JP4693631B2 - Latching device for door opening / closing handle - Google Patents

Description

  The present invention mainly relates to a latching device that locks a door opening / closing handle provided in a cargo box of a truck at a lock position.

  Generally, in a cargo box, a pair of bearings are attached to the outer surface of a door that opens and closes an opening provided at the rear or side, and the door is opened and closed on a lock shaft whose both ends are rotatably supported by the bearing. One end of the handle is pivotally connected, the lock shaft is rotated by operating the door opening / closing handle, and the lock cams provided at the upper and lower ends of the lock shaft are engaged with the cam keeper provided at the upper and lower sides of the cargo box. In combination, the door is kept closed.

  Also, a latching device is provided on the outer surface of the door, and the door opening / closing handle is locked at the lock position by the latching device. As such a latching device, the lower end of the movable main body is pivotably attached to a fixed main body attached to the door to form a case portion, and a hook lever is fitted into a split groove formed on the upper portion of the movable main body. The hook lever is urged toward the standing direction by a spring mechanism, and the hook portion provided at the tip of the hook lever is rotated to the lock position and is engaged with the upper side of the door opening / closing handle. It is known that the door opening / closing handle is locked in a locked position (for example, Patent Document 1 and Patent Document 2).

  When the operating rod inserted into the door is pushed in, the movable body is laid down after the hook lever locking mechanism provided in the case is moved to the release side, and the hook lever is released from the door opening / closing handle. .

  The fixed main body is integrally provided with a fixed seat portion screwed to the door at a position behind the door opening / closing handle rotated to the lock position. Further, a screwing portion is also provided on the lower front side of the fixed main body, and the screwing portion is also fastened to the door. Here, when the hook lever is locked in the upright position, it is difficult to remove the mounting screw that stops behind the door opening / closing handle unless the hook lever is broken.

JP-A-9-287334 (FIGS. 1 and 2) Japanese Patent Laying-Open No. 2005-282011 (FIG. 4)

  However, in the latching device of the above-mentioned Patent Document 1, the mounting screws that stop at the lower front surface of the fixed body are always exposed, and these mounting screws can be easily removed. In this state, the lower end of the fixed main body of the case portion is lifted from the door without being tightened, so that a bar or the like can be thrust into the lift gap. Therefore, in the above-mentioned Patent Document 1, there is a possibility that the fixed main body is forcibly removed from the door, or the mounting position of the fixed main body is shifted and the hook lever is invalidated.

  Therefore, out of the fixed body's screw-fastened part, the one that can not be shielded by the door opening / closing handle is provided on the bottom plate part of the fixed body, its front is opened, and the cap is fitted into the opening There is also a latching device that prevents the mounting screw from being conspicuous in appearance. However, since the cap is merely fitted to the fixed main body, it is easy to remove and not sufficient as a security measure.

  Moreover, in the latching device of the above-mentioned patent document 2, it has the structure which concealed the screwing part of the lower side of a fixed main body with a movable main body. Such a configuration cannot be adopted when the case portion is formed of a single member. For example, when it is used for the door of a cargo box of a refrigerated truck, the release mechanism by the operating rod is omitted because the cool air is not leaked from the operating rod insertion hole of the door, and the case portion is configured from one member. There is a case.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a latching device in which the mounting screw of the case portion supporting the hook lever cannot be easily removed in a state where the hook lever of the latching device for the door opening / closing handle is in the standing position. It is to improve crime prevention.

  In order to solve the above-mentioned problem, the first solving means of the present invention includes a standing position for preventing the upward movement of the door opening / closing handle rotated to the door lock position on the case portion attached to the door. A hook lever is supported so as to be able to rotate between the fall position retracted from the upper side of the door opening / closing handle to the near side, a lock is attached to the case portion, and the rotor rotation of the lock is placed in the case portion. A lock mechanism that restricts movement of the hook lever from the inverted position according to the movement and release of the restriction is provided, and is fixed to be screwed to the door at the rear of the door opening / closing handle integrally with the case portion. In the latching device for the door opening / closing handle provided with a seat part, a retraction clearance is formed on the front surface of the case part so that the lower side of the lever with the pivot axis of the hook lever as a boundary moves backward when turning to the fall position. Shi A screw fixing portion for the door is provided at a position below the pivot axis of the hook lever in the case portion, and the lever lower side portion is retracted to the retreating gap by moving the lever lower side portion backward. A cap that is slidable between a space generated in front of the mounting screw and a front of the mounting screw that stops at the screwing portion, and the cap engages with the case portion in front of the mounting screw, thereby the retraction gap. When the hook lever is turned to the upright position in this positioning state, the hook lever is prevented from moving the cap toward the retraction gap side. It is characterized by.

