JP2007327272A - Auxiliary lock for locking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an auxiliary lock for a locking device facilitating the unlocking operation of the locking device. <P>SOLUTION: The auxiliary lock for the locking device is mounted to a lock case which includes the locking device. The auxiliary lock comprises an engaging rotation body 71 between a base plate 52 and a cover plate, and a locking means 81 for locking the engaging rotation body 71 in a predetermined unlock position, respectively in a rotatable manner. The auxiliary lock further comprises an unlock state holding spring 89 with its spring force always applied in a direction to engage an engaging claw 86 formed at the locking means 81, with an engaging protrusion 77 provided at the engaging rotation body 71, and a cam member 91 eliminating retention of the unlock state of the engaging rotation body 71. When the engaging protrusion 77 of the engaging rotation body 71 is displaced in the rotating position from the position of the lock state into the position of the unlock state by the operating force of a duplicate key K, the engaging protrusion 77 is locked to the engaging claw 86 of the locking means 81, going over the engaging claw 86 against the spring force of the unlock state holding spring 89. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an auxiliary lock for a locking device, for example, an auxiliary lock in a locking device for a vehicle shutter.

  Patent Document 1 describes a shutter device for a vehicle shutter that can automatically lock a hook on the shutter side with respect to a locking means (striker) on the lower frame side of the vehicle simply by closing the shutter. Yes.

  The locking device includes a hook mechanism that automatically engages with a striker provided in the lower frame of the cargo compartment opening when the shutter is closed, a hook release mechanism that releases the engagement, and an operation that releases the engagement. 9 and 10, the locking mechanism includes a locking spring 30 attached at one end to the locking retractor 19 and at the other end attached to the lock case 10. (Terms and symbols are matched to Patent Document 1 as much as possible).

  First, FIG. 9 is a conceptual diagram showing points of Patent Document 1. In FIG. 9, 2 is a shutter curtain, 10 is a lock case for the locking device X, 19 is a locking retractor that slides in the horizontal direction, and 30 is a locking that always urges the locking retractor 19 in the locking direction (arrow A). A spring 18 is a cylinder lock connected to one end of the locking retractor 19 via a connecting arm 18a in order to return the locking retractor 19 in the automatic locking position (solid line position) to the unlocking position (virtual line position). Reference numeral 15 denotes a cam plate (lever hub) that rotates in the direction of arrow B by the operating force of the opening / closing lever 14 as the second operating means.

  As is clear from FIG. 9, the embodiment described in Patent Document 1 includes a locking spring 30 in the lock case 10, and therefore the locking retractor 19 has a cam plate (lever hub) of a hook release mechanism as shown by a solid line. Or the cam member 15) is always located above the cam plate 15 and obstructs the rotation of the cam plate 15 in the B direction.

  Next, FIG. 10 shows the structural members of the locking device X built in the lock case. In FIG. 10, reference numeral 10 denotes a lock case of the locking device X. The lock case 10 has a shutter curtain so that the hook 9 is engaged with and disengaged from the striker 8 of the lower frame 7 of the cargo compartment opening (not shown). 2 is fixedly attached to the back surface of the lower central portion.

  FIG. 10 schematically shows main components of the internal structure of the locking device X by removing the side wall of the lock case on the near side as viewed from the cargo compartment of the vehicle. Since the internal structure of the locking device X is already known, the main components will be described below with reference to FIG.

  9 is a hook-like hook that is pivotally supported at the lower right side of the case 10, and the hook 9 is always urged in the direction of arrow E by the spring force of the hook spring 11 disposed obliquely on the left side. . When the shutter curtain 2 is pulled down, the hook 9 moves upward as shown by the arrow F because the operation piece 12 slidably provided at the lower central portion via the guide means. To the engagement direction (clockwise) to engage with the striker 8.

  On the other hand, as shown in FIG. 13, when the hook 9 is unlocked, the hook 9 rotates in the direction of disengagement of the arrow H so as to push down the operating piece 12 by the spring force of the hook spring 11, and the striker Deviate from 8. Therefore, the shutter curtain 2 can be lifted.

