JP4317406B2 - Handle latch device for door opening and closing - Google Patents

Description

  The present invention relates to a door opening / closing handle latch device, and more particularly, to a door opening / closing handle latch device provided with means or a mechanism for preventing unauthorized release of the handle latch device.

  The basic configuration of the door opening / closing handle latch device is described in Patent Document 1. This Patent Document 1 states that “the handle is fixed to the outer wall surface of the opening / closing body and that the spring of the handle click mechanism and the spring of the handle click mechanism are actuated on the mounting body via a pivot. In addition, a door opening / closing handle latching device provided with a hook lever provided to be tiltable is described.

  The door opening / closing handle latching device having this basic configuration is generally provided with an automatic locking means using a solenoid as a drive source and a manual locking means that can be unlocked by a key lock.

Therefore, when the thief hits the main body or the hook lever of the door opening / closing handle latch device equipped with the automatic lock means from the top, the lock piece of the automatic lock means that is engaged with and disengaged from the hook lever by the impact is locked. There was a problem of eliminating the (locked) state (becomes unlocked). For example, when a thief hits the upper end of the hook lever of the handle latch device with a hammer or the like, the impact causes the solenoid core to jump upward, and the operating rod moves in the unlocking direction (for example, the shrinking direction). However, there is a problem in that the hook lever can be tilted away from the hook lever.
Japanese Patent Publication No. 7-65420 Japanese Patent Publication No. 7-65421 JP 2002-227494 A

  The first object of the present invention is that even if a thief hits a handle latch device equipped with an automatic locking means with a hammer or the like, the lock piece that engages and disengages with the hook lever of the automatic locking means can be easily unlocked. It is to provide a handle latching device for opening and closing the door (first embodiment). The second purpose is that when the door latch handle latch device is struck with a hammer or the like, the impact locking member of the unauthorized unlocking prevention mechanism instantly engages with the engagement operating piece of the automatic locking means. (First embodiment).

  The door opening / closing handle latching device of the invention is a door opening / closing handle latching device provided with a hook lever that can be raised or tilted via a pivot on the mounting body so that the spring force of the spring of the handle click mechanism acts. In order to prevent unauthorized release of the handle latching device, a locking piece 55 for locking a hook lever to the mounting plate 40 fixed to the mounting body 3 and a locking piece and a horizontal shaft 49 are provided integrally. And an automatic locking means 45 provided with an engagement operating piece 48 that rotates by a predetermined amount corresponding to the expansion and contraction of the operating rod 47, and is attached to the mounting plate 40 at the time of locking. It is characterized in that an unauthorized unlocking prevention mechanism Y provided with a bounce-up locking piece 60 that is rotationally engaged with the engagement operating piece 48 by an impact when the hook lever 16 is hit is mounted. That.

In the above configuration, the unauthorized unlocking prevention mechanism supports the bounce-up locking piece 60 pivotally supported on the fixed shaft 61 of the mounting plate 40 and the bounce-up locking piece 60 at a predetermined disengagement position. It is characterized by comprising a support spring 62 provided on the fixed shaft or mounting plate and a support piece 42 of the mounting plate 40 with which a support end 62a of the support spring abuts. Further, a hook-like engagement portion 60a that engages with and disengages from the engagement operation piece 48 is formed on one end portion side of the jump-up locking piece 60 that is pivotally supported by the fixed shaft 61, and on the other end portion side, A weight 63 is provided. In addition, the automatic locking means 45 is an engagement work that rotates by a predetermined amount corresponding to the expansion and contraction movement of the driving source 46 fixed to the outer surface side of the mounting plate 40 and the operating rod 47 operated by the driving force of this driving source. It comprises a moving piece 48 and a lock piece 55 which is provided integrally with the engagement operating piece 48 and the horizontal shaft 49 and which is located on the inner surface side of the mounting plate 40 and engages / disengages with the hook lever 16. It is characterized by. Furthermore, a small engaged portion 65 that is engaged with and disengaged from the small engaging portion 66 provided on the back surface of the support portion 20 corresponding to the lower side of the hook lever 16 is provided at the free end portion of the lock piece 55. It is characterized by.

(1) According to the first aspect of the present invention, even when the handle latching device having the automatic locking means is struck with a hammer or the like, the lock piece that engages and disengages with the hook lever of the automatic locking means can be easily released. Does not lock. Therefore, it is difficult for the thief to tilt the hook lever and remove the operation handle from the hook lever.