  That is, in the first solution, the cap is slid from the space generated in front of the lower side portion of the lever to the front of the mounting screw in the state where the hook lever is in the lying position by adopting the characteristic configuration. Thus, the case is engaged with the case portion, and the cap can be positioned by the engagement except for the movement toward the retreating gap. Then, when the hook lever is rotated to the upright position in this positioning state, the hook lever prevents the cap from moving toward the retracting gap, so that the cap can be moved from the front of the mounting screw. become unable. Therefore, it is difficult to expose the mounting screw unless the cap, the case portion, the hook lever, etc. are destroyed. Further, in the state where the hook lever is in the lying position, the cap can be slid into a space generated in front of the lower side portion of the lever, so that the attachment screw can be exposed and attached / detached.

  In order to solve the above-described problem, the second means of the present invention includes a standing position that prevents upward rotation of the door opening / closing handle rotated to the door lock position and a case portion attached to the door, and A hook lever is supported so that it can be turned between the fall position retracted from the upper side of the door opening / closing handle to the front side, a lock is attached to the case part, and the rotor of the lock is turned inside the case part. A locking mechanism that restricts movement of the hook lever from the inverted position and releases the restriction, and is fixed to the door integrally with the case and screwed to the door at the rear of the door opening / closing handle. In the latching device for the door opening / closing handle provided with a part, a screwing part to the door is provided behind the opening formed in the case part, and the rotor is attached to the screwing part to be locked in the locked state. Located in front of, in unlocked state in which characterized in that a co-rotation member to retreat from the front of the mounting screws.

  That is, in this second solution, when the lock is locked, the mounting screw that stops behind the opening formed in the case portion is shielded by the co-rotating member, so that the lock is broken, It is difficult to expose the mounting screw unless the co-rotating member and the case portion are destroyed. In addition, in the state where the lock is unlocked, the co-rotating member is retracted, so that the mounting screw can be attached and detached.

  In the configuration according to the first solution means and the second solution means, the case portion is composed of one member, or the fixed main body and the movable main body as in Patent Documents 1 and 2 described above. It is possible to employ a configuration consisting of

Moreover, the said opening does not need to be always open | released, The meaning which includes the structure which can be opened and closed with a detachable cap etc. is also included.
For example, since the second solution means employs a configuration in which a screwing portion for the door is provided behind the opening formed in the case portion, the opening is used as the cap of the first solution means. It can be closed with.

  Specifically, in the second solution means, a retraction gap is formed on the front surface of the case portion so that the lower side portion of the lever with the rotation axis of the hook lever as a boundary moves backward when turning to the fall position. The lever lower side portion is retracted into the retraction gap, and has a cap that can be slid between the open space and the space generated in front of the lever lower side portion. In addition, when the hook lever is rotated to the upright position in this positioning state, the hook lever is moved to the upright position by engaging with the case portion in the forward direction. A configuration in which the cap is prevented from moving toward the retracting gap can be employed. According to this configuration, the mounting screw is shielded doubly, so that it is difficult to remove the mounting screw when the hook lever is in the upright position.

  For the engagement between the cap and the case portion, a configuration that is separable from the case portion or a configuration that is not separable from the case portion and that has a predetermined slide stroke with respect to the case portion is appropriately employed. Can do.

  Here, in the case where the cap is configured to be separable, if the first solution means and the second solution means are used in combination, the co-rotating member can be used even if the cap is locked without being attached. Therefore, the mounting screw can be shielded without fail.

  Moreover, the said screwing part can be set as the structure fastened directly with the said door, and can also be set as the structure fastened via another members, such as an attachment base, between the said doors.