  Returning to FIG. 10, reference numeral 21 denotes a lever (came stopper) of a hook mechanism that is pivotally supported on the upper right side of the case 10. The lever 21 has a handle-type operation unit on the upper side and a hook 9 on the lower side. It has a stopper 13 that engages with and disengages from the portion 9a.

  Reference numeral 16 denotes a retractor for opening a hook provided in a horizontal state at the center of the case, and the retractor 16 is always attached in a direction away from the hook 9 by a spring force of a return spring 17 disposed slightly obliquely on the left side. It is energized.

  Reference numeral 15 denotes a cam plate (cam member) that is pivotally supported on the central portion of the case so as to be positioned near the central portion of the retractor 16. The cam plate 15 is manually operated from the outer wall surface side of the shutter curtain 2. The retractor 16 is rotated in the direction in which the retractor 16 is pressed against the hook 9 (in the direction of arrow B in FIG. 9) by the operating force of the opening / closing lever 14.

  Reference numeral 18a denotes a connecting arm constituting the cylinder lock 18, and a locking retractor 19 is connected to the upper end of the connecting arm 18a. The locking retractor 19 is urged so as to always stop at the automatic locking position by the locking spring 30 as described above.

  In the embodiment of the above configuration, when the shutter curtain 2 is manually lowered in the downward direction indicated by the arrow C in FIG. 9, the shutter curtain 2 automatically engages with the striker 8 of the lower frame 7 shown in FIG. Locked by the hook 9. At that time, as described above, the locking retractor 19 is always positioned above the cam plate 15 by the spring force of the locking spring 30, so that the hook 9 is automatically locked and the cam plate 15 is already locked. It is in a state. Therefore, in this embodiment, after the shutter curtain 2 is closed, there is an advantage that the cam plate 15 to the hook 9 are not easily unlocked.

  However, on the other hand, there is a problem that it takes a lot of time and effort to bring the locking device X into the unlocked state. That is, as shown in FIG. 11, first, a first operating means (for example, a key) (not shown) is inserted into the cylinder lock 18, and the connecting arm (bab lever) 18 a is turned in the counterclockwise direction I indicated by the arrow, thereby locking the retractor 19. Must be pulled back against the spring force of the locking spring 30. That is, it is necessary to retract the locking retractor 19 to the phantom line position in FIG. 9 (Step 1).

  Next, while maintaining the unlocked state of the cylinder lock 18 manually, as shown in FIG. 12, the second operating means (for example, the opening / closing lever) 14 is rotated counterclockwise as indicated by the arrow to retract the hook. 16 needs to be pressed against the lower end portion of the lever (kama stopper) 21.

In addition, the reason why the second operating means 14 is operated simultaneously with the first operating means for the cylinder lock 18 is that the lever 21 is rotated counterclockwise as indicated by the arrow I, and the retractor 16 is displaced in the arrow J direction. This is because it is necessary to remove the stopper 13 of the lever 21 from the upper engaging portion of the hook 9. In this way, when the handle lever 21 is rotated by the operating force of the second operating means 14 via the hook releasing retractor 16, the hook-like hook 9 is disengaged by the spring force of the hook spring 11. Rotates automatically to Therefore, the shutter 2 can be lifted.
JP 2001-31336 A

  The initial object of the present invention is to unlock the cylinder lock of the lock case by the first operating means regardless of the use such as the shutter of the vehicle luggage compartment, the shutter of the garage, the door of the warehouse, the door of the container, etc. In the case where a locking device that unlocks the cam member on the condition of the unlocking operation by the second operating means is incorporated, the unlocking operation of the locking device is facilitated.

  In particular, according to the present invention, first, the first operating means is operated to the cylinder lock to be in the unlocked state, and then the cam member is moved in the unlocking direction while the unlocked state is held by the locking means. Applicable when retrofitted to a lock case of a locking device that is fully unlocked by operating.

  The second purpose is that it can be retrofitted to one side of a lock case of a known locking device. That is, it is not necessary to improve the internal structure of a known locking device. The third purpose is that it can be easily retrofitted. The fourth object is to combine the constituent members in a compact manner. The other purpose (automatically returning the engaging rotator to the locked position) is objectively determined in relation to the specific requirements of the invention.