(2) Further , when the handle latch device for opening and closing the door is struck with a hammer or the like, the jumping locking piece of the unauthorized unlocking prevention mechanism is instantly engaged with the engagement operation piece of the automatic locking means by the impact. Particularly, in the invention described in claim 2, since the spring-up locking piece is supported by the spring member, the repulsive force of the spring member acts at the time of impact, and the spring-up in the locking direction becomes smooth.

(3) In addition, it is possible in consideration of the structure of claim 5 in the invention described in claim 1 to achieve the first object.

Hereinafter, the present invention will be described in detail with reference to the best mode for carrying out the present invention shown in the drawings. 1 to 12 are explanatory views showing a first embodiment of the present invention.
Reference numeral 1 denotes an opening / closing door such as a vehicle door or a warehouse door. An example of a vehicle is a courier service with a door. The door does not matter whether it is a kannon door.
Reference numeral 2 denotes an elongate operation handle. One end of the operation handle is pivotally supported by an outer wall surface of one door, a support column of a warehouse, and the other end portion is mounted on an outer wall surface of the other door (opening / closing door) 1. It is latched by the fixed door opening / closing handle latch device X.

  The handle latch device X is fixed to an appropriate position of the opening / closing door 1 with or without an attachment plate in order to receive the free end portion of the bar-shaped operation handle 2. In the present embodiment, the door is fixed to the open / close door 1 via an attachment plate 40 provided with an automatic locking means 45 and an unauthorized unlocking prevention mechanism Y. First, the structure of the handle latch device X will be described separately, and then the unauthorized unlocking prevention mechanism Y will be described. In addition, about the matter which is not related to the specific requirement of this invention, or a detailed matter, detailed description is omitted as much as possible.

(1) Mounting body The vertically long mounting body 3 is attached to the outer wall surface of the door 1 in a vertical state via fixing means. For this purpose, a plurality of screw holes 5.5 for fixing tools are formed at appropriate positions (for example, the upper end side) of the attachment base portion 4 having a slightly thicker wall.

  As shown in FIG. 1, the lower end surface of the mounting base portion 4 is horizontal, while the upper end surface is formed in an arc shape. Further, an opening 6 is formed in the center portion (including the portion near the lower end portion) of the mounting base portion 4 so that a hook lever 16 described later can swing back and forth via the pivot 15. . As shown in FIGS. 4 and 5, the opening 6 is formed with respect to a case-like support portion or a ridge support portion 7 formed in a bulge shape from a portion near the center of the mounting base portion 4 to the lower end portion. Yes.

  As shown in FIG. 1, a U-shaped notch 8 for the operation handle 2 is formed at the center of the raised support 7, and the notch 8 communicates with the wide opening 6. Since the opening 6 is wider than the notch 8 and is formed deeply up to the raised support 7, the opening 6 is a storage 9 for the handle click mechanism 26 in this embodiment.

  A pair of left and right fingertip-shaped locking portions 10. 10 that form a part of the U-shaped cutout portion 8 are formed to protrude from the upper end portion of the raised support portion 7.

(2) Manual locking means The manual locking means 11 is provided at the lower end of the mounting body 3 as shown in FIG. As shown in FIG. 5, the manual lock means 11 includes a cylinder lock 12 and a lock key 13 for the cylinder lock. The cylinder lock 12 has an arbitrary shape protruding from the rear end portion of the outer cylindrical body. A driving piece 14 is provided. The drive piece 14 has an intermediate portion bent appropriately, and the other end can be pushed into an engagement operation piece 48 of an automatic locking means 45 described later through an opening 41 formed in the mounting plate 40. (See FIG. 7).

(3) Pivot = Horizontal Axis The rod-like pivot 15 is a horizontal axis, and is horizontally mounted on the center of the mounting body 3 via a hook lever 16. In this embodiment, the pivot shaft 15 is fitted into and detached from the pair of left and right cutout bearing portions 17.17 on the inner wall surface of the storage portion 9 described above. That is, both end portions of the pivot 15 are fitted into the notch-shaped bearing portions 17.17 and supported by the support plate 31 described later. Therefore, when the support plate 31 is removed, the hook lever 16 can be easily detached from the attachment body 3.