  In the second solution, the lock mechanism includes the lock and the co-rotating member. When the lock is locked with the hook lever in the upright position, the co-rotating member is moved to the hook. Positioned behind the lever lower side with the lever's pivot axis as a boundary to restrict retraction, and when the lock is unlocked, the co-rotating member retracts from the rear of the lever lower side If it employs, the locking mechanism is configured using the co-rotating member, so that the number of parts can be prevented from increasing.

  Moreover, the number of the said screwing part is not limited to one place, A several place may be sufficient. When there are a plurality of screw fastening portions, it is not necessary to shield all the mounting screws with the cap or the co-rotating member, and if the at least one mounting screw is shielded, the case portion will not easily float from the door. Thus, the crime prevention performance can be improved as compared with the conventional example.

  As described above, the latch device for the door opening / closing handle according to the present invention employs the configuration of the first solution means or the second solution means, so that the hook lever is locked in the upright position. As a result, it becomes difficult to expose the mounting screw in a state, and therefore, the mounting screw that fixes the case portion to the door cannot be easily removed, and the crime prevention performance can be improved.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, the door A for opening and closing the opening of the cargo box of the lorry is supported by one side by a hinge (not shown) so that it can be opened and closed. A lock shaft 1 extending in the vertical direction is provided outside. In addition, illustration of the door A is abbreviate | omitted in FIG.

  The upper and lower ends of the lock shaft 1 are rotatably supported by bearings (not shown) attached to the outer surface of the door A. When the lock shaft 1 is rotated about the axis, the upper and lower ends are provided. A lock cam (not shown) is engaged with cam keepers provided at the top and bottom of the cargo box, so that the door A is held in a closed state.

  A shaft support part 3 that supports a pivot shaft 2 in the front-rear direction is provided at the center in the length direction of the lock shaft 1, and one end portion of the door opening / closing handle 4 is supported by the pivot shaft 2 supported by the shaft support part 3. Is rotatably supported. When the door opening / closing handle 4 is rotated about the lock shaft 1, the lock shaft 1 rotates and the door opening / closing handle 4 is rotated to a position (lock position) substantially parallel to the outer surface of the door A. Then, the lock cams (not shown) at the upper and lower ends of the lock shaft 1 engage with the cam keeper (not shown), and the door A is locked in the closed state.

  On the outer surface of the door A, a latching device 10 for locking the door opening / closing handle 4 displaced to the lock position is provided.

  The latch device 10 includes a fixed seat portion 11 that is screwed to the door at a position behind the door opening / closing handle 4 that has been rotated to the door lock position. The fixed seat portion 11 is fixed to the door A by tightening by which the mounting bolt inserted into each bolt insertion hole 12 is screw-engaged with the door A.

  The fixed seat portion 11 is provided integrally with a case portion 13 positioned below the door opening / closing handle 4 that has been rotated to the door lock position.

  Both side portions of the case portion 13 form a pair of side walls 13a, and an extraction window 13b is formed between the upper portions of the pair of side walls 13a.

  On the front surface of the case portion 13, a notch gap 13 c in the vertical direction is formed so as to communicate with the extraction window 13 b. As shown in FIGS. 2B and 3, a shaft support portion 15 that supports the horizontal rotating shaft 14 is provided on the inner side of the front wall forming the notch gap 13 c.

  The rotating shaft 14 has an upright position (see FIG. 2A) for preventing the door opening / closing handle 4 from rotating upward, and a lying position retracted from the upper side of the door opening / closing handle 4 to the front side. A hook lever 16 is supported so as to be able to fall and rotate in a notch gap 13c (see FIG. 2B).

  Specifically, the rotation shaft 14 is passed through substantially the center of the hook lever 16 in the length direction. The hook lever 16 pivots up and down around the pivot shaft 14, and the hook portion 16 a formed at the upper portion in the upright state is positioned above the case portion 13.

  The notch gap 13c is opened rearward to the door A, and serves as a retreat gap in which the lever lower side portion 16b moves backward with the pivot shaft 14 of the hook lever 16 as a boundary.