  The auxiliary lock for a locking device according to the present invention is a locking attached to a lock case including a locking device that unlocks the first operation member with respect to the cylinder lock and the second operation member with respect to the cam member. An auxiliary lock for the device, the auxiliary lock being rotatably provided with an engaging rotating body and a locking means for locking the engaging rotating body at a predetermined unlocking position between the base plate and the cover plate, respectively. The unlocking state holding spring and the engaging rotating body are released so that the spring force always acts in a direction in which the engaging claw formed on the locking means can engage with the engaging protrusion provided on the engaging rotating body. An unlocking state canceling means for canceling the holding of the locked state, and the engaging projection of the engaging rotating body is rotated from the locked position to the unlocked position by the operating force of the first operating means. When displaced, it resists the spring force of the unlocked state holding spring. , Wherein the engaging projection is engaged with the engaging pawl beyond the engaging pawl of the locking means.

  In the above configuration, the lock case of the locking device is fixed to the back side of the vehicle shutter, and the unlocking operation of the operating means is performed by first unlocking the first operating means relative to the cylinder lock, and then the cylinder lock. The unlocking operation by the second operating means is performed on the means (for example, the cam member) for canceling the unlocking state of the engaging rotating body in the state where the unlocking state is held by the locking means. To do.

  Further, the locking means is provided with an arm extending to the cam member side rotatably provided between the base plate and the cover plate, and when the cam member rotates in a predetermined direction by the operating force of the second operating means. The locking means is characterized in that the engaging claw rotates in a direction away from the engaging protrusion of the engaging rotating body.

  In addition, a locking position return spring is provided between the base plate and the cover plate to return the engaging rotating body to the locking position at the moment when the engaging claw of the locking means is separated from the engaging protrusion of the engaging rotating body. It is characterized by being. Further, one end of the unlocking state holding spring is attached to the arm side of the locking means, while the other end is attached to the base plate or the lid plate.

  Each of the base plate and the cover plate has a shaft hole, and the center of the locking means is pivotally supported by a fixed column inserted into the shaft hole.

  In this case, preferably, the fixing column has a female screw, and fixing means for fixing the cover plate to the base plate is screwed onto the female screw. Further, the base plate is attached to one side surface of the case seen from the cargo compartment side of the vehicle.

(1) The invention according to claim 1 is based on the first operation means for the cylinder lock in the lock case irrespective of the use such as the shutter of the luggage compartment of the vehicle, the shutter of the garage, the door of the warehouse, and the door of the container. In the case of incorporating a locking device that unlocks on condition that the unlocking operation and the unlocking operation of the cam member by the second operating means, only the second operating means is held with the cylinder lock held in the unlocked state in advance. Can be operated, so that the unlocking operation of the locking device can be facilitated.
(2) In the invention described in claim 1, first, the first operating means is operated to the unlocked state with respect to the cylinder lock, and then the unlocked state is held by the locking means. This method is suitable when retrofitting to a locking device in which a means (for example, a cam member) for canceling the holding of the unlocking state of the engaging rotating body is operated in the unlocking direction to make it completely unlocked.
(3) The invention described in claims 2 to 8 includes, for example, a base plate and a cover plate that is integrally fixed to the base plate via fixing means, and between the base plate and the cover plate, Since the members required for the specific requirements of the invention such as the engaging rotator, the locking means, the unlocking state holding spring, etc. are arranged, it can be retrofitted to one side of the lock case of the locking device. There are effects such as being able to be performed, and being able to combine the constituent members in a compact manner.

  Since this invention is applied to the Example described in patent document 1, for example, the locking device X of patent document 1 is demonstrated as an example. 1 to 8 show the best mode for carrying out the present invention.

(1) Environment for Implementing the Invention FIG. 1 is a schematic side view showing the environment for implementing the invention. X is a locking device described in Patent Document 1, and as described above, the locking device X is a lock case (hereinafter referred to as “case”) fixed to the lower central portion on the back side of the shutter curtain (virtual line) 2. ) 10 is built in. Accordingly, reference numeral 50 denotes the outside of a container type vehicle not shown, and reference numeral 51 denotes the inside of the container (loading room). The auxiliary lock Y for the locking device of the present invention is attached to one side surface 10a of the case 10 so as to be seen from the cargo compartment 51 side.