(4) Hook Lever The hook lever 16 is loosely fitted so that the remaining portion is located in the U-shaped cutout portion 8 of the raised support portion 7 except for the upper end portion of the fingertip shape. The hook lever 16 rotates in the front-rear direction within a range of a predetermined angle with the pivot 15 penetrating the horizontal shaft hole 24 at the center as a fulcrum.

  In other words, the hook lever 16 has a central portion (including a portion close to the central portion) pivotally supported by the raised support portion 7 via the horizontal shaft 15, and can swing up and down freely with the horizontal shaft 15 as a fulcrum. To do.

  Thus, the hook lever 16 has a finger shape when viewed from the front, and a shallow recess 18 for pressing the finger is formed at the lower end of the outer wall surface. On the upper side of the inner wall surface of the hook lever 16 with respect to the pivot 15, a receiving portion 19 for the operation handle 2 having an end surface or a laterally recessed shape is formed.

  As shown in FIG. 5, the upper end portion side of the hook lever 16 looks like a bent thumb. On the other hand, a block-shaped support portion 20 is provided on the lower end side of the hook lever 16. The support portion 20 has a receiving hole 21 that supports an upper support ball 27 that constitutes the handle click mechanism 26.

  Reference numeral 22 denotes a fingertip-shaped abutting portion constituting a part of the receiving portion 19, and this abutting portion 22 collides with a “pon” on the upper wall surface of the mounting base portion 4 when the hook lever 16 is closed. Reference numeral 23 denotes a projecting portion that constitutes a part of the receiving portion 19. The bottom surface of the inner wall of the projecting portion 23 is substantially the same as the bottom surface of the inner wall of the pair of left and right engaging portions 10.10 described above when the hook lever 16 is closed. It becomes a flat surface. Reference numeral 24 denotes a central horizontal shaft hole, and the bar-shaped pivot 15 is inserted into the horizontal shaft hole 24 as described above (see FIG. 5).

(5) Handle Click Mechanism The handle click mechanism 26 will be described with reference to FIGS. 27 is an upper support ball supported by the receiving hole 21 of the support portion 20 of the hook lever 16, 28 is a lower support ball supported by the receiving hole 33 of the support plate 31, and 29 is a spherical surface of the upper support ball 27 at the upper end. On the other hand, a spring as a spring member whose lower end is supported by the spherical protrusion of the lower support sphere 28, 30 is incorporated in the spring so that the spring does not swing left and right, and the hook This is a spring holding cylinder that is swingably interposed between the lower end surface 20 a of the support portion 20 of the lever 16 and the lower wall portion 32 having the receiving hole 33 of the support plate 31.

  In this embodiment, the upper and lower edge portions of the spring holding cylinder 30 can slide on the spherical protruding portions of the upper support ball 27 and / or the lower support ball 28 and correspond to the rotation of the hook lever 16. The lower end surface 20 a of the support portion 20 and the upper surface 32 a of the lower wall portion 32 of the support plate 31 can be alternately contacted.

(6) Operation of the handle click mechanism Since the spring 29 constituting the handle click mechanism 26 is held by the holding cylinder 30, the spring 29 is originally used (expands and contracts only in the length direction of the spring, and does not swing left and right). Is possible).

(7) Support plate The support plate 31 is demonstrated mainly with reference to FIG. 5, FIG. The support plate 31 is appropriately fixed to the storage portion 9 of the mounting body 3 via a plurality of fixing tools 38.38. As described above, reference numeral 32 denotes a lower wall portion having the receiving hole 33. The receiving hole 33 is formed in a slightly inclined central portion. An end edge portion of the lower wall portion 32 is bent downward and is in contact with the inner wall bottom surface of the storage portion 9.

  Reference numeral 34 denotes a pair of left and right stopper portions that are provided in an intersecting manner with the lower wall portion 32. At the upper end of these stopper portions 34.34, mounting holes 35.35 for the fasteners 38 are formed. As described above, the stopper portion 34.34 of the support plate 31 of the present embodiment has a stopper function for suppressing both ends of the pivot shaft 15 and a stopper function for receiving the lower end portion of the hook lever 16 when the hook lever 16 is completely tilted. There are both.