  An opening 13d is formed below the notch gap 13c so that the hook lever 16 is not positioned, that is, is removed from the retraction gap.

  On the inner side of the front wall forming the notch gap 13c, there is provided a screwing portion 18 made of a plate-like member in which a screw insertion hole 17 is formed. The screwing portion 18 is fixed to a seat portion that protrudes inside the front wall of the case portion 13. The screw insertion hole 17 is located behind the opening 13d.

  A mounting screw 19 made of a bolt is inserted into the screw insertion hole 17. The mounting screw 19 is screwed to the door A, and the latch device 10 is fixed to the door A by tightening and fixing the fixing seat portion 11 with screws.

  As shown in FIG. 2A, a protrusion 16 c is provided on the surface side of the hook lever 16 with respect to the fixed seat portion 11. When the hook lever 16 is in the upright position, the upper surface of the protrusion 16c is substantially the same as the lower end of the fixed seat 11, and the door is opened and closed by the protrusion 16c and the upper surface of the side wall 13a of the case portion 13. The handle 4 is supported. In this supported state, the hook 16a faces the upper side of the door opening / closing handle 4 and prevents the door opening / closing handle 4 from rotating upward.

  The screwing portion 18 has an inclined plate portion 18a, and one end of the spring holder 20 is engaged with the upper edge of the inclined plate portion 18a. Further, the other end of the spring holder 20 is engaged with a pin 16 d provided below the protrusion 16 c of the hook lever 16.

  A compression spring 21 is provided outside the spring holder 20. The compression spring 21 is configured such that the hook lever 16 rotates in a prone direction around the rotation shaft 14 from the state where the hook lever 16 is in the standing position, and the pin 16d is connected to the upper edge of the inclined plate portion 18a and the rotation shaft 14. The rotating hook lever 16 is urged to rotate to the upright position until it is located on a straight line connecting the two, and when the pin 16d exceeds the straight line, the urging direction is switched, and the hook lever 16 is urged so as to rotate toward the lying position.

  In the above configuration, when the door A is in a locked state and the door opening / closing handle 4 is moved to the upper position of the hook lever 16 and then rotated downward, the door opening / closing handle 4 is tapered to the upper end of the hook lever 16. When the door opening / closing handle 4 is further turned downward from the contact state, the hook lever 16 is depressed against the elasticity of the compression spring 21 because the door opening / closing handle 4 is pressed downward. It rotates in the direction to do. When the door opening / closing handle 4 passes through the hook 16a, the urging direction of the compression spring 21 is on the upright position side. For this reason, the hook lever 16 automatically returns to the standing position, and the hook 16 a is positioned above the door opening / closing handle 4.

  As shown in FIG. 1, a lock 30 with a keyhole exposed on the front surface is attached to the case portion 13, and the hook is provided in the case portion 13 according to the rotation of the rotor 31 of the lock 30. A lock mechanism for restricting movement of the lever 16 from the inverted position and releasing the restriction is provided.

  The lock mechanism includes a lock 30 and a plate-like co-rotating member 32 provided at the rear end of the rotor 31.

  As shown in FIGS. 3 and 4, when the lock 30 is locked with the hook lever 16 in the upright position, the upright portion 32a of the co-rotating member 32 is located behind the lever lower side portion 16b. When the lock 30 is unlocked and the lock 30 is unlocked, the upright portion 32a of the co-rotating member 32 is retracted from the rear side of the lever lower side portion 16b, and the lever lower side portion 16b can freely move backward.

  Furthermore, the co-rotating member 32 is provided in front of the mounting screw 19 that stops at the screwing portion 18 in the locked state and is retracted from the front of the mounting screw 19 in the unlocked state. For this reason, in the locked state, the mounting screw 19 is always shielded from the opening 13d by the co-rotating member 32, and in the unlocked state, the mounting screw 19 faces the opening 13d.

  In addition, as shown in FIGS. 1, 2A, and 2B, the latch device 10 has the lever lower side portion 16b moved into the retraction gap 13c as a result of the hook lever 16 being rotated to the lying down position. A cap 22 is provided that slides up and down between a space created in front of the lever lower side portion 16b and the opening 13d by retreating.