  By the way, the locking device X to be attached is merely an example, and is not limited to the embodiment described in Patent Document 1. The locking device X to be attached according to the present invention is regulated by the cylinder lock directly or indirectly (locking retractor 19 in Patent Document 1) together with the first operation means (joint key) for the cylinder lock 18 or the restriction is released. Even if the second operating means (open / close lever) 14 for the cam member to be moved is not operated at the same time, first, the engaging rotating body 71 is rotated to the unlocked position by the first operating means K for the locking device X, As a result, the unlocked state of the cylinder lock 18 of the locking device X is indirectly held by the locking means 81, and then the opening / closing lever 14 as the second operating means is operated alone to engage the engaging means (for example, Patent Documents). This is suitable for canceling the engagement state of the single hook 9). In addition, it is suitable for lifting the shutter curtain 2 by releasing the lock state of the lock means simply by operating the second operation means with one hand.

  FIG. 2 is an explanatory view of one embodiment of the present invention as viewed from the luggage compartment side. The main members of the auxiliary lock Y for the locking device according to the present embodiment are a base plate 52 fixedly attached to a central portion or an upper side of one side surface (outer surface seen from the cargo compartment side) 10a of the case 10, and the base plate 52. The lid plate 53 is fixed to the interior. In addition, the main members are housed in a narrow space between the base plate 52 and the cover plate 53 in a sandwich state.

(2) Base plate 52
FIG. 3 shows a base plate 52 of the auxiliary lock Y, while FIG. 4 shows a cover plate 53 integrated with the base plate 52 via a fixing means. Both plates 52 and 53 are appropriately provided with a hole for a fixing tool, a fixing piece part for a fixing tool, a notch part, a shaft hole, a guide long hole for a regulation pin, a fitting hole for a rotating body, and the like. Is provided. Here, necessary parts are described in relation to the specific requirements of the invention, and detailed explanations are omitted.

  First, the configuration of the base plate 52 will be described. Reference numeral 54 denotes a fixing tool hole formed in the central portion (including a portion near the central portion), and an unnumbered fixing tool is inserted into the hole 54. An unnumbered fixing tool is used when positioning and fixing the base plate 52 to one side surface 10a of the case 10 in advance.

  With reference to the positioning hole 54, a first fitting hole 55 and a second fitting hole 56 are formed on the left and right sides of the base plate 52, respectively. 57 is a first guide elongated hole for a regulation pin formed in an arc shape on the concentric circle of the first fitting hole 55, while 58 is a regulation pin formed in an arc shape on the concentric circle of the second fitting hole 56. It is the 2nd guide slot for. The first guide slot 57 and the second guide slot 58 are each formed in an arc shape in this embodiment. Reference numeral 59 denotes a shaft hole formed on the lower side of the central portion. A cylindrical fixed column 82 having a shaft function described later is inserted into the shaft hole 59. Reference numeral 60 denotes an attachment portion for a spring member provided at the lower right side. Note that one or a plurality of holes 61 for fixing the base plate 52, attachment portions 62 for fixing the cover plate 53, and the like are appropriately formed.

(3) Lid plate 53
Next, the configuration of the cover plate 53 will be described with reference to FIG. Reference numeral 63 denotes a plurality of attachment portions formed at the upper end and corresponding to the attachment portion 62 on the base plate 52 side, and 64 is a through-hole formed in the central portion (including a portion closer to the central portion).

  From the through-hole 64, an unfixed fastener can be seen as shown in FIG. When a screwdriver (not shown) is inserted into the through-hole 64 of the lid plate 53, the numberless fixing tool on the base plate 52 side can be tightened or loosened. Left and right support holes 65 and 66 are formed on the left and right of the through hole 64, respectively. The left support hole (first support hole) 65 corresponds to the first fitting hole 55 on the base plate 52 side, while the right support hole (second support hole) 66 corresponds to the second fitting on the base plate 52 side. Corresponds to the hole 56.

  In the present embodiment, the restriction pin guide slot is formed on the base plate 52 side, and thus is not formed on the lid plate 53. Of course, a guide pin guide hole may be formed in the cover plate 53 depending on the design. Reference numeral 69 denotes a shaft hole corresponding to the shaft hole 59 on the base plate 52 side. In addition, unnumbered fitting recesses are formed around the shaft holes 59 and 69, respectively.