(8) Mounting plate The mounting plate 40 is fixed to the back side of the mounting body 3 through a fixing tool (not shown). The mounting plate 40 has a plurality of mounting holes, openings, and the like, but a detailed description is omitted. Here, the side facing the mounting body 3 with reference to FIG. 4 is the inner surface 40a of the mounting plate 40, and the side facing the opening / closing door side is the outer surface 40b of the mounting plate 40.

  When the mounting plate 40 is mounted on the mounting body 3, the outer surface 40b of the mounting plate 40 has a solenoid 46 as a driving source constituting the automatic locking means 45, as shown in FIG. The actuating rod 47, the engaging actuating piece 48 connected to the actuating rod, and at the time of locking, the jumping lock that engages the engaging actuating piece 48 by the impact when the mounting body 3 and / or the hook lever 16 is hit. The unauthorized unlocking prevention mechanism Y provided with the piece 60 can be seen.

  On the other hand, a lock piece 55 for locking the hook lever 16 is visible on the inner surface 40a of the mounting plate 40 as shown in FIG. The lock piece 55 can be engaged with and disengaged from the support portion 20 of the hook lever 16. An opening 41 for passing the drive piece 14 of the manual lock means 11 is formed in the lower part of the mounting plate 40.

(9) Automatic locking means The automatic locking means 45 is mounted on both the inner surface 40a and the outer surface 40b of the mounting plate 40 in this embodiment. Thus, the automatic locking means 45 includes a drive source 46 fixed to the outer surface (surface) 40 b side of the mounting body 3, an operating rod 47 that operates by the driving force of the drive source 46, and the expansion and contraction of the operating rod 47. An engagement operation piece 48 that rotates by a predetermined amount corresponding to the movement, and the engagement operation piece 48 and the horizontal shaft 49 are provided integrally, and are located on the inner surface (back surface) 40a side of the mounting body 3. And a hook piece 16 and a locking piece 55 that engages and disengages.

  The drive source 46 employs a solenoid, and the solenoid 46 is disposed in a vertical direction at a substantially central portion of the mounting plate 40. The vertical operating rod 47 of the solenoid 46 extends downward when the solenoid 46 is OFF (locked state), and contracts upward when the solenoid 46 is ON (unlocked state). . The horizontal shaft 49 is rotatably provided on the mounting plate 40, and one end portion of the engagement operating piece 48 is integrally provided on the protruding outer end portion of the horizontal shaft 49 via a fixing tool 50. ing.

  The projecting intermediate portion of the engagement operation piece 48 is pivotally supported by the projecting end portion of the operation rod 47, and a hook-shaped engagement portion 51 is formed at the other end portion. Further, as shown in FIGS. 9 and 10, the side wall portion 52 of the engagement operation piece 48 has a spring receiving function for receiving one end portion of a solenoid spring member 53 wound around the horizontal shaft 49 and the mounting plate 40. And a stopper abutting function for abutting against the stopper 54 formed in the above.

  Incidentally, one end of the solenoid spring member 53 is in pressure contact with the inner wall surface of the side wall portion 52 of the engagement operating piece 48, while the other end portion is in pressure contact with the lower end surface of the solenoid 46. In the present embodiment, the spring member 53 biases downward (locking direction) so that the operating rod 47 extends when the solenoid 46 is OFF. Further, the stopper 54 described above is protruded in the vicinity of the opening 41 of the mounting plate 40 so as to be able to contact the outer wall surface of the side wall portion 52 of the engagement operation piece 48, and the engagement operation piece 48 is locked together with the horizontal shaft 49. The engagement operation piece 48 is stopped at a predetermined position when it is rotated by a predetermined amount in the direction.

  On the other hand, as for the lock piece 55, the lock piece 55 is integrally attached to the horizontal shaft 49 in the same manner as the lock piece 55 via a fixing tool 56 at the protruding inner end portion of the horizontal shaft 49. Therefore, the lock piece 55, the horizontal shaft 49, and the engagement operation piece 48 rotate together when the operation rod 47 of the drive source 46 extends or contracts.

  Therefore, when the solenoid 46 is in the OFF state, the lock piece 55 of this embodiment is on the rotation locus of the hook lever 16 (for example, facing the inner surface of the lower end portion of the hook lever 16), and the hook lever 16 does not tilt. To lock.