  Both side portions and the lower end portion of the cap 22 have groove portions 22a formed in the length direction of each portion. On the edge of the opening 13d, a guide protrusion 13e is integrally provided with which the groove cap 22a 22a is slidably engaged.

  When the cap 22 is slid to the opening 13d and the groove 22a and the guide protrusion 13e are completely fitted, the cap 22 is positioned in front of the mounting screw 19 and in front of the co-rotating member 32, It will be in the state engaged with the case part 13 in the left-right both-side direction, the downward direction, and the front-back direction. That is, the cap 22 is positioned with respect to the case portion 13 except for the movement toward the retracting gap.

  When the hook lever 16 is rotated to the upright position with the cap 22 positioned, the lower end of the lever lower side portion 16b has a gap so that it does not come into contact with the upper end side of the cap 22 during the fall / standup rotation. It will be in the opposite state. Therefore, the hook lever 16 prevents the cap 22 from moving toward the retracting gap. In this blocking state, the opening 13d is closed by the cap 22.

  The latch device 10 shown in the embodiment has the above-described structure, and when the lock 30 is locked in a state where the hook lever 16 is rotated to the upright position, as shown in FIG. The portion 32a is located behind the lever lower side portion 16b, restricts the backward movement of the lever lower side portion 16b, and is located in front of the mounting screw 19. For this reason, the hook lever 16 cannot be rotated to the undulation position.

  Therefore, in the locked state, the cap 22 cannot be moved unless a destructive action is performed on the latching device 10, and even if the cap 22 is broken or moved, the co-rotating member 32 remains in the case. The mounting screw 19 is shielded in the portion 13, and the mounting screw 19 is not exposed unless further destructive action is performed on the co-rotating member 32, the lock 30 and the like.

  When the lock 30 is unlocked, as shown in FIG. 3, the co-rotating member 32 can be retracted from the front of the mounting screw 19 and the lever lower side portion 16b can be pushed in. By this pushing, the hook lever 16 can be turned to the lying position about the turning shaft 14.

  Further, as shown in FIG. 2B, in a state where the hook lever 16 is in the lying position, the cap 22 is placed in a space generated in front of the lever lower side portion 16b from the opening 13d (front of the mounting screw 19). It can be retracted and removed from the case portion 13. Here, when the hook lever 16 is in the lying position, the lock 30 is in the unlocked state, and the co-rotating member 32 is retracted from the front of the mounting screw 19, so that when the cap 22 is removed, the mounting screw 19 is exposed from the opening 13d. For this reason, the attachment screw 19 can be attached and detached.

  In this latching device 10, the screwing portion 18 is provided at one place. However, the present invention is not limited to this. For example, two opening openings are formed so as to be continuous on both the left and right sides of the notch gap 13c. If the cap is configured to be slidably engaged with the opening in the left-right direction, a screwing portion can be provided behind each opening.

  Moreover, in this latching apparatus 10, although the screwing part 18 was located above the lock | rock, ie, the rotor 31, it is not limited to this. For example, the screwing portion 18 can be positioned laterally or below the rotor, or the mounting screw 19 can be positioned forward of the rear end of the rotor 31 by bending the co-rotating member 32. In short, as the rotor 31 rotates, the co-rotating member 32 may be provided so as to be positioned in front of the mounting screw 19 in the locked state and retract from the front of the mounting screw 19 in the unlocked state. As long as the positional relationship between the rotor 31 and the mounting screw 19 and the shape of the co-rotating member 32 can be appropriately changed.

  Further, in this latching device 10, the mounting screw 19 is shielded and the hook lever 16 is retracted by one co-rotating member 32, but by providing two co-rotating members on the rotor, each is independent. Can be done.

Front view of a latching device for a door opening / closing handle according to an embodiment (A) A longitudinal sectional view showing a state in which the latching device in FIG. 1 is unlocked and the hook lever is in a standing position, (b) a state in which the latching device in FIG. 1 is unlocked and the hook lever is in a lying position Vertical section showing Enlarged view of the back of the latching device of FIG. 1 is a longitudinal sectional view showing a state in which the latching device of FIG. 1 is locked and the hook lever is in an upright position.