(4) Engagement Rotator With reference to FIGS. 7 and 8, the configuration of the engagement rotator 71 will be described. The engaging rotator 71 is fitted into the first fitting hole 55 on the base plate 52 side and the first support hole 65 on the lid plate 53 side. Accordingly, as shown in FIG. 7, a disc-shaped first fitting portion 72 that fits into the first fitting hole 55 on the base plate 52 side protrudes from the central portion of one side surface 71 a of the engaging rotator 71. Has been. The first fitting portion 72 has a plurality of engagement surfaces 72a with which the tip end portion of the key K is selectively engaged on the inner periphery thereof. Further, in the vicinity of the outer peripheral end of one side surface 71a of the engaging rotator 71, a regulation pin 73 that engages with the first guide slot 57 on the base plate 52 side is provided in a protruding state.

  On the other hand, as shown in FIG. 8, a disc-like second fitting portion 74 supported by the first support hole 65 on the lid plate 53 side is formed projectingly at the center portion of the other side surface 71 b of the engaging rotator 71. ing. Therefore, the engaging rotator 71 is rotatably supported by the base plate 52 and the cover plate 53 via the front and rear (base plate 52 side and cover plate 53 side) fitting portions 72 and 74.

  Further, a notch portion 75 is formed in a part of the other side surface 71b of the engaging rotator 71, and a spring for urging the engaging rotator 71 to the locking position is provided at an appropriate position in the notch portion 75. A spring end support portion 76 for attaching one end portion is provided.

  Reference numeral 77 denotes an engagement protrusion formed on the outer peripheral surface 71c of the engagement rotating body 71 in the radially outward direction. The engagement protrusion 77 is formed in a “U” shape (in the figure, as shown in FIGS. 5 and 6). It is engaged with and disengaged from the locking claw of the locking means 81 formed in the “reverse direction”.

(5) Locking means 81
The configuration of the locking means 81 will be described with reference to the drawings. The locking means 81 is a locking lever having a plurality of arms in this embodiment. As shown in FIG. 1, FIG. 5, etc., the central portion of the locking means 81 is pivotally supported by a cylindrical fixed column 82 having a shaft function. As described above, the cylindrical fixing column 82 is inserted into the shaft holes 59 and 69 on the base plate 52 side and the lid plate 53 side, and is fixed by caulking. Further, since the fixed column 82 has an unnumbered internal thread, as shown in FIG. 2, the lid plate 53 is integrally fixed to the base plate 52 via the fixing means 83, the fixed column 82, and the like.

  Now, as shown in FIGS. 5 and 6, the locking means 81 is engaged with and disengaged from the engaging protrusion 77 of the engaging rotator 71 at the tip of the first arm 85 extending downward from the engaging rotator 71. It has an engaging claw 86. On the other hand, one end of an unlocked state retaining spring 89 is attached to the center of the second arm 87 extending toward the unlocked state canceling means (cam member) 91 rotating by the operating force of the second operating means 14. ing.

(6) Unlocked state retaining spring 89
As the unlocked state holding spring 89, for example, a tension spring is adopted, and one end portion thereof is attached to the second arm side 87 of the locking means 81, while the other end portion is attached to the base plate or the cover plate side. 60. In the present embodiment, the other end portion of the tension spring 89 is attached to an attachment portion 60 provided at the lower right end portion of the base plate 52. The unlocking state holding spring 89 is a member that always applies a spring force in a direction in which the engaging claw 86 formed on the locking means 81 can engage with the engaging protrusion 77 provided on the engaging rotating body 71. is there. Therefore, the type of the spring 89 can be adopted as appropriate.

(7) Cam member 91 and lock position return spring 92
Between the base plate and the cover plate, for example, a cam member 91 that can be rotated by an operating force of the second operating member 14 and a locking position return spring 92 of the engaging rotating body 71 are disposed. For example, the cam member 91 is an example of means (unlocking state canceling means) for canceling the holding of the unlocking position (cylinder lock is unlocked) of the engaging rotating body 71 and is a specific requirement of the present invention.

