is detached from the rear base end 8 of the hook lever 3, and the cam lever 11 is pivoted to the main body 1 by the second horizontal pivot shaft 10. And a second dead point spring mechanism 12 for rotating and pressing the cam lever 11 in the front direction or the back direction corresponding to the position of the operating force point between the main body 1 and the cam lever 11, When the hook lever 3 is inclined to the upright position in the auto lock mode, the cam lever 11 is rotated to the front direction by pressing with the use mode setting body 9, and the hook lever 3 in the manual lock mode. The nose surface 13 which is not pressed by the rear base end 8 of the hook lever 3 to the cam lever 11 when tilted to the upright position, the first manual cam portion 14 and the second The manual cam part 15 is attached to the cam lever 11 at the site | part of the 2nd dead point spring mechanism 12 side rather than the 2nd horizontal pivot shaft 10, The lock lever 16 disposed on the front side of the cam lever 11 is pivotally mounted on the main body 1 by the second horizontal pivot shaft 10, and the hook lever 3 is opened in the auto lock mode and the manual lock mode. When rotating to the lying position, the posture holding spring member 17 which presses the lock lever 16 in such a way that the leading end of the lock lever 16 enters the rotational trajectory of the rear base end 8 of the hook lever 3. Is installed between the cam lever 11 and the lock lever 16, When the lock 18 is attached to the main body 1, the operating plate 20 is fixed to the rotor 19 of the lock 18, and the cam lever is rotated in a specific direction in the auto lock mode. A first drive cam portion 21 for pressing the first manual cam portion 14 of (11) and tilting the cam lever 11 in the back direction is provided at one end of the operation plate 20, and in the manual lock mode. When the rotor 19 is rotated in the opposite direction to the specific direction, the second drive cam portion 22 for pressing the second manual cam portion 15 of the cam lever 11 to incline the cam lever 11 in the rear direction. ) Is installed at the other end of the operation plate 20, When releasing the key 24 inserted into the key hole 23 of the rotor 19, the first drive cam portion 21 of the operation plate 20 is moved from the first manual cam portion 14 of the cam lever 11. The rotor 19 is rotated by the return spring member 25 so that the second drive cam portion 22 of the operation plate 20 is separated from the second manual cam portion 15 of the cam lever 11. Door latch device for opening and closing the door, characterized in that made.