On the other hand, when the solenoid 46 is in the ON state, the operating rod 47 contracts, so that the engagement operating piece 48 and the lock piece 55 rotate in the unlocking direction. As a result, the lock piece 55 is moved to the hook lever 16. And the hook lever 16 can be brought down.
The other configuration will be described. In the central portion of the horizontal shaft 49 described above, a peripheral flange 57 that is in sliding contact with the inner surface 40 a of the mounting plate 40 is provided, and a bearing plate 58 that covers the peripheral flange 57 is further provided on the mounting plate 40. Is fixedly attached to the inner surface 40a.

(10) Unauthorized Unlocking Prevention Mechanism As described above, the unauthorized unlocking prevention mechanism Y related to the engagement operation piece 48 of the automatic locking means 45 is provided on the outer surface 40b of the mounting plate 40. The unauthorized unlocking prevention mechanism Y includes a bounce-up locking piece 60 that engages with the engagement operation piece 48 by an impact when the upper part of the mounting body 3 and / or the hook lever 16 is hit at the time of locking.

  Therefore, the unauthorized unlocking prevention mechanism Y of the present embodiment supports the jumping-up locking piece 60 pivotally supported by the fixed shaft 61 of the mounting plate 40 and the jumping-up locking piece 60 at a predetermined disengagement position. The support spring 62 is provided on the fixed shaft 61 so that the support end 62a of the mounting plate 40 is in contact with the support spring 62.

  The support end 62 a of the support spring 62 supports one end of the spring-up locking piece 60 that is in the disengagement position while being in contact with the support piece 42.

  In other words, since the lower surface of the one end portion of the spring-up locking piece 60 is on the inclined support end portion 62a of the support spring 62 having a repulsive force, the support end portion 62a of the support spring 62 is the door opening / closing handle. When the upper part of the latching device is struck with a hammer or the like, the stepping-up function is achieved in which the rebounding force (returning force) of the support spring 62 and the impact spring are urged to rotate the jumping locking piece 60 in the engaging direction.

  Incidentally, a hook-like engagement portion 60a that engages with and disengages from the engagement operation piece 48 is formed on one end portion of the spring-up locking piece 60 that is pivotally supported by the fixed shaft 61, and on the other end side, As shown in FIG. 4, a weight 63 is provided. Since the weight 63 is provided at the other end portion (free end portion) of the spring-up locking piece 60, the elastic displacement of the support end portion 62a of the support spring 62 is promoted at the time of impact, and the spring-up locking piece 60 is lifted up. It has an auxiliary function that “disengages”.

(11) Operation of Unauthorized Unlocking Prevention Mechanism The operation of the unauthorized unlocking prevention mechanism will be described with reference to FIGS. 7, 11, and 12. FIG. 7 shows a state when the handle latching device is locked. In this case, the operating rod 47 of the drive source 46 extends in the direction of the arrow, and the engaging operating piece 48 is in contact with the stopper 54. Further, the lock piece 55 is at the position indicated by the solid line in FIG. 8, that is, on the rotation locus of the hook lever 16.

  Therefore, the lock piece 55 of the automatic lock means 45 has a relationship that can prevent the hook lever 16 from tilting and rotating. On the other hand, the flip-up locking piece 60 of the unauthorized unlocking prevention mechanism Y is in a horizontal state or a slightly inclined state while being supported by the support end 62a of the support spring 62, and the hook-like engagement portion 60a is It is away from the engagement operating piece 48 of the automatic locking means 45.

  On the other hand, FIG. 11 shows a state when the handle latch device is unlocked. In this case, the operating rod 47 of the drive source 46 contracts in the direction of the arrow, and the engagement operating piece 48 moves away from the stopper 54.

  Further, since the lock piece 55 is located at the position indicated by the phantom line in FIG. 8, that is, the lock piece 55 is off the rotation locus of the hook lever 16, the hook lever 16 can be tilted. Thus, when the operating rod 47 expands and contracts by the driving force of the driving source 46 of the automatic locking means 45, the lock piece 55 applies and unlocks the hook lever 16 via the engagement operating piece 48 and the movable horizontal shaft 49. .

  In the above-described locking / unlocking mode, it is assumed that the thief hits the mounting body 3 and / or the upper end of the hook lever 16 with a tool (not shown) during locking. At this time, as a matter of course, vibration such as “dawn” is generated in the mounting body 3 in the vertical direction. At this time, due to the impact (vibration) in the vertical direction of the mounting body 3, the operating rod 47 of the drive source tends to contract as described above, but it jumps up and stops immediately before the operating rod 47 contracts. The piece 60 rotates in the engaging direction with the fixed shaft 61 as a fulcrum. As a result, the hook-like engaging portion 60a engages with the engaging operation piece 48 of the automatic locking means 45 (see FIG. 12).