  However, as shown in FIG. 6, the cam member 91 and the engaging rotating body 71 are automatically locked when the unlocking state is held by the locking means 81. This is a sub-configuration necessary for “when the object of the invention of reverting to the above is taken into consideration”.

  Therefore, when the cam member 91 is provided, it is desirable to dispose a locking position return spring 92 for automatically returning the engaging rotator 71 to the locking position at the same time.

  In this embodiment, the cam member 91 is fitted in the second fitting hole 56 of the base plate 52 and the second support hole 66 of the lid plate 53 so that the cam member 91 can be engaged with the second arm 87 of the engagement rotating body 71. A cylindrical fitting portion 91a supported by the cylindrical fitting portion, an engagement portion 91b extending in a fan shape radially outward from the cylindrical fitting portion 91a, and protruding from one end of the engagement portion 91b, and a base plate It consists of an unrestricted regulation pin guided in the 52 second guide slot 58. And the square shaft part of the 2nd operation means 14 which penetrates the cam member 15 of the locking device X is inserted by the said cylindrical fitting part 91a.

  The locking position return spring 92 is, for example, a glasses-shaped biasing spring, and one end thereof is attached to the spring end support portion 76 of the engaging rotator 71, while the other end is the base plate 52 or It is attached to the lid plate 53.

(8) Main Action When the first operating member (joint key) K is inserted into the cylinder lock 18 of the locking device X, the insertion tip of the first operating member K engages with the engaging surface 72a of the engaging rotator 71. . Therefore, when the first operating member K is rotated in the unlocking direction, the engagement rotating body 71 rotates to the unlocking position. As shown in FIG. 6, just before the engaging rotator 71 reaches the fully unlocked position by the operating force of the first operating member K, the engaging protrusions 77 of the engaging rotator 71 are engaged with the engaging claws 86 of the locking means 81. Press down. At this time, the engagement rotator 71 rotates slightly counterclockwise against the spring force of the unlocked state holding spring 89.

  Thus, as soon as the engaging protrusion 77 passes the engaging claw 86 (beyons the engaging claw), the spring force of the unlocked state holding spring 89 acts, and the engaging claw 86 locks the engaging protrusion 77. . Thereby, the unlocking position (unlocked state) of the cylinder lock 18 and the engaging rotating body 71 is maintained (state of FIG. 6).

  By the way, in order to cancel the unlocking position (unlocked state) of the engagement rotating body 71, the cam member 91 is brought into the spring force of the unlocked state holding spring 89 by the operating force of the second operating means 14. Accordingly, it is rotated in a predetermined direction (counterclockwise direction indicated by an arrow in FIG. 6).

  Then, since the engaging portion 91 b of the cam member 91 presses the second arm 87, the lever-like locking means 81 moves in a direction in which the engaging claw 86 is separated from the engaging protrusion 77 of the engaging rotating body 71. Rotate. As a result, in this embodiment, the engaging rotator 71 automatically returns from the unlocked position in FIG. 6 to the locked position in FIG. 5 by the spring force of the locking position return spring 92.

  In the embodiment shown in the embodiment of the invention, the form of the base plate 52 is not particularly limited, and may be formed in a case shape, for example. The cam member 91 is an example of a unit (unlocked state canceling unit) that cancels the holding of the unlocked position (unlocked state) of the engaging rotating body 71.

  INDUSTRIAL APPLICABILITY The present invention is mainly used for applications such as a vehicle luggage compartment shutter, a garage shutter, a warehouse door, and a container door.

1 to 8 are explanatory views showing the best embodiments of the present invention. FIG. 9 thru | or FIG. 13 is each explanatory drawing which shows an example of the locking device of the example of application of this invention.
The schematic side view (side view) which shows the environment of implementation of invention. The schematic side view (front view) which shows the environment of implementation of invention. The front view of a base board. The front view of a cover board. Schematic explanatory drawing of the locking position (cylinder lock is locked). Schematic explanatory drawing of an unlocking position (a cylinder lock is an unlocked state). Explanatory drawing from one side of an engagement rotary body. Explanatory drawing from the other side of the engaging rotor The conceptual diagram which shows the point of patent document 1. FIG. The schematic explanatory drawing of the structural member of the locking device X incorporated in the lock case. The schematic explanatory drawing of the main member when the 1st operation means (for example, key combination) of the locking device X is inserted in a cylinder lock, and unlocking operation is carried out. The schematic explanatory drawing of the main member when the 2nd operation means (opening-closing lever) is inserted in the cam member of the locking device X, and unlocking operation is carried out. Explanatory drawing which shows the position of the hook etc. in the case of the complete unlocking state of the locking device X.