Explanation of symbols

4 Door opening / closing handle 10 Latching device 11 Fixed seat portion 13 Case portion 13c Notch clearance (retraction clearance)
13d Opening port 14 Rotating shaft 16 Hook lever 16b Lever lower part 18 Screwing part 19 Mounting screw 22 Cap 30 Lock 31 Rotor 32 Co-rotating member

Claims (4)

On the case 13 attached to the door A, an upright position that prevents the door opening / closing handle 4 rotated to the door lock position from rotating upward, and a fallback that has retreated from the upper side of the door opening / closing handle 4 to the near side. The hook lever 16 is supported so as to be able to rotate between the positions, the lock 30 is attached to the case portion 13, and the hook lever 16 is fitted in the case portion 13 according to the rotation of the rotor of the lock 30. A lock mechanism for restricting movement from the inverted position and releasing the restriction is provided, and a fixed seat portion 11 that is screwed to the door at the rear of the door opening / closing handle 4 is provided integrally with the case portion 13. In the door latch handle latching device,
On the front surface of the case portion 13, a retraction gap 13 c is formed in which the lever lower side portion 16 b with the pivot shaft 14 of the hook lever 16 as a boundary is retracted when rotating to the lying down position. A screwing portion 18 to the door A side is provided at a position below the pivot shaft 14 of the hook lever 16, and the lever lower side portion 16b is retracted into the retraction gap 13c so that the lever lower side is provided. A cap 22 slidable between a space generated in front of the portion 16 b and the front of the mounting screw 19 that stops at the screwing portion 18. The cap 22 is connected to the case portion 13 in front of the mounting screw 19. Engagement results in a positioning state except for the movement toward the retraction gap 13c. When the hook lever 16 is rotated to the standing position in this positioning state, the hook lever is moved. Over 16 latch assembly of door opening and closing handle, characterized in that a state which prevents the movement to the retracted gap 13c side of the cap 22. On the case 13 attached to the door A, an upright position that prevents the door opening / closing handle 4 rotated to the door lock position from rotating upward, and a fallback that has retreated from the upper side of the door opening / closing handle 4 to the near side. The hook lever 16 is supported so as to be able to rotate between the positions, the lock 30 is attached to the case portion 13, and the hook lever 16 is fitted in the case portion 13 according to the rotation of the rotor of the lock 30. A lock mechanism for restricting movement from the inverted position and releasing the restriction is provided, and a fixed seat portion 11 that is screwed to the door at the rear of the door opening / closing handle 4 is provided integrally with the case portion 13. In the door latch handle latching device,
A screwing portion 18 to the door A side is provided behind the opening 13d formed in the case portion 13, and the rotor 31 is positioned in front of the mounting screw 19 that stops on the screwing portion 18 in a locked state. A latching device for a door opening / closing handle, characterized in that a co-rotating member 32 that retracts from the front of the mounting screw 19 in an unlocked state is provided.   On the front surface of the case part 13, a lever lower side part 16b with the pivot shaft 14 of the hook lever 16 as a boundary is formed with a retreating gap 13c that retreats when turning to the lying position, and the lever lower side part 16b The cap 22 can be slid between the space formed in front of the lever lower side portion 16b and the opening 13d by retreating to the retreating gap 13c. The cap 22 is more than the co-rotating member 32. By engaging with the case portion 13 in the front, it is positioned except for the movement toward the retreating gap 13c, and when the hook lever 16 is turned to the standing position in this positioning state, the hook The latching device for the door opening / closing handle according to claim 2, wherein the lever (16) is in a state of preventing the cap (22) from moving toward the retreating gap (13c).   The lock mechanism includes the lock 30 and the co-rotating member 32. When the lock 30 is locked in a state where the hook lever 16 is in the upright position, the co-rotating member 32 rotates the hook lever 16. Positioning behind the lever lower side portion 16b with the shaft 14 as a boundary, the backward movement is restricted, and when the lock 30 is unlocked, the co-rotating member 32 is retracted from the rear side of the lever lower side portion 16b. Item 4. A latching device for a door opening / closing handle according to item 2 or 3.

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