  The reason for this is that the resistance of other members (such as the driving rod 47 of the drive source, the spring member 53, the horizontal shaft 49, etc.) acts on the engagement operating piece 48, while the jumping locking piece 60 has a stepping spring function. This is because a weight 63 that is supported by 62 and has an auxiliary function of “disengaging” is provided at the free end.

  Therefore, even if the thief hits the handle latch device X provided with the automatic lock means 45 with a hammer or the like, the lock piece 55 that engages and disengages with the hook lever 16 of the automatic lock means does not easily become unlocked.

  In the first embodiment, the support spring 62 need not necessarily be provided on the fixed shaft 61, as long as it has a function of supporting the spring-up locking piece 60 at a predetermined disengagement position. For example, one end of a leaf spring as an example of the support spring 62 may be appropriately fixed to the mounting plate 40, and the free end 62a may be used to support the jump-up locking piece 60.

  Next, in this section, a second embodiment of the present invention will be described. Since the object of the second embodiment is the same as that of the first embodiment, the same parts are denoted by the same reference numerals and redundant description is omitted.

  The second embodiment shown in FIGS. 13 to 16 shows that “the engagement operating piece 48 of the automatic locking means 45 is caused by an impact when the mounting body 3 and / or the hook lever 16 is hit against the mounting plate 40 during locking. The hook lever 16 is provided with a small engagement portion (for example, a small protrusion) 66 that engages with a small engagement portion (for example, a small recess) 65 of the lock piece 55 so as not to move in the unlocking direction. Features.

  Referring to FIG. 14, the small engaged portion 65 is provided on the inner wall surface of the support portion 20 of the hook lever 16, so that the small engaging portion 66 is correspondingly connected to the distal end portion of the lock piece 55. Provided. As described above, the lock piece 55 rotates together with the movable horizontal shaft 49. However, as shown in FIG. 15, the lock piece 55 faces the support portion 20 of the hook lever 16 when locked, and therefore, the lock piece 55 has a small recess. The point 65 and the small protrusion of the hook lever 16 are engaged.

  Even if the thief hits the handle latching device X equipped with the automatic locking means 45 with a hammer or the like, the lock piece 55 and the hook lever 16 are not merely in a face-to-face relationship, so long as they do not exceed a certain limit. Therefore, even if the actuating rod attempts to move in the unlocking direction (for example, the shrinking direction) due to the impact force, the actuating rod 48 is unlocked in the unlocking direction. Does not move easily to.

  In the present embodiment, the reason why the small engaged portion 65 and the small engaging portion 66 are engaged is that the locking piece 55 does not rotate at the degree of vibration caused by the strike of the mounting body 3 during locking, When the force in the unlocking direction from the manual locking means 11 or the automatic locking means 45 is positively applied to the engaging operation piece 48, when the engaging force of the lock piece 55 exceeds a certain limit, The small recess 65 of the lock piece 55 is disengaged from the small protrusion 66 of the hook lever 16, and the lock piece 55 rotates to the position of the phantom line (unlocked position) shown in FIG.

  Note that the engagement relationship between the small engaged portion 65 and the small engaging portion 66 may be reversed, and the small engaged portion 65 and the small engaging portion 66 may be plural.

  The present invention is mainly attached to the rear and side doors of a van type vehicle.

1 to 12 are each explanatory views showing the best embodiment of the present invention. 13 and 16 are explanatory views showing a second embodiment of the present invention.
Explanatory drawing from the front in the case of attaching to the outer wall surface of an opening-and-closing door. Explanatory drawing from a plane. Explanatory drawing from the right side. Explanatory drawing of the state which removed the attachment board from the attachment main body of the handle latch apparatus. The disassembled perspective view which shows the structure by the side of the attachment main body of a handle latch apparatus. Schematic explanatory drawing seen from the storage part side of the mounting body (when the hook lever is closed). The schematic explanatory drawing which shows the positional relationship of each member of the principal part at the time of locking of a handle latch device. The schematic explanatory drawing seen from the inner surface side of the mounting plate. Schematic explanatory drawing which shows the relationship between a hook lever and the locking piece of an automatic type | formula lock means. Explanatory drawing which shows the principal parts (a lock piece, a movable horizontal axis, an engagement action | operation piece etc.) of an automatic lock | rock means. The schematic explanatory drawing which shows the positional relationship of each member of the principal part at the time of unlocking of a handle latch device. FIG. 6 is a schematic explanatory diagram of a state in which a jump-up locking piece is engaged with an engagement operation piece when vertical vibrations are generated in the mounting body. The figure similar to FIG. 4 of 2nd Example. The same figure as FIG. The perspective view of the principal part. Explanatory drawing of an effect | action.