Explanation of symbols

X ... Locking device, Y ... Auxiliary lock, 2 ... Shutter curtain, 9 ... Hook, 10 ... Case, 10a ... One side of case 10, 14 ... Second operating means (open / close lever), 18 ... Cylinder lock, K ... No. 1 operation means (key combination), 52... Base plate, 53 .. lid plate, 54... Hole for fixing tool, 55... First fitting hole, 56. ... 2nd guide long hole, 59 ... Shaft hole of base plate, 64 ... Through hole, 65 ... 1st support hole, 66 ... 2nd support hole, 71 ... Engagement rotating body, 71a ... One side surface, 72 ... 1st Fitting portion, 72a ... engaging surface, 73 ... regulating pin, 71b ... other side surface, 74 ... second fitting portion, 75 ... notch portion, 76 ... spring end support portion, 77 ... engaging protrusion, 81 ... locking Means 82: fixing column 83: fixing means 85 ... first arm 86 ... engaging claw 87 ... second arm 89 ... for holding the unlocked state Ne (tension spring), 91 ... unlock state eliminating means (cam member), 91a ... tubular fitting portion, 91b ... engaging portion, 92 ... locked position return spring.

Claims (8)

An auxiliary lock for a locking device attached to a lock case incorporating a locking device for unlocking on the condition that the first operation member is unlocked with respect to the cylinder lock and the second operation member is unlocked with respect to the cam member. The lock includes an engaging rotator and a locking means for locking the engaging rotator at a predetermined unlocking position between the base plate and the lid plate, respectively, and an engagement formed on the locking means. An unlocked state holding spring in which a spring force always acts in a direction in which the claw can engage with an engaging protrusion provided on the engaging rotating body and an unlocking state in which the engaging rotating body is held in the unlocked state. Each of which is provided with a releasing means, and the unlocking state is maintained when the engaging projection of the engaging rotating body is displaced from the locked position to the unlocked position by the operating force of the first operating means. The engaging projections of the locking means Locking device auxiliary lock beyond the pawl characterized in that it is engaged with the engaging claw. In Claim 1, the lock case of the locking device is fixed to the back side of the vehicle shutter, and the unlocking operation of the operating means is performed by first unlocking the first operating means with respect to the cylinder lock, An auxiliary lock for a locking device, wherein the unlocking operation of the cam member by the second operation means is performed while the unlocking state of the cylinder lock is held by the locking means. In claim 1, the locking means is provided with an arm extending toward the unlocked state canceling means, and when the unlocked state canceling means rotates in a predetermined direction by the operating force of the second operating means, The locking means is an auxiliary lock for a locking device, wherein the engaging claw rotates in a direction away from the engaging projection of the engaging rotating body. The engagement rotating body is automatically returned to the locking position between the base plate and the cover plate at the moment when the engaging claw of the locking means is separated from the engaging projection of the engaging rotating body. An auxiliary lock for a locking device, wherein a locking position return spring is provided. 3. The unlocking state holding spring according to claim 1, wherein one end of the unlocking state holding spring is attached to the arm side of the locking means, and the other end is attached to the base plate or the lid plate. Auxiliary lock for locking device. 2. The base plate and the cover plate according to claim 1, wherein shaft holes are respectively formed, and a central portion of the lever-like locking means is pivotally supported by a fixed column inserted into the shaft hole. Auxiliary lock for locking device. 2. The auxiliary lock for a locking device according to claim 1, wherein the fixing column has a female screw, and fixing means for fixing the lid plate to the base plate is screwed to the female screw. 2. The auxiliary lock for a locking device according to claim 1, wherein the base plate is attached to one side surface of the lock case seen from the cargo compartment side of the vehicle.

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