X: Door latching device for opening / closing the door, 1 ... Opening / closing door, 2 ... Operation handle, 3 ... Mounting body, 4 ... Mounting base part, 6 ... Opening part, 7 ... Raised support part, 8 ... Notch part, 9 ... Storage part DESCRIPTION OF SYMBOLS 10 ... Locking part, 11 ... Manual type locking means, 15 ... Pivot, 16 ... Hook lever, 17 ... Bearing part, 20 ... Supporting part, 22 ... Contact part, 23 ... Projection part, 24 ... Horizontal shaft hole, 26 ... handle click mechanism, 27 ... upper support ball, 28 ... lower support ball, 29 ... engagement arm, 30 ... spring holding cylinder, 31 ... support plate, 32 ... lower wall part, 34 ... stopper part, 38, 50, 56 ... Fastening tool, 40 ... Mounting plate, 41 ... Opening, 42 ... Supporting piece, 45 ... Automatic locking means, 46 ... Drive source, 47 ... Actuation rod, 48 ... Engagement working piece, 49 ... Horizontal axis, 53 ... Spring member for drive source, 55 ... Lock piece, Y ... Unauthorized unlock prevention mechanism, 60 ... Bounce-up locking piece, 60 a ... engaging portion, 61 ... fixed shaft, 62 ... support spring, 62a ... support end, 63 ... weight.

Claims (5)

  In a handle latching device for opening and closing a door provided with a hook lever that can be raised or tilted via a pivot on a mounting body so that a spring force of a spring of a handle click mechanism acts, the handle latching device is illegally released. In order to prevent this, the mounting plate 40 fixed to the mounting body 3 is provided integrally with the locking piece 55 for locking the hook lever and the locking piece via the horizontal shaft 49, and the operating rod 47 is extended and retracted. The automatic locking means 45 provided with the engagement operation piece 48 that rotates by a predetermined amount corresponding to the above is mounted, and the mounting body 40 and / or the hook lever 16 are struck by the impact when the mounting lever 40 is struck. A door latch opening / closing handle latching device, which is equipped with an unauthorized unlocking prevention mechanism Y provided with a bounce-up locking piece 60 that rotationally engages with the engagement operating piece 48.   2. The unauthorized unlocking prevention mechanism according to claim 1, wherein the flip-up locking piece 60 pivotally supported by the fixed shaft 61 of the mounting plate 40 and the spring-up locking piece 60 are supported at a predetermined disengagement position. A door opening / closing handle comprising a support spring 62 provided on the fixed shaft or the mounting plate so as to be able to support, and a support piece 42 of the mounting plate 40 with which a support end 62a of the support spring abuts. Latch device.   In Claim 1 or Claim 2, a hook-like engagement portion 60a that engages with and disengages from the engagement operation piece 48 is formed on one end portion of the spring-up locking piece 60 that is pivotally supported by the fixed shaft 61. On the other hand, a door latch handle device for opening and closing a door, wherein a weight 63 is provided on the other end side.   In claim 1, the automatic lock means 45 has a predetermined amount corresponding to the expansion and contraction of the driving source 46 fixed to the outer surface side of the mounting plate 40 and the operating rod 47 operated by the driving force of the driving source. A rotating engagement operation piece 48 and a lock piece provided integrally with the engagement operation piece 48 and a horizontal shaft 49 and located on the inner surface side of the mounting plate 40 and engaged with and disengaged from the hook lever 16. 55. A door latch opening / closing handle latching device. In claim 1, at the free end of the lock piece 55, there is a small engaged portion 65 that engages with and disengages from a small engaging portion 66 provided on the back surface of the support portion 20 corresponding to the lower side of the hook lever 16. A handle latching device for opening and closing a door, which is provided .

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